Linear displacement measurement system based on alternating light field
A technology of linear displacement and measurement system, applied in the field of linear displacement measurement system based on alternating light field, can solve the problem of uncontrollable amplitude, phase, scattering angle and uniformity of four-channel alternating light source signal, and the overall volume of sensor probe Large and high-quality traveling waves are difficult to obtain, so as to achieve the effect of low installation and processing technology requirements, easy integration and processing, and reduced difficulty and
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[0025] The present invention will be described in detail below in conjunction with the accompanying drawings.
[0026] Such as figure 1 , figure 2 The linear displacement measuring system based on the alternating light field shown includes a light emitting element 1, a scale base 2, a moving scale base 3, a photodetector 4 and an electronic signal processing circuit. The scale base 2 remains fixed, and the light emitting element 1, The moving scale base 3 and the photodetector 4 can move with the measured object at the same time. The light emitting element 1 is installed in front of the fixed scale base 2. The light emitting element 1 includes a light source base 12 and a strip-shaped alternating light source installed on the light source base 12. Body 11, alternating light source Body 11 is an array of light-emitting diodes (also can be a semiconductor surface light source), driven by a sinusoidal excitation signal to form a single alternating light field.
[0027] The fix...
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