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Mind map of the introduction to sensors. The so-called test is a measurement with experimental nature. It is a synthesis of testing and measurement. A sensor is a measuring device that can sense a specified measured value and convert it into a usable output signal according to certain rules.
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sensor
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- Outline
introduction
1.1 Test basics
1.1.1 Meaning of test
The so-called test is a measurement with experimental nature. It is a synthesis of testing and measurement.
1.1.2 Basic principles and process of testing
Testing technology is sometimes also called detection technology, also known as generalized measurement, which is the process of converting the measured (signal) into a quantity that can be detected, transmitted, processed, displayed or recorded, and then compared with a standard quantity. These links are completed by a set of specialized equipment, usually called a test system.
Block diagram of the test system
1.2 Sensor Overview
1.2.1 Definition and function of sensors
1. Definition of sensor
A sensor is a measuring device that can sense a specified measured value and convert it into a usable output signal according to certain rules.
2. The role of the sensor
(1) Information collection
(2) Diagnosis and alarm
(3) Detection and control
1.1.2 Composition and classification of sensors
1. Composition of the sensor
Sensors generally consist of sensitive components, conversion components, signal conditioning circuits and auxiliary power supplies.
Sensor block diagram
2. Classification of sensors
(1) Classification according to working principle
(2) Classification by energy conversion
energy control sensor
Energy conversion sensor
(3) Classification by output signal
Analog sensor
digital sensor
(4) Classification according to measured energy
speed sensor
Accelerometer
Speed sensor
Torque sensor
Pressure Sensor
Flow Sensors
Temperature Sensor
Humidity Sensor
concentration sensor
It can also be classified according to the form of action, composition, materials, uses, etc.
1.1.3 Development Trend of Sensors
1. Development of new materials and new functions
Sensor materials are an important foundation for sensor technology, and new materials are the basis for developing new sensors.
Semiconductor material
Piezoelectric materials
Functional Materials
other materials
Polymer, nano, composite and other materials
2. Application of new processes and new technologies
3. Development of multi-functional and intelligent sensors