SU362333A1 - DEVICE FOR AUTOMATIC CHECKS - Google Patents

Description

one

The invention relates to the field of computing and can be applied in various information processing systems.

A device for automatic control, consisting of a coitrol code generation circuit, an analog control sensor, a voltage measurement circuit, an indication circuit, which allows coitrol of the converter and its operation in a digital tracking system (DSS), is known.

However, the known automatic control device has a significant drawback. The test problem is solved with limited accuracy, which depends on the test error and the accuracy of the analog sensor. It does not check for the presence of all transducer bits. During monitoring, the operating mode is interrupted. The control is performed only in the static position of the converter. Single faults can reduce control accuracy.

In order to improve accuracy and speed, the proposed device includes control circuits for each bit of the converter, and the display circuit consists of display elements, the inputs of which are connected to the outputs of the control circuits of each discharge and fed to the n inputs of the And circuit, the output of which is connected to (n + 1) display element. Parallel rt-bit converter code

comes through the control circuit of each bit on the display circuit. The transmitter malfunction is determined by the corresponding indication element of the display circuit.

The advantage of the proposed automatic control device is to improve the accuracy of fault detection (each bit of the converter is monitored),

the time required to determine the location of the malfunction is reduced (the converter is monitored per one turn of the converter shaft), a single malfunction per one revolution of the converter shaft is eliminated, the converter is monitored dynamically in the operating mode.

The block diagram of the proposed device for automatic verification of the converter "shaft - code with a parallel-output code is shown in the drawing, where indicated:

I- iidication scheme; 2 - control circuit of the 1st bit; 3 - trigger preparation; 4 - trigger code availability; 5 - scheme 6 - delay lines; 7 - code bus of the 1st bit; eight -

trigger trigger output; 9 - output circuit "And 5; W - initial installation bus (NU);

II- output of the control circuit of the 1st bit; 12 - indication element of the 1st bit; 13 - the element of the story; 14 — scheme 15 — code bus of the 2nd bit; 16 - control circuit

2nd bit; / 7 -cod bus tire n-th bit; 18 - scheme 19 - output of the trigger preparation; 20 - trigger preparation; 21 - trigger code ialichi; 22 - output of circuit 23 - control circuit of n-bit; 24 - delay lines; 25 output of the control circuit of the 2nd bit; 26- output of the n-th control circuit; 27 - display element of the 2nd bit; 28 is an indication element of the n-th bit.

Preparation trigger 3 is used to prepare a code entry into trigger code 4 and to exclude a single bit of the 1st bit of the code that poses to code bus 7. Output 8 of the preparation trigger arrives at the first input of the And 5 circuit, and the second input is connected to the code bus 7. Input 7 through the delay line 6 enters the unit input of the preparation trigger 3. Output 9 of the circuit “And 5 enters the unit input of the trigger 4 for the presence of a code. The zero inputs of the flip-flops 5 and 4 are connected to the bus НУ 10. The output // trigger of the code is fed into the display element 12 of the 1st bit of the indication circuit /.

The display circuit / consists of the display elements 13 required to indicate the converter malfunction, the faulty converter bit, and the AND 14 circuit. The outputs of the monitoring circuits of each bit of the converter are respectively fed to their display elements and to the l inputs of the And 14 circuit, the output of which connected to, display element 13.

The operation of the automatic control device is as follows.

By the signal НУ, which entered the bus 10, the device is set to its initial state. By the signal going on the code bus (for the first bit on bus 7), preparation trigger 3 is set to one state after a time longer than the code pulse duration, and gives the enable potential to the first input of the "And 5" circuit. u "not 7, sets the trigger 4 of the presence of the code in one state. The trigger 3 of preparation is set to one after the action of the pulse coming through the code wires 7. These m exclude the action of single fault pulses that may occur in the code buses during the control of the converter.

The polling frequency of the transducer is chosen such that during the time interval between the polling pulses the current value of the L-discharge transducer code, which differs from the previous one by the least significant bit, is recorded. At the same time 0.5 2 U; Gg (where 7i is the control time of the converter; G2 is the period of the converter shaft rotation).

In the event of a defective discharge converter (for example, the first discharge) trigger 4 having

the code is not set to one. At the same time, the output potential 11 of the first discharge indication element 12 is output from the output 11 of the code presence trigger, and the & 14 circuit outputs the potential potential to

display element 13.

Subject invention

A device for automatically checking a converter shaft-code with a parallel output code containing control circuits connected to an indication circuit, characterized in that, in order to increase the accuracy and speed of the device, each control circuit contains preparation and code triggers, a delay line and “And, the single input of the preparation trigger is connected via the delay line to the code bus and the first input of the circuit“ H, the output of the preparation trigger is connected to the second input of the “And circuit, the output of which is connected to one th input trigger code available.

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