CN102830634A - Function integration system - Google Patents
Function integration system Download PDFInfo
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- CN102830634A CN102830634A CN2012103054184A CN201210305418A CN102830634A CN 102830634 A CN102830634 A CN 102830634A CN 2012103054184 A CN2012103054184 A CN 2012103054184A CN 201210305418 A CN201210305418 A CN 201210305418A CN 102830634 A CN102830634 A CN 102830634A
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Abstract
A function integration system comprises at least two wireless communication modules, a switching unit and a control unit. The switching unit is connected between the communication modules and an antenna. The control unit is used for outputting a switch control signal. The switch control signal is used for controlling the switching unit to switch to communicate with one of the wireless communication module and the antenna. Interference among functional modules in a system integrated with a plurality of functional modules is lowered.
Description
Technical field
The present invention relates to technical field of integrated circuits, particularly the function integrated system.
Background technology
Along with the Highgrade integration of circuit board, the functional integration of electronic equipment is increasingly high, and power consumption is also more and more lower.Will be more functional module (being also referred to as functional chip) to be integrated in the same system be the inexorable trend of technical progress.
Yet, a plurality of functional modules are integrated the problem that exists the signal between the functional module to disturb inevitably.These signals disturb the interference to low frequency signal of the interference that comprises between the homogenous frequency signal and high-frequency signal.
With the homogenous frequency signal interference is example; There is the frequency of wireless signal of some wireless communication modules transmission identical or in identical frequency range at present; Like WIFI module, bluetooth (BT) module and radio frequency (RF) module; The frequency of the wireless signal of its transmission is 2.4GHz, can produce interference each other if these modules are worked simultaneously, thereby influence is sent or receptivity.
Therefore, the signal that how to reduce the function integrated system disturbs, and especially the interference between the homogenous frequency signal becomes present problem demanding prompt solution.
Summary of the invention
The present invention will solve is the interference problem between the functional module in the system of existing integrated a plurality of functional modules.
For solving the problems of the technologies described above, embodiment of the present invention provides a kind of function integrated system, comprising: at least two wireless communication modules; Switch unit is connected between said wireless communication module and the antenna; Control module is used for output switch control signal, and said switch controlling signal is used to control said switch unit and switches connection wherein a wireless communication module and antenna.
Optional, said control module comprises: first dispensing unit is used to dispose said switch controlling signal and in first predetermined period, switches to each switch controlling signal corresponding to wireless communication module in turn.
Optional, said control module also comprises: first detecting unit is used to detect whether a kind of wireless signal that will transmit is only arranged in the Preset Time scope; Said first dispensing unit also is used for when said first detection only has a kind of wireless signal that will transmit in the Preset Time scope, disposes said switch controlling signal and is the switch controlling signal corresponding to the said wireless signal that will transmit and the lasting schedule time.
Optional, said control module comprises: second detecting unit is used to detect whether the wireless signal that will transmit is arranged; Second dispensing unit; Be used in said second detection when the wireless signal that will transmit is arranged; Said switch controlling signal is configured to the switch controlling signal corresponding to the said wireless signal that will transmit, is communicated with the wireless communication module that is used to transmit the said wireless signal that will transmit and antenna and breaks off being connected of other wireless communication modules and antenna to control said switch unit.
Optional, said second detecting unit adopts the mode of poll to detect each wireless communication module, with the wireless signal that determines whether to transmit and the type of said wireless signal.
Optional, said second dispensing unit is used for when at least two kinds of wireless signals that will transmit are arranged, and disposes said switch controlling signal and in second predetermined period, switches to each switch controlling signal corresponding to the said wireless signal that will transmit in turn.
Optional; Said second dispensing unit also is used for when said second detection only has a kind of wireless signal that will transmit in the Preset Time scope, disposes said switch controlling signal and is the switch controlling signal corresponding to the said wireless signal that will transmit and the lasting schedule time.
Optional, said switch unit is used to receive said switch controlling signal, to be communicated with corresponding to the wireless communication module of said switch controlling signal and antenna and to break off being connected of other wireless communication modules and antenna.
Optional, be used to receive said switch controlling signal corresponding to the wireless communication module of said switch controlling signal, with the output start signal with turn-off control signal; Said switch unit is used to receive said start signal, to be communicated with said wireless communication module and antenna corresponding to said switch controlling signal; Other wireless communication modules are used to receive said shutoff control signal, with the output cut-off signals; Said switch unit also is used to receive said cut-off signals, to break off being connected of said other wireless communication modules and antenna.
Optional, said function integrated system also comprises: power supply unit comprises reference power supply output terminal and earthing power supply output terminal; Power conversion unit is connected with the power input of each wireless communication module, is used for converting said reference power supply into correspond respectively to said each wireless communication module power supply.
Optional, said power conversion unit comprises: first converting unit is used for said reference power supply is carried out step-down and up-flow; Second converting unit is used for said reference power supply is carried out step-down.
Optional, the ground connection input end of said wireless communication module is connected with the earthing power supply output terminal of said power supply unit through magnetic bead or inductance element.
Optional, said function integrated system also comprises: circuit board, and said circuit board comprises first circuit region, second circuit district and isolated area; Said wireless communication module, switch unit and control module are integrated in the high-frequency functions module, and said high-frequency functions module is arranged at said first circuit region; Said second circuit district is provided with the low frequency functional module; Said isolated area between said first circuit region and second circuit district, the connecting portion that is provided with insulation tank and connects said first circuit region and second circuit district.
Optional; Described function integrated system also comprises power circuit; Said power circuit comprises first power output end and second source output terminal; Said first power output end is suitable for to said high-frequency functions module first power supply being provided, and said second source output terminal is suitable for to said low frequency functional module second source being provided.
Optional, said first power supply and second source are inequality.
Optional, first power output end of said power circuit is connected with the power input of said wireless communication module with first electric capacity through zero Europe resistance.
Technique scheme has following beneficial effect at least:
Switch being communicated with of a plurality of wireless communication modules and antenna through control module and switch unit; Making only has a wireless communication module to be communicated with antenna in a period of time; Than existing a plurality of wireless communication module co-operation; Can avoid the signal cross-talk between the wireless communication module, the transmission performance in the time of therefore can improving wireless communication module work.
In the Preset Time scope, detect when only having a kind of wireless signal to transmit, the wireless communication module that can be kept for transmitting this wireless signal is communicated with antenna in the given time always, has guaranteed the integrality and the accuracy of this transmission of wireless signals like this.
Each wireless communication module is supplied power separately, reduced the possibility that produces voltage ripple because of the interference of the power supply signal between the wireless communication module at power input.The ground connection input end of each wireless communication module can reduce the spuious possibility that is passed to other wireless communication modules that this wireless communication module produces through the magnetic bead single-point grounding when work.
High-frequency functions module and low frequency functional module are arranged at the different circuits district respectively; Separate through isolated area between the different circuits district with insulation tank; Can reduce the interference between the frequency of operation different functional, especially the high-frequency functions module is to the interference of low frequency functional module.
The fluctuation of the power supply signal through can reducing the high-frequency functions module at the power end of high-frequency functions module serial connection zero Europe resistance is to the influence of the power supply signal of low frequency functional module.
Description of drawings
Fig. 1 is the structural representation of the function integrated system of embodiment of the present invention;
Fig. 2 is the structural representation of the function integrated system of the embodiment of the invention 1;
Fig. 3 is the structural representation of the function integrated system of the embodiment of the invention 2;
Fig. 4 is the structural representation of the function integrated system of the embodiment of the invention 3;
Fig. 5 is the partial structurtes synoptic diagram of the function integrated system of the embodiment of the invention 4;
Fig. 6 is the structural representation of the function integrated system of the embodiment of the invention 5.
Embodiment
Embodiment of the present invention provides a kind of function integrated system, and is as shown in Figure 1, comprising:
At least two wireless communication module M1, M2 ..., Mn;
Switch unit A1, be connected said wireless communication module M1, M2 ..., between Mn and the antenna A3;
Control module A2 is used for output switch control signal, and said switch controlling signal is used to control said switch unit A1 and switches connection wherein a wireless communication module and antenna.
Utilizing switch unit A1 and control module A2 to make only has a wireless communication module to be communicated with antenna A3 in a period of time; Avoid the caused signal cross-talk each other of a plurality of wireless communication module co-operation like this, thereby influenced the problem of transmission performance.Said transmission comprises to be sent and receives.
Below in conjunction with embodiment and accompanying drawing, comprise three wireless communication modules with said system, i.e. WIFI module, BT module and RF module, and three shared antennas of wireless communication module are that example is elaborated to embodiment of the present invention.
Those skilled in the art should be appreciated that in other embodiments, and said wireless communication module is not limited to above-mentioned cited three kinds, for example can also be 2G module, 3G module etc.Each wireless communication module also can not shared same antenna; And use independently antenna respectively; Be that antenna is corresponding one by one with wireless communication module, each wireless communication module is connected with corresponding antenna through switch unit, the switch controlling signal of control module output; Through the switching of said switch unit, making is only having a wireless communication module to be communicated with corresponding antenna in the section sometime.
Embodiment 1
Because the frequency of the transmission signals of WIFI module, BT module and RF module is 2.4GHz, therefore three communication modules can a shared antenna, to save hardware cost.But also because the frequency of the transmission signals of WIFI module, BT module and RF module is 2.4GHz, so the same frequency of these three communication modules disturbs also particularly serious.
The function integrated system of present embodiment is as shown in Figure 2, except comprising WIFI module M1, BT module M2 and RF module M3, also comprises switch unit A1 and control module A2.Said control module A2 comprises the first dispensing unit A21, and the said first dispensing unit A21 is used to dispose said switch controlling signal and in first predetermined period, switches to each switch controlling signal corresponding to wireless communication module in turn.Said first predetermined period is confirmed according to practical application, the general temporal summation that satisfies more than or equal at least one packet of each wireless communication module reception, and for example the scope of first predetermined period can be 3ms ~ 300ms.
Particularly, be 15ms with first predetermined period, the time that mean allocation takies antenna for each wireless communication module is that 5ms is an example, in the time period, the switch controlling signal of first dispensing unit A21 output is corresponding to WIFI module M1 at 0 ~ 5ms; In time period, the switch controlling signal of first dispensing unit A21 output is corresponding to BT module M2 at 5ms ~ 10ms; In time period, the switch controlling signal of first dispensing unit A21 output is corresponding to RF module M3 at 10ms ~ 15ms; In time period, the switch controlling signal of first dispensing unit A21 output is corresponding to WIFI module M1 at 15 ~ 20ms; In time period, the switch controlling signal of first dispensing unit A21 output is corresponding to BT module M2 at 20ms ~ 25ms; In time period, the switch controlling signal of first dispensing unit A21 output is corresponding to RF module M3 at 25ms ~ 30ms; Circulate with this.
Need to prove that the transfer sequence of said switch controlling signal is not limited to the above-mentioned example of takeing, for example, also can be earlier corresponding to the BT module, then corresponding to the RF module, again corresponding to the WIFI module; Perhaps earlier corresponding to the RF module, then corresponding to the WIFI module, again corresponding to the BT module.In addition, in one-period, the time that each wireless communication module takies antenna can not be mean allocation also, for example, distributes to the time of WIFI module and can grow relatively, and the time of BT module and RF module of distributing to can lack relatively.
In the present embodiment, switch unit A1 comprises 3 control input end COM1, COM2 and COM3,3 signal transmission ends S1, S2 and S3 and antenna connection terminal S4.The steering logic of said switch unit A1 is: as control input end COM1=1, COM2=0, COM3=0, signal transmission ends S1 is communicated with antenna connection terminal S4, and signal transmission ends S2, S3 and antenna connection terminal S4 break off; As control input end COM1=0, COM2=1, COM3=0, signal transmission ends S2 is communicated with antenna connection terminal S4, and signal transmission ends S1, S3 and antenna connection terminal S4 break off; As control input end COM1=0, COM2=0, COM3=1, signal transmission ends S3 is communicated with antenna connection terminal S4, and signal transmission ends S1, S2 and antenna connection terminal S4 break off.
Control module A2 and each wireless communication module communicate through USB interface, and control module A2 is sent to corresponding wireless communication module with said switch controlling signal.
Particularly; Switch controlling signal corresponding to WIFI module M1 is sent to WIFI module M1; WIFI module M1 output start signal (present embodiment is a logical one) COM1 to the control input end, and WIFI module M1 also exports to turn-off and controls signal to BT module M2 and RF module M3; After BT module M2 receives said shutoff control signal, output cut-off signals (present embodiment is a logical zero) COM2 to the control input end; After RF module M3 received said shutoff control signal, the output cut-off signals is COM3 to the control input end.Like this, WIFI module M1 is communicated with antenna A3 through signal transmission ends S1, antenna connection terminal S4, realizes the transmission and the reception of WIFI signal.And BT module M2 and RF module M3 are not communicated with antenna A3, therefore reduced the transmission of WIFI signal is disturbed.
Switch controlling signal corresponding to BT module M2 is sent to BT module M2, and BT module M2 output start signal is COM2 to the control input end, and BT module M2 also exports to turn-off and controls signal to WIFI module M1 and RF module M3; After WIFI module M1 received said shutoff control signal, the output cut-off signals is COM1 to the control input end; After RF module M3 received said shutoff control signal, the output cut-off signals is COM3 to the control input end.Like this, BT module M2 is communicated with antenna A3 through signal transmission ends S2, antenna connection terminal S4, realizes the transmission and the reception of BT signal.And WIFI module M1 and RF module M3 are not communicated with antenna A3, therefore reduced the transmission of BT signal is disturbed.
Switch controlling signal corresponding to RF module M3 is sent to RF module M3, and RF module M3 output start signal is COM3 to the control input end, and RF module M3 also exports to turn-off and controls signal to WIFI module M1 and BT module M2; After WIFI module M1 received said shutoff control signal, the output cut-off signals is COM1 to the control input end; After BT module M2 received said shutoff control signal, the output cut-off signals is COM2 to the control input end.Like this, RF module M3 is communicated with antenna A3 through signal transmission ends S3, antenna connection terminal S4, realizes the transmission and the reception of RF signal.And WIFI module M1 and BT module M2 are not communicated with antenna A3, therefore reduced the transmission of RF signal is disturbed.
It will be appreciated by those skilled in the art that; The structure that realizes said switch unit A1 can have multiple; For example switch unit A1 can be the electronic switch of a high frequency, and said electronic switch has three control input ends, three signal transmission ends and an antenna connection terminal; Perhaps; Switch unit A1 can comprise three on-off elements; Each on-off element is connected between WIFI module M1, BT module M2, RF module M3 and the antenna A3; The control end that each on-off element has its unlatching of control or closes, the control end of said three on-off elements is connected with WIFI module M1, BT module M2, RF module M3 respectively.
The first dispensing unit A21 of present embodiment adopts time-division switching way deploy switch control signal; Switch unit A1 is based on the switch controlling signal that is disposed; Take said antenna A3 to control WIFI module M1, BT module M2 and RF module M3 timesharing, to transmit wireless signal (packet in other words) separately at times.Through controlling the mode that WIFI module M1, BT module M2 and RF module M3 use antenna in turn, solved the problem of disturbing with frequently, guaranteed the signal transmission performance of each wireless communication module.And, be the ms level because each wireless communication module takies the time of antenna, therefore also can reach each wireless communication module almost is the effect of working simultaneously.
Further, the said control module A2 of present embodiment can also comprise: the first detecting unit A22 is used to detect whether a kind of wireless signal that will transmit is only arranged in the Preset Time scope; The said first dispensing unit A21 also is used for detecting when a kind of wireless signal that will transmit is only arranged in the Preset Time scope at the said first detecting unit A22, disposes said switch controlling signal and is the switch controlling signal corresponding to the said wireless signal that will transmit and the lasting schedule time.
For instance; The mode of poll that can adopt the first detecting unit A22 detects WIFI module M1, BT module M2 and RF module M3, for example, is the cycle to detect each wireless communication module in turn with 5ms; To confirm whether each wireless communication module needs transmitting wireless signals; Only need transmit a kind of wireless signal when the first detecting unit A22 detects in the Preset Time scope, for example during the WIFI signal, first dispensing unit A21 output is corresponding to the switch controlling signal of the WIFI module M1 and the lasting schedule time.That is to say; When long-time (in the Preset Time scope) do not have BT signal and the transmission of RF signal demand; Can keep WIFI module M1 in a period of time, to be communicated with always,, promote the transmission performance of WIFI signal to guarantee the integrality and the accuracy of the transmission of WIFI signal with antenna.At the fixed time, the first dispensing unit A21 still adopts the time-division switching way to dispose said switch controlling signal.Whether the first detecting unit A22 detects needs transmitting wireless signals can adopt prior art, no longer launches explanation at this.The said Preset Time scope and the schedule time can preestablish according to actual application environment, and for example, the Preset Time scope can be 60ms, and the schedule time can be 30ms.
Present embodiment mainly is with the difference of embodiment 1: the structure of switch unit is different; The switch controlling signal of control module A2 output directly is sent to switch unit A1; Promptly directly control the switch switching of switch unit A1, rather than switch through the switch of wireless communication module control switch unit A1 by control module A2.In the present embodiment, can omit communication between each wireless communication module.
Particularly, as shown in Figure 3, said switch unit A1 comprises control end CT, signal transmission ends S1, S2, S3 and antenna connection terminal S4.Control end CT receives said switch controlling signal, if said switch controlling signal is the switch controlling signal corresponding to WIFI module M1, signal transmission ends S1 is communicated with antenna connection terminal S4, and signal transmission ends S2, S3 and antenna connection terminal S4 break off; If said switch controlling signal is the switch controlling signal corresponding to BT module M2, signal transmission ends S2 is communicated with antenna connection terminal S4, and signal transmission ends S1, S3 and antenna connection terminal S4 break off; If said switch controlling signal is the switch controlling signal corresponding to RF module M3, signal transmission ends S3 is communicated with antenna connection terminal S4, and signal transmission ends S1, S2 and antenna connection terminal S4 break off.
Embodiment 3
Present embodiment mainly is with the difference of embodiment 1: the realization of control module is different, and is as shown in Figure 4, and said control module A2 comprises: the second detecting unit A23 is used to detect whether the wireless signal that will transmit is arranged; The second dispensing unit A24; Be used for when the said second detecting unit A23 detects the wireless signal that will transmit; Said switch controlling signal is configured to the switch controlling signal corresponding to the said wireless signal that will transmit, is communicated with the wireless communication module that is used to transmit the said wireless signal that will transmit and antenna and breaks off being connected of other wireless communication modules and antenna to control said switch unit A1.
During practical implementation, the said second detecting unit A23 can adopt the mode of poll to detect WIFI module, BT module and RF module, with the wireless signal that determines whether to transmit and the type of said wireless signal.If will transmit the WIFI signal, second dispensing unit A24 output is corresponding to the switch controlling signal of WIFI module M1; If will transmit the BT signal, second dispensing unit A24 output is corresponding to the switch controlling signal of BT module M2; If will transmit the RF signal, second dispensing unit A24 output is corresponding to the switch controlling signal of RF module M3.
When the second detecting unit A23 detected the two or more wireless signal that will transmit, the second dispensing unit A24 was each switch controlling signal corresponding to the said wireless signal that will transmit in the said control signal of the second predetermined period intra.Will transmit WIFI signal and BT signal is example; The second dispensing unit A24 in turn output corresponding to the switch controlling signal of WIFI module M1 with corresponding to the switch controlling signal of BT module M2; For example in the time period, export switch controlling signal corresponding to WIFI module M1 at 0 ~ 5ms; In time period, output is corresponding to the switch controlling signal of BT module M2 at 5ms ~ 10ms; In time period, output is corresponding to the switch controlling signal of WIFI module M1 at 10ms ~ 15ms; In time period, output is corresponding to the switch controlling signal of BT module M2 at 15ms ~ 20ms; Circulate with this.The setting of said second predetermined period can be similar with said first predetermined period.
After the wireless signal that will transmit was accomplished transmission through wireless communication module and antenna, the second detecting unit A23 continued to detect whether the signal that will transmit is arranged.
Further; The said second dispensing unit A24 also is used for detecting when a kind of wireless signal that will transmit is only arranged in the Preset Time scope at the said second detecting unit A23, disposes said switch controlling signal and is the switch controlling signal corresponding to the said wireless signal that will transmit and the lasting schedule time.About the explanation of this part can reference implementation example 1 the relevant portion explanation.
The second dispensing unit A24 of present embodiment comes the deploy switch control signal based on the real-time detection of the second detecting unit A23; Switch unit A1 is based on the switch controlling signal that is disposed; The corresponding wireless communication module of control takies antenna A3; And other wireless communication modules break off and being connected of antenna A3, and have solved the problem of disturbing with frequently thus, and the assurance wireless communication module can send or receive wireless signal exactly.
Embodiment 4
In order further to reduce the interference between each wireless communication module, present embodiment has been done improvement to the power supply input of wireless communication module, disturbs with the power supply that reduces between each wireless communication module.
Fig. 5 shows the partial structurtes synoptic diagram of the function integrated system of present embodiment, and said function integrated system also comprises: power supply unit A4 and power conversion unit A5.Fig. 5 only shows being connected of power supply unit A4, power conversion unit A5 and WIFI module M1, BT module M2, RF module M3, and other structures can be with reference to the foregoing description.
In the present embodiment, said power supply unit A4 is the USB power supply, and said power supply unit A4 comprises reference power supply output terminal USB_VDD and earthing power supply output terminal USB_GND.The voltage of reference power supply USB_VDD is generally 5V, and electric current is the mA level, and the voltage of earthing power supply USB_GND is generally 0V.
Said power conversion unit A5 is connected with the power input of each wireless communication module, is used for converting said reference power supply USB_VDD into correspond respectively to said each wireless communication module power supply.Particularly, said power conversion unit A5 comprises 2 input end VDD0, GND0 and 3 output terminal VDD1, VDD2 and VDD3.Input end VDD0 connects reference power supply output terminal USB_VDD, input end GND0 input grounding power output end USB_GND.Output terminal VDD1 is connected with the power input VDDA of WIFI module M1, and output is suitable for the required power supply of WIFI module M1 work; Output terminal VDD2 is connected with the power input VDDB of BT module M2, and output is suitable for the required power supply of BT module M2 work; Output terminal VDD3 is connected with the power input VDDC of RF module M3, and output is suitable for the required power supply of RF module M3 work.
Power supply requirement by each wireless communication module is supplied power separately to each wireless communication module, has reduced the possibility that produces voltage ripple because of the interference of the power supply signal between the wireless communication module at power input.
Because the transient current in WIFI module M1 when work is bigger, so the power conversion unit A5 of present embodiment is when providing the power supply of WIFI module, need be to reference power supply USB_VDD step-down, and need to promote electric current.Said power conversion unit A5 further can comprise: the first converting unit A51 is used for said reference power supply USB_VDD is carried out step-down and up-flow; The second converting unit A52 is used for said reference power supply USB_VDD is carried out step-down, but can holding current constant.
In the present embodiment, as shown in Figure 5, the said first converting unit A51 can be DC-DC (DC-DC) module, and output terminal is VDD1 and VDD2; The said second converting unit A52 can be low pressure difference linearity voltage stabilizing (LDO) module, and output terminal is VDD3.Output terminal VDD1 output voltage is that 3.3V, electric current are that the power supply of A level is to power input VDDA; Output terminal VDD2 output voltage be 3.3V, electric current be the power supply of A level to power input VDDB, output terminal VDD3 output voltage is that 3.3V, electric current are that the power supply of mA level is to power input VDDC.
Need to prove; Present embodiment has utilized the DC-DC module to have two output terminals; The power supply of BT module M2 is also exported by the DC-DC module; And, be generally the mA level because the transient current in BT module M2 when work is little, can be that 3.3V, electric current are the power input VDDB of the power supply of mA level to BT module M2 through a LDO module output voltage more also in other embodiments therefore.
Further; As shown in Figure 5; The ground connection input end GNDA of WIFI module M1 can be connected with earthing power supply output terminal USB_GND through magnetic bead B1; The ground connection input end GNDB of BT module M2 can be connected with earthing power supply output terminal USB_GND through magnetic bead B2, and the ground connection input end GNDC of RF module M3 can be connected with earthing power supply output terminal USB_GND through magnetic bead B3.The ground connection input end of each wireless communication module can reduce the spuious possibility that is passed to other wireless communication modules that this wireless communication module produces through the magnetic bead single-point grounding when work.In other embodiments, the ground connection input end of said wireless communication module also can be connected with the earthing power supply output terminal of said power supply unit through inductance element.
Embodiment 5
The function integrated system of present embodiment comprises high-frequency functions module and low frequency functional module; The structure of said high-frequency functions module can be any structure of embodiment 1 ~ 3, and said low frequency functional module can comprise at least one in button detection module, infrared module and the audio identification module.Usually, the frequency of operation of said high-frequency functions module more than 1GHz, 2.4GHz ~ 5.0GHz for example, the frequency of operation of said low frequency functional module below 1MHz, 0 ~ 100KHz for example.
Please refer to Fig. 6, the function integrated system of present embodiment comprises: circuit board 1, said circuit board comprise first circuit region 11, second circuit district 12 and isolated area 13.
Said high-frequency functions module 111 is arranged at said first circuit region 11; Said low frequency functional module 121 is arranged at said second circuit district 12; The low frequency functional module 121 of present embodiment is the button detection module; It comprises a plurality of buttons 51 and circuit for detecting 52, and button 51 can be contact button or air type button, and circuit for detecting 52 is used to detect the triggering of button 51.
Said isolated area 13 between said first circuit region 11 and second circuit district 12, the connecting portion 132 that is provided with insulation tank 131 and connects said first circuit region 11 and second circuit district 12.
The signal that said insulation tank 131 is used to reduce to be arranged between the circuit in first circuit region 11 and the second circuit district 12 disturbs, and said insulation tank 131 can be arranged between high-frequency functions module 111 and the low frequency functional module 121.Said insulation tank 131 can not filled (or coating) any material, especially conductive material, makes insulation tank 131 become air groove.Because air is preferable megohmite insulant, so the signal that insulation tank 131 can reduce between high-frequency functions module 111 and the low frequency functional module 121 disturbs.Said insulation tank 131 also can be filled other megohmite insulants that are used to reduce interference between high-frequency functions module 111 and the low frequency functional module 121.The degree of depth of said insulation tank 131 can be set according to actual needs.In order to improve the antijamming capability effect of insulation tank 131, insulation tank 131 can run through said circuit board.The quantity of said insulation tank 131 can be greater than 1, links together through connecting portion 132 between the insulation tank 131.
The connecting portion 132 that connects said first circuit region 11 and second circuit district 12 can be used to be provided with the circuit connecting wire in first circuit region 11 and the second circuit district 12; The fastness that guarantees circuit board and connecting portion 132 can the bearer circuit connecting line the situation of wiring under, said insulation tank 131 can fill up isolated area 13 interior zones except that connecting portion 132.
Said first circuit region 11 also is provided with control circuit 41, and said connecting portion 132 is provided with the signal wire that connects said control circuit 41 and low frequency functional module.In the present embodiment, said control circuit 41 is MCU, and it is used to handle circuit for detecting 52 detected signals, and frequency of operation is about 32MHz.Because key press detecting circuit is strict to demand on signal quality, and the interference of the signal of 111 couples of MCU of high-frequency functions module is not very big, so MCU is arranged at first circuit region 11.Preferable, MCU is arranged at the position of first circuit region 11 near key press detecting circuit.
Further; As shown in Figure 6; The function integrated system of present embodiment also comprises power circuit 2; Said power circuit 2 comprises first power output end 21 and second source output terminal 22, and said first power output end 21 is suitable for to said high-frequency functions module 111 first power supply being provided, and said second source output terminal 22 is suitable for to said low frequency functional module 121 second source being provided.
Said first power supply can be that magnitude of voltage is identical, current value is inequality with second source, or magnitude of voltage is inequality, current value is identical, or magnitude of voltage and current value are all inequality.In the present embodiment, first power supply of said first power output end, 21 output 3.3V, 10A, the second source of said second source output terminal 22 output 3.3V, 10mA.
In the present embodiment, first power output end 21 of said power circuit 2 is connected with the power end of high-frequency functions module 111 with first capacitor C 1 through zero Europe resistance R 1.Wherein, the power end of high-frequency functions module 111 comprises the power input of each wireless communication module, for example, the WIFI module power input VDDA, the power input VDDB of BT module and the power input VDDC of RF module.
First power supply is the required power supply of high-frequency functions module 111, its current value usually greater than in addition much larger than the current value of second source, even if therefore produce the wave disturbance of little line on first power supply, this disturbance also can produce very big interference to second source.Big encapsulation, high-precision zero Europe resistance R 1 can guarantee to reduce the interference of first power supply to second source under the constant basically situation of pressure drop.
The capacitance of said first capacitor C 1 can be 10 μ F-100 μ F, and the pressure drop rapid drawdown on the high-frequency functions module 111 that first capacitor C 1 of big encapsulation, big capacitance can rise high-current leading replenishes.In other embodiments, first capacitor C 1 also can be omitted.
Need to prove; First power supply that the power circuit 2 of present embodiment provides and high-frequency functions module 111 required power supplys adapt; And in other embodiments; If the power supply that said power circuit provides is not suitable for high-frequency functions module 111, for example voltage is higher or electric current is less, then can also utilize change-over circuit that the power supply that said power circuit provides is carried out voltage and/or current conversion; With the power supply that each wireless communication module in output and the high-frequency functions module 111 adapts, the structure of said change-over circuit can reference implementation example 4 described power conversion units.
Please continue with reference to figure 6, the second source output terminal 22 of said power circuit 2 can be connected with the power end of said low frequency functional module 121, the power end of control circuit 41 through filtering circuit 3.Said filtering circuit 3 comprises: magnetic bead B4, the first filter capacitor C31 and the second filter capacitor C32; First end of said magnetic bead B4 connects the second source output terminal 22 of said power circuit 2 and first end of the first filter capacitor C31; Second end of said magnetic bead B4 connects the power end of said circuit for detecting 52, the power end of MCU and first end of the second filter capacitor C32, the second end ground connection of second end of the said first filter capacitor C31 and the second filter capacitor C32.
In sum, technique scheme can the reduction system in phase mutual interference between a plurality of functional modules, thereby improve the integrated level and the performance of system.
Though the present invention discloses as above with preferred embodiment, the present invention is defined in this.Any those skilled in the art are not breaking away from the spirit and scope of the present invention, all can do various changes and modification, so protection scope of the present invention should be as the criterion with claim institute restricted portion.
Claims (23)
1. a function integrated system is characterized in that, comprising:
At least two wireless communication modules;
Switch unit is connected between said wireless communication module and the antenna;
Control module is used for output switch control signal, and said switch controlling signal is used to control said switch unit and switches connection wherein a wireless communication module and antenna.
2. function integrated system as claimed in claim 1; It is characterized in that; Said control module comprises: first dispensing unit is used to dispose said switch controlling signal and in first predetermined period, switches to each switch controlling signal corresponding to wireless communication module in turn.
3. function integrated system as claimed in claim 2 is characterized in that, said control module also comprises: first detecting unit is used to detect whether a kind of wireless signal that will transmit is only arranged in the Preset Time scope; Said first dispensing unit also is used for when said first detection only has a kind of wireless signal that will transmit in the Preset Time scope, disposes said switch controlling signal and is the switch controlling signal corresponding to the said wireless signal that will transmit and the lasting schedule time.
4. function integrated system as claimed in claim 1 is characterized in that, said control module comprises:
Second detecting unit is used to detect whether the wireless signal that will transmit is arranged;
Second dispensing unit; Be used in said second detection when the wireless signal that will transmit is arranged; Said switch controlling signal is configured to the switch controlling signal corresponding to the said wireless signal that will transmit, is communicated with the wireless communication module that is used to transmit the said wireless signal that will transmit and antenna and breaks off being connected of other wireless communication modules and antenna to control said switch unit.
5. function integrated system as claimed in claim 4 is characterized in that, said second detecting unit adopts the mode of poll to detect each wireless communication module, with the wireless signal that determines whether to transmit and the type of said wireless signal.
6. function integrated system as claimed in claim 4; It is characterized in that; Said second dispensing unit is used for when at least two kinds of wireless signals that will transmit are arranged, and disposes said switch controlling signal and in second predetermined period, switches to each switch controlling signal corresponding to the said wireless signal that will transmit in turn.
7. function integrated system as claimed in claim 4; It is characterized in that; Said second dispensing unit also is used for when said second detection only has a kind of wireless signal that will transmit in the Preset Time scope, disposes said switch controlling signal and is the switch controlling signal corresponding to the said wireless signal that will transmit and the lasting schedule time.
8. function integrated system as claimed in claim 1; It is characterized in that; Said switch unit is used to receive said switch controlling signal, to be communicated with corresponding to the wireless communication module of said switch controlling signal and antenna and to break off being connected of other wireless communication modules and antenna.
9. function integrated system as claimed in claim 1 is characterized in that, is used to receive said switch controlling signal corresponding to the wireless communication module of said switch controlling signal, with the output start signal with turn-off control signal; Said switch unit is used to receive said start signal, to be communicated with said wireless communication module and antenna corresponding to said switch controlling signal; Other wireless communication modules are used to receive said shutoff control signal, with the output cut-off signals; Said switch unit also is used to receive said cut-off signals, to break off being connected of said other wireless communication modules and antenna.
10. function integrated system as claimed in claim 1 is characterized in that, said wireless communication module is WIFI module, bluetooth module or radio-frequency module.
11. function integrated system as claimed in claim 1 is characterized in that, the shared same antenna of said at least two wireless communication modules.
12. function integrated system as claimed in claim 1 is characterized in that, also comprises:
Power supply unit comprises reference power supply output terminal and earthing power supply output terminal;
Power conversion unit is connected with the power input of each wireless communication module, is used for converting said reference power supply into correspond respectively to said each wireless communication module power supply.
13. function integrated system as claimed in claim 12 is characterized in that, said power conversion unit comprises:
First converting unit is used for said reference power supply is carried out step-down and up-flow;
Second converting unit is used for said reference power supply is carried out step-down.
14. function integrated system as claimed in claim 12 is characterized in that, the ground connection input end of said wireless communication module is connected with the earthing power supply output terminal of said power supply unit through magnetic bead or inductance element.
15. function integrated system as claimed in claim 1 is characterized in that, also comprises: circuit board, said circuit board comprises first circuit region, second circuit district and isolated area;
Said wireless communication module, switch unit and control module are integrated in the high-frequency functions module, and said high-frequency functions module is arranged at said first circuit region;
Said second circuit district is provided with the low frequency functional module;
Said isolated area between said first circuit region and second circuit district, the connecting portion that is provided with insulation tank and connects said first circuit region and second circuit district.
16. function integrated system as claimed in claim 15 is characterized in that, said insulation tank is an air groove.
17. function integrated system as claimed in claim 15 is characterized in that, said first circuit region also is provided with control circuit, and said connecting portion is provided with the signal wire that connects said control circuit and low frequency functional module.
18. function integrated system as claimed in claim 15; It is characterized in that; Also comprise power circuit; Said power circuit comprises first power output end and second source output terminal, and said first power output end is suitable for to said high-frequency functions module first power supply being provided, and said second source output terminal is suitable for to said low frequency functional module second source being provided.
19. function integrated system as claimed in claim 18 is characterized in that, said first power supply and second source are inequality.
20. function integrated system as claimed in claim 18 is characterized in that, first power output end of said power circuit is connected with the power input of said wireless communication module through zero Europe resistance.
21. function integrated system as claimed in claim 18 is characterized in that, first power output end of said power circuit is connected with the power input of said wireless communication module with first electric capacity through zero Europe resistance.
22. function integrated system as claimed in claim 18; It is characterized in that; The second source output terminal of said power circuit is connected through the power end of filtering circuit with said low frequency functional module; Said filtering circuit comprises: magnetic bead, first filter capacitor and second filter capacitor; First end of said magnetic bead connects the second source output terminal of said power circuit and first end of first filter capacitor, and second end of said magnetic bead connects the power end of said low-frequency channel and first end of second filter capacitor, the second end ground connection of second end of said first filter capacitor and second filter capacitor.
23. function integrated system as claimed in claim 18 is characterized in that, said low frequency functional module comprises at least one in button detection module, infrared module and the audio identification module.
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| CN201210305418.4A CN102830634B (en) | 2012-08-24 | 2012-08-24 | Function i ntegration system |
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