SU1531122A1 - Device for fire signalling - Google Patents

Abstract

The invention relates to communication technology and digital computing, can be used in information networks with a parallel communication channel. The purpose of the invention is to increase the information content and expand the functionality of the device. The device consists of the first 1 and second 2 broadcast channels, which broadcast information from the first communication line to the second, and from the second to the first, respectively. Each broadcast channel contains the first and second amplifiers, the first, second and third optocouplers, an inverter, the first and second pulse shaper, and the first, second, and third elements I. To provide additional discrete information I / O, the device additionally contains an element in each broadcast channel OR to enter information and a common for two channels element OR to display information. The device allows, in addition to retransmitting single and zero levels of an information message, to transmit information about the disconnected state of the broadcast channels, and the device also allows you to connect an external receiving and transmitting device that can work in conjunction with the first and second lines of communication. 1 Cp, 2 Il.

Description

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Networks that transmit information from the first line of communication to the second, and from the second to the first, respectively. Each broadcast channel contains the first and second amplifiers, the first, second and third optocouplers, the inverter, the first and second pulse shapers, and the first, second, and third elements II. To provide additional discrete information I / O, the device additionally contains in each broadcast channel

The invention relates to communication technology and digital technology computer technology, it can be used in information-computational networks with a parallel communication channel.

The aim of the invention is to increase the information content of the device and expand the functionality of the device by providing additional discrete information input-output from the broadcast channels.

FIG. 1 shows a functional diagram of the device; in fig. 2 g is a functional diagram of the elements of the device, providing additional I / O, discrete information from the broadcast channels.

The device (Fig. 1) consists of the first channel 1 transfix: information from the first line to the second communication link and the second channel 2 of information translation from the second connection line to the first one.

Each broadcast channel contains the first amplifier 1.1 (2.1), the first optocoupler 1.2 (2.2), the first shaper 1.3 (2.3) pulses, the first And 1.4 (2.D) element, the second And 1.5 (2.5) element for switching the upper levels of information signals , inverter 1.6 (2.6), the third element AND 1.7 (2.7), for switching the lower levels of information, the second driver 1.8 (2.8) impulses of switching switching, the second 1.9 (2.9) and the third 1.10 (2.10) optocouplers, the second amplifier 1.11 (2.11 with three states of ta output, source 1.12 (2.12) voltage.

For further replenishment of the discrete information I / O device (Fig. 2) additionally contains in each broadcast channel a SLI element

element ИШ1 for entering information and the common for two channels element OR for outputting information. The device allows, in addition to retransmitting single and zero levels of the information message, to transmit information about the disconnected state of the broadcast channels, and also the device allows you to connect an external receiving and transmitting device that can work in conjunction with the first and second lines of communication. 1 hp f-ly, 2 ill.

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1.13 (2.13) for input of information, o (i-; tions for two channels. Element OR 14 for output of information, input 15 and output 16, respectively, input ir output,;. Discrete information, the values of the first and second translations of transference.

Limits are imposed on the format of the transmitted data over the communication lines. Information is transmitted by words, combined into blocks, in the preceding words of the block, words are transmitted without pauses, at the beginning of a word a starting single bit must be transmitted, two consecutive words must contain at least one signal level change from lower to upper, for example, by introducing the format of the word is a bit of evenness or oddness; the duration of the pause between blocks must exceed the transmission time of two words.

The device (Fig. 1) works as follows.

In the initial state, if there are no signals in the communication lines in each channel, the optocouplers 1.2 (2.2) are de-energized. shaper 1.3 (2.3) low levels of the signal are formed; at the outputs of the And 1.4 (2.4) elements there are also low levels that are fed to the dynamic inputs of shapers 1.8 (2.8) switching pulses of information transcription. The delay of the falling edge of the switching pulses of the formers 1.8 (2.8) at a constant signal level at their inputs is chosen equal to the transmission time

two words, therefore, in the absence of information in the communication lines more than this time, the direct outputs of the drivers are set to low levels, prohibiting the transmission of information

cutting elements 1.5 (2.5) and 1.7 (2.7), optocouplers 1.9 (2.9) and 1.10 (2.10) are de-energized and the second amplifiers 1.11 (2.11) are in a high-impedance state; at the same time, the inverse outputs of the formers 1.8 (2.8) are set to high levels, allowing translation to opposite channels through the elements AND 1.D (2.4).

When information appears, for example, in line I, the start bit through amplifier 1.1, optocoupler 1.2, shaper 1.3 and element 1.4 of the front edge triggers shaper 1.8 of the pulse, the outputs of which will allow the passage of information signal levels through elements 1.5 and 1.7 in the first broadcast channel and prohibiting the passage of information through element 2.4 of the second channel, the levels of information signals through opto 1.9 and 1.10 and the output circuits of amplifier 1.11 switch the polarity of switching on the source of 1.12 line voltage to line II when forming a symmetric x signals, or connect a source voltage to 1.12 line II, or its short-circuited during the formation of unbalanced signals in the line. Since the delay in the formation of the falling edge of the switching pulse by shaper 1.8 is chosen to be equal to the transmission time of two words, therefore each positive edge of the pulses of continuously translated words restarts it. If there is no information in line I during this time, after the block of words ends or at a constant high or low signal level during this time in emergency situations on line I, the driver 1.8 pulses to the initial state, prohibiting the transmission of signal levels through AND 1.5 elements and 1.7 of the first channel and allows the information to be broadcast through element 2.4 of the second channel. I

The second broadcast channel works similarly.

When connecting an external transmitter and receiver (Fig. 2), the device operates as follows. The retranslation functions of the device are fully preserved, the function of the separate and simultaneous matching of the external receiving-transmitting device with the communication lines is added. In the initial state with no information

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The mappings in the communication lines and at input 15 at all inputs and outputs of the OR 1.13 (2.13) elements in each channel and the OR 14 element are at a low level.

When transmitting information from an external receiving and transmitting device, the signals arrive at the input 15 of the device, then to the second inputs of I1B-1.13 (2.13) elements in each channel, the positive front of the start bit simultaneously starts the drivers 1.8 (2.8) pulses of two broadcast channels , which mutually prohibit {the transmission of information from the lines through the elements 1.4 (2.4) of each channel and allow the passage of the signal levels of information from an external receiving-transmitting device through the elements 1.5 (2.5) and 1.7 (2.7) and the subsequent elements on the line I and l ini II at the same time.

The output of the transmitted information from the communication lines to the output 16 of the device is carried out through the OR element 14 from the outputs of the AND 1.5 (2.5) elements of each channel, while false information during an accident on one of the lines is not transmitted because its translation is prohibited by shaper 1.8 (2.8) pulses of the corresponding channel, information output from the operational link is simultaneously allowed.

The device allows the retransmission of discrete information at standard data processing interfaces or at non-standardized joints with active levels of unbalanced signals, as well as expanding the functionality due to the possibility of connecting an external receiver-transmitter device to the communication lines. When an external receiving and transmitting device is used in the device in combination with the possibility of separately detecting emergency conditions of one of the communication lines and prohibiting their transmission to another, the communication between the repeater and the receiving transmitter and the working communication line is saved, which reduces the number of dependent device failures and increases the reliability of the device.

Claims (2)

1. A device for transmitting and receiving discrete information, comprising the first and second translation channels, whose inputs are connected to the first and second communication lines, respectively, and the outputs are connected to the second and first communication lines, respectively; each broadcast channel contains the first decoupling element made on the optical interface, the output of which is connected with the input of the first pulse generator, the first amplifier, the output of which is the output of the broadcast channel, characterized in that, in order to increase the information content of the device, a voltage source, the first, the second and the third, are entered in each broadcast channel And elements, second pulse generator, inverter, second and third isolation elements, executed on optocouplers, second amplifier, whose information input is a broadcast channel input, output of the second amplifier is connected to the first optocoupler input, the output of the first pulse shaper is connected to the first the input of the first element And, the output of which is connected to the first input of the second element And, with the input of the second pulse shaper and with the input of the inverter, whose code is connected to the first input of the third element And, the direct output of the second The first pulse generator is connected to the second inputs of the second and third elements I, whose outputs through the same optocouplers are connected to the first and second information inputs of the first amplifier, respectively, the outputs of the power sources are connected to the power inputs of the first amplifier of their broadcast channel and the power inputs of the second amplifier another broadcast channel, the inverse output of the second pulse generator is connected to the second input of the first element And another broadcast channel. 2. The device according to claim 1, characterized in that, for the purpose of expanding the functionality by providing additional I / O of discrete information from the broadcast channels, the device has an SHS element and each translation channel between the output of the first VOG9 of the AND element and the inputs of the inverter, the second pulse shaper, and the first input of the second element AND is introduced the OR element my first entrance 5 and the output, respectively, the second inputs of the OR elements of both broadcast channels are combined and are the input of the input of discrete information for the first and second translation channel, the first and second inputs of the OR element 0 five connected to the outputs of the second elements AND of the same broadcast channels, respectively, the output of the OR element is the output of the discrete information output of the first and second broadcast channels. Channel 1 If 1, J3 Г Ш 15 ksshal2 2.5 2.7 /.7 2.6 2.6kg / 3 Z. t - Btfixod Fie.2