Vision-based automatic detection system for laser line projector
A laser line throwing instrument and automatic detection technology, applied in the field of intelligent systems and machine vision, can solve problems such as unfavorable system replacement positions, and achieve the effects of improving detection efficiency, convenient system assembly and good stability
Active Publication Date: 2019-09-10
SOUTHEAST UNIV
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Problems solved by technology
This technology mainly has the following two problems: the first is that for a laser line projector with multiple horizontal laser lines and vertical laser lines, it takes multiple rotations to detect all the accuracy indicators; the second is that all CCDs of this technology Both are fixed on the wall, which is not conducive to the replacement of the system
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[0028] Below in conjunction with accompanying drawing and embodiment the present invention will be further described:
[0029] Such as Figure 1-5 As shown, a vision-based automatic detection system for a laser line thrower disclosed in the embodiment of the present invention includes a laser line thrower 2 to be detected, a platform 1 in the middle, and a horizontal board 3 and four vertical boards 4 around it. . The laser line projector 2 to be tested is fixed on the middle platform 1, and the horizontal laser line projected by it can be projected on the standard scale plate 6 directly in front; 1-1.2m directly in front of the laser line projector 2 is A horizontal board 3 is fixed by a bracket, and there is a calibrated scale board at its two ends and in the middle; four vertical boards 4 are around the laser line throwing instrument, fixed by a bracket, and each of its two ends and the middle are calibrated. There is a calibrated standard scale plate 6; the three standar...
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The invention discloses a vision-based automatic detecting system of a laser demarcation device. The automatic detecting system comprises a laser demarcation device to be detected, a platform for placing the laser demarcation device, four vertical plates and one traverse plate, wherein the traverse plate is placed right ahead of the demarcation device, and the four vertical plates are positioned in four directions of the circumference of the demarcation device; at least a scale plate is arranged at each of the two ends and in the middle of each of the traverse plate and vertical plates; a camera is arranged in front of the scale plate and connected with a Raspberry Pi; the Raspberry Pi is connected with an LAN switch, receives the instruction of an upper computer and transmits the acquired images to the upper computer; and the upper computer obtains the precision indices of the laser demarcation device through image processing. The vision-based automatic detecting system acquires the position information of laser lines and scale lines through a machine vision detection technique, can reduce the production cost, also avoids human error and injury to human eyes in the detection procedure, has convenient assembly, reasonable structure and good stability, and can absolutely meet the requirements on precision indices.
Description
technical field [0001] The invention relates to a detection system of a laser line thrower, in particular to a vision-based detection system of a laser line thrower, belonging to the technical fields of machine vision and intelligent systems. Background technique [0002] Laser line meter, also known as laser line marking instrument, laser level, etc., is a new type of non-contact line marking measuring instrument. This instrument is easy to use and low in cost, and it is a precision measuring instrument for benchmarking. Its working principle is to use a semiconductor laser diode to emit laser light with a wavelength of 635nm, and then penetrate through a cylindrical lens or a glass rod, thereby projecting red horizontal laser lines and vertical laser lines for reference calibration. In recent years, some green and blue laser line projectors have appeared on the market, and have achieved good results. [0003] After the precision-tested laser line projector reaches a stab...
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IPC IPC(8): G01C25/00
Inventor 聂云聪夏思宇
Owner SOUTHEAST UNIV