CN202686224U

CN202686224U - Fatigue driving alarm device

Info

Publication number: CN202686224U
Application number: CN 201220287417
Authority: CN
Inventors: 饶正善; 马芳武; 汤小生; 赵福全
Original assignee: Zhejiang Geely Holding Group Co Ltd; Zhejiang Geely Automobile Research Institute Co Ltd; Zhejiang Geely Automobile Research Institute Co Ltd Hangzhou Branch
Current assignee: Zhejiang Geely Holding Group Co Ltd; Zhejiang Geely Automobile Research Institute Co Ltd; Zhejiang Geely Automobile Research Institute Co Ltd Hangzhou Branch
Priority date: 2012-06-15
Filing date: 2012-06-15
Publication date: 2013-01-23
Anticipated expiration: 2022-06-15

Abstract

The utility model discloses a fatigue driving alarm device, and aims at solving the technical problems that in the prior art, an existing fatigue driving detecting device is complex in structure, inconvenient to use and the like. According to the fatigue driving alarm device, a vehicle-mounted electronic control unit (ECU), a mileage detecting component and an engine rotation speed detecting component are utilized. When continuous driving mileage and continuous driving time of a driver reach preset values, the fatigue driving alarm device sounds to prompt the driver to keep on driving after the driver takes a rest, and therefore driving safety is ensured. The fatigue driving alarm device comprises a mileage sensor, an engine rotation speed sensor, a counting module, an alarm module and the ECU, wherein the mileage sensor, the engine rotation speed sensor, the counting module and the alarm module are connected with the ECU.

Description

The fatigue driving warning device

Technical field

The utility model relates to the automobile ancillary technique, relates in particular to a kind of fatigue driving warning device for automobile.

Background technology

Along with constantly popularizing of automobile, drive the traffic accident that causes because of driver fatigue and often occur.For avoiding the generation of this type of event, the technical scheme that various detection driver fatigues is arranged in the prior art and report to the police, such as judging with infrared, ultrasonic testing chaufeur range direction dish distance, chaufeur head position etc. whether chaufeur is in fatigue state, use in addition image recognition technology to judge by number of winks, facial expression etc. whether chaufeur is fatigue driving, but its complex structure of these detection techniques, install and use inconvenience, therefore, actual use is less.

Open day be that on 03 17th, 2010, publication number are that the patent documentation of CN101673464A discloses such technical scheme: a kind of intelligent management system of fatigue driving, it forms with the intelligent management supervisory control computer that is contained in the traffic control center by being contained in the indoor tired driving automatic monitoring microprocessor of each vehicular drive, and the tired driving automatic monitoring microprocessor comprises facial image acquisition module, fatigue monitoring and alarm module, monitoring wireless communication module, GPS and voice module etc.; Comprise each vehicle driver's authentication module etc. with the intelligent management supervisory control computer.As seen this scheme structure is more complicated, uses very inconvenient.

Summary of the invention

The utility model mainly is to solve the technical matterss such as the existing fatigue driving detection device complex structure of prior art, use inconvenience, a kind of fatigue driving warning device is provided, its use vehicle-mounted electronic control unit and mileage, engine speed detection part, in time provide alarm at the continuous travelled distance of chaufeur or when continuously running time reaches setting value, reminding driver continues to travel after having a rest again, guarantees traffic safety.

The utility model is mainly solved by following technical proposals for the prior art problem, a kind of fatigue driving warning device, comprise odometer sensor, engine speed sensor, counting module, alarm module and ECU, odometer sensor, engine speed sensor, counting module and alarm module are connected ECU.

This scheme is the ECU(electronic control unit onboard) control is down, utilize odometer sensor and the continuous travelled distance of counting module accumulative total vehicle on the car, utilize engine speed sensor to judge that driving engine is from starting to the process (rotating speed is considered as closing when being zero) of cutting out.The counting module mileage begins behind engine starting, and mileage finishes behind the tail-off, and to reach the specified value backsight be that chaufeur is in fatigue state to mileage in during this period; Counting module also starts timing when mileage begins simultaneously, when time cumulation reaches specified value, although mileage does not arrive specified value, thinks that too chaufeur is in fatigue state.When judging that chaufeur is in fatigue state, provide alarm by alarm module, the prompting chaufeur continues to travel after in time having a rest again.

As preferably, be provided with mileage threshold values and time cumulation threshold values in the counting module.The mileage threshold values is the higher limit of the continuous travelled distance of vehicle of regulation, and when reaching this higher limit such as 500Km, tired the needs has a rest immediately to be judged to be driving; The time cumulation threshold values be the cumulative hours that travels continuously of vehicle of regulation such as 4 hours, tired the needs has a rest immediately to be judged to be chaufeur.

As preferably, also be provided with the timing of tail-off duration in the counting module.The tail-off duration is again to start the duration that timing finishes from the beginning timing that kills engine to driving engine.When the tail-off duration less than specified value during such as 30 minutes, when vehicle travelled again, travelled distance was accumulated on the travelled distance of last time, running time is in running time accumulative total last time; When tail-off duration during greater than specified value, think that then chaufeur is had a rest, when vehicle travelled again, travelled distance was since 0 accumulative total, and running time is since 0 timing.

As preferably, odometer sensor is the odometer sensor that detects wheel turning collar number and output electrical signals.Adopt the odometer sensor of electric signal output, under ECU control, counting module rotates the number of turns according to diameter of tyres, vehicle and calculates mileage.Also can be obtained to process after the travelled distance numeral by the input end of digital mileage meter and obtain required travelled distance.

As preferably, ECU also connects the GPS navigation unit.After fatigue warning occurring, nearest rest place is searched in ECU notice GPS navigation unit, and the GPS navigation unit finds after the nearest rest place, and the verbal announcement chaufeur is had a rest to the rest place.

The beneficial effect that the utility model brings is, utilize ECU on the car, engine speed sensor, odometer sensor, by computing module accumulative total travelled distance and running time, when travelled distance or running time reach specified value (threshold values), warn to chaufeur, reminding driver is in time had a rest, and searches nearest rest place by navigation elements, restart vehicle and continue to travel after chaufeur obtains having a rest, mileage calculation, Time Calculation restart.This apparatus structure is simple, does not need additionally to increase measurement component, installs, uses very convenient.

Description of drawings

Fig. 1 is a kind of structured flowchart of the present utility model;

Fig. 2 is a kind of diagram of circuit of the present utility model.

Among the figure: the 1st, odometer sensor, the 2nd, engine speed sensor, the 3rd, counting module, the 4th, ECU, the 5th, GPS navigation unit, the 6th, alarm module.

The specific embodimentBelow by embodiment, and by reference to the accompanying drawings, the technical solution of the utility model is further described in detail.

Embodiment: as shown in Figure 1, the utility model is a kind of fatigue driving warning device, and ECU 4 connects odometer sensor 1, engine speed sensor 2, counting module 3, GPS navigation unit 5 and alarm module 6.

Wherein, odometer sensor 1 is noncontacting proximity sensor commonly used in the automobile, is installed on the output shaft of gear-box, sends counting pulse signal to ECU 4, and counting module 3 carries out mileage according to output shaft of gear-box and vehicle wheel rotational speed ratio and vehicle tyre diameter; Beginning and the end of the beginning of the signal control travelled distance of engine speed sensor 2 accumulative total and end, running time, and rest halt length whether actv. is judged; Alarm module 6 is buzzer phone; The working power of ECU 4 is taken from Vehicular accumulator cell, so that ECU 4 carries out the timing of tail-off duration after killing engine.

Figure 2 shows that the diagram of circuit of computing module 3, its basic step is:

Step 101: vehicle begins to travel front to mileage, time accumulated value zero clearing, and aggregate-value is started from scratch;

Step 102: judge whether driving engine starts, engine speed sensor 2 tests the speed when being zero, and driving engine does not start, and engine starting when non-vanishing tests the speed;

Step 103: detect the beginning mileage behind the engine starting by odometer sensor 1;

Step 104: declare the mileage value and whether reach threshold values, regulation mileage threshold values is 500Km in the present embodiment, the mileage value turns step 108 alarm when reaching 500Km, and turns step 114 notice GPS navigation unit and search nearest rest place voice suggestion chaufeur;

Step 105: because chaufeur is had a rest or other matters, tail-off whether occurred during the judgement;

Step 106: midway kill engine if there is crossing, judge then whether the tail-off duration is that regulation is closed duration, to close duration in the present embodiment and be decided to be 30 minutes, close duration and equal or exceed 30 minutes, think that chaufeur fully has a rest, change step 101 mileage and time cumulation zero clearing over to, restart accumulative total; Close duration less than turning step 107 in 30 minutes;

Step 107: the tail-off duration is less than 30 minutes, and mileage continues accumulative total on mileage basis last time;

Step 109: behind the engine starting simultaneously time cumulation begin the registration of vehicle running time;

Step 110: judge whether time cumulation reaches threshold values, the setting-up time threshold values is 4 hours in the present embodiment, and time accumulated value reaches 4 hours and turns step 108 alarm, and turns step 114 notice GPS navigation unit and search nearest rest place voice suggestion chaufeur;

Step 111: because chaufeur is had a rest or other matters, tail-off whether occurred during the judgement;

Step 112: midway kill engine if there is crossing, judge then whether the tail-off duration is that regulation is closed duration, to close duration in the present embodiment and be decided to be 30 minutes, close duration and equal or exceed 30 minutes, think that chaufeur fully has a rest, change step 101 mileage and time cumulation zero clearing over to, restart accumulative total; Close duration less than turning step 113 in 30 minutes;

Step 113: the tail-off duration is less than 30 minutes, and time cumulation continues accumulative total on time cumulation basis last time from after driving engine starts again.

So the feature that the utlity model has is: utilize ECU on the car, engine speed sensor, odometer sensor, by computing module accumulative total travelled distance and running time, when travelled distance or running time reach specified value (threshold values), warn to chaufeur, reminding driver is in time had a rest, and search nearest rest place by navigation elements, restarting vehicle after chaufeur is effectively had a rest continues to travel, mileage calculation, Time Calculation restart, this apparatus structure is simple, do not need additionally to increase measurement component, install, use very convenient.

Claims

1. fatigue driving warning device, it is characterized in that: comprise odometer sensor, engine speed sensor, counting module, alarm module and ECU, described odometer sensor, engine speed sensor, counting module and alarm module are connected ECU.

2. described a kind of fatigue driving warning device according to claim 1 is characterized in that: be provided with mileage threshold values and time cumulation threshold values in the described counting module.

3. described a kind of fatigue driving warning device according to claim 1 and 2 is characterized in that: also be provided with the timing of tail-off duration in the described counting module.

4. described a kind of fatigue driving warning device according to claim 1, it is characterized in that: described odometer sensor is the odometer sensor that detects wheel turning collar number and output electrical signals.

5. described a kind of fatigue driving warning device according to claim 1, it is characterized in that: described ECU also connects the GPS navigation unit.