A kind of Driving safety assistant system based on infrared identification
Technical field
The invention belongs to vehicle active safety field, field of intelligent control, more particularly to a kind of driving based on infrared identification
Sail safety assisting system.
Background technology
In modern society, automobile be not merely as transport facility, and more and more turn into the daily life of people
Indispensable life companion living, it is also of common occurrence that temperament and interest activity is carried out in the car, and people is past after temperament and interest activity end
Toward having fatigue, leg is soft, notice not enough collects medium reaction physiologically, and this safe driving operation to driver is unfavorable
's.If whether carrying out temperament and interest activity using conventional image or sound means identification occupant in the car, can exist again and invade
The risk of the privacy of evil vehicle occupant.
The content of the invention
To solve the above problems, the invention provides a kind of Driving safety assistant system, it is used, and not encroach on vehicle occupant hidden
Whether private collecting unit, identification occupant is carrying out temperament and interest activity, and after recognition result is confirmed, formulate the car adapted to
Safety control strategy.
The system includes collecting unit, processing unit and execution unit;
Collecting unit is installed on the infra red thermograph of roof with including neighbouring room mirror, and red for adjusting
The drive mechanism of the shooting angle of outside line thermal imaging system, collecting unit is closed when starting in parking of automobile, driving, for obtaining car
Interior thermal imaging picture, thermal imaging picture is the Temperature Distribution picture only with profile, and can not show the appearance of people in picture
Looks, therefore the privacy for the person of being taken can be protected;
Pressure sensor is designed with in-car each seat, the position for determining personnel, drive mechanism is according to personnel
Position adjustment infra red thermograph shooting angle, the scope of thermal imaging picture is concentrated on the position, it is to avoid remaining position
Thermal source interference;
Processing unit receives the thermal imaging picture from collecting unit, first selects in frame out in predetermined temperature range
Region, in-car article is filtered out further according to the size in region, so as to identify the occupant's in thermal imaging picture
Quantity, and record the body temperature and Temperature changing of occupant;
In the case that the quantity of personnel is more than one in the car, when the ascensional range of any one in-car personnel's body temperature exceedes
First threshold or climbing speed exceed Second Threshold, then and then processing unit judges whether the body temperature of other staff also rises,
If so, then processing unit judges that in-car has temperament and interest activity;
Processing unit corrects the size of first, second threshold value according to the working order of on-board air conditioner, during air conditioner refrigerating, refrigeration
Temperature is often less than 1 DEG C of the first standard value, and processing unit turns down first, second threshold value 1%, during air-conditioning heating, heats temperature per high
In 1 DEG C of the second standard value, processing unit heightens first, second threshold value 1%;
The direct stimulation and physical demands brought by in-car temperament and interest activity is larger, if in temperament and interest activity end in short-term
In continue to drive, the mood of driver's excitement is not yet calmed down, and notice can't be in complete set, and would generally feel body
Body fatigue particularly leg is aching and limp, therefore, in the case where processing unit judges that in-car has temperament and interest activity, is opened in thermal imaging system
In predetermined amount of time after dynamic, if any personnel in thermal imaging picture are sitting in/returned to the concurrent motor-car of operator seat and prepare to drive,
Then execution unit carries out vehicle safety control, reduces the sensitivity of gas pedal and/or increases the sensitivity of brake pedal, works as row
Active reduction of speed when sailing speed more than 50 kilometers per hour.
The present invention using not encroaching on the collecting unit of vehicle occupant's privacy, for fatigue of the people after temperament and interest activity end,
Leg is soft, notice not enough collects the auxiliary operation that medium physiological reaction makes driving safety, that is, the security for improving driving is protected again
The privacy of occupant is protected.
Brief description of the drawings
Fig. 1 shows the system architecture schematic diagram of the application;
Fig. 2 shows the system control process of the application.
Embodiment
With reference to the accompanying drawings, the structure of the system and the function of being realized is described in detail.
As shown in figure 1, Driving safety assistant system includes collecting unit 1, processing unit 2 and execution unit 3, collecting unit
1 is installed on the infra red thermograph 1.1 of roof with including neighbouring room mirror, and for adjusting infra red thermograph
The drive mechanism 1.2 of 1.1 shooting angle, collecting unit 1 is closed when starting in parking of automobile, driving, for obtaining in-car
Thermal imaging picture;
Pressure sensor 4 is designed with in-car each seat, the position for determining personnel, the basis of drive mechanism 1.2
The shooting angle of the position adjustment infra red thermograph 1.1 of personnel;
As shown in Fig. 2 processing unit 2 receives the thermal imaging picture from collecting unit 1, first select in frame out in pre-
The region in temperature range (the preferably common body temperature of human body, 35-38 DEG C) is determined, further according to the size mistake in region
Filter in-car article, so as to identify the quantity of the occupant in thermal imaging picture, and record occupant body temperature and
Temperature changing;
In the case that the quantity of personnel is more than one in the car, when the ascensional range of any one in-car personnel's body temperature exceedes
First threshold or climbing speed exceed Second Threshold, then and then processing unit judges whether the body temperature of other staff also rises,
If so, then processing unit judges that in-car has temperament and interest activity;
Processing unit 2 corrects the size of first, second threshold value according to the working order of on-board air conditioner 5, when air-conditioning 5 freezes,
Cryogenic temperature is often less than 1 DEG C of the first standard value, and processing unit 2 turns down first, second threshold value 1%, when air-conditioning 5 is heated, heats temperature
Degree is often higher than 1 DEG C of the second standard value, and processing unit 2 heightens first, second threshold value 1%;
The direct stimulation and physical demands brought by in-car temperament and interest activity is larger, if in temperament and interest activity end in short-term
In continue to drive, the mood of driver's excitement is not yet calmed down, and notice can't be in complete set, and would generally feel body
Body fatigue particularly leg is aching and limp, therefore, in the case where processing unit 2 judges that in-car has temperament and interest activity, in thermal imaging system
In predetermined amount of time after 1.1 startups, if any personnel in thermal imaging picture are sitting in/returned to operator seat, concurrent motor-car prepares
Drive, then execution unit 3 carries out vehicle safety control, including but not limited to reduce sensitivity and/or the increase system of gas pedal
The sensitivity of dynamic pedal, when travel speed more than 50 kilometers per hour when the operation such as active reduction of speed.
One skilled in the art would recognize that without departing substantially from as the spirit and scope of the invention described in general manner,
Various changes and/or modification can be carried out to the invention shown in each specific embodiment.Therefore, in terms of all
For, embodiment here is considered as illustrative and and non-limiting.Equally, the present invention includes any feature
Combination, the combination of any feature especially in Patent right requirement, even if the combination of this feature or feature is not in patent
It is explicitely stated in claim or each embodiment here.