SU1414958A1 - Electronic interlock - Google Patents

Abstract

The invention relates to a technique for protecting various objects from unauthorized access, in particular to electronic locks. The purpose of the invention is to increase secrecy. The electronic-code lock is designed in the form of an electronic key and lock. The code combination is set in the code setting unit 5 and in the additional code setting unit 11. By means of the switch 17, the time at which the user must press the switch is set. When the code combinations coincide and the right moment of switching on, the execution unit 8 is triggered. f-ly, 1 ill. S (L with sd 00

Description

The invention relates to a technique for protecting various objects from unauthorized access, in particular to electronic locks,

The purpose of the invention is to increase secrecy by making it more difficult to select a code.

The drawing shows the functional diagram of the proposed device.

The electronic locking device contains a generator 1, a counter 2, a control unit 3, a pulse distributor 4, a code setting unit 5, a decoder 6, an indication unit 7, an execution unit 8, a connector 9, an electronic lock 10, an additional code setting unit 11, a circuit 12 , a code converter 13, an electronic lock control means 14, an electronic key 15, an additional distributor 16 pulses, an interpreter 17, an And 18 element, a Schmitt trigger 19, an RS flip-flop 20, control switches 21 and 22.

The device works as follows. ,

The user presses the switch 21 Open. at that moment when on

A digital indicator 7 shows the number (from 0 to 9) that was set in advance using switch 17. This leads to the triggering of the Schmitt trigger 19 and, in turn, to the triggering of the coincidence circuit, the output signal of which translates the RS flip-flop into one state, and corresponding to opening the key 15 and passing

output pulse code at the output

40

slot 9, Used in the Schmitt trigger 19, prevents it from firing when the button is pressed continuously, i.e. for any additional code, and having the duration of the output pulse ds to about 0.3-0.5 s, allows you to find the specified number.

It is known that the time of the relay and the person is about 0.2-0.3 s, so the user can easily produce an operation to open the lock. The user sets the code in the code setting block 5, in the additional code setting block 11 and control unit 3 by way of pmmmling the contacts of the switch 17. When using, the mating parts of the connector are combined. The pulses of the generator 1, the passage through the distributor .4 and block 5 installation code.

Q

0

0

five

0

with

g

form a sequence of pulses with a given code, which are then converted into a parallel code in the converter 13. The comparison circuit 12 compares the previously set number with the number received at the input from the output of the converter 13. With the equality of these numbers at the output. Comparison circuit 12, signal 1 arises, which triggers the execution unit 8 and provides access to the room. If the number is different in at least one bit, O will be output at the digital comparator output, and the actuator will not. it works.

Thus, the necessity of dialing the code and starting the device at a certain moment allows to significantly increase the secrecy of the lock.

Claims (2)

1. An electronic locking device containing a generator, a counter, the outputs of which are connected to the inputs of the decoder, a pulse distributor, a code setting unit, a control unit, an ISC1I block, and an execution unit, which, for the purpose of privacy, has a connector and executed in the form of an electronic lock containing an additional code setting unit, a comparison circuit, a code converter and control means for an electronic lock containing an electronic key, the first output of the generator connected to the inlet The house of the counter, the decoder is connected to the inputs of the display unit, the second generator output is connected to the control unit input, the output of which is connected to the key control input, the third generator output is connected to the pulse distributor whose outputs are connected to the corresponding code setting unit inputs, output the code setting unit is connected to the information input of the key, the output connected to the input of the code converter via an electrical connector, the code converter outputs are connected to the first group of circuit input cf vneny to the second group of inputs connected to the comparison circuit outputs the additional code setting unit to output scheme J14 We are connected to the input of the executive unit. 2. The device according to claim 1, which is a block in that the control unit contains an additional pulse distributor, a switch, an element I, a Schmitt trigger, an RS trigger, control switches, and the input of the additional distributor is connected to the input of the unit control, and the outputs of the additional distribution 14958 bodies - to the corresponding fixed contacts of the switch, the movable contact of which is connected to the first input of the I element, to the second input of which through the I1mitt trigger is connected the first activation switch, the output of the AND element is connected to the S-input of the trigger, the second is connected to the R-input of control switch, and the output of the trigger - the output of the control unit.