RU1794278C - System for object remote testing due to telephone set - Google Patents

Description

line relay 21. call parcel converter 22, call parcel counter 23, holding key 24, amplifier 25, linear transformer 26, reset unit 27, inverter 28, memory unit 29 with a memory unit 31 and a reset key 30 included in it, delay unit . 32, pulse switch 33, shaper of information packages 3.4, counting unit

35, transmission key 36, transmission amplifier 37, amplitude limiter 38, matching unit 39, continuous tone generator 40, bump key 41, Information about the state of the object is obtained from the answering machine to the receiver of the nature of the malfunction after a request from the telephone set.

The invention relates to automatic telephone communications and can be used for remote monitoring over the telephone network from a telephone set of various unattended objects, for example unattended city and rural telephone exchanges and substations, unattended radio nodes, transformer substations of the power supply network, automated objects of communal and agricultural enterprises and etc.

A known system comprising transmitting and receiving distributors with command sensors, command receivers and cells for starting a three-phase network, and accessories, a starting cell, a cell for coupling to the frequency of a three-phase network, cells issuing an enable signal and realizing a command as well acknowledgment signal receiver.

A disadvantage of the known system is that it is possible to carry out monitoring only at one object from one stationary check point, and a three-phase 50 Hz power supply network is required.

An oversized system for remotely checking an object via a telephone network is selected as a prototype, which contains a telephone device connected to a telephone network via subscriber lines (Uat with a fault detector connected to it and an answering machine installed on the object under test, consisting of a linear transformer with primary and secondary windings, amplitude limiter and matching unit, the outputs of which are connected respectively to the inputs of the primary and secondary windings of a linear transformer pa, a jack key, the first block of AND elements, an inverter, a delay element, a series of ringing bell transformers, a ringing bell counter, a holding key, a line relay amplifier with contacts, one of which is connected to the first wire of the subscriber line, and the second contact is linear the relay is connected to the first output of the matching unit, the second output of which is connected to the second wire of the subscriber line and to the first input of the call parcel converter, as well as from the master oscillator a break tone, a transmission amplifier, the output of which is connected to the input of the amplitude limiter, the output of the jack key being connected to the control input of the call parcel counter, and the first input of the jack key to the output of the first block of AND elements, the first input of which is connected to the signal output through an inverter holding key, while the output of the first block of AND elements is also connected to the first input of the continuous tone generator, and the second input of the jack key is connected to the first output of the element delays.

At the same time, the known system does not provide high accuracy of verification since information about the state of the object is obtained upon the establishment of a connection with an answering machine on the object. So, if, when a request is sent to the object, they receive a response in the form of a solid tone signal, the object is considered Kaj serviceable, if they do not receive a response, the object is regarded as faulty. This is extremely insufficient, because in this position, it is impossible to prevent the object from stopping in a timely manner. While the object is still functioning, there may be various malfunctions that significantly degrade the quality of work, or can lead to a complete stop of the object if measures are not taken to eliminate them in a timely manner. Such malfunctions must be detected in advance. However, the known system does not allow this to be done without leaving the facility, which leads to an emergency stop of the facility and prolonged downtime.

The purpose of the invention is to increase the accuracy of verification.

This goal is achieved by the fact that the sensor block, the block of OR elements, the second block of AND elements, the memory block, the counting block, the resetting block, the And element, the pulse key, the shaper of information packages, the shaper of signal frequencies, the transmission key / are inserted into the answering machine the first input of which is connected to the output of the continuous tone signal former, and the second input of the transmission key is connected to the output of the information packet former, the first input of which is connected to the first output of the signal frequency former, the second output which is connected to the second input of the continuous tone tone generator and to the first input of the pulse key, the output of which is connected to the second input of the information parcel driver and the first input of the counting unit, the second input of which is connected to the second output of the delay element, the input of which is connected to the first the output of the second block of AND elements, the first, second and third inputs of which are connected respectively to the first. output of the block of OR elements, the output of the counting unit and the output of the reset unit, combined with the first input of the memory block, the second input of which is connected to the second output of the second block of AND elements, and the output of the memory block is connected to the first input of the block of OR elements, the second input of which is connected to the output of the sensor block, and the second and third outputs are connected respectively to the second input - the house of the first block of elements And and with the first input of the element And, and the second and third inputs of the element And are connected respectively to the output of the inverter and the first output of the delay element, while the input of the resetting unit is connected to the signal output holding of the key, and the output of the element And is connected to the second input of the pulse key / while the input of the signal frequency driver is connected to the output of the master oscillator, and the output of the transmission key is connected to the input of the transmission amplifier, while a third contact is connected to the linear relay connected to the second Call Transmitter Input.

Fig. 1 is a structural diagram of a remote verification facility over a telephone network; in FIG. 2 is a structural diagram of an answering machine.

A system for remotely checking an object over a telephone network (Fig. 1) comprises a telephone network .1. consisting of existing subscriber and long-distance communication lines, urban and rural telephone exchanges and automatic telephone exchanges through which communication is carried out

subscribers, a telephone set 2 connected to a subscriber line (AL), with a fault character receiver 5 connected to it, a monitored facility 3, an answering machine4 installed on a monitored facility (KO) 3 and connected to the AL; KOZ ..,

The answering machine 4 (Fig. 2) contains a block of sensors 6, by means of which it is connected with an object, a block of OR elements 7, consisting of N logical elements OR 8, a logical element N OR 9 and a signal key 10, a second block 11 of AND elements, consisting of N logic elements And 12 and element OR 13, element And 14, first block 15 of elements And, the master oscillator 16, the shaper of signal frequencies 17, consisting of serially connected shaper 18 frequency 2000 Hz and shaper 19 frequency 1000 Hz, contacts 20 line relay 21, 22 call station converter lock, call counter 23, holding key 24, line relay amplifier 25 with contacts, linear transformer With primary and secondary windings 26, reset unit 27, inverter 28, memory unit 29, consisting of block N of triggers 31 and reset key 30 , delay element 32, pulse switch 33, driver. 34. information parcels, counter block 35, transmission key 36, transmission amplifier 37, amplitude limiter 3, matching block 39. continuous tone generator 40, jack key 41.

Answering machine (figure 2) works as follows.

Through the sensor unit 6, by means of which the answering machine 4 is connected to the monitored object 3, fault signals are received from the object to the OR block of elements 7 via N wires through N sensors. The signal of each type of malfunction comes only through its own wire and through its own sensor, corresponding to the assigned type of malfunction of the assigned serial number. The signals from the object 3 can come one at a time, all at the same time or all at different times. The sensors are transistor optocouplers, which are triggered by a faulty TO 3 unit and give potential signals in the form of zero levels, which are held until the failure of the TO 3 node is eliminated. In the OR block 7, a signal indicating the presence of a failure on TO 3 is selected. logic inputs OR 8 from the sensors to the second inputs on N wires collect signals from all sensors and transmit them for fixing to the first inputs of the second

block of elements AND 11 and to the input of logic element N OR 9, and the first inputs of logic elements OR 8 in the information transfer mode block sequentially transmitted fault signals, starting from the lowest number to enable transmission of subsequent faults with a large number. The 9 N OR logic element generates a signal about the presence of at least one malfunction, which is then fed to the input of the signal key 10. The signal key 10 of the OR block 7 contains information about the fact of the presence of at least one malfunction, or the absence of malfunctions on the CO 3 ..

In the presence of malfunctions on KO 3 from the third output of the block of elements OR 7 to the first input of the element. And 14, an enable signal is received, and an inhibit signal from the second output to the second input of the first block 15 of elements AND.

When a telephone set 2 is requested by CO 3 about its state in the answering machine 4 from the subscriber line, the call parcels are sent to the call parcel converter 22 through the contacts 20 of the line relay 21, where they are rectified, reduced from 90-100 to 9V and then 6 in the form of logical signals, they are sent to the call parcel counter 23, Having counted the set number of call parcels, the latter gives a unit-level signal to the input of the holding key 24, which will also work and through the amplifier 25 will turn on the linear relay 21, which with its contacts 2 0 will switch the subscriber line from the input of the call parcel converter 22 to the output of the linear transformer 26 and thereby close the loop of the subscriber line. The activated holding key 24 will also signal the inputs of the reset unit 27 and inverter 28. The reset unit 27, made in the form of a single-shot, will give an impulse for zeroing the memory unit 29 through the reset key 30, and also to start the delay element 32 through the OR element 13. The delay element 32 is completed by the process of establishing a connection with the CO 3. Element 32 Derzhko is a monostable multivibrator. It will give a pulse with a duration of 5-6 s, which acts as a ban on the operation of the I14 element and on the operation of the jack key 41. The signal from the holding key 24 through the inverter 28 gives permission to operate the I14 element and the first block of And 15 elements, but the And 14 element cannot work for 5-6 s, because on the third input it receives a signal

the ban from the delay element 32, and the first block of AND elements 15 cannot work in this case, because on the object there are malfunctions and on its second input from the second

the output of the block of elements OR 7 receives a ban signal. Thus, a pause of 5-6 seconds is formed after the connection is established, which is information about the presence of malfunctions on the object 3. Element I 14 controls the operation of the impulse key 33 and gives a signal to activate the latter if there are three conditions at the same time: a fault request has been received on the object; there is at least one at the facility

5 malfunction; a pause of 5-6 s has ended, appearing at the beginning of the transmission of information and at the end of each information packet. .; ,.; ..- ..:. ..-

After 5-6 seconds, the element 32 delay 0 xy will return to its original state and three

, the inputs of the element And 14 signals coincide in

the form of unit levels, he. will work and

will give permission to work pulsed

a key 33 for transmitting information messages about faults at the facility 3.

The master oscillator 16, made on the form of a symmetric multivibrator on

thermostable elements, operates at a frequency of 4000 Hz, which enters the signal frequency driver 17 into two triggers 18 and 19 connected in series, at which the frequency of the master oscillator is divided up to 2000 and 1000 Hz, respectively. A frequency of 2000 Hz is used5 for the operation of the driver 34 information packages, and a frequency of 1000 Hz for the operation of the pulse switch 33 and the driver of the continuous total signal 40. From the output of the element And 14 to the second input

6 pulse key 33 receives a logical signal that allows it to work. The pulse switch 33 is made in the form of a counter, at which the frequency of 10000 Hz is divided by 64, as a result of which pulses with a frequency of 15.6 Hz are received from its output simultaneously to the second input of the information package generator 34 and to the first input of the counting unit 35. Counting block 35 is built on sequentially connected decimal counters with decoders and has N outputs connected to the second inputs of logic elements And 12, which are part of the second block of elements. Comrade I 11,

5 As mentioned earlier, at the first inputs of AND gate 12, fault numbers are recorded at object 3 in the form of potential signals of a single level. From the pulses from the output of the pulse key 33, a counting unit 35 is operated, as a result of which outputs, starting from the first, are pulses of a single level sequentially output to the second inputs of the logical elements And 12. The counting block 35 works until the first coincidence of the signals on one of the logical elements And T2 of the second block of elements And 11, on which the lowest fault number is fixed. From a signal that appears on any output of AND elements 12 through OR element 13, a delay element 32 is triggered for 5-6 s, which from the first output gives a ban signal to AND element 14, and from the second output - a reset signal to the counting unit 35. The element And 14, in turn, stops the operation of the pulse switch 33, which issued a series of pulses, the number of which is equal to the lowest number of fixed faults at the first inputs of the logical elements And 12. If, for example, object 3 has four faults with assigned numbers two three four e, seven, pulse switch 33 will initially issue a series of two pulses,

The signals from the outputs of the logical elements And 12 are also received in the block 31 of the triggers of the memory unit 29. In the above example, from the output of the second logical element And 12, the signal will go to the input of the second trigger of the block 31 of the triggers, which will give a blocking signal to the first input of the second element OR 8 of the block of elements OR 7. As a result, the signal of the transmitted first fault is blocked at number two, and thus it is possible to transmit information about the next fault with a large number, in our example, three.

After 5-6 seconds, the delay element 32 will return to its original state and remove the ban from the element And 14, which will again turn on the pulse switch 33, and again from the pulses coming from its output, the counting unit 35 will work, which again, running from the first, runs around sequentially logical elements I12 of the subsequent coincidence of signals on one of them. On the second logical element And 12, a malfunction number two is now not fixed, because previously it was blocked in the second logical element OR 8, and the signals will not match on this AND element, but will coincide on the third AND 8 element after the third pulse is issued by the pulse key 33.

Again, as in the first case, the delay element 32 for 5-6 s will give a prohibition signal to the element And 14, reset the counting block 35 to zero, the element And 14 will turn off the pulse

key 33 after issuing a series of three pulses to it, the third trigger in the memory unit 29 will fire, which will block the signal of the transmitted next malfunction at number three, and thereby it will be possible to transmit the next malfunction with a large number.

After another pause of 5-6 seconds, the process will be repeated, and from the output of the pulse key 33, information about the third malfunction at number four (series of four pulses) will be issued.

Finally, after the next pause, the pulse key 33 will give information about the fourth, last, malfunction present at the facility under no. Er seven (series of seven pulses).

Apart from the counting unit 35, the pulse train key output includes, in addition to the counting unit 35, information packages 34 with a frequency of 15.6 Hz, where they are converted into information packages by filling in serial pulses with a frequency of 2000 Hz supplied to the first input from the signal frequency former 17.

Information links then go to the second input of the transmission key 36 and then: through the transmission amplifier 37, the amplitude limiter 38, the linear transformer 26, the matching device 39 and the contacts 20 of the linear relay 21 to the subscriber line.

After the transmission of information about all the faults present at the object 3 in the block 31 of triggers of the memory unit 29, those triggers whose numbers coincide with the numbers of the faults present at the object will remain in operation. As a result, in the block of OR elements 7, the signals of the transmitted faults become blocked and the polarity of the potential signals changes at its outputs. From its third output to the first input of AND element 14, a ban signal will now be received, and from the second output to the second input of the first block of AND elements 45, an enable signal. Now the first block of AND 15 elements will work, because on both its inputs, the enable signals coincide (at the first input, the enable signal is held from the moment the connection was established). From the output of the first block of elements And 15, the signal will go to the first input of the jack key 41 and to the second input of the continuous tone generator 40, but the jack key 41 is not will work because a delay element 32 is still in operation, and a prohibition signal is held at the second input of the fender key 41. Shaper 40 continuous tone will work and will issue on the first input of the key 36 transmission

continuous tone signal with a frequency of 1000 Hz, which then, as in the transmission of information packets, will go to the subscriber line and will last 5-6 seconds until the delay element 32 is set to its initial position. .;

After 5-6 seconds, the delay element 32 will return to its original state / remove the ban from the second input of the jack key 41, which will operate and reset to zero 1 counter 23 call packages, which, in turn, will release the holding key 24 and the linear relay 21. The line relay 21 will release and switch its contacts 20, which will cause the loopback of the subscriber line and the telephone network 1 to hang up, and the subscriber line will switch to the ringing transformer 22. After that, answering machine 4 will be ready for the next request.

In the absence of malfunctions, at CO 3 from the third output of the block of OR elements 7, a prohibition signal will be sent to the first input of the And 14 element, and: from the second output to the second input of the first block of And 25 elements - the enable signal. Upon receipt of a request from the telephone set 2 to the CO 3 about its state, the connection is established, as in the case of malfunctions at the CO 30 and ends with the operation of the delay element 32. At the entrances of the first block; elements And 15 in this case, the enable signals will coincide, it will work and give a signal to turn on the continuous tone generator 40, which through the first input of the transmission key 36 and the previously described blocks 37.38,26,39 will issue a continuous tone signal to the subscriber line with a frequency 1000 Hz for 5-6 s, which is information about the health of KO 3. At the same time, from the output of the first block of elements And 15, the signal also goes to the first input of the jack key 41, however, it will work only after 5-6 s, when delay element 32 returns to ref one position and the transfer to the subscriber line of information about the health of KO 3 will be completed. Having worked, the jack key 41 sets to the initial position all -: - -V ::; . , ..

Formula A system for remotely checking an object over a telephone network, comprising a telephone 6 connected to the telephone network via subscriber lines with a connected receiver of the nature of the malfunction and an answering machine 4 installed, and the subscriber line is hung up, the answering machine will be ready for the next request.

So, having made a request to QO 3 about the faults there over the telephone network 1, from the telephone set 2 by dialing the subscriber number Qo 3 after establishing a connection with the answering machine 4 receive information about the state of the object. If there are no malfunctions at the facility, from the answering machine 4 over the telephone network 1, the telephone 2 receives information about the health of the KO 3 in the form of a continuous tone for 5-6 s. If there are malfunctions on KO 3, then after submitting a request and establishing a connection with the answering machine 4, information is first received on the fact of the presence of malfunctions on KO 3 in the form of a pause of 5-6 s, and then information on the existing malfunctions on KO 3 is in the form of information packages consisting of a series of frequency pulses. In the telephone set 2, this information is tapped, and in the receiver 5 the nature of the faults is decrypted and displayed digitally, after which the answering machine disconnects and sets itself to its original position.

Thus, the accuracy of checking the CO 3 is improved by obtaining complete information about the faults present therein. Experimental tests on the telephone network showed that the system for remotely checking an object on the telephone network is characterized by great efficiency, flexibility, simplicity, and ease of use. This is especially beneficial when the facilities are far removed and dispersed for traveling operating personnel, who can carry out inspections of their facilities and receive information in advance independently without an operation manager. At the same time, the operation manager can control the course of troubleshooting at the facilities from his telephone, independently of other persons.

an answering machine tested at the object under test, consisting of a linear transformer with primary and secondary windings, an amplitude limiter and a matching unit, the outputs of which are connected respectively to the inputs of the primary and secondary windings of the linear transformer, jack key, first block of AND elements, inverter, delay element. a series-connected call parcel converter, a call parcel counter, a holding key, a line relay amplifier with contacts, one of which is connected to the first wire of the subscriber line, and the other to the first output of the matching unit, the second output of which is connected to the second wire of the subscriber line and to the first input of the call parcel converter, as well as from the master oscillator, the continuous tone generator, the transmission amplifier, the output of which is connected to xo; there is an amplitude limiter, and the output of the jack key is connected to the control input of the call parcel counter, and the first input of the jack key is connected to the output of the first block of AND elements, the first input of which through the inverter is connected to the signal output of the holding key, while the output of the first block of AND elements is connected also to the first input of the continuous tone generator, and the second input of the jack key is connected to the first output of the delay element, characterized in that, in order to increase the accuracy of the check, the sensor block, the block of OR elements, the second block of AND elements, the memory block, the counting block, the reset block, the AND element, the pulse switch, the information packet generator, the signal frequency generator, the transmission key, the first input of which is connected to the output of the continuous tone generator, are introduced signal, and the second input of the transmission key with the output of the information driver

parcels, the first input of which is connected to the first output of the signal frequency driver, the second output of which is connected to the second input of the continuous tone generator and the first input of the pulse key, the output of which is connected to the second input of the information package generator and to the first input of the counting unit, the second input which is connected to the second output of the delay element, the input of which is connected to the first output of the second block of AND elements, the first, second and third inputs of which are connected respectively to the first the output of the block of OR elements, the output of the counting block and the output of the reset unit combined with the first input of the memory block, the second input of which is connected to the second output of the second block of AND elements, and the output of the memory block is connected to the first input of the OR block, the second input of which connected to the output of the sensor unit, and the second and third outputs are connected respectively to the second input of the first block of elements And and the first input of the element And, and the second and third inputs of the element And are connected respectively to the output of the inverter and the first you ode to the delay element, while the input of the resetting unit is connected to the signal output of the holding key, and the output of the element And is connected to the second input of the pulse key, while the input of the signal frequency driver is connected to the output of the master oscillator, and the output of the transmission key is connected to the input of the transmission amplifier, In this case, a third contact is connected to the linear relay connected to the second input of the call parcel converter.