CN211786050U - Prevent magnetic field meter front end structure of N, S utmost point erroneous judgement - Google Patents
Prevent magnetic field meter front end structure of N, S utmost point erroneous judgement Download PDFInfo
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- CN211786050U CN211786050U CN202020345270.7U CN202020345270U CN211786050U CN 211786050 U CN211786050 U CN 211786050U CN 202020345270 U CN202020345270 U CN 202020345270U CN 211786050 U CN211786050 U CN 211786050U
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Abstract
The utility model relates to a prevent magnetic field meter front end structure of N, S utmost point erroneous judgement, including shell, hall sensor, PCB board, hall sensor is connected with the welding mode electricity with the PCB board, shell one end trompil, hall sensor embedding hole is downthehole and fixed, and hall sensor only has a sensitive face to be located outside the shell, and all the other sensitive faces seal inside the shell. The shell is a magnetic field meter measuring head shell or an encapsulation shell. The design always ensures that one sensitive surface of the Hall sensor can be directly contacted with the magnetic field collision force line, and can effectively avoid misjudgment of a magnetic field meter (gaussmeter, teslameter) when measuring magnetic fields N and S; the design can effectively reduce the magnetic field intensity error of the magnetometer caused by the deformation of the Hall sensor PCB fixing plate.
Description
Technical Field
The utility model relates to a magnetometer technical field, specific prevent N, magnetic field meter front end structure of S utmost point erroneous judgement that says so.
Background
The existing magnetic field meter (gauss meter, teslameter) functions according to the principle: the Hall sensor is fixed on the Hall sensor fixing PCB in a surface-mounted mode. The Hall sensor collects a magnetic field N, and the signal S is transmitted to the CPU through the Hall sensor fixed PCB and is judged by the CPU to show the magnetic field polarity in the magnetic field polarity display area.
The existing magnetic field meter (gaussmeter, teslameter) can generate the phenomenon of misjudgment of the magnetic field polarity N and S during the measurement of the magnetic field polarity N and S. Because the existing magnetic field meter (gaussmeter, teslameter) usually selects a Hall sensor chip as a magnetic field measurement data acquisition sensor. Such hall sensor chips all have a common output characteristic: when the N and S polarities of the magnetic fields are measured, when the Hall sensor measures the magnet or the measured object and aims at the S magnetic field for measurement, and when the Hall sensor measures the magnet or the measured object and aims at the N magnetic field for measurement, the output voltage or current signals are the same, the judgment of the master control CPU of the magnetic field meter is made to be wrong, and the N poles or the S poles are displayed in the polarity display area. Nowadays, magnetometers (gauss, teslame) hall sensors: the Hall sensor is directly welded on the PCB in a welding mode, the front side and the back side of the Hall sensor can participate in magnetic field polarity measurement, magnetic field polarity judgment errors are easily caused, and production efficiency improvement and user product quality guarantee are not facilitated. Serious quality incidents can occur.
On the other hand, the current magnetometer hall sensor is connected with the long-strip-shaped hall sensor fixing PCB, so that the phenomenon of magnetic field intensity measurement errors is easy to occur, and because the hall sensor fixing PCB has certain toughness, when an operator holds the handheld area to measure the magnetic field of the magnet or the measured object, the hall sensor fixing PCB can be deformed to different degrees due to the stress, so that the included angle between the hall sensor and the magnet or the measured object is formed on the surface of the hall sensor and the surface of the magnet or the measured object. The Hall sensor has requirements on the aspect of magnetic lines of force of a measured object and an included angle, so that the magnetometer has errors of different degrees.
SUMMERY OF THE UTILITY MODEL
To the not enough of above-mentioned prior art, for avoiding the magnetic field meter (gauss meter, teslameter) to appear magnetic field meter (gauss meter, teslameter) N when measuring, the S magnetic pole is measured the misjudgement and because the magnetic field intensity measuring error that the hall sensor fixed plate warp and cause, the utility model provides a prevent magnetic field meter front end structure of N, S utmost point misjudgement.
The utility model provides a pair of prevent N, magnetic field meter front end structure that S utmost point misjudged is realized through following technical scheme:
the utility model provides a prevent magnetic field meter front end structure of N, S utmost point erroneous judgement, includes shell, hall sensor, PCB board, hall sensor is connected with PCB board electricity with the welding mode, shell one end trompil, hall sensor embedding hole is downthehole and fixed, and hall sensor only one sensitive face is located outside the shell, and other sensitive faces seal inside the shell.
The shell is a magnetic field meter measuring head shell or an encapsulation shell.
The utility model has the advantages that:
1. the design always ensures that one sensitive surface of the Hall sensor can be directly contacted with the magnetic field collision force line, and can effectively avoid misjudgment of a magnetic field meter (gaussmeter, teslameter) when measuring magnetic fields N and S;
2. the design can effectively reduce the magnetic field intensity error of the magnetometer caused by the deformation of the Hall sensor PCB fixing plate.
Drawings
FIG. 1 is a sectional view of the structure of the present invention;
fig. 2 is a schematic structural diagram of embodiment 1 of the present invention;
fig. 3 is a schematic structural diagram of embodiment 2 of the present invention;
fig. 4 is a schematic structural view of embodiment 3 of the present invention.
Detailed Description
The technical solution of the present invention will be described clearly and completely by the following embodiments, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by the skilled in the art without creative work belong to the protection scope of the present invention.
Example 1
The front end structure of the magnetic field meter for preventing the misjudgment of the N and S poles comprises a shell 2, a Hall sensor 1 and a PCB 3, wherein the Hall sensor 1 is electrically connected with the PCB 2 in a welding mode, one end of the shell 2 is provided with a hole, the Hall sensor 1 is embedded into the hole and fixed, only one sensitive surface of the Hall sensor 1 is positioned outside the shell, namely only one sensitive surface can directly contact with a magnetic field line of force B, and the other sensitive surfaces are sealed inside the shell 2. Wherein the shell is a magnetic field meter measuring head shell F.
Example 2
The front end structure of the magnetic field meter for preventing the misjudgment of the N and S poles comprises a shell 2, a Hall sensor 1 and a PCB 3, wherein the Hall sensor 1 is electrically connected with the PCB 2 in a welding mode, one end of the shell 2 is provided with a hole, the Hall sensor 1 is embedded into the hole and fixed, only one sensitive surface of the Hall sensor 1 is positioned outside the shell, namely only one sensitive surface can directly contact with a magnetic field line of force B, and the other sensitive surfaces are sealed inside the shell 2. The shell is a packaging shell P, and the packaging shell P is connected with the magnetic field meter measuring head F in a connection mode such as opposite insertion.
Example 3
As shown in H1-H5 in fig. 4, the hall sensor 1 and the PCB board 3 can be connected in five positions.
The above-described embodiments are merely illustrative of embodiments of the present invention, which are described in detail and detail, but are not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention.
Claims (3)
1. The utility model provides a prevent magnetic field meter front end structure of N, S utmost point erroneous judgement which characterized in that: the Hall sensor is electrically connected with the PCB in a welding mode, one end of the shell is provided with a hole, the Hall sensor is embedded into the hole and fixed, only one sensitive surface of the Hall sensor is positioned outside the shell, and other sensitive surfaces are sealed inside the shell.
2. The front end structure of a magnetometer for preventing misjudgment of N and S poles according to claim 1, wherein the housing is a magnetometer measuring head shell.
3. The front end structure of the magnetic field meter for preventing the misjudgment of the N and S poles is characterized in that the shell is a packaging shell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020345270.7U CN211786050U (en) | 2020-03-18 | 2020-03-18 | Prevent magnetic field meter front end structure of N, S utmost point erroneous judgement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020345270.7U CN211786050U (en) | 2020-03-18 | 2020-03-18 | Prevent magnetic field meter front end structure of N, S utmost point erroneous judgement |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211786050U true CN211786050U (en) | 2020-10-27 |
Family
ID=72929488
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020345270.7U Active CN211786050U (en) | 2020-03-18 | 2020-03-18 | Prevent magnetic field meter front end structure of N, S utmost point erroneous judgement |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211786050U (en) |
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2020
- 2020-03-18 CN CN202020345270.7U patent/CN211786050U/en active Active
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