TWI796034B - System for issuing warnings according to risk score of vehicle driving - Google Patents

Abstract

A system for issuing warnings according to risk score of vehicle driving includes an on-board diagnostic system, a warning device, a detection unit, and a control unit. When the detection unit detects a foreign object in a detection area, the control unit retrieves a plurality of vehicle information through the on-board diagnostic system. The control unit calculates a risk summation score, and then sets a plurality of intervals from low to high according to the retrieved vehicle information. When the risk summation score falls in one of the intervals, the control unit controls the warning device to issue an alert corresponding to the one of the intervals, and to the intervals below the one of the intervals. In this way, foreign objects, such as pedestrians and drivers, can quickly understand the level of risk, and then make more appropriate judgments.

Description

A system that issues alerts based on a vehicle's risk score

The invention relates to a warning system for a vehicle, especially a system that warns other people and vehicles according to the risk score of the vehicle.

When a large vehicle turns, a difference of radius between inner wheels (difference of radius between inner wheels) area will be formed due to the long axle. Once people and vehicles enter this area, traffic accidents of large vehicles will often be caused.

Therefore, Chinese Patent No. CN 108437888 B provides an active early warning method for eliminating the projected dangerous boundary of the internal wheel differential hidden danger system. The system includes an output unit, an input unit, and a control unit; the output unit includes three groups Micro motors and three groups of laser lamps respectively arranged on the output shafts of three groups of micro motors, the three groups of micro motors are respectively arranged at the front wheel, the middle wheel and the rear wheel near the right side of the large vehicle body; the input unit is CAN bus bar; the control unit includes a single-chip microcomputer, a speed sensor, and a corner sensor, and the single-chip microcomputer reads the output signals of the speed sensor and the corner sensor through the CAN bus bar to obtain the speed of the front wheel and the rear wheel and For the parameters of the rotation angle, the output terminals of the single-chip microcomputer respectively control and connect three groups of micro-motors.

The aforementioned patent case actively reveals the dangerous area, so as to achieve the purpose of avoiding pedestrians, making the vehicle turn safely and avoiding traffic accidents. However, the aforementioned patents only show the danger zone, People and vehicles in or near the dangerous area cannot judge the level of the risk of an accident, and there are still deficiencies.

Therefore, the inventor proposes a system for issuing warnings based on the risk score of vehicle driving, which is installed in a vehicle. The system for issuing warnings based on the risk score of vehicle driving includes: an on-board diagnostic system, installed in the vehicle; a warning device , set on the vehicle; a detection unit, set on the vehicle, the detection unit detects a foreign object in a detection range of the vehicle; and a control unit, signally connected to the on-board diagnostic system, the warning device and the detection unit, the control unit is integrated in the on-board diagnostic system; when the detection unit detects the foreign object in the detection range, the detection unit sends a detection signal to the control unit; the detection unit After the control unit receives the detection signal, it obtains a plurality of vehicle information through the on-board diagnostic system. The vehicle information includes: whether a steering wheel of the vehicle is rotated and the degree of rotation, whether a direction light of the vehicle is activated, and a steering wheel of the vehicle. rate of turn, a turning angle of the vehicle, whether and to what extent an accelerator of the vehicle is activated, whether and to what extent a brake of the vehicle is activated, and a wheelbase of the vehicle, or a combination thereof; A risk score is specified for each vehicle information obtained, and the risk scores of each vehicle information are summed up to obtain a risk total score, and then multiple intervals from low to high are set according to the obtained vehicle information, each time Each interval has a corresponding warning; when the total risk score falls within one of the intervals, the control unit controls the warning device to issue the warning corresponding to one of the intervals, and the interval lower than the one of the intervals corresponding to this warning.

Further, the warning device includes a vehicle side light unit, the vehicle side light unit is arranged outside the vehicle and connected to the control unit; the control unit controls the vehicle side light unit to project a character or a pattern to a side of the vehicle ground for this warning.

Further, the warning device includes a vehicle side light unit, which is arranged outside the vehicle and connected to the control unit; the control unit controls the vehicle side light unit to project an area corresponding to an inner wheel differential range of the vehicle block or a boundary to a ground on the side of the vehicle as the warning.

Wherein, the inner wheel difference range is obtained by the control unit through joint calculation of the turning rate, the turning angle and the wheelbase.

Further, the warning device includes a vehicle side light unit, the vehicle side light unit is arranged outside the vehicle and connected to the control unit with signals, and the vehicle side light unit is a plurality of array pointing light emitting diodes; the control unit is based on The detection signal obtained by the detection unit controls the array of directional light emitting diodes closest to the foreign object to be extinguished as the warning.

Further, the warning device includes a vehicle side light unit and a water mist unit, the vehicle side light unit and the water mist unit are both arranged outside the vehicle and connected to the control unit with signals; the control unit controls the water mist unit on the A water mist is formed near the vehicle, and the light unit on the side of the vehicle is controlled to project a character or a pattern onto the water mist as the warning.

Further, the warning device includes a sound warning unit, which is arranged on the vehicle and connected to the control unit; the control unit controls the sound warning unit to emit a sound as the warning.

Further, the control unit controls the flashing frequency of the direction light to increase via the on-board diagnostic system as the warning.

Further, a positioning unit is arranged on the vehicle and connected to the control unit by signal; the control unit obtains one of weather information, road information and historical traffic accident information near the vehicle according to the positioning information obtained by the positioning unit, or The combination is used as the vehicle information.

Wherein, the on-board diagnostic system intercepts the steering wheel, the turn signal, the accelerator and the brake of the vehicle as the vehicle information through a standard SAE J1939 bridge, and the signals are connected to an external network.

According to the above-mentioned technical characteristics, the following effects can be preferably achieved:

1. Taking the turning of the vehicle as an example, the present invention uses the risk summation score to match the warnings in different areas. For foreign objects in the detection range, such as pedestrians or drivers, the risk level can be quickly understood, and a more appropriate judgment can be made.

2. Based on the collocation of various vehicle information, instead of simply relying on the turning rate and turning angle to judge the risk level, the accuracy can be improved.

3. In addition to the vehicle information of the vehicle itself, with the positioning unit, weather information, road information and historical traffic accident information can also be used as vehicle information to further improve the accuracy of risk identification.

4. The warning can be the words or patterns projected by the light unit on the side of the vehicle to the ground on the side of the vehicle. Even if pedestrians or drivers are right on the side of the vehicle and cannot see the direction lights of the vehicle, they can also notice that the vehicle is about to turn through these words or patterns. .

5. The warning can be projected by the light unit on the side of the vehicle to the block or boundary of the ground on the side of the vehicle, which is convenient for pedestrians or drivers to identify the inner wheel difference range.

6. The warning can be controlled to turn off the array pointing light-emitting diode closest to the foreign object, and form a dark light effect on the foreign object, not only will not cause glare to pedestrians or driving, but also can assist the driving of vehicles from outside at night Object lights notice foreign objects.

7. The warning can be words or patterns formed on the water mist, or even sound, which makes it easier for pedestrians or drivers to notice that the vehicle is going to turn or stop, etc.

8. The warning can be that the blinking frequency of the directional lights is increased. Even if they are not staring at the directional lights of the vehicle, pedestrians or drivers can easily notice the directional lights of the vehicle from the flickering changes in the field of vision.

1: On-board diagnostic system

2: Control unit

3: warning device

31: Car side light unit

32:Water mist unit

33: Sound warning unit

4: Detection unit

5: Positioning unit

6: Standard SAE J1939 bridge

A: Vehicle

A1: steering wheel

A2: Direction lights

A3: Throttle

A4: brake

A5: rear view mirror

B: foreign matter

C: pattern

D, E: range of inner wheel difference

[Picture 1] is the first schematic diagram of the implementation of the embodiment of the present invention, which shows that the system for issuing warnings based on the risk score of the vehicle is installed in the vehicle.

[The second figure] is a partial enlarged view of the embodiment of the present invention, showing the detection unit, the side light unit and the water mist unit.

[The third figure] is a system block diagram of the embodiment of the present invention.

[Figure 4] is the second implementation schematic diagram of the embodiment of the present invention, showing that the detection unit detects foreign objects.

[FIG. 5] is the third schematic diagram of the implementation of the embodiment of the present invention, indicating that the light unit on the side of the car projects a pattern to the ground as a warning.

[Figure 6] is the fourth schematic diagram of the implementation of the embodiment of the present invention, indicating that the light unit on the side of the car projects a pattern onto the water mist as a warning.

[Fig. 7] is the fifth implementation schematic diagram of the embodiment of the present invention, indicating that the light unit on the side of the car corresponds to the inner wheel differential range and projects the block to the ground as a warning.

[Figure 8] is the implementation schematic diagram 6 of the embodiment of the present invention, indicating that the light unit on the side of the vehicle projects a larger block corresponding to the inner wheel differential range to the ground as a warning.

[Figure 9] is the implementation schematic diagram 7 of the embodiment of the present invention, indicating that the light unit on the side of the vehicle closest to the foreign object is extinguished as a warning.

Based on the above-mentioned technical features, the main functions of the system of the present invention for issuing warnings according to the risk scores of vehicles will be clearly presented in the following embodiments.

Please refer to the first figure to the third figure, which disclose the system for issuing warnings according to the risk score of the vehicle in the embodiment of the present invention. It is set in a vehicle A, and the vehicle A includes a steering wheel A1, a direction light A2, and an accelerator A3 , a brake A4 and a rear mirror A5. In a preferred embodiment of the present invention, the vehicle A is an example of a larger connected vehicle. In actual implementation, the vehicle A can also be other large vehicles such as buses and trucks, or general small vehicles. The present invention Not limited.

The system that issues alerts based on a vehicle's risk score for travel includes:

An on-board diagnostic system 1 (on-board diagnostic, OBD) is installed in the vehicle A.

A control unit 2 is integrated in the on-board diagnostic system 1 .

A warning device 3 is arranged on the vehicle A, and the warning device 3 includes a vehicle side light unit 31 , a water mist unit 32 and an audio warning unit 33 which are all signally connected to the control unit 2 . Both the vehicle side light unit 31 and the water mist unit 32 are arranged outside the vehicle A, for example, can be arranged around the vehicle A, or arranged at the side and rear of the vehicle A which tend to become blind spots. Preferably, the vehicle side light unit 31 is a plurality of arrays of directional light emitting diodes. The sound warning unit 33 can be arranged inside or outside the vehicle A, and the sound warning unit 33 is, for example, a buzzer or a voice warning device.

A detection unit 4 is arranged on the vehicle A, and the detection unit 4 is connected to the control unit 2 with a signal.

A positioning unit 5 is arranged on the vehicle A, and the positioning unit 5 is connected to the control unit 2 with signals. Preferably, the positioning unit 5 is also integrated into the OBD system 1 .

In a preferred embodiment of the present invention, the on-board diagnostic system 1 intercepts the steering wheel A1, the turn signal A2, the gas pedal A3, the The actuation of the brake A4, and the signal is connected to an external network (not shown). Wherein, the SAE in the standard SAE J1939 bridge 6 refers to the International Society of Automotive Engineers, and the standard SAE J1939 bridge 6 is a bridge adopting the SAE J1939 protocol.

Please refer to the third and fourth figures, the detection unit 4 can detect an outsider in the detection range of the vehicle A by such detection methods as optical, magnetic, ultrasonic, radar, image recognition, etc. Object B. However, the detailed detection principle and required equipment can naturally be selected and applied according to the selected detection method, and will not be repeated here.

In a preferred embodiment of the present invention, the foreign object B is a small car as an example. In actual implementation, the foreign object B can also be pedestrians, motorcycles, bicycles, etc. that are easier to be located in the blind spot of the vehicle A. Even the foreign object B may be a large vehicle, and the present invention is not limited thereto. It should be added that, depending on the meaning of the text, the foreign object B mentioned below may refer to "people" such as pedestrians and drivers, or may refer to "cars" such as small cars, motorcycles, and bicycles.

When the foreign object B enters the detection range, the detection unit 4 will send out a detection signal and send it to the control unit 2 .

After the control unit 2 receives the detection signal, it obtains a plurality of vehicle information through the OBD system 1, but how the OBD system 1 and the control unit 2 integrated into the OBD system 1 obtain the vehicle information has been The mature technology will not be repeated here.

The vehicle information includes: whether the steering wheel A1 is turned and how much it is turned, whether the direction light A2 is activated, a turning speed of the vehicle A, a turning angle of the vehicle A, whether the accelerator A3 is triggered and how much it is triggered, the brake Whether A4 is triggered and the degree of triggering and a wheelbase of the vehicle A, etc., the control unit 2 can also obtain a location information according to the positioning unit 5, and obtain a weather information, a road information and a history near the vehicle A Car accident information and the like are used as the vehicle information.

The control unit 2 assigns a risk score to each obtained vehicle information, and adds up the risk scores of each vehicle information to obtain a risk summation score, and then sets the risk score from low to low according to the obtained vehicle information. The highest plurality of intervals, each of which has a corresponding alert.

When the total risk score falls within one of the intervals, the control unit 2 controls the warning device 3 to issue the warning corresponding to one of the intervals and the warning corresponding to the interval lower than the one of the intervals.

The designation of the risk score is simply illustrated as follows. In actual implementation, each value is not limited to this, and there is no need to set an upper limit:

In terms of whether the steering wheel A1 is turning or not and the degree of turning, if the steering wheel A1 is not turned (when the vehicle A is going straight), it can be designated as 0 points, and 1 point can be added for every 20 degrees of turning of the steering wheel A1, and it can be set that the steering wheel A1 turns more than one turn. The upper limit is 20 points.

In terms of whether the direction light A2 is activated or not, it can be designated as 0 points when the direction light A2 is not activated, and it is designated as 20 points once the direction light A2 is turned on.

In terms of the turning rate, if the turning rate is 0 km/h, it is designated as 0 points, and for every increase of 2 km/h, 1 point is added, and the upper limit of 20 points can be set if the turning rate exceeds 30 km/h.

In terms of the turning angle, it can be set as the angle of a tire of the vehicle A, or the angle of a head of the vehicle A, and so on. If the turning angle is the angle of the tire, then the vehicle A can be designated as 0 points when going straight, and 1 point will be added for every 3 degrees of the tire rotation, and the upper limit of 20 points can be set when the tire turns more than 45 degrees.

In terms of whether the accelerator A3 or the brake A4 is triggered and the degree of triggering, when the accelerator A3 is not stepped on, it can be designated as 0 points, and every 5 degrees or 2 mm is added to add 1 point, and the oil can be set. Door A3 stepping on half of the maximum height or angle is the upper limit of 20 points. The brake A4 is the opposite. When the brake A4 is stepped on the maximum height or angle, it can be designated as 0 points, and 1 point is added for every 5 degrees or 2 millimeters released, and it can be set to release half of the maximum height or angle of the brake A4. The upper limit is 20 points.

Taking the wheelbase as an example, 0 points can be set for 2 meters and below, and 1 point can be added for every increase of 30 cm, and the upper limit of 20 points can be set for the wheelbase of 6 meters and above.

Taking the weather information as an example, the control unit 2 can obtain real-time weather, sunrise and sunset times from the website of the Meteorological Bureau through the external network, and can adjust the risk score according to changes in visibility, rain or shine, and day and night. Visibility above 5 kilometers can be designated as 0 points, and 1 point is added for every decrease of 0.2 kilometers. If the visibility is less than 1 km, the upper limit is 20 points; clear weather or daytime is designated as 0 points, cloudy weather or early morning and evening is designated as 5 points, and rainy or The night is designated as 10 points, and the visibility, cloudy, rainy, and day and night changes can also be combined to calculate the upper limit, such as 30 points.

Taking the road information as an example, the control unit 2 can obtain the road conditions near the vehicle A, the width of the road surface, whether there is a motorway lane, the traffic flow, etc., through the external network, on websites such as online maps and the General Administration of Highways, etc. to adjust the risk score. When the road conditions are worse, the road surface is narrower, and the traffic volume is larger, the risk score can be designated as higher, and the upper limit can be combined and calculated as 20 points. For example, when there is no lane near the vehicle A but the traffic volume is heavy, the driving of the vehicle A may The risk score can be higher if the locomotive is not noticed.

Taking the historical car accident information as an example, the control unit 2 can obtain the car accidents that have occurred near the vehicle A from websites such as the Police Department through the external network. If car accidents occur more often near the vehicle A, especially large car accidents, the risk score can be designated as higher, and the upper limit can be designated as 20 points.

According to the above example, assuming that the vehicle information obtained by the control unit 2 is the turning rate, the wheelbase and the weather information, the control unit 2 can set the interval according to the turning rate, the wheelbase and the weather information. For example, the turning rate is 0 to 20 minutes, the wheelbase is 0 to 20 minutes, and the weather information is combined and calculated as 0 to 30 minutes, that is, a maximum of 70 points can be obtained, and the control unit 2 can be set to 0 Points (inclusive) to 30 points (exclusive) is a first interval, 30 points (inclusive) to 60 points (exclusive) is a second interval, and above 60 points (inclusive) is a third interval.

The control unit 2 sums up the risk score of the turning rate, the wheelbase and the weather information to calculate the risk sum score. For example, if the turning speed is 20 km/h, then the risk score is 10 points; if the wheelbase is 5 meters, then the risk score is 10 points; if the visibility is less than 1 km and it is a rainy night, then the risk score is 30 points. The final risk total score is 50 points, and if it falls in the second interval, the control unit 2 will control the warning device 3 to issue the warning corresponding to the second interval and the warning corresponding to the first interval.

Please refer to Figure 3 and Figure 5, taking the three intervals mentioned above as an example, the first interval is relatively low risk, and the control unit 2 can control the side light unit 31 to project a character or a pattern C to a ground on the side of the vehicle A as the warning for the first section.

Preferably, when the foreign object B cannot notice that the vehicle A is about to turn, it is often when it is parallel to the vehicle A, or when the direction light A2 of the vehicle is blocked by the A-pillar of the foreign object B, so the text or The pattern C can be projected obliquely in front of the vehicle A, on the ground near the rear-view mirror A5, and on the same side as the foreign object B, so as to ensure that the foreign object B cannot see the direction light A2 of the vehicle A , you can also notice that the vehicle A is going to turn through the text or the pattern C.

In actual implementation, since the warning can also be issued when the vehicle A is not turning, the text or the pattern C is not limited to turning, and can also be a signal of going straight or reversing.

Please refer to the third figure and the sixth figure, the risk of the second zone is higher than that of the first zone, the control unit 2 can control the water mist unit 32 to form a water mist near the vehicle A, and control the vehicle side The light unit 31 projects the two-dimensional or three-dimensional characters or the pattern C onto the water mist as the warning of the second section.

In a preferred embodiment of the present invention, the water mist unit 32 forms the water mist directly behind the vehicle A, and the vehicle side light unit 31 projects the pattern C to the water mist directly behind the vehicle A; During actual implementation, when the line of sight of the vehicle A or the foreign object B is not affected, the water mist unit 32 may also form the water mist on the side or obliquely rear of the vehicle A for projection by the vehicle side light unit 31 .

Please refer to the third figure, the seventh figure and the eighth figure, the control unit 2 can control the side light unit 31 to project a block or a border to the vehicle A corresponding to the inner wheel difference range D, E of the vehicle A The ground on the side is used as the warning of the third section.

Only the inner wheel difference range D, E is simply shown in the diagram, and the block or the boundary can just meet the inner wheel difference range D, E or exceed the inner wheel difference range D, E, and only project the area beyond the inner wheel difference range D, E The inner wheel differential range D, E outside the body of the vehicle A is convenient for the foreign object B to identify the inner wheel differential range D, E. It is also possible to use more of the vehicle side light units 31 to form a more complete block or boundary.

When the total risk score falls within the third interval, in addition to the warning in the third interval, there will also be the warning in the first interval and the alert in the second interval. However, in the seventh and eighth figures, only the warning of the first zone (the pattern C projected on the ground) is drawn, but the warning of the second zone is not drawn.

The inner wheel difference range D and E are calculated by the control unit 2 from the turning rate, the turning angle and the wheelbase. For the same vehicle A with the fixed turning angle, the turning rate The smaller the value is, the smaller the inner wheel difference range D will be, and the larger the turning rate will be, the larger the inner wheel difference range E will be. However, the detailed calculation process of the inner wheel differential range D, E is not the key point of the present invention, and will not be repeated here.

In addition to corresponding to the inner wheel difference range D, E projects the block or the boundary. The control unit 2 can also control the sound warning unit 33 to emit a sound, or the control unit 2 can control the blinking frequency of the direction lamp A2 to increase through the on-board diagnostic system 1 as the warning of the third section.

The sound can make it easier for the foreign object B to notice that the vehicle A is going to turn or stop, etc.; B is also easy to notice the direction light A2 of the vehicle A from the flickering changes in the field of view, both of which can assist the foreign object B to notice the dynamics of the vehicle A.

Please refer to the third figure and the ninth figure, the control unit 2 can also control the vehicle side light unit 31 closest to the foreign object B to extinguish according to the detection signal obtained by the detection unit 4 (indicated by a dotted line in the figure ) as the warning for any one of said intervals.

Since the vehicle side light unit 31 closest to the foreign object B is extinguished, the vehicle side light unit 31 will not directly shine on the foreign object B, not only will not cause glare of the foreign object B, but also can assist the vehicle A at night The driver noticed the foreign object B from the light of the foreign object B.

Please refer to the third and fourth pictures again, through the combination of the risk summation score and the warning in different ranges, and according to the collocation of various vehicle information, the accuracy of risk judgment is further improved, so that in the detection The foreign object B in the range can quickly understand the risk that the vehicle A may cause danger to itself, and then make a more appropriate judgment, such as how much to slow down, etc., to improve safety.

Based on the description of the above-mentioned embodiments, the operation of the present invention, use and the effect produced by the present invention can be fully understood, but the above-mentioned embodiments are only preferred embodiments of the present invention, and should not be used in this way. Limiting the scope of implementation of the present invention, that is, simple equivalent changes and modifications made according to the scope of the patent application for the present invention and the contents of the description of the invention, all fall within the scope of the present invention.

31: Car side light unit

32:Water mist unit

4: Detection unit

A: Vehicle

A2: Direction lights

A5: rear view mirror

Claims (10)

A system for issuing warnings based on the risk score of vehicle driving, which is set in a vehicle, and the system for issuing warnings based on the risk score of vehicle driving includes: an on-board diagnostic system, set in the vehicle; a warning device, set in the vehicle; A detection unit is arranged on the vehicle, and the detection unit detects a foreign object within a detection range of the vehicle; and a control unit is signal-connected to the on-board diagnostic system, the warning device and the detection unit, the The control unit is integrated in the on-board diagnostic system; when the detection unit detects the foreign object in the detection range, the detection unit sends a detection signal to the control unit; the control unit receives the detection After the signal, a plurality of vehicle information is obtained through the on-board diagnostic system. The vehicle information includes: whether a steering wheel of the vehicle is rotated and the degree of rotation, whether a turn signal of the vehicle is activated, a turning speed of the vehicle, a Turning angle, whether the accelerator of the vehicle is triggered and the degree of triggering, whether the brake of the vehicle is triggered and the degree of triggering, and one or a combination of a wheelbase of the vehicle; Designate a risk score, and add up the risk scores of each vehicle information to obtain a risk total score, and then set multiple intervals from low to high according to the obtained vehicle information, and each interval has a corresponding Warning; when the risk sum score falls within one of the ranges, the control unit controls the warning device to issue the warning corresponding to one of the ranges and the warning corresponding to the range lower than the one of the ranges. The system for issuing warnings according to the risk score of vehicle driving as described in claim 1, further, the warning device includes a vehicle side light unit, and the vehicle side light unit is arranged on the outside of the vehicle and signals The control unit is connected to the control unit; the control unit controls the vehicle side light unit to project a character or a pattern to a ground on the side of the vehicle as the warning. The system for issuing warnings according to the risk score of vehicle driving as described in claim 1, further, the warning device includes a vehicle side light unit, the vehicle side light unit is arranged outside the vehicle and is connected to the control unit by signal; the control unit Controlling the vehicle side light unit to project a block or a boundary corresponding to an inner wheel differential range of the vehicle to a ground on the side of the vehicle as the warning. The system for issuing warnings according to the risk score of the vehicle as claimed in claim 3, wherein the inner wheel differential range is jointly calculated and obtained by the control unit from the turning rate, the turning angle and the wheelbase. The system for issuing warnings according to the risk score of vehicle driving as described in claim 1, further, the warning device includes a vehicle side light unit, the vehicle side light unit is arranged on the outside of the vehicle and is connected to the control unit by signal, and the vehicle The side light unit is a plurality of arrays of directional light-emitting diodes; the control unit controls the array of directional light-emitting diodes closest to the foreign object to be extinguished according to the detection signal obtained by the detection unit, as The warning. The system for issuing warnings according to the risk score of vehicle driving as described in claim 1, further, the warning device includes a vehicle side light unit and a water mist unit, and the vehicle side light unit and the water mist unit are both arranged on the vehicle The external signal is connected to the control unit; the control unit controls the water mist unit to form a water mist near the vehicle, and controls the vehicle side light unit to project a character or a pattern onto the water mist as the warning. The system for issuing warnings according to the risk score of vehicle driving as described in claim 1, further, the warning device includes a sound warning unit, the sound warning unit is arranged on the vehicle and connected to the control unit; the control unit controls the sound The warning unit emits a sound as the warning. According to the system for issuing warnings according to the risk score of vehicle driving as described in Claim 1, further, the control unit controls the blinking frequency of the direction lights to increase through the on-board diagnostic system as the warning. As described in claim 1, the system for issuing warnings according to the risk score of vehicle driving, further, a positioning unit is arranged on the vehicle and connected to the control unit; the control unit obtains the vehicle according to the positioning information obtained by the positioning unit One or a combination of nearby weather information, road information, and historical traffic accident information is used as the vehicle information. The system for issuing warnings according to the risk score of vehicle driving as described in claim 1, wherein the on-board diagnostic system intercepts the steering wheel, the turn signal, the accelerator and the brake of the vehicle through a standard SAE J1939 bridge Action as the vehicle information, and signal connection to an external network.

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