SU1492006A1 - Device for controlling electromagnetic lock - Google Patents

Abstract

The invention relates to a technique for protecting various objects from unauthorized access, in particular, to electromagnetic locks, and makes it possible to increase the reliability of the lock. When the power is turned on via the reset unit, the circuit is reset. When applied to the free input of the trigger 7 pulse, the indicator 4 lights up and the transistors 12 and 13 open. The transistor 19 closes and the transistor 20 opens. When the lock (object) is opened, the limit switch 2 is activated, while the trigger 17 is triggered and the trigger 18 is transferred to another state. Shaper does not work. When the object is closed, the switch 2, the trigger 18 and the driver 6, which brings the circuit to the initial state, are triggered. 1 il.

Description

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ABOUT)

(see) the use of (hsi gs to the trichnik protection of various (lOiif KToii from access by outsiders jiiiii, in particular to chamkami.

The aim of the invention is to improve the reliability of the system (T).

In drawing Gokokatang functional diagram of the device - ugranleni.

The device contains a winding of the electromagnet 1, end off K1: t}; 2, power supply 3, indicator D, contact ground 5, fs, 6 i-pulses, RS-trigger 7, e; NOT 8-11, transistors 12 and 13, resistors 1A-16, RS-flip-flop 17, D-flip-flop 18, additional jCliteJInY transistor. 1 19 and 20, additional resistors 21 and 22 and block 23 reset.

The device works as follows.

When the thread is turned on, the reset unit 23 generates a short pulse which sets a low level on the output de D-flip-flop 18, which, having passed through the shaper 6, sets a high initial level at the output of the RS flip-flop 17. When applying a control signal to freedom} 1 pin 1 input of the RS flip-flop 17 at its high end, the operating level is low. It is through the element NOT 9, it concentrates on the output of the element NOT 10 and ensures the flow of current through the indicator 4,

SRI front signal (transition from 1 and O). When closed, the crawler 011YAT-1- interacts with: switch-off 2, T1) iger 7 again, it is triggered and the trigger 18 is set to zero. The output of the former 6 appears with a pulse, which leads to the starting state.

Q At the output of the HE elements 8 and II, a low level appears, blocking the transistor 13. The lock closes. At the output of the HE 10 element, a high level appears, bridging the transistor 12 and the unlocking transistor 19, which in turn locks the transistor 20. At the moving contact of the switch 2, a high level appears to which the trigger 1 7 does not react. The circuit returned to its original state.

Claims (1)

Claims The electromagnetic lock control device, comprising an electromagnet winding, a limit switch, a power source, an indicator, a contact group, a pulse shaper, an RS-flip-flop, NOT elements, transistors, resistors, the power source connected to one pole with a common wire, the pulse shaper output connected to one of the inputs of the RS flip-flop, the output of the cat-orog-o is connected to the input of the first element NOT and through the connected follower5 contact group 5 and a resistor 14; 35 the second and third elements are NOT - with,. the voltage drop on it, which is one of the conclusions of the first resistor and the swarm opens the transistor 1 2, which creates the first transistor by the emitter, the base at the output of the HF 1 1 element is high, which is 1.1 which is connected to the second output of the first resistor, through the first pair 40 the contacts of the contact group with the first output of the indicator, the second end of which through the second pair of contacts of the contact group is connected to the power source, the collector of the first the level at the output of the element HE 8 opens the transistor 13. The low level of the element HE 10 through the resistors 14 and 21 closes the transistor 19, which allows the transistor 20 to open. Thus, ia the movable contact of the transistor 45 is connected to the quadruple switch 2, the working of the low element HE appears through both the second level, the power supply sysor, the outputs the first and fourth elements are NOT connected to the base of the second transistor and through the third resistor with the power source, the collector of the second transistor is connected to the power source through the latching winding, and the emitter is connected to the common wire, characterized in that in operation, it contains dorIOJnu rs-flip-flop, D-flip-flop, add-on transistors, do-11o-n {ti-resistors and a reset unit, Opening the lock for a lock (not shown), the operator makes a slight backward movement, and the lock eye, interacting with the drawer 2, switches to the ei-o contacts, which trigger the trigger 17, the output of which translates the trip -op 18 in single c-stop. The pulse shaper when it does not work, because it regulates only at the rear55  the second and third elements are NOT with,. one of the findings of the first resistor and the emitter of the first transistor, the base which is connected to the second output of the first resistor, through the first pair the contacts of the contact group with the first output of the indicator, the second end of which through the second pair of contacts of the contact group is connected to the power source, the collector of the first the transistor is connected to the input of the fourth element NOT and through the second pe51 / -. Moreover, the former is now (d jerwitch; an additional pe HicTojia with oodingn with a base of the main TpaicuicToiia; .1M, and the collector - with the base of the second additional backward transistor and through the second 10-pulse, inverse output to the D input additional resistor p - from source-1) -trigger, output of reset unit by power switch, emitter of the second auxiliary; -chan to K-input 1) -trigger. teline transistor connected to both wire, 1 K (main collector - main contact contact from h1.1klk1gglnn, mmkanniy and closing | tions of which, respectively, 11 (1dklyucheny to the R- and S-inputs of the pre-attenuating N.CH-trigger, output connected to the C-trigger of the D-flip-flop, the direct output of which is connected to the driver input