WO2020119101A1 - 一种基于nb-iot的教室光环境控制*** - Google Patents
一种基于nb-iot的教室光环境控制*** Download PDFInfo
- Publication number
- WO2020119101A1 WO2020119101A1 PCT/CN2019/095205 CN2019095205W WO2020119101A1 WO 2020119101 A1 WO2020119101 A1 WO 2020119101A1 CN 2019095205 W CN2019095205 W CN 2019095205W WO 2020119101 A1 WO2020119101 A1 WO 2020119101A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- led
- brightness
- light environment
- classroom
- iot
- Prior art date
Links
Images
Classifications
-
- 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
-
- 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
Definitions
- the invention relates to the field of Internet communication technology, in particular to a classroom light environment control system based on NB-IOT.
- the classroom lighting environment is crucial to students' visual health and learning efficiency. Uncomfortable lighting will cause frequent over-regulation of the human eye, causing muscle tension and visual fatigue. At the same time, it will also cause a decline in learning efficiency and affect the student's mental state.
- the purpose of the invention is to solve the shortcomings of the prior art, and to provide a classroom light environment control system based on NB-IOT, which has the ability to cover a large number of connections, lower power consumption and lower modules Cost, the ability to collect accurate light environment information in the classroom in real time, calculate the most suitable LED brightness value through judgment and detection of multiple parameters, and send each LED brightness value to the cloud platform through NB-IOT communication, and then send To the monitoring end of the upper computer, the upper computer stores the display brightness information and sends the LED brightness control signal to the LED control end to change the brightness of each LED lamp.
- a NB-IOT-based classroom light environment control system is characterized by comprising: a device end composed of a light environment acquisition end and an LED control end, a cloud platform and a host computer Monitoring end
- the light environment collecting end is composed of a control chip, an NB-IOT module, and a camera module.
- the light environment collecting end uses multi-exposure fusion to obtain accurate light environment information in the classroom, and calculates the optimal brightness value of each indoor LED through image processing. Send to the monitoring terminal of the host computer;
- the LED control terminal is composed of a control chip, an NB-IOT module, an LED lamp and an LED constant current drive module, and is used to receive a control signal and then control the brightness of the LED lamp;
- the cloud platform serves as a communication relay between the monitoring end of the host computer, the LED control end, and the light environment collection end, and the cloud platform and the device end are connected and communicated through the base station;
- the monitoring terminal of the host computer includes a server for storing data and a computer interface terminal.
- the server and the cloud platform exchange information in real time.
- the computer interface terminal accesses the server in real time to obtain data and distribute data.
- the server remains online Data exchange with the lower end.
- the device end is composed of a light environment collecting end and a plurality of LED control ends.
- the light environment collecting end is installed directly behind the classroom for shooting and recording the overall information of the classroom.
- Each LED control end is installed In the classroom ceiling, the brightness of an LED lamp is independently controlled, and the communication with the monitoring end of the host computer is realized through the NB-IOT module.
- the light environment collecting end obtains a wide-angle image by shooting and recording scene images of the entire room, and then transforms the distortion-free planar image for subsequent processing through an image de-distortion algorithm within STM32.
- the light environment collecting end records the indoor high dynamic range brightness information through multiple exposures of the camera, captures multiple images with different exposures and then restores a reflection through the fusion algorithm and the camera brightness response curve
- multiple images with different exposures are obtained by changing the exposure time.
- the brightness of the desktop is determined according to the obtained high dynamic image, and then the real-time illumination of the desktop is determined according to the reflection characteristics of the desktop.
- the LED brightness of the corresponding lamp is continuously lowered until the next acquisition
- the obtained illuminance value is within the suitable range or until the LED brightness is 0, the adjustment is stopped, and when the desktop illuminance is lower than the standard value, the LED brightness of the corresponding lamp is increased.
- the acquired plane image is used to determine the pixel area where the blackboard is located in the image according to the chromaticity characteristics of the blackboard, and whether the classroom enters the classroom mode is judged based on whether the blackboard contains prominent highlight areas. Decrease the brightness of the LED in the front area of the classroom.
- the light environment collecting end calculates the brightness required by each LED in the room through the scene brightness information recorded by multi-exposure shooting, and sends it to the cloud platform through the NB-IOT module, and the cloud platform forwards the signal To the monitoring end of the host computer.
- the upper computer monitoring terminal is used to receive the collected signal sent by the light environment collecting terminal, display the brightness information of each LED lamp of each classroom on the display in real time and back up the storage, and simultaneously store each The LED brightness control signal is sent to the corresponding LED control terminal.
- the host computer setting system is in a manual mode or an automatic mode.
- the LED control terminal controls the LED constant current driver through the PWM wave according to the received LED brightness value, and then controls the LED brightness.
- soft adjustment is adopted when adjusting the LED brightness Way, that is, when the LED brightness is to be increased, the target brightness value is achieved by slowly increasing the PWM wave duty cycle for a period of time; when the LED brightness is to be reduced, by slowly reducing the PWM wave duty cycle for a period of time Reach the target brightness value.
- the NB-IOT-based classroom light environment control system provided by the present invention has the following advantages compared with the prior art:
- the structure of the device terminal is more convenient, the installation is convenient and the space is small, and the network can be directly accessed without the need for a convergence gateway;
- the adopted NB-IOT communication method has the advantages of wide coverage, strong connection, low power consumption and low cost;
- the system can be truly intelligent, record the overall indoor light environment information, and then perform multi-parameter fusion analysis and calculation, and then adjust the response LED brightness to make the classroom achieve the most suitable light environment state, and to a certain extent. Save energy.
- Figure 1 is a schematic diagram of the structure of the present invention
- Figure 2 is the overall structure of the classroom space structure and lower-end equipment
- Figure 3 is the camera brightness curve, that is, the corresponding relationship between the exposure and the pixel gray value
- Figure 4 is the flow chart of classroom light environment adjustment
- Figure 5 is a schematic diagram of the location of the blackboard, blackboard lamp and projector
- Figure 6 is a structural diagram of the monitoring terminal of the host computer
- FIG. 7 is a specific structural diagram and power supply diagram of the LED control terminal.
- a classroom light environment control system based on NB-IOT according to the present invention, as shown in FIG. 1, wherein the device end includes two types of devices: a classroom light environment collecting end and an LED control end, one light environment collecting end is composed of: The high-performance STM32 chip, NB-IOT module and camera module are composed, while the LED control terminal is composed of a relatively low-end STM32 chip, NB-IOT module and LED constant current drive controller.
- the device side communicates with the operator's base station through the NB-IOT module, and the base station connects to the cloud platform.
- the cloud platform can communicate with the device side in real time, and the device side realizes the function of connecting to the Internet.
- the cloud platform acts as a relay.
- the cloud platform can temporarily cache the data, and then send the data to the device after the device starts NB-IOT communication.
- the monitoring terminal of the upper computer is the uppermost part of the entire system, including the computer interface and the server.
- the server interacts with the cloud platform in real time. After logging in, the computer interface can access the server to obtain data and send data. When the computer interface is After going offline, the server can still stay online, interact with the lower-end data and process the data.
- the device is installed at a specific location in the classroom, and interacts with the host computer through NB-IOT communication.
- the device end includes a classroom light environment collection end and multiple LED control terminals, where the light environment collection end is installed at the ceiling position at the rear of the classroom.
- Figure 2 shows a typical installation position where the camera can collect The image information of the desktop and blackboard, and it is not easy to be blocked by the student's body when collecting desktop images.
- the LED control terminal is used to control the brightness of the LED lamps.
- a lamp is equipped with an LED control terminal device, and each lamp in the room can achieve individual brightness control.
- the light environment collecting end of the present invention obtains classroom image information through an embedded camera equipped with a fisheye lens or an ultra-wide-angle lens.
- the fisheye lens is an extreme wide-angle lens.
- the angle of view can be close to 180 degrees.
- the overall information of the classroom can be recorded in one shot.
- the captured image has serious distortion. First, the image needs to be distorted.
- the core of the classroom light environment acquisition end of the present invention is to synthesize the actual spatial brightness image with high dynamic range through multi-exposure shooting.
- the illuminance received by the camera sensor has the following correspondence with the actual scene brightness:
- E is the illuminance of the camera light sensor plane (CCD or CMOS), L is the brightness of the actual scene, ⁇ is the lens transmittance, and F m is the reciprocal of the camera relative numerical aperture.
- the light sensor plane illuminance E has the following relationship with the exposure:
- T is the exposure time and H is the exposure amount.
- the corresponding relationship between camera exposure and gray value is called the camera brightness response curve. It is fixed after the camera leaves the factory. This camera brightness curve can be restored by experimental calibration. According to the brightness curve and the exposure time used for shooting, combining the formulas (1) and (2), the mapping relationship between the image gray value and the actual scene brightness can be determined.
- the present invention uses multi-exposure fusion to record high dynamic brightness information.
- the minimum number of shots required for a multi-exposure process is determined by equation (3):
- n N scene /N camera (3)
- n is the number of shots required for one multi-exposure, that is, the number of pictures required for high dynamic fusion
- scene N is the brightness dynamic range of the classroom scene
- camera N is the dynamic range of the camera.
- L i f(B i ), i is an integer from 1 to n (4)
- L i is the brightness value recovered from a single image
- B i is the pixel gray value
- f() is the brightness-grayscale correspondence determined by equations (1) and (2)
- L is the fusion of n images
- L i is the brightness value recovered from a single image
- B i is the pixel gray value
- f() is the brightness-grayscale correspondence determined by equations (1) and (2)
- L is the fusion of n images
- the desktop area in the captured image can be determined.
- the chromaticity characteristics of the desktop can be determined by referring to data or actual measurements, and then the approximate illuminance of the desktop can be obtained by the brightness of the desktop area.
- the specific calculation process is as follows. In this calculation, the desktop is approximately equivalent to a complete diffuse reflector:
- Equation 8 expresses the relationship between the desktop brightness and illuminance. If the calculated desktop illuminance value is not within a reasonable range, then recalculate the brightness of the corresponding fixture in the area, send a dimming command to adjust the brightness of the fixture, and then continue to detect whether the desktop illuminance meets the requirements, and continue to adjust the brightness of the fixture if it does not meet the feedback.
- the flow chart of adjustment is shown in Figure 4.
- FIG. 5 shows the schematic diagram of the positions of the blackboard, blackboard lamp and projector. At the top are two blackboard lamps, which are controlled by their respective LED control devices. The blackboard is located on the front wall, and the projection whiteboard is generally located in the middle of the blackboard. In the area, the whiteboard is usually blocked by the blackboard surface. When it is used, the blackboard surface is pushed away to expose the whiteboard as a projection plane. Firstly, the location of the pixel area of the blackboard in the captured image is determined by chromaticity recognition.
- the chromaticity characteristics of the blackboard can be determined by referring to data or actual measurement, and the location of the blackboard in the image can be determined according to this chromaticity characteristic.
- the blackboard surface illuminance can be calculated, and the blackboard light is adjusted according to the blackboard surface illuminance. This adjustment process is similar to the illumination illuminance adjustment process.
- the light environment collection end sends this information to the NB base station through the NB-IOT module, and the base station sends the information to the cloud platform, which has a relay cache
- the binary data received by the device can be converted into json format data and sent to the host computer monitoring end.
- the json data is specifically sent to the user's server.
- the user opens the computer interface it can be Real-time data interaction with the server.
- the computer interface has the functions of real-time monitoring of the status of the equipment and manual control of lamps and lanterns.
- the power module converts 220V AC to 5V DC and 220V DC, 5V DC is used to power the control chip and NB-IOT module, and the LED constant current drive controller is 220V Power supply can generate a constant current source to drive LED lamps to emit light.
- the LED control terminal receives the lamp brightness control signal through the NB-IOT module, and after processing by STM32, generates a PWM wave with a corresponding pulse width to the constant current drive controller.
- the constant current drive controller controls the brightness of the lamp based on the received PWM wave. Based on the frequency limit of human eyes perceiving flicker, the dimming frequency of the lamp should be at least 100HZ.
- a soft adjustment method is adopted, that is, when the brightness of the LED is to be increased Internally gradually increase the duty cycle of the PWM wave to achieve the target brightness value; when the LED brightness is to be reduced, the target brightness value is achieved by gradually reducing the PWM wave duty cycle over a period of time.
Landscapes
- Circuit Arrangement For Electric Light Sources In General (AREA)
Abstract
Description
Claims (10)
- 一种基于NB-IOT的教室光环境控制***,其特征在于:包括由光环境采集端和LED控制端组成的设备端,云平台以及上位机监控端;所述光环境采集端由控制芯片、NB-IOT模块、摄像头模块组成,光环境采集端采用多曝光融合方式获取教室精确的光环境信息,通过图像处理计算出室内各LED的最佳亮度值并发送给上位机监控端;所述LED控制端由控制芯片、NB-IOT模块、LED灯具和LED恒流驱动模块组成,用于接收控制信号继从而对LED灯具亮度进行控制;所述云平台作为上位机监控端与LED控制端、光环境采集端之间的通信中继,云平台与设备端之间通过基站连接通信;所述上位机监控端包含存储数据的服务器和电脑界面端两部分,服务器与云平台实时交互信息,电脑界面端实时访问服务器获取数据和下发数据,当电脑界面端下线时,服务器保持在线与下位端进行数据交互。
- 根据权利要求1所述的一种基于NB-IOT的教室光环境控制***,其特征在于:所述设备端由一个光环境采集端和多个LED控制端组成,光环境采集端安装在教室正后方,用于拍摄记录教室的整体信息,每个LED控制端安装在教室天花板,独立控制一盏LED灯具的亮度,并且通过NB-IOT模块实现与上位机监控端的通信。
- 根据权利要求1所述的一种基于NB-IOT的教室光环境控制***,其特征在于:所述光环境采集端通过拍摄记录整个室内的场景图像得到广视角图像,然后经过STM32内部的图像去畸变算法转化供后续处理的无畸变平面图像。
- 根据权利要求3所述的一种基于NB-IOT的教室光环境控制***,其特征在于:所述光环境采集端通过摄像头多曝光的方式记录室内高动态范围的亮度信息,拍摄多幅不同曝光度的图像继而通过融合算法和相机亮度响应曲线恢复出一幅反映真实场景亮度的高动态图像,多幅不同曝光度图像的获取采用改变曝光时间的方法获取。
- 根据权利要求4所述的一种基于NB-IOT的教室光环境控制***,其特征在于:根据得到的高动态图像确定桌面的亮度,再根据桌面的反射特性确定桌面的实时照度,当桌面照度高于限定值时不断调低对应灯具LED亮度,直到下次采集到的照度值在适合区间内或至LED亮度为0则停止调节,当桌面照度低于标准值则调高对应灯具LED亮度。
- 根据权利要求3所述的一种基于NB-IOT的教室光环境控制***,其特征在于:通过采集到的平面图像,根据黑板的色度特征确定黑板在图像中位于的像 素区域,根据黑板是否含有突出高亮区域判断教室有无进入上课模式,若是上课模式则调低教室前部区域LED的亮度值。
- 根据权利要求3所述的一种基于NB-IOT的教室光环境控制***,其特征在于:所述的光环境采集端通过多曝光拍摄记录的场景亮度信息来计算室内每个LED所需的亮度,通过NB-IOT模块发送给云平台,云平台再将信号转发给上位机监控端。
- 根据权利要求7所述的一种基于NB-IOT的教室光环境控制***,其特征在于:所述的上位机监控端用于接收光环境采集端发送的采集信号,将每个教室的每个LED灯亮度信息实时显示在显示器上并备份存储,同时将每个LED亮度控制信号下发给对应的LED控制端。
- 根据权利要求8所述的一种基于NB-IOT的教室光环境控制***,其特征在于:所述的上位机设置***为手动模式或者自动模式。
- 根据权利要求8所述的一种基于NB-IOT的教室光环境控制***,其特征在于:LED控制端根据接收到的LED亮度值,通过PWM波的方式控制LED恒流驱动器,继而控制LED的亮度,为适应人眼的特性,在调整LED亮度时采用软调整的方式,即当要提高LED亮度时通过在一段时间内缓慢提高PWM波占空比的方式达到目标亮度值;当要降低LED亮度时通过在一段时间内缓慢减小PWM波占空比的方式达到目标亮度值。
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201811530990.4 | 2018-12-14 | ||
CN201811530990.4A CN109640442B (zh) | 2018-12-14 | 2018-12-14 | 一种基于nb-iot的教室光环境控制*** |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2020119101A1 true WO2020119101A1 (zh) | 2020-06-18 |
Family
ID=66073977
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/CN2019/095205 WO2020119101A1 (zh) | 2018-12-14 | 2019-07-09 | 一种基于nb-iot的教室光环境控制*** |
Country Status (2)
Country | Link |
---|---|
CN (1) | CN109640442B (zh) |
WO (1) | WO2020119101A1 (zh) |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN111918442A (zh) * | 2020-08-24 | 2020-11-10 | 合肥安能智控技术有限公司 | 一种用于led灯具的灯光控制***及方法 |
CN112327661A (zh) * | 2020-11-28 | 2021-02-05 | 安徽信息工程学院 | 人员密集度识别技术在能耗管理***中的运用 |
CN112738945A (zh) * | 2020-10-21 | 2021-04-30 | 浙江利尔达客思智能科技有限公司 | 一种多点照度采集联动照度调整的控制***及方法 |
CN113766708A (zh) * | 2021-04-30 | 2021-12-07 | 北京字节跳动网络技术有限公司 | 一种照明装置亮度调节方法、装置、电子设备和存储介质 |
CN114760739A (zh) * | 2022-06-15 | 2022-07-15 | 启东盛丽光电科技有限公司 | 一种基于环境信息的智能照明灯具控制***及方法 |
CN114980430A (zh) * | 2022-06-02 | 2022-08-30 | 常州嘉顿照明科技有限公司 | 一种应用于城市大型广场的高杆灯智能照明*** |
CN116600436A (zh) * | 2023-07-17 | 2023-08-15 | 永林电子股份有限公司 | 一种教室内多led灯智能控制*** |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109640442B (zh) * | 2018-12-14 | 2021-06-11 | 东南大学 | 一种基于nb-iot的教室光环境控制*** |
CN110346116B (zh) * | 2019-06-14 | 2021-06-15 | 东南大学 | 一种基于图像采集的场景照度计算方法 |
CN112333898B (zh) * | 2019-08-30 | 2023-04-25 | 北京字节跳动网络技术有限公司 | 一种灯具亮度调节方法、装置、灯具和存储介质 |
CN110879555B (zh) * | 2019-12-13 | 2020-09-11 | 旭宇光电(深圳)股份有限公司 | 教室照明智能控制*** |
CN110972362A (zh) * | 2019-12-27 | 2020-04-07 | 重庆绿色科技开发(集团)有限公司 | Nb-iot无线控制的多路恒流单灯控制*** |
CN111163570B (zh) * | 2019-12-30 | 2023-09-08 | 南京东晖光电有限公司 | 一种基于nb-iot的室内灯具组合调控***及方法 |
CN112074054A (zh) * | 2020-08-21 | 2020-12-11 | 博流智能科技(南京)有限公司 | 基于机器学习的智能灯色温控制方法及*** |
CN112954864A (zh) * | 2021-02-04 | 2021-06-11 | 无锡欣马智慧科技有限公司 | 一种智能教室调光方法及*** |
CN113038654B (zh) * | 2021-03-25 | 2024-06-14 | 北京七维视觉传媒科技有限公司 | 一种灯光控制*** |
CN114793231B (zh) * | 2022-04-11 | 2023-09-12 | 深圳冠特家居健康***有限公司 | 一种基于互联网的5g通讯光控照明*** |
CN116156696B (zh) * | 2023-04-23 | 2023-07-04 | 永林电子股份有限公司 | 一种led灯亮度的控制装置 |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN106455210A (zh) * | 2016-10-09 | 2017-02-22 | 浙江凯耀照明股份有限公司 | 室内照度智能调节装置及控制方法 |
CN206380120U (zh) * | 2016-08-31 | 2017-08-04 | 华北电力大学(保定) | 一种自适应教室照明控制*** |
CN107105563A (zh) * | 2017-07-03 | 2017-08-29 | 刘胜泉 | 一种图像识别控制室内灯的方法 |
CN107567138A (zh) * | 2017-09-13 | 2018-01-09 | 重庆邮电大学 | 基于云计算的智能灯控制装置及*** |
CN108184298A (zh) * | 2017-11-28 | 2018-06-19 | 上海亚明照明有限公司 | 基于NB-IoT的智能电源装置及灯具控制方法 |
CN109640442A (zh) * | 2018-12-14 | 2019-04-16 | 东南大学 | 一种基于nb-iot的教室光环境控制*** |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103716955A (zh) * | 2013-11-16 | 2014-04-09 | 镇江高等职业技术学校 | 一种针对大学晚自修的教室分区域智能照明*** |
CN206712926U (zh) * | 2017-05-26 | 2017-12-05 | 淮阴师范学院 | 一种多曝光图像融合*** |
CN107426894A (zh) * | 2017-06-20 | 2017-12-01 | 上海大学 | 基于智能视频识别的教室灯光自动检测控制***及其方法 |
CN108391059A (zh) * | 2018-03-23 | 2018-08-10 | 华为技术有限公司 | 一种图像处理的方法和装置 |
-
2018
- 2018-12-14 CN CN201811530990.4A patent/CN109640442B/zh active Active
-
2019
- 2019-07-09 WO PCT/CN2019/095205 patent/WO2020119101A1/zh active Application Filing
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN206380120U (zh) * | 2016-08-31 | 2017-08-04 | 华北电力大学(保定) | 一种自适应教室照明控制*** |
CN106455210A (zh) * | 2016-10-09 | 2017-02-22 | 浙江凯耀照明股份有限公司 | 室内照度智能调节装置及控制方法 |
CN107105563A (zh) * | 2017-07-03 | 2017-08-29 | 刘胜泉 | 一种图像识别控制室内灯的方法 |
CN107567138A (zh) * | 2017-09-13 | 2018-01-09 | 重庆邮电大学 | 基于云计算的智能灯控制装置及*** |
CN108184298A (zh) * | 2017-11-28 | 2018-06-19 | 上海亚明照明有限公司 | 基于NB-IoT的智能电源装置及灯具控制方法 |
CN109640442A (zh) * | 2018-12-14 | 2019-04-16 | 东南大学 | 一种基于nb-iot的教室光环境控制*** |
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN111918442A (zh) * | 2020-08-24 | 2020-11-10 | 合肥安能智控技术有限公司 | 一种用于led灯具的灯光控制***及方法 |
CN112738945A (zh) * | 2020-10-21 | 2021-04-30 | 浙江利尔达客思智能科技有限公司 | 一种多点照度采集联动照度调整的控制***及方法 |
CN112327661A (zh) * | 2020-11-28 | 2021-02-05 | 安徽信息工程学院 | 人员密集度识别技术在能耗管理***中的运用 |
CN113766708A (zh) * | 2021-04-30 | 2021-12-07 | 北京字节跳动网络技术有限公司 | 一种照明装置亮度调节方法、装置、电子设备和存储介质 |
CN113766708B (zh) * | 2021-04-30 | 2023-05-26 | 北京字节跳动网络技术有限公司 | 一种照明装置亮度调节方法、装置、电子设备和存储介质 |
CN114980430A (zh) * | 2022-06-02 | 2022-08-30 | 常州嘉顿照明科技有限公司 | 一种应用于城市大型广场的高杆灯智能照明*** |
CN114980430B (zh) * | 2022-06-02 | 2024-01-16 | 常州嘉顿照明科技有限公司 | 一种应用于城市大型广场的高杆灯智能照明*** |
CN114760739A (zh) * | 2022-06-15 | 2022-07-15 | 启东盛丽光电科技有限公司 | 一种基于环境信息的智能照明灯具控制***及方法 |
CN116600436A (zh) * | 2023-07-17 | 2023-08-15 | 永林电子股份有限公司 | 一种教室内多led灯智能控制*** |
CN116600436B (zh) * | 2023-07-17 | 2023-09-19 | 永林电子股份有限公司 | 一种教室内多led灯智能控制*** |
Also Published As
Publication number | Publication date |
---|---|
CN109640442B (zh) | 2021-06-11 |
CN109640442A (zh) | 2019-04-16 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
WO2020119101A1 (zh) | 一种基于nb-iot的教室光环境控制*** | |
WO2021098191A1 (zh) | 一种自动调节目标场景照明水平的方法及智能照明控制*** | |
US20190124246A1 (en) | Illumination Systems and Methods for Computer Imagers | |
TWI446131B (zh) | 使用攝影裝置的亮度調整系統及方法 | |
WO2021103346A1 (zh) | 投影装置亮度的自适应调节方法及调节*** | |
CN107305312A (zh) | 投影亮度和对比的自动调整***及方法 | |
CN111258158B (zh) | 投影机及亮度调整方法 | |
CN101126661B (zh) | 一种确定环境亮度的方法及装置 | |
CN204302648U (zh) | 一种通过摄像头进行投影仪亮度与色彩自动调节*** | |
CN103905759B (zh) | 图像投影设备与其控制方法 | |
CN102413280A (zh) | 摄像设备及其控制方法 | |
CN102523386B (zh) | 基于直方图均衡化的自动曝光方法 | |
CN205071165U (zh) | 一种球形摄像机 | |
CN108415493A (zh) | 一种教室环境智能调控*** | |
JPH09312198A (ja) | 照明制御システム | |
CN111163570B (zh) | 一种基于nb-iot的室内灯具组合调控***及方法 | |
CN106982505A (zh) | 灯光的智能开环调试***及其调试方法 | |
CN208656905U (zh) | 一种补光灯控制设备 | |
CN113939068A (zh) | 一种智能led灯调光控制装置及智能led灯 | |
CN106502025A (zh) | 移动终端及其前置摄像头补偿光的方法 | |
CN212034409U (zh) | 一种基于nb-iot的室内灯具组合亮度调控*** | |
CN110972376A (zh) | 一种自动控制家居灯具开关的方法及*** | |
CN205864557U (zh) | 一种具有自动补光功能的摄像机 | |
CN214256678U (zh) | 一种区域环境照明的环境眩光监测控制装置 | |
CN104469135A (zh) | 图像处理*** |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 19895521 Country of ref document: EP Kind code of ref document: A1 |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
122 | Ep: pct application non-entry in european phase |
Ref document number: 19895521 Country of ref document: EP Kind code of ref document: A1 |
|
32PN | Ep: public notification in the ep bulletin as address of the adressee cannot be established |
Free format text: NOTING OF LOSS OF RIGHTS PURSUANT TO RULE 112(1) EPC (EPO FORM 1205A DATED 22/12/2021) |
|
122 | Ep: pct application non-entry in european phase |
Ref document number: 19895521 Country of ref document: EP Kind code of ref document: A1 |