Inductance type angle sensor structure
By designing a redundant inductive angle sensor structure using gears and metal teeth, the problems of sensors prone to failure and insufficient measurement accuracy in harsh environments in the prior art are solved, and higher accuracy and reliability are achieved.
Patent Information
- Application Number
- CN202420728278.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-10
- Publication Date
- 2025-03-07
- Estimated Expiration
- 2034-04-10
AI Technical Summary
Existing inductive angle sensors are prone to failure in harsh environments, with single measurement value output and insufficient dynamic measurement accuracy, resulting in low accuracy and reliability.
An inductive angle sensor structure is designed, using two sets of intermeshed gears and metal teeth to drive the gears to rotate the magnetic induction wires of the cutting coil through the gears to realize signal transmission. The structure adopts a redundant design, and there are two independent systems that can still be used when one system fails.
Through redundant design and gear rack structure, the accuracy and reliability of the sensor are improved, and high-precision measurements can be maintained in harsh environments and automatically switch to another system when one system fails, ensuring the stability and reliability of the system.
Smart Images
Figure CN222579193U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of angle sensors, in particular to an inductive angle sensor structure. Background Art
[0002] As the market competition of magnetic angle sensors becomes increasingly fierce, the accuracy and reliability of inductive angle sensors play a key role. How to further improve the accuracy and reliability of inductive angle sensors is the primary problem that manufacturers need to solve. With the great increase in the output of inductive angle sensors, higher requirements are put forward for the accuracy and reliability of products.
[0003] Existing inductive angle sensors have the following problems: the angle sensors used in automotive products are generally used in the chassis or brake positions. The working environment is relatively harsh and the probability of sensor failure is high; the measurement value output of the sensor is relatively single and cannot be compared and integrated, the measurement results obtained are not accurate enough, and the dynamic measurement accuracy is insufficient. Utility Model Content
[0004] The purpose of the utility model is to provide an inductive angle sensor structure to solve the problems raised in the above background technology.
[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an inductive angle sensor structure, comprising a sensor base, an interface 1, an interface 2, an active seat and a driven seat, wherein the interface 1 and the interface 2 are an integrated structure with the sensor base and are arranged on the upper part of the sensor base, and the active seat and the driven seat are arranged on the lower part of the sensor base; a driving gear is arranged on the active seat, and a driven gear is installed on the driven seat, and the driving gear and the driven gear are meshed with each other; a PCBA board is arranged inside the sensor base, and two groups of coils are arranged on the PCBA board, and the two groups of coils are respectively located on the upper part of the driving gear and the driven gear; a metal tooth piece 1 is arranged on the surface of the driving gear, and a metal tooth piece 2 is arranged on the surface of the driven gear; the two groups of coils are respectively electrically connected to independent control chips, and the two groups of control chips are respectively connected to external controllers through the interface 1 and the interface 2.
[0006] Preferably, the metal tooth plate 1 and the metal tooth plate 2 are annular structures as a whole, and the metal tooth plate 1 and the driving gear are concentric structures, and the metal tooth plate 2 and the driven gear are concentric structures.
[0007] Preferably, the metal tooth plate 1 and the metal tooth plate 2 are both made of copper sheets, and a plurality of groups of racks are evenly arranged on the annular outer sides of the metal tooth plate 1 and the metal tooth plate 2, and the cross-section of the racks is a square structure.
[0008] Preferably, the active seat and the driven seat are of an integrated structure, and the sensor base, the first interface, the second interface, the active seat and the driven seat are all made of plastic material.
[0009] Compared with the prior art, the beneficial effects of the utility model are as follows: the utility model achieves the effect of transmitting signals by setting two sets of meshing gears, and driving the gears to rotate the gears to cut the magnetic induction lines of the coil; the device structure is compactly designed, the overall product structure is simple, and the installation space is small. BRIEF DESCRIPTION OF THE DRAWINGS
[0010] Figure 1 The structure of the utility model is shown in FIG. Figure 1 ;
[0011] Figure 2 The structure of the utility model is shown in FIG. Figure 2 ;
[0012] Numbers in the figure: 1, sensor base; 2, interface 1; 3, interface 2; 4, active seat; 5, driven seat; 6, active gear; 7, driven gear; 8, metal gear piece 1; 9, metal gear piece 2. DETAILED DESCRIPTION
[0013] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0014] In the description of the present invention, it should be noted that the terms "vertical", "up", "down", "horizontal", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do 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 therefore cannot be understood as a limitation on the present invention.
[0015] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0016] See also Figure 1-2 The utility model provides a technical solution: an inductive angle sensor structure, including a sensor base 1, an interface 1 2, an interface 2 3, an active seat 4 and a driven seat 5, wherein the interface 1 2, the interface 2 3 and the sensor base 1 are an integrated structure and are arranged on the upper part of the sensor base 1, and the active seat 4 and the driven seat 5 are arranged on the lower part of the sensor base 1; a driving gear 6 is arranged on the active seat 4, and a driven gear 7 is installed on the driven seat 5, and the driving gear 6 and the driven gear 7 are meshed with each other; a PCBA board is arranged inside the sensor base 1, and two groups of coils are arranged on the PCBA board, and the two groups of coils are respectively located on the upper part of the driving gear 6 and the driven gear 7; a metal tooth piece 1 8 is arranged on the surface of the driving gear 6, and a metal tooth piece 2 9 is arranged on the surface of the driven gear 7; the two groups of coils are respectively electrically connected to independent control chips, and the two groups of control chips are respectively connected to external controllers through the interface 1 2 and the interface 2 3.
[0017] Furthermore, the metal tooth plate 1 8 and the metal tooth plate 2 9 are annular structures as a whole, and the metal tooth plate 1 8 and the driving gear 6 are concentric structures, and the metal tooth plate 2 9 and the driven gear 7 are concentric structures.
[0018] Furthermore, the metal tooth plate 1 8 and the metal tooth plate 2 9 are both made of copper sheets, and a plurality of groups of racks are evenly arranged on the annular outer sides of the metal tooth plate 1 8 and the metal tooth plate 2 9, and the cross-section of the racks is a square structure.
[0019] Furthermore, the active seat 4 and the driven seat 5 are an integrated structure, and the sensor base 1, the interface 1 2, the interface 2 3, the active seat 4, and the driven seat 5 are all made of plastic materials.
[0020] Working principle: The angle sensor structure of this scheme adopts a redundant design, and there are two independent systems; the detected rotating shaft is connected to the active gear 6 through the active seat 4, and the rotation of the detected rotating shaft can drive the active gear 6 to rotate; the metal tooth piece 1 8 is set on the active gear 6, and when the active gear 6 rotates, it drives the metal tooth piece 1 8 to rotate, and at the same time drives the driven gear 7 to rotate, and then drives the metal tooth piece 2 9 to rotate, ensuring that the metal tooth piece 1 8 and the metal tooth piece 2 9 rotate synchronously; there are two sets of independent coils on the PCBA board in the sensor base 1 directly above the metal tooth piece 1 8 and the metal tooth piece 2 9, and the tooth piece rotates to cut the magnetic flux line and generate induced current; the control chip connected to the coil receives the current change, and after signal processing, the output signal is transmitted to the external controller through the connector connected to the interface 1 2 and the interface 2 3. The external controller processes and calculates the two sets of signals to verify each other and make corresponding responses.
[0021] The inductive angle sensor receives signals from two independent external metal teeth, which are processed by two independent circuit chips and then sent to the controller through two separate connectors. This can not only calibrate the accuracy of the sensor's self-signal, but also ensure that when one system fails, the other system can still be used, thereby greatly improving the accuracy and reliability of the sensor.
[0022] It is worth noting that the entire device is controlled by a main control button. Since the device matched with the control button is a common device and belongs to the existing mature technology, its electrical connection relationship and specific circuit structure will not be described in detail here.
[0023] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. An inductive angle sensor structure, characterized in that: The sensor base (1) comprises a sensor base (1), an interface 1 (2), an interface 2 (3), an active seat (4) and a driven seat (5); the interface 1 (2), the interface 2 (3) and the sensor base (1) are an integrated structure and are arranged on the upper part of the sensor base (1); the active seat (4) and the driven seat (5) are arranged on the lower part of the sensor base (1); a driving gear (6) is arranged on the active seat (4), a driven gear (7) is installed on the driven seat (5), and the active gear (6) and the driven gear (7) are connected to each other. (7) are meshed with each other; a PCBA board is arranged inside the sensor base (1), and two groups of coils are arranged on the PCBA board, and the two groups of coils are respectively located on the upper part of the driving gear (6) and the driven gear (7); a metal tooth piece 1 (8) is arranged on the surface of the driving gear (6), and a metal tooth piece 2 (9) is arranged on the surface of the driven gear (7); the two groups of coils are respectively electrically connected to independent control chips, and the two groups of control chips are respectively connected to an external controller through an interface 1 (2) and an interface 2 (3).
2. The inductive angle sensor structure according to claim 1, characterized in that: The metal tooth plate 1 (8) and the metal tooth plate 2 (9) are in an annular structure as a whole, and the metal tooth plate 1 (8) and the driving gear (6) are in a concentric structure, and the metal tooth plate 2 (9) and the driven gear (7) are in a concentric structure.
3. The inductive angle sensor structure according to claim 1, characterized in that: The metal tooth piece 1 (8) and the metal tooth piece 2 (9) are both made of copper sheets. A plurality of groups of racks are evenly arranged on the annular outer sides of the metal tooth piece 1 (8) and the metal tooth piece 2 (9). The cross section of the rack is a square structure.
4. The inductive angle sensor structure according to claim 1, characterized in that: The active seat (4) and the driven seat (5) are of an integrated structure, and the sensor base (1), the first interface (2), the second interface (3), the active seat (4) and the driven seat (5) are all made of plastic material.