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Detection device for Hall device sensor

A technology of Hall device and detection device, which is applied in the direction of measurement device, instrument, measurement of electrical variables, etc., can solve the problem of high cost and achieve the effect of low cost

Inactive Publication Date: 2012-07-11
上海森太克汽车电子有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this detection method requires the use of two Hall device sensors, and the cost is high

Method used

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  • Detection device for Hall device sensor
  • Detection device for Hall device sensor

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Embodiment Construction

[0018] In order to better understand the technical content of the present invention, specific embodiments are given together with the attached drawings for description as follows.

[0019] Please refer to figure 1 , figure 1 Shown is a schematic diagram of a Hall device sensor detection device in a preferred embodiment of the present invention. The present invention proposes a Hall device sensor detection device, comprising: an external trigger device 100; a Hall device sensor 200 electrically connected to the external trigger device 100; a microprocessor unit 300 connected in parallel to the Hall device sensor Two ends of 200 ; the pulse width modulator 400 is electrically connected to the microprocessor unit 300 .

[0020] Pulse Width Modulation (PWM), referred to as Pulse Width Modulation, is a very effective technology that uses the digital output of a microprocessor to control analog circuits. It is widely used in measurement, communication, power control and conversion...

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Abstract

The invention provides a detection device for a Hall device sensor. The detection device comprises an external trigger device, the Hall device sensor, microprocessor units and a pulse width modulator, wherein the Hall device sensor is electrically connected to the external trigger device; the microprocessor units are connected to two ends of the Hall device sensor in parallel; and the pulse width modulator is electrically connected to the microprocessor units. By adoption of the detection device for the Hall device sensor, the signal effectiveness and accuracy of the Hall device sensor can be effectively determined.

Description

technical field [0001] The invention relates to the field of Hall device sensor detection, and in particular to a Hall device sensor detection device using a pulse width modulator. Background technique [0002] The Hall sensor is a magnetic field sensor made according to the Hall effect. The Hall effect is a kind of magnetoelectric effect, which was discovered by Hall in 1879 when he was studying the conductive mechanism of metals. Later, it was found that semiconductors and conductive fluids also have this effect, and the Hall effect of semiconductors is much stronger than that of metals. Various Hall elements made of this phenomenon are widely used in industrial automation technology, detection technology and information processing, etc. aspect. [0003] The Hall sensor is divided into a linear Hall sensor and a switch Hall sensor. The switch Hall sensor is composed of a voltage regulator, a Hall element, a differential amplifier, a Schmitt trigger and an output stage. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R35/00
Inventor 张周良范忠良沈文斋龚辉陆建新
Owner 上海森太克汽车电子有限公司