CN2184951Y - Remote control coded infrared anti-theft alarm - Google Patents

Abstract

The utility model relates to a remote control coded infrared anti-theft alarm. The remote control coded infrared anti-theft alarm is composed of an infrared emission probe, a receiving probe, a remote control emitter, a receiver, an electric bell controller, an electric bell, and a host machine. An active mode coding signal is adopted to control the host machine to be in an alarm alert state; meanwhile, a remote control coding signal is adopted to carry out selection and switching over to the working state of the host machine. The remote control coded infrared anti-theft alarm is used, the remote control coded infrared anti-theft alarm has low decoding possibility, strong anti-interference capability, good safety performance, convenient use, and cheap price. The remote control coded infrared anti-theft alarm is suitable for being used in the minitype places of a family, an office, a vehicle room, a shop, etc.

Description

Remote control coded infrared anti-theft alarm

The utility model relates to the technical field of burglar alarm, particularly the active infra-red alarm.

Existing Infrared intrusion detector mainly can be divided into passive type and active two kinds.The strick precaution scope of passive type Infrared intrusion detector is big, highly sensitive, and operation control is complicated, generally is fit to large-scale, important place as the use in bank, warehouse, market etc., and the also general family of its expensive price is difficult to bear; And existing active infra-red alarm although its valency is low, easy for installation, is adapted at small-sized place, and especially household is used, and poor anti jamming capability is disengaged on the alert, security personnel's poor performance easily, can not really play effective burglar alarm effect.

The purpose of this utility model is to overcome above-mentioned the deficiencies in the prior art part, provides a kind of employing coded signal control, the remote control coding infrared anti-theft alarm that decrypted possibility is low, antijamming capability is strong, rate of false alarm is low.

The purpose of this utility model is achieved by the following technical solution: the remote control coding infrared anti-theft alarm, constitute by infrared probe, infrared ray receiving transducer, remote control transmitter, receiver of remote-control sytem, electric bell controller, electric bell and main frame, what transmitting probe sent is the infrared pulse signal of band coding, this signal is received the probe reception after the electric bell controller is sent into the demoder in the main frame, the signal that demoder sends is sent into the triggering warning circuit through signal delay circuit, and the guide sound optical alarm circuit stands alert; The infrared encoded signal of sending when remote control transmitter is when receiver of remote-control sytem is sent into the electric bell controller, the demoder of electric bell controller opens or closes according to incoming coded signal, and pilot relay will switch the demoder of sending into main frame from receiving transducer signal and receiver of remote-control sytem signal.

Transmitting probe, receiving transducer and remote control transmitter, receiver of remote-control sytem adopt infrared encoded signal.Main frame comprises demoder, signal delay circuit, triggering warning circuit, sound light alarming circuit, delay circuit and power circuit power on.The input signal of main frame takes out from the electric bell controller, imports from demoder; Output signal is drawn from sound light alarming circuit, the relay control electric bell in the electric bell controller.The electric bell controller mainly is made up of demoder, relay, resistance, triode, wherein the normally closed interlock of a relay links to each other with the receiving transducer signal wire, normally open contact is connected with the receiver of remote-control sytem signal wire, and the switching controls by contact selects wherein one group of signal to send into main frame.Receive the coded signal of transmitting probe when receiving transducer after, the receiving transducer signal is sent into main frame through the electric bell controller, and main frame produces a control signal and suppresses sound light alarming circuit, and it is on the alert to be in warning; When main frame does not receive probe signal or error coded signal, host decoder can be exported a trigger pip and give signal delay circuit, in delay time,, then trigger warning circuit and start if probe signal does not recover yet, produce sound and light alarm, the electric bell sounding of also switching on, but when remote signal, the demoder of electric bell controller is according to the information that opens or closes of remote signal, switch the duty of main frame, make and trigger warning circuit and can be in and drop one's guard or on the alert.

By as seen above-mentioned, the utlity model has following advantage:

1, adopt coding infrared emission, receiving trap, one group of corresponding coding of every pair of probe can not exchange, and decrypted possibility is low.

2, adopt extensive decoding integrated circuit, antijamming capability is strong, rate of false alarm is low.

3, adopt remote control mode control, be difficult for cracking, easy to use, reliable.

4, cheap.

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

Fig. 1 is a structured flowchart of the present utility model;

Fig. 2 is 7 a theory diagram among Fig. 1;

Fig. 3 is 7 a electrical schematic diagram among Fig. 1;

Fig. 4 is 5 a electrical schematic diagram among Fig. 1;

Fig. 5 is 1 a electrical schematic diagram among Fig. 1;

Fig. 6 is 3 a electrical schematic diagram among Fig. 1;

Fig. 7 is 4 a electrical schematic diagram among Fig. 1;

Fig. 8 is 2 a electrical schematic diagram among Fig. 1;

Fig. 9 is the line graph of each figure center tap.

Wherein: 1-transmitting probe, 2-receiving transducer, 3-receiver of remote-control sytem, the 4-remote control transmitter, 5-electric bell controller, 6-electric bell, 7-main frame, the 11-demoder, the 12-signal delay circuit, 13-triggers warning circuit, 14-power circuit, the 15-delay circuit that powers on, the 16-sound light alarming circuit.

With reference to Fig. 1, present embodiment is by transmitting probe 1, and receiving transducer 2, receiver of remote-control sytem 3, remote control transmitter 4, electric bell controller 5, electric bell 6 and main frame 7 constitute.

With reference to Fig. 2-Fig. 9, after receiving transducer 2 receives the coded signal of transmitting probe 1, send into relay J 502 normally closed interlocks of electric bell controller 5 through 2 lines of joint P501, send into 14 pin of IC601 again through 3 lines of main frame 7 joint P601, address code is identical, then 17 pin of the IC601 in the demoder 11 output high level; 13 pin output low levels, because signal delay circuit 12 is made up of comparer IC602, diode D604, resistance, capacitor C 604, its signal input part one tunnel is connected with 13 pin of demoder 11; One the tunnel is connected with 17 pin, and 2 pin of the IC604 in output terminal and the triggering warning circuit 13 are connected.The 1 pin output high level of signal delay circuit 12IC602, making 3 pin of the IC604 that triggers warning circuit 13 is low level, suppresses sound light alarming circuit 16.Local ground sign indicating number difference or probe signal disappear, and 17 pin of IC601 are low level, and capacitor C 604 is by resistance R 614 discharges, when the 3 pin current potentials of IC602 are lower than 2 pin current potentials, will trigger the 3 pin output high level of IC604, connect hummer SPEAK and pilot lamp D607, D608, send sound and light alarm.Simultaneously, relay J 501 closures in the control electric bell controller 5 are connected electric bell 6 power supplys.If when the 3 pin current potentials of IC602 are not lower than 2 pin current potentials, 17 pin of IC601 recover high level again owing to receive probe signal again, and then the 3 pin current potentials of IC602 raise at once, thereby can not trigger warning circuit (shown in Fig. 3,4).

When using a teleswitch, after receiver of remote-control sytem 3 is received pass (OFF) signal of remote control transmitter 4,3 lines through electric bell controller 5 center tap P504, after 14 pin of demoder IC501 are received remote signal, its 13 pin output high level, the normally open contact adhesive of pilot relay J502, This move switches to remote signal with the probe signal on the original normally closed interlock and delivers to main frame 7 by 3 lines of joint P503, after demoder IC601 in the main frame 7 receives signal, if address code is identical, then at 13 pin output high level, by resistance R 606, R607, diode D605 makes triode Q602 conducting, 4 pin that make IC604 are low level, then trigger warning circuit 13 and are in the state of dropping one's guard.When if remote control transmitter 4 sends out (ON) signal, the 13 pin output low levels of the IC501 of electric bell controller 5, relay J 502 normally closed interlock closures, probe signal inserts the IC601 of main frame 7 again, the 4 pin current potentials of IC604 uprise level, and triggering warning circuit 13 is stood alert.When sending warning, it is on the alert that the reset key RESET on the main frame 7 can make main frame reenter.When main frame 7 being in drop one's guard state, but Shutdown Hosts 7 power switches open again, it is on the alert that system is reentered.

False alarm when powering on for minimizing is connected to the delay circuit 12 that powers in the main frame 7, be made up of triode Q601, capacitor C 603, C605, resistance R 603, R604.During energising just, the charging of capacitor C 603 produces the Q601 base current, and its collector makes the Q602 conducting by R607, and 4 pin of control IC604 are low level, are in the state of dropping one's guard.After after a while, after capacitor C 603 was full of electricity, Q601 ended, and Q602 also ends, and warning circuit stands alert.Guarantee to have when total system powers on a stable process, can not produce misoperation.

During use, can be with emission, receiving transducer, the electric bell controller is loaded on voluntarily in garage, garage or other the unserviced room, and receiver of remote-control sytem is loaded on the doorway, in main frame then is loaded between master room.When owner connects host power supply in the room after, enter on the alertly after about three seconds, the pilot lamp on this moment garage doorway receiver of remote-control sytem is bright.When owner need enter garage, only need to click pass (OFF) key on it facing to receiver with the remote control transmitter that carries, the main frame state that drops one's guard immediately, the receiver pilot lamp extinguishes, enter garage and can not trigger warning this moment, after coming out, click opening on the remote control transmitter (ON) key again, main frame reenters on the alert.When standing alert, enter garage as the people, the blocking-up probe signal, the main frame between master room promptly can trigger hummer and pilot lamp, sends sound and light alarm, and the electric bell in the garage also can the tinkle of bells your writing simultaneously, frightens the resistance robber.

Claims (3)

1, the remote control coding infrared anti-theft alarm, by infrared probe (1), infrared ray receiving transducer (2), remote control transmitter (4), receiver of remote-control sytem (3), electric bell controller (5), electric bell (6) and main frame (7) constitute, it is characterized in that: what transmitting probe (1) sent is the infrared pulse signal of band coding, this signal is received probe (2) reception after electric bell controller (5) is sent into the demoder (11) in the main frame (7), the signal that demoder (11) sends is sent into through signal delay circuit (12) and is triggered warning circuit (13), and guide sound optical alarm circuit (16) stands alert; The infrared encoded signal of sending when remote control transmitter (4) is when receiver of remote-control sytem (3) is sent into electric bell controller (5), the demoder (IC501) of electric bell controller (5) is opened (ON) or is closed (OFF) according to incoming coded signal, pilot relay (J502) will switch the demoder (11) of sending into main frame (7) from the signal of receiving transducer (2) with from the signal of receiver of remote-control sytem (3).

2, burglar alarm according to claim 1, it is characterized in that electric bell controller (5) mainly is made up of demoder (IC501), relay (J501, J502), resistance (R501-R503) and triode, and the normally closed interlock of relay (J502) links to each other with the receiving transducer signal wire, and normally open contact is connected with the receiver of remote-control sytem signal wire.

3, burglar alarm according to claim 2 is characterized in that signal delay circuit (12) is made up of comparer (IC602), diode (D604), resistance, electric capacity (C604), and signal input part one tunnel is connected with 13 pin of demoder (11); One the tunnel is connected with 17 pin, and output terminal is connected with 2 pin of IC604 in the triggering warning circuit (13).

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