Detection processing system for judging whether paper moves and detection method thereof

Abstract

The invention provides a detection processing system for judging whether paper moves or not and a detection method thereof. The system comprises a paper conveying device used for conveying paper to move forwards by at least one distance, an initialization sampling module, a data processing module and a result judgment module. The initialization sampling module collects AD analog-to-digital conversion values of the paper conveying device when the paper conveying device conveys the paper or no paper exists or the paper is jammed in a static mode through a sensor on the initialization sampling module. The data processing module is used for sampling the AD analog-to-digital conversion values acquired by the initialization sampling module at intervals; the result judgment module receives sampling information of the data processing module and is used for comparing the value of the current sampling point with the value of the last sampling point, and if the current sampling value is within acertain up-down amplitude range of the last sampling value, it is judged that the primary paper is static and effective; it is further judged that no paper exists on the paper conveying device or thepaper is still and jammed when it is further judged that the paper is still and effective for multiple times; and the paper jam phenomenon can be automatically recognized, and malignant damage of paper jam can be prevented in time.

Description

【Technical field】 [0001] The invention relates to a paper detection technology in the printing process, in particular to a detection processing system and a detection method for judging whether the paper is moving. 【Background technique】 [0002] During the paper feeding process of label and receipt printers, it is necessary to judge whether the paper is moving, so as to distinguish the phenomenon of jammed paper. The previous processing method is to judge whether the paper is jammed or not by visual observation. Since the operator is used to judge whether the paper is jammed, there is a defect of slow operation response, and it is too late to fix the error, causing the paper to be stuck in the groove of the rubber roller, and even damage the gear. , Cots and other structures. [0003] Therefore, it is necessary for the printer to detect the position and state of the paper by setting detection equipment during the paper conveying process. Some printing equipment rely on a s...

AI Technical Summary

Problems solved by technology

[0004] However, the light-emitting device and the receiving device in the electric eye equipment are arranged adjacent to each other, and the receiving device works by receiving the diffuse reflection light generated by the paper conveyed on the conveyor belt; therefore, this is greatly dependent on the conveyed The light reflectivity of the detected paper itself, including reflective intensity and light absorption, etc., then, at some point, it is possible that the circuit connected to the receiving device cannot be activated due to insufficient reflectivity of the paper, resulting in a problem of paper shortage. False positive problem

For example, if the paper to be conveyed is black cardboard, or the paper is pure black on the back, because black has the worst light reflection, the receiving device will often fail to activate the connected circuit because it cannot receive sufficient reflected light. This can send out false alarms that are out of paper, making follow-up difficult

[0005] Therefore, the current use of naked eyes or electric eye devices to judge whether there is a paper jam cannot effectively ensure the continuous and reliable operation of the printer.

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