1. Industry background:

Since the beginning of the new century, the automobile industry has gradually become one of the pillar industries in China. The rapid growth of China's economy in recent years has brought people's living standards to a well-off level. When household appliances have been fully popularized, the focus of residents' consumption will turn to large-scale housing and cars. It is under this consumption trend that the automotive industry has maintained a fairly high growth rate in recent years. And this consumption trend will definitely continue to accelerate in the next few years, which has laid a very good foundation for the development of the automotive industry. With the development of science and technology and the gradual strengthening of people's concept of health and environmental protection, the automobile industry is also gradually developing in the direction of safety, environmental protection, health and comfort. Among them, the detection of carbon monoxide, carbon dioxide, formaldehyde, alcohol, methane and other gases related to safety, health and environmental protection has been widely used in the automotive industry.

2. Application occasions and detection gas types:

The harmful gases that cars need to detect mainly come from the following aspects:

1. The first is the interior parts of the car itself. At present, the demand in my country's family car market is very strong, and many manufacturers' cars enter the market directly after the production line. If the assembly plant does not strictly control the quality of auto parts, plastic parts, carpets, roof felts, seats, etc. that do not meet environmental protection requirements will directly cause air pollution in the car. The second is the car trim that stems from the owner's choice. Leather, sponges, floor glue, floor mats, adhesives, etc. containing harmful substances cause air pollution in the car to varying degrees, threatening human health. The main polluting gases are harmful gases in automobiles. The pollution is mainly caused by the volatiles of organic solvents such as benzene, toluene, xylene, formaldehyde and acetone.

2. The second is the harmful gases generated during the use of the car and the external environment, such as carbon monoxide, nitrogen oxides, dust from exhaust gas, and carbon dioxide from passengers in the car.

3. Safety inspection requirements for gas leakage of gas vehicles.

4. Drivers prevent drunk driving to alcohol testing, etc.