Acousto-optic fusion sensor suitable for 24G-79G working frequency millimeter wave radar and control panel thereof

Abstract

The utility model relates to an acousto-optic fusion sensor and a control panel suitable for 24G-79G working frequency millimeter wave radar, and relates to the technical field of reversing radar, the acousto-optic fusion sensor comprises a video line, a power line, a control panel and a camera, the video line is connected with the control panel and the camera, the power line is electrically connected with the control panel and the camera, and the control panel is electrically connected with the camera. The video line and the power line are connected with the camera and the control panel through a connector. The problems that in the prior art, a vehicle-mounted image and radar control panel is complex in design, high in production cost and difficult to maintain and detect are solved, and the vehicle-mounted image and radar control panel has the advantages of being indirect in circuit, high in reliability and easy to produce in batches.

Description

Technical Field

[0001] This invention relates to the field of reversing radar technology, specifically to an acoustic-optical fusion sensor and its control board applicable to millimeter-wave radar operating in the 24G-79G frequency range. Background Technology

[0002] Vehicle imaging and ultrasonic radar are widely used in automobiles. Improving the accuracy of vehicle imaging and radar is an important issue. However, as the accuracy increases, the integration and complexity of the corresponding hardware systems also increase. Furthermore, as the demand for performance increases, the cost of hardware such as controllers will also increase. Therefore, some high-performance vehicle detectors suffer from problems such as complex design, high production costs, and difficulties in maintenance and testing. Summary of the Invention

[0003] This invention proposes an acoustic-optical fusion sensor and its control board applicable to millimeter-wave radar operating in the 24G-79G range. It solves the problems of complex design, high production cost, and difficult maintenance and testing of vehicle imaging and radar control boards in the prior art. It features circuit indirection, high reliability, and ease of mass production.

[0004] The technical solution of the present invention is as follows:

[0005] An acoustic-optical fusion sensor applicable to millimeter-wave radar operating in the 24G-79G frequency range includes a video cable, a power cable, a control board, and a camera. The video cable connects the control board and the camera, and the power cable is electrically connected to the control board and the camera. The video cable and the power cable are connected to the camera and the control board via connectors. The camera and the control board are separate components.

[0006] A control board for an acoustic-optical fusion sensor includes a circuit board and an acoustic-optical fusion sensing system soldered onto the circuit board. The acoustic-optical fusion sensing system includes a main control module and its supporting circuitry. The acoustic-optical fusion sensing system comprises a power conversion module, a storage module, a video driver module, an image sensing module, and a radar interface. The power conversion module is externally connected to a power supply line to provide power to the acoustic-optical fusion sensing system. The storage module is signal-connected to the main control module and uses non-volatile memory. The input signal of the video driver module is connected to the main control module, and the output terminal of the video driver module is externally connected to a video output device. The input terminal of the video driver module is connected to the main control module, and the image sensing module is signal-connected to the main control module.

[0007] The working principle and beneficial effects of this invention are as follows:

[0008] An acoustic-optical fusion sensor applicable to millimeter-wave radar operating in the 24G-79G range. This solution modifies the existing integrated design of the control board and camera, adopting a separate structure for the camera and control board. On the one hand, this allows for separate fabrication and soldering during production, reducing operations on a single board and thus improving the yield rate. On the other hand, since the camera needs to face outwards during use, this design reduces the need for camera control, making it more convenient to place the camera in a car. Simultaneously, the control board can be placed away from the vehicle body. Because the control board has tightly connected wiring and many electrical components, it is easily damaged in complex environments; this design protects the control board. Attached Figure Description

[0009] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0010] Figure 1 This is the circuit schematic diagram of the main control module in this application;

[0011] Figure 2 This is the circuit schematic of the 1.8V voltage regulator module in this application;

[0012] Figure 3 This is the circuit schematic of the 5V voltage regulator module in this application;

[0013] Figure 4 This is the circuit schematic of the storage module in this application;

[0014] Figure 5 The circuit schematic of the video driver module in this application.

[0015] Figure 6 This is the circuit schematic of the action triggering module in this application;

[0016] Figure 7 This is a circuit schematic diagram of the image sensing module in this application;

[0017] Figure 8 This is the circuit schematic of the 2.8V voltage regulator module in this application;

[0018] Figure 9 This is the circuit schematic of the 3.3V voltage regulator module in this application;

[0019] Figure 10 This is the circuit schematic diagram of the radar interface in this application;

[0020] Figure 11 This is the circuit schematic diagram of the interface in this application. Detailed Implementation

[0021] The technical solutions of the present invention will be clearly and completely described below with reference to the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0022] An acoustic-optical fusion sensor applicable to millimeter-wave radar operating in the 24G-79G frequency range includes a video cable, a power cable, a control board, and a camera. The video cable connects the control board and the camera, and the power cable is electrically connected to both the control board and the camera. The video cable and the power cable are connected to the camera and the control board via connectors. The camera and the control board are separate components.

[0023] The camera and control board of this application are designed as separate structures. On the one hand, they can be manufactured and soldered separately during production, reducing the operation of a single board and thus improving the yield rate. On the other hand, the camera needs to face outwards during use, which reduces the need for camera control. This design makes it more convenient to place the camera in a car, and the control board can be placed away from the car body. Since the control board has tight wiring connections and many electrical components, it is easily damaged in complex environments. This design can protect the control board.

[0024] A control board for an acoustic-optical fusion sensor includes a circuit board and an acoustic-optical fusion sensing system soldered onto the circuit board. The acoustic-optical fusion sensing system includes a main control module and its supporting circuitry. The acoustic-optical fusion sensing system comprises a power conversion module, a storage module, a video driver module, an image sensing module, and a radar interface. The power conversion module is externally connected to a power supply line to provide power to the acoustic-optical fusion sensing system. The storage module is signal-connected to the main control module and uses non-volatile memory. The input signal of the video driver module is connected to the main control module, and the output terminal of the video driver module is externally connected to a video output device. The input terminal of the video driver module is connected to the main control module. The image sensing module is signal-connected to the main control module. (See attached specification) Figure 1 As shown, the GPIO8 and GPIO9 pins of the main control module are connected to an external camera device, the XO and XI pins of the main control module are connected to a crystal oscillator, and the RESETB pin of the main control module is connected to a radar interface. The chip used in the main control module is the XC5323A.

[0025] The power conversion module includes a 1.8V voltage regulator module, a 5V voltage regulator module, a 2.8V voltage regulator module, and a 3.3V voltage regulator module. The external input voltage of this application is 5V. The external 5V voltage source is converted into a stable output DC 5V voltage source by the voltage regulator ME3508, and then converted into a 1.8V voltage source by the chip ME6211A18, a 2.8V voltage source by the chip ME6232A28, and a 3.3V voltage source by the chip ME6232A33.

[0026] As per the instruction manual Figure 2 As shown, the 1.8V regulated input is powered by the main control module, and the output of the 1.8V regulated module serves as a 1.8V voltage source, as per the attached manual. Figure 3 As shown, the input of the 5V voltage regulator module is the power supply line. Although the input of the 5V voltage regulator module in the figure is 5V, this is an ideal state. Since the module is directly connected to the power supply line, but due to the many factors affecting the external power supply, the actual input of the module is generally around 3.2-5V. Therefore, a 5V voltage regulator module is needed to provide a stable voltage source for the system. The output of the 5V voltage regulator module serves as a 5V voltage source, as shown in the attached manual. Figure 8 As shown, the input of the 2.8V voltage regulator module is a 5V voltage source, and the output of the 2.8V voltage regulator module is a 2.8V voltage source, as per the attached manual. Figure 9 As shown, the input of the 3.3V voltage regulator module is the power supply line, and the output of the 3.3V voltage regulator module serves as a 3.3V voltage source.

[0027] As per the instruction manual Figure 5 As shown, the video driver module includes a driver chip U3. The VIN pin of the driver chip U3 is connected to the DAC_OUT pin of the main control module, and the VOUT pin of the driver chip U3 is connected to an external video playback device via a video cable. The PS and VCC pins of the driver chip U3 are connected to a 5V voltage source. The video driver module is used to further analyze and process the video signal received by the main control module and output it to the user through a video device.

[0028] As per the instruction manual Figure 7 As shown, the image sensing module includes a chip U6, which is signal-connected to the main control module. The chip U6 is model SC231AI. The image sensing module is used to analyze video data by analyzing the video content.

[0029] As per the instructions Figure 10 As shown, the radar interface includes connector U5, the input of connector U5 is connected to an external radar, the output of connector U5 is connected to a millimeter-wave radar, the radar operates in the range of 24G-79G, the radar interface is powered by a 3.3V voltage source, and the output of connector U5 is connected to an external buzzer.

[0030] The storage module includes a chip U4. The CS# pin of the chip U4 is connected to the GPIO4 pin of the main control module, the SO / SIO1 pin of the chip U4 is connected to the GPIO7 pin of the main control module, the SCLK pin of the chip U4 is connected to the GPIO5 pin of the main control module, the SO / SIO0 pin of the chip U4 is connected to the GPIO6 pin of the main control module, and the VCC, WP#, and HOLD# pins of the chip U4 are connected to a 5V voltage source.

[0031] The main control module is also connected to an action triggering module, which includes multiple triggering circuits. The input of each triggering circuit is connected to a GPIO pin of the main control module. Each triggering circuit includes two resistors connected in series between the VDDIO pin of the main control module and the power ground. The series connection point of these two resistors serves as the input of the triggering circuit. For example, when a command to reverse, flip the screen, or mirror the screen is given, feedback is sent to the main control module through the input of the triggering circuit.

[0032] When the car is reversing, the entire "audio-visual fusion sensor" system begins to operate. The video panel outputs a video signal to the car's center console via AV. When the millimeter-wave radar detects an object 1.6m from the rear of the car, it outputs a signal to the video panel via TX, and distance information begins to appear on the screen. When the millimeter-wave radar detects an object 0.6m from the rear of the car, the screen begins to display centimeter-level distance information, and simultaneously, the radar panel sends a PWM signal to the buzzer via the output port. The buzzer then sounds an alarm. As the object gets closer to the rear of the car during reversing, the distance detected by the radar decreases from less than 60cm. The screen displays centimeter-level distance information, and the buzzer alarm frequency increases. When the distance is less than or equal to 20cm, a severe warning screen appears, displaying a "Danger" warning message. The key is the synergistic effect of the high-precision 24-79GHz band millimeter-wave radar's centimeter-level distance detection, the in-vehicle imaging module's screen display, and the audio warning, forming a complete audio-visual fusion system. This invention enables object recognition with centimeter-level accuracy, a recognition distance of up to 20 meters, and the ability to recognize up to 50 targets with an extremely low false recognition rate, perfectly solving the various drawbacks of previous solutions. Simultaneously, it improves circuit performance and reliability, reduces wiring difficulty and interference, lowers material and production costs, increases production efficiency, and reduces installation labor costs.

[0033] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An acoustic-optic fusion sensor suitable for 24G-79G intra-working frequency millimeter wave radar, characterized in that, The video line, the power line, the control panel and the camera, the video line connects the control panel and the camera, the power line is electrically connected with the control panel and the camera, the video line and the power line connect the camera and the control panel by the connector. 2.The acousto-optic fusion sensor for 24G-79G internal working frequency millimeter wave radar according to claim 1, wherein, The camera and the control panel are separately arranged.

3. A control board using an acousto-optic hybrid sensor, comprising a circuit board and an acousto-optic hybrid sensor system welded on the circuit board, the acousto-optic hybrid sensor system comprising a master control module and its matching circuit, characterized in that, The sound and light fusion sensing system includes a power conversion module, a storage module, a video driving module, an image sensing module and a radar interface, the power conversion module is externally connected with a power line as a power supply of the sound and light fusion sensing system, the storage module is signal connected with the main control module, the storage module applies a nonvolatile memory, the input signal of the video driving module is connected with the main control module, the output end of the video driving module is externally connected with a video output device, the input end of the video driving module is connected with the main control module, and the image sensing module is signal connected with the main control module.

4. The control panel using the acousto-optic fusion sensor according to claim 3, wherein The GPIO8 and GPIO9 pins of the main control module are externally connected with a camera device, the XO and XI pins of the main control module are connected with a crystal oscillator, and the RESETB of the main control module is connected with a radar interface.

5. The control panel using the acousto-optic fusion sensor according to claim 3, wherein The power conversion module includes a 1.8V voltage stabilizing module, a 5V voltage stabilizing module, a 2.8V voltage stabilizing module and a 3.3V voltage stabilizing module, The input of the 1.8V voltage stabilizing module is powered by the main control module, the output of the 1.8V voltage stabilizing module is a 1.8V voltage source, the input of the 5V voltage stabilizing module is a power line, the output of the 5V voltage stabilizing module is a 5V voltage source, the input of the 2.8V voltage stabilizing module is a 5V voltage source, the output of the 2.8V voltage stabilizing module is a 2.8V voltage source, the input of the 3.3V voltage stabilizing module is a power line, and the output of the 3.3V voltage stabilizing module is a 3.3V voltage source.

6. The control panel using the acousto-optic fusion sensor according to claim 3, wherein The video driving module includes a driving chip U3, the VIN pin of the driving chip U3 is connected with the DAC_OUT pin of the main control module, the VOUT pin of the driving chip U3 is externally connected with a video playing device through a video line, and the PS and VCC pins of the driving chip U3 are connected with a 5V voltage source.

7. The control panel of claim 3, wherein the control panel is a portable control panel. The image sensing module includes a chip U6, the chip U6 is signal connected with the main control module, and the model of the chip U6 is SC231AI.

8. The control panel of claim 3, wherein, The radar interface includes a connector U5, the input of the connector U5 is externally connected with a radar, the radar interface is powered by a 3.3V voltage source, and the output of the connector U5 is externally connected with a buzzer.

9. The control panel of claim 3, wherein, The storage module includes a chip U4, the CS# pin of the chip U4 is connected with the GPIO4 pin of the main control module, the SO / SIO1 pin of the chip U4 is connected with the GPIO7 pin of the main control module, the SCLK pin of the chip U4 is connected with the GPIO5 pin of the main control module, the SO / SIO0 pin of the chip U4 is connected with the GPIO6 pin of the main control module, and the VCC, WP# and HOLD# pins of the chip U4 are connected with a 5V voltage source.

10. The control panel using the acousto-optic fusion sensor according to claim 3, wherein The master module is further connected with an action trigger module, the action trigger module comprises a plurality of trigger circuits, an input of each trigger circuit is connected with a GPIO pin of the master module, and the trigger circuit comprises two resistors connected in series between a VDDIO pin and a power supply ground of the master module, and a series point of the two resistors serves as an input of the trigger circuit.

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