این
ماژول یک سنسور گازی است که برای تشخیص و اندازهگیری غلظت گازهایی مانند آمونیاک (NH3)، بنزن (C6H6)، بخار الکل (C2H5OH)، CO2 و سولفید هیدروژن (H2S) استفاده میشود.
سنسور MQ-135 با استفاده از تغییر مقاومت الکتریکی در مقابل هر گاز خاص، تغییرات غلظت گازها را تشخیص میدهد. سیگنال خروجی این سنسور قابلیت داشتن ولتاژ متناسب با غلظت گاز را دارد، که میتوان آن را برای نمایش در یک نمایشگر یا برای کنترل واحدهای خارجی مورد استفاده قرار داد.
از کاربردهای رایج MQ-135 میتوان به کیفیت هوای داخلی و بیرونی ساختمانها، سیستمهای تهویه مطبوع، سیستمهای ایمنی و اندازهگیری هوای محیطی اشاره کرد. همچنین، با استفاده از اطلاعات تشخیص داده شده توسط این سنسور، میتوان اقدامات مناسبی در خصوص کاهش آلودگی هوا و بهبود کیفیت زندگی انجام داد.
Description:
Easy to use sensor for measuring the concentration of various toxic gases such as benzone, alcohol, smoke as well as impurities in the air. The MQ-135 measures gas concentration from 10 to 1000ppm and is ideal for detecting a gas leak, as a gas alarm, or for other robotics and microcontroller projects.
The MQ series sensors use a small heating element with an electronic chemical sensor. They are sensitive to a wide range of gases and are suitable for indoor use.
The sensor has high sensitivity and fast response time, but it takes a few minutes to output accurate readings because the sensor has to heat up first. The measured values of the sensor are output as an analog value, which can be easily evaluated with a microcontroller.
This sensor is ready for connection to a microcontroller, such as an Arduino board. For use with a Raspberry Pi, an AD converter is also required.
Application:
Harmful gas detection device for household and environment, suitable for detection of harmful gases such as ammonia, aromatics, sulfides, benzene vapors, smoke, etc. Gas concentration components test concentration range: 10 to 1000ppm
Features:
1. It adopts high-quality double-panel design with power indication and TTL signal output indication;
2. It has DO switch signal (TTL) output and AO analog signal output;
3. TTL output valid signal is low level. (When the output is low, the signal light is on, it can be directly connected to the MCU or relay module.)
4. The voltage of the analog output is higher. The higher the concentration, the higher the voltage.
5. Good sensitivity to air quality and harmful gas detection.
6, there are four screw holes for easy positioning;
7, product dimensions: 32 (L) * 20 (W) * 22 (H)
8, with long-term service life and reliable stability
9, fast response recovery characteristics
10, Input voltage: DC5V Power consumption (current): 150mA
Pinout:
DO output: TTL digital quantity 0 and 1 (0.1 and 5V)
AO output: 0.1-0.3V (relatively non-polluting), the highest concentration voltage is about 4V