How the sensor works

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Guide: sensor , also called sensor , friends should know the sensor Everywhere, just a small smart phone, including the acceleration sensor , gravity sensor , distance sensor and other dozens of sensors, so what is the working principle of the sensor? See below ~~

First, the working principle of the sensor - - Introduction

Inductor, the English name is inductorium, also known as sensor , transducer, is a kind of detection device that can measure signals and convert signals as needed. It is usually composed of sensitive components and conversion components. It is the first ring for automatic detection and automatic control. It has been widely used in various automation. Control, security equipment, etc.

Second, the sensor works - - classification

Sensors have different classification standards. According to the use of technology, they can be divided into pressure sensors, image sensors, acceleration sensors, displacement sensors, temperature sensors, etc. According to the application classification, they can be divided into pressure sensors and water immersion sensors. , displacement sensor, weighing sensor, level sensor, etc. There are intersections between the two classification methods, which are the same and different.

Third, the working principle of the sensor - - structure

The basic torque sensor is actually a special torque measuring piece attached to a special elastic shaft. a secondary coil of an energy toroidal transformer, a primary coil of a signal toroidal transformer, a printed circuit board including a rectified stable power supply, an instrumentation amplifying circuit, a V/F conversion circuit, and a signal output circuit; and an outer casing of the inductor are fixed on the elastic shaft The excitation circuit, the primary coil of the energy toroidal transformer, the secondary coil of the signal toroidal transformer, and the signal processing circuit are fixed.

Fourth, the working principle of the sensor

When the elastic shaft of the inductor is twisted, firstly, the strain signal is detected by the strain bridge and amplified by the instrument amplification circuit to some extent; secondly, the amplified strain signal is converted into a frequency signal by the V/F converter and The primary coil of the signal toroidal transformer is transmitted to the secondary coil; finally, the signal processing circuit filters and shapes the frequency signal proportional to the torque of the elastic shaft, and the signal is the sensed signal, which can be used for instrumentation. It can also be transferred to a computer for processing.

Fifth, the working principle of the sensor - - application

1) In the field of special equipment, sensors have been widely used in medical, environmental protection, meteorology, etc., especially in medical equipment applications, and still have great potential;

2) In the field of industrial automation, sensors have been widely used in various measuring process variables, measuring electronic characteristics and other equipment;

3) In the field of communication electronic products, sensors have been widely used in various mobile phones and cordless phones;

4) In the automotive industry, sensors have been widely used in the automation control of automobiles. The number of sensors included in a car is as small as 30 or as many as 200.

How the sensor works