Automotive meter pointer crimping position detection module and detection method
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A technology for automobile instrumentation and crimping position, applied in instruments, measuring devices, etc., can solve the problems of low production efficiency, easy damage to instruments, inaccurate measurement of crimping depth of instrument pointers, etc., to meet the requirements of good products and improve product compatibility , Set various parameters convenient and quick effect
Active Publication Date: 2017-05-17
AEROSPACE HI TECH HLDG GROUP
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[0003] The purpose of the present invention is to solve the problem of inaccurate measurement of the crimping depth of the instrument pointer, which leads to easy damage to the instrument and low production efficiency, and provides a detection module and detection method for the crimping position of the pointer of the automobile instrument
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specific Embodiment approach 1
[0045] Specific implementation mode one: combine Figure 1 to Figure 3 To illustrate this embodiment, the automobile instrument pointer crimping position detection module described in this embodiment includes the following units:
[0046]Pressure signal acquisition unit: collect and store the pressure value between the automobile instrument pointer and the motor shaft according to the sampling period;
[0047] Peak judging unit: judging whether the collected pressure value is greater than Fmax, and starting the alarm unit when the judging result is yes, and starting the pressure difference calculation unit and the peak judging unit when the judging result is no;
[0048] Alarm unit: send an alarm signal to the alarm device;
[0049] Pressure difference calculation unit: calculate the difference between the maximum pressure and the minimum pressure in the latest T time, that is, the pressure difference;
[0050] Pressure difference judging unit: judging whether the pressure d...
specific Embodiment approach 2
[0057] Specific Embodiment 2: This embodiment is a further limitation of the automobile instrument pointer crimping position detection module described in Embodiment 1. In this embodiment, the detection module further includes:
[0058] Display unit: display the pressure value collected by the pressure signal collection unit on the screen.
specific Embodiment approach 3
[0059] Specific Embodiment Three: This embodiment is a further limitation of the automobile meter pointer crimping position detection module described in Embodiment 1. In this embodiment, the detection module further includes:
[0060] The parameter setting unit is used to provide an external data input port for setting parameters Fmax, Fmin, ΔF, T, F0 or sampling period.
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Abstract
The invention provides a detection module and a detection method for the crimping position of a vehicle instrument pointer, and relates to the installation technology of the vehicle instrument pointer industry. According to the technical scheme of the invention, the problem in the prior art that due to the inaccurate measurement on the crimping depth of the pointer of a vehicle instrument, the vehicle instrument is easily damaged and low in production efficiency can be solved. The structurally limiting means and the artificially judging means are not adopted. When the overall curve of pressure signals is monitored, the characteristic key positions of the curve of pressure signals are judged through the built-in algorithm at the same time. When the crimping depth is within an abnormal range, an operator is notified first time of the abnormal change of the curve. The monitoring range and the condition can be freely set. The invention provides not only a display platform, but also an alerting tool. The above application brings actual benefits to enterprises and facilitates the research for researchers no matter in the industrial field or in the research field. In this way, instrument pointers, instrument panels and motors can be well protected, and the one-shot crimping success rate is improved. Therefore, the production efficiency is increased. The detection module and the detection method can be applied to the crimping operation on the pointers of vehicle instruments or other instruments.
Description
technical field [0001] The invention relates to the installation technology of instrument pointers in the automotive electronics industry. Background technique [0002] In the automotive electronics industry, the instrument pointer is installed on the shaft of the motor, and the motor drives the pointer to rotate. When installing the pointer, it is necessary to judge the crimping depth. figure 2 Shown is normal crimp depth, excessive crimp depth can cause pointer or motor shaft damage. The traditional pointer crimping depth control adopts the method of structural limit plus manual judgment, or the method of monitoring the pressure. In the method of structural limit plus manual judgment, in order to protect the fragile dial and the smoothness of the dial, the structural parts cannot be selected from hard and hard-to-wear materials such as metal, but use limit pieces made of soft materials such as plastic or plexiglass for judgment. Long-term use, the surface of the limit p...
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