SU903935A1 - Information transmitting and receiving device - Google Patents

Description

I

The invention relates to computing and is intended for data transmission and communication with a control computing device, can be used in various systems for collecting and processing information V. in control systems of distributed objects.

A device for transmitting and receiving discrete signals, -containing drives — repeaters, encoding and decoding blocks, delay elements, memory element, comparison blocks, addition blocks, registers, memory blocks, and control elements, is known.

This device has the disadvantages defined by the DECAY hardware solution and the methods of protection.

A device for data transmission is known, comprising blocks, autonomous monitoring, matching blocks, error-correcting coding blocks, hub units: ki, linear blocks, block

message block, message flag block, character decoder, memory block, AND and OR elements, address decoder 2.

However, the known device does not allow organizing the backbone structure of the information transmission line between the computing devices. In addition, it does not provide end-to-end transmission control.

10 of the information. Thus, a malfunction in the delivery of information can be detected only at the receiving end of the communication line.

The closest technical

An entity IS to the proposed is a device for transmitting and receiving information, containing at the control point a command generator, the output of which is connected to the Glock. Control, the output of the control unit is connected to the first input of the linear unit I connected to the communication line with the synchronized pulse shaper. points, each of which is connected to the communication line output of the linear unit, the output of the body forming (decoder) commands connected to the input of the control unit, one output of which through the allocation unit sync lsa connected to a first input of a linear unit. In addition, the control point and monitored points contain a serial code converter and a correlation code, a correlator of a c. Ionic code to a serial code, an information reliability control unit, the outputs of each of which are connected to the outputs of the control unit, the inputs connected to the corresponding outputs of the linear block 3. However, in the known device it is not possible to control the information during transmission to the communication line, since the control of the transmitted information is carried out only when it is received to another ohm end line communication. . In addition, this device does not allow the organization of the backbone structure of the transmission line of information between computing devices, which limits the scope of application of the device. The purpose of the invention is to expand the field of application of the device. The goal is achieved by the fact that in a known device for transmitting and receiving information containing a control unit, the first output of which is connected to the first input of the coding unit, the second output of the control unit is connected to the first input of the first shift register, the output of which is connected to the second input of the coding block The van, the output of which is connected to the communication channel and is connected via the linear unit to the input of the code control unit and the first input of the control unit, the third output of the control unit is connected to the first input of the output unit the request, the command decoder, the first and second outputs of which are connected respectively to the second input of the control unit and the first input of the first trigger of blocking the request signals, the output of which is connected to the second input of the block of issuing the request signals, entering the second shift register register, the second trigger of blocking the query signals, block control signal transmitters, transmit receive, address code comparison unit and interface trunk to which the first input and output of the control signal pickup drivers block are connected the first input and the third output of the command decoder and the output of the request signal supply unit, the fourth output of the command decoder is connected to the first input of the request signal blocking trigger, the output of which is connected to the third input of the request signal supply unit, the fourth input of which is connected to the fourth output of the control unit, the output of the control unit is connected to the first input of the second shift register, the second input of which is connected to the output of the line unit, the output of the second shift register is connected via the address code comparison block the third input of the control unit and directly with a second input of the transceiver unit actuating signal, a third input coupled to an output of the code monitoring unit, the second output of the block control signal transceiver coupled to the second inputs of the first shift register and trigger lock request signals. The drawing shows the block diagram of the device. The circuit comprises a block 1 of transceiver control signal drivers that performs parallel bi-directional signal generation for receiving and transmitting data; a decoder of 2 commands that receives a command code for organizing various modes of operation of the organizer; an inquiry signaling unit 3 executed, for example, on an AND-OR element and issuing transmit and receive communication request signals; an address code comparison unit A, implemented on d- (ultiplexer, and allowing the selection of this device from a group of devices connected in parallel to the k communication channel, control unit 5, organizing the operation of all units according to the algorithm defined by the operation mode of devices Triggers 6 and 7 the lock request signals, serving to block the communication request signal reception and transmission by the control unit 5, control unit 8 of the code, carried yuschy control code and the correlation length. Parcels, the registers 9 and 10 shift conversion SLUI

stored in serial parallel code 10 and serial in parallel 9, block 11 encoders and, forming the service and correlation codes, linear receiving unit 12, designed to receive serial information received from channel 13. communication to the correl coding code, and converting it to serial code. Communication channel 13 represents a two-wire line, an interface trunk 14, representing a set of buses of information address and control signals, which is used to communicate with the device, with control or other devices connected to this highway. The device is controlled from the interface line 1, to which a control computing device (not shown) is connected. The proposed device operates in the following modes: blocking communications requests for transmitting and receiving, transmitting information to a functional unit, receiving information from a functional unit. A functional block is a block that performs the functions of controlling a device for transmitting information, input / output, or processing information, and is connected to the corresponding interface trunk. The operation modes of the device are selected from the controlling computing device through the interface trunk k to the block 11 of the formers, which, due to the availability of bi-spry buses for receiving and issuing information, has allowed the creation of a sufficiently flexible trunk. In each mode of operation, information is exchanged in cycles, the number of which is determined by the length of the transmitted (received) array. At the end of each cycle, a receive or transmit communication request signal is generated, connecting to the lU interface trunk. Each cycle consists of cycles, one bit of information is received or transmitted during one clock cycle. The synchronization in the reception mode is carried out by the starting pulse coming from the communication channel 13 before the beginning of each cycle with a duration equal to the duration of the cycle. The transmitted information should not have a constant component, for this, before the beginning of the cycle, a two-wire line is discharged. In addition, the transfer of information is done by cor-. a relational code that increases the reliability of the transmitted information and reduces the constant component to zero,

In the Transmission and reception blocking mode, the control computing device from the interface trunk 1 issues a command word to the input of the decoder 2 commands, in which the blocking address of the reception or transmission is determined, and in the control unit 5, a transmission or transmission request signal is issued. From the output of the decoder 2 commands, the signal is fed to the input of the selected trigger b or 7. If there is a signal coming from the output of block 1 to the inputs of the flip-flops 6 and 7, a receive or transmission lock signal is generated at the output of the corresponding trigger. This signal is fed to the input of block 3, to another input of which also receives a receive request or a transfer request, formed by control block 5. Block 3 transmits to inter 5) main bus 1 signals for the presence or absence of a request for a transmission or reception link. In the Information transfer mode to a function block with an interface. line k, the control computing device issues a command word to the command decoder 2, which generates an enable signal for issuing data or a command to the control unit 5. The control unit 5 generates an operation code and permission for unloading the shift register 10 with data received from the interface highway 1 through the unit 1 to the input of the register 10. In addition, the control unit 5 generates shift pulses for converting the parallel code to the input of the register 10 into a serial the code at its output, From the output of the register 10, the information is fed to the input of the coding unit 11, which forms the service and correlation codes in accordance with the signal of the control unit 5, which determines number of data or control word; The output G of the encoding unit 11 information in the correlation serial code is transmitted to the communication channel 13. At the same time, control unit 5 generates a transmission communication request signal, blocked by trigger 6, and via unit 3 outputs to interface line 1.

The operation of the device during the formation of the request signal is similar to the operation described in the Block transmission and reception. In this case, the peculiarity of this device is the presence of the second shift register 9, to which the information transmitted to the communication channel 13 is fed through the linear unit 12. This makes it possible to control the transmitted information by comparing it in the control computing device.

In the Receiving information mode from the function block, the law, received from communication channel 13 and containing the starting message, operation code and eight information bits, is divided into command and information words depending on the operation code.

When receiving a control word, the lower three bits of the information are the address code of the function block with which you need to make a connection. The information received from the communication channel 13 through the block 12 is fed to the input of the control block 5, the input of the register 9 and the input of the control block 8. The control unit 5, after receiving the starting parcel, generates a signal permitting the entry of information into the register 9, which converts the serial code into a parallel code, and through the unit 1, the information enters the interface highway 1.

When receiving a control word, the lower three bits of information from the output of register 9 arrive at the input of block A, in which the received code is compared with the address assigned to this function block. When the codes match, block k generates a signal arriving at control block 5, which generates a receive communication request signal arriving at block 3, and a device is prepared for receiving the data. The blocking of the signal for a request to receive communication occurs in the same way as described in the Block receive and transmit mode.

At the same time, the received information is fed to the input of block 8 of the control code, in which the correlation code and the length of the parcel are monitored, and a code of the state word is generated, which through block 1 enters the information buses of the interface highway 1.

By analyzing the code of the state word, the control computing device can repeat the communication cycle.

The proposed device allows organizing the backbone structure of the information transmission line between computing devices, which significantly reduces hardware costs, carries out operational control of the transmitted information at the transmitting end of the communication channel in order to detect failure during transmission, which significantly increases the reliability of reception of the transmitted information. The use in the device of blocking signals of communication, reception and transmission signals expands its scope in working with control computing devices implemented on the most modern elemental base (microprocessors, large integrated circuits) with high speed. The use of the device allows to increase the accuracy of control in the transmission of information and to create various hardware controls for controlling distributed objects.

For example, given a maximum distance of a device from a controlling computing device of 3 km, a maximum number of devices of eight pieces and their pair connection with a radial structure, the total length of the connecting cable would be (by the binomial coefficient): I 3C | 84km With the trunk structure with the same eight elements, the cable length will be: 8 3 km. Taking into account the cost of the cable TVS-T 20x2x0.5 230 rubles per 1 km and the cost of the earthworks for laying the cable 23.2 kopecks per 1 m, the economic effect will be. 27 thousand rubles.

The annual economic effect with the release of devices 100 pieces will be:

27,100

 thousand roubles. eight

The invention is a device for transmitting and receiving information containing a control unit, the first output of which is connected to the first input of the coding unit, the second output of the control unit is connected to the first input of the first register, the output of which is connected to the second input of the coding unit, the output of which is connected to the communication channel and through the linear unit is connected to the input of the control unit and the first input of the control unit, the third output of the control unit is connected to the first input of the request unit, the command decoder, the first and Secondly, the outputs of which are connected respectively to the second input of the control unit and the first input of the first trigger of blocking the interrogation signals whose output is connected to the second input of the block issuing the interrogation signals characterized in that in order to expand the application area of the device, the second shift register is entered into it interrogation signals, a block of drivers for control signals during an emissivity transfer, a block of comparison of address codes and an interface trunk to which the first inputs and output of the block of shape are connected the control transmit signals, the first input and the third output of the decoder cat mand and the output unit of the request signal, the fourth output of the command decoder is connected to the first input of the request interlock trigger, which is connected to the third input of the output unit of the request signal, the fourth input connected to the fourth output of the control unit; the fifth output of the control unit connected to the first input of the second shift register, the second input of which is connected to the output of the linear unit; the output of the second register of the secondary register dinen through the address code comparison unit with the fifth input of the control unit and directly with the second input of the transmit and receive control signals driver unit, the third input of which is connected to the output of the code control unit, the second output of the transceiver control signals driver unit is connected with the second inputs of the first register shift and triggers block request signals. . Sources of information, they are taken into account in the examination 1. USSR author's certificate №, cl. G 08 C 19/28, 1975. 2. USSR author's certificate N 651395, cl. G 08 C 19/28, 1977. 3. The author's certificate of the USSR 598110, cl. G 08 C 19/28, 1976 (prototype).

Claims (1)

Foomula inventions A device for transmitting and receiving 1 information containing a control unit 903935, the first output of which is connected to the first input of the encoding unit, the second output of the control unit is connected to the first input of the first register of the cdvc, the output of which is connected to the second input of the encoding unit, the output of which is connected to the communication channel and through a linear block connected to the input of the control unit and the first input of the control unit, the third output of the control unit is connected to the first input of the request signaling unit, command decoder, first and second outputs respectively connected to the second input of the control unit and the first input of the first request signal blocking trigger, the output of which is connected to the second input of the request signal issuing unit, characterized in that in order to expand the scope of the device, a second shift register and a second signal blocking trigger are introduced into it request block 10. request, the fourth output of the command decoder is connected to the first input of the request signal blocking trigger, the output of which is connected to the third ₅ input of the request signal block, the fourth input of which is connected to the fourth output of the control unit, the fifth output of the control unit is connected to the first input of the second shift register, the second the input of which is connected to the output of the linear block, the output of the second shift register is connected via the address code comparison unit with the fifth input of the control unit and directly with the second input of the form unit transceivers of control signals of reception and transmission, the third input of which is connected to the output of the code control unit, the second output of the block of drivers of control signals of transceiver is connected to the second inputs of the first shift register and triggers of blocking request signals.