CN102998547A - Method and system for monitoring base station antenna element and integrated monitoring device - Google Patents
Method and system for monitoring base station antenna element and integrated monitoring device Download PDFInfo
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- CN102998547A CN102998547A CN2011104000492A CN201110400049A CN102998547A CN 102998547 A CN102998547 A CN 102998547A CN 2011104000492 A CN2011104000492 A CN 2011104000492A CN 201110400049 A CN201110400049 A CN 201110400049A CN 102998547 A CN102998547 A CN 102998547A
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Abstract
The invention discloses a method and a system for monitoring a base station antenna element and an integrated monitoring device. The method, the system and the integrated monitoring device are used for monitoring whether is base station antenna element is abnormal or not. The method includes: performing detection and analog to digital conversion to an acquired transmission signal of the base station antenna element to obtain a direct current signal and a digital signal of the transmission signal; determining variation amplitude of the digital is a preset time period, determining that the antenna element is abnormal when the variation amplitude is larger than a preset variation amplitude threshold, or else, determining that the antenna element is normal.
Description
The present patent application be that on 09 08th, 2011, application number are 201110265386.5 the applying date, denomination of invention divides an application for the patent application of " a kind of monitoring method of antenna for base station oscillator, system and integrated monitor equipment ".
Technical field
The present invention relates to communication technical field, relate in particular to a kind of monitoring method, system and integrated monitor equipment of antenna for base station oscillator.
Background technology
Antenna for base station generally adopts the mode of oscillator group battle array, has higher gain and satisfies the electromagnetic beam of certain figuration requirement with formation, is used for transmitting wireless communication signal.Current, the antenna for base station of equipping more oscillator becomes main flow gradually, particularly TD SDMA accesses (TD-SCDMA, Time Division Synchronized Code Division Multiple Access) smart antenna and Long Term Evolution (LTE, Long Term Evolution) multiple-input and multiple-output (MIMO) antenna of system, not only in antenna vertical plane group battle array, also need to form mattress array at surface level simultaneously.
In base station array antenna, oscillator is a lot, and when wherein certain antenna oscillator was because of certain reason (for example: short circuit or feed open circuit) cisco unity malfunction, array master port reflection coefficient often can not worsen very seriously, and the standing wave alarm can not sent in the base station.But this moment, array pattern but can be subject to obvious impact, such as lobe pattern is symmetrical not, Sidelobe Suppression is poor, the lower degradation of gain.
Prior art provides the standing-wave ratio (SWR) of monitoring base station antenna-feedback system, and the standing wave observation circuit of output different stage alarm signal, and based on the standing wave monitoring method of this circuit, but the complex circuit designs that this monitoring method is used, and monitoring target is the radiofrequency signal of antenna feeder and radio-frequency head device junction, can't survey for the standing wave situation of antenna for base station inside oscillator.
In sum, prior art is only monitored for the radiofrequency signal between radio-frequency (RF) front-end circuit and antenna feeder port, when this radiofrequency signal standing wave is abnormal, gives the alarm signal of different stage.Yet, for large antenna array, when the abnormal conditions such as rosin joint, short circuit, the broken ring of oscillator physical construction occurring when the inner indivedual oscillators of antenna, the radiofrequency signal standing wave that antenna feeder connects the radio-frequency (RF) front-end circuit place can't occur obviously abnormal, thereby can't the abnormal situation of monitoring aerial battle array inside oscillator.
Summary of the invention
Whether the embodiment of the present invention provides a kind of monitoring method, system and integrated monitor equipment of antenna for base station oscillator, abnormal in order to the monitoring base station antenna oscillator.
The monitoring method of a kind of antenna for base station oscillator that the embodiment of the present invention provides comprises:
The signal transmission of the antenna for base station oscillator that gets is carried out respectively detection and analog to digital conversion, obtain the digital signal of the direct current signal of described signal transmission;
Determine the amplitude of variation of described digital signal in setting-up time length, during greater than the amplitude of variation threshold value that sets in advance, determine that described antenna oscillator is abnormal when this amplitude of variation, otherwise, determine that described antenna oscillator is normal.
The monitoring system of a kind of antenna for base station oscillator that the embodiment of the present invention provides comprises:
Signal acquiring unit is for the signal transmission that obtains the antenna for base station oscillator;
Integrated monitor equipment, the signal transmission that is used for the antenna for base station oscillator that will get carries out respectively detection and analog to digital conversion, obtains the digital signal of the direct current signal of described signal transmission; Determine the amplitude of variation of described digital signal in setting-up time length, when this amplitude of variation, during greater than the amplitude of variation threshold value that sets in advance, determine that described antenna oscillator is abnormal, otherwise, determine that described antenna oscillator is normal.
A kind of integrated monitor equipment that the embodiment of the present invention provides comprises:
Logarithmic detector is used for receiving the signal transmission of antenna for base station oscillator, and carries out detection, and the direct current signal of the signal transmission of outputting base station antenna oscillator is to analog to digital converter;
Analog to digital converter is used for converting the direct current signal of the signal transmission of antenna for base station oscillator to digital signal, and exports to microcontroller;
Microcontroller be used for to be determined the amplitude of variation of described digital signal in setting-up time length, during greater than the amplitude of variation threshold value that sets in advance, determines that described antenna oscillator is abnormal when this amplitude of variation, otherwise, determine that described antenna oscillator is normal.
The another kind of integrated monitor equipment that the embodiment of the present invention provides comprises at least one control module, and wherein, each control module specifically comprises:
Change-over switch is used for selecting the signal transmission of antenna for base station oscillator to export to wave detector;
Wave detector is used for the signal transmission of the antenna for base station oscillator of reception change-over switch output, and carries out detection, and the direct current signal of the signal transmission of outputting base station antenna oscillator is to controller;
Controller, be used for converting the direct current signal of the signal transmission of antenna for base station oscillator to digital signal, and the amplitude of variation of the interior described digital signal of definite setting-up time length, when this amplitude of variation during greater than the amplitude of variation threshold value that sets in advance, determine that described antenna oscillator is abnormal, otherwise, determine that described antenna oscillator is normal.
The embodiment of the present invention is carried out respectively detection and analog to digital conversion with the signal transmission of the antenna for base station oscillator that gets, obtains the digital signal of the direct current signal of this signal transmission; Determine the amplitude of variation of digital signal in setting-up time length, when this amplitude of variation, during greater than the amplitude of variation threshold value that sets in advance, determine that antenna oscillator is abnormal, otherwise, determine that antenna oscillator is normal, thereby realized whether abnormal monitoring of each oscillator in antenna for base station.
Description of drawings
The schematic flow sheet of the monitoring method of a kind of antenna for base station oscillator that Fig. 1 provides for the embodiment of the present invention;
The schematic diagram of RF coupler and detection port is set on 2 * 4 planar array antennas for the base station that Fig. 2 provides for the embodiment of the present invention;
The schematic diagram of RF coupler and detection port is set on 2 * 4 planar array antennas for the base station that Fig. 3 provides for the embodiment of the present invention;
The schematic diagram of magnet ring inductor and detection port is set on 2 * 4 planar array antennas for the base station that Fig. 4 provides for the embodiment of the present invention;
The structural representation of the monitoring system of a kind of antenna for base station oscillator that Fig. 5 provides for the embodiment of the present invention;
The structural representation of a kind of integrated monitor equipment that Fig. 6 provides for the embodiment of the present invention;
The control module that Fig. 7 provides for the embodiment of the present invention is placed in the structural representation on antenna for base station;
The structural representation of the control module that Fig. 8 provides for the embodiment of the present invention;
The monitoring system that Fig. 9 provides for the embodiment of the present invention is connected to the schematic diagram on PC;
The circuit diagram of the control module that Figure 10 provides for the embodiment of the present invention;
The circuit diagram of the MAX2015 that Figure 11 provides for the embodiment of the present invention;
The structural drawing of the controller that Figure 12 provides for the embodiment of the present invention;
The structural representation of a kind of integrated monitor equipment that Figure 13 provides for the embodiment of the present invention.
Embodiment
Whether the embodiment of the present invention provides a kind of monitoring method, system and integrated monitor equipment of antenna for base station oscillator, abnormal in order to the monitoring base station antenna oscillator.Below in conjunction with accompanying drawing, the technical scheme that the embodiment of the present invention provides is described.
Referring to Fig. 1, the monitoring method of a kind of antenna for base station oscillator that the embodiment of the present invention provides comprises the following steps:
S101, the signal transmission of the antenna for base station oscillator that gets is carried out respectively detection and analog to digital conversion, obtain the digital signal of direct current signal of the signal transmission of antenna for base station oscillator;
S102, determine the amplitude of variation of digital signal in setting-up time length, during greater than the amplitude of variation threshold value that sets in advance, determine that antenna oscillator is abnormal when this amplitude of variation, otherwise, determine that antenna oscillator is normal.
Particularly, the said method that the embodiment of the present invention provides can be by installing corresponding equipment additional in antenna for base station oscillator outside, perhaps realizes by installing corresponding equipment additional in antenna for base station inside, at this and be not specifically limited.
Preferably, the concrete grammar that obtains the signal transmission of antenna for base station oscillator in above-mentioned steps S101 can comprise following several mode:
1, be coupled out the signal transmission of each final stage merit parallel circuit of base station by RF coupler, wherein, each final stage merit parallel circuit connects the oscillator of two or more equipolarizations.
That is to say, corresponding two RF couplers of each final stage merit parallel circuit of antenna for base station, wherein, RF coupler is used for being coupled out the signal transmission of the antenna of a polarization, another RF coupler is for the signal transmission of the antenna that is coupled out another polarization, and namely RF coupler is corresponding one by one with the antenna oscillator of each polarization of antenna for base station.
2, be coupled out the signal transmission of antenna for base station time final stage merit parallel circuit (being the upper level merit parallel circuit of final stage merit parallel circuit) by RF coupler, corresponding two RF couplers of final stage merit parallel circuit each time, wherein, RF coupler is used for being coupled out the signal transmission of the antenna of coupled equipolarization, and another RF coupler is used for being coupled out the signal transmission of the antenna of another coupled polarization.At this moment, each RF coupler is corresponding with plural antenna oscillator.
By that analogy, be coupled out the signal transmission of the merit parallel circuit of arbitrary level more than antenna for base station time final stage merit parallel circuit (initial one-level merit parallel circuit is first order merit parallel circuit) by RF coupler, corresponding two RF couplers of each this grade merit parallel circuit, wherein, RF coupler is used for being coupled out the signal transmission of the antenna of coupled equipolarization, and another RF coupler is used for being coupled out the signal transmission of the antenna of another coupled polarization.
Wherein, the merit parallel circuit energy of RF coupler coupling can arrange according to concrete application request, usually gets the some values between 15～25dB.
Above-mentioned dual mode is all realized by in corresponding position, antenna for base station inside, RF coupler being set.
3, induce the signal transmission of antenna for base station oscillator by the magnet ring inductor.
Can install in the antenna for base station outside magnet ring inductor additional, the magnet ring inductor is arranged on the top of each antenna for base station radiation array element, induce the signal transmission of each radiation array element by the electromagnetic induction effect of magnet ring inductor, thereby reach the effect of the signal transmission that extracts each oscillator, and this magnet ring inductor is placed on antenna for base station, need not to change the inner structure of antenna for base station, and this external magnet ring inductor can be dismantled, and is convenient to like this reuse on the antenna for base station with money and monitors.
Preferably, whether abnormal according to the amplitude of variation threshold value monitoring base station antenna oscillator that sets in advance in above-mentioned steps S102, specifically comprise:
During greater than the amplitude of variation threshold value that sets in advance, determine that antenna oscillator corresponding to digital signal is abnormal when the amplitude of variation of digital signal in setting-up time length, otherwise, determine that antenna oscillator corresponding to digital signal is normal.
Wherein, above-mentioned setting-up time length can arrange according to concrete application request, for example: 1 second or 1 minute or 1 hour etc., do not do restriction at this.
And the amplitude of variation threshold value that sets in advance also can arrange according to concrete application request, generally gets 1.5～2dB.
Preferably, in the said method that the embodiment of the present invention provides, after determining that antenna oscillator corresponding to digital signal is abnormal, also comprise following flow process:
Generate the alarm signal corresponding with this antenna oscillator, and this alarm signal is sent to the control platform by radio-frequency cable, perhaps adopt antenna data interface (AISG, Antenna Interface Standards Group) agreement embeds this alarm signal in the radiofrequency signal of antenna for base station oscillator emission, send to the control platform by the radio-frequency cable that connects antenna port and base station, perhaps this alarm signal is sent to the control platform by wireless mode.
Whether abnormal above-mentioned control platform is used for the Real-Time Monitoring antenna oscillator.
The embodiment of the present invention, can be by being arranged on the RF coupler on the inner feeding network merit of aerial array parallel circuit, be coupled out the signal transmission of merit parallel circuit, this signal transmission can be radiofrequency signal or RF-reflective signal, extracts the DC digital signal by detection and D/A converting circuit.Certain oscillator damages in aerial array, the feeding network impedance matching was lost efficacy, RF-reflective signal on corresponding merit parallel circuit strengthens, the direct current component of the reflected signal that extracts is corresponding also can be strengthened, variation by monitoring direct current signal intensity, can draw the whether judgement of operation irregularity of oscillator, then the duty of whole aerial array be carried out omnibearing monitoring.
The embodiment of the present invention also can induce the signal transmission of each oscillator by the magnet ring inductor that is arranged on the aerial array outside, this signal transmission can be radiofrequency signal or RF-reflective signal, extracts the DC digital signal by detection and D/A converting circuit.Certain oscillator damages in aerial array, radiofrequency signal on radiation array element weakens, the direct current component of the radiofrequency signal of extracting correspondingly can weaken, variation by monitoring direct current signal intensity, can draw the whether judgement of operation irregularity of oscillator, then the duty of whole aerial array be carried out omnibearing monitoring.
The below provides the explanation of specific embodiment.
Take 2 * 4 dual polarization plane battle arrays as example, the principle of work of the technical scheme that the embodiment of the present invention provides is described.
The first is: by being arranged on the RF coupler on the inner feeding network merit of aerial array parallel circuit, be coupled out the mode of the signal transmission of merit parallel circuit, obtain the signal transmission of antenna for base station oscillator.
For example, shown in Figure 2 is 2 * 4 common planar array antennas, and this antenna array divides 2 row, often show 4 oscillators, each oscillator has 2 cross feed ports, supports the dual polarization mode of operation, antenna has 4 prevention at radio-frequency port like this, is respectively port one, port 2, port 3 and port 4.Port A to H is the detection port that is used for the monitoring base station antenna oscillator in the embodiment of the present invention.
Take port one as example, the signal transmission of port one input, through the 1st grade of merit parallel circuit (1), enter respectively the 2nd grade of merit parallel circuit, be final stage merit parallel circuit (1) and final stage merit parallel circuit (2), placed respectively RF coupler 1 and RF coupler 2 at final stage merit parallel circuit (1) and final stage merit parallel circuit (2) side.The radiofrequency signal that RF coupler 1 and RF coupler 2 are coupled out arrives port B and port A by circuit transmission.Port B and port A are connected to the integrated monitor equipment of rear end by radio-frequency cable.
For other ports, with port one in like manner, can referring to Fig. 2, do not given unnecessary details at this.
Again for example, shown in Figure 3 is also 2 * 4 common planar array antennas, and different from above-described embodiment is, has increased detection port, and A1 to H2 is the detection port for the monitoring base station antenna oscillator.Correspondingly, RF coupler has also increased, and in Fig. 2, is take final stage merit parallel circuit as unit, RF coupler to be set, and in Fig. 3, is take oscillator as unit, RF coupler to be set.
The mode of RF coupler and detection port is set by Fig. 3, can detect each radiation shake the unit each the polarization oscillator working condition.For example, referring to Fig. 3, coupling mechanism 1 be used for being coupled out radiation shake first a+signals of 45 ° of polarization oscillators, and pass to port A1, so the testing result corresponding to signal of port A1 output, shown first a that shakes+working condition of 45 ° of polarization oscillators.
And the mode of RF coupler and detection port is set by Fig. 2, can detect same polarization corresponding to each final stage merit parallel circuit two oscillators working condition.For example, referring to Fig. 2, coupling mechanism 1 be used for being coupled out shake first a and b+signals of 45 ° of polarization oscillators, and pass to port B, so the testing result corresponding to signal of port B output, shown shake first a and b+working condition of 45 ° of polarization oscillators.
The second is: induce the mode of the signal transmission of each oscillator by the magnet ring inductor that is arranged on the aerial array outside, obtain the signal transmission of antenna for base station oscillator.
Fig. 4 is 2 * 4 common planar array antennas, and this antenna array divides 2 row, often shows 4 oscillators (being respectively a, b, c, d), and each oscillator has 2 cross feed ports, supports the dual polarization mode of operation.Antenna array has 4 prevention at radio-frequency port like this, is respectively antenna port 1, port 2, port 3 and port 4.Port A to H ' is the detection port that is used for the monitoring base station antenna oscillator in the embodiment of the present invention.
External magnet ring inductor a is placed on above each array element of antenna for base station to magnet ring inductor h, each magnet ring inductor extraction radiofrequency signal by the array element top, and with this radiofrequency signal by circuit transmission to the port of correspondence, port is connected to the integrated monitor equipment of rear end by radio-frequency cable.
Based on same inventive concept, the embodiment of the present invention also provides a kind of monitoring system and integrated monitor equipment of antenna for base station oscillator, because the principle that this system and equipment are dealt with problems is similar to the monitoring method of aforementioned a kind of antenna for base station oscillator, therefore the enforcement of this system and equipment can referring to the enforcement of method, repeat part and repeat no more.
Referring to Fig. 5, the monitoring system of a kind of antenna for base station oscillator that the embodiment of the present invention provides comprises:
Signal acquiring unit 101 is for the signal transmission that obtains the antenna for base station oscillator.For example, the port A in Fig. 2 is exported to integrated monitor equipment 102 to the signal transmission unification of port H.
Integrated monitor equipment 102, the signal transmission that is used for the antenna for base station oscillator that will get carries out respectively detection and analog to digital conversion, obtains the digital signal of the direct current signal of signal transmission; Determine the amplitude of variation of digital signal in setting-up time length, and according to the amplitude of variation threshold value that sets in advance, whether the monitoring base station antenna oscillator is normal, concrete, when this amplitude of variation during greater than the amplitude of variation threshold value that sets in advance, determine that antenna oscillator is abnormal, otherwise, determine that antenna oscillator is normal.
After can radio-frequency power sensor circuit, radio-frequency switch circuit, microcontroller circuit, power interface and communication interface etc. are integrated, obtain above-mentioned integrated monitor equipment 102.
Preferably, signal acquiring unit 101 can comprise the RF coupler corresponding with each merit parallel circuit of certain one-level of antenna for base station, wherein, places respectively corresponding RF coupler near each branch road of this merit parallel circuit.Wherein, above-mentioned RF coupler is arranged at antenna for base station inside.
For example: signal acquiring unit 101 comprises the RF coupler for each the final stage merit parallel circuit of base station that is coupled; Perhaps, described signal acquiring unit 101 comprises for the base station RF coupler of final stage merit parallel circuit each time that is coupled.
Preferably, signal acquiring unit 101 also can comprise the magnet ring inductor for the signal transmission of each antenna for base station oscillator of induction.Wherein, above-mentioned magnet ring inductor is placed on the outside of antenna for base station.
The integrated monitor equipment 102 that provides in the embodiment of the present invention can be made into independent product in actual applications, also can be integrated in identical product with signal acquiring unit 101, does not do restriction at this.
A kind of structure of the integrated monitor equipment 102 that the embodiment of the present invention provides as shown in Figure 5, comprising:
Logarithmic detector 201 is used for receiving the signal transmission of antenna for base station oscillator, and carries out detection, and the direct current signal of the radiofrequency signal of outputting base station antenna oscillator is to analog to digital converter 202;
Analog to digital converter 202 is used for converting the direct current signal of the radiofrequency signal of antenna for base station oscillator to digital signal, and exports to microcontroller 203;
Microcontroller 203 be used for to be determined the amplitude of variation of described digital signal in setting-up time length, during greater than the amplitude of variation threshold value that sets in advance, determines that antenna oscillator is abnormal when this amplitude of variation, otherwise, determine that antenna oscillator is normal.
Preferably, above-mentioned integrated monitor equipment 102 also comprises serial ports unit 204, wherein:
Microcontroller 203 after be used for determining that also described antenna oscillator is abnormal, generates the alarm signal corresponding with this antenna oscillator, and exports to serial ports unit 204;
Serial ports unit 204 sends to the control platform after being used for converting alarm signal to serial signal.
Serial ports unit 204 can send to the control platform by radio-frequency cable with this alarm signal, perhaps, this alarm signal is sent to the control platform by wireless mode.
Perhaps, between above-mentioned serial ports unit 204 and control platform, also comprise embedded unit 205, wherein;
Serial ports unit 204 sends to embedded unit 205 after also being used for converting alarm signal to serial signal;
Embedded unit 205 is used for adopting antenna data interface (AISG) agreement this serial signal to be embedded the radiofrequency signal of antenna for base station oscillator emission, sends to the control platform by the radio-frequency cable that connects antenna port and base station.
In concrete enforcement, above-mentioned integrated monitor equipment 102 also comprises power supply unit 206, is used for providing power supply to microcontroller 203.
Above-mentioned logarithmic detector 201 can be the logarithmic detector of MAX2015 model; Serial ports unit 204 can be the serial ports unit of RS485 model.
In addition, in above-mentioned integrated monitor equipment 102, above-mentioned analog to digital converter 202 and microcontroller 203 can be integrated on a chip, for example, be realized the function of analog to digital converter 202 and microcontroller 203 by the chip of LPC1751 model.
Fig. 6 shows the another kind of structure of the integrated monitor equipment 102 that the embodiment of the present invention provides, and this integrated monitor equipment comprises: at least one control module, and the row oscillator of each control module in can the control antenna battle array wherein, as shown in Figure 7.
Wherein, the concrete structure of each control module comprises as shown in Figure 8:
Change-over switch is used for selecting the signal transmission of antenna for base station oscillator to export to wave detector;
Wave detector is used for the signal transmission of the antenna for base station oscillator of reception change-over switch output, and carries out detection, and the direct current signal of the signal transmission of outputting base station antenna oscillator is to controller;
Controller, be used for converting the direct current signal of the signal transmission of antenna for base station oscillator to digital signal, and the amplitude of variation of the interior digital signal of definite setting-up time length, when this amplitude of variation during greater than the amplitude of variation threshold value that sets in advance, determine that antenna oscillator is abnormal, otherwise, determine that antenna oscillator is normal.
Preferably, as shown in Figure 6, integrated monitor equipment also comprises: the breakout box that is connected with each control module;
Controller also is used for generating the alarm signal corresponding with this antenna oscillator, and exporting to breakout box after definite antenna oscillator is abnormal;
Breakout box sends to the control platform after being used for converting the alarm signal that receives to serial signal.
Preferably, above-mentioned integrated monitor equipment also comprises embedded unit, wherein:
Breakout box sends to embedded unit after also being used for converting the alarm signal that receives to serial signal;
Embedded unit is used for adopting the AISG agreement this serial signal to be embedded the radiofrequency signal of antenna for base station oscillator emission, sends to the control platform by the radio-frequency cable that connects antenna port and base station.
Wherein, as shown in Figure 9, breakout box is mainly used to realize the switching from RS485 to RS232, and RS485 has less loss, is convenient to realize the long range signals transmission, and the RS232 interface easily is connected with PC, is convenient to realization control.
Wherein, the physical circuit figure of above-mentioned control module as shown in figure 10, preferably, have a plurality of change-over switches in control module, a plurality of change-over switches adopt cascade form to be connected, the RF1 of change-over switch and RF2 pin are respectively used to input the signal transmission of different base station antenna oscillator, and the RFC pin of change-over switch is used for to wave detector or to the signal transmission of next stage change-over switch output through the antenna oscillator of this change-over switch selection.
Wave detector can be the multistage logarithmic amplifier of MAX2015 model, and its inner structure is used for accurately the transmitted signal power of 0.1GHz to 3GHz frequency range is converted to corresponding DC voltage as shown in figure 11.This logarithmic amplifier has outstanding dynamic range and accurate temperature performance, comprises automatic gain control (AGC), the received signal strength indicator (RSSI) in transmitter power measurement and terminal device etc.This DC voltage directly converts numerical information to through the inner A/D of control module (MCU), relatively can learn the working condition of antenna with reference value.
The circuit diagram of controller as shown in figure 12, wherein, the integrated A/D conversion etc. in the inside of controller has reduced a lot of external factors from the circuit design aspect and the error that causes, for example the precision of a plurality of IC, resistance, electric capacity can affect the error of system, thereby has improved system accuracy.
Figure 13 shows the another kind of concrete structure of the integrated monitor equipment 102 that the embodiment of the present invention provides, and this integrated monitor equipment comprises: change-over switch, logarithmic detector MAX2015, microcontroller (LPC1751), RS485 serial ports and power-switching circuit.Wherein, power-switching circuit is used for to logarithmic detector MAX2015, microcontroller (LPC1751) and RS485 Power supply.Change-over switch can select the signal transmission of antenna for base station oscillator to export to logarithmic detector MAX2015, for example, can periodically select the signal with detection port A to D shown in Figure 2, or the signal of detection port E to H shown in Figure 2, logarithmic detector MAX2015 exported to.Certainly, this change-over switch can not arrange yet, and directly the signal with detection port A to H all inputs to logarithmic detector.
This integrated monitor equipment adopts the LPC1751 low-power chip, this chip uses 2 RISC kernels of ARM Cortex-M3V2 version 3, frequency of operation is 100MHz, and the analog to digital converter (ADC) of built-in high-speed memory and high speed 12 bit resolutions is operated in-40 ℃ to 105 ℃ temperature ranges.The supply voltage of power-switching circuit is 2.0V to 3.6V.Chip LPC1751 is inner integrated radio-frequency power sensor circuit, radio-frequency switch circuit, microcontroller circuit, power interface and communication interface.The control software that wherein microcontroller circuit uses, the radiofrequency signal variable quantity of measurement port A to H exactly, and the outputting alarm signal is for communications device monitors.
Wherein, multistage logarithmic amplifier MAX2015 can be set, for example, two-stage logarithmic amplifier MAX2015 can be set, a logarithmic amplifier MAX2015 is used for the signal of port A, port B, port C and port D output is carried out detection; Another logarithmic amplifier MAX2015 is used for the signal of port E, port F, port G and port H output is carried out detection.
Each logarithmic amplifier MAX2015 can be converted to the radiofrequency signal of the merit parallel circuit in 0.1GHz to 3GHz frequency range corresponding direct current signal.This logarithmic amplifier has larger dynamic range and accurate temperature performance.MAX2015 also can be operated under director mode, completes the output power of measurement, comparison and control variable gain amplifier, controls the part of (AGC) ring as a fully integrated automatic gain.This logarithmic amplifier is compared with the controller based on diode detector, has wider measurement range and the precision of Geng Gao, simultaneously, has excellent temperature stability in the whole working range of-40 ℃ to+85 ℃.
In the embodiment of the present invention, when the whole damages of one or two oscillator in two oscillators below the right array antenna of Fig. 2 can't work, the feeding network impedance matching was lost efficacy, to be strengthened by the RF-reflective signal on these two the molecular merit parallel circuits that shake, the direct current component of the RF-reflective signal that extracts is corresponding also can be strengthened, by the variation of monitoring direct current signal intensity, just can draw the whether judgement of operation irregularity of oscillator.
Radiofrequency signal by the output of A port, through after detection, rectification and analog to digital conversion, send to the control platform by wired (according to the telecommunication cable of AISG agreement by antenna port) or wireless mode again, by controlling the display device of platform, duty that can the monitoring aerial oscillator realizes remote monitor.In the embodiment of the present invention, about port B, port C, port D, port E, port F, port G and port H, its measurement and monitoring principle is consistent with above-mentioned principle for port A.Thereby the embodiment of the present invention can be monitored the working condition of antenna oscillator corresponding to each port.
This shows, the integrated monitor equipment that the embodiment of the present invention provides has following characteristics:
Volume is little, both can be integrated in antenna for base station feeding network part, can be placed on antenna for base station again, but at the antenna for base station Real Time Monitoring of net, need not to change the antenna inner structure, and detachable, be convenient to the measurement with the money antenna;
Measuring accuracy is high;
Can carry out on-line measurement to the return loss (being standing-wave ratio (SWR)) of the concrete merit parallel circuit of antenna, and the outputting alarm signal;
Easy to use.
In sum, the monitoring system of the antenna for base station oscillator that the embodiment of the present invention provides, the RF coupler that is arranged by array antenna merit parallel circuit merit parallel circuit place is coupled out the RF-reflective signal, is perhaps induced the radiofrequency signal of oscillator by the magnet ring inductor of array antenna outside; The coupled signal of RF coupler output or the induced signal of magnet ring inductor output are connected to logarithmic detector and digital to analog converter, direct current signal corresponding to output radiofrequency signal; The direct current signal of output is by microprocessor monitors, and it changes Real Time Monitoring, thus the variation of the radiofrequency signal of reflection array antenna oscillator; The significant change of direct current signal is obtained by microprocessor monitors, and is connected to display device, directly provides alarm signal under this state by display device.
The technical scheme that the embodiment of the present invention provides, be not limited only to be applied in the monitoring of 2 * 4 dual polarization plane battle arrays, the monitoring that all comprise the array antenna of two and two above antenna oscillators be can also be applied in, antenna under TD-SCDMA smart antenna, LTE system and other antenna for base station etc. comprised.
The technical scheme that the embodiment of the present invention provides compared with prior art, principle is simple, consist of with low cost, be convenient to the batch production.Simultaneously, therefore the technical scheme that the embodiment of the present invention provides can accurately judge because signal transmission that can direct detection array antenna oscillator is abnormal the antenna operation irregularity that causes because of indivedual oscillators damages.And existing base station standing wave warning technology scheme, judgement is limited, and indivedual oscillators damage, and it is little that antenna master port standing wave changes, thereby can not provide alarm signal, but the parameters such as antenna radiation pattern have notable difference.
Those skilled in the art should understand, embodiments of the invention can be provided as method, system or computer program.Therefore, the present invention can adopt complete hardware implementation example, implement software example or in conjunction with the form of the embodiment of software and hardware aspect fully.And the present invention can adopt the form that wherein includes the upper computer program of implementing of computer-usable storage medium (including but not limited to magnetic disk memory and optical memory etc.) of computer usable program code one or more.
The present invention is that reference is described according to process flow diagram and/or the block scheme of method, equipment (system) and the computer program of the embodiment of the present invention.Should understand can be by the flow process in each flow process in computer program instructions realization flow figure and/or block scheme and/or square frame and process flow diagram and/or block scheme and/or the combination of square frame.Can provide these computer program instructions to the processor of multi-purpose computer, special purpose computer, Embedded Processor or other programmable data processing device to produce a machine, make the instruction of carrying out by the processor of computing machine or other programmable data processing device produce to be used for the system that realizes in the function of flow process of process flow diagram or a plurality of flow process and/or square frame of block scheme or a plurality of square frame appointments.
These computer program instructions also can be stored in energy vectoring computer or the computer-readable memory of other programmable data processing device with setting means work, make the instruction that is stored in this computer-readable memory produce the manufacture that comprises order set, this order set is realized the function of appointment in flow process of process flow diagram or a plurality of flow process and/or square frame of block scheme or a plurality of square frame.
These computer program instructions also can be loaded on computing machine or other programmable data processing device, make on computing machine or other programmable devices and to carry out the sequence of operations step producing computer implemented processing, thereby be provided for realizing the step of the function of appointment in flow process of process flow diagram or a plurality of flow process and/or square frame of block scheme or a plurality of square frame in the instruction of carrying out on computing machine or other programmable devices.
Obviously, those skilled in the art can carry out various changes and modification and not break away from the spirit and scope of the present invention the present invention.Like this, if within of the present invention these are revised and modification belongs to the scope of claim of the present invention and equivalent technologies thereof, the present invention also is intended to comprise these changes and modification interior.
Claims (15)
1. the monitoring method of an antenna for base station oscillator, is characterized in that, comprising:
The signal transmission of the antenna for base station oscillator that gets is carried out respectively detection and analog to digital conversion, obtain the digital signal of the direct current signal of described signal transmission;
Determine the variance values of described digital signal in setting-up time length, during greater than the amplitude of variation threshold value that sets in advance, determine that described antenna oscillator is abnormal when this variance values, otherwise, determine that described antenna oscillator is normal.
2. method according to claim 1, is characterized in that, obtains the concrete grammar of the signal transmission of described antenna for base station oscillator, comprising:
Induce the signal transmission of antenna for base station oscillator by the magnet ring inductor.
3. method according to claim 1 and 2, is characterized in that, after definite described antenna oscillator was abnormal, the method also comprised:
Generate the alarm signal corresponding with described antenna oscillator, and this alarm signal is sent to the control platform.
4. method according to claim 3, is characterized in that, described this alarm signal sent to the control platform, specifically comprises:
This alarm signal is sent to the control platform by radio-frequency cable; Perhaps
Adopt antenna data interface AISG agreement this alarm signal to be embedded in the radiofrequency signal of antenna for base station oscillator emission, send to the control platform by the radio-frequency cable that connects antenna port and base station; Perhaps
This alarm signal is sent to the control platform by wireless mode.
5. the monitoring system of an antenna for base station oscillator, is characterized in that, comprising:
Signal acquiring unit is for the signal transmission that obtains the antenna for base station oscillator;
Integrated monitor equipment, the signal transmission that is used for the antenna for base station oscillator that will get carries out respectively detection and analog to digital conversion, obtains the digital signal of the direct current signal of described signal transmission; Determine the amplitude of variation of described digital signal in setting-up time length, during greater than the amplitude of variation threshold value that sets in advance, determine that described antenna oscillator is abnormal when this amplitude of variation, otherwise, determine that described antenna oscillator is normal.
6. system according to claim 5, is characterized in that, described signal acquiring unit comprises the magnet ring inductor for the signal transmission of each antenna for base station oscillator of induction.
7. according to claim 5 or 6 described systems, is characterized in that, described integrated monitor equipment comprises:
Logarithmic detector is used for receiving the signal transmission of antenna for base station oscillator, and carries out detection, and the direct current signal of the signal transmission of outputting base station antenna oscillator is to analog to digital converter;
Analog to digital converter is used for converting the direct current signal of the signal transmission of antenna for base station oscillator to digital signal, and exports to microcontroller;
Microcontroller be used for to be determined the amplitude of variation of described digital signal in setting-up time length, during greater than the amplitude of variation threshold value that sets in advance, determines that described antenna oscillator is abnormal when this amplitude of variation, otherwise, determine that described antenna oscillator is normal.
8. according to claim 5 or 6 described systems, is characterized in that, described integrated monitor equipment comprises at least one control module, and wherein, each control module specifically comprises:
Change-over switch is used for selecting the signal transmission of antenna for base station oscillator to export to wave detector;
Wave detector is used for the signal transmission of the antenna for base station oscillator of reception change-over switch output, and carries out detection, and the direct current signal of the signal transmission of outputting base station antenna oscillator is to controller;
Controller, be used for converting the direct current signal of the signal transmission of antenna for base station oscillator to digital signal, and the amplitude of variation of the interior described digital signal of definite setting-up time length, when this amplitude of variation during greater than the amplitude of variation threshold value that sets in advance, determine that described antenna oscillator is abnormal, otherwise, determine that described antenna oscillator is normal.
9. an integrated monitor equipment, is characterized in that, comprising:
Logarithmic detector is used for receiving the signal transmission of antenna for base station oscillator, and carries out detection, and the direct current signal of the signal transmission of outputting base station antenna oscillator is to analog to digital converter;
Analog to digital converter is used for converting the direct current signal of the signal transmission of antenna for base station oscillator to digital signal, and exports to microcontroller;
Microcontroller be used for to be determined the amplitude of variation of described digital signal in setting-up time length, during greater than the amplitude of variation threshold value that sets in advance, determines that described antenna oscillator is abnormal when this amplitude of variation, otherwise, determine that described antenna oscillator is normal.
10. equipment according to claim 9, is characterized in that, described integrated monitor equipment also comprises the serial ports unit, wherein:
Described microcontroller, also be used for when definite described antenna oscillator extremely after, generate the alarm signal corresponding with this antenna oscillator, and export to the serial ports unit;
Described serial ports unit sends to the control platform after being used for converting described alarm signal to serial signal.
11. equipment according to claim 10 is characterized in that, described integrated monitor equipment also comprises embedded unit, wherein:
Described serial ports unit sends to embedded unit after also being used for converting described alarm signal to serial signal;
Described embedded unit is used for adopting antenna data interface AISG agreement this serial signal to be embedded the radiofrequency signal of antenna for base station oscillator emission, sends to the control platform by the radio-frequency cable that connects antenna port and base station.
12. an integrated monitor equipment is characterized in that, comprises at least one control module, wherein, each control module specifically comprises:
Change-over switch is used for selecting the signal transmission of antenna for base station oscillator to export to wave detector;
Wave detector is used for the signal transmission of the antenna for base station oscillator of reception change-over switch output, and carries out detection, and the direct current signal of the signal transmission of outputting base station antenna oscillator is to controller;
Controller, be used for converting the direct current signal of the signal transmission of antenna for base station oscillator to digital signal, and the amplitude of variation of the interior described digital signal of definite setting-up time length, when this amplitude of variation during greater than the amplitude of variation threshold value that sets in advance, determine that described antenna oscillator is abnormal, otherwise, determine that described antenna oscillator is normal.
13. equipment according to claim 12, it is characterized in that, have a plurality of change-over switches in described control module, a plurality of change-over switches adopt cascade form to be connected, the RF1 of change-over switch and RF2 pin are respectively used to input the signal transmission of different base station antenna oscillator, and the RFC pin of change-over switch is used for to described wave detector or to the signal transmission of next stage change-over switch output through the antenna oscillator of this change-over switch selection.
14. equipment according to claim 12 is characterized in that, described integrated monitor equipment also comprises the breakout box that is connected with described each control module, wherein;
Described controller also is used for generating the alarm signal corresponding with this antenna oscillator, and exporting to breakout box after definite described antenna oscillator is abnormal;
Described breakout box sends to the control platform after being used for converting the alarm signal that receives to serial signal.
15. equipment according to claim 14 is characterized in that, described integrated monitor equipment also comprises embedded unit:
Described breakout box sends to embedded unit after also being used for converting the alarm signal that receives to serial signal;
Described embedded unit is used for adopting antenna data interface AISG agreement this serial signal to be embedded the radiofrequency signal of antenna for base station oscillator emission, sends to the control platform by the radio-frequency cable that connects antenna port and base station.
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| CN201110400049.2A CN102998547B (en) | 2011-09-08 | 2011-09-08 | Method and system for monitoring base station antenna element and integrated monitoring device |
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| CN201110400049.2A CN102998547B (en) | 2011-09-08 | 2011-09-08 | Method and system for monitoring base station antenna element and integrated monitoring device |
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| CN201110265386.5A Division CN102735957B (en) | 2011-04-06 | 2011-09-08 | Method and system for monitoring antenna oscillator of base station as well as integrated monitoring equipment |
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| CN102998547B CN102998547B (en) | 2014-12-31 |
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| CN108375699A (en) * | 2018-02-07 | 2018-08-07 | 重庆邮电大学 | DMB field portable intensity measurers |
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| CN102998547B (en) | 2014-12-31 |
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