Non-contact magnetic transmission absolute angle sensor for steering system of automobile

A vehicle steering system and absolute angle technology, applied in the field of sensors, can solve problems such as small measurement range, high installation requirements, and need for light sources, and achieve the effects of high position repeatability, low environmental requirements, and wide measurement range.

Inactive Publication Date: 2009-12-16
WUHAN UNIV OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The resistive steering angle sensor is composed of a resistor and a sliding contact, and its defects are: first, it is sensitive to temperature; second, the deviation is relatively large, about ±1 degree; third, the measurement range is too small, only ±100 degrees
The defects of the photoelectric steering angle sensor are: first, the installation requirements are high and a light source is needed; second, the price is expensive

Method used

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  • Non-contact magnetic transmission absolute angle sensor for steering system of automobile
  • Non-contact magnetic transmission absolute angle sensor for steering system of automobile
  • Non-contact magnetic transmission absolute angle sensor for steering system of automobile

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Embodiment Construction

[0021] The non-contact magnetic transmission absolute angle sensor of the automobile steering system provided by the invention has a structure such as Figure 1 to Figure 3 As shown: it is composed of a magnetic cylinder 1, a CPU control unit 7, a magnetic wheel mechanism and a Hall sensor. Wherein: the magnetic wheel mechanism is composed of two driven magnetic wheels and a driving magnetic wheel 5 engaged with them, and a magnetic steel 1 is installed at the center of each driven magnetic wheel. Magnetic steel 1 installation method: Drill a hole in the center of the magnetic wheel, put the magnetic steel in and stick it with universal glue. The driving magnetic wheel 5 is fixed on the steering column 8 . A Hall sensor is installed near each magnetic steel, and the Hall sensor is connected with the CPU control unit 7 through a data line.

[0022] Install a Hall sensor at a distance of 1.5-2.2 mm from the magnetic steel, and the Hall sensor is connected to the CPU through a ...

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Abstract

The invention relates to a non-contact magnetic transmission absolute angle sensor for a steering system of an automobile, comprising a magnetic cylinder (1), a CPU control unit (7), a magnetic wheel mechanism and Hall sensors, wherein the magnetic wheel mechanism comprises two driven magnetic gears and a driving magnet wheel (5) which is in mesh connection with the driven magnetic gears, and one magnetic steel (1) is installed on the central part of each driven magnetic gear; the driving magnet wheel is fixed on a steering column (8); and one Hall sensor is installed adjacently to each magnetic steel, and the Hall sensors are connected with the CPU control unit by data wires. The invention has the advantages of low requirement on environment, high cost performance, wide range of measurement, insensitivity to error caused by temperature, convenient installation, etc.

Description

technical field [0001] The invention relates to a sensor, in particular to a non-contact magnetic transmission absolute angle sensor of an automobile steering system, which is a sensor used for measuring the rotation angle in the automobile steering system. Background technique [0002] Currently used resistive and photoelectric steering angle sensors. [0003] The resistive steering angle sensor is composed of a resistor and a sliding contact. Its defects are: first, it is sensitive to temperature; second, the deviation is relatively large, about ±1 degree; third, the measurement range is too small, only ±100 degrees. [0004] The photoelectric steering angle sensor consists of a photosensitive element, a light-transmitting film and a corresponding signal processing circuit. The photoelectric sensor includes at least two photosensitive elements, a light-transmitting film and a corresponding signal processing circuit. The light-transmitting film refers to a film in which so...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01B7/30
Inventor 杨胜兵过学迅马威王俊
Owner WUHAN UNIV OF TECH
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