CN208140874U - A kind of Hall effect tester - Google Patents
A kind of Hall effect tester Download PDFInfo
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- CN208140874U CN208140874U CN201820041860.3U CN201820041860U CN208140874U CN 208140874 U CN208140874 U CN 208140874U CN 201820041860 U CN201820041860 U CN 201820041860U CN 208140874 U CN208140874 U CN 208140874U
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- hall effect
- analog converter
- effect tester
- digital analog
- master control
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Abstract
The utility model discloses a kind of Hall effect tester, including：Temperature sensor, digital analog converter, master control borad and computer processor, the temperature sensor connect the digital analog converter, and the digital analog converter is connect with master control borad, and the master control borad is connected to the computer processor.The Hall effect tester of the utility model embodiment, by measuring to environment temperature, real-time calibration environment temperature reflects the size of temperature during Hall test in real time, convenient for analyzing measurement situation of the different materials under specific temperature conditions.
Description
Technical field
The utility model relates to a kind of Hall effect testers.
Background technique
Test Hall effect in essence be movement charged particle in magnetic field by caused by Lorentz force action
Deflection.When charged particle (electronics or hole) is restrained in the material, this deflection results in the side in vertical current and magnetic field
The accumulation for generating positive and negative charge upwards, to form additional transverse electric field, i.e. Hall field.Under different temperatures, measured material
The Hall effect of performance is also different.The Hall coefficient that material shows must be the Hall coefficient under some specific temperature.
Therefore, it realizes and the real time temperature of Hall effect tester during the work time is measured, Hall test experiment is necessary.
Utility model content
In view of the above problems, the utility model is proposed to overcome the above problem in order to provide one kind or at least partly solve
A kind of certainly Hall effect tester of the above problem.
The utility model provides a kind of Hall effect tester, including：Including：Temperature sensor, digital analog converter, master control
Plate and computer processor, the temperature sensor connect the digital analog converter, and the digital analog converter is connect with master control borad,
The master control borad is connected to the computer processor.
In one embodiment, it can be, in the Hall effect tester, the temperature sensor output end connects
Connecting resistance R35, for measuring the voltage value of resistance R35.
In one embodiment, it can be, in the Hall effect tester, the resistance R35 is connected in parallel electricity
Hold C61 and capacitor C62, for being filtered to voltage signal.
In one embodiment, it can be, in the Hall effect tester, the voltage of the temperature sensor is believed
Number output end connects the acquisition signal input terminal of the digital analog converter, and the digital analog converter is by the simulation of the voltage of input
Signal is converted to digital signal, and is transferred to the master control borad.
In one embodiment, it can be, in the Hall effect tester, the simulation electricity of the digital analog converter
Energization input is pressed to connect LC filter circuit.
In one embodiment, it can be, in the Hall effect tester, the number electricity of the digital analog converter
Energization input is pressed to connect capacitor filter.
In one embodiment, it can be, in the Hall effect tester, the positive and negative ginseng of the digital analog converter
Examine voltage terminal connection reference voltage circuit, the input terminal Ref connection external reference power supply of the reference voltage circuit.
In one embodiment, it can be, in the Hall effect tester, the master control borad and the computer
Processor is connected by serial ports.
In one embodiment, it can be, in the Hall effect tester, the computer processor is connected with
Display screen.
The utility model has the advantage that compared with prior art：
Hall effect tester provided by the embodiment of the utility model, by connecting temperature in Hall effect tester master control borad
Sensor is spent, the temperature of current environment is measured, when being directed to different testings of materials convenient for Hall effect tester, front ring is worked as in calibration
Border temperature reflects the size of temperature during Hall test in real time, analyzes measurement of the different materials under specific temperature conditions
Value.Meanwhile the Hall effect tester of the utility model embodiment, temperature sensor acquire the voltage value of resistance, pass through conversion
Temperature value under current environment is obtained, real-time display is carried out in the computer processor, grasps experimental situation convenient for experimenter
Situation.
Below by drawings and examples, the technical solution of the utility model is described in further detail.
Detailed description of the invention
Attached drawing is used to provide a further understanding of the present invention, and constitutes part of specification, practical with this
Novel embodiment is used to explain the utility model together, does not constitute limitations of the present invention.In the accompanying drawings：
Fig. 1 is the Hall effect tester structural schematic diagram of the utility model；
Fig. 2 is the circuit diagram of the temperature sensor of the Hall effect tester of the utility model；
Fig. 3 is the circuit diagram of the digital analog converter of the Hall effect tester of the utility model.
Specific embodiment
Exemplary embodiments of the present disclosure are described in more detail below with reference to accompanying drawings.Although showing the disclosure in attached drawing
Exemplary embodiment, it being understood, however, that may be realized in various forms the disclosure without should be by embodiments set forth here
It is limited.On the contrary, these embodiments are provided to facilitate a more thoroughly understanding of the present invention, and can be by the scope of the present disclosure
It is fully disclosed to those skilled in the art.
In order to solve the problems in the existing technology, the utility model embodiment provides a kind of Hall effect tester.
Shown in referring to Fig.1, the utility model embodiment provides a kind of Hall effect tester, including：Temperature sensor 1,
Digital analog converter 2, master control borad 3 and computer processor 4, the temperature sensor 1 connect the digital analog converter 2, the number
Mode converter 2 is connect with master control borad 3, and the master control borad 3 is connected to the computer processor 4.
Hall effect tester provided by the embodiment of the utility model, by connecting temperature in Hall effect tester master control borad
Sensor is spent, the temperature of current environment is measured, when being directed to different testings of materials convenient for Hall effect tester, front ring is worked as in calibration
Border temperature reflects the size of temperature during Hall test in real time, analyzes measurement of the different materials under specific temperature conditions
Value.Meanwhile the Hall effect tester of the utility model embodiment, the voltage value of resistance is acquired by temperature sensor, is passed through
Conversion obtains temperature value under current environment, carries out real-time display in the computer processor, grasps experiment convenient for experimenter
Ambient conditions.
In one embodiment, it can be, in the Hall effect tester, the temperature sensor output end connects
Connecting resistance R35, for measuring the voltage value of resistance R35.
In one embodiment, it can be, in the Hall effect tester, the resistance R35 is connected in parallel electricity
Hold C61 and capacitor C62, for being filtered to voltage signal.
It can be in a specific embodiment referring to Fig. 2, the temperature sensor selects ADS590 current-mode sense
Device is connected to the electricity by the voltage output end VCC- that external power supply is connected to the voltage input end VCC+, AD590 of AD590
R35 is hindered, the voltage value of resistance R35 is measured, and digital analog converter is sent to by output voltage terminals AIN014.More specifically,
The resistance R35 is also connected in parallel capacitor C61 and capacitor C62, for being filtered to voltage output signal.This is practical new
In type embodiment, temperature sensor selects AD590 amperometric sensor.Due to AD590 amperometric sensor have it is linear it is excellent,
Performance stabilization, high sensitivity, without compensation, thermal capacity is small, strong antijamming capability, can remote temperature measurement and easy to use etc. excellent
Point, using the constant-current characteristics of AD590 amperometric sensor, so output signal is not influenced by supply voltage and conductor resistance,
Enhance the data stability of temperature sensor circuit.
In one embodiment, it can be, in the Hall effect tester, the voltage of the temperature sensor is believed
Number output end connects the acquisition signal input terminal of the digital analog converter, and the digital analog converter is by the simulation of the voltage of input
Signal is converted to digital signal, and is transferred to the master control borad.
In one embodiment, it can be, in the Hall effect tester, the simulation electricity of the digital analog converter
Energization input is pressed to connect LC filter circuit.
In one embodiment, it can be, in the Hall effect tester, the number electricity of the digital analog converter
Energization input is pressed to connect capacitor filter.
In one embodiment, it can be, in the Hall effect tester, the positive and negative ginseng of the digital analog converter
Examine voltage terminal connection reference voltage circuit, the input terminal Ref connection external reference power supply of the reference voltage circuit, be used for pair
Analog-digital converter provides reference voltage.
Referring to shown in Fig. 3, in a specific embodiment, can be, the digital analog converter selects ADS1256 chip,
The output voltage terminals AIN014 of the temperature sensor may be coupled to the acquisition input terminal of the ADS1256 chip
The analog voltage power supply of any one terminal in AIN0-AIN7, the ADS1256 chip uses external power supply, in external power supply
Input terminal connects LC filter circuit, carries out noise reduction process, the digital voltage external power supply of the ADS1256 chip to voltage signal
Input terminal connects capacitor filter, and the signal output terminal of the ADS1256 chip is connected to master control borad, the digital-to-analogue conversion
The positive and negative reference voltage terminal of device connects reference voltage circuit, the input terminal Ref connection external reference of the reference voltage circuit
Power supply, for providing reference voltage to analog-digital converter.Specifically, can be, the master control borad includes STM32F103 micro process
Device (not shown), the piece of the ADS1256 chip select CS, data preparation DRDY, data output DOUT, data input DIN
It is connect respectively with the corresponding pin of STM32F103 microprocessor with serial clock SCLK.
In one embodiment, it can be, in the Hall effect tester, the master control borad and the computer
Processor is connected by serial ports.Specifically, can be, the STM32F103 microprocessor and the computer processor serial ports
Connection, the digital data transmission after voltage analog signal is converted give the computer processor.
In one embodiment, it can be, in the Hall effect tester, the computer processor is connected with
Display screen.Pass through the current environmental temperature of display screen real-time display temperature sensor measurement.It will be measured by computer processor
Voltage value be converted into corresponding temperature value, shown in display screen.
Embodiment described above is only preferred embodiments for fully illustrating the utility model, the utility model
Protection scope it is without being limited thereto.Those skilled in the art made equivalent substitute or change on the basis of the utility model
It changes, both is within the protection scope of the present invention.The protection scope of the utility model is subject to claims.
Claims (9)
1. a kind of Hall effect tester, which is characterized in that including：Temperature sensor, digital analog converter, master control borad and computer
Processor, the temperature sensor connect the digital analog converter, and the digital analog converter is connect with master control borad, the master control borad
It is connected to the computer processor.
2. Hall effect tester as described in claim 1, which is characterized in that the temperature sensor output end connects resistance
R35, for measuring the voltage value of resistance R35.
3. Hall effect tester as claimed in claim 2, which is characterized in that the resistance R35 be connected in parallel capacitor C61 and
Capacitor C62, for being filtered to voltage signal.
4. Hall effect tester as described in claim 1, which is characterized in that the voltage signal of the temperature sensor exports
End connects the acquisition signal input terminal of the digital analog converter, and the digital analog converter turns the analog signal of the voltage of input
It is changed to digital signal, and is transferred to the master control borad.
5. Hall effect tester as described in claim 1, which is characterized in that the analog voltage of the digital analog converter is powered
Input terminal connects LC filter circuit.
6. Hall effect tester as described in claim 1, which is characterized in that the digital voltage of the digital analog converter is powered
Input terminal connects capacitor filter.
7. Hall effect tester as described in claim 1, which is characterized in that the positive negative reference voltage of the digital analog converter
Terminal connects reference voltage circuit, the input terminal Ref connection external reference power supply of the reference voltage circuit.
8. Hall effect tester as described in claim 1, which is characterized in that the master control borad and the computer processor
It is connected by serial ports.
9. Hall effect tester as described in claim 1, which is characterized in that the computer processor is connected with display
Screen.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820041860.3U CN208140874U (en) | 2018-01-11 | 2018-01-11 | A kind of Hall effect tester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820041860.3U CN208140874U (en) | 2018-01-11 | 2018-01-11 | A kind of Hall effect tester |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208140874U true CN208140874U (en) | 2018-11-23 |
Family
ID=64284234
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820041860.3U Active CN208140874U (en) | 2018-01-11 | 2018-01-11 | A kind of Hall effect tester |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208140874U (en) |
-
2018
- 2018-01-11 CN CN201820041860.3U patent/CN208140874U/en active Active
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