Navigation positioning device

Abstract

The utility model provides a navigation positioning device, comprising a housing which comprises a bottom shell and an upper cover, and the bottom shell is provided with a plurality of groups of mounting holes to be connected with the upper cover; the navigation control circuit board is arranged in the bottom shell and comprises an MCU processor, a first satellite positioning module, a second satellite positioning module, an IMU plug connector and a main plug connector, the number of the IMU modules is at least two, one IMU module is connected with the IMU plug connector in an inserted mode, and the other IMU module is connected to the main plug connector in an inserted mode; and the heat dissipation structure is arranged in the bottom shell and comprises a heat conduction structure and a heat dissipation fan, and the heat conduction structure is connected with the navigation control circuit board. The cost of the two IMU modules is low, the plugging mode is simple, the efficiency is high, the heat dissipation structure ensures that electronic components work at a healthy temperature, the service life of the electronic components is prolonged, and large-scale production can be achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of navigation and positioning, and in particular to a navigation and positioning device. Background Art

[0002] With the continuous development of autonomous driving technology, accurate positioning and orientation systems are essential for achieving L3 autonomous driving. However, traditional high-precision positioning and orientation systems are usually expensive and complex, which limits their application in mass production. Therefore, a low-cost, high-performance combined navigation positioning and orientation system is needed that can meet the requirements of L3 autonomous driving and provide reliable positioning and orientation functions.

[0003] In the prior art, IMU is one of the important components of the integrated navigation system, which usually includes a three-axis accelerometer and a three-axis gyroscope, which are used to measure the linear acceleration and angular velocity changes of the vehicle in three directions. Similar products on the market currently generally use IMU modules with relatively good performance in all three axes, which are expensive. At the same time, the IMU is connected to the integrated navigation system by wired connection, which relies on manual assembly, resulting in low assembly efficiency and is not conducive to large-scale mass production. Global Satellite Positioning (GNSS) module: The GNSS module is one of the core components of the integrated navigation system. It can receive satellite signals from global positioning systems (such as Beidou, GPS, GLONASS, Galileo, etc.). The navigation system generally uses MCU (Microcontroller Unit) as the processor. In addition, the hardware that can realize positioning and orientation functions on the market is usually GNSS board, which is relatively expensive and cannot meet the large-scale mass production needs of intelligent driving. When electronic components are used in the car body, they will generate heat and will also be affected by the temperature inside the car. Excessive temperature can easily cause damage to electronic components and affect subsequent use. Utility Model Content

[0004] The utility model aims to solve at least one of the problems existing in the prior art, namely, low assembly efficiency, being unfavorable for large-scale production, expensive GNSS boards and cards, poor heat dissipation, and easy damage to electronic components, and to provide a device which is easier to assemble, more efficient, and can be mass-produced with better heat dissipation.

[0005] Therefore, the utility model provides a navigation and positioning device.

[0006] The navigation and positioning device proposed in the utility model comprises:

[0007] A shell, the shell includes a bottom shell and an upper cover, the bottom shell is provided with a plurality of mounting holes for connection with the upper cover; a navigation control circuit board, the navigation control circuit board is arranged in the bottom shell, and includes an MCU processor, a first satellite positioning module, a second satellite positioning module, an IMU connector, and a main connector, the number of IMU modules is set to at least two groups, one of which is plugged into the IMU connector, and the remaining group is plugged into the main connector; a heat dissipation structure, the heat dissipation structure is arranged in the bottom shell, and includes a heat conductive structure and a heat dissipation fan, and the heat conductive structure is connected to the navigation control circuit board.

[0008] The navigation and positioning device proposed in the utility model includes: a housing, a navigation control circuit board, and a heat dissipation structure. Mounting holes are provided at corresponding positions of the bottom shell and the upper cover, and the two can be fixed as a closed whole. The mounting holes are provided at least at the four corners of the corresponding positions of the two. A mounting groove is formed in the bottom shell to clamp the navigation control circuit board so that it is fixed in the bottom shell. A buckle can also be provided in the bottom shell to fix the navigation control circuit board, thereby improving the stability of the overall structure. The MCU processor can select the MCU hardware finished product available on the market. The first satellite positioning module and the second satellite positioning module can form a dual GNSS module, which can greatly reduce the overall cost of the system while ensuring the positioning and orientation performance. The IMU module avoids the use of expensive high-precision IMU sensor modules by plugging with IMU connectors and main connectors. The plug-in IMU module with two IMUs is used to ensure that the safety level can reach ASIL-B (Automotive Safety Integrity Level B), reducing the cost of IMU. At the same time, it can achieve rapid installation and calibration on the production line, and the assembly time is reduced from the original 30 seconds to less than 5 seconds, which greatly reduces the cost of L3 level autonomous driving integrated navigation system. The heat dissipation structure includes a conduction fan, a heat dissipation fan, a heat pipe or a heat conduction plate, which transfers the heat of the electronic components to the heat pipe or heat conduction plate. The conduction fan blows the hot air to the heat dissipation fan. The heat dissipation fan is set at the heat dissipation port of the shell to blow out the hot air to ensure that the electronic components work at a lower temperature and avoid damage to the electronic components due to excessive temperature, which affects subsequent use.

[0009] It can be seen that the two plug-in IMU modules avoid the use of expensive high-precision IMU sensor modules, have low cost, simple plug-in method and high efficiency. MCU selects cheaper domestic MCU processors on the premise of ensuring its functions, which has low cost. Dual GNSS modules have low cost and good positioning and orientation functions. The heat dissipation structure can ensure that electronic components work at a healthy temperature, increase the service life of electronic components, and can be mass-produced.

[0010] The navigation and positioning device according to the above technical solution of the utility model may also have the following additional technical features:

[0011] In the above technical solution, the heat-conducting structure includes a heat-conducting plate and a heat sink connected thereto, and the heat-conducting plate is connected to the navigation control circuit board.

[0012] In this technical solution, the heat conducting plate is connected to each electrical component in the navigation control circuit board to transfer the heat of each electrical component to the heat conducting plate and then to the heat sink, thereby improving the heat dissipation effect of each electrical component in the device and avoiding damage to each electrical component due to excessive temperature, affecting subsequent use.

[0013] In the above technical solution, the bottom shell is provided with a heat dissipation opening, and the heat dissipation fans are provided in a plurality of groups at the heat dissipation opening.

[0014] In this technical solution, the number of heat dissipation openings is adapted to the number of heat dissipation fans, and dustproof nets are also provided at the heat dissipation openings to prevent dust from entering the device and affecting the fans or electrical components in the bottom shell.

[0015] In the above technical solution, the bottom shell is also provided with a fixing hole, and the fixing hole can be connected to the IMU module.

[0016] In this technical solution, the number of fixing holes is set to at least four groups, which are arranged at the four corners of the IMU connector to connect with the IMU module. Connection holes are provided at the positions of the IMU module corresponding to the fixing holes to fix the four corners of the IMU module on the IMU connector, thereby improving the stability of the overall structure.

[0017] In the above technical solution, the first satellite positioning module is provided with a first satellite antenna, and the second satellite positioning module is provided with a second satellite antenna.

[0018] In this technical solution, the first satellite positioning module, the first satellite antenna and the second satellite positioning module, the second satellite antenna form a dual GNSS module. When only one of the two GNSS modules is used, the real-time original observation data can form an absolute positioning and orientation system of a single antenna in a dynamic environment, thereby improving the flexibility of the product to meet different forms.

[0019] In the above technical solution, the bottom shell is also provided with a first groove for clamping the first satellite antenna, and the first satellite antenna is connected to the first satellite positioning module.

[0020] In this technical solution, the first groove is arranged on one side of the bottom shell, and the shape of the groove is adapted to the shape of the first satellite antenna to improve the clamping effect thereof. The first satellite line and the first satellite module constitute a first positioning module which can receive satellite signals from the global positioning system (such as Beidou, GPS, GLONASS, Galileo, etc.). The overall module has high sensitivity and fast signal capture and tracking capabilities.

[0021] In the above technical solution, the bottom shell is also provided with a second groove for clamping the second satellite antenna, and the second satellite antenna is connected to the second satellite positioning module.

[0022] In this technical solution, the second groove is arranged on one side of the bottom shell at a certain distance from the first groove. The shape of the second groove is adapted to the shape of the second satellite antenna to improve the clamping effect thereof. The second satellite antenna and the second satellite positioning module constitute a second positioning module. The first positioning module and the second positioning module are two independent low-cost modules. The dual positioning modules perform positioning work at the same time, which can greatly reduce the overall cost of the system while ensuring the positioning and orientation performance.

[0023] In any of the above technical solutions, the navigation control circuit board is provided with a power supply, and the bottom shell is also provided with a main connection groove.

[0024] In this technical solution, the power supply can supply power to each electronic component on the navigation control circuit board. The main connection groove is used to clamp the main connector. The main connector and the IMU module on the IMU connector form a dual IMU combination to ensure that the vehicle safety level reaches ASIL-B.

[0025] Additional aspects and advantages of the present invention will become apparent in the following description or will be understood through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0027] Figure 1 It is a schematic diagram of the navigation and positioning device of the utility model;

[0028] Figure 2 yes Figure 1 A schematic diagram of the heat dissipation structure of the navigation and positioning device shown;

[0029] Figure 3 It is a left view of the bottom cover of the navigation and positioning device of the utility model;

[0030] Figure 4 It is a schematic diagram of the housing of the navigation and positioning device of the utility model;

[0031] Figure 5 It is a schematic diagram of the upper cover of the navigation and positioning device of the utility model;

[0032] Figure 6 It is a schematic diagram of the IMU module of the navigation and positioning device of the present utility model.

[0033] in, Figures 1 to 6 The corresponding relationship between the reference numerals and the component names is as follows:

[0034] 1. Shell; 101. Bottom shell; 102. Upper cover; 103. Mounting hole; 104. Heat dissipation opening; 105. Fixing hole; 106. First groove; 107. Second groove; 108. Main connection groove; 2. Navigation control circuit board; 201. MCU processor; 202. First satellite positioning module; 203. Second satellite positioning module; 204. IMU connector; 205. Main connector; 206. IMU module; 207. First satellite antenna; 208. Second satellite antenna; 209. Power supply; 3. Heat dissipation structure; 301. Heat conduction structure; 302. Cooling fan; 303. Heat conduction plate; 304. Heat sink. DETAILED DESCRIPTION

[0035] In order to more clearly understand the above-mentioned purpose, features and advantages of the utility model, the utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0036] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the protection scope of the present invention is not limited to the specific embodiments disclosed below.

[0037] Refer to the following Figures 1 to 6 To describe the navigation and positioning device provided according to some embodiments of the present utility model.

[0038] Some embodiments of the present application provide a navigation and positioning device.

[0039] like Figures 1 to 6 As shown, the first embodiment of the utility model provides a navigation and positioning device, comprising:

[0040] A shell 1, wherein the shell 1 includes a bottom shell 101 and an upper cover 102, wherein the bottom shell 101 is provided with a plurality of mounting holes 103 for connection with the upper cover 102; a navigation control circuit board 2, wherein the navigation control circuit board 2 is arranged in the bottom shell 101, and includes an MCU processor 201, a first satellite positioning module 202, a second satellite positioning module 203, an IMU connector 204, and a main connector 205, wherein the number of IMU modules 206 is set to at least two groups, wherein one group is plugged into the IMU connector 204, and the remaining group is plugged into the main connector 205; a heat dissipation structure 3, wherein the heat dissipation structure 3 is arranged in the bottom shell 101, and includes a heat conducting structure 301 and a heat dissipation fan 302, wherein the heat conducting structure 301 is connected to the navigation control circuit board 2.

[0041] The navigation and positioning device proposed in the utility model includes: a housing 1, a navigation control circuit board 2, and a heat dissipation structure 3. Mounting holes 103 are provided at corresponding positions of the bottom shell 101 and the upper cover 102, so that the two can be fixed as a closed whole. The mounting holes 103 are at least provided at the four corners of the corresponding positions of the two. A mounting groove is formed in the bottom shell 101 to clamp the navigation control circuit board 2 so that it is fixed in the bottom shell 101. A buckle can also be provided in the bottom shell 101 to fix the navigation control circuit board 2, thereby improving the stability of the overall structure. The MCU processor can select the MCU hardware finished product available on the market. The first satellite positioning module 202 and the second satellite positioning module 203 can form a dual GNSS module to simultaneously output the original observation information. The calculation of the absolute position and direction in static and dynamic environments is implemented in the MCU processor 201, which can greatly reduce the overall cost of the system while ensuring the positioning and orientation performance. The IMU module 206 avoids the use of expensive high-precision IMU sensor modules by plugging with the IMU connector 204 and the main connector 205. The plug-in IMU module 206 composed of two IMUs is used to ensure that the safety level can reach ASIL-B (Automotive Safety Integrity Level B), reducing the cost of the IMU. At the same time, it can achieve rapid installation and calibration on the production line, and the assembly time is increased from the original 30 seconds to less than 5 seconds, which greatly reduces the cost of the L3 level automatic driving combined navigation system. The heat dissipation structure 3 includes a conduction fan, a heat dissipation fan 302, and a heat pipe or heat conduction plate 303, which transfers the heat of the electronic components to the heat pipe or heat conduction plate 303. The conduction fan blows the hot air to the heat dissipation fan 302. The heat dissipation fan 302 is set at the heat dissipation port of the housing 1 to blow out the hot air to ensure that the electronic components work at a lower temperature and avoid damage to the electronic components due to excessive temperature, which affects subsequent use.

[0042] It can be seen that the two plug-in IMU modules 206 avoid using expensive high-precision IMU sensor modules, have low cost, simple plug-in method, and high efficiency. The MCU selects a relatively cheap domestic MCU processor 201 on the premise of ensuring its function, which has low cost. The dual GNSS module has low cost and good positioning and orientation functions. The heat dissipation structure 3 can ensure that the electronic components work at a healthy temperature, increase the service life of the electronic components, and can be mass-produced.

[0043] The second embodiment of the present utility model provides a navigation and positioning device, and based on the first embodiment, as Figures 1 to 6 As shown, the heat-conducting structure 301 includes a heat-conducting plate 303 and a heat sink 304 connected thereto, and the heat-conducting plate 303 is connected to the navigation control circuit board 2 .

[0044] In this embodiment, the heat conducting plate 303 is connected to each electrical component in the navigation control circuit board 2 to transfer the heat of each electrical component to the heat conducting plate 303 and then to the heat sink 304, thereby improving the heat dissipation effect of each electrical component in the device and avoiding damage to each electrical component due to excessive temperature, which affects subsequent use.

[0045] The third embodiment of the present utility model provides a navigation and positioning device, and based on any of the above embodiments, as Figures 1 to 6 As shown, the bottom shell 101 is provided with a heat dissipation opening 104 , and the heat dissipation fans 302 are provided in a plurality of groups at the heat dissipation opening 104 .

[0046] In this embodiment, the number of the heat dissipation openings 104 matches the number of the heat dissipation fans 302 , and dustproof nets are provided at the heat dissipation openings 104 to prevent dust from entering the device and affecting the fans or electrical components in the bottom case 101 .

[0047] The fourth embodiment of the present utility model provides a navigation and positioning device, and based on any of the above embodiments, as Figures 1 to 6 As shown, the bottom shell 101 is also provided with a fixing hole 105 , and the fixing hole 105 can be connected to the IMU module 206 .

[0048] In this embodiment, the number of fixing holes 105 is set to at least four groups, which are arranged at the four corners of the IMU connector 204 to connect with the IMU module 206. The IMU module 206 is provided with connecting holes at the positions corresponding to the fixing holes 105 to fix the four corners of the IMU module 206 on the IMU connector 204, thereby improving the stability of the overall structure.

[0049] The fifth embodiment of the present utility model provides a navigation and positioning device, and based on any of the above embodiments, as Figures 1 to 6 As shown, the first satellite positioning module 202 is provided with a first satellite antenna 207 , and the second satellite positioning module 203 is provided with a second satellite antenna 208 .

[0050] In this embodiment, the first satellite positioning module 202, the first satellite antenna 207 and the second satellite positioning module 203, the second satellite antenna 208 form a dual GNSS module. When only one of the two GNSS modules is used, the real-time original observation data can form an absolute positioning and orientation system of a single antenna in a dynamic environment, thereby improving the flexibility of the product to meet different forms.

[0051] The sixth embodiment of the present utility model provides a navigation and positioning device, and based on any of the above embodiments, as Figures 1 to 6As shown, the bottom shell 101 is further provided with a first groove 106 for clamping the first satellite antenna 207 , and the first satellite antenna 207 is connected to the first satellite positioning module 202 .

[0052] In this embodiment, the first groove 106 is arranged on one side of the bottom shell 101, and the shape of the groove is adapted to the shape of the first satellite antenna 207 to improve the clamping effect thereof. The first satellite line and the first satellite module constitute a first positioning module that can receive satellite signals from a global positioning system (such as Beidou, GPS, GLONASS, Galileo, etc.). The overall module has high sensitivity and fast signal capture and tracking capabilities.

[0053] The seventh embodiment of the present utility model provides a navigation and positioning device, and based on any of the above embodiments, as Figures 1 to 6 As shown, the bottom shell 101 is further provided with a second groove 107 for clamping the second satellite antenna 208 , and the second satellite antenna 208 is connected to the second satellite positioning module 203 .

[0054] In this embodiment, the second groove 107 is arranged on one side of the bottom shell 101 and is spaced a certain distance from the first groove 106. The shape of the second groove 107 is adapted to the shape of the second satellite antenna 208 to improve the clamping effect thereof. The second satellite antenna 208 and the second satellite positioning module 203 constitute a second positioning module. The first positioning module and the second positioning module are two independent low-cost modules. The dual positioning modules perform positioning work at the same time, which can greatly reduce the overall cost of the system while ensuring the positioning and orientation performance.

[0055] The eighth embodiment of the present utility model provides a navigation and positioning device, and based on any of the above embodiments, as Figures 1 to 6 As shown, the navigation control circuit board 2 is provided with a power supply 209 , and the bottom shell 101 is also provided with a main connection groove 108 .

[0056] In this embodiment, the power supply 209 can supply power to each electronic component on the navigation control circuit board 2. The main connection groove 108 is used to clamp the main connector 205. The main connector 205 and the IMU module 206 on the IMU connector 204 form a dual IMU combination to ensure that the vehicle safety level reaches ASIL-B.

[0057] In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0058] Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of this utility model should be included in the protection scope of this utility model.

Claims

1. A navigation and positioning device, characterized in that: include: A housing (1), the housing (1) comprising a bottom housing (101) and an upper cover (102), the bottom housing (101) being provided with a plurality of groups of mounting holes (103) for connection with the upper cover (102); A navigation control circuit board (2), the navigation control circuit board (2) being arranged in the bottom shell (101), comprising an MCU processor (201), a first satellite positioning module (202), a second satellite positioning module (203), an IMU plug-in connector (204), and a main connector (205); the number of IMU modules (206) being at least two groups, one of which is plugged into the IMU plug-in connector (204), and the remaining group is plugged into the main connector (205); A heat dissipation structure (3), the heat dissipation structure (3) being arranged in the bottom shell (101), comprising a heat conduction structure (301) and a heat dissipation fan (302), the heat conduction structure (301) being connected to the navigation control circuit board (2).

2. The navigation and positioning device according to claim 1, characterized in that: The heat-conducting structure (301) comprises a heat-conducting plate (303) and a heat sink (304) connected thereto, and the heat-conducting plate (303) is connected to the navigation control circuit board (2).

3. The navigation and positioning device according to claim 2, characterized in that: The bottom shell (101) is provided with a heat dissipation opening (104), and the heat dissipation fans (302) are provided in groups at the heat dissipation opening (104).

4. The navigation and positioning device according to claim 3, characterized in that: The bottom shell (101) is also provided with a fixing hole (105), and the fixing hole (105) can be connected to the IMU module (206).

5. The navigation and positioning device according to claim 1, characterized in that: The first satellite positioning module (202) is provided with a first satellite antenna (207), and the second satellite positioning module (203) is provided with a second satellite antenna (208).

6. The navigation and positioning device according to claim 1, characterized in that: The bottom shell (101) is also provided with a first groove (106) for clamping a first satellite antenna (207), and the first satellite antenna (207) is connected to the first satellite positioning module (202).

7. The navigation and positioning device according to claim 6, characterized in that: The bottom shell (101) is also provided with a second groove (107) for clamping a second satellite antenna (208), and the second satellite antenna (208) is connected to the second satellite positioning module (203).

8. The navigation and positioning device according to claim 1, characterized in that: The navigation control circuit board (2) is provided with a power supply (209), and the bottom shell (101) is also provided with a main connection groove (108).

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