SU1415450A1 - Device for checking operability of discrete information receiver - Google Patents

Abstract

The invention relates to telecommunications engineering and allows for increasing the reliability of control. The device contains an input signal simulator 1, n keys 2, a control time driver 3, indicators 4, 12, a form-code converter 5, a main comparison unit (BS) 6, a main code generator 7, a counter 8, a clock pulse driver 9, triggers 10, 14, And 11, 13 elements, p additional BS 15, n pulse counters 16, n additional code 17 generators. The device is based on the fact that the determination of the faulty element of the controlled discrete information receiver (KP) 18 is carried out by comparing the distorted control code Igna code reference signal, the shape of which corresponds to the well-defined faults. If KP 18 distorts the signals of the simulator 1 above the norm set by the main generator 7, then the main one; C generates signals of logical 1, which are counted by counter 8 for the monitoring interval, specified by the form 1 relay 3. When KP 18 is inoperative, the signal of counter 8 on the indicator J 4 generates a signal of Lviv, and with the help of blocks 2,9,10 , 12, 13,15,16 specific malfunctions are determined. 1 il.

Description

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about

The invention relates to telecommunications technology and can be used in automated diagnostic systems for monitoring the performance of discrete information receivers. The purpose of the invention is to increase the reliability of the control.

The drawing shows a structural electrical circuit of the proposed device.

A device for monitoring the performance of a discrete information receiver contains an input signal simulator 1, n keys 2;, - 2c, formed. control time 3, first indicator 4, form-code converter 5, comparison main unit b, basic code generator 7, counter 8, clock pulse former 9, first trigger 10, first element 11, second indicator 12, second element 13 , second trigger 14, n additional blocks 15, -15у, comparison, n counters. 16, -16, pulses, n additional generators 17, -17 codes, monitored receiver 18 of discrete information is shown.

The device works as follows.

It is known that the aging of elements of the monitored receiver 18, resulting in failures, in a certain way distorts the pulse shape of the input signal simulator 1. For example, the resolution and aging of the elements of the discriminators and decoders of the F ,, F and F signal receiving units results in blurring of the fronts and decays and a decrease in the pulse duration. Therefore, knowing in advance what effect the control signal has on the malfunction of one or another element of the monitored receiver 18, it is possible to determine this element with great confidence by comparing the distorted control signal - its code, with the code of the reference signal, the shape of which corresponds to a strictly defined fault.

When a control signal is received on the input bus, the monitored receiver 18 is disconnected from the information bus, the input signal simulator 1 is turned on, one is set to the second trigger 14, and the generator 3 is started, which forms the monitoring time interval of the monitored receiver 18.

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The signals of simulator 1 are fed to the input of controlled receiver 18. Converter 5 converts the shape of the distorted signal of simulator 1 into a code that goes to the first input of the main comparison unit 6, to the second input of which through the first element 11 comes from the output of the main generator 7 a code characterizing the distorted signals of the controlled receiver 18, which is operable i.e. Satisfy U1:; its technical and operational standards. If it is unworkable, i.e. the distortion of the simulator 1 signal exceeds the norm defined by the main code generator 7, then the logic 1 output signals appear at the output of the main comparison unit 6, the number of which is counted by the counter 8 and the monitoring interval tis.

Claims (1)

At the end of the monitoring time, the corresponding signal from the output of the imaging unit 3 tilts the second trigger 14 and polls the counter 8. If the monitored receiver 18 is inoperative, during the monitoring time t, the counter 8 is filled and the signal of the request will output the logical 1 signal, which is displayed by the first indicator 4 As the executive command of Avari, In addition, the driver 9 is started, which forms the diagnostics time interval ta ()), the first trigger 10 is set to one by the signal of the counter 8, this second element And 13 opens. The codes of the simulator 1 signals distorted by the monitored receiver 18 from the converter 5 output are fed to the input of each of the n additional blocks 15, -15 comparisons, the second inputs of which are received through the keys 2, 2 codes corresponding to the signal distortions introduced by the monitored receiver 18, and There are certain malfunctions from the outputs of additional generators. At the end of the diagnostic time at the outputs of the corresponding counter 16i (-l6f, pulses, a signal appears that displays the executive command corresponding to the fault on the second indicator 12. Claims of the invention Device for monitoring the health of the receiver discrete information A matsin containing an input signal simulator, the output of which is the input of a monitored receiver of discrete information, the first and second indicators, characterized in that, in order to verify the validity of the control, a time generator of the control, a pulse shaper, and serially connected converter are entered; is the output of the monitored receiver of discrete information, the main unit of comparison, the counter, the output of which is connected to the input of the first indicator and the input of the forms The time of the diagnostics, and the first trigger, the main code generator, connected sequentially to the second trigger, whose input is combined with the input of the monitoring time generator and the trigger input of the input signal simulator, is the trigger signal input, and the first AND element, the second input and output connected respectively to the output of the main code generator and the second input of the main comparison unit, you the progress of the monitoring time generator is connected to the second input of the second trigger and the read input of the counter, the second element I, n additional comparison blocks, n pulse counters, the first and second inputs and outputs of which are connected respectively to the output of the clock generator pulses, with the outputs corresponding to axes additional comparison blocks and inputs of the second indicator, n keys, n additional code generators, the outputs of which are connected to information inputs of keys, control- I The luing inputs and outputs of which are connected respectively to the output of the first trigger and the first inputs n of additional comparison blocks, the second inputs of which are connected to the output The second element And, the first and second inputs of which are connected respectively with the output of the first trigger and the output of the converter form - code, the output of the clock pulse generator is connected to the second input of the first trigger.