CN2037765U

CN2037765U - Time puzzle-lock controller

Info

Publication number: CN2037765U
Application number: CN 88214070
Authority: CN
Inventors: 贾云得; 马宝华
Original assignee: Beijing Institute of Technology BIT
Current assignee: Beijing Institute of Technology BIT
Priority date: 1988-09-23
Filing date: 1988-09-23
Publication date: 1989-05-17

Abstract

The utility model discloses a time puzzle-lock controller which belongs to an electron coded lock field. The utility model carries out a work with a single chip computer as core, and has the function of recognizing whether entering a warning area is legitimate or not. The function is similar to the existing electron coded lock. The difference is that the code of the time puzzle-lock controller is a time code composed of three-group double figures (units: seconds) produced stochastically by the single chip computer. If in the predetermined time code, a ' request for entering ' key operation can enter the warning area lawfully according to a prescriptive operating program, otherwise the user is treated as illegal intruder, and a sound and light alarm is carried out.

Description

Time puzzle-lock controller

The utility model belongs to the electronic password lock field.

Existing electronic password lock generally all is button or dial-type coded lock, and its password is to be formed by plurality of keys or the different permutation and combination of dialling reel number.Button is many more, and privacy degrees is high more, and for the electronic password lock of six passwords of eight keys, the password number of formation is A ⁶=20,260.The MDS-1 type electronic password lock of technical prevention office of Beijing Municipal Bureau of Public Security development just belongs to the keyswitch type electronic coded lock, and this password locks in the ministerial level evaluation by country in 1988.The obvious weak point of this class coded lock is that button is many, and complex circuit, cost height, secrecy are low, easily go to pot, and is difficult to unblank after going to pot, is difficult to repair.The time password lock is at above not enough proposition of existing password lock.The password of time password lock is to be become by three groups of arrays that one-chip computer produces at random, and it is the time of second that each group number is represented a unit, and span all is 00-59, and three groups of numbers constitute a time password.Time password lock button has only one, is called " request enters " operated key.If time password is to be become by three groups of arrays, then presses three keys and can finish once-through operation.If consider factors such as clocking error and operate miss, the error of setting each time is 2 seconds, time value such as 11 seconds, consider that the time value after the error can be 10.5～12.5 seconds, promptly operation push-button all can be considered effective words between 10.5～12.5 seconds, and all there are 30 kinds of possible values each time.Because the value of three times is separate, therefore three time values can be combined into 30 ³=27,000 password.The random time password also can be made up of the time more than three, and the time password number of 4 time values is 30 ⁴=810,000.This shows that the time password latching operation is simple, privacy degrees is very high.And " request enters " operated key can be controlled device with coded lock and separate, and can make coded lock exempt from destruction like this, if button goes to pot, then can replace ruined button by other " switch " mode.

The present invention adopts following technical scheme and design philosophy to realize its goal of the invention:

One-chip computer is the core of coded lock control device.Three group of two figure place ab, cd, ef that one-chip computer produces at random were defined as for first, second, third time respectively, and span 00-59 unit is second.Abcdef forms a time password.This password is deposited in the one-chip computer.Time password also can artificially be selected by hand switch.

The CTC of one-chip computer is operated under the timer mode, and finish timing routine and display routine by tally function, form the electronic timepiece of a standard, for time password provides the reference time, electronic timepiece must be placed on outside the security area, if can not be placed on the outside, can replace by a commercial electronic watch, just need make this electronic watch and monolithic processor controlled electronic timepiece keep time synchronisation by hand switch.Use the benefit of commercial electronic watch to be and to carry,, and can exempt from destruction like the key that opens the door.

Operating personnel send the signal of " request enters " by " request an enters " key to one-chip computer, after single-chip microcomputer received " request enters " signal first time, the time that this signal is taken place checked immediately.If the time of taking place is a b second, wait for that then the signal of " request enters " occurs for the second time; If the signal of " request enters " occurs in c d second for the second time, continue then to wait for that the signal of " request enters " occurs for the third time; If the signal of " request enters " occurs in e f second for the third time, will produce and allow the legal sound and light signal that enters, obtain just can legally entering the security area behind this signal.This signal can be used as the enabling signal of electric lock, also can be used as the enabling signal of electric door.

For normal running person, if operating mistake will obtain the sound and light signal of an operating mistake.At this moment, the operator must press " request enters " key, sends " operation again " signal to single-chip microcomputer, just can be again to single-chip microcomputer transmission " request enters " signal until the sound and light signal disappearance of operating mistake.Again Cao Zuo number of times surpasses the number of times of regulation, and then single-chip microcomputer will be rejected the signal of any " request enters ".

When monolithic processor controlled timing electronic watch was placed on outside the security area, its timing numerical value can be from 00-99, and the demonstration of each numerical value can continue for 2 seconds, and like this, the password number of three groups of number formations is 100 ³=1,000,000.

In addition, this controller is the alarm of a platform independent still, has functions such as anti-theft fireproof, and the utility model extensively location is used for critical positions such as family, bank, also can be used on the secret instrument such as senior safety cabinet.

The utility model example is as follows by description of drawings:

What accompanying drawing showed is time password lock controller circuit diagram.

Controller is by MCS48 single-chip microcomputer 1, display interface circuit 2, and button drive circuit 5,6,7,8,

sensor interface circuitry

9,10,11,12, the drive circuit G of executing agency forms.MCS48 single-chip microcomputer 1 is this heart part of entire controller.The generation of time password and storage, the generation of electronic timepiece time all are to be finished by the software of this single-chip microcomputer support.Single-chip microcomputer 1 receives from sensor S by input interface PI ₁, S ₂, S ₃, S ₄, operating key K ₁, K ₂, K ₃, K ₄Signal, handle the decision output signal and the way of output by analysis.The mechanism of entire controller is as follows:

After controller powers on, the 3 automatic demonstration times of charactron (unit: second), by hand switch K ₄With commercial electronic watch time synchronisation.

Push switch K ₃, charactron 3 shows first, second, third time of time password successively.Push switch K ₂The numerical value of select time password artificially.

Release-push K ₃, show that this moment, the staff must withdraw the security area immediately recovery time.The time of withdrawing can not surpass 5 minutes, and after 5 minutes, the time password lock controller is in warning defence state.

If there is the people to swarm into the security area, sensor S ₁Effect is sent into single-chip microcomputer through resistance R 1 and photoisolator 9, and single-chip microcomputer passes through PI ₄After mouth receives signal, carry out sound and light alarm by acousto-optic indicator board 4.If continue to swarm into, single-chip microcomputer is to PII ₆, PII ₇, send signal, relay J ₁, J ₂Adhesive simultaneously acts on executing agency effectively, stops the intruder to continue to swarm into.

The competent person enters the security area must show that the very first time presses " request enters " key K at clock ₁, when showing for second time, press " request enters " key K ₁, when showing for the 3rd time, press " request enters " key K ₁, can obtain the legal sound and light signal that enters the security area, this signal can be used as the start signal of electric lock.If obtain the operating mistake signal, must press " request enters " key till the operating mistake blackout.Then operate again.

Illegally enter the security area personnel and do not know the time password value, must cause operating mistake, when reaching more than 5 times as if operating mistake, single-chip microcomputer will be rejected the input signal of any " request enters ".

The utility model has following advantage:

1, simple to operate, the privacy degrees height.

2, has antitheft, fire-proof function.

3, can stop and delay the generation of the event of stealing.

4, simple in structure, cost is low.

5, survivability height.

Claims

1, the time password lock controller is by one-chip computer, sensor interface circuitry, the button drive circuit, executing agency's drive circuit, compositions such as display interface circuit, it is characterized in that: three groups of double figures that the password of time password lock controller is produced at random by single-chip microcomputer (unit: second) form, and be defined as first respectively, second, the 3rd time, this time reference point is provided by monolithic processor controlled timing electronic watch or commercial electronic watch, the Password Operations key is only one on " request enters " key, show first in the electronic watch order, second, during the 3rd time, press once " request enters " key respectively, can obtain the legal signal that enters the security area.

2, time password lock controller according to claim 1, it is characterized in that: when monolithic processor controlled timing electronic watch is placed on outside the security area, the scope that numerical value shows can be from 00-99, the demonstration of each numerical value sustainable 2 seconds.