SU1667242A2 - Counter fitness testing device - Google Patents

Abstract

The invention relates to a pulse technique and can be used as part of diagnostic devices, stands for monitoring the health of discrete blocks containing multi-digit counters. The purpose of the invention is to increase the reliability of the control of the counter - achieved by introducing trigger 5 controls and a group of 8 EXCLUSIVE OR elements. The device also contains an OR 1 element, an element 2, a reference counter 3, a diagnosed counter 4, a group of 6 elements EXCLUSIVE OR, a group of 7 elements AND, an element OR 9, a display unit 10, inputs 11, a clock input 12 and a reset input 13. The device additionally monitors the display unit 10 and the group of 7 elements I. 1 Il.

Description

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The invention relates to computing, can be used as part of diagnostic devices, stands for monitoring the health of discrete blocks containing multi-bit counters, and is an improvement of the device according to the authors. St. No. 1466007.

The aim of the invention is to increase the reliability of the control, which is achieved through the introduction of new design features that provide control of the display units and the group of elements I.

The drawing shows a functional diagram of the device.

The device contains the first element OR 1, element 1-g 2 of memory, ethnon counter 3, diagnostics counter 4, trigger 5 control, group 6 elements EXCLUSIVE OR, group 7 elements AND, additional group 8 elements EXCLUSIVE OR, second the element OR 9, the block 10 of the display, the input 11 records the signs of the involved outputs, clock input 12 and 13 reset

The output of the element OR 9 is connected to the perimeter input of the subject OR 1, the chimney of which is connected to the clock inputs of counters 3, 4, the outputs of which are connected bitwise with the first and second inputs of the corresponding elements EXCLUSIVE OR group B, the outputs of the elements EXCLUSIVE OR which are connected respectively to the inputs of elements And groups 7, the other inputs of the elements AND of which are connected to the outputs of the element 2 of the memory, the switches of the group 7 of the elements AND are connected to the inputs of the element OR 9 and with the first inputs of the elements EXCLUSIVE OR of the group 8, the second inputs of the elements Comrade EXCLUSIVE OR which is connected to the inverse output of the trigger 5, the installation input in O of which is connected to the input 13 of the reset and to the installation inputs in About the counters 3, 4 and element 2, the information inputs of which are connected to the input 11 of the recording of the signs of the outputs involved, clock input 12 connected to the second input of the element OR 1 and to the input of the installation in 1 of the trigger 5, the outputs of the elements EXCLUSIVE OR group 8 are connected to the inputs of the display unit 10.

Devices work as follows,

On a signal Reset on input 13, memory element 2, reference counter 3, diagnosed counter 4, control trigger 5 are set to the initial state and the LEDs of the block 10 are lit and see which LED is monitored

devices. The positional input of the involved outputs of the diagnosed counter 4, inputted at the inputs 11, is recorded in the memory element 2 a high potential with

its output, entering the inputs of the corresponding elements AND of group 7, prepares them so that the signals appearing at the outputs of the elements EXCLUSIVE OR of group 6 pass through the prepared elements AND of group 7.

For example, let us assume that the first output of the diagnosed counter 4 is not activated, then during the monitoring the signal appearing on the first output of the reference counter 3,

The 5th pass through the first element EXCLUSIVE OR from group 6 enters the input of the first element AND from group 7. Since its other input has zero potential, this signal does not pass to the output.

0 Consider the principle of operation of the device when controlling

During the monitoring, the pulse input 12 of the device receives pulses that are fed to the input of the reference counter 3,

5 diagnosed counter 4 and trigger 5 control. The first incoming pulse trigger control 5 is set to one, the LEDs go out and the device is ready for control. C signals

0 outputs of the reference and diagnosable counters bitwise are fed to the inputs of the elements EXCLUSIVE OR group 6. When the diagnosable counter 4 is operable, its outputs and outputs of the reference

5 of counter 3, the signals appear identical. Since these signals are momentarily fed to the inputs of the corresponding elements from group 6, the outputs of all the elements EXCLUSIVE OR group 6 appear zero potentials and the output of the second element OR 9 also has zero potential, which indicates about the health of the diagnosed counter.

In the event of a malfunction of the diagnosed counter 4, when the clock pulses arrive, the signals at its outputs and at the outputs of the reference counter 3 will diverge, as a result, at the output of any element EXCLUSIVE OR from the group

0 b high potential, which, passing through the element I of group 7 and the element EXCLUSIVE OR of group 8, lights the corresponding indicator 10 flea LED and, passing through the second element OR 9, enters the first input of the element OR 1 v - Vech there high potential, stops the passage of clock pulses. As a result, the faulty state of the dinosirr is fixed; , tgo counter 4,

the cause of the malfunction is analyzed and, if possible, eliminated, after which the fault is again given and monitored.

Claims (1)

The invention of the device control the health of the meter on the author. St. No. 1466007, characterized in that, in order to increase the reliability of the control, a control trigger is inserted into it, and the connection between the outputs of the group of elements And and the inputs of the ind0 block An additional group of EXCLUSIVE OR elements has been introduced, the outputs of which are connected to the inputs of the display unit, the outputs of the group of elements AND are connected respectively to the first inputs of an additional group of elements EXCLUSIVE OR, the second inputs of which are connected to the inverted output of the control trigger, the installation inputs 1 and O of which connected respectively to the clock input and the reset input.