SU1668704A1 - Multichannel device for remote indication of emergency condition of equipment - Google Patents

Abstract

The invention relates to information devices for polling and data transmission in communication collectors, mining, coal and gas industry. The goal is to simplify the device by reducing the number of information communication lines (ILS), as well as improving reliability. The device consists of a control panel with a generator of 1 clock frequency, connected by a ILS 17-19 communication with a receiving-transmitting device (PPU) 16, and a sound alarm unit 15. Moreover, the control panel is equipped with a block 2 for forming counting pulses, a block 3 for interrogation pulses, a block 5 for a gating pulse, and blocks 10 for indicating the number of polyurethane foam. The request pulses are controlled by the indicator 4, and the request and gating pulses are controlled by the indicators 8 and 9. Each block 10 contains series-connected filters 11, a matching block 12, a memory node 13 and a mnemonic circuit 14. Each of the PUF 16 consists of two receiving filters 20 and 21, connected via matching blocks 22, 23 to coincidence element 24, which is connected via counter 25 to decoder 26. The latter interrogates the state of executive relays 27 of information sensors (ID) of the process equipment. The pulses of the state of the ID through the amplifier 28 are returned through the ILS 19 communication to the control panel. The control panel allows you to control any number of IDs up to 150 objects. In the event of an emergency at any facility in any local control room, an alarm light and sound alarm appears. 1 hp f-ly, 3 ill.

Description

1

filters 20 and 21. connected via matching blocks 22, 23 to coincidence element 24, which is connected via counter 25 to decoder 26. The latter interrogates the state of the executive relay 27 of information sensors (ID) of the process equipment. Pulses of state ID through amplifier 28

return through the IL-19 communication to the control panel. The control panel allows you to control any number of IDs up to 150 objects. In the event of an emergency at any facility in any local control room, an alarm light and sound alarm appears. 1 hp ff, 3 ill.

The invention relates to information devices for interrogating and transmitting data in communication collectors, in the mining, coal and gas industry, for example, in mines, i.e. in any underground structures with a complex profile, a large extent, as well as with a considerable distance of information objects from one another, in which it is required to exercise control over technological equipment.

The aim of the invention is to simplify the device by reducing the number of information lines, as well as improving reliability.

Figure 1 shows the structural scheme of a multichannel device for the remote signaling of the emergency condition of the process equipment; Fig. 2 illustrates an exemplary embodiment of the memory node; Fig. 3 shows diagrams for the operation of the device.

The multichannel device for remote signaling of emergency process equipment is intended for displaying on the LEDs of the mimic circuit the request part of the control panel of information sensors of the process equipment located in the commutation collectors and receiving and transmitting devices. Such transceivers can be N. The control panel allows you to control any number of information sensors, however, the optimal number of monitored sensors is up to 150 objects of security alarm, gas protection, fans, pumps and other technological equipment located in communication manifolds. The peculiarity of this device is that the communication between the control panel and any transceiver is carried out via a four-wire data line. In the event of an emergency at any facility in any local control room, an alarm light and sound alarm appears.

The device (Fig. 1) consists of a control panel, which includes a clock pulse generator 1, electrically connected with a counting pulse shaping unit 2 and a query pulse shaping unit 3. The request pulses are controlled by the indicator 4. The output of the unit 3 is connected to the unit 5 of the formation of gating pulses and the input of the amplifier 6 pulses

requests that go to the information line connecting the request part of the control panel with each transceiver. Strobe pulses are fed to the amplifier 7 and also,

as request pulses, into the information line.

Indicators 8 and 9 control the request and gating pulses. The control panel also includes display units 10,

the number of which is determined by the number of receiving and transmitting devices located in the collectors. Each display unit contains a filter 11, which through a matching element 12 is connected to the node 13

a memory, which is connected to the outputs of the gating pulse generation units 5 and the request pulses 3, the output of the memory node 13 is connected to the mnemonic circuit 14. In addition, the output of each node

the memory is connected to the sound alarm unit 15. Each receiving and transmitting unit 16 is connected to the control panel of information lines 17, 18 and 19 of communication and consists of filters 20 and 21,

each of which is connected to the coincidence element 24 through the corresponding matching unit 22 and 23, which is connected via the counter 25 to the decoder 26. The decoder 26 interrogates the state of the executive relays 27 of the information sensors. The pulses of the state of the information sensors through the amplifier 28 are returned via the link 19 to the control panel.

The device works as follows.

The clock pulse generator 1 generates a sequence of rectangular pulses (Fig. 3.1), which are received by the counting pulse generation unit 2 and the query pulse shaping unit 3, the output of which forms a burst of 150 pulses in a burst (FIG. 3). that corresponds to 150 information sensors. Unit 3 selects from the pulse train of the generator 1 the number of pulses corresponding to the number of controlled objects by setting the time interval.

The operation of the request pulse shaping unit 3 is controlled by indicator A. Of the request pulses, the building up pulses are generated in unit 5 (FIG. 3.5) by extracting a pulse with a duration of a predetermined time interval. Next, the request and gating pulses arrive at the corresponding amplifiers 6 and 7, the amplified pulses through the communication lines 17 and 18 arrive at the corresponding receiving-transmitting device, the filters 20 and 21 filter the signals from the interference of the communication lines and through the corresponding matching units 22 and 23 these signals are applied to a coincidence element 24 (Fig. 3.24). After the match element 24, a burst of pulses arrives at a counter 25 in which a code is generated. According to this code, the state of the executive relays of the 27 information sensors is sequentially polled.

The outputs of the decoder 26 are connected to the executive contacts of the status sensors of the process equipment. Under the action of the counter code 25, alternate (serial) connection of the outputs of the decoder 26 to the contacts of block 27 occurs. If the equipment is malfunctioning, the corresponding contacts of the sensor relay are closed and potential O appears at the input of amplifier 28. In case of normal operation of the technological equipment, the potential of the amplifier is 28 - 1. Thus, a sequence of response pulses is formed, carrying information about the state of the process equipment.

The pulses corresponding to the state of the executive relays 27, (FIG. 3.28) through the amplifier 28 and the communication line 19 arrive at the display unit 10, where through

successively connected filter and matching unit pulses arrive at the storage unit 13, in which the response pulses are recorded and, upon receipt of counting testing pulses, the recorded information arrives in the event of a malfunction of the process equipment on the mnemonic scheme 14 and the audible signaling unit 15.

0The survey of all transceivers is carried out in parallel.

Figure 2 illustrates in more detail the generation of the information signal for flashing on a mimic.

5 The gating pulses from block 5 arrive at the element AND 29 and 30, as well as the inverter 31. At the same time, the element 29 receives a sequence of response pulses from block 12, which pass to

0 inputs of 32 memory elements (triggers). The number of memory elements 32 corresponds to the number of sensors of the process equipment. Each response pulse is memorized. At the same time

 The 5 input element AND 30 arrives the counting pulses from the block 2 forming the counting pulses. Under the influence of these pulses sequential recording of the response pulses from the output of the element I 29 in

0 each bit of memory elements 32. Thus, recording occurs in memory unit 13. At the end of the gating pulse, the output of the information from

5 memory elements 32 through the element And 33 for the results of the mnemonic scheme 14, where the luminescence of the corresponding diode signals the emergency state of the process equipment.

0 An example of the technical implementation of the storage unit 13 can be the shift registers, which play the role of recording, storing and displaying information.

Claims (2)

Invention Formula 51. A multichannel device for remotely signaling an emergency condition of the process equipment, comprising a control panel with a clock frequency generator, connected by information lines 0 to receiving and transmitting devices, and an audible alarm unit., Characterized in that, in order to simplify the device the number of information lines, the remote control / le, is equipped with blocks for the formation of counting pulses, pulses of a request and a strobe pulse, as well as indication blocks for the number of transmit-receive signals triplets, each of which contains successively connected filters, a matching unit, a memory unit and a mimic diagram, the output of the clock generator is connected to the inputs of the forming units of the counting pulses and request pulses, the output of the latter is connected to the input of the gate forming unit, the output of which is connected the input of the storage unit of each display unit, the other input of which is connected to the output of the forming pulse counting unit, the output of the generating unit of the pulse and is connected to the data link, the signaling unit outputs are interconnected and connected to the unit zvuFig. 2 signaling, and the inputs are connected to the information line. 2. The device according to claim 1, of which there is, in order to increase reliability, the control panel is equipped with indicators, and each receiving-transmitting device is made of two receiving filters, each of which through the corresponding matching unit is connected to the coincidence element, the output of which is connected via a counter to the decoder, and the indicators are connected to the outputs of the request and gating pulse generation units. Fig.z Avari