MQ-8 Hydrogen Gas Sensor

MQ8 Gas Sensor Module เป็นชุดเซ็นเซอร์ตรวจวัดความหนาแน่นของก๊าซไฮโดรเจน(หรือ H) ในอากาศ

Test Procedure:

Function: This version supporting test program

Using the chip: AT89S52

Crystal: 11.0592MHZ

Baud Rate: 9600

Compilation environment: Keil

Disclaimer  This program is used only for study and reference, the reference please specify copyright and author information!

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Description: 1, single-chip IO output low when the measured concentration is greater than the set concentration

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# Include / / library files

# Define uchar unsigned char / / macro definition unsigned char

Unsigned int # define uint unsigned int / / macro definition.

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I / O definition

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sbit LED = P1 ^ 0; / / definition of SCM P1 port 1 (P1.0) to indicate the end

sbit DOUT = P2 ^ 0; / / definition microcontroller P2 port 1 (P2.0) for the sensor input of

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Delay function

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void delay () / / delay procedure

{

uchar m, n, s;

for (m = 20; m> 0; m -)

for (n = 20; n> 0; n -)

for (s = 248; s> 0; s -);

}

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The main function

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void main ()

{

while (1) / / infinite loop

{

LED = 1; / / extinguish the P1.0 port lights

if (DOUT == 0) / / function when the concentration is higher than the set value, the execution condition

{

delay () ;/ / delay anti-jamming

if (DOUT == 0) / / determine the concentration is higher than the set value, the function of the Executive conditions

{

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

}

}

}

}

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End

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