Method and system for aligning upper window and lower window of paper detection scanning frame moving trolley

Abstract

The invention discloses a method and system for aligning an upper window and a lower window of a paper detection scanning frame moving trolley. The method comprises the steps: firstly setting a motion range of a moving trolley, and carrying out initialization setting on the moving trolley; keeping one window of the moving trolley static, collecting the characteristic parameters of the reciprocating motion of the other window of the moving trolley in the motion range, inputting the characteristic parameters into a trained model, calculating and recording the alignment positions of the moving trolley in the forward and backward motion directions to obtain a final alignment position; and aligning the upper window and the lower window of the moving trolley at the final alignment position. According to the invention, in the window alignment process, the AD value of the sensor is directly used as a judgment basis, so that system errors caused by sensor assembly and trolley installation are avoided; and the acquisition speed is faster and more sensitive, the alignment process is not affected by a production line, no additional auxiliary equipment facility is needed, manual regular maintenance is not needed, and the equipment cost and the labor cost are further saved.

Description

technical field [0001] The invention relates to the technical field of paper quality detection, in particular to a method and system for aligning upper and lower windows of a paper detection scanning frame moving trolley. Background technique [0002] The trolley of the scanning frame used for paper quality inspection is generally equipped with sensors such as quantitative, moisture, and thickness sensors. [0003] The windows of the upper and lower heads of the sensor need to be strictly aligned, otherwise there will be problems such as inaccurate scanning data and poor data repeatability. [0004] One of the main alignment methods for the upper and lower heads of the current scanning frame trolley is manual alignment: not only the scanning frame needs to be stopped first, but also the upper and lower head clutches of the scanning frame need to be disconnected, and then the upper and lower heads of the scanning frame are manually pushed to a rough alignment, and then with t...

AI Technical Summary

Problems solved by technology

[0006]1. Manual alignment may cause large errors, because the ultimate goal of aligning the upper and lower heads is to align the window of the sensor, and the alignment error only by visual method is not only It depends on the proficiency of the on-site operator, and also depends on whether the shell and window are misaligned when the sensor is assembled;

[0007]2. The repeatability of manual alignment is poor, resulting in a decrease in the repeatability of the AD value of the sensor;

[0008]3. Manual alignment can only be carried out after suspending production, and cannot be carried out at any time, which is inconvenient to operate;

[0011]1. A proximity switch must be installed;

[0012]2. Because the response time of the proximity switch is relatively slow, it may cause the maximum up and down head misalignment at the centimeter level, resulting in poor error and repeatability;

[0013]3. There may be flying catkins in the paper workshop, which will affect the alignment accuracy of the proximity switch, and special personnel must be regularly cleaned;

[0014]4. Because the principle of the proximity switch determines that there should be no paper or other foreign matter between the upper and lower heads of the trolley during alignment, this method is used when the paper machine is running continuously to make paper Unable to work, alignment must be done under paper break or downtime

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