Constant illuminance lighting control device and method thereof

Abstract

To provide a constant illuminance lighting control device and a method thereof.SOLUTION: A constant illuminance lighting control device includes a light detection module and a processing module. The light detection module detects the illuminance of a target area, and the illuminance of the target area is provided by a lighting device. The processing module includes a signal register, and stores a dimming signal corresponding to the illuminance of the target area in the signal register. The illuminance serves as an original value of the dimming signal. The processing module executes a dimming signal tracking program, compares the illuminance of the target area with target illuminance to generate an illuminance difference signal, calculates an illumination correction step length based on the illuminance difference signal to reduce the illumination correction step length, generates a real-time dimming signal based on the illumination correction step length, and transmits it to the lighting device to dim the light. The processing module stores the real-time dimming signal in the signal register, replacing the original value of the dimming signal, and repeatedly executes the dimming signal tracking program until the illuminance of the target area is substantially equal to the target illuminance.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a lighting control device, and more particularly to a constant illuminance lighting control device, and a constant illuminance lighting control method for the device. [Background technology]

[0002] With the advancement of science and technology, the field of intelligent lighting is also developing rapidly, and various new applications such as energy-saving lighting, health lighting, and personalized lighting are emerging. To add more imagination and beauty to spaces, various constant-illuminance lighting solutions have also emerged. Traditional constant-illuminance lighting solutions mainly use sensors attached to lighting devices to control dimming. However, due to the influence of environmental and other factors, constant-illuminance lighting solutions still cannot stably and effectively maintain a constant illuminance in the target area, and therefore cannot meet the needs of practical applications.

[0003] Although CN Patent Application Publication No. 101124853 and CN Patent Application Publication No. 111511071 both disclose improved dimming techniques, they still cannot effectively solve the above problems. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Chinese Patent Application Publication No. 101124853 [Patent Document 2] Chinese Patent Application Publication No. 111511071 Summary of the Invention [Problem to be solved by the invention]

[0005] SUMMARY OF THE INVENTION An object of the present invention is to provide a constant illuminance lighting control system and method. [Means for solving the problem]

[0006] The present invention provides a constant illuminance lighting control device including a light detection module and a processing module. The light detection module detects the illuminance of a target area, where the illuminance of the target area is provided by a lighting device. The processing module includes a signal register and stores a dimming signal corresponding to the illuminance of the target area in the signal register, where the dimming signal is used as an original value of the dimming signal. The processing module executes a dimming signal tracking program to compare the illuminance of the target area with a target illuminance to generate an illuminance difference signal, calculate an illumination correction step length based on the illuminance difference signal to reduce the illumination correction step length, generate a real-time dimming signal based on the illumination correction step length, and send the real-time dimming signal to the lighting device to perform dimming. The processing module stores the real-time dimming signal in the signal register, replacing the original value of the dimming signal, and repeatedly executes the dimming signal tracking program until the illuminance of the target area is substantially equal to the target illuminance.

[0007] In one refinement of the present invention, when the illumination difference signal is greater than a first threshold, the illumination correction step length is a first step length. When the illumination difference signal is less than the first threshold but greater than a second threshold, the illumination correction step length is a second step length. When the illumination difference signal is less than the second threshold but greater than a third threshold, the illumination correction step length is a third step length. When the illumination difference signal is less than the difference value between the third threshold and the illumination of the target area, the illumination correction step length is a fourth step.

[0008] In a refinement of the invention, the first step length is greater than the second step length, the second step length is greater than the third step length, and the third step length is greater than the fourth step length.

[0009] In one improvement of the present invention, the first step length is 1.1 to 1.6 times the second step length, the second step length is 1.2 to 2 times the third step length, and the third step length is 2.5 to 6.5 times the fourth step length.

[0010] In one refinement of the present invention, when the illuminance of the target area is substantially equal to the target illuminance, the lighting device executes an auto-adjustment mode to maintain an illuminance difference value between the illuminance of the target area and the target illuminance less than a preset difference value.

[0011] The present invention also provides a constant illuminance lighting control method, including the steps of: detecting an illuminance of a target area using a light detection module, the illuminance of the target area being provided by a lighting device; storing a dimming signal corresponding to the illuminance of the target area in a signal register of the processing module by a processing module, the dimming signal being used as an original value of the dimming signal; executing a dimming signal tracking program by the processing module to compare the illuminance of the target area with a target illuminance and generate an illuminance difference signal; calculating an illumination correction step length based on the illuminance difference signal, reducing the illumination correction step length, generating a real-time dimming signal based on the illumination correction step length, and sending the real-time dimming signal to the lighting device to perform dimming; storing the real-time dimming signal in a signal register by the processing module, the real-time dimming signal replacing the original value of the dimming signal; and repeatedly executing the dimming signal tracking program until the illuminance of the target area is substantially equal to the target illuminance.

[0012] In one refinement of the present invention, when the illumination difference signal is greater than a first threshold, the illumination correction step length is a first step length. When the illumination difference signal is less than the first threshold but greater than the first threshold, the illumination correction step length is a second step. When the illumination difference signal is less than the second threshold but greater than a third threshold, the illumination correction step length is a third step length. When the illumination difference signal is less than the difference value between the third threshold and the target illumination, the illumination correction step length is a fourth step length.

[0013] In a refinement of the invention, the first step length is greater than the second step length, the second step length is greater than the third step length, and the third step length is greater than the fourth step length.

[0014] In one improvement of the present invention, the first step length is 1.1 to 1.6 times the second step length, the second step length is 1.2 to 2 times the third step length, and the third step length is 2.5 to 6.5 times the fourth step length.

[0015] As a refinement of the present invention, the method further includes the step of, when the illuminance of the target area is substantially equal to the target illuminance, executing an auto-adjustment mode by the lighting device to maintain an illuminance difference value between the illuminance of the target area and the target illuminance less than a preset difference value. [Effects of the Invention]

[0016] Based on the above, the constant illuminance lighting control device and method disclosed in the present invention may have one or more of the following advantages. (1) As can be seen from the above disclosure, the constant illuminance lighting control device includes a light detection module and a processing module. The light detection module detects the illuminance of a target area, which is provided by a lighting device. The processing module includes a signal register and stores a dimming signal corresponding to the illuminance of the target area in the signal register, which serves as the original value of the dimming signal. The processing module executes a dimming signal tracking program to compare the illuminance of the target area with the target illuminance to generate an illuminance difference signal, calculate an illumination correction step length based on the illuminance difference signal to reduce the illumination correction step length, generate a real-time dimming signal based on the illumination correction step length, and send the real-time dimming signal to the lighting device to perform dimming. The processing module stores the real-time dimming signal in the signal register, replacing the original value of the dimming signal, and repeatedly executes the dimming signal tracking program until the illuminance of the target area is substantially equal to the target illuminance. As can be seen from the above, the constant illuminance lighting control device can execute a special dimming signal tracking program, which allows the real-time dimming signal to track the dimming signal corresponding to the target illuminance with an extremely small step length, thereby achieving stepless dimming. Therefore, the constant illuminance lighting control device can achieve high efficiency and meet the requirements of practical applications. (2) As can be seen from the above disclosure, the constant illuminance lighting control device includes a multi-step step length adjustment mechanism. When the illuminance difference signal is greater than the first threshold, the illuminance correction step length is the first step length. When the illuminance difference signal is smaller than the first threshold but greater than the first threshold, the illuminance correction step length is the second step length. When the illuminance difference signal is smaller than the second threshold but greater than the third threshold, the illuminance correction step length is the third step length. When the illuminance difference signal is smaller than the difference between the third threshold and the target illuminance, the illuminance correction step length is the fourth step length. Furthermore, the first step length is greater than the second step length. The second step length is greater than the third step length. The third step length is greater than the fourth step length. Therefore, the constant illuminance lighting control device can achieve precise stepless dimming and smooth changes in the brightness of the lighting device. Therefore, the constant illuminance lighting control device can effectively improve the lighting effect of the lighting device. (3) As can be seen from the above disclosure, the lighting device can further implement an automatic adjustment mode. When the lighting device implements the automatic adjustment mode, the brightness of the lighting device can be appropriately changed to maintain the illuminance difference value between the illuminance of the target area and the target illuminance smaller than the preset difference value. Therefore, the illuminance of the target area can be maintained at a constant illuminance state for a long period of time to meet the user's needs. (4) As can be seen from the above disclosure, the lighting device further includes a time control module, and the control module of the lighting device can actively adjust the brightness of the lighting device in a preset change mode based on the setting of the time control module. Therefore, the brightness of the lighting device can change according to the brightness of the environment, and the illuminance of the target area can be kept constant or have a specific change mode. In this way, the lighting device can meet the requirements of various different applications. (5) As can be seen from the above disclosure, the lighting device may further include a power monitoring module and a display module. Therefore, the control module of the lighting device can obtain operating status information (current, voltage, etc.) of the lighting device through the power monitoring module and display the operating status information through the display module. Therefore, the user can directly obtain the power consumption of the lighting device and other necessary information, and can take necessary measures in a timely manner when the lighting device is operating abnormally. (6) As can be seen from the above disclosure, the constant illuminance lighting control device and lighting device are designed simply, so that the desired effect can be achieved without significantly increasing costs. Therefore, both the constant illuminance lighting control device and lighting device are highly practical and can adapt to future development trends. [Brief explanation of the drawings]

[0017] [Figure 1] 1 is a block diagram of a constant illuminance lighting control device according to a first embodiment of the present invention. [Figure 2] 1 is a block diagram of a lighting device according to a first embodiment of the present invention. [Figure 3] 1 is an explanatory diagram of a lighting device according to a first embodiment of the present invention. [Figure 4] FIG. 4 is a block diagram of a lighting device according to a second embodiment of the present invention. [Figure 5] FIG. 10 is a block diagram of a lighting device according to a third embodiment of the present invention. [Figure 6] 10 is a flowchart of a constant illuminance lighting control method according to a fourth embodiment of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0018] In the following embodiments, detailed features and advantages of the present invention are described, the contents of which are sufficient to enable those skilled in the art to understand the technical contents of the present invention and implement them accordingly, and the disclosure contents, claims and drawings of this specification allow those skilled in the art to easily understand the objectives and advantages of the present invention.

[0019] Hereinafter, embodiments of a constant illuminance lighting control device and a method thereof of the present invention will be described with reference to the associated drawings. However, for clarity and ease of description in the drawings, the dimensions and proportions of each component in the drawings may be exaggerated or reduced. In the following description and / or claims, when a component is described as being "connected" or "coupled" to another component, this may be directly connected or coupled to the other component, or an intervening component may be present. When a component is described as being "directly connected" or "directly coupled" to another component, this does not mean that an intervening component is present, and other terms describing the relationship between components or layers should be interpreted similarly. For ease of understanding, the same components in the following embodiments will be denoted and described with the same reference numerals.

[0020] Please refer to Figures 1, 2, and 3. Figure 1 is a block diagram of a constant illuminance lighting control device according to a first embodiment of the present invention. Figures 2 and 3 are block diagrams and explanatory diagrams of a lighting device according to the first embodiment of the present invention. As shown in these figures, the constant illuminance lighting control device 1 includes a light detection module 12, a processing module 11, and a first communication module 13.

[0021] The light detection module 12 is connected to the processing module 11. In one embodiment, the light detection module 12 may be an illuminance detector (including a photosensitive element), an illuminance meter, or various other devices with illuminance detection capabilities. In another embodiment, the processing module 11 may be a microcontroller (MCU), a central processing unit (CPU), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA), or other similar element.

[0022] The first communication module 13 is connected to the processing module 11. In one embodiment, the first communication module 13 may be a Bluetooth module, a WiFI module, a ZigBee module, a 4G communication module, a 5G communication module, or other similar components.

[0023] The lighting device 2 includes an illuminance detection module 22, a control module 21, a second communication module 23, and a light source 24. In this embodiment, the lighting device 2 may be a lighting fixture that can be placed on a ceiling panel CL (or a wall of a building or other suitable location) to provide illumination to a target area. The illumination detection module 22 can be placed on one side of the lighting device 2 or in another suitable location.

[0024] The illuminance detection module 22 is connected to the control module 21. In one embodiment, the illuminance detection module 22 may be an illuminance detector (including a photosensitive element), an illuminance meter, or various other devices with illuminance detection capabilities. In another embodiment, the control module 21 may be a microcontroller (MCU), a central processing unit (CPU), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA), or other similar element.

[0025] The second communication module 23 is connected to the control module 21. In one embodiment, the second communication module 23 may be a Bluetooth module, a WiFI module, a ZigBee module, a 4G communication module, a 5G communication module, or other similar components.

[0026] The light source 24 is connected to the control module 21. In one embodiment, the light source 24 may be a light emitting diode (LED), a light emitting diode array, a light bulb, a fluorescent lamp, or other similar component.

[0027] The constant illuminance lighting control device 1 can implement a dimming signal tracking mechanism. First, the light detection module 12 detects the illuminance of the target area. The processing module 11 includes a signal register 111. Next, the processing module 11 stores a dimming signal corresponding to the illuminance of the target area in the signal register 111 and uses the stored signal as the original value of the dimming signal. Next, the processing module 11 executes a dimming signal tracking program to compare the illuminance of the target area with the target illuminance to generate an illuminance difference signal and calculate an illumination correction step length according to the illuminance difference signal. Next, the processing module 11 generates a real-time dimming signal based on the illumination correction step length and transmits the real-time dimming signal via the first communication module 13. The control module 21 of the lighting device 2 can receive the real-time dimming signal via the second communication module 23 and control the control module 21 of the lighting device 2 to dim the light source 24 according to the real-time dimming signal.

[0028] The processing module 11 stores the real-time dimming signal in the signal register 11, replacing the original value of the dimming signal. The processing module 11 can repeatedly execute this dimming signal tracking program until the illuminance of the target area is substantially equal to the target illuminance. As described above, the processing module 11 can calculate the illumination correction step length according to the illumination difference signal. If the illumination difference signal is greater than the first threshold, the illumination correction step length is the first step length. If the illumination difference signal is less than the first threshold but greater than the second threshold, the illumination correction step length is the second step length. If the illumination difference signal is less than the second threshold but greater than the third threshold, the illumination correction step length is the third step length. If the illuminance difference signal is less than the difference value between the third threshold and the illuminance of the target area, the illumination correction step length is the fourth step length. The first step length is greater than the second step length. The second step length is greater than the third step length. The third step length is greater than the fourth step length. In one embodiment, the first step length is 1.1 to 1.6 times the second step length, the second step length is 1.2 to 2 times the third step length, and the third step length is 2.5 to 6.5 times the fourth step length. In another embodiment, the first step length is 1.2 to 1.5 times the second step length, the second step length is 1.5 to 1.8 times the third step length, and the third step length is 3 to 5 times the fourth step length.

[0029] For example, if the target illuminance LUX2 is greater than the illuminance LUX1 of the target area, the processing module 11 can generate a real-time dimming signal to increase the brightness of the lighting device 2. In this embodiment, the first threshold may be 130% of the illuminance LUX1 of the target area. The first step length is 10 units, where 1 unit is 1 / 1000 of the maximum brightness of the light source 24 (this is just an example and can be adjusted according to actual circumstances). If the illuminance difference signal is greater than 130% of the illuminance LUX1 of the target area (the first threshold), the illumination correction step length calculated by the processing module 11 is 10 units. Therefore, the processing module 11 generates a real-time dimming signal corresponding to 10 units and transmits the real-time dimming signal via the first communication module 13. The control module 21 of the lighting device 2 receives the real-time dimming signal via the second communication module 23 to dim the light source 24 and store the real-time dimming signal in the signal register 11, replacing the original value of the dimming signal. Next, the processing module 11 executes the dimming signal tracking program again to compare the illuminance LUX1 of the target area with the target illuminance LUX2, generate an illuminance difference signal (the illuminance LUX1 of the target area has increased through the previous dimming signal tracking program and is now closer to the target illuminance LUX2), and calculate an illumination correction step length based on the illuminance difference signal. The processing module 11 then generates a real-time dimming signal corresponding to 10 units based on the illumination correction step length and transmits the real-time dimming signal via the first communication module 13. The control module 21 of the lighting device 2 receives the real-time dimming signal via the second communication module 23 and dims the light source 24. The real-time dimming signal can be stored in the signal register 11, replacing the original value of the dimming signal. The processing module 11 then continues to repeatedly execute the dimming signal tracking program.

[0030] In this embodiment, the second threshold may be 120% of the illuminance LUX1 of the target area. The second step length is 8 units (this is an example and can be adjusted according to actual circumstances). If the illuminance difference signal is smaller than 130% (the first threshold) of the illuminance LUX1 of the target area but larger than 120% (the second threshold) of the illuminance LUX1 of the target area, the illumination correction step length calculated by the processing module 11 is 8 units. Therefore, the processing module 11 generates a real-time dimming signal corresponding to 8 units and transmits the real-time dimming signal via the first communication module 13. The control module 21 of the lighting device 2 receives the real-time dimming signal via the second communication module 23 and dims the light source 24. The real-time dimming signal can be stored in the signal register 11, replacing the original value of the dimming signal. Thereafter, the processing module 11 continues to repeatedly execute the dimming signal tracking program.

[0031] In this embodiment, the third threshold may be 110% of the illuminance LUX1 of the target area. The second step length is 5 units (this is an example and can be adjusted according to actual circumstances). If the illuminance difference signal is smaller than 120% (the second threshold) of the illuminance LUX1 of the target area but larger than 110% (the third threshold) of the illuminance LUX1 of the target area, the illumination correction step length calculated by the processing module 11 is 5 units. Therefore, the processing module 11 generates a real-time dimming signal corresponding to 5 units and transmits the real-time dimming signal via the first communication module 13. The control module 21 of the lighting device 2 receives the real-time dimming signal via the second communication module 23 and dims the light source 24. The real-time dimming signal can be stored in the signal register 11, replacing the original value of the dimming signal. Thereafter, the processing module 11 continues to repeatedly execute the dimming signal tracking program.

[0032] In this embodiment, the fourth step length is 1 unit (this is an example and can be adjusted according to actual circumstances). If the illuminance difference signal is smaller than the difference between 110% (the third threshold) of the illuminance LUX1 of the target area and the illuminance of the target area, the illumination correction step length calculated by the processing module 11 is 1 unit. Therefore, the processing module 11 generates a corresponding real-time dimming signal of 1 unit and transmits the real-time dimming signal via the first communication module 13. The control module 21 of the lighting device 2 receives the real-time dimming signal via the second communication module 23 and dims the light source 24. The real-time dimming signal can be stored in the signal register 11 to replace the original value of the dimming signal. Next, the processing module 11 repeatedly executes the dimming signal tracking program again after a preset time interval (the preset time interval may be several seconds, such as 3 seconds or 5 seconds, and can be adjusted according to actual needs). The preset time interval design allows the light detection module 12 to more stably detect the illuminance LUX1 of the target area.

[0033] When the illuminance difference signal is substantially equal to 0, the illuminance LUX1 of the target area is substantially equal to the target illuminance. At this time, the processing module 11 stops executing the dimming signal tracking program. The user can then remove the constant illuminance lighting control device 1. After the communication connection between the constant illuminance lighting control device 1 and the lighting device 2 is disconnected, the lighting device 2 executes an automatic adjustment mode and reduces the illuminance difference value between the illuminance of the target area and the target illuminance to a value less than the preset difference value. The illuminance detection module 22 of the lighting device 2 can detect the illuminance of the target area, and the control module 21 can calculate the absolute value of the illuminance difference value between the illuminance of the target area and the target illuminance. If the absolute value is greater than the preset difference value, the control module 21 dims the light source 24 (increases or decreases the brightness of the light source 24) to keep the absolute value less than the preset difference value.

[0034] As can be seen from the above, the constant illuminance lighting controller 1 can execute a special dimming signal tracking program, which allows the real-time dimming signal to track the dimming signal corresponding to the target illuminance with an extremely small step length, thereby realizing stepless dimming. Therefore, the constant illuminance lighting controller 1 can achieve high efficiency and meet the requirements of practical applications.

[0035] The constant illuminance lighting control device 1 also includes a multi-step step length adjustment mechanism. When the illuminance difference signal is greater than the first threshold, the illuminance correction step length is the first step length. When the illuminance difference signal is smaller than the first threshold but greater than the first threshold, the illuminance correction step length is the second step length. When the illuminance difference signal is smaller than the second threshold but greater than the third threshold, the illuminance correction step length is the third step length. When the illuminance difference signal is smaller than the difference between the third threshold and the target illuminance, the illuminance correction step length is the fourth step length. Furthermore, the first step length is greater than the second step length. The second step length is greater than the third step length. The third step length is greater than the fourth step length. Therefore, the constant illuminance lighting control device 1 can achieve precise stepless dimming and smooth changes in the brightness of the lighting device 2. Therefore, the constant illuminance lighting control device 1 can effectively improve the lighting effect of the lighting device 2.

[0036] The lighting device 2 can also operate in an automatic adjustment mode. When the lighting device 2 operates in the automatic adjustment mode, the brightness of the lighting device 2 can be appropriately changed to maintain the illuminance difference between the illuminance of the target area and the target illuminance smaller than the preset difference value. This allows the illuminance of the target area to be maintained at a constant illuminance for a long period of time, thereby satisfying the user's needs.

[0037] Of course, this embodiment is only used for illustrative purposes and does not limit the scope of the present invention, and any equivalent modifications or variations made based on the constant illuminance lighting control device and lighting device of this embodiment should still fall within the scope of protection of the present invention.

[0038] 4 is a block diagram of a lighting device according to a second embodiment of the present invention. As shown in the figure, the lighting device 2 includes an illuminance detection module 22, a control module 21, a second communication module 23, and a light source 24.

[0039] The above components are similar to those in the previous embodiment, and therefore will not be described in detail here. Unlike the previous embodiment, in this embodiment, the lighting device 2 further includes a time control module 25. In one embodiment, the time control module may be a timer, an electronic clock circuit, or other similar components. The control module 21 can actively adjust the brightness of the lighting device 2 in a preset change mode according to the settings of the time control module 25. Thus, the brightness of the lighting device 2 can change according to the ambient brightness, and the illuminance of the target area can be kept constant. In another embodiment, the control module 21 can actively adjust the brightness of the lighting device 2 in a preset change mode according to the settings of the time control module 25, and the illuminance of the target area can have a specific change mode. In this way, the lighting device 2 can meet the requirements of various different applications.

[0040] Of course, this embodiment is only used for illustrative purposes and does not limit the scope of the present invention, and any equivalent modifications or variations made based on the lighting device of this embodiment should still fall within the scope of protection of the present invention.

[0041] 5 is a block diagram of a lighting device according to a third embodiment of the present invention. As shown in the figure, the lighting device 2 includes an illuminance detection module 22, a control module 21, a second communication module 23, a light source 24, and a time control module 25.

[0042] The above components are similar to those in the previous embodiment, and therefore will not be described in detail here. Unlike the previous embodiment, in this embodiment, the lighting device 2 further includes a power supply monitoring module 26 and a display module 27. The power supply monitoring module 26 and the display module 27 are connected to the control module 21. In one embodiment, the power supply monitoring module 26 may include a voltage detection circuit, a current detection circuit, or other similar components. In one embodiment, the display module 27 may be an LCD display, a touch screen, or other similar components. The control module 21 can obtain operating status information (such as current and voltage) of the lighting device 2 through the power supply monitoring module 26 and display the operating status information through the display module 27. This allows the user to directly obtain the power consumption and other necessary information of the lighting device 2 and take necessary measures in a timely manner when the lighting device 2 is operating abnormally.

[0043] Of course, this embodiment is only used for illustrative purposes and does not limit the scope of the present invention, and any equivalent modifications or variations made based on the lighting device of this embodiment should still fall within the scope of protection of the present invention.

[0044] In addition, conventional constant-intensity lighting solutions mainly use sensors attached to lighting devices to control dimming. However, due to environmental and other factors, constant-intensity lighting solutions still cannot stably and effectively maintain a constant illuminance in a target area, and therefore cannot meet the needs of practical applications. In contrast, according to the disclosure of the above embodiment of the present invention, a constant-intensity lighting control device includes a light detection module and a processing module. The light detection module detects the illuminance of the target area, which is provided by the lighting device. The processing module includes a signal register, and stores a dimming signal corresponding to the illuminance of the target area in the signal register, which serves as the original value of the dimming signal. The processing module executes a dimming signal tracking program to compare the illuminance of the target area with the target illuminance to generate an illuminance difference signal, calculates an illumination correction step length based on the illuminance difference signal to reduce the illumination correction step length, generates a real-time dimming signal based on the illumination correction step length, and sends the real-time dimming signal to the lighting device to perform dimming. The processing module stores the real-time dimming signal in a signal register, replacing the original value of the dimming signal, and repeatedly executes the dimming signal tracking program until the illuminance of the target area is substantially equal to the target illuminance. As can be seen from the above, the constant illuminance lighting controller can execute a special dimming signal tracking program, which allows the real-time dimming signal to track the dimming signal corresponding to the target illuminance with an extremely small step length, thereby achieving stepless dimming. Therefore, the constant illuminance lighting controller can achieve high efficiency and meet the requirements of practical applications.

[0045] According to the disclosure of the above embodiment of the present invention, the constant illuminance lighting control device includes a multi-step step length adjustment mechanism. When the illuminance difference signal is greater than a first threshold, the illuminance correction step length is a first step length. When the illuminance difference signal is smaller than the first threshold but greater than the first threshold, the illuminance correction step length is a second step length. When the illuminance difference signal is smaller than the second threshold but greater than a third threshold, the illuminance correction step length is a third step length. When the illuminance difference signal is smaller than the difference between the third threshold and the target illuminance, the illuminance correction step length is a fourth step length. Furthermore, the first step length is greater than the second step length. The second step length is greater than the third step length. The third step length is greater than the fourth step length. Therefore, the constant illuminance lighting control device can achieve precise stepless dimming and smooth changes in the brightness of the lighting device. Therefore, the constant illuminance lighting control device can effectively improve the lighting effect of the lighting device.

[0046] Furthermore, according to the disclosure of the above embodiment of the present invention, the lighting device can further execute an automatic adjustment mode. When the lighting device executes the automatic adjustment mode, the brightness of the lighting device can be appropriately changed to continuously maintain the illuminance difference value between the illuminance of the target area and the target illuminance smaller than the preset difference value. Therefore, the illuminance of the target area can be maintained at a constant illuminance state for a long period of time to meet the user's needs.

[0047] Furthermore, according to the disclosure of the above embodiment of the present invention, the lighting device further includes a time control module, and the control module of the lighting device can actively adjust the brightness of the lighting device in a preset change mode based on the setting of the time control module. Therefore, the brightness of the lighting device can change according to the brightness of the environment, and the illuminance of the target area can be kept constant or can have a specific change mode. In this way, the lighting device can meet the requirements of various different applications.

[0048] Furthermore, according to the disclosure of the above-described embodiments of the present invention, the lighting device may further include a power monitoring module and a display module. Therefore, the control module of the lighting device can obtain operating status information (current, voltage, etc.) of the lighting device through the power monitoring module and display the operating status information through the display module. Therefore, the user can directly obtain the amount of power consumption of the lighting device and other necessary information, and can take necessary measures in a timely manner when the lighting device is operating abnormally.

[0049] Furthermore, according to the disclosure of the above embodiments of the present invention, the design of the constant illuminance lighting control device and lighting device is simple, so that the desired effect can be achieved without significantly increasing costs. Therefore, both the constant illuminance lighting control device and lighting device can achieve extremely high practicality and can adapt to future development trends. From the above, it can be seen that the embodiments of the present invention, the constant illuminance lighting control device, can indeed achieve excellent technical effects.

[0050] 6 is a flowchart of a constant illuminance lighting control method according to a fourth embodiment of the present invention. As shown in the figure, the constant illuminance lighting control method according to this embodiment can include the following steps. Step S61: Detect the illuminance of the target area by the light detection module, and the illuminance of the target area is provided by the lighting device. Step S62: The processing module stores the dimming signal corresponding to the illuminance of the target area in a signal register of the processing module, which is the original value of the dimming signal. Step S63: The processing module executes a dimming signal tracking program to compare the illuminance of the target area with the target illuminance, and generates an illuminance difference signal. Step S64: The processing module calculates an illumination correction step length based on the illumination difference signal to reduce the illumination correction step length, generates a real-time dimming signal based on the illumination correction step length, and sends the real-time dimming signal to the lighting device to perform dimming. Step S65: The processing module stores the real-time dimming signal in the signal register, replacing the original value of the dimming signal, and the dimming signal tracking program repeatedly runs until the illuminance of the target area is substantially equal to the target illuminance. Step S66: When the illumination of the target area is substantially equal to the target illumination by the lighting device, an automatic adjustment mode is executed to maintain the illumination difference between the illumination of the target area and the target illumination less than a preset difference value.

[0051] Of course, this embodiment is only used for illustrative purposes and does not limit the scope of the present invention, and any equivalent modifications or variations made based on the constant illuminance lighting control method of this embodiment should still fall within the scope of protection of the present invention.

[0052] Although the steps of the methods described herein are shown and described in a particular order, the order of operations in each method may be changed, some steps may be performed in reverse order or simultaneously with other steps, and in other embodiments, different steps may be performed intermittently and / or alternately.

[0053] In summary, according to the disclosure of the above embodiment of the present invention, a constant illuminance lighting control device includes a light detection module and a processing module. The light detection module detects the illuminance of a target area, which is provided by a lighting device. The processing module includes a signal register and stores a dimming signal corresponding to the illuminance of the target area in the signal register, which serves as the original value of the dimming signal. The processing module executes a dimming signal tracking program to compare the illuminance of the target area with a target illuminance to generate an illuminance difference signal, calculate an illumination correction step length based on the illuminance difference signal to reduce the illumination correction step length, generate a real-time dimming signal based on the illumination correction step length, and send the real-time dimming signal to the lighting device to perform dimming. The processing module stores the real-time dimming signal in the signal register, replacing the original value of the dimming signal, and repeatedly executes the dimming signal tracking program until the illuminance of the target area is substantially equal to the target illuminance. As can be seen from the above, the constant illuminance lighting control device can execute a special dimming signal tracking program, which allows the real-time dimming signal to track the dimming signal corresponding to the target illuminance with an extremely small step length, thereby achieving stepless dimming. Therefore, the constant illuminance lighting control device can achieve high efficiency and meet the requirements of practical applications.

[0054] According to the disclosure of the above embodiment of the present invention, the constant illuminance lighting control device includes a multi-step step length adjustment mechanism. When the illuminance difference signal is greater than a first threshold, the illuminance correction step length is a first step length. When the illuminance difference signal is smaller than the first threshold but greater than the first threshold, the illuminance correction step length is a second step length. When the illuminance difference signal is smaller than the second threshold but greater than a third threshold, the illuminance correction step length is a third step length. When the illuminance difference signal is smaller than the difference between the third threshold and the target illuminance, the illuminance correction step length is a fourth step length. Furthermore, the first step length is greater than the second step length. The second step length is greater than the third step length. The third step length is greater than the fourth step length. Therefore, the constant illuminance lighting control device can achieve precise stepless dimming and smooth changes in the brightness of the lighting device. Therefore, the constant illuminance lighting control device can effectively improve the lighting effect of the lighting device.

[0055] Furthermore, according to the disclosure of the above embodiment of the present invention, the lighting device can further execute an automatic adjustment mode. When the lighting device executes the automatic adjustment mode, the brightness of the lighting device can be appropriately changed to continuously maintain the illuminance difference value between the illuminance of the target area and the target illuminance smaller than the preset difference value. Therefore, the illuminance of the target area can be maintained at a constant illuminance state for a long period of time to meet the user's needs.

[0056] Furthermore, according to the disclosure of the above embodiment of the present invention, the lighting device further includes a time control module, and the control module of the lighting device can actively adjust the brightness of the lighting device in a preset change mode based on the setting of the time control module. Therefore, the brightness of the lighting device can change according to the brightness of the environment, and the illuminance of the target area can be kept constant or can have a specific change mode. In this way, the lighting device can meet the requirements of various different applications.

[0057] Furthermore, according to the disclosure of the above-described embodiments of the present invention, the lighting device may further include a power monitoring module and a display module. Therefore, the control module of the lighting device can obtain operating status information (current, voltage, etc.) of the lighting device through the power monitoring module and display the operating status information through the display module. Therefore, the user can directly obtain the amount of power consumption of the lighting device and other necessary information, and can take necessary measures in a timely manner when the lighting device is operating abnormally.

[0058] Furthermore, the disclosed embodiments of the present invention allow for the simple design of the constant illuminance lighting control device and lighting device, thereby achieving the desired effect without significantly increasing costs. Therefore, both the constant illuminance lighting control device and lighting device are highly practical and can adapt to future development trends.

[0059] Although the above embodiments are described in this specification, it should be noted that they do not limit the scope of the claims of the present invention. Therefore, any changes and modifications to the embodiments described in this specification based on the innovative concept of the present invention, or the replacement of equivalent structures or equivalent processes made using the contents of the specification and drawings of the present invention, or the direct or indirect application of the above technical solutions to other related technical fields, are all within the scope of the claims of the present invention. [Explanation of symbols]

[0060] 1. Constant illuminance lighting control device 11 Processing Module 111 Signal Register 12 Photodetection module 13 First communication module 2. Lighting equipment 21 Control Module 22 Illuminance detection module 23 Second communication module 24 Light source 25 Time Control Module 26 Power Monitoring Module 27 Display Module S61 process S62 process S63 process S64 process S65 process S66 process CL ceiling board

Claims

1. a light detection module for detecting an illumination intensity of a target area, the illumination intensity of the target area being provided by an illumination device; a processing module including a signal register, the processing module storing a dimming signal corresponding to the illuminance of the target area in the signal register as an original value of the dimming signal; Including, the processing module executes a dimming signal tracking program to compare the illuminance of the target area with a target illuminance to generate an illuminance difference signal, calculates an illumination correction step length based on the illuminance difference signal to reduce the illumination correction step length, generates a real-time dimming signal based on the illumination correction step length, and sends the real-time dimming signal to the lighting device to perform dimming; the processing module stores the real-time dimming signal in the signal register, replacing an original value of the dimming signal, and repeatedly executes the dimming signal tracking program until the illuminance of the target area becomes substantially equal to the target illuminance.

2. 2. The constant illuminance lighting control device of claim 1, wherein when the illuminance difference signal is greater than a first threshold, the illuminance correction step length is a first step length; when the illuminance difference signal is less than the first threshold but greater than a second threshold, the illuminance correction step length is a second step length; when the illuminance difference signal is less than the second threshold but greater than a third threshold, the illuminance correction step length is a third step length; and when the illuminance difference signal is less than the difference value between the third threshold and the illuminance of the target area, the illuminance correction step length is a fourth step length.

3. 3. The constant illuminance lighting control device according to claim 2, wherein the first step length is greater than the second step length, the second step length is greater than the third step length, and the third step length is greater than the fourth step length.

4. 3. The constant illuminance lighting control device of claim 2, wherein the first step length is 1.1 to 1.6 times the second step length, the second step length is 1.2 to 2 times the third step length, and the third step length is 2.5 to 6.5 times the fourth step length.

5. 2. The constant illuminance lighting control device of claim 1, wherein when the illuminance of the target area is substantially equal to the target illuminance, the lighting device executes an automatic adjustment mode and maintains an illuminance difference value between the illuminance of the target area and the target illuminance less than a preset difference value.

6. detecting illumination of a target area by a light detection module, the illumination of the target area being provided by an illumination device; a processing module for storing a dimming signal corresponding to the illuminance of the target area in a signal register of the processing module, the dimming signal being set as an original value; executing a dimming signal tracking program by the processing module to compare the illuminance of the target area with a target illuminance and generate an illuminance difference signal; the processing module calculates an illumination correction step length based on the illumination difference signal to reduce the illumination correction step length, generates a real-time dimming signal based on the illumination correction step length, and transmits the real-time dimming signal to the lighting device to perform dimming; storing the real-time dimming signal in the signal register by the processing module, replacing the original value of the dimming signal, and repeatedly executing a dimming signal tracking program until the illuminance of the target area is substantially equal to the target illuminance; A constant illuminance lighting control method comprising:

7. 7. The method of claim 6, wherein when the illuminance difference signal is greater than a first threshold, the illuminance correction step length is a first step length; when the illuminance difference signal is less than the first threshold but greater than the first threshold, the illuminance correction step length is a second step length; when the illuminance difference signal is less than the second threshold but greater than a third threshold, the illuminance correction step length is a third step length; and when the illuminance difference signal is less than a difference value between the third threshold and the target illuminance, the illuminance correction step length is a fourth step length.

8. 8. The constant illuminance lighting control method of claim 7, wherein the first step length is greater than the second step length, the second step length is greater than the third step length, and the third step length is greater than the fourth step length.

9. 8. The constant illuminance lighting control method of claim 7, wherein the first step length is 1.1 to 1.6 times the second step length, the second step length is 1.2 to 2 times the third step length, and the third step length is 2.5 to 6.5 times the fourth step length.

10. 7. The method for controlling constant illuminance lighting according to claim 6, further comprising the step of: when the illuminance of the target area is substantially equal to the target illuminance, executing an automatic adjustment mode by the lighting device to maintain an illuminance difference value between the illuminance of the target area and the target illuminance less than a preset difference value.

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