[Popular Science] Detailed current sensor of the type (D)
sensor is an essential product of the information age, almost everywhere. It is the key to human access to information from the outside world. Now people rely on their sense organs, in the study of natural phenomena and laws as well as production activities in their function is far enough.
[Then] current science Detailed species (three) sensors article writing.
1 ,. The thermocouple temperature measurement is the most commonly used temperature sensor. Its main benefit is to adapt to a wide temperature range and atmospheric environment, and strong, low price, no power supply, but also the cheapest. Thermocouples consist of two wires of different metals (metals A and B) connected at one end when the end of the thermocouple is heated, the thermocouple circuitry have potential difference. Available potential difference measured to calculate the temperature.
2, the thermistor is a thermistor semiconductor material, most of the negative temperature coefficient, i.e., the resistance decreases with increasing temperature. Temperature changes cause large resistance changes, so it is the most sensitive temperature sensor. But the poor linearity of thermistor, and very much related to the production process. Manufacturers not give standardized thermistor curves.
The acceleration sensor is an acceleration sensor capable of measuring acceleration sensor. Usually consists of part of the mass damper, the elastic member, the sensitive element and Conditioning circuit. During acceleration sensor, measurement of mass suffered by the inertial force obtained by using Newton's second law of acceleration values. Depending common sensitive sensor element of an acceleration sensor includes a capacitive, inductive, strain gauge, piezoresistive, piezoelectric, etc.
