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Module MQ-3 alcohol sensor module MQ MQ gas sensor module

CC1212125349

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Seller Name : Mod N Shields
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Product Details

 

A brief description:

I. Size:32mmX22mmX27mm long X width X high

main chips:LM393 , ZYMQ-3 The gas sensor

working voltage: DC5 V

features:

1, A signal output indication.

2Dual signal output And analog output TTL Level output

3, TTL Output valid signal is low. When the output low signal light can be directly connected microcontroller

4Analog output 0 ~ 5V Voltage, the higher the concentration the higher the voltage.

5Of ethanol vapor with high sensitivity and good selectivity.

6The stability of long-term service life and reliable

7Quick response and resume

V. Application:

For on-site detection of motor vehicle drivers and other non-drinking workers, but also for detecting other places of ethanol vapor
Marking explanation

test program

Function:

1, When the measured concentration greater than the set concentration, SCMIO Port output low

/ ************************************************* *******************

The Department of Science and Technology Cheng

Function: This version of the test program supporting

Use chip: AT89S52

Crystal: 11.0592MHZ

Baud rate: 9600

Compiler Environment: Keil

Author: zhangxinchunleo

Website: www.ourhc.cn

Taobao shop: Department of Science and Technology Cheng ##1##

statementThis procedure is used only for study and reference, please indicate the copyright and author information!

************************************************** ******************* /

/ ************************************************* *******************

Description: 1, When the measured concentration greater than the set density, single-chip IO port output low

************************************************** ******************* /

# Includereg52.h // Library

# Defineucharunsignedchar // macro definition unsigned char

# Defineuintunsignedint // macro definition unsigned int

 

/ ************************************************* *******************

I / O definitions

************************************************** ******************* /

sbitLED = P1 ^ 0; // Define a first microcontroller P1 port That P1.0 To indicate the end

sbitDOUT = P2 ^ 0; // Define the microcontroller P2 port Chapter 1 That P2.0 The input end of the sensor

/ ************************************************* *******************

Delay function

************************************************** ******************* /

voiddelay () // delay procedure

(

ucharm, n, s;

for (m = 20; m0; m--)

for (n = 20; n0; n--)

for (s = 248; s0; s--);

)

/ ************************************************* *******************

The main function

************************************************** ******************* /

voidmain ()

(

while (1) // infinite loop

(

LED = 1; // Off P1.0 port lights

if (DOUT == 0) // When the concentration is higher than the set value, the implementation of the Con

(

delay (); // delay interference

When if (DOUT == 0) // determine the concentration higher than the set value, the implementation of the Con

(

LED = 0; // P1.0 port lights lit

)

)

)

)

/ ************************************************* *******************

End

************************************************** ******************* /

 

 



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SKU CC1212125349
Cash on Delivery No

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