Inertial measurement device and movable apparatus

Abstract

The application relates to an inertial measurement device and a movable device, the movable device comprising a body and the inertial measurement device, the inertial measurement device comprising a shell and an inertial measurement assembly, the shell having a rectangular mounting surface, the mounting surface having oppositely arranged long edges of the mounting surface and oppositely arranged short edges of the mounting surface, the inertial measurement device being arranged in the shell and comprising a main board, a main chip and a plug-in connector for plugging with the movable device along a plug-in direction, the mounting surface being provided with a through hole, a plug-in part of the plug-in connector extending out of the mounting surface through the through hole, the four peripheral edges of the plug-in connector comprising two oppositely arranged long edges of the plug-in connector and two oppositely arranged short edges of the plug-in connector, the long edges of the plug-in connector being perpendicular to the long edges of the mounting surface, and the short edges of the plug-in connector being perpendicular to the short edges of the mounting surface, so that the volume of the inertial measurement device can be effectively reduced, and especially when the inertial measurement device is applied to a scene such as a safety airbag, the small-volume inertial measurement device is more suitable for the scene.

Description

Technical Field

[0001] This application relates to the field of inertial measurement technology, and in particular to an inertial measurement device and a mobile device. Background Technology

[0002] An inertial measurement unit (IMU) is a device that uses sensing elements such as gyroscopes and accelerometers to measure the angular velocity and acceleration of a mobile device in three-dimensional space in real time, and uses this to calculate the attitude of the mobile device. It has important application value in navigation.

[0003] Typically, inertial measurement units (INS) have connectors that mate with the connectors of mobile devices. These connectors are plugged into each other to enable signal transmission between the INS and the mobile device. However, in existing INS, the connectors are usually quite large, significantly reducing the overall space required for the INS components and hindering the effective reduction in the overall size of the INS. Utility Model Content

[0004] Therefore, the purpose of this application is to provide an inertial measurement device and a movable device including the inertial measurement device, so as to solve the problem that the overall size of the inertial measurement device cannot be effectively reduced due to the large size of the connector in existing inertial measurement devices.

[0005] According to one aspect of this application, an inertial measurement device is provided, comprising:

[0006] The housing has a rectangular mounting surface, the mounting surface having two long sides parallel to a width direction and two short sides parallel to a length direction and opposite to each other, the length direction being perpendicular to the width direction, and a through hole is provided on the mounting surface;

[0007] An inertial measurement unit is disposed within the housing. The inertial measurement unit includes a connector, the insertion portion of which extends through the through hole from the mounting surface, so that the connector can be connected to the body of the mobile device in a insertion direction.

[0008] The perimeter of the connector includes two long sides and two short sides. The long sides of the connector are perpendicular to the long side of the mounting surface, and the short sides of the connector are perpendicular to the short side of the mounting surface.

[0009] In one embodiment, the minimum distance from the edge of the through hole to one of the long sides of the mounting surface is greater than the minimum distance from the edge of the through hole to the other long side of the mounting surface.

[0010] In one embodiment, the inertial measurement unit further includes a motherboard and a main chip. The main chip and the connector are disposed on the same side or opposite sides of the motherboard along the insertion direction, which is perpendicular to both the length direction and the width direction. The main chip and the connector are communicatively connected to each other through the motherboard. The projections of the main chip and the connector are offset from each other. The projection of the main chip is the projection of the main chip onto the motherboard along the insertion direction, and the projection of the connector is the projection of the connector onto the motherboard along the insertion direction.

[0011] In one embodiment, the motherboard has a first side and a second side that are oppositely arranged and both perpendicular to the length direction, and the distance from the center point of the projection of the connector to the first side is greater than the distance to the second side.

[0012] In one embodiment, the mounting surface is provided with a mounting portion protruding toward the outside of the housing, and an arrangement space is formed between the mounting portion and the mounting surface.

[0013] In one embodiment, a plurality of mounting portions are provided at opposite ends of the mounting surface, each mounting portion having a mounting point and / or a guide post. The mounting point is used for fastener connection so that the inertial measurement device and the body of the mobile device are interconnected by the fastener. The guide post is used to provide guidance when the connector is inserted into the body of the mobile device.

[0014] In one embodiment, the guide post includes a first guide post and a second guide post, the first guide post and the second guide post having different diameters.

[0015] In one embodiment, the outer surface of the housing is provided with a clearance groove.

[0016] According to another aspect of this application, a mobile device is provided, including a body and an inertial measurement device as described in any of the above embodiments, wherein the body is provided with a connector that is connected to a plug of the inertial measurement device to enable the inertial measurement device to measure the inertial parameters of the mobile device.

[0017] In one embodiment, the rigidity of the housing of the inertial measurement device is greater than the rigidity of the body.

[0018] The aforementioned inertial measurement device and mobile device, by having a rectangular mounting surface on the housing, with two oppositely arranged long sides and two oppositely arranged short sides, and by making the long side of the connector perpendicular to the long side of the mounting surface and the short side of the connector perpendicular to the short side of the mounting surface, can effectively reduce the size of the inertial measurement device. Especially when the inertial measurement device is applied to scenarios such as airbags, the small-volume inertial measurement device is more suitable for such scenarios. Attached Figure Description

[0019] Figure 1 An exploded view of an inertial measurement device provided in an embodiment of this application.

[0020] Figure 2 An axonometric view of an inertial measurement device provided in an embodiment of this application.

[0021] Figure 3 A side view of an inertial measurement device provided in an embodiment of this application.

[0022] Figure 4 A bottom view of an inertial measurement device provided in an improved embodiment of this application.

[0023] Figure 5 This is a bottom view of the inertial measurement component in an inertial measurement apparatus provided in an improved embodiment of this application.

[0024] Explanation of reference numerals in the attached figures:

[0025] 10. Inertial Measurement Unit; 100. Housing; 101. Receiving Cavity; 102. Through Hole; 102a. Long Side of Through Hole; 102b. Short Side of Through Hole; 104. Mounting Surface; 104a. Short Side of Mounting Surface; 104b. Long Side of Mounting Surface; 105. Arrangement Space; 106. Mounting Part; 107. Mounting Point; 108. Guide Post; 108a. First Guide Post; 108b. Second Guide Post; 200. Inertial Measurement Assembly; 210. Main Board; 211. First Side; 212. Second Side; 220. Connector; 221. Long Side of Connector; 222. Short Side of Connector. Detailed Implementation

[0026] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0027] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application 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 application.

[0028] Furthermore, where the terms "first" and "second" appear, these terms are 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 with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0029] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," 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 or an electrical connection; 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, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0030] In this application, unless otherwise expressly specified and limited, the use of descriptions such as "above" or "below" the second feature indicates that the first and second features are in direct contact or indirect contact via an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. Similarly, "below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0031] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.

[0032] This application provides an inertial measurement device applied to a mobile device. The mobile device includes a body and an inertial measurement device. The inertial measurement device is connected to the body to measure the inertial parameters (such as angular velocity or acceleration) of the mobile device when it is in motion, thereby calculating the attitude of the mobile device.

[0033] The structure of the inertial measurement device is described below. It is understood that, in other embodiments, the inertial measurement device of this application can be applied to mobile devices such as automobiles and aircraft, and is not limited thereto.

[0034] In a specific application example, the mobile device of this application refers to a car, and the inertial measurement device is installed on the car's airbag control unit (ACU).

[0035] See Figure 1 , Figure 1 An exploded view of an inertial measurement device 10 provided in an embodiment of this application is shown. Figure 2 An axonometric view of the inertial measurement device 10 is shown. An embodiment of the inertial measurement device 10 provided in this application includes a housing 100 and an inertial measurement assembly 200. The inertial measurement assembly 200 is disposed on the housing 100 and is used to interconnect with the body of a mobile device and transmit data to acquire the inertial parameters of the mobile device in real time; the housing 100 provides support for the inertial measurement assembly 200 or provides a mounting base.

[0036] Specifically, the inertial measurement unit 200 includes a motherboard 210, a main chip, and a connector 220. The motherboard 210 has circuitry, and the main chip and connector 220 are mounted on the motherboard 210. The main chip and connector 220 are communicatively connected via the motherboard 210. The main chip provides inertial measurement data. A connector is located on the fuselage, and the connector 220 is used to connect to a connector on the fuselage along a connection direction (the Z direction shown in the figure), enabling the inertial measurement unit 200 to connect to the fuselage. This allows the sensing elements integrated on the main chip to measure the fuselage's inertial parameters (such as angular velocity or acceleration) in real time. For example, the sensing element may be a gyroscope or an accelerometer.

[0037] In one embodiment, the housing 100 has a receiving cavity 101, the inertial measurement device 10 is disposed in the receiving cavity 101, and the housing 100 has a mounting surface 104 on one side along the insertion direction. A through hole 102 communicating with the receiving cavity 101 is provided on the mounting surface 104. The main board 210 can be disposed in the receiving cavity 101 by snapping it into the receiving cavity 101, or by providing a step on the side wall of the receiving cavity 101 to bond the main board 210 to the step, etc. The connector 220 has a plug-in portion that extends out of the mounting surface 104 through the through hole 102, allowing the connector 220 to... Figure 3 As shown, it is plugged into the mobile device along the insertion direction.

[0038] See Figure 4 , Figure 4 A bottom view of the inertial detection device is shown. Preferably, the housing 100 is hexahedral in shape, meaning that when viewed from below, the mounting surface 104 of the housing 100 is rectangular. The mounting surface 104 has two short sides 104a parallel to a length direction (X direction shown in the figure) and two long sides 104b parallel to a width direction (Y direction shown in the figure). The width direction is perpendicular to the length direction and perpendicular to the insertion direction. The connector 220 is also rectangular, with its perimeter including two long sides 221 parallel to the width direction and two short sides 222 parallel to the length direction. The long sides 221 are perpendicular to the long sides 104b of the mounting surface, and the short sides 222 are perpendicular to the short sides 104a of the mounting surface. Correspondingly, the through hole 102 is also rectangular, having two long sides 102a parallel to the width direction and two short sides 102b parallel to the length direction. The long sides 102a are also perpendicular to the long side 104b of the mounting surface, and the short sides 102b are also perpendicular to the short side 104a of the mounting surface.

[0039] Thus, through the above-mentioned configuration, the overall length dimension of the inertial measurement device 10 can be effectively reduced, making the inertial measurement device 10 more compact in structure. This effectively reduces the volume of the inertial measurement device 10, especially when the inertial measurement device 10 is applied to scenarios such as airbags, where the smaller inertial measurement device 10 is more suitable.

[0040] It is understood that in other embodiments, the housing 100 and the connector 220 are from... Figure 4 When viewed from a low angle, the shape can also be a trapezoid, parallelogram, or any shape with at least two long sides that are parallel to each other; this is not a limitation here.

[0041] Furthermore, in some embodiments, the plane corresponding to the motherboard 210 is arranged perpendicular to the insertion direction, and the main chip and the connector 220 are arranged on the same side or different sides of the motherboard 210 along the insertion direction. See also Figure 5 The figure shows a bottom view of the inertial measurement unit 200. Figure 5 In the embodiments shown, viewed from a low angle (i.e., perpendicular to the paper in the figure), the motherboard 210 is rectangular, and the long side 221 of the connector is perpendicular to the long side of the motherboard 210. Furthermore, in a preferred embodiment, the projection of the main chip and the projection of the connector 220 are offset from each other. It should be noted that the projection of the main chip refers to its projection onto the motherboard 210 along the insertion direction; the projection of the connector 220 refers to its projection onto the motherboard 210 along the insertion direction.

[0042] Furthermore, the motherboard 210 has a first side 211 and a second side 212 that are oppositely arranged and both perpendicular to the length direction. The distance from the center point of the projection of the connector 220 to the first side 211 is greater than the distance to the second side 212. As can be seen from the figure, the connector 220 is not located in a central position on the motherboard 210. Therefore, through the above design, sufficient space can be left on the motherboard 210 to arrange the main chip, so that the projection of the main chip on the motherboard 210 along the insertion direction is offset from the projection of the connector 220 on the motherboard 210 along the insertion direction. Correspondingly, the minimum distance from the edge of the through hole 102 to the long side 104b of one of the mounting surfaces is greater than the minimum distance from the edge of the through hole 102 to the long side 104b of the other mounting surface. In other words, the through hole 102 is also not located in a central position on the mounting surface 104 of the housing 100.

[0043] Thus, while ensuring the compact structure of the inertial measurement device 10, the main chip and the connector 220 do not interfere with each other in the insertion direction. Therefore, when the inertial measurement device 10 is inserted into the body of the mobile device, the insertion force applied by the connector 220 to the motherboard 210 will not affect the main chip, thereby avoiding damage to the main chip and effectively protecting it.

[0044] For other structures of housing 100, please refer to [link / reference needed]. Figure 2 In the embodiments provided in this application, the mounting surface 104 of the housing 100 is provided with a mounting portion 106 protruding outward from the housing 100, and an arrangement space 105 is formed between the mounting portion 106 and the mounting surface 104. For example Figure 2 As shown, two mounting portions 106 are provided at opposite ends of the mounting surface 104. In other embodiments, the number of mounting portions 106 is not limited to two, but may be multiple, or there may be only one mounting portion 106. A mounting portion 106 may extend in a ring shape along the circumference of the mounting surface 104, and there is no limitation on this.

[0045] Thus, when the connector of the inertial measurement device 10 is connected to the connector mounted on the chassis, the mounting surface 104 contacts the chassis. Due to the presence of the arrangement space 105, the motherboard 210 and the connector mounted on the chassis are separated by a large distance by the arrangement space 105, thereby effectively reducing electronic interference between the main chip on the motherboard 210 and the connector. Furthermore, since the arrangement space 105 is a large space, it can also be used for wiring, thus avoiding exposed wiring and effectively protecting the wiring.

[0046] Furthermore, such as Figure 2 As shown, each mounting portion 106 is provided with a mounting point 107 for fastener connection such as bolts. For example, the mounting point 107 can be a mounting hole, through which fasteners are sequentially inserted into the body of the mobile device and the mounting hole, allowing the inertial measurement device 10 to be connected to the body via fasteners. In the embodiment shown, each of the two mounting portions 106 has a mounting point 107, and the two mounting points 107 are diagonally distributed, allowing for a more secure connection between the inertial measurement device 10 and the body.

[0047] Furthermore, each mounting portion 106 is also provided with a guide post 108 protruding relative to the mounting portion 106. The guide post 108 is used to provide guidance when the connector 220 and the connector on the body are inserted into each other, thereby preventing the connector 220 and the connector from being misaligned during insertion, thus ensuring that the two can be effectively inserted and avoiding poor contact. Specifically, in this embodiment, the guide post 108 includes a first guide post 108a and a second guide post 108b, such as... Figure 2 As shown in the embodiment, the first guide post 108a and the second guide post 108b are each respectively disposed on a mounting part 106, and the two are also diagonally distributed;

[0048] Preferably, the diameter of the first guide post 108a is different from the diameter of the second guide post 108b. This design enables the inertial measurement device 10 to have a foolproof function, that is, when the inertial measurement device 10 is inserted into the connector mounted on the machine body along the insertion direction, it can only be inserted in a specific orientation, avoiding the situation where the inertial measurement device 10 or the connector of the machine body is damaged due to incorrect insertion orientation.

[0049] In other embodiments, a mark may be provided on the housing 100 to allow the user to identify whether the insertion orientation is correct. For example, an arrow may be provided or a chamfer may be made on one of the edges of the housing 100. No particular limitation is made here.

[0050] It is understandable that the mounting section 106 may only have mounting point 107, or it may only have guide post 108 without mounting point 107; there is no limitation here.

[0051] Furthermore, such as Figure 4 As shown, the outer surface of the housing 100 is also provided with a clearance groove 109. For example, the clearance groove 109 can be provided at opposite ends of the housing 100, so that the housing 100 can avoid each other with other modules on the body, and avoid the housing 100 or the body from being damaged due to mutual interference when they are connected.

[0052] In addition, this application also provides a mobile device, which includes the inertial measurement device 10 as described above. As mentioned above, the mobile device includes a body and a connector mounted on the body, the connector being connected to the plug 220 of the inertial measurement device 10. The specific structure of the inertial measurement device 10 is as described in the above embodiments; in a preferred embodiment, the hardness of the housing 100 of the inertial measurement device 10 can be greater than the hardness of the outer shell of the body, so that when the inertial measurement device 10 and the body collide due to vibration, damage to the structure of the inertial measurement device 10 can be effectively avoided. Since the mobile device adopts all the technical solutions of the above embodiments, it possesses at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be elaborated further here.

[0053] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0054] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. An inertial measurement device, characterized in that, include: The housing has a rectangular mounting surface, the mounting surface having two long sides parallel to a width direction and two short sides parallel to a length direction and opposite to each other, the length direction being perpendicular to the width direction, and a through hole is provided on the mounting surface; An inertial measurement unit is disposed within the housing. The inertial measurement unit includes a connector, the insertion portion of which extends through the through hole from the mounting surface, so that the connector can be connected to the body of the mobile device in a insertion direction. The perimeter of the connector includes two long sides and two short sides. The long sides of the connector are perpendicular to the long side of the mounting surface, and the short sides of the connector are perpendicular to the short side of the mounting surface.

2. The inertial measurement device according to claim 1, characterized in that, The minimum distance from the edge of the through hole to one of the long sides of the mounting surface is greater than the minimum distance from the edge of the through hole to the other long side of the mounting surface.

3. The inertial measurement device according to claim 1, characterized in that, The inertial measurement unit further includes a motherboard and a main chip. The main chip and the connector are disposed on the same side or opposite sides of the motherboard along the insertion direction. The insertion direction is perpendicular to both the length direction and the width direction. The main chip and the connector are communicatively connected to each other through the motherboard. The projection of the main chip and the projection of the connector are offset from each other. The projection of the main chip is the projection of the main chip onto the motherboard along the insertion direction, and the projection of the connector is the projection of the connector onto the motherboard along the insertion direction.

4. The inertial measurement device according to claim 3, characterized in that, The motherboard has a first side and a second side that are positioned opposite each other and are perpendicular to the length direction. The distance from the center point of the projection of the connector to the first side is greater than the distance to the second side.

5. The inertial measurement device according to claim 1, characterized in that, The mounting surface is provided with a mounting portion that protrudes towards the outside of the housing, and an arrangement space is formed between the mounting portion and the mounting surface.

6. The inertial measurement device according to claim 5, characterized in that, The mounting surface has several mounting portions at opposite ends. Each mounting portion has a mounting point and / or a guide post. The mounting point is used for fastener connection so that the inertial measurement device and the body of the mobile device are connected to each other through the fastener. The guide post is used to provide guidance when the connector is inserted into the body of the mobile device.

7. The inertial measurement device according to claim 6, characterized in that, The guide post includes a first guide post and a second guide post, the first guide post and the second guide post having different diameters.

8. The inertial measurement device according to claim 1, characterized in that, The outer surface of the housing is provided with a clearance groove.

9. A mobile device, characterized in that, The device includes a body and an inertial measurement unit as described in any one of claims 1-8, wherein the body is provided with a connector that is connected to a plug of the inertial measurement unit to enable the inertial measurement unit to measure the inertial parameters of the mobile device.

10. The mobile device according to claim 9, characterized in that, The hardness of the housing of the inertial measurement device is greater than that of the body.

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