Detecting device and detecting method for vehicle outer contour

Abstract

The invention discloses a detecting device and a detecting method for vehicle outer contour. The detecting device comprises a parking part for detecting the parking of a vehicle; a left distance measuring sensor and a left driver are arranged at the left side of the parking part; the left distance measuring sensor is fixedly arranged on a left vertical rod; a right distance measuring sensor and aright driver are arranged at the right side of the parking part; the right distance measuring sensor is fixedly arranged on a right vertical rod; an electrical control module is used for forming vehicle outer contour data about left and right sides and the height of the vehicle according to the received tracks scanned by the left distance measuring sensor and the right distance measuring sensor; photoelectric signal sensors for measuring positions of tires are arranged at the lower parts of the left vertical rod or / and the right vertical rod; the photoelectric signal sensors are used for transmitting data about the distance between front and rear wheels of the vehicle into the electrical control module. The detecting device disclosed by the invention has the advantages that dependence on aPC (Personal Computer) or a dedicated circuit is not required, the whole structure is simple, the used distance measuring sensors are mature and reliable and can be easily purchased, the cost is low,and the application effect is good.

Description

technical field [0001] The invention relates to the field of car cleaning, in particular to a detection device and a detection method for the outer contour of a vehicle used in car washing equipment. Background technique [0002] The applicant once filed an invention patent with the application number CN201611214547.7 and the title "Detection method of body position for car washing". Because this measurement method needs to take pictures with a monocular or multi-purpose camera first, and then calculate the distance of the measured feature points according to the gray scale ratio between the photos, the measurement results are more accurate, and the body shape, vehicle logo, and license plate obtained by the camera The characteristic information such as color and color is also very rich, but this method relies on the machine vision technology of pattern recognition, and the calculation load of CPU is very large. The usual method is to use PC as the hardware basis, which is n...

AI Technical Summary

Problems solved by technology

Since this measurement method needs to take pictures with a monocular or multi-purpose camera first, and then calculate the distance of the measured feature points according to the gray scale ratio between the photos, the measurement results are relatively accurate. The body shape, vehicle logo, and license plate obtained by the camera , color and other characteristic information are also very rich, but this method relies on machine vision technology of pattern recognition, and the CPU has a very large amount of calculation. The usual method is to use PC as the hardware basis, which is not suitable for application on wet and moving car washing equipment; If it is necessary to realize relevant functions with ASICs and embedded software, the technical difficulty is high and the cost is high, and there is a lack of mature and applicable industrial-grade products on the market for the time being.

Therefore, although the sensor measurement method based on CCD camera and image processing technology can collect a large amount of data in an instant, the result is accurate, and it is also supported by modern electronic technology, but it contains too much redundant data when it is applied to the specific demand of car washing. There are technical and economic problems in the application

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