Working principle and application of force measuring sensors

Force sensors are a common type of sensor widely used in various industrial automation industries. The main function of a force sensor is to measure the magnitude and target of the force on an object, and convert the measurement results into electrical signals for export, in order to facilitate data collection and control. This article summarizes some information and hopes to provide valuable reference for readers.

1、 The working principle of a force sensor

The working principle of a force sensor is based on the principles of lever and resistance. The force sensor is generally composed of elastomer, Strain gauge, electric bridge, signal conditioning circuit, etc.

When the object is under force, the elasticity will bend and the Strain gauge will gradually bend. Strain gauge is a kind of resistance element that can transform bending into electrical signal. When the Strain gauge is bent, its resistance will change accordingly. The electric bridge is a component for checking the resistance change of Strain gauge, which can convert the resistance of Strain gauge into voltage signal for export.

A signal conditioning circuit is a circuit used to amplify, filter, and linearize voltage signals, facilitating the conversion of signals into usable electrical signals for export. Finally, force sensors can transmit and process electrical signals through digital or analog signals.

2、 Application of force sensors

Force sensors are widely used in various industrial automation industries such as mechanical manufacturing, aerospace engineering, automotive manufacturing, and power industry. The main applications of force sensors include the following aspects.

1. Torque measurement

A force sensor can be used to measure the torque and direction of an object. In fields such as mechanical manufacturing and automotive manufacturing, force sensors are commonly used to measure the torque magnitude and changes of components such as engines, transmissions, and steering gears.

2. Quality measurement

Force sensors can be used to measure the mass and size of objects. Force sensors are commonly used to measure the weight and quality of goods in fields such as electronic manufacturing and food industry.

3. Tension measurement

Force sensors can be used to measure the tension size and direction of objects. In fields such as aerospace engineering and power industry, force sensors are commonly used to measure the tension dimensions and changes of structures such as cables, ropes, and bridges.

4. Pressure measurement

Force sensors can be used to measure the pressure size and target of an object. In fields such as chemical engineering and petrochemicals, force sensors are commonly used to measure the pressure size and changes of structures such as pipelines and containers.

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