SU1226397A2 - Device for measuring actutation time of electromagnetic components - Google Patents

Abstract

The invention may be used to control parameters such as relay solenoid valves. The purpose of the invention is to increase reliability in operation. The device includes a button I, a winding of an electromagnetic element 2, a differentiating chain 3, an element OR 4, a trigger 5, an electronic key 6, a pulse counter 7 and a generator 8 of pulses. Introduction to the device of the OR element and pulse generator and their connection with the elements of the device eliminates the influence of the bounce of the button contacts. 1 il.

Description

I

The invention relates to a measurement technique, can be used to control the parameters of electromagnets, in particular electromagnetic valves, relays and other devices with an electromagnetic drive, and is an improvement of the device according to the author. St. No. 809038.

The purpose of the invention is to increase the reliability of the device by eliminating the influence of the chatter of the button contacts.

The drawing shows a functional diagram of a device for measuring the time of operation of electromagnetic elements.

The device for measuring the response time of the electromagnetic elements contains in series the winding of the electromagnetic element 2, the differentiating chain 3, the element OR 4, the trigger 5, the electronic key 6 and the pulse counter 7, and the pulse generator 8, the output of which is connected to the second input of the electronic key 6 and shaper 9 pulses, the input of which is connected to the winding input of the electromagnetic element 2 and the second trigger input 5, and the output of the shaper 9 pulse switch-Fen to the second input element And And 4.

The device works as follows.

Before starting, the trigger 5 is set to its initial state (the installation circuits are not shown in the drawing). At the same time, the electronic key 6 is closed, and a low level signal is set at the outputs of the imaging unit 9 and fibers and differentiating chain 3.

When a voltage is applied to the winding of the electromagnetic element 2, the trigger 5 is activated, which leads to the opening of the electronic key 6. In this case, the counter is filled

7 impulses from generator

8 pulses. At the same time, the pulse shaper 9 generates an output signal that closes the element OR 4 for a time determined by the inequality

n A.

2Lg L i L j.

tnax (1 Mm

where is the maximum time of the core i contactless button 1

0

263972

C is the duration of the output pulse of the imager 9;

.S the minimum response time of the electromagnetic element.

The increasing current passing through the winding of the electromagnetic element 2 creates at the output of the differentiating chain 3 and, consequently, at the output of the element OR 4, a high potential that does not change the state of the trigger 5. At the moment the button 1 is turned on, a series of pulses is possible those. bounce; a series of pulses also appears at the output of the differentiating chain 3, however, it does not change the state of flip-flop 5, since at this time the OR 4 element is closed by the output signal of the shaper 9. When the core of the electromagnetic element 2 moves, the current in the winding is 1 less than differentiating chain 3 appears low potential. Negative differential also does not change the state of trigger 5. At the moment of stopping the core of an electromagnetic element, the current through it, the winding again begins to increase at the output of the differentiating chain 3, and consequently, a high potential appears at the output of the OR 4 element. A positive voltage drop returns the trigger 5 to the initial state, 5 In this case, the electronic key 6 is closed, and the number of pulses corresponding to the response time of the electromagnetic element is stored in the counter 7 of pulses until it returns to its original state before starting a new measurement.

five

Claims (1)

Invention Formula A device for measuring the response time of electromagnetic elements according to the author. St. No. 809038, distinguished with. so that, in order to increase reliability in operation, an OR element and a pulse shaper are inputted into it, the input of which is connected to the winding input of the electromagnetic element, and the output of the pulse shaper through the OR element. connected to the first trigger input, while the second input of the OR element is connected to the output of the differentiating chain.