CN112550145A

CN112550145A - Engineering vehicle fatigue driving intervention system

Info

Publication number: CN112550145A
Application number: CN202011335414.1A
Authority: CN
Inventors: 李作舟; 崔锴; 王亚军; 李欣
Original assignee: Shaanxi Zhen'an Pumped Storage Co ltd; State Grid Corp of China SGCC; State Grid Xinyuan Co Ltd
Current assignee: Shaanxi Zhen'an Pumped Storage Co ltd; State Grid Corp of China SGCC; State Grid Xinyuan Co Ltd
Priority date: 2020-11-25
Filing date: 2020-11-25
Publication date: 2021-03-26

Abstract

The invention discloses a fatigue driving intervention system for an engineering vehicle, which comprises a data acquisition module, an ECU data processing module, an ECU control module, a power supply module, an alarm module, an automatic early warning device, a vibration intervention motor and an automatic brake module. The method can better eliminate the influence of individual difference of the driver on the detection and identification of the fatigue driving, and has higher accuracy and better accuracy. In addition, according to different fatigue driving degrees, the automatic early warning device and the vibration intervention motor can respectively carry out voice reminding and vibration intervention at different levels, and the reminding and the intervention are stopped when the fatigue driving state is relieved; when the staying time of the fatigue driver at the same steering angle is too long, the automatic brake module can be directly started, so that the potential safety hazard caused by fatigue driving is reduced.

Description

Engineering vehicle fatigue driving intervention system

Technical Field

The invention belongs to the technical field of fatigue driving early warning intervention, and particularly relates to a fatigue driving intervention system for an engineering vehicle.

Background

On a large construction site, the utilization rate of engineering vehicles is extremely high, most of projects need to be constructed at night, and fatigue driving of drivers becomes one of important reasons for occurrence of a plurality of accidents. At present, various fatigue early warning devices have been developed at home and abroad, the fatigue state detection is mainly completed through physiological detection, face recognition and wearing of an induction bracelet or a helmet, the accuracy and precision are not high, and the use and wearing are inconvenient. Most fatigue early warning equipment can only realize reminding the effect, and at the job site, the noise is huge, and general warning does not have effect at all to the driver, can not intervene fatigue driver, can cause the emergence of accident equally.

Disclosure of Invention

The invention aims to provide a fatigue driving intervention system for a construction vehicle, which solves the problems.

In order to achieve the purpose, the invention adopts the following technical scheme:

a fatigue driving intervention system of an engineering vehicle comprises a data acquisition module, an ECU data processing module, an ECU control module, a power supply module, an alarm module, an automatic early warning device, a vibration intervention motor, an automatic brake module, a switch and a display; the data acquisition module, the ECU data processing module and the ECU control module form an Electronic Control Unit (ECU); the input port of the data acquisition module is connected with a steering wheel grip strength sensor, a touch sensor, a horn key sensor, a speed sensor, a three-axis acceleration sensor, a heart rate sensor, a sound sensor, a distance measurement sensor, a vehicle data recorder and a GPS, and the output end of the data acquisition module is connected with the input end of an ECU data processing module; the ECU data processing module carries out fatigue identification and judgment and sends a signal to the ECU control module, and the ECU control module is connected with an automatic early warning device, a vibration intervention motor and an automatic braking module; the alarm module is connected with the ECU control module, the display and the switch and used for diagnosing the faults of the ECU, transmitting fault codes to the display and starting the switch; the power module is connected with the alarm module and the electronic control unit ECU.

Furthermore, a steering wheel grip sensor is arranged on the surface of the steering wheel and used for detecting the grip condition of a driver; the touch sensor is arranged on the surface of the steering wheel and is used for detecting the time that the driver disengages from the steering wheel once and the times of disengaging from the steering wheel per unit time; the horn key sensor is arranged at the horn key and used for detecting the key pressing times in unit time; the speed sensor is arranged on an accelerator pedal and used for detecting the instantaneous speed of the vehicle during running; the three-axis acceleration sensor is arranged at the center of the vehicle body and used for detecting the instantaneous lateral acceleration and the instantaneous longitudinal acceleration of the vehicle; the heart rate sensor is arranged below the driver seat and used for detecting the heart rate condition of the driver; the sound sensor is arranged below the driver seat and used for detecting the tone of the driver; the distance measuring sensor is arranged on a front bumper of the vehicle and used for detecting the distance between the vehicle and the vehicle in front; the automobile data recorder and the GPS are arranged at the front windshield and used for detecting the distance of the vehicle deviating from the lane.

Further, the ECU data processing module is composed of a comparator and a data memory of the ECU.

Further, the automatic early warning device comprises a primary voice prompt and a secondary voice prompt.

Further, a vibration intervention motor is installed below the driving seat, and comprises primary vibration intervention and secondary vibration intervention.

Further, the alarm module comprises an alarm, a fault code storage library and a trigger circuit.

Furthermore, the switch is connected with a trigger circuit of the alarm module, and the switch is installed at the driving seat.

Furthermore, the data acquisition module is connected with a corner timer to realize a timing function.

Furthermore, a relay is arranged between the ECU control module and the automatic early warning device, and a time delay relay is arranged between the ECU control module and the vibration intervention motor.

Further, an intervention method of the engineering vehicle fatigue driving intervention system comprises the following steps:

step 1, a data acquisition module extracts behavior characteristic parameters of a driver, transmits the acquired data to an ECU data processing module for comparison calculation with the behavior characteristics detected in real time, and transmits the calculation result to a control module, and the control module outputs corresponding control signals after comprehensive processing according to the received signals and is used for controlling an automatic early warning device, a vibration intervention motor and an automatic braking module;

step 2, the automatic early warning device reads the pre-stored voice in the SD card, and the voice information is different according to different grades; the vibration intervention motor enables the driving seat to start to vibrate, and the vibration intensity is different according to different grades;

and 3, connecting the corner timer with the data acquisition module, and starting the automatic braking module to protect the driver in time when the driver in the fatigue state stays for too long time at a steering angle and exceeds the time threshold value of the corner timer.

Compared with the prior art, the invention has the following technical effects:

the invention extracts the individual parameters of the behavior indexes of the driver through the data acquisition module, thereby effectively solving the influence of individual difference on detection; the invention grades the fatigue driving state, carries out primary and secondary voice prompt and vibration intervention aiming at the fatigue states of different levels, and has obvious intervention effect.

The invention monitors the turning state of the driver in a fatigue state, and when the same turning angle is too long in retention time, the automatic brake module is started in time to protect the driving safety of the driver.

The invention can detect the driving behavior of the driver in real time, and can transmit the detection data in time, and the error is small.

The device is novel and unique, has strong practicability and high accuracy, improves the driving safety and reduces the occurrence of accidents.

Drawings

FIG. 1 is a schematic diagram of the structure of the device of the present invention.

FIG. 2 is a flow chart of the alarm module operation.

FIG. 3 is a flow chart of the overall operation of the apparatus of the present invention.

In the figure, 1 is a steering wheel grip sensor; 2 is a steering wheel angle sensor; 3 is a touch sensor; 4 is a horn key sensor; 5 is a speed sensor; 6 is a three-axis acceleration sensor; 7 is a heart rate sensor; 8 is a sound sensor; 9 is a distance measuring sensor; 10 is a vehicle event data recorder; 11 is a data acquisition module; 12 is a corner timer; 13 is an alarm module; 14 is a power supply module; 15 is ECU data processing module; 16 is an automatic brake module; 17 is a display; 18 is an ECU control module; 19 is a switch; 20 is an early warning relay; 21 is a vibration delay relay; 22 is an automatic early warning device; and 23, a vibration interference motor.

Detailed Description

The invention is further described below with reference to the accompanying drawings:

referring to fig. 1-3, a fatigue driving intervention system for an engineering vehicle includes a data acquisition module 11, an ECU data processing module 15, an ECU control module 18, a power supply module 14, an alarm module 13, an automatic early warning device 22, a vibration intervention motor 23, an automatic brake module 16, a switch 19, and a display 17; the data acquisition module 11, the ECU data processing module 15 and the ECU control module 18 form an Electronic Control Unit (ECU); an input port of the data acquisition module is connected with a steering wheel grip strength sensor 1, a steering wheel corner sensor 2, a touch sensor 3, a horn key sensor 4, a speed sensor 5, a three-axis acceleration sensor 6, a heart rate sensor 7, a sound sensor 8, a distance measuring sensor 9, a vehicle data recorder 10 and a GPS, and an output end of the data acquisition module 11 is connected with an input end of an ECU data processing module 15; the ECU data processing module 15 carries out fatigue identification and judgment and sends a signal to the ECU control module 18, and the ECU control module 18 is connected with an automatic early warning device 22, a vibration intervention motor 23 and an automatic braking module 16; the alarm module 13 is connected with the ECU control module 18, the display 17 and the switch 19, and is used for diagnosing the faults of the ECU, transmitting fault codes to the display and starting the switch 19; the power supply module 14 is connected with the alarm module 13 and the electronic control unit ECU.

The steering wheel grip sensor 1 is arranged on the surface of the steering wheel and used for detecting the grip condition of a driver; the steering wheel angle sensor 2 is arranged on the steering shaft and used for detecting the steering wheel angle and the rotating speed; the touch sensor 3 is arranged on the surface of the steering wheel and is used for detecting the time that the driver is disengaged from the steering wheel once and the times of disengaging from the steering wheel per unit time; the horn key sensor 4 is arranged at the horn key and used for detecting the number of keys pressed in unit time; the speed sensor 5 is arranged on an accelerator pedal and used for detecting the instantaneous speed of the vehicle during running; the three-axis acceleration sensor 6 is arranged at the center of the vehicle body and used for detecting the instantaneous lateral acceleration and the instantaneous longitudinal acceleration of the vehicle; the heart rate sensor 7 is arranged below the driver seat and used for detecting the heart rate condition of the driver; the sound sensor 8 is arranged below the driver seat and used for detecting the tone of the driver; the distance measuring sensor 9 is arranged on a front bumper of the vehicle and is used for detecting the distance between the vehicle and the vehicle in front; the drive recorder 10 and the GPS are mounted at the front windshield for detecting the lane departure distance of the vehicle.

The ECU data processing module 15 is composed of a comparator and a data memory of the ECU.

The automatic siren 22 includes primary and secondary voice prompts.

The vibration intervention motor 23 is mounted under the driver's seat and includes primary and secondary vibration interventions.

The alarm module 13 includes an alarm, a fault code storage, and a trigger circuit.

The switch 19 is connected with a trigger circuit of the alarm module 13, and the switch 19 is installed at the driving seat.

The data acquisition module 11 is connected with a corner timer 12 to realize the timing function.

A relay 20 is arranged between the ECU control module 18 and an automatic early warning device 22, and a time delay relay 21 is arranged between the ECU control module 18 and a vibration intervention motor 23.

The working process of the invention is as follows:

the working process is as follows: the data acquisition module can extract the behavior characteristic parameters of the driver, detect the behavior difference and store the data in the ECU memory, thereby reducing the influence of the individual difference of the driver on the detection. The module can detect the behavior characteristics of a driver in a set time under the normal driving condition and transmit the detected data to the ECU data processing module, the ECU data processing module is composed of a comparator, a data memory and the like of the ECU, and is a calculation storage module inherent to the ECU and used for carrying out comparison calculation with the behavior characteristics detected in real time and transmitting the calculation result to the control module. The control module is an inherent controller of the ECU, and the controller outputs corresponding control signals after comprehensive processing according to received signals and is used for controlling the automatic early warning device, the vibration intervention motor and the automatic braking module.

Specifically, the automatic early warning device comprises a primary voice prompt and a secondary voice prompt, and the early warning device can read the pre-stored voice in the SD card by using an MP3 early warning module and has different voice information according to different levels. The vibration intervention motor comprises a primary vibration intervention motor and a secondary vibration intervention motor, wherein the vibration motors are arranged on the driving seat, and the vibration intensities are different according to different grades. After the ECU controller outputs a control signal, the early warning relay and the vibration delay relay are started at the same time, a time threshold value is set in advance for the vibration delay relay, and the time is set according to the voice reminding time, so that the vibration intervention motor can be started after the voice reminding is finished, and the intervention function is realized. A manual main switch is arranged at the position of the automatic early warning device and the vibration intervention motor, the switch is arranged at the position of a driving seat, and when the early warning intervention device breaks down, the device can be manually closed.

The corner timer is connected with the data acquisition module, and if the staying time of a driver in a fatigue state at a steering angle is too long and exceeds the time threshold value of the corner timer (one angle signal is controlled within 25 s), the automatic brake module can be directly started to timely protect the driver.

The alarm module comprises an alarm, a fault code storage library, a trigger circuit and the like; when the ECU breaks down, the ECU sends a fault code to the display so as to be maintained, meanwhile, the trigger circuit works, and the alarm also sends out buzzing sound to remind a driver of failure of the fatigue early warning intervention function. The switch is connected with a trigger circuit of the alarm module, and when the fatigue early warning intervention function fails, the early warning and intervention device can be turned off through the switch.

The above description is a preferred embodiment of the present invention, but the present invention is not limited to the above embodiment, and modifications in form are within the scope of the present invention as long as they do not depart from the spirit and scope of the present invention.

Claims

1. The engineering vehicle fatigue driving intervention system is characterized by comprising a data acquisition module (11), an ECU data processing module (15), an ECU control module (18), a power supply module (14), an alarm module (13), an automatic early warning device (22), a vibration intervention motor (23), an automatic brake module (16), a switch (19) and a display (17); the data acquisition module (11), the ECU data processing module (15) and the ECU control module (18) form an Electronic Control Unit (ECU); an input port of the data acquisition module is connected with a steering wheel grip strength sensor (1), a touch sensor (3), a horn key sensor (4), a speed sensor (5), a three-axis acceleration sensor (6), a heart rate sensor (7), a sound sensor (8), a distance measuring sensor (9), a vehicle traveling recorder (10) and a GPS, and an output end of the data acquisition module (11) is connected with an input end of an ECU data processing module (15); the ECU data processing module (15) performs fatigue identification and judgment and sends signals to the ECU control module (18), and the ECU control module (18) is connected with an automatic early warning device (22), a vibration intervention motor (23) and an automatic braking module (16); the alarm module (13) is connected with the ECU control module (18), the display (17) and the switch (19) and is used for diagnosing the faults of the ECU, transmitting fault codes to the display and starting the switch (19) at the same time; the power supply module (14) is connected with the alarm module (13) and the electronic control unit ECU.

2. A working vehicle fatigue driving intervention system according to claim 1, wherein the steering wheel grip sensor (1) is mounted on the surface of the steering wheel for detecting the grip condition of the driver; the touch sensor (3) is arranged on the surface of the steering wheel and is used for detecting the time that the driver disengages from the steering wheel once and the times of disengaging from the steering wheel per unit time; the horn key sensor (4) is arranged at the horn key and used for detecting the key pressing times in unit time; the speed sensor (5) is arranged on an accelerator pedal and used for detecting the instantaneous speed of the vehicle during running; the three-axis acceleration sensor (6) is arranged at the center of the vehicle body and used for detecting the instantaneous lateral acceleration and the instantaneous longitudinal acceleration of the vehicle; the heart rate sensor (7) is arranged below a driver seat and used for detecting the heart rate condition of a driver; the sound sensor (8) is arranged below the driver seat and used for detecting the tone of the driver; the distance measuring sensor (9) is arranged on a front bumper of the vehicle and is used for detecting the distance between the vehicle and the front vehicle; a vehicle event data recorder (10) and a GPS are mounted at the front windshield for detecting the distance of the vehicle from the lane.

3. A working vehicle fatigue driving intervention system according to claim 1, wherein the ECU data processing module (15) is comprised of a comparator and a data storage of the ECU.

4. A work vehicle fatigue driving intervention system as claimed in claim 1, wherein the automatic early warning device (22) comprises primary and secondary voice alerts.

5. A work vehicle fatigue driving intervention system according to claim 1, wherein the vibration intervention motor (23) is mounted under the driver's seat, comprising primary and secondary vibration interventions.

6. A working vehicle fatigue driving intervention system according to claim 1, wherein the alarm module (13) comprises an alarm, a fault code repository and a triggering circuit.

7. A fatigue driving intervention system for a work vehicle according to claim 6, wherein the switch (19) is connected to the triggering circuit of the alarm module (13), and the switch (19) is installed at the driving seat.

8. The engineering vehicle fatigue driving intervention system as recited in claim 1, wherein the data acquisition module (11) is connected with a rotation angle timer (12) to realize a timing function.

9. A fatigue driving intervention system for engineering vehicles as claimed in claim 1, wherein a relay (20) is arranged between the ECU control module (18) and the automatic early warning device (22), and a time delay relay (21) is arranged between the ECU control module (18) and the vibration intervention motor (23).

10. An intervention method of a fatigue driving intervention system of a construction vehicle, which is based on any one of claims 1 to 9, and comprises the following steps: