SU741206A1 - Device for testing pulse counters - Google Patents

Description

This invention relates to electrical measuring technology.

Devices are known for determining the time of the beginning and end of the generation of 5 control pulses, comprising a pulse generator connected to a trigger and, via element I, to a binary counter connected to a trigger, a binary, and a binary decoder 1. 16

A disadvantage of the known device is the impossibility of performing verification of counting accuracy, controlling the minimum and maximum amplitudes of pulses.}

A device for calibrating electromagnetic pulse counters is known, comprising a sensor, square pulses, a control unit, an exemplary pulse counter, an amplitude meter 2 (i pulses and a reference voltage switch 2.

The disadvantage of such a device is low calibration accuracy.

The purpose of the invention is to improve the accuracy of verification.

This is achieved by the fact that in a device for calibrating electromagnetic pulse counters containing a sensor of rectangular pulses, the first jO

the output of which is connected to the exemplary pulse counter, the second output to the pulse amplitude meter input, and the third output to the rotatable electromagnetic pulse counter input, the reference voltage switch connected to the pulse amplitude meter, and the control unit consisting of the trigger pulse selector control and switch of the type of work, output of a turnable electromagnetic pulse counter through the switch of the type of work is connected to the input of the Stop of the control trigger, the output connected to one of the pulse selector rows, the other input of which is connected to the output of the sensor square wave, and an output switch through kind works - with sensor input rectangular pulse.

The drawing shows the block diagram of the device.

Claims (2)

The device comprises a square pulse sensor 1, which includes a master oscillator 2, a pulse shaper 3 and an output amplifier 4 control unit 5, which contains a pulse selector 6, a control trigger 7 and a work switch 8, a reference voltage switch 9, a pulse amplitude meter 10, an exemplary counter 11 and an electromagnetic rotatable counter 12 pulses. The device works as follows. The master oscillator 2 generates triggered pulses of short duration, positive polarity and the necessary tracking frequency, arriving at one of the inputs of the selector 6. A device for calibrating electromagnetic meters starts working when the Start button is pressed, as a result of which a control trigger 7 is triggered and opens the selector through the other of its inputs. From the output of the selector, inverted triggering pulses through a switch 8 of the type of operation of the driver of 3 pulses produced on the basis of the seeking multivibrator with emitter coupling, the output pulses of the driver are counted by an exemplary counter 11 and simultaneously through the output amplifier 4, where they are amplified to the amplitude required for calibration , are fed to a rotatable counter 12. Amplitude meter 10 compares the amplitudes of voltage pulses coming from the other output of the output amplifier and proportional to Momo current in an electromagnetic counter with a selected one of two switch 9 voltage DC, The corresponding boundary values m rabocheg current for power metal emogo counter 12 and provides light indication optionally sary current amplitude. The device stops with, depending on the type of verification by a pulse from the executive output of a rotating counter, connected via switch 8 to the Stop trigger input 7, after counting the previously set number of pulses or by pressing the Stop button. As a result, the trigger closes the selector b, stopping the admission of the trigger pulses of the master oscillator 2 to the input of the former 3. The sample counter 11 reads are set to O by applying a negative reset voltage to the decatroin counter when the Reset button is pressed. For operation of the device in the mode of issuing single pulses, it is pressed .. The Single start button is connected by switch 8 to the input of the imaging unit 3 and causing its single triggering. Apparatus of the Invention A device for calibrating electromagnetic pulse counters, comprising a square pulse sensor, the first output of which is connected to an exemplary pulse counter, the second output is connected to the input of a pulse amplitude meter, and the third output is connected to an input of a turnable electromagnetic pulse counter, a reference voltage switch, connected to a pulse amplitude meter, a control unit consisting of a pulse selector, a control trigger, and a switch of operation, characterized in that, in order to verification accuracy, the output of a rotatable electromagnetic pulse counter is connected to the Stop input of the control trigger, the output of which is connected to one of the inputs of the pulse selector, the other input of which is connected to the output of the square pulse sensor, and input sensor for rectangular pulses. Sources of information taken into account in the examination 1.Pressman A.I. Calculation and design of circuits on semiconductor devices for digital computers. M., Energie, 1963, p. 39 2. Technical conditions for verification of electromagnetic meters, TU 04.0130, 73. - prototype. I + Epte S, - and max  -t / MUH