Detailed description of the components and working principle of the wireless sensor

The component module of the wireless sensor is packaged in a casing, and when it is working, it will be powered by a battery or a vibration generator to form a wireless sensor network node, which is composed of randomly distributed micro nodes integrated with sensors, data processing units and communication modules. The way the organization forms the network.

It can collect the digital signal of the device and transmit it to the wireless gateway of the monitoring center through the wireless sensor network, and directly send it to the computer for analysis and processing. The wireless sensor can also transmit the entire time history signal collected in real time if needed.

The monitoring center can also wirelessly transmit information such as control and parameter settings to the node through the gateway. The data conditioning acquisition processing module passes the weak signal outputted by the sensor to the conditioning circuit after amplification, filtering, etc., and then sends it to the analog-to-digital converter, converts it into a digital signal, and sends it to the main processor for digital signal processing to calculate the effective value of the sensor, and the displacement. Value, etc.

Resistive sensor:

Fabric tension measurement and control principle

Straight slide potentiometer controls cylinder piston stroke

Piezoresistive sensor measures the working principle of the liquid level

MQN type gas sensitive resistor structure and measuring circuit

How the bubble level works

Diffused silicon pressure sensor

Strain acceleration sensor

Weighing level gauge

Electronic belt scale

Electronic crane scale

Load cell is used to measure the principle of truck scale

Principle of liquid tank scale

TiO2 oxygen concentration sensor structure and measuring circuit

Potentiometer sensor

Ceramic humidity sensor

Principle of porous alumina moisture sensitive capacitor

Basic variable gap capacitive sensor and differential variable gap capacitive sensor work principle

Variable area capacitive sensor working principle

Principle of object position detection using proximity switches

Light column shows the principle of coded level gauge

Capacitive pressure sensor

Differential pressure level gauge a

Differential pressure level gauge b

Differential pressure level gauge c

Capacitance level gauge schematic

Capacitance thickness gauge

Capacitive acceleration sensor

Capacitive oil gauge principle

Principle of measuring the flow by frequency difference method

Air conduction type ultrasonic generation, structure of receiver

Two types of ultrasonic applications

Ultrasonic probe structure

Principle of ultrasonic flowmeter

Principle of ultrasonic thickness measurement

Ultrasonic measurement of density principle

Ultrasonic measurement of liquid level principle

Ultrasonic burglar alarm

Longitudinal wave inspection

Transverse wave flaw detection

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