CN101246631A - Method and system for monitoring fatigue condition of drivers - Google Patents
Method and system for monitoring fatigue condition of drivers Download PDFInfo
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- CN101246631A CN101246631A CNA2008100657554A CN200810065755A CN101246631A CN 101246631 A CN101246631 A CN 101246631A CN A2008100657554 A CNA2008100657554 A CN A2008100657554A CN 200810065755 A CN200810065755 A CN 200810065755A CN 101246631 A CN101246631 A CN 101246631A
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Abstract
The present invention belongs to communication field, providing a method and system of monitoring the fatigue state of steerer. The method includes following steps: A. the pressure sensing unit collects pressure brought by steerer locating different sitting positions, and transmits to the data processing unit; B. the data processing unit judges the fatigue state of steerer according to the distribution condition of the pressure value; C. the data processing unit transmits command to the alarm unit according to the fatigue state, touching the alarm unit to generate alarming. Contrast to the present technplogy, the invention judges the fatigue state of steerer according to the pressure value brought by steerer locating different sitting positions under the steer course, does not judge according to the steering time, this enchances the accuracy of the fatigue state judgement and monitor of the steerer.
Description
Technical field
The present invention relates to the communications field, more particularly, relate to a kind of method and system that driver's fatigue state is monitored.
Background technology
Now, automobile has become an indispensable part in people's life, but annual traffic hazard is high, wherein has a considerable amount of traffic hazards to cause owing to the driver drives under fatigue state, therefore detect driver's fatigue state and also reminded, be very important.
Present widely used fatigue driving detection system be to rely on the vehicle ' time to judge whether the driver is in the fatigue driving stage merely, so reliability is not high, and the accuracy of judgement is lower.
And another kind of more advanced detection method is to utilize facial expression to detect driver's fatigue state, and still this mode implements extremely complexity, and cost is higher, is difficult to realize a large amount of productions and universal.
Therefore the method that needs a kind of new fatigue state to the driver to monitor can not increase the accuracy that improves under the condition of cost the judgement of driver's fatigue state.
Summary of the invention
The object of the present invention is to provide a kind of system that driver's fatigue state is monitored, be intended to solve the lower problem of accuracy that prior art is judged driver's fatigue state and monitored.
The present invention also aims to provide a kind of method that driver's fatigue state is monitored, to solve the above-mentioned problems in the prior art better.
In order to realize goal of the invention, described system comprises pressure sensitive unit, data processing unit, alarm unit;
Described pressure sensitive unit and data processing unit carry out data interaction, be used to gather the driver when being in different sitting posture to seat applied pressure value, and it is sent into data processing unit;
Described data processing unit and pressure sensitive unit and alarm unit carry out data interaction, are used for judging according to the distribution situation of described force value driver's fatigue state, and send instruction to alarm unit according to fatigue state;
Described alarm unit and data processing unit carry out data interaction, and the instruction that is used for sending according to data processing unit is initiated to report to the police.
Preferably, described data processing unit further comprises force value distribution module, data contrast module, fatigue state reckoning module;
The force value that described force value distribution module is used for gathering according to pressure sensitive unit is drawn the force value distribution plan;
Described data contrast module and force value distribution module carry out data interaction, are used for the force value distribution plan of force value distribution plan and normal sitting position is compared;
Described fatigue state calculates that module and data contrast module and carry out data interaction, is used for calculating according to comparing result driver's fatigue state, and sends instruction to alarm unit according to fatigue state.
Preferably, described force value distribution module is further used for, and the described force value of pressure sensitive unit collection is converted to analog voltage, and calculates the DATA DISTRIBUTION of this analog voltage, thereby draw the force value distribution plan according to described DATA DISTRIBUTION.
Preferably, described data contrast module is further used for, and determines centre of gravity place according to described force value distribution plan, and compares with centre of gravity place in the force value distribution plan of normal sitting position, draws barycentre offset.
Preferably, described fatigue state calculates that module stores has: the mapping table between barycentre offset and the fatigue state grade, and be provided with alarm threshold value at the fatigue state grade;
Described fatigue state is calculated the fatigue state grade of module according to described mapping table judgement driver, and itself and alarm threshold value are compared, and then sends alarm command to alarm unit if reach alarm threshold value.
In order to realize goal of the invention better, a kind of method of driver's fatigue state being monitored based on aforementioned system also is provided, may further comprise the steps:
A. pressure sensitive unit gather the driver when being in different sitting posture to seat applied pressure value, and it is sent into data processing unit;
B. data processing unit is judged driver's fatigue state according to the distribution situation of described force value;
C. data processing unit sends instruction to alarm unit according to fatigue state, touches alarm unit and initiates to report to the police.
Preferably, further comprise before the described steps A: in data processing unit, store the mapping table between barycentre offset and the fatigue state grade, and alarm threshold value P is set at the fatigue state grade.
Preferably, described step B further comprises:
B1. data processing unit is drawn the force value distribution plan according to the force value of pressure sensitive unit collection;
B2. data processing unit compares the force value distribution plan of force value distribution plan and normal sitting position;
B3. data processing unit is calculated driver's fatigue state according to comparing result.
Preferably, described step B1 further comprises:
B11. data processing unit is converted to analog voltage with the described force value of pressure sensitive unit collection;
B12. calculate the DATA DISTRIBUTION of this analog voltage;
B13. draw the force value distribution plan according to described DATA DISTRIBUTION.
Preferably, described step B2 further comprises:
B21. data processing unit is determined centre of gravity place according to described force value distribution plan;
B22. data processing unit compares the centre of gravity place in the force value distribution plan of described centre of gravity place and normal sitting position, draws barycentre offset.
Preferably, described step C further comprises:
C1. data processing unit will be judged the fatigue state grade P that draws according to described mapping table
1P compares with alarm threshold value, if P
1〉=P then sends alarm command to alarm unit;
C2. alarm unit is received described alarm command, then initiates to report to the police.
Difference with the prior art of the present invention is, when in driving procedure, being in different sitting posture seat applied pressure value is judged driver's fatigue state according to the driver, rather than rely on the vehicle ' time to judge, therefore improved the accuracy that driver's fatigue state is judged and monitored.
Description of drawings
Fig. 1 is the system construction drawing of among the present invention driver's fatigue state being monitored;
Fig. 2 is the system construction drawing of in one embodiment of the present of invention driver's fatigue state being monitored;
Fig. 3 is the structural drawing of data processing unit in one embodiment of the present of invention;
Fig. 4 is the method flow diagram of among the present invention driver's fatigue state being monitored;
Fig. 5 is the method flow diagram of in one embodiment of the present of invention driver's fatigue state being monitored;
Fig. 6 A is the distribution schematic diagram of the force value that collects in one embodiment of the present of invention;
Fig. 6 B is the distribution schematic diagram that carries out revised relative pressure value at Fig. 6 A;
Fig. 6 C is the center of gravity contrast synoptic diagram that force value distributes among normal condition and the embodiment;
Fig. 7 A is the force value distribution plan of normal sitting position among the embodiment;
Fig. 7 B is the force value distribution plan of sitting posture during fatigue driving state among the embodiment.
Embodiment
In order to make purpose of the present invention, technical scheme and advantage clearer,, the present invention is further elaborated below in conjunction with drawings and Examples.Should be appreciated that specific embodiment described herein only in order to explanation the present invention, and be not used in qualification the present invention.
The present invention by pressure sensitive unit gather the driver when in driving procedure, being in different sitting posture to seat applied pressure value, judge driver's fatigue state according to the distribution situation of this force value, thereby send instruction to alarm unit based on fatigue state, touch alarm unit and initiate to report to the police, the present invention has improved the accuracy that driver's fatigue state is judged and monitored.
Fig. 1 shows the system architecture of among the present invention driver's fatigue state being monitored, and this system comprises pressure sensitive unit 100, data processing unit 200, alarm unit 300.Should be noted that the annexation between each equipment is the needs of explaining its information interaction and control procedure for clear in all diagrams of the present invention, therefore should be considered as annexation in logic, and should not only limit to physical connection.Wherein:
(1) pressure sensitive unit 100 carries out data interaction with data processing unit 200, be used to gather the driver when being in different sitting posture to seat applied pressure value, and it is sent into data processing unit 200.In one embodiment, this pressure sensitive unit 100 is pressure transducers, typically can adopt No. 5 pressure transducers, is installed in the centre at driver seat and all around respectively, and these pressure transducers are real-time transmitted to data processing unit 200 with force value.
(2) data processing unit 200 carries out data interaction with pressure sensitive unit 100 and alarm unit 300, is used for judging according to the distribution situation of described force value driver's fatigue state, and sends instruction to alarm unit 300 according to fatigue state.In one embodiment, as shown in Figure 3, it further comprises force value distribution module 201, data contrast module 202, fatigue state reckoning module 203, wherein:
The force value that force value distribution module 201 is gathered according to pressure sensitive unit 100 is drawn the force value distribution plan.In one embodiment, the described force value that force value distribution module 201 is gathered pressure sensitive unit 100 is converted to analog voltage, and calculates the DATA DISTRIBUTION of this analog voltage, thereby draws the force value distribution plan according to this DATA DISTRIBUTION.
Fatigue state calculates that module 203 and data contrast module 202 and carry out data interaction, is used for calculating according to comparing result driver's fatigue state, and sends instruction to alarm unit 300 according to fatigue state.In one embodiment, fatigue state calculates that module 203 stores the mapping table between barycentre offset and the fatigue state grade in advance, and is provided with alarm threshold value at the fatigue state grade.Therefore fatigue state calculates that 203 modules can judge driver's fatigue state grade according to this mapping table, and its and alarm threshold value are compared, and then sends alarm command to alarm unit 300 as if reaching alarm threshold value.
In an exemplary embodiments, data processing unit 200 has 10 8 passage A/D converters, wherein 5 passages connect the output of No. 5 pressure transducers respectively, CPU is according to the force value that collects, calculate the force value distribution plan, and with the contrast of the force value distribution plan of normal driving sitting posture, thereby extrapolate driver's driving present situation.
(3) alarm unit 300 carries out data interaction with data processing unit 200, is used for initiating to report to the police according to the instruction that data processing unit 200 sends.In the present invention, alarm unit 300 can be reported to the police in several ways, for example audio alert, the prompting of glittering, display screen prompting or the like.
In another embodiment of the present invention, as shown in Figure 2, this system also further comprises a power supply unit 400, is used to other unit energizes.For example, the outside 5V DC power supply of using of native system, system carries the 5V direct current changes the 3.3V power supply chip.Certainly, each unit among the present invention also can be to come energize by built-in power separately, need not to realize by independent power supply unit 400.
Fig. 4 is the method flow diagram of among the present invention driver's fatigue state being monitored, and this method flow is based on Fig. 1, Fig. 2, system architecture shown in Figure 3, and detailed process is as follows:
Carry out institute of the present invention in steps before, the mapping table in data processing unit 200 between storage barycentre offset and the fatigue state grade, and alarm threshold value P is set at the fatigue state grade.
In step S401, pressure sensitive unit 100 gather drivers when being in different sitting posture to seat applied pressure value, and it is sent into data processing unit 200.In one embodiment, adopt No. 5 pressure transducers, be installed in the centre at driver seat and all around respectively, these pressure transducers are real-time transmitted to data processing unit 200 with force value.
In step S402, data processing unit 200 is judged driver's fatigue state according to the distribution situation of force value.Specifically may further comprise the steps: the force value that (1) data processing unit 200 is gathered according to pressure sensitive unit 100 is drawn the force value distribution plan, in one embodiment, the described force value that data processing unit 200 is gathered pressure sensitive unit 100 is converted to analog voltage, and calculate the DATA DISTRIBUTION of this analog voltage, draw the force value distribution plan according to DATA DISTRIBUTION then; (2) data processing unit 200 compares the force value distribution plan of force value distribution plan and normal sitting position, in one embodiment, data processing unit 200 is determined centre of gravity place according to the force value distribution plan, then the centre of gravity place in the force value distribution plan of described centre of gravity place and normal sitting position is compared, draw barycentre offset; (3) data processing unit 200 is according to comparing result reckoning driver's fatigue state, and in one embodiment, data processing unit 200 is to judge according to the mapping table of storage in advance to draw fatigue state grade P
1
In step S403, data processing unit 200 sends instruction to alarm unit 300 according to fatigue state, touches alarm unit 300 and initiates to report to the police.In one embodiment, specifically may further comprise the steps: (1) data processing unit 200 is with fatigue state grade P
1P compares with alarm threshold value, if P
1〉=P then sends alarm command to alarm unit 300; (2) alarm unit 300 is received described alarm command, then initiates to report to the police.
Fig. 5 is the method flow diagram of in one embodiment of the present of invention driver's fatigue state being monitored, and this method flow is based on Fig. 1, Fig. 2, system architecture shown in Figure 3, and detailed process is as follows:
Carry out institute of the present invention in steps before, the mapping table in data processing unit 200 between storage barycentre offset and the fatigue state grade, and alarm threshold value P is set at the fatigue state grade.
Carry out institute of the present invention in steps before, the mapping table in data processing unit 200 between storage barycentre offset and the fatigue state grade, and alarm threshold value P is set at the fatigue state grade.
In step S501, pressure sensitive unit 100 gather drivers when being in different sitting posture to seat applied pressure value.
In step S502, the described force value that data processing unit 200 is gathered pressure sensitive unit 100 is converted to analog voltage.
In step S503, calculate the DATA DISTRIBUTION of this analog voltage.
In step S504, draw the force value distribution plan according to the DATA DISTRIBUTION of analog voltage, in the present embodiment, the force value that is collected distributes to be actually with the DATA DISTRIBUTION of analog voltage and represents, as shown in Figure 6A.Revised force value is shown in Fig. 6 B.
In step S505, data contrast module 202 is determined centre of gravity place according to the force value distribution plan, two circles shown in Fig. 6 C, the circle that wherein is arranged in the top is represented the centre of gravity place of present embodiment force value distribution, is positioned at the round centre of gravity place of representing normal condition downforce value to distribute of below.
In step S506, the centre of gravity place in the force value distribution plan of this centre of gravity place and normal sitting position is compared, draw barycentre offset.Shown in Fig. 7 A, be the force value distribution plan of normal sitting position among the embodiment; Fig. 7 B is the force value distribution plan of sitting posture during fatigue driving state among the embodiment.
In step S507, data processing unit 200 is judged driver's fatigue state grade P1 according to described mapping table.
In step S508, data processing unit 200 is further judged, fatigue state grade P
1Whether reach alarm threshold value P: if P
1〉=P then sends alarm command to alarm unit 300; If P
1＜P then finishes.
In step S509, data processing unit 200 sends alarm command according to fatigue state, and control alarm unit 300 is reported to the police, and for example sends to pipe by hummer and reports to the police.
The above only is preferred embodiment of the present invention, not in order to restriction the present invention, all any modifications of being done within the spirit and principles in the present invention, is equal to and replaces and improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1, a kind of system that driver's fatigue state is monitored is characterized in that, comprises pressure sensitive unit, data processing unit, alarm unit;
Described pressure sensitive unit and data processing unit carry out data interaction, be used to gather the driver when being in different sitting posture to seat applied pressure value, and it is sent into data processing unit;
Described data processing unit and pressure sensitive unit and alarm unit carry out data interaction, are used for judging according to the distribution situation of described force value driver's fatigue state, and send instruction to alarm unit according to fatigue state;
Described alarm unit and data processing unit carry out data interaction, and the instruction that is used for sending according to data processing unit is initiated to report to the police.
2, the system that driver's fatigue state is monitored according to claim 1 is characterized in that, described data processing unit further comprises force value distribution module, data contrast module, fatigue state reckoning module;
The force value that described force value distribution module is gathered according to pressure sensitive unit is drawn the force value distribution plan;
Described data contrast module and force value distribution module carry out data interaction, are used for the force value distribution plan of force value distribution plan and normal sitting position is compared;
Described fatigue state calculates that module and data contrast module and carry out data interaction, is used for calculating according to comparing result driver's fatigue state, and sends instruction to alarm unit according to fatigue state.
3, the system that driver's fatigue state is monitored according to claim 2, it is characterized in that, described fatigue state calculates that module stores has: the mapping table between barycentre offset and the fatigue state grade, and be provided with alarm threshold value at the fatigue state grade;
Described fatigue state is calculated the fatigue state grade of module according to described mapping table judgement driver, and itself and alarm threshold value are compared, and then sends alarm command to alarm unit if reach alarm threshold value.
4, the system that driver's fatigue state is monitored according to claim 1 is characterized in that, the type of alarm of described alarm unit comprises: audio alert, the prompting of glittering, display screen prompting.
5, a kind of method of driver's fatigue state being monitored based on the described system of claim 1 is characterized in that, said method comprising the steps of:
A. pressure sensitive unit gather the driver when being in different sitting posture to seat applied pressure value, and it is sent into data processing unit;
B. data processing unit is judged driver's fatigue state according to the distribution situation of described force value;
C. data processing unit sends instruction to alarm unit according to fatigue state, touches alarm unit and initiates to report to the police.
6, the method that driver's fatigue state is monitored according to claim 5, it is characterized in that, further comprise before the described steps A: in data processing unit, store the mapping table between barycentre offset and the fatigue state grade, and alarm threshold value P is set at the fatigue state grade.
7, the method that driver's fatigue state is monitored according to claim 6 is characterized in that, described step B further comprises:
B1. data processing unit is drawn the force value distribution plan according to the force value of pressure sensitive unit collection;
B2. data processing unit compares the force value distribution plan of force value distribution plan and normal sitting position;
B3. data processing unit is calculated driver's fatigue state according to comparing result.
8, the method that driver's fatigue state is monitored according to claim 7 is characterized in that, described step B1 further comprises:
B11. data processing unit is converted to analog voltage with the described force value of pressure sensitive unit collection;
B12. calculate the DATA DISTRIBUTION of this analog voltage;
B13. draw the force value distribution plan according to described DATA DISTRIBUTION.
9, the method that driver's fatigue state is monitored according to claim 7 is characterized in that, described step B2 further comprises:
B21. data processing unit is determined centre of gravity place according to described force value distribution plan;
B22. data processing unit compares the centre of gravity place in the force value distribution plan of described centre of gravity place and normal sitting position, draws barycentre offset.
10, the method that driver's fatigue state is monitored according to claim 9 is characterized in that, described step C further comprises:
C1. data processing unit will be judged the fatigue state grade P that draws according to described mapping table
1P compares with alarm threshold value, if P
1〉=P then sends alarm command to alarm unit;
C2. alarm unit is received described alarm command, then initiates to report to the police.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100657554A CN101246631A (en) | 2008-02-29 | 2008-02-29 | Method and system for monitoring fatigue condition of drivers |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100657554A CN101246631A (en) | 2008-02-29 | 2008-02-29 | Method and system for monitoring fatigue condition of drivers |
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| CNA2008100657554A Pending CN101246631A (en) | 2008-02-29 | 2008-02-29 | Method and system for monitoring fatigue condition of drivers |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102529721A (en) * | 2010-10-21 | 2012-07-04 | 通用汽车环球科技运作有限责任公司 | Method for operating a motor vehicle and motor vehicle |
| CN104464194A (en) * | 2014-12-15 | 2015-03-25 | 宇龙计算机通信科技(深圳)有限公司 | Alarm prompting method, alarm prompting system, terminal and wearable device |
| CN104825174A (en) * | 2015-04-17 | 2015-08-12 | 深圳市元征科技股份有限公司 | Fatigue state detection method and terminal |
| CN105764417A (en) * | 2015-09-23 | 2016-07-13 | 深圳还是威健康科技有限公司 | A human body fatigue monitoring method and an intelligent wristband |
| CN106671824A (en) * | 2017-03-09 | 2017-05-17 | 重庆快星新能源汽车有限公司 | Electric vehicle control method |
| CN109353251A (en) * | 2018-09-03 | 2019-02-19 | 温州大学 | A kind of system and method for anti-fatigue-driving motor vehicles |
| CN109353347A (en) * | 2018-12-04 | 2019-02-19 | 爱驰汽车有限公司 | Vehicle and its driving adapter tube based reminding method, system, electronic equipment and storage medium |
| CN109646023A (en) * | 2019-01-29 | 2019-04-19 | 深圳鸿鹏新能源科技有限公司 | Adjust the method and system of product line worker's body and mind |
| CN110936962A (en) * | 2019-09-17 | 2020-03-31 | 天津职业技术师范大学(中国职业培训指导教师进修中心) | Method for simultaneously monitoring physiological and psychological fatigue in driving |
-
2008
- 2008-02-29 CN CNA2008100657554A patent/CN101246631A/en active Pending
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102529721A (en) * | 2010-10-21 | 2012-07-04 | 通用汽车环球科技运作有限责任公司 | Method for operating a motor vehicle and motor vehicle |
| CN102529721B (en) * | 2010-10-21 | 2016-08-03 | 通用汽车环球科技运作有限责任公司 | The operation method of motor vehicles and motor vehicles |
| CN104464194A (en) * | 2014-12-15 | 2015-03-25 | 宇龙计算机通信科技(深圳)有限公司 | Alarm prompting method, alarm prompting system, terminal and wearable device |
| CN104825174A (en) * | 2015-04-17 | 2015-08-12 | 深圳市元征科技股份有限公司 | Fatigue state detection method and terminal |
| CN105764417A (en) * | 2015-09-23 | 2016-07-13 | 深圳还是威健康科技有限公司 | A human body fatigue monitoring method and an intelligent wristband |
| CN106671824A (en) * | 2017-03-09 | 2017-05-17 | 重庆快星新能源汽车有限公司 | Electric vehicle control method |
| CN106671824B (en) * | 2017-03-09 | 2019-01-08 | 重庆快星新能源汽车有限公司 | A kind of entire electric car control method |
| CN109353251A (en) * | 2018-09-03 | 2019-02-19 | 温州大学 | A kind of system and method for anti-fatigue-driving motor vehicles |
| CN109353347A (en) * | 2018-12-04 | 2019-02-19 | 爱驰汽车有限公司 | Vehicle and its driving adapter tube based reminding method, system, electronic equipment and storage medium |
| CN109646023A (en) * | 2019-01-29 | 2019-04-19 | 深圳鸿鹏新能源科技有限公司 | Adjust the method and system of product line worker's body and mind |
| CN110936962A (en) * | 2019-09-17 | 2020-03-31 | 天津职业技术师范大学(中国职业培训指导教师进修中心) | Method for simultaneously monitoring physiological and psychological fatigue in driving |
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Application publication date: 20080820 |