CN205541313U

CN205541313U - Carbon monoxide detector appearance based on AT89C52 singlechip

Info

Publication number: CN205541313U
Application number: CN201620266533.9U
Authority: CN
Inventors: 潘长宁; 钟春良; 江友君; 戴圣伟; 李明; 肖刚毅; 宋海翔
Original assignee: Hunan University of Technology
Current assignee: Hunan University of Technology
Priority date: 2016-04-01
Filing date: 2016-04-01
Publication date: 2016-08-31
Anticipated expiration: 2026-04-01

Abstract

The utility model provides a carbon monoxide detector appearance based on AT89C52 singlechip, it is main including the minimum system of AT89C52 singlechip, analog -to -digital conversion module, sensor module, the display module, alarm module, the power modul, gather current environment carbon monoxide concentration through sensor module, after analog -to -digital conversion module converts digital electric signal into, send into the minimum system of AT89C52 singlechip and handle the back, show current environment carbon monoxide concentration on the display module, and whether control alarm module reports to the police.

Description

A kind of carbonmonoxide detector based on AT89C52 single-chip microcomputer

Technical field

This utility model relates to a kind of carbonmonoxide detector based on AT89C52 single-chip microcomputer, relates generally to the detection of environment carbonomonoxide concentration and early warning.

Background technology

At present, the precision that gas sensor is the highest, up to ten thousand/more than, along with new material development and the raising of new process technology, there is the gas sensor of high reliability and low-power consumption, it is low that the gas sensor of intelligent digital overcomes the efficiency that current gas sensor manual testing brings, the problem that error is big and operator work long hours；A large amount of carbon monoxide can be produced due to coal imperfect combustion in the indoor environments such as kitchen, human body is had threat greatly, so by the concentration of carbonmonoxide detector detection current environment carbon monoxide, being to judge current environment whether safety and the important measures of guarantee human life.

Summary of the invention

A kind of carbonmonoxide detector based on AT89C52 single-chip microcomputer, mainly includes AT89C52 single-chip minimum system, analog-to-digital conversion module, sensor assembly, display module, alarm module, power module；Sensor assembly is connected with analog-to-digital conversion module, the analog electrical signal of collection is transferred to analog-to-digital conversion module and carries out analog digital conversion；Power module is connected with AT89C52 single-chip minimum system, powers for whole circuit；Analog-to-digital conversion module is connected with AT89C52 single-chip minimum system, the digital electric signal after analog digital conversion is sent into AT89C52 single-chip minimum system and processes；AT89C52 single-chip minimum system is connected with display module, shows that current environment carbonomonoxide concentration, AT89C52 single-chip minimum system are connected with alarm module on display module, when carbonomonoxide concentration exceedes the upper limit, controls alarm module and reports to the police.

Accompanying drawing explanation

Fig. 1 is this utility model entire block diagram；

Fig. 2 is this utility model AT89C52 single-chip minimum system figure；

Fig. 3 is this utility model analog-to-digital conversion module figure；

Fig. 4 is this utility model sensor assembly figure；

Fig. 5 is this utility model display module figure；

Fig. 6 is this utility model alarm module figure；

Fig. 7 is this utility model power module figure.

Detailed description of the invention

Fig. 1 is entire block diagram, mainly includes AT89C52 single-chip minimum system, analog-to-digital conversion module, sensor assembly, display module, alarm module, power module；Sensor assembly is connected with analog-to-digital conversion module, the analog electrical signal of collection is transferred to analog-to-digital conversion module and carries out analog digital conversion；Power module is connected with AT89C52 single-chip minimum system, powers for whole circuit；Analog-to-digital conversion module is connected with AT89C52 single-chip minimum system, the digital electric signal after analog digital conversion is sent into AT89C52 single-chip minimum system and processes；AT89C52 single-chip minimum system is connected with display module, shows that current environment carbonomonoxide concentration, AT89C52 single-chip minimum system are connected with alarm module on display module, when carbonomonoxide concentration exceedes the upper limit, controls alarm module and reports to the police.

Fig. 2 is AT89C52 single-chip minimum system figure, mainly include reset circuit and crystal oscillating circuit, reset circuit is mainly made up of button, resistance and electric capacity, push button, high level resets, crystal oscillating circuit is mainly made up of crystal oscillator and electric capacity, and crystal oscillating circuit provides operating frequency for AT89C52 single-chip minimum system.

Fig. 3 is analog-to-digital conversion module figure, mainly it is made up of modulus conversion chip ADC0808 and phase inverter 74LS04, utilize modulus conversion chip ADC0808 that the analog electrical signal that sensor assembly detects is converted to digital electric signal, and processed by anti-phase rear the feeding in AT89C52 single-chip minimum system of reverser 74LS04.

Fig. 4 is sensor assembly figure, is mainly made up of MQ7-CO sensor, and carbonomonoxide concentration parameter in current environment is converted into analog electrical signal.

Fig. 5 is display module figure, is mainly made up of two LED 8 segment numeral pipes, for the carbonomonoxide concentration of display current environment in real time.

Fig. 6 is alarm module figure, is mainly made up of audion MPS6514 and buzzer, and buzzer one terminates+5V power supply, the other end is connected with-5V by audion, AT89C52 single-chip microcomputer, by controlling the break-make of audion MPS6514, changes buzzer both end voltage, thus controls alarm module and report to the police.

Fig. 7 is power module figure, mainly it is made up of transformator, rectifier bridge, electric capacity and voltage stabilizing chip LM7805, LM7905, civil power is after transformer pressure-reducing, by full-bridge rectification and capacitor filtering, again after three-terminal voltage-stabilizing chip LM7805, LM7905 voltage stabilizing, output DC voltage is the power supply of whole circuit with stable.

Claims

1. a carbonmonoxide detector based on AT89C52 single-chip microcomputer, mainly includes AT89C52 single-chip minimum system, analog-to-digital conversion module, sensor assembly, display module, alarm module, power module；Sensor assembly is connected with analog-to-digital conversion module, the analog electrical signal of collection is transferred to analog-to-digital conversion module and carries out analog digital conversion；Power module is connected with AT89C52 single-chip minimum system, powers for whole circuit；Analog-to-digital conversion module is connected with AT89C52 single-chip minimum system, the digital electric signal after analog digital conversion is sent into AT89C52 single-chip minimum system and processes；AT89C52 single-chip minimum system is connected with display module, shows that current environment carbonomonoxide concentration, AT89C52 single-chip minimum system are connected with alarm module on display module, when carbonomonoxide concentration exceedes the upper limit, controls alarm module and reports to the police.

Kind the most according to claim 1 carbonmonoxide detector based on AT89C52 single-chip microcomputer, it is characterized in that AT89C52 single-chip minimum system mainly includes reset circuit and crystal oscillating circuit, reset circuit is mainly made up of button, resistance and electric capacity, push button, high level resets, crystal oscillating circuit is mainly made up of crystal oscillator and electric capacity, and crystal oscillating circuit provides operating frequency for AT89C52 single-chip minimum system；Power module, mainly being made up of transformator, rectifier bridge, electric capacity and voltage stabilizing chip LM7805, LM7905, civil power is after transformer pressure-reducing, by full-bridge rectification and capacitor filtering, again after three-terminal voltage-stabilizing chip LM7805, LM7905 voltage stabilizing, output DC voltage is the power supply of whole circuit with stable；Sensor assembly, is mainly made up of MQ7-CO sensor, and carbonomonoxide concentration parameter in current environment is converted into analog electrical signal；Analog-to-digital conversion module, mainly it is made up of modulus conversion chip ADC0808 and phase inverter 74LS04, utilize modulus conversion chip ADC0808 that the analog electrical signal that sensor assembly detects is converted to digital electric signal, and processed by anti-phase rear the feeding in AT89C52 single-chip minimum system of reverser 74LS04；Display module, is mainly made up of two LED 8 segment numeral pipes, for the carbonomonoxide concentration of display current environment in real time；Alarm module, is mainly made up of audion MPS6514 and buzzer, and buzzer one terminates+5V power supply, the other end is connected with-5V by audion, AT89C52 single-chip microcomputer, by controlling the break-make of audion MPS6514, changes buzzer both end voltage, thus controls alarm module and report to the police.