CN107884726A - A kind of magnetic switch circuit for being used to export magnetic vector length - Google Patents
A kind of magnetic switch circuit for being used to export magnetic vector length Download PDFInfo
- Publication number
- CN107884726A CN107884726A CN201711077906.3A CN201711077906A CN107884726A CN 107884726 A CN107884726 A CN 107884726A CN 201711077906 A CN201711077906 A CN 201711077906A CN 107884726 A CN107884726 A CN 107884726A
- Authority
- CN
- China
- Prior art keywords
- magnetic
- signal
- vector
- quantity sensor
- uniaxial
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000013598 vector Substances 0.000 title claims abstract description 106
- 238000012545 processing Methods 0.000 claims abstract description 45
- 238000000034 method Methods 0.000 abstract description 6
- 238000013461 design Methods 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000005259 measurement Methods 0.000 abstract description 2
- 238000001514 detection method Methods 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R33/00—Arrangements or instruments for measuring magnetic variables
- G01R33/02—Measuring direction or magnitude of magnetic fields or magnetic flux
Landscapes
- Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Measuring Magnetic Variables (AREA)
Abstract
The present invention provides a kind of magnetic switch circuit for being used to export magnetic vector length, is related to magnetic field intensity detection circuit field, including：Uniaxial magnetic quantity sensor module, uniaxial magnetic quantity sensor module include multiple uniaxial magnetic quantity sensors, and each uniaxial magnetic quantity sensor is respectively used to the first preprocessed signal of the corresponding preset direction of output one；Application specific integrated circuit module, application specific integrated circuit module connection uniaxial magnetic quantity sensor module, for receiving each first preprocessed signal and carrying out the processing of vector modulus and vector modulus and processing, to obtain magnetic vector signal and corresponding magnetic vector length and export.Beneficial effects of the present invention：Magnetic field intensity of this invention in application specific integrated circuit module measurement all directions, the processing of vector modulus and vector modulus and processing are realized in application specific integrated circuit module, so as to obtain accurate magnetic vector length, reduce the design difficulty of Magnetic Sensor in conventional art, the process complexity of Magnetic Sensor is simplified, effectively improves finished product yield.
Description
Technical field
The present invention relates to magnetic field intensity to detect field of circuit technology, more particularly to a kind of for exporting magnetic vector length
Magnetic switch circuit.
Background technology
2D/3D magnetic switches realize that magnetic vector exports using single magnetic head more, but easily by Magnetic Sensor technique shadow
Ring.
For example, traditional 2D/3D magnetic switches carry out vector output using Magnetic Sensor, then using application specific integrated circuit
(Application Specific Integrated Circuit, ASIC) carries out scalar processing to magnetic vector length to obtain
Magnetic vector size (magnetic vector length) simultaneously exports.Wherein, exported between Magnetic Sensor part and ASIC portion using single channel
Pattern.Such a 2D/3D magnetic switches are easily by Magnetic Sensor technogenic influence.Cause output accuracy insufficient, temperature drift is excessive etc. asks
Topic.
The content of the invention
For problems of the prior art, the invention provides a kind of magnetic switch for being used to export magnetic vector length
Circuit.The present invention adopts the following technical scheme that：
A kind of magnetic switch circuit for being used to export magnetic vector length, the magnetic switch circuit include：
Uniaxial magnetic quantity sensor module, the uniaxial magnetic quantity sensor module include at least one uniaxial magnetic quantity sensor, Mei Gesuo
State the first preprocessed signal that uniaxial magnetic quantity sensor is respectively used to the corresponding preset direction of output one；
Application specific integrated circuit module, the application specific integrated circuit module connects the uniaxial magnetic quantity sensor module, for connecing
Receive each first preprocessed signal and carry out the processing of vector modulus and vector modulus and processing, to obtain magnetic vector signal and phase
The magnetic vector length answered simultaneously exports.
Preferably, the application specific integrated circuit module includes：
Passage switch unit, each uniaxial magnetic quantity sensor of passage switch unit connection, for according to default rule
Then switching signal handles link between at least one uniaxial magnetic quantity sensor, is sensed with receiving each uniaxial magnetic respectively
First preprocessed signal of device output simultaneously exports；
First low-noise amplifier unit, the first low-noise amplifier unit connect the passage switch unit, use
In receiving each first preprocessed signal and carrying out signal enhanced processing respectively, to obtain corresponding second preprocessed signal
And export；
First squarer element, first squarer element connects the first low-noise amplifier unit, for connecing
Receive each second preprocessed signal and carry out the vector modulus processing respectively to each second preprocessed signal, with
Obtain corresponding 3rd preprocessed signal and export；
First integrator unit, the first integrator unit connects first squarer element, each for receiving
Second preprocessed signal simultaneously carries out the vector modulus and processing to each second preprocessed signal respectively, to obtain
Magnetic vector signal and corresponding magnetic vector length simultaneously export.
Preferably, the signal transacting link between the uniaxial magnetic quantity sensor module and the application specific integrated circuit module is adopted
With single, the magnetic vector signal of the magnetic switch circuit output is single shaft magnetic vector.
Preferably, the application specific integrated circuit module includes：
Second low-noise amplifier unit, the second low-noise amplifier unit connect each uniaxial magnetic and passed respectively
Sensor, it is pre- to obtain the corresponding 4th for receiving each first preprocessed signal and carrying out signal enhanced processing respectively
Process signal simultaneously exports；
Second squarer element, second squarer element connects the second low-noise amplifier unit, for connecing
Receive the 4th preprocessed signal described in unit and carry out the vector modulus processing respectively to each 4th preprocessed signal, with
Obtain corresponding 5th preprocessed signal and export；
Second integral device unit, the second integral device unit connects second squarer element, each for receiving
5th preprocessed signal simultaneously carries out the vector modulus and processing to all 5th preprocessed signals, described to obtain
Magnetic vector signal and corresponding magnetic vector length simultaneously export.
Preferably, the signal transacting link between the uniaxial magnetic quantity sensor module and the application specific integrated circuit module is adopted
With multi-channel mode, the quantity of the uniaxial magnetic quantity sensor is two, the magnetic vector signal of the magnetic switch circuit output
For two axle magnetic vectors.
Preferably, the signal transacting link between the uniaxial magnetic quantity sensor module and the application specific integrated circuit module is adopted
With multi-channel mode, the quantity of the uniaxial magnetic quantity sensor is three, the magnetic vector signal of the magnetic switch circuit output
For three axle magnetic vectors.
Preferably, the magnetic switch circuit also includes：
Comparator unit, the comparator unit connects the application specific integrated circuit module, for according to a predetermined threshold value
Processing is compared to the magnetic vector length, to judge whether the magnetic vector length exceedes threshold value.
Preferably, the magnetic switch circuit also includes：
Threshold value input block, the threshold value input block connects the application specific integrated circuit module, for being supplied to user
Input the predetermined threshold value.
Beneficial effects of the present invention：Magnetic field intensity of this invention in application specific integrated circuit module measurement all directions,
Application specific integrated circuit module realizes the processing of vector modulus and vector modulus and processing, so as to obtain accurate magnetic vector length,
Reduce the design difficulty of Magnetic Sensor in conventional art, simplify the process complexity of Magnetic Sensor, it is good to effectively improve finished product
Rate.
Brief description of the drawings
Fig. 1 is the structure of the magnetic switch circuit for exporting magnetic vector length in a kind of preferred embodiment of the present invention
One of schematic diagram；
Fig. 2 is the structure of the magnetic switch circuit for exporting magnetic vector length in a kind of preferred embodiment of the present invention
The two of schematic diagram；
Fig. 3 is the structure of the magnetic switch circuit for exporting magnetic vector length in a kind of preferred embodiment of the present invention
The three of schematic diagram.
Embodiment
It should be noted that in the case where not conflicting, following technical proposals, can be mutually combined between technical characteristic.
The embodiment of the present invention is further described below in conjunction with the accompanying drawings：
A kind of as shown in figure 1, magnetic switch circuit for being used to export magnetic vector length, it is characterised in that above-mentioned magnetic switch
Circuit includes：
Uniaxial magnetic quantity sensor module 1, above-mentioned uniaxial magnetic quantity sensor module 1 include at least one uniaxial magnetic quantity sensor 3, each
Above-mentioned uniaxial magnetic quantity sensor 3 is respectively used to the first preprocessed signal of the corresponding preset direction of output one；
Application specific integrated circuit module 2, above-mentioned application specific integrated circuit module 2 connect above-mentioned uniaxial magnetic quantity sensor module 1, are used for
Receive each above-mentioned first preprocessed signal and carry out the processing of vector modulus and vector modulus and processing, with obtain magnetic vector signal and
Corresponding magnetic vector length simultaneously exports.
In the present embodiment, in (the Application Specific Integrated of application specific integrated circuit module 2
Circuit, ASIC) magnetic vector length is solved instead of solving magnetic vector length in Magnetic Sensor part.
By measuring the magnetic field intensity in all directions in application specific integrated circuit part, and it is real in application specific integrated circuit part
The processing of vector modulus and vector modulus and processing are showed, so as to obtain accurate magnetic vector length.This implementation reduces
The design difficulty of Magnetic Sensor in conventional art, simplifies the process complexity of Magnetic Sensor, effectively improves finished product yield.
As shown in Fig. 2 in preferred embodiment, when using single, above-mentioned application specific integrated circuit module 2 is wrapped
Include：
Passage switch unit 4, above-mentioned passage switch unit 4 connect each above-mentioned uniaxial magnetic quantity sensor 3, for according to default
Rule switching signal between multiple above-mentioned uniaxial magnetic quantity sensors 3 handles link, is sensed with receiving each above-mentioned uniaxial magnetic respectively
Above-mentioned first preprocessed signal of the output of device 3 simultaneously exports；
First low-noise amplifier unit 5, above-mentioned first low-noise amplifier unit 5 connect above-mentioned passage switch unit 4,
For receiving each above-mentioned first preprocessed signal and carrying out signal enhanced processing respectively, believed with obtaining corresponding second pretreatment
Number and export；
First squarer element 6, above-mentioned first squarer element 6 connect above-mentioned first low-noise amplifier unit 5, are used for
Receive each above-mentioned second preprocessed signal and carry out above-mentioned vector modulus processing respectively to each above-mentioned second preprocessed signal,
To obtain corresponding 3rd preprocessed signal and export；
First integrator unit 7, above-mentioned first integrator unit 7 connect above-mentioned first squarer element 6, every for receiving
Individual above-mentioned second preprocessed signal simultaneously carries out above-mentioned vector modulus and processing to each above-mentioned second preprocessed signal respectively, with
To magnetic vector signal and corresponding magnetic vector length and export.
In preferred embodiment, the signal between above-mentioned uniaxial magnetic quantity sensor module 1 and above-mentioned application specific integrated circuit module 2
Processing link uses single, and the above-mentioned magnetic vector signal of above-mentioned magnetic switch circuit output is single shaft magnetic vector.
In the present embodiment, when signal transacting link is switched to any one uniaxial magnetic quantity sensor 3 by passage switch unit 4
When, the uniaxial magnetic quantity sensor 3 export the first preprocessed signal, the first low-noise amplifier unit 5 carry out signal enhanced processing with
Amplify the faint output signal of uniaxial magnetic quantity sensor 3 and obtain the second preprocessed signal, the first squarer element 6 pre-processes to second
Single vector corresponding to signal carries out vector modulus and handles to obtain the 3rd preprocessed signal, and first integrator unit 7 carries out vector
Modulus and processing obtain magnetic vector signal and corresponding magnetic vector length, first integrator unit 7 can to magnetic vector signal and
Corresponding magnetic vector length is stored and exported, and now, the processing for the single uniaxial magnetic quantity sensor 3 is completed, and passage is cut
Unit 4 is changed to be switched to next uniaxial magnetic quantity sensor 3 and repeat the above steps.Wherein, the first low-noise amplifier unit is passed through
5th, the first squarer element 6 can be such that the offset voltage of whole circuit and low-frequency noise is all effectively suppressed, and improve first
The linearity of squarer element 6.
As shown in figure 3, in preferred embodiment, when using multi-channel mode, above-mentioned application specific integrated circuit module 2 is wrapped
Include：
Second low-noise amplifier unit 8, above-mentioned second low-noise amplifier unit 8 connect each above-mentioned uniaxial magnetic respectively
Sensor 3, for receiving each above-mentioned first preprocessed signal and carrying out signal enhanced processing respectively, to obtain the corresponding 4th
Preprocessed signal simultaneously exports；
Second squarer element 9, above-mentioned second squarer element 9 connect above-mentioned second low-noise amplifier unit 8, are used for
Above-mentioned 4th preprocessed signal of receiving unit simultaneously carries out above-mentioned vector modulus processing to each above-mentioned 4th preprocessed signal respectively,
To obtain corresponding 5th preprocessed signal and export；
Second integral device unit 10, above-mentioned second integral device unit 10 connects above-mentioned second squarer element 9, for receiving
Each above-mentioned 5th preprocessed signal simultaneously carries out above-mentioned vector modulus and processing to all above-mentioned 5th preprocessed signals, to obtain
Above-mentioned magnetic vector signal and corresponding magnetic vector length simultaneously export.
In preferred embodiment, the signal between above-mentioned uniaxial magnetic quantity sensor module 1 and above-mentioned application specific integrated circuit module 2
Processing link use multi-channel mode, and the quantity of above-mentioned uniaxial magnetic quantity sensor 3 is two, above-mentioned magnetic switch circuit output it is above-mentioned
Magnetic vector signal is two axle magnetic vectors.
In preferred embodiment, the signal between above-mentioned uniaxial magnetic quantity sensor module 1 and above-mentioned application specific integrated circuit module 2
Processing link use multi-channel mode, and the quantity of above-mentioned uniaxial magnetic quantity sensor 3 is three, above-mentioned magnetic switch circuit output it is above-mentioned
Magnetic vector signal is three axle magnetic vectors.
In the present embodiment, each uniaxial magnetic quantity sensor 3 exports the first preprocessed signal, the first low-noise amplifier respectively
Unit 5 can carry out signal enhanced processing respectively (for example, when first to all first preprocessed signals successively according to preset order
Between section handle first the first preset signals transmitted, second time period handles second the first default letter transmitted
Number, by that analogy) to amplify the faint output signal of uniaxial magnetic quantity sensor 3 obtain the 4th preprocessed signal, the first squarer list
Member 6 can carry out vector modulus processing respectively to single vector corresponding to all 4th preprocessed signals successively according to preset order
(for example, first time period handles first the 4th preprocessed signal transmitted, second time period handles second and is transmitted across
The 4th preprocessed signal come, by that analogy) the 5th preprocessed signal is obtained, second integral device unit 10 is to all five pre- places
Reason signal carries out vector modulus simultaneously and processing obtains magnetic vector signal and corresponding magnetic vector length, i.e., is summed by multichannel
Obtain magnetic vector length.Under multi-channel mode, magnetic switch circuit is handled the output of multiple uniaxial magnetic quantity sensors 3 simultaneously
If a uniaxial magnetic quantity sensor 3 then exports uniaxial magnetic vector signal, if two uniaxial magnetic quantity sensors 3 then
Two axle magnetic vector signals are exported, if three uniaxial magnetic quantity sensors 3 then export three axle magnetic vector signals, therefore, magnetic switch electricity
Road belongs to universal circuit, can be used in handling one-dimensional, two dimension, the output signal of three-dimensional multiple uniaxial magnetic quantity sensors 3.In view of description
Physical space need to be only x-axis, y-axis and z-axis, therefore, it is generally the case that the quantity of uniaxial magnetic quantity sensor 3 at most uses three
It is individual, naturally it is also possible to be increased and decreased according to being actually needed.Wherein, the second low-noise amplifier unit 8, the second squarer list are passed through
Member 9 can be such that the offset voltage of whole circuit and low-frequency noise is all effectively suppressed, and improve the line of the first squarer element 6
Property degree.
In preferred embodiment, above-mentioned magnetic switch circuit also includes：
Comparator unit (not shown), above-mentioned comparator unit connects above-mentioned application specific integrated circuit module 2, for root
Processing is compared to above-mentioned magnetic vector length according to a predetermined threshold value, to judge whether above-mentioned magnetic vector length exceedes threshold value.
In the present embodiment, can be in first integrator list either using single or multi-channel mode
Member 7 and second integral device unit 10 add a comparator unit below, are sweared by introducing extra threshold value in magnetic switch circuit
Amount, realize the threshold decision of magnetic vector signal.
In preferred embodiment, the magnetic switch circuit also includes：
Threshold value input block (not shown), above-mentioned threshold value input block connect above-mentioned application specific integrated circuit module 2, use
The predetermined threshold value is inputted in being supplied to user.
In the present embodiment, threshold value input block can be added in the first low-noise amplifier as uniaxial magnetic quantity sensor 3
On the low-noise amplifier unit 8 of unit 5 or second, it can also be added on the first squarer element 6 or the first squarer element 9.
By explanation and accompanying drawing, the exemplary embodiments of the specific structure of embodiment are given, it is smart based on the present invention
God, it can also make other conversions.Although foregoing invention proposes existing preferred embodiment, however, these contents are not intended as
Limitation.
For a person skilled in the art, after reading described above, various changes and modifications undoubtedly will be evident.
Therefore, appended claims should regard whole variations and modifications of the true intention and scope that cover the present invention as.Weighing
Any and all scope and content of equal value, are all considered as still belonging to the intent and scope of the invention in the range of sharp claim.
Claims (8)
1. a kind of magnetic switch circuit for being used to export magnetic vector length, it is characterised in that the magnetic switch circuit includes：
Uniaxial magnetic quantity sensor module, the uniaxial magnetic quantity sensor module include at least one uniaxial magnetic quantity sensor, each list
Axial magnetic sensor is respectively used to the first preprocessed signal of the corresponding preset direction of output one；
Application specific integrated circuit module, the application specific integrated circuit module connect the uniaxial magnetic quantity sensor module, every for receiving
Individual first preprocessed signal carries out the processing of vector modulus and vector modulus and processing, to obtain magnetic vector signal and corresponding
Magnetic vector length simultaneously exports.
2. magnetic switch circuit according to claim 1, it is characterised in that the application specific integrated circuit module includes：
Passage switch unit, each uniaxial magnetic quantity sensor of passage switch unit connection, for being existed according to preset rules
Switching signal handles link between at least one uniaxial magnetic quantity sensor, defeated to receive each uniaxial magnetic quantity sensor respectively
First preprocessed signal that goes out simultaneously exports；
First low-noise amplifier unit, the first low-noise amplifier unit connects the passage switch unit, for connecing
Receive each first preprocessed signal and simultaneously carry out signal enhanced processing respectively, to obtain corresponding second preprocessed signal and defeated
Go out；
First squarer element, first squarer element connect the first low-noise amplifier unit, every for receiving
Individual second preprocessed signal simultaneously carries out the vector modulus processing to each second preprocessed signal respectively, to obtain
Corresponding 3rd preprocessed signal simultaneously exports；
First integrator unit, the first integrator unit connect first squarer element, each described for receiving
Second preprocessed signal simultaneously carries out the vector modulus and processing to each second preprocessed signal respectively, to obtain magnetic arrow
Amount signal and corresponding magnetic vector length simultaneously export.
3. magnetic switch circuit according to claim 2, it is characterised in that the uniaxial magnetic quantity sensor module and described special
Signal transacting link between integrated circuit modules uses single, the magnetic vector letter of the magnetic switch circuit output
Number it is single shaft magnetic vector.
4. magnetic switch circuit according to claim 1, it is characterised in that the application specific integrated circuit module includes：
Second low-noise amplifier unit, the second low-noise amplifier unit connect each uniaxial magnetic sensing respectively
Device, for receiving each first preprocessed signal and carrying out signal enhanced processing respectively, to obtain the corresponding 4th pre- place
Reason signal simultaneously exports；
Second squarer element, second squarer element connects the second low-noise amplifier unit, for receiving list
Member the 4th preprocessed signal simultaneously carries out the vector modulus processing to each 4th preprocessed signal respectively, to obtain
Corresponding 5th preprocessed signal simultaneously exports；
Second integral device unit, the second integral device unit connect second squarer element, each described for receiving
5th preprocessed signal simultaneously carries out the vector modulus and processing to all 5th preprocessed signals, is sweared with obtaining the magnetic
Amount signal and corresponding magnetic vector length simultaneously export.
5. magnetic switch circuit according to claim 4, it is characterised in that the uniaxial magnetic quantity sensor module and described special
Signal transacting link between integrated circuit modules uses multi-channel mode, and the quantity of the uniaxial magnetic quantity sensor is two, institute
The magnetic vector signal for stating magnetic switch circuit output is two axle magnetic vectors.
6. magnetic switch circuit according to claim 4, it is characterised in that the uniaxial magnetic quantity sensor module and described special
Signal transacting link between integrated circuit modules uses multi-channel mode, and the quantity of the uniaxial magnetic quantity sensor is three, institute
The magnetic vector signal for stating magnetic switch circuit output is three axle magnetic vectors.
7. magnetic switch circuit according to claim 1, it is characterised in that the magnetic switch circuit also includes：
Comparator unit, the comparator unit connect the application specific integrated circuit module, for according to a predetermined threshold value to institute
State magnetic vector length and be compared processing, to judge whether the magnetic vector length exceedes threshold value.
8. magnetic switch circuit according to claim 7, it is characterised in that the magnetic switch circuit also includes：
Threshold value input block, the threshold value input block connects the application specific integrated circuit module, for being supplied to user to input
The predetermined threshold value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711077906.3A CN107884726A (en) | 2017-11-06 | 2017-11-06 | A kind of magnetic switch circuit for being used to export magnetic vector length |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711077906.3A CN107884726A (en) | 2017-11-06 | 2017-11-06 | A kind of magnetic switch circuit for being used to export magnetic vector length |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107884726A true CN107884726A (en) | 2018-04-06 |
Family
ID=61778799
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711077906.3A Pending CN107884726A (en) | 2017-11-06 | 2017-11-06 | A kind of magnetic switch circuit for being used to export magnetic vector length |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107884726A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108776314A (en) * | 2018-04-18 | 2018-11-09 | 微传智能科技（常州）有限公司 | ASIC processing circuits, offset voltage and low-frequency noise removal circuit, threshold decision circuit |
| CN109283379A (en) * | 2018-09-28 | 2019-01-29 | 南方电网科学研究院有限责任公司 | Method, device and equipment for measuring current of lead and readable storage medium |
| CN109283380A (en) * | 2018-09-28 | 2019-01-29 | 南方电网科学研究院有限责任公司 | Method, device, equipment and storage medium for measuring line current in power system |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050156591A1 (en) * | 2002-11-14 | 2005-07-21 | Hong Wan | Magnetoresistive smart switch |
| CN101606037A (en) * | 2007-02-09 | 2009-12-16 | 旭化成微电子株式会社 | Spatial information detection system and detection method thereof and space information detecting apparatus |
| CN201503268U (en) * | 2009-08-11 | 2010-06-09 | 天津市泰华科技有限公司 | Continuous inclinometer measuring module |
| CN101813479A (en) * | 2010-04-01 | 2010-08-25 | 王建国 | TMR (Triple Modular Redundancy) electronic compass |
| CN105469137A (en) * | 2016-01-22 | 2016-04-06 | 美新半导体（无锡）有限公司 | Reciting-chanting auxiliary device and system thereof |
-
2017
- 2017-11-06 CN CN201711077906.3A patent/CN107884726A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050156591A1 (en) * | 2002-11-14 | 2005-07-21 | Hong Wan | Magnetoresistive smart switch |
| CN101606037A (en) * | 2007-02-09 | 2009-12-16 | 旭化成微电子株式会社 | Spatial information detection system and detection method thereof and space information detecting apparatus |
| CN201503268U (en) * | 2009-08-11 | 2010-06-09 | 天津市泰华科技有限公司 | Continuous inclinometer measuring module |
| CN101813479A (en) * | 2010-04-01 | 2010-08-25 | 王建国 | TMR (Triple Modular Redundancy) electronic compass |
| CN105469137A (en) * | 2016-01-22 | 2016-04-06 | 美新半导体（无锡）有限公司 | Reciting-chanting auxiliary device and system thereof |
Non-Patent Citations (2)
| Title |
|---|
| 刘晓为等: "《MEMS传感器接口ASIC集成技术》", 28 February 2013, 国防工业出版社 * |
| 周祥才等: "《检测技术及应用》", 28 February 2009, 中国计量出版社 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108776314A (en) * | 2018-04-18 | 2018-11-09 | 微传智能科技（常州）有限公司 | ASIC processing circuits, offset voltage and low-frequency noise removal circuit, threshold decision circuit |
| CN109283379A (en) * | 2018-09-28 | 2019-01-29 | 南方电网科学研究院有限责任公司 | Method, device and equipment for measuring current of lead and readable storage medium |
| CN109283380A (en) * | 2018-09-28 | 2019-01-29 | 南方电网科学研究院有限责任公司 | Method, device, equipment and storage medium for measuring line current in power system |
| CN109283380B (en) * | 2018-09-28 | 2020-06-05 | 南方电网科学研究院有限责任公司 | Method, device, equipment and storage medium for measuring line current in power system |
| CN109283379B (en) * | 2018-09-28 | 2020-07-03 | 南方电网科学研究院有限责任公司 | Method, device and equipment for measuring current of lead and readable storage medium |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103674075B (en) | Method for the inductive generation of an electrical measurement signal and associated sensor device | |
| CN106020559B (en) | Pressure sensitive detection device, electronic equipment and touch display screen | |
| CN107884726A (en) | A kind of magnetic switch circuit for being used to export magnetic vector length | |
| CN101517373B (en) | Physical quantity measuring apparatus and signal processing method thereof | |
| CN104991142B (en) | A kind of signal analyzer, device and processing method | |
| CN103513195B (en) | Hall sensor measurement system and temperature compensation | |
| CN106343974A (en) | Temperature drift compensation device and method for measuring micro signal | |
| CN103528625A (en) | Gear sensor | |
| CN103323643A (en) | Single-chip current sensor and manufacturing method thereof | |
| CN115077571A (en) | Motion data detection device and sensor circuit thereof | |
| CN103542962A (en) | Pressure testing device | |
| CN107218955A (en) | Field apparatus and detector | |
| CN106092358A (en) | A kind for the treatment of method and apparatus of resistance sensor signal | |
| CN100498234C (en) | Sensor signal processor | |
| CN104198962B (en) | Superconducting quantum interference device Magnetic Sensor and the recognition methods of operating point saltus step therein | |
| CN101563611A (en) | Magnetic sensor device with robust signal processing | |
| CN205375086U (en) | Multi -path temperature detection system | |
| CN203551059U (en) | Analog sensor with digital compensation function | |
| CN103235031B (en) | Five-point position three-dimensional magnetic field measurement method based on plate stretching pyromagetic effect | |
| CN206930411U (en) | A kind of valves leakage temperature-detecting device | |
| US9453891B2 (en) | Magnetic field detection device | |
| CN107966167A (en) | A kind of light signal receiving and optoelectronic detecting device | |
| CN110568268B (en) | Electric field intensity test system of electric and magnetic field set based on MEMS technology | |
| CN206095354U (en) | Absolute pressure liquid level changer | |
| CN103617669A (en) | Coin detecting device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180406 |