Hall sensor device with temperature compensation

Abstract

The invention discloses a Hall sensor device with temperature compensation. The Hall sensor device comprises a power supply circuit, a main Hall sensor circuit, an auxiliary Hall sensor circuit and an output filter circuit; the output end of the auxiliary Hall sensor circuit is used for driving a Hall sensor coil; each Hall sensor circuit comprises a Hall sensor, a voltage limiting circuit, a same-direction proportion circuit and a driving power amplification circuit which are connected in sequence; and the output ends of the two driving power amplification circuits are respectively connected with the output filter circuit. The Hall sensor device has a power supply reverse connection protection function and a function of inhibiting external power supply fluctuation, has a function of reducing power supply ripples, has a same-direction proportion circuit function, has a function of suppressing electromagnetic compatibility, has a function of inhibiting electromagnetic radiation, has a function that a coil magnetic field of the sensor and an external bus are used for forming a closed-loop system, and has a function of automatically compensating the temperature performance is realized.

Description

technical field [0001] The invention relates to the technical field of sensor circuits, in particular to a temperature-compensated Hall sensor device. Background technique [0002] At present, the voltage sensor used by the missile tractor to control the motor usually uses a Hall sensor to sense the size of the motor current sensor, and then amplifies the voltage, and then performs signal standardization processing to convert the motor current into a 0-5V standard voltage signal. This circuit has the following disadvantages: [0003] (1) The power supply voltage is a voltage source, which cannot adapt to temperature changes; [0004] (2) Poor anti-interference ability; [0005] (3) Poor ability to resist power supply voltage interference; [0006] (4) Low adaptability to electromagnetic compatibility; [0007] (5) It is an open-loop measurement with low sampling accuracy. [0008] Therefore, the existing sensor circuits cannot meet the technical requirements of modern m...

AI Technical Summary

Problems solved by technology

[0003](1) The power supply voltage is a voltage source and cannot adapt to temperature changes;

[0004](2) Poor anti-interference ability;

[0005] (3) Poor ability to resist power supply voltage interference;

[0006](4) Low adaptability to electromagnetic compatibility;

[0007](5) is an open-loop measurement with low sampling accuracy

[0008] Therefore, the existing sensor circuits cannot meet the technical requirements of modern military electronic control systems

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