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Hall sensor

A Hall sensor and eliminator technology, applied in the direction of instruments, measuring magnetic variables, measuring devices, etc., can solve the problems of inconvenient packaging, affecting the expansion of use, increasing the chip area of ​​Hall sensors, etc., to avoid the use of large capacitors, Effects of improving operational reliability and stabilizing sensitivity

Inactive Publication Date: 2014-04-16
SHAANXI JOIN CREATE SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The current Hall sensor uses sampling and holding and Schmitt trigger for sampling and output control, but as we all know, a large capacitor is needed in the sampling and holding circuit, which increases the chip area of ​​the Hall sensor and brings inconvenience to the package. , which also affects subsequent extended use

Method used

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  • Hall sensor

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Embodiment Construction

[0010] The following combined with the attachment and embodiments to explain the present invention more detailed.

[0011] As shown in the figure, the present invention is a Hall sensor, including a Hall disk, the input of the output disruption of the Hall disk, the output of the disorder elimination device, the output of the amplifier, the magnetic stasis comparator, magneticThe stagnation ratio is connected to the output control unit, where the disorders, the stagnation comparator, and the output control unit are controlled by the same clock signal, and the output control unit and the stagnation comparator load a protective control unit forOwnership protection to prevent chip damage.

[0012] The work process of the present invention is:

[0013] The voltage signal generated by the Hall disk induction magnetic field is eliminated by disorders after disorders, and then enlarged in the amplifier, and then input to the stagnation comparator to keep the sampling output.

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Abstract

A Hall sensor comprises a Hall plate. The output of the Hall plate is connected with the input of a detuning canceller, the output of the detuning canceller is connected with an amplifier, the output of the amplifier is connected with a hysteresis comparator, and the hysteresis comparator is connected with an output control unit. The detuning canceller, the hysteresis comparator and the output control unit are controlled by the same clock signal. The hysteresis comparator replaces a sampling and holding unit and a schmitt trigger, use of a large capacitor is avoided, and the area of a chip is effectively reduced. Meanwhile, the sensitivity of the sensor is stabilized, and the work reliability of the sensor is improved.

Description

[0001] Technical field [0002] The invention involves a magnetic field sensor and specially involves a Hall sensor. Background technique [0003] Hall sensor is a magnetic field sensor based on Hall effect.The Hall effect is a type of magnetoelectric effect. This phenomenon was discovered by A.H.HALL (1855-1938) in 1879 when studying metal conductive agencies.Later, it was found that semiconductor and conductive currents also had this effect, and the Hall effect of semiconductors was much stronger than metal. The various Hall components made by this phenomenon were widely used in industrial automation technology, detection technology and information processing.aspect.Hall effect is the basic method of studying the performance of semiconductor materials.The Hall coefficient measured by Hall effect experiment can judge important parameters such as conductive type, load concentration, and load migration rate of semiconductor materials. [0004] The current Hall sensor uses sampling...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R33/07
Inventor 不公告发明人
Owner SHAANXI JOIN CREATE SCI & TECH