Click the blue text Follow us Semiconductor-based, multi-gas, affordable solution for graduation project “electronic nose”. 1 Module Introduction The MQ series is a semiconductor gas sensor,multi-gas selectable (MQ-2 for smoke, MQ-5 for combustible gases, MQ-135 for air quality, etc.), powered by 5V, with analog + TTL dual output, an affordable solution for graduation project “electronic … Read more
Have you encountered these frustrating issues when detecting alcohol? Clearly following the procedure, yet the All Gas sensor suddenly outputs a negative signal? After detecting high concentrations of alcohol, the sensor takes a long time to return to normal? These problems are actually related to your lack of attention to the “internal reaction logic of … Read more
Introduction: A Wonderful Olfactory Journey from Baking to Technology Do you know the joy of baking? The aroma of freshly baked bread, the rich scent of coffee… But sometimes, judging the freshness of ingredients and timing the baking process perfectly can be a challenge. This open-source project shares all the necessary information to create and … Read more
According to MEMS Consulting, a research project in Europe is developing a palm-sized gas sensor and analyzer that can be installed on streetlights to detect various toxic gases in real-time. The project, named “PASSEPARTOUT,” is led by Munster Technological University in Ireland, with a total budget of 6.9 million euros, and is scheduled to conclude … Read more
Source:Chip Knowledge Original Author:Future Chip This article mainly discusses what a MEMS catalytic combustion gas sensor is. MEMS catalytic combustion sensors are miniaturized devices used to detect combustible gases, utilizing MEMS technology to miniaturize and integrate traditional catalytic combustion sensors. The core principle of the MEMS catalytic combustion sensor is “flame-free catalytic combustion”. The sensor … Read more
ESP32 Gas Sensor Application Guide 1. Basic Principles and Selection Gas sensors operate by detecting electrochemical changes (such as resistance changes) caused by target gases. Common types include: MQ Series detects specific gases (such as smoke, liquefied gas) and outputs an analog voltage. Digital Sensors directly output I²C digital signals (such as BME680 for multi-parameter … Read more
System Overview This gas leakage alarm system uses the AT89C51 microcontroller as the controller, the MQ-2 gas sensor as the detection element, and the LM016L LCD display as the output device, along with a buzzer and LED alarm light. When a gas leak is detected, the system displays a warning message on the LCD while … Read more
Nitrogen dioxide (NO₂) is a major nitrogen oxide (NOx) pollutant produced by the combustion of fossil fuels, posing significant threats to the ecosystem and human health, necessitating effective detection methods to monitor NO₂. Current NO₂ detection technologies have limitations in stability and selectivity. According to reports from Maims Consulting, a research team led by Professor … Read more
Gas Sensor (MQ-135) The working principle of the MQ135 gas sensor is based on the adsorption of target gases by semiconductor gas-sensitive materials, which changes the resistance value. The sensor contains a sensitive element and a heater, with the sensitive element typically made of metal oxide semiconductor materials, such as tin dioxide (SnO2). When there … Read more
Research Background The rise of flexible, smart electronics has greatly facilitated the non-invasive and timely tracking of physiological information in remote healthcare. Carefully constructed biomimetic sensitive components are crucial for designing efficient electronic skin with advanced cognitive functions to capture diverse external stimuli. However, realistic imitation, whether in the three-dimensional interlocking hierarchical structure of the … Read more