Sensor assembly

Abstract

The application discloses a kind of sensor assembly, belong to sensor technical field, the sensor assembly includes: fixed pedestal and multiple sensors, fixed pedestal has multiple installation surfaces, each installation surface is formed with installation groove, and the end of each installation groove is converged in the same position of fixed pedestal, sensor includes the induction head and signal line connected, at least part of induction head is installed in corresponding installation groove, signal line is laid to the end of its convergence along corresponding installation groove and leads out fixed pedestal. According to the sensor assembly of the embodiment of the application, the induction head of the sensor can be fixed and protected by multiple installation grooves, thereby facilitating to improve the service life and reliability of the sensor, reduce the risk of data collection failure caused by sensor falling off, and multiple signal lines can be collected on one side of the convergence end of each installation groove and led out of the fixed pedestal, thereby facilitating to improve the space utilization of the sensor assembly.

Description

Technical Field

[0001] This invention relates to the field of sensor technology, and more specifically, to a sensor assembly. Background Technology

[0002] In automotive crash tests, acceleration sensors are typically installed at various locations on the vehicle body to measure acceleration information in different directions. In practice, acceleration sensors are often assembled into unidirectional, bidirectional, or tridirectional sensors using mounting base plates.

[0003] In related technologies, sensors and their mounting substrates are relatively large, often making them unsuitable for placement in confined spaces. Furthermore, sensors are highly susceptible to damage or dislodgement during collisions due to impacts and pressure, leading to data acquisition failures. Given the high cost of automotive safety crash tests and the extremely high requirements for sensor data acquisition success rates, traditional methods are insufficient to meet these demands. Summary of the Invention

[0004] The present invention aims to at least partially solve one of the aforementioned technical problems in the prior art. To this end, the present invention proposes a sensor assembly that can reduce the risk of data acquisition failure due to sensor damage or detachment, and improve the space utilization rate of the sensor assembly.

[0005] According to an embodiment of the present invention, a sensor assembly includes: a fixed base having a plurality of mounting surfaces, each mounting surface having a mounting groove, and one end of each mounting groove converging at the same position on the fixed base; a plurality of sensors corresponding one-to-one with the plurality of mounting grooves, each sensor including a connected sensing head and a signal line, at least a portion of the sensing head being mounted in the corresponding mounting groove, and the signal line being laid along the corresponding mounting groove to the end at its converging point and leading out of the fixed base.

[0006] According to the sensor assembly of the present invention, the fixing base can fix and protect the sensor head through multiple mounting grooves, thereby improving the service life and reliability of the sensor and reducing the risk of data acquisition failure caused by sensor detachment. At the same time, multiple signal lines can converge on one side of the intersection of each mounting groove and lead out of the fixing base, thereby improving the space utilization of the sensor assembly on the measured device.

[0007] According to some embodiments of the present invention, the plurality of mounting surfaces are respectively a first mounting surface, a second mounting surface and a third mounting surface, wherein the first mounting surface, the second mounting surface and the third mounting surface are perpendicular to each other.

[0008] According to some embodiments of the present invention, the mounting groove formed by the first mounting surface is a first mounting groove, the mounting groove formed by the second mounting surface is a second mounting groove, and the mounting groove formed by the third mounting surface is a third mounting groove; in a projection parallel to the third mounting surface, a first included angle is formed between the first mounting groove and the second mounting groove, and the angle bisector of the third mounting groove coincides with the angle bisector of the first included angle.

[0009] According to some embodiments of the present invention, the sensing head includes: a connecting plate, which is attached to the mounting surface outside the corresponding mounting groove; and a sensing body, which is connected to the connecting plate and is located within the corresponding mounting groove.

[0010] According to some embodiments of the present invention, the depth of the mounting groove is greater than or equal to the thickness of the sensing body.

[0011] According to some embodiments of the present invention, mounting holes are formed on both sides of the mounting groove outside the mounting surface, and the connecting plate is detachably connected to the mounting holes by fasteners.

[0012] According to some embodiments of the present invention, the fixing base is further provided with binding holes at the intersection of the plurality of mounting grooves; the sensor assembly further includes: cable ties, wherein the signal line of each sensor is bound and fixed to the binding hole by the cable ties.

[0013] According to some embodiments of the present invention, the fixing base is adapted to be bonded to the test piece.

[0014] According to some embodiments of the present invention, the fixing base is made of stainless steel.

[0015] According to some embodiments of the present invention, the sensor is an acceleration sensor.

[0016] Additional aspects and advantages 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

[0017] Figure 1 This is a schematic diagram of a sensor assembly according to an embodiment of the present invention; Figure 2 This is a schematic diagram of a sensor head according to an embodiment of the present invention; Figure 3 This is a schematic diagram of a fixed base according to an embodiment of the present invention; Figure 4 This is a front view of the fixed base according to an embodiment of the present invention; Figure 5This is a side view of the fixed base according to an embodiment of the present invention; Figure 6 This is a top view of the fixed base according to an embodiment of the present invention.

[0018] Figure label: Fixed base 1; Mounting surface 11; First mounting surface 11a; Second mounting surface 11b; Third mounting surface 11c; Mounting groove 12; First mounting groove 12a, second mounting groove 12b; Third mounting groove 12c; 2. Sensor head; 21. Connecting plate; 22. Sensor body; Sensor assembly 10. Detailed Implementation

[0019] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0020] In the description of this invention, it should be understood that the terms "width", "thickness", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention.

[0021] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0022] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0023] The sensor assembly 10 according to an embodiment of the present invention will now be described in detail with reference to the accompanying drawings.

[0024] Reference Figure 1 and Figure 2 As shown, the sensor assembly 10 according to an embodiment of the present invention includes: a fixed base 1 and a plurality of sensors. The fixed base 1 has a plurality of mounting surfaces 11, each mounting surface 11 having a mounting groove 12 formed therein, and one end of each mounting groove 12 intersects at the same position on the fixed base 1. The plurality of sensors correspond one-to-one with the plurality of mounting grooves 12. Each sensor includes a connected sensing head 2 and a signal line. At least a portion of the sensing head 2 is mounted in the corresponding mounting groove 12, and the signal line is laid along the corresponding mounting groove 12 to the end of its intersection and led out of the fixed base 1.

[0025] Specifically, the sensor assembly 10 can be used in fields such as vehicle safety performance crash tests. In crash tests, the sensor assembly 10 can be fixed to the test component such as the vehicle body through its fixing base 1, and multiple sensors on the fixing base 1 can collect data of the test component during the collision from different directions.

[0026] The fixed base 1 can be a block structure with multiple mounting surfaces 11, each with a mounting groove 12. The sensor head 2 can be installed entirely or partially in the mounting groove 12 to fix and protect the sensor head 2. In the collision test, each sensor head 2 can collect collision data in the corresponding direction. The mounting groove 12 can reduce the sensor head 2 from being bumped or squeezed, reducing the risk of damage to the sensor head 2, thereby improving the service life and reliability of the sensor. At the same time, the mounting groove 12 can reduce the proportion of test failures and data acquisition failures caused by the sensor head 2 falling off due to collision, thereby improving the efficiency and success rate of the whole vehicle collision test and reducing the test cost.

[0027] The sensor's signal line can transmit the collision data collected by the connected sensing head 2 to an external host computer. The signal line of each sensor is laid along the corresponding mounting groove 12. The mounting groove 12 can protect the signal line and reduce the risk of damage or scratches. The mounting groove 12 can also restrict the direction of the signal line. Since one end of each mounting groove 12 on the fixed base 1 converges and connects to the same position, multiple signal lines can converge on one side of the converging end of the mounting groove 12 and extend out of the fixed base 1 from there. This avoids each signal line being led out at a different position on the fixed base 1, reducing the assembly space and space occupied by the sensor assembly 10. This helps to improve the space utilization of the sensor assembly 10 on the measured object, reduce the space requirement for arranging the sensor assembly 10, and allow it to be arranged in a narrower space.

[0028] According to the sensor assembly 10 of the present invention, the fixing base 1 can fix and protect the sensor head 2 of the sensor through multiple mounting grooves 12, which is conducive to improving the service life and reliability of the sensor and reducing the risk of sensor falling off and causing data acquisition failure. At the same time, multiple signal lines can converge on one side of the intersection of each mounting groove 12 and lead out of the fixing base 1, which is conducive to improving the space utilization of the sensor assembly 10 on the measured object.

[0029] In some embodiments of the present invention, reference is made to... Figures 3-6 As shown, the multiple mounting surfaces 11 are a first mounting surface 11a, a second mounting surface 11b, and a third mounting surface 11c, and the first mounting surface 11a, the second mounting surface 11b, and the third mounting surface 11c are perpendicular to each other.

[0030] Specifically, the first mounting surface 11a, the second mounting surface 11b, and the third mounting surface 11c are three adjacent and mutually perpendicular surfaces, and the normal direction of the first mounting surface 11a can be... Figure 3 In the X direction, a sensor mounted in the mounting groove 12 on the first mounting surface 11a can be used to collect data in the X direction, and the normal direction of the second mounting surface 11b can be... Figure 3 In the Y direction, a sensor mounted in the mounting groove 12 on the second mounting surface 11b can be used to collect data in the Y direction, and the normal direction of the third mounting surface 11c can be... Figure 3 In the Z direction, the sensor installed in the mounting groove 12 on the third mounting surface 11c can be used to collect data in the Z direction. The first mounting surface 11a, the second mounting surface 11b and the third mounting surface 11c are perpendicular to each other, that is, the X direction, the Y direction and the Z direction are perpendicular to each other, so as to realize the acquisition of multi-dimensional spatial data.

[0031] In some embodiments of the present invention, reference is made to... Figures 3-6 As shown, the mounting groove 12 formed by the first mounting surface 11a is the first mounting groove 12a, the mounting groove 12 formed by the second mounting surface 11b is the second mounting groove 12b, and the mounting groove 12 formed by the third mounting surface 11c is the third mounting groove 12c. In a projection parallel to the third mounting surface 11c, a first included angle is formed between the first mounting groove 12a and the second mounting groove 12b, and the angle bisector of the first included angle coincides with the third mounting groove 12c.

[0032] Specifically, the plane parallel to the third mounting surface 11c is... Figure 3In the XY plane, the first mounting groove 12a and the second mounting groove 12b form a first angle of 90° in the projection on the XY plane, and the third mounting groove 12c is located at the bisector of the first angle. This makes the first mounting groove 12a, the second mounting groove 12b and the third mounting groove 12c evenly distributed in non-intersecting positions, so as to improve space utilization, reduce the installation difficulty of the sensor head 2, and reduce the risk of mutual interference of the sensor heads 2 installed in different mounting grooves 12.

[0033] In some embodiments of the present invention, reference is made to... Figures 1-2 As shown, the sensor head 2 includes a connecting plate 21 and a sensor body 22. The connecting plate 21 is attached to the mounting surface 11 on the outside of the corresponding mounting groove 12. The sensor body 22 is connected to the connecting plate 21 and is located in the corresponding mounting groove 12.

[0034] Specifically, the connecting plate 21 can be a steel plate structure, and the sensing body 22 is a protruding structure fixed in the middle of one side of the connecting plate 21. The sensing body 22 is connected to the signal line and is used to collect collision data and transmit the collision data to the host computer through the signal line.

[0035] When the sensor head 2 is assembled with the fixed base 1, it can be installed in an upside-down manner, that is, the connecting plate 21 overlaps the groove of the mounting groove 12 and fits against the mounting surface 11, and the sensor body 22 is inserted into the mounting groove 12. This allows the sensor body 22 to make full use of the space in the mounting groove 12, preventing the sensor body 22 from protruding from the fixed base 1, thereby reducing the space occupied by the sensor assembly 10. In addition, the mounting groove 12 can protect the sensor body 22, preventing it from being impacted and preventing it from falling off or being damaged.

[0036] In some embodiments of the present invention, the depth of the mounting groove 12 is greater than or equal to the thickness of the sensing body 22, so that the sensing body 22 can be fully inserted into the mounting groove 12, and the connecting plate 21 can be attached to the mounting surface 11 outside the corresponding mounting groove 12.

[0037] Preferably, the depth of the mounting groove 12 is greater than the thickness of the sensing body 22. For example, the thickness of the sensing body 22 is 4mm and the depth of the mounting groove 12 is 4mm to 5mm, so that the sensing body 22 and the bottom wall of the mounting groove 12 form a certain gap, which can reduce the risk of deformation and compression of the sensing body 22 when the impact force is large.

[0038] In some embodiments of the present invention, the width of the mounting groove 12 is greater than or equal to the width of the sensing body 22. For example, the width of the sensing body 22 is 4 mm, and the width of the mounting groove 12 is 4 mm to 5 mm.

[0039] In some embodiments of the present invention, mounting surface 11 has mounting holes formed on both sides outside mounting groove 12, and connecting plate 21 is detachably connected to mounting holes by fasteners.

[0040] Specifically, the connecting plate 21 can be connected to the corresponding mounting hole on both sides of the mounting groove 12 by a fastener. That is, the fastener can pass through the connecting plate 21 and be connected to the mounting hole. The connecting plate 21 and the mounting surface 11 can be disassembled and assembled by removing and installing the fastener, so as to facilitate the assembly, disassembly and maintenance of the sensor.

[0041] In some embodiments, the mounting hole is a threaded hole, and the fastener is a bolt that is threaded into the threaded hole.

[0042] In other embodiments, the mounting hole is a snap-fit ​​hole, and the fastener is a snap-fit ​​buckle that engages with the snap-fit ​​hole.

[0043] In some embodiments of the present invention, the fixing base 1 is provided with binding holes at the intersection of multiple mounting grooves 12, and the sensor assembly 10 also includes cable ties, wherein the signal line of each sensor is bound and fixed to the binding hole by the cable ties.

[0044] Specifically, cable ties can be threaded through the binding holes and wrapped around the outside of the signal lines of each sensor. After the cable ties are tightened, all the signal lines can be bundled and fixed in the binding holes, thereby improving the stability of the signal lines and reducing the shaking of the signal lines relative to the fixed base 1 during collisions, thus preventing the signal lines from affecting the data acquisition accuracy of the sensor head 2.

[0045] In some embodiments of the present invention, the fixing base 1 is adapted to be bonded to the test piece. The fixing base 1 can be bonded to the test piece on the side opposite to the third mounting surface 11c by structural adhesive. The bonding method will not damage the structure of the test piece and reduce the change of the mechanical properties of the test piece by the fixing base 1, so as to ensure the accuracy of the data collected by the sensor assembly 10 from the test piece.

[0046] For example, if the tested component is a car body, and the fixing base 1 is connected to the car body by bolts, holes need to be drilled in the car body, which would damage the original structure of the car body and may cause the collision data collected by the sensor assembly 10 to be distorted. Therefore, in this embodiment of the invention, the fixing base 1 is connected to the car body by adhesive bonding, which can ensure the authenticity of the data collected by the sensor assembly 10.

[0047] In some embodiments of the present invention, the fixed base 1 is made of stainless steel. Stainless steel has high strength and rigidity, which can protect and fix the sensor during the collision process, and prevent the sensor from being damaged or falling off. At the same time, stainless steel has low cost, strong corrosion resistance, and good economic efficiency.

[0048] In some embodiments of the present invention, the sensor is an acceleration sensor, for example, an H64C acceleration sensor. During a vehicle collision, the acceleration sensor can collect acceleration information of the vehicle body to assess the safety of the vehicle body and verify whether the passive safety performance of the vehicle meets the regulations and design requirements.

[0049] For example, an acceleration sensor installed in the first mounting groove 12a can collect acceleration information of the vehicle body in the X direction, an acceleration sensor installed in the second mounting groove 12b can collect acceleration information of the vehicle body in the Y direction, and an acceleration sensor installed in the third mounting groove 12c can collect acceleration information of the vehicle body in the Z direction.

[0050] In other embodiments of the present invention, the sensor is an angular velocity sensor.

[0051] In some embodiments of the present invention, the fixed base 1 is a cuboid structure with a length of 16mm, a width of 16mm, and a height of 12mm, and is made of stainless steel. Corresponding mounting grooves 12 are machined on its three adjacent surfaces by means of machining, and one end of the three mounting grooves 12 intersects. After a corresponding sensor is installed in each mounting groove 12 by means of inverted fastening, the sensor assembly 10 is a cuboid structure with a length of 17mm, a width of 17mm, and a height of 13mm, and its volume can be reduced by about 43% compared with the traditional structure.

[0052] The sensor assembly 10 according to the present invention can be applied to various tests such as vehicle collision tests and trolley tests. After installation, the sensor assembly 10 can significantly reduce its size and space requirements for its placement. It can be placed in narrower spaces, saving installation space while ensuring the effectiveness of data acquisition, increasing the number of test installation scenarios, and improving installation flexibility.

[0053] The sensor is at least partially built into the fixed base 1. Its embedded installation provides the sensor with a protective enclosure while maintaining ease of installation, improving its protection in high-energy crash tests. Under harsh conditions such as compression and impact, the fixed base 1 can deform to protect the expensive sensor, preventing the sensor body 22 from being exposed, significantly reducing the sensor damage rate and effectively increasing its service life. At the same time, it can prevent sensor damage or data acquisition failure. In the face of high-cost vehicle crash tests, it can reduce the risk of test failure. The sensor assembly 10 can improve the test success rate and data validity at a relatively low cost, significantly saving crash test costs and achieving cost reduction and efficiency improvement in crash tests.

[0054] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. In addition, those skilled in the art can combine and integrate the different embodiments or examples described in this specification.

[0055] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A sensor assembly, characterized in that, include: A fixed base (1) has multiple mounting surfaces (11), each mounting surface (11) having a mounting groove (12), and one end of each mounting groove (12) converging at the same position on the fixed base (1). Multiple sensors are provided, each corresponding to a mounting groove (12). Each sensor includes a connected sensing head (2) and a signal line. At least a portion of the sensing head (2) is installed in the corresponding mounting groove (12). The signal line is laid along the corresponding mounting groove (12) to the end of its intersection and leads out of the fixing base (1).

2. The sensor assembly according to claim 1, characterized in that, The plurality of mounting surfaces (11) are a first mounting surface (11a), a second mounting surface (11b) and a third mounting surface (11c), and the first mounting surface (11a), the second mounting surface (11b) and the third mounting surface (11c) are perpendicular to each other.

3. The sensor assembly according to claim 2, characterized in that, The mounting groove (12) formed by the first mounting surface (11a) is the first mounting groove (12a), the mounting groove (12) formed by the second mounting surface (11b) is the second mounting groove (12b), and the mounting groove (12) formed by the third mounting surface (11c) is the third mounting groove (12c). In a projection parallel to the third mounting surface (11c), a first included angle is formed between the first mounting groove (12a) and the second mounting groove (12b), and the third mounting groove (12c) coincides with the angle bisector of the first included angle.

4. The sensor assembly according to claim 1, characterized in that, The sensor head (2) includes: A connecting plate (21) is attached to the mounting surface (11) on the outside of the corresponding mounting groove (12); The sensing body (22) is connected to the connecting plate (21) and is located in the corresponding mounting groove (12).

5. The sensor assembly according to claim 4, characterized in that, The depth of the mounting groove (12) is greater than or equal to the thickness of the sensing body (22).

6. The sensor assembly according to claim 4, characterized in that, The mounting surface (11) has mounting holes formed on both sides outside the mounting groove (12), and the connecting plate (21) is detachably connected to the mounting holes by fasteners.

7. The sensor assembly according to claim 1, characterized in that, The fixing base (1) is also provided with binding holes at the intersection of the multiple mounting grooves (12); The sensor assembly further includes cable ties, wherein the signal lines of each sensor are secured to the binding holes by the cable ties.

8. The sensor assembly according to claim 1, characterized in that, The fixed base (1) is adapted to be bonded to the test piece.

9. The sensor assembly according to claim 1, characterized in that, The fixed base (1) is made of stainless steel.

10. The sensor assembly according to any one of claims 1-9, characterized in that, The sensor is an accelerometer.

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