Principle of ozone sensor
Ozone and other gases are diffused through a diffusion membrane onto a sensing electrode. The control circuit maintains a voltage between the sensing electrode and the counter electrode sufficient to start the chemical reaction, and the electrochemical reaction generated in the presence of ozone forms a current between the two electrodes.
The intensity of this current is proportional to the concentration of ozone and is reversible. The control circuit also creates a bias level between the sense and counter electrodes, a level that does not create a current between the two poles, and the sensor's fast response allows it to provide real-time continuous detection of the surrounding air.
2.The development direction of ozone sensor
In recent years, the research and development of gas sensors has become more and more important due to the increasing requirements in terms of precision, performance and stability in industrial production, home safety, environmental monitoring and medical treatment.
With the application of advanced science and technology, the trend of gas sensor development is miniaturization, intelligence and multi-functionalization. In-depth research and mastery of organic, inorganic, biological and various material properties and interactions, understanding the working principle and mechanism of action of various types of gas sensors, the correct choice of sensitive materials for various types of sensors, flexible use of micro-machining technology, sensitive film formation technology, micro-electronics, optical fiber technology, etc., to optimize the performance of sensors is the development direction of gas sensors.
