Laser speed measurement method and speed measurement device
A speed measuring device and laser speed measuring technology, applied in the field of measurement, can solve problems such as low measurement accuracy and inability to measure instantaneous speed, and achieve the effect of improving accuracy
Pending Publication Date: 2021-06-29
SHENZHEN JPT OPTO ELECTRONICS CO LTD
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Problems solved by technology
However, these speed measurement methods usually accumulate and average the rotational speed of multiple cycles, which cannot measure instantaneous speed and have low measurement accuracy.
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[0053] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. The components of the embodiments of the invention generally described and illustrated in the figures herein may be arranged and designed in a variety of different configurations.
[0054]Accordingly, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making creative efforts belong to the protection scope of the present invention.
[0055] It should be noted that relative term...
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The invention relates to the technical field of measurement, and provides a laser speed measurement method and a speed measurement device. When a starting instruction sent by a processing module is received, a laser transceiver module emits laser; the laser and reflected light of the laser form an interference light signal in the laser receiving and transmitting module; the signal acquisition module obtains an acquisition electric signal by detecting an interference light signal in the laser transceiver module; and the processing module processes the acquired electric signals in the signal acquisition module to obtain the interference frequency, then obtains the speed corresponding to the interference frequency according to the interference frequency and the matching relationship between the speed and the interference frequency, and obtains the movement speed of the measured moving object according to the speed and the included angle. Motion information of a measured moving object is obtained according to interference light signals of laser and reflected light shapes, photoelectric signal conversion is carried out, electric signals are processed, interference frequency is obtained, the speed of the measured moving object is obtained based on the matching relation and the included angle, and therefore measurement precision is improved.
Description
technical field [0001] The invention relates to the technical field of measurement, in particular to a laser speed measuring method and a speed measuring device. Background technique [0002] The measurement of speed has always been an important technology in the industrial field. At present, the methods of measuring speed include analog speed measurement methods such as centrifugal tachometers, synchronous speed measurement methods such as mechanical or flash strobe speedometers, and counting speed measurement methods. Counting speed measurement method includes mechanical timing counting method and electronic timing counting method. However, these speed measurement methods usually accumulate and average the rotational speed of multiple cycles, which cannot measure the instantaneous speed and have low measurement accuracy. Contents of the invention [0003] In view of this, the object of the present invention is to provide a laser velocity measuring method and a velocity ...
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IPC IPC(8): G01S17/58G01P3/36
CPCG01S17/58G01P3/36
Inventor 刘红弟张梦影黄治家刘健成学平
Owner SHENZHEN JPT OPTO ELECTRONICS CO LTD