CN205365591U - Driver's state suggestion device based on vehicle motion gesture - Google Patents

Abstract

The utility model discloses a driver state prompting device based on vehicle motion posture, which belongs to the technical field of automobile active safety, and comprises a casing, an adsorption base, a vehicle posture sensor, a single-chip microcomputer control system, a battery and a charging system, a loudspeaker and an indicator light. Wherein the vehicle attitude sensor is connected with the input end of the single-chip microcomputer control system, and the loudspeaker and the indicator light are connected with the output end of the single-chip microcomputer control system. The vehicle attitude sensor transmits the acquired vehicle acceleration and angular velocity data to the single-chip microcomputer control system. The single-chip microcomputer control system analyzes and calculates the data to estimate the driver's state, compares the analyzed data with the preset threshold, and obtains the driver's dangerous operation state and In the dangerous state, the driver is reminded in real time to pay attention to the driving and manipulation behavior through the speaker and the indicator light, so as to improve the driver's safety awareness and avoid traffic accidents. The device of the utility model has the advantages of simple structure, strong practicability, low price and easy popularization.

Description

A driver status prompting device based on vehicle motion posture

technical field

The utility model relates to the technical field of automobile active safety, in particular to a driver state prompting device based on vehicle motion posture.

Background technique

With the continuous growth of car ownership, road traffic accidents occur frequently. In the road traffic system composed of people-vehicle-environment, traffic accidents caused by drivers account for more than half of the accidents, most of which are caused by improper driving states such as driver fatigue, distraction and aggressiveness. At present, some of the existing driving safety reminder devices analyze the driving state of the driver within a preset time, such as analyzing and prompting fatigue state, aggressive state, slack state, etc., and some analyze the real-time state of the driver, such as speeding state, etc.; It is not possible to analyze both the real-time state of the driver, such as steering and excessive braking, and the driving state of the driver within a preset time, such as relaxed state, aggressive state, etc. In addition, some driving safety reminder devices have complex structures and high costs.

Contents of the invention

The technical problem to be solved by the utility model is to provide a driver state prompting device based on the vehicle motion posture in view of the above-mentioned deficiencies in the prior art. The device has no complicated structural equipment and is simple in structure. It can not only judge the real-time driving state of the driver in real time, but also judge the driving state within the preset time, and realize the real-time reminder of vision and hearing at the same time, improving the driver's safety. Safety awareness, avoiding traffic accidents, strong practicability, easy to popularize and use.

In order to achieve the above purpose, the utility model provides a driver status prompt device based on the vehicle motion posture, which is composed of a housing, an adsorption base, a battery and a charging system, a vehicle posture sensor, a single-chip microcomputer control system, a speaker and an indicator light. The vehicle attitude sensor is connected to the input end of the single-chip microcomputer control system, and the speaker and the indicator light are connected to the output end of the single-chip microcomputer control system.

In order to achieve the above purpose, the utility model provides a driver status prompt method based on vehicle motion attitude, the program includes the following three main functional modules:

Information collection module: collect the acceleration and angular velocity information of the vehicle controlled by the driver;

Analysis and calculation module: analyze the acceleration and angular velocity of the vehicle and their changes, and obtain the behavior status of the current driver driving the vehicle;

Prompt module: through speakers and indicator lights, the driver can be prompted in real time by auditory and visual means.

Specifically, the acceleration and angular velocity information of the collected vehicle includes: vertical acceleration, roll angular velocity, pitch angular velocity, yaw angular velocity, lateral acceleration and longitudinal acceleration.

Further, analyze the acceleration and angular velocity of the vehicle and their changes, and compare them with the set thresholds to judge the behavior state of the current driver driving the vehicle. The set thresholds are:

According to the degree of bumpiness of the vehicle, if driving on a general road, set the bump (comfort) threshold with vertical acceleration as the main indicator; if driving on some special roads, such as rough mountain roads, you can increase the roll angular velocity and pitch angular velocity for weighted synthesis evaluation;

According to the centrifugal force or tail flick, if you are driving on a normal road, set the oversteer threshold with the yaw rate as the main indicator. If you are on some special roads, such as ice and snow roads, you can increase the lateral acceleration for weighted comprehensive evaluation;

According to the rapidity of acceleration and braking, the acceleration threshold is set with the maximum value of the longitudinal acceleration (positive value), and the braking threshold is set according to the minimum value of the longitudinal acceleration (negative value, which is actually the largest absolute value);

The aggressive threshold and the slack threshold are set according to the rate of change of the longitudinal acceleration and the rate of change of the yaw rate within a preset time.

Among them, the behavior state of the current driver driving the vehicle is divided into:

If the vertical acceleration of the vehicle on general roads, or the weighted comprehensive evaluation results of the vertical acceleration, roll angular velocity, and pitch angular velocity of the vehicle on special roads exceeds the turbulence threshold, it is judged to be in a turbulent state;

If the vehicle yaw rate in general road driving, or the weighted comprehensive evaluation result of vehicle yaw rate and lateral acceleration in special road driving exceeds the oversteer threshold, it is judged as an oversteer state;

If the maximum value of the longitudinal acceleration of the vehicle exceeds the over-acceleration threshold, it is judged as an over-acceleration state, and if the negative value of the longitudinal acceleration is less than the over-acceleration threshold, it is judged as an over-acceleration state;

Within the preset time: if the vehicle’s longitudinal acceleration rate of change or yaw rate of change is greater than the aggressive threshold, it is judged to be in an aggressive state; the vehicle’s longitudinal acceleration rate of change and yaw rate of change are between the aggressive threshold and the slack threshold If the rate of change of the longitudinal acceleration and the rate of change of the yaw rate of the vehicle is less than the relaxation threshold, it is judged as the sluggish state.

Wherein, according to the driver's daily driving habit record, it assists in determining the current driver's state.

Specifically, the speaker car prompts include:

When it is judged to be in a bumpy state, it prompts: the bumps are severe, please slow down;

When it is judged that the steering is too sharp, it prompts: the steering is too sharp, please drive steadily;

When it is judged that the acceleration is too fast, it will prompt: the acceleration is too fast, please slow down;

When it is judged that the brake is too fast, it will prompt: the brake is too fast, please drive carefully;

When it is judged as an aggressive state, it prompts: Be safe and don’t be impatient, please drive carefully;

When it is judged to be sluggish, prompt: Concentrate and drive safely.

Among them, the reminders of aggressive and slow states set the reminder interval time according to the predetermined time, so as to avoid frequent reminders from causing certain interference to the driver.

Specifically, the on-board prompts of the indicator light include:

When it is judged that the vehicle is in any state of bumping, over-steering, over-acceleration, or over-braking, the indicator light will flash;

When it is judged that the driver is in an aggressive state, the indicator light will display red;

When it is judged that the driver is in a slow state, the indicator light will show yellow;

When it is judged that the driver is in a normal state, the indicator light turns blue.

The above-mentioned vehicle attitude sensor (4) collects vehicle acceleration and angular velocity motion data, and the vehicle attitude sensor (4) transmits the acquired vehicle acceleration and angular velocity data to the single-chip microcomputer control system (5) in real time in the form of signals; The single-chip microcomputer control system (5) is used to process the vehicle motion change information detected by the vehicle attitude sensor (4), and then transmit the analysis and processing results to the speaker (6) and indicator light (7) in the form of signals, and can store and Export internal data.

Compared with the prior art, the driver's state prompting device can use the vehicle's movement posture changes to reverse the driver's control state, remind the driver to pay attention to his own driving state in real time, improve the driver's driving safety awareness, and avoid traffic accidents happened.

The device and method of the utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

Description of drawings

Fig. 1 is a schematic diagram of the device structure of the present utility model.

Fig. 2 is a schematic diagram of vehicle motion state parameters collected by the device of the present invention.

Fig. 3 is a flow chart of working steps of the utility model device.

Explanation of reference signs:

1-housing; 2-adsorption base; 3-battery and charging system; 4-vehicle attitude sensor; 5-single-chip control system; 6-speaker; 7-indicator.

C1-vertical acceleration; C2-roll rate; C3-pitch rate; C4-yaw rate; C5-lateral acceleration; C6-longitudinal acceleration.

S1-S4 in the figure represent the steps of the working flow chart of the device.

detailed description

As shown in Figure 1, the utility model device includes a shell (1), an adsorption base (2), a battery and a charging system (3), a vehicle attitude sensor (4), a single-chip microcomputer control system (5), a speaker (6) and indicator light (7).

During the driving process of the vehicle, the driver controls the vehicle's motion posture through operations such as accelerator, brake, and steering, so the vehicle motion posture change information measured by the vehicle posture sensor (4) can reflect the driver's manipulation state. Among them, the vehicle attitude sensor (4) measures the acceleration signal and the angular velocity signal of the vehicle during the movement of the vehicle, so as to obtain the basic data of the movement attitude of the vehicle.

As shown in Figure 2, the vehicle acceleration and angular velocity motion data collected by the vehicle attitude sensor (4) of the utility model device include: vertical acceleration (C1), roll angular velocity (C2), pitch angular velocity (C3), yaw angular velocity (C4), lateral acceleration (C5) and longitudinal acceleration (C6), and the vehicle attitude sensor (4) transmits the acquired vehicle acceleration and angular velocity data in the form of signals to the single-chip control system (5) in real time.

The above-mentioned single-chip microcomputer control system (5) is used to process the vehicle motion change information detected by the vehicle attitude sensor (4), and then transmit the analysis and processing results to the speaker (6) and indicator light (7) in the form of signals, and can Store and export internal data, record the driver's daily driving habits and store them in the database. The driver can modify the corresponding threshold according to his own driving characteristics so as to play the role of the device more reasonably.

Please refer to Fig. 3, which is a flow chart of the work steps of the utility model device, thus it can be known that the concrete workflow of the utility model device comprises:

Step S1: Fix the driver status reminder device based on the vehicle's motion posture in the middle of the dashboard, turn on the power of the device, and the driver status of the device is automatically set to the normal state when starting, that is, the color of the indicator light (7) is blue, Then start the vehicle to run;

Step S2: The vehicle attitude sensor (4) collects the vehicle's vertical acceleration (C1), roll angular velocity (C2), pitch angular velocity (C3), yaw angular velocity (C4), lateral acceleration (C5) and longitudinal acceleration information (C6 );

Step S3: The vehicle attitude sensor (4) transmits the acquired vehicle acceleration and angular velocity data to the single-chip microcomputer control system (5), and the single-chip microcomputer control system (5) analyzes the acceleration and angular velocity of the vehicle and their changes, compares them with the threshold, and reverses them Pilot's handling status, including:

The vehicle vertical acceleration (C1) in general road driving, or the weighted comprehensive evaluation results of vehicle vertical acceleration (C1) and roll angular velocity (C2) and pitch angular velocity (C3) in special road driving, if it exceeds the bump threshold, it is judged as a bumpy state;

If the vehicle yaw rate (C4) in general road driving, or the weighted comprehensive evaluation result of vehicle yaw rate (C4) and lateral acceleration (C5) in special road driving exceeds the oversteer threshold, it will be judged as over-steering state;

If the maximum value of the longitudinal acceleration (C6) of the vehicle exceeds the over-acceleration threshold, it is judged as a state of rapid acceleration, and if the negative value of the longitudinal acceleration (C6) is less than the threshold of rapid braking, it is judged as a state of rapid braking ;

Within the preset time: the rate of change of the longitudinal acceleration (C6) or the rate of change of the yaw rate (C4) of the vehicle is greater than the aggressive threshold, and it is judged as an aggressive state; the rate of change of the longitudinal acceleration (C6) of the vehicle and the rate of yaw If the rate of change of the angular velocity (C4) is between the aggressive threshold and the slack threshold, it is judged as a normal state; when the rate of change of the vehicle’s longitudinal acceleration (C6) and yaw rate (C4) are less than the slack threshold, it is judged as a dull state.

Wherein, according to the driver's daily driving habit record, it assists in determining the current driver's state.

Among them, the sluggish state means that the driver’s manipulation of the accelerator, brake, and steering has little or no manipulation within the preset time, indicating that the driver may be in a state of fatigue driving, drunk driving, or drowsiness. If the driver is not reminded to correct it in time, if When the vehicle in front suddenly changes its driving route, pedestrians cross the road, or the road turns, it is easy to cause traffic accidents.

Among them, the aggressive state means that the driver's manipulation changes too quickly within the preset time, such as frequently turning the steering wheel to the left or right alternately, slamming on the accelerator and slamming on the brake alternately, etc., indicating that the driver may be in emotional agitation, rage, etc. state, if it is not reminded and corrected in time, it will easily cause traffic accidents.

Step S4: The single-chip control system (5) transmits the judged behavioral state information of the driver driving the vehicle to the speaker (6) connected to the end in the form of a signal, and prompts the driver in real time in the form of hearing:

When it is judged to be in a bumpy state, it prompts: the bumps are severe, please slow down;

When it is judged that the steering is too sharp, it prompts: the steering is too sharp, please drive steadily;

When it is judged that the acceleration is too fast, it will prompt: the acceleration is too fast, please slow down;

When it is judged that the brake is too fast, it will prompt: the brake is too fast, please drive carefully;

When it is judged as an aggressive state, it prompts: Be safe and don’t be impatient, please drive carefully;

When it is judged to be sluggish, prompt: Concentrate and drive safely.

Among them, the reminders of aggressive and slow states set the reminder interval time according to the predetermined time, so as to avoid frequent reminders from causing certain interference to the driver.

At the same time, the single-chip control system (5) transmits the information of the driver’s behavior state of the vehicle to the indicator light (7) connected to the end in the form of a signal, and visually prompts the driver in real time:

When it is judged that the vehicle is in any state of bumping, over-steering, over-acceleration, or over-braking, the indicator light (7) will flash;

When it is judged that the driver is in an aggressive state, the indicator light (7) will display red;

When it is judged that the driver is in a slow state, the indicator light (7) will display yellow;

When judging that the driver is in a normal state, the indicator light (7) shows blue.

The above are only preferred embodiments of the present utility model, and are not intended to limit the present utility model. Any simple modifications, changes and equivalent structural changes made to the above embodiments according to the technical essence of the present utility model still belong to the present utility model. Within the scope of protection of the new device.

Claims (1)

1. the driver status suggestion device based on moving attitude of vehicle, including shell (1), adsorption-type base (2), battery and charging system (3), vehicle attitude sensor (4), single-chip computer control system (5), speaker (6) and display lamp (7), it is characterized in that, described vehicle attitude sensor (4) connects the input of single-chip computer control system (5), described speaker (6) and display lamp (7) and connects the outfan of single-chip computer control system (5)；Wherein, described vehicle attitude sensor (4) collection vehicle acceleration and angular velocity exercise data, and vehicle attitude sensor (4) is by the vehicle acceleration obtained and angular velocity data in the form of a signal, real-time transmission is to single-chip computer control system (5)；Described single-chip computer control system (5) is used for the vehicle movement change information processed detected by vehicle attitude sensor (4), then analysis processing result is passed in the form of a signal speaker (6) and display lamp (7), and can store and derive internal data.