CN114777707A - Displacement sensor calibration system - Google Patents
Displacement sensor calibration system Download PDFInfo
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- CN114777707A CN114777707A CN202210336914.XA CN202210336914A CN114777707A CN 114777707 A CN114777707 A CN 114777707A CN 202210336914 A CN202210336914 A CN 202210336914A CN 114777707 A CN114777707 A CN 114777707A
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- displacement sensor
- measured
- displacement
- calibration system
- power supply
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
- G01B21/02—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring length, width, or thickness
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Abstract
The invention provides a displacement sensor calibration system, which mainly comprises a moving assembly, a sensor and a sensor, wherein the moving assembly is connected with a matched magnet in a sliding manner and is used for driving the matched magnet to move in a sensing area of a displacement sensor to be detected; the driving component is connected with the moving component and used for driving the moving component to operate; and the information processing module is connected with the displacement sensor to be measured and the driving assembly and is used for acquiring the measured displacement data of the displacement sensor to be measured, sending an operation control command to the driving assembly, converting the operation control command into real displacement data and comparing the measured displacement data with the real displacement data. The driving assembly controls the moving assembly to drive the matched magnet to move in the sensing area of the displacement sensor to be measured, and the information processing module compares the acquired real displacement with the measured displacement read from the displacement sensor to be measured and calibrates the real displacement in real time, so that the calibration accuracy is improved, and the labor cost and the time cost in the calibration process are reduced.
Description
Technical Field
The invention relates to the technical field of displacement sensor testing, in particular to a displacement sensor calibration system.
Background
The displacement sensor is also called as a linear sensor and is used for converting the measurement quantity of the physical size or mechanical displacement into electric quantity; the displacement sensor mainly comprises a displacement sensor and matched magnets, and the magnetism of different matched magnets has slight difference due to the reasons of the material of the magnets and the like, so that the parameters of the displacement sensor and the attached matched magnets are calibrated in real time during the production of the displacement sensor, and the measurement accuracy of the displacement sensor is ensured.
The calibration of the displacement sensor needs to accurately control the positions of the matched magnet and the displacement sensor, and the prior art mainly comprises the steps of moving the matched magnet to perform linear movement in a sensing area of the displacement sensor, reading displacement readings on a measuring scale, and matching calibration equipment connected with the sensor and upper computer calibration software. Writing a calibration parameter corresponding to each position; a large amount of labor cost and time cost are required to be invested in the whole calibration process, and the accuracy is required to be improved.
Disclosure of Invention
In order to improve the accuracy of the displacement sensor in the calibration process and reduce the manpower and time cost input in the calibration process, the invention provides a displacement sensor calibration system.
In a first aspect, in one embodiment, a displacement sensor calibration system is provided, which includes a displacement sensor to be measured and a magnet associated with the displacement sensor, and further includes:
the moving assembly is connected with the matched magnet in a sliding mode and used for driving the matched magnet to move in a sensing area of the displacement sensor to be detected;
the driving assembly is connected with the moving assembly and used for driving the moving assembly to operate;
and the information processing module is connected with the displacement sensor to be measured and the driving assembly and is used for acquiring the measured displacement data of the displacement sensor to be measured, sending an operation control command to the driving assembly, converting the operation control command into real displacement data and comparing the measured displacement data with the real displacement data.
In one embodiment, the moving assembly comprises a ball screw connected with the driving assembly, a slider connected with a ball nut, and a mating magnet carrier fixed on the slider and used for loading the mating magnet.
In one embodiment, the device further comprises two Hall limit switches respectively installed on the moving path of the sliding block, and the two Hall limit switches are respectively and electrically connected with the information processing module and used for limiting protection.
In one embodiment, the displacement sensor testing device further comprises a linear guide rail and a displacement sensor clamp, wherein the linear guide rail is parallel to the ball screw and is installed below the ball screw, and the displacement sensor clamp is fixed on the linear guide rail and is used for fixing the displacement sensor to be tested.
In one embodiment, the driving assembly includes a servo controller and a servo motor, the servo controller is electrically connected to the servo motor and the information processing module, the servo motor is connected to the moving assembly, and the servo controller is configured to receive an operation control command sent by the information processing module and control the servo motor to drive the moving assembly to operate.
In one embodiment, the information processing module comprises a PLC control module and an upper computer, the PLC control module is electrically connected with the driving assembly and the upper computer respectively, the upper computer is also in communication connection with the displacement sensor to be measured, and the upper computer is used for comparing measured displacement data with real displacement data and calibrating the displacement sensor to be measured in real time.
In one embodiment, the PLC controller further comprises a starting switch and a reset switch which are respectively connected with the PLC control module, the starting switch is used for controlling the driving assembly to drive the moving assembly to operate in a forward direction, and the reset switch is used for controlling the driving assembly to drive the moving assembly to operate in a reverse direction.
In one embodiment, the displacement sensor further comprises a sensor connector, wherein the sensor connector is electrically connected with the displacement sensor to be measured, and the displacement sensor connector is provided with a plurality of interfaces.
In one embodiment, the displacement measuring device further comprises an oscilloscope which is electrically connected with any interface of the connector of the displacement sensor to be measured and is used for monitoring the signal output of the displacement sensor to be measured.
In one embodiment, the information processing module further includes a communication module, and the communication module is electrically connected to any one of the interfaces of the displacement sensor connector and the upper computer, respectively, and is configured to perform communication interaction.
Compared with the prior art, the invention has the following beneficial effects:
the driving assembly controls the moving assembly to drive the matched magnet to move in the sensing area of the displacement sensor to be measured, and the information processing module compares the acquired real displacement with the measured displacement read from the displacement sensor to be measured and calibrates the real displacement in real time, so that the calibration accuracy is improved, and the labor cost and the time cost in the calibration process are reduced.
Drawings
Fig. 1 is an electrical structural diagram of a displacement sensor calibration system according to an embodiment of the present invention.
Fig. 2 is a general view of a displacement sensor calibration device according to another embodiment of the present invention.
Fig. 3 is an exploded view of a displacement sensor calibration device according to another embodiment of the present invention.
In the above drawings: 1. a sensor connector to be tested; 2. a servo motor; 3. a slider; 4. a servo controller; 5. a PLC control module; 6. a system power supply; 7. starting a switch; 8. a reset switch; 9. a displacement sensor clamp; 10. a mating magnet carrier; 11. a mating magnet; 12. a ball screw; 13. a linear guide rail.
Detailed Description
The technical solution of the present invention is further described with reference to the drawings and the embodiments.
As shown in fig. 1, in an embodiment, the present invention provides a displacement sensor calibration system, which includes a displacement sensor to be measured and a magnet 11 associated with the displacement sensor, and further includes:
the moving assembly is connected with the matched magnet 11 in a sliding mode and used for driving the matched magnet 11 to move in a sensing area of the displacement sensor to be detected;
the driving assembly is connected with the moving assembly and used for driving the moving assembly to operate;
and the information processing module is connected with the displacement sensor to be measured and the driving assembly and is used for acquiring the measured displacement data of the displacement sensor to be measured, sending an operation control command to the driving assembly, converting the operation control command into real displacement data and comparing the measured displacement data with the real displacement data.
In the embodiment, the driving assembly controls the moving assembly to drive the matched magnet to move in the sensing area of the displacement sensor to be measured, and the information processing module compares the obtained real displacement with the measured displacement read from the displacement sensor to be measured and calibrates the real displacement in real time, so that the calibration accuracy is improved, and the labor cost and the time cost in the calibration process are reduced;
in addition, the matched magnet and the displacement sensor to be detected are in non-contact, so that the displacement sensor cannot be abraded even if the detection is repeated, and the reliability and the service life of the displacement sensor to be detected are improved.
As shown in fig. 2-3, in a preferred embodiment, the moving assembly includes a ball screw 12, a slider 3 and a mating magnet carrier 10, the ball screw 12 is connected to a driving assembly, the driving assembly drives the ball screw to rotate, a ball nut is connected to the slider, the ball nut is matched with the ball screw 12, when the ball screw is driven by the driving assembly to rotate clockwise, the ball nut drives the slider to move away from the driving assembly, when the ball screw is driven by the driving assembly to rotate counterclockwise, the ball nut drives the slider to move towards the driving assembly, and the mating magnet carrier 10 is fixed on the slider 3 and is used for loading the mating magnet 11.
In the above embodiment, the ball screw 12 and the ball nut are matched to drive the slider 3 to realize linear displacement, so that the linear displacement sensor has the advantages of stable motion, high transmission efficiency and high moving precision, and the precision of the displacement sensor can be greatly improved.
As shown in fig. 1, in a preferred embodiment, the device further includes two hall limit switches respectively installed on the moving path of the slider, and the two hall limit switches are respectively electrically connected with the information processing module for limiting protection.
Specifically, when the driving assembly controls the sliding block to drive the matched magnet to move to the position of the hall limit switch, a hall element on a switch detection surface of the hall limit switch generates a hall effect due to the existence of a magnetic object, the hall limit switch sends a stop control signal to the PLC control module, and the PLC control module controls the driving assembly to stop acting.
In the embodiment, the Hall limit switch is used for limiting the movement of the sliding block, so that the sliding block is prevented from being stuck after overrun movement to damage a servo motor.
In one embodiment, the displacement sensor testing device further comprises a linear guide rail 13 and a displacement sensor clamp 1, wherein the linear guide rail 13 is parallel to the ball screw 12 and is installed below the ball screw 12, and the displacement sensor clamp 1 is fixed on the linear guide rail 13 and is used for fixing the displacement sensor to be tested.
In a preferred embodiment, the driving assembly includes a servo controller and a servo motor, the servo controller is electrically connected to the servo motor and the information processing module, the servo motor is connected to the moving assembly, and the servo controller is configured to receive an operation control command sent by the information processing module and control the servo motor to drive the moving assembly to operate.
In the embodiment, the servo motor is adopted to provide the driving force for the moving assembly, the operation is stable when the moving assembly operates at a low speed, the precision is high, and the precision of the displacement sensor calibration system can be greatly improved.
In a preferred embodiment, the information processing module comprises a PLC control module and an upper computer, the PLC control module is electrically connected with the driving assembly and the upper computer respectively, the upper computer is further in communication connection with the displacement sensor to be measured, and the upper computer is used for comparing measured displacement data with real displacement data and calibrating the displacement sensor to be measured in real time.
Specifically, the length and the calibration position of each movement of the sliding block can be set through the upper computer, a control command is sent to the PLC control module, and the calibration position matched with the displacement sensor can be configured according to different types of displacement sensors; the PLC control module receives a control command sent by an upper computer through an RS232 interface, controls the servo motor to drive the ball screw to rotate and then move the sliding block, and the matched magnet is installed on the moving sliding block, so that the matched magnet can be accurately controlled to realize accurate displacement on the guide rail; and meanwhile, the upper computer receives the measured displacement data sent by the displacement sensor to be measured in real time, compares the measured displacement data with the real displacement data in real time, and writes calibration data into the displacement sensor to be measured if the measured displacement data is inconsistent with the real displacement data.
As shown in fig. 2 to 3, in a preferred embodiment, the PLC apparatus further includes a start switch 7 and a reset switch 8 respectively connected to the PLC control module, where the start switch 7 is configured to control the driving assembly to drive the moving assembly to operate in a forward direction, and the reset switch 8 is configured to control the driving assembly to drive the moving assembly to operate in a reverse direction.
As shown in fig. 2 to 3, in a preferred embodiment, the displacement sensor connector further includes a sensor connector 1, the sensor connector 1 is electrically connected to the displacement sensor to be measured, and the displacement sensor connector 1 has a plurality of interfaces.
In a preferred embodiment, the displacement measuring device further comprises an oscilloscope which is electrically connected with any interface of the connector of the displacement sensor to be measured and is used for monitoring the signal output of the current displacement sensor to be measured.
In a preferred embodiment, the information processing module further comprises a communication module, and the communication module is electrically connected with any one of the interfaces of the displacement sensor connector and the upper computer respectively and is used for performing communication interaction.
In a preferred embodiment, a system power supply 6 is further included and is connected to the PLC control module and the servo controller, respectively, for providing power to the displacement sensor calibration system.
Finally, the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all of them should be covered in the claims of the present invention.
Claims (10)
1. Displacement sensor calibration system, including displacement sensor and supporting magnet that awaits measuring, its characterized in that still includes:
the moving assembly is connected with the matched magnet in a sliding mode and used for driving the matched magnet to move in a sensing area of the displacement sensor to be detected;
the driving assembly is connected with the moving assembly and is used for driving the moving assembly to operate;
and the information processing module is connected with the displacement sensor to be measured and the driving assembly and is used for acquiring the measured displacement data of the displacement sensor to be measured, sending an operation control command to the driving assembly, converting the operation control command into real displacement data and comparing the measured displacement data with the real displacement data.
2. The displacement sensor calibration system of claim 1, wherein: the moving assembly comprises a ball screw, a sliding block and a matched magnet carrier, the ball screw is connected with the driving assembly, a ball nut is connected onto the sliding block and matched with the ball screw, and the matched magnet carrier is fixed on the sliding block and used for loading matched magnets.
3. The displacement sensor calibration system of claim 2, wherein:
the two Hall limit switches are respectively installed on the moving path of the sliding block, and are respectively electrically connected with the information processing module and used for limiting protection.
4. The displacement sensor calibration system of claim 3, wherein: the linear guide rail is parallel to the ball screw and is installed below the ball screw, and the displacement sensor clamp is fixed on the linear guide rail and used for fixing the displacement sensor to be detected.
5. The displacement sensor calibration system of claim 1, wherein: the driving assembly comprises a servo controller and a servo motor, the servo controller is respectively electrically connected with the servo motor and the information processing module, the servo motor is connected with the moving assembly, and the servo controller is used for receiving an operation control command sent by the information processing module and controlling the servo motor to drive the moving assembly to act.
6. A displacement sensor calibration system according to claim 1, wherein: the information processing module comprises a PLC control module and an upper computer, the PLC control module is respectively electrically connected with the driving assembly and the upper computer, the upper computer is further connected with the displacement sensor to be measured in a communication mode, and the upper computer is used for comparing measured displacement data with real displacement data and calibrating the displacement sensor to be measured in real time.
7. The displacement sensor calibration system of claim 6, wherein: the PLC control module is connected with the power supply, the power supply is connected with the PLC control module, the power supply is connected with the power supply, the PLC control module is connected with the power supply, the power supply is connected with the PLC control module, the power supply is connected with the power supply, and the power supply, and the power supply.
8. The displacement sensor calibration system of claim 1, wherein: still include a sensor connector, the sensor connector with the displacement sensor electricity that awaits measuring is connected, the displacement sensor connector has a plurality of interfaces.
9. A displacement sensor calibration system according to claim 8, wherein: the displacement sensor connector to be measured is characterized by further comprising an oscilloscope electrically connected with any interface of the displacement sensor connector to be measured, and the oscilloscope is used for monitoring the signal output of the displacement sensor to be measured currently.
10. The displacement sensor calibration system of claim 8, wherein: the information processing module further comprises a communication module, and the communication module is electrically connected with any one interface of the displacement sensor connector and the upper computer respectively and used for communication interaction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210336914.XA CN114777707A (en) | 2022-04-01 | 2022-04-01 | Displacement sensor calibration system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210336914.XA CN114777707A (en) | 2022-04-01 | 2022-04-01 | Displacement sensor calibration system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114777707A true CN114777707A (en) | 2022-07-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210336914.XA Pending CN114777707A (en) | 2022-04-01 | 2022-04-01 | Displacement sensor calibration system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114777707A (en) |
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2022
- 2022-04-01 CN CN202210336914.XA patent/CN114777707A/en active Pending
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