This application claims the priority benefit of Taiwan application serial no. 102110230, filed on Mar. 22, 2013. The entirety of the above-mentioned patent application is hereby incorporated by reference herein and made a part of this specification.
Field of the Invention
The invention relates to an illumination control system, and more particularly, the invention relates to an illumination control system that senses a status of a user through a sensor and accurately obtains latitude-longitudes and indoor floor heights of the user through a user positioning function, and controls illumination of light sources based on the positioning data.
Description of Related Art
In a society with aging population and declining birthrate, the importance of adopting an intelligent life and home care system has increased, and illumination has become indispensable in daily life. Thus, intelligent illumination systems have been developed. Currently, indoor illumination control systems commonly seen in the market require the following sensors:
1. Occupancy sensor: a function of the occupancy sensor is to automatically turn the lights on when a person enters a room and turn the lights off when the person leaves. The occupancy sensor comes handy for one who carries items with both hands when entering a room such as a laundromat, a kitchen, or a workplace.
2. Vacancy sensor: a function of the vacancy sensor is to turn the lights off when the person leave a room, but the person needs to manually turn the lights on when entering the room. The vacancy sensor is an ideal choice for the bedroom, as the lights would not be automatically turned on when one's partner walks in during sleep. The vacancy sensor is a preferable choice if the household includes a pet.
3. Daylight sensor: the daylight sensor dims or turns lights off when sufficient daylight is provided in a room. The daylight sensor is an ideal choice for a room with many windows, such as a family room or a sun room. This type of sensor fully uses the available daylight, reduces dependency on electrical light, and helps lower electricity costs.
4. Passive infrared sensor (PIR): the passive infrared sensor (PIR) detects temperature changes so as to determine whether someone enters a room and whether lights should be turned on. The PIR is suitable for being installed in a small and closed environment so as to detect obvious movements of a person, because the design thereof is for detecting primary movements. The strength thereof is to easily detect a person walking in or out of a space. However, a weakness thereof is that the PIR automatically turns the lights off when the PIR determines the person is not active, such that the sudden darkness causes inconvenience because the person needs to be active in order to keep the lights on.
5. Ultrasonic sensor: whether an object is moving or not in a room may be detected by reflection generated by transmitting ultrasound to the object and detecting acoustic frequency offsets between transmissions and reflections. The ultrasonic sensor is adept at detecting slight movements, such as typing, and does not need a surrounding with a bare sight vision.
6. Wireless sensor: the wireless sensor does not require new wirings and is easily installed and programmed. Each of the batteries in the wireless sensor lasts ten years, and the wireless sensor may be easily relocated for reconfigurations. Additional sensors may be installed at any time so as to expand a coverage area of the sensor in the room. These sensors transmit radio frequency (RF) signals to a dimmer and a switch, and the RF signals instruct them what to do. These sensors operate in a low frequency band (434 MHz) so as to avoid interference of other wireless devices. Wired sensors directly connected to a light control device are suitable for new buildings and battery changes are not required.
Conventional indoor illumination control technologies only control switching of lights without having dimming or toning functions. However, current LED-based illumination systems not only enhance luminous efficiency but are also capable of dimming and toning. By combining daylight sensors and room temperature sensors under computer control, the intelligence of the illumination system may be improved. However, since current illumination systems do not detect locations, identities, and emotions of indoor users, there is much room for improving the intelligence of the current illumination systems. In the modern society, buildings such as residential buildings, shopping malls or skyscrapers are becoming colossal, and people may easily get lost in a shopping mall and lose their ways. Thus, an indoor positioning system is a must have. Although many mobile communication devices have a built-in global positioning system (GPS), the GPS function cannot be used indoors. Furthermore, current indoor positioning systems require another positioning network to be structured, such as the indoor positioning system disclosed in Taiwan Patent Application No. 97112483. Moreover, the user may also require a dedicated positioning label. Therefore, the system is costly and inconvenient. In view of the above, the invention enables cost effective indoor illumination by developing an easy to use illumination system with positioning functions.
An illumination control system of the invention employs a user positioning technology as a basis of an LED illumination control and as a dimming mechanism based on a distance between the locations of the user and a lamp.
An illumination control system of the invention is to use a user positioning technology as a basis of an LED illumination control for adjusting LED brightness and further adjusting LED lightness, color temperatures and colors based on emotions of the user or room temperatures.
According to an embodiment of the invention, an illumination control system provides wireless data transmission with lamps through a mobile communication application installed in a smart phone by downloading a mobile communication application. The system adopts a Bluetooth transmission technology, in which a microcontroller of a lamp stores a location of a lamp with latitude-longitude values and height values, and a low power wireless communication module of the lamp is capable of providing wireless data transmission with the smart phone, such that a user may read the location of the lamp with the latitude-longitude values and height values by the smart phone and obtain a location of the user with latitude-longitude values and height values through related algorithms to fulfill an indoor positioning function.
According to an embodiment of the invention, an illumination control system controls illumination of a lamp by downloading a mobile communication application. By using the mobile communication application suitable in smart phones defined in the market, a user may install the mobile communication application to a smart phone and control illumination of a lamp lighting system through wireless data transmission. The related control functions include:
To make the aforesaid features and advantages of the invention more comprehensible, several embodiments accompanied with figures are described in detail below to further describe the invention in details.
The microcontroller 14 contains a function of pulse width modulation (PWM) or a function of adjusting voltages or currents supplied to LED light source driving circuits for controlling light sources of an LED light source 15, and the microcontroller 14 is stored with a location of the indoor lamp 10 with three-dimensional coordinates or latitude-longitude coordinate values and heights from the ground surface and a location of the indoor lamp 10 is obtained by reading the three-dimensional coordinates or latitude-longitude values and height values.
The low power wireless communication module 11 may wirelessly transmit data with the mobile communication application 21 installed in the mobile communication device 20, and the lower power wireless communication module 11 may adopt Bluetooth technology, and other wireless transmission technologies, such as Wi-Fi, ZigBee and ANT+, may also be adopted.
The sensor module 13 may detect environmental changes and may be configured to detect data of various changes in an environment by combining different detection modules, wherein detection contents includes all kinds of changes in the environment, such as intensity of lights, color temperatures, environmental temperatures, and levels of humidity, carbon dioxide (CO2), carbon monoxide (CO) and methane in the air.
The LED light source 15 provides illuminating rays, wherein the indoor lamp 10 may adopt an LED as a light source, regardless direct current (DC) or alternating current (AC).
The driving power module 12 with an electric power source thereof may be connected to an external power, such as general commercial power or a DC power source, and may also install an energy storage battery as a power source. A power source suitable for the LED lamp of the invention may be the AC power source or the DC power source. An AC-type LED lamp only requires an AC-DC converter, while a DC-type LED lamp may use a DC-DC converter directly.
In addition, program functions of the mobile communication application 21 may be installed in any mobile communication device 20. The mobile communication device 20 of the present embodiment adopts a smart phone, and other equipments having a wireless signal transmission function, such as tablet computers and laptops, wearable devices may be adopted as well. Data transmissions are provided wirelessly between the mobile communication device 20 and the lower power wireless communication module 11 of the lamp 10, and the preset latitude-longitude coordinates and height values stored in the microcontroller 14 is read through wireless data transmission technology. When the user reads the preset latitude-longitude coordinates and height values of the lamp 10 proximate to the lamp 10 by using the mobile communication device 20, it may be inferred that the latitude-longitude coordinates and height values are a location with the latitude-longitude coordinates and height values of the user. The mobile communication application 21 may also be installed in any wireless communication equipment having a function of connecting to an Internet. The lamp 10 is maneuvered remotely by using the function of the Internet.
The driving power module12 of the present embodiment is connected to the external power source and provides operating electricity to the microcontroller 14, the low power wireless communication module 11, the sensor module 13 and the LED light source 15 through electrical connections. The sensor module 13 may detect environmental changes and transmit data to the microcontroller 14 for the microcontroller 14 to control the LED light source 15 based on the data transmitted by the sensor module 13, so as to attain the purpose of controlling lights. The microcontroller 14 stores the location of lamp 10 with values of the latitude-longitude coordinates and heights, and transmits data through the low power wireless communication module 11 and the mobile communication device 20 installed with the mobile communication application 21, such that the user obtains the values of the latitude-longitude coordinates and heights of the lamp 10 stored in the microcontroller 14 by the mobile communication device 20 installed with the mobile communication application 21.
Step 101: obtaining an interior blueprint, which may be obtained from an interior designer or architect, or by measuring the interior on your own.
Step 102: marking locations of each of the LED light sources in the interior blueprint. A way of marking may be completed by obtaining latitude-longitude coordinates of the outermost four corners of a building through GOOGLE MAP, and obtaining the latitude-longitude coordinates of each of the LED light sources with interpolation calculation. The height coordinate of each of the LED light sources may be estimated by the altitude sensor built-in the mobile communication devices. The LED light sources include ceiling lamps, wall lamps, recessed lamps, etc. A Bluetooth communication module may be installed on lamp devices or lamp sockets, and may also be installed in LED light bulbs or light tubes. A preferable way for installing the Bluetooth communication module in a lamp device with a plurality of lamps is to install it on the lamp device. A set of lamps are dimmed or toned as a whole, and an LED lamp embedded with a Bluetooth module may directly be selected for any LED lamp in need of individual dimming or color adjusting.
Step 103: setting required luminance values for the locations of each of the LED light sources based on an illumination design of an interior designer, or individual or family needs and based on a lighting standard for public areas promulgated by a nation.
Step 104: writing in and setting the Bluetooth module in each of the LED light sources, with coordinates of latitude-longitude and heights, default luminance values, ranges of permissible luminance values, etc. A method for writing in may be processed after directly connecting to each of the Bluetooth modules through an APP of the mobile communication device, and may also be processed after connecting to each of the Bluetooth modules one by one through the central control system (communication gateway 40).
After the settings are completed, ways of controlling indoor lighting may be divided into two types. A first type is a decentralized control, which directly controls LED light sources of each of the lamps through an individual mobile communication device; and a second type is a centralized control, which a communication gateway controls LED light sources of each of the lamps through a wireless network (WIFI/BT4.0 or entirely BT4.0) or a power line communication (PLC), or Ethernet/BT4.0.
[Decentralized Control]
Scenario 1: Having the Mobile communication Device 20
Scenario 2: Wearing Accessories—a Bracelet 50 or an ID Badge
The lamp 10 in another embodiment is simply deemed as a Bluetooth master node, and all of the accessories—bracelet 50 are deemed as slave nodes. The lamp 10 scans and obtains a received signal strength indicator (RSSI) broadcasted by a proximate accessory—bracelet 50, calculates a distance therebetween with RSSI, and provides corresponding luminance by self-adjusting dimming. This is simply for energy saving and carbon reduction, and settings of coordinates of latitude-longitude and heights of any lamp 10 are not necessarily required.
[A Centralized Control]
A centralized control is suitable for a location where many people stay, such as a living room in a house, or a place like offices where people stay.
Scenario 1: Carrying a Mobile Communication Device
Please be noted that majority of men (more than 60%) put their mobile phones in their pockets, while majority of women (more than 60%) put their mobile phones in their handbags. However, as long as a user activates a mobile communication application configured for positioning the mobile communication device 20, an accurate position at present may still be obtained through a wireless communication network of the invention. Besides, the wireless communication network may transmit the position to the communication gateway 40. Then the communication gateway 40 determines a required luminance all at once, just like a central air conditioning.
Scenario 2: Wearing an Accessory—Bracelet 50 or other Accessories such as an ID Badge, a Watch, a Pair of Eyeglasses
An accelerometer may further be built in the accessory—bracelet 50 for determining whether users are active or sleeping and resting. Since the accelerometer of the accessory—bracelet 50 may detect subtle movement of hands such as typing, reading and turning pages of literal works and newspapers, sufficient illumination may be maintained. If watching TV is detected, lower luminance may be provided.
Composite Control, Combination with Decentralized Control, and Centralized Control
Embodiment 1
Controlling the lamp in a bathroom may prevent the user from searching for a switch in a dark midnight, and an application of a dimmer may prevent strong lights in midnights. A bracelet may be worn while taking a shower so as to ensure continuing illumination and send out a distress signal based on acceleration of the bracelet with a fall in the bathroom. If a passive infrared sensor (PIR) is adopted, the lamp may be on and off all the time during a shower.
Typically, every country has its own illumination standard table for regulating requirements for lighting in every location such as households, schools and offices. A system layer, first of all, sets up standard illumination for locations of each of the light sources according to the national illumination standard table, and then sets up illumination required by each user. For example, seniors require higher illumination. The system layer checks locations of each user at all times and lightens proximate light sources of the locations of the user based on their status, ages and special requirements in order to provide sufficient luminance, and dims or turns off the proximate light sources automatically for areas where no presence of the user is detected, such that an issue of not turning off lights when leaving may be effectively avoided.
A Bluetooth module of a light source may treat switches on walls as switches for resetting so as to prevent the light source from being turned on or off in case a user may not carry a bracelet, a cellular phone or an ID badge. The switches on the walls are used only for urgent situations, as the light source is usually under wireless control.
One advantage of the invention is that switches on walls are not required. Switches already installed on walls of a house may remain as long as they are always in an ON state. For new houses to be built, costs for wirings and switch box installations may be saved, so as to leave more flexibility for interior decoration. As far as illumination is concerned, when remodeling a room, a lamp only requires power line arrangement and there is no need to take a location of a switch box into account, because the light is under wireless control.
A cellular phone or a bracelet reports locations (every 10 seconds or when locations are changed) to the communication gateway. For example, continuing working in front of a computer would not change a location of a user and there is no need to update new locations to the communication gateway. The system layer receives commands from the communication gateway based on locations of each user, and reads states of each light source, ambient illumination, illumination proximate to each user to determine whether sufficient illumination is provided so as to lighten or dim a certain light source. In essence, the communication gateway commands BT4.0 SLAVE to turn on or off, or dim each of the light sources through WIFI/BT4.0.
Embodiment 2
A multifunctional bracelet is provided, including an accelerometer, a Bluetooth communication module, a microcontroller and at least two buttons. An indoor LED light Bluetooth technology is further integrated, and at least includes four modes such as an indoor positioning mode, a positioning control lamp mode, hands-on remote control mode and an emergency mode.
A Bluetooth low power module of an LED light source is operated in a slave node module 201 and broadcasts in every 0.5 seconds. A broadcasting cycle may adopt 30 ms, and contents of broadcasting is primarily a location of the LED light source, such as latitude-longitude and heights of the LED light source, which are open to a proximate mobile communication device 203 for scanning. Therein, assuming that a minimum time interval for the mobile communication device to scan broadcasting by the LED is 1000ms, RSSI samplings per second may reach up to 30 times. Thus, 15 RSSI may be obtained within 0.5 seconds. As a matter of fact, low noise of RSSI may be obtained by average, and latitude, longitude and heights of the mobile communication device may be obtained through a location algorithm.
Next, the Bluetooth low power module of the LED light source is operated in a master node module 202 or the lamp control mode, and scans a slave node surrounding the mobile communication device, such as a bracelet, in every 0.5 seconds. The bracelet is operated in the slave node mode and may be directly read by the master node of the LED light source, and determines brightness of dimming based on a strongest RSSI value of a bracelet proximate to the LED light source. High frequencies of automatic dimming is not required, as adjustments may be acceptable once for a few seconds. This is mainly to prevent people from leaving lights on, or avoid excessive low illumination or excessive high illumination. As far as dimming changes is concerned, adjustments are not performed constantly. RSSI may be divided into sections, such as four sections. If RSSI does not hop, then adjustments for brightness of lamps are not required.
It is worth to note that if the LED light source reads RSSI messages transmitted from the Bluetooth slave node of a proximate bracelet, dimming may be performed only based on RSSI. However, if no RSSI message could be read from any Bluetooth slave node, two situations may possible happen. One situation may be that user with bracelet leaves already, and the other situation may be that the bracelet is operated in the master node mode, such that RSSI messages could not be read. Therefore, based on the above, in principle, cycles for master-slave switches of the bracelet should be different from cycles for master-slave switches of the LED light sources. Further more, in order to avoid lights for being turned off when RSSI could not be read, one more cycle may be given to see if RSSI could be read before turning off the lights. The reason for doing so is to significantly reduce possibilities of turning off the lights in mistakes.
With reference to the illustration in
Next, in Step 206, the bracelet is operated in a passive lamp control (dimming) mode and broadcasts latitudes and longitudes and heights, MAC address and acceleration values of the bracelet. In Step 207, if the LED light source is in master node mode, dimming will be performed based on scanned RSSI values of the bracelet. A router 208, for example, is BT4.0/WIFI or BT4.0/PLC or BT4.0/Ethernet, and BT4.0 thereof is deemed as the master node for long. When information such as latitudes and longitudes and heights, MAC address, acceleration values of the bracelet are scanned, the information may be stored in the communication (channel) gateway or cloud 209 for records and judgments. Warnings will be issued when activities are determined as abnormal so as to send out information asking for help and rescue. Remote inquires and monitoring may also be further provided, as shown in block 210.
Embodiment 2: A Bracelet for Remotely Turning Lights on and Off
A default mode for the bracelet is set as an automatic positioning control lamp, but may be switched to a remote control mode with a purpose of making up insufficient positioning control lamp. Examples are as follows:
1. Lights are turned off or dimmed during sleep, and are turned on or lightened up when waking up in the middle of nights for toilets, drinking or taking medications. A remote control mode installed in the mobile communication device as a remote controller may directly be used for the time being to turn on or turn up lights before getting up. In this way, vision is clear, and nearsighted people could also find their eyeglasses. When they are back to beds after using the toilets, they may remotely control the lights for being dimmed or turned off. This is a relatively safer procedure for them, especially for seniors who need to wear more clothes in winters and see their surroundings clearly before getting out of beds, so that they would not fall. The remote control mode is necessary because sometimes bed lamps are not installed by bedsides.
2. When people watch TV during midnights and do not want to turn on main lights or turn up lights, they may remotely control lights by their own.
3. When illumination provided by the positioning control lamp cannot meet special needs.
A yellow button 152 is deemed as a manual remote control button and a primary function thereof is to turn off nearest LED lights in a manual mode through the mobile communication device. Please refer to
The manually-controlled lamp button, in general, refers to the multifunctional bracelet appeared in the proximity of the LED lamps and includes a mobile device with a built-in lamp controlling APP or a signal transmitted from a central lamp controlling system (communication gateway).
In terms of interactions between the mobile communication device and the LED lamps as well as other related applications, the establishment of standard regulations for communication protocols is required, such that the microcontroller in the LED lamps is regulated. As shown in Table 1 below, a smart illumination control may be achieved as long as communication protocols broadcasted from or written by the Bluetooth low power module adopted by varieties of mobile devices conforming to the standard communication protocols.
Embodiment 4: Bracelet Capable of Dimming by Remote Control
Regardless of day time or night time, if the most appropriate illumination is required, a preferable way is to use the illumination sensor to provide illuminance corresponding to the current environment and compensate to provide enough illumination. The illumination sensor may be electrically connected to a Bluetooth control panel, but a position thereof where the illumination sensor senses is based on the capability of detecting ambient illumination. The illumination sensor may be arranged in the bracelet for directly detecting whether sufficient illumination around a wearer is provided. If the illumination sensor is not required, a way to tell whether illumination is sufficient or not is to adopt daytime lighting and nighttime lighting, which primarily distinguish daytime from nighttime through sunrise or sunset time.
Functions of manually-control buttons are the same as those of a remote control. As shown in
If the LED microcontroller confirms receipt of the remote signal, the remote mode in Step 313 is operated to detect if a dimming button is pressed. If the dimming button is pressed, online connection in Step 314 is established, numbers of pressing the dimming button are accumulated to adjust brightness of the LED lamps. Brightness level is added up every time the dimming button is pressed until the level reaches its highest level. If the button is pressed again, the brightness level is gradually reduced until it reaches a lowest level to minimal brightness. If an ending time for a signal of the dimming button is over 5 seconds in Step 315, online connection is cut off in Step 316. The LED microcontroller begin to detect a cancellation signal pressed through a remotely-controlled lamp button and determines a match of the MAC address in Step 317 before recovery of operating in the positioning control lamp mode. A purpose for determining the match of the MAC address is to determine whether the cancellation signal pressed through the remotely-controlled lamp button is broadcasted by a remote communication device held by others, which would have different MAC address.
Although the invention has been disclosed with reference to the aforesaid embodiments, they are not intended to limit the invention. It will be apparent to those skilled in the art that various modifications and variations can be made to the structure of the disclosed embodiments without departing from the scope or spirit of the invention. In view of the foregoing, it is intended that the disclosure cover modifications and variations of the specification provided they fall within the scope of the following claims and their equivalents.
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102110230 A | Mar 2013 | TW | national |
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