CN210293107U - Angle sensor and vehicle - Google Patents

Abstract

The utility model provides an angle sensor and vehicle, include: the inductive sensor comprises an inductive sensor chip, a group of coils and a conductor, wherein the group of coils and the inductive sensor chip are arranged on a circuit board and are electrically connected, and the conductor is rotatably connected above the group of coils. The utility model discloses abandoned the magnetic component commonly used, consequently can provide higher reliability and lower cost, moreover, the sensor chip of inductance type to magnetism stray field-parasitic magnetic field "immunity", can not receive the electromagnetic interference who arouses by magnetism stray field to and the potential safety hazard that causes from this.

Description

Angle sensor and vehicle

Technical Field

The utility model relates to an electronic circuit field specifically, relates to an angle sensor and vehicle.

Background

Patent publication No. CN107796298A discloses an angle sensor, which includes a housing and a rotor, wherein the housing is provided with a cavity for accommodating the rotor; the rotor is limited in the accommodating cavity to rotate, and a magnet device rotating along with the rotor is arranged on the rotor; the outer side of the shell is provided with an induction device which senses the magnetic field change when the magnet device rotates and generates an angle induction signal of the rotation of the rotor; the rotor is characterized in that a movable groove in contact with the end part of the inner side of the rotor is arranged at the bottom in the containing cavity, a limiting groove is formed in the movable groove along the edge of the bottom of the groove, a limiting pin is arranged at the end part of the rotor and inserted into the limiting groove, and the rotation angle of the rotor is limited.

The conventional angle sensor senses a change in a magnetic field of a magnet device rotating with a rotor using a hall sensing unit, thereby achieving angle sensing. However, an angle sensor using a magnetic element is expensive and low in reliability, and is susceptible to electromagnetic interference caused by a magnetic stray field.

SUMMERY OF THE UTILITY MODEL

To the defect among the prior art, the utility model aims at providing an angle sensor and vehicle.

According to the utility model provides a pair of angle sensor, include: the inductive sensor comprises an inductive sensor chip, a group of coils and a conductor, wherein the group of coils and the inductive sensor chip are arranged on a circuit board and are electrically connected, and the conductor is rotatably connected above the group of coils.

Preferably, the group of coils includes: an outer coil and at least two inner coils;

the outer coil is electrically connected with a first port of the inductive sensor chip;

the at least two inner coils are staggered with each other and evenly distributed in the outer coil, and two inner coils of the at least two inner coils are electrically connected with the second port and the third port of the inductive sensor chip respectively.

Preferably, the outer-layer coil is arranged in a multi-turn rotating mode.

Preferably, the outer coil and the inner coil are both circular.

Preferably, the inductive sensor chip comprises a ZMID520x inductive sensor chip.

Preferably, the conductor is a fan-shaped conductor or a plurality of fan-shaped conductors.

According to the utility model provides a pair of angle sensor, include: the inductive sensor comprises an inductive sensor chip, a group of coils and a conductor, wherein the group of coils and the inductive sensor chip are arranged on a circuit board and are electrically connected, and the conductor is rotatably connected above the group of coils;

the set of coils includes: an outer coil and at least two inner coils;

the outer coil is electrically connected with a first port of the inductive sensor chip;

the at least two inner coils are staggered with each other and are uniformly distributed in the outer coil, and two inner coils of the at least two inner coils are respectively and electrically connected with the second port and the third port of the inductive sensor chip;

the outer-layer coil is rotatably arranged in a plurality of circles;

the outer coil and the inner coil are both circular;

the inductive sensor chip comprises a ZMID520x inductive sensor chip;

the conductor is a fan-shaped conductor or a plurality of fan-shaped conductors.

According to the utility model provides a pair of vehicle, including foretell angle sensor.

Compared with the prior art, the utility model discloses following beneficial effect has:

the utility model discloses abandoned the magnetic component commonly used, consequently can provide higher reliability and lower cost, moreover, the sensor chip of inductance type to magnetism stray field-parasitic magnetic field "immunity", can not receive the electromagnetic interference who arouses by magnetism stray field to and the potential safety hazard that causes from this.

Drawings

Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:

fig. 1 is a schematic structural view of the present invention;

fig. 2 is a schematic diagram of an embodiment of the present invention;

fig. 3 is a schematic diagram of another embodiment of the present invention.

Detailed Description

The present invention will be described in detail with reference to the following embodiments. The following examples will assist those skilled in the art in further understanding the present invention, but are not intended to limit the invention in any way. It should be noted that various changes and modifications can be made by one skilled in the art without departing from the spirit of the invention. These all belong to the protection scope of the present invention.

As shown in fig. 1, the present invention provides an angle sensor, including: the sensor includes an inductive sensor chip, a set of coils disposed on a circuit board and electrically connected to the inductive sensor chip, and an electrical conductor (not shown in FIG. 1) rotatably connected over the set of coils. The coils in the figure are formed by arranging the coils on the bottom layer of the circuit board and are connected with the lines on the upper layer through holes (round points in the figure), so that the coils are prevented from crossing each other.

As shown in fig. 1, the group coil includes: the coil comprises an outer coil and at least two inner coils, wherein the outer coil and the inner coils are both circular; the outer coil is electrically connected with a first port of the inductive sensor chip; the outer coil is the rotatory setting of many rings, and crisscross each other between two at least inlayer coils, evenly arrange in outer coil, two inlayer coils in two at least inlayer coils are connected with the second port of inductance type sensor chip, third port electricity respectively. In this embodiment, the number of the inner coils is 4, but the present invention is not limited thereto. The inductive sensor chip comprises a ZMID520x inductive sensor chip.

As shown in fig. 2, the conductor has a fan shape, and the coil voltages detected at different rotation angles are shown in the figure. As shown in fig. 3, the conductor is a plurality of fan-shaped conductors, and the coil voltages detected at different rotation angles are as shown in the figure.

The position of a conductor sliding or rotating on a set of coils (printed as copper coils on a PCB) is detected by using eddy currents and inductive physics principles. The exact position of the target above the coil is obtained by demodulating and processing the secondary voltage from the receiver coil, ZMID520X has three wires with programmable non-linear protection, 9-point user linearization, programming through output pins, over-voltage protection and reverse polarity protection, and typical applications include steering angle sensors, valve sensors, linear actuator position sensors and level sensors.

The utility model discloses can realize rotatory end axle, side shaft, linear and radian motion are from the small angle to 360 degrees at utmost, and the mechanical angle error of arbitrary directions such as vertical or level can be allowed in the extensible coil design. The sensor chip can bear the environment temperature of up to 150 degrees and other severe environments such as dust or moisture.

In the description of the present application, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present application and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present application.

The foregoing description of the specific embodiments of the invention has been presented. It is to be understood that the present invention is not limited to the specific embodiments described above, and that various changes or modifications may be made by those skilled in the art within the scope of the appended claims without departing from the spirit of the invention. The embodiments and features of the embodiments of the present application may be combined with each other arbitrarily without conflict.

Claims (8)

1. An angle sensor, comprising: the inductive sensor comprises an inductive sensor chip, a group of coils and a conductor, wherein the group of coils and the inductive sensor chip are arranged on a circuit board and are electrically connected, and the conductor is rotatably connected above the group of coils.

2. The angle sensor of claim 1, wherein the set of coils comprises: an outer coil and at least two inner coils;

the outer coil is electrically connected with a first port of the inductive sensor chip;

the at least two inner coils are staggered with each other and evenly distributed in the outer coil, and two inner coils of the at least two inner coils are electrically connected with the second port and the third port of the inductive sensor chip respectively.

3. The angle sensor of claim 2, wherein the outer coil is arranged in a plurality of revolutions.

4. The angle sensor of claim 2, wherein the outer coil and the inner coil are each circular.

5. The angle sensor of claim 1 wherein the inductive sensor chip comprises a ZMID520x inductive sensor chip.

6. The angle sensor of claim 1, wherein the conductor is a fan conductor or a plurality of fan conductors.

7. An angle sensor, comprising: the inductive sensor comprises an inductive sensor chip, a group of coils and a conductor, wherein the group of coils and the inductive sensor chip are arranged on a circuit board and are electrically connected, and the conductor is rotatably connected above the group of coils;

the set of coils includes: an outer coil and at least two inner coils;

the outer coil is electrically connected with a first port of the inductive sensor chip;

the at least two inner coils are staggered with each other and are uniformly distributed in the outer coil, and two inner coils of the at least two inner coils are respectively and electrically connected with the second port and the third port of the inductive sensor chip;

the outer-layer coil is rotatably arranged in a plurality of circles;

the outer coil and the inner coil are both circular;

the inductive sensor chip comprises a ZMID520x inductive sensor chip;

the conductor is a fan-shaped conductor or a plurality of fan-shaped conductors.

8. A vehicle, characterized by comprising an angle sensor according to any one of claims 1 to 6.

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