SU744483A1 - Control system monitoring device - Google Patents

Description

one

The invention relates to the field of automation and measuring instrumentation and can be used to control the electrical parameters of control systems of various objects.

Devices are known that serve for this purpose and contain a switching unit, a program control unit, a processing unit, a conversion and measurement unit, a stimulus signal generator, first and second signal conditioners, and a control and display console 1 and 2.

The disadvantage of these devices is to reduce the speed when conducting self-monitoring.

Of those known, the closest to the proposed device according to the technical entity is a device for monitoring control systems, adopted as a prototype and containing series-connected stimulus, a switch, a converter and a parameter processing unit, the first output of which through the first driver and the second output The signal driver is connected to the first inputs of the first and second switches, respectively, via the vure, the second input of the first non-switch is connected to the first output b control locus, the second outputs of which are respectively connected to the second inputs of the stimulus, the switch, the converter and the parameter processing unit, and the third output and the first input 5 to the input and the first output of the control panel and display, respectively.

The aim of the invention is to improve the speed of the device in the self-monitoring mode.

The goal is achieved by the fact that

10, the proposed device comprises an AND element and an OR element, the first input of which is connected to the first output of the control unit, the second input to the second output 15 of the control and display console and the first input of the AND element, and the output to the second input of the second switch, the first and second outputs which are connected to the corresponding outputs of the first switch and respectively to the second and third inputs of the control unit, the fourth input of which is connected to the output of the AND element connected by the second input to the output of the second signal conditioner cash.

Pa the drawing shows a block diagram of the proposed device.

It contains a switch 1, a transducer 2, a stimulus block 3, a parameter processing block 4, a control block 5 30, a control panel 6 and a indicator, first and second signal conditioners 7 and 8, first and second switches 9 and 10, and OR, the element And 12, the first and second outputs 13 and 14 of the processing unit 4, the inputs 15-17 of the unit 5.

The device works as follows.

The routine inspection mode or self-monitoring with simulated faults, the type of control system being tested and the nature of operation are automatically or semi-automatic set by controls and displayed on the console indicators 6. In accordance with the Checks program incorporated in unit 5, the control object is connected via switch 1 to unit 3 and converter 2. The result of the conversion goes to block 4, where the necessary initial data and the values of the boundaries of the lower and upper tolerances are entered from block 5 previously th parameter. Block 4 makes a logical assessment of the test result and generates a signal at output 14 if the parameter is within the tolerance range, or output 13 if the parameter is outside the tolerance limit. The automatic transition to the next test or termination of the test process is determined by signals from drivers 7 and 8, which come through the signal inputs of switches 9 and 10 to the corresponding inputs 16 "Norm and 17" There is no norm for unit 5. In the routine testing mode, the control input of switch 9 the signal from block 5 goes directly to the control input of the switch 10 signals. the block comes from block 5 through element 11 during the control of the signal forming path "There is no norm, including the driver 8. At the same time, the output of the signal generator 7 sig The "Norm is connected to the input 17" There is no norm, and the output of the driver 8 of the signal "There is no norm to the input 16" The norm of the block 5.

When conducting a self-monitoring mode with simulated faults, the signal from the console 6 is fed to one input of the element 12, giving permission for the signal from the output of the driver 8 to pass through the second input of the element 12 to the input 15 of block 5. The same signal from the console 6 through the second input of the element OR 11 enters the input of the switch 10 and connects the output of the imaging unit 8 to the input 16 "Block 5 norm. The latter, by the signal at input 15, generates a command to be displayed on the remote control 6, for example, test numbers and parameter values; The operator, her bb 6 instructions, observes, by the displayed information, the proper passing of the process of self-control, i.e. the intact working device.

Thus, the invention makes it possible to perform self-checking with simultaneous (for each check) imitation of faults in the system being tested.

0 control for one automatic cycle of the device and allows you to reduce the time of self-control.

Claims (3)

1. USSR author's certificate number 343255, cl. G 05В 23/02, 1970. 2. USSR author's certificate number 415644, cl. G 05В 23/02, 1970. 3. USSR author's certificate number 377776, cl. G 05В 23/02, 1970 (prototype).