Application scenarios for temperature and humidity sensors

1. Application of temperature and humidity sensors in the subway environment

The subway has a high passenger flow and the amount of fresh air required varies greatly. The air conditioning load of the metro therefore varies considerably and energy savings must be achieved by means of automatic control.

For this purpose, temperature and humidity sensors have been selected for installation in public areas such as station concourses and platform areas, as well as in important equipment rooms, so that the real-time temperature and humidity of the stations can be monitored. These parameters help the operator to adjust the working conditions of the station systems in order to maintain a comfortable environment in the public areas of the station and to ensure that the equipment rooms are always at the right temperature.

2. Application of temperature and humidity sensors in the cold chain storage and transportation of vaccines

Vaccine storage is subject to strict temperature control standards, and a formal vaccine storage and distribution chain should be equipped with temperature and humidity monitoring equipment throughout to meet the requirements of the Code of Practice for the Quality Management of Pharmaceutical Products. Therefore, the involvement of temperature and humidity sensors is essential.

3. Application of temperature and humidity sensors in air purifiers

With the increasing concern of consumers about air pollution, air purification products have gradually become the focus of the market and many people have installed air purifiers in their homes. Current air purifiers on the market are generally equipped with three types of sensors - temperature and humidity sensors, dust sensors and odour sensors.

In air purifiers, temperature and humidity sensors are now increasingly miniaturized products, whose role is to detect indoor humidity (dry state), and the purifier controls the humidification amount according to this data, which can ensure that the indoor environment is within a certain humidity range in order to maintain a fairly comfortable humidity level.

4. Applications in consumer electronics such as smartphones

The main reason preventing smartphone manufacturers from adopting temperature and humidity sensors may not come from the sensors themselves. It is how it is translated into beneficial information for the mobile phone user that is the key to its application. An increasing number of applications have been developed for temperature and humidity sensors.

In the consumer electronics sector, the traditional applications for temperature and humidity sensors are weather forecasting and indoor monitoring. With the addition of API support for temperature and humidity sensors, third party application developers will be able to develop a wide range of applications based on this.

The accuracy of temperature and humidity sensors used in consumer electronics may not need to be that high, with 5% humidity accuracy and 0.5℃ temperature accuracy already meeting customer needs. As the price of sensors continues to decrease, it is believed that in the future not only high-end mobile phones, but also mid- and low-end smartphones will consider adding this feature.