TWI715062B - Instant traffic condition warning device and method - Google Patents

Abstract

An instant traffic condition warning method comprises the following steps. A controller receives a vehicle distance and a vehicle velocity, and the controller determines whether the vehicle distance is less than a distance threshold. When the vehicle distance is less than the distance threshold, the controller determines whether the vehicle velocity is larger than a velocity threshold. When the vehicle velocity is larger than the velocity threshold, a warning element generates a warning signal.

Description

Real-time road condition warning device and method

The invention relates to a warning method, especially a warning method applied to real-time traffic conditions.

Today, the V2X NB-IOT communication protocol has been widely used in the Internet of Vehicles. In general, the V2X NB-IOT communication protocol includes vehicle to pedestrian (V2P), vehicle to traffic signs or traffic information (vehicle to infrastructure, V2I), and vehicle to LTE base station data network Road communication (vehicle to network, V2N), etc. In addition, there are already many cars equipped with V2X NB-IOT communication components, and exchange messages with other road devices using the V2X NB-IOT communication protocol, and immediately send out warning messages when it is judged that a potential traffic accident may occur to improve driving. Safety.

However, most of the devices currently equipped with V2X NB-IOT communication components can only determine whether the vehicle equipped with the device has a potential traffic accident, and cannot further determine whether there are other potential risks in other nearby road conditions, so it is still unable to effectively prevent most traffic accident.

In order to improve the above problems, the present invention provides a real-time road condition warning device and method.

A real-time traffic warning method includes the following steps. The controller receives the vehicle distance and the vehicle speed, and determines whether the vehicle distance is less than the distance threshold. When the vehicle distance is less than the distance threshold, the controller determines whether the vehicle speed is greater than the speed threshold. When the vehicle speed is greater than the speed threshold, the warning element generates a warning signal.

A real-time road condition warning device includes: a sensor, a warning component, a communication component and a controller, wherein the controller is electrically connected to the warning component, the communication component and the sensor. The sensor is used to obtain the vehicle distance and vehicle speed associated with the vehicle. The warning component generates a warning signal when triggered. The communication component is used to receive and transmit warning signals. The controller is electrically connected to the warning element, the communication component and the sensor. The controller is used to connect the distance of the vehicle and the speed of the vehicle, and judge whether the distance of the vehicle is less than the distance threshold, and the controller judges the vehicle when the vehicle distance is less than the distance threshold. Whether the speed is greater than the speed threshold, and when it is determined that the vehicle speed is greater than the speed threshold, the warning element is triggered to generate a warning signal.

With the above structure, the real-time road condition warning device and method disclosed in the present invention can detect potential traffic accidents and issue warnings in real time based on the blind spots when vehicles, locomotives and pedestrians are moving. In addition, the described device and method can issue different warnings based on different distances from another vehicle and the moving speed of another vehicle, so that drivers and pedestrians can more intuitively know the types of potential traffic accidents, and Respond instantly.

The above description of the content of the disclosure and the description of the following embodiments are used to demonstrate and explain the spirit and principle of the present invention, and to provide a further explanation of the patent application scope of the present invention.

1: Real-time traffic warning device

11: Sensor

12: Warning components

13: Communication components

14: Controller

A: Another vehicle, vehicle

B: Vehicle

P: Road device

R: area range

DP: moving direction

DA: moving direction

O: meeting point

θ: included angle

FIG. 1 is a block diagram of a real-time traffic warning device according to an embodiment of the invention.

FIG. 2 is a flowchart of a method for real-time traffic warning according to an embodiment of the present invention.

3A is a flowchart of a method for real-time traffic warning according to another embodiment of the present invention.

Fig. 3B is a context diagram of the warning method shown in Fig. 3A.

4A is a flowchart of a method for real-time traffic warning according to another embodiment of the present invention.

Fig. 4B is a context diagram of the warning method shown in Fig. 4A.

FIG. 5A is a flowchart of a method for real-time traffic warning according to another embodiment of the present invention.

Fig. 5B is a context diagram of the warning method shown in Fig. 5A.

FIG. 6 is a flowchart of a method for real-time traffic warning according to another embodiment of the present invention.

The detailed features and advantages of the present invention are described in detail in the following embodiments, and the content is sufficient to enable anyone familiar with the relevant art to understand the technical content of the present invention and implement it accordingly, and according to the content disclosed in this specification, the scope of patent application and the drawings Anyone who is familiar with the relevant art can easily understand the related purpose and advantages of the present invention. The following examples further illustrate the viewpoints of the present invention in detail, but do not limit the scope of the present invention by any viewpoint.

Please refer to Figure 1. FIG. 1 is a block diagram of a real-time traffic warning device according to an embodiment of the invention. The real-time road condition warning device 1 includes a sensor 11, a warning component 12, a communication component 13 and a controller 14. The controller 14 is electrically connected to the warning component 12, the communication component 13 and the sensor 11.

The sensor 11 is used to obtain the vehicle distance and vehicle speed associated with the vehicle. In detail, the vehicle distance can be the relative distance between the vehicle and the sensor 11, and the vehicle speed can be the absolute speed of the vehicle relative to the ground; the absolute speed of the vehicle relative to the ground is determined by the vehicle relative to the sensor 11 The relative speed of is calculated from the moving speed of the sensor 11. For example, the sensor 11 can be configured as an ultrasonic radar, an optical radar, an infrared sensor (IR sensor), etc., and the invention is not limited thereto.

The warning element 12 is used to generate a warning signal when triggered. In detail, when the real-time road condition warning device 1 judges that a potential traffic accident may occur, the warning element 12 will be triggered and generate a warning signal to remind the vehicle, engine or pedestrian equipped with the real-time road condition warning device 1 to pay attention to the road conditions . For example, the warning element 12 is configured as a microphone, a light, or a screen, and the warning signal can be presented in the form of sound, light or image, but the invention is not limited thereto.

The communication component 13 is used for receiving or transmitting warning signals. In detail, the communication component 13 can transmit the warning signal to vehicles, locomotives, pedestrians, etc. that may have traffic accidents through different communication protocols. For example, the communication component 13 can be configured as a V2X communication component so that the vehicle can receive the warning signal through the V2X communication protocol. On the other hand, the communication component 13 can also be configured as a bluetooth, and the drivers and pedestrians of the idle car can receive warning signals through mobile devices or smart wearable devices.

The controller 14 is used to connect the vehicle distance and the vehicle speed, and determine whether the vehicle distance is less than the distance threshold; the controller 14 judges whether the vehicle speed is greater than the speed threshold when the vehicle distance is less than the distance threshold, and judges whether the vehicle speed is greater than the speed threshold When the time, the warning element 12 is triggered to generate a warning signal. For example, the controller 14 may be implemented by a microcontroller (microcontroller unit, MCU), a microprocessor (micro processing unit, MPU), etc., and the present invention is not limited thereto. For the detailed operation of the controller 14, please refer to the continued paragraph.

Please refer to Figure 2. 2 is a flow chart of an instant road condition warning method according to an embodiment of the present invention. Please refer to step S0: the controller 14 receives the vehicle distance and the vehicle speed. According to different usage scenarios, the controller 14 receives the vehicle distance and vehicle speed from the sensor 11 or the communication component 13. In detail, when the controller 14 is set on a wearable device, the vehicle distance and vehicle speed can be obtained by the sensor 11 and transmitted to the controller 14 (ie, step S4); on the other hand, when the controller 14 is set on When a vehicle is on board, the vehicle distance and vehicle speed can be obtained by the communication component 13 of the vehicle from the sensor 11 of other vehicles or road users P. It should be noted that both of the above two scenarios can be continued to step S0. FIG. 2 shows that step S4 is an example of this embodiment, and is not used to limit the preconditions for performing steps S0 to S3. Please refer to step S1: the controller judges whether the vehicle distance is less than a distance threshold, and the threshold may be a manually set value.

When it is judged that the vehicle distance is not less than the distance threshold, then return to step S0. When the vehicle distance is less than the distance threshold, please refer to step S2: the controller 14 determines whether the vehicle speed is greater than the speed threshold, where the speed threshold can be set to a fixed value or changed according to different distance thresholds. For example, a larger distance threshold may correspond to a smaller speed threshold, so that the controller 14 can more accurately determine the probability of a traffic accident. When the vehicle speed is greater than the speed threshold, please refer to step S3: the warning element 12 generates a warning signal, where the warning signal can also be transmitted to the vehicle generating the vehicle distance and vehicle speed to remind or directly trigger the vehicle to decelerate. On the other hand, when the vehicle speed is not greater than the speed threshold, return to step S0.

Please refer to Figures 3A and 3B. 3A is a flowchart of a method for real-time traffic warning according to another embodiment of the present invention. Fig. 3B is a context diagram of the warning method shown in Fig. 3A. FIG. 3B shows a road-use device P (shown as a locomotive) and a vehicle A carrying the real-time road condition warning device 1, in which the road-use device P cannot directly detect that it is driving in the moving direction DA when driving in the moving direction DP. Vehicle A. Please refer to step S4 of FIG. 2 first: the sensor 11 obtains the vehicle distance and vehicle speed associated with the vehicle A, and the detailed implementation method of step S4 is shown in FIG. 3A. Please refer to step S41: the sensor 11 determines the moving direction DP of the road device P, where the sensor 11 is set on the real-time road condition warning device 1 worn by the road device P.

Please refer to step S42: the sensor 11 determines whether there is a vehicle A in a direction substantially parallel to the moving direction DP. In detail, substantially parallel includes a direction parallel to the movement direction DP, for example, the movement direction DA of the vehicle A. On the other hand, substantially parallel can also be a direction where the included angle with the moving direction DP does not exceed the threshold; the threshold can be set manually, for example, 5 to 10 degrees. When the sensor 11 determines that there is a vehicle A in a direction substantially parallel to the moving direction DP, please refer to step S42: the sensor 11 obtains the vehicle distance and vehicle speed associated with the vehicle A, where the vehicle distance and vehicle speed are provided for immediate The road condition warning device 1 judges whether the road device P and the vehicle A have a potential traffic accident risk. When the real-time road condition warning device 1 determines that there is a potential traffic accident risk, the real-time road condition warning device 1 can send a warning signal to the vehicle A to warn the vehicle A or directly trigger the vehicle A to automatically decelerate.

Please refer to Figures 4A and 4B. 4A is a flowchart of a method for real-time traffic warning according to another embodiment of the present invention. Fig. 4B is a context diagram of the warning method shown in Fig. 4A. Fig. 4B shows a road-use device P (shown as a pedestrian) and a vehicle A carrying the real-time road condition warning device 1. When the road-use device P is walking in the moving direction DP, it cannot directly detect both sides because it is using a mobile phone. Vehicle A traveling in the moving direction DA. Therefore, the road device P and the vehicle A may collide at the intersection O.

Step S44 is the same as step S41 in FIG. 3A, so the description will not be repeated here. Please refer to step S45: the sensor 11 determines whether there is a vehicle A on the two sides substantially perpendicular to the moving direction DP. In detail, the substantially vertical may include a direction perpendicular to the moving direction DP, and the sensor 11 may preferentially detect whether there is a vehicle A in the direction perpendicular to the moving direction DP. On the other hand, substantially perpendicular may also include a direction perpendicular to the movement direction DP and within a predetermined angle range. For example, the sensor 11 can detect whether there is a vehicle A in a direction perpendicular to the moving direction DP and the included angle θ is within 70 degrees to 110 degrees; wherein the preset angle range can be preset in the real-time road condition warning device 1 Inside. When the sensor 11 determines that there is a vehicle A on two sides substantially perpendicular to the moving direction DP, please refer to step S46: the sensor 11 obtains the vehicle distance and the vehicle speed associated with the vehicle A. Since the detailed description of step S46 is the same as that of step S43 in FIG. 3A, the description will not be repeated here.

It is worth mentioning that when the communication component 13 of the real-time traffic warning device 1 is configured as a V2X communication component, the real-time traffic warning device 1 can further judge the traffic signal through the V2I communication protocol, and can further determine the traffic signal when the traffic signal is detected. Start when the light turns green The sensor 11 operates. In addition, the real-time road condition warning device 1 can also send a warning message in real time when a pedestrian runs a red light without noticing the change of traffic signs.

Please refer to Figures 5A and 5B. FIG. 5A is a flowchart of a method for real-time traffic warning according to another embodiment of the present invention. Fig. 5B is a context diagram of the warning method shown in Fig. 5A. Fig. 5B shows a vehicle B with an instant road condition warning device 1 and another vehicle A, in which the road device P (shown as a pedestrian) is not directly aware that it is on the diagonally rear side of the vehicle B to move when walking in the moving direction DP Another vehicle A traveling in the direction DA. Therefore, the road use device P may collide with another vehicle A at the intersection O.

Please refer to step S5: The sensor 11 determines whether the road-use device P is detected in the area R; the sensor 11 is set on the vehicle B here, and the area R can be a manually set value . For example, the area range R may be a range where the vehicle B is the center of the circle and is located within a specific radius value. When the sensor 11 detects the road use device P in the area R, please refer to step S6: The sensor 11 obtains the vehicle distance and vehicle speed associated with another vehicle A, and transmits the vehicle distance and vehicle speed to the control器14; The sensor 11 is set on the vehicle B. After the controller 14 receives the vehicle distance and vehicle speed and executes steps S0 to S3, please refer to step S7: the V2X communication component transmits a warning signal to the road user device P. Here, the V2X communication component is an implementation aspect of the communication component 13, wherein the V2X communication component transmits the warning signal to the road device P using the V2P communication protocol. In addition, the road user device P can be a device that can be configured with V2X communication components, such as a mobile phone or a smart wearable device, to receive warning signals. On the other hand, please refer to step S8: V2X communication components 13 Send a warning signal to another vehicle A to remind another vehicle A to slow down and avoid accidents.

It is worth mentioning that the controller 14 can also compare the speed of the road device P with that of another vehicle A, and send a warning signal to a slower object. In addition, the scenario shown in FIG. 5B is only used to describe this embodiment, and the road-using device P may also be a locomotive or a car, and does not limit the present invention.

Please refer to Figure 6. FIG. 6 is a flowchart of a method for real-time traffic warning according to another embodiment of the present invention. After step S0 in FIG. 2, when the vehicle distance is not less than the distance threshold, please refer to step S9: the controller 14 determines whether the vehicle distance is less than another distance threshold, where the other distance threshold is greater than the distance threshold. When the vehicle distance is less than another distance threshold, please refer to step S10: the controller 14 determines whether the vehicle speed is greater than another speed threshold, where the other speed threshold is greater than the speed threshold. In simple terms, steps S9 and S10 indicate that the controller 14 determines whether there is a vehicle with a long distance and a faster speed. When the vehicle speed is greater than another speed threshold, please refer to step S11: the warning element 12 generates another warning signal, where the other warning signal is presented in a different way from the warning signal, such as a sound signal with a different volume or frequency.

To sum up, the real-time road condition warning device and method disclosed in the present invention can detect potential traffic accidents and issue warnings in real time based on the blind spots of vehicles, locomotives and pedestrians when they are moving. In addition, the described device and method can be more Different distances and the moving speed of another vehicle will issue different warnings, so that drivers and pedestrians can more intuitively know the type of potential traffic accident and react immediately.

Although the present invention is disclosed in the foregoing embodiments, it is not intended to limit the present invention. All changes and modifications made without departing from the spirit and scope of the present invention fall within the scope of patent protection of the present invention. For the scope of protection defined by the present invention, please refer to the attached patent scope.

Claims (6)

A real-time road condition warning method includes: receiving a vehicle distance and a vehicle speed with a controller, and determining whether the vehicle distance is less than a distance threshold; when the vehicle distance is less than the distance threshold, the controller determines whether the vehicle speed is Greater than a speed threshold; and when the vehicle speed is greater than the speed threshold, a warning element generates a warning signal; when the vehicle distance is not less than the distance threshold, the controller determines whether the vehicle distance is less than another distance threshold; When the vehicle distance is less than the other distance threshold, the controller determines whether the vehicle speed is greater than another speed threshold; and when the vehicle speed is greater than the another speed threshold, the warning element generates another warning signal; The other distance threshold is greater than the distance threshold, and the another speed threshold is greater than the speed threshold. The warning method according to claim 1, before the controller receives the vehicle distance and the vehicle speed, and determines whether the vehicle distance is less than the distance threshold, the method further includes: obtaining the vehicle associated with a vehicle by a sensor The distance of the vehicle and the speed of the vehicle are transmitted to the controller. The warning method according to claim 2, wherein the sensor is configured on a road-use device, and the vehicle distance and the vehicle speed associated with the vehicle are obtained by the sensor and transmitted to the controller, including : Use the sensor to determine a moving direction of the road-use device; use the sensor to determine whether there is the vehicle in a direction substantially parallel to the moving direction; and when the sensor determines that there is the vehicle in the direction To obtain the vehicle distance and the vehicle speed associated with the vehicle by the sensor. The warning method according to claim 2, wherein the sensor is configured on a road-use device, and the vehicle distance and the vehicle speed associated with the vehicle are obtained by the sensor and transmitted to the controller, including : Use the sensor to determine a moving direction of the road-use device; use the sensor to determine whether there is the vehicle on two sides substantially perpendicular to the moving direction; and when the sensor determines that the two sides are upward The vehicle uses the sensor to obtain the vehicle distance and the vehicle speed associated with the vehicle. The warning method according to claim 1, wherein a sensor and a V2X communication component are arranged on a vehicle, and the controller receives the vehicle distance and the vehicle speed, and determines whether the vehicle distance is less than the distance threshold Before, it further includes: judging by the sensor whether a road-using device is detected within an area; and When the sensor detects the road use device within the area, the sensor obtains the vehicle distance and the vehicle speed associated with another vehicle, and transmits the vehicle distance and the vehicle speed to the Controller; wherein after the warning signal is generated by the warning component, it further includes: sending the warning signal to the road device by the V2X communication component. The warning method according to claim 1, wherein one of the other vehicles is equipped with a V2X communication component, and after the warning signal is generated by the warning component, it further includes: transmitting the warning signal to the other vehicle by the V2X communication component.

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