CN104723952A - Driving condition detection method - Google Patents
Driving condition detection method Download PDFInfo
- Publication number
- CN104723952A CN104723952A CN201310714337.4A CN201310714337A CN104723952A CN 104723952 A CN104723952 A CN 104723952A CN 201310714337 A CN201310714337 A CN 201310714337A CN 104723952 A CN104723952 A CN 104723952A
- Authority
- CN
- China
- Prior art keywords
- signal
- pressure
- steering wheel
- signals
- driving
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Auxiliary Drives, Propulsion Controls, And Safety Devices (AREA)
Abstract
The invention provides a driving condition detection method. The driving condition detection method includes: detecting vehicle speed through a speed sensor connected to the output end of an engine; detecting steering wheel corners through a steering wheel corner sensor connected to the rotating shaft of a steering wheel; detecting gravity of a driver through a first pressure sensor mounted under a driving seat; detecting pressure of the neck of a driver through a second pressure sensor mounted at the position of the neck of the driving seat; shooting image signals of the driver through a camera arranged on a shading plate of the driving position; receiving vehicle speed signals, steering wheel corner signals, first pressure signals, second pressure signals and the image signals through a controller, collecting the first pressure signals, the second pressure signals and the image signals in real time, comparing with the latch value and outputting driving condition judgment signals; judging signal output prompt tones according to driving conditions through a loudspeaker.
Description
Technical field
The present invention relates to vehicle electronics field, refer to a kind of driving condition method of inspection especially.
Background technology
The development of automobile not only creates great function to social economy, also brings important impact to the life of the mankind.Automobile become people trip main traffic instrument, its convenience be aircraft, steamer and train incomparable.
China is as newly emerging economy, and become global first automobile consumption state, the vehicle guaranteeding organic quantity of current China has broken through hundred million.
Driving fatigue, refers to that steerman is after long-time continuous driving, produces the imbalance of physiological function and mental function, and is objectively occurring the phenomenon that driving quality declines.Steerman poor sleeping quality or deficiency, easily there is fatigue in long-duration driving vehicle.Driving fatigue can have influence on the attention of steerman, sensation, consciousness, thinking, judgement, will, the aspects such as decision and motion.
According to investigations, in current especially big traffic injuries and deaths accident, that drives to cause due to fatigue accounts for 40%, constitutes serious threat to traffic safety.
When steering vehicle is run at high speed, the attention of steerman is very concentrated, is in highly nervous state all the time, and along with the prolongation with driving time that improves constantly of speed, steerman can engender tired sensation.Travel on a highway, road environment is single, and Coherent traffic noise is few, velocity-stabilization, and the noise and vibration frequency in driving is little, easily makes steerman produce dullness and feels and sleepy drowsiness, occur " express highway hypnosis phenomenon ".As can be seen here, steering vehicle is run at high speed, and easily causes driving fatigue.
How to prevent the fatigue driving state of chaufeur in the driving conditions of expressway, reducing the chance of injury of chaufeur and passenger in traffic accident, is current problem demanding prompt solution.
Summary of the invention
For solving the problem, the present invention proposes a kind of driving condition method of inspection.
Technical scheme of the present invention is achieved in that
A kind of driving condition method of inspection, comprises the following steps:
Detect car speed by the speed sensor being connected to engine output end, export vehicle velocity signal;
Steering wheel angle is detected, outbound course dish angular signal by the steering wheel angle sensor being connected to steering wheel shaft;
Detect chaufeur gravity by the first pressure sensor be arranged on below driver seat, export the first pressure signal;
Detect chaufeur neck pressure by the second pressure sensor being arranged on driver seat neck location, export the second pressure signal;
By being arranged on the camera shooting chaufeur picture signal on steering position anti-dazzle device;
Described vehicle velocity signal, steering wheel angle signal, the first pressure signal, the second pressure signal and picture signal is received by controller, the first pressure signal, the second pressure signal and picture signal is latched during vehicle launch, when vehicle velocity signal and steering wheel angle signal fall into fatigue driving scope, to sample real-time first pressure signal, the second pressure signal and picture signal, compared with latched value, export driving condition and judge signal;
Judge that signal exports prompt tone by loud speaker according to described driving condition.
The invention has the beneficial effects as follows: Negotiation speed sensor and steering wheel angle sensor detect car speed and vehicle corner, the traffic information that vehicle travels is judged, when controller judges vehicle velocity signal and steering wheel angle signal falls into fatigue driving scope, to sample real-time first pressure signal, the second pressure signal and picture signal, compared with latched value, further the driving condition of chaufeur is judged, export prompt tone by loud speaker, remind chaufeur to stop and have a rest.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the diagram of circuit of a kind of driving condition method of inspection of the present invention.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
When steering vehicle is run at high speed, the attention of steerman is very concentrated, is in highly nervous state all the time, and along with the prolongation with driving time that improves constantly of speed, steerman can engender tired sensation.Travel on a highway, road environment is single, and Coherent traffic noise is few, velocity-stabilization, and the noise and vibration frequency in driving is little, easily makes steerman produce dullness and feels and sleepy drowsiness, occur " express highway hypnosis phenomenon ".
Negotiation speed sensor of the present invention and steering wheel angle sensor detect car speed and vehicle corner, the traffic information that vehicle travels is judged, when controller judges vehicle velocity signal and steering wheel angle signal falls into fatigue driving scope, to sample a real-time pressure signal, the second pressure signal and picture signal, compared with latched value, further the driving condition of chaufeur is judged, export prompt tone by loud speaker, remind chaufeur to stop and have a rest.
As shown in Figure 1, a kind of driving condition method of inspection, comprises the following steps:
Detect car speed by the speed sensor being connected to engine output end, export vehicle velocity signal;
Steering wheel angle is detected, outbound course dish angular signal by the steering wheel angle sensor being connected to steering wheel shaft;
Detect chaufeur gravity by the first pressure sensor be arranged on below driver seat, export the first pressure signal;
Detect chaufeur neck pressure by the second pressure sensor being arranged on driver seat neck location, export the second pressure signal;
By being arranged on the camera shooting chaufeur picture signal on steering position anti-dazzle device;
Described vehicle velocity signal, steering wheel angle signal, the first pressure signal, the second pressure signal and picture signal is received by controller, the first pressure signal, the second pressure signal and picture signal is latched during vehicle launch, when vehicle velocity signal and steering wheel angle signal fall into fatigue driving scope, to sample real-time first pressure signal, the second pressure signal and picture signal, compared with latched value, export driving condition and judge signal;
Judge that signal exports prompt tone by loud speaker according to described driving condition.
Vehicle velocity signal and steering wheel angle signal can reflect driving road conditions, and such as, when travelling in expressway, road environment is single, and Coherent traffic noise is few, velocity-stabilization, direction stablize, vehicle velocity signal and steering wheel angle signal intensity very little.Controller judges that vehicle velocity signal and steering wheel angle signal fall into the time of fatigue driving scope, when reaching the schedule time, real-time sampling is carried out to the first pressure signal, the second pressure signal and picture signal, judge whether navigating mate condition now loosens by the first pressure signal and the second pressure signal, judge whether navigating mate is in doze state by picture signal.When judging that chaufeur is in fatigue driving state by above-mentioned test, loud speaker sends prompt tone.
Preferably, above-mentioned controller is dsp processor.
Above-mentioned dsp processor can be TMS320F2812DSP, and be 32 fixed DSPs, it has the AD data acquisition of EVA, EVB task manager and supporting 12 16 passages, has abundant Peripheral Interface, as CAN, SCI etc.The ADC module of TMS320F2812 is 12 bit resolutions, has the A and D converter of pipeline organization, the built-in dual-sampling hold circuit of TMS320F2812, and when keeping data acquisition, window has and independently calibrates control in advance.And allow method to same Channel-shifted repeatedly, allow user to perform over-sampling algorithm, this more traditional single transformation result adds more solution, is conducive to the precision improving sampling.There is multiple trigger source can start ADC conversion.Fast speed transfer time, ADC clock can be configured to 25MHz, and the highest sampling bandwidth is 12.5MSPS.
When building collecting method with TMS320F2812, need not external ADC, avoid complicated hardware design.
Negotiation speed sensor of the present invention and steering wheel angle sensor detect car speed and vehicle corner, the traffic information that vehicle travels is judged, when controller judges vehicle velocity signal and steering wheel angle signal falls into fatigue driving scope, to sample real-time first pressure signal, the second pressure signal and picture signal, compared with latched value, further the driving condition of chaufeur is judged, export prompt tone by loud speaker, remind chaufeur to stop and have a rest.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (1)
1. a driving condition method of inspection, is characterized in that, comprises the following steps:
Detect car speed by the speed sensor being connected to engine output end, export vehicle velocity signal;
Steering wheel angle is detected, outbound course dish angular signal by the steering wheel angle sensor being connected to steering wheel shaft;
Detect chaufeur gravity by the first pressure sensor be arranged on below driver seat, export the first pressure signal;
Detect chaufeur neck pressure by the second pressure sensor being arranged on driver seat neck location, export the second pressure signal;
By being arranged on the camera shooting chaufeur picture signal on steering position anti-dazzle device;
Described vehicle velocity signal, steering wheel angle signal, the first pressure signal, the second pressure signal and picture signal is received by controller, the first pressure signal, the second pressure signal and picture signal is latched during vehicle launch, when vehicle velocity signal and steering wheel angle signal fall into fatigue driving scope, to sample real-time first pressure signal, the second pressure signal and picture signal, compared with latched value, export driving condition and judge signal;
Judge that signal exports prompt tone by loud speaker according to described driving condition.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310714337.4A CN104723952A (en) | 2013-12-20 | 2013-12-20 | Driving condition detection method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310714337.4A CN104723952A (en) | 2013-12-20 | 2013-12-20 | Driving condition detection method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104723952A true CN104723952A (en) | 2015-06-24 |
Family
ID=53448570
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310714337.4A Pending CN104723952A (en) | 2013-12-20 | 2013-12-20 | Driving condition detection method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104723952A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109353252A (en) * | 2018-12-06 | 2019-02-19 | 吉林大学 | A kind of Intelligent automobile seat device and methods for using them known with body pressure sensitivity |
| US11107364B2 (en) | 2018-04-16 | 2021-08-31 | Formula Square Holdings Ltd | Method to enhance first-person-view experience |
-
2013
- 2013-12-20 CN CN201310714337.4A patent/CN104723952A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11107364B2 (en) | 2018-04-16 | 2021-08-31 | Formula Square Holdings Ltd | Method to enhance first-person-view experience |
| CN109353252A (en) * | 2018-12-06 | 2019-02-19 | 吉林大学 | A kind of Intelligent automobile seat device and methods for using them known with body pressure sensitivity |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204895390U (en) | Driver discerns management system | |
| CN103738239A (en) | Driving state detection system | |
| CN105205990B (en) | The early warning system and method for early warning of driver tired driving based on intelligent watch | |
| CN104723952A (en) | Driving condition detection method | |
| CN104732725A (en) | Fatigue driving detector | |
| CN202686330U (en) | Antifatigue driving system of car | |
| CN103729966A (en) | Driving posture detecting device | |
| CN207190915U (en) | Haze weather automotive safety travel system based on radio sensing network | |
| CN110126697A (en) | A kind of seat alarm set for intelligent vehicle | |
| CN105448042A (en) | Fatigue driving detection method | |
| CN104723951A (en) | Driving state monitoring method | |
| CN202454040U (en) | Anti-sleep reminding device for car | |
| CN202994476U (en) | Comprehensive performance real-time detection and prompt system of automobile | |
| CN103723076A (en) | Driving seat | |
| CN104723917A (en) | Method for controlling vibration of driving seat | |
| CN104723950A (en) | Driving state monitoring device | |
| CN104723955A (en) | Vibrating seat | |
| CN104732724A (en) | Driving posture detection method | |
| CN104723958A (en) | Driving safety monitoring method | |
| CN104724002A (en) | Vibrating seat control method | |
| CN203427710U (en) | Automobile anti-fatigue driving device | |
| CN104723959A (en) | Driving prompt system | |
| CN103707839A (en) | Vehicle rollover protecting method | |
| CN202350999U (en) | In-vehicle vibration detection device | |
| CN202703295U (en) | Electric vehicle and intelligent abnormity handling system thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150624 |
|
| WD01 | Invention patent application deemed withdrawn after publication |