SU1641963A1 - Electronic combination lock - Google Patents

Abstract

This invention relates to locking devices. The purpose of the invention is to increase the secrecy and reliability of the electronic code lock. For this, the control unit 1 of the electronic code lock is made of conductive material, is mechanically connected to the vibrator 8 electrically - with the sensor block 9. The lock uses the touch control principle, which is carried out by hand touching the control element 1, and the generator of 2 pulses is turned on. The control of the entered code is made by the person's feeling of mechanical vibrations, the number of which must be equal to the digit of the code currently being entered. For an outside observer, there are no signs of the input code. The frequency of the pulse generator 2 varies randomly within the prescribed limits, which eliminates the determination of the code by the time of contact of the control element. 1 il.

Description

sc

s

h with

The invention relates to electronic lock locks and can be used to protect various objects from unauthorized persons.

The purpose of the invention is to increase the secrecy of the electronic code lock.

FIG. 1 shows a block diagram of an electronic code lock.

The electronic code lock consists of control element 1, a generator of 2 pulses, a switch of 3 meters, a block of 4 meters, a block of 5 decoders, a coincidence circuit 6, an actuator 7, a vibrator 8, a sensor block 9, a timer unit 10 and an installation panel 11 code. The control element 1 is made of a conductive material and is mechanically connected to the vibrator 8, and electrically to the sensor block 9.

The device works as follows.

When the power is turned on, the timer unit 10 generates a Reset signal, setting the counter switch 3 and the counter unit 4 to the initial state, then this signal is periodically repeated. To enter the code, it is necessary to touch the control element 1 with a hand, while the output of the sensor block 9 is a signal that permits the operation of the pulse generator 2 and prohibits the operation of the timer block 10, i.e. during the dialing of the code, a reset signal is not generated at the output of the timer block.

The pulses from the output of the generator 2 are fed to the input of the vibrator 8, which is mechanically connected with the control element 1, thereby controlling the input code. At the same time, the pulses from the output of the generator 2 are fed to the input of the counter switch 4. In block 4, the counter is entered in the number of pulses, respectively, in the first digit of the code. Then you need to briefly withdraw your hand from control element 1, the signal at the output of the sensor unit 9 disappears, the operation of the pulse generator 2 is disabled, the operation of the timer block 10 is enabled, but if the time until the next contact of control element 1 does not exceed the specified one, the reset signal at the output timer 10 is not formed. At the next contact of the control element 1, the pulses from the output of the generator 2 due to the counter switch 3 arrive at the second input of the block 4 of meters, i.e. The second digit of the code is dialed. Similarly, all subsequent digits are dialed. The dialed code is fixed by a block of 4 meters. The signals from the outputs of the block 4 of the counters are converted by the block 5 of the decoders into a convenient form, for example, from a binary code to a decimal, and are sent to the code setting panel 11, with which the lock code is preset, is that the inputs of the coincidence circuit 6 are connected with certain outputs of the block of 5 decoders. As a result, with the correct set of code at the output of the coincidence circuit 6, a signal appears that actuates the actuator 7, the door guarded by a lock (or other device) can be opened. From the output of the actuator 7, a feedback signal arrives at the second input of the timer unit 10, while the operation of the timer unit 10 is prohibited. In order to start the lock, it is necessary to open and close the door protected by it, the feedback signal from the output of the actuator block 7 disappears, the timer block 10 generates a Reset signal that brings the counter switch 3 and the counter block 4 to the initial state. The signal at the output of the coincidence circuit 6 disappears and the actuator 7 locks the door.

If the code is not correctly entered, the signal at the output of circuit 6 does not form, the actuator 7 does not work, and after a specified time, after the control element 1 stops touching, the timer unit 10 sets the counter 3 switch and the counter block 4 to its initial state.

In order to exclude the definition of the input code by the contact time of control 1, the pulse generator 4 is designed in such a way that its frequency varies randomly within specified limits.

Claims (1)

Invention Formula An electronic lock with a control element, a pulse generator connected in series, a counter switch, a block of counters, a decoder block, a code setting panel, a matching circuit and an actuator, an input code indicator whose input is connected to the output of the pulse generator, characterized in that in order to increase secrecy, it contains a sensor unit and a timer unit, and the indicator of the input code is made in the form of a vibrator mechanically connected to a control element whose output is connected n to the input of the sensor unit, the output of the sensor unit is connected to the input of the pulse generator, to a first input of the timer unit and to the second input of the switch counter, a timer unit connected to the output 516419636 the installation inputs of the switch and the measure unit, the decoder unit being connected to the counters, and the actuator output with the coincidence circuit through the device panel connected to the second input of the secret block. novki code.