CN211671137U - Geomagnetic module and wearable device - Google Patents

Abstract

The utility model discloses a terrestrial magnetism module and wearing equipment, the terrestrial magnetism module comprises a PCB substrate; the geomagnetic chip is attached to the upper surface of the PCB substrate in a pasting mode; the shielding device is positioned above the geomagnetic chip and used for shielding an interference source close to the geomagnetic chip; and each connecting welding spot corresponds to the pin of the geomagnetic chip and is arranged on the lower surface of the PCB substrate. The utility model discloses in design into the module with earth magnetism chip according to the design manual, convenient to use, and evade earth magnetism interference factor when the design, be favorable to the earth magnetism calibration.

Description

Geomagnetic module and wearable device

Technical Field

The utility model relates to an intelligence wearing equipment technical field, specifically speaking relates to a terrestrial magnetism module and have wearing equipment of this terrestrial magnetism module.

Background

Nowadays, intelligent wearable devices (such as VR (Virtual Reality) glasses, smart bracelets and the like) have been walked into user's life in a large number, bringing new experience and enjoyment to user's life. The geomagnetic function (i.e. the function of measuring the earth magnetic field and correcting and compensating the motion direction, posture angle, motion angle, speed, etc. of the human body by the absolute pointing function) is basically the standard design of the wearable device at present.

To different wearing equipment products, when the earth magnetism chip design, probably because of there being structural layout or design position scheduling problem, lead to earth magnetism chip to appear failing when the calibration, influence the earth magnetism function, and greatly influenced the user and used experience. In addition, when the geomagnetic chip is laid out, a designer needs to design the position of the geomagnetic chip on site according to a design guideline of the geomagnetic chip, resulting in a long product design period.

Disclosure of Invention

An object of the utility model is to provide a geomagnetic module and wearing equipment designs the module into with the earth magnetism chip according to the design manual, convenient to use, and avoids the earth magnetism interference factor when the design, is favorable to the earth magnetism calibration.

In order to realize the purpose of the utility model, the utility model adopts the following technical scheme to realize:

a geomagnetic module, comprising: a PCB substrate; the geomagnetic chip is attached to the upper surface of the PCB substrate in a pasting mode; the shielding device is positioned above the geomagnetic chip and used for shielding an interference source close to the geomagnetic chip; and each connecting welding spot corresponds to the pin of the geomagnetic chip and is arranged on the lower surface of the PCB substrate.

As mentioned above, the shielding device is a height limiting plate, which is disposed opposite to the PCB substrate and has a first distance from the PCB.

The geomagnetic module as above, further comprising: and one end of the positioning strut is arranged on the PCB substrate, and the other end of the positioning strut is arranged on the height limiting plate and used for fixing the height limiting plate.

In the geomagnetic module, the first distance is greater than or equal to 10 mm.

As for the geomagnetic module, the height limiting plate is a plastic piece.

As above, in the geomagnetic module, the shielding device is a shielding case for covering the geomagnetic chip.

As described above, in the geomagnetic module, solder is applied between the PCB substrate and the portion of the shield case contacting the PCB substrate.

In the geomagnetic module, the shielding case is made of copper albuginea; the shield case has: a top plate; and the peripheral side plates are respectively and vertically butted at the four edges of the top plate.

The geomagnetic module is provided with a polar identification point.

The utility model discloses still relate to a wearing equipment, it includes as above the earth magnetism module.

Compared with the prior art, the utility model discloses an advantage is with positive effect: the geomagnetic chip, the PCB substrate and the shielding device are combined to form a geomagnetic module, so that the geomagnetic chip is ensured to be far away from an interference source, and normal work and geomagnetic calibration of the geomagnetic chip are facilitated; the modular earth magnetism module of formation facilitates the use, and need not consider the arrangement of different ground magnetic chips among the different wearing equipment, reduces product development cycle.

Other features and advantages of the present invention will become more apparent from the following detailed description of the invention when read in conjunction with the accompanying drawings.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

Fig. 1 is a side view of an embodiment of a geomagnetic module according to the present invention;

fig. 2 is a top view of an embodiment of the geomagnetic module according to the present invention, wherein the shielding device is not shown;

fig. 3 is a bottom view of an embodiment of the geomagnetic module of the present invention;

fig. 4 is a side view of another embodiment of the geomagnetic module according to the present invention;

fig. 5 is a top view of another embodiment of the geomagnetic module according to the present invention, wherein the shielding device is not shown;

fig. 6 is a bottom view of another embodiment of the geomagnetic module according to the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings and embodiments.

In the existing intelligent wearable device, the geomagnetic function is standard design, the position of a geomagnetic chip needs to be considered when a wearable device product is designed, sometimes, the geomagnetic calibration fails because the geomagnetic chip is improperly arranged, in order to avoid failure of the geomagnetic function calibration, in this embodiment, the geomagnetic chip is designed into a geomagnetic module according to a design guide of the geomagnetic chip (for example, the geomagnetic chip is required to be far away from a large-current circuit by more than 10 mm; if peripheral devices comprise iron, cobalt or nickel, the devices are required to be far away from the circuit by 10mm, and the like).

This embodiment earth magnetism module includes PCB base plate 1, shielding device 2, earth magnetism chip 3 and a plurality of connection solder joint 7, and earth magnetism chip 3 sets up on PCB base plate 1's upper surface, can set up the intermediate position at PCB base plate 1, also can set up the position that is close to the edge at PCB base plate 1.

The PCB substrate 1 is a carrier of the geomagnetic chip 3 and peripheral devices thereof, the geomagnetic chip 3 is used for magnetic field detection, and the shielding device 2 is used to avoid an interference source (e.g., a structural member containing iron, cobalt, nickel, etc.) that interferes with the geomagnetic chip 3.

Example one

As shown in fig. 1 to 3, in the present embodiment, the geomagnetic chip 3 is disposed at the center of the PCB substrate 1, and according to the design guidelines of the geomagnetic chip 3, the length of the short side of the PCB substrate 1 should be greater than 20mm, that is, the size of the geomagnetic module in the plane direction should be greater than 20 mm. As shown in fig. 4 to 6, the geomagnetic chip 3 is disposed at a position close to one side edge of the PCB substrate 1, and thus, it is necessary to ensure that the length of the short side of the PCB substrate 1 is greater than 10 mm.

As shown in fig. 1, the shielding device 2 of the present embodiment is a height limiting plate, which is disposed directly above the PCB substrate 1, and has a first distance from the height of the PCB substrate 1, the first distance is greater than or equal to 10mm, the distance can be optimized according to different magnetic chips 3, and the height limiting plate can be made of plastic or other materials that do not contain iron, cobalt, or nickel.

As shown in fig. 2, the PCB substrate 1 is provided with fixing holes 5, and specifically, four fixing holes are respectively formed at four corners of the PCB substrate 1. And with continued reference to fig. 1, the fixing post 4 has one end fixed in the fixing hole 5 and the other end abutting against the lower surface of the height-limiting plate. Four fixing pillars 4 are provided corresponding to the four fixing holes 5, respectively, and the heights of the four fixing pillars 4 are uniform, for example, 10mm or more, as shown in fig. 1.

Be provided with each connection welding 7 that corresponds with the pin of earth magnetism chip 3 on PCB base plate 1's lower surface, be convenient for can be with earth magnetism module direct paster to the mainboard on. Fig. 3 shows eight pins of a certain geomagnetic chip 3.

When using the earth magnetism module, directly through connect 7 paster of solder joint to the mainboard on can to set up forbidden district on the mainboard, avoid heavy current circuit to be close to earth magnetism chip 3, in order to avoid the interference factor to earth magnetism chip 3.

As shown in fig. 3, a polarity mark point 6 is specifically disposed on the lower surface of the PCB substrate 1 on the geomagnetic module, and is used for being well matched with the attached motherboard, that is, the positive and negative electrodes or the first pins of the geomagnetic chip 3 are in the same direction as the positive and negative electrodes and the first pins on the motherboard.

The geomagnetic module ensures the safe distance between the position of the geomagnetic chip 3 and an interference source of magnetic materials containing iron, cobalt, nickel and the like in the plane direction according to the size of the geomagnetic module; in the direction of height, guarantee by shielding device 2 with the safe distance of the interference sources of magnetic materials such as iron content, cobalt, nickel to can guarantee this earth magnetism chip 3's normal work and earth magnetism calibration, and this earth magnetism module uses as a module, conveniently is applied to the wearing equipment of each difference, avoids leading to the circumstances of earth magnetism calibration failure because of the overall arrangement is unreasonable, and reduces VR product development cycle.

Example two

Alternatively, the shielding device 2 may be selected as a shielding can, and the material of the shielding can may be copper white. The shield covers the geomagnetic chip 3.

The shield cover of the embodiment comprises a top plate and four side plates butted at four edges of the top plate, and when the shield cover covers the ground magnetic chip 3, the edges of the four side plates are respectively contacted with the PCB substrate 1 and fixedly contacted with the PCB substrate through soldering tin.

EXAMPLE III

The embodiment relates to a wearable device, which comprises a geomagnetic module, wherein the geomagnetic module can be a geomagnetic module related to the first embodiment or the second embodiment.

When designing wearing equipment, if need earth magnetism chip 3, can directly take the use with the earth magnetism module of laying out, and through connecting 7 paster to wearing equipment's of solder joint mainboard can, facilitate the use and reduce product development cycle, and set up the forbidden district of laying out on the mainboard, avoid heavy current circuit to be close to earth magnetism chip 3, with the interference factor of avoidng to earth magnetism chip 3, reduce in wearing equipment and lead to earth magnetism function calibration failure because of earth magnetism chip 3 overall arrangement is unreasonable, be favorable to earth magnetism chip 3 normal work and earth magnetism calibration among the wearing equipment. The above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or that equivalents may be substituted for elements thereof; such modifications and substitutions do not depart from the spirit and scope of the present invention, which is claimed.

Claims (10)

1. A geomagnetic module, comprising:

a PCB substrate;

the geomagnetic chip is attached to the upper surface of the PCB substrate in a pasting mode;

the shielding device is positioned above the geomagnetic chip and used for shielding an interference source close to the geomagnetic chip;

and each connecting welding spot corresponds to the pin of the geomagnetic chip and is arranged on the lower surface of the PCB substrate.

2. The geomagnetic module according to claim 1, wherein the shielding device is a height limiting plate disposed opposite to the PCB substrate and having a first distance from the PCB substrate.

3. The geomagnetic module according to claim 2, further comprising:

and one end of the positioning strut is arranged on the PCB substrate, and the other end of the positioning strut is arranged on the height limiting plate and used for fixing the height limiting plate.

4. The geomagnetic module according to claim 2, wherein the first distance is greater than or equal to 10 mm.

5. The geomagnetic module of claim 2, wherein the height-limiting plate is a plastic part.

6. The geomagnetic module according to claim 1, wherein the shielding device is a shielding case configured to cover the geomagnetic chip.

7. The geomagnetic module according to claim 6, wherein solder is applied between the PCB substrate and a portion of the shielding case contacting the PCB substrate.

8. The geomagnetic module according to claim 7, wherein the shielding case is made of cupronickel; the shield case has:

a top plate;

and the peripheral side plates are respectively and vertically butted at the four edges of the top plate.

9. A geomagnetic module according to any one of claims 1 to 8, wherein the geomagnetic module is provided with a polar identification point.

10. Wearing equipment, characterized by comprising the geomagnetic module of any one of claims 1 to 9.

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