CN113879212A - Truck rear-end collision prevention safety early warning system and method based on radar - Google Patents
Truck rear-end collision prevention safety early warning system and method based on radar Download PDFInfo
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- CN113879212A CN113879212A CN202111334866.2A CN202111334866A CN113879212A CN 113879212 A CN113879212 A CN 113879212A CN 202111334866 A CN202111334866 A CN 202111334866A CN 113879212 A CN113879212 A CN 113879212A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
- B60Q9/00—Arrangement or adaptation of signal devices not provided for in one of main groups B60Q1/00 - B60Q7/00, e.g. haptic signalling
- B60Q9/008—Arrangement or adaptation of signal devices not provided for in one of main groups B60Q1/00 - B60Q7/00, e.g. haptic signalling for anti-collision purposes
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Abstract
The invention relates to the technical field of vehicle safety early warning, and discloses a radar-based rear-end collision prevention safety early warning system and method for a large truck, wherein motion information of a front target vehicle, such as a vehicle-to-vehicle distance, a relative speed and the like, is obtained through a millimeter wave radar probe, and vehicle running state information, such as a vehicle speed, the presence or absence of steering, the presence or absence of braking and the like, is obtained through a vehicle speed sensor, a steering angle sensor, a brake sensor, an accelerator pedal sensor and the like; and when the actual measurement distance between the vehicles is smaller than the dangerous alarm distance, carrying out secondary alarm to prompt the driver to brake immediately so as to avoid the rear-end collision accident.
Description
Technical Field
The invention relates to the technical field of vehicle safety early warning, in particular to a truck rear-end collision prevention safety early warning system and method based on radar.
Background
The rear-end collision is a more accident in various accidents on expressways in China at present, and accounts for about 33 percent of the total number of accidents. The main causes of induction are: (1) the driver is not concentrated, so that carelessness is large or measures are improper; (2) fatigue driving, which is to drive on a highway at high speed for a long time, and the road landscape is single, so that a driver is easy to fatigue, and the judgment capability and the operation accuracy of the driver are reduced; (3) in abnormal weather (such as rain, snow and fog), the visibility is low, the driving safety distance cannot be guaranteed, and meanwhile, the braking effect is difficult to guarantee under the influence of the road surface condition at that time.
Disclosure of Invention
The invention mainly aims to provide a truck rear-end collision prevention safety early warning system and method based on radar, aiming at accurately detecting the motion state of a front vehicle, such as the distance between vehicles, the driving speed and the like, so as to improve the driving safety of a driver on a highway.
In order to achieve the purpose, the truck rear-end collision prevention safety early warning system based on the radar comprises a millimeter wave radar probe, a truck speed sensor, a steering angle sensor, a brake sensor, an accelerator pedal sensor, a road condition selection switch, a central processing unit, a liquid crystal display screen, an alarm buzzer and an alarm indicator lamp, wherein the millimeter wave radar probe, the truck speed sensor, the steering angle sensor, the brake sensor, the accelerator pedal sensor, the road condition selection switch, the liquid crystal display screen, the alarm buzzer and the alarm indicator lamp are respectively in data connection with the central processing unit, the liquid crystal display screen is arranged in a cab, the alarm buzzer and the alarm indicator lamp are respectively arranged on the side wall of a truck, the liquid crystal display screen is used for displaying the actual distance and the relative speed between two trucks, and the alarm buzzer and the alarm indicator lamp are respectively used for providing sound alarm and indicator lamp alarm, timely alarming can effectively remind the driver to take proper countermeasures.
Optionally, the central processor is a 32-bit ARM9 processor.
The invention also provides a truck rear-end collision prevention safety early warning method based on the radar, which is implemented by adopting the system and comprises the following steps:
the millimeter wave radar probe is used for obtaining motion information of a front target vehicle, such as a vehicle-to-vehicle distance and a relative speed;
the vehicle speed sensor, the steering angle sensor, the brake sensor and the accelerator pedal sensor are used for acquiring running state information of the vehicle, such as the speed, the steering, the braking and the like of the vehicle, and transmitting the information to the central processing unit for data processing;
calculating the current safe distance to be kept according to the speed and the relative speed of the vehicle and the established safe distance calculation model by the central processing unit and comparing the current safe distance with the actually measured distance between the vehicles;
if the actual measurement workshop distance is greater than the reminding alarm distance, entering the next working cycle; if the actual measurement workshop distance is smaller than the reminding alarm distance, carrying out alarm once to remind a driver to release the accelerator and prepare for braking; and when the actual measurement distance between the vehicles is smaller than the dangerous alarm distance, carrying out secondary alarm to prompt the driver to brake immediately so as to avoid the rear-end collision accident.
By adopting the technical scheme of the invention, the invention has the following beneficial effects: according to the technical scheme, motion information of a front target vehicle, such as a vehicle distance and a relative speed, is obtained through a millimeter wave radar probe, and vehicle speed sensors, a steering angle sensor, a brake sensor and an accelerator pedal sensor are used for obtaining vehicle running state information, such as vehicle speed, steering, braking and the like, when certain measurement errors and noise exist in the millimeter wave radar probe, a target tracking algorithm built in a central processing unit can enable the millimeter wave radar to accurately detect the motion state of the front vehicle, and according to the vehicle speed, the relative speed and an established safe distance calculation model, a safe distance which needs to be kept at present is calculated and compared with an actually measured vehicle distance, if the actually measured vehicle distance is smaller than a warning alarm distance, an alarm is given once, and a driver is reminded to release an accelerator and prepare for braking; when the actual measurement workshop distance is less than the dangerous warning distance, then carry out secondary alarm, impel the driver to brake immediately to avoid the emergence of rear-end collision accident, improve the driver and go the security on highway, and millimeter wave radar has that the detection performance is stable, the working distance is longer, the environmental suitability is good, compares with ultrasonic radar, and millimeter wave radar has characteristics small, that the quality is light and spatial resolution is high, has higher popularization and use value.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
Fig. 1 is a schematic diagram of an overall frame structure of a truck rear-end collision prevention safety early warning system based on a radar in the invention;
fig. 2 is a flowchart of a truck rear-end collision prevention safety early warning method based on radar according to the present invention.
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that all the directional indicators (such as up, down, left, right, front, and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the movement situation, etc. in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indicator is changed accordingly.
In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.
The invention provides a truck rear-end collision prevention safety early warning system and method based on radar.
As shown in fig. 1 and 2, in an embodiment of the present invention, the radar-based rear-end collision-prevention safety pre-warning system for a large truck includes a millimeter wave radar probe 101, a speed sensor 102, a steering angle sensor 103, a brake sensor 104, an accelerator pedal sensor 105, a road condition selection switch 106, a central processing unit 107, a liquid crystal display 108, a warning buzzer 109 and a warning indicator 110, wherein the millimeter wave radar probe, the speed sensor, the steering angle sensor, the brake sensor, the accelerator pedal sensor, the road condition selection switch, the liquid crystal display, the warning buzzer and the warning indicator are respectively connected to the central processing unit, the liquid crystal display is disposed in a cab, the warning buzzer and the warning indicator are respectively disposed on a side wall of the truck, and the liquid crystal display is used for displaying an actual distance and a relative speed between two trucks, the alarm buzzer and the alarm indicator lamp are respectively used for providing sound alarm and indicator lamp alarm, and timely alarm can effectively remind a driver to take proper countermeasures.
Further, the central processing unit adopts a 32-bit ARM9 processor.
Further, as shown in fig. 2, the invention also provides a truck rear-end collision prevention safety early warning method based on radar, which is implemented by adopting the system and comprises the following steps:
s100, obtaining motion information of a front target vehicle, such as a vehicle-to-vehicle distance and a relative speed, through the millimeter wave radar probe;
s200, obtaining running state information of the vehicle, such as the speed, the steering or not, the braking or not and the like of the vehicle through the vehicle speed sensor, the steering angle sensor, the braking sensor and the accelerator pedal sensor, and transmitting the information to a central processing unit for data processing;
s300, calculating the current safe distance to be kept by the central processing unit according to the speed and the relative speed of the vehicle and the established safe distance calculation model and comparing the current safe distance with the actually measured distance between the vehicles;
s400, if the actually measured workshop distance is greater than the reminding alarm distance, entering the next working cycle; if the actual measurement workshop distance is smaller than the reminding alarm distance, carrying out alarm once to remind a driver to release the accelerator and prepare for braking; and when the actual measurement distance between the vehicles is smaller than the dangerous alarm distance, carrying out secondary alarm to prompt the driver to brake immediately so as to avoid the rear-end collision accident.
Specifically, the motion information of a front target vehicle, such as a vehicle distance and a relative speed, is obtained through a millimeter wave radar probe, and the running state information of the vehicle, such as the vehicle speed, the steering angle sensor, a brake sensor and an accelerator pedal sensor, is obtained through the vehicle speed sensor, the steering angle sensor, the brake sensor and the accelerator pedal sensor, the running state information of the vehicle, such as the vehicle speed, the steering state, the braking state and the like, when the millimeter wave radar probe has certain measurement errors and noise, a target tracking algorithm built in a central processing unit can enable the millimeter wave radar to accurately detect the motion state of the front vehicle, and according to the vehicle speed, the relative speed and an established safe distance calculation model, the safe distance which is required to be kept at present is calculated and compared with the actually measured vehicle distance, if the actually measured vehicle distance is smaller than a reminding alarm distance, an alarm is given once, and a driver is reminded to release an accelerator and prepare for braking; when the actual measurement workshop distance is less than the dangerous warning distance, then carry out secondary alarm, impel the driver to brake immediately to avoid the emergence of rear-end collision accident, improve the driver and go the security on highway, and millimeter wave radar has that the detection performance is stable, the working distance is longer, the environmental suitability is good, compares with ultrasonic radar, and millimeter wave radar has characteristics small, that the quality is light and spatial resolution is high, has higher popularization and use value.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (3)
1. A truck rear-end collision prevention safety early warning system based on radar is characterized by comprising a millimeter wave radar probe, a truck speed sensor, a steering angle sensor, a brake sensor, an accelerator pedal sensor, a road condition selection switch, a central processing unit, a liquid crystal display screen, an alarm buzzer and an alarm indicator lamp, wherein the millimeter wave radar probe, the truck speed sensor, the steering angle sensor, the brake sensor, the accelerator pedal sensor, the road condition selection switch, the liquid crystal display screen, the alarm buzzer and the alarm indicator lamp are respectively in data connection with the central processing unit, the liquid crystal display screen is arranged in a cab, the alarm buzzer and the alarm indicator lamp are respectively arranged on the side wall of a truck, the liquid crystal display screen is used for displaying the actual distance and the relative speed between two trucks, and the alarm buzzer and the alarm indicator lamp are respectively used for providing sound alarm and indicator lamp alarm, timely alarming can effectively remind the driver to take proper countermeasures.
2. The radar-based truck rear-end collision avoidance safety precaution system of claim 1, wherein said central processor employs a 32-bit ARM9 processor.
3. The radar-based truck rear-end collision prevention safety precaution method according to claim 1, carried out with the system of any one of claims 1-2, comprising the steps of:
the millimeter wave radar probe is used for obtaining motion information of a front target vehicle, such as a vehicle-to-vehicle distance and a relative speed;
the vehicle speed sensor, the steering angle sensor, the brake sensor and the accelerator pedal sensor are used for acquiring running state information of the vehicle, such as the speed, the steering, the braking and the like of the vehicle, and transmitting the information to the central processing unit for data processing;
calculating the current safe distance to be kept according to the speed and the relative speed of the vehicle and the established safe distance calculation model by the central processing unit and comparing the current safe distance with the actually measured distance between the vehicles;
if the actual measurement workshop distance is greater than the reminding alarm distance, entering the next working cycle; if the actual measurement workshop distance is smaller than the reminding alarm distance, carrying out alarm once to remind a driver to release the accelerator and prepare for braking; and when the actual measurement distance between the vehicles is smaller than the dangerous alarm distance, carrying out secondary alarm to prompt the driver to brake immediately so as to avoid the rear-end collision accident.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111334866.2A CN113879212A (en) | 2021-11-11 | 2021-11-11 | Truck rear-end collision prevention safety early warning system and method based on radar |
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| CN202111334866.2A CN113879212A (en) | 2021-11-11 | 2021-11-11 | Truck rear-end collision prevention safety early warning system and method based on radar |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114604209A (en) * | 2022-03-17 | 2022-06-10 | 西安法士特汽车传动有限公司 | VCU emergency braking auxiliary control system and method for pure electric commercial vehicle |
| CN115416629A (en) * | 2022-08-25 | 2022-12-02 | 深圳市蓝度汽车电控技术有限公司 | Vehicle braking method and device, terminal equipment and storage medium |
-
2021
- 2021-11-11 CN CN202111334866.2A patent/CN113879212A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114604209A (en) * | 2022-03-17 | 2022-06-10 | 西安法士特汽车传动有限公司 | VCU emergency braking auxiliary control system and method for pure electric commercial vehicle |
| CN115416629A (en) * | 2022-08-25 | 2022-12-02 | 深圳市蓝度汽车电控技术有限公司 | Vehicle braking method and device, terminal equipment and storage medium |
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Application publication date: 20220104 |