Application of Gas Sensors in Civil, Industrial, Environmental Detection and Other Fields
With the growing demand for smart homes, major technology companies, home appliance enterprises and private capital have flocked into the blue ocean market of smart homes!
First, let us take a look at the current status of smart homes in China:
Single-product IntelligenceIt upgrades traditional manual operations that require human judgment to intelligent automatic execution. For instance, range hoods can detect the intensity of cooking fumes via fume sensors and automatically adjust air exhaust volume according to preset parameters. In addition, traditional home appliances are retrofitted with smart screens, embedded with intelligent systems and connected to the internet.
Integrated ControlIt enables wireless control of household lighting and power supplies. Users can preset usage modes and manually select them on control terminals, which are usually limited to a few daily scenarios such as leaving home, returning home, sleeping and studying.
Intelligent IoT ConnectionThrough mobile APPs, users can freely combine and create various scenarios to control household lights, power supplies and IoT home appliances. Voice control is available via smart voice devices, and related equipment can also be activated by operating smart devices. For example, when you open the door after returning home at night, indoor lights turn on automatically and curtains close at once.Various sensors realize automatic control: temperature and humidity sensors can automatically adjust air conditioner temperature and turn humidifiers on or off; PM2.5 sensors will activate air purifiers once indoor air pollution is detected. A smart home like this brings an excellent sense of well-being.
PM2.5 Dust Detection for Indoor Air
Indoor PM2.5 mainly comes from smoking, cooking fumes and incomplete combustion of gas fuel, which easily cause physical discomfort. It poses particularly severe harm to the elderly, children, infants, and people with pre-existing respiratory or cardiovascular diseases.Traditional solutions include opening windows for ventilation and using range hoods to exhaust dust and fumes during cooking, yet these methods cannot guarantee thorough indoor air purification.
The PM2.5 dust sensor calculates the number of airborne particles by leveraging the scattering effect of infrared light on dust particles. It can sensitively detect particles larger than 1μm in diameter. The built-in heater enables automatic air intake to reduce measurement errors. Moreover, it features a compact size for easy installation and use.
Air Detection for New Car Interiors
Surveys show that 93.6% of new cars have severely excessive indoor air pollutants. In-car pollution mainly originates from vehicle materials and interior decorations. Toxic substances such as formaldehyde, xylene and benzene cause the most severe pollution and may even induce cancer.
Carbon monoxide, known as the "silent killer", is another common harmful gas in cars frequently reported in the news. It is mainly produced by vehicle engines and exhaust emissions, especially when the air conditioner is turned on while the car is parked. Once carbon monoxide accumulates inside the vehicle, occupants may suffer fatal poisoning unknowingly by inhaling this colorless and odorless toxic gas.
Adopting suitable gas sensors can not only monitor volatile organic compounds such as formaldehyde, xylene and benzene in car interiors, but also detect carbon monoxide concentration. It serves as an early warning reminder for car owners to take effective improvement measures and prevent tragedies.
In all the above scenarios, gas sensors can reliably complete detection tasks and provide users with accurate data references. Beyond basic detection, intelligent linkage based on precise data is the future development trend.For example: when excessive formaldehyde or PM2.5 is detected indoors, the exhaust system or negative oxygen ion equipment can be automatically activated to improve air quality; when gas leakage is detected at home, the gas valve will close immediately, the exhaust system will turn on, and an alarm will be sent to users and the control center; when pollutants are detected in car interiors, the air conditioning ventilation system will start to eliminate hazards.
As a converter that converts the volume fraction of specific gas into corresponding electrical signals, the UK DDS gas sensors imported by Shenzhen Sandat have extensive applications in civil, industrial, environmental detection and other fields.
At present, the civil sector is the primary application market for semiconductor metal oxide gas sensors, mainly due to their affordable price and performance that fully meets the requirements of household alarm devices.
Specifically, the applications of gas sensors from Gongcai Network in the civil sector are reflected in the following aspects:In kitchens, they detect leakage of civil gas such as natural gas, liquefied petroleum gas and city gas, and automatically control microwave cooking by sensing gas generated during food heating;Carbon dioxide sensors, smoke sensors and ozone sensors are deployed in residences, buildings, meeting rooms and public entertainment venues to realize automatic operation of air purifiers and electric fans;In high-rise buildings, gas sensors can also detect early fire signs and trigger alarms.
In the industrial sector, gas sensors from
Shenzhen Wuliang Sensor Technology Co., Ltd. are widely used in the petrochemical industry. Carbon dioxide sensors, ammonia sensors and nitric oxide sensors are applied to detect harmful gases such as carbon dioxide, ammonia and chlorine.Additionally, they are used to detect organic solvents and highly toxic gases such as phosphine in the semiconductor and microelectronics industries.In the power industry, hydrogen sensors monitor hydrogen generated during oil deterioration of power transformers.In the food industry, gas sensors can detect the freshness of perishable food such as meat.For fruit and vegetable preservation, they measure the concentration of oxygen, ethylene and carbon dioxide in cold storage to maintain fruit freshness.There is also strong market demand for gas sensors in detecting oxygen content in exhaust gas from automobiles and kilns, as well as testing ethanol concentration in drivers' breath for road traffic management.
Undoubtedly, environmental monitoring, which is closely related to daily life, also relies heavily on gas sensors. For example, sensors detect acid rain-causing gases such as nitrogen oxides, sulfur oxides and hydrogen chloride; carbon dioxide sensors, ozone sensors and refrigerant detectors monitor greenhouse gases.It is believed that with further technological upgrading of gas sensors in the future, their application scope will continue to expand, and we will see their wider adoption in more scenarios.
