SU410442A1 - - Google Patents

Description

one

The proposed device for testing transducers. The alarm code can be used in automation and computer systems, in particular, in testing, checking and investigating the reliability of transducers.

The known testing devices include an angle-to-code converter connected through a distributor to the impulse generator, an error detection unit, a trigger and a valve, the inputs of which are connected to the trigger and the pulse generator, and the output connected to the pulse counter.

The backlog of known devices is to register errors without dividing them into dependent and independent ones. Meanwhile, the processing logic of the output V-code, in which the value of an arbitrary bit of the corresponding binary code is determined by the value of the previous bit and the values of the sub-bits on a given clock cycle, causes an error in one or several subsequent bits if there are errors in the previous bit. de.

For statistical investigations of converter faults, it is necessary to determine the number of dependent errors, links to codes and bits, the relationship between dependent and independent errors, etc.

In the proposed device, in order to improve the accuracy of checking the converters, an AND scheme has been introduced into the error control circuit, the outputs of which are connected to the discharge bits of the converter, and connected to its output

single trigger input.

The drawing shows a diagram of the proposed device.

The converter 1 under test is mounted on the motor shaft 2. The converter inputs are connected to the valve 3 connected to the pulse generator 4, and the outputs are connected to the error detection unit 5 and to the circuit "AND 6. The circuit" 6 is connected to the single trigger input 7, and block 5 - with iul input

trigger The output of the trigger 7 through the valve 8, connected to the pulse generator 4, is connected to the counter 9.

When the device is in operation, any failed bit will invert the subsequent

bits until the survey reaches the bit with the same subcategories.

The inputs of the converter "angle - code 1 receive consecutive pulses from

distributor 3. Promotion of impulses in

the distributor is driven by a generator

4. Converter errors are monitored.

an error detection unit 5.

In the event of a converter malfunction

trigger 7 is signaled by block 5 to a state in which valve 8 opens and filling in counter 9 begins. Upon completion of the flow of dependent errors, i.e., if the values of both bits are equal, the signal from the AND 6 circuit triggers 7 to the initial state and the filling of the counter is stopped. The counter code will determine the number of dependent errors.

Subject invention

Device for checking converters "angle - code, containing its engine, kinematically connected to the test inverter, whose inputs through the distributor are connected to the output of the pulse generator, the outputs of the discharge bits of the converter through the error detection unit and zero trigger input - to one input of the circuit" And the other input of which is connected to the output of the generator of pulses, and the output is connected to a pulse counter, which is different in that, in order to improve the accuracy of the device, an additional scheme “And And what are the outputs of the converter bits connected to the inputs of the additional AND circuit, the output of which is connected to a single trigger input.

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