A shockproof posture sensor supporting vehicle-mounted ethernet

Abstract

The utility model relates to a car electronic sensing technical field especially relates to a shockproof attitude sensor of support vehicle-mounted ethernet. Attitude sensor includes shell, control circuit board for realizing attitude sensor function, stretch elastic part, silica gel suspension pad, battery compartment, the shell is respectively through a stretch elastic part with a corner of control circuit board connection at all adjacent side surface junction thereof, every corner of control circuit board is clamped a silica gel suspension pad, the first end of silica gel suspension pad is below control circuit board and leans on the bottom plate of shell, and its second end is above control circuit board and is towards the top plate of shell, so that control circuit board is suspended between the bottom plate and top plate of shell respectively, the battery compartment is embedded in the side of shell, and is electrically connected with control circuit board, so better adapt to the shock environment under the car application scene.

Description

Technical Field

[0001] This utility model relates to the field of automotive electronic sensing technology, and in particular to a vibration-damping attitude sensor that supports in-vehicle Ethernet. Background Technology

[0002] With the rapid development of automotive intelligence and connectivity, vehicles equipped with autonomous driving and smart cockpit functions are generally equipped with attitude sensors. In traditional attitude sensors, the control circuit board used to realize the sensor function is usually fixed to the housing with screws, bolts, or other rigid connections. However, rigid connections are prone to transmitting vibrations. Road bumps and equipment vibrations can be directly transmitted to the control circuit board, causing continuous impact on sensitive MEMS components. Furthermore, rigid connections lack buffer space, and vibration stress can easily accumulate at the connection between the control circuit board and the housing, potentially leading to component loosening or parameter drift, ultimately affecting measurement accuracy.

[0003] Traditional Ethernet suffers from unpredictable transmission latency, failing to meet real-time control requirements. Furthermore, traditional Ethernet typically uses four pairs of twisted-pair cables, resulting in complex and heavy cabling that increases the burden on automotive wiring harnesses and hinders lightweight vehicle design. In contrast, automotive Ethernet achieves efficient and stable data transmission using only two cables.

[0004] Therefore, there is a need for an attitude sensor technology solution that can better adapt to the vibration environment in automotive applications. Utility Model Content

[0005] To solve the above-mentioned technical problems, this utility model provides a vibration-resistant attitude sensor that supports vehicle Ethernet.

[0006] This utility model provides a vibration-damping attitude sensor that supports vehicle Ethernet, including a housing, a control circuit board for realizing the attitude sensor function, a tensile elastic element, a silicone suspension pad, and a battery compartment.

[0007] The housing is connected to a corner of the control circuit board at each of its adjacent side connections via a tension elastic member.

[0008] Each corner of the control circuit board is snapped with a silicone suspension pad;

[0009] The first end of the silicone suspension pad rests against the bottom plate of the housing below the control circuit board, and the second end faces the top plate of the housing above the control circuit board, so that the control circuit board is suspended between the bottom plate and the top plate of the housing respectively.

[0010] The battery compartment is embedded in the side of the outer casing and is electrically connected to the control circuit board.

[0011] In one possible implementation, the tension elastic element is a tension spring.

[0012] In one possible implementation, all adjacent side connections of the housing are hollow cylindrical structures;

[0013] A fixing bolt is provided laterally in the middle of the hollow cylindrical structure;

[0014] The first end of the tension spring is connected to the fixing bolt.

[0015] In one possible implementation, a fixing hole is provided at each corner of the control circuit board;

[0016] The second end of the tension spring is connected to the control circuit board through the fixing hole.

[0017] In one possible implementation, the silicone suspension pad has a slot on the first side of its middle portion and a groove on the second side of its middle portion;

[0018] The slot and the groove are connected;

[0019] The corner of the control circuit board is engaged in the slot and extends into the groove, so that the fixing hole enters the groove.

[0020] In one possible implementation, the battery compartment is a press-type elastic self-locking structure.

[0021] In one possible implementation, the housing includes a housing base and housing end caps;

[0022] The housing end cap is disposed on the top of the housing base.

[0023] In one possible implementation, horizontal bubbles are provided on two adjacent sides of the housing.

[0024] In one possible implementation, the attitude sensor circuit on the control circuit board includes an in-vehicle Ethernet interface module, an MCU control module, an attitude sensor acquisition module, and a power supply module.

[0025] The first and second communication terminals of the MCU control module are electrically connected to the communication terminals of the vehicle Ethernet interface module and the attitude sensor acquisition module, respectively.

[0026] The power supply terminal of the power module is electrically connected to the power supply terminal of the vehicle Ethernet interface module, the power supply terminal of the MCU control module, and the power supply terminal of the attitude sensor acquisition module, respectively.

[0027] The technical solution provided by this utility model has at least the following beneficial effects:

[0028] By incorporating a tensile elastic element and a silicone suspension pad, a flexible connection can be achieved between the housing and the control circuit board, allowing the attitude sensor to better adapt to the vibration environment of automotive applications. A press-type elastic self-locking structure facilitates battery replacement. Employing automotive Ethernet communication, high-speed and stable data transmission can be achieved via two wires. Attached Figure Description

[0029] Figure 1 A cross-sectional structural schematic diagram of a vibration-damping attitude sensor supporting in-vehicle Ethernet provided for an embodiment of this utility model;

[0030] Figure 2 A schematic diagram of the overall structure of a vibration-damping attitude sensor supporting vehicle Ethernet when the cover is opened, provided for an embodiment of this utility model;

[0031] Figure 3 A schematic diagram of the specific structure of the tensile elastic element provided in the embodiment of this utility model;

[0032] Figure 4 A schematic diagram of the structure of the housing base provided in the embodiment of this utility model;

[0033] Figure 5 A schematic diagram illustrating the connection between the tension spring and the fixing bolt provided in an embodiment of this utility model;

[0034] Figure 6 A schematic diagram illustrating the connection between the tension spring and the control circuit board provided in an embodiment of this utility model;

[0035] Figure 7 A cross-sectional structural diagram of the connection between the control circuit board, the tension spring, and the silicone suspension pad provided in an embodiment of this utility model;

[0036] Figure 8 A cross-sectional structural diagram of the contact position between the tension spring and the silicone suspension pad provided in an embodiment of this utility model;

[0037] Figure 9 This is a schematic diagram of the battery compartment provided in an embodiment of the present utility model;

[0038] Figure 10 A schematic diagram of the overall structure of a vibration-damping attitude sensor supporting vehicle Ethernet, shown from another angle when the cover is opened, as provided in an embodiment of this utility model.

[0039] Figure 11 A circuit block diagram of the attitude sensor circuit provided in this embodiment of the utility model;

[0040] In the attached diagram, 10 is the outer casing; 11 is the control circuit board; 12 is the tension elastic element; 13 is the silicone suspension pad; 14 is the battery compartment; 101 is the casing base; 102 is the casing end cap; 103 is the fixing bolt; 104 is the level bubble; 111 is the fixing hole; 131 is the slot; 132 is the groove; 141 is the fixing panel; 142 is the battery slot; 143 is the battery; 144 is the negative electrode metal spring; 145 is the positive electrode metal spring; 146 is the spring; 147 is the separating block; 148 is the pull rod; and 149 is the battery compartment casing. Detailed Implementation

[0041] To enhance understanding of this utility model, it will be described in further detail below with reference to the accompanying drawings and embodiments. These embodiments are only used to explain this utility model and do not limit the scope of protection of this utility model.

[0042] Please refer to Figures 1 to 11 The present invention provides a vibration-damping attitude sensor that supports vehicle Ethernet, including a housing 10, a control circuit board 11 for realizing the attitude sensor function, a tensile elastic element 12, a silicone suspension pad 13, and a battery compartment 14.

[0043] The outer casing 10 is connected to a corner of the control circuit board 11 at each of its adjacent side connections via a tensile elastic member 12;

[0044] Each corner of the control circuit board 11 is snapped with a silicone suspension pad 13;

[0045] The first end of the silicone suspension pad 13 rests against the bottom plate of the housing 10 below the control circuit board 11, and the second end faces the top plate of the housing 10 above the control circuit board 11, so that the control circuit board 11 is suspended between the bottom plate and the top plate of the housing 10 respectively.

[0046] The battery compartment 14 is embedded in the side of the outer casing 10 and is electrically connected to the control circuit board 11.

[0047] In this embodiment, the outer shell 10 can be made of conventional materials, and its specific shape can be determined according to actual implementation needs. The control circuit board 11 is used to implement the function of the attitude sensor, and its specific circuit can adopt the conventional circuit of the attitude sensor. The tensile elastic element 12 can adopt a spring structure. The silicone suspension pad 13 can be made of conventional silicone material, and its specific shape can be selected according to actual implementation needs, such as a cylindrical shape. In specific implementation, an aviation socket can also be provided on the outer shell 10 to facilitate the introduction of external power as the power input of the control circuit board 11 and as a vehicle-mounted Ethernet data communication port. The outer shell 10 can adopt a cuboid-like structure, and its four corners (i.e., the connection between adjacent sides) are flexibly connected to the four corners of the control circuit board 11 through four tensile elastic elements 12. The bottom plate of the lower part and the top plate of the upper part of the outer shell 10 are completely isolated from the upper and lower surfaces of the control circuit board 11 through four silicone suspension pads 13. The silicone suspension pad 13 has a double-layer structure. This invention, by introducing a tensile elastic element 12 and a silicone suspension pad 13, achieves non-rigid contact between the housing 10 and the control circuit board 11, accurately filtering out road bumps and other disturbances, and significantly reducing the impact of vibration on MEMS components. The attitude sensor in this invention combines fixed stability with flexible buffering, preventing excessive shaking of the control circuit board 11 and reducing stress accumulation, thus significantly improving the long-term stability of measurement accuracy. This allows the attitude sensor to better adapt to the vibration environment of automotive applications.

[0048] In one possible implementation, such as Figure 3 The tension elastic element 12 is a tension spring.

[0049] In this embodiment, the tension spring can adopt a conventional spring structure, and the two ends can adopt a hook-shaped or ring-shaped design, which can be determined according to the actual implementation needs.

[0050] In one possible implementation, the tension spring is horizontally positioned.

[0051] In this embodiment, the tension spring and the control circuit board 11 are on the same horizontal plane. When stationary, the vertical component of the tension spring is considered to be zero. When vibrating, the tension spring can generate tension in the vertical direction to buffer the control circuit board 11 and reduce the impact of vibration on the control circuit board 11.

[0052] In one possible implementation, such as Figure 4 and Figure 5 All adjacent side connections of the outer shell 10 are hollow cylindrical structures;

[0053] A fixing bolt 103 is provided laterally in the middle of the hollow columnar structure;

[0054] The first end of the tension spring is connected to the fixing bolt 103.

[0055] In this embodiment, the fixing bolt 103 can be a conventional type of bolt. The fixing bolt 103 can pass through the outer side of the hollow cylindrical structure from one side to the other. The first end of the tension spring can be hook-shaped or ring-shaped.

[0056] In one possible implementation, such as Figure 6 Each corner of the control circuit board 11 is provided with a fixing hole 111;

[0057] The second end of the tension spring is connected to the control circuit board 11 through the fixing hole 111.

[0058] In one possible implementation, such as Figure 7 and Figure 8 The silicone suspension pad 13 has a slot 131 on the first side of its middle part and a groove 132 on the second side of its middle part.

[0059] The slot 131 and the groove 132 are connected;

[0060] The corner of the control circuit board 11 is engaged in the slot 131 and extends into the groove 132, so that the fixing hole 111 enters the groove 132.

[0061] In one possible implementation, such as Figure 2 and Figure 9 The battery compartment 14 has a press-type elastic self-locking structure.

[0062] In one specific embodiment, the battery compartment 14 includes a fixing panel 141, a battery slot 142, a battery 143, a negative electrode metal spring 144, a positive electrode metal spring 145, a spring 146, a separating block 147, a pull rod 148, and a battery compartment housing 149. The fixing panel 141 of the battery compartment 14 is fixedly disposed on the side of the housing 10, with the remaining portion extending into the housing 10. When replacing the battery 143, it is not necessary to disassemble the housing 10; the battery slot 142 carrying the battery 143 can pop out from the opening of the fixing panel 141. When the battery slot 142 is pressed into the battery compartment 14, the positive electrode of the battery 143 is electrically connected to the positive electrode metal spring 145, and the negative electrode of the battery 143 is electrically connected to the negative electrode metal spring 144. The negative electrode metal spring 144 and the positive electrode metal spring 145 are electrically connected to the backup power interface of the control circuit board 11 via a power cord. The main power supply (which can be provided by an aviation socket) and backup power supply of the control circuit board 11 can be implemented based on a conventional power switching circuit or an existing power switching chip. The specific choice can be made according to actual needs.

[0063] In one possible implementation, the housing 10 includes a housing base 101 and a housing end cap 102;

[0064] The housing end cap 102 is disposed on the top of the housing base 101.

[0065] In this embodiment, the base plate of the housing base 101 serves as the base plate of the lower part of the housing 10, and the housing end cap 102 serves as the top plate of the upper part of the housing 10.

[0066] In one possible implementation, such as Figure 10 A horizontal bubble 104 is provided on the side of the outer shell 10.

[0067] In this embodiment, the level bubble 104 can be a common long water bubble. In specific implementation, a level bubble 104 can be provided on each adjacent side of the housing 10. By providing level bubbles 104 on the sides of the housing 10, it can be ensured that the attitude sensor is in a horizontal state when it is installed, thereby improving the accuracy of the measurement data when the attitude sensor is working.

[0068] In one possible implementation, the control circuit board 11 supports in-vehicle Ethernet communication, eliminating the need for additional gateway converters and reducing external wiring ports. Furthermore, compared to traditional Ethernet, in-vehicle Ethernet offers more stable transmission; while requiring eight wires, it only needs one set (two) of cables to achieve high-speed data transmission.

[0069] In one possible implementation, such as Figure 11 The attitude sensor circuit on the control circuit board 11 includes an in-vehicle Ethernet interface module, an MCU control module, an attitude sensor acquisition module, and a power supply module.

[0070] The first and second communication terminals of the MCU control module are electrically connected to the communication terminals of the vehicle Ethernet interface module and the attitude sensor acquisition module, respectively.

[0071] The power supply terminal of the power module is electrically connected to the power supply terminal of the vehicle Ethernet interface module, the power supply terminal of the MCU control module, and the power supply terminal of the attitude sensor acquisition module, respectively.

[0072] In this embodiment, the vehicle Ethernet interface module can be implemented based on conventional circuitry or directly utilize existing modules. The MCU control module communicates with the vehicle Ethernet interface module via RMII. The MCU control module communicates with the attitude sensor acquisition module via IIC. The specific power supply module can be implemented based on a DC-DC isolation unit, a DC / DC buck unit, and a reference voltage source unit. The specific circuits of the DC-DC isolation unit, DC / DC buck unit, and reference voltage source unit can all be implemented based on existing conventional circuitry. The input terminal of the DC-DC isolation unit serves as the power input, and its output terminal connects to the DC / DC buck unit and the reference voltage source unit. The DC / DC buck unit provides digital power to the MCU control module and the vehicle Ethernet module. The reference voltage source unit provides a highly stable voltage source (analog power) to power the attitude sensor acquisition module. The attitude sensor acquisition module includes an attitude sensor unit, a filtering unit, and an A / D conversion unit. The output signal of the attitude sensor unit is transmitted to the A / D conversion unit through the filtering unit. After A / D conversion, the data is transmitted via the IIC bus. The MCU control module includes a download unit, a reset unit, a crystal oscillator unit, and the MCU itself.

[0073] The above embodiments should not limit the present invention in any way. All technical solutions obtained by equivalent substitution or equivalent conversion fall within the protection scope of the present invention.

Claims

1. A vibration-damping attitude sensor supporting in-vehicle Ethernet, characterized in that, Includes a housing, a control circuit board for implementing the attitude sensor function, a tensile elastic element, a silicone suspension pad, and a battery compartment; The housing is connected to a corner of the control circuit board at each of its adjacent side connections via a tension elastic member. Each corner of the control circuit board is snapped with a silicone suspension pad; The first end of the silicone suspension pad rests against the bottom plate of the housing below the control circuit board, and the second end faces the top plate of the housing above the control circuit board, so that the control circuit board is suspended between the bottom plate and the top plate of the housing respectively. The battery compartment is embedded in the side of the outer casing and is electrically connected to the control circuit board.

2. The attitude sensor according to claim 1, characterized in that, The tension elastic element is a tension spring.

3. The attitude sensor according to claim 2, characterized in that, All adjacent side connections of the outer shell are hollow cylindrical structures; A fixing bolt is provided laterally in the middle of the hollow cylindrical structure; The first end of the tension spring is connected to the fixing bolt.

4. The attitude sensor according to claim 2, characterized in that, Each corner of the control circuit board is provided with a fixing hole; The second end of the tension spring is connected to the control circuit board through the fixing hole.

5. The attitude sensor according to claim 4, characterized in that, The silicone suspension pad has a slot on the first side of its middle section and a groove on the second side of its middle section. The slot and the groove are connected; The corner of the control circuit board is engaged in the slot and extends into the groove, so that the fixing hole enters the groove.

6. The attitude sensor according to claim 1, characterized in that, The battery compartment has a press-type elastic self-locking structure.

7. The attitude sensor according to claim 1, characterized in that, The outer casing includes a casing base and casing end caps; The housing end cap is disposed on the top of the housing base.

8. The attitude sensor according to claim 1, characterized in that, Horizontal bubbles are provided on two adjacent sides of the outer casing.

9. The attitude sensor according to claim 1, characterized in that, The attitude sensor circuit on the control circuit board includes an in-vehicle Ethernet interface module, an MCU control module, an attitude sensor acquisition module, and a power supply module. The first and second communication terminals of the MCU control module are electrically connected to the communication terminals of the vehicle Ethernet interface module and the attitude sensor acquisition module, respectively. The power supply terminal of the power module is electrically connected to the power supply terminal of the vehicle Ethernet interface module, the power supply terminal of the MCU control module, and the power supply terminal of the attitude sensor acquisition module.

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