CN113538913A - Expressway overtaking prompt and psychological intervention device and method - Google Patents

Abstract

The invention discloses an expressway overtaking prompting and psychological intervention device and method, comprising a speed acquisition module, including a speed sensor unit and an information transmission unit I; a distance acquisition module, including a radar ranging unit and an information transmission unit II; a central processing module , the function is to receive and obtain the collected speed and distance information, synthesize the information and make corresponding judgments based on the information; the function of the intervention unit is to carry out early warning and psychological intervention according to different overtaking states. The invention solves the problem of using wireless communication for information communication between vehicles, enables the driver to quickly and accurately react and judge the overtaking operation, improves the safety of overtaking on the expressway, and reduces the occurrence of traffic accidents.

Description

A kind of expressway overtaking prompt and psychological intervention device and method

technical field

The invention relates to the technical field of intelligent traffic, and more particularly to a device and method for overtaking prompting and psychological intervention on an expressway.

Background technique

With the rapid growth of expressway traffic, the total annual traffic accidents on expressways have also increased, causing serious harm to people's lives and property. According to the research, the phenomenon of "vehicles in the overtaking lane but not reaching a certain speed" often occurs on expressways, and most highway traffic accidents can be avoided by early warning.

At present, the overtaking warning systems researched in China mostly use radar to measure the distance change of the preceding vehicle to calculate the speed and acceleration of the preceding vehicle, and then make an overtaking warning. Based on the development of a new generation of technical information, the use of wireless communication technology to communicate between vehicles to exchange vehicle information in real time is an innovative field in the field of highway overtaking warning technology.

Therefore, it is an urgent problem for those skilled in the art to provide an expressway overtaking prompting and psychological intervention device and method that can effectively improve the safety of expressway overtaking.

SUMMARY OF THE INVENTION

Aiming at the above research status and existing problems, the present invention provides an expressway overtaking prompting and psychological intervention device and method, which can timely warn of possible dangers during expressway overtaking and can reduce the occurrence of a large number of traffic accidents.

In order to achieve the above object, the present invention adopts the following technical solutions:

An expressway overtaking prompt and psychological intervention device and method, installed on a car A, comprising a speed acquisition module, a distance acquisition module, a central processing module and an intervention module; wherein,

The speed acquisition module includes a speed sensor unit and an information transmission unit I, which is used to measure the speed of the current car A and transmit the measured speed information to the central processing module;

The distance acquisition module is used to measure the distance information between the vehicle and the preceding vehicle in the same lane and transmit the measured distance information to the central processing module;

The central processing module is also connected to the information transmission unit III, and receives speed information and distance information from the speed acquisition module and the distance acquisition module.

The central processing module performs pre-overtaking state judgment on the received speed information and distance information, obtains the judgment result, and sends the judgment result to the intervention module for early warning and intervention prompt.

Preferably, the central processing module is mainly a data calculation unit, and adopts an MCS-51 single-chip microcomputer. The data computing unit uses the IO interface to receive information, and comprehensively analyzes the received speed, distance and other information to determine which overtaking state the vehicle belongs to. The central processing module sends the warning command to the intervention module for warning.

The speed acquisition module measures the speed information of the current car A through the speed sensor, and sends the speed information to the information transmission unit I;

Preferably, the speed sensor unit adopts a wheel speed sensor, a Hall element is used as the wheel speed sensor, and the magnetic induction intensity is used as the input signal, and the Hall potential pulse is generated by the change of the magnetic induction intensity with the wheel speed. After the amplification, shaping and power amplification, the pulse sequence is output to the outside.

The information transmission unit I transmits the speed information measured by the speed sensor unit to the information transmission unit III through wireless transmission, and the information transmission unit III receives the speed information and distance information from the speed acquisition module and the distance acquisition module. .

The distance acquisition module includes a radar ranging unit and an information transmission unit II; wherein,

The distance acquisition module measures the distance between the current vehicle A and the preceding vehicle in the same lane through radar, and provides the measured distance information to the information transmission unit II;

Preferably, the distance acquisition module is implemented by a high-precision laser radar, and is installed in front of the vehicle to measure the distance information between the vehicle and the preceding vehicle in the same lane and transmit the measured distance information to the central processing module. The basic principle of lidar is to emit a laser from the inside of the radar. When the laser encounters the front bumper of the front car, it returns and receives it, and then the distance between the two cars is determined according to the receiving time difference between the two.

The information transmission unit II transmits the distance information obtained by the radar measurement to the information transmission unit III through wireless transmission.

The intervention module includes a sound and light alarm device, and the sound and light alarm device respectively performs different prompting operations according to the judgment results of different pre-overtaking states. The information transmission unit III of car A and the information transmission unit III of car B conduct wireless information exchange, and the interactive content includes speed information and distance information of car A and car B.

Preferably, the intervention module is the output part of the system, which is mainly composed of LED warning lights and voice prompts. When the intervention unit receives the command sent from the central processing module, the voice prompter starts to work. The device determines that the vehicle driving in the lane is in a safe state of overtaking, and the safety indicator light is green, and the device will issue a voice warning; Voice warning.

Preferably, the information exchange step has a triggering condition, when the information transmission unit III corresponding to the A car and the B car both receive the speed information and the distance information, and when the distance between the two cars A and B is close to When wireless communication is possible, the information transmission part III of the two cars conducts wireless communication, exchanges the speed and distance of the two cars, stores them in the chip, and updates them continuously to realize the judgment of the overtaking state.

The present invention also provides an overtaking prompt and a psychological intervention method of an expressway overtaking prompt and psychological intervention device, comprising the following steps:

Step 1: Obtain the current speed of car A and the distance information between car A and the vehicle in front of the same lane;

Step 2, receiving the speed information and the distance information, and judging the pre-overtaking state according to the speed information and the distance information, and obtaining a judgment result;

Step 3, according to the judgment result, give an early warning and intervention prompt.

Before the first step, there are also device opening and closing conditions:

Turn-on conditions: turn on when the left turn signal is turned on, and the device starts to work;

Closing conditions: After overtaking is completed, the left turn signal is turned off, and the device is turned off.

The step 2 further includes: wirelessly interacting with car B, the interactive content includes the speed information and distance information of car A and car B, and according to the current speed information of car A and the distance information between two cars A and B, And the speed information of car B, to judge the pre-overtaking state of car A.

The information exchange step has a trigger condition, including: when the distance between the A vehicle and the B vehicle reaches the information exchange range, the speed information and the distance information of the two vehicles are exchanged.

Compared with the prior art, the present invention has the following beneficial effects:

The invention can carry out early warning and prevention and control work for highway overtaking behavior, and utilize wireless communication to realize data sharing and communication between two vehicles, so that vehicle owners can better grasp road conditions and make safety judgments during driving. LED warning lights are also added to the whole unit, which display different colors for the vehicle in different situations. The whole device improves the safety of highway overtaking and reduces the occurrence of traffic accidents.

Description of drawings

In order to explain the embodiments of the present invention or the technical solutions in the prior art more clearly, the following briefly introduces the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only It is an embodiment of the present invention. For those of ordinary skill in the art, other drawings can also be obtained according to the provided drawings without creative work.

Figure 1 is a schematic diagram of the system composition of an expressway overtaking prompt and psychological intervention device of the present invention.

FIG. 2 is a structural block diagram of an expressway overtaking prompting and psychological intervention device according to the present invention.

Fig. 3 is the working flow chart of the intervention unit of the present invention.

FIG. 4 is a simulation diagram of an overtaking scenario of the present invention.

FIG. 5 is a schematic diagram of the scanning range of the laser radar according to the present invention.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

Refer to the schematic diagram of the structure of a system of a highway overtaking prompt and psychological intervention device shown in FIG. 1 of the specification, including a speed acquisition module, a distance acquisition module, a central processing module and an intervention module; wherein,

In this embodiment, the central processing module is the core of the entire system, and can achieve data acquisition, comprehensive analysis and calculation of data, and issue early warning commands in a very short period of time. The information transmission unit III is also connected, the information transmission unit III receives the speed information and distance information from the information transmission unit II, and the intervention module completes the pre-overtaking state judgment by judging the speed information and the distance information.

The central processing module is mainly a data calculation unit, using the MCS-51 single-chip microcomputer as the processor, which is a 8-bit single-chip microcomputer with a relatively wide application and a relatively simple design. The data computing unit uses the IO interface to receive information, conduct comprehensive analysis to determine which overtaking state the vehicle belongs to, and the center sends an early warning command to the intervention module for early warning.

The speed acquisition module includes a speed acquisition unit and an information transmission unit I. The speed acquisition module uses the Hall element as the wheel speed sensor, and uses the magnetic induction intensity as the input signal. The magnetic induction intensity changes with the wheel speed to generate the Hall potential pulse, which is inherited by the Hall. After the amplification, shaping and power amplification inside the circuit, the pulse sequence is output to the outside to complete the speed acquisition and transmission.

The distance acquisition module includes a radar ranging unit and an information transmission unit II. The radar ranging unit measures the distance between the vehicle and the preceding vehicle in the same lane through the radar, and provides the measured signal to the information transmission unit II. The information transmission unit II obtains from the radar measurement. The distance information is transmitted to the information transmission unit III through wireless transmission.

The device installs a high-precision lidar in front of the vehicle. The lidar measures a long distance and has a fast scanning speed, which can well detect moving targets.

In this embodiment, the laser radar installed in front of car A emits a laser from the inside, and the receiving feedback position is the front bumper of car B. When the laser encounters the front bumper of the vehicle, it returns and receives, and then according to the difference between the two The receiving time difference is used to determine the distance between the vehicle and the vehicle ahead.

The information transmission module III transmits and stores the information to the remote intelligent transportation cloud platform in the mode of digital signal. The platform will record the data of each driving process, and then calculate the appropriate driving speed and overtaking on the expressway through big data analysis. speed. The smart transportation cloud platform is an app application. It has the ability to build a real-time dynamic information service system, deeply mine transportation-related data, form a problem analysis model, and realize industry resource allocation optimization capabilities, public decision-making capabilities, industry management capabilities, and public service capabilities. Improve, promote the operation and development of transportation that is safer, more efficient, more convenient, more economical, more environmentally friendly, and more comfortable, and drive the transformation and upgrading of transportation-related industries. Through its real-time acquisition of speed, distance and other relevant information, it can provide strong evidence for illegal acts, so that relevant managers can determine their responsibilities in accordance with traffic laws, regulations and regulations, and shorten the time to solve problems such as traffic accidents.

Refer to Figure 3 in the description for the work flow chart of the intervention unit,

The intervention unit is an important part of the expressway overtaking prompt and psychological intervention device, and it is the output part of the device. It is mainly composed of two parts, one is the LED warning light, and the other is the voice prompter. The intervention unit will judge the overtaking safe state and the overtaking danger state of the A car. The judgment criteria are as follows:

The data is observed through the on-board camera, and then transmitted to the central processing unit for comparison with the actual vehicle speed. If the speed of the vehicle in the driving lane exceeds 100 kilometers per hour, and the distance from the vehicle in front of the same lane is more than 100 meters, it is overtaking. In the safe state, the overtaking safety green light is on, and the vehicle in the overtaking lane is reminded that the vehicle in the driving lane is ready to overtake, and drive cautiously; for the overtaking vehicle, it is prompted to overtake safely and drive carefully. When driving a vehicle on the expressway, do not exceed the speed indicated on the traffic sign. If it exceeds the speed indicated by the traffic sign, and the speed of the vehicle in the driving lane is lower than 100 kilometers per hour, and the minimum distance to the vehicle ahead in the same lane is less If it is less than 50 meters, it is in a dangerous state of overtaking, and the overtaking danger red light is on. For the overtaking vehicle, the owner is advised to give up overtaking and wait for the opportunity; based on the wireless communication, the speed of the vehicle in the overtaking lane is obtained in real time. If it is lower than the specified speed, the vehicle will be prompted to accelerate drive.

In this embodiment, the in-vehicle camera can detect the information on the roadside traffic signs, and then transmit the information to the central processing unit, compare it with the actual vehicle speed, and judge the overtaking state.

Referring to the accompanying drawing 4 of the description, the overtaking scenario simulation diagram of the present invention,

Suppose two cars on the up-going lane and the overtaking lane of the expressway: vehicle A and vehicle B, the two vehicles are S meters apart at a certain moment, and V _A and V _B are the speeds of A and B, respectively. When the car A system is working, first the speed sensor unit and the radar ranging unit of car A measure the speed and distance information of car _{A, and transmit the measured information to the information transmission part IA and the information transmission part II A through} the interface respectively, At this time, the information transmission part analyzes the information measured by the sensor to obtain the speed and distance of vehicle A; then the information transmission part I _A , the information transmission part II _A and the information transmission part III _A form a wireless network, and the communication is realized through the formed wireless network. The speed and distance obtained by the analysis are sent to the information transmission part III _A , stored in the chip, and updated continuously.

The system of car B works the same as car A, but only gets the speed of car B, which is stored in the chip and continuously updated. When the distance between vehicles A and B is close enough to enable wireless communication, the information transmission part III _A communicates with the information transmission part III _B to exchange the speed information and distance information of the two vehicles A and B, which are stored in the chip and updated continuously. . The intervening part of the two vehicles A and B reads the speed of the vehicle in the chip and the speed of the other vehicle exchanged through wireless communication, and then makes a judgment. After the judgment, when the vehicle A can safely overtake at this time, it will prompt Vehicle A overtakes safely, drives carefully, and reminds vehicle B that vehicle A is ready to overtake and drives cautiously; if vehicle A cannot complete overtaking at this time after judgment, give vehicle A a warning of overtaking danger and psychological intervention, prompting to give up overtaking and wait for the opportunity , based on the speed of car B obtained in real time, if the speed of car B is lower than the specified value, it will prompt to accelerate.

This embodiment also provides another overtaking prompting and psychological intervention method based on a wireless communication-based expressway overtaking prompting and psychological intervention device, including the following steps:

Step 1: Obtain the current speed of car A and the distance information between car A and the vehicle in front of the same lane.

Step 2, receiving the speed information and the distance information, and judging the pre-overtaking state according to the speed information and the distance information, and obtaining a judgment result;

Step 3, according to the judgment result, give an early warning and intervention prompt.

In one embodiment, when the distance between car A and car B is close enough to enable wireless communication, wireless information interaction is carried out at the same time, and the interactive content includes the speed information of car A and car B and the distance between cars A and B. According to the current speed information of car A, the distance information between cars A and B, and the speed information of car B, the pre-overtaking state of car A is judged.

The various embodiments in the specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments, and the same and similar parts between the various embodiments can be referred to each other. As for the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant part can be referred to the description of the method.

The above description of the disclosed embodiments enables any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (10)

1. an expressway overtaking prompt and a psychological intervention device, characterized in that, being installed on a car A, comprising a speed acquisition module, a distance acquisition module, a central processing module and an intervention module; wherein, The speed acquisition module is used to measure the speed of the current car A and transmit the measured speed information to the central processing module; The distance acquisition module is used to measure the distance information between the vehicle and the preceding vehicle in the same lane and transmit the measured distance information to the central processing module; The central processing module performs pre-overtaking state judgment on the received speed information and distance information, obtains the judgment result, and sends the judgment result to the intervention module for early warning and intervention prompt. 2 . The device for prompting overtaking and psychological intervention on an expressway according to claim 1 , wherein the central processing module is further connected to the information transmission unit III. 3 . 3 . The device for prompting and psychological intervention on expressway according to claim 2 , wherein the speed acquisition module comprises a speed sensor unit and an information transmission unit I; wherein, The speed acquisition module measures the speed information of the current car A through the speed sensor, and sends the speed information to the information transmission unit I; The information transmission unit I transmits the speed information measured by the speed sensor unit to the information transmission unit III through wireless transmission, and the information transmission unit III receives the speed information and distance information from the speed acquisition module and the distance acquisition module. . 4 . The device for prompting overtaking and psychological intervention on an expressway according to claim 2 , wherein the distance acquisition module comprises a radar ranging unit and an information transmission unit II; wherein, The distance acquisition module measures the distance between the current vehicle A and the preceding vehicle in the same lane through radar, and provides the measured distance information to the information transmission unit II; The information transmission unit II transmits the distance information obtained by the radar measurement to the information transmission unit III through wireless transmission. 5 . The expressway overtaking prompt and psychological intervention device according to claim 1 , wherein the intervention module comprises an acousto-optic alarm device, and the acousto-optic alarm device executes different pre-overtaking state judgment results respectively according to different pre-overtaking state judgment results. 6 . Prompt action. 6 . The expressway overtaking prompt and psychological intervention device according to claim 2 , wherein the information transmission unit III of car A and the information transmission unit III of car B perform wireless interaction, and the interactive content includes: 7 . The speed information and distance information of car A and car B. 7. A kind of overtaking prompting and psychological intervention method of a kind of expressway overtaking prompting and psychological intervention device according to any one of claims 1-6, is characterized in that comprising the following steps: Step 1: Obtain the current speed of car A and the distance information between car A and the vehicle in front of the same lane; Step 2, receiving the speed information and the distance information, and judging the pre-overtaking state according to the speed information and the distance information, and obtaining a judgment result; Step 3, according to the judgment result, give an early warning and intervention prompt. 8. The overtaking prompt and psychological intervention method according to claim 7, characterized in that, before the step 1, it also includes a system opening and closing control condition: Turn-on conditions: turn on when the left turn signal is turned on, and the device starts to work; Closing conditions: After overtaking is completed, the left turn signal is turned off, and the device is turned off. 9. The method for overtaking prompting and psychological intervention according to claim 7, wherein the step 2 further comprises: wirelessly interacting with car B, and the interactive content includes the speed information and distance information of car A and car B , according to the current speed information of car A and the distance information between cars A and B, as well as the speed information and distance information of car B, to judge the pre-overtaking state of car A. 10 . The method for overtaking prompting and psychological intervention according to claim 9 , wherein the information exchange step has trigger conditions, including: when the distance between car A and workshop B reaches the range of information exchange, the speed of the two cars is exchanged. 11 . information and distance information.

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