CN102054326A

CN102054326A - Intelligent household alarm circuit

Info

Publication number: CN102054326A
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: 2011-05-11
Anticipated expiration: 2031-01-13
Also published as: CN102054326B

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 domestic 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 phenomenon such as burst fire happens occasionally.So safety problem has become the focal issue that whole international community pays close attention to.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 that is used 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 circuit mainly is made up of four parts: be respectively stimulus part; Button, indication and warning part; Single-chip microcomputer basic circuit part; Signal testing, far-end communications portion.First is a stimulus part.With single-chip microcomputer STC89C516 is the center, and its P0.0-P0.7 mouth and P2.0-P2.7 mouth meet 6626-040LF, and the signal of human body pyroelectricity detecting sensor interface is sent into signal by the 6626-040LF mouth.J4, J6 and J8 are three input ports of 6626-040LF, 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 to P1.4 and P1.5 mouth (be single-

chip microcomputer

5,6 mouthfuls) by FR1 and FR2.What P1.6 was connected with P1.7 is gas sensor, and gas sensor is connected to P1.6 and P1.7 mouth (be single-

chip microcomputer

7,8 mouthfuls) by 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 are formed, 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.The operation of work indication explanation circuit is normal, and powering on just shows.The indication of reporting to the police is to be used for entering of shows signal, as long as human body pyroelectricity detecting sensor, flame sensor and gas sensor have at least one that signal is arranged, having so reports to the police also indication simultaneously.Button part is respectively by key_Lock (locking), key_Text (test), and key_Unlock (release), four buttons compositions of key_Help (seeking help), these four buttons connect 13,14,15,16 pin of single-chip microcomputer respectively.The part of reporting to the police is made up of a triode PN4355, warning horn and pull-up resistor R1, and circuit connects the P1.3 mouth, correspondence be 4 pin of single-chip microcomputer, warning circuit plays the effect of warning.

Third part is the basic circuit part of single-chip microcomputer, mainly is made up of single-chip microcomputer clock circuit and reset circuit of SCM.The single-chip microcomputer clock circuit connects 18,19 pin of single-chip microcomputer, and inside is made up 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 made up 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, and low level is effective.

The 4th part is test signal circuit and far-end communications portion.The test signal circuit connects the P3.0 mouth, corresponding single-chip microcomputer is 10 pin, this pin connects the D1 of MAX487, and become communication disruption signal (DATA_IN) by two 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 made up of MAX487 and RS485, mainly is the expansion that is used for whole warning performance, signal can be connected to ground such as sub-district 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:

The integrated level height is that 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, functions such as warning; Have unique expanded function, can be undertaken being connected by the far-end communication module with outside miscellaneous equipment.

Description of drawings

Fig. 1 is a core circuit, P0.0-P0.7, and P2.0-P2.7, P3.3-P3.6, P1.4-P1.7 are the outer signal input ports.18,19 pin are the single-chip microcomputer 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 body heat of behaving is released electro-detection sensor interface figure, be made up 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, corresponding respectively 5,6 pin that connect single-chip microcomputer.

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

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

Embodiment

If embodiment 1. thieves go into 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. the bright lamp of D1 among Fig. 1, and process warning circuit warning simultaneously, 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 promptly D1 begins bright lamp, 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 promptly D1 begins bright lamp, and reports to the police through warning circuit simultaneously, and chimes of doom sounds at once.

Claims

1. intelligent domestic alarm circuit, it is characterized in that: described circuit comprises stimulus part, indication, button and warning part, single-chip microcomputer basic circuit part and signal testing, remote communication part.

2. a kind of intelligent domestic alarm circuit according to claim 1, it is characterized in that: in stimulus part, with single-chip microcomputer STC89C516 is the center, its P0.0-P0.7 mouth and P2.0-P2.7 mouth meet 6626-040LF, human body pyroelectricity detecting sensor interface J4, J6 and J8 are three input ports of 6626-040LF, 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, flame sensor is connected to P1.4 by FR1 and FR2 and the P1.5 mouth (is 5 of a single-chip microcomputer, 6 mouthfuls), what P1.6 was connected with P1.7 is gas sensor, and gas sensor is connected to P1.6 by MQ1 and MQ2 and the P1.7 mouth (is 7 of a single-chip microcomputer, 8 mouthfuls).

3. a kind of intelligent domestic alarm circuit according to claim 1, it is characterized in that: in the indication button and the part of reporting to the police, indicating section is mainly by D3, D2, three light emitting diodes of D1 are formed, D3 is the communication indication, and D2 is the work indication, and D1 is the indication of reporting to the police, button part respectively by lock, test, release, four buttons of seeking help form, these four buttons connect 13,14,15 of single-chip microcomputer respectively, 16 pin, the part of reporting to the police is made up of a triode PN4355, warning horn and pull-up resistor R1, and circuit connects the P1.3 mouth, correspondence be 4 pin of single-chip microcomputer.

4. a kind of intelligent domestic alarm circuit according to claim 1, it is characterized in that: the basic circuit of described single-chip microcomputer, mainly form by single-chip microcomputer clock circuit and reset circuit of SCM, the single-chip microcomputer clock circuit connects 18,19 pin of single-chip microcomputer, inside is made up of crystal oscillator X1 and capacitor C 1, C2, the reset circuit of single-chip microcomputer is that this circuit connects 29 pin of single-chip microcomputer by 11, one capacitor C 3 of a resistance R and button and working power composition.

5. a kind of intelligent domestic alarm circuit according to claim 1, it is characterized in that: in test signal circuit and far-end communications portion, the test signal circuit connects the P3.0 mouth, corresponding single-chip microcomputer is 10 pin, this pin connects the D1 of MAX487, and become the communication disruption signal by two 4011, and look-at-me is connected to 12 pin of single-chip microcomputer, and the far-end communication module mainly is made up of MAX487 and RS485.