Classification of sensors: digital sensors, biosensors, physical sensors, analog sensorsChemical sensor.
There are strain type, capacitance type, inductance type, piezoelectric type, thermoelectric type sensor; According to the basic effect, it can be divided into physical type, chemical type and biological type three kinds of sensors; ⑤ According to the composition, it is divided into physical type and structural type; According to the energy transformation relationship, it can be divided into energy transformation type and energy control type sensor.
According to the working principle of the sensor can be divided into resistance type, inductance type, capacitance type, piezoelectric type, photoelectric type, optical fiber magnetic sensitive type, laser, ultrasonic and other sensors. The measurement principles of existing sensors are based on a variety of physical, chemical and biological effectsThis classification method is convenient to understand the transformation relationship between input and output from the principle, and is conducive to inductive analysis and research by professionals from the principle, design and application.
According to the classification of the physical quantity of the sensor, it can be divided into displacement, force, speed, temperature, flow and other sensors. According to the working principle of the sensor, it can be divided into resistance, capacitance, inductance, voltage, Hall, photoelectric, grating, thermocouple and other sensors. According to the nature of the sensor output signal classification, can be divided into: switch type sensor; Analog sensor; Digital sensor of pulse or code.
1, the temperature sensor is a sensor used to measure the temperature of an object. They can convert the temperature of an object into an electrical output for easy control and monitoring of temperature. The working principle of a temperature sensor can vary according to different sensor types, and the following are several common temperature sensor types: Thermistor (RTD) : A thermistor is a sensor that converts temperature into resistance values. When the temperature increases, its resistance value will also increase.
2, the temperature sensor is the temperature of modern industrial sites and scientific research institutesThe replacement products of measurement and control are the essential products of distributed system and digital bus system. It is generally composed of a temperature probe (thermocouple or thermal resistance sensor) and a two-wire solid electronic unit. The temperature probe is installed directly in the junction box in the form of a solid module to form an integrated transmitter. Temperature sensors are generally divided into two types: thermal resistance and thermocouple.
3, temperature sensor (temperaturetransducer) refers to a sensor that can feel the temperature and convert it into an available output signal. Temperature sensor is the core part of temperature measuring instrument, and there are many varieties. According to theMeasurement methods can be divided into contact and non-contact two categories, according to the characteristics of the sensor material and electronic components are divided into thermal resistance and thermocouple two categories.
4, temperature transducer refers to the sensor that can feel the temperature and convert it into an available output signal. Temperature sensor is the core part of temperature measuring instrument, and there are many varieties. According to the measurement method can be divided into contact and non-contact two categories, according to the sensor material and electronic component characteristics are divided into thermal resistance and thermocouple two categories.
5, the temperature sensor symbol says: thermometer through conductionThe perceived information can be transformed into electrical signals or other required forms of information output according to certain laws to meet the requirements of information transmission, processing, storage, display, recording and control. The characteristics of the sensor include: miniaturization, digitalization, intelligence, multi-function, systematization and networking. It is the primary link to realize automatic detection and automatic control.
Sensor is a detection device that can feel the measured information, and can transform the felt information into an electrical signal or other required form of information output according to a certain law to meet the transmission, processing, storage, display, record and informationControl and other requirements.
Sensor is a detection device that can feel the measured information, and can transform the detected information into an electrical signal or other required form of information output according to a certain law to meet the requirements of information transmission, processing, storage, display, recording and control. It is the primary link to realize automatic detection and automatic control.
sensor (English name: transducer/sensor) is a detection device that can feel the information being measured and can transform the felt information into an electrical signal or other desired shape according to a certain lawTo meet the requirements of information transmission, processing, storage, display, record and control.