SU642889A1 - Majority signal-selecting arrangement - Google Patents

Description

(54) DEVICE FOR THE MAJORITY CHOICE OF SIGNALS

Claims (2)

This invention relates to the field of tomato and computer technology. The device is intended for operation of multichannel digital devices, reserved on the basis of majority logic. A major reserve device l is known, containing a major element connected to redundant units, control units connected to OR elements, a reversible counter connected through a decoder, and weight sensors with control inputs of the majority element. The drawback of the device is reduced noise immunity caused by the presence of memory elements in the meter. The closest in technical essence and effect achieved to the invention is a device for the majority selection of 2J signals, containing a tl -input majority element, the first n-1/2 inputs of which are connected to the information outputs of the keys, while the control inputs of the keys are connected to the outputs of the blocks control device. The disadvantages of this device are low noise immunity due to a large number of memory elements (besides the counter, the switch must have a switch at the device output, since the signal to its control input goes through a differentiating chain) and there is a switch at its output that leads to a discontinuity in the formation of the output signal. The aim of the invention is to increase the reliability (noise immunity) of the device. This is achieved by the fact that the device for the majority choice of signals contains an additional key, the element AND the elements OR, and -1/2. whose outputs are connected to the corresponding second n-l / 2L inputs of the majority element, and the first inputs to the outputs of the corresponding control units. The last input of the majority element is connected to the information output of the additional key, the information input of which is connected to the output of the corresponding OR element, the first input of the OR element is connected to the output D1 of the control unit and the first input of the AND element, the output of which is connected to the control input of the corresponding key, and n 1/2 of the inputs E642 are connected to the outputs of the corresponding control blocks. FIG. 1 is a functional block diagram of a device for the majority selection of signals; FIG. figure 2 shows an example of the implementation of a three-channel device for the majority choice of signals. The device in figure 1 contains ft - inlet (p - odd number) majoritarian element (ME) 1 with the first p-1/2 inputs .i; 2., The second-1/2 inputs i ni / 2 last input 4, control units, elements OR keys 7j | - 7 4-1 / 2 - control inputs Jc H4i / u and element 9. The device in figure 2 contains three-input ME 1 with the first 2, second 3 and last 4 inputs , control units, OR elements 6j and 6, keys 7 and 72 with control inputs Z and Sj and element 9. The device for majority selection of signals works as follows. . When all sources of information are working properly, signals O are present at the outputs of blocks 5, the keys 7j are closed, and the input signals through the keys and elements OR 6j bp + D / z-arrive at the corresponding ME 1. If an error occurs at one of the inputs 10j 10p-y2 of the device triggers the corresponding control unit (, .iy2 its output is a signal that at the control input opens the corresponding key (- "-1/2 result of the error. The working signal is disconnected from the corresponding input (Yj.i) ME, on which the O. signal is set. the ME input is equivalent to setting the O signal on it. Simultaneous errors at the inputs s lead to a device failure, since more than half of the ME signals remain correct. When an error occurs, one of the inputs 10 4-1 / 2 of the device triggers the corresponding the control unit (5ts.u2.- 5i-jj), at its output a signal is sent in, which through the corresponding element OR (arrives at the corresponding input (3j-, y2) of the ME. The simultaneous occurrence of errors at the inputs does not lead to a failure of the device, since more than half of the ME signals are correct. The simultaneous occurrence of Sealy is sequential in any possible order of errors at the 10c inputs does not lead to device failure, since even in the worst case, due to errors at the inputs lOj-10t5-i inputs 2j -2n-i ME, the signals O, which compensate for the signals installed at the ME inputs (due to errors at the inputs lOn + l / ar Jupl) The operation of the elements associated with the input lOrj of the device depends on the state of the inputs lOn + i / 2, - if at least on one the correct signal is present from these inputs, the signal O is present at the output of the corresponding control unit, During the AND gate 9 and the signal G, switch 7n + 1/2 closed. If the input signal 10 at this has a correct signal, then it passes to the input 4 of ME, if input 10 (7 there is an error, then at the output of the control unit 5 it is established that passes through the OR 6fj4m element and the key 7) E. If erroneous signals are present at the inputs lOp-i, then at the occurrence of an error at input 10) at the output of element 9, a signal appears that opens at the control input 8 (1 + 1/2 key 7nfJL / 2. As a result, signal O is set at rokhod 4, and the correct signal is output at the ME output until at least one of the inputs lOn-j / mouth The device provides the right signal at the output as long as at least one of the inputs has the right signal. In the proposed device, instead of the major element, any p-input threshold element can be used with a threshold E () while the number of kangshov containing the control unit and the key must be 6-1, the number of channels containing the control unit, the keys and the OR element must be n- & and one channel must contain a control unit, an OR element and a switch. The technical and economic effect of using this device is determined by the nature of the losses due to failures, to prevent which the device is installed in a particular system. An invention of a device for the majority choice of signals, comprising a p-input majority element, the first I-1/2 inputs of which are connected to informational outputs of keys, the control inputs of which are connected to the outputs of control units, characterized in that it contains an additional key, the element And, and n + i / 2 elements ILY, n-1/2 outputs of which are connected to the corresponding second n-1/2 inputs of the majority element, and the first inputs - with the outputs of the corresponding control units, the last The major element input is connected to the information output of the additional key, the information input of which is connected to the output of the corresponding OR element, the first input of which is connected to the output of the control unit and the first input of the AND element, the output of which is connected to the control input of the corresponding key, and P-1/2 inputs are connected to the outputs of the corresponding control units. Sources of information taken into account in the examination. 1. The author's certificate number 315180, cl. Q 06 R 11/00, 13.04.70, 2. The author's certificate 411455, cl. G 06 R 11/00, 03.24.70