CN203673594U - Intelligent wireless anti-theft alarm system - Google Patents

Abstract

The utility model discloses an intelligent wireless anti-theft alarm system, which comprises a central processing unit, an infrared detector, a display, a keyboard, an audio amplifier, a loudspeaker, a voice controller, a dual-tone multi-frequency transceiver and a telephone, and the signal output of the infrared detector The end is connected with the data input end of the central processing unit, and the control signal output end of the central processing unit is respectively connected with the control signal input end of the display, the control signal input end of the dual-tone multi-frequency transceiver, the control signal input end of the voice controller and the audio frequency The control signal input end of the amplifier is connected, the control signal input end of the central processing unit is connected with the keyboard, the control signal input end of the telephone is respectively connected with the control signal output end of the dual-tone multi-frequency transceiver and the control signal output end of the voice controller, The control signal output end of the audio amplifier is connected with the loudspeaker. The utility model does not need wiring, and has the advantages of simple structure, convenient installation and low cost.

Description

An intelligent wireless anti-theft alarm system

technical field

The utility model relates to an anti-theft alarm system, in particular to an intelligent wireless anti-theft alarm system.

Background technique

With the development of science and technology, people's living standards have been greatly improved. At the same time, the development of high technology has also provided criminals with new criminal technologies, which have brought unrest to society. Installing anti-theft alarm and other monitoring systems to protect people's lives and property Safety has become an issue that cannot be ignored. However, most anti-theft alarm systems require wiring, which has the disadvantages of complex structure, inconvenient installation, and high cost.

Utility model content

The purpose of this utility model is to provide an intelligent wireless anti-theft alarm system in order to solve the above problems.

The utility model realizes above-mentioned purpose through following technical scheme:

An intelligent wireless anti-theft alarm system includes a central processing unit, an infrared detector, a display, a keyboard, an audio amplifier, a loudspeaker, a voice controller, a dual-tone multi-frequency transceiver and a telephone, and the signal output terminal of the infrared detector is connected to the The data input end of described central processing unit is connected, and the control signal output end of described central processing unit is respectively connected with the control signal input end of described display, the control signal input end of described dual-tone multi-frequency transceiver, the voice controller The control signal input end of the phone is connected to the control signal input end of the audio amplifier, the control signal input end of the central processing unit is connected to the keyboard, and the control signal input end of the phone is connected to the dual-tone multi-frequency transceiver respectively. The control signal output end of the audio amplifier is connected with the control signal output end of the voice controller, and the control signal output end of the audio amplifier is connected with the speaker.

Specifically, the dual-tone multi-frequency transceiver includes a DC power supply, the first capacitor to the fifth capacitor, the first resistor to the seventh resistor, a crystal oscillator, a transistor and a single-chip microcomputer model MT8888, and the positive poles of the DC power supply are respectively Connected with the first end of the first resistor, the first end of the first capacitor, the first end of the second capacitor and the twentieth pin of the microcontroller, the second capacitor of the second Ends are respectively connected with the first end of the second resistor and the nineteenth pin of the single-chip microcomputer, the second end of the second resistor is connected with the eighteenth pin of the single-chip microcomputer, and the first resistor The second end of the single-chip microcomputer is connected with the thirteenth pin of the single-chip microcomputer, and the second pin of the single-chip microcomputer is respectively connected with the first end of the first end of the fourth resistor and the first end of the third resistor, and the first end of the first resistor The second end of the four resistors is connected to the first end of the fifth capacitor, and the second end of the fifth capacitor is respectively connected to the first end of the fifth resistor, the collector of the triode and the signal input end. , the second end of the third resistor is connected to the third pin of the single-chip microcomputer, the first end of the crystal oscillator is connected to the sixth pin of the single-chip microcomputer, and the second end of the crystal oscillator It is connected with the seventh pin of the single-chip microcomputer, and the eighth pin of the single-chip microcomputer is respectively connected with the first end of the sixth resistor, the first end of the third capacitor and the first end of the fourth capacitor connected, the second end of the sixth resistor is connected to the base of the triode, the emitter of the triode is connected to the first end of the seventh resistor, and the second end of the seventh resistor is respectively connected to the The second end of the third capacitor and the second end of the fourth capacitor are connected to ground, and the second end of the fifth resistor and the second end of the first capacitor are respectively grounded.

The beneficial effects of the utility model are:

The utility model adopts the existing telephone network, combines the infrared detection technology and the network control technology of the single-chip microcomputer, so that the anti-theft alarm system does not need wiring, and has the advantages of simple structure, convenient installation and low cost.

Description of drawings

Fig. 1 is a structural block diagram of a kind of intelligent wireless anti-theft alarm system of the present utility model;

Fig. 2 is a circuit diagram of the dual-tone multi-frequency transceiver described in the utility model.

Detailed ways

Below in conjunction with accompanying drawing, the utility model is further described:

As shown in Figure 1, an intelligent wireless anti-theft alarm system of the present invention includes a central processing unit, an infrared detector, a display, a keyboard, an audio amplifier, a loudspeaker, a voice controller, a dual-tone multi-frequency transceiver and a telephone, and an infrared detection The signal output end of the device is connected with the data input end of the central processing unit, and the control signal output end of the central processing unit is respectively connected with the control signal input end of the display, the control signal input end of the dual-tone multi-frequency transceiver, and the control signal of the voice controller. The input end is connected with the control signal input end of the audio amplifier, the control signal input end of the central processing unit is connected with the keyboard, the control signal input end of the telephone is respectively connected with the control signal output end of the dual-tone multi-frequency transceiver and the control signal of the voice controller The output terminal is connected, and the control signal output terminal of the audio amplifier is connected with the loudspeaker.

As shown in Figure 2, the dual-tone multi-frequency transceiver includes a DC power supply V, the first capacitor C1 to the fifth capacitor C5, the first resistor R1 to the seventh resistor R7, a crystal oscillator X, a transistor VT and a single chip microcomputer model MT8888 IC, the positive pole of the DC power supply V is respectively connected to the first end of the first resistor R1, the first end of the first capacitor C1, the first end of the second capacitor C2 and the twentieth pin of the single-chip microcomputer IC, and the second capacitor C2 The second end of the second resistor R2 is respectively connected to the first end of the second resistor R2 and the nineteenth pin of the single-chip IC, the second end of the second resistor R2 is connected to the eighteenth pin of the single-chip IC, and the first end of the first resistor R1 The two ends are connected to the thirteenth pin of the single-chip microcomputer IC, the second pin of the single-chip microcomputer IC is respectively connected to the first end of the fourth resistor R4 and the first end of the third resistor R3, and the second end of the fourth resistor R4 is connected to the first end of the third resistor R3. The first terminal of the fifth capacitor C5 is connected, the second terminal of the fifth capacitor C5 is respectively connected with the first terminal of the fifth resistor R5, the collector of the triode VT and the signal input terminal, and the second terminal of the third resistor R3 is connected with the microcontroller The third pin of the IC is connected, the first end of the crystal oscillator X is connected to the sixth pin of the single-chip IC, the second end of the crystal oscillator X is connected to the seventh pin of the single-chip IC, and the eighth pin of the single-chip IC The pins are respectively connected to the first end of the sixth resistor R6, the first end of the third capacitor C3 and the first end of the fourth capacitor C4, the second end of the sixth resistor R6 is connected to the base of the triode VT, and the base of the triode VT The emitter is connected to the first end of the seventh resistor R7, the second end of the seventh resistor R7 is respectively connected to the second end of the third capacitor C3 and the second end of the fourth capacitor C4 and then grounded, and the second end of the fifth resistor R5 The two terminals and the second terminal of the first capacitor C1 are respectively grounded.

When the infrared detector detects a human intrusion, the encoder encodes the address of the infrared detector, and the coded number enters the central processing unit to trigger an interrupt processing program. The interrupt processing program dials the user's preset A good telephone number is used for remote dialing alarm; at the same time, start the voice controller, and transmit the pre-recorded voice signal to the owner through the telephone line to realize the voice prompt communication function. The trumpet sounded to drive away and intimidate the thieves. The display is used to display the alarm time and alarm type, and the keyboard can realize the functions of password modification, voice input and information viewing.

Claims (2)

1. An intelligent wireless anti-theft alarm system is characterized in that: comprise central processing unit, infrared detector, display, keyboard, audio frequency amplifier, loudspeaker, speech controller, dual-tone multi-frequency transceiver and telephone, described infrared detector The signal output end of the central processing unit is connected with the data input end of the central processing unit, and the control signal output end of the central processing unit is respectively connected with the control signal input end of the display and the control signal input end of the dual-tone multi-frequency transceiver , the control signal input end of the voice controller is connected with the control signal input end of the audio amplifier, the control signal input end of the central processing unit is connected with the control signal output end of the keyboard, and the control signal input end of the phone The input end is respectively connected to the control signal output end of the dual-tone multi-frequency transceiver and the control signal output end of the voice controller, and the control signal output end of the audio amplifier is connected to the control signal input end of the speaker. the 2. A kind of intelligent wireless anti-theft alarm system according to claim 1, characterized in that: the dual-tone multi-frequency transceiver includes a DC power supply, the first capacitor to the fifth capacitor, the first resistor to the seventh resistor, a crystal Oscillator, triode, and single-chip microcomputer model MT8888, the positive pole of the DC power supply is respectively connected to the first end of the first resistor, the first end of the first capacitor, the first end of the second capacitor and the first end of the second capacitor. The twentieth pin of the single-chip microcomputer is connected, the second end of the second capacitor is connected with the first end of the second resistor and the nineteenth pin of the single-chip microcomputer respectively, and the second end of the second resistor end is connected with the eighteenth pin of the single-chip microcomputer, the second end of the first resistor is connected with the thirteenth pin of the single-chip microcomputer, and the second pin of the single-chip microcomputer is connected with the fourth resistor respectively. The first end is connected to the first end of the third resistor, the second end of the fourth resistor is connected to the first end of the fifth capacitor, and the second end of the fifth capacitor is respectively connected to the first end of the fifth capacitor. The first end of the five resistors, the collector of the triode are connected to the signal input end, the second end of the third resistor is connected to the third pin of the single chip microcomputer, the first end of the crystal oscillator is connected to the The sixth pin of the single-chip microcomputer is connected, the second end of the crystal oscillator is connected with the seventh pin of the single-chip microcomputer, the eighth pin of the single-chip microcomputer is respectively connected with the first end of the sixth resistor, the The first end of the third capacitor is connected to the first end of the fourth capacitor, the second end of the sixth resistor is connected to the base of the transistor, and the emitter of the transistor is connected to the seventh resistor connected to the first end of the seventh resistor, the second end of the seventh resistor is respectively connected to the second end of the third capacitor and the second end of the fourth capacitor and grounded, and the second end of the fifth resistor and The second ends of the first capacitors are respectively grounded. the

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