CN111845247A - Vehicle-mounted air conditioner control system and vehicle-mounted air conditioner control method - Google Patents
Vehicle-mounted air conditioner control system and vehicle-mounted air conditioner control method Download PDFInfo
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- CN111845247A CN111845247A CN201910365195.2A CN201910365195A CN111845247A CN 111845247 A CN111845247 A CN 111845247A CN 201910365195 A CN201910365195 A CN 201910365195A CN 111845247 A CN111845247 A CN 111845247A
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- 238000000034 method Methods 0.000 title claims abstract description 27
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims abstract description 436
- 229910002092 carbon dioxide Inorganic materials 0.000 claims abstract description 218
- 239000001569 carbon dioxide Substances 0.000 claims abstract description 218
- 230000029058 respiratory gaseous exchange Effects 0.000 claims description 36
- 238000004378 air conditioning Methods 0.000 claims description 35
- 238000001914 filtration Methods 0.000 claims description 4
- 238000010438 heat treatment Methods 0.000 abstract description 13
- 238000001816 cooling Methods 0.000 abstract description 10
- 238000005265 energy consumption Methods 0.000 abstract description 7
- 238000010586 diagram Methods 0.000 description 14
- 230000001276 controlling effect Effects 0.000 description 5
- 230000001105 regulatory effect Effects 0.000 description 5
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000005057 refrigeration Methods 0.000 description 2
- 230000000241 respiratory effect Effects 0.000 description 2
- 230000035945 sensitivity Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008707 rearrangement Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
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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
- B60H1/008—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 air quality
-
- 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
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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
- B60H1/00814—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
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- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Air-Conditioning For Vehicles (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention discloses a vehicle-mounted air conditioner control system and a vehicle-mounted air conditioner control method, wherein the vehicle-mounted air conditioner control system comprises a carbon dioxide concentration sensor, an air conditioner controller and an internal and external circulation motor, the carbon dioxide concentration sensor is used for detecting the concentration of carbon dioxide in a vehicle and generating a carbon dioxide concentration signal and outputting the carbon dioxide concentration signal through a first signal output end, the air conditioner controller is used for generating a mode switching signal according to the carbon dioxide concentration signal input by a first signal input end and outputting the mode switching signal through a second signal output end, and the internal and external circulation motor is used for controlling the vehicle-mounted air conditioner to switch an internal circulation mode and an external circulation mode according to the mode switching signal input by a second signal input end. Through the technical scheme of the invention, the heating or cooling load of the vehicle-mounted air conditioner is reduced while the air freshness in the vehicle is maintained, so that the energy consumption of the electric vehicle is reduced, and the endurance mileage of the electric vehicle is increased.
Description
Technical Field
The embodiment of the invention relates to the technical field of automobiles, in particular to a vehicle-mounted air conditioner control system and a vehicle-mounted air conditioner control method.
Background
In order to ensure fresh air in the vehicle, the vehicle is in an external circulation air inlet state for a long time, when the vehicle air conditioner is in a heating mode in winter (or the vehicle air conditioner is in a cooling mode in summer), a large amount of air with proper temperature in the vehicle is replaced by cold air (or hot air) which enters the vehicle just now through the external circulation mode, and therefore more electric quantity needs to be consumed to heat (or cool) newly-entered air again so as to keep the temperature in the vehicle comfortable.
Lack the system that the interior air freshness detected in traditional car, nevertheless too high in-car carbon dioxide concentration can make driver and passenger drowsy, and the reaction is dull, seriously influences driving safety, consequently, how when maintaining the interior air freshness, reduce the heating or the refrigeration power consumption of car and become the problem that awaits a urgent need to solve.
Disclosure of Invention
In view of this, the invention provides a vehicle-mounted air conditioner control system and a vehicle-mounted air conditioner control method, which are beneficial to reducing heating or cooling load of a vehicle-mounted air conditioner while maintaining air freshness in a vehicle, so as to reduce energy consumption of an electric vehicle and increase the endurance mileage of the electric vehicle.
In a first aspect, an embodiment of the present invention provides a vehicle-mounted air conditioner control system, including:
The carbon dioxide concentration sensor comprises a first signal output end and is used for detecting the concentration of carbon dioxide in the vehicle, generating a carbon dioxide concentration signal and outputting the carbon dioxide concentration signal through the first signal output end;
the air conditioner controller comprises a first signal input end and a second signal output end, the first signal input end is electrically connected with the first signal output end, and the air conditioner controller is used for generating a mode switching signal according to the carbon dioxide concentration signal input by the first signal input end and outputting the mode switching signal through the second signal output end;
the internal and external circulation motor comprises a second signal input end, the second signal input end is electrically connected with the second signal output end, and the internal and external circulation motor is used for controlling the vehicle-mounted air conditioner to switch an internal circulation mode and an external circulation mode according to the mode switching signal input by the second signal input end.
Further, the air conditioner controller comprises a comparison circuit, the comparison circuit comprises a first comparison signal input end, a second comparison signal input end and a comparison signal output end, and the comparison signal output end of the comparison circuit is used as a second signal output end of the air conditioner controller;
The second comparison signal input end of the comparison circuit is connected with a set carbon dioxide concentration signal, and the comparison circuit is used for adjusting the level value of the output signal of the comparison signal output end according to the level value relation of the input signals of the first comparison signal input end and the second comparison signal input end.
Further, the first comparison signal input end of the comparison circuit is used as the first signal input end of the air conditioner controller; alternatively, the first and second electrodes may be,
the air conditioner controller further comprises a first filter circuit, the first filter circuit comprises a first filter signal input end and a first filter signal output end, the first filter signal input end of the first filter circuit serves as the first signal input end of the air conditioner controller, the first filter signal output end of the first filter circuit is electrically connected with the first comparison signal input end of the comparison circuit, and the first filter circuit is used for filtering interference signals input by the first filter signal input end in the carbon dioxide concentration signals and outputting the filtered carbon dioxide concentration signals after the interference signals through the first filter signal output end.
Further, the comparison circuit comprises a comparator, a non-inverting input terminal of the comparator is used as the first comparison signal input terminal of the comparison circuit, an inverting input terminal of the comparator is used as the second comparison signal input terminal of the comparison circuit, and an output terminal of the comparator is used as the comparison signal output terminal of the comparison circuit.
Further, the air conditioner controller comprises a logic circuit, the logic circuit comprises a first logic signal input end, a second logic signal input end and a logic signal output end, and the logic signal output end of the logic circuit is used as a second signal output end of the air conditioner controller;
and a second logic signal output end of the logic circuit is connected with a set carbon dioxide concentration signal, and the logic circuit is used for carrying out logic operation on the level values of the input signals of the first logic signal input end and the second logic signal input end and adjusting the level value of the output signal of the logic signal output end according to the logic operation result.
Further, the first logic signal input end of the logic circuit is used as the first signal input end of the air conditioner controller; alternatively, the first and second electrodes may be,
The air conditioner controller further comprises a second filter circuit, the second filter circuit comprises a second filter signal input end J1 and a second filter signal output end, the second filter signal input end of the second filter circuit serves as the first signal input end of the air conditioner controller, the second filter signal output end of the second filter circuit is electrically connected with the first logic signal input end of the logic circuit, and the second filter circuit is used for filtering interference signals input by the second filter signal input end in the carbon dioxide concentration signals and outputting the filtered carbon dioxide concentration signals after the interference signals through the second filter signal output end.
Further, the logic circuit includes one or more combinational logic gate devices.
Further, the internal and external circulation motor comprises a change-over switch, the change-over switch comprises a change-over signal input end, a first change-over signal output end and a second change-over signal output end, and the change-over signal input end of the change-over switch is used as the second signal input end of the internal and external circulation motor;
the air conditioner controller outputs a first mode switching signal through the second signal output end when determining that the concentration of the carbon dioxide in the vehicle is smaller than the set concentration of the carbon dioxide according to the carbon dioxide concentration signal, and the change-over switch maintains the circulation mode of the vehicle-mounted air conditioner in an internal circulation mode through the first switching signal output end when the change-over signal input end receives the first mode switching signal;
And the air conditioner controller outputs a second mode switching signal through the second signal output end when determining that the concentration of the carbon dioxide in the vehicle is greater than or equal to a set concentration of the carbon dioxide according to the carbon dioxide concentration signal, and the change-over switch switches the circulation mode of the vehicle-mounted air conditioner from the inner circulation mode to the outer circulation mode through the second switching signal output end when the change-over signal input end receives the second mode switching signal.
Further, the carbon dioxide concentration sensor is disposed on a front pillar and/or a center pillar of the vehicle.
Furthermore, the difference between the position of the carbon dioxide concentration sensor on the vehicle pillar and the level of the set average breathing surface is smaller than or equal to the set distance.
Further, the position of the carbon dioxide concentration sensor on the vehicle pillar is the same as the level of the set average breathing surface.
Further, at least one height adjusting structure is arranged in the vehicle, the height adjusting structures and the carbon dioxide concentration sensors are arranged in a one-to-one correspondence mode, and the corresponding horizontal height of the carbon dioxide concentration sensors can be adjusted by adjusting the height adjusting structures.
Further, the vehicle-mounted air conditioner control system further includes:
The breathing surface height recognizer comprises a third signal output end, and is used for recognizing the horizontal height of a breathing surface of a passenger, generating a breathing surface height signal and outputting the breathing surface height signal through the third signal output end;
the height adjuster comprises a third signal input end and a fourth signal output end, the third signal input end is electrically connected with the third signal output end, and the height adjuster is used for adjusting a height adjusting signal output by the fourth signal output end according to the breathing surface height signal input by the third signal input end;
the height adjusting structure comprises a fourth signal input end, the fourth signal input end is electrically connected with the fourth signal output end, and the height adjusting structure is used for adjusting the horizontal height of the carbon dioxide concentration sensor according to the height adjusting signal input by the fourth signal input end.
Further, the height adjusting structure comprises a slide rail structure, and the carbon dioxide concentration sensor can slide along the extending direction of the slide rail structure.
Further, height adjustment structure and the carbon dioxide concentration sensor that corresponds inlay in being provided with this carbon dioxide concentration sensor's car post.
In a second aspect, an embodiment of the present invention further provides a vehicle air conditioner control method, where the vehicle air conditioner control method is executed by the vehicle air conditioner control system according to the first aspect, and the vehicle air conditioner control method includes:
the carbon dioxide concentration sensor detects the concentration of carbon dioxide in the vehicle, generates a carbon dioxide concentration signal and outputs the carbon dioxide concentration signal through a first signal output end;
the air conditioner controller generates a mode switching signal according to the carbon dioxide concentration signal input by the first signal input end and outputs the mode switching signal through the second signal output end;
and the internal and external circulation motor controls the vehicle-mounted air conditioner to switch between an internal circulation mode and an external circulation mode according to the mode switching signal input by the second signal input end.
Further, the air conditioner controller outputs a first mode switching signal through the second signal output end when determining that the concentration of the carbon dioxide in the vehicle is smaller than a set concentration of the carbon dioxide according to the carbon dioxide concentration signal, and the internal and external circulation motor maintains the circulation mode of the vehicle-mounted air conditioner in an internal circulation mode when receiving the first mode switching signal;
And the air conditioner controller outputs a second mode switching signal through the second signal output end when determining that the concentration of the carbon dioxide in the vehicle is greater than or equal to the set concentration of the carbon dioxide according to the carbon dioxide concentration signal, and the internal and external circulation motor switches the circulation mode of the vehicle-mounted air conditioner from the internal circulation mode to the external circulation mode when receiving the second mode switching signal.
Further, after the internal and external circulation motor switches the circulation mode of the vehicle-mounted air conditioner from the internal circulation mode to the external circulation mode when receiving the second mode switching signal, the vehicle-mounted air conditioner control method further includes:
and after the vehicle-mounted air conditioner maintains the external circulation mode for the set time, the internal and external circulation motor switches the circulation mode of the vehicle-mounted air conditioner from the external circulation mode back to the internal circulation mode.
Further, the outer circulation mode includes a full outer circulation mode and a partial outer circulation mode.
The embodiment of the invention provides a vehicle-mounted air conditioner control system and a vehicle-mounted air conditioner control method, wherein the vehicle-mounted control bar control system comprises a carbon dioxide concentration sensor, an air conditioner controller and an internal and external circulation motor, the carbon dioxide concentration sensor is used for detecting the concentration of carbon dioxide in a vehicle and generating a carbon dioxide concentration signal and outputting the carbon dioxide concentration signal through a first signal output end, the air conditioner controller is used for generating a mode switching signal according to the carbon dioxide concentration signal input by a first signal input end and outputting the mode switching signal through a second signal output end, the internal and external circulation motor is used for controlling the vehicle-mounted air conditioner to switch an internal circulation mode and an external circulation mode according to the mode switching signal input by a second signal input end, thus, the carbon dioxide concentration sensor in the vehicle-mounted air conditioner control system is used for, and the switching of the internal and external circulation modes of the vehicle-mounted air conditioner is realized, so that the heating or refrigerating load of the vehicle-mounted air conditioner is reduced while the air freshness in the vehicle is maintained, the energy consumption of the electric vehicle is reduced, and the endurance mileage of the electric vehicle is increased.
Drawings
Other features, objects and advantages of the present application will become more apparent upon reading of the following detailed description of non-limiting embodiments thereof, made with reference to the accompanying drawings in which:
fig. 1 is a schematic structural diagram of a vehicle air conditioner control system according to an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of another vehicle air conditioner control system according to an embodiment of the present invention;
FIG. 3 is a schematic structural diagram of another vehicle air conditioner control system according to an embodiment of the present invention;
FIG. 4 is a schematic structural diagram of another vehicle air conditioner control system according to an embodiment of the present invention;
FIG. 5 is a schematic structural diagram of another vehicle air conditioner control system according to an embodiment of the present invention;
FIG. 6 is a schematic structural diagram of another vehicle air conditioner control system according to an embodiment of the present invention;
FIG. 7 is a schematic side view of an automobile according to an embodiment of the present invention;
FIG. 8 is a schematic structural diagram of another vehicle air conditioner control system according to an embodiment of the present invention;
fig. 9 is a schematic flowchart of a control method for a vehicle air conditioner according to an embodiment of the present invention;
fig. 10 is a schematic specific flowchart of a vehicle air conditioner control method according to an embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures. Throughout this specification, the same or similar reference numbers refer to the same or similar structures, elements, or processes. It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.
The embodiment of the invention provides a vehicle-mounted air conditioner control system which comprises a carbon dioxide concentration sensor, an air conditioner controller and an internal and external circulation motor, wherein the carbon dioxide concentration sensor comprises a first signal output end, the air conditioner controller comprises a first signal input end and a second signal output end, the internal and external circulation motor comprises a second signal input end, the first signal input end is electrically connected with the first signal output end, and the second signal input end is electrically connected with the second signal output end. The air conditioner controller is used for generating a mode switching signal according to the carbon dioxide concentration signal input by the first signal input end and outputting the mode switching signal through the second signal output end, and the internal and external circulation motor is used for controlling the vehicle-mounted air conditioner to switch between an internal circulation mode and an external circulation mode according to the mode switching signal input by the second signal input end.
In order to ensure fresh air in the vehicle, the vehicle is in an external circulation air inlet state for a long time, when the vehicle air conditioner is in a heating mode in winter (or the vehicle air conditioner is in a cooling mode in summer), a large amount of air with proper temperature in the vehicle is replaced by cold air (or hot air) which enters the vehicle just now through the external circulation mode, and therefore more electric quantity needs to be consumed to heat (or cool) newly-entered air again so as to keep the temperature in the vehicle comfortable. Lack the system that the interior air freshness detected in traditional car, nevertheless too high in-car carbon dioxide concentration can make driver and passenger drowsy, and the reaction is dull, seriously influences driving safety, consequently, how when maintaining the interior air freshness, reduce the heating or the refrigeration power consumption of car and become the problem that awaits a urgent need to solve.
The vehicle-mounted air conditioner control system provided by the embodiment of the invention comprises a carbon dioxide concentration sensor, an air conditioner controller and an internal and external circulation motor, wherein the carbon dioxide concentration sensor is used for detecting the concentration of carbon dioxide in a vehicle and generating a carbon dioxide concentration signal and outputting the carbon dioxide concentration signal through a first signal output end, the air conditioner controller is used for generating a mode switching signal according to the carbon dioxide concentration signal input by a first signal input end and outputting the mode switching signal through a second signal output end, and the internal and external circulation motor is used for controlling the vehicle-mounted air conditioner to switch an internal circulation mode and an external circulation mode according to the mode switching signal input by a second signal input end, so that the carbon dioxide concentration sensor in the vehicle-mounted air conditioner control system is used for detecting the concentration of the carbon dioxide in the vehicle and realizing the switching of the internal and external circulation modes of the vehicle-, the heating or cooling load of the vehicle-mounted air conditioner is reduced, so that the energy consumption of the electric automobile is reduced, and the endurance mileage of the electric automobile is increased.
The above is the core idea of the present invention, and the technical solution in the embodiment of the present invention will be clearly and completely described below with reference to the drawings in the embodiment of the present invention. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without any creative work belong to the protection scope of the present invention.
Fig. 1 is a schematic structural diagram of a vehicle air conditioner control system according to an embodiment of the present invention. As shown in fig. 1, the vehicle air-conditioning control system includes a carbon dioxide concentration sensor 1, an air-conditioning controller 2 and an internal and external circulation motor 3, the carbon dioxide concentration sensor 1 includes a first signal output terminal a1, the air-conditioning controller 2 includes a first signal input terminal a2 and a second signal output terminal B1, the internal and external circulation motor 3 includes a second signal input terminal B2, the first signal input terminal a2 is electrically connected with the first signal output terminal a1, and the second signal input terminal B2 is electrically connected with the second signal output terminal B1. The carbon dioxide concentration sensor 1 is used for detecting the concentration of carbon dioxide in a vehicle, generating a carbon dioxide concentration signal and outputting the carbon dioxide concentration signal through a first signal output end A1, the air conditioner controller 2 is used for generating a mode switching signal according to the carbon dioxide concentration signal input by a first signal input end A2 and outputting the mode switching signal through a second signal output end B1, and the internal and external circulation motor 3 is used for controlling the vehicle-mounted air conditioner to switch an internal circulation mode and an external circulation mode according to the mode switching signal input by a second signal input end B2.
Specifically, as shown in fig. 1, the carbon dioxide concentration sensor 1 detects the concentration of carbon dioxide in the vehicle and generates a carbon dioxide concentration signal to be sent to the air-conditioning controller 2, the air-conditioning controller 2 may compare the concentration of carbon dioxide in the vehicle with a set carbon dioxide concentration according to the received carbon dioxide concentration signal, and generate a mode switching signal to be sent to the internal and external circulation motor 3 according to the comparison result, and the internal and external circulation motor 3 controls the vehicle-mounted air conditioner to switch between the internal circulation mode and the external circulation mode according to the received mode switching signal.
For example, the air conditioner controller 2 may maintain the circulation mode of the vehicle-mounted air conditioner in the internal circulation mode through the internal and external circulation motor 3 when it is determined that the concentration of carbon dioxide in the vehicle is less than the set concentration of carbon dioxide, so that the air in the vehicle is fresh, and the vehicle-mounted air conditioner is in the internal circulation mode, so that the vehicle maintains high heating or cooling efficiency. The air conditioner controller 2 can also switch the circulation mode of the vehicle-mounted air conditioner from the internal circulation mode to the external circulation mode through the internal and external circulation motor 3 when the concentration of carbon dioxide in the vehicle is determined to be larger than or equal to the set concentration of carbon dioxide, so that the air in the vehicle can be timely updated when the freshness of the air in the vehicle is reduced to the set degree, the freshness of the air in the vehicle is kept, discomfort caused by overhigh concentration of carbon dioxide in the vehicle is avoided for a driver, and the driving safety is improved. In addition, after the vehicle-mounted air conditioner is switched from the internal circulation mode to the external circulation mode, the vehicle-mounted air conditioner can be automatically switched from the external circulation mode to the internal circulation mode after the external circulation mode is maintained for a set time. Therefore, the heating or cooling load of the vehicle-mounted air conditioner is reduced while the air freshness in the vehicle is maintained, the energy consumption of the electric vehicle is reduced, and the endurance mileage of the electric vehicle is increased.
Fig. 2 is a schematic structural diagram of another vehicle air conditioner control system according to an embodiment of the present invention. As shown in fig. 2, it may be provided that the air conditioner controller 2 includes a comparison circuit 21, the comparison circuit 21 includes a first comparison signal input terminal F1, a second comparison signal input terminal F2 and a comparison signal output terminal F3, the first comparison signal input terminal F1 of the comparison circuit 21 is used as the first signal input terminal a2 of the air conditioner controller 2, the second comparison signal input terminal F2 of the comparison circuit 21 is connected to the set carbon dioxide concentration signal, the comparison signal output terminal F3 of the comparison circuit 21 is used as the second signal output terminal B1 of the air conditioner controller 2, and the comparison circuit 21 is configured to adjust the level value of the output signal of the comparison signal output terminal F3 according to the magnitude relationship between the level values of the input signals of the first comparison signal input terminal F1 and the second comparison signal input terminal F2.
As shown in fig. 2, it may be provided that the comparison circuit 21 comprises a comparator having a non-inverting input + as the first comparison signal input F1 of the comparison circuit 21, an inverting input-as the second comparison signal input F2 of the comparison circuit 21, and an output as the comparison signal output F3 of the comparison circuit 21. Specifically, the unidirectional input end of the comparator + is connected with the detected carbon dioxide concentration signal, the reverse input end of the comparator-is connected with the set carbon dioxide concentration signal, the comparator determines the relation between the carbon dioxide concentration in the vehicle and the set carbon dioxide concentration by comparing the level values of the detected carbon dioxide concentration signal and the set carbon dioxide concentration, when the former is larger than the latter, the comparator outputs a high-level mode switching signal through the comparison signal output end F3, when the former is smaller than the latter, the comparator outputs a low-level mode switching signal through the comparison signal output end F3, and the internal and external circulation motor 3 can control whether the vehicle-mounted air conditioner enters the internal circulation mode or the external circulation mode according to the level of the received mode switching signal.
Fig. 3 is a schematic structural diagram of another vehicle air conditioner control system according to an embodiment of the present invention. Different from the vehicle-mounted air conditioning control system with the structure shown in fig. 2, in the vehicle-mounted air conditioning control system with the structure shown in fig. 3, the air conditioning controller 2 further includes a first filter circuit 22, the first filter circuit 22 includes a first filter signal input end G1 and a first filter signal output end G2, the first filter signal input end G1 of the first filter circuit 22 is used as a first signal input end a2 of the air conditioning controller 2, the first filter signal output end G2 of the first filter circuit 22 is electrically connected with a first comparison signal input end F1 of the comparison circuit 21, and the first filter circuit 22 is configured to filter an interference signal in the carbon dioxide concentration signal input by the first filter signal input end G1 and output a carbon dioxide concentration signal after the interference signal is filtered through the first filter signal output end G2.
For example, the first filter circuit 22 may include an electronic component such as an RC filter, and before comparing the detected carbon dioxide concentration signal with the set carbon dioxide concentration signal, the first filter circuit 22 is used to filter out an interference signal in the detected carbon dioxide concentration signal, so as to improve the accuracy of switching the circulation mode of the vehicle-mounted air conditioner according to the carbon dioxide concentration in the vehicle.
Fig. 4 is a schematic structural diagram of another vehicle air conditioner control system according to an embodiment of the present invention. As shown in fig. 4, it may be configured that the air conditioner controller 2 includes a logic circuit 23, the logic circuit 23 includes a first logic signal input terminal H1, a second logic signal input terminal H2 and a logic signal output terminal H3, the first logic signal input terminal H1 of the logic circuit 23 is used as the first signal input terminal a2 of the air conditioner controller 2, the second logic signal output terminal H3 of the logic circuit 23 is connected to the set carbon dioxide concentration signal, the logic signal output terminal H3 of the logic circuit 23 is used as the second signal output terminal B1 of the air conditioner controller 2, and the logic circuit 23 is configured to perform a logic operation on the level values of the signals input by the first logic signal input terminal H1 and the second logic signal input terminal H2, and adjust the level value of the signal output by the logic signal output terminal H3 according to the logic operation result.
Illustratively, the logic circuit 23 may be configured to include one or more combinational logic gate devices, for example, the logic circuit 23 may include an and gate, an or gate, an not gate, or a combination of any two or three of the foregoing, and the logic circuit 23 may perform a logic operation on the detected capnography signal inputted from the first logic signal input terminal H1 and the set capnography signal inputted from the second logic signal input terminal H2 according to a specific combinational logic gate device included in the logic circuit 23, the logic circuit 23 may be configured to determine that the in-vehicle carbon dioxide concentration differs in magnitude from the set carbon dioxide concentration, mode switching signals with different levels are output through a logic signal output end H3, and accordingly the circulation mode of the vehicle-mounted air conditioner is switched according to the size relation between the concentration of carbon dioxide in the vehicle and the set concentration of carbon dioxide.
Fig. 5 is a schematic structural diagram of another vehicle air conditioner control system according to an embodiment of the present invention. Different from the vehicle-mounted air conditioning control system with the structure shown in fig. 4, in the vehicle-mounted air conditioning control system with the structure shown in fig. 5, the air conditioning controller 2 further includes a second filter circuit 24, the second filter circuit 24 includes a second filter signal input terminal J1 and a second filter signal output terminal J2, the second filter signal input terminal J1 of the second filter circuit 24 is used as a first signal input terminal a2 of the air conditioning controller 2, the second filter signal output terminal J2 of the second filter circuit 24 is electrically connected with a first logic signal input terminal H1 of the logic circuit 23, and the second filter circuit 24 is configured to filter an interference signal in the carbon dioxide concentration signal input by the second filter signal input terminal J1 and output the carbon dioxide concentration signal after the interference signal is filtered through the second filter signal output terminal J2.
Similarly, the second filter circuit 24 may be configured to include electronic components such as RC filter, and before comparing the detected carbon dioxide concentration signal with the set carbon dioxide concentration signal, the second filter circuit 24 may be used to filter the interference signal in the detected carbon dioxide concentration signal, so as to improve the accuracy of switching the circulation mode of the vehicle-mounted air conditioner according to the carbon dioxide concentration in the vehicle.
Fig. 6 is a schematic structural diagram of another vehicle air conditioner control system according to an embodiment of the present invention. As shown in fig. 6, it may be arranged that the inside-outside circulation motor 3 includes a changeover switch 31, the changeover switch 31 includes a changeover signal input terminal K1, a first changeover signal output terminal K2 and a second changeover signal output terminal K3, and the changeover signal input terminal K1 of the changeover switch 31 serves as the second signal input terminal B2 of the inside-outside circulation motor 3. The air conditioner controller 2 outputs a first mode switching signal through the second signal output end B1 when determining that the concentration of the carbon dioxide in the vehicle is smaller than the set concentration of the carbon dioxide according to the carbon dioxide concentration signal, and the switch 31 maintains the circulation mode of the vehicle-mounted air conditioner to be in the internal circulation mode through the first switching signal output end K2 when the switching signal input end K1 receives the first mode switching signal. The air conditioner controller 2 outputs a second mode switching signal through a second signal output end B1 when determining that the concentration of the carbon dioxide in the vehicle is larger than or equal to the set concentration of the carbon dioxide according to the carbon dioxide concentration signal, and the switch 31 switches the circulation mode of the vehicle-mounted air conditioner from the internal circulation mode to the external circulation mode through a second switching signal output end K3 when the switching signal input end K1 receives the second mode switching signal.
Specifically, the change-over switch 31 may be configured to determine that the switching signal input terminal K1 is turned on with the first switching signal output terminal K2 or that the switching signal input terminal K1 is turned on with the second switching signal output terminal K3 according to the level of the mode switching signal level value input by the switching signal input terminal K1, and when the switching signal input terminal K1 is turned on with the first switching signal output terminal K2, the internal-external circulation motor 3 controls the vehicle-mounted air conditioner to be in the internal circulation mode, and when the switching signal input terminal K1 is turned on with the second switching signal output terminal K3, the internal-external circulation motor 3 controls the vehicle-mounted air conditioner to be in the external circulation mode, and accordingly, the internal-external circulation motor 3 uses the change-over switch 31 to control the vehicle-mounted air conditioner to switch between the internal circulation mode and.
Fig. 7 is a schematic side view of an automobile according to an embodiment of the present invention. Referring to fig. 1 to 7, the carbon dioxide concentration sensor 1 may be provided on the front pillar a and/or the center pillar B of the vehicle, that is, the carbon dioxide concentration sensor 1 may be provided on the front pillar a of the vehicle, or the carbon dioxide concentration sensor 1 may be provided on the center pillar B of the vehicle, or the carbon dioxide concentration sensors 1 may be provided on both the front pillar a and the center pillar B of the vehicle, as shown in fig. 7, to detect the carbon dioxide concentration in the air near the passenger in different parking spaces.
Alternatively, the difference in level between the position of the carbon dioxide concentration sensor 1 on the pillar and the set average breathing surface 10 may be set to be equal to or less than the set distance d 1. For example, as shown in fig. 7, the breathing surface may be a position of a tip of a nose of a person, the set average breathing surface 10 may be an average breathing surface level obtained according to a passenger in a set height range, a difference between the position of the carbon dioxide concentration sensor 1 on the pillar and the set average breathing surface 10 may be set to be equal to or less than a set distance d1, and the set distance d1 may be set to be a distance between the set average breathing surface 10 and an upper limit 101 and a lower limit 102 of the breathing surface, for example, may be set to be 100mm, so as to avoid a problem that the sensitivity of switching the circulation mode of the vehicle air conditioner according to the carbon dioxide concentration in the vehicle is low due to the too far distance between the carbon dioxide concentration sensor 1 and the breathing surface of the passenger. Preferably, the position of the carbon dioxide concentration sensor 1 on the pillar may be set to be the same as the level of the set average breathing surface 10, so as to maximize the sensitivity of switching the circulation mode of the in-vehicle air conditioner according to the carbon dioxide concentration in the vehicle.
Optionally, at least one height adjusting structure can be arranged in the vehicle, the height adjusting structure and the carbon dioxide concentration sensor are arranged in a one-to-one correspondence manner, and the horizontal height of the corresponding carbon dioxide concentration sensor can be adjusted by adjusting the height adjusting structure. For example, the height adjusting structure may include a slide rail structure, and the carbon dioxide concentration sensor may slide along an extending direction of the slide rail structure.
Exemplarily, can set up the slide rail structure in every corresponding position that needs to set up on the car post of carbon dioxide concentration sensor, can follow the extending direction of slide rail structure through setting up carbon dioxide concentration sensor and slide for the great passenger of height difference can adjust by oneself carbon dioxide concentration sensor's height according to the height of self, with the flexibility that improves carbon dioxide concentration sensor and use. It should be noted that the height adjusting structure is not limited to a sliding rail structure, and the embodiment of the present invention does not limit the specific form of the height adjusting structure, so as to ensure that the carbon dioxide concentration sensor is driven by the height adjusting structure to achieve height adjustment.
Fig. 8 is a schematic structural diagram of another vehicle air conditioner control system according to an embodiment of the present invention. With reference to fig. 1, 7 and 8, the vehicle air-conditioning control system may further include a respiratory surface height identifier 4 and a height adjuster 5, the respiratory surface height identifier 4 includes a third signal output end D1, the height adjuster 5 includes a third signal input end D2 and a fourth signal output end E1, the height adjusting structure 6 includes a fourth signal input end E2, the third signal input end D2 is electrically connected to the third signal output end D1, and the fourth signal input end E2 is electrically connected to the fourth signal output end E1. The breathing surface height recognizer 4 is used for recognizing the horizontal height of the breathing surface of the passenger and generating a breathing surface height signal, the breathing surface height signal is output through a third signal output end D1, the height regulator 5 is used for regulating a height regulating signal output by a fourth signal output end E1 according to the breathing surface height signal input by a third signal input end D2, and the height regulating structure 6 is used for regulating the horizontal height of the carbon dioxide concentration sensor 1 according to the height regulating signal input by a fourth signal input end E2.
Specifically, the breathing surface height recognizer 4 recognizes the breathing surface of the passenger and generates a breathing surface height signal to be sent to the height adjuster 5, the height adjuster 5 adjusts the height adjusting signal sent to the height adjusting structure 6 according to the received breathing surface height signal, and the height adjusting structure 6 adjusts the level of the carbon dioxide concentration sensor 1 according to the received height adjusting signal. Illustratively, the breathing surface height recognizer 4 may include a face recognition component, the breathing surface height recognizer 4 determines the level of the breathing surface of the passenger through analysis of the recognized face, and the level of the carbon dioxide concentration sensor 1 is adjusted through the height adjuster 5 and the height adjusting structure 6 so that the level of the carbon dioxide concentration sensor 1 is the same as the level of the breathing surface of the passenger, so that the use flexibility of the carbon dioxide concentration sensor 1 is improved, meanwhile, the automatic adjustment of the level of the carbon dioxide concentration sensor 1 is realized, and the intelligence degree of the vehicle-mounted air conditioner control system is further improved.
Optionally, the height adjusting structure and the corresponding carbon dioxide concentration sensor can be arranged to be embedded in the vehicle column provided with the carbon dioxide concentration sensor, so that the surface of the vehicle column provided with the carbon dioxide concentration sensor and the height adjusting structure is flat, no convex structure exists, and the probability of collision of passengers is avoided while the inside attractiveness of the vehicle is improved. For example, a carbon dioxide concentration sensor may be embedded in the pillar trim, and honeycomb-shaped openings may be provided in the trim surface for ventilation.
The embodiment of the invention also provides a vehicle-mounted air conditioner control method. Fig. 9 is a flowchart illustrating a vehicle-mounted air conditioner control method according to an embodiment of the present invention, where the vehicle-mounted air conditioner control method may be executed by the vehicle-mounted air conditioner control system according to the embodiment, and as shown in fig. 9, the vehicle-mounted air conditioner control method includes:
s110, the carbon dioxide concentration sensor detects the concentration of carbon dioxide in the vehicle, generates a carbon dioxide concentration signal and outputs the carbon dioxide concentration signal through a first signal output end.
And S120, generating a mode switching signal by the air conditioner controller according to the carbon dioxide concentration signal input by the first signal input end, and outputting the mode switching signal through the second signal output end.
S130, the internal and external circulation motor controls the vehicle-mounted air conditioner to switch between an internal circulation mode and an external circulation mode according to a mode switching signal input by the second signal input end.
Optionally, the air conditioner controller outputs a first mode switching signal through the second signal output end when determining that the concentration of carbon dioxide in the vehicle is smaller than the set concentration of carbon dioxide according to the carbon dioxide concentration signal, and the internal and external circulation motor maintains the circulation mode of the vehicle-mounted air conditioner in the internal circulation mode when receiving the first mode switching signal. The air conditioner controller outputs a second mode switching signal through a second signal output end when determining that the concentration of carbon dioxide in the vehicle is larger than or equal to the set concentration of carbon dioxide according to the carbon dioxide concentration signal, and the internal and external circulation motor switches the circulation mode of the vehicle-mounted air conditioner from the internal circulation mode to the external circulation mode when receiving the second mode switching signal.
Specifically, as shown in fig. 1, when it is determined that the concentration of carbon dioxide in the vehicle is less than the set concentration of carbon dioxide, the air conditioner controller 2 may set the concentration of carbon dioxide to be, for example, 1000PPM, and maintain the circulation mode of the vehicle air conditioner in the internal circulation mode through the internal and external circulation motor 3, so that the air in the vehicle is relatively fresh, and the vehicle air conditioner is in the internal circulation mode, so that the vehicle maintains relatively high heating or cooling efficiency. Similarly, the air conditioner controller 2 can switch the circulation mode of the vehicle-mounted air conditioner from the internal circulation mode to the external circulation mode through the internal and external circulation motor 3 when the concentration of carbon dioxide in the vehicle is determined to be greater than or equal to the set concentration of carbon dioxide, so that the air in the vehicle can be timely updated when the freshness of the air in the vehicle is reduced to the set degree, the freshness of the air in the vehicle is kept, discomfort caused by overhigh concentration of carbon dioxide in the vehicle is avoided for a driver, and the driving safety is improved.
Optionally, after the internal and external circulation motor switches the circulation mode of the vehicle-mounted air conditioner from the internal circulation mode to the external circulation mode when receiving the second mode switching signal, the vehicle-mounted air conditioner control method further includes switching the circulation mode of the vehicle-mounted air conditioner from the external circulation mode to the internal circulation mode by the internal and external circulation motor after the vehicle-mounted air conditioner maintains the external circulation mode for the set time.
Specifically, the vehicle-mounted air conditioner may be automatically switched from the external circulation mode back to the internal circulation mode after the external circulation mode is maintained for a set time. Therefore, the heating or cooling load of the vehicle-mounted air conditioner is reduced while the air freshness in the vehicle is maintained, the energy consumption of the electric vehicle is reduced, and the endurance mileage of the electric vehicle is increased.
Optionally, the external circulation mode includes a complete external circulation mode and a partial external circulation mode, the air intake rate of the vehicle-mounted air conditioner corresponding to the complete external circulation mode is the largest, the air intake rate of the vehicle-mounted air conditioner corresponding to the partial external circulation mode is smaller than the largest value, and the air-conditioning controller can control whether the vehicle enters the complete external circulation mode or the partial external circulation mode through the internal and external circulation motors according to the difference value between the concentration of carbon dioxide in the vehicle and the set concentration of carbon dioxide. For example, when the air conditioner controller determines that the difference value between the concentration of carbon dioxide in the vehicle and the set concentration of carbon dioxide is large, the vehicle can be controlled to enter a complete external circulation mode through an internal and external circulation motor; when the air conditioner controller determines that the difference value between the concentration of carbon dioxide in the vehicle and the set concentration of carbon dioxide is small, the vehicle can be controlled to enter a partial external circulation mode through the internal and external circulation motor.
Fig. 10 is a schematic specific flowchart of a vehicle air conditioner control method according to an embodiment of the present invention. The vehicle-mounted air conditioner control method may also be executed by the vehicle-mounted air conditioner control system of the above embodiment, as shown in fig. 10, the vehicle-mounted air conditioner control method includes:
and S210, the vehicle-mounted air conditioner is in an internal circulation mode.
For example, after the automobile is started, the internal and external circulation air doors of the vehicle-mounted air conditioner can be set to automatically operate to an internal circulation mode, so that the vehicle-mounted air conditioner can rapidly heat or cool air in the automobile to a set temperature.
S220, the carbon dioxide concentration sensor detects the concentration of carbon dioxide in the vehicle, generates a carbon dioxide concentration signal and sends the carbon dioxide concentration signal to the air conditioner controller.
As shown in fig. 1, a carbon dioxide concentration sensor 1 may be provided to detect the concentration of carbon dioxide in the vehicle in real time, and generate a carbon dioxide concentration signal according to the detected concentration of carbon dioxide and transmit the signal to the air conditioner controller 2.
And S230, judging whether the concentration of the carbon dioxide in the vehicle is greater than or equal to the set concentration of the carbon dioxide by the air conditioner controller according to the carbon dioxide concentration signal.
As shown in fig. 1, the air conditioner controller 2 determines whether the concentration of carbon dioxide in the vehicle is greater than or equal to a set carbon dioxide concentration according to the carbon dioxide concentration signal, where the set carbon dioxide concentration may be 1000PPM, and if so, that is, the concentration of carbon dioxide in the vehicle is greater than or equal to 100PPM, then step S240 is executed; if not, namely the concentration of the carbon dioxide in the vehicle is less than 100PPM, the step S210 is returned, namely the air conditioner controller 2 controls the vehicle-mounted air conditioner to continuously keep the internal circulation state through the internal and external circulation motor 3.
S240, the vehicle-mounted air conditioner is switched from the internal circulation mode to the external circulation mode, and the external circulation mode is maintained for T1 time.
As shown in fig. 1, after the air conditioner controller 2 determines that the concentration of carbon dioxide in the vehicle is greater than or equal to 1000PPM, the internal and external circulation motor 3 controls the vehicle-mounted air conditioner to be switched from the internal circulation mode to the external circulation mode, and fresh air outside the vehicle enters the vehicle through the vehicle-mounted air conditioner. In addition, the external circulation mode is set to maintain the time of T1, and the air in the vehicle can be completely updated once within the time of T1.
Illustratively, the vehicle interior space may be set to V1 in m3The air inlet volume of the air conditioning box of the vehicle-mounted air conditioner is delta V and the unit is m3And h, the unit of T1 is s, then T1 satisfies the following calculation formula:
t1 air-conditioning box according to specific vehicle type and correspondingThe intake air is a specific value, for example, the interior space of a conventional sedan is 2.5m3The air inlet volume of the air conditioning box is 400m3And/h, the corresponding external circulation operation time T1 is about 22.5s, so that the heating or cooling load of the vehicle-mounted air conditioner is reduced while the air freshness in the vehicle is maintained, the energy consumption of the electric vehicle is further reduced, and the driving range of the electric vehicle is increased.
It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments illustrated herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.
Claims (19)
1. An on-vehicle air conditioner control system, characterized by comprising:
the carbon dioxide concentration sensor comprises a first signal output end and is used for detecting the concentration of carbon dioxide in the vehicle, generating a carbon dioxide concentration signal and outputting the carbon dioxide concentration signal through the first signal output end;
the air conditioner controller comprises a first signal input end and a second signal output end, the first signal input end is electrically connected with the first signal output end, and the air conditioner controller is used for generating a mode switching signal according to the carbon dioxide concentration signal input by the first signal input end and outputting the mode switching signal through the second signal output end;
the internal and external circulation motor comprises a second signal input end, the second signal input end is electrically connected with the second signal output end, and the internal and external circulation motor is used for controlling the vehicle-mounted air conditioner to switch an internal circulation mode and an external circulation mode according to the mode switching signal input by the second signal input end.
2. The vehicle-mounted air conditioning control system according to claim 1, wherein the air conditioning controller comprises a comparison circuit, the comparison circuit comprises a first comparison signal input end, a second comparison signal input end and a comparison signal output end, and the comparison signal output end of the comparison circuit is used as a second signal output end of the air conditioning controller;
The second comparison signal input end of the comparison circuit is connected with a set carbon dioxide concentration signal, and the comparison circuit is used for adjusting the level value of the output signal of the comparison signal output end according to the level value relation of the input signals of the first comparison signal input end and the second comparison signal input end.
3. The on-board air conditioning control system according to claim 2, wherein the first comparison signal input terminal of the comparison circuit serves as the first signal input terminal of the air conditioning controller; alternatively, the first and second electrodes may be,
the air conditioner controller further comprises a first filter circuit, the first filter circuit comprises a first filter signal input end and a first filter signal output end, the first filter signal input end of the first filter circuit serves as the first signal input end of the air conditioner controller, the first filter signal output end of the first filter circuit is electrically connected with the first comparison signal input end of the comparison circuit, and the first filter circuit is used for filtering interference signals input by the first filter signal input end in the carbon dioxide concentration signals and outputting the filtered carbon dioxide concentration signals after the interference signals through the first filter signal output end.
4. The vehicle air conditioner control system according to claim 2 or 3, wherein the comparison circuit comprises a comparator, a same-direction input end of the comparator is used as the first comparison signal input end of the comparison circuit, an opposite-direction input end of the comparator is used as the second comparison signal input end of the comparison circuit, and an output end of the comparator is used as the comparison signal output end of the comparison circuit.
5. The vehicle air conditioner control system of claim 1, wherein the air conditioner controller comprises a logic circuit, the logic circuit comprises a first logic signal input end, a second logic signal input end and a logic signal output end, and the logic signal output end of the logic circuit is used as a second signal output end of the air conditioner controller;
and a second logic signal output end of the logic circuit is connected with a set carbon dioxide concentration signal, and the logic circuit is used for carrying out logic operation on the level values of the input signals of the first logic signal input end and the second logic signal input end and adjusting the level value of the output signal of the logic signal output end according to the logic operation result.
6. The on-board air conditioning control system of claim 5, wherein the first logic signal input of the logic circuit serves as the first signal input of the air conditioning controller; alternatively, the first and second electrodes may be,
the air conditioner controller further comprises a second filter circuit, the second filter circuit comprises a second filter signal input end and a second filter signal output end, the second filter signal input end of the second filter circuit serves as the first signal input end of the air conditioner controller, the second filter signal output end of the second filter circuit is electrically connected with the first logic signal input end of the logic circuit, and the second filter circuit is used for filtering interference signals input by the second filter signal input end in the carbon dioxide concentration signals and outputting the filtered carbon dioxide concentration signals after the interference signals through the second filter signal output end.
7. The on-board air conditioning control system of claim 5 or 6, wherein the logic circuit comprises one or more combinational logic gate devices.
8. The vehicle air conditioner control system according to claim 1, wherein the inside-outside circulation motor includes a changeover switch including a changeover signal input terminal, a first changeover signal output terminal, and a second changeover signal output terminal, the changeover signal input terminal of the changeover switch serving as the second signal input terminal of the inside-outside circulation motor;
The air conditioner controller outputs a first mode switching signal through the second signal output end when determining that the concentration of the carbon dioxide in the vehicle is smaller than the set concentration of the carbon dioxide according to the carbon dioxide concentration signal, and the change-over switch maintains the circulation mode of the vehicle-mounted air conditioner in an internal circulation mode through the first switching signal output end when the change-over signal input end receives the first mode switching signal;
and the air conditioner controller outputs a second mode switching signal through the second signal output end when determining that the concentration of the carbon dioxide in the vehicle is greater than or equal to a set concentration of the carbon dioxide according to the carbon dioxide concentration signal, and the change-over switch switches the circulation mode of the vehicle-mounted air conditioner from the inner circulation mode to the outer circulation mode through the second switching signal output end when the change-over signal input end receives the second mode switching signal.
9. The on-board air conditioning control system according to claim 1, wherein the carbon dioxide concentration sensor is provided on a front pillar and/or a center pillar of the vehicle.
10. The vehicle air conditioning control system according to claim 9, wherein a difference between a level of the carbon dioxide concentration sensor on the pillar and a level of the set average breathing surface is equal to or less than a set distance.
11. The on-board air conditioning control system according to claim 10, wherein the carbon dioxide concentration sensor is located at the same level as the set average breathing surface on the pillar.
12. The vehicle-mounted air conditioner control system according to claim 9, wherein at least one height adjusting structure is arranged in the vehicle, the height adjusting structure and the carbon dioxide concentration sensor are arranged in a one-to-one correspondence manner, and the horizontal height of the corresponding carbon dioxide concentration sensor can be adjusted by adjusting the height adjusting structure.
13. The on-board air conditioning control system according to claim 12, characterized by further comprising:
the breathing surface height recognizer comprises a third signal output end, and is used for recognizing the horizontal height of a breathing surface of a passenger, generating a breathing surface height signal and outputting the breathing surface height signal through the third signal output end;
the height adjuster comprises a third signal input end and a fourth signal output end, the third signal input end is electrically connected with the third signal output end, and the height adjuster is used for adjusting a height adjusting signal output by the fourth signal output end according to the breathing surface height signal input by the third signal input end;
The height adjusting structure comprises a fourth signal input end, the fourth signal input end is electrically connected with the fourth signal output end, and the height adjusting structure is used for adjusting the horizontal height of the carbon dioxide concentration sensor according to the height adjusting signal input by the fourth signal input end.
14. The on-vehicle air conditioning control system according to claim 12 or 13, characterized in that the height adjusting structure includes a slide rail structure, and the carbon dioxide concentration sensor is slidable in an extending direction of the slide rail structure.
15. The on-vehicle air conditioning control system according to claim 14, characterized in that the height adjustment structure and the corresponding carbon dioxide concentration sensor are embedded in a pillar provided with the carbon dioxide concentration sensor.
16. An in-vehicle air-conditioning control method characterized by being executed by the in-vehicle air-conditioning control system according to claim 1, the in-vehicle air-conditioning control method comprising:
the carbon dioxide concentration sensor detects the concentration of carbon dioxide in the vehicle, generates a carbon dioxide concentration signal and outputs the carbon dioxide concentration signal through a first signal output end;
The air conditioner controller generates a mode switching signal according to the carbon dioxide concentration signal input by the first signal input end and outputs the mode switching signal through the second signal output end;
and the internal and external circulation motor controls the vehicle-mounted air conditioner to switch between an internal circulation mode and an external circulation mode according to the mode switching signal input by the second signal input end.
17. The on-vehicle air conditioner control method according to claim 16, wherein the air conditioner controller outputs a first mode switching signal through the second signal output terminal when it is determined from the carbon dioxide concentration signal that the in-vehicle carbon dioxide concentration is less than a set carbon dioxide concentration, and the internal and external circulation motor maintains a circulation mode of the on-vehicle air conditioner in an internal circulation mode when receiving the first mode switching signal;
and the air conditioner controller outputs a second mode switching signal through the second signal output end when determining that the concentration of the carbon dioxide in the vehicle is greater than or equal to the set concentration of the carbon dioxide according to the carbon dioxide concentration signal, and the internal and external circulation motor switches the circulation mode of the vehicle-mounted air conditioner from the internal circulation mode to the external circulation mode when receiving the second mode switching signal.
18. The on-vehicle air conditioner control method according to claim 17, wherein after the inside-outside circulation motor switches the circulation mode of the on-vehicle air conditioner from the inside circulation mode to the outside circulation mode upon receiving the second mode switching signal, the on-vehicle air conditioner control method further comprises:
and after the vehicle-mounted air conditioner maintains the external circulation mode for the set time, the internal and external circulation motor switches the circulation mode of the vehicle-mounted air conditioner from the external circulation mode back to the internal circulation mode.
19. The on-vehicle air conditioner control method according to claim 17 or 18, wherein the external circulation mode includes a full external circulation mode and a partial external circulation mode.
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