Electromagnet rotation angle parameter testing device and method

Abstract

According to the electromagnet rotation angle parameter testing device and method provided by the invention, according to the working principle of optical reflection imaging in an original testing mode of a product, an automatic mode is upgraded and replaced on the basis of the original testing principle through combination of optical reflection imaging and a visual identification technology, and one-key automatic testing of the product is innovatively realized; according to the test system, a plurality of manually operated independent test items are fused and designed into a whole set of continuous integrated automatic test through automatic modes of a programmable power supply, an electronic load and the like, one-key automatic test of products is realized, a test report is formed through automatic acquisition and summarization, manual operation intervention is greatly reduced, and the test efficiency is improved. The labor intensity and the operation complexity and complexity are reduced, the operation convenience is obviously improved, and errors caused by manual operation are avoided.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of electromagnet testing, in particular to an electromagnet angle parameter testing device and method. BACKGROUND

[0002] The electromagnet is composed of a rotor, electromagnet poles and other components. After a corresponding current is input by a power supply, a magnetic field is generated inside the electromagnet. Under the action of the magnetic field force, the angle will be deflected. The angle and other indicators of the rotor in response to the deflection of the current need to be collected.

[0003] The test bench used for electromagnet testing is mainly composed of a light source auxiliary device, a voltmeter, an ammeter, a mounting seat, a scale and other scattered parts and instruments. During testing, the electromagnet is mounted on the mounting seat, the light source auxiliary device is installed, the power supply is connected to electrify the electromagnet, the voltage and current values input to the electromagnet are displayed through the voltmeter and ammeter, the electromagnet drives the light source auxiliary device to rotate, so that the light source reflects and displays the corresponding scale on the scale. The tester visually observes and reads the scale of the area illuminated by the light source on the scale. The scale on the scale is converted into the corresponding angle to obtain the angle of the electromagnet under the input current value. After determining that the technical requirements are met, the data is manually recorded on the record sheet. The manual visual observation of the scale disc for electromagnet angle deflection testing also requires angle conversion, and the estimation and conversion results of different operators have large errors.

[0004] The scale value reflected by the light source on the scale is observed by manual observation, and the angle is converted. After the test is completed and the converted angle result is qualified, the final qualified result is copied on the record sheet. The test method has the following disadvantages:

[0005] 1. Manual testing operation steps are complicated and complex: Since the ammeter and voltmeter on the original test bench need to be manually adjusted and switched to adjust the voltage, current value, current direction and other parameters, electromagnet testing requires at least 30 operations, all of which are manual operations, which is labor-intensive and difficult to operate. At the same time, the test data needs to be recorded manually, which is a large amount of work;

[0006] 2. Poor data recognition accuracy and low test precision: the light source illuminates a part of the scale, and the scale display accuracy is poor; manual observation of the scale causes poor data recognition accuracy due to human visual error, and only one decimal place can be estimated, resulting in low test precision;

[0007] 3. Low test efficiency: during testing, the operator needs to repeatedly adjust the values of the voltmeter and ammeter according to the current direction and size requirements, manually observe the scale value, record the data on the draft paper, and then record the test results on the record sheet after determining that the test results are qualified. At the same time, in order to allow the electromagnet rotor to rotate and stabilize on the scale, sufficient observation time is reserved for the operator, which leads to longer test time, repeated and tedious operation, and ultimately low test efficiency.

[0008] 4. Data needs to be manually converted and interpreted, and there are data conversion error risks: since the recorded data is large, the scale value needs to be manually converted to angle to determine whether the data is qualified, which is tedious and prone to errors during data conversion.

[0009] 5. The test method relies heavily on manual operation, and the degree of digitization and automation is low: all operations in the test process are basically manual, and the pointer display and switch adjustment method of the voltmeter and ammeter used are relatively primitive and old. In addition, it is difficult to check the test data, and the traceability is poor.

[0010] Therefore, there is an urgent need for an electromagnet rotation angle parameter testing device and method. SUMMARY

[0011] The present application provides an electromagnet rotation angle parameter testing device and method, which solves the problems of complex and tedious operation steps, low test precision, poor test data accuracy, and low test efficiency in the original manual operation and interpretation electromagnet test method, and improves the efficiency and intrinsic quality of product production. The specific technical solutions are as follows:

[0012] An electromagnet rotation angle parameter testing device, the device comprises: a plane mirror, a force arm rod, a weight force sensor module, a laser, a reflective screen, and a camera.

[0013] The force arm rod is arranged on the rotor of the electromagnet, the plane mirror is arranged in the middle of the force arm rod, the weight force sensor module is arranged at both ends of the force arm rod, the laser is arranged in a space outside the plane mirror, the laser emits a laser light source to the plane mirror and reflects to the reflective screen, the reflective screen is provided with a scale, and the camera acquires the light spot and the scale on the reflective screen to determine the rotation angle parameter of the electromagnet rotor.

[0014] In another embodiment of the present application, the weight force sensor module is a weight, which simulates the load received by the electromagnet by adjusting the weight.

[0015] In another embodiment of the present application, the weight force sensor module is a force sensor, which simulates the load received by the electromagnet by applying a predetermined external force to the force arm rod.

[0016] In another embodiment of the present application, the device further comprises a voltmeter, an ammeter, and a power supply.

[0017] The power supply provides power for the electromagnet, the voltmeter is used for measuring the voltage of the electromagnet, the ammeter is used for measuring the current of the electromagnet, and the theoretical position of the rotor of the electromagnet is determined based on the voltage and the current.

[0018] In another embodiment of the application, the device further comprises a display device; the display device is a computer display, and the computer display is used for feeding back the detection result.

[0019] The application further provides an electromagnet rotation angle parameter testing method, and the method comprises the following steps:

[0020] The electromagnet product is installed on the feeding mechanism, fixed by screws and connected with a circuit;

[0021] Information such as the product number is input, a test item is selected, and the electromagnet starts to test the rotation angle parameter and the 3° angle torque of the electromagnet according to the set program;

[0022] The laser emits laser to the plane mirror and to the light-reflecting screen; the camera photographs the light-reflecting screen to obtain the position of the laser reflection point and the scale data;

[0023] Based on the scale data and the position of the light-reflecting point, the actual angle data of the rotor of the electromagnet is determined;

[0024] A preset load is applied to both ends of the force arm rod, the angle of the rotor of the electromagnet is detected again, and the load angle data is obtained;

[0025] Based on the actual angle data and the load angle data, a test report is generated and output.

[0026] Further, the method further comprises: removing the product after power-off and replacing the next product for automatic testing.

[0027] Further, the laser emits laser to the plane mirror and to the light-reflecting screen; the camera photographs the light-reflecting screen to obtain the position of the laser reflection point and the scale data; comprising:

[0028] Based on the product number and the test item, test parameters are generated, and the test parameters comprise: the input current and the input voltage of the electromagnet, the external force applied to the left end of the force arm rod and the external force applied to the right end of the force arm rod;

[0029] Based on the test parameters, the input voltage and the input current of the electromagnet are input, the rotor of the electromagnet rotates; the laser irradiates laser to the plane mirror, and the position of the laser reflection point before and after the rotation of the electromagnet is recorded by the camera.

[0030] Further, the position of the laser reflection point before and after the rotation of the electromagnet recorded by the camera further comprises:

[0031] Determine the current angle of the rotor of the electromagnet based on the current position of the laser reflection point after rotation of the electromagnet;

[0032] Determine the angle of the rotor of the electromagnet before rotation based on the position of the laser reflection point before rotation of the electromagnet;

[0033] Determine the rotation angle of the rotor of the electromagnet based on the current angle and the angle before rotation of the rotor.

[0034] Further, the position of the laser reflection point before and after rotation of the electromagnet is recorded by the camera, comprising:

[0035] Obtain the position image of the laser reflection point within a period of time, and determine the position information of the laser reflection point frame by frame;

[0036] Based on the position information of the laser point frame by frame within a period of time, determine the center point of all position information, and the center point is the accurate position information.

[0037] The beneficial effects of the present application are as follows:

[0038] The present application provides a kind of electromagnet rotation parameter testing device and method, according to the working principle of optical reflection imaging in product original test mode, by optical reflection imaging combines the technology of visual identification, on the basis of original test principle, carry out the upgrade replacement of automation mode, innovatively realize the one-key automatic test of product;Test system will be fused into a whole set of continuous integrated automatic test by the automatic mode such as process control power supply+electronic load to multiple manual operation independent test items, realize the one-key automatic test of product, and automatically collect and summarize to form test report, greatly reduce manual operation intervention, reduce labor intensity and operation complexity, complexity, while significantly improve the convenience of operation, avoid the error caused by manual operation. BRIEF DESCRIPTION OF DRAWINGS

[0039] Figure 1 It is electromagnet internal rotor and electromagnet level schematic diagram;

[0040] Figure 2 It is the overall appearance of the structure of the rotation angle test system device;

[0041] Figure 3 It is the automatic test principle of the rotation angle test system device; DETAILED DESCRIPTION

[0042] To make the objectives, technical solutions, and advantages of this specification clearer, the technical solutions of this application will be clearly and completely described below in conjunction with specific embodiments and corresponding drawings. Obviously, the described embodiments are only a part of the embodiments in this specification, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments in this application without creative effort are within the scope of protection of this document.

[0043] like Figure 1 As shown, an electromagnet consists of components such as a rotor and electromagnet poles. When a corresponding current is input, it generates a magnetic field internally. Under the influence of this magnetic force, the electromagnet deflects. It is necessary to collect indicators such as the angle of deflection of the rotor in response to the current. The test bench used for electromagnet testing mainly consists of a light source auxiliary device, voltmeter, ammeter, mounting base, and scale, among other scattered parts and instruments. During testing, the electromagnet is mounted on the mounting base, the light source auxiliary device is attached, and the power is turned on to energize the electromagnet. The voltmeter and ammeter display the voltage and current values ​​input to the electromagnet. The electromagnet drives the light source auxiliary device to rotate, causing the reflected light to appear on the corresponding scale. The tester visually observes and reads the scale readings of the area illuminated by the light source. By converting the number of divisions on the scale into the corresponding angle, the angle of rotation of the electromagnet at that input current value can be obtained. After determining that the technical requirements are met, the data is manually recorded on a record sheet. Using manual visual observation of the scale for electromagnet angle deflection testing requires angle conversion, and different operators may have significant errors in their estimation and conversion results.

[0044] The method of manually observing the reflection of the light source on a ruler and converting the angle, and then recording the final result on a record sheet after the test is completed and the converted angle is qualified, has the following disadvantages:

[0045] Manual testing procedures are tedious and complex: because the ammeters and voltmeters on the original test bench need to be manually adjusted and switched to regulate the voltage, current value, and current direction, the electromagnet test requires at least 30 operations, all of which are manual, resulting in high labor intensity and high operational difficulty; at the same time, the test data needs to be recorded manually, which is a large workload.

[0046] The data recognition accuracy is poor and the test precision is low: the light source illuminates only a portion of the scale, resulting in poor scale display accuracy; the manual observation of the scale leads to poor data recognition accuracy due to human visual error, and only one decimal place can be estimated, resulting in low test precision.

[0047] Low test efficiency: During testing, the operator needs to repeatedly adjust the values of the voltmeter and ammeter according to the current direction and size requirements, manually observe the scale values, record the data on the draft paper, and then record the test results on the record sheet after determining that the test results are qualified. At the same time, in order to allow the electromagnet rotor to rotate and stabilize on the scale, sufficient observation time is reserved for the operator, resulting in longer test time, repeated and tedious operation, and ultimately low test efficiency.

[0048] Data needs to be manually converted and interpreted, and there is a risk of data conversion error: Since the recorded data is large, the scale value also needs to be manually converted to angle to determine whether the data is qualified, which is tedious and prone to errors during data conversion.

[0049] The test method relies heavily on manual operation, and the degree of digitization and automation is low: The operations during the test process are basically manual, and the pointer display and switch adjustment method of the voltmeter and ammeter used are relatively primitive and old. In addition, it is difficult to access the test data, and the traceability is poor.

[0050] As shown in Figure 2 , wherein the loading detection mechanism is used to install and fix the product, receive signals, and control the product action; the laser transceiver unit is used to emit infrared laser to provide the light curtain imaging source; the vision system is used to position and collect the reflected light point coordinates and feedback to the system software for angle conversion; the plane mirror is used to reflect the infrared laser emitted by the laser unit to the light curtain; the reflective light curtain is the actual part of the infrared laser imaging; the PLC touch screen is used to operate and control the related parameters of the equipment; and the computer display is used to operate the software, fill in the product number and other information, display the test process, and save the test report, etc.

[0051] The test system is upgraded and modified according to the working principle of optical reflection imaging in the original test method of the product; the laser transceiver unit emits infrared laser to replace the original ordinary light source, and the plane mirror replaces the light source auxiliary device installed on the product shaft. The product is fixed on the platform center, and the light point is reflected to the reflective screen through the reflection principle, which is more accurate than the ordinary light source. The light point transverse coordinates are automatically identified by the CCD camera vision recognition instead of manual reading of the scale, and the rotation angle of the electromagnet rotor can be automatically calculated through the reflection distance and the light point transverse coordinates.

[0052] The main test process is as follows:

[0053] 1) Device initialization: turn on the device, open the software, and complete the initialization;

[0054] 2) Install the product: install the electromagnet product on the loading mechanism, fix it with nuts, and complete the wiring;

[0055] 3) Equipment start: enter product number and other information on the computer software, select the set test project, click the start button, the electromagnet starts the continuous automatic test according to the set program of the electromagnet rotation angle parameter, 3° torque and other projects;

[0056] 4) Automatic generation of test report: after the test is completed, the software automatically collects and converts the corresponding test indicators and automatically judges, and forms the required test report, and saves the report.

[0057] 5) Product unloading: after power off, the product is removed and the next product is installed for automatic test.

[0058] During the test, the electromagnet is installed on the feeding mechanism and connected electrically, the computer software inputs the relevant product information, the equipment is powered on according to the program, the laser transceiver unit emits infrared laser which is reflected to the light curtain through the plane mirror, the CCD vision system automatically collects the coordinate points and feeds back to the software to convert the corresponding angle and automatically judge the result, and the qualified products are directly saved and printed test report, the unqualified products are directly restarted after the corresponding parameter adjustment, and the test report is printed after the test result is qualified. The rotation angle parameter of the electromagnet is automatically tested.

[0059] 1. According to the working principle of optical reflection imaging in the original test method, the one-key automatic test of the product is realized by combining the optical reflection imaging with the visual recognition technology and upgrading the original test principle.

[0060] 2. The test system integrates multiple manual operation independent test projects into a complete integrated automatic test through program-controlled power supply + electronic load and other automatic methods, realizes one-key automatic test of the product, automatically collects and forms the test report, greatly reduces the manual operation intervention, reduces the labor intensity and operation complexity, and improves the operation convenience.

[0061] The electromagnet rotation angle parameter test device designed and manufactured by the application has the following advantages:

[0062] 1) The operation automation rate is improved: the steps of personnel intervention operation are greatly reduced from the original 30 manual operation steps to 4 steps, and other operation steps are realized automatically, the automation rate (manual replacement rate) is increased from 0% to 86.7%, and the labor intensity is greatly reduced.

[0063] 2) Achieve process error prevention: test data is automatically collected and calculated by the system and automatically summarized to form a test report, automatically determines whether the test is qualified, avoids the error of manual observation and identification of scale values and manual conversion of angle values and interpretation, reduces the difficulty of manual operation, realizes process error prevention, reduces the data error rate to 0, effectively guarantees the accuracy and precision of the data, and ensures the intrinsic quality of the product;

[0064] 3) Digitalization and automation degree is improved: the equipment is integrated controlled through a general control system, and is designed to be digital and visualized, and the single manual or continuous automatic control of the electromagnetic product parameter test can be realized on the PLC operation interface, and the real-time display of the test data and the qualified criterion are provided on the software operation interface, so that the convenience and operability are high;

[0065] 4) The traceability of test data is enhanced: the test data of the product can be quickly found through the product number on the computer, and the search efficiency is improved by more than 50%; the test data is recorded electronically, and the traceability of the quality record is improved. Specific embodiment 2:

[0067] The application provides an electromagnetic iron rotation angle parameter testing device and method, which solves the problems of complicated operation steps, low test precision, poor test data accuracy and low test efficiency of the original manual operation and interpretation electromagnetic iron test method, and improves the efficiency and intrinsic quality of product production. The specific technical scheme is as follows:

[0068] An electromagnetic iron rotation angle parameter testing device, the device comprises: a plane mirror, a force arm rod, a weight force sensor module, a laser, a reflective screen and a camera.

[0069] The force arm rod is arranged on the rotor of the electromagnetic iron, the plane mirror is arranged in the middle of the force arm rod, the weight force sensor module is arranged at both ends of the force arm rod, the laser is arranged in a space outside the plane mirror, the laser emits a laser light source to the plane mirror and reflects to the reflective screen, the reflective screen is provided with scales, and the camera acquires the light spot and the scales on the reflective screen to determine the rotation angle parameter of the electromagnetic iron rotor.

[0070] In another embodiment of the application, the weight force sensor module is a weight, which simulates the load received by the electromagnetic iron by adjusting the weight.

[0071] In another embodiment of the application, the weight force sensor module is a force sensor, which simulates the load received by the electromagnetic iron by applying a preset external force to the force arm rod.

[0072] In another embodiment of the application, the device further comprises a voltmeter, an ammeter and a power supply.

[0073] A power supply provides power for the electromagnet, a voltmeter is used to measure the voltage of the electromagnet, and an ammeter is used to measure the current of the electromagnet, and the rotor theoretical position of the electromagnet is determined based on the voltage and the current.

[0074] In another embodiment of the present application, the device further comprises a display device, and the display device is a computer display used to feed back the detection results.

[0075] The present application also provides an electromagnet rotation angle parameter testing method, which comprises the following steps:

[0076] The electromagnet product is installed on the feeding mechanism, fixed by screws and connected with the circuit;

[0077] The product number and other information are input, the test item is selected, and the electromagnet starts to test the electromagnet rotation angle parameter and 3° angle torque according to the set program;

[0078] The laser emits laser to the plane mirror and to the reflecting screen, and the camera photographs the reflecting screen to obtain the position of the laser reflection point and the scale data;

[0079] Based on the scale data and the position of the reflection point, the actual angle data of the electromagnet rotor is determined;

[0080] The preset load is applied to both ends of the force arm rod, the angle of the electromagnet rotor is re-detected, and the load angle data is obtained;

[0081] Based on the actual angle data and the load angle data, a test report is generated and output.

[0082] Further, the method further comprises removing the product after power-off and replacing the next product for automatic testing.

[0083] Further, the laser emits laser to the plane mirror and to the reflecting screen, and the camera photographs the reflecting screen to obtain the position of the laser reflection point and the scale data; comprising:

[0084] Based on the product number and the test item, test parameters are generated, and the test parameters include the input current and voltage of the electromagnet, the external force applied to the left end of the force arm rod, and the external force applied to the right end of the force arm rod;

[0085] Based on the test parameters, the voltage and current of the electromagnet are input, the rotor of the electromagnet rotates, the laser irradiates laser to the plane mirror, and the position of the laser reflection point before and after the rotation of the electromagnet is recorded by the camera.

[0086] Further, the recording of the position of the laser reflection point before and after the rotation of the electromagnet by the camera further comprises:

[0087] determine the current angle of the rotor of the electromagnet based on the current position of the laser reflection point after the electromagnet rotates;

[0088] determine the angle of the rotor of the electromagnet before the electromagnet rotates based on the position of the laser reflection point before the electromagnet rotates;

[0089] determine the rotation angle of the rotor of the electromagnet based on the current angle and the angle before the rotor of the electromagnet rotates.

[0090] Further, the recording of the position of the laser reflection point before and after the electromagnet rotates through the camera comprises:

[0091] acquire a position image of the laser reflection point within a period of time, and determine the position information of the laser reflection point frame by frame;

[0092] determine the center point of all position information based on the position information of the laser point frame by frame within a period of time, and the center point is the accurate position information.

[0093] Example embodiments have been disclosed herein and, although the use of specific terms is expressly used herein, they are intended in the sense only of general descriptive purpose and should not be construed as limiting. In some embodiments, it will be apparent to those skilled in the art from this disclosure that the features, aspects, and / or elements described in connection with a particular embodiment can be used alone or in combination with other embodiments, unless expressly indicated otherwise. Thus, it will be understood by those skilled in the art that various changes in form and details can be made therein without departing from the scope of the present disclosure as set forth in the appended claims.

Claims

1. A device for testing the rotation angle parameters of an electromagnet, characterized in that, The device includes: a plane mirror, a lever arm, a weight force sensor module, a laser, a reflective screen, and a camera; A lever arm is mounted on the rotor of the electromagnet. A plane mirror is positioned in the middle of the lever arm. Weight force sensor modules are positioned at both ends of the lever arm. A laser is positioned in the space outside the plane mirror. The laser emits a laser light source towards the plane mirror, which reflects the light onto a reflective screen. The reflective screen is marked with a scale. A camera captures the light spot and the scale on the reflective screen to determine the rotation angle parameters of the electromagnet rotor.

2. The electromagnet rotation parameter testing device as described in claim 1, characterized in that, The weight force sensor module is a weight, and the load on the electromagnet is simulated by adjusting the weight.

3. The electromagnet rotation parameter testing device as described in claim 1, characterized in that, The weight force sensor module is a force sensor that simulates the load on an electromagnet by applying a preset external force to the lever arm.

4. The electromagnet rotation parameter testing device as described in claim 1, characterized in that, The device also includes: a voltmeter, an ammeter, and a power supply; The power source provides power to the electromagnet, the voltmeter is used to measure the voltage of the electromagnet, and the ammeter is used to measure the current of the electromagnet. The theoretical position of the electromagnet's rotor is determined based on the voltage and current.

5. The electromagnet rotation parameter testing device as described in claim 1, characterized in that, The device further includes: a display device; the display device is a computer monitor, which is used to provide feedback on the detection results.

6. A method for testing the rotational parameters of an electromagnet, characterized in that, The method is used in the electromagnet rotation parameter testing device according to claim 1, and the method includes: Install the electromagnet product on the feeding mechanism, fix it with screws and complete the circuit connection; Enter the product number and other information, select the test items, and the electromagnet will start testing the electromagnet's rotation angle parameters and 3° angular torque according to the set program; The laser emits a laser beam towards the plane mirror and onto the reflective screen; the camera captures the reflective screen to obtain the position of the laser reflection point and scale data; Based on the scale data and the position of the reflective point, determine the actual angle data of the electromagnet rotor; Apply a preset load to both ends of the lever arm, re-detect the angle of the electromagnet rotor, and obtain the load angle data; Test reports are generated based on actual angle data and load angle data, and the output reports are saved.

7. The method for testing the rotation parameters of an electromagnet as described in claim 6, characterized in that, The method also includes: removing the product after power failure, replacing it with the next product, and conducting automated testing.

8. The method for testing the rotation parameters of an electromagnet as described in claim 6, characterized in that, The laser emits a laser beam toward the plane mirror and onto the reflective screen; The camera captures images of the reflective screen, obtaining the location of the laser reflection point and scale data; including: Test parameters are generated based on the product number and test items. The test parameters include: input current of the electromagnet, input voltage, external force applied to the left end of the lever arm, and external force applied to the right end of the lever arm. Voltage and current are input to the electromagnet based on test parameters, causing the electromagnet's rotor to rotate; a laser is used to illuminate a plane mirror, and a camera records the position of the laser reflection point before and after the electromagnet rotates.

9. The method for testing the rotation parameters of an electromagnet as described in claim 8, characterized in that, The method of recording the position of the laser reflection point before and after the electromagnet rotates via camera also includes: The current angle of the electromagnet's rotor is determined based on the current position of the laser reflection point after the electromagnet rotates. Based on the position of the laser reflection point before the electromagnet rotates, the angle of the rotor before the electromagnet rotates is determined. The rotor rotation angle of the electromagnet is determined based on the current angle and the angle before the rotor rotates.

10. The method for testing the rotation parameters of an electromagnet as described in claim 8, characterized in that, The method of recording the position of the laser reflection point before and after the electromagnet rotates by a camera includes: Acquire images of the laser reflection points over a period of time, and determine the position information of the laser reflection points frame by frame; Based on the position information of laser points frame by frame over a period of time, the center point of all position information is determined, and the center point is the accurate position information.

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