CN212883599U - Magnetic flux measuring device - Google Patents
Magnetic flux measuring device Download PDFInfo
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- CN212883599U CN212883599U CN202020748623.8U CN202020748623U CN212883599U CN 212883599 U CN212883599 U CN 212883599U CN 202020748623 U CN202020748623 U CN 202020748623U CN 212883599 U CN212883599 U CN 212883599U
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Abstract
The utility model provides a magnetic flux measuring device, which comprises a frame; the detection station is arranged on the frame and used for placing a product to be detected; the detection probes are used for detecting the magnetic flux of a product to be detected and comprise a plurality of detection probes, and the detection probes are electrically connected with the control processing system; the sliding assembly comprises a sliding block, a sliding rail and a connecting piece, the connecting piece is slidably arranged on two sides of the rack, the sliding rail is arranged on the connecting piece, the sliding block is arranged on the sliding rail, and the detection probe is arranged on the sliding block; the driving device is used for driving the sliding assembly to slide; and the display device comprises a touch display screen and keys, and is electrically connected with the control processing system. The utility model discloses a but test probe simultaneous measurement a plurality of products that await measuring, control processing system handles the data of feedback and exports the result, makes detection efficiency higher, reduces the erroneous judgement rate.
Description
Technical Field
The utility model belongs to magnetic flux detection area especially relates to a magnetic flux measuring device.
Background
A fluxmeter is a magnetic measuring instrument that measures magnetic flux. The method is used for measuring the space magnetic field and researching the magnetism of the material. The conventional magnetometers include three types, namely magnetoelectric type, electronic type and digital integral type, and the magnetometers are magnetic field measuring instruments which determine magnetic flux according to the degree of change when the magnetic flux in an induction element is measured.
The existing magnetic flux detection equipment can only measure one product at one time generally, can only reflect the size and polarity of magnetic flux when a magnetic flux induction element measures the magnetic flux, cannot judge whether the magnetic flux value of the product is qualified or not, needs manual judgment, is easy to cause misjudgment, and has low measurement efficiency and high labor intensity.
SUMMERY OF THE UTILITY MODEL
The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, the utility model provides a magnetic flow measuring device, this magnetic flow measuring device can improve measurement of efficiency and improve the detection accuracy.
The magnetic flux measuring device according to the embodiment of the utility model comprises a frame; the detection stations comprise two detection stations which are respectively arranged on the rack, and each detection station is used for placing a plurality of products to be detected; the detection probes are used for detecting the magnetic flux of the product to be detected and comprise a plurality of detection probes, and the detection probes are electrically connected with the control processing system; the sliding assembly comprises a sliding block, a sliding rail and connecting pieces, the two connecting pieces are slidably mounted on two sides of the rack, two ends of the sliding rail are respectively mounted on the two connecting pieces, the sliding block is slidably mounted on the sliding rail, and the detection probe is vertically slidably mounted on the sliding block; the driving device is used for driving the sliding assembly to slide; the display device comprises a touch display screen and a plurality of keys, and is electrically connected with the control processing system.
According to the utility model discloses magnetic flux measuring device has following beneficial effect at least: the utility model discloses a detecting probe includes a plurality of, be used for detecting the magnetic flux of the product to be detected, and upper and lower slidable mounting is on the slider (namely detecting probe can move along Z axle direction), slider slidable mounting is on the slide rail (namely detecting probe can move along Y axle direction), the both ends of slide rail are installed on the connecting piece, the connecting piece slidable mounting is in frame both sides (namely detecting probe can move along X axle direction), detecting probe can adjust the relative position with the product to be detected along three directions, it is more flexible to adjust, and a plurality of detecting probes can detect different products to be detected respectively, after detecting, feed back data to the control processing system, after detecting, the control processing system processes data, the result is exported, can screen the product according to the result that the control processing system exported, make detection efficiency higher, and reduce the erroneous judgement rate, and the utility model discloses be provided with two detection station, can place the product that awaits measuring of a plurality of on every detection station, when the magnetic flux of each product that awaits measuring on one of them detection station of test probe detection, supply new product that awaits measuring on another one detection station, need not to wait for all products that await measuring to detect and supply again after having, can further improve detection efficiency.
According to some embodiments of the present invention, the control processing system comprises an editable logic controller, the editable logic controller being electrically connected to the display device and the detection probe, respectively.
According to some embodiments of the present invention, the editable logic controller comprises a multi-channel a/D conversion module, the multi-channel a/D conversion module being electrically connected to the detection probe. The scheme adopts the multi-channel A/D conversion module, is electrically connected with each detection probe, can realize the simultaneous detection of a plurality of products, and outputs results to the display device after being processed by other modules in the editable logic controller.
According to some embodiments of the utility model, the test probe is hall test probe.
According to some embodiments of the invention, the number of detection probes is 6.
According to some embodiments of the invention, the keys comprise a switch key, a stop key, a reset key, a register key, a single step/continuous key and a run key. According to the scheme, various keys are arranged, so that mode switching and related functions can be realized.
According to the utility model discloses a few embodiments, first spout, two have been seted up to the bottom surface both sides of frame connecting piece slidable mounting in on the first spout.
According to some embodiments of the utility model, drive arrangement includes respectively with first drive arrangement, second drive arrangement and the third drive arrangement that control processing system electricity is connected, first drive arrangement is used for the drive detect probe is followed the slider slides, second drive arrangement is used for driving the slider and follows the slide rail slides, the third drive arrangement is used for the drive the connecting piece is followed the frame slides.
According to some embodiments of the invention, the first drive arrangement, the second drive arrangement and the third drive arrangement are motors.
According to some embodiments of the utility model, be provided with screw-nut mechanism on the slider, screw-nut mechanism with a drive arrangement links to each other, test probe with screw-nut mechanism links to each other.
According to some embodiments of the invention, the display device is mounted in one side of the frame. This scheme is through installing display device in one side of frame, can learn the testing result of the product that awaits measuring through display device after detecting, directly screens the product.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 is a schematic structural diagram of a magnetic flux measuring device according to an embodiment of the present invention.
Fig. 2 is a schematic structural diagram of the sliding assembly and the detection probe according to the embodiment of the present invention.
Fig. 3 is a control schematic diagram of a control processing system according to an embodiment of the present invention.
Fig. 4 is a schematic structural diagram of a display device according to an embodiment of the present invention.
Fig. 5 is a flowchart of magnetic flux measurement according to an embodiment of the present invention.
Reference numerals:
the device comprises a magnetic flux measuring device 100, a product to be detected 10a, a rack 110, a detection station 120, a detection probe 130, a sliding assembly 140, a slider 141, a slide rail 142, a connecting piece 143, a bracket 144, a driving device 150, a first driving device 151, a second driving device 152, a third driving device 153, a display device 160, a touch display screen 161, a key 162, a switch key 1621, a stop key 1622, a reset key 1623, an alignment key 1624, a single-step/continuous key 1625, an operation key 1626, a control processing system 170, an editable logic controller 171 and a multi-channel A/D conversion module 1711.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.
In the description of the present invention, it should be understood that the orientation or positional relationship referred to in the description of the orientation, such as the upper, lower, front, rear, outer, inner, etc., is the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, a plurality of means are one or more, a plurality of means are two or more, and the terms greater than, less than, exceeding, etc. are understood as not including the number, and the terms greater than, less than, within, etc. are understood as including the number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.
In the description of the present invention, unless there is an explicit limitation, the words such as setting, installation, connection, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in combination with the specific contents of the technical solution.
In order to clearly understand the technical features, objects and effects of the present invention, the detailed description of the embodiments of the present invention will be made with reference to the accompanying drawings.
A magnetic flux measuring apparatus 100 according to an embodiment of the present invention is described below with reference to fig. 1 to 3.
As shown in fig. 1 to 3, a magnetic flux measuring apparatus 100 according to an embodiment of the present invention includes a frame 110, a detection station 120, a detection probe 130, a sliding assembly 140, a driving device 150, and a display device 160.
The detection stations 120 are respectively installed on the rack 110, each detection station 120 is used for placing a plurality of products to be detected 10a, the detection probe 130 is used for detecting the magnetic flux of the products to be detected 10a, the detection probe 130 comprises a plurality of probes, the detection probe 130 is electrically connected with the control processing system 170, the sliding assembly 140 comprises a sliding block 141, a sliding rail 142 and connecting pieces 143, the two connecting pieces 143 are slidably installed on two sides of the rack 110, two ends of the sliding rail 142 are respectively installed on the two connecting pieces 143, the sliding block 141 is slidably installed on the sliding rail 142, the detection probe 130 is slidably installed on the sliding block 141 up and down, the driving device 150 is used for driving the sliding assembly 140 to slide, the display device 160 comprises a touch display screen 161 and a plurality of keys 162, and the display device 160 is electrically.
The existing magnetic flux measuring device can only reflect the size and the type of magnetic flux generally, does not have a data discrimination function, and can only judge whether a product is qualified or not according to experience of an operator in the detection process, so that misjudgment is easily caused. In this embodiment, the related parameters of the product can be input in advance through the touch display screen 161 of the display device 160, the related parameters of the product are stored in the control processing system 170, meanwhile, the touch display screen 161 can display the data and the comparison result output after the processing of the control processing system 170, a plurality of products to be detected 10a are placed on the detection station 120, the detection probe 130 can move along three directions of the X axis, the Y axis and the Z axis under the action of the sliding assembly 140, the relative position between the detection probe 130 and the products to be detected 10a is adjusted, after the adjustment is completed, the magnetic flux of the products to be detected 10a is detected through the detection probe 130, after the detection is completed, the data is transmitted back to the control processing system 170, the control processing system 170 compares the preset product parameters with the data transmitted back by the detection probe 130, determines whether the magnetic flux of the products is qualified, and transmits the detection data and the comparison result to the display device 160, the operator can directly screen and sort the products according to the result displayed by the display device 160. The control processing system 170 stores related parameters of different types of products 10a to be tested, corresponding parameters can be switched according to the tested products through the touch display screen 161, and the control processing system 170 compares the corresponding product parameters with data fed back by the testing probe 130 and outputs results. The touch display screen 161 can display data and comparison results output after the control processing system 170 finishes processing, and an operator can visually judge whether a product is qualified according to the results displayed by the touch display screen 161, without judging according to experience, and can reduce the misjudgment rate of product detection results.
According to the utility model discloses magnetic flux measuring device 100 carries out the magnetic flux to the product 10a that awaits measuring simultaneously through a plurality of test probe 130 and detects and with the data feedback that records to control processing system 170 in, control processing system 170 can handle and compare data, shows the comparison result on display device 160, can filter unqualified product through the result that display device 160 shows directly perceivedly. The judgment is not needed according to experience, and the misjudgment rate can be greatly reduced. The inspection probe 130 is movable in three directions, and the relative positions of the inspection probe 130 and the product 10a to be inspected can be better adjusted by controlling the position of the inspection probe 130 by the control processing system 170. The magnetic flux measuring device 100 is provided with two detection stations 120, each detection station 120 can be placed with a plurality of products 10a to be detected, when the detection probe 130 detects the magnetic flux of each product 10a to be detected on one detection station 120, a new product 10a to be detected is supplemented on the other detection station 120, and the products 10a to be detected do not need to be supplemented after the detection of all the products 10a to be detected is finished, so that the detection efficiency can be further improved.
Referring to fig. 1 and 3, in some embodiments of the present invention, the control processing system 170 includes an editable logic controller 171 (i.e., PLC), and the editable logic controller 171 is electrically connected to the display device 160 and the detection probe 130 respectively. The touch display screen 161 can input relevant parameters of various products of different types, the relevant parameters are stored in the editable logic controller 171 after input is finished, during measurement, the parameters corresponding to the product 10a to be measured are switched to through the touch display screen 161, the detection probe 130 is opposite to the product 10a to be measured, the magnetic flux of the product 10a to be measured is measured, after measurement, data are fed back to the editable logic controller 171, the editable logic controller 171 analyzes and compares the received data, the compared result and the received data are transmitted to the touch display screen 161, the touch display screen 161 can visually display the data detected by the detection probe 130 and the compared result of the editable logic controller 171, an operator can directly screen unqualified products according to the structure, and the detection efficiency can be improved.
Referring to fig. 1 and 3, in some embodiments of the present invention, the editable logic controller 171 includes a multi-channel a/D conversion module 1711, an output end of the multi-channel a/D conversion module 1711 is electrically connected to the editable logic controller 171, and an input end of the multi-channel a/D conversion module 1711 is electrically connected to the detection probe 130. Specifically, in order to enable the multiple detection probes 130 to simultaneously detect multiple products to be tested 10a, in this embodiment, the editable logic controller 171 includes a multi-channel a/D conversion module 1711, each detection probe 130 is electrically connected to the multi-channel a/D conversion module 1711, multi-channel data acquisition is implemented through the multi-channel a/D conversion module 1711, so that the detection probes 130 can simultaneously detect multiple products to be tested 10a, and the multiple data are transmitted back to the editable logic controller 171 through the multi-channel a/D conversion module 1711, the data are processed and compared through other modules of the editable logic controller 171, and the comparison result and the received data are transmitted to the touch display screen 161, the touch display screen 161 can visually display the data detected by the detection probes 130 and the comparison result of the editable logic controller 171, an operator can directly screen unqualified products according to the structure, and the detection efficiency can be improved.
Referring to fig. 1 and 2, in some embodiments of the present invention, the detecting probe 130 is a hall detecting probe. In the present embodiment, the number of the detection probes 130 is 6. Specifically, 6 detecting probes 130 are arranged on a support 144 side by side, and two sides of the support 144 are slidably mounted on the sliding block 141, so that the 6 detecting probes 130 can be lifted and lowered simultaneously, the relative positions of the detecting probes 130 and the product 10a to be detected are adjusted, and collision is avoided. In the present embodiment, the number of the detection probes 130 is 6, and it is understood that the number of the detection probes 130 can be increased or decreased according to the detection requirement or the cost.
Referring to fig. 1 and 4, in some embodiments of the present invention, the keys 162 include a switch key 1621, a stop key 1622, a reset key 1623, an align key 1624, a single step/continuous key 1625, and a run key 1626. The switch button 1621 is used to turn on or off the whole magnetic flux measuring device 100, the reset button 1623 is used to reset the detecting probe 130 to the original point, the alignment button 1624 includes a left alignment button and a right alignment button, in this embodiment, the left alignment button and the right alignment button are two independent buttons, both of which are disposed on the display device 160 and are mainly used to control the detecting probe 130 to move to switch the detected detecting station 120, the single step/continuous button 1625 is used to switch the working mode of the detecting probe 130, and the operation case 1626 and the stop button 1622 are used to correspondingly control the working state of the magnetic flux measuring device 100 when an abnormality occurs during the detection of the detecting probe 130.
Referring to fig. 1 and 2, in some embodiments of the present invention, first sliding grooves (not shown) are formed on two sides of the bottom surface of the frame 110, and the two connecting members 143 are slidably mounted on the first sliding grooves. In this embodiment, two connecting members 143 are disposed in the width direction of the rack 110, the driving device 150 drives the two connecting members 143 to have an "L" shape, one end of the connecting member 143 is slidably connected to the first sliding slot, and the other end of the connecting member 143 is connected to one end of the sliding rail 142, so that when the connecting member 143 slides along the first sliding slot, the sliding rail 142 can move along the X-axis direction, that is, the detecting probe 130 mounted on the sliding rail 142 can move along the X-axis direction; when the sliding block 141 slides along the sliding rail 142, the sliding block 141 can move along the Y-axis direction (i.e., move along the length direction of the rack 110), that is, the detecting probe 130 mounted on the sliding block 141 can move along the Y-axis direction, and the detecting probe 130 can slide up and down relative to the sliding block 141, so that the detecting probe 130 can move along the Z-axis direction, and the position of the detecting probe 130 is adjusted through three directions, so that each detecting probe 130 can be ensured to correspond to the product to be detected 10a one by one, and the detecting probe 130 can be prevented from colliding with the product to be detected 10a to cause damage.
Referring to fig. 1 and 3, in some embodiments of the present invention, the driving device 150 includes a first driving device 151, a second driving device 152, and a third driving device 153 electrically connected to the control processing system 170, respectively, the first driving device 151 is used for driving the detection probe 130 to slide along the sliding block 141, the second driving device 152 is used for driving the sliding block 141 to slide along the sliding rail 142, and the third driving device 153 is used for driving the connecting member 143 to slide along the rack 110. In the present embodiment, the first driving device 151, the second driving device 152, and the third driving device 153 are motors.
Referring to fig. 1 and 2, in some embodiments of the present invention, a lead screw and nut mechanism (not shown) is disposed on the sliding block 141, the lead screw and nut mechanism is connected to the first driving device 151, the lead screw and nut mechanism is perpendicular to the sliding rail 142, and the detecting probe 130 is mounted on the lead screw and nut mechanism. Specifically, the slider 141 is further provided with a guide post, the bracket 144 is slidably mounted on the screw-nut mechanism and the guide post, and the guide post plays a role in guiding, so that the 6 detection probes 130 can slide along the screw rod and simultaneously lift, the relative positions of the detection probes 130 and the product 10a to be detected are adjusted, the distance between the detection probes 130 and the product 10a to be detected can be adjusted, and collision is avoided.
The sliding of the detection probe 130 along three directions is realized through the first driving device 151, the second driving device 152 and the third driving device 153, and the first driving device 151, the second driving device 152 and the third driving device 153 are controlled through the control processing system 170, so that the sliding displacement of the detection probe 130 along three directions can be accurately controlled, manual adjustment is not needed, and the regulation and control are more accurate.
In this embodiment, the detection probe 130 is mainly realized to move along three directions by adopting a mode of matching a motor with a screw rod, and of course, the detection probe 130 can also be realized to move along three directions by adopting other driving devices, such as an air cylinder and the like. Since the manner of adjusting the relative position of the product 10a to be detected by the detection probe 130 moving in three directions is a common method, it is not described herein again.
A magnetic flux measuring apparatus 100 according to an embodiment of the present invention is described in detail below with reference to fig. 1 to 5 as a specific embodiment. It is to be understood that the following description is illustrative only and is not intended as a specific limitation on the invention.
As shown in fig. 1 to 5, different types of related parameters are input in advance through the touch display screen 161 and stored in the PLC, the switch button 1621 is pressed to start the magnetic flux measuring device 100, the self-test is performed after the start-up, the reset button 1623 is pressed after the self-test is completed, the detecting probe 130 is reset to the original point of the machine to wait for the test, the magnetic flux detecting device 100 is in a standby state at this time, an operator can perform corresponding function setting on the touch display screen 161 at this time, after the setting is completed, the product 10a to be tested is placed on the detecting station 120, the operation button 1626 is pressed, the control processing system 170 controls the sliding assembly 140 to slide and adjust the relative position between the detecting probe 130 and the product 10a to be tested on the detecting station 120, the detecting probe 130 transmits data to the multi-channel a/D converting module 1711 after the detection, the other modules of the editable logic controller 171 can process and compare the received data after the received data is received by the multi-channel, after the comparison, the received data and the comparison result are displayed on the touch display screen 161. If the detected data is not qualified after comparison, the magnetic flux detection device 100 sends a warning and a mark, the touch display screen 161 displays the detected data, the comparison result, the reason for the unqualified data, and the like, meanwhile, the detection probe 130 stays above the corresponding product to be detected 10a, and an operator can screen the unqualified product according to the data and the result displayed by the touch display screen 161 and the position of the detection probe 130. When the magnetic flux detection device 100 sends out the warning signal, the magnetic flux detection device 100 suspends detection and waits for the next instruction of the operator. The operator can choose to replace the detected product 10a to be detected, press the operation button 1626, after pressing, the detection probe 130 operates again to start detecting the product 10a to be detected, the operator can also choose to press the stop button 1622, and the magnetic flux detection device 100 is in the standby state again to wait for the next instruction of the operator. The single step/continuous key 1625 can switch the detection mode of the detection probe 130, when the detection probe 130 detects the product 10a to be detected on the left detection station 120 first, if the detection probe 130 is in the single step mode, after the detection probe 130 finishes detecting the product 10a to be detected on the left detection station 120 and waits for the operator to press the operation key 1626, the detection probe 130 moves to the right detection station 120 to detect the product 10a to be detected on the detection station 120; on the contrary, in the single-step mode, if the product 10a to be detected on the right detection station 120 is detected first, after the detection is finished, and after the operator presses the operation key 1626, the detection probe 130 moves to the left detection station 120, and the product 10a to be detected on the detection station 120 is detected. When in the continuous mode, the detecting probe 130 automatically moves to the detecting station 120 on the other side after the detection of the product 10a to be detected on the detecting station 120 on one side is completed, and detects the product 10a to be detected on the detecting station 120 on the other side. When the inspection probe 130 inspects the product 10a to be inspected at one of the inspection stations 120, the operator can replenish the new product 10a to be inspected at the other inspection station 120.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art.
Claims (10)
1. A magnetic flux measuring apparatus, comprising
A frame;
the detection stations comprise two detection stations which are respectively arranged on the rack, and each detection station is used for placing a plurality of products to be detected;
the detection probes are used for detecting the magnetic flux of the product to be detected and comprise a plurality of detection probes, and the detection probes are electrically connected with the control processing system;
the sliding assembly comprises a sliding block, a sliding rail and connecting pieces, the two connecting pieces are slidably mounted on two sides of the rack, two ends of the sliding rail are respectively mounted on the two connecting pieces, the sliding block is slidably mounted on the sliding rail, and the detection probe is vertically slidably mounted on the sliding block;
the driving device is used for driving the sliding assembly to slide;
the display device comprises a touch display screen and a plurality of keys, and is electrically connected with the control processing system.
2. The magnetic flux measurement device according to claim 1, wherein the control processing system includes an editable logic controller electrically connected to the display device and the detection probe, respectively.
3. The magnetic flux measurement device of claim 2, wherein the editable logic controller comprises a multi-channel a/D conversion module, the multi-channel a/D conversion module being electrically connected to the test probe.
4. The magnetic flux measuring apparatus of claim 1, wherein the sensing probe is a hall sensing probe.
5. The magnetic flux measuring apparatus according to claim 1, wherein the number of the detection probes is 6.
6. The magnetic flux measurement device of claim 1, wherein the key comprises a switch key, a stop key, a reset key, a align key, a single step/continuous key, and a run key.
7. The magnetic flux measuring device according to claim 1, wherein first sliding grooves are formed on both sides of the bottom surface of the frame, and the two connecting members are slidably mounted on the first sliding grooves.
8. The magnetic flux measuring device according to claim 1, wherein the driving device includes a first driving device, a second driving device, and a third driving device, which are electrically connected to the control processing system, respectively, the first driving device is configured to drive the detecting probe to slide along the slide block, the second driving device is configured to drive the slide block to slide along the slide rail, and the third driving device is configured to drive the connecting member to slide along the rack.
9. The magnetic flux measurement device of claim 8, wherein the first drive, the second drive, and the third drive are motors.
10. The magnetic flux measuring device of claim 9, wherein a lead screw-nut mechanism is provided on the slider, the lead screw-nut mechanism being connected to the first drive means, the sensing probe being connected to the lead screw-nut mechanism.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020748623.8U CN212883599U (en) | 2020-05-08 | 2020-05-08 | Magnetic flux measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020748623.8U CN212883599U (en) | 2020-05-08 | 2020-05-08 | Magnetic flux measuring device |
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| CN212883599U true CN212883599U (en) | 2021-04-06 |
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| CN202020748623.8U Active CN212883599U (en) | 2020-05-08 | 2020-05-08 | Magnetic flux measuring device |
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| CN (1) | CN212883599U (en) |
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2020
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