Automobile air bag restraint system controller integrated with inertial measurement unit and automobile

Abstract

The invention discloses an automobile safety air bag controller integrated with an inertial measurement unit and an automobile, and belongs to the technical field of vehicle-mounted inertial sensors, the controller comprises a shell, the inertial measurement unit, a circuit board assembly and a bottom plate; the shell comprises an embedded mounting block and a plastic shell; the plastic shell is connected with the bottom plate, a mounting block mounting groove is formed in the plastic shell, and the embedded mounting block is located in the mounting block mounting groove and connected with the plastic shell; a plurality of mounting columns and a plurality of positioning walls are arranged on the embedded mounting block; the inertial measurement unit is placed on the upper surfaces of the plurality of mounting columns and is fixedly connected with the mounting columns, a mounting space of the inertial measurement unit is defined by the plurality of positioning walls, and the inertial measurement unit is located in the mounting space; the inertial measurement unit is connected with the circuit board assembly; and the circuit board assembly is fixed between the plastic shell and the bottom plate. The technical problem that the measurement precision of the inertial measurement unit is affected due to the fact that the inertial measurement unit is prone to deformation and vibration is solved, and the measurement precision of the inertial measurement unit is improved.

Description

Technical Field

[0001] This invention relates to the field of vehicle inertial sensor technology, and in particular to an automotive airbag controller and an automotive vehicle with an integrated inertial measurement unit. Background Technology

[0002] To achieve high-precision and high-reliability positioning and attitude calculation, a combination of inertial measurement units (i.e., high-precision IMUs) and global navigation satellite systems (GNSS) is usually used to form a high-precision navigation system. In this system, the inertial measurement unit is used to measure and calculate the relative displacement, velocity and attitude of the vehicle. Therefore, the installation location and mounting carrier of the inertial measurement unit are particularly important.

[0003] In related technologies, in order to improve the accuracy of inertial measurement unit (IMU) in measuring vehicle positioning and attitude, the IMU is integrated into the airbag controller, and the IMU is directly connected to the housing of the airbag controller by screws.

[0004] In related technologies, the connection method between the inertial measurement unit and the housing is such that the inertial measurement unit is prone to deformation and vibration during use, which affects the measurement accuracy of the inertial measurement unit. Summary of the Invention

[0005] To address the aforementioned issues, this invention proposes an automotive airbag controller and an automotive vehicle with an integrated inertial measurement unit (IMU), which improves the installation strength of the IMU, prevents vibration of the IMU, and thereby improves the measurement accuracy of the IMU.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: On one hand, the present invention provides an automotive airbag controller with an integrated inertial measurement unit, comprising: a housing, an inertial measurement unit, a circuit board assembly, and a base plate; The housing includes an embedded mounting block and a plastic shell; the plastic shell is connected to the base plate, and a mounting slot for the mounting block is provided inside the plastic shell. The embedded mounting block is located in the mounting slot of the mounting block and is connected to the plastic shell. Multiple mounting posts and multiple positioning walls are set on the embedded mounting block; the inertial measurement unit is placed on the upper surface of the multiple mounting posts and fixedly connected to the mounting posts; the multiple positioning walls enclose the mounting space of the inertial measurement unit, and the inertial measurement unit is located in the mounting space. The inertial measurement unit is connected to the circuit board assembly; the circuit board assembly is fixed between the plastic housing and the base plate.

[0007] Furthermore, a T-shaped post is provided on the plastic shell, and a stepped through hole is provided on the embedded mounting block; the large end of the T-shaped post is located in the large hole of the stepped through hole; the small end of the T-shaped post is located in the small hole of the stepped through hole, and the small end of the T-shaped post is connected to the plastic shell.

[0008] Furthermore, multiple positioning grooves are provided on the embedded mounting block; multiple filling bosses that fit the positioning grooves are provided on the plastic shell; the multiple filling bosses are connected to the multiple positioning grooves one by one.

[0009] Furthermore, a mold positioning hole is provided on the embedded mounting block, and a positioning blind hole is provided on the plastic shell; the positioning hole and the positioning blind hole are coaxially arranged.

[0010] Furthermore, an annular flange is provided in the embedded mounting block, and an annular embedding groove is provided on the groove wall of the mounting block mounting groove, with the edge of the annular flange embedded in the annular embedding groove.

[0011] Furthermore, a reinforcing rib is provided inside the plastic shell, which divides the interior of the plastic shell into an inertial measurement unit mounting area and other areas; the mounting block mounting slot is provided in the inertial measurement unit mounting area.

[0012] Furthermore, a wire harness groove is provided on the plastic shell reinforcing rib; one end of the connecting wire is connected to the inertial measurement unit, and the other end of the connecting wire passes through the wire harness groove and is connected to the circuit board assembly.

[0013] Furthermore, the connecting wire is connected to the wire harness groove via a wire harness clip.

[0014] Furthermore, reinforcing ribs are installed between multiple mounting columns.

[0015] On the other hand, the present invention also provides an automobile, including an automobile airbag controller with an integrated inertial measurement unit provided by the present invention.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: This invention proposes an integrated inertial measurement unit (IMU) automotive airbag controller and an automotive vehicle. The airbag controller has a mounting slot within a plastic housing. An embedded mounting block is installed within this slot, with the slot wall providing a limiting effect. Multiple mounting posts and positioning walls are provided on the embedded mounting block. The mounting posts provide a mounting plane for the IMU, ensuring no deformation occurs when the IMU is connected to the mounting posts. The positioning walls enclose the mounting space for the IMU, providing lateral positioning and preventing offset and rotation, effectively improving the installation accuracy and ensuring the measurement accuracy of the IMU.

[0017] Advantages of additional aspects of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0018] The accompanying drawings, which form part of this invention, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an improper limitation of the invention.

[0019] Figure 1 This is an exploded view of the overall structure of an automotive airbag controller with an integrated inertial measurement unit proposed in this invention. Figure 2 This is an exploded view of the shell structure proposed in this invention; Figure 3 This is an overall structural diagram of the embedded mounting block proposed in this invention; Figure 4 This is a rear view of the embedded mounting block proposed in this invention; Figure 5 This is a diagram of the plastic shell structure proposed in this invention; Figure 6 This is a structural diagram of the shell proposed in this invention; Figure 7 for Figure 6 A schematic diagram of the AA cross-section; Figure 8 This is an integrated diagram of the inertial measurement unit and housing proposed in this invention; Figure 9 for Figure 8 A magnified view of a section at point B.

[0020] Among them, 1. housing, 2. inertial measurement unit, 3. self-tapping screw, 4. connecting wire, 5. circuit board assembly, 6. base plate, 7. screw; 101. Embedded mounting block; 102. Plastic shell; 101a, mold positioning hole; 101b, stepped through hole; 101c, positioning wall; 101d, annular flange; 101e, mounting post; 101f, mounting post reinforcing rib; 101g, positioning groove. 102a, Positioning blind hole; 102b, T-shaped post; 102c, Filling boss; 102d, Groove wall; 102e, Wire harness groove; 102f, Wire harness clip; 102g, Plastic shell reinforcing rib. Detailed Implementation

[0021] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0022] It should be noted that the following detailed descriptions are illustrative and intended to provide further explanation of this application. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0023] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0024] In this invention, terms such as "upper," "lower," "left," "right," "front," "back," "vertical," "horizontal," "side," and "bottom" indicate orientation or positional relationships only for the convenience of describing the structural relationships of the various components or elements of this invention. They do not specifically refer to any component or element in this invention and should not be construed as limiting the invention.

[0025] In this invention, terms such as "fixed connection," "connected," and "linked" should be interpreted broadly, indicating a fixed connection, an integral connection, or a detachable connection; a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can determine the specific meaning of these terms in this invention based on the specific circumstances, and they should not be construed as limitations on the invention.

[0026] With the development of technology, cars are evolving from simple means of transportation into highly intelligent mobile terminals, and intelligent driving is becoming more and more popular. Therefore, high-precision navigation systems have become an indispensable part of intelligent driving.

[0027] To achieve high-precision and high-reliability positioning and attitude calculation, a combination of inertial measurement units (i.e., high-precision IMUs) and global navigation satellite systems (GNSS) is usually used to form a high-precision navigation system. The inertial measurement unit is used to measure and calculate the relative displacement, velocity and attitude of the vehicle. Therefore, the installation location and mounting carrier of the inertial measurement unit are particularly important.

[0028] There are generally two ways to configure inertial measurement units (IMUs): one is to develop a separate inertial navigation assembly and integrate the IMU into it. However, this method of developing a separate assembly requires a significant investment of development resources (new mold development, new assembly line development, etc.). At the same time, the OEM also needs to install this assembly on the vehicle body, which occupies additional vehicle space and increases installation costs (installation time and fasteners). Therefore, it brings significant additional costs to both the development and user sides. The other method is to integrate the IMU into the ADAS ECU. However, the ADAS ECU is often installed in the rear seat area or trunk area of ​​the vehicle, which is far from the center of the vehicle. Moreover, the installation area often lacks rigidity, which will affect the positioning and attitude measurement accuracy of the IMU.

[0029] Due to the inherent requirements of airbag controllers, they occupy the optimal position on the vehicle body (close to the center of the vehicle, and with good rigidity in the mounting area). In order to improve the measurement accuracy of the inertial measurement unit for vehicle positioning and attitude, and at the same time avoid developing an additional assembly to reduce the investment costs on both the development and application sides, a technical solution has emerged in the market that integrates the inertial measurement unit into the airbag controller.

[0030] However, currently, when integrating inertial measurement units (IMUs) into airbag controllers, the IMUs are simply connected directly to the airbag controller housing using screws. During use, the IMUs are prone to deformation and vibration, which affects their measurement accuracy.

[0031] To improve the installation strength and accuracy of the inertial measurement unit (IMU) in an airbag controller, and to prevent deformation and vibration of the IMU during installation and use, thereby improving the detection accuracy and stability of the IMU, this invention proposes an automotive airbag controller integrating an IMU, such as... Figure 1 As shown, it includes: housing 1, inertial measurement unit 2, circuit board assembly 5, and base plate 6; like Figure 2 As shown, the housing 1 includes an embedded mounting block 101 and a plastic shell 102; the plastic shell 102 is connected to the base plate 6, and a mounting block mounting groove is provided inside the plastic shell 102. The embedded mounting block 101 is located in the mounting block mounting groove and is connected to the plastic shell 102. like Figure 3 As shown, multiple mounting posts 101e and multiple positioning walls 101c are provided on the embedded mounting block 101; the inertial measurement unit is placed on the upper surface of the multiple mounting posts 101e and fixedly connected to the mounting posts 101e; the multiple positioning walls 101c enclose the mounting space of the inertial measurement unit 2, and the inertial measurement unit 2 is located in the mounting space. The inertial measurement unit 2 is connected to the circuit board assembly 5; the circuit board assembly 5 is fixed between the plastic shell 102 and the base plate 6.

[0032] This invention improves the installation accuracy of the inertial measurement unit (IMU) by providing an installation slot within the plastic shell 102, and installing the embedded installation block 101 within the slot. The slot wall provides a limit for the embedded installation block 101, preventing rotation and displacement. Multiple installation posts 101e and multiple positioning walls 101c are provided on the embedded installation block 101. The installation posts 101e provide an installation plane for the IMU, ensuring no deformation occurs when the IMU is connected to the installation posts 2. The positioning walls 101c enclose the installation space of the IMU 2, providing lateral positioning and preventing offset and rotation. This effectively improves the installation accuracy of the IMU 2 and ensures its measurement accuracy and stability.

[0033] like Figure 3 , Figure 5 As shown, a T-shaped post 102b is provided on the plastic shell 102, and a stepped through hole 101b is provided on the embedded mounting block 101; the large end of the T-shaped post 102b is located in the large hole of the stepped through hole 101b; the small end of the T-shaped post 102b is located in the small hole of the stepped through hole 101b, and the small end of the T-shaped post 102b is connected to the plastic shell 102.

[0034] In some embodiments, three T-shaped posts 102b are provided on the plastic shell 102, and three stepped through holes 101b are provided on the embedded mounting block 101. The three T-shaped posts 102b and the three stepped through holes 101b are arranged in a triangular pattern. The cooperation between the T-shaped posts 102b and the stepped through holes 101b enhances the lateral bonding shear force and longitudinal pull-out holding force that the embedded mounting block 101 and the plastic shell 102 can withstand.

[0035] In some embodiments, the embedded mounting block 101 is provided with a plurality of positioning grooves 101g; the plastic shell is provided with a plurality of filling bosses 102c adapted to the positioning grooves 101g; the plurality of filling bosses 102c are connected to the plurality of positioning grooves 101g in a one-to-one correspondence.

[0036] The multiple positioning grooves 101g and multiple filling protrusions 102c are arranged in multiple rows, and the multiple rows of positioning grooves 101g and filling protrusions 102c are staggered. Through the cooperation of multiple positioning grooves 101g and multiple filling protrusions 102c, the bonding area between the embedded mounting block 101 and the plastic shell 102 is increased, thereby improving the bonding effect between the mounting block 101 and the plastic shell 102.

[0037] In some embodiments, an annular flange 101d is provided in the embedded mounting block 101, and an annular embedding groove is provided on the groove wall 102d of the mounting block mounting groove. The edge of the annular flange 101d is embedded in the annular embedding groove, which greatly enhances the lateral bonding shear force and longitudinal pull-out holding force that the embedded mounting block 101 and the plastic shell 102 can withstand.

[0038] In some embodiments, six positioning walls 101c are provided on the embedded mounting block 101. The positioning walls 101c are reinforced and supported by triangular reinforcing ribs to improve their strength. Four of the positioning walls 101c are arranged opposite each other on both sides of the inertial measurement unit 2, and the other two positioning walls 101c are arranged opposite each other on the other two sides of the inertial measurement unit 2. The six positioning walls 101c are used for precise positioning of the inertial measurement unit 2 when it is installed into the housing 1, ensuring that the inertial measurement unit 2 does not shift or rotate during assembly, thereby ensuring the measurement accuracy after product assembly.

[0039] Three mounting posts 101e are provided on the embedded mounting block 101. The three screw posts 101e can provide a flat mounting surface, which can avoid strain caused by uneven mounting surface when tightening screws during the assembly of the inertial measurement unit 2, thus ensuring the measurement accuracy of the inertial measurement unit 2 after installation. Mounting post reinforcing ribs 101f are provided between the multiple mounting posts 101e. The mounting post reinforcing ribs 101f connect the three mounting posts 101e, which not only enhances the strength of the mounting posts 101e, but also enhances the overall rigidity of the embedded mounting block 101, thereby avoiding strain caused by deformation due to insufficient rigidity, and ensuring the measurement accuracy of the inertial measurement unit 2 after installation.

[0040] The inertial measurement unit 2 is fixed to the mounting surface of the three mounting posts 101e by self-tapping screws 3. Specifically, a light hole is provided at one end of the mounting post 101e. When assembling the inertial measurement unit 2 and tightening it with the self-tapping screws 3, the self-tapping screws 3 are used to tap into the light hole of the mounting post 101e to form a thread, which ensures sufficient pre-tightening force and anti-loosening effect. The light hole design also saves costs compared to pre-tapping threads.

[0041] In some embodiments, a plastic shell reinforcing rib 102g is provided inside the plastic shell 102, which divides the interior of the plastic shell 102 into an inertial measurement unit mounting area and other areas. A mounting block mounting slot is provided in the inertial measurement unit mounting area, and the inertial measurement unit 2 is mounted in the inertial measurement unit mounting area. The inertial measurement unit 2 is communicatively connected to the circuit board assembly 5 through a connecting line 4, and one end of the connecting line 4 connected to the circuit board assembly 5 is located in the other areas, while the other end of the connecting line 4 connected to the inertial measurement unit 2 is located in the inertial measurement unit mounting area.

[0042] By dividing the plastic shell 102 into left and right parts by using the plastic shell reinforcing rib 102g, the overall rigidity of the installation area of ​​the inertial measurement unit 2 can be effectively improved.

[0043] In some embodiments, a wire harness groove 102e is provided on the plastic shell reinforcing rib 102g; one end of the connecting wire 4 is connected to the inertial measurement unit 2, and the other end of the connecting wire 4 passes through the wire harness groove 102e and is connected to the circuit board assembly 5.

[0044] The connecting wire 4 is connected to the wire harness groove 102e via wire harness clips 102f and 102e, respectively. The wire harness clips 102f consist of two opposing clips, which, together with the wire harness groove 102e, constrain the connecting wire 4 and define its routing within the controller. Figure 8 and Figure 9 As shown, the working principle of the wire harness groove 102e and wire harness clip 102f assembly is as follows: When the connecting wire 4 is pressed down and passes through the wire harness clip 102f, during the pressing process, the two wire harness clips 102f will open to both sides. After the connecting wire 4 passes through, the two wire harness clips 102f will rebound and return to their original positions, playing a limiting role in the longitudinal direction. After the connecting wire 4 is pressed down into place, it will fall into the wire harness groove 102e, thereby limiting the direction of the wire harness.

[0045] In some embodiments, the embedded mounting block 101 is made of die-cast aluminum, and the plastic shell 102 is made of engineering plastic. The embedded mounting block 101 and the plastic shell 102 are integrally injection molded: the embedded mounting block 101 is placed into the injection mold, and then when the plastic shell 102 is injected, the plastic material will wrap around the embedded mounting block 101; the embedded mounting block 101 and the plastic shell 102 are respectively designed with features that enhance the bonding strength, which greatly improves the bonding strength between the two.

[0046] The inertial measurement unit 2 is highly sensitive to assembly strain caused by screw tightening during assembly and micro-deformation strain caused by vehicle vibration and torsion during vehicle operation. All of these strains affect the measurement accuracy of the inertial measurement unit 2. The embedded mounting block 101 effectively solves these problems: the die-cast aluminum embedded mounting block 101 provides a flat mounting surface and good rigidity, thus avoiding strain caused by deformation due to uneven mounting surfaces or insufficient rigidity during the assembly of the self-tapping screws 3, ensuring the measurement accuracy of the inertial measurement unit 2 after installation. Simultaneously, during product application, the die-cast aluminum embedded mounting block 101 ensures good rigidity in the mounting area of ​​the inertial measurement unit 2, solving the problem of micro-deformation caused by insufficient rigidity of traditional plastic parts during application, ensuring the measurement accuracy of the inertial measurement unit 2 during use. Furthermore, the integrated injection molding of the embedded mounting block 101 and the plastic shell 102, with a localized die-cast aluminum design in the mounting area of ​​the inertial measurement unit 2, significantly saves material costs and achieves lightweight design compared to using die-cast aluminum for the entire shell.

[0047] To ensure injection molding accuracy, a mold positioning hole 101a is provided on the embedded mounting block 101, and a positioning blind hole 102a is provided on the plastic shell 102; the positioning hole 101a and the positioning blind hole 102a are coaxially arranged.

[0048] like Figure 3 and Figure 4 As shown, the embedded mounting block 101 includes functional features such as 101a-101g. 101a consists of two mold positioning holes for precise positioning of the embedded mounting block 101 when it is placed into the injection mold during the production of the housing 1. The two mold positioning holes 101a employ a design of one large hole and one small hole, effectively preventing the embedded mounting block 101 from being placed backwards during injection molding. After injection molding, a positioning blind hole 102a will be formed on the plastic housing 102 at the position corresponding to the mold positioning holes 101a. 101b consists of three stepped through holes. After injection molding, the stepped through holes 101b will be covered and encased in plastic, forming a plastic T-shaped post 102b. This T-shaped post is similar in shape to a rivet. The T-shaped post 102b and the plastic joining hole 101b are tightly joined together, greatly enhancing the ability of the embedded mounting block 101 and the plastic housing 102 to withstand lateral shear forces and longitudinal pull-out holding forces. Figure 7 The illustration shows the bonding effect of the embedded mounting block 101 and the plastic shell 102 after integral injection molding. 101c consists of six positioning walls used for precise positioning of the inertial measurement unit 2 when it is installed into the shell 1, ensuring that the inertial measurement unit 2 does not shift or rotate during assembly, thus guaranteeing the measurement accuracy after product assembly. 101d is an annular flange. After the shell is injection molded, the annular flange 101d is covered with plastic, forming an annular covering plastic, i.e., the groove wall 102d of the mounting block mounting slot. The groove wall 102d and the annular flange 101d are tightly bonded together, greatly enhancing the ability of the embedded mounting block 101 and the plastic shell 102 to withstand lateral bonding shear forces and longitudinal pull-out holding forces. Figure 7 The illustration shows the combined effect of the embedded mounting block 101 and the plastic shell 102 after integral injection molding. 101e consists of three mounting posts. When assembling the inertial measurement unit 2, the three self-tapping screws 3 are used for tightening. The self-tapping screws will penetrate the open holes of the mounting posts 101e, forming threads, thus ensuring sufficient preload and anti-loosening effect. The open hole design also saves costs compared to pre-tapping threads. Simultaneously, the three mounting posts 101e provide a flat mounting surface, avoiding strain caused by uneven mounting surfaces when tightening screws during assembly of the inertial measurement unit 2, ensuring the measurement accuracy of the inertial measurement unit 2 after installation. 101f is a mounting post reinforcing rib, connecting the three mounting posts 101e. This enhances the strength of the mounting posts 101e and the overall rigidity of the embedded mounting block 101, thereby avoiding strain caused by deformation due to insufficient rigidity and ensuring the measurement accuracy of the inertial measurement unit 2 after installation. 101g is a positioning groove. After injection molding, the positioning groove 101g will be filled with plastic, so that the embedded mounting block 101 and the plastic shell 102 form an interlocking combination, increasing the joint area and improving the joint effect after the embedded mounting block 101 and the plastic shell 102 are integrally injection molded.

[0049] like Figure 5 and Figure 6 As shown, the plastic shell 102 includes functional features such as 102a-101f. 102a consists of two blind positioning holes, which are left after injection molding by positioning the embedded mounting block 101 through the mold positioning holes 101a. 102b is a T-shaped post; after injection molding, this T-shaped post 102b covers and encloses the plastic bonding hole 101b, greatly enhancing the ability of the embedded mounting block 101 and the plastic shell 102 to withstand lateral bonding shear forces and longitudinal pull-out holding forces. Figure 7 The illustration shows the bonding effect of the embedded mounting block 101 and the plastic shell 102 after integral injection molding. 102c is a filling boss; after injection molding, the filling boss 102c fills the positioning groove 101g of the embedded mounting block 101, creating an interlocking bond between the embedded mounting block 101 and the plastic shell 102, increasing the bonding area and improving the bonding effect after integral injection molding. 102d is the groove wall of the mounting block's mounting slot; after injection molding, the groove wall 102d covers and wraps around the annular flange 101d, greatly enhancing the ability of the embedded mounting block 101 and the plastic shell 102 to withstand transverse bonding shear forces and longitudinal pull-out holding forces. Figure 7 The illustration shows the combined effect of the embedded mounting block 101 and the plastic shell 102 after integral injection molding. 102g is a reinforcing rib of the plastic shell, which divides the plastic shell 2 into left and right parts, effectively improving the overall rigidity of the mounting area of ​​the inertial measurement unit 2. 102e is a wire harness groove, which is located on the reinforcing rib 102d of the plastic shell.

[0050] like Figure 1As shown, the housing 1 is an integral injection-molded structure consisting of the embedded mounting block 101 and the plastic housing 102, used to house components such as the inertial measurement unit 2 and the circuit board assembly 5. The inertial measurement unit 2 is used to measure and calculate the relative displacement, velocity, and attitude of the vehicle. The self-tapping screw 3 is used to lock and fix the inertial measurement unit 2. After it is locked into the mounting post 101e of the embedded mounting block 101, it will tap a thread, which can ensure sufficient preload and anti-loosening effect. At the same time, the use of self-tapping screws in combination with the open hole design saves costs compared to pre-tapping threads. The connecting wire 4 is used to connect the inertial measurement unit 2 and the circuit board assembly 5 to realize signal communication between the two. The circuit board assembly 5 is used to realize... The airbag controller has electrical functions and communicates with other electronic control components of the vehicle through connectors. The communication includes transmitting signals such as relative displacement, velocity, and attitude of the inertial measurement unit 2 to the vehicle domain controller, and integrating them with the transmission signals of the Global Navigation Satellite System (GNSS) to form the signal of the high-precision navigation system. The base plate 6 is used to cover and protect the inertial measurement unit 2 and the circuit board assembly 5, and is used for mounting to the vehicle body. It transmits vehicle-related speed, displacement, and attitude to the controller through the mounting point. The screws 7 connect the base plate 6, the circuit board assembly 5, and the housing 1 together for locking and assembling the airbag controller.

[0051] The present invention also provides a vehicle, including an airbag controller with an integrated inertial measurement unit provided by the present invention.

[0052] While the specific embodiments of the present invention have been described above in conjunction with the accompanying drawings, this is not intended to limit the scope of protection of the present invention. Those skilled in the art should understand that various modifications or variations that can be made by those skilled in the art without creative effort based on the technical solutions of the present invention are still within the scope of protection of the present invention.

Claims

1. A car airbag controller with an integrated inertial measurement unit, characterized in that, include: Housing, inertial measurement unit, circuit board assembly, and base plate; The housing includes an embedded mounting block and a plastic shell; the plastic shell is connected to the base plate, and a mounting slot for the mounting block is provided inside the plastic shell. The embedded mounting block is located in the mounting slot of the mounting block and is connected to the plastic shell. Multiple mounting posts and multiple positioning walls are set on the embedded mounting block; the inertial measurement unit is placed on the upper surface of the multiple mounting posts and fixedly connected to the mounting posts; the multiple positioning walls enclose the mounting space of the inertial measurement unit, and the inertial measurement unit is located in the mounting space. The inertial measurement unit is connected to the circuit board assembly; the circuit board assembly is fixed between the plastic housing and the base plate.

2. The automotive airbag controller with an integrated inertial measurement unit as described in claim 1, characterized in that, A T-shaped post is set on the plastic shell, and a stepped through hole is set on the embedded mounting block; the large end of the T-shaped post is located in the large hole of the stepped through hole; the small end of the T-shaped post is located in the small hole of the stepped through hole, and the small end of the T-shaped post is connected to the plastic shell.

3. The automotive airbag controller with an integrated inertial measurement unit as described in claim 1, characterized in that, Multiple positioning grooves are provided on the embedded mounting block; multiple filling bosses that fit the positioning grooves are provided on the plastic shell; the multiple filling bosses are connected to the multiple positioning grooves one by one.

4. The automotive airbag controller with an integrated inertial measurement unit as described in claim 1, characterized in that, The embedded mounting block is provided with a mold positioning hole, and the plastic shell is provided with a positioning blind hole; the positioning hole and the positioning blind hole are set coaxially.

5. A car airbag controller with an integrated inertial measurement unit as described in claim 1, characterized in that, An annular flange is set in the embedded mounting block, and an annular embedding groove is set on the groove wall of the mounting block mounting groove, and the edge of the annular flange is embedded in the annular embedding groove.

6. The automotive airbag controller with an integrated inertial measurement unit as described in claim 1, characterized in that, The plastic shell is equipped with reinforcing ribs, which divide the interior of the plastic shell into an inertial measurement unit (IMU) mounting area and other areas; the mounting block mounting slot is located within the IMU mounting area.

7. A car airbag controller with an integrated inertial measurement unit as described in claim 1, characterized in that, The plastic shell reinforcing ribs are provided with wire harness grooves; one end of the connecting wire is connected to the inertial measurement unit, and the other end of the connecting wire passes through the wire harness groove and is connected to the circuit board assembly.

8. A car airbag controller with an integrated inertial measurement unit as described in claim 7, characterized in that, The connecting wire is connected to the wire harness groove via a wire harness clip.

9. A car airbag controller with an integrated inertial measurement unit as described in claim 1, characterized in that, Reinforcing ribs are installed between multiple mounting columns.

10. A car, characterized in that, The invention includes an automotive airbag controller with an integrated inertial measurement unit as described in any one of claims 1-9.

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