TW202029835A - Lighting device and controlling method thereof - Google Patents

Abstract

A lighting device and a controlling method thereof are provided. The lighting device includes a plurality of light-emitting elements, a power driver, a plurality of ambient parameter detectors and a controller. The light-emitting elements are respectively controlled by a plurality of driving signals. The power driver provides driving signals. The ambient parameter detectors respectively detect a plurality of ambient parameters. The controller operates an ambient status analysis to generate an analysis result, and set the power driver to generate the driving signals according to the analysis result. The controller adjusts at least one of lighting energy and color temperature of the light-emitting elements according to the driving signals, respectively.

Description

Lighting equipment and its control method

The present invention relates to a lighting device and a control method thereof, and in particular to a smart lighting device and a control method thereof that can be adjusted according to the environmental state.

In the technical field of lighting equipment, the current outdoor road lighting fixtures need to meet the requirements of road regulations as a priority. In the conventional technology, the method used to meet the road brightness uniformity is to redesign the optical lens in the lighting equipment to meet the requirements of the regulations. However, in the actual situation, the performance of the lighting equipment is different from the preset goal due to the influence of environmental factors on the road. To fully comply with regulations and road environments, it is necessary to adjust the light distribution multiple times or redesign another lens; however, when the diversification of environmental changes increases, the conventional technology will not be able to fully adopt a single fixed method. Adapting to diverse environmental conditions also inhibits the performance of lighting equipment.

The invention provides a lighting device and a control method thereof, which can effectively improve visual comfort.

The lighting device of the present invention includes a plurality of light-emitting elements, a power driver, a plurality of environmental parameter sensors, and a controller. The light-emitting elements are arranged in the main body and are controlled by a plurality of driving signals respectively. The power driver is coupled to the light-emitting element and provides a driving signal. The environmental parameter sensor is set on the main body to detect multiple environmental parameters respectively. The controller is coupled to the power driver and the environmental parameter sensor, performs environmental state analysis according to the environmental parameters to generate analysis results, and according to the analysis results, causes the power driver to generate driving signals. Wherein, the controller adjusts at least one of the light-emitting energy of the light-emitting element and the color temperature of the light by the driving signal.

The control method of the lighting equipment of the present invention includes: setting a plurality of environmental parameter sensors to detect a plurality of environmental parameters respectively; performing environmental state analysis based on the environmental parameters and generating analysis results; and generating multiple environmental parameters based on the analysis results. Driving signal; and, according to the driving signal, to adjust at least one of the luminous energy and the display color temperature of the multiple light-emitting elements in the lighting device.

Based on the foregoing, the lighting device of the present invention detects multiple environmental parameters of the environment, and adjusts at least one of the luminous energy of the light-emitting element and the color temperature of the lighting according to the environmental parameters, thereby adjusting the light type generated by the lighting device. In this way, the lighting device can dynamically adjust the generated lighting light pattern in response to changes in the environmental state of the environment, so as to optimize the visual uniformity of the road surface and enhance the visual comfort of the user.

In order to make the above-mentioned features and advantages of the present invention more comprehensible, the following specific embodiments are described in detail in conjunction with the accompanying drawings.

Please refer to FIG. 1. FIG. 1 is a schematic diagram of a lighting device according to an embodiment of the present invention. The lighting device 100 includes a controller 110, a power driver 120, environmental parameter sensors 131 to 13M, and light emitting elements 141 to 14N. The light-emitting elements 141-14N are arranged in a main body of the lighting device 100, and are controlled by a plurality of driving signals DRV1-DRVN, respectively. There are multiple environmental parameter sensors 131 to 13M, which are coupled to the controller 110 and are respectively arranged at multiple positions of the main body. The environmental parameter sensors 131 to 13M are used to detect a plurality of environmental parameters EP1 to EPM, respectively, and transmit the detected environmental parameters EP1 to EPM to the controller 110. The power driver 120 is coupled to the controller 110 and coupled to the light-emitting elements 141-14N to provide driving signals DRV1~DRVN. The controller 110 analyzes the environmental state according to the environmental parameters EP1~EPM, and generates the analysis result. The controller 110 generates a control signal CTR according to the analysis result to control the power driver 140 to generate driving signals DRV1 to DRVN.

In this embodiment, the environmental parameter sensors 131 to 13M can be raindrop sensors, humidity sensors, fog sensors, brightness sensors, and image capture devices, respectively, and are used to detect raindrop state parameters respectively , Humidity status parameters, fog status parameters, brightness status parameters and environmental images and other environmental parameters EP1~EPM. The controller 110 analyzes the environmental parameters EP1 to EPM generated by the environmental parameter sensors 131 to 13M, and generates a control signal CTR based on the analysis result. The controller 110 instructs the power driver 120 to generate corresponding driving signals DRV1 to DRVN through the generated control signal CTR. The light-emitting elements 141-14N adjust at least one of the provided illumination light type and the illumination color temperature according to the driving signals DRV1-DRVN.

For example, when the controller 110 determines that the environmental state is rain, fog, and high humidity according to the raindrop state parameters, humidity state parameters, and fog state parameters, the controller 110 may determine that the lighting device 100 is suitable for producing The illumination color temperature is relatively low, and suitable for the illumination light type with high reflection brightness. The controller 110 also generates a corresponding control signal CTR to instruct the power driver 120 to generate corresponding driving signals DRV1 to DRVN. In this way, the light-emitting elements 141-14N can adjust the provided illumination light type and the illumination color temperature (2700K-3000K) according to the driving signals DRV1-DRVN. In contrast, when the controller 110 determines that the environmental state is a non-rainy and fog-free state according to the raindrop state parameters and the humidity state parameters, the controller 110 may determine that the lighting device 100 is suitable for generating a medium temperature higher than the aforementioned low color temperature. , High color temperature lighting color temperature (4000K~5000K), and suitable for low-reflective lighting type. The controller 110 also generates a corresponding control signal CTR to instruct the power driver 120 to generate corresponding driving signals DRV1 to DRVN.

The above-mentioned adjustment operation of the illumination light type can be performed by adjusting the ratio of the light-emitting energy of the light-emitting elements 141-14N through the driving signals DRV1 to DRVN. Wherein, the controller 110 can instruct the power driving circuit 120 to generate a plurality of the same or different driving signals DRV1~DRVN according to the control signal CTR through the control signal CTR, and use the driving signals DRV1~DRVN to make the light emitting element 141~ The luminous energy of 14N is completely the same, completely different, or partially the same to adjust the ratio of the luminous energy of the light-emitting elements 141 to 14N.

Incidentally, in the embodiment of the present invention, the controller 110 receives the power voltage PWR and transmits the power voltage PWR to the power driver 120. The power driver 120 generates driving signals DRV1 ˜DRVN according to the received power voltage PWR and the control signal CTR.

In addition, in this embodiment, a lookup table 111 may be set in the controller 110. The look-up table 111 can be used to record the corresponding relationship between the analysis result of the environmental state analysis and the illumination light type and the illumination color temperature, and can record the correspondence between the illumination light type, the illumination color temperature and the control signal CTR. In this way, when the controller 110 generates the analysis result, it can look up the target illumination light type and the target illumination color temperature through the lookup table 111 according to the analysis result, and use the lookup table 111 according to the target illumination light type and the target illumination color temperature. Find out the control signal CTR for output. In addition, the controller 110 can store the analysis result in a storage device. The storage device may be a memory built into the controller 110 or externally attached to the controller 110, or any form of storage medium, and is not particularly limited.

Please refer to FIG. 2 below. FIG. 2 is a schematic diagram of an implementation of a lighting device according to an embodiment of the present invention. The lighting device 200 has a main body 201, light-emitting elements 241 to 243, and environmental parameter sensors 231 and 232. The main body 201 has an opening area OPEN, and the light emitting elements 241 to 243 are respectively arranged on three different sides of the opening area OPEN in a lateral manner. In this embodiment, the shape of the opening area OPEN is rectangular. In other embodiments of the present invention, the shape of the opening area OPEN can be arc, polygon or irregular, and there is no fixed limit. In the open area OPEN on the main body 201, a light guide element LGP is additionally provided. The light guide element LGP is arranged between the light emitting elements 241 to 243, and the shape of the light guide element LGP corresponds to the shape of the opening area OPEN. The environmental parameter sensor 231 is disposed above the main body 201, wherein the environmental parameter sensor 231 may be at least one of a raindrop sensor, a humidity sensor, and a mist sensor. In addition, the environmental parameter sensor 232 can be disposed under the main body 201, and the environmental parameter sensor 232 can be at least one of a brightness sensor and an image capturer. Among them, the image capture device can be used to capture the environment image (such as the image of the road) under the lighting device 200, and to detect the road surface state of the road (whether the road surface is flat or not, and the road surface is wet or dry). The brightness sensor can detect the degree of light reflection on the road surface and obtain the brightness state parameters.

For example, when the lighting device 200 determines that the environment is no fog, no rain, dry road surface and the lighting color temperature is set to a relatively high value (for example, 4000K), the luminous energy generated by the light-emitting elements 241, 243, 242 The ratio can be adjusted to 2:1:2, and it produces an illuminating light type with fewer forward light pairs and high color temperature. On the other hand, when the lighting device 200 determines that the environment is foggy, rainy, or wet, and the lighting color temperature is set to a relatively low value (for example, 3000K), the ratio of the luminous energy produced by the light-emitting elements 241, 243, 242 It can be adjusted to 1:1:1, and produces an illuminating light type with more forward light exposure and low color temperature.

Incidentally, the light emitting elements 241 to 243 can be constructed by multiple light emitting diodes. In this embodiment, both the controller and the power driver can be arranged inside the body 201.

Please refer to FIG. 3. FIG. 3 is a schematic diagram of another implementation of the lighting device according to the embodiment of the present invention. The lighting device 300 has a body 301, a controller 310, driving circuits 321 to 324, and light emitting elements 341 to 344. The main body 301 has an active surface, and the light-emitting elements 341 to 344 are respectively arranged in a plurality of different positions of the active surface in a direct manner. In the embodiment of the present invention, the driving circuits 321 to 324 are used to form a power driver. In addition, the light emitting elements 341 to 344 respectively generate color lights of different wavelengths. For example, the light emitting elements 341 to 344 respectively generate yellow light, blue light, red light, and green light. The areas of the partitions where the light-emitting elements 341 to 344 are respectively configured may be all the same, partially the same, or all different.

In addition, when adjusting the lighting color temperature and/or the lighting light type, the controller 310 may instruct the driving circuits 321 to 324 to adjust the light emitting energy of the light emitting elements 341 to 344, respectively. Among them, the light-emitting energy of the light-emitting elements 341 to 344 may be the same, partly the same, or all different. In this embodiment, the light emitting elements 341 to 344 may be constructed by multiple light emitting diodes.

On the other hand, in the embodiment of the present invention, the environmental parameter sensor may be arranged in multiple positions of the main body as in the embodiment of FIG. 2, which will not be repeated here.

Next, please refer to FIG. 4, which is a schematic diagram of another implementation of the lighting device according to the embodiment of the present invention. In FIG. 4, the light-emitting elements in the lighting device 400 are arranged in a direct manner, and the light-emitting elements are composed of a plurality of light-emitting diodes LD1 and are arranged in different partitions 410-440. Each partition 410-440 can be controlled by a driving circuit, and generate light-emitting energy according to the corresponding driving signal. There is no fixed limit on the number of light emitting diodes LD1 in each zone 410-440. In this embodiment, the number of light-emitting diodes LD1 in each partition 410-440 is the same. In other embodiments of the present invention, the number of light-emitting diodes LD1 in each partition 410-440 may be different. the same. Alternatively, the number of light emitting diodes LD1 in the partitions 410 to 440 of the first part is the same, and the number of light emitting diodes LD1 in the partitions 410 to 440 of other parts is different. In addition, the shapes of the partitions 410 to 440 are not necessarily rectangular, and the drawing in FIG. 4 is only an example for illustration, and is not intended to limit the scope of the present invention.

Please refer to FIG. 5 below. FIG. 5 is a schematic diagram of a lighting device according to another embodiment of the present invention. The lighting device 500 includes a controller 510, a power driver 520, environmental parameter sensors 531 to 53M, and light emitting elements 541 to 542. The controller 510 is coupled to environmental parameter sensors 531 to 53M, wherein the environmental parameter sensors 531 to 53M are used to detect a plurality of environmental parameters EP1 to EPM, and provide the environmental parameters EP1 to EPM to the controller 510. The controller 510 performs environmental state analysis according to the environmental parameters EP1~EPM to generate an analysis result, and the controller 510 generates a control signal CTR according to the analysis result. In this embodiment, the power driver 520 includes a plurality of driving circuits 521 to 522. The control signal CTR generated by the controller 510 includes control signals CTR1 and CTR2, and the control signals CTR1 and CTR2 correspond to the control signals CTR1 and CTR2 of the driving circuits 521 to 522, respectively. On the other hand, the controller 510 transmits the power supply voltages PWR1 and PWR2 to the driving circuits 521 to 522. The power supply voltages PWR1 and PWR2 can be generated according to the power supply voltage PWR. The power supply voltage PWR can be the same as the power supply voltages PWR1 and PWR2 or different. The same, and the power supply voltages PWR1 and PWR2 may be the same or different from each other.

The driving circuits 521 and 522 can respectively generate driving signals DRV1 and DRV2 according to the received power voltages PWR1 and PWR2 and the control signals CTR1 and CTR2, wherein the driving signals DRV1 and DRV2 are provided to the light emitting elements 541 and 542, respectively. The light-emitting elements 541 and 542 generate light-emitting energy according to the driving signals DRV1 and DRV2, respectively.

According to the above description, it is not difficult to know that the controller 510 of the embodiment of the present invention can control the driving signals 521, 522 through the control signals CTR1 and CTR2 to generate the driving signals DRV1 and DRV2 through the analysis results of the environmental state, and then by The driving signals DRV1 and DRV2 adjust the ratio of the luminous energy generated by the light-emitting elements 541 and 542 to adjust at least one of the illuminating light type and the illuminating color temperature generated by the lighting device 500.

In the embodiment of the present invention, the controller 510 may be a processor with computing capability. Alternatively, the controller 510 can be designed through a hardware description language (Hardware Description Language, HDL) or any other digital circuit design method known to those with ordinary knowledge in the art, and through a field programmable logic gate array ( Field Programmable Gate Array (FPGA), complex programmable logic device (Complex Programmable Logic Device, CPLD) or special application integrated circuit (Application-specific Integrated Circuit, ASIC) to implement the hardware circuit. In addition, the drivers 521 and 522 can be implemented by using a driving circuit well known to those skilled in the art, and there is no particular limitation.

It should be noted that, in the embodiment of the present invention, the controller 510 may have a communication device 511. The communication device 511 may be any form of wireless or wired communication device. The communication device 511 is used for coupling with a remote electronic device (not shown) for information transmission. In the embodiment of the present invention, the communication device 511 can be used to transmit the analysis result of the environment state with the remote electronic device. In this embodiment, the remote electronic device can be any type of electronic device known to those with ordinary knowledge in the art, and there is no particular limitation.

In the embodiment of the present invention, when multiple lighting equipment devices (such as street lamps) are installed in an area, one of the lighting equipment can be set as the master lighting equipment, and the other lighting equipment can be set as the secondary lighting equipment. equipment. The main lighting device can perform the analysis action of the environmental state of the area, and transmit the analysis result of the environmental state to other slave lighting devices through the communication device. In this way, all lighting equipment can adjust the generated lighting light type and lighting color temperature according to the analysis results of the environmental state, and improve the uniformity of road lighting and visual comfort.

Please refer to FIG. 6. FIG. 6 illustrates a control method of a lighting device according to an embodiment of the present invention. In FIG. 6, in step S610, multiple environmental parameter sensors are set to detect multiple environmental parameters respectively. Step S620 performs environmental state analysis according to environmental parameters, and generates analysis results. Next, step S630 generates a plurality of driving signals according to the analysis result. In addition, step S640 adjusts at least one of the light-emitting energy and the display color temperature of the multiple light-emitting elements in the lighting device according to the driving signal.

The implementation details of the above steps have been described in detail in the foregoing embodiments, and will not be repeated here.

Please refer to FIG. 7. FIG. 7 illustrates a control method of a lighting device according to another embodiment of the present invention. In FIG. 7, step S710 executes raindrop sensing, temperature sensing, fog sensing, image capture, and light sensing of the environment where the lighting device is located, and in step S720, the controller executes the sensing result of step S710 judgment. Here, the controller may analyze the environment state according to the sensing result of step S710, and generate the analysis result of the environment and the road surface in step S730. Step S741 is to control the dimming ratio of the multiple light-emitting elements, thereby controlling the generated illumination light type, and step S742 is to control the color ratio of the multiple light-emitting elements, and thereby to control the generated lighting color temperature. control.

According to the results generated in steps S741 and S742, step S750 can control and output the adjusted illumination light type and illumination color temperature. Wherein, if the lighting device is a direction-finding lighting device as shown in FIG. 2, the lighting light type adjustment action can be achieved by adjusting the ratio of the lighting energy of the lighting elements on different sides. If the lighting device is a direct-type lighting device as shown in Figure 3 and Figure 4, the luminous energy of the light-emitting elements in different zones can be adjusted to achieve the adjustment action of the illuminating light type, and/or for generating The light-emitting elements of different colors adjust the light-emitting energy and thereby adjust the color temperature of the lighting. Finally, in step S760, it is possible to improve the visual smoothness of the road surface and the visual comfort.

In summary, the present invention performs multiple parameter detection and analysis actions for the environmental state of the lighting device, and adjusts at least one of the light-emitting energy and the lighting color temperature of the multiple light-emitting elements according to the analysis result of the environmental state. In this way, the lighting equipment can dynamically adjust the lighting light type and lighting color temperature according to the weather conditions and road conditions of the environment where the lighting equipment is located. In response to changing environmental conditions, it can effectively improve visual comfort and visual flatness of the road surface, and enhance the performance of lighting equipment.

Although the present invention has been disclosed in the above embodiments, it is not intended to limit the present invention. Anyone with ordinary knowledge in the technical field can make some changes and modifications without departing from the spirit and scope of the present invention. The scope of protection of the present invention shall be determined by the scope of the attached patent application.

100, 200, 300, 400, 500: lighting equipment 110, 310, 510: Controller 120: power driver 321~324, 521, 522: drive circuit 131~13M, 231, 232, 531~53M: environmental parameter sensor 141~14N, 241~243, 541, 542: Light-emitting element 511: Communication Device 201: Subject 410~440: partition LD1: Light-emitting diode DRV1~DRVN: drive signal EP1~EPM: Environmental parameters OPEN: opening area LGP: light guide element CTR, CTR1, CTR2: control signal PWR, PWR1, PWR2: power supply voltage 111: lookup table S610~S640, S710~S750: Control procedure of lighting equipment

Fig. 1 is a schematic diagram of a lighting device according to an embodiment of the present invention. FIG. 2 is a schematic diagram of an implementation manner of a lighting device according to an embodiment of the present invention. FIG. 3 is a schematic diagram of another implementation of the lighting device according to the embodiment of the present invention. FIG. 4 is a schematic diagram of another implementation of the lighting device according to the embodiment of the present invention. Fig. 5 is a schematic diagram of a lighting device according to another embodiment of the present invention. Fig. 6 shows a control method of a lighting device according to an embodiment of the present invention. Fig. 7 shows a control method of a lighting device according to another embodiment of the present invention.

100: lighting equipment

110: Controller

120: power driver

131~13M: Environmental parameter sensor

141~14N: Light-emitting element

DRV1~DRVN: drive signal

EP1~EPM: Environmental parameters

CTR: Control signal

111: lookup table

PWR: power supply voltage

Claims (18)

A lighting device including: A plurality of light-emitting elements are arranged in a main body and are respectively controlled by a plurality of driving signals; A power driver coupled to the light-emitting elements to provide the driving signals; A plurality of environmental parameter sensors are arranged on the main body to detect a plurality of environmental parameters respectively; and A controller, coupled to the power driver and the environmental parameter sensors, performs an environmental state analysis based on the environmental parameters to generate an analysis result, and causes the power driver to generate the driving signals according to the analysis result , The controller uses the driving signals to adjust at least one of the light-emitting energy and the color temperature of the light-emitting elements. According to the lighting device described in claim 1, wherein the controller uses the driving signals to adjust the ratio of the luminous energy of the light-emitting elements, thereby adjusting an illumination light type generated by the lighting device. The lighting device described in claim 1, wherein the environmental parameter sensors include a raindrop sensor, a humidity sensor, a fog sensor, a brightness sensor, and an image capture The devices are used to detect a raindrop state parameter, a humidity state parameter, a fog state parameter, a brightness state parameter, and an environmental image. According to the lighting device described in claim 1, wherein the controller adjusts the color temperature of the lighting generated by the light-emitting elements through the driving signals according to the raindrop state parameter, the humidity state parameter, and the fog state parameter. According to the lighting device described in the first item of the scope of patent application, the light-emitting elements are respectively arranged on multiple sides of an opening area in the main body. As described in item 5 of the scope of patent application, the lighting device further includes a light guide element disposed between the light emitting elements on the opening area. In the lighting device described in item 1 of the scope of patent application, the light-emitting elements are jointly arranged on an active surface of the main body. According to the lighting device described in item 7 of the scope of patent application, the light-emitting elements are divided into a plurality of partitions according to the arrangement positions on the active surface, and the light-emitting elements of each partition generate light-emitting energy according to corresponding driving signals. For the lighting device described in item 7 of the scope of the patent application, the luminous energy provided by the partitions may be all the same, partly the same, or all different. For the lighting device described in item 7 of the scope of the patent application, the areas of the partitions may be the same, partly the same, or all different. The lighting device described in item 1 of the scope of patent application, wherein the power driver includes: A plurality of driving circuits coupled to the controller, receiving a power supply voltage and generating the driving signals according to a plurality of control signals, Wherein, the controller generates the control signals according to the analysis result. For the lighting device described in item 11 of the scope of patent application, the controller includes a look-up table that records the corresponding relationship between the analysis result of the environmental state analysis and a target lighting light type and a target lighting color temperature. The controller generates the control signals according to the target illumination light type and the target illumination color temperature. According to the lighting equipment described in claim 1, wherein the controller is further coupled to a remote electronic device through a communication device for transmitting the analysis result to the remote electronic device. A method for controlling lighting equipment includes: Set up multiple environmental parameter sensors to detect multiple environmental parameters separately; Perform an environmental state analysis based on the environmental parameters, and generate an analysis result; Generate a plurality of driving signals according to the analysis result; and According to the driving signals, at least one of the luminous energy and the display color temperature of the multiple light-emitting elements in the lighting device is adjusted respectively. For the control method of the lighting device described in claim 14, wherein the driving signals correspond to the light-emitting elements, and the step of adjusting the light-emitting energy of the light-emitting elements in the lighting device according to the driving signals include: According to the driving signals, the ratio of the luminous energy of the light-emitting elements is adjusted respectively, and thereby an illuminating light pattern generated by the illuminating device is adjusted. As for the control method of the lighting device described in claim 14, wherein the steps of setting the environmental parameter sensors to detect the environmental parameters respectively include: Set up a raindrop sensor, a humidity sensor, a fog sensor, a brightness sensor, and an image capture device to detect a raindrop state parameter, a humidity state parameter, a fog state parameter, and a Brightness state parameters and an environmental image. According to the method for controlling the lighting device described in item 16 of the scope of patent application, the step of separately adjusting the lighting color temperature of the light-emitting elements in the lighting device according to the driving signals includes: The driving signals are used to adjust the color temperature of the lighting generated by the light-emitting elements according to the raindrop state parameter, the humidity state parameter, and the fog state parameter. The control method of lighting equipment as described in item 14 of the scope of patent application further includes: A communication device is connected with a remote electronic device to perform the transmission action of the analysis result with the remote electronic device.

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