CN102054326B

CN102054326B - Intelligent household alarm circuit

Info

Publication number: CN102054326B
Application number: CN 201110006507
Authority: CN
Inventors: 章小宝; 吴誉兰; 李文杰
Original assignee: Nanchang University
Current assignee: Nanchang University
Priority date: 2011-01-13
Filing date: 2011-01-13
Publication date: 2013-01-09
Anticipated expiration: 2031-01-13
Also published as: CN102054326A

Abstract

The invention relates to an intelligent household alarm circuit which is designed by integrating an anti-theft device, a flame alarm device and a coal gas alarm device. The circuit is simple and practical, has complete functions of work testing, communication display, alarming and the like, has a unique extended function, and can be connected with other external devices through a remote communication module.

Description

A kind of Intelligent household alarm circuit

Technical field

The present invention relates to a kind of anti-theft circuit, be specially adapted to home-use.

Background technology

Along with the progress of human society, the growth of the wealth of society and the raising of scientific and technological level have improved people's quality of life, but simultaneously family is stolen, family gas leaks and the phenomenon such as burst fire happens occasionally.So safety problem has become the focal issue of whole international concern.The home alarm device is along with modern society's demand for security is arisen at the historic moment, and demand can be described as huge.This circuit design mainly is the warning for family expenses, comprises anti-theft device, flame warning device, gas alarm device.

Summary of the invention

The purpose of this invention is to provide a kind of with anti-theft device, flame warning device and the integrated circuit design of gas alarm device.

Technical scheme of the present invention is:

This main circuit will be comprised of four parts: be respectively stimulus part; Button, indication and warning part; Single-chip microcomputer basic circuit part; Test signal circuit and far-end communication module part.First is stimulus part.Centered by single-chip microcomputer STC89C516, its P0.0-P0.7 mouth and P2.0-P2.7 mouth meet 48 opening connector 66226-040LF, and the signal of human body pyroelectricity detecting sensor interface is sent into signal by the 66226-040LF mouth.J4, J6 and J8 are three input ports of 66226-040LF, and J4 connects the signal of human body pyroelectricity detecting sensor, and J6 connects the ground of human body pyroelectricity detecting sensor, and J8 connects human body pyroelectricity detecting sensor power supply.The human body pyroelectricity detecting sensor can connect a plurality of, and maximum can connect 16.What P1.4 was connected with P1.5 is flame sensor, and flame sensor is connected respectively to 5 pin and 6 pin of single-chip microcomputer by port numbers FR1 and FR2.What P1.6 was connected with P1.7 is gas sensor, and gas sensor is connected respectively to 7 pin and 8 pin of single-chip microcomputer by port numbers MQ1 and MQ2.These three groups is that the peripheral hardware warning device is connected.

Second portion is indication, button and warning part.Indicating section is mainly by D3, D2, and three light emitting diodes of D1 form, and D3 is the communication indication, and D2 is the work indication, and D1 is the indication of reporting to the police.The communication indication mainly is to be used to indicate single-chip microcomputer and remote communication.Work indication explanation circuit normal operation, powering on just shows.The indication of reporting to the police is for the entering of display, as long as human body pyroelectricity detecting sensor, flame sensor and gas sensor have at least one that signal is arranged, having so and reporting to the police and indication is arranged simultaneously.Key part is respectively by key_Lock (locking), key_Text (test), and key_Unlock (release), four buttons of key_Help (seeking help) form, and these four buttons connect respectively 13,14,15,16 pin of single-chip microcomputer.The part of reporting to the police is comprised of a triode PN4355, warning horn and pull-up resistor R1, and circuit connects the P1.3 mouth, and corresponding is 4 pin of single-chip microcomputer, and warning circuit plays the effect of warning.

Third part is the basic circuit part of single-chip microcomputer, mainly is comprised of Singlechip clock circuit and reset circuit of SCM.The Singlechip clock circuit connects 18,19 pin of single-chip microcomputer, and inside is comprised of crystal oscillator X1 and capacitor C 1, C2, produces the frequency of 11.0592MHz, and this frequency is the essential condition that single-chip microcomputer is started working.The reset circuit of single-chip microcomputer is to be comprised of 11, one capacitor C 3 of a resistance R and button and working power, mainly plays the circuit work that resets, and this circuit connects 29 pin of single-chip microcomputer, Low level effective.

The 4th part is test signal circuit and far-end communication module part.The test signal circuit connects the P3.0 mouth, corresponding single-chip microcomputer is 10 pin, this pin connects the port numbers D1 of MAX487, and become communication disruption signal (DATA_IN) by two four or two input nand gate chips 4011, look-at-me is connected to 12 pin of single-chip microcomputer, the effect of this fraction is as long as the outside has signal to come, and will give single-chip microcomputer by the communication disruption signal so, and indicating section just has corresponding indication simultaneously.The far-end communication module mainly is comprised of MAX487 and RS485, mainly is for the expansion to whole warning performance, signal can be connected to the ground such as residential quarter entrance guard or local police station, is used for a kind of security protection measure that the people stays out.

Beneficial effect of the present invention:

Integrated level is high, is anti-theft device, flame warning device, gas alarm device three bigger devices are integrated; Circuit is simple and practical, and is multiple functional, contains the work test, and communication shows, the functions such as warning; Have unique expanded function, can be undertaken and be connected miscellaneous equipment and connect by the far-end communication module.

Description of drawings

Fig. 1 is core circuit.P0.0-P0.7, P2.0-P2.7, P3.3-P3.6, P1.4-P1.7 are the outer signal input ports.18,19 pin are the Singlechip clock circuit, and 29 pin connect reset circuit.4 pin circuit taking alarm.P1.0-P1.3 connection circuit indicating section.10 and 12 pin connect signal test circuit.11 and 17 pin connect the remote communication module part, and wherein 17 pin are signal I/O gating key.

Fig. 2 is human body heat-releasing electro-detection sensor interface figure, be comprised of J4, J6 and J8, cry three input ports of 6626-040LF, wherein J4 connects the signal of human body pyroelectricity detecting sensor, J6 connects the ground of human body pyroelectricity detecting sensor, and J8 connects human body pyroelectricity detecting sensor power supply.

Fig. 3 is the flame sensor interface schema, respectively corresponding 5,6 pin that connect single-chip microcomputer.

Fig. 4 is the gas sensor interface schema, respectively corresponding 7,8 pin that connect single-chip microcomputer.

Fig. 5 is key testing interface circuit figure, respectively corresponding 13,14,15,16 pin that connect single-chip microcomputer.

Embodiment

If embodiment 1. thieves enter house, arrive as long as detected (Fig. 2) by the human body pyroelectricity detecting sensor, the signal testing part just enters 12 pin by the signal interruption signal so at once.Single-chip microcomputer is indicated by reporting to the police, i.e. D1 bright light among Fig. 1, and simultaneously process warning circuit warning, and chimes of doom sounds.

Embodiment 2. flame sensors (Fig. 3) are in case test if any fire, is then sent into signal by signal test circuit, and the indication of reporting to the police is started working, and namely D1 begins bright light, and reports to the police through warning circuit simultaneously, and chimes of doom sounds at once.

Embodiment 3. gas sensors (Fig. 4) are in case test if any gas leak, is then sent into signal by signal test circuit, and the indication of reporting to the police is started working, and namely D1 begins bright light, and reports to the police through warning circuit simultaneously, and chimes of doom sounds at once.

Claims

1. Intelligent household alarm circuit, it is characterized in that: described circuit comprises stimulus part, indication, button and warning part, single-chip microcomputer basic circuit part and test signal circuit and remote communication module section:

(1) in stimulus part, centered by single-chip microcomputer STC89C516, its P0.0-P0.7 mouth and P2.0-P2.7 mouth meet 48 opening connector 66226-040LF, human body pyroelectricity detecting sensor interface J4, J6 and J8 are three input ports of 66226-040LF, J4 connects the signal of human body pyroelectricity detecting sensor, J6 connects the ground of human body pyroelectricity detecting sensor, J8 connects human body pyroelectricity detecting sensor power supply, what P1.4 was connected with P1.5 is flame sensor, it is 5 pin and 6 pin of single-chip microcomputer that flame sensor is connected respectively to by port numbers FR1 and FR2, what P1.6 was connected with P1.7 is gas sensor, and gas sensor is connected respectively to 7 pin and 8 pin of single-chip microcomputer by port numbers MQ1 and MQ2;

(2) in indication, button and warning part, indicating section is mainly by D3, D2, three light emitting diodes of D1 form, and D3 is the communication indication, and D2 is the work indication, D1 is the indication of reporting to the police, key part respectively by lock, test, release, four buttons of seeking help form, these four buttons connect respectively 13 of single-chip microcomputer, 14,15,16 pin, the part of reporting to the police is comprised of a triode PN4355, warning horn and pull-up resistor R1, circuit connects the P1.3 mouth, and corresponding is 4 pin of single-chip microcomputer;

(3) basic circuit of described single-chip microcomputer, mainly formed by Singlechip clock circuit and reset circuit of SCM, the Singlechip clock circuit connects 18,19 pin of single-chip microcomputer, inside is comprised of crystal oscillator X1 and capacitor C 1, C2, the reset circuit of single-chip microcomputer is by a resistance R 11, capacitor C 3 and button and working power form, and this circuit connects 29 pin of single-chip microcomputer;

(4) in test signal circuit and far-end communication module part, the test signal circuit connects the P3.0 mouth, corresponding single-chip microcomputer is 10 pin, this pin connects the port numbers D1 of MAX487, and become the communication disruption signal by two 42 input nand gate chips 4011, look-at-me is connected to 12 pin of single-chip microcomputer, and the far-end communication module mainly is comprised of MAX487 and RS485.