WO2019216517A1 - 적응적 전력 절약 및 밝기 조절이 가능한 휴대용 조명장치 - Google Patents
적응적 전력 절약 및 밝기 조절이 가능한 휴대용 조명장치 Download PDFInfo
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- WO2019216517A1 WO2019216517A1 PCT/KR2019/000443 KR2019000443W WO2019216517A1 WO 2019216517 A1 WO2019216517 A1 WO 2019216517A1 KR 2019000443 W KR2019000443 W KR 2019000443W WO 2019216517 A1 WO2019216517 A1 WO 2019216517A1
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- light
- brightness
- light emitting
- lighting device
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- 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
- H05B47/00—Circuit arrangements for operating light sources in general, i.e. where the type of light source is not relevant
- H05B47/10—Controlling the light source
- H05B47/105—Controlling the light source in response to determined parameters
-
- 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
- H05B47/00—Circuit arrangements for operating light sources in general, i.e. where the type of light source is not relevant
- H05B47/10—Controlling the light source
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62J—CYCLE SADDLES OR SEATS; AUXILIARY DEVICES OR ACCESSORIES SPECIALLY ADAPTED TO CYCLES AND NOT OTHERWISE PROVIDED FOR, e.g. ARTICLE CARRIERS OR CYCLE PROTECTORS
- B62J45/00—Electrical equipment arrangements specially adapted for use as accessories on cycles, not otherwise provided for
- B62J45/40—Sensor arrangements; Mounting thereof
- B62J45/41—Sensor arrangements; Mounting thereof characterised by the type of sensor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62J—CYCLE SADDLES OR SEATS; AUXILIARY DEVICES OR ACCESSORIES SPECIALLY ADAPTED TO CYCLES AND NOT OTHERWISE PROVIDED FOR, e.g. ARTICLE CARRIERS OR CYCLE PROTECTORS
- B62J45/00—Electrical equipment arrangements specially adapted for use as accessories on cycles, not otherwise provided for
- B62J45/40—Sensor arrangements; Mounting thereof
- B62J45/42—Sensor arrangements; Mounting thereof characterised by mounting
- B62J45/422—Sensor arrangements; Mounting thereof characterised by mounting on the handlebar
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62J—CYCLE SADDLES OR SEATS; AUXILIARY DEVICES OR ACCESSORIES SPECIALLY ADAPTED TO CYCLES AND NOT OTHERWISE PROVIDED FOR, e.g. ARTICLE CARRIERS OR CYCLE PROTECTORS
- B62J6/00—Arrangement of optical signalling or lighting devices on cycles; Mounting or supporting thereof; Circuits therefor
- B62J6/02—Headlights
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62J—CYCLE SADDLES OR SEATS; AUXILIARY DEVICES OR ACCESSORIES SPECIALLY ADAPTED TO CYCLES AND NOT OTHERWISE PROVIDED FOR, e.g. ARTICLE CARRIERS OR CYCLE PROTECTORS
- B62J6/00—Arrangement of optical signalling or lighting devices on cycles; Mounting or supporting thereof; Circuits therefor
- B62J6/02—Headlights
- B62J6/028—Headlights specially adapted for rider-propelled cycles with or without additional source of power
- B62J6/029—Headlights specially adapted for rider-propelled cycles with or without additional source of power characterised by the structure, e.g. casings
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21L—LIGHTING DEVICES OR SYSTEMS THEREOF, BEING PORTABLE OR SPECIALLY ADAPTED FOR TRANSPORTATION
- F21L4/00—Electric lighting devices with self-contained electric batteries or cells
- F21L4/005—Electric lighting devices with self-contained electric batteries or cells the device being a pocket lamp
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V21/00—Supporting, suspending, or attaching arrangements for lighting devices; Hand grips
- F21V21/08—Devices for easy attachment to any desired place, e.g. clip, clamp, magnet
- F21V21/088—Clips; Clamps
- F21V21/0885—Clips; Clamps for portable lighting devices
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V23/00—Arrangement of electric circuit elements in or on lighting devices
- F21V23/04—Arrangement of electric circuit elements in or on lighting devices the elements being switches
- F21V23/0442—Arrangement of electric circuit elements in or on lighting devices the elements being switches activated by means of a sensor, e.g. motion or photodetectors
- F21V23/0464—Arrangement of electric circuit elements in or on lighting devices the elements being switches activated by means of a sensor, e.g. motion or photodetectors the sensor sensing the level of ambient illumination, e.g. dawn or dusk sensors
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V33/00—Structural combinations of lighting devices with other articles, not otherwise provided for
- F21V33/008—Leisure, hobby or sport articles, e.g. toys, games or first-aid kits; Hand tools; Toolboxes
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- 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
- H05B47/00—Circuit arrangements for operating light sources in general, i.e. where the type of light source is not relevant
- H05B47/10—Controlling the light source
- H05B47/105—Controlling the light source in response to determined parameters
- H05B47/11—Controlling the light source in response to determined parameters by determining the brightness or colour temperature of ambient light
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- 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
- H05B47/00—Circuit arrangements for operating light sources in general, i.e. where the type of light source is not relevant
- H05B47/10—Controlling the light source
- H05B47/165—Controlling the light source following a pre-assigned programmed sequence; Logic control [LC]
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- 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
- H05B47/00—Circuit arrangements for operating light sources in general, i.e. where the type of light source is not relevant
- H05B47/10—Controlling the light source
- H05B47/175—Controlling the light source by remote control
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62J—CYCLE SADDLES OR SEATS; AUXILIARY DEVICES OR ACCESSORIES SPECIALLY ADAPTED TO CYCLES AND NOT OTHERWISE PROVIDED FOR, e.g. ARTICLE CARRIERS OR CYCLE PROTECTORS
- B62J6/00—Arrangement of optical signalling or lighting devices on cycles; Mounting or supporting thereof; Circuits therefor
- B62J6/02—Headlights
- B62J6/028—Headlights specially adapted for rider-propelled cycles with or without additional source of power
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
- F21W2107/00—Use or application of lighting devices on or in particular types of vehicles
- F21W2107/10—Use or application of lighting devices on or in particular types of vehicles for land vehicles
- F21W2107/13—Use or application of lighting devices on or in particular types of vehicles for land vehicles for cycles
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
- F21Y2115/00—Light-generating elements of semiconductor light sources
- F21Y2115/10—Light-emitting diodes [LED]
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- 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]
- H05B45/30—Driver circuits
- H05B45/32—Pulse-control circuits
- H05B45/325—Pulse-width modulation [PWM]
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- 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 present invention relates to a portable lighting device, and more particularly, to a portable lighting device capable of adaptive brightness adjustment capable of performing adaptive power saving.
- bicycle lighting is directly related to bicycle driving safety and is an essential accessory for the rider. This is especially essential when driving at night.
- a lighting device using a high output bright LED product is bright and safe, but there is a problem that the battery is quickly consumed.
- a lighting device using a low power dark LED can be used for a long time, but there is a problem that it is dark and unsafe.
- conventional portable lighting devices always irradiate a constant amount of light regardless of whether the environment is bright or dark. For example, assuming that the streets where several street lights are arranged are driven at night, the street lamps are spaced apart so that they are the brightest under the street lamps, but the sections between the street lamps and the street lamps are relatively dark. Therefore, when riding a bicycle on the night road alternates between the light and dark sections.
- the conventional bicycle lights whether bright or dark, had to constantly consume and waste power to maintain a constant brightness.
- the conventional portable lighting device has both a limitation of the amount of light irradiating light and a limitation of duration.
- One embodiment of the present invention is to adaptively adjust the brightness of the portable lighting device, so that the bright light is illuminated in the dark place and to reduce the intensity of the light in the bright place, it is an object to save the battery of the lighting device.
- One embodiment of the present invention measures the brightness of the front of a certain distance away from the user's position and controls the lighting based on the brightness, so that even when enjoying a high-speed exercise, such as driving a bicycle, the appropriate brightness control according to the direction of movement It is intended to perform.
- a portable lighting device capable of adaptive brightness adjustment includes a light emitting unit for irradiating light; A brightness sensor for measuring brightness of one area in front of a predetermined distance away from a current position; And a control unit controlling the amount of light emitted from the light emitting unit according to the brightness measured by the brightness detecting unit. It includes.
- the controller controls the amount of light by changing the width of an on-pulse section for operating the light emitting unit within the discontinuous signal controlling the light emitting unit, or controls the light intensity of the continuous signal controlling the light emitting unit. By changing the light amount can be controlled.
- the lighting apparatus may be controlled to maintain the brightness within a predetermined range by lowering the amount of light as the measured brightness is higher and increasing the amount of light as the measured brightness is lower.
- the controller may perform control based on a pulse width modulation (PWM) scheme, but control the brightness detector to measure brightness in an off pulse section in which the light emitter is not operated.
- PWM pulse width modulation
- the control unit may control to measure brightness for each of the off pulse sections, and determine a pulse width of a next on pulse section according to the measured brightness.
- an embodiment of the present invention further includes a speed detecting unit for detecting a moving speed of the lighting apparatus, and the controller controls the width or frequency of the on pulse section and the off pulse section differently according to the moving speed. Can be.
- control unit may control the frequency of the control signal based on the PWM is higher than the frequency that can be recognized by a person.
- the brightness sensor may measure luminance.
- the brightness sensor may include a pinhole type lens for collecting light generated from the front.
- the light emitting unit may include an upper light and a lower light disposed up and down, and the light emitting unit may be configured to operate any one of the upper light and the lower light, and the brightness sensor may be disposed between the upper light and the lower light.
- the front recognition area where the brightness sensing unit recognizes light and the light output area irradiated by the light emitting unit may overlap each other.
- the front recognition area in which the brightness sensing unit recognizes light may be disposed farther from the position of the lighting device than the light output area irradiated by the light emitting unit.
- one embodiment of the present invention may further include a detachable portion configured to be detachable to the user's body or a separate moving means.
- an embodiment of the present invention further includes a communication unit for performing short-range communication with another device, and the control unit may control the light-emitting unit to emit light when receiving a signal from the communication unit that the preset terminal is recognized at a short distance. have.
- the controller may collect the estimated running time information of the user from the user terminal and then control the light quantity of the light emitting unit according to the remaining power and the estimated running time information.
- a method of adaptively adjusting a brightness of a lighting device includes measuring brightness of a front area separated by a predetermined distance from a current position through a brightness sensing unit of the lighting device; Determining an amount of light to be irradiated from the light emitting unit of the lighting apparatus according to the measured brightness; And controlling the light emitting unit of the lighting apparatus according to the determined amount of light.
- the determining of the amount of light may include: controlling the amount of light by changing a width of an on pulse section for operating the light emitting part within a discontinuous signal for controlling the light emitting part, or continuously controlling the light emitting part.
- the amount of light can be controlled by changing the intensity of light with respect to the conventional signal.
- one embodiment of the present invention may include a brightness detecting unit and a control unit to perform adaptive brightness adjustment.
- the amount of light is controlled by adjusting the width of an ON pulse section in which an illumination device operates based on a PWM method, so that a small amount of light is output in a bright place and a large amount of light in a dark place. Output can save battery.
- the user recognizes the light of the lighting device together with the brightness of the surroundings, so that the brightness felt by the actual user can be maintained at a constant level, thereby ensuring the safety and visibility of the user.
- the conventional technology is configured to control the brightness of the lighting apparatus by measuring the illuminance of the current position
- the light of the lighting apparatus irradiated at the current position is inevitably considered in the measured illuminance. It is difficult to precisely control lighting in consideration of brightness.
- one embodiment of the present invention measures the luminance of the front away from the current position, it is possible to measure the exact actual ambient brightness without considering the light of the illumination device irradiated at the current position. And based on this, precise lighting control is possible.
- FIG. 1 is a conceptual diagram illustrating the function of an embodiment of the present invention.
- FIG. 2 is a block diagram of a configuration of a lighting apparatus according to an embodiment of the present invention.
- FIG. 3 is a block diagram of a configuration of a brightness sensor according to an exemplary embodiment of the present invention.
- FIG. 4 is a schematic diagram showing an arrangement between a light emitting unit and a brightness detecting unit of the lighting apparatus according to an embodiment of the present invention.
- PWM pulse width modulation
- FIG. 6A is a brightness graph sensed according to a user's progress direction
- FIG. 6B is a graph showing brightness of the light emitting unit output according to the user's progress direction
- FIG. 6C is a graph of brightness felt by the user according to the user's progress direction. to be.
- FIG. 7 is a table showing ambient brightness, illumination brightness, and battery saving degree according to moving distance.
- FIG 8 and 9 are conceptual views for explaining the arrangement of the light output area and the brightness recognition area according to an embodiment of the present invention.
- FIG. 10 is a graph of a PWM signal considering an off delay time according to an embodiment of the present invention.
- FIG. 11 is a flowchart illustrating a method for adaptively adjusting the brightness of the lighting apparatus according to an embodiment of the present invention.
- 'unit' includes a unit realized by hardware, a unit realized by software, and a unit realized by both.
- one unit may be realized using two or more pieces of hardware, and two or more units may be realized by one piece of hardware.
- ' ⁇ ' is not limited to software or hardware, and ' ⁇ ' may be configured to be in an addressable storage medium or may be configured to reproduce one or more processors.
- ' ⁇ ' means components such as software components, object-oriented software components, class components, and task components, and processes, functions, properties, procedures, and the like. Subroutines, segments of program code, drivers, firmware, microcode, circuits, data, databases, data structures, tables, arrays, and variables.
- the functionality provided within the components and the 'parts' may be combined into a smaller number of components and the 'parts' or further separated into additional components and the 'parts'.
- the components and ' ⁇ ' may be implemented to play one or more CPUs in the device or secure multimedia card.
- the "terminal” mentioned below may be implemented as a computer or a portable terminal that can access a server or another terminal through a network.
- the computer is, for example, a laptop equipped with a web browser (desktop), desktop (desktop), laptop (laptop), VR HMD (for example, HTC VIVE, Oculus Rift, GearVR, DayDream, PSVR, etc.) It may include.
- VR HMD can be used for PC (e.g. HTC VIVE, Oculus Rift, FOVE, Deepon, etc.) This includes all stand-alone models (eg Deepon, PICO, etc.) that are implemented independently.
- the portable terminal is, for example, a wireless communication device that ensures portability and mobility, and is not only a smart phone, a tablet PC, a wearable device, but also Bluetooth (BLE, Bluetooth Low Energy), NFC, RFID, and Ultrasonic (Ultrasonic). It may include a variety of devices equipped with a communication module, such as infrared, Wi-Fi (WiFi), LiFi (LiFi).
- Wi-Fi Wi-Fi
- LiFi LiFi
- network refers to a connection structure capable of exchanging information between respective nodes such as terminals and servers, and includes a local area network (LAN), a wide area network (WAN), and the Internet. (WWW: World Wide Web), wired and wireless data communication networks, telephone networks, wired and wireless television networks, and the like.
- wireless data networks examples include 3G, 4G, 5G, 3rd Generation Partnership Project (3GPP), Long Term Evolution (LTE), World Interoperability for Microwave Access (WIMAX), Wi-Fi, Bluetooth communication, Infrared communication, Ultrasound Communication, visible light communication (VLC), liFi (LiFi), and the like, but are not limited thereto.
- 3GPP 3rd Generation Partnership Project
- LTE Long Term Evolution
- WIMAX World Interoperability for Microwave Access
- Wi-Fi Bluetooth communication
- Infrared communication Ultrasound Communication
- VLC visible light communication
- LiFi LiFi
- the portable lighting device 100 may adaptively adjust the amount of light emitted from the lighting device 100 according to the ambient brightness.
- the portable lighting apparatus 100 may control the brightness to be maintained in a predetermined range by lowering the light quantity as the measured brightness is high and increasing the light quantity as the measured brightness is low. Can be. Through this, one embodiment of the present invention can save the battery of the lighting device (100).
- the lighting apparatus 100 includes a light emitting unit 110, a brightness detecting unit 120, a control unit 130, a communication unit 140, and a speed detecting unit 150.
- the light emitting unit 110 is a light source for irradiating light.
- it may be an LED, but may be various other light sources, and the present invention is not limited to any one example.
- the brightness sensor 120 may measure brightness of one area in front of a predetermined distance away from the current location.
- the brightness sensor 120 corresponds to a brightness sensor.
- the brightness detecting unit 120 according to an embodiment of the present invention does not detect the brightness of the current location, but detects an area in front of a predetermined distance. In the situation where the light source operates at night, the brightness around the current location is measured in consideration of the amount of light generated by the light source as well as the actual amount of light at night itself. However, when measuring the brightness of the front as in the embodiment of the present invention, it is possible to accurately measure how dark the situation is actually in the situation almost excluding the amount of light of the light source.
- the brightness sensor 120 may measure the brightness.
- Illuminance refers to an amount of light incident on an object surface, and a unit may be expressed as lx or lux.
- Luminance refers to an amount of light reflected from an object surface, and a unit may be expressed as cd / m 2.
- Conventional general techniques use an illuminance sensor for measuring illuminance, but one embodiment of the present invention measures luminance.
- Luminance is an effective metering unit for evaluating light and darkness as a general impression of space.
- the brightness sensor 120 may have a structure as shown in FIG. 3.
- the brightness detector 120 may include at least one of a condenser lens 121 and a pinhole type lens 122.
- the condenser lens 121 may intensively collect light generated from the front side. That is, the condenser lens 121 may amplify and collect the light amount to collect more light in a situation where light is insufficient.
- the pinhole type lens 122 may collect light of a long distance at a wide angle. Therefore, the pinhole type lens 122 is a very suitable element when measuring luminance.
- the pinhole type lens 122 may collect a light amount of a precise point of a long distance at a wide angle.
- the pinhole type lens 122 may have the same structure as that of the pinhole lens, and the hole portion of the pinhole lens into which the light is introduced may be formed as a long passage extending from the inside like a straw structure to block other noise light from being collected. It may be configured as a structure.
- the brightness sensor 120 may be disposed between the plurality of light sources to measure accurate light without interference from the light source of the light emitter 110.
- the brightness detection unit 120 may include an upward light 111 and a downward light ( 112).
- the light emitter 110 controls the uplight 111 or the downlight 112, and the selection of the uplight 111 or the downlight 112 may be performed by an input based on a user's button manipulation or the like. It may be made automatically according to the degree of the ambient luminance recognized by the unit 120.
- the controller 130 controls the amount of light emitted from the light emitter 110 according to the brightness measured by the brightness sensor 120.
- the controller 130 may control the light emitter 110 in two ways.
- the controller 130 may control based on a pulse width modulation (PWM) scheme.
- PWM pulse width modulation
- the PWM based control signal is a discrete signal. That is, the control signal may be configured in such a way that the signal of the on pulse section for operating the light emitting unit 110 and the signal of the off pulse section for stopping the operation of the light emitting unit 110 are repeated.
- the controller 130 allows the brightness sensor 120 to measure brightness for each of the off pulse sections, and controls the amount of light by adjusting the width of the next on pulse section based on the measured brightness.
- the first street light 410, the second street light 420, and the third street light 430 are installed in the driving path at predetermined intervals, and are all turned on.
- the bicycle is driven on a driving path provided with a first street light 410, a second street light 420, and a third street light 430.
- the width of the on pulse section of the control signal of the lighting device 100 decreases while the width of the off pulse section increases, and in the dark area between the street lamps, the width of the on pulse section of the control signal increases.
- the width of the off pulse section is reduced.
- the illuminance caused by the light emitted from the illumination device is high in the dark region and low in the bright region, as shown in the EL portion of FIG. 5.
- the frequency of the control signal is formed higher than a frequency that can be recognized by a person (for example, 60 Hz), the user may not recognize the flicker of the light emitting unit 110 well.
- the present invention may further include a speed detecting unit for detecting the moving speed of the lighting device (100).
- the controller 130 may control the frequency of the control signal in consideration of the moving speed of the lighting device 100 and the brightness measured by the brightness sensor 120.
- the controller 130 may control the light source based on the continuous signal, but may control the amount of light by changing the intensity of the light.
- a light source such as an LED that is used universally may be used, but depending on the surrounding brightness, the light intensity may be controlled to be high when it is dark, and the light intensity may be controlled to be low when it is bright.
- the amount of light output from the light emitting unit 110 is equal to that of FIG. 6B.
- Fig. 6a up and down can be configured in a Gaussian curve shape.
- the brightness experienced by the user may be such that there is no significant change in brightness within the preset range as shown in FIG. 6C. have. That is, the user does not feel dark depending on the surrounding environment while moving. Accordingly, there may be little eye fatigue provided to the actual user.
- the table of Figure 7 is a table showing the relationship between the brightness measured by the user and the brightness output from the light and the battery when the user is driving at night riding a bicycle. Referring to FIG. 7, it can be seen that the brightness of the bicycle lights increases or decreases whenever the street light passes as the moving distance increases. At this time, it can be seen that whenever the bicycle lights are reduced, the rate at which the battery can be saved increases.
- the brightness sensor 120 may measure luminance in two ways. As illustrated in FIG. 8, the front recognition area 200 in which the brightness detection unit recognizes light and the light output area 300 irradiated by the light emitting unit 110 may overlap each other. In addition, as shown in FIG. 9, the front recognition area 200 in which the brightness detecting unit 120 recognizes light is more than the light output area 300 irradiated by the light emitting unit 110. It may be located far from the location.
- the lighting device 100 can be installed and used at both sides or behind the front.
- the recognition area 200 and the light output area 300 overlap, an error for coping with proper brightness can be reduced.
- the timing of the recognition area 200 and the light output area 300 need not be changed according to the moving speed.
- the PWM control method of the two control methods of the controller 130 described above can be used, and in this case, since the luminance must be accurately measured in the off pulse period, the difficulty of implementation may be increased.
- the illumination device 100 is immediately recognized by immediately recognizing the brightness of the next moving area.
- the illumination device 100 can control the amount of light, which is very useful when the user moves by means of transportation. In this case, both PWM and light intensity can be used.
- the recognition area 200 and the light output area 300 are different from each other, the brightness sensor 120 only needs to continuously recognize the brightness, and the light emitter 110 only needs to continuously irradiate light. However, it can be utilized only when a moving means moving at a high speed in the future, such as a bicycle, can be used.
- the recognition area 200 and the light output area 300 are different from each other, there is a possibility that a proper brightness response error occurs due to the area difference. There is this.
- the timing of the moment of recognition and the moment of light output may vary according to the moving speed.
- the lighting device 100 further includes a communication unit 140 for performing short-range communication with other devices.
- the communicator 140 may perform short range communication based on a wired or wireless network.
- the controller 130 may control the light emitter 110 to emit light when receiving a signal from the communication unit 140 that the preset terminal is recognized at a short distance.
- the light emitting unit 110 of the lighting device 100 may emit welcome light when the user approaches the bicycle to use the bicycle.
- the lighting apparatus 100 may be paired with the user terminal to perform various functions.
- the user terminal is pre-installed with an application that can be paired with the lighting device 100 to input the setting, the user may input the estimated running time information into the application.
- the controller 130 may collect the estimated running time information of the user from the user terminal through the communication unit 140 and then control the amount of light of the light emitting unit 110 according to the remaining power and the estimated running time information. For example, when the user tries to ride the bicycle for only 30 minutes, the controller 130 checks how much remaining power remains, and then performs adaptive brightness adjustment for 30 minutes, depending on the degree of remaining power. You can control the brightness level differently.
- the lighting device 100 may be mounted on a bicycle or other mobility, and may be utilized when climbing. To this end, the lighting device 100 may further include a detachable part (not shown) configured to be detachable to a user's body or a separate moving means.
- the controller 130 may preferably be turned on when the light emitting unit 110 is turned off when the delay time elapsed.
- the brightness sensor 120 may sense the target area immediately after the delay time 600, which is the time point at which the off delay time elapses.
- the light emitting unit 110 has a delay time 600 for dimming light momentarily when it is off, such as the dimming line 700.
- the controller 130 may delay the on-time by the delay time 600 in the on-off output frequency control. Since the supply of the battery is stopped during the delay time 600, there is an effect of minimizing energy waste.
- the light emitting unit 110 may include an irradiation angle adjusting means (not shown) capable of adjusting the irradiation range.
- the irradiation angle adjusting means may be automatically controlled by the controller 130 or may be manually controlled by the user. If the irradiation angle is reduced, the amount of light is reduced, thereby saving the battery.
- FIG. 11 a method of adaptively adjusting the brightness of the lighting device 100 according to an embodiment of the present invention will be described in detail. Even if the description is omitted below, since the method is performed by the above-described lighting apparatus 100, it will be replaced with the above description.
- the lighting apparatus 100 measures the brightness of one area in front of the predetermined distance away from the current position through the brightness sensor 120 (S110).
- the lighting apparatus 100 determines the amount of light to be irradiated from the light emitting unit 110 of the lighting apparatus 100 according to the measured brightness (S120).
- the measured brightness may be a luminance value.
- the lighting apparatus 100 may emit light by controlling the light emitter 110 according to the determined amount of light (S130).
- the amount of light is controlled or the light emitting unit 110 is controlled by changing a width of an on pulse section for operating the light emitting unit 110 within a discontinuous signal controlling the light emitting unit 110.
- the amount of light can be controlled by changing the intensity of light with respect to a continuous signal.
- the steps S110 to S130 may be repeated for each predetermined time unit (for example, 100 ms).
- the control unit 130 and the brightness detecting unit 120 may include a memory in which a program is stored and a processor for executing the above program. Such an embodiment of the present invention may also be embodied in the form of a recording medium including instructions executable by a computer, such as a program module executed by the computer.
- Computer readable media can be any available media that can be accessed by a computer and includes both volatile and nonvolatile media, removable and non-removable media.
- computer readable media may include all computer storage media.
- Computer storage media includes both volatile and nonvolatile, removable and non-removable media implemented in any method or technology for storage of information such as computer readable instructions, data structures, program modules or other data.
Abstract
Description
Claims (15)
- 적응적 밝기 조절이 가능한 휴대용 조명장치에 있어서,광을 조사하는 발광부;현재 위치로부터 소정거리 떨어진 전방의 일 영역에 대한 밝기를 측정하는 밝기 감지부; 및상기 밝기 감지부에서 측정한 밝기에 따라 상기 발광부에서 조사하는 광량을 제어하는 제어부; 를 포함하며,상기 제어부는 상기 발광부를 제어하는 불연속적인 신호 내에서 상기 발광부를 동작시키는 온(on) 펄스 구간의 폭을 변경시킴으로써 상기 광량을 제어하거나, 상기 발광부를 제어하는 연속적인 신호에 대한 광의 세기를 변경함으로써 상기 광량을 제어하는 것인, 적응적 밝기 조절이 가능한 휴대용 조명장치.
- 제 1 항에 있어서,상기 조명장치는 측정된 밝기가 높을수록 상기 광량을 낮추고, 측정된 밝기가 낮을수록 상기 광량을 높임으로써, 기 설정된 범위 내의 밝기가 유지되도록 제어되는 것인, 적응적 밝기 조절이 가능한 휴대용 조명장치.
- 제 1 항에 있어서,상기 제어부는 PWM(Pulse Width Modulation) 방식에 기초하여 제어를 수행하되, 상기 발광부를 동작시키지 않는 오프(off) 펄스 구간에서 상기 밝기 감지부가 밝기를 측정하도록 제어하는 것인, 적응적 밝기 조절이 가능한 휴대용 조명장치.
- 제 3 항에 있어서,상기 제어부는 상기 오프 펄스 구간마다 밝기를 측정하도록 제어하고, 측정된 밝기에 따라 그 다음 온 펄스 구간의 펄스폭을 결정하는 것인, 적응적 밝기 조절이 가능한 휴대용 조명장치.
- 제 3 항에 있어서,상기 조명장치의 이동속도를 감지하는 속도감지부를 더 포함하며,상기 제어부는 상기 이동속도에 따라 상기 온 펄스 구간과 오프 펄스 구간의 폭이나 주파수를 상이하게 제어하는 것인, 적응적 밝기 조절이 가능한 휴대용 조명장치.
- 제 3 항에 있어서,상기 제어부는 상기 PWM에 기반한 제어신호의 주파수가 사람이 인식할 수 있는 주파수보다 높도록 제어하는 것인, 적응적 밝기 조절이 가능한 휴대용 조명장치.
- 제 1 항에 있어서,상기 밝기 감지부는 휘도(luminance)를 측정하는 것인, 적응적 밝기 조절이 가능한 휴대용 조명장치.
- 제 7 항에 있어서,상기 밝기 감지부는 전방으로부터 발생된 광을 수집하는 핀홀타입렌즈를 포함하는 것인, 적응적 밝기 조절이 가능한 휴대용 조명장치.
- 제 8 항에 있어서,상기 발광부는 위아래로 배치된 상향등과 하향등을 포함하며, 상기 상향등 및 하향등 중 어느 하나의 발광부가 동작하도록 구성되며,상기 밝기 감지부는 상기 상향등과 하향등 사이에 배치되는 것인,적응적 밝기 조절이 가능한 휴대용 조명장치.
- 제 1 항에 있어서,상기 밝기 감지부가 광을 인식하는 전방의 인식영역과 상기 발광부가 조사하는 광출력영역은 서로 중첩되는 것인, 적응적 밝기 조절이 가능한 휴대용 조명장치.
- 제 1 항에 있어서,상기 밝기 감지부가 광을 인식하는 전방의 인식영역은 상기 발광부가 조사하는 광출력영역보다 상기 조명장치의 위치로부터 먼 곳에 배치되는 것인, 적응적 밝기 조절이 가능한 휴대용 조명장치.
- 제 1 항에 있어서,상기 사용자의 신체나 별도의 이동수단에 탈착될 수 있도록 구성되는 탈착부를 더 포함하는 것인, 적응적 밝기 조절이 가능한 휴대용 조명장치.
- 제 1 항에 있어서,다른 장치와 근거리 통신을 수행하는 통신부를 더 포함하며,상기 제어부는 상기 통신부로부터 기 설정된 단말이 근거리에서 인식되었다는 신호를 수신할 경우 상기 발광부가 발광하도록 제어하는 것인, 적응적 밝기 조절이 가능한 휴대용 조명장치.
- 제 1 항에 있어서,상기 제어부는 사용자 단말로부터 사용자의 예상운행시간정보를 수집한 후, 잔존 전력과 상기 예상운행시간정보에 따라 상기 발광부의 광량을 제어하는 것인, 적응적 밝기 조절이 가능한 휴대용 조명장치.
- 적응적으로 조명장치의 밝기를 조절하는 방법에 있어서,조명장치의 밝기 감지부를 통하여 현재 위치로부터 소정거리 떨어진 전방의 일 영역에 대한 밝기를 측정하는 단계;상기 측정한 밝기에 따라 상기 조명장치의 발광부에서 조사할 광량을 결정하는 단계; 및상기 결정된 광량에 따라 상기 조명장치의 발광부를 제어하는 단계; 를 포함하며,상기 광량을 결정하는 단계는, 상기 발광부를 제어하는 불연속적인 신호 내에서 상기 발광부를 동작시키는 온(on) 펄스 구간의 폭을 변경시킴으로써 상기 광량을 제어하거나, 상기 발광부를 제어하는 연속적인 신호에 대한 광의 세기를 변경함으로써 상기 광량을 제어하는 것인, 적응적으로 조명장치의 밝기를 조절하는 방법.
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