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Inertial Zeroing Method of Automobile Meter Pointer

A technology for automobile meters and pointers, which is applied in the field of zeroing of automobile meter pointers, can solve problems such as increasing hardware circuit settings, and achieve the effect of avoiding rebound action.

Active Publication Date: 2016-02-24
AEROSPACE HI TECH HLDG GROUP
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide an inertial zeroing method for automobile instrument pointers to solve the problem that the existing automobile instrument pointer origin return method increases the hardware circuit setting

Method used

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  • Inertial Zeroing Method of Automobile Meter Pointer
  • Inertial Zeroing Method of Automobile Meter Pointer

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specific Embodiment approach 1

[0008] Specific implementation mode 1: the following combination figure 1 This embodiment will be described in detail. This embodiment includes the following steps: 1. Power on the stepper motor that drives the indicator of the car; at the same time, set the number of reverse pulse signals n to 0 in the register; 2. The stepper motor driver applies a reverse direction to the stepper motor The pulse signal makes the pointer of the automobile instrument move one step to the origin of the automobile instrument, and increases n by 1. The single-chip microcomputer judges whether the number of reverse pulse signals applied by the stepper motor driver to the stepper motor n is equal to N; N is equal to 9; The stepping motor in the present invention uses a Delta dashboard motor of model SA20S36F-007A, and the stepping angle of the motor is 10 degrees ± 0.5 degrees. This type of stepping motor has two sets of upper and lower claw stages, each of which has 9 pairs of interlaced magnetic ...

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Abstract

The invention relates to a method for enabling an automobile meter needle to point zero through inertia. The method aims to solve the problem that in an existing mode for enabling an automobile meter needle to return to the original point, a hardware circuit is added. The method comprises the following steps of (1) electrifying a stepping motor driving the automobile meter needle and setting the number n of reverse pulse signals in a register to be 0, (2) exerting a reverse pulse signal to the stepping motor through a stepping motor driver to enable the automobile meter needle to move a step towards the original point of the automobile meter needle and enabling n to be 1, (3) judging if the number n of the reverse pulse signals exerted to the stepping motor by the stepping motor driver is equal to N through a single chip microcomputer, and (4) executing the step (2) if the result of the step (3) is 'no', and ending the steps if the result of the step (3) is 'yes'.

Description

Technical field [0001] The invention relates to a method for resetting the pointer of an automobile instrument. Background technique [0002] Current car instrument pointers are driven by stepper motors. The electrical parameters corresponding to the performance data of the automobile are expressed on the instrument panel by outputting electrical pulses to the stepping motor, and the indicator pointer is driven by the stepping motor. When the power supply of the automobile instrument is cut off, such as turning off the automobile engine, changing the battery, etc., the pointer of the automobile instrument loses the starting position of the origin, and the origin return operation is required. [0003] The rotation of the stepper motor runs step by step at a fixed angle (called "step angle"), and is widely used in various open loop controls. The operation of the stepper motor needs to be driven by an electronic device, which is a stepper motor driver, which converts the pulse signa...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01D3/06
Inventor 胡杨王大钊薛永刚邓雷佟大龙王宇
Owner AEROSPACE HI TECH HLDG GROUP
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