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Resetting method for pointer of automobile instrument

A technology for automobile instruments and pointers, applied in vehicle parts, transportation and packaging, etc., can solve problems such as shortening the life of stepper motors, and achieve the effect of eliminating vibration and solving stalled rotors.

Active Publication Date: 2012-02-15
LAUNCH SOFTWARE DEV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The object of the present invention is to provide a method for zeroing the pointer of an automobile meter, which can solve the problem of stalling when the car ignition meter is reset to zero, and eliminate the instrument pointer vibration, noise, and life reduction of the stepping motor during the process of meter reset. small defect

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  • Resetting method for pointer of automobile instrument
  • Resetting method for pointer of automobile instrument
  • Resetting method for pointer of automobile instrument

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Embodiment Construction

[0019] In order to further illustrate the technical means adopted by the present invention and its effects, the following describes in detail in conjunction with preferred embodiments of the present invention and accompanying drawings.

[0020] Such as Figure 2-4 As shown, the present invention provides a kind of pointer reset method of automobile instrument, and it comprises the steps:

[0021] Step 1. Set a rotary potentiometer 10 on the rotating shaft 22 of the stepping motor 20 for controlling the automobile instrument pointer 30, and electrically connect the rotary potentiometer 10 to the instrument control system 40. The rotary potentiometer 10 has a resistor body and a movable contact arranged on the resistor body and linked with the rotating shaft of the stepping motor 20 .

[0022] Step 2. Apply voltage to both ends of the resistor respectively.

[0023] Step 3. When the vehicle speed is zero immediately after the vehicle is ignited, the instrument control system 4...

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Abstract

The invention provides a resetting method for a pointer of an automobile instrument. The method comprises the following steps that: 1, a rotary potentiometer is arranged on a rotary shaft, which is used for controlling the pointer of the automobile instrument, of a stepping motor, wherein the rotary potentiometer is electrically connected with an instrument control system and comprises a resistor body and a movable contact which is arranged on the resistor body and is linked with a rotation shaft of the stepping motor; 2, voltage is applied to two ends of the resistor body; and 3, when a vehicle is just ignited and the speed is zero, the instrument control system acquires a voltage signal of the movable contact, acquires the slip angle of the pointer relative to the zero point according to the acquired voltage signal of the movable contact, and controls the stepping motor to drive the pointer to rotate a corresponding angle to zero. By the method, the problem of lock during automobile ignition and resetting of instrument can be solved, and defects of vibration and noise of the instrument pointer during resetting of the instrument and shortening of service life of the stepping motor are eliminated.

Description

technical field [0001] The invention relates to the technical field of automobiles, in particular to a pointer reset method of an automobile instrument. Background technique [0002] With the rapid development and wide application of electronic information technology in various fields and industries, the digitization and intelligence of instruments are also accelerating. Modern automotive instrumentation is undergoing a transformation from analog circuit electronic to stepping electric. The core control of the stepping electric vehicle instrument is the stepping motor, which is a stepping electrical device controlled by pulses. When the stepping motor receives a pulse signal, it drives the motor to rotate at a fixed angle, thereby driving the pointer of the vehicle instrument Rotate a fixed angle. [0003] Due to the inertia, resonance, and sudden power failure of the stepper motor of the automobile instrument and its load, the motor may lose its step during long-term opera...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60K35/00
Inventor 刘均林继
Owner LAUNCH SOFTWARE DEV
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