SU983597A1 - Device for locating damage in analog radioelectronic equipment - Google Patents

Description

The invention relates to electrical measuring equipment and can be used to monitor the performance of electronic equipment and determine the location of damage without access to installation.

A device for searching for a place of damage in electronic equipment is known, which contains a source of control signals, a display element, a comparison unit and a memory of reference features C1J.

The drawbacks of the device are. the need for access to installation, connection at many control points, the low level of operation and the high time required for connection.

The closest in technical essence to the invention is a device for recognizing emergency conditions of control objects, comprising an analog converter — a code, a signal filtering unit, a control unit and generating accident signs, two reference feature extraction units, a comparison unit and an C2 emergency state fixing unit. .

The disadvantage of this device is the inability to determine the location of damage and low accuracy

determining the presence of an emergency.

The aim of the invention is to expand the functionality

-devices.

The goal is achieved by the fact that in a device for determining the location of damage in an analog radioelectron apparatus, there is a unit for selecting reference signs, a comparison unit, a control unit and an indication of accident signs, an emergency condition block, the input of which is connected to the first output unit of the control unit. and forming the signs of the accident, the second output of which is connected to the input of the block for selecting the reference signs, and the input to the output of the comparison block, two adders are introduced,

20 three squares: fopa, three integrators, a generator of control signals, the input of the generator of control signals is connected to the third output of the control unit and the formation of alarm sources, and the output through the test object is connected to the first input of the first adder and serially connected first square; and the first integrator - with the first

30 by the input of the second adder, the output of the reference feature extraction unit is connected to the second input of the first adder and through the second quadrant and the second integrator connected in series to the second input of the I second adder whose output is connected to the first input of the comparison unit whose second input is connected through the serially connected third integrator and the third quad is connected to the output of the first adder.

The drawing shows a block diagram of a device for determining the location of a delayed circuit in analogue electronic equipment.

The device contains a block 1 select reference features, an object 2 controls, adders 3 and 4, quadrants 5-7, integrators 8-10, comparison block 11, block 12 of monitoring and the formation of signs of accidents, block 13 of recording of emergency conditions and generator 14 of control signals .

Us; pragma works as follows.

On command from the control unit 12 and forming the signs of accidents, the control signal from the generator 14, passing through the control object 2, sinks through the first adder 3 to the input of the third quadrant 5. The block 1 extracting the reference signs from the command from the second output of the control block 12 the formation of signs of accidents produces a reference signal that carries information about the signal parameter, for example, amplitude, which corresponds to the healthy state of the object 2 of the control. This reference signal is fed to the second input of the first adder 3 and to the input of the second quad b. The sum signal from the output of the first adder 3 through the third quadrant 5 is fed to the input of the third integrator 8, from the output of which is fed to the second vhr of the comparison unit 11. In parallel, the signal from the output of the object 2 of the control and the block 1 of the selection of reference features through the first and second quarantors 7 and b, the first and second integrators 10 and 9 are fed to the first and second inputs of the second adder 4, from the output of which the sum signal is fed to the first input of block 11 compare. From the output of the comparison block 11, information about the equality or inequality of the signals at its input in the form of the difference between the parameters of these signals, such as amplitudes, is fed to the input of the control block 12 and the formation of accident signs. If the parameters of the compared signals are equal, for example, amplitudes, which is possible if the control object 2 is in good condition, the control unit 12 monitors and generates signs of accidents and issues a command to stop the control signal generator 14 and the reference feature selection block 1. Simultaneously, the 12-control unit and the formation of signs of accidents switches the circuit for

indication of the operating state of the monitored radio electronic equipment in the block 13 for fixing the emergency conditions.

In case of inequality of the parameter values of the pa rameters of the compared signals at the inputs of the comparison unit 11, which is possible if one of the cascades of the control 2 fails, the block 12 controls and generates accident signs

5 issues to the block 1 the allocation of the reference signs of the generator 14 of the control signals. A similar command. According to the inequality of the parameter values of the compared signals, for example, the amplitude of the control signal after passing through the control object 2 and the signal from the reference feature extraction block 1, the control block 12 and the generation of alarm signs switches the circuit to indicate the number of the failed cascade in the test equipment in fixation block 13 emergency conditions.

The device allows to increase search accuracy, increase noise immunity from disturbing influences and reduce search time.

Claims (2)

1. USSR author's certificate number 553553, cl. G 01 R 31/28, 1975. 2. USSR author's certificate t 544949, cl. G 05 B 23/02, 1975 (p | ootype).