CN202995971U - Driving fatigue state pre-alarming device based on automotive track - Google Patents
Driving fatigue state pre-alarming device based on automotive track Download PDFInfo
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- CN202995971U CN202995971U CN 201220621099 CN201220621099U CN202995971U CN 202995971 U CN202995971 U CN 202995971U CN 201220621099 CN201220621099 CN 201220621099 CN 201220621099 U CN201220621099 U CN 201220621099U CN 202995971 U CN202995971 U CN 202995971U
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Abstract
The utility model discloses a driving fatigue state pre-alarming device based on automotive track, which comprises the following components: a steering wheel steering-angle sensor, a steering lamp control circuit, a CCD camera, an image decoder, a timer, a DSP, a light emitting diode and a buzzer, wherein, the steering wheel steering-angle sensor and the steering lamp control circuit are connected with an input end of the DSP through an A/D converter. The CCD camera is connected with the input end of the DSP through the image decoder. The output end of the DSP is connected with the buzzer and the light emitting diode. The DSP is also connected with the timer. The driving fatigue state pre-alarming device comprehensively determines fatigue state of the driver through an image technique and an automatic control technique. The driving fatigue state pre-alarming device has the following advantages: high control precision, low use cost, high suitability for popularization, and safety insurance for driving safety.
Description
Technical field
The utility model belongs to the automobile driving safe field, is specifically related to a kind of driving fatigue state prior-warning device.
Background technology
Fatigue driving is the key factor that causes traffic hazard, becomes one of important hidden danger of current traffic safety.The driver is when fatigue, and therefore its perception to surrounding environment, situation judgement and the ability of controlling of vehicle is had in various degree decline be easy to accident, approximately has 9000 people to die from fatigue driving every year.
The Japan Zhong Dao of keio university research department utilizes EEG to estimate driver's sleepiness, and the transversal displacement amount of vehicle, the evaluation index that the bearing circle operational ton can be used as the driver fatigue state are found in research, and can realize the early stage of fatigue early warning.The driver is general and do not know to lay oneself open to dangerous fatigue driving state and continue to drive before having an accident; driving fatigue is not a kind of morbid state, but a kind of physiological self-protection reaction, as long as through suitably having a rest; can remove, muscle power and ability can be recovered completely.One of vital role of fatigue driving detecting system is exactly that reminding driver is just being located dangerous fatigue driving state, and the generation signal urges the driver to have a rest immediately.Therefore, research and development driving fatigue prior-warning device is significant to improving China's traffic safety status.
Summary of the invention
For the deficiency that prior art exists, the purpose of this utility model is, a kind of driving fatigue state prior-warning device based on track of vehicle is provided.
In order to realize above-mentioned task, the utility model adopts following technical scheme to be achieved:
A kind of driving fatigue state prior-warning device based on track of vehicle, comprise steering wheel angle sensor, steering indicating light control circuit, CCD camera, image decoder, timer, DSP, light emitting diode and hummer, wherein, steering wheel angle sensor is connected with the input end of DSP by A/D converter with the steering indicating light control circuit, the CCD camera is connected with the input end of DSP by image decoder, and the output terminal of DSP is connected with light emitting diode with hummer, also is connected with timer on DSP.
The utility model also has following technical characterstic:
Described steering wheel angle sensor adopts the KMT32B angular displacement sensor.
It is the CCD camera of WAT-231S2 that described CCD camera adopts model, and described image decoder adopts TVP5145 image decoding chip.
It is the DSP of TMS320DM642 that described DSP adopts model.
Described timer is two, and adopting model is the timer of LY23-JSD52.
Described light emitting diode is two, and model is SMD0805; The model of described hummer is CY-12055.
The utility model adopts image technique and automatic control technology comprehensively to judge driver's fatigue state.Control accuracy is high, use cost is low, be fit to large-scale promotion, for driving safety provides many heavily safety assurances.
Description of drawings
Fig. 1 is hardware connection diagram of the present utility model.
Below in conjunction with drawings and Examples, particular content of the present utility model is described in more detail.
Embodiment
Below provide specific embodiment of the utility model, need to prove that the utility model is not limited to following specific embodiment, all equivalents of doing on present techniques scheme basis all fall into protection domain of the present utility model.
Defer to technique scheme, as shown in Figure 1, a kind of driving fatigue state prior-warning device based on track of vehicle, comprise steering wheel angle sensor, steering indicating light control circuit, CCD camera, image decoder, timer, DSP, light emitting diode and hummer, wherein, steering wheel angle sensor is connected with the input end of DSP by A/D converter with the steering indicating light control circuit, the CCD camera is connected with the input end of DSP by image decoder, the output terminal of DSP is connected with light emitting diode with hummer, also is connected with timer on DSP.
Described steering wheel angle sensor adopts the KMT32B angular displacement sensor.Steering wheel angle sensor is placed in below bearing circle, can detect in real time the corner of bearing circle.Steering wheel angle sensor is the multiturn absolute angle way of output, the absolute angle in the time of can direction of measurement dish multipurpose rotary.
It is the CCD camera of WAT-231S2 that described CCD camera adopts model, and described image decoder adopts TVP5145 image decoding chip.The CCD camera relies on support to be fixed on the inboard of front part of vehicle windshield, and setting angle is according to the vehicle adjustment.The CCD camera is by taking the instantaneous picture of the place ahead environment, and in DSP, DSP judges the hold mode in vehicle and track to process image decoding chip by program image signal transmission.
It is the DSP of TMS320DM642 that described DSP adopts model.
Described timer is two, and adopting model is the timer of LY23-JSD52.Use two timers in the utility model, a timer is in order to monitor the duration of the each operation of driver, and another continues the time of driving for detection of the driver.
Described light emitting diode is two, and model is SMD0805; The model of described hummer is CY-12055.Use two light emitting diodes and hummer to carry out early warning in the utility model.
At first judge whether steering indicating light is opened, the current signal that DSP transmits by the steering indicating light control circuit judges whether steering indicating light is opened, if steering indicating light is opened, the utility model is in holding state, the timer zero clearing; If steering indicating light is closed, the utility model is started working, and timer begins timing, and steering wheel angle sensor detects steering wheel angle, and signal is gone out to deliver to DSP; By CCD camera collection carriageway image, then pass through the image decoding chip image signal transmission in DSP, DSP judges the hold mode in vehicle and track by program.
When DSP was automotive run-off-road to the result of picture signal judgement, DSP judged that the driver enters fatigue state; The time that the timer record bearing circle does not carry out any correction does not operate when the driver that exceeds schedule time carries out any correction to bearing circle, and DSP judges that also the driver enters fatigue state.When in above-mentioned two situations, DSP judges that the driver is in fatigue state, and DSP controls hummer and sounds a buzzer, and DSP controls a light emitting diode and sends the ruddiness alerting driver and have a rest immediately, fatigue-relieving simultaneously.The time that another one timer record driver drives continuously, after the driver drove two hours continuously, DSP judged that also the driver enters fatigue state.DSP controls hummer and sounds a buzzer, and while DSP controls another light emitting diode and sends gold-tinted prompting driver and what time have a rest, and prevents fatigue.
Claims (6)
1. driving fatigue state prior-warning device based on track of vehicle, it is characterized in that, comprise steering wheel angle sensor, steering indicating light control circuit, CCD camera, image decoder, timer, DSP, light emitting diode and hummer, wherein, steering wheel angle sensor is connected with the input end of DSP by A/D converter with the steering indicating light control circuit, the CCD camera is connected with the input end of DSP by image decoder, the output terminal of DSP is connected with light emitting diode with hummer, also is connected with timer on DSP.
2. the driving fatigue state prior-warning device based on track of vehicle as claimed in claim 1, is characterized in that, described steering wheel angle sensor adopts the KMT32B angular displacement sensor.
3. the driving fatigue state prior-warning device based on track of vehicle as claimed in claim 1, is characterized in that, it is the CCD camera of WAT-231S2 that described CCD camera adopts model, and described image decoder adopts TVP5145 image decoding chip.
4. the driving fatigue state prior-warning device based on track of vehicle as claimed in claim 1, is characterized in that, it is the DSP of TMS320DM642 that described DSP adopts model.
5. the driving fatigue state prior-warning device based on track of vehicle as claimed in claim 1, is characterized in that, described timer is two, and adopting model is the timer of LY23-JSD52.
6. the driving fatigue state prior-warning device based on track of vehicle as claimed in claim 1, is characterized in that, described light emitting diode is two, and model is SMD0805; The model of described hummer is CY-12055.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220621099 CN202995971U (en) | 2012-11-21 | 2012-11-21 | Driving fatigue state pre-alarming device based on automotive track |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220621099 CN202995971U (en) | 2012-11-21 | 2012-11-21 | Driving fatigue state pre-alarming device based on automotive track |
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| CN202995971U true CN202995971U (en) | 2013-06-12 |
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| CN 201220621099 Expired - Fee Related CN202995971U (en) | 2012-11-21 | 2012-11-21 | Driving fatigue state pre-alarming device based on automotive track |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103578227A (en) * | 2013-09-23 | 2014-02-12 | 吉林大学 | Fatigue driving detection method based on GPS positioning information |
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2012
- 2012-11-21 CN CN 201220621099 patent/CN202995971U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103578227A (en) * | 2013-09-23 | 2014-02-12 | 吉林大学 | Fatigue driving detection method based on GPS positioning information |
| CN103578227B (en) * | 2013-09-23 | 2015-10-07 | 吉林大学 | Based on the method for detecting fatigue driving of GPS locating information |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130612 Termination date: 20131121 |