Illumination control method for tobacco inspection environment

Abstract

The invention discloses an illumination control method for a tobacco inspection environment. The method is executed by a lighting control system for the tobacco inspection environment, and the system comprises a sensor module, a PLC control module, a power line carrier communication module, a double-color-temperature driving module and a lamp. The method comprises the steps that the sensor module collects optical signals of all areas of the tobacco sorting factory in the current environment and transmits the optical signals to the PLC control module; the PLC control module determines a current lighting parameter according to the light signal, compares the current lighting parameter with a preset parameter and generates a control command; the power line carrier communication module transmits the control command to the double-color-temperature driving module; and the double-color-temperature driving module adjusts the output duty ratio of the lamp according to the control command, so that the current illumination parameter reaches a preset parameter. According to the technical scheme provided by the embodiment of the invention, the strict requirements on color temperature, color rendering, anti-interference capability and intelligent linkage of tobacco leaf grading laboratory environment conditions can be met.

Description

Technical Field

[0001] This invention relates to the field of lighting control technology, and in particular to a lighting control method for a tobacco testing environment. Background Technology

[0002] The core requirements for lighting systems in tobacco testing environments focus on color temperature accuracy, color rendering index (CRI), illuminance uniformity, and environmental adaptability. According to the "Environmental Conditions for Tobacco Leaf Grading Laboratories," laboratories must use neutral white light with a color temperature of 5300K-5800K and a CRI of no less than 90 to ensure accurate color reproduction of tobacco leaves.

[0003] Existing lighting control solutions cannot meet the stringent requirements of the "Environmental Conditions for Tobacco Grading Laboratory" regarding color temperature, color rendering index, anti-interference capability, and intelligent linkage. Summary of the Invention

[0004] This invention provides a lighting control method for tobacco testing environments to meet the stringent requirements of the "Environmental Conditions for Tobacco Grading Laboratories" regarding color temperature, color rendering, anti-interference ability, and intelligent linkage.

[0005] According to one aspect of the present invention, a lighting control method for a tobacco inspection environment is provided, executed by a lighting control system for a tobacco inspection environment, the system comprising a sensor module, a PLC control module, a power line carrier communication module, a dual color temperature drive module, and a luminaire; the method comprising:

[0006] The sensor module collects light signals from various areas of the tobacco sorting plant under the current environment and transmits the light signals to the PLC control module.

[0007] The PLC control module determines the current lighting parameters based on the light signal, compares the current lighting parameters with preset parameters, and generates control commands.

[0008] The power line carrier communication module transmits the control commands to the dual color temperature drive module;

[0009] The dual-color temperature drive module adjusts the output duty cycle of the lamp according to the control command so that the current lighting parameters reach the preset parameters.

[0010] Optionally, the tobacco sorting plant includes a raw material acceptance area, and the preset parameters include a first preset color temperature range and a first color rendering index threshold.

[0011] The first preset color temperature range of the raw material acceptance area is fixed at 5300K±200K, and the first color rendering index threshold is greater than or equal to 90.

[0012] Optionally, each area of ​​the tobacco sorting plant may also include a tobacco leaf grading table; preset parameters may also include a second preset color temperature range and a first preset constant illuminance;

[0013] The second preset color temperature range of the tobacco leaf grading table is 5500K±300K, and the first preset constant illuminance is 2000±200lx.

[0014] Optionally, each area of ​​the tobacco sorting plant may also include a sorting line operation area; preset parameters may also include a third preset color temperature range;

[0015] The third preset color temperature range for the sorting line operation area is 4000K-5000K.

[0016] Optionally, each area of ​​the tobacco sorting plant also includes a quality inspection area; preset parameters also include a fourth preset color temperature range and a second color rendering index threshold.

[0017] The fourth preset color temperature range in the quality inspection area is fixed at 5800K±200K, and the second color rendering index threshold is greater than or equal to 95.

[0018] Optionally, the tobacco sorting plant may also include a packaging area; preset parameters may also include a fifth preset color temperature range;

[0019] The fifth preset color temperature range for the packaging area is 3000K-4000K, with the color temperature being 4000K during the day and 3000K at night.

[0020] Optionally, the tobacco sorting plant may also include a storage area; preset parameters may also include a sixth preset color temperature range;

[0021] The sixth preset color temperature range for the storage area is 4000K-5000K.

[0022] Optionally, each area of ​​the tobacco sorting plant also includes an equipment maintenance area; preset parameters also include a seventh preset color temperature range and a second preset constant illuminance;

[0023] The seventh preset color temperature range in the equipment maintenance area is fixed at 6000K±500K, and the second preset constant illuminance is 1000lx.

[0024] Optionally, each area of ​​the tobacco sorting plant also includes a monitoring room; preset parameters also include an eighth preset color temperature range;

[0025] The eighth preset color temperature range in the monitoring room is fixed at 4500K±500K.

[0026] Optionally, each area of ​​the tobacco sorting plant also includes a rest area; preset parameters also include a ninth preset color temperature range and a third preset constant illuminance;

[0027] The ninth preset color temperature range for the rest area is fixed at 2800K±200K, and the third preset constant illuminance is 50-100lx.

[0028] The technical solution provided by this invention, based on the deep integration of PLC control, power line carrier communication technology and dual-color temperature non-isolated drive, solves key problems in tobacco inspection environmental lighting such as color temperature accuracy, anti-interference ability, wiring cost and intelligent linkage, thereby improving the accuracy of tobacco detection and achieving the beneficial effect of meeting the stringent requirements of the "Environmental Conditions for Tobacco Leaf Grading Laboratory" for color temperature, color rendering, anti-interference ability and intelligent linkage.

[0029] It should be understood that the description in this section is not intended to identify key or essential features of the embodiments of the present invention, nor is it intended to limit the scope of the invention. Other features of the invention will become readily apparent from the following description. Attached Figure Description

[0030] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0031] Figure 1 A flowchart illustrating a lighting control method for a tobacco testing environment, provided as an embodiment of the present invention;

[0032] Figure 2 A schematic diagram of a lighting control system for a tobacco testing environment provided in an embodiment of the present invention;

[0033] Figure 3 This is a schematic diagram of an electronic device for a lighting control method for a tobacco testing environment, provided as an embodiment of the present invention. Detailed Implementation

[0034] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.

[0035] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the invention described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0036] Figure 1 The flowchart illustrates a lighting control method for a tobacco inspection environment provided in this embodiment of the invention. This embodiment is applicable to tobacco inspection to ensure accurate color reproduction of tobacco leaves. The method can be executed by a lighting control system for a tobacco inspection environment. This system can be implemented in hardware and / or software and can be configured in any electronic device with communication capabilities. Figure 2 A schematic diagram of a lighting control system for a tobacco testing environment provided in an embodiment of the present invention is shown below. Figure 2 The system includes a sensor module 210, a PLC control module 220, a power line carrier communication module 230, a dual-color temperature drive module 240, and a lamp 250. (See also...) Figure 1 The method includes:

[0037] S110, the sensor module collects the light signals of the current environment in each area of ​​the tobacco sorting plant and transmits the light signals to the PLC control module.

[0038] The sensor module is not a single, uniform set of sensors, but rather a multi-type system adapted to different areas of the tobacco sorting plant, including ambient light sensors and screen brightness sensors. Each area is equipped with sensors capable of collecting light signals. Instead of a unified data collection system for the entire plant, data is collected separately for each functional area, such as the acceptance area, grading station, and storage area. This is because different areas have different lighting requirements; for example, the acceptance area needs near-natural light, while the quality inspection area requires high-contrast cool light. Therefore, zoned data collection is essential to ensure accurate subsequent adjustments. The Programmable Logic Controller (PLC) control module pre-stores preset parameters for lighting in each area of ​​the tobacco sorting plant. Subsequent adjustments are made by comparing the light signals collected by the sensor modules in each area with these preset parameters.

[0039] Specifically, the sensor module collects real-time light signals from various areas of the tobacco sorting plant. These light signals are not abstract light rays, but specific, quantifiable physical parameters, including: ambient light intensity (e.g., whether the current illuminance at the grading station is 1800 lx or 2200 lx); ambient light color temperature (e.g., whether the daytime color temperature in the packaging area is 3800 K or 4200 K); and specific light parameters for certain areas (e.g., the intensity of reflected light from the monitoring room screens, and the localized light distribution in the storage area due to shelving obstruction). After collecting these quantified light signals, the sensor module transmits them to the PLC control module in real-time and stably through a pre-set communication link, such as a power line carrier communication module, adapted to the strong industrial interference environment of the tobacco sorting plant. This transmission is not a simple signal transfer, but an industrial-grade data upload to ensure that the light signal parameters are not lost or affected by electromagnetic interference. Since the conveyor belts and power lines in the sorting plant may generate electromagnetic interference, the communication method must be adapted to this scenario to ensure that the PLC control module receives accurate light signals.

[0040] The S120 and PLC control modules determine the current lighting parameters based on the light signal, compare the current lighting parameters with preset parameters, and generate control commands.

[0041] The current lighting parameters are the quantitative indicators of the actual lighting in the current area, analyzed by the PLC control module from the light signals collected by the sensor module. These can include the current color temperature, current illuminance, and current color rendering index (CRI) for each area. The preset parameters are standard values / ranges pre-stored by the PLC control module to meet the operational requirements of each area. These can be pre-set according to the lighting requirements of the "Environmental Conditions for Tobacco Grading Laboratory." Preset parameters can include preset color temperature ranges, CRI thresholds, and preset constant illuminance. For example, the preset color temperature range for the raw material acceptance area is fixed at 5300K±200K, and the CRI threshold is greater than or equal to 90; the preset color temperature range for the tobacco grading table is 5500K±300K, and the preset constant illuminance is 2000±200 lx, etc.

[0042] Specifically, the PLC control module analyzes the light signals collected by the sensor module to determine the current lighting parameters for each area of ​​the tobacco sorting plant. The PLC control module retrieves the preset parameters for the current area and compares them with the current lighting parameters to determine if the current lighting parameters meet the preset requirements. The core process involves three scenarios:

[0043] Fully compliant: The current lighting parameters meet the preset parameters. For example, if the current color temperature in the acceptance area is 5400K and the current color rendering index Ra=91, which is in line with the preset color temperature range of 5300K±200K and the color rendering index threshold Ra≥90, then no adjustment is required.

[0044] Partial non-compliance: If one or more current lighting parameters do not meet the preset parameters, for example, the current illuminance of the grading table is 1700 lx, which is lower than the lower limit of the preset constant illuminance of 2000 ± 200 lx; ​​the current color temperature is 5100 K, which is within the preset color temperature range of 5500 K ± 300 K; then only the non-compliant items will be adjusted.

[0045] Completely unacceptable: The current lighting parameters do not meet the preset parameters at all. For example, if the current color temperature of the packaging area at night is 3800K, which is far higher than the preset color temperature of 3000K at night, then the current lighting parameters need to be adjusted.

[0046] The PLC control module generates control commands based on the comparison results. These commands are not vague expressions like "brighten up" or "cool down," but rather precise industrial-grade instructions that directly interface with the subsequent dual-color temperature drive module. The core components include:

[0047] Adjustment goals: Define the parameters to be corrected, such as increasing the current color temperature by 300K, increasing the current illuminance by 100lx, and optimizing the current color rendering index to ≥95.

[0048] Execution method: Clarify the specific operation of the dual color temperature drive module, such as increasing the duty cycle of the cool light LED by 8% and increasing the power of the warm light LED by 15%, because the color temperature is determined by the duty cycle of the cool and warm light, and the illuminance is determined by the power / duty cycle.

[0049] Precision requirements: Clearly define adjustment errors, such as color temperature adjustment error ≤ 50K, illuminance error ≤ 50lx, to meet the high precision needs of the tobacco industry.

[0050] For example, based on the comparison results of the quality inspection area, the PLC control module generates control commands: "Increase the duty cycle of the cold light LED by 8%, increase the power of the lamp by 10%, so that the current color temperature reaches 5800K±200K, the current illuminance is ≥1000lx, and the current color rendering index Ra≥95."

[0051] This step essentially addresses whether the current lighting is suitable for the area's work needs, such as ensuring accurate color reproduction in the acceptance area, stable illuminance on the grading platform, and clear defects in the inspection area. All decisions revolve around the specific work scenario of the tobacco sorting plant, rather than general adjustments to general lighting.

[0052] S130, the power line carrier communication module transmits control commands to the dual color temperature drive module.

[0053] The power line carrier communication module serves as the system's industrial-grade communication bridge, specifically designed to address the complex environmental challenges of tobacco sorting plants, such as strong electromagnetic interference and multiple equipment wiring. It is responsible for transmitting control commands from the PLC control module to the execution end—the dual-color temperature drive module—without distortion and with low latency. This dual-color temperature drive module is the core execution unit connecting the power line carrier communication module and the lighting fixtures. It can interpret control commands and precisely control the cool-light and warm-light LEDs within the lighting fixtures.

[0054] Specifically, the power line carrier communication module transmits the control commands generated by the PLC control module to the dual-color temperature drive module. The power line carrier communication module is used because it can utilize the factory's existing power lines for signal transmission, eliminating the need for additional wiring. It also resists electromagnetic interference from the sorting plant's conveyor belts and power lines, ensuring that control commands are not lost or deviated.

[0055] S140, the dual-color temperature drive module adjusts the output duty cycle of the lamp according to the control command so that the current lighting parameters reach the preset parameters.

[0056] In simple terms, the output duty cycle is the proportion of time the LED light is on. For example, a 60% duty cycle for a cool-light LED means that the cool light is on for 0.6 seconds per second; a 40% duty cycle for a warm-light LED means that the warm light is on for 0.4 seconds per second. Key logic: ① Color temperature is determined by the ratio of cool and warm light duty cycles; that is, a higher proportion of cool light results in a cooler color temperature, and a higher proportion of warm light results in a warmer color temperature. ② Illuminance is determined by the total duty cycle; that is, the higher the total duty cycle of cool and warm light, the brighter the light fixture.

[0057] Specifically, after receiving a control command, the dual-color temperature drive module analyzes and interprets the command, and adjusts the working time ratio of the cool-light LEDs and warm-light LEDs in the lamp according to the command, thereby correcting the current lighting parameters.

[0058] For example, by analyzing and interpreting the control commands, it is found that the duty cycle of cold light is 75%, the duty cycle of warm light is 20%, and the total duty cycle is 95%. After the dual color temperature drive module is executed, the proportion of cold light is high, so the color temperature is biased towards 5800K, which meets the high contrast cold light requirements of the quality inspection area. At the same time, the color rendering index Ra≥95 ensures that mold and insect defects are clearly visible.

[0059] The technical solution provided by this invention, based on the deep integration of PLC control, power line carrier communication technology and dual-color temperature non-isolated drive, solves key problems in tobacco inspection environmental lighting such as color temperature accuracy, anti-interference ability, wiring cost and intelligent linkage, thereby improving the accuracy of tobacco detection and achieving the beneficial effect of meeting the stringent requirements of the "Environmental Conditions for Tobacco Leaf Grading Laboratory" for color temperature, color rendering, anti-interference ability and intelligent linkage.

[0060] In some other embodiments, optionally, each area of ​​the tobacco sorting plant includes a raw material acceptance area, and the preset parameters include a first preset color temperature range and a first color rendering index threshold; the first preset color temperature range of the raw material acceptance area is fixed at 5300K±200K, and the first color rendering index threshold is greater than or equal to 90.

[0061] The first preset color temperature range and the first color rendering index threshold can be preset according to the lighting requirements of the raw material acceptance area in the "Environmental Conditions for Tobacco Grading Laboratory". The first preset color temperature range of the raw material acceptance area is fixed at 5300K±200K, and the first color rendering index threshold Ra≥90, which can ensure the true color reproduction of tobacco leaves, enabling acceptance personnel to quickly identify the grade, color uniformity and impurities of tobacco leaves.

[0062] In some other embodiments, optionally, each area of ​​the tobacco sorting plant also includes a tobacco leaf grading table; the preset parameters also include a second preset color temperature range and a first preset constant illuminance; the second preset color temperature range of the tobacco leaf grading table is 5500K±300K, and the first preset constant illuminance is 2000±200lx.

[0063] The second preset color temperature range and the first preset constant illuminance can be pre-set according to the lighting requirements of the tobacco grading table in the "Environmental Conditions for Tobacco Grading Laboratory". The second preset color temperature range of the tobacco grading table is 5500K±300K, and the first preset constant illuminance is 2000±200lx, to meet the needs of graders who need to observe subtle characteristics of tobacco leaves for a long time, such as spots and oil distribution, and require stable neutral light.

[0064] In some other embodiments, optionally, each area of ​​the tobacco sorting plant may also include a sorting line operation area; the preset parameters may also include a third preset color temperature range; the third preset color temperature range of the sorting line operation area is 4000K-5000K.

[0065] The third preset color temperature range can be pre-set according to the lighting requirements of the sorting line operating area in the "Environmental Conditions for Tobacco Grading Laboratory". The third preset color temperature range for the sorting line operating area is 4000K-5000K, which can meet the needs of operators who need to pay attention to tobacco sorting and equipment status, such as belt speed and sensor feedback, and require neutral light to improve concentration. Increasing the color temperature to 5000K can improve visual acuity.

[0066] In some other embodiments, optionally, each area of ​​the tobacco sorting plant also includes a quality inspection area; the preset parameters also include a fourth preset color temperature range and a second color rendering index threshold; the fourth preset color temperature range of the quality inspection area is fixed at 5800K±200K, and the second color rendering index threshold is greater than or equal to 95.

[0067] The fourth preset color temperature range and the second color rendering index threshold can be pre-set according to the lighting requirements of the quality inspection area in the "Environmental Conditions for Tobacco Grading Laboratory". Inspectors need to accurately identify tobacco leaf defects, such as mold and insect infestation, which requires high-contrast cool light. The fourth preset color temperature range of the quality inspection area is fixed at 5800K±200K, and the second color rendering index threshold Ra≥95, which can ensure that defect details are clearly visible.

[0068] In some other embodiments, optionally, each area of ​​the tobacco sorting plant also includes a packaging area; the preset parameters also include a fifth preset color temperature range; the fifth preset color temperature range of the packaging area is 3000K-4000K, wherein the color temperature during the day is 4000K and the color temperature at night is 3000K.

[0069] The fifth preset color temperature range can be pre-set according to the lighting requirements of the packaging area in the "Environmental Conditions for Tobacco Grading Laboratory". Packers need to perform delicate operations for long periods of time, such as labeling and sealing boxes, and warm light is needed to reduce visual fatigue. The fifth preset color temperature range for the packaging area is 3000K-4000K, with a color temperature of 4000K during the day and 3000K at night, which can simulate the changes in natural light.

[0070] In some other embodiments, optionally, each area of ​​the tobacco sorting plant may also include a storage area; the preset parameters may also include a sixth preset color temperature range; the sixth preset color temperature range of the storage area is 4000K-5000K.

[0071] The sixth preset color temperature range can be pre-set according to the lighting requirements of the storage area in the "Environmental Conditions for Tobacco Grading Laboratory". Warehouse staff need to quickly inventory and identify tobacco batches, requiring neutral light to improve visibility. The sixth preset color temperature range for the storage area is 4000K-5000K. The system is linked to shelf sensors to automatically adjust the color temperature according to the shelf height, and works in conjunction with intelligent sensor lights to achieve the effect of turning off lights when people leave, thus saving energy and reducing consumption.

[0072] In some other embodiments, optionally, each area of ​​the tobacco sorting plant also includes an equipment maintenance area; the preset parameters also include a seventh preset color temperature range and a second preset constant illuminance; the seventh preset color temperature range of the equipment maintenance area is fixed at 6000K±500K, and the second preset constant illuminance is 1000lx.

[0073] The seventh preset color temperature range and the second preset constant illuminance can be pre-set according to the lighting requirements of the equipment maintenance area in the "Environmental Conditions for Tobacco Grading Laboratory". Maintenance personnel need to accurately identify equipment faults, such as belt wear or sensor malfunctions, requiring high-brightness cool light. The seventh preset color temperature range in the equipment maintenance area is fixed at 6000K±500K, and the second preset constant illuminance is 1000lx, ensuring clear visibility of equipment details.

[0074] Optionally, each area of ​​the tobacco sorting plant also includes a monitoring room; the preset parameters also include an eighth preset color temperature range; the eighth preset color temperature range of the monitoring room is fixed at 4500K±500K.

[0075] The eighth preset color temperature range can be pre-set according to the lighting requirements of the monitoring room in the "Environmental Conditions for Tobacco Grading Laboratory". Monitors need to observe the sorting line's operation for extended periods, such as belt speed and tobacco leaf flow, requiring neutral light to reduce visual fatigue. The eighth preset color temperature range in the monitoring room is fixed at 4500K±500K, matching the screen's color temperature of 6500K, which reduces color difference interference.

[0076] Optionally, each area of ​​the tobacco sorting plant also includes a rest area; the preset parameters also include a ninth preset color temperature range and a third preset constant illuminance; the ninth preset color temperature range of the rest area is fixed at 2800K±200K, and the third preset constant illuminance is 50-100lx.

[0077] The ninth preset color temperature range and the third preset constant illuminance can be pre-set according to the lighting requirements of the rest area in the "Environmental Conditions for Tobacco Grading Laboratory". Employees need to relax during breaks, so very warm light is required to create a cozy atmosphere. The ninth preset color temperature range of the rest area is fixed at 2800K±200K, and the third preset constant illuminance is 50-100lx, which can simulate sunset light.

[0078] The following is a detailed description of a lighting control method for a tobacco inspection environment provided by an embodiment of the present invention, using a tobacco sorting plant as an example:

[0079] The tobacco sorting plant includes a raw material acceptance area, tobacco leaf grading table, sorting line operation area, quality inspection area, packaging area, storage area, equipment maintenance area, monitoring room and rest area.

[0080] 1. Raw material acceptance area (target color temperature range: 5000K-5500K), the system presets "acceptance mode", the first preset color temperature range is fixed at 5300K±200K (close to natural sunlight), the first color rendering index threshold Ra≥90, to ensure the true color reproduction of tobacco leaves, so that the acceptance personnel can quickly identify the grade of tobacco leaves, color uniformity and impurities.

[0081] 2. Tobacco leaf grading table (target color temperature range: 5300K-5800K). The system is linked to the grading table sensor and automatically adjusts the current color temperature to the second preset color temperature range of 5500K±300K according to the ambient light intensity, maintaining the first constant illuminance of 2000±200lx to meet the needs of graders who need to observe the subtle characteristics of tobacco leaves for a long time, such as spots and oil distribution, and require stable neutral light.

[0082] 3. Sorting line operating area (target color temperature range: 4000K-5000K): Operators need to simultaneously monitor tobacco leaf sorting and equipment status, such as belt speed and sensor feedback. Neutral light is required to enhance concentration. Raising the current color temperature of the sorting line operating area to 5000K can improve visual acuity.

[0083] 4. Quality Inspection Area (Target Color Temperature Range: 5500K-6000K): Inspectors must accurately identify tobacco leaf defects such as mold and insect infestation, requiring high-contrast cool light. The fourth preset color temperature range of the quality inspection area is fixed at 5800K±200K, and the second color rendering index threshold Ra≥95, ensuring that defect details are clearly visible.

[0084] 5. Packaging Area (Target Color Temperature Range: 3000K-4000K): Packaging staff need to perform delicate operations for extended periods, such as labeling and sealing boxes. Warm light is required to reduce visual fatigue. The fifth preset color temperature range for the packaging area is 3000K-4000K, with a daytime color temperature of 4000K and a nighttime color temperature of 3000K, which can simulate changes in natural light.

[0085] 6. Warehouse Area (Target Color Temperature Range: 4000K-5000K): Warehouse staff need to quickly inventory and identify tobacco leaf batches, requiring neutral light to improve visibility. The sixth preset color temperature range for the warehouse area is 4000K-5000K. The system is linked to shelf sensors to automatically adjust the color temperature according to shelf height, working in conjunction with intelligent sensor lights to achieve the effect of lights turning off when people leave, saving energy and reducing consumption.

[0086] 7. Equipment Maintenance Area (Target Color Temperature Range: 5000K-6500K): Maintenance personnel need to accurately identify equipment faults, such as belt wear or sensor malfunctions, requiring high-brightness cool light. The system has a preset "Maintenance Mode," with the seventh preset color temperature range for the equipment maintenance area fixed at 6000K±500K, and the second preset constant illuminance at 1000lx, ensuring clear visibility of equipment details.

[0087] 8. Monitoring Room (Target Color Temperature Range: 4000K-5000K): Monitors need to observe the sorting line's operation for extended periods, such as belt speed and tobacco leaf flow. Neutral light is required to reduce visual fatigue. The system is linked to the monitoring screen brightness and automatically adjusts the current color temperature to the eighth preset color temperature range of 4500K±500K, matching the screen's color temperature of 6500K, thus reducing color difference interference.

[0088] 9. Rest Area (Target Color Temperature Range: 2700K-3000K): Employees need to relax during breaks, requiring warm lighting to create a cozy atmosphere. The system has a preset "Rest Mode" that keeps the ninth preset color temperature range at 2800K±200K for a fixed period of time in the rest area, with the third preset constant illuminance at 50-100lx, simulating sunset light.

[0089] The technical solution provided by this invention, through the deep integration of PLC control, power line carrier communication technology and dual-color temperature non-isolated drive, provides a stable, accurate, and energy-saving lighting solution for scenarios such as tobacco grading, foreign object detection, and quality inspection. It solves key problems in tobacco inspection environment lighting such as color temperature accuracy, anti-interference ability, wiring cost, and intelligent linkage, thereby improving the accuracy of tobacco detection and achieving the beneficial effect of meeting the stringent requirements of the "Environmental Conditions for Tobacco Leaf Grading Laboratory" for color temperature, color rendering, anti-interference ability, and intelligent linkage.

[0090] See also Figure 2 This invention provides a lighting control system for a tobacco inspection environment. The system includes a sensor module 210, a PLC control module 220, a power line carrier communication module 230, a dual color temperature drive module 240, and a lamp 250.

[0091] Sensor module 210 is used to collect light signals in the current environment of each area of ​​the tobacco sorting plant and transmit the light signals to PLC control module 220.

[0092] The PLC control module 220 is used to determine the current lighting parameters based on the light signal, compare the current lighting parameters with preset parameters, and generate control commands.

[0093] The power line carrier communication module 230 is used to transmit control commands to the dual color temperature drive module 240.

[0094] The dual-color temperature drive module 240 is used to adjust the output duty cycle of the luminaire 250 according to the control command so that the current lighting parameters reach the preset parameters.

[0095] The lighting control system for a tobacco inspection environment provided in this embodiment of the invention can execute the lighting control method for a tobacco inspection environment provided in any embodiment of the invention, and has the corresponding functional modules and beneficial effects of the execution method, which will not be elaborated here.

[0096] Figure 3 This is a schematic diagram of an electronic device for a lighting control method in a tobacco testing environment, provided as an embodiment of the present invention. The electronic device is intended to represent various forms of digital computers, such as laptop computers, desktop computers, workbenches, personal digital assistants, servers, blade servers, mainframe computers, and other suitable computers. The electronic device can also represent various forms of mobile devices, such as personal digital processors, cellular phones, smartphones, and other similar computing devices. The components shown herein, their connections and relationships, and their functions are merely illustrative and are not intended to limit the implementation of the invention described and / or claimed herein.

[0097] like Figure 3 As shown, the electronic device 10 includes at least one processor 11 and a memory, such as a read-only memory (ROM) 12 and a random access memory (RAM) 13, communicatively connected to the at least one processor 11. The memory stores computer programs executable by the at least one processor. The processor 11 can perform various appropriate actions and processes based on the computer program stored in the ROM 12 or loaded into the RAM 13 from storage unit 18. The RAM 13 can also store various programs and data required for the operation of the electronic device 10. The processor 11, the ROM 12, and the RAM 13 are interconnected via a bus 14. An input / output (I / O) interface 15 is also connected to the bus 14.

[0098] Multiple components in electronic device 10 are connected to input / output I / O interface 15, including: input unit 16, such as keyboard, mouse, etc.; output unit 17, such as various types of monitors, speakers, etc.; storage unit 18, such as disk, optical disk, etc.; and communication unit 19, such as network card, modem, wireless transceiver, etc. Communication unit 19 allows electronic device 10 to exchange information / data with other devices through computer networks such as the Internet and / or various telecommunications networks.

[0099] Processor 11 can be a variety of general-purpose and / or special-purpose processing components with processing and computing capabilities. Some examples of processor 11 include, but are not limited to, a central processing unit (CPU), a graphics processing unit (GPU), various special-purpose artificial intelligence (AI) computing chips, various processors running machine learning model algorithms, a digital signal processor (DSP), and any suitable processor, controller, microcontroller, etc. Processor 11 performs the various methods and processes described above, such as a lighting control method for a tobacco inspection environment.

[0100] In some embodiments, a lighting control method for a tobacco testing environment may be implemented as a computer program tangibly contained in a computer-readable storage medium, such as storage unit 18. In some embodiments, part or all of the computer program may be loaded and / or mounted on electronic device 10 via read-only memory ROM 12 and / or communication unit 19. When the computer program is loaded into random access memory RAM 13 and executed by processor 11, one or more steps of the lighting control method for a tobacco testing environment described above may be performed. Alternatively, in other embodiments, processor 11 may be configured in any other suitable manner to perform a lighting control method for a tobacco testing environment.

[0101] Various embodiments of the systems and techniques described above herein can be implemented in digital electronic circuit systems, integrated circuit systems, field-programmable gate arrays (FPGAs), application-specific integrated circuits (ASICs), application-specific standard products (ASSPs), systems-on-a-chip (SoCs), payload-programmable logic devices (CPLDs), computer hardware, firmware, software, and / or combinations thereof. These various embodiments may include implementations in one or more computer programs that can be executed and / or interpreted on a programmable system including at least one programmable processor, which may be a dedicated or general-purpose programmable processor, capable of receiving data and instructions from a storage system, at least one input device, and at least one output device, and transferring data and instructions to the storage system, the at least one input device, and the at least one output device.

[0102] Computer programs used to implement the methods of the present invention may be written in any combination of one or more programming languages. These computer programs may be provided to a processor of a general-purpose computer, a special-purpose computer, or other programmable data processing device, such that when executed by the processor, the computer programs cause the functions / operations specified in the flowcharts and / or block diagrams to be performed. The computer programs may be executed entirely on a machine, partially on a machine, or as a standalone software package, partially on a machine and partially on a remote machine, or entirely on a remote machine or server.

[0103] In the context of this invention, a computer-readable storage medium can be a tangible medium that may contain or store a computer program for use by or in conjunction with an instruction execution system, apparatus, or device. A computer-readable storage medium may include, but is not limited to, electronic, magnetic, optical, electromagnetic, infrared semiconductor systems, apparatus, or devices, or any suitable combination of the foregoing. Alternatively, a computer-readable storage medium may be a machine-readable signal medium. More specific examples of machine-readable storage media include electrical connections based on one or more wires, portable computer disks, hard disks, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), optical fibers, portable compact disk read-only memory (CD-ROM), optical storage devices, magnetic storage devices, or any suitable combination of the foregoing.

[0104] To provide interaction with a user, the systems and techniques described herein can be implemented on an electronic device having: a display device for displaying information to a user; and a keyboard and pointing device through which the user provides input to the electronic device. Other types of devices can also be used to provide interaction with a user; for example, feedback provided to the user can be any form of sensory feedback; and input from the user can be received in any form.

[0105] The systems and technologies described herein can be implemented in computing systems that include backend components, middleware components, or frontend components (e.g., a user computer with a graphical user interface or web browser through which a user can interact with implementations of the systems and technologies described herein), or any combination of such backend, middleware, or frontend components. The components of the system can be interconnected via digital data communication of any form or medium. Examples of communication networks include local area networks (LANs), wide area networks (WANs), blockchain networks, and the Internet.

[0106] A computing system can include clients and servers. Clients and servers are generally located far apart and typically interact through communication networks. The client-server relationship is created by computer programs running on the respective computers and having a client-server relationship with each other. The server can be a cloud server, also known as a cloud computing server or cloud host, which is a hosting product within the cloud computing service system to address the shortcomings of traditional physical hosts and VPS services, such as high management difficulty and weak business scalability.

[0107] It should be understood that the various forms of processes shown above can be used, with steps reordered, added, or deleted. For example, the steps described in this invention can be executed in parallel, sequentially, or in different orders, as long as the desired result of the technical solution of this invention can be achieved, and this is not limited herein.

[0108] The specific embodiments described above do not constitute a limitation on the scope of protection of this invention. Those skilled in the art should understand that various modifications, combinations, sub-combinations, and substitutions can be made according to design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this invention should be included within the scope of protection of this invention.

Claims

1. A lighting control method for a tobacco testing environment, characterized in that, The method is executed by a lighting control system for a tobacco inspection environment, the system comprising a sensor module, a PLC control module, a power line carrier communication module, a dual color temperature drive module, and luminaires; the method comprises: The sensor module collects light signals from various areas of the tobacco sorting plant under the current environment and transmits the light signals to the PLC control module. The PLC control module determines the current lighting parameters based on the light signal, compares the current lighting parameters with preset parameters, and generates control commands. The power line carrier communication module transmits the control commands to the dual color temperature drive module; The dual-color temperature drive module adjusts the output duty cycle of the lamp according to the control command so that the current lighting parameters reach the preset parameters.

2. The method according to claim 1, characterized in that, The tobacco sorting plant includes a raw material acceptance area, and the preset parameters include the first preset color temperature range and the first color rendering index threshold. The first preset color temperature range of the raw material acceptance area is fixed at 5300K±200K, and the first color rendering index threshold is greater than or equal to 90.

3. The method according to claim 1, characterized in that, The tobacco sorting plant also includes tobacco leaf grading tables in each area; the preset parameters also include a second preset color temperature range and a first preset constant illuminance; The second preset color temperature range of the tobacco leaf grading table is 5500K±300K, and the first preset constant illuminance is 2000±200lx.

4. The method according to claim 1, characterized in that, The tobacco sorting plant also includes sorting line operation areas; preset parameters also include a third preset color temperature range; The third preset color temperature range for the sorting line operation area is 4000K-5000K.

5. The method according to claim 1, characterized in that, The tobacco sorting plant also includes a quality inspection area; the preset parameters also include a fourth preset color temperature range and a second color rendering index threshold. The fourth preset color temperature range in the quality inspection area is fixed at 5800K±200K, and the second color rendering index threshold is greater than or equal to 95.

6. The method according to claim 1, characterized in that, The tobacco sorting plant also includes a packaging area; the preset parameters also include a fifth preset color temperature range; The fifth preset color temperature range for the packaging area is 3000K-4000K, with the color temperature being 4000K during the day and 3000K at night.

7. The method according to claim 1, characterized in that, The tobacco sorting plant also includes a storage area; the preset parameters also include a sixth preset color temperature range; The sixth preset color temperature range for the storage area is 4000K-5000K.

8. The method according to claim 1, characterized in that, The tobacco sorting plant also includes an equipment maintenance area; preset parameters include a seventh preset color temperature range and a second preset constant illuminance. The seventh preset color temperature range in the equipment maintenance area is fixed at 6000K±500K, and the second preset constant illuminance is 1000lx.

9. The method according to claim 1, characterized in that, The tobacco sorting plant also includes a monitoring room; the preset parameters also include the eighth preset color temperature range; The eighth preset color temperature range in the monitoring room is fixed at 4500K±500K.

10. The method according to claim 1, characterized in that, The tobacco sorting plant also includes rest areas; preset parameters include the ninth preset color temperature range and the third preset constant illuminance. The ninth preset color temperature range for the rest area is fixed at 2800K±200K, and the third preset constant illuminance is 50-100lx.

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