CN217981797U - Device and system for scanning magnetic field distribution on surface of object - Google Patents
Device and system for scanning magnetic field distribution on surface of object Download PDFInfo
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- CN217981797U CN217981797U CN202220988701.0U CN202220988701U CN217981797U CN 217981797 U CN217981797 U CN 217981797U CN 202220988701 U CN202220988701 U CN 202220988701U CN 217981797 U CN217981797 U CN 217981797U
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Abstract
The utility model provides a scan object surface magnetic field distribution's device and system, it includes at least one magnetic field scanning board, and the magnetic field scanning board is used for scanning object surface magnetic field distribution, and the magnetic field scanning board includes the PCB board and sets up the magnetic field scanning circuit on the PCB board, the magnetic field scanning circuit includes: a magnetic sensor array; the communication module is used for being in communication connection with an external device; and one end of the microcontroller is connected with the communication module, the other end of the microcontroller is connected with the magnetic sensor array, the microcontroller receives a command from the external equipment through the communication module, acquires output data of each magnetic sensor in the magnetic sensor array so as to acquire the magnetic field distribution data on the surface of the scanned object, and transmits the magnetic field distribution data on the surface of the scanned object to the external equipment through the communication module. Compared with the prior art, the utility model discloses can conveniently get to acquire object surface magnetic field distribution data fast through the magnetic sensor array.
Description
[ technical field ] A method for producing a semiconductor device
The utility model relates to a magnetic sensor technical field especially relates to a device and system that scan object surface magnetic field distributes.
[ background of the invention ]
The magnetic sensor can be used for measuring the magnetic field environment of the position of the magnetic sensor in the space, because the size of the general magnetic sensor is smaller, the magnetic field environment which can be measured by a single magnetic sensor is also relatively smaller, if a magnetic field with a larger range needs to be measured, the single magnetic sensor can not cover the magnetic field environment completely, and therefore, a tool which is used for measuring the magnetic field environment of one area by arranging a plurality of magnetic sensors transversely and longitudinally at fixed distance is the magnetic sensor array.
However, how to conveniently and quickly acquire the magnetic field distribution data on the surface of the object through the magnetic sensor array is a technical problem to be solved urgently by those skilled in the art.
[ Utility model ] content
An object of the utility model is to provide a scan object surface magnetic field distribution's device and system, it can conveniently get to acquire object surface magnetic field distribution data fast through the magnetic sensor array.
According to an aspect of the utility model provides a device of scanning object surface magnetic field distribution, it includes at least one magnetic field scanning board, the magnetic field scanning board is used for scanning object surface magnetic field distribution, the magnetic field scanning board include the PCB board with set up in magnetic field scanning circuit on the PCB board, magnetic field scanning circuit includes: a magnetic sensor array; the communication module is used for being in communication connection with an external device; and one end of the microcontroller is connected with the communication module, the other end of the microcontroller is connected with the magnetic sensor array, the microcontroller receives a command from the external equipment through the communication module, acquires output data of each magnetic sensor in the magnetic sensor array so as to acquire the magnetic field distribution data on the surface of the scanned object, and transmits the magnetic field distribution data on the surface of the scanned object to the external equipment through the communication module.
According to another aspect of the present invention, the present invention provides a system for scanning magnetic field distribution on the surface of an object, which includes an external device and a device for scanning magnetic field distribution on the surface of an object. The device for scanning the magnetic field distribution on the surface of an object comprises at least one magnetic field scanning plate, wherein the magnetic field scanning plate is used for scanning the magnetic field distribution on the surface of the object, the magnetic field scanning plate comprises a PCB (printed circuit board) and a magnetic field scanning circuit arranged on the PCB, and the magnetic field scanning circuit comprises: a magnetic sensor array; the communication module is used for being in communication connection with an external device; and one end of the microcontroller is connected with the communication module, the other end of the microcontroller is connected with the magnetic sensor array, the microcontroller receives a command from the external equipment through the communication module, acquires output data of each magnetic sensor in the magnetic sensor array so as to acquire the magnetic field distribution data on the surface of the scanned object, and transmits the magnetic field distribution data on the surface of the scanned object to the external equipment through the communication module.
Compared with the prior art, the utility model provides a device and system that scan object surface magnetic field distribution not only can conveniently obtain object surface magnetic field distribution data fast through the magnetic sensor array, but also can draw out more vivid similar infrared thermal imaging's magnetic field imaging graph according to the object surface magnetic field distribution data that acquire.
[ description of the drawings ]
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without inventive labor. Wherein:
fig. 1 is an exploded view of an apparatus for scanning a magnetic field distribution on a surface of an object according to an embodiment of the present invention;
fig. 2 is a functional block diagram of a system for scanning a magnetic field distribution on a surface of an object in an embodiment of the present invention;
fig. 3 is a top and bottom view of the magnetic field scanning plate of fig. 1 in one embodiment of the present invention;
fig. 4 is an enlarged schematic view of a portion of fig. 3 in an embodiment of the present invention;
fig. 5 is a schematic diagram of a 3 x 2 splice of the magnetic field scan plate shown in fig. 1 according to an embodiment of the present invention;
fig. 6 is an imaging diagram of iPhone12 Pro magnetic field distribution obtained by the system for scanning magnetic field distribution on the surface of an object shown in fig. 2 according to an embodiment of the present invention;
FIG. 7 is a schematic diagram of X-Ray overlay of iPhone12 Pro with the magnetic field profile imaging shown in FIG. 6.
[ detailed description ] A
In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention is described in detail with reference to the accompanying drawings and the detailed description.
Reference herein to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic may be included in at least one implementation of the invention. The appearances of the phrase "in one embodiment" in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Unless otherwise specified, the terms connected, and connected as used herein mean electrically connected, directly or indirectly.
Fig. 1 is an exploded view of an apparatus for scanning magnetic field distribution on the surface of an object according to an embodiment of the present invention. The apparatus for scanning the magnetic field distribution on the surface of an object shown in fig. 1 comprises a magnetic field scanning plate 100 and a housing 200, wherein the magnetic field scanning plate 100 is accommodated in a cavity of the housing 200.
The magnetic field scanning Board 100 is used for scanning a magnetic field distribution on a surface of an object, and includes a PCB (Printed Circuit Board) 110 and a magnetic field scanning Circuit 120 disposed on the PCB 110, wherein the magnetic field scanning Circuit 120 includes a magnetic sensor array 121.
The housing 200 serves to protect the magnetic field scanning board 100, and in particular the magnetic sensor array 121 on the PCB board 110. An area of the housing 200 opposite to the magnetic sensor array 121 in the magnetic field scanning plate 100 is provided with a through-hole array 210, wherein each through-hole in the through-hole array 210 corresponds to each magnetic sensor in the magnetic sensor array 121 one-to-one.
In the embodiment shown in FIG. 1, the housing 200 comprises an upper cover 220 and a lower cover 230, wherein the upper cover 220 and the lower cover 230 are fastened to each other to form a cavity (not shown) for accommodating the magnetic field scanning plate 100; the upper cover 220 is provided with a through hole array 210 in a region opposite to the magnetic sensor array 121 in the magnetic field scanning plate 100. In one embodiment, the upper cover 220 and the lower cover 230 are 3D printed.
Fig. 2 is a functional block diagram of a system for scanning a magnetic field distribution on a surface of an object according to an embodiment of the present invention. The system for scanning the magnetic field distribution on the surface of the object shown in fig. 2 includes the apparatus for scanning the magnetic field distribution on the surface of the object (not shown) and the external device 300 shown in fig. 1.
In the apparatus for scanning the magnetic field distribution on the surface of an object, the magnetic field scanning circuit 120 disposed on the PCB 110 includes: a magnetic sensor array 121, a microcontroller 122, a communication module 123, an I2C multiplexing module 124, a power module 125, a user interaction module 126, and a data storage/cache module 127, wherein, in the embodiment shown in fig. 2, the magnetic sensor array 121 is a 3-axis magnetic sensor array. Please refer to fig. 3, which is a top view and a bottom view of the magnetic field scanning plate 100 shown in fig. 1 according to an embodiment of the present invention. Please refer to fig. 4, which is an enlarged schematic view of a part of the area of fig. 3 according to an embodiment of the present invention.
The communication module 123 is used for communication connection with the external device 300.
One end of the microcontroller 122 is connected to the communication module 123, and the other end of the microcontroller 122 is connected to the magnetic sensor array 121, the microcontroller 122 receives a command from the external device 300 through the communication module 123, collects output data of each magnetic sensor in the magnetic sensor array 122 to obtain magnetic field distribution data on the surface of the scanned object, and transmits the magnetic field distribution data on the surface of the scanned object to the external device 300 through the communication module 123. That is, the external device 300 is used to send commands to the microcontroller 122; the external device 300 is further configured to process and display the magnetic field distribution data on the surface of the scanned object outputted by the communication module 123. In a preferred embodiment, the external device 300 is further configured to draw a more vivid magnetic field imaging map similar to infrared thermal imaging according to the received magnetic field distribution data of the scanned object surface.
In the particular embodiment shown in fig. 2, communications module 123 includes a USB interface 1232 and/or a wireless module 1234; external devices 300 include handheld device 310 and/or computer 320; one end of the USB interface 1232 is connected to the computer 320, and the other end is connected to the microcontroller 122; the wireless module 1234 is connected to the handheld device 310 on one end and to the microcontroller 122 on the other end. The wireless module 1234 may use a bluetooth or WIFI module according to different usage environments, and commands and data are received and transmitted through the wireless module 1234, so that the handheld device 310 can process and display the magnetic field distribution data of the scanned object conveniently. The USB interface 1232 is used for connecting the computer 320, receiving the command sent by the computer 320, packaging the acquired magnetic field distribution data of the scanned object, sending the packaged data to the computer 320, and processing and displaying the magnetic field distribution data of the scanned object by the computer 320.
In the specific embodiment shown in fig. 2, an I2C multiplexing module 124 is connected between the microcontroller 122 and the magnetic sensor array 121, and one end of the I2C multiplexing module 124 is connected to the microcontroller 122, and the other end thereof is connected to the magnetic sensor array 121. The I2C multiplexing module 124 may multiplex the microcontroller 122 with limited number of I2C buses in a time-sharing manner, so as to achieve the purpose that the limited number of I2C buses control hundreds of 3-axis magnetic sensors in the magnetic sensor array 121. That is, the I2C multiplexing module 124 is configured to time-multiplex the I2C bus carried by the microcontroller 122 to each magnetic sensor in the magnetic sensor array 121.
The data storage/cache module 127 is connected to the microcontroller 122, and the data storage/cache module 127 is configured to store or cache data of the output data of the magnetic sensor acquired by the microcontroller 122.
In the embodiment shown in fig. 4, the data storage/cache module 127 includes a Micro-SD card 1271 and a ferroelectric memory 1272, and the Micro-SD card 1271 is used for data storage, so that the capacity is large, the reading and writing are convenient, and the data storage/cache module is used for storing the output data of the magnetic sensor during long-time testing; the data cache adopts a fuji ferroelectric memory 1272, and the ferroelectric memory (FRAM) 1272 is a nonvolatile RAM memory (namely, a random access memory), combines the characteristic of easy writing of an SRAM (namely, a static random access memory) and a DRAM (namely, a dynamic random access memory), has the nonvolatile characteristic of a Flash (namely, a Flash memory) and an EEPROM (namely, an electrically erasable and programmable read only memory), and is used for quickly temporarily storing the output data of the 3-axis magnetic sensor in the magnetic sensor array 121, thereby improving the data acquisition efficiency of the 3-axis magnetic sensor.
The user interaction module 126 is used to indicate various operating states of the magnetic field scanning panel 100 and to switch different operating modes of the magnetic field scanning panel 100. In the particular embodiment shown in FIG. 4, the user interaction module 126 includes a red LED1261, an RGB full-color LED1262, a key 1263, and a dip switch 1264, wherein the red LED1261 and the RGB full-color LED1262 are used to indicate the respective operating states of the magnetic field scanning plate 100, and the key and the dip switch are used to switch different operating modes of the magnetic field scanning plate 100.
The power module 125 includes a DC input power 1251, a DC-DC buck circuit 1252, and an LDO low dropout regulator 1253, and the power module 125 provides stable power for each module in the magnetic field scanning circuit 120.
In the specific embodiment shown in fig. 3 and 4, the magnetic sensor array 121, the I2C multiplexing module 124, the red LED1261, the LDO low dropout linear regulator 1253, the DC-DC buck circuit 1252, the DC input power supply 1251, the microcontroller 122, the ferroelectric memory 1272, the dip switch 1264, the USB interface 1232, the RGB full-color LED1262, the key 1263, and the DC-DC buck circuit 1252 are located on the front side of the PCB board 110; micro-SD card 1271 and wireless module 1234 are located on the back of PCB board 110.
With continued reference to fig. 3, in the embodiment shown in fig. 3, the magnetic sensors 1211 in the magnetic sensor array 121 are arranged laterally or longitudinally at a fixed distance to form a rectangular magnetic field measurement region (which may be referred to as a first magnetic field measurement region). The distance between the centers of two adjacent magnetic sensors in the magnetic sensor array 121 is D; the distance from at least one edge of the PCB 110 where the rectangular magnetic field measurement region is located to the center of the magnetic sensor located adjacent to the edge of the PCB 110 and in the rectangular magnetic field measurement region is D/2. In the embodiment shown in fig. 3, the rectangular magnetic field measurement area is located at a distance D/2 from the upper edge of the PCB 110 to the center of the magnetic sensor located adjacent to the upper edge of the PCB 110 and located in the rectangular magnetic field measurement area; the distance from the lower edge of the PCB 110 where the rectangular magnetic field measurement area is located to the center of the magnetic sensor which is adjacent to the lower edge of the PCB 110 and located in the rectangular magnetic field measurement area is D/2; the distance from the left edge of the PCB 110 where the rectangular magnetic field measurement area is located to the center of the magnetic sensor located adjacent to the left edge of the PCB 110 and located in the rectangular magnetic field measurement area is D/2.
In this way, it is convenient to place two or more magnetic field scanning plates 100 in the same plane and splice them together, so that the magnetic sensor arrays 121 in two or more magnetic field scanning plates 100 are placed in the same plane and spliced together, thereby obtaining a larger-area magnetic field measurement region (which may be referred to as a second magnetic field measurement region), and in the larger-area magnetic field measurement region, the respective magnetic sensors are arranged laterally or longitudinally at a fixed distance. That is to say, the number of the magnetic field scanning plates 100 may be n, and n magnetic field scanning plates 100 are located in the same plane and are spliced together, so that the magnetic sensor arrays 121 in the n magnetic field scanning plates 100 are placed in the same plane and are spliced together, thereby obtaining a larger-area magnetic field measurement region (which may be referred to as a second magnetic field measurement region), and in the larger-area magnetic field measurement region, the magnetic sensors are arranged transversely or longitudinally at a fixed distance, where n is a natural number greater than or equal to 2. Please refer to fig. 5, which is a schematic diagram of a 3 x 2 splicing of the magnetic field scan plate shown in fig. 1 according to an embodiment of the present invention.
Please refer to fig. 6, which is an image of iPhone12 Pro magnetic field distribution obtained by the system for scanning magnetic field distribution on the surface of an object shown in fig. 2 according to an embodiment of the present invention. Referring to fig. 7, which is a schematic diagram of X-Ray superposition of iPhone12 Pro and magnetic field distribution imaging shown in fig. 6, in the embodiment shown in fig. 7, 710 is a camera of iPhone12 Pro, 720 is a wireless charging magnetic suction interface of iPhone12 Pro, 730 is a linear vibration motor of iPhone12 Pro, and 740 is a speaker of iPhone12 Pro.
Based on fig. 6 and fig. 7, it can be known that the magnetic field distribution imaging diagram of the scanned object obtained by the system for scanning the magnetic field distribution on the surface of the object provided by the utility model can accurately reflect the magnetic field distribution of the scanned object.
To sum up, the utility model provides a scan object surface magnetic field distribution's device and system, it not only can be through the convenient quick acquisition of magnetic sensor array get object surface magnetic field distribution data, but also can draw out the magnetic field imaging graph of more vivid similar infrared thermal imaging according to the object surface magnetic field distribution data that acquire.
In the present invention, the terms "connected", "connecting" and the like mean electrically connected, and if not specifically stated, mean directly or indirectly electrically connected.
The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiment, but all equivalent modifications or changes made by those skilled in the art according to the present invention should be included in the protection scope of the claims.
Claims (15)
1. A device for scanning the magnetic field distribution on the surface of an object is characterized in that,
it comprises at least one magnetic field scanning plate, the magnetic field scanning plate is used for scanning the magnetic field distribution on the surface of an object, the magnetic field scanning plate comprises a PCB and a magnetic field scanning circuit arranged on the PCB,
the magnetic field scanning circuit includes:
a magnetic sensor array;
the communication module is used for being in communication connection with an external device;
and one end of the microcontroller is connected with the communication module, the other end of the microcontroller is connected with the magnetic sensor array, the microcontroller receives a command from the external equipment through the communication module, acquires output data of each magnetic sensor in the magnetic sensor array so as to acquire the magnetic field distribution data on the surface of the scanned object, and transmits the magnetic field distribution data on the surface of the scanned object to the external equipment through the communication module.
2. The apparatus for scanning the magnetic field distribution on the surface of an object according to claim 1,
the external device is used for sending a command to the microcontroller;
the external device is used for processing and displaying the magnetic field distribution data on the surface of the scanned object output by the communication module;
the external equipment is used for drawing a magnetic field imaging graph according to the received magnetic field distribution data on the surface of the scanned object;
the magnetic sensor array is a 3-axis magnetic sensor array.
3. The apparatus for scanning the magnetic field distribution on the surface of an object according to claim 2,
the external equipment is a computer and/or handheld equipment;
the communication module is a USB interface and/or a wireless module.
4. The apparatus for scanning the magnetic field distribution on the surface of an object according to claim 1,
the magnetic field scanning circuit further comprises an I2C multiplexing module,
one end of the I2C multiplexing module is connected with the microcontroller, and the other end of the I2C multiplexing module is connected with the magnetic sensor array;
the I2C multiplexing module is used for multiplexing an I2C bus carried by the microcontroller to each magnetic sensor in the magnetic sensor array in a time-sharing manner.
5. The apparatus for scanning the magnetic field distribution on the surface of an object according to claim 1,
the magnetic field scanning circuit further comprises a data storage/cache module, the data storage/cache module is connected with the microcontroller,
the data storage/cache module is used for storing or caching data of the output data of the magnetic sensor acquired by the microcontroller.
6. The apparatus according to claim 5, wherein the magnetic field distribution unit is configured to scan the magnetic field distribution on the surface of the object,
the data storage is used for saving the output data of the magnetic sensor during long-time testing;
the data cache is used for temporarily storing the output data of the magnetic sensor.
7. The apparatus according to claim 6, wherein the magnetic field distribution unit is configured to scan the magnetic field distribution on the surface of the object,
the data storage/cache module comprises a Micro-SD card and a ferroelectric memory,
the Micro-SD card is used for storing the output data of the magnetic sensor;
the ferroelectric memory is used for caching the output data of the magnetic sensor.
8. The apparatus for scanning the magnetic field distribution on the surface of an object according to claim 1,
each magnetic sensor in the magnetic sensor array is transversely or longitudinally arranged at a fixed distance to form a first magnetic field measurement area;
the distance between the centers of two adjacent magnetic sensors in the magnetic sensor array is D;
and the distance from at least one edge of the PCB where the first magnetic field measurement area is located to the center of the magnetic sensor which is close to the edge of the PCB and is located in the first magnetic field measurement area is D/2.
9. The apparatus according to claim 8, wherein the magnetic field distribution unit is configured to scan the magnetic field distribution on the surface of the object,
the number of the magnetic field scanning plates is n, wherein n is a natural number more than or equal to 2;
the n magnetic field scanning plates are positioned in the same plane and spliced together, so that the magnetic sensor arrays in the n magnetic field scanning plates are placed in the same plane and spliced together, thereby obtaining a second magnetic field measurement area, and in the second magnetic field measurement area, the magnetic sensors are transversely or longitudinally arranged at a fixed distance,
wherein the area of the second magnetic field measurement region is larger than the area of the first magnetic field measurement region.
10. The apparatus according to claim 1, wherein the magnetic field scanning circuit further comprises a user interaction module,
the user interaction module is used for indicating each working state of the magnetic field scanning plate and switching different working modes of the magnetic field scanning plate.
11. The apparatus for scanning the magnetic field distribution on the surface of an object according to claim 10,
the user interaction module comprises an LED, a key and a dial switch,
the LED is used for indicating each working state of the magnetic field scanning plate;
the key and the dial switch are used for switching different working modes of the magnetic field scanning plate.
12. The apparatus for scanning the magnetic field distribution on the surface of an object according to claim 1,
it also comprises a shell, wherein the shell is provided with a plurality of through holes,
the at least one magnetic field scanning plate is accommodated in the cavity of the shell;
and a through hole array is arranged in the region of the shell opposite to the magnetic sensor array in the magnetic field scanning plate.
13. The apparatus according to claim 12, wherein the magnetic field distribution unit is configured to scan the magnetic field distribution on the surface of the object,
the housing comprises an upper cover and a lower cover,
the upper cover and the lower cover are buckled with each other to form a cavity for accommodating the magnetic field scanning plate;
the upper cover is provided with the through hole array.
14. The apparatus for scanning the magnetic field distribution on the surface of an object according to claim 1,
the magnetic field scanning circuit further comprises a power supply module,
the power supply module comprises a direct current input power supply, a DC-DC voltage reduction circuit and an LDO low dropout linear regulator;
the power supply module provides stable power supply for each module in the magnetic field scanning circuit.
15. A system for scanning the magnetic field distribution over the surface of an object, comprising an external device and an apparatus for scanning the magnetic field distribution over the surface of an object according to any one of claims 1 to 14.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220988701.0U CN217981797U (en) | 2022-04-26 | 2022-04-26 | Device and system for scanning magnetic field distribution on surface of object |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220988701.0U CN217981797U (en) | 2022-04-26 | 2022-04-26 | Device and system for scanning magnetic field distribution on surface of object |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217981797U true CN217981797U (en) | 2022-12-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220988701.0U Active CN217981797U (en) | 2022-04-26 | 2022-04-26 | Device and system for scanning magnetic field distribution on surface of object |
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| Country | Link |
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| CN (1) | CN217981797U (en) |
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- 2022-04-26 CN CN202220988701.0U patent/CN217981797U/en active Active
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