Automobile floor heating air conditioner control method and system

Abstract

The invention discloses an automobile floor heating air conditioner control method which comprises the following steps: 1) when an air conditioner is in a starting state, acquiring temperature and humidity information inside and outside an automobile in real time; (2) during air conditioner refrigeration, when the difference value of the in-vehicle temperature T and the out-vehicle temperature Ta is larger than a set threshold value, external circulation is started, and when the difference value of the in-vehicle temperature T and the out-vehicle temperature Ta is smaller than or equal to the set threshold value, internal circulation is started, and timing Tt is started; and (3) when the air conditioner heats, the in-vehicle humidity HR and the glass temperature Tg are measured in real time, the fogging probability F is calculated, when F is larger than a set threshold value, the double-layer-flow air conditioner is controlled to start a double-layer-flow mode, and when F is smaller than or equal to the set threshold value, internal circulation is started. According to the air conditioner, the top-speed stable foot temperature can be provided, air conditioner energy consumption can be reduced, meanwhile, part of fresh air can be continuously introduced through the upper layer during refrigeration, and it can be ensured that air in a vehicle is fresh while the influence on refrigeration is reduced.

Description

Technical Field

[0001] The present invention relates to the field of automobile technology, and in particular to a method for realizing and controlling an automobile ultra-fast cooling and heating air conditioner. Background Art

[0002] With the popularization of cars and the increasing demand for car comfort, the important role of car air-conditioning in the health and comfort of car drivers and passengers has become increasingly prominent. Car air-conditioning is a device that can cool, heat, ventilate and dehumidify the air in the car to achieve the comfortable temperature and humidity required by people.

[0003] When traditional automobile air conditioners perform multiple functions at the same time, some performance will be reduced and energy consumption will be increased. For example, the public document with the publication number CN105073461 B, the publication date is June 27, 2017, and the patent name is "Heat Pump Automobile Air Conditioning System", which discloses a heat pump automobile air conditioning system, which is connected to the in-vehicle condenser on the downstream side of the in-vehicle evaporator in the HVAC unit on the basic refrigeration refrigerant circuit, and is provided with a first circuit with a second pressure reducing mechanism between the outlet side of the liquid storage tank and one end side of the outdoor heat exchanger, and a second circuit with a solenoid valve connected between the other end side of the outdoor heat exchanger and the suction circuit of the electric compressor and opened during heating, and has a heating refrigerant circuit, which is sequentially connected to the electric compressor, the switching mechanism, the in-vehicle condenser, the liquid storage tank, the first circuit with the second pressure reducing mechanism, the outdoor heat exchanger, and the second circuit with the solenoid valve. Similar heat pump air conditioners will dehumidify during heating, which will affect the heating effect and increase energy consumption.

[0004] So how to maintain a stable and extremely stable foot temperature in a low-temperature environment to achieve a floor heating experience, while taking into account dehumidification to prevent the windows from fogging up and affecting the field of vision; and how to maintain stable cooling in the car in a high-temperature environment while continuously introducing some fresh air to provide a healthier in-car environment, providing customers with a more energy-saving, more comfortable, and more intelligent air-conditioning experience, and meeting the personalized comfort needs of different passengers are the main research directions of this invention. Summary of the invention

[0005] The technical problem to be solved by the present invention is to realize a method and system for controlling an automobile extremely fast cooling and heating air conditioner.

[0006] It can continuously provide extremely fast, stable and warm foot temperature in low-temperature and fog-prone environments, and provide comfortable body temperature through seat heating and steering wheel heating, achieving a floor heating experience, while also taking into account dehumidification to prevent fogging of the windows that affects vision;

[0007] It can quickly achieve cooling in high temperature environments, maintain stable cooling in the car while continuously introducing some fresh air, creating a healthier in-car environment and providing customers with a more energy-saving, comfortable and intelligent air-conditioning experience.

[0008] In order to achieve the above object, the technical solution adopted by the present invention is: a method for controlling automobile floor heating air conditioning, comprising the following steps:

[0009] 1) When the air conditioner is turned on, real-time information on temperature and humidity inside and outside the vehicle is obtained;

[0010] 2) When the air conditioner is cooling, when the difference between the interior temperature Ti and the exterior temperature Ta is greater than the set threshold, the external circulation is turned on; when the difference between the interior temperature Ti and the exterior temperature Ta is less than or equal to the set threshold, the internal circulation is turned on and the timing Tt is started;

[0011] 3) When the air conditioner is heating, the real-time in-vehicle humidity HR and glass temperature Tg are used to calculate the fogging probability F. When F is greater than the set threshold, the double-layer flow air conditioner is controlled to turn on the double-layer flow mode. When F is less than or equal to the set threshold, the internal circulation is turned on.

[0012] After the user turns on the air conditioner, the air conditioning system determines whether to perform cooling or heating based on the user-set temperature T and the outside temperature Ta.

[0013] In the above 3), in the double-layer flow mode, the upper layer of air flow is circulated externally to introduce fresh air from the outside for dehumidification, and the lower layer of air flow is circulated internally to introduce return air from the vehicle for heating.

[0014] When the air conditioner is cooling or heating, the outside air quality data is obtained in real time. When the outside air quality meets the standard, the ventilation function is turned on. The ventilation function starts a timed external circulation at a set interval after the temperature inside the car is maintained at the set temperature.

[0015] The automatic execution steps of the air conditioner are displayed in real time on the interactive device.

[0016] When the air conditioner is in the started state, if the current interior temperature Ti and the exterior temperature Ta both meet the set thresholds, the seat heating and steering wheel heating are turned on, and the gear positions of the seat heating and steering wheel heating are obtained and executed in real time according to the changes in the current interior temperature Ti and the exterior temperature Ta.

[0017] When the seat heating is turned on automatically, only the seat heating of occupied seats is started. After the seat heating is turned on, the seat temperature information is obtained, and the seat heating of the seat is turned off after the temperature exceeds the set threshold. After the steering wheel heating is turned on, the steering wheel temperature information is obtained, and the steering wheel heating is turned off after the temperature exceeds the set threshold.

[0018] A control system for a car floor heating and air conditioning system, the system includes a car air conditioner and a sensor acquisition module, the sensor acquisition module is connected to and outputs a sensing signal to an air conditioning control module of the car air conditioner, the car air conditioner is a double-layer air conditioner, and a separation partition and a guide plate are arranged in the air conditioning box of the double-layer air conditioner, so that the air conditioning box is divided into an upper layer and a lower layer, the sensor acquisition module includes a temperature sensor and a humidity sensor arranged inside and outside the car, and a humidity sensor arranged on the steering wheel and the seat, and the air conditioning control module executes the control method of the car floor heating and air conditioning system.

[0019] An interactive device connected to the air-conditioning control module is provided in the car. The interactive device interacts with the air-conditioning control module in a two-way manner and is used to respond to instructions and display feedback with the car air-conditioning in real time.

[0020] The sensor acquisition module comprises a glass temperature sensor installed on the inner side of the front windshield of the car and attached to the front windshield, and an air quality determination mechanism arranged outside the car.

[0021] The present invention utilizes the dual-layer flow automobile air conditioner, and through the control and stratification of the internal and external circulation air intake, the upper layer can introduce low-humidity fresh air from outside the car to dehumidify and defog the car during heating, and the lower layer can introduce the original high-temperature air in the car to participate in heating in the direction of blowing the feet, which can not only provide extremely fast and stable foot temperature but also reduce air conditioning energy consumption. At the same time, during cooling, part of the fresh air can be continuously introduced through the upper layer, which reduces the impact on cooling while ensuring the freshness of the air in the car. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The following is a brief description of the contents expressed in each figure in the specification of the present invention and the marks in the figure:

[0023] Figure 1 It is a schematic diagram of the composition of the control device of the automobile floor heating and air conditioning system;

[0024] Figure 2 A flow chart of a control method for a vehicle floor heating and air conditioning system;

[0025] Figure 3 A flow chart of an embodiment of a vehicle floor heating and air conditioning system;

[0026] The marks in the above figures are: A201-seat heating module, A202-air conditioning control module, A203-double-flow air conditioning, A204-steering wheel heating module, A205-vehicle computer module, A206-sensor acquisition module. DETAILED DESCRIPTION

[0027] The following is a further detailed description of the specific implementation methods of the present invention, such as the shape, structure, relative position and connection relationship between the various components involved, the function and working principle of each part, the manufacturing process and operation method, etc., through the description of the embodiments with reference to the accompanying drawings, so as to help those skilled in the art to have a more complete, accurate and in-depth understanding of the inventive concept and technical solution of the present invention.

[0028] The core of the automotive floor heating air conditioning control method is the use of double-layer air conditioning. The double-layer air conditioning is divided into upper and lower layers. The separation partition and guide plate added in the air conditioning box realize the layered circulation adjustment of the air flow, which can effectively isolate the fresh air outside the car and the return air inside the car. At the same time, the air conditioning can also adjust the air outlet mode, temperature, air volume and other adjustments; and is controlled by the air conditioning control module. The air conditioning control module can realize the control of the double-layer air conditioning, and at the same time receive the information collected by the sensor and uploaded by the vehicle computer module to make a comprehensive judgment and decision output, and maintain two-way signal interaction with the seat heating module and the steering wheel heating module. The seat heating module can control the opening and closing of the seat heating function, and can feed back the current seat heating status to the air conditioning control module in real time; the steering wheel heating module can control the opening and closing of the steering wheel heating function;

[0029] The signal input end of the air conditioning control module is connected to the sensor module. Each sensor of the sensor module collects data information and transmits it to the air conditioning control module. The information collected by the sensor module includes the temperature inside the car, the temperature outside the car, the humidity inside the car, the seat surface temperature, humidity, steering wheel surface humidity, temperature, etc. After collecting and processing, the sensor module will feed back the collected and processed information to the air conditioning control module in real time. The vehicle module can provide a display interface, where users can set the cycle and temperature, and forward the signal to the air conditioning control module, interact with the air conditioning control module in a two-way manner, and respond to instructions and display feedback in real time.

[0030] When the user uses the air conditioner, the air conditioner control module comprehensively judges the cooling, heating, dehumidification and other needs based on the user's set temperature on the vehicle module and the in-vehicle temperature, outside temperature and in-vehicle humidity collected by the sensor collection module, and sends control instructions to the double-layer air conditioner, seat heating module and steering wheel heating module at the same time;

[0031] When the air conditioning control module determines that there is a cooling demand, it will instruct the double-layer air conditioning to start cooling and at the same time judge based on the in-vehicle temperature Ti and the outside temperature Ta collected by the sensor collection module. When the difference between Ti and Ta is greater than the set threshold, the double-layer air conditioning is controlled to start the external circulation. When the difference between Ti and Ta is less than the set threshold, it switches to the internal circulation and starts the timing Tt.

[0032] When the air conditioning control module determines that there is a heating demand, it will instruct the double-layer air conditioning to start heating and calculate the fogging probability F based on the in-car humidity HR and glass temperature Tg collected by the sensor acquisition module. When F is greater than the set threshold, the double-layer air conditioning is controlled to start the double-layer flow mode, the upper layer of air flow is circulated externally to introduce fresh air from the outside for dehumidification, and the lower layer of air flow is circulated internally to introduce return air from the car for heating; when F is less than the set threshold, it switches to internal circulation;

[0033] The air-conditioning control module will also judge the in-vehicle temperature Ti and the outside temperature Ta collected by the sensor acquisition module. When Ti and Ta both meet the threshold requirements, the air-conditioning control module will synchronously send the seat heating and steering wheel heating requirements to the seat heating module and the steering wheel heating module to simultaneously turn on the auxiliary heating; and when the auxiliary heating function is turned on, the humidity and temperature information on the seat and steering wheel are collected, and the temperature and humidity are combined to determine whether the user is sweating. If the temperature is higher than the set value and the humidity is higher than the set value, it means that the user is sweating, and the corresponding function will be turned off to improve the user experience. Judging the user's sweating state in combination with the humidity can adapt to the temperature feelings and needs of different people.

[0034] The following is a detailed description with reference to the accompanying drawings. Figure 1 As shown, the seat heating module A201 can control the heating of the driver and passenger seats at different gears, and also feed back the heating status to the air conditioning control module A202. The air conditioning control module will send a control command to adjust the seat heating gear according to the demand for seat heating and the current seat heating status;

[0035] The air conditioning control module A202 is the control and judgment center of the present invention. It analyzes and processes the in-vehicle humidity HR, glass temperature Tg, in-vehicle temperature Ti and outside temperature Ta collected and processed by the sensor acquisition module A206, thereby controlling the double-layer air conditioning to operate to a specified state. At the same time, it also sends control instructions to the seat heating module A201 and the steering wheel heating module A204, and feeds back the working status to the vehicle computer module A205 for display;

[0036] The dual-layer air conditioner A203 is an executive unit of the air conditioning system, integrating air intake circulation regulation, temperature regulation, mode regulation and air volume regulation. According to the instructions issued by the air conditioning control module A202, it can control the introduction of fresh air from outside into the car, or close the entry of outside air. At the same time, it can also mix the air inside and outside the car according to the needs, which plays a role in improving the interior environment and adjusting the comfort of the car.

[0037] The steering wheel heating module A204 can control the steering wheel to heat at different gears, and also feed back the heating status to the air conditioning control module A202. The air conditioning control module will issue a control command to adjust the steering wheel heating gear according to the demand for steering wheel heating and the current heating status;

[0038] The vehicle computer module A205 can always display the air outlet status information fed back by the current air conditioning control module A202, and can accept user instructions and convey the user set temperature to the air conditioning control module A202;

[0039] The sensor acquisition module A206 integrates the acquisition of multiple sensors, collects and processes the interior humidity HR, glass temperature Tg, interior temperature Ti, exterior temperature Ta, seat surface temperature and steering wheel surface temperature in real time, and feeds the processed results back to the air conditioning control module A202 for analysis;

[0040] like Figure 2 A flow chart of the extremely fast cooling and heating control method provided by the present application;

[0041] Step A301, detecting the current in-vehicle humidity HR, glass temperature Tg, in-vehicle temperature Ti and outside temperature Ta, as well as the seat heating gear position and steering wheel heating gear position;

[0042] This part mainly involves the air-conditioning control module collecting status feedback information provided by the sensor acquisition module and the associated controller. It can be understood that the vehicle is equipped with an outdoor temperature sensor, an indoor temperature sensor, and an indoor temperature and humidity sensor. The data collected by the sensors will be uploaded to the sensor acquisition module in real time for filtering and other processing, and then fed back to the air-conditioning control module for use; at the same time, the seat heating module and steering wheel heating module equipped in the vehicle will also feed back the current heating gear to the air-conditioning control module in real time, and the vehicle computer module will also feed back the set temperature after the user turns on the air-conditioning to the air-conditioning control module.

[0043] Step A302, calculating the current cooling or heating, fogging probability, and auxiliary heating level according to the collected feedback temperature and heating gear information;

[0044] It can be understood that the air-conditioning control module further analyzes and calculates after receiving the information provided in step A301, so as to obtain the required working state of each actuator. The calculation of the user-set air-conditioning temperature Ts and the outside temperature Ta fed back by the vehicle computer module can determine whether the vehicle is in cooling or heating. The fogging probability F=g(f1(Tg, HR), f2(Tg, Ti)) can be calculated through filtering through the inside humidity HR, the glass temperature Tg, the inside temperature Ti and the outside temperature Ta. The seat heating gear and steering wheel heating gear that need to be requested can be obtained by calibrating the lookup table by the inside temperature Ti and the outside temperature Ta, and then compared with the actual gears fed back by the seat heating module and the steering wheel heating module to obtain the final required heating gear.

[0045] Step A303, issuing corresponding instructions based on the judgment, when there is a cooling demand, maintaining stable cooling in the car while continuously introducing some fresh air; when there is a heating demand, continuing to provide extremely fast, stable and warm foot temperature and comfortable body temperature through seat heating and steering wheel heating, while taking into account dehumidification to prevent fogging of the car windows and affecting the field of vision; and synchronously reporting the execution results to the vehicle computer system for display;

[0046] Combined with the feedback of step A301 and the judgment of step A302, the method of realizing rapid cooling and heating has been calculated. It can be understood that when there is a cooling demand, combined with the comparison between the temperature inside the car Ti and the temperature outside the car Ta, when the difference is greater than the calibration threshold, it is necessary to first switch the double-layer flow air conditioner to the external circulation mode to introduce external air to balance the temperature inside the car, and judge the relationship between the difference and the threshold in real time. When the difference is less than the threshold, the double-layer flow air conditioner is switched to the internal circulation mode to ensure that the car can be cooled down quickly. At the same time, timing is required to avoid the problem of unfresh air in the car caused by long-term internal circulation. When the timing reaches the calibration time, it is necessary to switch to the external circulation mode to introduce fresh air outside the car to improve the environment inside the car; when there is a heating demand, it will be combined with the probability of fogging F in the car. When F is greater than the threshold, it is considered that there is a risk of fogging and dehumidification is required. At this time, in order to ensure the heating effect The result is that the double-layer air conditioner will be switched to double-layer flow mode, and the fresh air outside the car will be introduced into the upper layer of the double-layer flow air conditioner to blow the windows to achieve dehumidification. At the same time, the lower layer of the double-layer flow air conditioner keeps introducing warm air into the car to continue to maintain a stable foot air outlet temperature, so as to ensure a continuous and stable heating effect. In the real-time judgment of F and the threshold, when F is less than the threshold, the double-layer flow air conditioner will be instructed to switch to the internal circulation mode. At the same time, the air-conditioning controller will also send the final required heating gear obtained in A302 to the seat heating module and the steering wheel heating module to control the heating to the specified gear, providing users with a comfortable sensory temperature. At the same time, the execution result will also be fed back to the vehicle computer module for display.

[0047] The present invention aims to provide cooling or heating for users at the fastest speed in combination with the temperature set by the user after the user uses the vehicle and turns on the air conditioner, while taking into account the introduction of fresh air and the control of humidity. At the same time, all thresholds, times, etc. mentioned in the present invention are obtained in road test calibration, aiming to provide users with an intelligent and comfortable car-using environment.

[0048] In order to have a deeper understanding of the present invention, Figure 3 A flowchart of an embodiment is provided for expansion description;

[0049] Step A400: After the user turns on the air conditioner, it is a prerequisite to comprehensively judge whether the air conditioning system needs cooling or heating based on the user set temperature T and the vehicle outside temperature Ta. The air conditioning control module will judge the action that the associated execution component needs to execute based on the cooling and heating status and issue the corresponding instruction;

[0050] Step A401: When it is confirmed that cooling is required, the difference between the interior temperature Ti and the exterior temperature Ta is compared with the calibration threshold. When the difference is greater than the threshold, S401 is executed. During the execution, the difference and the threshold are compared in real time. Otherwise, S402 is executed. During the execution of S402, the timing T1 is synchronized.

[0051] Step A402: S403 needs to be executed every 0.5h of the full calibration time of T1, in order to avoid the vehicle being in the internal circulation mode for a long time and causing no fresh air to be replenished. During the execution of S403, T1 needs to be reset to zero and T2 starts to be counted synchronously;

[0052] Step A403: while executing S403, if T2 reaches the full calibration time of 1 minute, it means that the introduction of fresh air has been completed, exit S403, and return to A401 to enter a new working cycle;

[0053] Step A404: When it is confirmed that heating is required, the air conditioning control module will calculate the fogging probability F based on the in-vehicle humidity HR, the glass temperature Tg and the in-vehicle temperature Ti provided by S404. If F is greater than the calibration threshold, S406 is executed, otherwise S405 is executed. The judgment of A404 is performed in real time during the execution of S405 or S406;

[0054] Step A405: When it is confirmed that heating is needed, the air conditioning control module will combine the interior temperature Ti and the exterior temperature Ta, and obtain a matrix table corresponding to the seat heating and steering wheel heating gear requirements under different thresholds through calibration, and send the corresponding gear to the seat heating module and the steering wheel heating module to execute S407.

[0055] The present invention is described above by way of example in conjunction with the accompanying drawings. It is obvious that the specific implementation of the present invention is not limited to the above-mentioned method. As long as various non-substantial improvements are made using the method concept and technical solution of the present invention, or the concept and technical solution of the present invention are directly applied to other occasions without improvement, they are all within the protection scope of the present invention.

Claims

1. A method for controlling automobile floor heating and air conditioning, characterized in that: The following steps are involved: 1) When the air conditioner is turned on, real-time information on temperature and humidity inside and outside the vehicle is obtained; 2) When the air conditioner is cooling, when the difference between the temperature inside the car Ti and the temperature outside the car Ta is greater than the set threshold, the external circulation is turned on; when the difference between the temperature inside the car Ti and the temperature outside the car Ta is less than or equal to the set threshold, the internal circulation is turned on and the timing Tt is started; 3) When the air conditioner is heating, the real-time in-vehicle humidity HR and glass temperature Tg are used to calculate the fogging probability F. When F is greater than the set threshold, the double-layer flow air conditioner is controlled to turn on the double-layer flow mode. When F is less than or equal to the set threshold, the internal circulation is turned on.

2. The automobile floor heating and air conditioning method according to claim 1, characterized in that: After the user turns on the air conditioner, the air conditioning system automatically determines whether to perform cooling or heating based on the user-set temperature T and the outside temperature Ta.

3. The automobile floor heating and air conditioning method according to claim 1 or 2, characterized in that: In the above 3), in the double-layer flow mode, the upper layer of air flow is circulated externally to introduce fresh air from the outside for dehumidification, and the lower layer of air flow is circulated internally to introduce return air from the vehicle for heating.

4. The automobile floor heating and air conditioning method according to claim 3, characterized in that: When the air conditioner is cooling or heating, the outside air quality data is obtained in real time. When the outside air quality meets the standard, the ventilation function is turned on. The ventilation function starts a timed external circulation at a set interval after the temperature inside the car is maintained at the set temperature.

5. The automobile floor heating and air conditioning method according to claim 4, characterized in that: The automatic execution steps of the air conditioner are displayed in real time on the interactive device.

6. The automobile floor heating and air conditioning method according to claim 1 or 5, characterized in that: When the air conditioner is started, if the current interior temperature Ti and exterior temperature Ta both meet the set thresholds, the seat heating and steering wheel heating are turned on, and the gear positions of the seat heating and steering wheel heating are obtained and executed in real time according to the changes in the current interior temperature Ti and exterior temperature Ta.

7. The automobile floor heating and air conditioning method according to claim 6, characterized in that: When the seat heating is turned on automatically, only the seat heating of the occupied seat is started. The seat heating is turned on to obtain the seat temperature information, and the seat heating of the seat is turned off after the temperature exceeds the set threshold. After turning on the steering wheel heating, the steering wheel temperature information is obtained, and the steering wheel heating is turned off after the steering wheel temperature exceeds the set threshold.

8. A control system for a car floor heating and air conditioning system, characterized in that: The system includes an automobile air conditioner and a sensor acquisition module, wherein the sensor acquisition module is connected to and outputs a sensing signal to an air conditioning control module of the automobile air conditioner. The automobile air conditioner is a double-flow air conditioner, and a separation partition and a guide plate are arranged in the air conditioning box of the double-flow air conditioner, so that the air conditioning box is divided into an upper layer and a lower layer. The sensor acquisition module includes a temperature sensor and a humidity sensor arranged inside and outside the vehicle, and a humidity sensor arranged on the steering wheel and the seat. The air conditioning control module executes the control method of the automobile floor heating air conditioning system as described in any one of claims 1 to 7.

9. The automobile floor heating and air conditioning system according to claim 8, characterized in that: An interactive device connected to the air-conditioning control module is provided in the car. The interactive device interacts with the air-conditioning control module in a two-way manner and is used to respond to instructions and display feedback with the car air-conditioning in real time.

10. The automobile floor heating and air conditioning system according to claim 9, characterized in that: The sensor acquisition module comprises a glass temperature sensor installed on the inner side of the front windshield of the car and attached to the front windshield, and an air quality determination mechanism arranged outside the car.

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