CN220602584U - Sensor correction device - Google Patents
Sensor correction device Download PDFInfo
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- CN220602584U CN220602584U CN202322380002.5U CN202322380002U CN220602584U CN 220602584 U CN220602584 U CN 220602584U CN 202322380002 U CN202322380002 U CN 202322380002U CN 220602584 U CN220602584 U CN 220602584U
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- linkage adjusting
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- 238000012937 correction Methods 0.000 title abstract description 5
- 238000012360 testing method Methods 0.000 claims abstract description 60
- 238000001514 detection method Methods 0.000 claims abstract description 37
- 239000004020 conductor Substances 0.000 claims abstract description 7
- 239000000696 magnetic material Substances 0.000 claims description 3
- 239000003638 chemical reducing agent Substances 0.000 description 4
- 238000003780 insertion Methods 0.000 description 3
- 230000037431 insertion Effects 0.000 description 3
- 238000013459 approach Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 208000033999 Device damage Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
Abstract
The application relates to the field of sensor detection, in particular to a sensor correction device, which comprises a base station, a fixing assembly, a magnetic source piece, a three-axis linkage adjusting assembly and a test gauge block; the fixed component and the triaxial linkage adjusting component are fixedly arranged on the same plane of the base station, and the magnetic source piece is fixedly connected with the fixed component; the test gauge block is detachably connected with one end, close to the magnetic source piece, of the triaxial linkage adjusting assembly, and the triaxial linkage adjusting assembly can drive the test gauge block to be close to the magnetic source piece; the test gauge block is made of conductive materials and has the same size as the sensor to be tested; the magnetic source and the test block are connected in series in a power supply loop, and when the test block is abutted against the magnetic source, the power supply loop is conducted; the detection module is connected to the signal input end of the control module and is used for detecting whether the power supply loop is conducted or not and sending a conducting signal to the detection module when the power supply loop is conducted so that the control module outputs a stop signal to control the three-axis linkage adjusting assembly to stop.
Description
Technical Field
The present application relates to the field of sensor detection, and in particular, to a sensor calibration device.
Background
The sensor needs to be detected and calibrated before leaving the factory, and the corresponding testing methods of the sensors with different detection principles are also different. A magnetic sensor is a linear sensor that typically characterizes a sensed parameter based on an induced voltage of a magnetic field that is related to the strength of the magnetic field.
Such as wheel speed detecting devices in automobiles, are detected by magnetic sensors. The signal wheel is arranged on the wheel hub, the signal wheel is made of magnetic permeability material, the signal wheel is used as a magnetic source part, and the magnetic sensor is fixed on the knuckle; when the wheel rotates, the signal wheel rotates synchronously, so that the density (magnetic flux) of magnetic force lines passing through the Hall element in the magnetic sensor changes, hall voltage is generated according to Lenz's law, and the rotating speed of the wheel is obtained according to the Hall voltage.
Since the magnetic sensor is a linear sensor, it is necessary to detect the linear accuracy of the magnetic sensor during detection, that is, to detect the measurement accuracy of the magnetic sensor at a plurality of positions at different distances from the magnetic source, where it is particularly critical to determine the position of the magnetic sensor at zero distance from the magnetic source.
In the related art, when a detector detects a sensor, after the sensor is fixed, the sensor is controlled to be close to a magnetic source, and after the sensor is observed through eyes and is determined to be in contact with the magnetic source through experience, the sensor is controlled to be gradually far away from the magnetic source, so that the linear precision of the sensor is measured.
However, the detection personnel uses glasses and experience to determine the zero distance position of the sensor and the magnetic source, and errors always exist, so that the detection result of the sensor also has deviation.
Disclosure of Invention
To improve accuracy of detection results of the sensor, the present application provides a sensor orthotic device.
The sensor correction device provided by the application adopts the following technical scheme:
a sensor calibration device comprising: the device comprises a base, a fixing assembly, a magnetic source piece, a triaxial linkage adjusting assembly and a test gauge block;
the fixing component and the triaxial linkage adjusting component are fixedly arranged on the same plane of the base station, and the magnetic source piece is fixedly connected with the fixing component;
the test gauge block is detachably connected with one end, close to the magnetic source, of the triaxial linkage adjusting assembly, and the triaxial linkage adjusting assembly can drive the test gauge block to be close to the magnetic source;
the test gauge block is made of conductive materials and has the same size as the sensor to be tested, the magnetic source piece and the test gauge block are connected in series in a power supply loop, and when the test gauge block abuts against the magnetic source piece, the power supply loop is conducted;
the power supply circuit comprises a power supply circuit, a control module and a detection module, wherein the power supply circuit is connected with the control module, the detection module is used for detecting whether the power supply circuit is conducted or not, and sending a conduction signal to the detection module when the power supply circuit is conducted;
the control module is configured to output a stop signal to control the module to output a stop signal to control the three-axis linkage adjustment assembly to stop when the on signal is received.
By adopting the technical scheme, the zero-distance abutting position of the sensor to be detected and the magnetic source piece is determined by replacing the sensor to be detected with the test block with the same size as the sensor to be detected, so that the probability of damage to the sensor to be detected can be reduced; meanwhile, when the test block abuts against the magnetic source, the detection module can send a conduction signal to the control module, so that the control module outputs a stop signal and controls the three-axis linkage adjusting assembly to stop, namely, the test block can stay at a zero-distance position of abutting against the magnetic source, after the sensor to be detected corresponding to the test block is used for replacing the test block, the sensor to be detected can be located at a position of abutting against the magnetic source, the situation that the sensor to be detected is not abutted against or transitionally abutted against the magnetic source is reduced, and then the accuracy of a detection result of the sensor to be detected can be improved.
In one possible implementation manner, the fixing component comprises a servo motor and a main shaft, the magnetic source part is a signal wheel made of magnetic materials, the servo motor is fixedly arranged on one plane of the base station, the main shaft is coaxially fixed with an output shaft of the servo motor, the length direction of the main shaft is parallel to the plane on which the base station is fixedly provided with the servo motor, and the main shaft is coaxially fixed with the signal wheel.
In one possible implementation manner, a fixed tool is fixedly arranged at one end, close to the fixed assembly, of the triaxial linkage adjusting assembly, and the test gauge block is detachably connected with the fixed tool.
In one possible implementation manner, the control module is one of a single-chip microcomputer or a PLC controller.
In summary, the present application includes at least one of the following beneficial technical effects:
1. the zero-distance abutting position of the sensor to be detected and the magnetic source piece is determined by replacing the sensor to be detected with a test block with the same size as the sensor to be detected, so that the probability of damage to the sensor to be detected can be reduced; meanwhile, when the test block abuts against the magnetic source, the detection module can send a conduction signal to the control module, so that the control module outputs a stop signal and controls the three-axis linkage adjusting assembly to stop, namely, the test block can stay at a zero-distance position of abutting against the magnetic source, after the sensor to be detected corresponding to the test block is used for replacing the test block, the sensor to be detected can be located at a position of abutting against the magnetic source, the situation that the sensor to be detected is not abutted against or transitionally abutted against the magnetic source is reduced, and then the accuracy of a detection result of the sensor to be detected can be improved.
Drawings
FIG. 1 is a schematic diagram of a sensor calibration device according to an embodiment of the present application;
fig. 2 is a schematic diagram of connection between a detection module and a control module in an embodiment of the present application.
Reference numerals illustrate: 1. a base station; 2. a fixing assembly; 21. a servo motor; 22. a main shaft; 23. a bearing; 3. the three-axis linkage adjusting component; 31. fixing the tool; 4. a magnetic source; 5. a test gauge block; 6. a detection module; 7. and a control module.
Detailed Description
The present application is described in further detail below in conjunction with figures 1-2.
In the related art, when detecting a sensor to be detected, a detecting person needs to control the sensor to be detected to approach the magnetic source 4 first, and after observing through eyes and empirically determining that the sensor to be detected is abutted to the magnetic source 4, control the sensor to be detected to gradually get away from the magnetic source 4, so as to measure the linear precision of the sensor to be detected. However, the inspector determines whether the sensor to be measured abuts against the magnetic source 4 through eyes and experience, and there are the following two problems.
Problem 1: the position of the sensor to be detected, which is judged by the detection personnel, abutting against the magnetic source piece 4 is that after the actual sensor to be detected abuts against the magnetic source piece 4, the external equipment still applies pressure to the sensor to be detected, so that the sensor to be detected generates deformation or internal structure deviation, and the detection result of the sensor to be detected has a certain error. Further, there is a possibility that the external device damages the sensor to be measured.
Problem 2: the position of the sensor to be detected, which is judged by the detecting personnel, is abutted against the magnetic source 4, and a gap is still remained between the sensor to be detected and the magnetic source 4, at this time, since the sensor to be detected is not fully abutted against the magnetic source 4, the position of the sensor to be detected is taken as the zero distance position where the sensor to be detected is abutted against the magnetic source 4 by the subsequent detecting personnel, so that a certain error exists in the detection result of the sensor to be detected.
In order to improve accuracy of a detection result of a sensor to be detected and reduce influence of errors, an embodiment of the application discloses a sensor correction device, and referring to fig. 1 and 2, the device comprises a base 1, a fixing assembly 2, a magnetic source 4, a three-axis linkage adjusting assembly 3, a test block 5, a detection module 6 and a control module 7.
Referring to fig. 1 and 2, specifically, the fixing assembly 2 and the triaxial linkage adjusting assembly 3 are fixedly arranged on the same plane of the base 1, and the magnetic source 4 is fixedly connected with the fixing assembly 2. The size of the test block 5 is the same as that of the sensor to be tested, and the test block 5 is made of conductive materials and has the same size as that of the sensor to be tested. The test gauge block 5 is detachably connected with one end, close to the magnetic source piece 4, of the triaxial linkage adjusting assembly 3, and when the test gauge block 5 is fixed with the triaxial linkage adjusting assembly 3, the triaxial linkage adjusting assembly 3 can drive the test gauge block 5 to be close to the magnetic source piece 4.
The magnetic source 4 and the test block 5 are connected in series in a power supply loop, and when the test block 5 abuts against the magnetic source 4, the power supply loop is conducted. The detection module 6 is connected to the signal input end of the control module 7, and the detection module 6 is used for detecting whether the power supply loop is conducted or not and sending a conducting signal to the detection module 6 when the power supply loop is conducted; the control module 7 is configured to output a stop signal to control the three axial respective corresponding driving devices of the three-axis linkage adjustment assembly 3 to stop operation when receiving the on signal.
In the scheme of the embodiment of the application, when the sensor to be measured is measured, the abutting zero distance position of the sensor to be measured and the magnetic source piece 4 is determined. The test mass 5 can be driven in multiple directions toward and away from the magnetic source 4 by the tri-axial linkage adjustment assembly 3. The base station 1 is used for setting the plane of the three-axis linkage adjusting component 3 and the plane of the fixing component 2 as a reference plane, wherein the three-axis linkage adjusting component 3 can be axially adjusted: the first axial direction parallel to the widthwise direction of the base 1 on the reference surface, the second axial direction parallel to the lengthwise direction of the base 1 on the reference surface, and the third axial direction perpendicular to the reference surface are respectively. The three-axis linkage adjustment assembly 3 can drive the test mass 5 to displace in three axial directions to approach or depart from the magnetic source 4.
Further, in order to reduce damage to the sensor to be measured, in the embodiment of the present application, when determining the abutting zero distance position between the sensor to be measured and the magnetic source 4, the sensor to be measured is replaced by the test block 5, where the test block 5 and the corresponding sensor to be measured have the same size and are made of conductive materials.
When the three-axis linkage adjusting assembly 3 drives the test block 5 to be close to the magnetic source 4, the magnetic source 4 and the test block 5 are connected in series in a power supply loop, and when the test block 5 is abutted against the magnetic source 4, the power supply loop is conducted; when the detection module 6 detects that the power supply loop where the magnetic source 4 is located is conducted, a conducting signal can be sent to the control module 7, the control module 7 is configured to output a stopping signal to control three driving devices corresponding to the three axial directions of the three-axis linkage adjusting assembly 3 to stop running when the conducting signal is received, and then the three-axis linkage adjusting assembly 3 stops driving the test block 5 to move, namely the test block 5 and the magnetic source 4 can be just abutted.
When the sensor to be detected is detected, the sensor to be detected is only required to replace the test gauge block 5, and the test can be started from the zero-distance position where the test gauge block 5 is abutted against the magnetic source piece 4, so that errors caused by the problem 1 and the possibility that the sensor to be detected is damaged are reduced, and meanwhile, errors caused by the problem 2 are reduced, and the accuracy of the detection result of the sensor to be detected is improved.
Referring to fig. 1 and 2, specifically, the fixing assembly 2 includes a servo motor 21, a main shaft 22 and a bearing 23, the magnetic source 4 is a signal wheel made of magnetic material, the servo motor 21 is fixedly arranged on a plane of the base 1, and one end of the main shaft 22 is coaxially fixed with an output shaft of the servo motor 21; a vertical fixing plate is arranged on the reference surface of the base 1, so that the bearing 23 is embedded in the fixing plate, and the bearing 23 is higher than the reference surface. The main shaft 22 passes through the inner ring of the bearing 23, the main shaft 22 is in interference fit with the inner ring of the bearing 23, the length direction of the main shaft 22 is parallel to the plane of the base 1 for fixing the servo motor 21, and one end of the main shaft 22 far away from the servo motor 21 is coaxially fixed with the signal wheel. One end of the triaxial linkage adjusting component 3, which is close to the fixed component 2, is fixedly provided with a fixed tool 31, and the test gauge block 5 is detachably connected with the fixed tool 31. Specifically, the test gauge block 5 and the fixing tool 31 may be connected by bolts, or an insertion hole may be formed in the test gauge block 5, a corresponding fixing pin is fixedly arranged on the fixing tool 31, and the fixing pin and the insertion hole are in insertion connection to fix the test gauge block 5.
Further, the bearing 23 may be replaced by a speed reducer, and if the bearing 23 is replaced by a speed reducer, an end of the main shaft 22 away from the servo motor 21 is coaxially fixed with an input shaft of the speed reducer, and an output shaft end of the speed reducer is coaxially fixed with the magnetic source 4.
Further, instead of directly connecting the test block 5 and the magnetic source 4 in series in a power supply circuit, specifically, connecting the fixture 31 made of a conductive material and the magnetic source 4 in series in a power supply circuit, when the test block 5 is fixed on the fixture 31, the test block 5 and the magnetic source 4 are connected in series in the same power supply circuit.
Referring to fig. 1 and 2, in one possible implementation, the power supply loop includes a power source VCC for providing a voltage, and further includes a first resistor R1 and a second resistor R2, and an indicator light T. The detection module 6 is an NPN type triode Q, the control module 7 is one of a single-chip microcomputer M or a PLC controller, and in this embodiment, the control module 7 is taken as the single-chip microcomputer for example.
Referring to fig. 1 and 2, specifically, one end of the first resistor R1 is connected to the power source VCC, and the other end of the first resistor R1 is connected to the magnetic source 4; one end of the indicator lamp T is connected to the fixed tool 31, the other end of the indicator lamp T is connected to the base electrode of the triode Q, the emitter electrode of the triode Q is connected in series with the second resistor R2 and then grounded, the collector electrode of the triode Q is connected to VCC, and the collector electrode of the triode Q is connected to one input pin of the singlechip M, such as a general purpose multifunctional GPIO pin. The GPIO pin is configured to default high. The three axial directions of the three-axis linkage adjusting component 3 are respectively provided with a driving motor, and when the GPIO pin is at a high level, the singlechip M is configured to not output any control instruction for the three driving motors.
When the test gauge block 5 is abutted to the magnetic source part 4, the indicator lamp T is lightened to play a role in prompting a detection person, meanwhile, the base electrode of the triode Q is input with high level, the collector electrode of the triode Q is conducted with the emitter electrode, the collector electrode end of the triode Q generates voltage drop, and then the low level is input to the GPIO pin of the singlechip M. The singlechip M is configured to output a stop signal to control three driving motors of the three-axis linkage adjusting component 3 to stop when the GPIO pin is input to a low level.
Of course, the above embodiment only discloses one possible structure and connection relationship of the detection module 6 and the control module 7, and the specific connection relationship and structure of the detection module 6 and the control module 7 in the embodiment of the present application are not limited thereto, as long as the connection relationship and structure of the functional limitation of the detection module 6 and the control module 7 in the embodiment of the present application can be satisfied, which is not specifically limited in the embodiment of the present application.
In fact, a sensor orthotic device provided in an embodiment of the present application is not only suitable for use with one type of sensor, e.g., photoelectric sensors, distance sensors, and displacement sensors, but the device may be used to detect. In this embodiment of the present application, only a distance sensor is used for schematic illustration, for example, the magnetic source 4 may be replaced by a corresponding reference plane plate to be fixed by the fixing component 2, the three-axis linkage adjusting component 3 drives a gauge block with the same size as that of the distance sensor to be measured to be close to or far away from the reference plane plate, the reference plane plate and the gauge block are connected in series in a same power supply loop, and when the gauge block abuts against the reference plane plate, the three-axis linkage adjusting component 3 stops, so that the gauge block can stop at a position with zero distance from the position just abutting against the reference plane plate. It should be noted that the corresponding gauge blocks of any type of sensor to be measured are made of conductive materials.
The foregoing are all preferred embodiments of the present application, and are not intended to limit the scope of the present application in any way, therefore: all equivalent changes in structure, shape and principle of this application should be covered in the protection scope of this application.
Claims (4)
1. A sensor calibration apparatus, comprising: the device comprises a base station (1), a fixing assembly (2), a magnetic source (4), a triaxial linkage adjusting assembly (3) and a test gauge block (5);
the fixing component (2) and the triaxial linkage adjusting component (3) are fixedly arranged on the same plane of the base station (1), and the magnetic source piece (4) is fixedly connected with the fixing component (2);
the test gauge block (5) is detachably connected with one end, close to the magnetic source piece (4), of the triaxial linkage adjusting assembly (3), and the triaxial linkage adjusting assembly (3) can drive the test gauge block (5) to be close to the magnetic source piece (4);
the test gauge block (5) is made of conductive materials and has the same size as a sensor to be tested, the magnetic source (4) and the test gauge block (5) are connected in series in a power supply loop, and when the test gauge block (5) is abutted against the magnetic source (4), the power supply loop is conducted;
the power supply circuit further comprises a detection module (6) and a control module (7), wherein the detection module (6) is connected to the signal input end of the control module (7), and the detection module (6) is used for detecting whether the power supply circuit is conducted or not and sending a conduction signal to the detection module (6) when the power supply circuit is conducted;
the control module (7) is configured to output a stop signal to control the module (7) to output a stop signal to control the three-axis linkage adjustment assembly (3) to stop when the on signal is received.
2. A sensor calibration device according to claim 1, wherein: the fixing assembly (2) comprises a servo motor (21) and a main shaft (22), the magnetic source part (4) is a signal wheel made of magnetic materials, the servo motor (21) is fixedly arranged on one plane of the base station (1), the main shaft (22) is coaxially fixed with an output shaft of the servo motor (21), the length direction of the main shaft (22) is parallel to the plane of the base station (1) for fixing the servo motor (21), and the main shaft (22) is coaxially fixed with the signal wheel.
3. A sensor calibration device according to claim 1, wherein: the three-axis linkage adjusting assembly (3) is close to one end of the fixing assembly (2) and fixedly provided with a fixing tool (31), and the test gauge block (5) is detachably connected with the fixing tool (31).
4. A sensor calibration device according to claim 1, wherein: the control module (7) is one of a singlechip or a PLC.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322380002.5U CN220602584U (en) | 2023-09-02 | 2023-09-02 | Sensor correction device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322380002.5U CN220602584U (en) | 2023-09-02 | 2023-09-02 | Sensor correction device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220602584U true CN220602584U (en) | 2024-03-15 |
Family
ID=90176433
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322380002.5U Active CN220602584U (en) | 2023-09-02 | 2023-09-02 | Sensor correction device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220602584U (en) |
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2023
- 2023-09-02 CN CN202322380002.5U patent/CN220602584U/en active Active
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