Automobile driving monitoring system

Abstract

The utility model relates to the field of automobile control design, in particular to an automobile driving monitoring system. According to the automobile driving monitoring system, switching between panoramic display and blind area display of the automobile is achieved, a better visual field can be provided in different driving environments, and blind spots can be avoided. If the vehicle is in a starting or low-speed state, the monitoring controller is connected with the panoramic image device through the first picture end, so that panoramic video signals collected by the panoramic image device are obtained, panoramic images around the vehicle are displayed through the connected display screen, a more comprehensive and clearer visual field is provided for a driver, and a close-range blind area of the vehicle body is avoided; if the vehicle is in a high-speed state, the monitoring controller obtains blind area data, provides timely warning and displays real-time images through the connected controller, makes up for insufficient vision of a driver, and is connected with the blind area monitoring device through the second picture end, so that blind area video signals collected by the blind area monitoring device are obtained, and the blind area video signals are displayed in real time. And a blind area image around the vehicle is displayed through the connected display screen. According to the structure, small integration is achieved in the connection relation, the area of a PCB is saved, the cost is reduced, the observation requirements of a driver for different views in different states of the vehicle are met, the safety and driving experience of the driver can be improved, accidents are reduced, and the cost can be reduced.

Description

Technical Field

[0001] The utility model relates to the field of automobile control design, and particularly relates to an automobile driving monitoring system. Background Art

[0002] In recent years, with the continuous growth of China's economy and the improvement of people's living standards, the automobile industry has also developed rapidly. However, in the modern traffic environment, drivers often face various challenges, such as blind spots and limited vision, which may pose potential risks to driving safety.

[0003] To solve this problem, some advanced technologies have been introduced into automobiles. For example, the blind spot monitoring system provides monitoring and warning functions for the blind spots around the vehicle through real-time data and algorithm analysis, helping drivers drive more safely.

[0004] However, with the increase in vehicle users and the increasing complexity of road conditions, the driving states faced by drivers are becoming increasingly complex. Existing technologies such as adding display screens not only increase costs but also occupy the in-vehicle space resources. Summary of the Utility Model

[0005] The utility model provides an automobile driving monitoring system, which can solve the problems existing in the related technologies. The technical solutions are as follows:

[0006] An automobile driving monitoring system is provided, and the system includes a panoramic imaging device 1, a blind spot monitoring device 2, a control circuit 3, a display screen 4, and a monitoring controller 5;

[0007] The monitoring controller 5 includes a control end 51, an output end 52, a first picture end (53), and a second picture end 54;

[0008] The output end of the panoramic imaging device 1 is connected to the first picture end (53) of the monitoring controller 5, the output end of the blind spot monitoring device 2 is connected to the second picture end 54 of the monitoring controller 5, the output end of the control circuit 3 is connected to the control end 51 of the monitoring controller 5, and the display screen 4 is connected to the output end 52 of the monitoring controller 5;

[0009] The control circuit 3 is used to receive and process the automobile driving information and process the switching between the vehicle panoramic display and the blind spot display.

[0010] Optionally, the control circuit 3 includes a signal input terminal Ctrl, a first resistor R1, a second resistor R2, a triode Q1, a CAN bus, and a third resistor R3. The CAN bus is used to send CAN messages, and the CAN messages include the automobile driving information;

[0011] The control terminal of the triode Q1 is connected to the first end of the first resistor R1, and the second end of the first resistor R1 is connected to the signal input terminal Ctrl;

[0012] The control terminal of the triode Q1 is also connected to the first end of the second resistor R2, and the second end of the second resistor R2 is grounded;

[0013] The input terminal of the triode Q1 is connected to the first end of the third resistor R3 and the control terminal 51 of the monitoring controller 5, and the second end of the third resistor R3 is connected to the power supply VCC;

[0014] The output terminal of the triode Q1 is grounded;

[0015] The control circuit 3 receives the vehicle driving information in the CAN message, and the vehicle driving information includes a gear signal, a vehicle speed signal, a turn signal, and a front wheel steering signal.

[0016] Optionally, the control circuit 3 completes the switching between the vehicle panoramic display and the blind area display according to the control signals in different scenarios, wherein the control signals are sent from the signal input terminal Ctrl of the control circuit 3.

[0017] Optionally, the monitoring controller 5 is provided with a first switch terminal, a second switch terminal, and a signal output terminal;

[0018] The first switch terminal is connected to the first picture terminal (53), the second switch terminal is connected to the second picture terminal 54, one end of the signal output terminal is used as a selection terminal and is connected to the first switch terminal or the second switch terminal, and the other end of the signal output terminal is used as an output terminal and is connected to the output terminal 52.

[0019] Optionally, the triode Q1 is an NPN type triode;

[0020] The collector C of the triode Q1 is used as the input terminal of the triode Q1, the emitter E of the triode Q1 is used as the output terminal of the triode Q1, and the base B of the triode Q1 is used as the control terminal of the triode Q1.

[0021] Optionally, the monitoring controller 5 further includes a power input terminal 55 and a ground terminal 56;

[0022] The power input terminal 55 is connected to the VCC power supply, and the ground terminal 56 is grounded.

[0023] Optionally, the system further includes a filtering circuit, and the filtering circuit is composed of a first capacitor C1 and a second capacitor C2;

[0024] The first end of the first capacitor C1 is connected to the power input terminal 55, and the second end of the first capacitor C1 is grounded; the first end of the second capacitor C2 is connected to the power input terminal 55, and the second end of the second capacitor C2 is grounded.

[0025] Optionally, the system further includes a protection circuit, which is composed of a first voltage stabilizing diode D1 and a second voltage stabilizing diode D2;

[0026] One end of the first voltage stabilizing diode D1 is connected to the first screen terminal (53) of the monitoring controller 5, and the other end of the first voltage stabilizing diode D1 is grounded;

[0027] One end of the second voltage stabilizing diode D2 is connected to the second screen terminal 54 of the monitoring controller 5, and the other end of the second voltage stabilizing diode D2 is grounded.

[0028] Optionally, the first voltage stabilizing diode D1 and the second voltage stabilizing diode D2 are bidirectional transient voltage suppression diodes.

[0029] The technical effects brought by this application are at least as follows.

[0030] In summary, the vehicle driving monitoring system designed by the present utility model realizes the switching between the panoramic display and the blind area display of the vehicle, and can provide better vision and avoid blind spots in different driving environments. For example, when the vehicle is in the starting or low-speed state, the monitoring controller is connected to the panoramic imaging device through the first screen terminal, so as to obtain the panoramic video signal collected by the panoramic imaging device, and display the panoramic image around the vehicle through the connected display screen, providing a more comprehensive and clear vision for the driver and avoiding the close-range blind area of the vehicle body; another example is when the vehicle is in the high-speed state, the monitoring controller obtains the blind area data through the connected controller, provides timely warnings and displays real-time images, making up for the deficiency of the driver's vision, and is connected to the blind area monitoring device through the second screen terminal, so as to obtain the blind area video signal collected by the blind area monitoring device, and display the blind area image around the vehicle through the connected display screen. This structure realizes a smaller integration in the connection relationship, not only saves the PCB area but also reduces the cost, meets the driver's observation requirements for different visions in different states of the vehicle, can not only improve the driver's safety and driving experience, reduce the occurrence of accidents, but also reduce costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 Shows the system structure schematic diagram of the vehicle driving monitoring system shown in an exemplary embodiment of this application;

[0032] Figure 2 Shows the system structure schematic diagram of the vehicle driving monitoring system shown in another exemplary embodiment of this application;

[0033] Figure 3 Schematic structural diagram of the panoramic image device shown

[0034] Figure 4 Schematic structural diagram of the blind spot monitoring device shown Specific implementation manners

[0035] To make the objectives, technical solutions and advantages of the present application clearer, the following will further describe in detail the embodiments of the present application with reference to the accompanying drawings.

[0036] As used herein, "a plurality of" means two or more. "And / or" describes the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B may represent: A exists alone, A and B exist simultaneously, and B exists alone. The character " / " generally represents an "or" relationship between the associated objects before and after.

[0037] As Figure 1 shown Figure 1 The figure shows a schematic structural diagram of an automotive driving monitoring system shown in an exemplary embodiment of the present application.

[0038] In this automotive driving monitoring system, it includes a panoramic image device 1, a blind spot monitoring device 2, a control circuit 3, a display screen 4 and a monitoring controller 5, and their connection relationships are as follows.

[0039] The monitoring controller 5 includes a control terminal 51, an output terminal 52, a first picture terminal 53 and a second picture terminal 54. The output terminal of the panoramic image device 1 is connected to the first picture terminal 53 of the monitoring controller 5, the output terminal of the blind spot monitoring device 2 is connected to the second picture terminal 54 of the monitoring controller 5, the output terminal of the control circuit 3 is connected to the control terminal 51 of the monitoring controller 5, and the display screen 4 is connected to the output terminal 52 of the monitoring controller 5.

[0040] As Figure 1 shown, the panoramic image device 1 is responsible for collecting and generating a panoramic video signal, and the blind spot monitoring device 2 is responsible for collecting and generating a blind spot video signal.

[0041] In the monitoring controller 5, there is an analog switch for switching the contact pins of the panoramic image device 1 and the blind spot monitoring device 2 under the internal structure. As Figure 1 shown, Vin1 represents the contact pin of the panoramic image device 1, and Vin2 represents the contact pin of the blind spot monitoring device 2. In addition, there is an output pin Vout connected to the display screen 4 for outputting the panoramic video signal, and / or, the blind spot video signal.

[0042] During the connection between the monitoring controller 5 and the control circuit 3, the control circuit 3 is used to transmit CAN signals to provide a basis for the monitoring controller 5 to make switching judgments.

[0043] In the embodiment of the present application, the panoramic imaging device 10 uses four ultra-wide-angle fish-eye lenses to collect images. After data processing, the captured images are corrected for distortion and stitched to form a surrounding image. When the analog fast switch contacts the Vin1 pin, it is connected to the monitoring controller 5. The monitoring controller 5 obtains the panoramic video signal and can view the real-time image information (bird's-eye view image) of the 360-degree panoramic fusion around the vehicle, with an ultra-wide viewing angle and seamless stitching, through the display screen 4.

[0044] In the embodiment of the present application, the blind spot monitoring device 20 obtains real-time data around the vehicle through the set sensors, such as vehicle speed, turning speed, etc. Finally, through algorithm processing and analysis, the monitoring and warning of the blind spot are realized.

[0045] In addition, in the embodiment of the present application, the structure of the panoramic imaging device 1 is as Figure 3 shown, and the structure of the blind spot monitoring device 2 is as Figure 4 shown.

[0046] The design idea of the present utility model is that when the vehicle is in different states, the blind spot visual field ranges that need to be concerned are different. Then, when the vehicle is starting or driving at a low speed, a panoramic imaging device is provided to provide the driver with the blind spot visual field range close to the vehicle body, and the display screen displays the panoramic picture; while in states such as high speed or lane change, a blind spot monitoring device is provided to provide the visual field range monitored by the blind spot monitoring device, that is, the display screen displays the blind spot picture, and the monitoring and warning of the blind spot are realized.

[0047] Based on the above design idea, in order to facilitate viewing the road conditions of the vehicle in different states and avoid visual blind spots, without using multiple display screens or split screens to display the blind spot ranges in different states, the automotive driving monitoring system designed by the present utility model realizes the switching between the panorama and the blind spot. This structure does not require increasing the cost of multiple screens and relying on multi-screen display technology, and reduces the occupation of in-vehicle space resources. Specifically, the panoramic imaging device is used to output a panoramic image signal, the blind spot monitoring device is used to output a blind spot image signal, the display screen is located in the automotive cab and is used to display images, the speed acquisition unit is used to acquire the speed information of the vehicle, and the control unit is used for the switching of the display mode. Among them, the blind spot monitoring device is also used to output a warning signal because it is extremely easy to have situations where the vehicle body is close or dangerous in the blind spot and needs to be processed in a timely manner.

[0048] So far, the above structural description of the automotive driving monitoring system provided by the present utility model has been made. The communication principle for implementation is described as follows. As Figure 1As shown, the video outputs of the panoramic imaging device 10 and the blind spot monitoring device 20 are respectively connected to the normally open Vin1 and normally closed Vin2 switch ports of the analog switch in the monitoring controller 5. The control circuit 3 is connected to the signal input terminal Ctrl of the monitoring controller 5, and the display screen 4 is connected to the signal output terminal Vout of the monitoring controller 5.

[0049] First, the monitoring controller 5 obtains the gear signal, vehicle speed signal, turn signal, and front wheel steering signal of the vehicle from the control circuit 3 and processes and analyzes these data. Secondly, when it is detected that the vehicle is in the starting or low-speed state, the panoramic imaging device 10 works. The monitoring controller 5 controls the analog switch to use the normally open input terminal Vin1 and outputs the panoramic video signal to the display screen 4, and the display screen 4 displays the panoramic image. When it is detected that the following two conditions are both satisfied, the monitoring controller 5 controls the analog switch to use the normally closed input terminal Vin2 and outputs the blind spot video signal to the display screen 4, and the display screen 4 displays the image. The first condition is that the vehicle speed is greater than 15 Km / h (this vehicle speed is defined by the vehicle manufacturer). The second condition is that the turning radius is greater than 100 m or the turn signal is detected.

[0050] In summary, the automotive driving monitoring system designed by the present utility model realizes the switching between the panoramic display and the blind spot display of the vehicle, and can provide better vision and avoid blind spots in different driving environments. For example, when the vehicle is in the starting or low-speed state, the monitoring controller is connected to the panoramic imaging device through the first picture end, so as to obtain the panoramic video signal collected by the panoramic imaging device, and display the panoramic image around the vehicle through the connected display screen, providing a more comprehensive and clear vision for the driver and avoiding the close-range blind spot of the vehicle body; for another example, when the vehicle is in the high-speed state, the monitoring controller obtains the blind spot data through the connected controller, provides timely warnings and displays real-time images, making up for the deficiency of the driver's vision, and is connected to the blind spot monitoring device through the second picture end, so as to obtain the blind spot video signal collected by the blind spot monitoring device, and display the blind spot image around the vehicle through the connected display screen. This structure realizes a smaller integration in the connection relationship, not only saving the PCB area but also reducing the cost, meeting the driver's observation requirements for different visions in different states of the vehicle, not only improving the driver's safety and driving experience, reducing the occurrence of accidents, but also reducing costs.

[0051] Embodiment 2

[0052] Further, as Figure 2 shown, Figure 2 shows the system structure schematic diagram of the automotive driving monitoring system shown in another exemplary embodiment of the present application.

[0053] The control circuit 3 includes a signal input terminal Ctrl, a first resistor R1, a second resistor R2, a triode Q1, a CAN bus, and a third resistor R3. The CAN bus is used to send CAN messages, and the CAN messages include vehicle driving information. The control terminal of the triode Q1 is connected to the first end of the first resistor R1, and the second end of the first resistor R1 is connected to the signal input terminal Ctrl; the control terminal of the triode Q1 is also connected to the first end of the second resistor R2, and the second end of the second resistor R2 is grounded; the input terminal of the triode Q1 is connected to the first end of the third resistor R3 and the control terminal 51 of the monitoring controller 5, and the second end of the third resistor R3 is connected to the power supply VCC; the output terminal of the triode Q1 is grounded; the control circuit 3 receives the vehicle driving information in the CAN message, and the vehicle driving information includes a gear signal, a vehicle speed signal, a turn signal, and a front wheel steering signal.

[0054] In a possible implementation manner, the control circuit 3 completes the switching between the panoramic display and the blind area display of the vehicle according to the control signals in different scenarios, wherein the control signals are sent from the signal input terminal Ctrl of the control circuit 3.

[0055] Further, the monitoring controller 5 is provided with a first switch terminal NO, a second switch terminal NC, and a signal output terminal 52. Among them, the first switch terminal NO is provided with the above-mentioned Vin1 contact pin, and the second switch terminal NC is provided with the above-mentioned Vin2 contact pin.

[0056] The first switch terminal NO is connected to the first picture terminal 53, the second switch terminal NC is connected to the second picture terminal 54, one end of the signal output terminal 52 is used as a selection terminal and is connected to the first switch terminal NO or the second switch terminal NC, and the other end of the signal output terminal 52 is used as an output terminal and is connected to the output terminal display screen.

[0057] Further, the triode Q1 is an NPN-type triode. The collector C of the triode Q1 is used as the input terminal of the triode Q1, the emitter E of the triode Q1 is used as the output terminal of the triode Q1, and the base B of the triode Q1 is used as the control terminal of the triode Q1.

[0058] Further, the monitoring controller 5 further includes a power input terminal 55 and a grounding terminal 56. The power input terminal 55 is connected to the VCC power supply, and the grounding terminal 56 is grounded.

[0059] Further, the system further includes a filtering circuit, which is composed of a first capacitor C1 and a second capacitor C2. The first end of the first capacitor C1 is connected to the power input terminal 55, and the second end of the first capacitor C1 is grounded; the first end of the second capacitor C2 is connected to the power input terminal 55, and the second end of the second capacitor C2 is grounded. The first capacitor C1 and the second capacitor C2 are used for filtering to stabilize the voltage.

[0060] Further, the system further includes a protection circuit, which is composed of a first voltage stabilizing diode D1 and a second voltage stabilizing diode D2. One end of the first voltage stabilizing diode D1 is connected to the first screen terminal (53) of the monitoring controller 5, and the other end of the first voltage stabilizing diode D1 is grounded. One end of the second voltage stabilizing diode D2 is connected to the second screen terminal 54 of the monitoring controller 5, and the other end of the second voltage stabilizing diode D2 is grounded.

[0061] The first voltage stabilizing diode D1 and the second voltage stabilizing diode D2 are bidirectional transient voltage suppression diodes. The first voltage stabilizing diode D1 and the second voltage stabilizing diode D2 are used to protect the circuit. Once there are surges, pulses, or static electricity in the circuit, they protect the circuit.

[0062] So far, the above structural description has been made for an automotive driving monitoring system provided by the present utility model. The communication principle achieved will be further described as follows. The monitoring controller obtains the gear signal, vehicle speed signal, turn signal, and front wheel steering signal from the CAN bus. When the vehicle is in the starting or low-speed driving state, generally when the speed is lower than 15 Km / h (the speed range of different vehicles is different), the panoramic imaging device works. The monitoring controller will switch to the panoramic imaging device, and the display screen will display the panoramic image; when the vehicle is in the high-speed driving state, generally when the speed is greater than 15 Km / h and the monitoring controller detects the turn signal or the turning radius is greater than 100 m, the blind spot monitoring device works. The monitoring controller will switch it to the blind spot monitoring device, and the display screen will display the blind spot image.

[0063] When there is no signal input at the signal input terminal CTRl, the triode Q1 is not turned on. At this time, the input NO of the monitoring controller 5 is connected to the output COM pin, which corresponds to the panoramic video signal and is output to the display screen 4 through the COM pin of the monitoring controller 5. That is, when there is no control signal input, the analog switch chip under the monitoring controller 5 selects the video signal of the panoramic imaging device 10, and the display screen 4 displays the panoramic image.

[0064] When there is an input signal at the signal input terminal CTRl, the triode Q1 is turned on. The input NC of the monitoring controller 5 is connected to the output COM pin, which corresponds to the blind spot video signal and is output to the display screen 4 through the COM pin of the monitoring controller 5. That is, after the input control signal, the analog switch chip under the monitoring controller 5 selects the video signal of the blind spot monitoring device 20, and the display screen 4 displays the blind spot image.

[0065] In summary, the system has the following advantages.

[0066] 1. Improve the driver's visual experience: The switching between the panoramic display mode and the blind spot display mode can provide a suitable field of view according to different driving environments, improving the driver's visual experience.

[0067] 2. Improve driving safety: The panoramic display mode can avoid blind spots, and the blind spot display mode can highlight blind spots, which can help drivers better observe and judge the surrounding environment, improve driving safety, effectively reduce the occurrence of traffic accidents, enhance the safety and driving experience of drivers, and lay a solid foundation for future intelligent transportation systems.

[0068] 3. Enhance driving comfort: The system can switch modes according to the driver's needs, providing a more suitable display effect and enhancing driving comfort.

[0069] 4. Reduce costs and save in-vehicle space resources: By switching a single display screen (4), costs are reduced and the occupancy rate of in-vehicle space is decreased.

[0070] The above embodiments of the present utility model are only for description and do not represent the advantages or disadvantages of the embodiments. The above are only optional embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present application shall be included within the protection scope of the present application.

Claims

1. A vehicle driving monitoring system, characterized in that: The system comprises a panoramic imaging device (1), a blind spot monitoring device (2), a control circuit (3), a display screen (4) and a monitoring controller (5); The monitoring controller (5) comprises a control terminal (51), an output terminal (52), a first picture terminal (53) and a second picture terminal (54); The output end of the panoramic imaging device (1) is connected to the first screen end (53) of the monitoring controller (5), the output end of the blind spot monitoring device (2) is connected to the second screen end (54) of the monitoring controller (5), the output end of the control circuit (3) is connected to the control end (51) of the monitoring controller (5), and the display screen (4) is connected to the output end (52) of the monitoring controller (5); The control circuit (3) is used to receive and process vehicle driving information and process the switching between vehicle panoramic display and blind spot display.

2. The vehicle driving monitoring system according to claim 1, characterized in that: The control circuit (3) comprises a signal input terminal (Ctrl), a first resistor (R1), a second resistor (R2), a transistor (Q1), a CAN bus and a third resistor (R3), wherein the CAN bus is used to send a CAN message, wherein the CAN message comprises vehicle driving information; The control end of the transistor (Q1) is connected to the first end of the first resistor (R1), and the second end of the first resistor (R1) is connected to the signal input end (Ctrl); The control end of the transistor (Q1) is also connected to the first end of the second resistor (R2), and the second end of the second resistor (R2) is grounded; The input end of the transistor (Q1) is connected to the first end of the third resistor (R3) and the control end (51) of the monitoring controller (5), and the second end of the third resistor (R3) is connected to a power supply (VCC); The output end of the transistor (Q1) is grounded; The control circuit (3) receives the vehicle driving information in the CAN message, wherein the vehicle driving information includes a gear position signal, a vehicle speed signal, a turn signal, and a front wheel steering signal.

3. The vehicle driving monitoring system according to claim 2, characterized in that: The control circuit (3) switches between the vehicle panoramic display and the blind spot display according to control signals in different scenes, wherein the control signal is sent from a signal input terminal (Ctrl) of the control circuit (3).

4. The vehicle driving monitoring system according to claim 1, characterized in that: The monitoring controller (5) is provided with a first switch terminal, a second switch terminal and a signal output terminal; The first switch end is connected to the first picture end (53), the second switch end is connected to the second picture end (54), one end of the signal output end is connected to the first switch end or the second switch end as a selection end, and the other end of the signal output end is connected to the output end (52) as an output end.

5. The vehicle driving monitoring system according to claim 2, characterized in that: The transistor (Q1) is an NPN transistor; The collector (C) of the transistor (Q1) serves as the input end of the transistor (Q1), the emitter (E) of the transistor (Q1) serves as the output end of the transistor (Q1), and the base (B) of the transistor (Q1) serves as the control end of the transistor (Q1).

6. The vehicle driving monitoring system according to any one of claims 1 to 4, characterized in that: The monitoring controller (5) further comprises a power input terminal (55) and a ground terminal (56); The power input terminal (55) is connected to a VCC power supply, and the ground terminal (56) is grounded.

7. The vehicle driving monitoring system according to claim 6, characterized in that: The system further comprises a filter circuit, wherein the filter circuit is composed of a first capacitor (C1) and a second capacitor (C2); A first end of the first capacitor (C1) is connected to the power input terminal (55), and a second end of the first capacitor (C1) is grounded; a first end of the second capacitor (C2) is connected to the power input terminal (55), and a second end of the second capacitor (C2) is grounded.

8. The vehicle driving monitoring system according to any one of claims 1 to 4, characterized in that: The system further comprises a protection circuit, wherein the protection circuit is composed of a first voltage stabilizing diode (D1) and a second voltage stabilizing diode (D2); One end of the first voltage-stabilizing diode (D1) is connected to the first screen terminal (53) of the monitoring controller (5), and the other end of the first voltage-stabilizing diode (D1) is grounded; One end of the second voltage-stabilizing diode (D2) is connected to the second screen terminal (54) of the monitoring controller (5), and the other end of the second voltage-stabilizing diode (D2) is grounded.

9. The vehicle driving monitoring system according to claim 8, characterized in that: The first voltage stabilizing diode (D1) and the second voltage stabilizing diode (D2) are bidirectional transient voltage suppression diodes.

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