Intelligent automobile millimeter wave radar teaching experiment device

Abstract

The utility model discloses an intelligent connection automobile millimeter wave radar teaching experiment device comprising a teaching panel and a box body, the upper surface of the teaching panel is provided with a millimeter wave radar, a fixed support, a data conversion module and a programmable early warning module, and the box body is internally provided with a central processing module. The output end of the millimeter-wave radar is connected with the input end of the data conversion module, the input end of the programmable early warning module is connected with the output end of the data conversion module, the data conversion module is connected with the central processing module, the millimeter-wave radar and the fixing support are of detachable structures, and the programmable early warning module is connected with the central processing module. The fixing support is used for fixing the millimeter wave radar. According to the utility model, through the integrated design of a plurality of modules, the obstacle detection experiment of the millimeter-wave radar can be realized, teachers can be effectively helped to carry out practical training teaching, students can be effectively helped to carry out operation, and the device is small and exquisite, low in cost and can be widely applied to the technical field of millimeter-wave radars.

Description

Technical Field

[0001] The utility model relates to the technical field of millimeter wave radar, in particular to a teaching experiment device for millimeter wave radar of intelligent connected vehicles. Background Technique

[0002] In intelligent connected vehicles, millimeter wave radar, as an important sensor, is used to realize the intelligent perception and autonomous driving functions of vehicles. For example, millimeter wave radar can be used to detect obstacles, pedestrians and other vehicles around the vehicle, so as to help the vehicle realize functions such as automatic obstacle avoidance and automatic parking. In addition, millimeter wave radar can also be used for communication and coordination between vehicles to realize advanced functions such as intelligent transportation and autonomous driving. At present, the teaching equipment of intelligent networked millimeter wave radar produced is all in the form of a bench for teaching. This form can allow teachers to explain the working principle of millimeter wave radar, but this teaching equipment itself is relatively large in size, which is not conducive to the operation of multiple students and has a high cost. Content of the Utility Model

[0003] In order to solve the above technical problems, the purpose of the utility model is to provide a teaching experiment device for millimeter wave radar of intelligent connected vehicles with low cost.

[0004] The technical solution adopted by the utility model is as follows:

[0005] A teaching experiment device for millimeter wave radar of intelligent connected vehicles includes a teaching panel and a box body. A millimeter wave radar, a fixed bracket, a data conversion module and a programmable warning module are arranged on the upper surface of the teaching panel. A central processing module is arranged in the box body. The output end of the millimeter wave radar is connected to the input end of the data conversion module. The input end of the programmable warning module is connected to the output end of the data conversion module. The data conversion module is connected to the central processing module. Among them, the millimeter wave radar and the fixed bracket are detachable structures, and the fixed bracket is used to fix the millimeter wave radar.

[0006] Further, the teaching experiment device also includes a box body upper cover, and the box body upper cover is hinged to one side of the box body.

[0007] Further, a display screen and a USB interface module are arranged on the inner surface of the box body upper cover. Both the data conversion module and the central processing module are connected to the USB interface module, and the input end of the display screen is connected to the output end of the central processing module.

[0008] Further, a power supply module is also arranged in the box body, and the input ends of the millimeter wave radar, the programmable warning module and the central processing module are all connected to the output end of the power supply module.

[0009] Further, a switch module is also provided on the upper surface of the teaching panel. The input end of the switch module is connected to the output end of the power supply module, and the input ends of the millimeter-wave radar, the programmable warning module, and the central processing module are all connected to the output end of the switch module.

[0010] Further, a human-computer interaction module is also provided on the upper surface of the teaching panel. The output end of the human-computer interaction module is connected to the input end of the USB interface module.

[0011] Further, a detection module is also provided on the upper surface of the teaching panel. Both the data conversion module and the USB interface module are connected to the detection module.

[0012] Further, connection terminals are also provided on the upper surface of the teaching panel. The connection terminals are used to connect the millimeter-wave radar to the CAN bus.

[0013] Further, the programmable warning module includes at least one of a buzzer and an indicator light.

[0014] Further, the detection module includes at least one of a power detection meter and an oscilloscope.

[0015] The beneficial effects of the present utility model are as follows: It includes a teaching panel and a box body. On the upper surface of the teaching panel, there are a millimeter-wave radar, a fixed bracket, a data conversion module, and a programmable warning module. Inside the box body, there is a central processing module. By taking out and fixing the millimeter-wave radar and the fixed bracket from the teaching panel, the millimeter-wave radar is used to detect obstacle information. The data conversion module converts the obstacle information into CAN bus data and sends it to the central processing module. The central processing module analyzes the CAN bus data to obtain information such as the distance, relative speed, and installation angle between the obstacle and the millimeter-wave radar. Finally, the programmable warning module performs sound and light display, and thus the millimeter-wave radar teaching experiment can be completed. Through the integrated design of multiple modules, the present utility model can realize the obstacle detection experiment of the millimeter-wave radar, which can effectively assist teachers in practical teaching and students in operation, and the device is small and low in cost. Description of the Drawings

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the following introduces the drawings required to be used in the embodiments of the present utility model. It should be understood that the drawings introduced below are only for conveniently and clearly expressing some embodiments of the technical solutions in the present utility model. For those skilled in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0017] Figure 1Block diagram of a teaching experiment device for millimeter-wave radar of an intelligent connected vehicle provided by the present utility model;

[0018] Figure 2 Overall structure schematic diagram of a teaching experiment device for millimeter-wave radar of an intelligent connected vehicle provided by the present utility model;

[0019] Figure 3 Circuit schematic diagram of the main control chip provided by the present utility model;

[0020] Figure 4 Circuit schematic diagram of the USB download circuit provided by the present utility model;

[0021] Figure 5 Circuit schematic diagram of the drive circuit provided by the present utility model;

[0022] Figure 6 Structure schematic diagram of the upper cover of the box body provided by the present utility model;

[0023] Figure 7 Internal structure schematic diagram of the box body provided by the present utility model;

[0024] Figure 8 Upper surface structure schematic diagram of the teaching panel provided by the present utility model.

[0025] Reference numerals: 1, teaching panel; 2, box body; 3, upper cover of the box body; 11, millimeter-wave radar; 12, fixing bracket; 13, human-computer interaction module; 14, switch module; 15, data conversion module; 16, programmable warning module; 17, connection terminal; 18, detection module; 21, power supply module; 22, central processing module; 31, display screen; 32, USB interface module; U5.1, main control chip; P-UART, first UART interface; P-UART1, second UART interface; H3, serial communication interface; USB1, programming interface; U7, flashing chip; U6, CAN chip; U2, first drive chip; U3, second drive chip; U4, third drive chip. Detailed implementation manners

[0026] The embodiments of the present utility model will be described in detail below. The examples of the embodiments are shown in the accompanying drawings, in which the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions from beginning to end. The embodiments described below by referring to the accompanying drawings are exemplary and are only used to explain the present utility model and should not be construed as a limitation to the present utility model.

[0027] Intelligent connection is the combination of intelligent vehicles and the Internet of Vehicles. By equipping sensors, actuators, controllers, and integrating modern communication and network technologies, it realizes the intelligent information sharing and interconnection among vehicles, people, roads, and the background, thus achieving a new generation of automotive technology for safe, comfortable, energy-saving, and efficient driving.

[0028] Millimeter-wave radar is a detection radar operating in the millimeter-wave band (usually in the 30 - 300 GHz frequency band). It has the characteristics of small size, light weight, high spatial resolution, strong penetration ability (especially in environments such as fog, smoke, and dust), strong anti-interference and anti-stealth capabilities. Millimeter-wave radar can distinguish and identify very small targets, and can simultaneously identify multiple targets, and has imaging capabilities, so it is widely used in various daily scenarios.

[0029] In intelligent connected vehicles, millimeter-wave radar is an important sensor for realizing the intelligent perception and autonomous driving functions of vehicles. For example, millimeter-wave radar can be used to detect obstacles, pedestrians, and other vehicles around the vehicle, thereby helping the vehicle achieve functions such as automatic obstacle avoidance and automatic parking. In addition, millimeter-wave radar can also be used for communication and coordination between vehicles to achieve advanced functions such as intelligent transportation and autonomous driving.

[0030] Currently, the intelligent network-connected millimeter-wave radar teaching equipment produced is all in the form of a test bench for teaching. This form allows teachers to explain the working principle of millimeter-wave radar, but this teaching equipment itself is relatively large in size, not conducive to multiple students to operate, and has a high cost.

[0031] Therefore, the embodiment of the present utility model proposes an intelligent connected vehicle millimeter-wave radar teaching experiment device, which includes a teaching panel and a box body. The upper surface of the teaching panel is provided with a millimeter-wave radar, a fixed bracket, a data conversion module, and a programmable warning module. A central processing module is arranged in the box body. By removing and fixing the millimeter-wave radar and the fixed bracket from the teaching panel, detecting obstacle information through the millimeter-wave radar, converting the obstacle information into CAN bus data through the data conversion module and sending it to the central processing module, parsing the CAN bus data by the central processing module to obtain information such as the distance, relative speed, and installation angle between the obstacle and the millimeter-wave radar, and finally performing sound and light display through the programmable warning module, the millimeter-wave radar teaching experiment can be completed. The present utility model can realize the obstacle detection experiment of millimeter-wave radar through the integrated design of multiple modules, which can effectively help teachers with practical teaching and students with operation, and the device is small and inexpensive.

[0032] Refer to Figure 1 and Figure 2 , Figure 1 For the structural block diagram of the intelligent connected vehicle millimeter-wave radar teaching experiment device, Figure 2It is a schematic diagram of the overall structure of a millimeter-wave radar teaching experiment device for intelligent connected vehicles. A millimeter-wave radar teaching experiment device for intelligent connected vehicles includes a teaching panel 1 and a box body 2. On the upper surface of the teaching panel 1, there are a millimeter-wave radar 11, a fixing bracket 12, a data conversion module 15, and a programmable warning module 16. Inside the box body 2, there is a central processing module 22. The output end of the millimeter-wave radar 11 is connected to the input end of the data conversion module 15. The input end of the programmable warning module 16 is connected to the output end of the data conversion module 15. The data conversion module 15 is connected to the central processing module 22. Among them, the millimeter-wave radar 11 and the fixing bracket 12 are detachable structures, and the fixing bracket 12 is used to fix the millimeter-wave radar 11.

[0033] Specifically, the millimeter-wave radar 11 is a commonly used 24G pre-collision radar. The radar model used in the embodiment of the present utility model is CAR28F, which is powered by a 12V power supply, and the output information is transmitted using a CAN bus.

[0034] The fixing bracket 12 is used to fix the millimeter-wave radar 11 when it is taken out for use. The millimeter-wave radar 11 needs to be fixed during testing.

[0035] The central processing module 22 is used to install corresponding software to read and analyze the obstacle information collected by the millimeter-wave radar 11, and then complete the forward pre-collision experiment in the vehicle in combination with the programmable warning module 16, and code modification programming can be carried out. The central processing module 22 can be a microcomputer of model Raspberry Pi 4B, but is not limited thereto.

[0036] The data conversion module 15 is used to convert the data detected by the millimeter-wave radar 11 into data on the CAN bus so that the central processing module 22 can read and analyze it. The data conversion module 15 in the embodiment of the present utility model is a USB to CAN interface, which is used to convert the obstacle information (including distance, relative speed, installation angle, etc.) from the USB interface into the data format on the CAN bus.

[0037] Further as an optional implementation, the programmable warning module 16 includes at least one of a buzzer and an indicator light.

[0038] Specifically, the programmable warning module 16 is used for the function demonstration of the warning system, which includes a USB download interface, a three-color indicator light, and a buzzer. The USB download interface is used for program flashing of the programmable warning device 16. The three-color indicator light is used to display different levels of warnings, and the buzzer is used to issue alarms.

[0039] Among them, the programmable warning module 16 includes a main control chip, a USB download circuit, and a driving circuit, as Figure 3The circuit schematic diagram of the main control chip is shown. The main control chip U5.1 can select a chip with the model number STM32F103R8T6. As Figure 4 The circuit schematic diagram of the USB download circuit is shown. It includes the first UART interface P-UART, the second UART interface P-UART1, and the serial communication interface H3. The first UART interface P-UART is mainly used for flashing the chip program during factory production. The second UART interface P-UART1 and the serial communication interface H3 are used for serial communication with other modules. The programming interface USB1 is a USB programming interface, which is used for debugging and program flashing by later developers. It flashes the program through the flashing chip U7, and the flashing chip U7 can select a chip with the model number CH340X. The CAN chip U6 is used for CAN communication, and it can select a chip with the model number TAJ1051. As Figure 5 The circuit schematic diagram of the drive circuit is shown. The first drive chip U2, the second drive chip U3, and the third drive chip U4 are used to drive electrical devices such as LED lights, buzzers, and relays. They can select a chip with the model number ULN2803. In the embodiment of the present utility model, the programmable warning module 16 mainly uses the programming interface USB1. Students can flash according to the modified program by themselves and download the program to the main control chip U5.1. The CAN chip U6 is mainly used to read millimeter-wave radar data, and one group of drive chips is used to control the lights and buzzers for warning prompts.

[0040] Referring to Figure 2 , as a further optional implementation, the teaching experiment device further includes a box upper cover 3, and the box upper cover 3 is hinged to one side of the box 2.

[0041] Referring to Figure 1 and Figure 6 , Figure 6 is the structural schematic diagram of the box upper cover. As a further optional implementation, a display screen 31 and a USB interface module 32 are provided on the inner surface of the box upper cover 3. The data conversion module 15 and the central processing module 22 are both connected to the USB interface module 32, and the input end of the display screen 31 is connected to the output end of the central processing module 22.

[0042] Specifically, the display screen 31 is used to display the interface in the central processing module 22, which is convenient for teachers and students to operate.

[0043] The USB interface module 32 is used to connect the central processing module 22 with the human-computer interaction module 13, the data conversion module 15, and the programmable warning module 16. The USB interface module 32 includes five USB interfaces and all are universal interfaces. The human-computer interaction module 13, the data conversion module 15, and the programmable warning module 16 can be connected to any 3 of these interfaces for use.

[0044] Reference Figure 1 and Figure 7 , Figure 7 is a schematic diagram of the internal structure of the box. Further, as an optional implementation, a power supply module 21 is also provided inside the box 2. The input ends of the millimeter-wave radar 11, the programmable warning module 16, and the central processing module 22 are all connected to the output end of the power supply module 21.

[0045] Specifically, the power supply module 21 is used to provide stable power support for the millimeter-wave radar 11, the programmable warning module 16, and the central processing module 22. The input ends of these modules are all connected to the output end of the power supply module 21 to ensure the power supply required for the normal operation of the system. The power supply module 21 can use a 12V lithium battery, but is not limited to this.

[0046] Reference Figure 1 and Figure 8 , Figure 8 is a schematic diagram of the upper surface structure of the teaching panel. Further, as an optional implementation, a switch module 14 is also provided on the upper surface of the teaching panel 1. The input end of the switch module 14 is connected to the output end of the power supply module 21. The input ends of the millimeter-wave radar 11, the programmable warning module 16, and the central processing module 22 are all connected to the output end of the switch module 14.

[0047] Specifically, the switch module 14 obtains power from the power supply module 21 and controls the power supply of the millimeter-wave radar 11, the programmable warning module 16, and the central processing module 22 as a master switch. When the user activates the switch module 14, these modules can obtain power supply, thus ensuring that the entire teaching panel 1 system can be started and operated normally.

[0048] Reference Figure 1 and Figure 8 , further as an optional implementation, a human-computer interaction module 13 is also provided on the upper surface of the teaching panel 1. The output end of the human-computer interaction module 13 is connected to the input end of the USB interface module 32.

[0049] Specifically, the human-computer interaction module 13 integrates a mouse and a keyboard and is connected to the central processing module 22 through the USB interface module 32, and is used for teachers or students to perform operations such as software running and code modification, so as to interact with the central processing module 22.

[0050] Reference Figure 1 and Figure 8 , further as an optional implementation, a detection module 18 is also provided on the upper surface of the teaching panel 1. Both the data conversion module 15 and the USB interface module 32 are connected to the detection module 18.

[0051] Further as an optional implementation, the detection module 18 includes at least one of a power detection meter and an oscilloscope.

[0052] Specifically, the detection module 18 may include a power detection meter and an oscilloscope. The power detection meter is used to monitor the voltage condition in the internal circuit of the teaching panel 1 in real time to ensure stable and reliable power supply. The oscilloscope is used to read the CAN bus signal waveform for data analysis.

[0053] Refer to Figure 1 and Figure 8 Furthermore, as an optional implementation, a connection terminal 17 is also provided on the upper surface of the teaching panel 1. The connection terminal 17 is used to connect the millimeter-wave radar 11 to the CAN bus.

[0054] Specifically, the upper surface of the teaching panel 1 is equipped with dedicated connection terminals 17. These connection terminals 17 serve as interfaces, and there is a jumper plug between them, which can connect or disconnect the physical connections between the millimeter-wave radar 11, the CAN bus, and the power supply module 21.

[0055] Furthermore, a fixed connection handle (not shown in the figure) is also provided on the outer side of the box body 2, which is convenient for teachers or students to move the entire device.

[0056] In summary, the teaching operation process of an intelligent connected vehicle millimeter-wave radar teaching experiment device of the present utility model is as follows: When a teacher is teaching or a student is training, place this device on a table, turn on the device power switch module, take out the millimeter-wave radar and the fixed bracket, place the fixed bracket on a flat surface or in front of the car bumper, then fix the millimeter-wave radar on the fixed bracket, connect the lines corresponding to the millimeter-wave radar and the connection terminal, then place an obstacle in front of the millimeter-wave radar, open the millimeter-wave radar software in the central processing module, and at this time, the obstacle information detected by the millimeter-wave radar can be seen. Use a practical measurement tool to measure information such as the installation angle of the millimeter-wave radar and the distance between the obstacle and the millimeter-wave radar, and error correction and calibration can be performed.

[0057] Among them, the processing process of the obstacle information by this intelligent connected vehicle millimeter-wave radar teaching experiment device is as follows: The millimeter-wave radar detects the obstacle information and sends it to the data conversion module through the CAN bus. Then, through the data conversion module and the USB interface module, the obstacle information is converted into a data format that can be parsed by the central processing module. The central processing module parses the converted obstacle information according to the data protocol to obtain information such as the distance, relative speed, and angle between the millimeter-wave radar and the obstacle, and then judges whether it is less than the set distance or the collision time. Finally, according to the judgment result, the central processing module sends an instruction to the programmable warning module to control the sound and light display.

[0058] Compared with the existing teaching experiment devices, in the present utility model, the millimeter-wave radar and the fixed bracket are taken out and fixed from the teaching panel. The millimeter-wave radar is used to detect obstacle information. The data conversion module converts the obstacle information into CAN bus data and sends it to the central processing module. The central processing module analyzes the CAN bus data to obtain information such as the distance, relative speed, and installation angle between the obstacle and the millimeter-wave radar. Finally, the programmable warning module performs audible and visual displays, and thus the teaching experiment of the millimeter-wave radar can be completed. Through the integrated design of multiple modules, the present utility model can realize the obstacle detection experiment of the millimeter-wave radar, which can effectively help teachers conduct practical training teaching on intelligent connected millimeter-wave radar sensors. The operation is safe and convenient, and the device is small and inexpensive.

[0059] In the description of the present utility model, the meaning of "several" is one or more, the meaning of "multiple" is more than two, and understandings such as "greater than", "less than", "exceeding", etc. do not include the present number, and understandings such as "above", "below", "within", etc. include the present number. If there is a description of "first" and "second", it is only for the purpose of distinguishing technical features and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features or implicitly indicating the sequence relationship of the indicated technical features.

[0060] In the present utility model, unless otherwise clearly specified and limited, terms such as "installed", "connected", "connected to", "fixed" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components or the interaction relationship between two components, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0061] In the description of this specification, the descriptions referring to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples" mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic descriptions 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 a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0062] The preferred embodiments of the present utility model have been specifically described above. However, the present utility model is not limited to the described embodiments. Those skilled in the art can make various equivalent deformations or substitutions without departing from the spirit of the present utility model, and these equivalent deformations or substitutions are all included within the scope defined by the claims of this application.

Claims

1. A teaching experimental device for intelligent connected car millimeter wave radar, characterized by: It includes a teaching panel and a box body, wherein a millimeter-wave radar, a fixed bracket, a data conversion module and a programmable early warning module are arranged on the upper surface of the teaching panel, a central processing module is arranged in the box body, the output end of the millimeter-wave radar is connected to the input end of the data conversion module, the input end of the programmable early warning module is connected to the output end of the data conversion module, and the data conversion module is connected to the central processing module, wherein the millimeter-wave radar and the fixed bracket are detachable structures, and the fixed bracket is used to fix the millimeter-wave radar.

2. The intelligent connected car millimeter wave radar teaching experimental device according to claim 1 is characterized by: The teaching experiment device also includes a box upper cover, which is hinged to one side of the box.

3. The intelligent connected car millimeter wave radar teaching experimental device according to claim 2 is characterized by: The inner surface of the upper cover of the box body is provided with a display screen and a USB interface module, the data conversion module and the central processing module are both connected to the USB interface module, and the input end of the display screen is connected to the output end of the central processing module.

4. The intelligent connected car millimeter wave radar teaching experimental device according to claim 1 is characterized by: A power supply module is also provided in the box, and the input ends of the millimeter wave radar, the programmable early warning module and the central processing module are all connected to the output end of the power supply module.

5. The intelligent connected car millimeter wave radar teaching experimental device according to claim 4 is characterized by: A switch module is also provided on the upper surface of the teaching panel, the input end of the switch module is connected to the output end of the power supply module, and the input ends of the millimeter wave radar, the programmable early warning module and the central processing module are all connected to the output end of the switch module.

6. The intelligent connected car millimeter wave radar teaching experimental device according to claim 3 is characterized by: A human-computer interaction module is also arranged on the upper surface of the teaching panel, and an output end of the human-computer interaction module is connected to an input end of the USB interface module.

7. The intelligent connected car millimeter wave radar teaching experimental device according to claim 3 is characterized by: A detection module is also provided on the upper surface of the teaching panel, and the data conversion module and the USB interface module are both connected to the detection module.

8. The intelligent connected car millimeter wave radar teaching experimental device according to claim 1 is characterized by: The upper surface of the teaching panel is also provided with connecting terminals, and the connecting terminals are used to connect the millimeter wave radar and the CAN bus.

9. The intelligent connected car millimeter wave radar teaching experimental device according to claim 1, characterized in that: The programmable warning module includes at least one of a buzzer and an indicator light.

10. The intelligent connected car millimeter wave radar teaching experimental device according to claim 7, characterized in that: The detection module includes at least one of a power supply detection meter and an oscilloscope.

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