DE3012122A1 - TELEPHONE ALARM TRANSMITTER - Google Patents

Description

description

The present invention "relates to alarm condition transmission devices, which are able to automatically dial telephone numbers and automatically receive messages from the monitored Place where the transmitter is located above the switched on To send the telephone network to the subscriber automatically called by the sender.

In known devices of this type, the messages sent when an alarm condition occurs are in the form of human messages Speech recorded on a Piagnet tape. Such devices are disadvantageous insofar as they make mechanical devices necessary for the belt drive, which on the one hand are prone to failure and can be inhibited in their operation, and on the other hand entail high costs if high reliability is desired. Another disadvantage of these known devices is that there is no written statement regarding the alarm status Recording is provided unless an operator make a handwritten note on the called subscriber side.

Transmitting devices are also known in which the message is coded in the form of pulse trains in the voice frequency range, which is a special decoder on the called party Requires, making the system complicated and expensive.

In the case of the known automatic transmission devices, the first programming or modification of the telephone numbers to be called is made the programming of a permanent memory or an optical or magnetic recording medium is required, or coding by means of wire connections is necessary

03Q040 / 0889

agile. The programming is thus carried out difficult and costly, and it is a special programming facility necessary.

The transmission device according to the invention is intended to avoid the disadvantages outlined above. In the case of the transmission device according to the invention the transmitted message appears on the called subscriber side in plain text on a standard teleprinter that has a Standard modulator demodulator (modem) connected to the telephone is. The transmitted message not only needs to contain the origin of the call, but can also contain other data, which are of interest to the called supervisor, e.g. the accuracy of the sensor that triggered the alarm, the Time elapsed since the alarm condition occurred, etc.

Via the transmission device according to the invention, parameters can be programmed specifically for each transmission device from a remote location Place out via the connected telephone network with the help of a telex installed on the supervisor done with keyboard. (The telephone numbers to be called, the Origin of the call, the delay time before triggering a local alarms, etc ..) Thus, with the same equipment, namely a teleprinter equipped with a keyboard and a modem that monitors both alarm messages and programming newly installed transmitters and change the parameters of already installed transmitting devices, if this is necessary. Due to this peculiarity of the present Invention simplifies programming, and costs are reduced.

030040 / 0BS9

The transmitter according to the invention can operate in two different cycles. The algorithms of the "two cycles are in one monolithic read-only memory and are saved by a executed monolithic microprocessor. The first cycle is the alarm cycle. It begins with the physical entry the alarm status (e.g. the interruption of a current flowing through Ribbon). The transmitting device now checks whether its non-volatile memory, in which the operating parameters are saved are programmed visually. This check is carried out using redundancy words that are generated during a programming cycle (see below) written into memory. Is the memory not correctly written (in the case that the transmitter is new and not yet is used), the transmitter triggers a local alarm if the monitored point is appropriately equipped. Under The sender does not drop any telephone numbers under the conditions mentioned. Is the non-volatile memory working properly described, the transmitting device calls those participants whose phone numbers are recorded in a list contained in the memory are. As soon as the called party has picked up, the transmitting device identifies the carrier frequency of the modem at the other end of the line and sends its message modulated according to the modem's standards. The device is waiting then for a receipt that corresponds to the letters entered on the keypad on the subscriber's side. Has the invention If the sending device receives the acknowledgment, it completes the alarm cycle. In the event that the participants do not answer or that the sending device does not receive an acknowledgment for the messages sent, the device calls the other participants accordingly the phone numbers contained in the saved list, in which the list is queried cyclically.

If within a preprogrammed during a programming cycle Time (see below) the transmitting device has still not received an answer or an acknowledgment, it triggers a local alarm if

the monitored point is appropriately equipped and drives continue calling the programmed subscribers one at a time until either an acknowledgment is received or until a predetermined total time has elapsed, this total time also being preprogrammed during a programming cycle.

The second work cycle in which the transmitter according to the invention can work is the programming cycle. The programming cycle is initiated by manually pressing a key on the transmitter to make the transmitter ready for programming. The telephone line is then switched on and a dialogue with the subscriber at the other end of the line, always via the telex with a keyboard and a modem. The dialogue consists of questions asked by the transmitting device, which are put on the teletype for the operator appear visible, and responses entered by the operator through the keyboard and through the transmitting device analyzed and stored in the non-volatile memory. The operator inputs contain syntactic or semantic errors, the sending device repeats the questions until a correct answer is received.

The programming cycle ends when, after the entirety the parameter is correctly entered in the receiving device, this on a special one entered by the operator Command is waiting, which indicates to the device to "hang up". Then it inserts redundancy words into the memory so that the device can in the event of an alarm cycle (see above) can check whether it is Memory is programmed correctly, then the cycle is completed. You can see that the programming cycles are optical can be repeated an infinite number of times, i.e. each time, if necessary, all or part of the parameters to change the parameters of the transmitting device.

030040/0883

In the following an embodiment of the invention is explained in more detail with reference to the drawing. The only Pigur shows a block diagram of a Sen de device according to the invention.

The device contains a processor 3 of the type 6802 from MOTOROLA with 128 memory locations, each comprising 8 bits, in read / write memory 5- The programs executed by the processor are in a read memory 4 of type 27 16 from IUTEL saved. The memory 4 has a capacity of 2048 × 8 bits. The decoder 6 of the type 74 LS 138 receives the more significant address bits from the processor and generates selection signals with which the circuits 4, 7 _? 8 and 9 are addressable. A multiplexer 9 can convert one of the input signals 21 to 27, which is selected by 3 bits of the address bus 31, to the bit of the more significant digits of the data bus 30. The output register (of the type 74 LS 259) consists of 8 register positions each comprising 1 bit. The individual register positions can be addressed individually. The bits supplied are one bit of the low-order address parts, and an address is supplied which is determined by 3 further bits of the address bus 31. The non-volatile memory 8 (of the 51 01 type) is designed in CMOS technology; it is selected not only by the decoder 6, but also via an integrator network 15 by the output register 4-0.

In the idle state, the potential line 2 floats, so that only the non-volatile memory 8 and the logic element 10 (from Type 40 78) are live because they are powered by a battery. In this operating state, the power consumption is of the transmitting device is negligible.

030040/0889

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As soon as one of the input lines 21 "to 27 is activated, closes the relay 11 activated by the logic element 10 and supplies the components of the device, which until then were at potential 2, with potential 1 of the battery. Then, supplied with voltage, the processor 3 performs its in the fixed memory 4 programmed initialization by and actuates the output register 41 so that the components of the Device to be connected to the battery 12.

The processor 3 uses the output register 44 to connect to the telephone line, to set the telephone numbers and to disconnect the telephone line by means of the relay 14. The output register 43 enables the processor to directly apply the modulation via frequency hopping in accordance with the postal and telecommunications standards submit. The filter 19 is an active low-pass filter, the task of which is to remove the high-frequency component to suppress the one occurring in the register Square wave signal is included. Activation of output 42 enables processor 3 to trigger a local alarm, if so a corresponding device is connected to the output 42. The voice signal that relates to different telephone tones related information, on the one hand, and that generated by the modem connected to the other end of the telephone line Modulation, on the other hand, are amplified to saturation by an operational amplifier 18 of the 2M 324 type and then The processor 3 is supplied via an interrupt input 100. This arrangement allows the programmed frequency to be measured with simple logical filtering. The input line 21 interrogated by the multiplexer 9 shows, when it is activated, the Processor 3 indicates that the requested duty cycle is a programming cycle and not an alarm cycle. On the other hand, it is one of the lines 22 'to 27 activated, the processor 3 carries out an alarm cycle and outputs, depending on which of the lines 22 to 27 is activated

030040/0880 COPY ORIGINAL INSPECTED

is to send a corresponding message (e.g.! "yours for the line 22, burglary or theft for line 23, etc.).

The processor calculates the elapsed time with reference to the executed program and the duration of the machine cycle, which is predetermined by the quartz clock generator 16.

At the end of the programming or alarm cycle, the processor 3 itself takes over the task of disconnecting the voltage from the system, by opening the relay 11 by actuating the register 41. In sufficient time before the register is operated 41 the processor cuts through the non-volatile memory 8 Actuation of the register 40 to protect the memory 8 from writing incorrect values. Such a flawed one Writing of data could occur when the voltage is switched off.

The integrator network 15 provides the separation of the memory 18 safe during the bouncing, which may possibly occur on the line 40 when the voltage is switched off.

It goes without saying that, depending on the respective state of the art of integration, all or some of the above-mentioned Device forming components can be integrated on a single chip without thereby affecting the inventive concept is deviated.

The automatic telephone transmitter according to the invention can be used anywhere be deployed where it is desired to call one or more subscribers after a particular condition where the transmitter is located.

030040/0889

The use of the device according to the invention will be beneficial in those applications where it is desirable to use the same Adapting the telephone transmitter to special conditions at different locations to be monitored, or where it is desirable to change the function parameters of already installed transmission devices without having to expend particular effort and expense (In fact, the costs are the respective telephone charges).

030040/0889

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Claims (1)

Patent to s ρ r ü c h e Telephone alarm transmitter with which an alarm condition occurs telephone numbers can be dialed automatically, characterized in that a device (3 »7» 19) is intended for the transmission of messages, which are coded according to the standards of the modulator provided for the connected telephone network, so that the message appears in plain text on a telex of the automatically called subscriber, provided that the subscriber is with a teleprinter and a standard modem ■ is equipped. Transmitter according to Claim 1, characterized net that the modulation function in a monolithic Memory (8) is programmed and executed by a processor (3) will. 030040/0889 TELEPHONE (OSS) 22 28 62 TELEX OB-SO SBO TELERAMS MONAPTH TELECOPER 3 · Transmitter according to claim. 1 and 2, thereby. g e k e η η z e i c h η et that the speed of the message delivered by the sender is both 110 bits per second and 300 bits per second. 4-. Transmitter according to claim 1, characterized by "" - by means (18) for recognizing the frequency the state "space", which is generated by a modulator as an acknowledgment for a sent message. 5 · Transmitter according to claim 4, characterized that the detection of the frequency of the state "space", which is generated by a modulator, by a logical quantity is ensured in a permanent memory. 6. Transmitter according to claim 1, characterized that a monolithic one designed in CMOS technology Read / write memory is provided, which is operated so that the information contained in it is not lost, and that the memory (8) stores the correct functional parameters for each application. · 7. Transmitter according to claim 6, characterized by a device for programming the non-volatile memory (8) via telephone by the one tired at the other end of the Telephone line sent signal is demodulated. 8. Transmitter according to claim 7> dadurc h marked net that the demodulation is ensured by logical quantities which are stored in a permanent memory and are executed by a processor (3). D300A0 / 0889 _m ^ jZ. ^ 9. Transmitter according to claim 1, characterized by dadurc h that it recognizes the different telephone tones, which are used to set the telephone numbers and to establish a telephone connection are necessary, and that the recognition takes place on the basis of logical quantities in a read-only memory (4), which is carried out by a processor (3). G30040 / 08S9