Strain displacement sensor is a sensor based on the principle of strain effect, which is mainly used to measure the displacement change of an object when it is subjected to external force. The following is a detailed description of the strain displacement sensor:
Working principle
The working principle of the strain displacement sensor is based on the strain effect of the material, that is, when an object is subjected to external force, its shape and size will change, and this change can be sensed by the resistance strain gauge pasted on the surface of the object.
The resistance strain gauge consists of a sensitive grid, a substrate, a lead and a cover, etc. Among them, the sensitive grid is the key part for sensing strain.
It is made of a thin wire with a high resistivity bent into a grid shape and fixed on the substrate. When the object is displaced, it will cause the deformation of the resistance strain gauge, thereby changing its resistance value.
By measuring the change in resistance value, the displacement of the object can be calculated.
Features
1. High precision: The strain displacement sensor has high measurement accuracy and can accurately reflect the displacement change of the object.
2. Wide measurement range: It is suitable for displacement measurement of different ranges to meet the needs of various application scenarios.
3. Simple structure: The sensor structure is relatively simple and easy to install and maintain.
4. Good frequency response characteristics: can quickly respond to the displacement changes of objects, suitable for dynamic measurement.
5. Resistant to harsh environments: can work normally in harsh working environments, such as high temperature, low temperature, humidity and other environments.
Application fields
Strain displacement sensors are widely used in various occasions where displacement measurement is required, such as industrial automation, robotics, aerospace, automotive engineering, building monitoring and other fields. It can be used to measure parameters such as displacement, vibration, deformation of mechanical equipment, and provide important basis for equipment operation monitoring, fault diagnosis and performance evaluation.
Precautions for use
1. Choose the appropriate sensor model: choose the appropriate sensor model and range according to the measurement requirements.
2. Correct installation: the sensor should be installed in a position that can accurately reflect the displacement changes of the object, and ensure that the installation is firm and reliable.
3. Regular calibration: in order to maintain the measurement accuracy and stability of the sensor, regular calibration and maintenance are required.
4. Pay attention to the use environment: avoid exposing the sensor to harsh environments such as extreme temperature, humidity or corrosive gases.
In summary, the strain type displacement sensor is a high-precision, wide-measuring-range sensor based on the principle of strain effect.
It has the advantages of simple structure, good frequency response characteristics, and resistance to harsh environments. It has broad application prospects in industrial automation, robotics, aerospace and other fields.