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Detection method for glass lifter

A glass regulator and detection method technology, applied in the testing of machine/structural components, vehicle testing, instruments, etc., to ensure the quality and realize the effect of anti-pinch function of the window

Active Publication Date: 2019-09-20
ZHANGJIAGANG WANCHENG TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there is no online automatic full inspection method of waveform characteristics by oscilloscope to detect the change of waveform characteristics of glass regulators

Method used

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  • Detection method for glass lifter

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Embodiment Construction

[0019] The technical solutions in the embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0020] ginseng figure 1 As shown, the detection method for the glass regulator in this embodiment includes:

[0021] Step 1: Connect the oscilloscope to the glass regulator, test the change of current with time in the single stroke of the glass regulator, and form a graph;

[0022] Step 2: Set the oscilloscope cursor to divide the graph into multiple consecutive first intervals t1, and combine the continuous integer first intervals to form the second interval ...

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Abstract

The invention discloses an automatic online full-detection method for a glass lifter. The method comprises that an oscilloscope tests current change with time of the glass lifter in a single elevation stroke, and a curve map is drafted; oscilloscope cursors are set to divide the curve map into multiple continuous first intervals, n continuous first intervals are combined to form second intervals, and n represents an integer; the minimum of the valley within the first interval is taken, and compared with all maximums and minimums within the second interval to obtain a comparative value; and the average frequency change rate in the first interval is taken, all the first intervals within each second interval are compared to obtain the maximum, and all the second intervals are compared to obtain the maximum. According to the method, the valley difference and waveform frequency change rate in the current detection period are detected to reflect the waveform stable degree when the glass lifter is driven to rise and fall, the requirement for whole-vehicle BCM waveform detection are met, the quality of the glass lifter is guaranteed, and a clamp proof function of a vehicle window is realized.

Description

technical field [0001] The present application relates to the field of glass regulators, in particular to an automatic online full inspection method for glass regulators. Background technique [0002] The anti-pinch function of the window is a safety-oriented configuration. When the electric door and window glass is closed, it will automatically stop after encountering a certain resistance, or change the glass upward stroke to a downward stroke, so as to prevent pinching. The principle is that a set of waveform detection device (BCM) is installed on the whole vehicle, and the waveform characteristics are detected by the BCM device. When the electric window is raised, once the electric motor current changes suddenly, the signal is transmitted to the control equipment, and the control equipment receives the signal. When an instruction is issued, the circuit will reverse the current, so that the motor stops or reverses (falls), so the window stops moving or falls, and the anti-...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M17/007G01R19/00
CPCG01M17/007G01R19/0092
Inventor 曹文长
Owner ZHANGJIAGANG WANCHENG TECH
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