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Release Time : 2025-05-14
The rebound (side exit cable) high-precision contact displacement sensor is widely used in many fields, and its micron-level measurement accuracy is a key performance indicator. This relies on a carefully designed core structure and is achieved through the synergy of multiple technical means.
The rebound (side exit cable) high-precision contact displacement sensor uses high-precision elastic elements, such as special springs or elastic beams. These elastic elements have stable elastic coefficients and extremely small hysteresis characteristics. When they are displaced by external forces, they can accurately convert the displacement into elastic deformation and quickly return to their original state after the force disappears, providing a basis for accurate measurement. For example, by precisely controlling the material, wire diameter, number of turns and other parameters of the spring, it can produce accurately measurable elastic force changes under small displacements.
The core structure is equipped with high-precision displacement measurement elements, such as grating scales or high-precision potentiometers. Taking the grating scale as an example, it uses the moiré fringe principle of the grating to convert the displacement into changes in the light signal. When the measuring head is slightly displaced, the moiré fringes on the grating scale will move accordingly, and the photoelectric detector will accurately measure the movement amount and position of the fringes, thereby achieving micron-level displacement measurement accuracy. The potentiometer reflects the displacement change through precise resistance changes, and the accuracy and linearity of its resistance element are carefully designed and calibrated.
To ensure the movement accuracy and stability of the measuring head, the rebound (side exit cable) high-precision contact displacement sensor is designed with a precise guide and support structure. For example, a high-precision guide rail and slider combination is used to ensure the straightness and repeatability of the measuring head during linear motion. At the same time, the support structure can effectively reduce the impact of external vibration and interference on the measurement, so that the measuring head can accurately follow the displacement changes of the measured object and avoid measurement errors caused by shaking or offset.
The design of the contact measuring head is crucial to achieve high-precision measurement. The measuring head is usually made of materials with high hardness and good wear resistance to reduce wear during long-term use. Its shape is carefully designed, such as a spherical or conical shape, to ensure good contact with the measured object and accurately sense small displacement changes. In addition, the connection between the measuring head and the elastic element adopts a flexible connection method, which can effectively transmit force and displacement while avoiding additional stress and deformation.
The signal processing and calibration circuit inside the rebound (side exit cable) high-precision contact displacement sensor plays a key role in achieving micron-level accuracy. The signal processing circuit can amplify, filter and digitize the weak electrical signal output by the measuring element to improve the quality and resolution of the signal. At the same time, the sensor is regularly calibrated and error compensated through the calibration circuit, and the nonlinearity, temperature drift and other errors of the sensor are corrected according to the actual measurement data to ensure the long-term stability of the measurement accuracy.
The rebound (side exit cable) high-precision contact displacement sensor effectively achieves micron-level measurement accuracy through the coordinated design of core structures such as precision elastic elements, high-precision displacement measurement elements, precision guide and support structures, optimized contact measuring heads, and signal processing and calibration circuits, meeting the needs of various high-precision measurement occasions.
