CN111664483B - Image acquisition method of range hood and range hood - Google Patents
Image acquisition method of range hood and range hoodDownload PDFInfo
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- CN111664483B CN111664483BCN201910171378.0ACN201910171378ACN111664483BCN 111664483 BCN111664483 BCN 111664483BCN 201910171378 ACN201910171378 ACN 201910171378ACN 111664483 BCN111664483 BCN 111664483B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
- F24C15/00—Details
- F24C15/20—Removing cooking fumes
- F24C15/2021—Arrangement or mounting of control or safety systems
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
- H05B45/10—Controlling the intensity of the light
- H05B45/12—Controlling the intensity of the light using optical feedback
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
- H05B45/20—Controlling the colour of the light
- H05B45/22—Controlling the colour of the light using optical feedback
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/40—Control techniques providing energy savings, e.g. smart controller or presence detection
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Abstract
Translated fromChinese
Description
Translated fromChinese技术领域technical field
本发明涉及智能设备检测领域，具体涉及一种油烟机的图像采集方法和油烟机。The invention relates to the field of intelligent device detection, in particular to an image acquisition method for a range hood and a range hood.
背景技术Background technique
目前，烟机行业内检测油烟浓度的方式主要是采用气体、粉尘以及光学等传感器，存在检测实时性差，油烟对传感器污染以及维护保养难度大等问题。最新技术采用图像识别方式检测油烟，能很好的解决以上问题。At present, the methods of detecting the concentration of oil fume in the hood industry mainly use sensors such as gas, dust and optics, which have problems such as poor real-time detection, pollution of oil fume to sensors, and difficulty in maintenance. The latest technology uses image recognition to detect oil fume, which can solve the above problems very well.
图像传感器主要缺点在于对油烟的脏污容易造成检测结果不准确或是失效，而造成脏污的主要原因是冷热变化引起的摄像头镜片起雾，另一个则是长期油烟上升逃逸到镜片，在镜片上附着形成油膜，从而降低了镜片的通光率。而且图像传感器对图像的采集效果与环境光的亮度和色温有较大的关系，且不同用户厨房环境的光线色温有较大的差异，因此很难满足油烟机的检测通用性。The main disadvantage of the image sensor is that the contamination of oil fume can easily lead to inaccurate detection results or failure. The main cause of contamination is the fogging of the camera lens caused by the change of cold and heat, and the other is that the long-term oil fume rises and escapes to the lens. An oil film is formed on the lens, which reduces the light transmission rate of the lens. Moreover, the image acquisition effect of the image sensor has a great relationship with the brightness and color temperature of the ambient light, and the color temperature of the light in the kitchen environment of different users is quite different, so it is difficult to meet the detection versatility of the range hood.
发明内容SUMMARY OF THE INVENTION
本发明提供一种油烟机的图像采集方法和油烟机，保证油烟机运行状态下的环境光稳定性，并保证图像识别准确率和一致性。The invention provides an image acquisition method of a range hood and a range hood, which can ensure the stability of ambient light in the operating state of the range hood, and ensure the accuracy and consistency of image recognition.
为了实现上述发明目的，本发明采取的技术方案如下：In order to realize the above-mentioned purpose of the invention, the technical scheme adopted by the present invention is as follows:
第一方面，本发明提供一种油烟机的图像采集方法，包括：In a first aspect, the present invention provides an image acquisition method for a range hood, including:
在烹饪环境中进行环境光检测并获取相应的色彩通道数据；Perform ambient light detection in a cooking environment and obtain corresponding color channel data;
根据所述色彩通道数据确定烹饪过程中亮度变化情况和色温变化情况；Determine brightness changes and color temperature changes during the cooking process according to the color channel data;
根据亮度变化情况和色温变化情况调节烹饪过程中的亮度值和色温值，使得所述亮度值和色温值满足设定的标准亮度要求和标准色温要求。The brightness value and the color temperature value during the cooking process are adjusted according to the brightness change and the color temperature change, so that the brightness value and the color temperature value meet the set standard brightness requirements and standard color temperature requirements.
优选地，所述的方法，还包括：Preferably, the method further comprises:
获取烹饪区域内的图像信息；Get image information in the cooking area;
根据所述图像信息确定烹饪过程中的烟雾分布情况；Determine the smoke distribution during the cooking process according to the image information;
根据所述烟雾分布情况确定烹饪过程中风机转速。The rotational speed of the fan during the cooking process is determined according to the distribution of the smoke.
优选地，通过色彩传感器和/或摄像头获取色彩通道数据；Preferably, color channel data is acquired through a color sensor and/or a camera;
在烹饪环境中进行环境光检测并获取相应的色彩通道数据之前还包括：Before performing ambient light detection in the cooking environment and obtaining the corresponding color channel data also includes:
对色彩传感器进行检测，以确定初始亮度和初始色温是否满足设定的标准初始亮度要求和标准初始色温要求。The color sensor is detected to determine whether the initial brightness and initial color temperature meet the set standard initial brightness requirements and standard initial color temperature requirements.
优选地，对色彩传感器进行检测，以确定初始亮度和初始色温是否满足设定的标准初始亮度要求和标准初始色温要求包括：Preferably, the detection of the color sensor to determine whether the initial brightness and the initial color temperature meet the set standard initial brightness requirements and standard initial color temperature requirements include:
确定照明灯关闭状态的色温值K1和亮度值Lm1；Determine the color temperature value K1 and the brightness value Lm1 of the light off state;
确定照明灯开启状态的色温值K2和亮度值Lm2；Determine the color temperature value K2 and the brightness value Lm2 of the lighting lamp when it is turned on;
确定照明灯开启状态与照明灯关闭状态的色温差值ΔK＝K2-K1；确定照明灯开启状态与照明灯关闭状态的亮度差值ΔLm＝Lm2-Lm1；Determine the color temperature difference value ΔK=K2-K1 between the light-on state and the light-off state; determine the brightness difference ΔLm=Lm2-Lm1 between the light-on state and the light-off state;
根据所述色温差值ΔK和亮度差值ΔLm是否在预设的色温初始变化范围和亮度初始变化范围，确定初始亮度和初始色温是否满足设定的标准初始亮度要求和标准初始色温要求。According to whether the color temperature difference value ΔK and the luminance difference value ΔLm are within the preset color temperature initial variation range and luminance initial variation range, it is determined whether the initial luminance and initial color temperature meet the set standard initial luminance requirements and standard initial color temperature requirements.
优选地，根据亮度变化情况和色温变化情况调节烹饪过程中的亮度值和色温值包括：Preferably, adjusting the brightness value and the color temperature value during the cooking process according to the brightness change and the color temperature change includes:
当亮度变化情况不满足标准亮度要求时，逐级调节冷光光源和暖光光源的电源输出，直到亮度变化情况满足标准亮度要求；When the brightness change does not meet the standard brightness requirements, adjust the power output of the cold light source and the warm light source step by step until the brightness changes meet the standard brightness requirements;
当亮度变化情况满足标准亮度要求，色温变化情况不满足标准色温要求时，逐级调节冷光光源和暖光光源的开启时间和/或开启数量，直到色温变化情况满足标准色温。When the brightness change meets the standard brightness requirements, and the color temperature change does not meet the standard color temperature requirements, adjust the turn-on time and/or turn-on quantity of the cold light source and the warm light source step by step until the color temperature change meets the standard color temperature.
优选地，所述冷光光源包括冷白LED矩阵和冷白驱动MOS管；所述暖光光源包括：暖白LED矩阵和暖白驱动MOS管；Preferably, the cold light source includes a cool white LED matrix and a cool white driving MOS tube; the warm light source includes: a warm white LED matrix and a warm white driving MOS tube;
调节冷光光源和暖光光源电源输出包括：Adjusting the power output of cold light sources and warm light sources includes:
调节第一脉冲宽度信号PWM1的输出占空比，调节冷白LED矩阵和暖白LED矩阵的输出电流Io，实现亮度调节；Adjust the output duty ratio of the first pulse width signal PWM1, adjust the output current Io of the cool white LED matrix and the warm white LED matrix, and realize brightness adjustment;
调节冷光光源和暖光光源的开启时间和/或开启数量包括：Adjusting the turn-on time and/or number of cool and warm light sources includes:
采用功率开关MOS管分别控制冷白LED矩阵的通断和暖白LED矩阵的通断，第二脉冲宽度信号PWM2连接暖白驱动MOS管栅极，控制暖白LED矩阵的导通时间和/或导通数量，第二脉冲宽度信号PWM2经反相器后得到反相的第二脉冲宽度信号PWM2连接冷白驱动MOS管栅极，控制冷白LED矩阵的导通时间和/或导通数量。The power switch MOS tube is used to control the on-off of the cool-white LED matrix and the on-off of the warm-white LED matrix respectively, and the second pulse width signal PWM2 is connected to the gate of the warm-white driving MOS tube to control the on-time of the warm-white LED matrix and/or The number of conduction, the second pulse width signal PWM2 is obtained through the inverter to obtain an inverted second pulse width signal PWM2, which is connected to the gate of the cool white driving MOS transistor to control the conduction time and/or the number of conduction of the cool white LED matrix.
优选地，调节冷光光源和暖光光源的开启时间和/或开启数量包括：Preferably, adjusting the turn-on time and/or turn-on quantity of the cold light source and the warm light source includes:
当色温变化情况低于标准色温要求时，增加第二脉冲宽度信号PWM2的输出占空比，增加暖白LED矩阵的导通时间和/或导通数量；When the change of color temperature is lower than the standard color temperature requirement, increase the output duty ratio of the second pulse width signal PWM2, and increase the conduction time and/or conduction quantity of the warm white LED matrix;
当色温变化情况高于标准色温要求时，减小第二脉冲宽度信号PWM2的输出占空比，减少暖白LED矩阵的导通时间和/或导通数量。When the color temperature variation is higher than the standard color temperature requirement, the output duty cycle of the second pulse width signal PWM2 is reduced, and the conduction time and/or the conduction quantity of the warm white LED matrix is reduced.
第二方面，本发明还提供一种油烟机，包括图像识别模块、烟机控制单元以及照明灯控制驱动组件，In a second aspect, the present invention also provides a range hood, including an image recognition module, a hood control unit, and a lighting lamp control drive assembly,
图像识别模块，用于在烹饪环境中进行环境光检测并获取相应的色彩通道数据；The image recognition module is used to detect ambient light in the cooking environment and obtain the corresponding color channel data;
烟机控制单元，用于根据所述色彩通道数据确定烹饪过程中亮度变化情况和色温变化情况；a hood control unit, configured to determine brightness changes and color temperature changes during the cooking process according to the color channel data;
烟机控制单元，还用于根据亮度变化情况和色温变化情况通过照明灯控制驱动组件调节烹饪过程中的亮度值和色温值，使得所述亮度值和色温值满足设定的标准亮度要求和标准色温要求。The hood control unit is also used to adjust the brightness value and the color temperature value during the cooking process according to the brightness change situation and the color temperature change situation through the lighting lamp control driving component, so that the brightness value and the color temperature value meet the set standard brightness requirements and standards color temperature requirements.
优选地，所述的油烟机，还包括：风机机构；Preferably, the range hood further comprises: a fan mechanism;
图像识别模块，还用于获取烹饪区域内的图像信息；并根据所述图像信息确定烹饪过程中的烟雾分布情况，The image recognition module is also used for acquiring image information in the cooking area; and determining the smoke distribution during the cooking process according to the image information,
烟机控制单元，还用于根据所述烟雾分布情况通过风机机构控制烹饪过程中风机转速。The hood control unit is further configured to control the rotational speed of the blower during the cooking process through the blower mechanism according to the smoke distribution.
优选地，所述照明灯控制驱动组件包括：亮度调节电路、冷光光源和暖光光源，所述冷光光源包括冷白LED矩阵和冷白驱动MOS管；所述暖光光源包括：暖白LED矩阵和暖白驱动MOS管；Preferably, the lighting control and driving assembly includes: a brightness adjustment circuit, a cold light source and a warm light source, the cold light source includes a cool white LED matrix and a cool white driving MOS tube; the warm light source includes: a warm white LED matrix And warm white drive MOS tube;
所述烟机控制单元调节第一脉冲宽度信号PWM1的输出占空比，通过亮度调节电路调节冷白LED矩阵和暖白LED矩阵的输出电流Io，实现亮度调节；The hood control unit adjusts the output duty ratio of the first pulse width signal PWM1, and adjusts the output current Io of the cool white LED matrix and the warm white LED matrix through the brightness adjustment circuit to realize brightness adjustment;
所述烟机控制单元采用功率开关驱动MOS管分别控制冷白LED矩阵的通断和暖白LED矩阵的通断，第二脉冲宽度信号PWM2连接暖白驱动MOS管栅极，控制暖白LED矩阵的导通时间和/或导通数量，第二脉冲宽度信号PWM2经反相器后得到反相的第二脉冲宽度信号PWM2连接冷白驱动MOS管栅极，控制冷白LED矩阵的导通时间和/或导通数量。The hood control unit uses a power switch to drive the MOS tube to control the on-off of the cool white LED matrix and the on-off of the warm white LED matrix respectively. The second pulse width signal PWM2 is connected to the gate of the warm white drive MOS tube to control the warm white LED matrix. The turn-on time and/or turn-on quantity of the second pulse width signal PWM2 is obtained through the inverter to obtain the inverted second pulse width signal PWM2, which is connected to the gate of the cool-white drive MOS tube to control the turn-on time of the cool-white LED matrix. and/or conduction count.
本发明具有如下有益效果：The present invention has the following beneficial effects:
1、本发明通过对灶台环境光的色彩通道数据的亮度变化情况和色温变化情况进行分析；判断是否满足预设的标准；当不满足预设的标准时，调节对应的亮度值和/或色温值，直到亮度值和色温值均满足预设的标准，保证烟机运行状态下的环境光稳定性；1. The present invention analyzes the brightness change and color temperature change of the color channel data of the ambient light of the cooktop; judges whether the preset standard is met; when the preset standard is not met, adjusts the corresponding brightness value and/or color temperature value until the brightness value and color temperature value both meet the preset standards to ensure the stability of ambient light under the running state of the hood;
2、本发明在保证环境光稳定性的情况下，获取的图像信息与实验室环境下获得的各个参数一致，也与图像采集装置的推荐使用状态一致，保证了图像识别准确率和一致性；2. Under the condition of ensuring ambient light stability, the obtained image information is consistent with each parameter obtained in the laboratory environment, and is also consistent with the recommended use state of the image acquisition device, ensuring the accuracy and consistency of image recognition;
3、本发明先进行色彩传感器自检，判断色彩传感器是否可能存在脏污或是故障，为后续识别和调整提供前提和保障。3. The present invention firstly performs a self-check of the color sensor to determine whether the color sensor may be dirty or faulty, so as to provide prerequisites and guarantees for subsequent identification and adjustment.
4、本发明通过调节脉冲宽度信号PWM的占空比来调节亮度和色温，既能调亮度又能调色温且互不干扰，采用独立的PWM1信号和PWM2信号分别控制电源的输出调节和色温调节电路控制，实现亮度调节和色温调节互不干扰，可以配置出更多的光环境，满足更多的照明需求；4. The present invention adjusts the brightness and color temperature by adjusting the duty ratio of the pulse width signal PWM, which can adjust both the brightness and the color temperature without interfering with each other. The independent PWM1 signal and PWM2 signal are used to control the output adjustment and color temperature of the power supply respectively. Adjust the circuit control to achieve brightness adjustment and color temperature adjustment without interfering with each other, and can configure more light environments to meet more lighting needs;
5、本发明防护风道出风口设计位于摄像头传感器的外圈位置，风机运行时内部风道形成风压，出风口出风形成交叉风幕区，目的在于隔绝油烟上升路径，避免摄像头防护玻璃脏污以及起雾问题；5. The air outlet of the protective air duct of the present invention is designed to be located at the outer ring position of the camera sensor. When the fan is running, the internal air duct forms wind pressure, and the air outlet from the air outlet forms a cross air curtain area. The purpose is to isolate the rising path of oil fume and prevent the camera protective glass from being dirty fouling and fogging problems;
6、本发明调节亮度值和色温值等操作是油烟机自动完成的不需要人为干预，调节具有实时性和精确性。6. The operation of adjusting the brightness value and the color temperature value of the present invention is automatically completed by the range hood without human intervention, and the adjustment is real-time and accurate.
附图说明Description of drawings
图1为本发明实施例的油烟机的油烟机的图像采集方法的流程图；1 is a flowchart of an image acquisition method for a range hood of a range hood according to an embodiment of the present invention;
图2为本发明实施例的油烟机的烟雾检测的流程图；FIG. 2 is a flowchart of smoke detection of a range hood according to an embodiment of the present invention;
图3为本发明实施例的色彩传感器进行检测的流程图；3 is a flow chart of detection performed by a color sensor according to an embodiment of the present invention;
图4为本发明实施例的调节烹饪过程中的亮度值和色温值的流程图；4 is a flow chart of adjusting the brightness value and the color temperature value in the cooking process according to an embodiment of the present invention;
图5为本发明实施例的油烟机的结构示意图；5 is a schematic structural diagram of a range hood according to an embodiment of the present invention;
图6为本发明实施例的照明灯控制驱动组件的结构示意图。FIG. 6 is a schematic structural diagram of a lighting lamp control and driving assembly according to an embodiment of the present invention.
具体实施方式Detailed ways
为使本发明的发明目的、技术方案和有益效果更加清楚明了，下面结合附图对本发明的实施例进行说明，需要说明的是，在不冲突的情况下，本申请中的实施例和实施例中的特征可以相互任意组合。In order to make the purpose, technical solutions and beneficial effects of the present invention clearer, the embodiments of the present invention will be described below with reference to the accompanying drawings. The features in can be arbitrarily combined with each other.
如图1所示，本发明实施例提供一种油烟机的图像采集方法，包括：As shown in FIG. 1 , an embodiment of the present invention provides an image acquisition method for a range hood, including:
S101、在烹饪环境中进行环境光检测并获取相应的色彩通道数据；S101, performing ambient light detection in a cooking environment and acquiring corresponding color channel data;
S102根据所述色彩通道数据确定烹饪过程中亮度变化情况和色温变化情况；S102 determines the change of brightness and the change of color temperature during the cooking process according to the color channel data;
S103、根据亮度变化情况和色温变化情况调节烹饪过程中的亮度值和色温值，使得所述亮度值和色温值满足设定的标准亮度要求和标准色温要求。S103. Adjust the brightness value and the color temperature value during the cooking process according to the brightness change situation and the color temperature change situation, so that the brightness value and the color temperature value meet the set standard brightness requirements and standard color temperature requirements.
如图2所示，本发明实施例中，所述的方法还包括：As shown in FIG. 2, in the embodiment of the present invention, the method further includes:
S201、获取烹饪区域内的图像信息；S201, acquiring image information in the cooking area;
S202、根据所述图像信息确定烹饪过程中的烟雾分布情况；S202, determining the smoke distribution during the cooking process according to the image information;
S203、根据所述烟雾分布情况确定烹饪过程中风机转速。S203. Determine the rotational speed of the fan during the cooking process according to the smoke distribution.
本发明实施例，在油烟机下方安装有朝向灶台方向的图像识别模块，其中图像识别模块包括用于拍摄的摄像头，还包括用于采集色彩通道数据的色彩传感器，其中色彩传感器可以由摄像头代替，即图像识别模块包括摄像头或者摄像头和色彩传感器；通过色彩传感器和/或摄像头获取色彩通道数据，通过摄像头对油烟机下方的烹饪台面油烟浓度进行实时检测，并得到当前油烟浓度的量化值，数据发送给油烟机主控单元，烟机将根据油烟浓度和RGB采集数据的变化进行风机转速调节和照明灯亮度及色温调节等执行内容。In this embodiment of the present invention, an image recognition module is installed under the range hood toward the cooktop, wherein the image recognition module includes a camera for shooting, and a color sensor for collecting color channel data, where the color sensor can be replaced by a camera , that is, the image recognition module includes a camera or a camera and a color sensor; the color channel data is obtained through the color sensor and/or the camera, and the camera is used to detect the concentration of oil fume on the cooking table under the range hood in real time, and obtain the quantitative value of the current oil fume concentration, data Send it to the main control unit of the range hood, and the hood will adjust the fan speed and adjust the brightness and color temperature of the lighting according to the changes in the concentration of the range hood and RGB collected data.
当图像识别模块包括色彩传感器时，色彩传感器可以设置于摄像头左边位置，该色彩传感器的作用在于实时检测用户灶台环境光的RGB通道数据，并将数据发送给图像识别模块，图像识别模块运算后得到当前环境光的亮度和色温值，油烟机通过对比判断当前环境光的亮度和色温与系统设定的标准亮度和色温，决定是否对环境光进行照明补偿。When the image recognition module includes a color sensor, the color sensor can be set at the left position of the camera. The function of the color sensor is to detect the RGB channel data of the ambient light of the user's cooktop in real time, and send the data to the image recognition module. After the image recognition module calculates The brightness and color temperature of the current ambient light are obtained, and the range hood judges the brightness and color temperature of the current ambient light by comparison with the standard brightness and color temperature set by the system, and decides whether to perform lighting compensation for the ambient light.
本发明实施例确定烹饪过程中的烟雾分布情况时，当油烟机启动自动程序时，图像识别模块采集灶台范围内的图像数据进行运算分析，将油烟浓度值量化为0-100，通过此方法检测烹饪实时油烟，控制烟机转速变化达到吸净油烟的目的。In the embodiment of the present invention, when the smoke distribution during the cooking process is determined, when the range hood starts the automatic program, the image recognition module collects the image data within the range of the cooktop for operation and analysis, and quantifies the smoke concentration value as 0-100. Through this method Detect real-time cooking fume, and control the speed change of the hood to achieve the purpose of absorbing oil fume.
本发明实施例中，步骤S101中通过色彩传感器和/或摄像头获取色彩通道数据，步骤S101在烹饪环境中进行环境光检测并获取相应的色彩通道数据之前还包括：In this embodiment of the present invention, in step S101, color channel data is acquired through a color sensor and/or a camera, and step S101 further includes: before performing ambient light detection in a cooking environment and acquiring corresponding color channel data:
对色彩传感器进行检测，以确定初始亮度和初始色温是否满足设定的标准初始亮度要求和标准初始色温要求。The color sensor is detected to determine whether the initial brightness and initial color temperature meet the set standard initial brightness requirements and standard initial color temperature requirements.
如图3所示，本发明实施例中，对色彩传感器进行检测，以确定初始亮度和初始色温是否满足设定的标准初始亮度要求和标准初始色温要求包括：As shown in FIG. 3 , in the embodiment of the present invention, the detection of the color sensor to determine whether the initial brightness and the initial color temperature meet the set standard initial brightness requirements and standard initial color temperature requirements include:
S301、确定照明灯关闭状态的色温值K1和亮度值Lm1；确定照明灯开启状态的色温值K2和亮度值Lm2；S301. Determine the color temperature value K1 and the brightness value Lm1 of the lighting lamp in the off state; determine the color temperature value K2 and the brightness value Lm2 of the lighting lamp in the on state;
S302、确定照明灯开启状态与照明灯关闭状态的色温差值ΔK＝K2-K1；确定照明灯开启状态与照明灯关闭状态的亮度差值ΔLm＝Lm2-Lm1；S302, determine the color temperature difference value ΔK=K2-K1 between the light-on state and the light-off state; determine the luminance difference ΔLm=Lm2-Lm1 between the light-on state and the light-off state;
S303、根据所述色温差值ΔK和亮度差值ΔLm是否在预设的色温初始变化范围和亮度初始变化范围，确定初始亮度和初始色温是否满足设定的标准初始亮度要求和标准初始色温要求。S303. According to whether the color temperature difference value ΔK and the luminance difference value ΔLm are within the preset color temperature initial variation range and luminance initial variation range, determine whether the initial luminance and initial color temperature meet the set standard initial luminance requirements and standard initial color temperature requirements.
当初始亮度和初始色温均满足设定的标准初始亮度要求和标准初始色温要求时，执行获取烹饪过程中的灶台环境光的色彩通道数据的步骤；When both the initial brightness and the initial color temperature meet the set standard initial brightness requirements and standard initial color temperature requirements, the step of acquiring the color channel data of the ambient light of the cooktop during the cooking process is performed;
当初始亮度或初始色温不满足设定的标准初始亮度要求和标准初始色温要求时，提示用户进行色彩传感器保养清洁。When the initial brightness or initial color temperature does not meet the set standard initial brightness requirements and standard initial color temperature requirements, the user is prompted to maintain and clean the color sensor.
在摄像头指标中，非常重要的一项指标就是色彩的再现性。色彩的再现在不同色温和照度的光源下会有较大的变化，因此本发明可以实现调节色温和亮度。Among camera indicators, a very important indicator is color reproducibility. The reproduction of color will change greatly under light sources with different color temperature and illuminance, so the present invention can realize the adjustment of color temperature and brightness.
光源的色温是以光源发光时所显现的颜色与一个绝对黑体被高温燃烧时所显现的颜色相一致时的燃烧温度来定义的，它的单位是绝对温度Kelvin(K)。K值越大，光所显现的颜色就愈趋向于黄红色，即愈趋向于760nm；K值越小，光所显现的颜色就愈趋向于白蓝色,即愈趋向于390nm。The color temperature of the light source is defined by the burning temperature when the color displayed by the light source is consistent with the color displayed when an absolute black body is burned at high temperature, and its unit is the absolute temperature Kelvin (K). The larger the K value is, the more the color displayed by the light tends to be yellow-red, that is, the more it tends to 760nm; the smaller the K value is, the more the color displayed by the light tends to be white and blue, that is, the more it tends to 390nm.
RGB色彩传感器的工作原理就是通过光到模拟电压的转化，由色彩滤波器后面的光电二极管阵列与整合的电流到电压转换电路组成。光源照在每个光电二极管上的光转换成光电流，其幅度取决于亮度及入射光的波长，根据色温与RGB的对照表关系，RGB色彩传感器内部运算得到色温和亮度参数。本发明对光源的色温和亮度检测也是基于传感器模组检测输出值来说明的，油烟机控制单元主要是对传感器进行驱动设置控制以信号收集处理，继而控制照明灯进行色温补偿。The working principle of the RGB color sensor is through the conversion of light to analog voltage, which consists of a photodiode array behind the color filter and an integrated current-to-voltage conversion circuit. The light illuminated by the light source on each photodiode is converted into a photocurrent, and its amplitude depends on the brightness and the wavelength of the incident light. According to the relationship between the color temperature and RGB, the color temperature and brightness parameters are obtained by the internal operation of the RGB color sensor. The detection of the color temperature and brightness of the light source in the present invention is also described based on the detection output value of the sensor module. The range hood control unit mainly controls the drive setting of the sensor for signal collection and processing, and then controls the lighting lamp to perform color temperature compensation.
本发明实施例将环境光源定义为冷白和暖白2个不同的色温方向，不同的色温值还伴随着亮度的差异，经过试验测试表明人眼对4000K环境光下的照明灯较为舒适，且图像识别算法的色温校正值也以4000K为基准，亮度800流明。In the embodiment of the present invention, the ambient light source is defined as two different color temperature directions: cool white and warm white. Different color temperature values are also accompanied by differences in brightness. Tests have shown that the human eye is more comfortable with lighting lamps under 4000K ambient light, and The color temperature correction value of the image recognition algorithm is also based on 4000K, and the brightness is 800 lumens.
色彩传感器(RGB传感器)作为图像识别检测中的光源检测的主要器件，其正常工作与否直接决定了照明灯自动控制的功能运行。油烟机上电后RGB传感器进入自检状态，此时在照明灯关闭的情况下检测当前光源的色温K1和亮度Lm1，然后油烟机控制照明灯以色温K1+1000，亮度Lm+200参数运行，目的在于确保RGB传感器在不同环境光源下的色温变化检测。此时RGB传感器记录当前光源的色温K2和亮度Lm2，通过△K＝K2-K1，△Lm＝Lm2-Lm1，可以得到传感器的检测变化值，理想状态下：△K＝1000，△Lm＝200，但是由于厨房面积和环境介质对光线的影响，色温变化△K要求≥200，△Lm≥50，如果检测值不满足要求(可以检测多次)，则系统判断RGB传感器可能存在脏污或是故障，烟机将报警提醒用户进行传感器保养清洁。The color sensor (RGB sensor) is the main component of the light source detection in the image recognition detection, and its normal operation directly determines the function of the automatic control of the lighting lamp. After the range hood is powered on, the RGB sensor enters the self-checking state. At this time, the color temperature K1 and brightness Lm1 of the current light source are detected when the lighting is turned off, and then the range hood controls the lighting to operate with the parameters of color temperature K1+1000 and brightness Lm+200. The purpose is to ensure the color temperature change detection of the RGB sensor under different ambient light sources. At this time, the RGB sensor records the color temperature K2 and brightness Lm2 of the current light source. Through △K=K2-K1, △Lm=Lm2-Lm1, the detected change value of the sensor can be obtained. Ideally: △K=1000, △Lm=200 , but due to the influence of the kitchen area and the environmental medium on the light, the color temperature change △K requires ≥200, △Lm≥50, if the detection value does not meet the requirements (it can be detected multiple times), the system judges that the RGB sensor may be dirty or If there is a fault, the hood will alarm to remind the user to perform sensor maintenance and cleaning.
如图4所示，本发明实施例中，步骤S103中根据亮度变化情况和色温变化情况调节烹饪过程中的亮度值和色温值包括：As shown in FIG. 4 , in the embodiment of the present invention, adjusting the brightness value and the color temperature value during the cooking process according to the brightness change and the color temperature change in step S103 includes:
S401、当亮度变化情况不满足标准亮度要求时，逐级调节冷光光源和暖光光源的电源输出，直到亮度变化情况满足标准亮度要求；S401. When the brightness change does not meet the standard brightness requirement, adjust the power output of the cold light source and the warm light source step by step until the brightness change meets the standard brightness requirement;
S402、当亮度变化情况满足标准亮度要求，色温变化情况不满足标准色温要求时，逐级调节冷光光源和暖光光源的开启时间和/或开启数量，直到色温变化情况满足标准色温。S402. When the brightness change meets the standard brightness requirement and the color temperature change does not meet the standard color temperature requirement, adjust the turn-on time and/or turn-on quantity of the cold light source and the warm light source step by step until the color temperature change meets the standard color temperature.
本发明实施例，所述冷光光源包括冷白LED矩阵和冷白驱动MOS管；所述暖光光源包括：暖白LED矩阵和暖白驱动MOS管；In the embodiment of the present invention, the cold light source includes a cool white LED matrix and a cool white driving MOS tube; the warm light source includes: a warm white LED matrix and a warm white driving MOS tube;
调节冷光光源和暖光光源电源输出包括：Adjusting the power output of cold light sources and warm light sources includes:
调节第一脉冲宽度信号PWM1的输出占空比，调节冷白LED矩阵和暖白LED矩阵的输出电流Io，实现亮度调节；Adjust the output duty ratio of the first pulse width signal PWM1, adjust the output current Io of the cool white LED matrix and the warm white LED matrix, and realize brightness adjustment;
调节冷光光源和暖光光源的开启时间和/或开启数量包括：Adjusting the turn-on time and/or number of cool and warm light sources includes:
采用功率开关驱动MOS管分别控制冷白LED矩阵的通断和暖白LED矩阵的通断，第二脉冲宽度信号PWM2连接暖白驱动MOS管栅极，控制暖白LED矩阵的导通时间和/或导通数量，第二脉冲宽度信号PWM2经反相器后得到反相的第二脉冲宽度信号PWM2连接冷白驱动MOS管栅极，控制冷白LED矩阵的导通时间和/或导通数量。The power switch is used to drive the MOS tube to control the on-off of the cool white LED matrix and the on-off of the warm white LED matrix respectively. The second pulse width signal PWM2 is connected to the gate of the warm white drive MOS tube to control the on-time and/or on-off of the warm white LED matrix. Or the number of conductions, the second pulse width signal PWM2 is obtained through the inverter to obtain an inverted second pulse width signal PWM2, which is connected to the gate of the cool white drive MOS tube to control the conduction time and/or the number of conduction of the cool white LED matrix. .
本发明实施例中，调节冷光光源和暖光光源的开启时间和/或开启数量包括：In the embodiment of the present invention, adjusting the turn-on time and/or turn-on quantity of the cold light source and the warm light source includes:
当色温变化情况低于标准色温要求时，增加第二脉冲宽度信号PWM2的输出占空比，增加暖白LED矩阵的导通时间和/或导通数量；When the change of color temperature is lower than the standard color temperature requirement, increase the output duty ratio of the second pulse width signal PWM2, and increase the conduction time and/or conduction quantity of the warm white LED matrix;
当色温变化情况高于标准色温要求时，减小第二脉冲宽度信号PWM2的输出占空比，减少暖白LED矩阵的导通时间和/或导通数量。When the color temperature variation is higher than the standard color temperature requirement, the output duty cycle of the second pulse width signal PWM2 is reduced, and the conduction time and/or the conduction quantity of the warm white LED matrix is reduced.
本发明实施例根据所述图像信息确定烹饪过程中的烟雾分布情况至少包括以下三种方式：In the embodiment of the present invention, the determination of the smoke distribution during the cooking process according to the image information includes at least the following three ways:
根据烹饪过程中所拍摄图像的高频分量和低频分量确定油烟浓度信息；Determine oil fume concentration information according to high frequency components and low frequency components of images captured during cooking;
根据烹饪过程中所拍摄图像的清晰度信息确定油烟浓度信息；或者，Determine oil fume concentration information according to the sharpness information of the images captured during the cooking process; or,
根据烹饪过程中所拍摄图像的灰度值确定油烟浓度信息。The oil fume concentration information is determined according to the gray value of the image captured during the cooking process.
如图5所示，本发明提供一种油烟机，包括图像识别模块100、烟机控制单元200以及照明灯控制驱动组件400，As shown in FIG. 5 , the present invention provides a range hood, including an image recognition module 100, a
图像识别模块100，用于获取烹饪过程中的灶台环境光的色彩通道数据；The image recognition module 100 is used for acquiring the color channel data of the ambient light of the cooktop during the cooking process;
烟机控制单元200，用于根据所述色彩通道数据确定烹饪过程中亮度变化情况和色温变化情况；The
烟机控制单元200，还用于根据亮度变化情况和色温变化情况通过照明灯控制驱动组件400调节烹饪过程中的亮度值和色温值，使得所述亮度值和色温值满足设定的标准亮度要求和标准色温要求。The
所述的油烟机，还包括：风机机构300；The range hood further includes: a fan mechanism 300;
图像识别模块100，还用于获取烹饪区域内的图像信息；并根据所述图像信息确定烹饪过程中的烟雾分布情况，The image recognition module 100 is further configured to acquire image information in the cooking area; and determine the smoke distribution during the cooking process according to the image information,
烟机控制单元200，还用于根据所述烟雾分布情况通过风机机构300控制烹饪过程中风机转速。The
如图6所示，所述照明灯控制驱动组件300包括：亮度调节电路、冷光光源和暖光光源，所述冷光光源包括冷白LED矩阵和冷白驱动MOS管；所述暖光光源包括：暖白LED矩阵和暖白驱动MOS管；As shown in FIG. 6 , the lighting control and driving assembly 300 includes: a brightness adjustment circuit, a cold light source and a warm light source, the cold light source includes a cool white LED matrix and a cool white driving MOS tube; the warm light source includes: Warm white LED matrix and warm white drive MOS tube;
所述烟机控制单元调节第一脉冲宽度信号PWM1的输出占空比，通过亮度调节电路调节冷白LED矩阵和暖白LED矩阵的输出电流Io，实现亮度调节；The hood control unit adjusts the output duty ratio of the first pulse width signal PWM1, and adjusts the output current Io of the cool white LED matrix and the warm white LED matrix through the brightness adjustment circuit to realize brightness adjustment;
所述烟机控制单元采用功率开关MOS管分别控制冷白LED矩阵的通断和暖白LED矩阵的通断，第二脉冲宽度信号PWM2连接暖白驱动MOS管栅极，控制暖白LED矩阵的导通时间和/或导通数量，第二脉冲宽度信号PWM2经反相器后得到反相的第二脉冲宽度信号PWM2连接冷白驱动MOS管栅极，控制冷白LED矩阵的导通时间和/或导通数量。The hood control unit uses a power switch MOS tube to control the on-off of the cool white LED matrix and the on-off of the warm white LED matrix respectively, and the second pulse width signal PWM2 is connected to the gate of the warm white drive MOS tube to control the on-off of the warm white LED matrix The conduction time and/or the number of conduction, the second pulse width signal PWM2 is obtained through the inverter to obtain an inverted second pulse width signal PWM2, which is connected to the gate of the cool white drive MOS tube, and controls the on time and the cool white LED matrix. / or the number of conductions.
本发明采用了PWM调光驱动方式，色温调节采用PWM开关调光的方式调节冷白LED阵列和暖白LED阵列的导通时间比例，实现色温调节，如图6所示。PWM1信号控制电源的调光端子，通过调节PWM1的占空比来调节LED的输出电流Io进而实现LED灯具亮度调节。为了实现色温调节，将导通压降相近的一组冷白LED矩阵和一组暖白LED矩阵并联接于电源输出端，采用功率开关MOS管分别控制冷白LED矩阵的通断和暖白LED矩阵的通断。PWM2信号连接暖白MOS管栅极，实现对暖白LED矩阵导通时间的控制，PWM2经反相器后得到反相的信号PWM3连接冷白MOS管栅极，控制冷白LED矩阵的导通时间。PWM2为高电平时，PWM3为低电平，故暖白LED矩阵导通，冷白LED矩阵断开，反之亦然。调节PWM2的占空比来调节单位时间内暖白LED矩阵和冷白LED矩阵的导通时间比例，利用人眼存在暂留时间，实现了色温的变化效果。The present invention adopts the PWM dimming drive mode, and the color temperature adjustment adopts the PWM switch dimming mode to adjust the conduction time ratio of the cool white LED array and the warm white LED array to realize the color temperature adjustment, as shown in FIG. 6 . The PWM1 signal controls the dimming terminal of the power supply, and adjusts the output current Io of the LED by adjusting the duty cycle of PWM1, thereby realizing the brightness adjustment of the LED lamp. In order to adjust the color temperature, a set of cool white LED matrix and a set of warm white LED matrix with similar conduction voltage drop are connected to the power output in parallel, and the power switch MOS tube is used to control the on-off of the cool white LED matrix and the warm white LED respectively. matrix on and off. The PWM2 signal is connected to the gate of the warm white MOS tube to control the conduction time of the warm white LED matrix. PWM2 gets an inverted signal after passing through the inverter. PWM3 is connected to the gate of the cool white MOS tube to control the conduction of the cool white LED matrix. time. When PWM2 is high, PWM3 is low, so the warm white LED matrix is turned on, and the cool white LED matrix is turned off, and vice versa. The duty cycle of PWM2 is adjusted to adjust the ratio of the on-time of the warm-white LED matrix and the cool-white LED matrix per unit time, and the effect of color temperature change is realized by using the temporary time of the human eye.
通过此方式调节色温主要由以下优点：Adjusting the color temperature in this way has the following advantages:
一、既能调光又能调色温且互不干扰，采用独立的PWM1信号和PWM2信号分别控制电源的输出调节和色温调节电路控制，实现亮度调节和色温调节互不干扰，可以配置出更多的光环境，满足更多的照明需求。1. It can adjust the light and color temperature without interfering with each other. The independent PWM1 signal and PWM2 signal are used to control the output adjustment of the power supply and the control of the color temperature adjustment circuit respectively, so as to realize the brightness adjustment and the color temperature adjustment without interfering with each other. More light environments to meet more lighting needs.
二、两路高低色温白光LED矩阵只有一路呈导通状态，实现了输出功率恒定，系统更加可靠。2. Only one of the two high and low color temperature white LED arrays is on, which makes the output power constant and the system more reliable.
三、采用一个调光电源及几个用于实现色温调节的器件，硬件成本低、控制简单。3. Using a dimming power supply and several devices for realizing color temperature adjustment, the hardware cost is low and the control is simple.
优选地，所述风机机构300的图像识别模块防护风道设置于所述图像识别模块100的摄像头组件的外圈位置，烟机控制单元200通过图像识别模块防护风道形成出风风幕，调节出风口出风的风压和风速。Preferably, the image recognition module protective air duct of the fan mechanism 300 is arranged at the outer ring position of the camera assembly of the image recognition module 100, and the
本发明实施例的图像识别模块100安装于油烟机的导烟板上，防护风道的出风口设计位于摄像头的外圈位置，其出风口与面板角度呈30°-45°角，风机采用离心风机鼓风结构，风道与控制板和传感器结构密封独立，出风口位置收紧设计，风机运行时内部风道形成风压，出风口出风形成交叉风幕区，目的在于隔绝油烟上升路径，避免摄像头防护玻璃脏污以及起雾问题。The image recognition module 100 of the embodiment of the present invention is installed on the smoke guide plate of the range hood, the air outlet of the protective air duct is designed to be located at the outer ring position of the camera, and the angle of the air outlet and the panel is 30°-45°, and the fan adopts centrifugal The blower structure of the fan, the air duct is sealed independently from the control panel and the sensor structure, and the position of the air outlet is tightened. When the fan is running, the internal air duct forms wind pressure, and the air outlet from the air outlet forms a cross air curtain area, which aims to isolate the rising path of oil fume. Avoid dirty camera glass and fogging problems.
另外可在图像识别模块的外部设计装饰氛围灯，通过氛围灯的颜色、闪烁、常亮灯来提示用户当前模块的工作状态，突出产品的高科技智能元素。In addition, decorative atmosphere lights can be designed on the outside of the image recognition module, and the color, flashing, and constant light of the atmosphere lights can remind users of the current working status of the module, highlighting the high-tech intelligent elements of the product.
实施例一Example 1
本实施例说明确定油烟机的工作过程：This embodiment describes the working process of determining the range hood:
当油烟机控制单元进入到图像识别功能程序，烟机打开照明灯，此时照明灯以色温4000K，亮度200运行，RGB传感器检测当前环境光源亮度Lm1，如果Lm1≥800，则判定当前环境光源亮度满足要求，由于亮度过大可以通过减小摄像头的光圈和感光度来调节，且图像质量不受影响，因此允许环境光亮度大于800；若环境光亮度偏暗，则摄像头在最大光圈条件下只能通过提高感光度进行图像提亮，提高ISO会造成噪点增加，图像质量下降，可能会影响图像识别结果。When the hood control unit enters the image recognition function program, the hood turns on the lighting, and the lighting runs at a color temperature of 4000K and a brightness of 200. The RGB sensor detects the current ambient light source brightness Lm1, if Lm1≥800, then determine the current ambient light source brightness To meet the requirements, since the brightness is too large, it can be adjusted by reducing the aperture and sensitivity of the camera, and the image quality is not affected, so the ambient light brightness is allowed to be greater than 800; The image can be brightened by increasing the sensitivity. Increasing the ISO will increase the noise and reduce the image quality, which may affect the image recognition results.
如果Lm1＜800，则判定当前环境光源亮度不满足要求，油烟机控制单元控制PWM1即照明灯电源输出增大，加大输出电流，在不改变色温的条件下提高照明灯亮度，直到环境光源亮度Lm1满足≥800。If Lm1<800, it is determined that the brightness of the current ambient light source does not meet the requirements, and the hood control unit controls PWM1, that is, the output of the lighting power supply increases, increases the output current, and increases the brightness of the lighting without changing the color temperature until the brightness of the ambient light source Lm1 satisfies ≥800.
当环境亮度满足要求后，统检测当前环境光的色温值K1，如果此时K1满足4000K±200，则系统判断当前色温值满足要求，RGB传感器继续运行。When the ambient brightness meets the requirements, the system detects the color temperature value K1 of the current ambient light. If K1 meets 4000K±200 at this time, the system determines that the current color temperature value meets the requirements, and the RGB sensor continues to run.
当K1不满足色温要求时，则判断当前色温值时K1＞4000K还是K1＜4000K：When K1 does not meet the color temperature requirements, judge whether the current color temperature value is K1>4000K or K1<4000K:
如果此时K1>4200K，表明当前环境光源色温较高，暖色调较多，则烟机控制单元控制PWM2输出占空比减小，即减小暖白光LED矩阵的导通时间，同时增大冷白光LED矩阵的导通时间，占空比的减小速率是每个周期减小5个数值(系统设定占空比为100个等分比例)。If K1>4200K at this time, it indicates that the color temperature of the current ambient light source is high and there are many warm tones, and the hood control unit controls the output duty cycle of PWM2 to decrease, that is, the on-time of the warm white LED matrix is reduced, and the cold light is increased at the same time. The turn-on time of the white LED matrix, the rate of reduction of the duty cycle is 5 values per cycle (the system sets the duty cycle to be 100 equal parts).
如果此时K1＜3800K，表明当前环境光源色温较低，冷色调较多，则烟机控制单元控制PWM2输出占空比增大，即增大暖白光LED矩阵的导通时间，同时减小冷白光LED矩阵的导通时间，占空比的增大速率是每个周期增大5个数值(系统设定占空比为100个等分比例)。If K1 < 3800K at this time, it indicates that the color temperature of the current ambient light source is low and there are many cold tones, and the hood control unit controls the output duty ratio of PWM2 to increase, that is, to increase the on-time of the warm white LED matrix, while reducing the cold The turn-on time of the white LED matrix and the increase rate of the duty cycle are 5 values per cycle (the system sets the duty cycle to be 100 equal parts).
通过占空比的增大或减小，要求占空比不能超过100％，也就是冷白光或是暖白光完全关闭，此情况表明通过改变冷白和暖白光的导通时间已经无法满足色温调整要求，此时需要增大照明灯亮度，目的在于通过亮度提高来加大色温的变化影响度，同样的PWM1占空比输出以5％的速率加大，直到环境光源色温K1满足＝4000K±200。By increasing or decreasing the duty cycle, it is required that the duty cycle cannot exceed 100%, that is, the cool white light or the warm white light is completely turned off. This situation indicates that the color temperature adjustment cannot be satisfied by changing the on-time of the cool white light and the warm white light. At this time, it is necessary to increase the brightness of the lighting lamp. The purpose is to increase the influence of the color temperature change by increasing the brightness. The same PWM1 duty cycle output is increased at a rate of 5% until the ambient light source color temperature K1 meets = 4000K±200 .
当用户在不启动油烟机图像识别功能，而是单独启动照明灯功能，则此时RGB传感器的作用就是保证照明灯输出亮度和色温的一致性，调整校正流程与上面一致，区别在于照明灯功能要求保证照明亮度，如果亮度Lm＝800后，则不再提高亮度；此时色温值默认以当前色温为准；用户也可以通过自定义照明灯的亮度和色温，照明灯实时显示反馈。When the user does not activate the image recognition function of the range hood, but activates the lamp function alone, the function of the RGB sensor is to ensure the consistency of the output brightness and color temperature of the lamp, and the adjustment and correction process is the same as the above, the difference lies in the lamp function. It is required to ensure the lighting brightness. If the brightness Lm=800, the brightness will not be increased; at this time, the color temperature value defaults to the current color temperature; the user can also customize the brightness and color temperature of the lighting, and the lighting will display feedback in real time.
虽然本发明所揭示的实施方式如上，但其内容只是为了便于理解本发明的技术方案而采用的实施方式，并非用于限定本发明。任何本发明所属技术领域内的技术人员，在不脱离本发明所揭示的核心技术方案的前提下，可以在实施的形式和细节上做任何修改与变化，但本发明所限定的保护范围，仍须以所附的权利要求书限定的范围为准。Although the embodiments disclosed in the present invention are as above, the contents thereof are only the embodiments adopted to facilitate the understanding of the technical solutions of the present invention, and are not intended to limit the present invention. Any person skilled in the art to which the present invention belongs, without departing from the core technical solution disclosed by the present invention, can make any modifications and changes in the form and details of the implementation, but the protection scope limited by the present invention is still The scope as defined by the appended claims shall prevail.
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