SU855717A1 - Device for receiving information with checking - Google Patents

Description

(54) DEVICE FOR RECEPTION OF INFORMATION

one

The invention relates to automation and computing and can be used in redundant digital computing systems to control the transfer of information from a multi-channel transmitter to a single-channel receiver.

Devices are known for controlling the majority-reproducing nodes, containing a control signal generator and a serially connected coincidence circuit, a differentiating node and a majority element, to the inputs of which three parallel monitored working nodes, three And elements, and a decoder 1 are connected.

However, such devices have a complex implementation and do not allow monitoring in the operating mode.

The closest technical solution to the invention is an information monitoring device comprising a multi-channel transmitting device, a commutator, an adder, a comparison circuit, a buffer memory, one with a control key.

A national receiver and sampling circuits, for example, two out of three 2.

However, the known device for controlling information has a complex implementation, i.e. it contains sampling schemes. Practically, the sampling schemes impose strict requirements on the synchronous operation of the redundant channels of the transmitting device. With the health of only one channel, the device for monitoring information on special equipment with

10 additional time spent searching for a healthy channel of the transmitting device.

The purpose of the invention is to build the device.

This goal is achieved by the fact that a device for receiving information with a controller, containing a switch, a memory unit, a modulo adder and a comparison circuit, the group of information inputs of the device connected to the group of information inputs of the switch, the first output of which is connected

Claims (2)

20 with the input of the memory unit and the modulo adder, the second output of the switch is connected to the first input of the comparison circuit, the second input of which is connected to the output of the modulo adder, the output of the memory block and the first output of the comparison circuit are respectively the first and second outputs of the device. and a decoder, the second output of the comparison circuit being connected to the counter input, the outputs of which are connected to the inputs of the decoder, the outputs of the decoder are connected to a group of control inputs of the switch. At any time, information is received only from one channel of the transmitting device. Therefore, there are no strict requirements for the synchronous operation of the redundant channels of the transmitting device. The search for a healthy channel is combined with the reception of information from the transmitter. The drawing shows a block diagram of the proposed device for controlling information. The device contains a group of 1 information inputs, which is connected to the group ai. the formation inputs of the switch 2, the outputs of the information bits of which are connected to the inputs of the buffer memory 3 and the modulo-4 adder, and the outputs of the control bits — with the first inputs of the comparison circuit 5, with the second inputs of which are connected the output 4 of the modulo-three adder. The first output of the comparison circuit 5 is connected to the first input, and the outputs of the buffer memory 3 are connected to the second inputs of the single-channel receiving device 6 and are respectively the second and first output of the device. The second output of the comparison circuit is connected to the counting input +1 of the counter 7, the outputs of which are connected to the inputs of the decoder 8, the outputs of which are connected to the second inputs of the switch 2. The information monitoring device is operated as follows. Reception of information on information inputs 1 occurs cyclically by arrays of words. In the cycle of information transmission via information inputs 1 from the transmitting device, along n channels, it enters the inputs of switch 2. Information is received from the transmitting device only from one channel, the number of which is determined by the state of the counter 7: 0 ... 00 - 1 channel , 0 ... 01 - 2 channel, 0 ... 10 - 3 channel, etc. The width of the counter 7 is determined by the formula where m is the number of bits of the counter 7; n is the number of channels of the redundant transmitter I. The outputs of the densifier 8 connected to the counter 7 are controlled by the elements AND of the switch 2. In the transmission cycle, information from one of the channels of the transmitting device through the switch 2 is fed to the registers of the memory block 3, where it is stored until signal generation modulo three. In parallel, information arrives at the modulo-four adder. At the same time, the control bits come to the comparison circuit 5, where they compare with the result of the modulo-generated three information bits of the word at the outputs of the adder 4. In the case of a correct reception, i.e., a comparison of the moduli of all three words of the array, from the comparison circuit 5 via bus 9, the direct device 6 receives a comparison signal modulo three received information. According to this signal, information is received from memory block 3 to the processing units 6 of the receiving device. In case of an incorrect reception from the comparison circuit 5, bus 10 sends to the counting input +1 of the counter 7 a modulo three comparison information signal. In this case, the meter 7 changes its state to ma +1 and switches the reception of information from the adjacent channel of the transmitting device 1 (circular switching of channels). If the information from the last (nth) channel of the transmitting device 1 is received incorrectly, the counter 7 is reset, i.e., the reception of information from the first channel of the sending device 1 is switched. The received information is not correctly used (null). The use of the proposed device for controlling information provides, in comparison with the known technical solutions, the simplification of the device, the automatic search for a working one. channel, improving device reliability. An apparatus for receiving information with a control, comprising a switch, a memory unit, a modulo adder, and a comparison circuit, wherein a group of information inputs of the device is connected to a group of information inputs of the switch, the first output of which is connected to the input of the memory block and modulo adder, the second output of the switch is connected to the first input of the comparison circuit, the second input of which is connected to the output of the modulo adder, the output of the memory unit and the first output of the comparison circuit are respectively the first and the second in Outputs, characterized in that, for the sake of simplicity, the device comprises a counter and a decoder, the second output of the comparison circuit being connected to the single input of the counter, the output of which is connected to the inputs of the decoder; the decoder outputs are connected to the control inputs group of the switch. Sources of information taken into account in the examination 1. The author's certificate of the USSR M 536489. cl. G 06 1 11/00, 25.11.76. 2.Domanitsky SM Construction of reliable. logical nodes. M., Energie, 1971, p. 104107 (prototype). .JLJ dt ff / 7