CN109061530B - Permanent magnetization detection device for magnet and measurement control method thereof - Google Patents
Permanent magnetization detection device for magnet and measurement control method thereof Download PDFInfo
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- CN109061530B CN109061530B CN201810611822.1A CN201810611822A CN109061530B CN 109061530 B CN109061530 B CN 109061530B CN 201810611822 A CN201810611822 A CN 201810611822A CN 109061530 B CN109061530 B CN 109061530B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R33/00—Arrangements or instruments for measuring magnetic variables
- G01R33/12—Measuring magnetic properties of articles or specimens of solids or fluids
- G01R33/1215—Measuring magnetisation; Particular magnetometers therefor
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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Abstract
The invention discloses a permanent magnet magnetization detection device and a measurement control method thereof. The device belongs to the technical field of magnetic force intensity detection of magnets, and the magnetic field of a detected magnet has small interference to magnetic force detection equipment, high measurement speed and easy measurement. The device comprises a microcontroller, a memory, a data processing module and a horizontal table, wherein a vertical pipe is arranged right above the horizontal table, a left light shield and a right light shield are respectively and hermetically connected to the outer surface of the left side wall and the outer surface of the right side wall of the vertical pipe, a left side wall hole and a right side wall hole which are horizontally and oppositely arranged are respectively arranged on the left side wall and the right side wall of the vertical pipe, a light emitting mechanism is arranged in the left light shield, and a light receiving mechanism is arranged in the right light shield; an upper shading cloth and a lower shading cloth are respectively arranged at the upper pipe orifice and the lower pipe orifice of the vertical pipe, and a reference magnet is movably arranged in the vertical pipe between the upper shading cloth and the lower shading cloth; the memory, the data processing module, the light emitting mechanism and the light receiving mechanism are respectively connected with the microcontroller.
Description
Technical Field
The invention relates to the technical field of magnetic force intensity detection of magnets, in particular to a permanent magnet magnetization detection device and a measurement control method thereof.
Background
The existing device for measuring the magnetic force intensity of the magnet generally adopts a magnetic measuring instrument to measure, but the existing magnetic measuring instrument is internally provided with more electronic components, and the electronic components can be interfered by the magnetic field of the measured magnet in the using process, so that inaccurate measurement is caused; since the magnetic measuring instrument must be electrically measured, even if the magnetic field strength of the measured magnetic body is large, the electronic components in the magnetic measuring instrument may be damaged.
Disclosure of Invention
The invention aims to solve the defects of the prior magnetic measuring instrument, and provides the permanent magnet magnetization detecting device with small interference of the magnetic field of the detected magnet on magnetic force detecting equipment, high measuring speed, easy measurement, simple structure and high reliability and the measuring control method thereof.
The technical problems are solved by the following technical proposal:
the permanent magnetization detection device of the magnet comprises a microcontroller, a memory, a data processing module and a horizontal table, wherein a vertical pipe is arranged right above the horizontal table, and the pipe center line of the vertical pipe is perpendicular to the upper surface of the horizontal table; a left light shield and a right light shield are respectively and hermetically connected to the outer surface of the left side wall and the outer surface of the right side wall of the vertical pipe, a left side wall hole and a right side wall hole which are horizontally and oppositely arranged are respectively arranged on the left side wall and the right side wall of the vertical pipe, and the left side wall hole and the right side wall hole are respectively surrounded by a cover opening of the left light shield and a cover opening of the right light shield; a light emitting mechanism which horizontally emits light into parallel light is arranged in the left light shield, and a light receiving mechanism is arranged in the right light shield; an upper shading cloth and a lower shading cloth are respectively arranged at the upper pipe orifice and the lower pipe orifice of the vertical pipe, and a reference magnet is movably arranged in the vertical pipe between the upper shading cloth and the lower shading cloth; the memory, the data processing module, the light emitting mechanism and the light receiving mechanism are respectively connected with the microcontroller.
The memory, the data processing module, the light emitting mechanism and the light receiving mechanism all work under the control of the microcontroller.
A measurement control method suitable for a permanent magnetization detection device of a magnet comprises the following steps:
fixedly placing the tested magnet on a horizontal table below the vertical pipe, and arranging the same magnetic poles of the reference magnet and the tested magnet in a way of opposite; the reference magnet is repelled by the upward magnetic force of the measured magnet and can be suspended in the vertical tube; the height of the reference magnet suspended in the vertical tube is related to the magnitude of the repulsive magnetic force of the measured magnet upwards; the higher the reference magnet is suspended in the vertical tube, the larger the repulsive magnetic force of the reference magnet on the tested magnet is, and the lower the reference magnet is suspended in the vertical tube, the smaller the repulsive magnetic force of the reference magnet on the tested magnet is;
under the condition that the light emitted by the light emitting mechanism is constant, the suspension height of the reference magnet in the vertical tube can be obtained by the intensity of illumination of the light emitted by the light emitting mechanism and not shielded by the reference magnet received by the light receiving mechanism;
therefore, the magnetic intensity of the detected magnet can be measured according to the intensity of illumination received by the light receiving mechanism, if the magnetic intensity of the detected magnet is high, the intensity of illumination received by the light receiving mechanism is high, and if the magnetic intensity of the detected magnet is low, the intensity of illumination received by the light receiving mechanism is low;
storing a plurality of illumination intensity values in a memory in advance, and simultaneously storing magnetic intensity values corresponding to the illumination intensity values in the memory;
when the magnetic force intensity of the measured magnetic body is measured, the magnetic force intensity value of the measured magnetic body can be obtained only by detecting the illumination intensity value of the measured magnetic body during measurement.
When the magnetic force intensity of the measured magnetic body is measured, the optical signal is not easy to be interfered by the magnetic field, so that the magnetic field of the measured magnetic body has small interference on magnetic force detection equipment, the measuring speed is high, the measuring is easy, the structure is simple, and the reliability is high.
Preferably, a support is arranged on the horizontal platform, a first cylinder with a telescopic rod vertically extending and contracting is arranged on the support, and the vertical pipe is fixedly connected to the telescopic rod of the first cylinder through a connecting rod; the bracket is also provided with a measured object height measuring mechanism; the control end of the measured object height measuring mechanism and the control end of the first cylinder are respectively connected with the microcontroller.
The measured object height measuring mechanism is convenient for detecting the height of the measured magnet, so that the height of the lower pipe orifice of the vertical pipe from the upper surface of the measured magnet is controlled by means of the first cylinder. Because the height of the lower pipe orifice of the vertical pipe from the upper surface of the measured magnet can influence the repulsive magnetic force of the reference magnet on the measured magnet in the vertical pipe. During measurement, it is recommended to maintain the height of the lower nozzle of the vertical tube from the upper surface of the magnet to be measured at a constant value.
Preferably, the measured object height measuring mechanism comprises a first motor, a horizontal rotating rod, a vertical rotating rod, a scribing plate, a first spring, a tension sensor and a fixing frame, wherein the rotating shaft of the first motor horizontally rotates; the first motor is fixed on the bracket, the left end of the horizontal rotating rod is fixedly connected to the rotating shaft of the first motor, the fixing frame is fixed on the horizontal rotating rod, and the tension sensor is fixed on the fixing frame; the vertical rotating rod is rotationally connected to the right end of the horizontal rotating rod, and the scribing plate is connected to the lower end of the vertical rotating rod; the upper end of the first spring is fixed at the upper end of the vertical rotating rod, and the lower end of the first spring is fixed on a drag hook of the tension sensor; the control end of the first motor and the tension sensor are respectively connected with the microcontroller.
The higher the measured magnet is, the smaller the tension force detected by the tension sensor is, and the lower the measured magnet is, the larger the tension force detected by the tension sensor is. The method comprises the steps of storing tension values of a plurality of tension sensors in a memory in advance, and simultaneously storing height values of detected magnets corresponding to the tension values in the memory; thus, the height of the magnet to be measured can be obtained according to the tension detected by the tension sensor during measurement. After the motor is rotated, the rotating shaft of the motor drives the horizontal rotating rod to horizontally rotate, the horizontal rotating rod horizontally rotates to drive the vertical rotating rod to move along the horizontal direction, when the scribing plate slides on the upper surface of the measured magnetic body, the vertical rotating rod vertically rotates, the tension on the spring is changed after the result of the vertical rotation of the vertical rotating rod, the tension sensor detects the tension on the spring and then transmits the tension value to the microcontroller, and the microcontroller can call the height value of the measured magnetic body corresponding to the tension value from the memory and provide the height value for a user. The measured object height measuring mechanism with the structure can be suitable for measuring the heights of measured magnetic bodies with various heights and various shapes, and has simple structure and good practicability.
Preferably, a clamping device with a control end connected with the microcontroller is also arranged on the horizontal table.
The clamping device can clamp the measured magnetic body placed on the horizontal table, and the measured magnetic body is not easy to move during measurement, so that the measurement is more accurate and reliable.
Preferably, the clamping device comprises four horizontal cylinders which are uniformly distributed on the edge of a circular detection area on the horizontal table, and the control end of each horizontal cylinder is respectively connected with the microcontroller.
The tested magnet placed on the horizontal table can be placed right under the vertical pipe under the matching of the telescopic rods of the four horizontal cylinders, so that the measurement is more accurate and reliable.
The invention can achieve the following effects:
when the magnetic force intensity of the measured magnetic body is measured, the optical signal is not easy to be interfered by the magnetic field, so that the magnetic field of the measured magnetic body has small interference on magnetic force detection equipment, the measuring speed is high, the measuring is easy, the structure is simple, and the reliability is high.
Drawings
Fig. 1 is a schematic diagram of a connection structure in a use state according to an embodiment of the invention.
Fig. 2 is a schematic view showing a partial connection structure of the light emitting mechanism and the light receiving mechanism according to the embodiment of the present invention.
Fig. 3 is a schematic diagram of a connection structure of a device for measuring the height of a measured object according to an embodiment of the present invention.
FIG. 4 is a schematic view of a connection structure of a measured magnet on a horizontal stand according to an embodiment of the present invention.
Fig. 5 is a schematic block diagram of a circuit principle connection structure according to an embodiment of the present invention.
Detailed Description
The invention is further described below with reference to the drawings and examples.
The embodiment, referring to fig. 1-5, of the permanent magnetization detection device of the magnet, comprises a microcontroller 30, a memory 31, a data processing module 32 and a horizontal table 23, wherein a vertical pipe 13 is arranged right above the horizontal table, and the pipe center line of the vertical pipe is perpendicular to the upper surface of the horizontal table; the outer surface of the left side wall and the outer surface of the right side wall of the vertical pipe are respectively and hermetically connected with a left light shield 7 and a right light shield 16, the left side wall and the right side wall of the vertical pipe are respectively provided with a left side wall hole 24 and a right side wall hole 25 which are horizontally and oppositely arranged, and the left side wall hole and the right side wall hole are respectively surrounded by a shield opening of the left light shield and a shield opening of the right light shield; a light emitting mechanism 6 which horizontally emits light into parallel light is arranged in the left light shield, and a light receiving mechanism 17 is arranged in the right light shield; an upper shading cloth 12 and a lower shading cloth 26 are respectively arranged at the upper pipe orifice and the lower pipe orifice of the vertical pipe, and a reference magnet 14 is movably arranged in the vertical pipe between the upper shading cloth and the lower shading cloth; the memory, the data processing module, the light emitting mechanism and the light receiving mechanism are respectively connected with the microcontroller.
The memory, the data processing module, the light emitting mechanism and the light receiving mechanism all work under the control of the microcontroller.
A support 8 is arranged on the horizontal platform, a first cylinder 9 with a telescopic rod 10 vertically telescopic is arranged on the support, and the vertical pipe is fixedly connected to the telescopic rod of the first cylinder through a connecting rod 11; the bracket is also provided with a measured object height measuring mechanism 1; the control end of the measured object height measuring mechanism and the control end of the first cylinder are respectively connected with the microcontroller. The measured object height measuring mechanism comprises a first motor 2, a horizontal rotating rod 5, a vertical rotating rod 18, a scribing plate 19, a first spring 28, a tension sensor 27 and a fixing frame 4, wherein the rotating shaft 3 horizontally rotates; the first motor is fixed on the bracket, the left end of the horizontal rotating rod is fixedly connected to the rotating shaft of the first motor, the fixing frame is fixed on the horizontal rotating rod, and the tension sensor is fixed on the fixing frame; the vertical rotating rod is rotationally connected to the right end of the horizontal rotating rod, and the scribing plate is connected to the lower end of the vertical rotating rod; the upper end of the first spring is fixed at the upper end of the vertical rotating rod, and the lower end of the first spring is fixed on a drag hook of the tension sensor; the control end of the first motor and the tension sensor are respectively connected with the microcontroller.
A clamping device 29 with a control end connected with the microcontroller is also arranged on the horizontal table. The clamping device comprises four horizontal air cylinders 20 which are uniformly distributed on the edge of a circular detection area on a horizontal platform, and the control end of each horizontal air cylinder is respectively connected with the microcontroller.
The light emitting mechanism 6 comprises a reflecting shade 33, a light source 34, a first convex lens 35, a second convex lens 36 and a third convex lens 37 which are respectively arranged in the left light shield and are sequentially arranged from left to right; the light receiving mechanism 17 comprises a convex lens IV 38 and an illumination intensity tester 39 which are respectively arranged in the right shade and are sequentially arranged from left to right; the control end of the light source and the illumination intensity tester are respectively connected with the microcontroller.
A first tube 41, a second tube 43, a first shading ring 40 with the outer edge connected on the inner wall of the left shading cover in a sealing way and a second shading ring 42 with the outer edge connected on the inner wall of the left shading cover in a sealing way are respectively arranged in the left shading cover; the right port of the first tube is in butt joint connection with the left side surface of the second shading ring; the right port of the second pipe is in butt joint connection with the outer port of the left side wall hole 24;
the first convex lens is fixed in the first shading ring, the second convex lens is fixed in the second shading ring, and the third convex lens is fixed in the second pipe; the diameter of the first convex lens is larger than that of the second convex lens; the diameter of the second convex lens is larger than that of the third convex lens; the diameter of the third convex lens is equal to that of the fourth convex lens; the light source is at the left focal point of the convex lens one. The center of the light source, the center of the first convex lens, the center of the second convex lens, the center of the third convex lens, the center of the fourth convex lens and the center of the detection surface of the illumination intensity tester all fall on the same straight line. When in use, the light emitted by the light source is detected by the illumination intensity tester after passing through the first convex lens 35, the second convex lens 36, the third convex lens and the fourth convex lens in sequence.
An anti-drop stop 44 is also provided in the lower nozzle of the vertical tube. And a third tube 45 is arranged in the right light shield, the left port of the third tube is in butt joint connection with the outer port of the right side wall hole 25, and the convex lens IV is fixed in the third light shield.
The telescopic rods 21 of the four horizontal cylinders can be matched to directly and directly place the tested magnetic bodies on the horizontal table under the vertical pipe and clamp the magnetic bodies, so that the measurement is more accurate and reliable.
The measured object height measuring mechanism is convenient for detecting the height of the measured magnet, so that the height of the lower pipe orifice of the vertical pipe from the upper surface of the measured magnet is controlled by means of the first cylinder. Because the height of the lower pipe orifice of the vertical pipe from the upper surface of the measured magnet can influence the repulsive magnetic force of the reference magnet on the measured magnet in the vertical pipe. During measurement, it is recommended to maintain the height of the lower nozzle of the vertical tube from the upper surface of the magnet to be measured at a constant value. The higher the measured magnet is, the smaller the tension force detected by the tension sensor is, and the lower the measured magnet is, the larger the tension force detected by the tension sensor is. The method comprises the steps of storing tension values of a plurality of tension sensors in a memory in advance, and simultaneously storing height values of detected magnets corresponding to the tension values in the memory; thus, the height of the magnet to be measured can be obtained according to the tension detected by the tension sensor during measurement. After the motor is rotated, the rotating shaft of the motor drives the horizontal rotating rod to horizontally rotate, the horizontal rotating rod horizontally rotates to drive the vertical rotating rod to move along the horizontal direction, when the scribing plate slides on the upper surface of the measured magnetic body, the vertical rotating rod vertically rotates, the tension on the spring is changed after the result of the vertical rotation of the vertical rotating rod, the tension sensor detects the tension on the spring and then transmits the tension value to the microcontroller, and the microcontroller can call the height value of the measured magnetic body corresponding to the tension value from the memory and provide the height value for a user. The measured object height measuring mechanism with the structure can be suitable for measuring the heights of measured magnetic bodies with various heights and various shapes, and has simple structure and good practicability.
In this embodiment, a microcontroller with a signal MPC89E58AF is used. A Gao Lishi magnetizer is adopted, and the model of the magnetizer is a ferrite magnetizer with cls1540 CT. The robot hand employs a palletizing robot model iRB 1410. The illumination intensity tester adopts an illuminometer with the model of LX1102 or a sigma AS803 high-precision illuminometer brightness detector. The light source adopts an LED light source. The memory is a memory with the brand of CYPRESS laplace and the model of FM16W 08-SGTR.
A measurement control method suitable for a permanent magnetization detection device of a magnet comprises the following steps:
fixedly placing the measured magnet 22 on a horizontal table below the vertical pipe, and arranging the same magnetic poles of the reference magnet and the measured magnet to be opposite; the reference magnet is repelled by the upward magnetic force of the measured magnet and can be suspended in the vertical tube; the height of the reference magnet suspended in the vertical tube is related to the magnitude of the repulsive magnetic force of the measured magnet upwards; the higher the reference magnet is suspended in the vertical tube, the larger the repulsive magnetic force of the reference magnet on the tested magnet is, and the lower the reference magnet is suspended in the vertical tube, the smaller the repulsive magnetic force of the reference magnet on the tested magnet is;
under the condition that the light emitted by the light emitting mechanism is constant, the suspension height of the reference magnet in the vertical tube can be obtained by the intensity of illumination received by the light receiving mechanism by the light 15 emitted by the light emitting mechanism and not shielded by the reference magnet;
therefore, the magnetic intensity of the detected magnet can be measured according to the intensity of illumination received by the light receiving mechanism, if the magnetic intensity of the detected magnet is high, the intensity of illumination received by the light receiving mechanism is high, and if the magnetic intensity of the detected magnet is low, the intensity of illumination received by the light receiving mechanism is low;
storing a plurality of illumination intensity values in a memory in advance, and simultaneously storing magnetic intensity values corresponding to the illumination intensity values in the memory;
when the magnetic force intensity of the measured magnetic body is measured, the magnetic force intensity value of the measured magnetic body can be obtained only by detecting the illumination intensity value of the measured magnetic body during measurement.
When the magnetic force intensity of the detected magnetic body is measured, the optical signal is not easy to be interfered by the magnetic field, so that the magnetic field of the detected magnetic body has small interference on magnetic force detection equipment, the measuring speed is high, the measuring is easy, the structure is simple, and the reliability is high.
The embodiments of the present invention have been described above with reference to the accompanying drawings, but the embodiments are not limited to the above examples, and various changes or modifications may be made by one of ordinary skill in the art within the scope of the appended claims.
Claims (4)
1. The permanent magnetization detection device of the magnet is characterized by comprising a microcontroller, a memory, a data processing module and a horizontal table, wherein a vertical pipe is arranged right above the horizontal table, and the pipe center line of the vertical pipe is perpendicular to the upper surface of the horizontal table; a left light shield and a right light shield are respectively and hermetically connected to the outer surface of the left side wall and the outer surface of the right side wall of the vertical pipe, a left side wall hole and a right side wall hole which are horizontally and oppositely arranged are respectively arranged on the left side wall and the right side wall of the vertical pipe, and the left side wall hole and the right side wall hole are respectively surrounded by a cover opening of the left light shield and a cover opening of the right light shield; a light emitting mechanism which horizontally emits light into parallel light is arranged in the left light shield, and a light receiving mechanism is arranged in the right light shield; an upper shading cloth and a lower shading cloth are respectively arranged at the upper pipe orifice and the lower pipe orifice of the vertical pipe, and a reference magnet is movably arranged in the vertical pipe between the upper shading cloth and the lower shading cloth; the memory, the data processing module, the light emitting mechanism and the light receiving mechanism are respectively connected with the microcontroller;
the measured magnet is placed on a horizontal table;
a support is arranged on the horizontal platform, a first cylinder with a telescopic rod vertically extending and contracting is arranged on the support, and the vertical pipe is fixedly connected to the telescopic rod of the first cylinder through a connecting rod; the bracket is also provided with a measured object height measuring mechanism; the control end of the measured object height measuring mechanism and the control end of the first cylinder are respectively connected with the microcontroller;
the measured object height measuring mechanism comprises a first motor, a horizontal rotating rod, a vertical rotating rod, a scribing plate, a first spring, a tension sensor and a fixing frame, wherein the rotating shaft of the first motor horizontally rotates; the first motor is fixed on the bracket, the left end of the horizontal rotating rod is fixedly connected to the rotating shaft of the first motor, the fixing frame is fixed on the horizontal rotating rod, and the tension sensor is fixed on the fixing frame; the vertical rotating rod is rotationally connected to the right end of the horizontal rotating rod, the scribing plate is connected to the lower end of the vertical rotating rod, and the scribing plate is arranged on the tested magnetic body; the upper end of the first spring is fixed at the upper end of the vertical rotating rod, and the lower end of the first spring is fixed on a drag hook of the tension sensor; the control end of the first motor and the tension sensor are respectively connected with the microcontroller.
2. The method for controlling the measurement of a permanent magnet magnetization detection device according to claim 1, wherein a clamping device having a control end connected to the microcontroller is further provided on the horizontal stage.
3. The method for measuring and controlling the permanent magnetization detection device according to claim 2, wherein the clamping device comprises four horizontal cylinders uniformly distributed on the edge of the circular detection area on the horizontal table, and the control end of each horizontal cylinder is respectively connected with the microcontroller.
4. A measurement control method suitable for use in the permanent magnet magnetization detection device according to claim 1, wherein the measurement control method is as follows:
the measured object height measuring mechanism is convenient for detecting the height of the measured magnet, so that the height of the lower pipe orifice of the vertical pipe from the upper surface of the measured magnet is controlled by means of a first cylinder;
fixedly placing the tested magnet on a horizontal table below the vertical pipe, and arranging the same magnetic poles of the reference magnet and the tested magnet in a way of opposite; the reference magnet is repelled by the upward magnetic force of the measured magnet and can be suspended in the vertical tube; the height of the reference magnet suspended in the vertical tube is related to the magnitude of the repulsive magnetic force of the measured magnet upwards; the higher the reference magnet is suspended in the vertical tube, the larger the repulsive magnetic force of the reference magnet on the tested magnet is, and the lower the reference magnet is suspended in the vertical tube, the smaller the repulsive magnetic force of the reference magnet on the tested magnet is;
under the condition that the light emitted by the light emitting mechanism is constant, the suspension height of the reference magnet in the vertical tube can be obtained by the intensity of the light signal received by the light receiving mechanism by the light emitted by the light emitting mechanism and not shielded by the reference magnet;
therefore, the magnetic force intensity of the detected magnet can be measured according to the intensity of the optical signal received by the optical receiving mechanism, if the magnetic force intensity of the detected magnet is high, the intensity of the optical signal received by the optical receiving mechanism is high, and if the magnetic force intensity of the detected magnet is low, the intensity of the optical signal received by the optical receiving mechanism is low;
storing a plurality of optical signal intensity values in a memory in advance, and simultaneously storing magnetic force intensity values corresponding to the optical signal intensity values in the memory one by one;
when the magnetic force intensity of the measured magnetic body is measured, the magnetic force intensity value of the measured magnetic body can be obtained only by detecting the optical signal intensity value of the measured magnetic body during measurement.
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