CN106546163A - The detection correction system of magneto resistive angular sensor - Google Patents
The detection correction system of magneto resistive angular sensor Download PDFInfo
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- CN106546163A CN106546163A CN201510609176.1A CN201510609176A CN106546163A CN 106546163 A CN106546163 A CN 106546163A CN 201510609176 A CN201510609176 A CN 201510609176A CN 106546163 A CN106546163 A CN 106546163A
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Abstract
The invention discloses a kind of detection correction system of magneto resistive angular sensor, detects that correction system includes PLC, motor, power transmission shaft, rotary magnet, magneto resistive angular sensor and MCU；PLC is used to arrange a set angle and control motor Magnet to be rotated from initial position rotation set angle；Magneto resistive angular sensor is used for the anglec of rotation for detecting rotary magnet, and MCU is used to gather the anglec of rotation, and the anglec of rotation is sent to PLC；Whether PLC is additionally operable to the difference for detecting set angle and the anglec of rotation beyond a set point, and if so, then the testing result of PLC is that magneto resistive angular sensor is unqualified；If it is not, then the testing result of PLC is that magneto resistive angular sensor is qualified.Present invention achieves the detection and correction of the automatization of magneto resistive angular sensor, improve detection efficiency and accuracy of detection, it is easy to operate.
Description
Technical field
The present invention relates to a kind of detection correction system of sensor, more particularly to a kind of magneto resistive angular sensing
The detection correction system of device.
Background technology
Magneto resistive angular sensor is a kind of common detecting element, is widely used in automobile, Aero-Space,
The each department of national economy such as mining machinery, automatization and field.As magneto resistive angular sensor is to magnetic field
Direction is very sensitive, can all cause very big data deviation, institute to any angular deviation and position deviation
To be difficult the accuracy of its data is accurately calculated by theory.
Traditional magneto resistive angular sensor detection method manually crank rotating excitation field, is then read out which
Measured value, then the accuracy of its measured value is analyzed, the mode of detection magneto resistive angular sensor, examines manually
Survey efficiency low, and be unable to batch detection.In addition, manually rotary magnetic field is unable to reach and is accurately positioned,
There are very big subjective factorss in the artificial data that read simultaneously.So magneto resistive angular sensing of the prior art
Device detecting system certainty of measurement is not high, operation inconvenience.
The content of the invention
The technical problem to be solved in the present invention is to overcome the magneto resistive angular sensor of prior art to lead to
Manual mode detection is crossed, causes certainty of measurement not high, unhandy defect, there is provided a kind of reluctance type is passed
The detection correction system of sensor.
The present invention is solving above-mentioned technical problem by following technical proposals：
A kind of detection correction system of magneto resistive angular sensor, its feature are that the detection correction is
System include PLC (Programmable Logic Controller programmable logic controller (PLC)s), motor,
Power transmission shaft, rotary magnet, magneto resistive angular sensor and MCU (Microcontroller Unit microcontrollers
Unit)；
The PLC is electrically connected with the motor and the MCU respectively, and the motor passes through
The power transmission shaft is connected with the rotary magnet, and the MCU is electrically connected with the magneto resistive angular sensor
Connect；
The PLC is used to arrange a set angle and control the motor to drive the rotary magnet
The set angle is rotated from an initial position；
The magneto resistive angular sensor is used for the anglec of rotation for detecting the rotary magnet, the MCU
For gathering the anglec of rotation, and the anglec of rotation is sent to the PLC；
The PLC is additionally operable to detect whether the set angle and the difference of the anglec of rotation exceed one
Set point, if so, then the testing result of the PLC is that the magneto resistive angular sensor is unqualified；
If it is not, then the testing result of the PLC is that the magneto resistive angular sensor is qualified.
In this programme, by MCU, PLC, motor, rotary magnet effective cooperation, realize
The Aulomatizeted Detect of magneto resistive angular sensor, has saved manpower, has improve detection efficiency.
It is preferred that when the testing result of the PLC is that the magneto resistive angular sensor is unqualified,
The PLC is additionally operable to control the motor and drives the rotary magnet to rotate back to the initial position；
And the PLC sends calibration command to the magneto resistive angular sensor, the magneto resistive angular
Sensor resets zero point according to the current angular side-play amount for detecting.
In this programme, PLC can be automatically obtained the correction of magneto resistive angular sensor according to testing result,
Without the need for manually participating in.
It is preferred that the detection correction system also includes absolute value encoder, the absolute value encoder with
The PLC is electrically connected, and the absolute value encoder is connected with the motor by shaft coupling；
The absolute value encoder is used for the present rotation angel degree that motor described in Real-time Collection is rotated, and
The present rotation angel degree is sent to the PLC, the PLC is additionally operable to currently rotate described in comparison
Angle is with the set angle and adjusts the motor rotation, until the present rotation angel degree and institute
State set angle identical.
Absolute value encoder and PLC form closed loop control, and absolute value encoder is by the current of motor
The anglec of rotation feeds back to PLC, and whether PLC is equal adjusting motor according to value of feedback and set angle
Rotate, until motor is accurately positioned.
It is preferred that the detection correction system also includes display screen, the display screen is used to show described
The testing result of PLC, the numerical value of the set angle, the numerical value of the anglec of rotation.
It is preferred that the display screen is touch screen.In this programme, detection correction system can include manual
Detection correction mode and automatic detection correction mode, it is possible to the pattern needed for voluntarily being selected by touch screen.
It is preferred that the detection correction system also includes memory module, the memory module is used to store institute
State the testing result of PLC, the numerical value of the set angle, the numerical value of the anglec of rotation.
It is preferred that the detection correction system also includes alarm module, the alarm module is for described
When the testing result of PLC is that the magneto resistive angular sensor is unqualified, warning message is pointed out.If current
Detection correction system is detection correction system manually, and operating personnel can be according to warning message, in touch screen
Upper operation, realizes the correction of magneto resistive angular sensor.
It is preferred that the rotary magnet is U-shaped rotary magnet.
It is preferred that the MCU passes through SPI (Serial Peripheral Interface Serial Peripheral Interface (SPI)s)
Bus is connected with the magneto resistive angular sensor, and the MCU passes through serial bus and the PLC
Connection.
It is preferred that the PLC by RS485 (serial communication interface) interface respectively with the touch
Screen and the absolute value encoder connect.
The present invention positive effect be：Present invention achieves the automatization of magneto resistive angular sensor
Detection and correction, without the need for manually participating in whole process, saved human cost.And avoid artificial
Detection correction, the Magnetic oriented caused because of its subjective factors and the deviation for reading data are participated in, inspection is improve
Efficiency and accuracy of detection are surveyed, it is easy to operate.
Description of the drawings
Detection correction system structure diagrams of the Fig. 1 for the magneto resistive angular sensor of the embodiment of the present invention 1；
Detection correction system structure diagrams of the Fig. 2 for the magneto resistive angular sensor of the embodiment of the present invention 2.
Specific embodiment
The present invention is further illustrated below by the mode of embodiment, but is not therefore limited the present invention to
Among described scope of embodiments.
Embodiment 1
Fig. 1 shows a kind of detection correction system of magneto resistive angular sensor, and which includes PLC1, step
Stepper motor 2, power transmission shaft 3, U-shaped rotary magnet 4, magneto resistive angular sensor 5 and MCU6；PLC1
Electrically connect with motor 2, and PLC1 is electrically connected with MCU6 by serial bus, motor 2
It is connected with rotary magnet 4 by power transmission shaft 3, MCU6 passes through spi bus and magneto resistive angular sensor
5 electrical connections.
In detection trimming process, the set angle of PLC1 is set first, the present embodiment is with set angle
As a example by 45 °.And there is provision of set point, the i.e. anglec of rotation of the detection of magneto resistive angular sensor 5
With the difference of set angle, generally 1.3 °.PLC1 control motors 2 are rotated 4 turns of Magnet
Dynamic 45 °, rotary magnet 4 forms the rotating excitation field of direction-changeable.The detection rotation of magneto resistive angular sensor 5
Turn the anglec of rotation of Magnet 4, the MCU6 collection anglecs of rotation, and the anglec of rotation is sent to PLC1；
Whether PLC1 detections set angle (being 45 ° here) exceeds set point with the difference of the anglec of rotation,
Namely 1.3 ° of tolerance.If difference is more than 1.3 °, the testing result of PLC1 is magneto resistive angular
Sensor 5 is unqualified；When the testing result of PLC1 is that magneto resistive angular sensor 5 is unqualified, PLC1
Control motor 2 is rotated Magnet 4 and rotates back to initial position；And PLC1 sends calibration command extremely
Magneto resistive angular sensor 5, magneto resistive angular sensor 5 is according to the current angular side-play amount weight for detecting
Zero setting point.
If difference is not above 1.3 °, the testing result of PLC1 is closed for magneto resistive angular sensor 5
Lattice.
In order to further improve the accuracy of detection of detection correction system, typically select in the range of 0 ° -180 °
Take multiple set angles, such as 0 °, 45 °, 90 °, 135 °, 180 °, but it is not limited to this 5
Angle, can be implemented as standard with those skilled in the art.PLC1 starts detection from 0 °, if 0 ° reaches
Require, i.e. the difference of 0 ° of the anglec of rotation and the set angle of the detection of magneto resistive angular sensor 5 is less than
1.3 °, then carry out the detection of 45° angle degree, the same 0 ° of angle of criterion, by that analogy, extremely to 5
Individual angle meets the requirements, then the testing result of PLC1 is that magneto resistive angular sensor 5 is qualified.If inspection
Measure an angle unqualified, magneto resistive angular sensor 5 is corrected, is continued after correction to the angle
Degree is detected, if still unqualified, the testing result of PLC1 be magneto resistive angular sensor 5 not
It is qualified.
Embodiment 2
Embodiment 2 is substantially the same manner as Example 1, as shown in Fig. 2 difference is, detection correction
System also includes absolute value encoder 7 and display screen 9.
Absolute value encoder 7 is electrically connected with PLC1 by RS485 interfaces, and absolute value encoder 7 is logical
Cross shaft coupling 8 to be connected with motor 2.In order to further improve the accuracy of detection of detection correction system,
It is first accurate to motor 2 fixed before magneto resistive angular sensor 5 detects the anglec of rotation of rotary magnet 4
Position, to realize that the precision of rotary magnet 4 is positioned.Absolute value encoder 7 forms closed loop control with PLC1,
The present rotation angel degree that 7 Real-time Collection motor of absolute value encoder 2 is rotated, and by present rotation angel
Degree is sent to PLC1, and whether PLC1 compares present rotation angel degree identical with set angle, or with 45 °
As a example by, if present rotation angel degree is not equal to 45 °, PLC1 adjustment present rotation angel degree, until stepping
The present rotation angel degree of the rotation of motor 2 is 45 °.
Display screen is used to show the testing result of PLC, the numerical value of set angle, the numerical value of the anglec of rotation.
Display screen 9 can be touch screen, and be electrically connected with PLC1 by RS485 interfaces.Detection correction system can
With including detection correction mode and automatic detection correction mode manually, it is possible to voluntarily selected by touch screen
Required pattern.In addition, other associative operations in system can also be realized by touch screen, for example, lead to
Cross touch screen and the set angle of PLC1, difference set point etc. are set.
In the present embodiment, detection correction system also includes memory module and alarm module.Memory module is used for
The testing result of storage PLC1, the numerical value of set angle, the numerical value of the anglec of rotation.Alarm module is used for
When the testing result of PLC1 is that magneto resistive angular sensor 5 is unqualified, warning message is pointed out.If working as
Front detection correction system is detection correction system manually, and operating personnel can be being touched according to warning message
Operate on screen, realize the correction of magneto resistive angular sensor 5.
Although the foregoing describing the specific embodiment of the present invention, those skilled in the art should manage
Solution, this is merely illustrative of, and protection scope of the present invention is defined by the appended claims.Ability
The technical staff in domain, can be to these embodiments on the premise of the principle and essence without departing substantially from the present invention
Various changes or modifications are made, but these changes and modification each fall within protection scope of the present invention.
Claims (10)
1. the detection of a kind of magneto resistive angular sensor corrects system, it is characterised in that the detection school
Positive system includes PLC, motor, power transmission shaft, rotary magnet, magneto resistive angular sensor and MCU；
The PLC is electrically connected with the motor and the MCU respectively, and the motor passes through
The power transmission shaft is connected with the rotary magnet, and the MCU is electrically connected with the magneto resistive angular sensor
Connect；
The PLC is used to arrange a set angle and control the motor to drive the rotary magnet
The set angle is rotated from an initial position；
The magneto resistive angular sensor is used for the anglec of rotation for detecting the rotary magnet, the MCU
For gathering the anglec of rotation, and the anglec of rotation is sent to the PLC；
The PLC is additionally operable to detect whether the set angle and the difference of the anglec of rotation exceed one
Set point, if so, then the testing result of the PLC is that the magneto resistive angular sensor is unqualified；
If it is not, then the testing result of the PLC is that the magneto resistive angular sensor is qualified.
2. the detection of magneto resistive angular sensor as claimed in claim 1 corrects system, and its feature exists
In, when the testing result of the PLC is that the magneto resistive angular sensor is unqualified, the PLC
Being additionally operable to control the motor drives the rotary magnet to rotate back to the initial position；
And the PLC sends calibration command to the magneto resistive angular sensor, the magneto resistive angular
Sensor resets zero point according to the current angular side-play amount for detecting.
3. the detection of magneto resistive angular sensor as claimed in claim 1 or 2 corrects system, and which is special
Levy and be, the detection correction system also includes absolute value encoder, the absolute value encoder with it is described
PLC is electrically connected, and the absolute value encoder is connected with the motor by shaft coupling；
The absolute value encoder is used for the present rotation angel degree that motor described in Real-time Collection is rotated, and
The present rotation angel degree is sent to the PLC, the PLC is additionally operable to currently rotate described in comparison
Angle is with the set angle and adjusts the motor rotation, until the present rotation angel degree and institute
State set angle identical.
4. the detection of magneto resistive angular sensor as claimed in claim 1 corrects system, and its feature exists
In the detection correction system also includes display screen, and the display screen is used for the inspection for showing the PLC
Survey result, the numerical value of the set angle, the numerical value of the anglec of rotation.
5. the detection of magneto resistive angular sensor as claimed in claim 4 corrects system, and its feature exists
In the display screen is touch screen.
6. the detection of magneto resistive angular sensor as claimed in claim 1 corrects system, and its feature exists
In the detection correction system also includes memory module, and the memory module is used to store the PLC
Testing result, the numerical value of the set angle, the numerical value of the anglec of rotation.
7. the detection of magneto resistive angular sensor as claimed in claim 1 corrects system, and its feature exists
In the detection correction system also includes alarm module, and the alarm module is for the PLC's
When testing result is that the magneto resistive angular sensor is unqualified, warning message is pointed out.
8. the detection of magneto resistive angular sensor as claimed in claim 1 corrects system, and its feature exists
In the rotary magnet is U-shaped rotary magnet.
9. the detection of magneto resistive angular sensor as claimed in claim 1 corrects system, and its feature exists
In the MCU is connected with the magneto resistive angular sensor by spi bus, and the MCU
It is connected with the PLC by serial bus.
10. the detection of magneto resistive angular sensor as claimed in claim 5 corrects system, and its feature exists
In the PLC is connected with the touch screen and the absolute value encoder respectively by RS485 interfaces.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201510609176.1A CN106546163A (en) | 2015-09-23 | 2015-09-23 | The detection correction system of magneto resistive angular sensor |
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| CN201510609176.1A CN106546163A (en) | 2015-09-23 | 2015-09-23 | The detection correction system of magneto resistive angular sensor |
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| CN111692963A (en) * | 2019-03-15 | 2020-09-22 | 和硕联合科技股份有限公司 | Angle sensor calibration method and angle sensor calibration device |
| CN113927629A (en) * | 2021-11-16 | 2022-01-14 | 国网湖南省电力有限公司 | Calibration system and calibration method for angle sensor of continuum mechanical arm |
| CN113959475A (en) * | 2021-10-27 | 2022-01-21 | 上海思博机械电气有限公司 | Angle sensor programming test equipment |
| CN113970312A (en) * | 2021-09-17 | 2022-01-25 | 深圳市恒天伟焱科技股份有限公司 | Angle detection method, angle detection device, computer program product and storage medium |
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