Laser displacement sensor capable of accurately measuring displacement of curved-surface target
A laser displacement and target displacement technology, applied in the sensor field in the field of displacement measurement technology, can solve problems such as the inability to accurately measure the displacement of a curved target, and achieve the effect of ensuring imaging quality and measurement accuracy
Inactive Publication Date: 2018-12-11
上海砺晟光电技术有限公司
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[0005] The purpose of the present invention is to propose a laser displacement sensor method that can accurately measure the displacement of a curved surface target in view of the problem that the existing laser displacement sensor cannot accurately measure the displacement of the curved surface target
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[0029] The embodiments of the present invention are described in detail below in conjunction with the accompanying drawings: this embodiment is implemented on the premise of the technical solution of the present invention, and detailed implementation methods and specific operating procedures are provided, but the protection scope of the present invention is not limited to the following the described embodiment.
[0030] like figure 1 As shown, the laser displacement sensor of the present invention mainly includes: a laser diode 1, a transmitting mirror group 2, a receiving mirror group 3, an optoelectronic device 4, a processing circuit 5, and the like. The feature of the laser displacement sensor of the present invention is that the emitting mirror group 2 does not generate only one laser beam, but can generate multiple symmetrical and uniformly distributed parallel laser beams.
[0031] The working process of the laser displacement sensor is as follows: after the laser beam...
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The invention provides a laser displacement sensor capable of accurately measuring the displacement of a curved-surface target. The laser displacement sensor mainly comprises a laser diode, a transmitting lens set, a receiving lens set, a photoelectric device, a processing circuit and the like and is characterized in that the emitting lens set generates a plurality of parallel laser beams which are symmetrical and uniformly distributed instead of one laser beam, the transmitting lens set is composed of a shaping lens, a collimating lens, a beam splitter and a focusing lens, wherein the shapinglens is used for shaping the divergent light beams emitted by the laser diode into a convergent light beam, the collimating lens is used for changing the converged laser beam into a collimating laserbeam, the beam splitter divides one laser beam into a plurality of emitting laser beams which are symmetrically and uniformly distributed, and the focusing lens is used for changing the plurality ofdivergent laser beams into parallel laser beams. The photoelectric device is an area array device instead of a linear array device. The laser displacement sensor can effectively inhibit the influenceof transverse movement and inclination of the sensor on displacement measurement precision, and the requirement for measuring the displacement of a curved-surface target.
Description
technical field [0001] The invention relates to a sensor in the technical field of displacement measurement, in particular to a laser displacement sensor capable of accurately measuring the displacement of a curved surface target. Background technique [0002] At present, the manufacturing industry has put forward higher and higher requirements for various online detection methods. In addition to high-precision, non-contact, digital and other measurement performance requirements, there are also requirements for maintenance performance such as stability, versatility, and interchangeability. It is also increasing day by day in order to continuously reduce maintenance costs, which has become a recognized future trend in the field of online testing. Among them, displacement is an important measurement content, which is widely used in various fields of industrial inspection. Among the numerous displacement sensors, the laser displacement sensor based on the principle of triangul...
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IPC IPC(8): G01B11/03
CPCG01B11/03
Inventor 不公告发明人
Owner 上海砺晟光电技术有限公司