CN102033211A - Magnetic field measuring instrument - Google Patents
Magnetic field measuring instrument Download PDFInfo
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- CN102033211A CN102033211A CN2010105727796A CN201010572779A CN102033211A CN 102033211 A CN102033211 A CN 102033211A CN 2010105727796 A CN2010105727796 A CN 2010105727796A CN 201010572779 A CN201010572779 A CN 201010572779A CN 102033211 A CN102033211 A CN 102033211A
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Abstract
The invention provides a magnetic field measuring instrument, which is mainly characterized in that: ADuc845 is an analog/digital mixed microprocessor in which an 8052 singlechip system and an analog interface are arranged; the microprocessor is compatible with the instruction of an MCS51 series singlechip, and is also provided with an 8-stage program-controlled amplifier, a 24-bit analog converter and a 12-bit digital-to-analog converter; a linear relationship exists between voltage output by a sensor and a magnetic field, the voltage output by the sensor is input into the mixed microprocessor, and the microprocessor performs digital-to-analog conversion on a signal, operates the signal through the singlechip, and outputs the signal to a liquid crystal display screen for display; and a magnetic field signal is detected by a linear Hall sensor SS495A1 chip. The magnetic field measuring instrument has the advantages that: by combining the microprocessor with program-controlled amplification and precision digital-to-analog conversion functions with a Hall sensor, the functions of measuring the magnetic field, automatically calibrating the instrument, and automatically switching the measuring range are realized; and the instrument can be used as a measuring tool of a weak magnetic field.
Description
Technical field
The present invention relates to a kind of measuring instrument, particularly a kind of magnetic field measuring apparatus.
Background technology
Magnetic field measuring apparatus is a numeral, scientific research, and a kind of common instrument in the Physical Experiment, main method has the induction line-plot method, superconduction method, Hall effect method, fluxgate method etc.Traditional magnetic-field measurement instrument circuit complexity is carried inconvenience.
Summary of the invention
The objective of the invention is the problem that exists in the above-mentioned technology, a kind of steady magnetic field measuring instrument is provided.
The object of the present invention is achieved like this: it is characterized in that, ADuc845 is a modulus mixed type microprocessor, include 8052 Single Chip Microcomputer (SCM) system and analog interface, it has with the instruction of MCS51 series monolithic compatible, also has 8 grades of programmable amplifiers, 24 analog converters simultaneously, 12 figure place weighted-voltage D/A converters, can simplify hardware, optimization system stability, the cost performance of raising system.
By being linear relationship between sensor output voltage and the magnetic field, the voltage of sensor output inputs to the mixed type microprocessor, and little processing is at first carried out signal analog to digital conversion again after the single-chip microcomputer computing, exports to LCDs and shows.Adopting linear hall sensor SS495A1 chip detection field signal, serves as the control core with Chip Microcomputer A ue845, finishes the program control amplification of field signal, analog to digital conversion, and digital filtering, precision reaches 0.1mT after testing.Hall element adopts SS495A1, by Hall element, and amplifier, sheet resistance residual voltage corrective network three parts are formed.Sensor will be sensed magnetic field and be transformed into voltage.
Advantage of the present invention is, inherited program control amplification and accurate analog-to-digital microprocessor combines with Hall element, realized magnetic-field measurement, automatic calibration for instruments, and the automatic switching range function can be used as the survey instrument of low-intensity magnetic field.
Description of drawings:
Below in conjunction with accompanying drawing present embodiment is described further:
Fig. 1 block diagram of the present invention
Fig. 2 circuit theory diagrams of the present invention
Embodiment:
By Fig. 1, Fig. 2 as can be known, Hall element adopts SS495A1, by Hall element, amplifier, sheet resistance residual voltage corrective network three parts are formed.Sensor will be sensed magnetic field and be transformed into voltage.
ADuc845 is a modulus mixed type microprocessor, include 8052 Single Chip Microcomputer (SCM) system and analog interface, it has with the instruction of MCS51 series monolithic compatible, also have 8 grades of programmable amplifiers simultaneously, 24 analog converters, 12 figure place weighted-voltage D/A converters can be simplified hardware, optimization system stability, the cost performance of raising system.
By being linear relationship between sensor output voltage and the magnetic field, the voltage of sensor output inputs to the mixed type microprocessor, and little processing is at first carried out signal analog to digital conversion again after the single-chip microcomputer computing, exports to LCDs and shows.
Claims (1)
1. magnetic field measuring apparatus, it is characterized in that, ADuc845 is a modulus mixed type microprocessor, include 8052 Single Chip Microcomputer (SCM) system and analog interface, it has with the instruction of MCS51 series monolithic compatible, also have 8 grades of programmable amplifiers simultaneously, 24 analog converters, 12 figure place weighted-voltage D/A converters are by being linear relationship between sensor output voltage and the magnetic field, the voltage of sensor output inputs to the mixed type microprocessor, little processing is at first carried out signal analog to digital conversion again after the single-chip microcomputer computing, exports to LCDs and shows, adopts linear hall sensor SS495A1 chip detection field signal, with Chip Microcomputer A ue845 is the control core, finish the program control amplification of field signal, analog to digital conversion, digital filtering, precision reaches 0.1mT after testing, Hall element adopts SS495A1, by Hall element, and amplifier, sheet resistance residual voltage corrective network three parts are formed, and sensor will be sensed magnetic field and be transformed into voltage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105727796A CN102033211A (en) | 2010-12-04 | 2010-12-04 | Magnetic field measuring instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105727796A CN102033211A (en) | 2010-12-04 | 2010-12-04 | Magnetic field measuring instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102033211A true CN102033211A (en) | 2011-04-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010105727796A Pending CN102033211A (en) | 2010-12-04 | 2010-12-04 | Magnetic field measuring instrument |
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| CN (1) | CN102033211A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102495380A (en) * | 2011-12-13 | 2012-06-13 | 华北电力大学 | Digital signal locking type spatial magnetic field detecting system |
| CN103543119A (en) * | 2012-07-12 | 2014-01-29 | 成都科盛石油科技有限公司 | Petroleum logging carbon dioxide detector capable of performing real-time communication |
| CN103558567A (en) * | 2013-10-23 | 2014-02-05 | 国家电网公司 | Method and device for detecting intensity of magnetic field |
| CN106990370A (en) * | 2017-04-01 | 2017-07-28 | 张子仪 | A kind of isolated superconducting magnetic energy storage system quenches detection device |
| CN107831456A (en) * | 2017-11-29 | 2018-03-23 | 武汉智能装备工业技术研究院有限公司 | A kind of wireless three-axle magnetic field measurement instrument based on Hall sensor |
| CN108872885A (en) * | 2018-05-29 | 2018-11-23 | 西安电子科技大学 | Alternative current field measurement experiment instrument |
| CN114446130A (en) * | 2021-12-29 | 2022-05-06 | 中国地质大学（北京） | Induced magnetic field exploration experimental device and method based on Maxwell theory |
| CN107831456B (en) * | 2017-11-29 | 2024-05-03 | 武汉智能装备工业技术研究院有限公司 | Wireless triaxial magnetic field measuring instrument based on Hall sensor |
-
2010
- 2010-12-04 CN CN2010105727796A patent/CN102033211A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102495380A (en) * | 2011-12-13 | 2012-06-13 | 华北电力大学 | Digital signal locking type spatial magnetic field detecting system |
| CN103543119A (en) * | 2012-07-12 | 2014-01-29 | 成都科盛石油科技有限公司 | Petroleum logging carbon dioxide detector capable of performing real-time communication |
| CN103558567A (en) * | 2013-10-23 | 2014-02-05 | 国家电网公司 | Method and device for detecting intensity of magnetic field |
| CN106990370A (en) * | 2017-04-01 | 2017-07-28 | 张子仪 | A kind of isolated superconducting magnetic energy storage system quenches detection device |
| CN107831456A (en) * | 2017-11-29 | 2018-03-23 | 武汉智能装备工业技术研究院有限公司 | A kind of wireless three-axle magnetic field measurement instrument based on Hall sensor |
| CN107831456B (en) * | 2017-11-29 | 2024-05-03 | 武汉智能装备工业技术研究院有限公司 | Wireless triaxial magnetic field measuring instrument based on Hall sensor |
| CN108872885A (en) * | 2018-05-29 | 2018-11-23 | 西安电子科技大学 | Alternative current field measurement experiment instrument |
| CN114446130A (en) * | 2021-12-29 | 2022-05-06 | 中国地质大学（北京） | Induced magnetic field exploration experimental device and method based on Maxwell theory |
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20110427 |