CN106289331A - A kind of Low Drift Temperature absolute value magnetic code dish and its implementation - Google Patents
A kind of Low Drift Temperature absolute value magnetic code dish and its implementation Download PDFInfo
- Publication number
- CN106289331A CN106289331A CN201610725030.8A CN201610725030A CN106289331A CN 106289331 A CN106289331 A CN 106289331A CN 201610725030 A CN201610725030 A CN 201610725030A CN 106289331 A CN106289331 A CN 106289331A
- Authority
- CN
- China
- Prior art keywords
- absolute value
- low drift
- magnetic code
- main shaft
- circuit board
- 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
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
- G01D5/12—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Transmission And Conversion Of Sensor Element Output (AREA)
Abstract
The present invention provides a kind of Low Drift Temperature absolute value magnetic code dish, including platform, copper shell, copper cap and main shaft；Described main shaft is positioned at platform axis, can be around platform middle shaft rotation；Described copper shell and copper cap are connected by screw on platform；Described copper shell has steel loop away from axis side is cementing；Described copper shell has circuit board near axis side is cementing；Be welded on described circuit board microprocessor, connector and four hall devices, and described four hall devices are evenly spaced on circuit board annulus；Magnet ring it is bonded with, described magnet ring axial pre-magnetizing on described main shaft；Described copper cap is connected with copper body seal, and described copper shell is contactless with magnet ring.The Low Drift Temperature absolute value magnetic code dish signal processing that the present invention provides is simple, is both placed in inside metal-back, it is possible to save space, drastically changes ambient temperature simultaneously and non-uniform temperature distribution is insensitive.
Description
Technical field
The present invention relates to magnetoelectricity angle measuring sensor technical field, particularly to a kind of Low Drift Temperature absolute value magnetic code dish and
Its implementation
Background technology
Industry servo, military weapon product all may use than relatively rugged environment, and variation of ambient temperature is violent, temperature
Spatial distribution is uneven, in the case of especially having infrared source or sub-cooled source.In these cases, general shaft angle
Code-disc varies with temperature substantially due to magnetic field, electric field, causes angle output shift serious, it is therefore desirable to one can adapt to badly
The shaft angle code-disc of temperature environment.
Summary of the invention
In order to solve above-mentioned technical problem, the technical scheme is that a kind of Low Drift Temperature absolute value magnetic code dish, including putting down
Platform, copper shell, copper cap and main shaft；Described main shaft is positioned at platform axis, can be around platform middle shaft rotation；Described copper shell and copper
Cap is connected by screw on platform；Described copper shell has steel loop away from axis side is cementing, and described copper shell is near axis side
Cementing have circuit board；Be welded on described circuit board microprocessor, connector and four hall devices, described four hall devices
It is evenly spaced on circuit board annulus；Magnet ring it is bonded with, described magnet ring axial pre-magnetizing on described main shaft；Described copper cap
Being connected with copper body seal, described copper shell is contactless with magnet ring.
Another technical scheme of the present invention provides the implementation method of a kind of Low Drift Temperature absolute value magnetic code dish, including following step
Rapid:
S1, magnet ring rotate with main shaft, and the sinusoidal rule producing phase contrast 90 ° on 4 hall devices be installed on circuit board becomes
Magnetizing field, hall device sensitivity magnetic field, export analog voltage；
On S2, circuit board, analog voltage and ambient temperature are done analog digital conversion by microprocessor, produce digital signal, according to temperature value
Hall voltage value is carried out temperature-compensating, then relative hall device voltage digital value is subtracted each other, obtain 2 phase contrasts 90 °
Voltage digital value；
On S3, circuit board, the voltage digital amount of 2 phase contrasts 90 ° is divided by by microprocessor, and carries out arctangent computation, at the beginning of obtaining
Step angle, and carry out angle modification according to angular error table, obtain final angle output.
The Low Drift Temperature absolute value magnetic code dish that the present invention provides compared with prior art, its advantage and providing the benefit that:
1) signal processing is simple, is both placed in inside metal-back, it is possible to save space；
2) ambient temperature is drastically changed and non-uniform temperature distribution is insensitive.
Accompanying drawing explanation
Below in conjunction with the accompanying drawings invention is described further:
The structural representation of the Low Drift Temperature absolute value magnetic code dish that Fig. 1 provides for the embodiment of the present invention；
The Section A-A schematic diagram of the Low Drift Temperature absolute value magnetic code dish that Fig. 2 provides for the embodiment of the present invention；
The signal processing flow schematic diagram of the Low Drift Temperature absolute value magnetic code dish that Fig. 3 provides for the embodiment of the present invention；
The hall device of the Low Drift Temperature absolute value magnetic code dish that Fig. 4 provides for the embodiment of the present invention arranges schematic diagram with magnet ring.
Detailed description of the invention
The Low Drift Temperature absolute value magnetic code dish proposed the present invention below in conjunction with the drawings and specific embodiments is made the most in detail
Explanation.It should be noted that, accompanying drawing all uses the form simplified very much and all uses non-ratio accurately, only in order to convenient, distinct
Ground aids in illustrating the purpose of the embodiment of the present invention.
As it is shown in figure 1, a kind of Low Drift Temperature absolute value magnetic code dish, platform 1 being installed copper shell 2, steel loop 7 is cemented in copper shell
2 circuit boards 3 are cemented in copper shell 2, and circuit board 3 has been welded microprocessor 3-1, connector 3-2, hall device 3-3, and screw 4 will
Copper cap 6 and copper shell 2 are anchored on platform 1, and magnet ring 8 is adhered to main shaft 5, and main shaft 5 drives magnet ring 8 to rotate；Copper cap 6 is by outside copper
Shell 2 seals, the sealing of leak space, copper shell 2 with magnet ring 8 without directly contacting, magnet ring axial pre-magnetizing.
The present invention also provides for a kind of Low Drift Temperature absolute value magnetic code dish signal processing flow, including:
The first step, magnet ring rotates with main shaft, produces the sine gauge of phase contrast 90 ° on 4 hall devices be installed on circuit board
Rule variation magnetic field, hall device sensitivity magnetic field, export analog voltage；
Second step, on circuit board, analog voltage and ambient temperature are done analog digital conversion by microprocessor, produce digital signal, according to temperature
Hall voltage value is carried out temperature-compensating by angle value, then relative hall device voltage digital value is subtracted each other, obtains 2 phase contrasts
The voltage digital value of 90 °；
3rd step, on circuit board, the voltage digital amount of 2 phase contrasts 90 ° is divided by by microprocessor, and carries out arctangent computation,
To preliminary angle, and carry out angle modification according to angular error table, obtain final angle output.
Described Low Drift Temperature absolute value magnetic code dish Hall voltage value temperature compensation, including: Hall temperature drift is set to
Magnetosensitive coefficient and the temperature drift of zero-bit output, test full temperature magnetosensitive coefficient and zero-bit output variation with temperature rule, carried out
During Hall temperature-compensating, Hall voltage value is converted into the magnitude of voltage of 0 DEG C.
Described Low Drift Temperature absolute value magnetic code disc gage is calculated angle value and is carried out angle modification according to angular error table, including: by code
Dish main shaft is connected (such as photoelectric code disk) with another high accuracy angle transducer, measures code-disc output and high accuracy angle transducer output
Difference, difference is recorded, when carrying out angle modification, this error is added.
Described Low Drift Temperature absolute value magnetic code dish is insensitive to variation of ambient temperature: Hall has carried out temperature adjustmemt；The most suddenly
Your voltage subtracts each other and has deducted zero-bit output, and the when of carrying out division arithmetic, magnetosensitive coefficient is also removed, and temperature is the most theoretical
Upper inoperative；Code-disc circuit board is all surrounded by metal shell, has reasonable sealing, internal slow with external environment condition conduction of heat
Slowly, and utilize the excellent heat-conductive characteristic of metal-back so that internal temperature is uniformly distributed.
In the present embodiment, rotating shaft is the steel axle of Ф 8mm；Magnet ring internal diameter Ф 8mm, external diameter Ф 12mm, axial charging remanent magnetism
1.2T；Magnet ring and copper shell spacing 0.5mm, with hall device surface spacing 2mm；Code-disc external diameter Ф 23mm, code-disc flange outer diameter
Ф26mm；Microprocessor uses the MSP430F5508 of TI company, and it is 1 DEG C of temperature sensor that inside carries precision, and hall device is adopted
A1392 with Allegro company.After tested, after temperature-compensating, output error correction ,-40 DEG C ~ 85 DEG C ambient temperatures
In excursion, code-disc output accuracy is higher than 0.2 °.
Obviously, those skilled in the art can carry out various change and the deformation essence without deviating from the present invention to the present invention
God and scope.So, if these amendments of the present invention and modification belong to the scope of the claims in the present invention and equivalent technologies thereof
Within, then the present invention is also intended to comprise these change and modification.
Claims (9)
1. a Low Drift Temperature absolute value magnetic code dish, it is characterised in that include platform, copper shell, copper cap and main shaft；Described main shaft
It is positioned at platform axis, can be around platform middle shaft rotation；Described copper shell and copper cap are connected by screw on platform；Described copper
Shell has steel loop away from axis side is cementing, and described copper shell has circuit board near axis side is cementing；
Be welded on described circuit board microprocessor, connector and four hall devices, and described four hall devices are uniformly arranged
On circuit board annulus；
Magnet ring it is bonded with, described magnet ring axial pre-magnetizing on described main shaft；
Described copper cap is connected with copper body seal, and described copper shell is contactless with magnet ring.
Low Drift Temperature absolute value magnetic code dish the most according to claim 1, it is characterised in that be bearing between described main shaft and platform
Connect or frictional connection.
Low Drift Temperature absolute value magnetic code dish the most according to claim 1, it is characterised in that between described copper cap and copper shell
The sealing of leak space.
Low Drift Temperature absolute value magnetic code dish the most according to claim 1, it is characterised in that described main shaft is the steel axle of Ф 8mm.
Low Drift Temperature absolute value magnetic code dish the most according to claim 4, it is characterised in that described magnet ring internal diameter Ф 8mm, external diameter
Ф 12mm, axial pre-magnetizing remanent magnetism 1.2T.
Low Drift Temperature absolute value magnetic code dish the most according to claim 5, it is characterised in that described magnet ring with copper shell spacing is
0.5mm, is 2mm with hall device surface spacing.
7. the implementation method of a Low Drift Temperature absolute value magnetic code dish as claimed in claim 1, it is characterised in that include following step
Rapid:
S1, magnet ring rotate with main shaft, and the sinusoidal rule producing phase contrast 90 ° on 4 hall devices be installed on circuit board becomes
Magnetizing field, hall device sensitivity magnetic field, export analog voltage；
On S2, circuit board, analog voltage and ambient temperature are done analog digital conversion by microprocessor, produce digital signal, according to temperature value
Hall voltage value is carried out temperature-compensating, then relative hall device voltage digital value is subtracted each other, obtain 2 phase contrasts 90 °
Voltage digital value；
On S3, circuit board, the voltage digital amount of 2 phase contrasts 90 ° is divided by by microprocessor, and carries out arctangent computation, at the beginning of obtaining
Step angle, and carry out angle modification according to angular error table, obtain final angle output.
The implementation method of Low Drift Temperature absolute value magnetic code dish the most according to claim 7, it is characterised in that in described step S3
In, the method for angle modification is:
Code-disc main shaft is connected with another high accuracy angle transducer, measures code-disc output and the difference of high accuracy angle transducer output
Value, records difference, carries out adding this error during angle modification.
The implementation method of Low Drift Temperature absolute value magnetic code dish the most according to claim 8, it is characterised in that described high accuracy angle
Sensor is photoelectric code disk.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610725030.8A CN106289331A (en) | 2016-08-25 | 2016-08-25 | A kind of Low Drift Temperature absolute value magnetic code dish and its implementation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610725030.8A CN106289331A (en) | 2016-08-25 | 2016-08-25 | A kind of Low Drift Temperature absolute value magnetic code dish and its implementation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106289331A true CN106289331A (en) | 2017-01-04 |
Family
ID=57616324
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610725030.8A Pending CN106289331A (en) | 2016-08-25 | 2016-08-25 | A kind of Low Drift Temperature absolute value magnetic code dish and its implementation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106289331A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106959603A (en) * | 2017-04-20 | 2017-07-18 | 中国电子科技集团公司第四十三研究所 | A kind of wide temperature range Low Drift Temperature timing system and its timing method |
| CN109655650A (en) * | 2017-10-12 | 2019-04-19 | 爱题埃克斯M2M株式会社 | Hall sensor device and current sensor apparatus with the same function with temperature measurement function |
| CN110567363A (en) * | 2019-10-17 | 2019-12-13 | 厦门市计量检定测试院 | angle detection device and detection method thereof |
| CN111006696A (en) * | 2019-12-16 | 2020-04-14 | 横店集团英洛华电气有限公司 | Magnetic encoder and angle calculation method thereof |
| CN115096175A (en) * | 2022-06-21 | 2022-09-23 | 河北航天晟达精密机械有限公司 | Integrated Hall angle measurement installation and adjustment system |
-
2016
- 2016-08-25 CN CN201610725030.8A patent/CN106289331A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106959603A (en) * | 2017-04-20 | 2017-07-18 | 中国电子科技集团公司第四十三研究所 | A kind of wide temperature range Low Drift Temperature timing system and its timing method |
| CN106959603B (en) * | 2017-04-20 | 2022-06-21 | 中国电子科技集团公司第四十三研究所 | Wide-temperature-range low-temperature drift timing system and timing method thereof |
| CN109655650A (en) * | 2017-10-12 | 2019-04-19 | 爱题埃克斯M2M株式会社 | Hall sensor device and current sensor apparatus with the same function with temperature measurement function |
| CN109655650B (en) * | 2017-10-12 | 2021-04-20 | 爱题埃克斯M2M株式会社 | Hall sensor device with temperature measuring function and current sensor device |
| CN110567363A (en) * | 2019-10-17 | 2019-12-13 | 厦门市计量检定测试院 | angle detection device and detection method thereof |
| CN111006696A (en) * | 2019-12-16 | 2020-04-14 | 横店集团英洛华电气有限公司 | Magnetic encoder and angle calculation method thereof |
| CN115096175A (en) * | 2022-06-21 | 2022-09-23 | 河北航天晟达精密机械有限公司 | Integrated Hall angle measurement installation and adjustment system |
| CN115096175B (en) * | 2022-06-21 | 2023-05-16 | 河北航天晟达精密机械有限公司 | Integrated Hall angle measurement adjustment system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106289331A (en) | A kind of Low Drift Temperature absolute value magnetic code dish and its implementation | |
| KR101331182B1 (en) | Magnetic Angular Position Sensor for a Course up to 360° | |
| CN102539835B (en) | Control method for installation error angle of quartz flexible accelerometer | |
| JP6236452B2 (en) | Apparatus, method, and sensor for measuring absolute angular position using multipolar magnet | |
| US10041780B2 (en) | Position sensor | |
| CN105452815B (en) | For the position sensor arrangement for the position for determining mobile device | |
| CN105229424B (en) | Method for self-calibrating a rotary encoder | |
| JP2016503174A (en) | Multi-turn absolute magnetic encoder | |
| CN102141371A (en) | Angle encoder and method for determining an angle between a sensor assembly and a magnetic field | |
| CN201311272Y (en) | Non-contact high-precision angle sensor | |
| Padmanabhan | Industrial instrumentation: principles and design | |
| EP3617657B1 (en) | Magnetic position sensor system and method | |
| CN106767956A (en) | High speed and super precision machine tool chief axis magnetic induction absolute value encoder and its measurement gear | |
| CN113358008B (en) | Button system and method for determining the position of a magnet of a button system | |
| CN103217139A (en) | Dual probe-based angular displacement transducer on-line self-calibration method | |
| CN203203607U (en) | Multi-loop absolute magnetic encoder | |
| CN102506698A (en) | Contactless corner-torque sensor | |
| CN106802398A (en) | A kind of detecting apparatus for rotor position based on fiber grating | |
| CN115494435A (en) | Apparatus and method for determining orientation of magnet and joystick | |
| CN104570142B (en) | Demodulation method of gravity gradient measuring signals of gravity gradiometer | |
| CN103148987A (en) | Device and method for measuring sealing state of bearing | |
| CN105738644A (en) | Rotation speed measurement device | |
| CN109313092A (en) | Torque master | |
| CN104075733A (en) | Double-channel sine and cosine angle sensor error compensation system and method | |
| CN202885841U (en) | Absolute value magneto-electric encoder |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into 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: 20170104 |