CN106394173A - Hot imaging processing-based automotive air conditioning control system - Google Patents
Hot imaging processing-based automotive air conditioning control system Download PDFInfo
- Publication number
- CN106394173A CN106394173A CN201610851627.7A CN201610851627A CN106394173A CN 106394173 A CN106394173 A CN 106394173A CN 201610851627 A CN201610851627 A CN 201610851627A CN 106394173 A CN106394173 A CN 106394173A
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- Prior art keywords
- air
- passenger
- temperature
- passengers
- air conditioning
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H1/00—Heating, cooling or ventilating [HVAC] devices
- B60H1/00642—Control systems or circuits; Control members or indication devices for heating, cooling or ventilating devices
- B60H1/00735—Control systems or circuits characterised by their input, i.e. by the detection, measurement or calculation of particular conditions, e.g. signal treatment, dynamic models
- B60H1/00742—Control systems or circuits characterised by their input, i.e. by the detection, measurement or calculation of particular conditions, e.g. signal treatment, dynamic models by detection of the vehicle occupants' presence; by detection of conditions relating to the body of occupants, e.g. using radiant heat detectors
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H1/00—Heating, cooling or ventilating [HVAC] devices
- B60H1/00642—Control systems or circuits; Control members or indication devices for heating, cooling or ventilating devices
- B60H1/00814—Control systems or circuits characterised by their output, for controlling particular components of the heating, cooling or ventilating installation
- B60H1/00821—Control systems or circuits characterised by their output, for controlling particular components of the heating, cooling or ventilating installation the components being ventilating, air admitting or air distributing devices
- B60H1/00835—Damper doors, e.g. position control
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H1/00—Heating, cooling or ventilating [HVAC] devices
- B60H1/00642—Control systems or circuits; Control members or indication devices for heating, cooling or ventilating devices
- B60H1/00814—Control systems or circuits characterised by their output, for controlling particular components of the heating, cooling or ventilating installation
- B60H1/00878—Control systems or circuits characterised by their output, for controlling particular components of the heating, cooling or ventilating installation the components being temperature regulating devices
- B60H1/00892—Devices specially adapted for avoiding uncomfortable feeling, e.g. sudden temperature changes
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- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Air-Conditioning For Vehicles (AREA)
Abstract
The invention relates to a hot imaging processing-based automotive air conditioning control system. The system is realized through the following steps of: additionally arranging an infrared camera in an automobile to acquire temperature profiles of the upper parts of passengers; detecting and calculating the current face surface area temperatures of the passengers through an image processor; comparing the current face surface area temperatures with a built-in temperature value, and increasing or decreasing the refrigerant amount in the air conditioning pipelines of the automotive air conditioning system through an optimizing control execution mechanism of an electronic control unit according to the comparison analysis result, so as to automatically adjust the support air rate and make the passengers feel comfortable. According to the system provided by the invention, the aim of reducing the oil consumption can be realized; and under the condition of keeping the original structure unchanged, the infrared camera is additionally arranged to acquire the temperature profiles of the upper parts of the passengers, the current face surface area temperatures of the passengers are detected and calculated by means of an image processing technology, the current face surface area temperatures are compared with the built-in temperature value, and the refrigerant amount in the air conditioning pipelines is increased or decreased through the comparison analysis result so as to automatically adjust the supply air rate, so that the passengers can feel comfortable.
Description
Technical field
The present invention relates to a kind of automotive air-conditioning system, especially a kind of automobile air conditioner control system.
Background technology
Automobile air adjusting means abbreviation air conditioning for automobiles.For the temperature in automobile bodies, humidity, air cleanliness and
Air flow adjusts and controls in optimum state, provides comfortable environment of taking for occupant, reduces journey fatigue；For driver's wound
Make good condition of work, to the ventilation unit guaranteeing that safe driving plays an important role.Generally comprise refrigerating plant, heating dress
Put and compound ventilation air-changing device.This combined unit takes full advantage of the limited space of automotive interior, and structure is simple, is easy to operate,
It is modern cars air-conditioning system popular in the world.
Air conditioning for automobiles typically mainly by compressor, electric control clutch, condenser, evaporimeter, expansion valve, drier receiver,
Pipeline, condenser fan, vacuum solenoid, idling device and control system etc. form.Air conditioning for automobiles divides pressure duct and low pressure line.
High-pressure side includes compressor outlet side, pressure duct, condenser, drier receiver and liquid line；Low-pressure side include evaporimeter,
Integrator, return line, compressor input side and compressor oil pond.
Wherein compressor is the core of whole air-conditioning system, and its operation principle is also very simple, when startup air conditioning for automobiles system
After system, compressor is started working under driven by engine, and (R134a, a kind of environment friendly refrigerating fluid will not break to order about cold-producing medium
Bad ozone layer, nontoxicity, non-stimulated, do not burn, non-corrosiveness) circulate in the air-conditioning system of sealing, compressor is by gas
State refrigerant compression discharges compressor after becoming the refrigerant gas of HTHP.The gaseous refrigerant of low-temp low-pressure is pressed by the road
Contracting machine sucks, and is compressed, and enters next circulation, as long as compressor continuously works, cold-producing medium is just continuous within air-conditioning systems
Circulation, produces refrigeration；Compressor quits work, and air-conditioning system inner refrigerant stops flowing therewith, does not produce refrigeration.
Compressor is to provide power by engine, so certainly influencing whether oil consumption.
Automatic air condition on the market is to set a comfort temperature according to current season at present, and constantly collecting vehicle interior temperature
Degree, feeds back to control end, makes vehicle interior temperature be always held at this temperature.This is strictly an all well and good idea, even in
At a temperature of human comfort, some people or sensible heat or feel cold, especially when certain passenger sleep soundly after, because human body entrance is stopped
Dormancy state, the operating rate of some organs slows down, and the speed of blood flow also slows down, and the temperature of human body will be with blood flow
The slowing down of speed, heat recharge rate slows down and reduces, and at this moment air-conditioning can accordingly be heightened temperature or reduce air quantity grade, or
From outdoor into the car just, in a few minutes or awfully hot starting, this passenger needs fast-refrigerating to certain passenger, at this moment air-conditioning
Refrigerating capacity can be increased or improve air quantity grade.Currently the majority air-conditioning is all two warm areas, you can to adjust about in-car
Two region air outlet temperatures are allowed to different, but the front and rear row temperature in each region is the same.
Content of the invention
The present invention is to provide for a kind of automobile air conditioner control system based on thermal imaging process, for the purpose of reducing oil consumption,
In the case that original structure is constant, install thermal camera additional, gather passenger's upper part of the body temperature profile, then rely at image
Reason technology, detection calculates passenger's current face surface region temperature, compares with built-in temperature value, by comparing analysis result
Come in optimal control air-conditioning duct add and subtract cold-producing medium amount with automatically adjust intake so that the passenger on each seat feels
Comfortable.
For achieving the above object, the technical scheme is that：A kind of air conditioning for automobiles based on thermal imaging process controls system
System, including automotive air-conditioning system, electronic control unit, executing agency, installs thermal camera additional, for gathering passenger in automobile
Half body temperature profile, then pass through image processor, detection calculates passenger's current face surface region temperature, with built-in temperature value
Compare, and comparison analysis result to be added and subtracted the sky of automotive air-conditioning system through electronic control unit optimal control executing agency
Adjust the refrigerant amount in pipeline and automatically adjust intake, so that the passenger on each seat feels comfortably cool.
It is respectively arranged with a pressure sensor under each passenger seat, pressure sensor after passenger sits on the seat in automobile
Output activation signal thermal camera.
Described executing agency includes motor, wind deflector, and two wind deflectors are separately mounted to the defeated air port of automotive air-conditioning system
On pipeline, wind deflector connects motor, rotates position in pipeline for the wind deflector by motor, to change going out in front and back of same warm area
Draught temperature and air quantity grade.
The invention has the beneficial effects as follows：The present invention enables to reduce the purpose of oil consumption, in the situation that original structure is constant
Under, install thermal camera additional, by gathering passenger's upper part of the body temperature profile, then rely on image processing techniques, detection calculates to be taken advantage of
Objective current face surface region temperature, is compared with built-in temperature value, by comparing analysis result come optimal control air-conditioner pipe
In road add and subtract cold-producing medium amount with automatically adjust intake so that the passenger on each seat feels comfortably cool.
Brief description
Fig. 1 is the automobile air conditioner control system figure being processed based on thermal imaging of the present invention；
Fig. 2 is personage's gray level image；
Fig. 3 is the image after personage's binaryzation；
Fig. 4 is with ordinate for horizontal direction gray value sum, and abscissa is the curve map of line number；
Fig. 5 is the face area gray value sum curve map being intercepted with behavior abscissa；
Fig. 6 is with ordinate for vertical direction gray value sum, and abscissa is the curve map of columns；；
Fig. 7 is to arrange the face area gray value sum curve map intercepting for abscissa.
Specific embodiment
The invention will be further described with embodiment below in conjunction with the accompanying drawings.
As shown in figure 1, a kind of automobile air conditioner control system based on thermal imaging process, including automotive air-conditioning system, electronics
Control unit, executing agency, pressure sensor etc..Install thermal camera in automobile additional, divide for gathering passenger's upper part of the body temperature
Butut, then pass through image processor, detection is calculated passenger's current face surface region temperature, is compared with built-in temperature value,
And to add and subtract comparing analysis result in the air-conditioning duct of automotive air-conditioning system through electronic control unit optimal control executing agency
Refrigerant amount and automatically adjust intake, so that the passenger on each seat feels comfortably cool.Each passenger seat in automobile
It is respectively arranged with a pressure sensor, pressure sensor output activation signal thermal camera after passenger sits on the seat under chair.
Executing agency includes motor, wind deflector.Respectively add two wind deflectors in the defeated air port in left and right two region pipeline, be divided into
Wind deflector and lower wind deflector, rotate position in pipeline for the wind deflector, thus it is possible to vary before and after same warm area air outlet temperature with
Air quantity grade is different, thus can make each respective temperature of seat demand and air quantity grade, so that each passenger
Feel comfortably cool.
Thermal camera is to be divided using the infrared energy that Infrared Detectors and optical imagery object lens accept measured target
Cloth figure reflects on the light-sensitive element of Infrared Detectors, thus obtaining Infrared Thermogram, this thermography and body surface
Heat distribution field is corresponding.Generally thermal camera is exactly that the invisible infrared energy sending object is changed into visible heat
Image.Different colours above thermal image represent the different temperatures of testee.
The temperature on passenger surface is so judgement, when automotive ignition and when starting air-conditioning, according to occupant set temperature first
Refrigeration, after five minutes, has a pressure sensor under each passenger seat, when the pressure sensor output letter under corresponding seat
Number when, that is, represent and have object to press on seat, then system activation thermal camera, the image on collection corresponding seat is simultaneously carried out
Analysis, after analysis contrast, can determine whether on seat pressure according to temperature value is people rather than other no vital signs objects, then
It is adjusted respective regions refrigerating capacity according to human surface temperature to export with air quantity, make passenger reach comfort conditions.Infrared photography
The invisible energy conversion that object is sent by machine is visible thermal image, and above thermal image, different colors represents the difference of object
Temperature.The picture having gathered is sent to image processor and processes.The thermal image that collection is first come by image processor first enters respectively
Row binaryzation（Fig. 3）With gray processing（Fig. 2）, because face regional temperature is apparently higher than environment temperature, set in binarization
Fixed corresponding threshold value, you can distinguish personage and background, personage is white, and background is in black, image gray processing（Fig. 2）Afterwards
Obtain the gray value of view picture each pixel of figure it is evident that human face region gray value is larger, by the pixel of each row in program
Gray value be added（Fig. 6,7）, and to arrange as abscissa, gray value on row and make X-Y scheme for ordinate（Fig. 6）, take song
Maximum point in line, more a part of region about maximum, in the same manner, the gray value of the pixel in every a line are taken with empirical value
So operate（Fig. 4,5）, now can substantially be partitioned into the pixel gray level Distribution value in character facial region, then make average,
Face area scope can substantially be represented after the region overlap that two extract.Again the pixel gray value on this region is made
Averagely, the gray value of gained is then converted to temperature value, you can reflect passenger's current facial surface temperature accordingly, if temperature
It is worth too high, ECU（Electronic control unit）Control signal is issued each executing agency, executing agency just increase and decrease cold-producing medium amount and
Automatically adjust the air quantity grade of corresponding air outlet, to be rapidly achieved refrigeration or to keep Current Temperatures, so that passenger's sense
To comfortable, and go to adjust intake manually without passenger oneself and change temperature value.
Control process, when vehicle interior temperature has reached this season human comfort's temperature, thermal camera is often after a while
Gather passenger's current face region thermal image, when analysis contrasts relevant temperature, if former and later two people are in same warm area
Hotter, it is possible to decrease temperature, increase air quantity grade, to reach preferable refrigeration, after a period of time, gather passenger's thermal map again
Picture, finds in comfort zone after analysis contrast, you can reduce air quantity grade, and properly increases temperature with stable in this season
Human comfort's temperature range, if passenger one feels comfortably cool before and after same warm area, feels heat, if front passenger is felt for one
Heat, increases air quantity grade and suitably reduces temperature, and motor rotates lower wind deflector, is allowed to upwarp, and the most of air quantity of guiding enters
Enter front-seat air outlet, reduce front-seat regional temperature, fraction air quantity enters heel row air outlet, stablizes heel row regional temperature.Equally
, when rear passenger feels heat, controlled motor rotates upper wind deflector, is allowed to push.
Claims (3)
1. a kind of automobile air conditioner control system based on thermal imaging process, including automotive air-conditioning system, electronic control unit, execution
Mechanism it is characterised in that：Install thermal camera in automobile additional, for gathering passenger's upper part of the body temperature profile, then pass through image
Processor, detection calculates passenger's current face surface region temperature, compares with built-in temperature value, and will compare analysis result
Through electronic control unit optimal control executing agency to add and subtract refrigerant amount in the air-conditioning duct of automotive air-conditioning system and from
Dynamic regulation intake, so that the passenger on each seat feels comfortably cool.
2. the automobile air conditioner control system based on thermal imaging process according to claim 1 it is characterised in that：Every in automobile
It is respectively arranged with a pressure sensor, pressure sensor output activation signal is infrared after passenger sits on the seat under individual passenger seat
Video camera.
3. the automobile air conditioner control system based on thermal imaging process according to claim 1 it is characterised in that：Described execution
Mechanism includes motor, wind deflector, and two wind deflectors are separately mounted on the defeated air port pipeline of automotive air-conditioning system, and wind deflector connects
Motor, rotates position in pipeline for the wind deflector by motor, to change the air outlet temperature and air quantity etc. in front and back of same warm area
Level.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610851627.7A CN106394173A (en) | 2016-09-26 | 2016-09-26 | Hot imaging processing-based automotive air conditioning control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610851627.7A CN106394173A (en) | 2016-09-26 | 2016-09-26 | Hot imaging processing-based automotive air conditioning control system |
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| Publication Number | Publication Date |
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| CN106394173A true CN106394173A (en) | 2017-02-15 |
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| CN201610851627.7A Pending CN106394173A (en) | 2016-09-26 | 2016-09-26 | Hot imaging processing-based automotive air conditioning control system |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108819654A (en) * | 2018-05-08 | 2018-11-16 | 安徽江淮汽车集团股份有限公司 | Intelligent temperature control system and method |
| CN109203907A (en) * | 2017-07-07 | 2019-01-15 | 上汽通用汽车有限公司 | Air conditioning for automobiles and automobile |
| CN109532383A (en) * | 2017-09-22 | 2019-03-29 | 郑州宇通客车股份有限公司 | A kind of on-board air conditioner adjusting method, system and vehicle |
| CN110239304A (en) * | 2018-03-09 | 2019-09-17 | 宝沃汽车（中国）有限公司 | The control method and device of on-board air conditioner |
| CN110936786A (en) * | 2018-09-21 | 2020-03-31 | 联合汽车电子有限公司 | Air control system and method in vehicle |
| WO2020119687A1 (en) * | 2018-12-12 | 2020-06-18 | Ningbo Geely Automobile Research & Development Co., Ltd. | A system and method for estimating climate needs |
| CN112319175A (en) * | 2020-10-22 | 2021-02-05 | 奇瑞汽车股份有限公司 | Automobile active intelligent air conditioner control system and control method thereof, and automobile |
| CN113147325A (en) * | 2021-06-02 | 2021-07-23 | 常州市佳乐车辆配件制造有限公司 | Automobile air conditioner control system with automatic air intake control function |
| CN118024836A (en) * | 2024-04-11 | 2024-05-14 | 成都工业职业技术学院 | Intelligent air cleaning device for vehicle and control method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109203907A (en) * | 2017-07-07 | 2019-01-15 | 上汽通用汽车有限公司 | Air conditioning for automobiles and automobile |
| CN109532383A (en) * | 2017-09-22 | 2019-03-29 | 郑州宇通客车股份有限公司 | A kind of on-board air conditioner adjusting method, system and vehicle |
| CN110239304B (en) * | 2018-03-09 | 2021-05-14 | 宝沃汽车（中国）有限公司 | Control method and device for vehicle-mounted air conditioner |
| CN110239304A (en) * | 2018-03-09 | 2019-09-17 | 宝沃汽车（中国）有限公司 | The control method and device of on-board air conditioner |
| CN108819654A (en) * | 2018-05-08 | 2018-11-16 | 安徽江淮汽车集团股份有限公司 | Intelligent temperature control system and method |
| CN110936786A (en) * | 2018-09-21 | 2020-03-31 | 联合汽车电子有限公司 | Air control system and method in vehicle |
| CN110936786B (en) * | 2018-09-21 | 2023-03-31 | 联合汽车电子有限公司 | Air control system and method in vehicle |
| CN113165471A (en) * | 2018-12-12 | 2021-07-23 | 宁波吉利汽车研究开发有限公司 | System and method for estimating climate demand |
| WO2020119687A1 (en) * | 2018-12-12 | 2020-06-18 | Ningbo Geely Automobile Research & Development Co., Ltd. | A system and method for estimating climate needs |
| US12011970B2 (en) | 2018-12-12 | 2024-06-18 | Ningbo Geely Automobile Research & Dev. Co., Ltd. | System and method for estimating climate needs |
| CN112319175A (en) * | 2020-10-22 | 2021-02-05 | 奇瑞汽车股份有限公司 | Automobile active intelligent air conditioner control system and control method thereof, and automobile |
| CN113147325A (en) * | 2021-06-02 | 2021-07-23 | 常州市佳乐车辆配件制造有限公司 | Automobile air conditioner control system with automatic air intake control function |
| CN118024836A (en) * | 2024-04-11 | 2024-05-14 | 成都工业职业技术学院 | Intelligent air cleaning device for vehicle and control method thereof |
| CN118024836B (en) * | 2024-04-11 | 2024-06-18 | 成都工业职业技术学院 | Intelligent air cleaning device for vehicle and control method thereof |
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Application publication date: 20170215 |