RU2310236C1 - Device for imitation protection of objects being monitored - Google Patents

Abstract

FIELD: intruder and fire alarms, in particular, devices for imitation protection of objects being monitored, possible use for protecting various objects belonging to national economy.

SUBSTANCE: device for imitation protection of objects being monitored consists of transmission block with sensor and signal selection block, translator with information processing block, information receipt block with control block and communication line between transmission block and translator. Sensor comprises: launching sequence memory block, comparison block, generator of second pseudo-random series, block for converting n-bit parallel combination to a serial combination, memory block, block for converting serial combination into n-bit parallel combination, demodulator, modulator, matching device. Information processing block comprises: launching sequence memory block, block for converting n-bit parallel combination to serial combination, modulator, matching device, key generator, generator of first pseudo-random series, control value memory block, generator of second pseudo-random series, first memorizing device, comparison block, second memorizing device, block for converting a serial combination to n-bit parallel combination and demodulator.

EFFECT: increased trustworthiness of monitoring of protected objects, expanded functional capabilities of devices for signaling status of objects being monitored.

1 dwg

Description

FIELD OF THE INVENTION

The invention relates to techniques for fire alarm, in particular to devices for the protection of controlled objects, and can be used to protect controlled objects.

State of the art

A known system for centralized notification of violation of a guarded object, including object devices installed on objects and connected to the subscriber line using signal relay contacts, a switching and broadcast device installed on the cross of an automatic telephone exchange and containing a distribution and control unit, an amplitude unit selections and linear kits connected to subscriber communication lines using the contacts of linear relays, and a receiving device installed in pu nte of protection.

(see USSR author's certificate No. 383091, class G08B 25/02).

This system provides security for facilities with individual telephone sets. The system, after taking the object under protection, monitors the subscriber line connecting the protected object with the device for switching and broadcasting to the open and short circuit. If a violation has occurred at the facility, the signal relay contact included in the subscriber line opens and thereby sends an alarm signal to the switching and broadcasting device, which then arrives at the receiving device.

There is another device for signaling the state of monitored objects, containing communication lines, transmission units installed on the objects, each of which consists of a code lock connected to the input of the control and reception unit, a translator containing a linear unit, an amplifier, a selector, a decoder, the first the output of which is connected to the first input of the linear block, a counter, a notification type memory block, an information transmission permission block and a pulse generator, the output of which is connected to a counter containing a print block, a block indications and electric clocks.

(see USSR author's certificate No. 374646, class G08B 25/02).

The device provides the issuance of security and fire alerts, allows the materially responsible person to automatically arm the object with an electrocode lock and disarm it with an acknowledgment of the performance of these functions both at the object and at the receiving device at the security point.

The closest technical solution to this is a device for signaling the state of monitored objects, consisting of a transmission unit containing a code lock, a control and reception unit, a high-frequency generator, a signal selection unit, communication lines, a translator containing a clock generator, a serial binary counter , a decoder, a memory block of the type of notices, a block for permitting the transmission of information, an amplifier, a pulse duration selector, a comparison block, an analyzer, a buffer block memory, control unit, transceiver, linear units, control unit, information receiving unit containing print unit, electric clock unit, control unit, transceiver, buffer memory unit, random access memory, memory unit, light panel, communication line status display unit with translator

(see USSR author's certificate No. 691906, class G08B 25/02, 1979).

The device provides the issuance of security and fire notices, allows the materially responsible person to automatically arm the object and disarm it with an electrocode lock, acknowledging the performance of these functions both at the object and at the receiving device at the security point, and round-the-clock security of the object telephone connection.

However, these systems do not allow detecting the substitution of the transmission unit when introduced into the communication line between the transmission unit and the translator.

Disclosure of invention

The objective of the invention is to develop a device for the protection of monitored objects, which allows to increase the reliability of monitoring of protected objects and expand the functionality of known devices for signaling the state of controlled objects.

The technical result that can be obtained using the present invention is to increase the reliability of monitoring of protected objects and expand the functionality of known devices for signaling the status of controlled objects.

The technical result is achieved using a device for simulating controlled objects, comprising a signal selection unit included in the transmission unit, a signal selection unit included in the translator, a control unit included in the information receiving unit, a communication line, and a sensor is introduced into the transmission unit comprising a matching device, a modulator, a demodulator, a block for converting a serial combination to n-bit parallel, a memory block, a memory block for the start sequence, a comparison unit, a second pseudorandom sequence generator (PSP-2 generator), an n-bit parallel to serial combination conversion unit, an information processing unit containing a matching device, a modulator, a demodulator, a serial to parallel conversion unit, a start sequence memory block, a key generator is inserted into the translator , a first pseudorandom sequence generator (PSP-1 generator), PSP-2 generator, a control value memory unit, a first storage device, a second storage device, a comparison unit, a parallel-to-serial conversion unit, wherein the output of the starting sequence memory unit included in the sensor is connected to the first input of the comparison unit, the output of the comparison unit is connected to the reset input to the initial state of the memory unit and the reset input to the original the state of the PSP-2 generator, the output of the PSP-2 generator is connected to the input of the parallel combination to serial conversion unit, the output of the parallel combination conversion unit after The output is connected to the input of the modulator, the output of the memory unit is connected to the input of the comparison unit and to the start input of the PSP-2 generator, the output of the modulator is connected to the first input of the matching device, the output of the serial to parallel conversion unit is connected to the input of the memory unit, the output of the demodulator is connected to the input the serial to parallel conversion unit, the first output of the matching device is connected to the input of the demodulator, the second output of the matching device is connected to the first input of the unit As for the selection of signals included in the transmission unit, the first output of the signal selection unit included in the transmission unit is connected via a communication line to the second input of the signal selection unit included in the translator, the second output of the signal selection unit included in the transmission unit is connected to the second input of the matching device, the first output of the starting sequence memory block, which is part of the information processing unit, is connected to the first input of the parallel combination conversion unit in research, the second output of the starting sequence memory block, which is part of the information processing unit, is connected to the input of the key generator, the output of the parallel-to-serial conversion unit is connected to the modulator input, the modulator output is connected to the first input of the matching device, the second output of the matching device is connected to the first the input of the signal selection block, which is part of the translator, the first output of the matching device is connected to the input of the demodulator, the second output of the block is selected signal, which is part of the translator, is connected to the first input of the matching device, the first output of the signal selection block, which is part of the translator, is connected via a communication line to the second input of the signal selection block, which is part of the transmission block, the first output of the key generator is connected to the input PSP-1 generator, the second output of the key generator is connected to the reset input to the initial state of the PSP-1 generator, the reset input to the initial state of the control value memory block, the reset input to the initial state of the gene PSP-2 rotor, to the reset input of the first storage unit, the PSP-1 generator output is connected to the input of the control value memory unit and to the second input of the parallel-to-serial conversion unit, the output of the control value memory unit is connected to the input of the PSP-2 generator , the output of the PSP-2 generator is connected to the input of the first storage device, the output of the first storage device is connected to the second input of the comparison unit, the first output of the comparison unit is connected to the second input of PSP-1 nerator, the second output of the comparison unit is connected to the input of the control unit included in the information receiving unit, the output of the second storage device is connected to the first input of the comparison unit, the output of the serial to parallel conversion unit is connected to the input of the second storage device, the output of the demodulator is connected to the input of the serial to parallel conversion unit, the output of the control unit included in the information receiving unit is connected to the input of the start memory block th sequence.

Brief Description of the Drawings

The drawing shows a block diagram of a device for simulating controlled objects.

The implementation of the invention

The device for simulating protection of controlled objects consists of a sensor 1 containing a memory block 2 of the starting sequence, a comparison block 3, a second pseudorandom sequence generator 4 (PSP-2 generator 4), a block 5 for converting an n-bit parallel combination into a serial one, memory block 6, block 7 converting a serial combination to n-bit parallel, a demodulator 8, a modulator 9, a matching device 10, an information processing unit 11 containing a starting sequence memory unit 12, a conversion unit 13 n-bit parallel combination in serial, modulator 14, matching device 15, key generator 16, first pseudo-random sequence generator 17 (PSP-1 generator 17), control value memory unit 18, second pseudo-random sequence generator 19 (PSP-2 generator 19 ), a block of the first storage device 20, a block of comparison 21, a block of a second storage device 22, a block 23 for converting a serial combination into a parallel one, a demodulator 24, a block for selecting signals 25, which is part of the block At 26, the communication line 27, the signal selection block 28, which is part of the translator 29, the control unit 30, which is part of the information reception unit 31, the output of the starting sequence memory unit 2, which is part of the sensor 1, is connected to the first input of the comparison unit 3, the output of the comparison unit 3 is connected to the reset input to the initial state of the memory unit 6 and the reset input to the initial state of the PSP-2 generator 4, the output of the PSP-2 generator 4 is connected to the input of the parallel combination to serial block 5, the output of block 5 is pre the formation of a parallel combination into a serial one is connected to the input of the modulator 9, the output of the memory unit 6 is connected to the input of the comparison unit 3 and to the start input of the generator 4 ПСП-2, the output of the modulator 9 is connected to the first input of the matching device 10, the output of the block 7 converting the serial combination to parallel connected to the input of the memory block 6, the output of the demodulator 8 is connected to the input of the block 7 converting the serial combination to parallel, the first output of the matching device 10 is connected to the input of the demodulator 8, the second you One matching device 10 is connected to the first input of the signal selection unit 25, which is part of the transmission unit 26, the first output of the signal selection unit 25, which is part of the transmission unit 26 is connected via a communication line 27 to the second input of the signal selection unit 28, which is part of the translator 29, the second output of the signal selection unit 25, which is part of the transmission unit 26, is connected to the second input of the matching device 10, the first output of the starting sequence memory unit 12, which is part of the information processing unit 11, connected to the first input of the parallel combination to serial conversion unit 13, the second output of the starting sequence memory unit 12 included in the information processing unit 11 is connected to the input of the key generator 16, the output of the parallel to serial combination conversion unit 13 is connected to the input of the modulator 14, the output the modulator 14 is connected to the first input of the matching device 15, the second output of the matching device 15 is connected to the first input of the signal selection block 28, which is part of the translator 2 9, the first output of the matching device 15 is connected to the input of the demodulator 24, the second output of the signal selection block 28, which is part of the translator 29, is connected to the first input of the matching device 15, the first output of the signal selection block 28, which is part of the translator 29, is connected through the line communication 27 to the second input of the signal selection unit 25, which is part of the transmission unit 26, the first output of the key generator 16 is connected to the start input of the generator 17 PSP-1, the second output of the key generator 16 is connected to the reset input the generator 17 PSP-1, the reset input to the initial state of the memory block 18 of the control value, the reset input to the initial state of the generator 19 PSP-2, the reset input to the initial state of the block of the first storage device 20, the output of the generator 17 PSP-1 is connected to the input of the memory block 18 of the control value and to the second input of the block 13 converting the parallel combination into serial, the output of the memory block 18 of the control value is connected to the start input of the generator 19 PSP-2, the output of the generator 19 PSP-2 is connected to the input of the first storage device 20, the output of the first storage device 20 is connected to the second input of the comparison unit 21, the first output of the comparison unit 21 is connected to the second input of the generator 17 ПСП-1, the second output of the comparison unit 21 is connected to the input of the control unit 30, which is part of the information reception unit 31 , the output of the second memory device 22 is connected to the first input of the comparison unit 21, the output of the serial combination to parallel conversion unit 23 is connected to the input of the second memory device 22, the output of the demodulator 24 is connected to the input of the block Single 23 serial conversion in a parallel combination, the output control unit 30 constituting the information receiving unit 31, 12 is connected to the input of the starting sequence of the storage unit.

The device imitating controlled objects works as follows.

When a start signal is supplied from the control unit 30, which is part of the information reception unit 31, to the input of the start sequence memory unit 12, the command to restore the information processing unit 11 to its initial state is received from the second output of the start sequence memory unit 12, for this, via the key generator 16 to the reset inputs to the initial state of the generator 17 PSP-1, the memory block 18 of the control value, the generator 19 PSP-2, the block of the first storage device 20 is issued the command "reset", simultaneously from the first output of the block pa Mint 12 of the starting sequence, the binary starting sequence stored in the block is supplied to the first input of the block 13 converting a parallel combination into a serial one. When passing the start sequence through the block 13 converting a parallel combination into a serial, modulator 14, matching device 15, the block of signal selection 28, which is part of the translator 29, communication line 27, block signal selection 25, which is part of the transmission unit 28, matching device 10 , demodulator 8, block 7 converting the serial combination into a parallel starting sequence is recorded in the memory block 6. From the memory block 6, the starting sequence is sent to the comparison block 3, where is connected with the sequence stored in the memory block 2 of the starting sequence (memory blocks of the starting sequence 2, 12 contain the same starting sequence) and, if the sequences coincide, the comparison block 3 generates a signal to set the memory block 6 and generator 4 to the initial state PSP-2, thereby preparing the generator 4 PSP-2 to receive the parcel from the generator 17 PSP-1. At the same time, the starting sequence received from the memory block 12 of the starting sequence starts the key generator 16, which generates a combination of starting the generator 17 PSP-1. Formed in the generator 17 PSP-1, the first value of the binary first pseudo-random sequence (PSP-1) is stored in the memory block 18 of the control value. The first PSP-1 value stored in the memory block 18 of the control value starts the PSP-2 generator 19 (the generation functions of the second pseudo-random sequence of generators 4, 19 PSP-2 are identical) the first value of the second pseudo-random sequence (PSP-2) generated by the PSP-2 generator 19 stored in the block of the first storage device 20. At the same time, the first value of PSP-1 formed in the generator 17 ПСП-1 is supplied to the second input of the block 13 converting the parallel combination into serial and through the modulator 14, the caretaker device 15, the signal selection unit 28, which is part of the translator 29, the communication line 27, the signal selection unit 25, which is part of the transmission unit 26, the matching device 10, the demodulator 8 is fed to the input of the serial combination to parallel conversion unit 7. From the output of the block 7 converting the serial combination to parallel, the first value of PSP-1 is fed to the input of the memory block 6, where it is stored. The first value of PSP-1 stored in the memory unit 6 is compared in the comparison unit 3 with the sequence permanently stored in the memory unit 2. In the case of sequence mismatch, the command to set the sensor 1 to its initial state is not generated, and the first PSP-1 value stored in the memory unit 6 gives the command to the PSP-2 generator 4 to generate a pseudo-random sequence. Formed in the generator 4 PSP-2, the first value of PSP-2 is fed to the input of the block 5 for converting a parallel combination into a serial one and through a modulator 9, a matching device 10, a block for selecting signals 25, which is a part of a block for transmitting 26, a communication line 27, a block for selecting signals 28, which is part of the translator 29, the matching device 15, the demodulator 24 is fed to the input of the serial combination to parallel conversion unit 23, converted in the serial combination to parallel conversion unit 23 Achen CAP-2 is written in the second memory unit 22.

Thus, in the block of the first storage device 20, the first PSP-2 value generated by the PSP-2 generator 19, which is a part of the information processing unit 11, is stored, and in the second memory block 22, the first PSP-2 value generated by the PSP- generator 4 is stored 2, which is part of the sensor 1. Based on the fact that for the generation of pseudo-random sequences by the PSP-2 generators 4, 19, the same function of the pseudo-random sequence generation used by the PSP-1 generator 17 is used, the values located in the block x 20 and 22, should be the same (in the absence of unauthorized replacement of the transmission unit or damage to the communication line). To check the immunity of the communication line 27 and the transmission unit 28, the values stored in the blocks 20, 22 are compared in the comparison unit 21. If the values coincide, the comparison unit 21 generates a “normal” command, which starts the generator 17 ПСП-1 to generate the next value of ПСП- one. In the event of a discrepancy between the values (violation of the imitation protection mode), the comparison unit 21 issues an alarm signal to the input of the control unit 30, which is part of the information reception unit 31.

The invention in comparison with the prototype and other known technical solutions has the following advantages:

- increasing the reliability of control over protected objects;

- expanding the functionality of known devices for signaling the state of controlled objects.

Claims (1)

A device for imitating controlled objects, comprising a signal selection unit included in the transmission unit, a signal selection unit included in the translator, a control unit included in the information receiving unit, a communication line, characterized in that a sensor comprising matching device, modulator, demodulator, serial-to-n-parallel conversion unit, memory unit, start sequence memory unit, comparison unit, second pseudorandom generator sequence (PSP-2 generator), a block for converting an n-bit parallel to serial combination, an information processing unit containing a matching device, modulator, demodulator, block for converting a serial combination to n-bit parallel, a starting sequence memory block, a generator is inserted into the translator key, the first pseudorandom sequence generator (PSP-1 generator), PSP-2 generator, control value memory unit, the first storage device, the second storage a device, a comparison unit, a unit for converting an n-bit parallel combination into a serial one, wherein the output of the starting sequence memory block included in the sensor is connected to the first input of the comparison unit, the output of the comparison unit is connected to the reset input to the initial state of the memory unit and the reset input to the initial state of the PSP-2 generator, the output of the PSP-2 generator is connected to the input of the n-bit parallel to serial conversion unit, the output of the n-bit parallel comb conversion unit nation in serial is connected to the input of the modulator, the output of the memory unit is connected to the second input of the comparison unit and to the start input of the PSP-2 generator, the output of the modulator is connected to the first input of the matching device, the output of the serial-to-n-parallel conversion unit is connected to the input of the memory unit , the output of the demodulator is connected to the input of the conversion unit of the serial combination into n-bit parallel, the first output of the matching device is connected to the input of the demodulator, the second output I agree The current device is connected to the first input of the signal selection unit, which is part of the transmission unit, the first output of the signal selection unit, which is part of the transmission unit, is connected, via a communication line, to the second input of the signal selection unit, which is part of the translator, the second output of the signal selection unit of the transmission block is connected to the second input of the matching device, the first output of the starting sequence memory block, which is part of the information processing block, is connected to the first input of the block converting an n-bit parallel combination to serial, the second output of the starting sequence memory block included in the information processing unit is connected to the input of the key generator, the output of the n-bit parallel combination to serial conversion unit is connected to the modulator input, the modulator output is connected to the first input matching device, the second output of the matching device is connected to the first input of the signal selection unit, which is part of the translator, the first output of the matching the device is connected to the input of the demodulator, the second output of the signal selection block, which is part of the translator, is connected to the second input of the matching device, the first output of the signal selection block, which is part of the translator, is connected, via communication lines, to the second input of the signal selection block, included in the composition of the transmission block, the first output of the key generator is connected to the first input of the PSP-1 generator start, the second output of the key generator is connected to the reset input to the initial state of the PSP-1 generator, the reset input to the initial the state of the control value memory block, the reset input to the initial state of the PSP-2 generator, the reset input to the initial state of the first storage unit, the output of the PSP-1 generator is connected to the input of the control value memory block and to the second input of the n-bit parallel combination conversion unit in serial, the output of the memory block of the control value is connected to the start input of the PSP-2 generator, the output of the PSP-2 generator is connected to the input of the first storage device, the output of the first storage device VA is connected to the second input of the comparison unit, the first output of the comparison unit is connected to the second input of the PSP-1 generator start, the second output of the comparison unit is connected to the input of the control unit included in the information receiving unit, the output of the second storage device is connected to the first input of the comparison unit, the output of the conversion unit of the serial combination to n-bit parallel is connected to the input of the second storage device, the output of the demodulator is connected to the input of the conversion unit of the serial combination and a n-bit parallel, the output control unit included in the information receiving unit connected to the input of the storage unit start sequence.