CN111216512B - A temperature correction method, device and equipment for vehicle multi-zone air conditioner - Google Patents

Abstract

The application discloses a temperature correction method, a device and equipment of a vehicle-mounted multi-area air conditioner, the method obtains real-time two-dimensional sunlight intensity information, angle information of each window and area information of each window under the internal environment of a vehicle, obtains a normal vector of each window by utilizing the longitude and latitude information of the vehicle, the angle information of each window and the area information of each window, determines the sunlight intensity of the external environment of the vehicle according to the real-time two-dimensional sunlight intensity information, obtains the sunlight power of each window based on the normal vector, real-time solar azimuth angle, real-time solar altitude angle of each window and the sunlight intensity analysis under the external environment of the vehicle, controls the vehicle-mounted multi-area air conditioner to carry out temperature correction according to the sunlight power of each window, and can realize the temperature correction of the vehicle-mounted multi-area air conditioner only through the sunlight intensity collection of a single two-dimensional sunlight sensor in the vehicle, the comfort of each subarea of the multi-area air conditioner is ensured.

Description

A temperature correction method, device and equipment for vehicle multi-zone air conditioner

technical field

The invention relates to the field of air conditioning control, in particular to a temperature correction method, device and equipment for a vehicle-mounted multi-zone air conditioner.

Background technique

With the development of my country's automobile industry and the increasingly fierce market environment, consumers have higher and higher requirements and experience for the electrical functions of automobiles. In terms of automobile air conditioners, major automobile companies have also launched two zones, three zones, four zones, etc. Multi-zone air conditioning. The increase of air-conditioning partitions also means an increase in hardware cost and software algorithm complexity. Among them, the influence of sunlight intensity on each partition is the first problem to be solved by the multi-zone air-conditioning automatic algorithm. Because of the flexibility and change of the driving direction of the vehicle and the change of the sun irradiation direction with time, the different air-conditioning partitions in the passenger compartment of the car are exposed to sunlight. The influence also changes from time to time. The automatic air-conditioning algorithm needs to correct the influence of the sunlight intensity in each area from time to time to ensure the comfort of each area of the multi-zone air conditioner.

In order to solve the above problems, a three-dimensional sunlight sensor can be used to provide real-time sunlight data for the multi-zone air conditioning algorithm by using the altitude angle, azimuth angle and sunlight intensity of the sunlight collected by the three-dimensional sunlight sensor at all times. However, although the three-dimensional sunlight sensor can realize the control of multi-zone air conditioners, the cost is much higher than that of the two-dimensional sunlight sensor, and it needs a large degree of development.

SUMMARY OF THE INVENTION

In order to overcome the shortcomings and deficiencies of the prior art, the present application provides a temperature correction method, device and equipment for a vehicle multi-zone air conditioner. The power to perform temperature correction function.

In order to achieve the purpose of the above application, the present application provides a temperature correction method for a vehicle-mounted multi-zone air conditioner, the method comprising:

Acquiring real-time two-dimensional sunlight intensity information, angle information of each vehicle window, and area information of each vehicle window under the vehicle interior environment, where the real-time two-dimensional sunlight intensity information is sunlight intensity information collected by a single two-dimensional sunlight sensor;

Using the latitude and longitude information where the vehicle is located, the angle information of each vehicle window and the area information of each vehicle window to obtain the normal vector of each vehicle window;

Determine the sunlight intensity in the external environment where the vehicle is located according to the real-time two-dimensional sunlight intensity information;

The sunlight power of each car window is obtained by analyzing the normal vector, real-time sun azimuth angle, real-time sun altitude angle and the sunlight intensity of the external environment where the vehicle is located based on the normal vector of each car window;

The vehicle multi-zone air conditioner is controlled to perform temperature correction according to the sunlight power of each vehicle window.

On the other hand, the present application also provides a temperature correction device for a vehicle-mounted multi-zone air conditioner, the device comprising:

The signal acquisition module is used to acquire real-time two-dimensional sunlight intensity information, angle information of each car window and area information of each car window in the interior environment of the vehicle, where the real-time two-dimensional sunlight intensity information is the vehicle collected by a single two-dimensional sunlight sensor Sunlight intensity information in the interior environment;

a normal vector determination module, configured to analyze and obtain the normal vector of each car window based on the angle information of each car window and the area information of each car window;

A sunlight intensity determination module, configured to determine the sunlight intensity in the external environment where the vehicle is located according to the real-time two-dimensional sunlight intensity information;

The sunlight power determination module is configured to analyze and obtain the sunlight power of each vehicle window based on the normal vector, the real-time sun azimuth angle, the real-time sun altitude angle, and the sunlight intensity of the external environment where the vehicle is located;

The temperature correction module is used for controlling the vehicle-mounted multi-zone air conditioner to perform temperature correction according to the sunlight power of each vehicle window.

On the other hand, the present application also provides a temperature correction device for a vehicle multi-zone air conditioner, the device includes a processor and a memory, and the memory stores at least one instruction or at least a piece of program, the at least one instruction or the At least one section of program is loaded and executed by the processor to implement the above-mentioned temperature correction method for a multi-zone air conditioner in a vehicle.

Implementing this application has the following beneficial effects:

In the present application, by acquiring the real-time two-dimensional sunlight intensity information, the angle information of each window and the area information of each window in the vehicle interior environment, the latitude and longitude information of the vehicle, the angle information of each window and the The area information of the car window obtains the normal vector of each car window, and the sunlight intensity in the external environment where the vehicle is located is determined according to the real-time two-dimensional sunlight intensity information, based on the normal vector of each car window, real-time sun azimuth, real-time sun The altitude angle and the sunlight intensity in the external environment where the vehicle is located are analyzed to obtain the sunlight power of each car window, and the on-board multi-zone air conditioner is controlled to perform temperature correction according to the sunlight power of each car window, which can realize the operation of a single two-dimensional sunlight sensor. On the basis of this, the function of the on-board zonal air conditioner to correct the temperature according to the sunlight power of each window solves the problem that a single two-dimensional sunlight sensor cannot realize the zonal control of the on-board zonal air conditioner.

Description of drawings

In order to more clearly describe the temperature correction method, device, device and medium for a vehicle multi-zone air conditioner described in this application, the accompanying drawings required by the embodiments will be briefly introduced below. Obviously, the accompanying drawings in the following description The drawings are only some embodiments of the present invention, and for those of ordinary skill in the art, other drawings can also be obtained based on these drawings without any creative effort.

1 is a schematic diagram of an application environment provided by an embodiment of the present application;

FIG. 2 is a flowchart for realizing temperature correction of a vehicle-mounted multi-zone air conditioner provided by an embodiment of the present application;

3 is a schematic diagram of reference coordinates in the process of solving the normal vector of each vehicle window provided by the embodiment of the present application;

FIG. 4 is a schematic diagram of the starting coordinates of a vehicle in a short period of driving time that is close to infinitesimal provided by an embodiment of the present application;

5 is a schematic diagram of the area and angle of each window of a vehicle according to an embodiment of the present application;

FIG. 6 is a flow chart of controlling the temperature correction of the vehicle-mounted multi-zone air conditioner according to the sunlight power of each vehicle window according to the embodiment of the present application;

7 is a flowchart for realizing temperature correction of a vehicle-mounted multi-zone air conditioner provided by another embodiment of the present application;

8 is a flowchart for realizing temperature correction of a vehicle-mounted multi-zone air conditioner provided by another embodiment of the present application;

FIG. 9 is a schematic diagram of a temperature correction device for a vehicle-mounted multi-zone air conditioner according to another embodiment of the present application.

Detailed ways

In order to make those skilled in the art better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described The embodiments are only a part of the embodiments of the present application, but not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the scope of protection of this application.

It should be noted that the terms "first", "second" and the like in the description and claims of the present invention and the above drawings are used to distinguish similar objects, and are not necessarily used to describe a specific sequence or sequence. It is to be understood that the data so used may be interchanged under appropriate circumstances such that the embodiments of the invention described herein can be practiced in sequences other than those illustrated or described herein. Furthermore, the terms "comprising" and "having" and any variations thereof, are intended to cover non-exclusive inclusion, for example, a process, method, system, product or server comprising a series of steps or units is not necessarily limited to those expressly listed Rather, those steps or units may include other steps or units not expressly listed or inherent to these processes, methods, products or devices.

In order to realize the technical solution of the present application and allow more engineering technicians to easily understand and apply the present application, the working principle of the present application will be further described with reference to specific embodiments.

The present application can be applied to the field of automobile air conditioners, and specifically can be applied to the field of temperature correction of automobile multi-zone air conditioners.

Please refer to FIG. 1 , which is a schematic diagram of an application environment provided by an embodiment of the present application. As shown in FIG. 1 , the application environment at least includes a vehicle multi-zone air conditioner 01 , a single two-dimensional sunlight sensor 02 , and a controller 03 . The vehicle-mounted multi-zone air conditioner 01 can be used to adjust the temperature of the corresponding area around each window inside the vehicle. The vehicle-mounted multi-zone air conditioner includes two-zone, three-zone, four-zone and other multi-zone air conditioners. A single two-dimensional sunlight sensor 02 is used to collect the sunlight intensity of a single point. The controller 03 is connected to the vehicle-mounted multi-zone air conditioner 01, and can analyze and obtain temperature corrections in different areas of the vehicle-mounted multi-zone air conditioner 01 according to the obtained information, thereby controlling the vehicle-mounted multi-zone air conditioner 01 to output. The controller 03 can obtain information by connecting with the vehicle terminal, or by directly connecting with a single two-dimensional sunlight sensor 02, or by connecting with the vehicle terminal and a single two-dimensional sunlight sensor 02. .

In the above application scenario, an embodiment of a temperature correction method for a vehicle-mounted multi-zone air conditioner of the present application is first introduced. FIG. 2 is a flowchart for realizing temperature correction of a vehicle-mounted multi-zone air conditioner provided by an embodiment of the present application, as shown in FIG. 2, the method includes:

S101: The controller of the vehicle acquires real-time two-dimensional sunlight intensity information, angle information of each vehicle window, and area information of each vehicle window in the vehicle interior environment.

Specifically, the real-time two-dimensional sunlight intensity information may include single-point sunlight intensity information inside the vehicle collected by a single two-dimensional sunlight sensor. The angle information of each window refers to the number of acute angles of inclination formed by each window and the horizontal plane.

S103: The controller obtains the normal vector of each vehicle window by using the longitude and latitude information of the vehicle, the angle information of each vehicle window, and the area information of each vehicle window.

In another embodiment, the controller analyzing and obtaining the normal vector of each window based on the angle information of each window and the area information of each window may include:

S1031: The controller confirms whether the longitude and latitude information where the vehicle is located is valid.

The longitude and latitude information of the vehicle is collected by the navigation system, and the controller first confirms whether the information is valid after receiving the collected longitude and latitude information. The driving direction of the vehicle can be understood as the motion vector of the vehicle in a short period of time approaching infinity. The motion vector of the vehicle is determined according to the longitude and latitude of the first and last time points of the short period of time approaching infinity, so the validity of the longitude and latitude information will be directly Affects the accuracy of the solution of the vehicle's driving direction. When the latitude and longitude information cannot be updated in real time, the vehicle driving direction information obtained by using the latitude and longitude information that cannot be updated in real time is unreliable. For example, when the vehicle is driving in a mountainous area with poor signal, the currently received latitude and longitude information is the information collected by the navigation system ten minutes ago. The driving direction of the vehicle ten minutes ago may be inconsistent with the current driving direction, and the received longitude and latitude information is delayed The case is that the latitude and longitude information is invalid.

S1033 : When the controller confirms that the longitude and latitude information where the vehicle is located is valid, the driving direction of the vehicle can be obtained by solving according to the longitude and latitude information where the vehicle is located, and the angle Ad between the driving direction of the vehicle and the due south direction is obtained.

In the process of solving the normal vector of each car window, the normal vector solution of each car window is centered on the vehicle, and the reference coordinates are shown in Figure 3. First, solve the angle between the driving direction of the vehicle and the south direction:

Among them, as shown in Figure 4, x1 is the abscissa of the starting point within a short driving time period approaching infinitesimal, y1 is the ordinate of the starting point within a short driving time period approaching infinity, and x2 is The abscissa of the end point in a short driving time period approaching infinitesimal, and y2 is the ordinate of the end point in a short driving time period approaching infinity.

S1035 : The normal vector of each window can be obtained by the included angle between the traveling direction of the vehicle and the due south direction, the area of each window, and the angle of each window. As shown in Figure 5, the area of the front windshield is A, the inclination angle of the front windshield to the horizontal plane is a, the area of the rear windshield is B, the inclination angle of the rear windshield to the horizontal plane is b, the area of the left window is C, and the left side window area is C. The side window glass inclination angle c, the right window area D, the right window glass inclination angle d, and the ceiling area E, then the normal vector of each window is shown in Table 1.

Table 1

S105: The controller determines the sunlight intensity in the external environment where the vehicle is located according to the real-time two-dimensional sunlight intensity information.

The real-time 2D sunlight intensity is the sunlight intensity inside the vehicle collected by a single 2D sunlight sensor. The sunlight intensity in the external environment where the vehicle is located is then reversed by the collected sunlight intensity inside the vehicle. The specific formula is as follows:

Sunlight intensity=the intensity of sunlight inside the vehicle collected by the two-dimensional sunlight sensor/the cosine of the normal vector of the window where the two-dimensional sunlight sensor is installed and the normal vector of the incident light from the sun.

The two-dimensional sunlight sensor can be installed under each window inside the vehicle, and the installation in different positions will have an impact on the back calculation. Using the real-time sun azimuth and real-time sun elevation angle, the normal vector of the incident sun light can be solved. Specifically, to find the normal vector of the car window on which the two-dimensional sunlight sensor is installed, reference may be made to the normal vector formula of each car window in Table 1. The sun azimuth is the angle between the ground projection of the incident light of the sun and the preset direction. In this embodiment, the preset direction is the south direction. The solar elevation angle is the angle between the incident direction of the sun's rays and the ground plane, that is, the angle between the tangential plane of the earth's surface where the sun's rays at the incident point pass through the incident point and connect to the center of the earth.

S107: The controller obtains the sunlight power of each vehicle window based on the normal vector of each vehicle window, the real-time sun azimuth angle, the real-time sun altitude angle, and the sunlight intensity in the external environment where the vehicle is located.

Specifically, the sunlight intensity of each car window can be calculated based on the normal vector of each car window, the real-time sun azimuth angle and the real-time sun altitude angle. The sunlight power of each window can be obtained by multiplying the sunlight intensity of each window by the corresponding area of each window. The sunlight intensity of each car window is the sunlight intensity after sunlight enters each car window. The angle of sunlight entering each car window is different, resulting in different sunlight intensity of each car window. The normal vector of each car window and the real-time sun azimuth angle are used. And the real-time sun altitude angle can solve the sunlight intensity of each window.

In another embodiment, if the vehicle has a sun shade, the method further includes:

S1081: Obtain the opening information of the sunshade of the ceiling and side windows.

Specifically, the opening degree information of the ceiling and side window shades refers to the opening ratio of the ceiling and side window shades. Under the sun, people sitting in the car will be exposed to the sun. The roof and sunshade play a good role in sun protection, but they will also reduce the brightness of the car. Vehicle occupants can increase comfort by opening or closing the roof and side window shades.

S1083: Determine the sunlight power of each car window according to the normal vector, sun azimuth angle, sun altitude angle of each car window, the sunlight intensity in the external environment where the vehicle is located, and the opening degree information of the roof and side window sunshades. The sunlight power of each window and ceiling can be obtained by multiplying the sunlight intensity of each window by the corresponding area of each window that is not blocked by the sunshade and by multiplying the sunlight intensity of the ceiling by the exposed area of the roof.

In additional embodiments, the method further includes:

S1091: Determine whether the vehicle is in a preset operating condition according to the real-time two-dimensional sunlight intensity signal.

Specifically, the preset working condition is a working condition in which sunlight does not affect the corresponding area around each window, for example: the vehicle is in a tunnel or a bridge hole, and the sunlight intensity received is balanced everywhere; when the vehicle is driving at night, there is no sunlight to illuminate .

S1093: When the vehicle is in a preset working condition, the on-board multi-zone air conditioner is controlled to perform temperature correction according to the same sunlight power in each zone.

S1095: When the vehicle is not in the preset working condition, the controller controls the vehicle-mounted multi-zone air conditioner to perform temperature correction according to the sunlight power of each vehicle window.

S110: The controller controls the vehicle-mounted multi-zone air conditioner to perform temperature correction according to the sunlight power of each vehicle window.

The sunlight power of each car window is different due to the different angles of each car window and the incident light. The controller adjusts the on-board multi-zone air conditioner to perform temperature correction according to the sunlight power of each car window. Different car windows correspond to different car air conditioners in the car multi-zone air conditioner. For example, the sunlight power of the left window corresponds to the car air conditioner of the driver's seat, the sunlight power of the right window corresponds to the car air conditioner of the passenger seat, and the sunlight power of the front windshield corresponds to the car air conditioner of the passenger seat. In-vehicle air conditioners, etc., corresponding to the position between the driver's seat and the passenger seat.

In another embodiment, as shown in FIG. 6 , controlling the vehicle-mounted multi-zone air conditioner to perform temperature correction according to the sunlight power of each window includes:

S1101: Perform temperature correction on the temperature of the corresponding area around each vehicle window according to the sunlight power of each vehicle window to obtain the output temperature of the corresponding area.

S1103: Correct the air conditioner in the corresponding area according to the output temperature to output.

The above embodiment obtains the real-time two-dimensional sunlight intensity information, the angle information of each car window, and the area information of each car window under the vehicle interior environment, and uses the obtained information, the real-time sun azimuth angle, and the real-time sun altitude angle to solve to obtain each vehicle. The sunlight power of the windows, and then adjust the temperature of the vehicle multi-zone air conditioner according to the sunlight power of each window, can realize the temperature correction of the vehicle multi-zone air conditioner only by collecting the sunlight intensity of a single two-dimensional sunlight sensor in the vehicle, and ensure that the multi-zone air conditioner Zoning comfort.

In another embodiment of the temperature correction method, as shown in FIG. 7 , the method further includes:

S201: Store the real-time driving direction of the vehicle.

The angle between the driving direction of the vehicle and the south direction

Among them, as shown in Figure 4, x1 is the abscissa of the starting point within a short driving time period approaching infinitesimal, y1 is the ordinate of the starting point within a short driving time period approaching infinity, and x2 is The abscissa of the end point in a short driving time period approaching infinitesimal, and y2 is the ordinate of the end point in a short driving time period approaching infinity. The above formula is in the case of x2≠x1 and y2≠y1, but not applicable to the case of x2=x1 and y2=y1.

S203 : when the vehicle speed is zero, obtain the vehicle traveling direction at the time when the vehicle speed is zero at the time when the previous vehicle speed is not zero.

The vehicle speed is zero when x2=x1 and y2=y1, which means that the longitude and latitude of the vehicle do not change during a short driving time period approaching infinitesimal. When the vehicle stops moving, it cannot be determined by the latitude and longitude of the first and last time points of a small period of time approaching infinitesimal. However, the vehicle is moving before it stops, and the driving direction of the last movement of the vehicle before the stop can be used as the vehicle direction when the vehicle stops and the speed is zero.

S205: Determine the sun azimuth angle and the sun altitude angle according to the time information, the longitude and latitude information where the vehicle is located, and the driving direction of the vehicle when the vehicle speed is not zero in the previous time period.

Specifically, the sun azimuth is the angle between the ground projection of the incident light of the sun and the preset direction. In this embodiment, the preset direction is the south direction. The solar elevation angle is the angle between the incident direction of the sun's rays and the ground plane, that is, the angle between the tangential plane of the earth's surface where the sun's rays at the incident point pass through the incident point and connect to the center of the earth.

S207: The controller of the vehicle acquires real-time two-dimensional sunlight intensity information, angle information of each vehicle window, and area information of each vehicle window in the vehicle interior environment.

The real-time two-dimensional sunlight intensity information is the single-point sunlight intensity information inside the vehicle collected by a single two-dimensional sunlight sensor. The angle information of each window refers to the number of acute angles of inclination formed by each window and the horizontal plane.

S209: The controller analyzes and obtains the normal vector of each vehicle window based on the angle information of each vehicle window and the area information of each vehicle window.

The normal vector of each window is the same as in Table 1. It should be noted that Ad is the angle between the driving direction and the due south direction when the vehicle speed is not zero in the previous period before the vehicle stops.

S211: The controller determines the sunlight intensity in the external environment where the vehicle is located according to the real-time two-dimensional sunlight intensity information.

The real-time 2D sunlight intensity is the sunlight intensity inside the vehicle collected by a single 2D sunlight sensor. The sunlight intensity in the external environment where the vehicle is located is then reversed by the collected sunlight intensity inside the vehicle. The specific formula is as follows:

Sunlight intensity=the intensity of sunlight inside the vehicle collected by the two-dimensional sunlight sensor/the cosine of the normal vector of the window where the two-dimensional sunlight sensor is installed and the normal vector of the incident light from the sun.

The two-dimensional sunlight sensor can be installed under each window inside the vehicle, and the installation in different positions will have an impact on the back calculation. Using the real-time sun azimuth and real-time sun elevation angle, the normal vector of the incident sun light can be solved. Specifically, to find the normal vector of the car window on which the two-dimensional sunlight sensor is installed, reference may be made to the normal vector formula of each car window in Table 1.

S213: The controller obtains the sunlight power of each vehicle window based on the normal vector of each vehicle window, the real-time sun azimuth angle, the real-time sun altitude angle, and the sunlight intensity in the external environment where the vehicle is located.

Specifically, the sunlight intensity of each car window can be calculated based on the normal vector of each car window, the real-time sun azimuth angle and the real-time sun altitude angle. The sunlight power of each window can be obtained by multiplying the sunlight intensity of each window by the corresponding area of each window. The sunlight intensity of each car window is the sunlight intensity after sunlight enters each car window. The angle of sunlight entering each car window is different, resulting in different sunlight intensity of each car window. The normal vector of each car window and the real-time sun azimuth angle are used. And the real-time sun altitude angle can solve the sunlight intensity of each window.

S215: The controller controls the vehicle-mounted multi-zone air conditioner to perform temperature correction according to the sunlight power of each vehicle window.

The above-mentioned embodiment determines the sun azimuth angle and the sun altitude angle by using the stored vehicle driving direction at the time when the vehicle speed is zero and when the previous vehicle speed is not zero, and then obtains the real-time two-dimensional sunlight intensity information under the internal environment of the vehicle, and each window of the vehicle. According to the angle information and the area information of each car window, the normal vector of each car window is obtained, and the sunlight intensity in the external environment where the vehicle is located is determined according to the real-time two-dimensional sunlight intensity information, and finally the sunlight power of each car window is determined according to the above information. Based on the sunlight power of each window, the temperature of the multiple zones of the vehicle multi-zone air conditioner can be corrected, so that the temperature of the vehicle multi-zone air conditioner can be realized by only collecting the sunlight intensity of a single two-dimensional sunlight sensor in the vehicle when the vehicle is running or stopped. Correction to ensure the comfort of each zone of the multi-zone air conditioner.

In another embodiment of the temperature correction method, as shown in FIG. 8 , the method includes:

S301: The controller of the vehicle acquires real-time two-dimensional sunlight intensity information, angle information of each vehicle window, and area information of each vehicle window in the vehicle interior environment.

The real-time two-dimensional sunlight intensity information is the single-point sunlight intensity information inside the vehicle collected by a single two-dimensional sunlight sensor. The angle information of each window refers to the number of acute angles of inclination formed by each window and the horizontal plane.

S3031: The controller acquires vehicle gradient information.

S3033: When the vehicle gradient in the vehicle gradient information is zero, the controller determines the normal vector of each vehicle window according to the angle signal of each vehicle window and the area signal of each vehicle window.

S3035: When the vehicle slope is not zero, the controller obtains the normal vector of each vehicle window based on the angle information of each vehicle window, the area information of each vehicle window and the vehicle slope information by analysis.

According to the latitude and longitude information, the driving direction of the vehicle can be obtained by solving, and the angle Ad between the driving direction of the vehicle and the due south direction can be obtained.

In the process of solving the normal vector of each car window, the normal vector solution of each car window is centered on the vehicle, and the reference coordinates are shown in Figure 3. First, solve the angle between the driving direction of the vehicle and the south direction:

Among them, as shown in Figure 4, x1 is the abscissa of the starting point within a short driving time period approaching infinitesimal, y1 is the ordinate of the starting point within a short driving time period approaching infinity, and x2 is The abscissa of the end point in a short driving time period approaching infinitesimal, and y2 is the ordinate of the end point in a short driving time period approaching infinity.

The normal vector of each window can be obtained from the angle between the vehicle's driving direction and the south direction, the area information of each window, the angle information of each window, and the vehicle slope information. As shown in Figure 5, the area of the front windshield is A, the inclination angle of the front windshield to the horizontal plane is a, the area of the rear windshield is B, the inclination angle of the rear windshield to the horizontal plane is b, the area of the left window is C, and the left side window area is C. The side window glass inclination angle c, the right window area D, the right window glass inclination angle d, the roof area E, and the vehicle slope r, the normal vector of each window is shown in Table 2.

Table 2

window entry normal vector for each window front windshield A(sin(a-r)*cosAd,-sin(a-r)*sinAd,cos(a-r)) rear windshield B(-sin(b+r)*cosAd,sin(b+r)*sinAd,cos(b+r)) left window C(-sinc*cosAd,-sinc*sinAd,cosc) right window D(sind*cosAd,sind*sinAd,cosd) ceiling E(sinrcosAd,sinrsinAd,cosr)

S305: The controller determines the sunlight intensity in the external environment where the vehicle is located according to the real-time two-dimensional sunlight intensity information.

The real-time 2D sunlight intensity is the sunlight intensity inside the vehicle collected by a single 2D sunlight sensor. The sunlight intensity in the external environment where the vehicle is located is then reversed by the collected sunlight intensity inside the vehicle. The specific formula is as follows:

Sunlight intensity=the intensity of sunlight inside the vehicle collected by the two-dimensional sunlight sensor/the cosine of the normal vector of the window where the two-dimensional sunlight sensor is installed and the normal vector of the incident light from the sun.

The two-dimensional sunlight sensor can be installed under each window inside the vehicle, and the installation in different positions will have an impact on the back calculation. Using the real-time sun azimuth and real-time sun elevation angle, the normal vector of the incident sun light can be solved. Specifically, to find the normal vector of the car window on which the two-dimensional sunlight sensor is installed, reference may be made to the normal vector formula of each car window in Table 1. The sun azimuth is the angle between the ground projection of the incident light of the sun and the preset direction. In this embodiment, the preset direction is the south direction. The solar elevation angle is the angle between the incident direction of the sun's rays and the ground plane, that is, the angle between the tangential plane of the earth's surface where the sun's rays at the incident point pass through the incident point and connect to the center of the earth.

S307: The controller obtains the sunlight power of each vehicle window based on the normal vector of each vehicle window, the real-time sun azimuth angle, the real-time sun altitude angle, and the sunlight intensity in the external environment where the vehicle is located.

Specifically, the sunlight intensity of each car window can be calculated based on the normal vector of each car window, the real-time sun azimuth angle and the real-time sun altitude angle. The sunlight power of each window can be obtained by multiplying the sunlight intensity of each window by the corresponding area of each window. The sunlight intensity of each car window is the sunlight intensity after sunlight enters each car window. The angle of sunlight entering each car window is different, resulting in different sunlight intensity of each car window. The normal vector of each car window and the real-time sun azimuth angle are used. And the real-time sun altitude angle can solve the sunlight intensity of each window.

S309: The controller controls the vehicle-mounted multi-zone air conditioner to perform temperature correction according to the sunlight power of each vehicle window.

The sunlight power of each car window is different due to the different angles of each car window and the incident light. The controller adjusts the on-board multi-zone air conditioner to perform temperature correction according to the sunlight power of each car window. Different car windows correspond to different car air conditioners in the car multi-zone air conditioner. For example, the sunlight power of the left window corresponds to the car air conditioner of the driver's seat, the sunlight power of the right window corresponds to the car air conditioner of the passenger seat, and the sunlight power of the front windshield corresponds to the car air conditioner of the passenger seat. In-vehicle air conditioners, etc., corresponding to the position between the driver's seat and the passenger seat.

In the above embodiment, by acquiring real-time two-dimensional sunlight intensity information, angle information of each vehicle window, area information of each vehicle window, and vehicle slope information in the vehicle interior environment, the normal vector of each vehicle window is firstly obtained, and the obtained vehicle window is used to obtain the normal vector. Information and the real-time sun azimuth angle and real-time sun altitude angle are solved to obtain the sunlight power of each window, and then the temperature of the multi-zone air conditioner can be adjusted according to the sunlight power of each window, so that the vehicle can only pass a single two-dimensional vehicle in the vehicle at any slope. The sunlight intensity collection of the sunlight sensor realizes the temperature correction of the vehicle multi-zone air conditioner and ensures the comfort of each zone of the multi-zone air conditioner.

The present application further provides an embodiment of a temperature correction device for a vehicle-mounted multi-zone air conditioner, as shown in FIG. 9 , the device includes:

The signal acquisition module 601 is used to acquire real-time two-dimensional sunlight intensity information, angle information of each car window and area information of each car window under the vehicle interior environment, the real-time two-dimensional sunlight intensity information is collected by a single two-dimensional sunlight sensor Sunlight intensity information in the vehicle interior environment.

The normal vector determination module 603 is configured to analyze and obtain the normal vector of each vehicle window based on the angle information of each vehicle window and the area information of each vehicle window.

The sunlight intensity determination module 605 is configured to determine the sunlight intensity in the external environment where the vehicle is located according to the real-time two-dimensional sunlight intensity information.

The sunlight power determination module 607 is configured to analyze and obtain the sunlight power of each vehicle window based on the normal vector of each vehicle window, the real-time sun azimuth angle, the real-time sun altitude angle, and the sunlight intensity in the external environment where the vehicle is located.

The temperature correction module 609 is configured to control the vehicle-mounted multi-zone air conditioner to perform temperature correction according to the sunlight power of each vehicle window.

The present application further provides an embodiment of a temperature correction device for a vehicle-mounted multi-zone air conditioner, the device includes a processor and a memory, and the memory stores at least one instruction or at least a piece of program, the at least one instruction, the At least one section of program, the code set or the instruction set is loaded and executed by the processor to implement a temperature correction method for a vehicle multi-zone air conditioner.

It can be seen from the above-mentioned embodiments of the temperature correction method, device and device for a vehicle multi-zone air conditioner provided by the present application that the present application obtains the real-time two-dimensional sunlight intensity information, the angle information of each vehicle window and the area information, and use the obtained information and the real-time sun azimuth and real-time sun altitude angle to obtain the sunlight power of each window, and then adjust the temperature of the vehicle multi-zone air conditioner according to the sunlight power of each window. The sunlight intensity acquisition of the two-dimensional sunlight sensor realizes the temperature correction of the vehicle multi-zone air conditioner, ensures the comfort of each partition of the multi-zone air conditioner, and solves the problem of high cost of using the three-dimensional sunlight sensor.

It should be noted that: the above-mentioned order of the embodiments of the present invention is only for description, and does not represent the advantages and disadvantages of the embodiments. And the foregoing describes specific embodiments of the present specification. Other embodiments are within the scope of the appended claims. In some cases, the actions or steps recited in the claims can be performed in an order different from that in the embodiments and still achieve desirable results. Additionally, the processes depicted in the figures do not necessarily require the particular order shown, or sequential order, to achieve desirable results. In some embodiments, multitasking and parallel processing are also possible or may be advantageous.

Each embodiment in this specification is described in a progressive manner, and the same and similar parts between the various embodiments may be referred to each other, and each embodiment focuses on the differences from other embodiments. In particular, for the apparatus, server, client and system embodiments, since they are basically similar to the method embodiments, the description is relatively simple, and reference may be made to some descriptions of the method embodiments for related parts.

Those of ordinary skill in the art can understand that all or part of the steps of implementing the above embodiments can be completed by hardware, or can be completed by instructing relevant hardware through a program, and the program can be stored in a computer-readable storage medium. The storage medium mentioned may be a read-only memory, a magnetic disk or an optical disk, etc.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection of the present invention. within the range.

Claims (10)

1. A temperature correction method of an on-board multi-zone air conditioner is characterized by comprising the following steps:

acquiring real-time two-dimensional sunlight intensity information, angle information of each window and area information of each window under an internal environment of the vehicle, wherein the real-time two-dimensional sunlight intensity information is acquired by a single two-dimensional sunlight sensor;

obtaining normal vectors of all windows by utilizing the longitude and latitude information of the vehicle, the angle information of all windows and the area information of all windows;

determining the sunlight intensity of the vehicle in the external environment according to the real-time two-dimensional sunlight intensity information; the sunlight intensity of the external environment where the vehicle is located is the ratio of the sunlight intensity information collected by the single two-dimensional sunlight sensor to the cosine of the normal vector of the vehicle window provided with the two-dimensional sunlight sensor and the normal vector of the incident sunlight;

analyzing and obtaining the sunlight power of each window based on the normal vector, the real-time solar azimuth angle and the real-time solar altitude angle of each window and the sunlight intensity of the external environment where the vehicle is located;

and controlling the vehicle-mounted multi-region air conditioner to correct the temperature according to the sunlight power of each vehicle window.

2. The method according to claim 1, wherein before controlling the vehicle-mounted multi-zone air conditioner to perform temperature correction according to the sunlight power of each vehicle window, the method further comprises the following steps:

judging whether the vehicle is in a preset working condition or not according to the real-time two-dimensional sunlight intensity signal, wherein the preset working condition is a working condition that sunlight has no influence on corresponding areas around each window;

when the vehicle is in the preset working condition, controlling the vehicle-mounted multi-zone air conditioner to correct the temperature according to the same sunlight power of each zone;

otherwise, controlling the vehicle-mounted multi-region air conditioner to perform corresponding temperature correction according to the sunlight power of each vehicle window.

3. The method according to claim 1, wherein the obtaining the normal vector of each window by using the longitude and latitude information of the vehicle, the angle information of each window and the area information of each window comprises:

confirming whether the longitude and latitude information of the vehicle is effective or not;

when the vehicle is effective, the driving direction of the vehicle is obtained according to the longitude and latitude information of the vehicle;

and obtaining a normal vector of each window by using the driving direction of the vehicle, the angle information based on each window and the area information of each window.

4. The method of claim 1, further comprising:

when the vehicle speed is zero, acquiring the vehicle running direction at the moment when the last vehicle speed is not zero when the vehicle speed is zero;

and determining a sun azimuth angle and a sun altitude angle according to the time information, the longitude and latitude information of the vehicle and the vehicle running direction when the vehicle speed is not zero in the previous time period.

5. The method of claim 1, wherein before obtaining the normal vector of each window by using the longitude and latitude information of the vehicle, the angle information of each window, and the area information of each window, the method further comprises:

acquiring vehicle gradient information;

when the vehicle gradient is zero in the vehicle gradient information, determining a normal vector of each window by utilizing longitude and latitude information of the vehicle, the angle signal of each window and the area signal of each window;

and when the vehicle gradient is not zero, executing a step of determining a normal vector of each window according to the longitude and latitude information of the vehicle, the angle signal of each window, the area signal of each window and the vehicle gradient information.

6. The method of claim 1, wherein before controlling the on-board multi-zone air conditioner for temperature correction according to the solar power of each window, the method further comprises:

when the sunshade curtain exists in the vehicle, acquiring opening information of a roof and the sunshade curtain of a side window;

and determining the sunlight power of each window according to the normal vector of each window, the solar azimuth angle, the solar altitude angle, the sunlight intensity of the external environment where the vehicle is located and the opening information of the roof and the side window sunshade.

7. The method of claim 1, wherein the controlling the on-board multi-zone air conditioner for temperature correction according to the solar power of each window comprises:

correcting the temperature of the corresponding area around each window according to the sunlight power of each window to obtain the output temperature of the corresponding area;

and correcting the air conditioner in the corresponding area according to the output temperature for outputting.

8. The method of claim 1, wherein the acquiring a real-time two-dimensional solar intensity signal in the vehicle interior environment comprises:

a single two-dimensional solar sensor is utilized to acquire a real-time two-dimensional solar intensity signal in the vehicle interior environment.

9. A temperature correction apparatus of an in-vehicle multi-zone air conditioner, the apparatus comprising:

the system comprises a signal acquisition module, a signal processing module and a control module, wherein the signal acquisition module is used for acquiring real-time two-dimensional sunlight intensity information, angle information of each window and area information of each window in the vehicle internal environment, and the real-time two-dimensional sunlight intensity information is the sunlight intensity information in the vehicle internal environment acquired by a single two-dimensional sunlight sensor;

the normal vector determining module is used for obtaining normal vectors of all windows by utilizing longitude and latitude information of the vehicle, angle information of all windows and area information of all windows;

the sunlight intensity determining module is used for determining the sunlight intensity of the vehicle in the external environment according to the real-time two-dimensional sunlight intensity information; the sunlight intensity of the vehicle in the external environment is the ratio of the sunlight intensity information collected by the single two-dimensional sunlight sensor to the cosine of the normal vector of the vehicle window provided with the two-dimensional sunlight sensor and the normal vector of the incident sunlight;

the sunlight power determining module is used for analyzing and obtaining the sunlight power of each window based on the normal vector, the real-time solar azimuth angle and the real-time solar altitude angle of each window and the sunlight intensity of the external environment where the vehicle is located;

and the temperature correction module is used for controlling the vehicle-mounted multi-region air conditioner to correct the temperature according to the sunlight power of each vehicle window.

10. An apparatus for temperature correction of an in-vehicle multi-zone air conditioner, characterized in that the apparatus comprises a processor and a memory, wherein the memory stores at least one instruction or at least one program, and the at least one instruction or the at least one program is loaded and executed by the processor to realize the method for temperature correction of the in-vehicle multi-zone air conditioner according to any one of claims 1 to 8.

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