Method for regulating and controlling light transmittance of electrochromic window

Abstract

The invention discloses a light transmittance regulation and control method for an electrochromic window in the technical field of cab ergonomics, and aims to solve the technical problem that cab glass cannot meet the requirement for the sight of a driver and the requirement for proper sunlight shielding at the same time. The method comprises the steps that the temperature rise condition after sunlight enters a cab is evaluated according to the difference value between the environment temperature affected by the sunlight and the set temperature of an air conditioner, and then a first regulation and control value for resisting the temperature rise effect is set. The ultraviolet intensity represents the ultraviolet radiation energy, the ultraviolet index reflects the potential injury intensity to the human skin, the injury of the current ultraviolet intensity to the human skin can be obtained through the two kinds of data, and then a second regulation value can be obtained. And considering the action proportion of the two regulation values to obtain a composite third regulation value. And the sight line requirement of a driver and the proper sunshine shielding requirement can be considered. And finally, a proper cab temperature environment is created under the condition that the sight of a driver is not shielded.

Description

Technical Field

[0001] The present invention relates to a method for regulating the light transmittance of an electrochromic window, and belongs to the technical field of cab ergonomics. Background Art

[0002] Most of the existing glass for excavator cabs is made of fully transparent material. Under sunlight irradiation, it is easy to cause the driver to be injured by ultraviolet rays and the temperature inside the cab to be too high, resulting in an excessive working load of the air conditioner; at the same time, if a sunshade blocks the window, the driver's line of sight will be restricted.

[0003] Therefore, the existing cab glass cannot meet both the driver's line-of-sight requirements and the requirement of properly blocking sunlight. Summary of the Invention

[0004] The purpose of this application is to overcome the deficiencies in the prior art and provide a method for regulating the light transmittance of an electrochromic window that blocks sunlight without excessively affecting the cab line of sight.

[0005] To achieve the above purpose, the following technical solutions are adopted in this application:

[0006] In the first aspect, this application provides a method for regulating the light transmittance of an electrochromic window, including

[0007] Obtaining the ambient temperature and the air-conditioning set temperature, and obtaining a first regulation value according to the ambient temperature and the air-conditioning set temperature;

[0008] Obtaining the ultraviolet intensity and the ultraviolet index, and obtaining a second regulation value according to the ultraviolet intensity and the ultraviolet index;

[0009] Fusing the first regulation value and the second regulation value to obtain a third regulation value, and regulating the light transmittance of the window according to the third regulation value.

[0010] In some embodiments of the first aspect, the first regulation value is obtained by calculating according to the following formula:

[0011] ,

[0012] In the formula, is the first regulation value, is the ambient temperature, is the air-conditioning set temperature.

[0013] In some embodiments of the first aspect, the second regulation value is obtained by calculating according to the following formula:

[0014] ,

[0015] In the formula, is the second regulation value, is the ultraviolet intensity, is the regulation coefficient, is the ultraviolet index.

[0016] In some embodiments of the first aspect, the third regulation value is obtained by calculating according to the following formula:

[0017] ,

[0018] In the formula, is the third regulation value, is the first regulation value, is the second regulation value, and are the weight coefficients of the first regulation value and the second regulation value respectively.

[0019] In some embodiments of the first aspect, obtaining the third regulation value by fusing the first regulation value and the second regulation value includes,

[0020] obtaining a corrected temperature threshold and a regulation correction value;

[0021] obtaining an initial third regulation value according to the first regulation value and the second regulation value;

[0022] In response to the difference between the ambient temperature and the air conditioner set temperature reaching the corrected temperature threshold, the regulation correction value corrects the initial third regulation value to obtain a final third regulation value.

[0023] In some embodiments of the first aspect,

[0024] the third regulation value is the glass color grade;

[0025] In response to the difference between the ambient temperature and the air conditioner set temperature reaching the corrected temperature threshold, and the ambient temperature is greater than the air conditioner set temperature, deepen the initial glass color grade according to the regulation correction value to obtain a final glass color grade;

[0026] In response to the difference between the ambient temperature and the air conditioner set temperature reaching the corrected temperature threshold, and the ambient temperature is less than or equal to the air conditioner set temperature, fade the initial glass color grade according to the regulation correction value to obtain a final glass color grade.

[0027] In some embodiments of the first aspect, the value range of the corrected temperature threshold is [8~10°C].

[0028] In a second aspect, the present application provides a light transmittance regulation device for an electrochromic window,

[0029] An actuator for implementing the method for regulating the light transmittance of the electrochromic window according to any embodiment of the first aspect; the actuator is further configured to obtain the air conditioner set temperature and the ultraviolet index;

[0030] A temperature sensor for obtaining the ambient temperature;

[0031] An ultraviolet irradiance meter for obtaining the ultraviolet intensity.

[0032] In a third aspect, the present application further provides a computer-readable storage medium, on which a computer program is stored, and when the program is executed by a processor, the steps of the method for regulating the light transmittance of the electrochromic window according to any embodiment of the first aspect are implemented.

[0033] In a fourth aspect, the present application further provides a computer program product, including a computer program / instructions, characterized in that when the computer program / instructions are executed by a processor, the steps of the method for regulating the light transmittance of the electrochromic window according to any embodiment of the first aspect are implemented.

[0034] Compared with the prior art, the beneficial effects achieved by the present application:

[0035] The method for regulating the light transmittance of the electrochromic window provided by the present application starts from two core elements, evaluates the temperature rise situation after sunlight enters the cab according to the difference between the ambient temperature affected by sunlight and the air conditioner set temperature, and then sets the first regulation value to resist the temperature rise effect. The ultraviolet intensity represents the ultraviolet radiation energy, while the ultraviolet index reflects the potential harm intensity to the human skin. Through the two kinds of data, the harm of the current ultraviolet intensity to the human skin can be obtained, and then the second regulation value can be obtained. Considering the proportion of the functions of the two regulation values, a composite third regulation value is obtained. It can take into account the requirements of the driver's line of sight and the requirement of appropriately blocking sunlight. Finally, a suitable cab temperature environment is created without blocking the driver's line of sight. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] In order to more clearly illustrate the technical solutions in the present application or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present application, and for those of ordinary skill in the art, other drawings can be obtained according to these drawings without creative efforts.

[0037] Figure 1 is a flowchart of the steps of the method for regulating the light transmittance of the electrochromic window provided in this embodiment;

[0038] Figure 2 is a signal processing flowchart of the method for regulating the light transmittance of the electrochromic window provided in this embodiment;

[0039] Figure 3 is a flowchart of the method for regulating the light transmittance of the electrochromic window provided in this embodiment;

[0040] Figure 4 is a schematic block diagram of the principle of the computer device provided in this embodiment;

[0041] In the figure: 1. Actuator; 2. Ultraviolet irradiance meter; 3. Temperature sensor. Specific embodiments

[0042] The technical solution of the present invention will be described in detail below through the accompanying drawings and specific embodiments. It should be understood that the specific features in the embodiments of the present application are detailed descriptions of the technical solution of the present application, rather than limitations on the technical solution of the present application. Without conflict, the technical features in the embodiments of the present application and the embodiments can be combined with each other.

[0043] The term "and / or" in this article is merely a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in this article generally represents an "or" relationship between the associated objects before and after.

[0044] Embodiment 1:

[0045] Figure 1 is a flowchart of a method for regulating the light transmittance of an electrochromic window in Embodiment 1 of the present invention. This flowchart only shows the logical sequence of the method described in this embodiment. On the premise of not conflicting with each other, in other possible embodiments of the present invention, it can be different from Figure 1 the order shown to complete the steps shown or described.

[0046] The method for regulating the light transmittance of the electrochromic window provided in this embodiment can be applied to a terminal and can be executed by an in-vehicle MCU. Refer to Figure 1 , the method of this embodiment specifically includes the following steps:

[0047] Obtain the ambient temperature and the air conditioner set temperature, and obtain a first regulation value according to the ambient temperature and the air conditioner set temperature;

[0048] Obtain the ultraviolet intensity and the ultraviolet index, and obtain a second regulation value according to the ultraviolet intensity and the ultraviolet index;

[0049] Fuse the first regulation value and the second regulation value to obtain a third regulation value, and regulate the light transmittance of the window according to the third regulation value.

[0050] The harm of sunlight to the cab mainly lies in two points: 1. The temperature inside the cab rises under direct sunlight, resulting in an increased load on the air conditioner. 2. The ultraviolet rays in sunlight can damage the driver's skin. The existing solution is to add curtains and control the amount of sunlight entering by adjusting the shading area of the curtains. However, the curtains will block the driver's line of sight, and it is also rather cumbersome to adjust the shading area of the curtains back and forth.

[0051] The method for regulating the light transmittance of the electrochromic window provided in this embodiment starts from two core elements, evaluates the temperature rise after sunlight enters the cab based on the difference between the ambient temperature affected by sunlight and the air conditioner set temperature, and then sets the first regulation value to resist the temperature rise effect. Obtain the ultraviolet intensity and ultraviolet index. The ultraviolet intensity represents the ultraviolet radiation energy received per unit area per unit time, while the ultraviolet index reflects the potential harm intensity of ultraviolet radiation to the human skin. Through these two kinds of data, the harm of the current ultraviolet intensity to the human skin can be obtained, and then the second regulation value can be obtained.

[0052] The cab layouts and air conditioner powers of different vehicles are different. Therefore, in this embodiment, the first regulation value and the second regulation value are fused, and the proportion of the roles of the two regulation values is considered to obtain the composite third regulation value. Using the third regulation value to regulate the light transmittance of the electrochromic window can take into account the driver's line of sight requirements and the requirement of appropriately blocking sunlight. Even when the electrochromic window is at a relatively high color depth, the driver can still observe the details outside through the glass, and the color of the electrochromic window is controlled by the third regulation value, which can reduce the skin damage caused by ultraviolet rays and the heating effect of sunlight on the interior.

[0053] Embodiment 2:

[0054] This embodiment provides a method for regulating the light transmittance of an electrochromic window. This embodiment is optimized on the basis of Embodiment 1 to improve the technical effect and refine the technical solution. For the content not described in detail in this embodiment, please refer to Embodiment 1.

[0055] As one of the embodiments, the first regulation value is obtained by calculating according to the following formula:

[0056] ,

[0057] In the formula, is the first regulation value, is the ambient temperature, is the air conditioner set temperature.

[0058] In this embodiment, the first regulation value is used to characterize the deviation degree between the ambient temperature and the air conditioner set temperature. Without the air conditioner, the temperature in the cab will converge with the ambient temperature after being irradiated by sunlight. Therefore, in this embodiment, the difference between the ambient temperature and the air conditioner set temperature is used as a reference value to measure the heating effect of sunlight on the interior.

[0059] As one of the embodiments, the second regulation value is obtained by the following formula:

[0060] ,

[0061] In the formula, is the second regulation value, is the ultraviolet intensity, is the adjustment coefficient, is the ultraviolet index. As one of the embodiments, the ultraviolet intensity can adopt the average ultraviolet intensity per unit time.

[0062] Since the value range of the first regulation value is [0, 1], the adjustment coefficient can take 10, so that the value range of the second regulation value is [0, 1], which is convenient for weighting when calculating the third regulation value later. Referring to Table 1, the ultraviolet index can adopt the values in the ultraviolet radiation intensity level division table stipulated by the National Meteorological Administration.

[0063] Table 1 Ultraviolet Radiation Intensity Level Division Table Stipulated by the National Meteorological Administration

[0064]

[0065] As one of the embodiments, the third regulation value is obtained by the following formula:

[0066] ,

[0067] In the formula, is the third regulation value, is the first regulation value, is the second regulation value, and are the weight coefficients of the first regulation value and the second regulation value respectively.

[0068] It is not difficult for those skilled in the art to see that the weight coefficients are regulated according to the cab layout, air conditioner performance and driver's feeling.

[0069] As one of the embodiments, this application finds that the human body's perception of cold and heat does not change linearly with temperature. Therefore, when the ambient temperature is low, it is necessary to additionally reduce the color depth on the basis of the original regulation value to increase the light transmittance of the electrochromic window, and when the ambient temperature is high, it is necessary to additionally increase the color depth on the basis of the original regulation value to reduce the light transmittance of the electrochromic window.

[0070] As one of the embodiments, obtaining a third regulation value by fusing a first regulation value and a second regulation value includes:

[0071] Obtaining a corrected temperature threshold and a regulation correction value;

[0072] Obtaining an initial third regulation value according to the first regulation value and the second regulation value;

[0073] In response to the difference between the ambient temperature and the air-conditioning set temperature reaching the corrected temperature threshold, regulating the correction value to correct the initial third regulation value to obtain a final third regulation value.

[0074] Regulating the light transmittance of the regulating window with the final third regulation value.

[0075] Taking the third regulation value as an example of the glass color grade in this embodiment, the light transmittance of the electrochromic window is adjusted by fixed grades. The grades are I, II, III, IV, and V in sequence. The larger the grade, the darker the color and the lower the light transmittance. And a specific correction method is provided:

[0076] In response to the difference between the ambient temperature and the air-conditioning set temperature reaching the corrected temperature threshold, and the ambient temperature is greater than the air-conditioning set temperature, deepening the initial glass color grade according to the regulation correction value to obtain the final glass color grade;

[0077] In response to the difference between the ambient temperature and the air-conditioning set temperature reaching the corrected temperature threshold, and the ambient temperature is less than or equal to the air-conditioning set temperature, fading the initial glass color grade according to the regulation correction value to obtain the final glass color grade.

[0078] As one of the embodiments, the value range of the corrected temperature threshold is [8~10°C].

[0079] Referring to Table 2, Table 2 is the light transmittance output result of a certain electrochromic window without considering the corrected temperature threshold.

[0080] Table 2, Glass color grade table under different working conditions

[0081]

[0082] Among them, is the ambient temperature. In the situation corresponding to Table 2, the air-conditioning set temperature is 25°C, the corrected temperature threshold is 10°C, and the glass color grades under different working conditions after correction can be referred to Table 3 "Glass color grade table under different working conditions after correction":

[0083] Table 3, Glass color grade table under different working conditions after correction

[0084]

[0085] Referring to Table 3, it is not difficult to know that when the ambient temperature is less than or equal to 15°C, the difference between the air conditioning set temperature and the ambient temperature reaches the correction temperature threshold, and all the corresponding glass color gears in the table are adjusted down by one gear to increase the amount of sunlight incident on the cab, and those that have reached gear I are maintained at gear I. When the ambient temperature is greater than 35°C, the difference between the air conditioning set temperature and the ambient temperature reaches the correction temperature threshold, and all the corresponding glass color gears in the table are adjusted up by one gear, and those that have reached gear V are maintained at gear V to reduce the amount of sunlight incident on the cab.

[0086] In summary, the method for regulating the transmittance of electrochromic windows provided in this embodiment uses electrochromic windows to regulate the amount of sunlight blocked, thereby ensuring the line of sight in the cab, and nonlinearly regulates the transmittance of the electrochromic windows according to the ultraviolet light environment and ambient temperature, thereby reducing the air-conditioning load while maintaining a comfortable temperature environment.

[0087] refer to Figure 3 This embodiment further refines the method for controlling the light transmittance of the electrochromic window. Figure 3 In the present invention, the control method of the light transmittance of the electrochromic window can be divided into manual adjustment "M" and automatic adjustment "A", "N" means no, "Y" means yes, and the steps mentioned above are followed when performing automatic adjustment. Figure 3 It can be seen that the UV index can be released by the local meteorological department and the UV intensity can be obtained by the UV radiometer 3.

[0088] Embodiment three:

[0089] This embodiment provides a light transmittance control device for an electrochromic window. Figure 4 ,include,

[0090] Actuator 1, used to execute the light transmittance control method of an electrochromic window according to any one of claims 1 to 7; Actuator 1 is also used to obtain the air conditioner set temperature and the ultraviolet index;

[0091] Temperature sensor 2, used to obtain ambient temperature;

[0092] The ultraviolet radiation meter 3 is used to obtain the ultraviolet intensity.

[0093] As one example, refer to Figure 2 The ultraviolet radiation meter 3 may be composed of a full-wavelength ultraviolet probe and an ultraviolet radiation meter processing module embedded in the cab instrument, and the collected information may be displayed in real time in the cab instrument. The actuator 1 may use a device controller, and the third control value output by the device controller is processed by a signal amplifier to adjust the transmittance of the electrochromic window in the cab.

[0094] The transmittance control method for the electrochromic window provided in Example 1 or 2 can be applied to the transmittance control device for the electrochromic window provided in this embodiment, and has functional modules and beneficial effects corresponding to the execution method. The transmittance control device for the electrochromic window provided in this embodiment has the same technical effects as those in Example 1 or 2, which will not be repeated here.

[0095] Embodiment 4:

[0096] This embodiment provides a computer-readable storage medium having a computer program stored thereon. When the program is executed by a processor, the steps of the method for controlling the light transmittance of the electrochromic window provided in Embodiment 1 or Embodiment 2 are implemented.

[0097] The computer-readable storage medium provided in this embodiment has the same technical effects as those of Embodiment 1 or 2, which will not be described in detail here.

[0098] Embodiment five:

[0099] This embodiment provides a computer program product, on which a computer program is stored, and when the program is executed by a processor, the steps of the method for controlling the light transmittance of an electrochromic window provided in Embodiment 1 or Embodiment 2 are implemented. The computer program product provided in this embodiment can be transmitted, distributed, and downloaded in the form of a signal via the Internet.

[0100] The computer program product provided in this embodiment has the same technical effects as those of Embodiment 1 or 2, and will not be described in detail here.

[0101] Those skilled in the art will appreciate that the embodiments of the present application may be provided as methods, systems, or computer program products. Therefore, the present application may adopt the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware. Moreover, the present application may adopt the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program codes.

[0102] The present application is described with reference to the flowcharts and / or block diagrams of the methods, devices (systems), and computer program products according to the embodiments of the present application. It should be understood that each process and / or box in the flowchart and / or block diagram, as well as the combination of the processes and / or boxes in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to generate a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1A device that provides the functions specified in a block or multiple blocks.

[0103] These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the computer-readable memory produce an article of manufacture comprising an instruction device, which implements the process Figure 1 A process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.

[0104] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operating steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing instructions for implementing the process. Figure 1 A process or multiple processes and / or boxes Figure 1 A step that specifies a function in one or more boxes.

[0105] In addition, the terms "first", "second", etc. are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0106] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0107] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A method for controlling the light transmittance of an electrochromic window, characterized in that: include, Acquire an ambient temperature and an air-conditioning set temperature, and acquire a first control value according to the ambient temperature and the air-conditioning set temperature; Acquire ultraviolet intensity and ultraviolet index, and acquire a second control value according to the ultraviolet intensity and the ultraviolet index; The first control value and the second control value are combined to obtain a third control value, and the light transmittance of the window is controlled according to the third control value.

2. The method for controlling light transmittance of an electrochromic window according to claim 1, characterized in that: The first control value is obtained by calculating the following formula: ， In the formula, is the first control value, is the ambient temperature, Set the temperature for the air conditioner.

3. The method for controlling light transmittance of an electrochromic window according to claim 1, characterized in that: The second control value is obtained by calculating the following formula: ， In the formula, is the second control value, is the UV intensity, is the adjustment coefficient, The UV index.

4. The method for controlling light transmittance of an electrochromic window according to claim 1, characterized in that: The third control value is obtained by calculating the following formula: ， In the formula, is the third control value, is the first control value, is the second control value, and are the weight coefficients of the first control value and the second control value respectively.

5. The method for controlling light transmittance of an electrochromic window according to any one of claims 1 to 3, characterized in that: The fusing the first control value and the second control value to obtain a third control value includes: Obtaining a correction temperature threshold and a control correction value; Obtaining an initial third regulation value according to the first regulation value and the second regulation value; In response to the difference between the ambient temperature and the air-conditioning set temperature reaching the modified temperature threshold, the control correction value corrects the initial third control value to obtain a final third control value.

6. The method for controlling light transmittance of an electrochromic window according to any one of claim 5, characterized in that: The third control value is the glass color level; In response to the difference between the ambient temperature and the air conditioner set temperature reaching the correction temperature threshold, and the ambient temperature is greater than the air conditioner set temperature, deepening the initial glass color level according to the control correction value to obtain a final glass color level; In response to the difference between the ambient temperature and the air conditioning set temperature reaching the correction temperature threshold, and the ambient temperature is less than or equal to the air conditioning set temperature, the initial glass color level is diluted according to the control correction value to obtain a final glass color level.

7. The method for controlling light transmittance of an electrochromic window according to any one of claim 5, characterized in that: The value range of the modified temperature threshold is [8~10℃].

8. A light transmittance control device for an electrochromic window, characterized in that: include, An actuator (1) for executing the method for controlling the light transmittance of an electrochromic window according to any one of claims 1 to 7; the actuator (1) is also used to obtain an air conditioner set temperature and an ultraviolet index; A temperature sensor (2) for obtaining the ambient temperature; The UV radiation meter (3) is used to obtain the UV intensity.

9. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the program is executed by a processor, the steps of the method for regulating the light transmittance of an electrochromic window as described in any one of claims 1 to 7 are implemented.

10. A computer program product comprising a computer program / instructions, characterized in that When the computer program / instructions are executed by a processor, the steps of the method for regulating the light transmittance of an electrochromic window as described in any one of claims 1 to 7 are implemented.

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