CN116749709A - Passenger cabin cooling and heating method based on human body local heat comfort characteristics and automobile - Google Patents

Passenger cabin cooling and heating method based on human body local heat comfort characteristics and automobile Download PDF

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Publication number
CN116749709A
CN116749709A CN202310657365.0A CN202310657365A CN116749709A CN 116749709 A CN116749709 A CN 116749709A CN 202310657365 A CN202310657365 A CN 202310657365A CN 116749709 A CN116749709 A CN 116749709A
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China
Prior art keywords
thermal comfort
cooling
heating
passenger
temperature
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CN202310657365.0A
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Chinese (zh)
Inventor
陈吉清
李晓婷
兰凤崇
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South China University of Technology SCUT
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South China University of Technology SCUT
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Priority to CN202310657365.0A priority Critical patent/CN116749709A/en
Publication of CN116749709A publication Critical patent/CN116749709A/en
Pending legal-status Critical Current

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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
    • B60H1/0073—Control systems or circuits characterised by particular algorithms or computational models, e.g. fuzzy logic or dynamic models
    • 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
    • B60H1/00735—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
    • B60H1/00807—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 the input being a specific way of measuring or calculating an air or coolant temperature
    • 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
    • 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

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Fuzzy Systems (AREA)
  • Mathematical Physics (AREA)
  • Software Systems (AREA)
  • Theoretical Computer Science (AREA)
  • Air-Conditioning For Vehicles (AREA)

Abstract

The invention provides a passenger cabin cooling and heating method based on a human body local thermal comfort characteristic and an automobile. Belongs to the technical field of automobile development, and solves the problems that the current global ventilation strategy of the passenger cabin has high energy consumption and can not simultaneously meet the thermal comfortableness of passengers in different riding positions and different body parts. The automobile adopting the passenger cabin cooling and heating method based on the human body local thermal comfort characteristics is provided with the corresponding independent air outlets for each riding position according to the cooling and heating thermal comfort key positions, air flows are reasonably organized for the thermal comfort positions, the head and the front chest are cooled or heated through the ceiling and the instrument board air outlets, the hands and the back are cooled or heated through the intelligent steering wheel and the intelligent seats with adjustable temperature, the feet are cooled or heated through the front coamings and the front seat bottoms or the lateral arrangement air outlets, and the thermal comfort of passengers is rapidly improved in a short time.

Description

Passenger cabin cooling and heating method based on human body local heat comfort characteristics and automobile
Technical Field
The invention belongs to the technical field of automobile development, and particularly relates to a passenger cabin cooling and heating method based on local thermal comfort characteristics of a human body and an automobile.
Background
During the driving or parking of a car, the thermal environment in the passenger compartment exhibits significant non-uniform characteristics, and the physiological thermal regulation characteristics of different body parts of the human body and their thermal response to environmental loads are different. In a hotter environment, each local heat sensation is closer and the head and overall sensation is hotter; in a colder environment, skin temperatures of all parts are obviously different, metabolism heat generated by an organism cannot be timely transmitted to a telecentric end part through blood circulation, so that the skin temperature is lower, limbs feel colder, however, the global ventilation strategy adopted by the current passenger cabin thermal environment management is high in energy consumption, and the air temperature and air flow speed distribution in part of a riding space are unreasonable, so that the key technical problem that the thermal comfort of passengers in different riding positions and different body parts cannot be met simultaneously exists.
Disclosure of Invention
In order to solve the problems in the prior art, the invention provides the passenger cabin cooling and heating method based on the local thermal comfort characteristic of the human body and the automobile, which can carry out regional management on the air temperature and the air flow characteristic in the space of different riding positions, respectively meet the thermal comfort of passengers in different riding positions according to the thermal requirements of the passengers, and the climate control range is focused in the space of the passengers, so that the energy consumption can be effectively reduced, and the energy utilization rate can be improved.
The automobile adopting the passenger cabin cooling and heating method based on the human body local thermal comfort characteristics is provided with the corresponding independent air outlets and air returns for each riding position according to the cooling and heating thermal comfort key positions, air flows are reasonably organized aiming at the thermal comfort positions, the head and the front chest are cooled or heated through the ceiling and the instrument board air outlets, the hands and the back are cooled or heated through the intelligent steering wheel and the intelligent seat with adjustable temperature, the feet are cooled or heated through the front coaming and the front seat bottom or the lateral arrangement air outlets, and the thermal comfort of passengers is rapidly improved in a short time.
Further, each seat is provided with a corresponding position sensor, a temperature sensor, a wind speed sensor, a humidity sensor and an infrared heat sensing module, and comprises a control module.
The position sensor is used to acquire the number of occupants (including drivers and passengers) and the seating position.
The temperature sensor is used to acquire the air temperature in the region where the occupant (including the driver and the passenger) is located.
The wind speed sensor is used for acquiring the air flow speed in the position area where the passengers (including the driver and the passengers) are located.
Humidity sensors are used to obtain the relative humidity of the air in the area where the occupants (including the driver and passengers) are located.
The infrared thermal sensing module monitors the skin temperature of a human body or the surface temperature distribution condition of the body part.
The control module has a human body thermal comfort evaluation function and an intelligent calculation function.
And the human body thermal comfort evaluation function evaluates initial thermal sensation indexes and thermal comfort indexes (including an integral thermal sensation index, a local thermal sensation index, an integral thermal comfort index and a local thermal comfort index) of passengers (including drivers and passengers) according to information acquired by the receiving temperature sensor, the wind speed sensor, the humidity sensor and the in-car infrared thermal sensation module, calculates and obtains the air supply temperature and the air supply speed of the air outlet corresponding to the position of the passengers, and the estimated value of the cooling or heating temperature of the intelligent steering wheel and the intelligent seat, and reasonably distributes cooling or heating energy to the position areas of different passengers.
And the intelligent calculation function is used for comparing the thermal sensation index and the thermal comfort index which are manually input by the passengers with the initial thermal sensation index and the thermal comfort index, respectively calculating the air supply temperature and the air supply speed of each air outlet at the positions of the passengers, and optimizing the cooling or heating temperature of the intelligent steering wheel and the seat, and adjusting the air supply temperature and the air supply speed of each air outlet in real time to realize personalized local climate control.
The method comprises the following steps:
s1, acquiring the number of passengers (including drivers and passengers), riding position information and air temperature, airflow speed and surface temperature information of the area where the passengers are located.
S2, starting an automatic operation mode according to the received number of passengers (including drivers and passengers) and the received riding position information, starting an air duct and an air outlet or a cooling/heating switch corresponding to the positions of the passengers (including drivers and passengers), and keeping the air duct and the air outlet or the cooling/heating switch corresponding to the positions of the passengers in a non-riding position closed.
S3, the infrared thermal sensing module monitors the surface temperature of a human body, acquires information of uncomfortable hot or uncomfortable cold parts of passengers at different sitting positions, inputs the information into the control module, evaluates initial thermal sensation indexes and thermal comfort indexes (including integral thermal sensation indexes, local thermal sensation indexes, integral thermal comfort indexes and local thermal comfort indexes) of passengers (including drivers and passengers), calculates and obtains the air supply temperature and air supply speed of an air outlet corresponding to the positions of the passengers, and the pre-estimated value of the cooling or heating temperature of the intelligent steering wheel and the seat, and reasonably distributes cooling or heating energy to the position areas of different passengers.
S4, cooling or heating the human body according to the preset value by the air supply temperature and the air supply speed of the air outlet corresponding to the position of the passenger, and the cooling or heating temperature of the intelligent steering wheel and the intelligent seat.
S5, if the passenger is not satisfied with the cooling or heating effect of the current environment, the thermal sensation index and the thermal comfort index can be manually input, the control module compares the thermal sensation index and the thermal comfort index which are manually input by the passenger with the initial thermal sensation index and the thermal comfort index, and respectively calculates the air supply temperature and the air supply speed of each air outlet at the position of the passenger, the optimized values of the cooling or heating temperature of the intelligent steering wheel and the seat, and adjusts the air supply temperature and the air supply speed of each air outlet and the cooling or heating temperature of the intelligent steering wheel and the intelligent seat in real time, so that the individualized local area climate control of the passenger cabin is realized.
Further, each seat is provided with a corresponding position sensor, a temperature sensor, a wind speed sensor, a humidity sensor and an infrared heat sensing module,
the position sensor is used to acquire the number of occupants (including drivers and passengers) and the seating position.
The temperature sensor is used to acquire the air temperature in the region where the occupant (including the driver and the passenger) is located.
The wind speed sensor is used for acquiring the air flow speed in the position area where the passengers (including the driver and the passengers) are located.
Humidity sensors are used to obtain the relative humidity of the air in the area where the occupants (including the driver and passengers) are located.
The infrared thermal sensing module monitors the skin temperature of a human body or the surface temperature distribution condition of the body part.
Further, the control module has a human body thermal comfort evaluation function and an intelligent calculation function, the human body thermal comfort evaluation function evaluates initial thermal sensation indexes and thermal comfort indexes (including a whole thermal sensation index, a local thermal sensation index, a whole thermal comfort index and a local thermal comfort index) of passengers (including drivers and passengers) according to information collected by the receiving temperature sensor, the wind speed sensor, the humidity sensor and the in-car infrared thermal sensation module, and the intelligent calculation function calculates to obtain the air supply temperature and the air supply speed of the air outlet corresponding to the positions of the passengers, and the estimated values of the cooling or heating temperatures of the intelligent steering wheel and the seats, so that cooling or heating energy is reasonably distributed to the areas where different passengers are located.
Further, the control module controls the ceiling and the instrument board air outlet to cool or heat the head and the front chest, the intelligent steering wheel and the intelligent seat with adjustable temperature cool or heat the hands and the backs, and the front coaming and the front seat bottom or the lateral air outlet are arranged to cool or heat the feet.
The passenger cabin cooling and heating method based on the local thermal comfort characteristic of the human body and the automobile provided by the invention are based on the application of the passenger cabin regional thermal environment management technology, and further consider the thermal response difference, the thermal demand and the thermal preference of different body parts of the human body. The passenger cabin zoned thermal environment management technology is a thermal management mechanism which focuses the climate control range in the space where passengers are located and controls the climate of the passenger cabin in a zoned mode, takes the heat-flow characteristics (namely the temperature distribution and the air flow state) in the microenvironment around the passengers as control objects, and cools or heats the passengers in different riding positions, so that the air flow can be reasonably organized to improve the temperature distribution and the air flow speed in the microenvironment around the human body, and the thermal comfort of the human body is improved. According to the technology, the air temperature and the air flow characteristics in the spaces of different riding positions are managed in a zoning mode, the thermal comfort of passengers in different riding positions is respectively met according to the thermal demands of the passengers, and the climate control range is focused in the space of the position of the passengers, so that energy consumption can be effectively reduced, and the energy utilization rate can be improved.
Compared with the prior art, the invention at least has the following beneficial effects:
1. focusing the climate control range in the space where the passengers are located, carrying out regional control on the climate of the passenger cabin, setting corresponding independent air outlets and air returns for each riding position according to the key parts of cooling and heating thermal comfort, reasonably organizing air flow aiming at the thermal comfort parts, and respectively meeting the thermal comfort of the passengers in different riding positions according to the thermal requirements of the passengers.
2. The climate control range is focused in the space where the passengers are located, and only the positions of the passengers are considered when the energy required for cooling or heating is distributed, and the corresponding air outlets or cooling/heating switches of the unmanned riding area are kept closed, so that the energy consumption can be effectively reduced, and the energy utilization rate can be improved.
3. The passenger cabin cooling and heating method based on the local thermal comfort characteristics of the human body, provided by the invention, is applied to consideration of the thermal response differences and thermal preferences of different body parts of the passenger, the temperature and the air flow speed of air around the passenger are proper, the passenger can not feel supercooled or overheated and obviously uncomfortable blowing feeling, and the thermal comfort of different body parts of the passenger can be met.
Brief description of the drawings
FIG. 1 is a flow chart of a passenger compartment cooling and heating method based on local thermal comfort features of a human body provided by an embodiment of the invention.
FIG. 2 is a schematic diagram of the air outlet or cooling/heating locations of a passenger compartment cooling and heating method based on local thermal comfort features of the human body.
FIG. 3 is a schematic illustration of a passenger compartment zoned thermal environment management provided by the present invention.
Fig. 4 is a schematic diagram of the global ventilation strategy of the automobile, the cabin regional thermal environment management technology and the cabin cooling and heating method based on the local thermal comfort characteristics of the human body.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
As shown in fig. 1, the passenger cabin cooling and heating method based on the local thermal comfort characteristic of the human body provided by the invention comprises the following steps:
step S1, acquiring the number of passengers (including drivers and passengers), riding position information, and air temperature, airflow speed and surface temperature information of the area where the passengers are located.
In some embodiments of the invention, each seat is provided with a corresponding position sensor, a temperature sensor, a wind speed sensor, a humidity sensor and an infrared heat sensing module, wherein the position sensor is used for acquiring the number of passengers (including drivers and passengers) and riding positions; the temperature sensor is used for acquiring the air temperature in the position area where the passengers (including the driver and the passengers) are located; the wind speed sensor is used for acquiring the air flow speed in the position area where the passenger (including the driver and the passenger) is located; the humidity sensor is used for acquiring the relative humidity of the air in the position area where the passengers (including drivers and passengers) are located; the infrared thermal sensing module is used for monitoring the skin temperature of a human body or the surface temperature distribution condition of the body part.
And S2, starting an automatic operation mode by the control module according to the received number of passengers (including drivers and passengers) and the received riding position information, starting an air duct and an air outlet or a cooling/heating switch corresponding to the positions of the passengers (including drivers and passengers), and keeping the air duct and the air outlet or the cooling/heating switch corresponding to the positions of the unmanned riding position closed.
The control module has a human body thermal comfort evaluation function and an intelligent calculation function. In some of the embodiments of the present invention, the human thermal comfort assessment function and the intelligent computing function may be integrated into the control module of the automobile itself.
In some embodiments of the present invention, the human thermal comfort evaluation function evaluates initial thermal sensation indexes and thermal comfort indexes (including a whole thermal sensation index, a partial thermal sensation index, a whole thermal comfort index and a partial thermal comfort index) of passengers (including a driver and passengers) according to information collected by the received temperature sensor, the received wind speed sensor, information collected by the humidity sensor and the information collected by the in-vehicle infrared thermal sensation module, calculates an estimated value of a supply air temperature and a supply air speed of an air outlet corresponding to the position of the passenger, and reasonably distributes cooling or heating energy to the position areas of different passengers. The human body thermal comfort evaluation and intelligent computation adopt the existing computation model, and the evaluation and computation processes are not described in detail herein.
And S3, monitoring the surface temperature of a human body by the infrared heat sensing module, acquiring information of uncomfortable hot or uncomfortable cold parts of passengers at different sitting positions, inputting the information into the control module, evaluating initial heat sensation indexes and heat sensation indexes (including an integral heat sensation index, a local heat sensation index, an integral heat sensation index and a local heat sensation index) of the passengers (including a driver and passengers), calculating to obtain the air supply temperature and air supply speed of an air outlet corresponding to the position of the passengers, and reasonably distributing cooling or heating energy to the position areas of the different passengers by using the intelligent steering wheel and the intelligent seat.
In some embodiments of the invention, the control module controls the ceiling and the instrument panel air outlet to cool or heat the head and the front chest, the intelligent steering wheel and the seat with adjustable temperature are used for cooling or heating the hands and the back, and the air outlet is arranged at the bottom of the front panel and the front seat or laterally, so that the feet are cooled or heated. The intelligent steering wheel and the intelligent seat with the adjustable temperature are all of the prior art, and specific structures and working principles of the intelligent steering wheel and the intelligent seat are not developed and introduced. The method of the invention brings the thermal response differences of different body parts of the human body into the thermal environment management of the passenger cabin through the intelligent steering wheel and the intelligent seat with adjustable temperature.
And S4, cooling or heating the human body according to the preset value cooling or heating temperature by the intelligent steering wheel and the seat with the adjustable temperature, wherein the position of the passenger corresponds to the air supply temperature and the air supply speed of the air outlet.
And S5, if the passenger is not satisfied with the cooling or heating effect of the current environment, the thermal sensation index and the thermal comfort index can be manually input, the control module compares the thermal sensation index and the thermal comfort index which are manually input by the passenger with the initial thermal sensation index and the thermal comfort index, respectively calculates the air supply temperature and the air supply speed of each air outlet at the position of the passenger, and the optimized values of the cooling or heating temperature of the intelligent steering wheel and the seat (the optimized values are obtained by adopting the optimized iterative algorithm in the prior art, and detailed description is not given here in the specific calculation process), and adjusts the air supply temperature and the air supply speed of each air outlet, and the cooling or heating temperature of the intelligent steering wheel and the seat in real time so as to realize individualized local area climate control.
The invention considers the thermal response difference, the thermal demand and the thermal preference of different body parts of a human body, wherein the target cooling thermal comfort key parts are the head, the hand, the chest and the back, and the target heating thermal comfort key parts are the head, the hand, the foot, the chest and the back. In some embodiments of the invention, the head prefers air with slightly cool temperature, and when the air flow temperature is 24-28 ℃ and the air flow speed is 0.6-1.4 m/s, the head cooling effect has obvious influence on the overall heat sensation of the human body, and the improvement effect of the heat comfort of the human body is better.
In some embodiments of the present invention, fig. 2 is a schematic diagram of an air outlet or cooling/heating position of a passenger cabin cooling and heating method based on a local thermal comfort feature of a human body, wherein a corresponding independent air outlet and an air return opening are arranged for each sitting position around the target cooling and heating comfort critical parts (head, hand, chest and back) and the target heating comfort critical parts (head, hand, foot, chest and back) of the above human body cooling and heating comfort parts, tissue airflow flows around the human body, an air outlet is arranged on a ceiling to realize cooling or heating of the head and the chest, and an air outlet is arranged on the bottom or side of a front panel and a front seat to realize cooling or heating of the foot through an intelligent steering wheel and an intelligent seat with adjustable temperature. And the independent air return openings can be designed for different riding positions, so that tissue air flows around the human body.
In some embodiments of the present invention, there is also provided an automobile carrying the method provided in the foregoing embodiments, by which thermal comfort of occupants in different seating positions can be respectively satisfied according to thermal demands of the occupants in the automobile.
The global ventilation strategy of the automobile takes the climate of the whole passenger cabin as a control object, the whole passenger cabin is cooled or heated, the air temperature and the air flow speed in part of the riding space are distributed unreasonably, the requirements of passengers on the air temperature and the air flow speed are not considered, certain local body parts of the passengers often feel supercooled or overheated, and the thermal comfort of the passengers in different riding positions and different body parts of the passengers is difficult to realize. In addition, in order to make the thermal environment of the passenger cabin meet the thermal comfort of passengers in a short time, the air-conditioning system of the automobile has low air supply temperature in summer and high air supply temperature in winter, and has high air supply speed, a large amount of energy sources are required to be consumed to achieve the purpose of reducing or raising the overall temperature of the passenger cabin, and for the condition of less non-full load of a driver or passengers, part of air flow is sent to an unmanned riding area, so that the cooling or heating speed of the space nearby the driver or passengers is slowed down, and part of energy sources are not effectively utilized. In view of the above, the present invention proposes the concept of a cabin zoned thermal environment management technology, which is an effective balance method for saving energy and satisfying the thermal comfort of passengers. As shown in fig. 3, the cabin zoned thermal environment management technology refers to a thermal management mechanism that focuses the climate control range in the space where the passengers are located and controls the climate of the passenger cabin in a zoned manner, takes the "heat-flow" characteristics (i.e., temperature distribution and air flow state) in the microenvironment around the passengers as control objects, cools or heats the passengers in different sitting positions, and improves the temperature distribution and air flow speed in the microenvironment around the human body by reasonably organizing the air flow, thereby improving the thermal comfort of the human body. According to the technology, the air temperature and the air flow characteristics in the spaces of different riding positions are managed in a zoning mode, the thermal comfort of passengers in different riding positions is respectively met according to the thermal demands of the passengers, and the climate control range is focused in the space of the position of the passengers, so that energy consumption can be effectively reduced, and the energy utilization rate can be improved. If the regional thermal environment management technology of the passenger cabin is only used for regional control of the climate of the passenger cabin, the ventilation target range is focused on the space where the passenger is located, but the thermal requirements of all the body parts of the human body are not focused, and although the air flow state around the passenger can be improved to a certain extent, the phenomenon that some local body parts of the passenger feel supercooled or overheated can still occur, and the thermal comfort of different body parts of the passenger cannot be simultaneously met. Therefore, considering that the thermal response difference of different body parts of the automobile passengers has great significance on the influence of the thermal comfort, on the basis of providing a passenger cabin regional thermal environment management technology, a passenger cabin cooling and heating method based on the local thermal comfort characteristic of a human body is further provided, and the relation between the technology and the above-mentioned global ventilation strategy of the automobile and the passenger cabin regional thermal environment management technology is summarized as shown in fig. 4. The comprehensive influence of the non-uniform heat-flow characteristic of the passenger cabin and the physiological heat characteristic of the passenger on the thermal comfort of the passenger is fully considered, the air flow is organized according to the thermal comfort key parts of the human body to carry out local cooling or local heating, and the thermal comfort of the passenger is rapidly improved in a short time.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (10)

1. The passenger cabin cooling and heating method based on the local thermal comfort characteristic of the human body is characterized by comprising the following steps of:
acquiring the number of passengers, riding position information and air temperature, air flow speed and surface temperature information of the area where the passengers are located;
when the control module receives the information of the number of passengers and the riding position, the control module controls and opens an air duct, an air outlet or a temperature control switch which are arranged corresponding to the position of the passengers;
the method comprises the steps of monitoring the surface temperature of a human body of an occupant in real time, acquiring information of uncomfortable hot or uncomfortable cold parts of the occupant at different riding positions, transmitting the information to a control module, evaluating initial thermal sensation indexes and thermal comfort indexes of the occupants by the control module, and calculating to obtain the air supply temperature and air supply speed of an air outlet corresponding to the position of the occupant, and the estimated values of the cooling or heating temperatures of an intelligent steering wheel and an intelligent seat;
the control module controls the air supply temperature and the air supply speed of the air outlet corresponding to the position of the passenger according to the predicted value, and the intelligent steering wheel and the seat are cooled or heated to cool or heat the human body.
2. The passenger cabin cooling and heating method based on the local thermal comfort feature of the human body according to claim 1, wherein a corresponding position sensor, a temperature sensor, a wind speed sensor, a humidity sensor and an infrared thermal sensing module are arranged on each seat, and the position sensor is used for acquiring the number of passengers and the riding position; the temperature sensor is used for acquiring the air temperature in the area where the passenger is located; the wind speed sensor is used for acquiring the air flow speed in the position area of the passenger; the humidity sensor is used for acquiring the relative humidity of the air in the position area where the passenger is located; the infrared thermal sensing module is used for monitoring the skin temperature of a human body or the surface temperature distribution condition of the body part.
3. The method of cooling and heating a passenger compartment based on localized thermal comfort features of claim 1, wherein the passenger comprises a driver and a passenger.
4. The passenger compartment cooling and heating method based on the local thermal comfort feature of the human body according to claim 1, wherein an independent air outlet and an independent air return are provided at each seating position to heat or cool a target heating thermal comfort critical portion or a target heating thermal comfort critical portion of each passenger at each seating position.
5. The method for cooling and heating a passenger compartment based on local thermal comfort features of claim 4, wherein the target heating thermal comfort critical portion or the target thermal comfort critical portion comprises a head, a hand, a foot, a chest and a back.
6. The method for cooling and heating a passenger compartment based on local thermal comfort features of a human body according to claim 5, wherein the cooling or heating of the head and the front chest is achieved through a ceiling and an instrument panel air outlet, the cooling or heating of the feet is achieved through a front panel and a front seat bottom or a laterally arranged air outlet, and the cooling or heating is achieved through the back of an intelligent seat passenger with adjustable temperature.
7. The method for cooling and heating a passenger compartment based on local thermal comfort features of claim 6, wherein the driver can also cool or heat his/her hands through an intelligent steering wheel with adjustable temperature.
8. The method for cooling and heating a passenger compartment based on local thermal comfort features of a human body according to claim 1, wherein the thermal sensation index and the thermal comfort index include an overall thermal sensation index, a local thermal sensation index, an overall thermal comfort index, and a local thermal comfort index.
9. The passenger compartment cooling and heating method based on the local thermal comfort feature of the human body according to any one of claims 1 to 8, wherein if the passenger is not satisfied with the cooling or heating effect of the current environment, the thermal sensation index and the thermal comfort index can be manually inputted, the control module compares the thermal sensation index and the thermal comfort index manually inputted by the passenger with the initial thermal sensation index and the thermal comfort index, calculates the optimized values of the air supply temperature and the air supply speed of each air outlet, the intelligent steering wheel and the intelligent seat cooling or heating temperature of each air outlet, and adjusts the air supply temperature and the air supply speed of each air outlet, the intelligent steering wheel and the intelligent seat cooling or heating temperature in real time.
10. An automobile, characterized in that the automobile is provided with a method according to any one of claims 1-9.
CN202310657365.0A 2023-06-05 2023-06-05 Passenger cabin cooling and heating method based on human body local heat comfort characteristics and automobile Pending CN116749709A (en)

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Application Number Priority Date Filing Date Title
CN202310657365.0A CN116749709A (en) 2023-06-05 2023-06-05 Passenger cabin cooling and heating method based on human body local heat comfort characteristics and automobile

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Application Number Priority Date Filing Date Title
CN202310657365.0A CN116749709A (en) 2023-06-05 2023-06-05 Passenger cabin cooling and heating method based on human body local heat comfort characteristics and automobile

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CN116749709A true CN116749709A (en) 2023-09-15

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