The use of sensor materials is the basis for the development of new sensors

Sensor material is an important basis of sensor technology, with the progress of materials science, people can produce all kinds of new sensors. Such as made of polymer thin film temperature sensor, optical fiber can be made from pressure, flow, temperature, displacement and so on the many kinds of sensors, made from ceramic pressure sensor.

polymer can be proportional with the ambient relative humidity adsorption and release of water molecules. Determination of making polymer dielectric capacitor, the change of capacitance, can obtain relative humidity. Using the principle of plasma polymerization polystyrene film temperature sensor, a wide range of moisture and wide temperature range, fast response speed, small size, moisture can be used in small space, low temperature coefficient, etc.

ceramic capacitance pressure sensor is a kind of dry without intermediary fluid pressure sensor. Adoption of advanced ceramic technology, thick film technology, its technical performance stability, drift in full scale error less than 01% of temperature drift is small, resistance to overload more accessible range of hundreds of times.

the application of optical fiber is the major breakthrough in the sensing materials, optical fiber sensor is compared with the traditional sensor has many characteristics: high sensitivity, simple structure, small volume, good corrosion resistance, electrical insulation, light and flexible, easy to realize remote sensing etc. And the combination of optical fiber sensor and integrated optics technology, accelerate the development of optical fiber sensor technology. Will be integrated optics devices to replace the original optical element and passive optical components, optical fiber sensor and the signal processing of high bandwidth, low voltage, high reliability, low cost, etc.

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key words: thermal resistance, thermocouple, thermal resistance, platinum resistance, PT100, PT1000, pressure sensor and digital temperature sensor