CN200986484Y - Magnetic field sensor - Google Patents
Magnetic field sensor Download PDFInfo
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- CN200986484Y CN200986484Y CN 200620048227 CN200620048227U CN200986484Y CN 200986484 Y CN200986484 Y CN 200986484Y CN 200620048227 CN200620048227 CN 200620048227 CN 200620048227 U CN200620048227 U CN 200620048227U CN 200986484 Y CN200986484 Y CN 200986484Y
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Abstract
The utility model discloses a magnetic field sensor, which includes a signal input and detection unit, a display and a data processing unit separately connected with the signal input and detection unit and the display. The signal input and detection unit includes a detection controller with a multi-pin port, a magnetic field converter, a signal conditioning circuit and a multi-core terminal. The data processing unit includes a data processing controller, an analogue photocoupler, a memory, an I[2]C bus and a USB port separately connected with the data processing controller and two power supply modules for the sensor. The detection controller is used to carry out detection of hot swap of the sensor, identification of the sensor, self-test of the sensor and data communication and command interchange with the data processing controller. The detection controller is also used to control online detection and online debugging of the sensor.
Description
Technical field
The utility model relates to a kind of magnetic field sensor of measuring air pressure.
Background technology
Sensor is the feeler that the mankind find out nature information, and the various non electrical quantity information that it can need be found out people change into the information about power that can survey, is the first road threshold of infosystem, provides condition and foundation for people are familiar with and control corresponding object.Sensor technology has more and more important effect in modern society, has developed into one of modern information technologies three big core technologies now.
Traditional sensor (or claiming common sensor) is analog meter instrument or analog computer product of the time.Its design phiolosophy is that external information is transformed into aanalogvoltage or current signal.The problem that it exists is that output amplitude is less, and sensitivity is lower, and function singleness, thereby is called " deaf and dumb sensor " by people.
It is of a great variety that configuration information obtains the sensor (common sensor) in source, specifically comprise photosensitive, temperature-sensitive, power is quick, voltage is quick, magnetosensitive, air-sensitive, wet quick, sound is quick, ray is quick, ion is quick, biology is quick etc., its principle has nothing in common with each other, but no matter be the sensor that adopts which kind of principle, all need measured signal is converted to electric quantity signals such as resistance, inductance, electric capacity at last, because the variation of R, L, C, caused the variation that detects electric current or detect voltage, these analog electrical signals have become the receptible digital signal of computing machine after sampling and A/D conversion.
Along with the progress in epoch, traditional sensor can not satisfy the demand of modern industrial and agricultural production even war.Need to improve its measuring accuracy.
Summary of the invention
The purpose of this utility model provides a kind of intelligent magnetic field sensor that can improve measuring accuracy that possesses data processing, self check, self-correcting, self compensation ability.
The technical measures that the utility model is taked are: provide a kind of intelligent magnetic field sensor to comprise: signal input detection unit, display screen, the data processing unit that is connected with display screen with the signal input detection unit respectively;
Comprise in the described signal input detection unit: have the detection controller of multiway interface, magnetic field transducer, the signal conditioning circuit that is connected with the magnetic field transducer output terminal, respectively with signal conditioning circuit with detect the multicore terminal that controller is connected;
Comprise in the described data processing unit: data processing controller, the analog photoelectricity coupling mechanism, storer, the I that are connected with data processing controller respectively
2C bus and USB interface place the power module of supplying probe power on the data processing unit.
Described magnetic field transducer is the magnetic field sensor that field signal is converted to voltage signal.
As above-mentioned structure of the present utility model, after the sensor starting, magnetic field transducer is converted to voltage signal with tested field signal and is input in the signal conditioning circuit; Signal conditioning circuit with its magnitude of voltage be converted to treatable magnitude of voltage and be converted to unified voltage signal according to the standard value of defined, i.e. normalization, general-25V～25V is normalized to 0～5V usually; Pass through multicore terminal and the I on data processing unit through the voltage signal after the normalization
2The C bus enters in the data processing controller; Data processing controller at first converts the voltage analog signal that receives to digital signal, compares then and calculates pairing measured value, and again that it is corresponding measured value is presented on the display screen, and deposits in the storer and by USB interface and export.Place the detection controller in the signal input detection unit to have multiway interface (as jtag interface), storage inside has the various information of sensor, as the identify label of sensor, standard signal value, identification code etc., after the sensor starting, it can online detection and on-line debugging by the multiway interface, and its is responsible for carrying out with the data processing controller in data processing unit the exchange of data communication and instruction; It finishes the detection of sensor hot plug, finishes the identification and the self-checking function of sensor identity, and the operation conditions of detecting sensor and adjustment sensor are at optimal operational condition.It is equivalent to the control center of integral sensors, and can liken is that one " brain " has been installed on the magnetic field sensor of a tradition (common).Be connected in analog photoelectricity coupling mechanism on the data processing controller and can isolate out interference from the simulating signal on the power module.
Measuring accuracy as the utility model magnetic field sensor of above-mentioned structure can improve at least 10% (generally being more than 10%) than the measuring accuracy of above-mentioned conventional magnetic field sensors.
Description of drawings
Fig. 1 is the structural representation of the utility model magnetic field sensor.
Embodiment
Further specify architectural feature of the present utility model below in conjunction with accompanying drawing.
As shown in Figure 1, the utility model magnetic field sensor comprises: signal input detection unit 1, display screen 3, the data processing unit 2 that is connected with display screen 3 with signal input detection unit 1 respectively;
Comprise in the described signal input detection unit 1: the detection controller 101 that has multiway interface 102, magnetic field transducer 105, the signal conditioning circuit 104 that is connected with magnetic field transducer 105 output terminals, respectively with signal conditioning circuit 104 with detect the multicore terminal 103 that controller 101 is connected;
Comprise in the described data processing unit 2: data processing controller 201, the analog photoelectricity coupling mechanism 204 that is connected with data processing controller 201, storer 205, I respectively
2 C bus 206 and USB interface 207 place the power module 202,203 of supplying probe power on the data processing unit 2.
In the present embodiment, as shown in Figure 1, the power supply of supply sensor has two power modules 202,203.One of them power module 203 uses for specializing in data processing controller 201.
It is in the present embodiment, described that to place the detection controller 101 in the signal input detection unit 1 and place the data processing controllers 201 in the data processing unit 2 all be the singlechip chip that contains mixed signal that has the embedded A/D converter of various ports.All be to have various ports specifically, as port and JTAG multiway interfaces such as 12C, SPI, UART, PCA, embedded A/D converter (mould/number sensor) and D/A converter (D/A), contain mixed signal SOC, the C8051F Series chip chip of Silicon Laboratories.This chip power-consumption is smaller, by the jtag interface of multiway, makes sensor can realize online detection and on-line debugging; This chip contains high-frequency clock, can effectively improve the reaction velocity of system.Contain the identity information of sensor at this chip internal memory, self check information, and check code etc.
In the present embodiment, described multicore terminal 103 adopts 10 core S terminals.10 core S terminals are the attachment plug that connects signal input detection unit 1 and data processing unit 2, and what be connected with 10 core S terminals is 10 core shielded cables.
Described magnetic field transducer 105 is the magnetic field sensors that field signal are converted to voltage signal.In the present embodiment, magnetic field transducer 105 is 3503 model magnetic field sensors, and magnetic field sensor (3503 type) is that voltage signal is input in the signal conditioning circuit with the information translation in magnetic field.Signal conditioning circuit is unified voltage signal, i.e. normalized with this voltage signal according to desired standard handovers.For example, magnetic field sensor of the present utility model is to be OV output be converted to pairing magnitude of voltage at magnetic field-500Guess, is that to be converted to pairing magnitude of voltage be the output of 5V voltage to 500Guess with magnetic field.
Described analog photoelectricity coupling mechanism 204 adopts HCNR200 analog photoelectricity coupling mechanism, and the interference of isolation mode analog signal fully prevents the impact of the simulating signal of power module to controller.
Claims (5)
1. magnetic field sensor is characterized in that comprising: signal input detection unit, display screen, the data processing unit that is connected with display screen with the signal input detection unit respectively;
Comprise in the described signal input detection unit: have the detection controller of multiway interface, magnetic field transducer, the signal conditioning circuit that is connected with the magnetic field transducer output terminal, respectively with signal conditioning circuit with detect the multicore terminal that controller is connected;
Comprise in the described data processing unit: data processing controller, the analog photoelectricity coupling mechanism, storer, the I that are connected with data processing controller respectively
2C bus and USB interface place the power module of supplying probe power on the data processing unit.
2. magnetic field sensor according to claim 1 is characterized in that described magnetic field transducer is the magnetic field sensor that field signal is converted to voltage signal.
3. magnetic field sensor according to claim 1 is characterized in that placing the detection controller in the signal input detection unit is the singlechip chip that contains mixed signal that has the embedded A/D converter of various ports.
4. magnetic field sensor according to claim 1 is characterized in that placing the data processing controller in the data processing unit is the singlechip chip that contains mixed signal that has the embedded A/D converter of various ports.
5. magnetic field sensor according to claim 1 is characterized in that placing two power modules are arranged in the data processing unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620048227 CN200986484Y (en) | 2006-11-28 | 2006-11-28 | Magnetic field sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620048227 CN200986484Y (en) | 2006-11-28 | 2006-11-28 | Magnetic field sensor |
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| Publication Number | Publication Date |
|---|---|
| CN200986484Y true CN200986484Y (en) | 2007-12-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 200620048227 Expired - Fee Related CN200986484Y (en) | 2006-11-28 | 2006-11-28 | Magnetic field sensor |
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Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101960319A (en) * | 2008-02-26 | 2011-01-26 | 阿莱戈微系统公司 | Magnetic field sensor with automatic sensitivity adjustment |
| CN102364354A (en) * | 2010-06-16 | 2012-02-29 | 雅马哈株式会社 | Magnetic sensor device and electronic compass apparatus |
| US8680846B2 (en) | 2011-04-27 | 2014-03-25 | Allegro Microsystems, Llc | Circuits and methods for self-calibrating or self-testing a magnetic field sensor |
| US8692546B2 (en) | 2009-07-22 | 2014-04-08 | Allegro Microsystems, Llc | Circuits and methods for generating a diagnostic mode of operation in a magnetic field sensor |
| US8818749B2 (en) | 2009-02-17 | 2014-08-26 | Allegro Microsystems, Llc | Circuits and methods for generating a self-test of a magnetic field sensor |
| US9201122B2 (en) | 2012-02-16 | 2015-12-01 | Allegro Microsystems, Llc | Circuits and methods using adjustable feedback for self-calibrating or self-testing a magnetic field sensor with an adjustable time constant |
| US9638764B2 (en) | 2015-04-08 | 2017-05-02 | Allegro Microsystems, Llc | Electronic circuit for driving a hall effect element with a current compensated for substrate stress |
| US9645220B2 (en) | 2014-04-17 | 2017-05-09 | Allegro Microsystems, Llc | Circuits and methods for self-calibrating or self-testing a magnetic field sensor using phase discrimination |
| US9735773B2 (en) | 2014-04-29 | 2017-08-15 | Allegro Microsystems, Llc | Systems and methods for sensing current through a low-side field effect transistor |
| US9804249B2 (en) | 2014-11-14 | 2017-10-31 | Allegro Microsystems, Llc | Dual-path analog to digital converter |
| US9841485B2 (en) | 2014-11-14 | 2017-12-12 | Allegro Microsystems, Llc | Magnetic field sensor having calibration circuitry and techniques |
| US10107873B2 (en) | 2016-03-10 | 2018-10-23 | Allegro Microsystems, Llc | Electronic circuit for compensating a sensitivity drift of a hall effect element due to stress |
| US10162017B2 (en) | 2016-07-12 | 2018-12-25 | Allegro Microsystems, Llc | Systems and methods for reducing high order hall plate sensitivity temperature coefficients |
| US10466298B2 (en) | 2014-11-14 | 2019-11-05 | Allegro Microsystems, Llc | Magnetic field sensor with shared path amplifier and analog-to-digital-converter |
| US10520559B2 (en) | 2017-08-14 | 2019-12-31 | Allegro Microsystems, Llc | Arrangements for Hall effect elements and vertical epi resistors upon a substrate |
| US11169223B2 (en) | 2020-03-23 | 2021-11-09 | Allegro Microsystems, Llc | Hall element signal calibrating in angle sensor |
| US11630130B2 (en) | 2021-03-31 | 2023-04-18 | Allegro Microsystems, Llc | Channel sensitivity matching |
-
2006
- 2006-11-28 CN CN 200620048227 patent/CN200986484Y/en not_active Expired - Fee Related
Cited By (23)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101960319A (en) * | 2008-02-26 | 2011-01-26 | 阿莱戈微系统公司 | Magnetic field sensor with automatic sensitivity adjustment |
| CN101960319B (en) * | 2008-02-26 | 2014-06-04 | 阿莱戈微系统有限责任公司 | Magnetic field sensor with automatic sensitivity adjustment |
| US8818749B2 (en) | 2009-02-17 | 2014-08-26 | Allegro Microsystems, Llc | Circuits and methods for generating a self-test of a magnetic field sensor |
| US9151807B2 (en) | 2009-02-17 | 2015-10-06 | Allegro Microsystems, Llc | Circuits and methods for generating a self-test of a magnetic field sensor |
| US8692546B2 (en) | 2009-07-22 | 2014-04-08 | Allegro Microsystems, Llc | Circuits and methods for generating a diagnostic mode of operation in a magnetic field sensor |
| CN102364354B (en) * | 2010-06-16 | 2015-01-14 | 雅马哈株式会社 | Magnetic sensor device and electronic compass apparatus |
| US8949047B2 (en) | 2010-06-16 | 2015-02-03 | Yamaha Corporation | Magnetic sensor device and electronic compass apparatus |
| CN102364354A (en) * | 2010-06-16 | 2012-02-29 | 雅马哈株式会社 | Magnetic sensor device and electronic compass apparatus |
| US8680846B2 (en) | 2011-04-27 | 2014-03-25 | Allegro Microsystems, Llc | Circuits and methods for self-calibrating or self-testing a magnetic field sensor |
| US9201122B2 (en) | 2012-02-16 | 2015-12-01 | Allegro Microsystems, Llc | Circuits and methods using adjustable feedback for self-calibrating or self-testing a magnetic field sensor with an adjustable time constant |
| US9645220B2 (en) | 2014-04-17 | 2017-05-09 | Allegro Microsystems, Llc | Circuits and methods for self-calibrating or self-testing a magnetic field sensor using phase discrimination |
| US9735773B2 (en) | 2014-04-29 | 2017-08-15 | Allegro Microsystems, Llc | Systems and methods for sensing current through a low-side field effect transistor |
| US10466298B2 (en) | 2014-11-14 | 2019-11-05 | Allegro Microsystems, Llc | Magnetic field sensor with shared path amplifier and analog-to-digital-converter |
| US9804249B2 (en) | 2014-11-14 | 2017-10-31 | Allegro Microsystems, Llc | Dual-path analog to digital converter |
| US9841485B2 (en) | 2014-11-14 | 2017-12-12 | Allegro Microsystems, Llc | Magnetic field sensor having calibration circuitry and techniques |
| US9638764B2 (en) | 2015-04-08 | 2017-05-02 | Allegro Microsystems, Llc | Electronic circuit for driving a hall effect element with a current compensated for substrate stress |
| US10254354B2 (en) | 2016-03-10 | 2019-04-09 | Allegro Microsystems, Llc | Electronic circuit for compensating a sensitivity drift of a hall effect element due to stress |
| US10107873B2 (en) | 2016-03-10 | 2018-10-23 | Allegro Microsystems, Llc | Electronic circuit for compensating a sensitivity drift of a hall effect element due to stress |
| US10162017B2 (en) | 2016-07-12 | 2018-12-25 | Allegro Microsystems, Llc | Systems and methods for reducing high order hall plate sensitivity temperature coefficients |
| US10746818B2 (en) | 2016-07-12 | 2020-08-18 | Allegro Microsystems, Llc | Systems and methods for reducing high order hall plate sensitivity temperature coefficients |
| US10520559B2 (en) | 2017-08-14 | 2019-12-31 | Allegro Microsystems, Llc | Arrangements for Hall effect elements and vertical epi resistors upon a substrate |
| US11169223B2 (en) | 2020-03-23 | 2021-11-09 | Allegro Microsystems, Llc | Hall element signal calibrating in angle sensor |
| US11630130B2 (en) | 2021-03-31 | 2023-04-18 | Allegro Microsystems, Llc | Channel sensitivity matching |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20071205 Termination date: 20091228 |