Device and measuring method for measuring object shape
A technology of object shape and equipment, applied in the field of measurement, can solve problems such as insufficient speed, and achieve the effect of improving measurement speed and ensuring measurement accuracy
Pending Publication Date: 2019-03-08
孙志军
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Compared with this method, the speed of moving the light spot is much faster than that of moving the detection head, but it can only measure the coordinates of one point on the measured object at a time, so the speed is not fast enough, so it is necessary to improve
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[0018] Below in conjunction with accompanying drawing and specific embodiment the present invention is described in further detail:
[0019] see figure 1 , a device for measuring the shape of an object, comprising a pulsed light source 1 , a first optical crossbar switch 2 , a second optical crossbar switch 3 , a sensor 4 and a processing unit 5 .
[0020] The pulsed light source 1 emits a beam of probe light, which is transmitted to the input port of the first optical crossbar switch 2 by an optical fiber, and is divided into multiple beams by the first optical crossbar switch 2, and simultaneously in the first optical crossbar switch 2 Each beam of detection light is calibrated, and the calibrated detection light is irradiated on the surface of the measured object 6, and is received by the sensor 4 after reflection, and after the detection light reflected on the measured object 6 is received by the sensor 4, One path is synthesized by the second crossbar switch 3 and transm...
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The invention discloses a device for measuring an object shape. The device comprises a light source, a first optical crossbar switch, a sensor and a processing unit, a probe light emitted by a light source is calibrated in the first optical crossbar switch, and the calibrated calibrated probe light irradiates on the surface of an object to be measured, is received by a sensor after refection, andenters into a processing unit. When using, we use the time difference between the emitted light and the received light to judge the distance of a light spot from a light source, the coordinates of thelight spot are calculated according to the coordinates of the light source and the angle of the detected light, the probe light irradiates multiple positions on the measured object, the coordinates of the light spot are calculated, and we can get the shape of the measured object. Light cross-extraction calibrates the emitted light, we can ensure which position the received light is, a qualified shape measures the shape of the object, the measurement speed is greatly improved, the accuracy of a clock is high enough, and our measurement accuracy is also guaranteed.
Description
technical field [0001] The invention relates to the technical field of measurement, and more particularly relates to a device and a measurement method for measuring the distance, shape and speed of an object. Background technique [0002] At present, there are several types of equipment for measuring the shape of objects on the market. One is a three-coordinate measuring instrument. This equipment uses the movement of the probe head to make contact with the object to be measured, and then obtains the coordinates of each measurement point to form the coordinates of the object to be measured. The point cloud of the contour to obtain the shape of the measured object is the most accurate measurement method, but because the detection head moves on the mobile platform, but the moving speed of the mobile platform is limited, the measurement speed is relatively slow, and the three-coordinate measuring instrument higher cost. [0003] The other is to use a light source to hit the me...
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IPC IPC(8): G01B11/24
CPCG01B11/24
Inventor 孙志军
Owner 孙志军