SU754366A1 - Distributor monitoring device - Google Patents

Description

The invention relates to the field of automation and computing and can be used for circuit control of signal distributors.

A device for monitoring [ΐ], containing the elements AND, OR, NOT.

Its disadvantage is low noise immunity.

The closest in technical essence to the invention is a device for controlling the distributor [2 ^, containing the first and second elements OR and the first element AND, as well as the third element OR and the second and third elements AND, the element NOT and trigger.

The disadvantage of this device is reduced reliability and noise immunity. 20

The aim of the invention is to improve the reliability and noise immunity of the device.

This goal is achieved by the fact that in the proposed device, the outputs of the first AND elements are connected to the first inputs of the first OR elements, and the inputs to the first inputs of the second OR elements and the first inputs of the device, respectively. Second entry each 30

2

the subsequent first element OR is connected to the output of the previous first element OR, the second inputs of the subsequent first elements AND and 5 the subsequent second elements OR

connected to the outputs of the previous second elements OR. The outputs of the closing first and second elements OR are connected to the first input of the third ίθ element OR and to the input element NOT respectively. The second and third inputs of the third element OR are connected to the outputs of the second and third elements AND, respectively, the first inputs of which are connected to the corresponding trigger outputs, and the second inputs to the output and input of the element are NOT. The output of the third element OR is connected with the output of the device by the second inputs connected to the inputs of the third trigger.

The electrical circuit of the device shown in the drawing. It contains the distributor 1, the first, second and third elements OR 2,3 and 4, the first second and third elements AND 5.6 and 7, the elements NOT 8 and the trigger _9.

The device works as follows.

3

754366

Distributor 1 and trigger 9 are supplied from one of the second inputs of the device, the signal sets them to their initial state. After that, the signal at the outputs of the healthy distributor 1 and the first inputs of the device is missing, and at zero output of trigger 9 there is a signal one, which is fed to one of element inputs And 7. The device at this time controls the absence of signals at the outputs of the distributor

one. '

If in the initial state of the distributor a single potential appears on any of its outputs and on one of the first inputs of the device, then it will go to the input of the corresponding OR element. After passing through the series-connected elements OR 3, this signal will go to the other input of the element AND 7. Thus, at both inputs of the element AND 7 there are single signals, and thus a fault signal is generated. A single signal appears at the output of the device.

During the operation of the distributor 1, the triggering impulse comes from the corresponding second input of the device to another flow of the trigger 9, which goes into one state. During the operation of the distributor, single potentials appear successively at its outputs.

With the appearance of a single signal distributor at one of the outputs, this signal appears at the inputs of the elements OR 3 and AND 5, If during operation a signal appears more than ^ at one output of the distributor, then at. the output element And 5, connected to the output of the distributor, which appeared a false signal, a single signal. This signal through the corresponding element OR 2 connected to the output of the distributor, in which a false signal appeared, and the subsequent elements OR 2 will enter the input of the element OR 4 and will generate a fault signal at the output of the device. In the event of a malfunction of the distributor 1, which is characterized by the disappearance of the single signal at one of the outputs, the output of the corresponding element OR 3 will produce a zero signal, which through the successively connected subsequent elements OR 3 will go to

input element is NOT 3, from which after

invert it enters on one

from the inputs of the element And 6, on the other

the input of which there is a single signal from the single output of the trigger 9.

In this case, a fault signal is generated through the OR 4 element at the device output.

The use of the invention allows. improve the noise immunity and reliability of the device by reducing the number of connections of the controlled valve to the control device.

Claims (1)

Claim Device for controlling the distributor, containing the first and second elements OR and the first element AND, as well as the third element OR and the second and third elements AND, the element NOT and the trigger, characterized in that, in order to increase the reliability and noise immunity of the device , in it, the outputs of the first AND elements are connected to the first inputs of the first OR elements, and the inputs to the first inputs of the second OR elements and the first inputs of the device, respectively, the second input of each subsequent first OR element is connected to the output of the first first element OR, the second inputs of the subsequent first elements AND and the subsequent second elements OR are connected to the outputs of the previous second elements OR, the outputs of the first and second elements OR are connected to the first input of the third element OR and to the input of the element NOT, respectively, the second and third inputs of the third element OR are connected to the outputs of the second and third elements AND, the first inputs of which are connected to the corresponding outputs of the trigger, and the second inputs to the output and input of the element are NOT, respectively, in the output of the third element OR is connected to the output of the device, the second inputs connected to the trigger inputs. '