CN2043658U

CN2043658U - Theft-defence cipher device

Info

Publication number: CN2043658U
Application number: CN 88221642
Authority: CN
Inventors: 曹新谱
Original assignee: Individual
Current assignee: Individual
Priority date: 1988-12-29
Filing date: 1988-12-29
Publication date: 1989-08-30

Abstract

The utility model relates to a theft-defence cipher device, which is composed a system power supply, a switch, a comparing control part, an automatic alarm and time keeping part and an automatic opening part. The utility model is characterized in that the device has the function of repeated opening proof, and the code can be conveniently input from a pre-set code in a cipher card or input from outside. The utility model, which has the advantages of simple structure and high property-to-price ratio, is suitable for the theft protection safety device for various facilities, such as strongboxes, security rooms, coffers, storehouses, households, etc.

Description

Theft-defence cipher device

The utility model belongs to the dynamo-electric anti-theft device of a kind of machinery and the dual control of password, can be used as the burglary insurance device of facilities such as various safety cabinets, strongbox, secret chamber, national treasury, warehouse and family.

Present burglary insurance device is divided into pure mechanical, mechanical cipher class, electronic cipher class substantially.Patent application CN86204788 is exactly a kind of electronic cipher anti-theft device.This device is made of power switch, automatic turned parts, comparison control assembly, alarm, transformation generation of static electricity device.Though this device has antitheft and automatic warning function, because password is difficult for remembeing or remembers inaccurately, make the error rate of unlatching many, make troubles to the user.This device does not prevent the repetition open function in addition, as long as the robber has time enough crime, can be at this moment between in repeat to check the number repeatedly, make and open success rate and improve greatly.

The utility model compares control part by system power supply, switch, and open portion is reported to the police and timing portion composition automatically automatically.Relatively control by logic alternative route, open control circuit, user's presetting cipher parts, foreign key input block and form.Automatically open portion is made up of electromagnetic switch, open control circuit and mechanical switch.Come then when " the unlatching control signal " that compare control part, its open control circuit is worked, and inhales moving safety plug action by electromagnetic coil, draws back insurance, lights indicator lamp simultaneously.The user presses door open knob, and pushing up back main latch can the device for opening gate.Automatically warning is made up of trigger, alarm, the bistable circuit with " error log " function, autotimer, internal electric source, clock with timing portion.In case outside input code mistake, send control signal, drive this part line work by control part relatively.At first note " makeing mistakes ", trigger alarm equipment alarm, count automatically simultaneously by bistable unit.Counter is to surpass the scheduled time (this time can be set several minutes to tens of minutes) when time of fire alarming, sends control signal, turn-offs alarm.When gate time " when preventing repeating within the opening time (optional selecting several minutes to tens of hours of this time), was keeping for one " forbidding start signal ", controlling opening section, can not open in the time of setting.Have only above " anti-repetition opening time " system and just cancel " forbidding opening signal ", recover normal condition.

User's presetting cipher parts and foreign key input part are formed by password card, photosensitive circuit and light source, and the password of two password cards and two groups of photosensitive circuits are in full accord.User's presetting cipher parts are directly linked and are patrolled than in the circuit, and the user can set presetting cipher arbitrarily by changing the password card.The foreign key input part is also directly linked and is patrolled than in the circuit, inserts the password card by opening the people, and the input password is to patrolling than comparing judgement in the circuit.When the password card inserts the foreign key input part, can start light source and photosensitive circuit, password is opened in input.If it is inconsistent to open password and presetting cipher, then system judges " makeing mistakes " and writes down this information, and system enters alarm condition automatically, reports to the police automatically and self-clocking.If it is consistent with presetting cipher to open password, then system opens automatically.

The utility model replaces foreign key input block and user's presetting cipher parts with the array contact switch, and directly link open control circuit, replace with 74LS113A simultaneously and patrol as hereinbefore than circuit, remaining part, structure, then can constitute low-cost system, be specially adapted to the home security safeties.

The utility model only needs properly to preserve the password card, and need not to remember redundant cipher owing to adopt the input mode of password card can make the convenient the utility model that uses of user.When opening, there is not mechanical sum of errors misoperation simultaneously yet.Because the utility model has the self-clocking parts, the user can be provided with the anti-time that repeats to open, and can prevent in the given time that then the robber from repeating to open this device.The utility model is simple in structure in addition, system password is total makes very greatly (＞100 ten thousand), and cost is low applied widely.

Fig. 1 is the cipher anti-theft device system architecture diagram

Fig. 2 is a cipher anti-theft device mechanical switch structure schematic diagram

Fig. 3 is the open control circuit schematic diagram

Fig. 4 reports to the police and timing portion structured flowchart automatically

Fig. 5 is for comparing and the control part structured flowchart

The 0-system power supply, the 1-system switching, 2-comparison and control part, the automatic open portion of 3-, 4-reports to the police and timing portion automatically, 5-user's presetting cipher parts, 6-foreign key input block, 7-patrols and compares circuit, the 8-open control circuit, the 9-electromagnetic switch, the 10-trigger, the 11-alarm, 12-remembers bistable, the 13-autotimer, the 14-internal electric source, the 15-clock, the 16-back-moving spring, the 17-safety plug, 18-master's latch, the 19-push rod, the 20-door, the 21-casing, the 22-start button, the 23-control circuit.

Example 1, system power supply rectifier power supply.Patrol to select for use and patrol than device 74LS02,74LS08 than circuit 7.Open control circuit 8 is selected thyristor KP1 for use.User's presetting cipher parts 5 and foreign key input block 6 are formed the coding display by photodiode (or phototriode, light resistor).The password card is bored a hole with light tight sheet metal or hardboard.Light source adds reflector with the inky bubble.Electromagnetic switch 9 is selected valve electricity consumption magnetoelectricity MFB1-1.5C for use.Trigger 10 is selected JR(JR for use)-FF7470.Alarm 11 is selected the miniature electric thumper for use.CC4098 is selected in memory bistable 12 for use.Autotimer 13 is selected 40163B for use.Internal electric source 14 6V dry cell.Clock 15 is selected assembly MSM5509RS for use.Back-moving spring 16 specifications are φ 8.Safety plug 17 is selected φ 4 steel latches for use.Main latch 18, push rod 19 are selected φ 8 steel workpieces for use.Gate 20, use steelwork.The common contact button of start button 21 usefulness.Control circuit 23 usefulness 74LS20 form.Above-mentioned parts can be become the utility model according to logic, the structural relation of Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5.

Example 2, user's presetting cipher parts 5 and outside input part 6 usefulness array contact switch replace, and directly link control circuit, omit and patrol than circuit, replace with 74LS113A.Remaining part and logic, constructional device concern identical with example 1.

Claims

1, a kind of cipher anti-theft device, it comprises system power supply, switch, compares control part, alarm, automatic open portion is characterized in that:

A) relatively control part is formed by patrolling than circuit, open control circuit, user's presetting cipher parts, foreign key input block;

B) warning is made up of trigger, alarm, the bistable circuit with " error log " function, automatic timer, internal electric source, clock with timing portion automatically;

2, anti-theft device according to claim 1 is characterized in that, user's presetting cipher parts and foreign key input block are formed by password card, photosensitive circuit, light source, and two groups of photosensitive circuits are in full accord.

It is characterized in that with the anti-theft device of stating according to claim 1 that 3, outer cipher input block and user's presetting cipher parts replace with the array contact switch, directly link the unlatching control circuit, replace to patrol with 74LS11A simultaneously and compare circuit.