CN2241420Y - Theftproof alarm device for telephone - Google Patents

Abstract

The utility model relates to a theft-proof alarm device for a telephone, which is composed of an infrared detector, an alarm control circuit, an alarm loudspeaker, a telephone, a cipher circuit, a cipher keyboard, electrical source, etc., wherein, the cipher circuit controls the alarm loudspeaker and an electric control lock, and the infrared detector is connected with a trigger circuit and the alarm control circuit; the alarm control circuit continuously transmits information stored in the telephone in sequence for many times, and a voice alarm and information code alarm selection switch is also arranged. The utility model has the advantages of complete functions, simple circuits and reliable work.

Description

A kind of phone burglar alarm

The utility model relates to a kind of warning device of making transmission line with telephone wire.

Existing telephone alarm device, great majority only have that loudspeaker are reported to the police and the functions of phone dialing alarm, and common phone dial-up circuit or voice alarm circuit are very complicated, and components and parts are various; Poor reliability and cost costliness; On the other hand, these telephone alarm devices bias toward the warning of passive type, and have ignored and anti-theft device; As lockset etc. in conjunction with utilization, make antitheft with report to the police well-separatedly, therefore the effectiveness of warning device can not be given full play of.

The purpose of this utility model is to overcome above-mentioned the deficiencies in the prior art part, provides that a kind of circuit is simple, components and parts are few, reliable operation, and steals device with the antitheft newspaper of phone that electric control lock is used in combination.

The purpose of this utility model is achieved by the following technical solution: a kind of phone burglar alarm, comprise pyroscan, alarm control circuit, alarming horn, telephone set, power supply, cryptochannel and code keypad, special feature is the cryptochannel that is connected with code keypad, and its two outputs, one end is connected with electric control lock; The other end links to each other with alarming horn; The output of pyroscan is connected with circuits for triggering, and the output of circuits for triggering connects alarm control circuit, two outputs, the one termination alarming horn of alarm control circuit, and the other end then links to each other with telephone set.

After starting the utility model, cryptochannel is accepted from the defeated next signal of code keypad, if password is not right, electric control lock can not opened, and cryptochannel triggers alarming horn; If password is correct, then electric control lock is opened.Thrust oneself in if any the people, be loaded on and produce a signal through the pyroscan of part, send into alarm control circuit again through circuits for triggering, alarm control circuit control analog switch is connected the storage circuitry in the telephone set, and connection telephone set outside line, information stored is in advance sent, realized warning function.

The utlity model has following advantage:

1, is used in combination with electric control lock, more effectively plays effect antitheft, that report to the police.

2, line construction is simple, components and parts are few and reliable operation;

3, the type of alarm content selectable is selected, and more than one of warning target, can give the alarm to the place, many places simultaneously.

Fig. 1 is a theory diagram of the present utility model;

Fig. 2 is the schematic diagram of cryptochannel;

Fig. 3 is the schematic diagram of circuits for triggering, alarm control circuit.

Below in conjunction with drawings and Examples the utility model is further elaborated.

With reference to Fig. 1, present embodiment mainly comprises pyroscan, electric control lock, code keypad, telephone set, alarming horn, power supply and cryptochannel, circuits for triggering, alarm control circuit.

With reference to Fig. 2, cryptochannel is mainly by ic chip ₁, control relay J ₁, J ₂Triode BG ₁, BG ₂Reach peripheral cells such as corresponding resistance, electric capacity and constitute relay switch K ₁, K ₄Connect alarming horn YD, relay switch K ₂Be communicated with electric control lock DS.

With reference to Fig. 3, circuits for triggering are mainly by rest-set flip-flop IC _2-1, IC _2-2, with the door, control relay J ₃, J ₄Triode BG ₃, BG ₄Reaching peripheral cells such as corresponding resistor, electric capacity, diode constitutes.Pyroscan RIC ₃Signal output part connect a input with door, go into end and IC with the other end of door _2-1Q end connect, with the output of door then with IC _2-2R end connect IC _2-2Q end connect alarm control circuit counter IC ₆, IC ₇, IC ₈R end, and relay switch K ₃Connected call machine outside line HS.

With reference to Fig. 3, alarm control circuit is by clock circuit IC ₅, decade counter IC ₆, IC ₇, JC ₈, analog switch IC ₃, IC ₄Corresponding and door, NOR gate, resistance, electric capacity, diode constitute counter IC ₆, IC ₇, IC ₈Output through controlling analog switch IC respectively with door combination ₃, IC ₄, make telephone set RIC ₂Storage circuitry M ₁-M ₅Be switched in order.

The course of work is as follows: after the energized, warning device be in " armed state, among Fig. 2, IC ₁Password to the code keypad input is differentiated, unanimity, BG ₂Conducting, relay J ₂Energising, K ₂Adhesive, electric control lock DS opens, A point output high level, " pinning " circuits for triggering; If password is inconsistent, BG ₁Conducting, relay J ₁Energising, K ₁Adhesive, alarming horn YD sends toot sound.

Circuits for triggering make the B point produce high level, IC among Fig. 3 by the button KB among Fig. 2 _2-1Be rest-set flip-flop, the B point links to each other with its S end, thereby IC _2-1Q end produce high level, at this moment, circuits for triggering are on the alert.When the people enters warning region, pyroscan RIC ₃Output produce high level, therefore with door output high level, owing to meet IC with the output of door _2-2R end, thereby IC _2-2Q end produce low level, with IC ₇Q ₉The low level that end produces is together through NOR gate turn-on transistor BG ₃, make relay J ₃Energising, K ₃Adhesive, telephone set outside line HS connects; While IC _2-2Q end output high level, make BG ₄Conducting, J ₄Energising, K ₄Adhesive, alarming horn YD toot sound.

Because IC _2-2Q end output low level, the IC that is attached thereto ₆, IC ₇, IC ₈R end also be low level, at clock IC ₅Effect under, IC ₆, IC ₇, IC ₈And with door compartment of terrain driving simulation switch I C ₃, IC ₄, make telephone set RIC ₂M in the storage circuitry ₁, M ₂, M ₃Circulation is connected in order, mails to outside line HS.Wherein, M ₁-M ₃What store is telephone number, and number wherein sends respectively three times, as IC ₈Middle Q ₀, Q ₃, Q ₆End warp and door and IC ₃Control M ₁Number sends in first, the 4th and the 7th time; M ₂Number in second, the 5th, the 8th time, send; M ₃Number in the the 3rd, the 6th, the 9th time, send.K switch ₅, K ₆, K ₇Be M ₁-M ₃The form selector switch, K switch ₅, K ₆, K ₇When closing, because IC ₈At the corresponding M that sends ₁-M ₃Telephone number time output high level, analog switch IC ₃, IC ₄Just but short-time contact is sent M ₄, M ₅Interior preset information sign indicating number; As K switch ₅, K ₆, K ₇Open, the low level of its generation is blocked M ₄, M ₅Control and door, and make three NOR gate produce high level, trigger solid playback circuitry RIC ₁, make voice messaging at M ₁-M ₃Telephone number sends the back and sends from microphone, carries out audio alert.

In the present embodiment, IC ₅Adopt NE ₅₅₅, IC ₆-IC ₈Select 4017 for use.

Claims (3)

1, a kind of phone burglar alarm, comprise pyroscan, alarm control circuit, alarming horn, telephone set, power supply, cryptochannel and code keypad, it is characterized in that: the cryptochannel that is connected with code keypad, its two outputs, one end is connected with electric control lock, and the other end links to each other with alarming horn; The output of pyroscan is connected with circuits for triggering, and the output of circuits for triggering connects alarm control circuit, two outputs, the one termination alarming horn of alarm control circuit, and the other end then links to each other with telephone set.

2, burglar alarm according to claim 1 is characterized in that described circuits for triggering are mainly by two rest-set flip-flop (IC ₂), with door and around element constitute rest-set flip-flop (IC _2-1) S termination button KB, (IC _2-1) Q end and pyroscan (RIC ₃) output as with the input of door, with the output and the rest-set flip-flop (IC of door _2-2) R end connect, the Q end then is connected with alarm control circuit.

3, burglar alarm according to claim 1 is characterized in that described alarm control circuit is by clock circuit (IC ₅) decade counter (IC ₆, IC ₇, IC ₈), analog switch (IC ₃, IC ₄) and around constitute clock circuit (IC with door, NOR gate ₅) output meet counter (IC ₆) CP end, counter (IC ₆, IC ₇, IC ₈) output through sending into analog switch (IC with door combination ₃, IC ₄), analog switch (IC ₃, IC ₄) and telephone set (RIC ₂) storage circuitry (M ₁-M ₅) connect.

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