A Hall circuit
By designing a Hall circuit including Hall components, operational amplifiers and voltage regulators, and using Hall integrated sensors to measure magnetic induction strength, the problems of complex equipment, high cost and inconvenient portability in the prior art are solved, and simple, accurate and economical measurement of magnetic induction strength is achieved.
Patent Information
- Application Number
- CN202421123577.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-21
- Publication Date
- 2025-04-04
- Estimated Expiration
- 2034-05-21
AI Technical Summary
The prior art equipment for magnetic induction strength measurement is complex and costly, and inconvenient to carry.
A Hall circuit including Hall components, op amps and voltage regulators is designed, and the magnetic induction intensity is measured by measuring the differential output voltage and current using a Hall integrated sensor (model UGN3501M).
It realizes simple and accurate measurement of magnetic induction strength, the circuit is compact, small in size, easy to carry, and reduces cost.
Smart Images
Figure CN222719699U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a Hall circuit. Background Art
[0002] Hall sensor is a sensor that uses the Hall effect to achieve magneto-electric conversion. It has been widely used in measurement technology, automation technology and information processing, and is usually used to measure physical quantities such as displacement, pressure, and rotation speed. The measurement of magnetic induction intensity is generally more complex equipment or devices, which are expensive and not easy to carry. Utility Model Content
[0003] The technical problem to be solved by the utility model is: in order to overcome the above technical problems, the utility model provides a Hall circuit.
[0004] The utility model solves the technical problem by adopting the following technical scheme: a Hall circuit comprises a Hall element, an operational amplifier and a voltage regulator, the Hall element comprises two control electrodes and two Hall electrodes, the two control electrodes are respectively connected to a constant current source and a ground terminal, the two Hall electrodes are connected to the input terminal of the operational amplifier, the Hall element is connected to the constant current source through the voltage regulator, the operational amplifier is a linear differential amplifier connected to the constant current source, the operational amplifier is connected to a zeroing potentiometer, the Hall element, the voltage regulator and the operational amplifier adopt a Hall integrated sensor, the model of the Hall integrated sensor is UGN3501M, and the Hall integrated sensor has eight pins; the fourth pin of the Hall integrated sensor is grounded, the third pin of the Hall integrated sensor is connected to the constant current source, the two fixed plate pins of the zeroing potentiometer are respectively connected to the fifth pin and the sixth pin of the Hall integrated sensor through a first resistor and a second resistor, the seventh pin of the Hall integrated sensor is connected to the moving plate pin of the zeroing potentiometer, the first pin and the eighth pin of the Hall integrated sensor are differential output terminals of the operational amplifier, the eighth pin of the Hall integrated sensor is connected to an adjustable resistor, and the second pin of the Hall integrated sensor is an empty pin.
[0005] A voltmeter and an ammeter are connected between the differential output terminals of the operational amplifier.
[0006] The beneficial effect of the utility model is that a Hall circuit of the utility model can realize the measurement of magnetic induction intensity. When in use, the front side of the Hall element faces the magnetic field, and the magnetic induction intensity of the magnetic field can be measured by measuring the differential output voltage and the current flowing therethrough. The circuit structure is simple, so the volume is small and it is easy to carry. BRIEF DESCRIPTION OF THE DRAWINGS
[0007] The utility model is further described below in conjunction with the accompanying drawings and embodiments.
[0008] Figure 1The utility model is a schematic diagram of the structure of a Hall circuit. DETAILED DESCRIPTION
[0009] Now the utility model is further described in detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, which only illustrate the basic structure of the utility model in a schematic manner, and therefore only show the components related to the utility model.
[0010] like Figure 1 As shown, a Hall circuit of the utility model includes a Hall element H, an operational amplifier A and a voltage regulator, wherein the Hall element H includes two control electrodes and two Hall electrodes, the two control electrodes are respectively connected to a constant current source and a ground terminal, the two Hall electrodes are connected to the input terminal of the operational amplifier A, the Hall element H is connected to the constant current source through the voltage regulator, the operational amplifier A is a linear differential amplifier connected to the constant current source, the operational amplifier A is connected to a zeroing potentiometer R3, the Hall element H, the voltage regulator and the operational amplifier A use a Hall integrated sensor, and the model of the Hall integrated sensor is UGN35 01M, the Hall integrated sensor has eight pins; the fourth pin of the Hall integrated sensor is grounded, the third pin of the Hall integrated sensor is connected to a constant current source, the two fixed pins of the zero adjustment potentiometer R3 are connected to the fifth pin and the sixth pin of the Hall integrated sensor through the first resistor R1 and the second resistor R2 respectively, the seventh pin of the Hall integrated sensor is connected to the moving pin of the zero adjustment potentiometer R3, the first pin and the eighth pin of the Hall integrated sensor are the differential output ends of the operational amplifier A, the eighth pin of the Hall integrated sensor is connected to the adjustable resistor R4, and the second pin of the Hall integrated sensor is an empty pin.
[0011] A voltmeter and an ammeter are connected between the port U1 and the port U2 of the differential output end of the operational amplifier A.
[0012] The utility model adopts a UGN3501M dual-end output linear Hall sensor. The adjustable resistor R4 is used to adjust the range, and the zero potentiometer R3 is used to compensate for unequal potentials, which can also improve linearity. The output polarity of the U1 and U2 terminals is related to the direction of the magnetic field. When the sensed magnetic field is positive (the S pole of the magnetic steel is aligned with the front of the Hall element), the output is positive; when the magnetic field is reversed, the output is negative. When the utility model is used, the front of the Hall element faces the magnetic field, and the output polarity of the U1 and U2 terminals is positive. The differential output voltage U between U1 and U2 and the current I flowing through can be measured to measure the magnetic induction intensity of the magnetic field. The Hall element uses the Hall effect to measure the magnetic induction intensity. The magnetic induction intensity B = U / KI, and K is the sensitivity of the Hall element, which is a known quantity given by the manufacturer.
[0013] Based on the above ideal embodiments of the utility model, the relevant staff can make various changes and modifications without deviating from the technical concept of the utility model through the above description. The technical scope of the utility model is not limited to the content of the specification, and its technical scope must be determined according to the scope of the claims.
Claims
1. A Hall circuit, characterized in that: The invention comprises a Hall element, an operational amplifier and a voltage regulator. The Hall element comprises two control electrodes and two Hall electrodes. The two control electrodes are respectively connected to a constant current source and a ground terminal. The two Hall electrodes are connected to the input terminal of the operational amplifier. The Hall element is connected to the constant current source through the voltage regulator. The operational amplifier is a linear differential amplifier connected to the constant current source. The operational amplifier is connected to a zero adjustment potentiometer. The Hall element, the voltage regulator and the operational amplifier adopt a Hall integrated sensor. The model of the Hall integrated sensor is UGN3501M. The Hall integrated sensor has eight pins. The fourth pin of the Hall integrated sensor is grounded, the third pin of the Hall integrated sensor is connected to the constant current source, the two fixed pins of the zero adjustment potentiometer are respectively connected to the fifth pin and the sixth pin of the Hall integrated sensor through a first resistor and a second resistor, the seventh pin of the Hall integrated sensor is connected to the moving pin of the zero adjustment potentiometer, the first pin and the eighth pin of the Hall integrated sensor are differential output terminals of the operational amplifier, the eighth pin of the Hall integrated sensor is connected to an adjustable resistor, and the second pin of the Hall integrated sensor is an empty pin.
2. The Hall circuit according to claim 1, wherein: A voltmeter and an ammeter are connected between the differential output terminals of the operational amplifier.