A high-reliability, low-cost, light-intensity-adjustable plant light supplement control lamp

Abstract

The utility model discloses a kind of high reliability, low cost, light intensity adjustable plant light supplement control lamp, belong to plant light supplement technical field.A kind of high reliability, low cost, light intensity adjustable plant light supplement control lamp, including embedded controller, light supplement lamp, current sensor, driver and high-power switching power supply;Source module is used to convert commercial power into isolated DC safety voltage;Embedded controller is used to receive control instruction and output control signal;At least one group of LED lamp group, as light supplement output unit;Driver receives the control signal of controller, adjusts the current output to LED lamp group;Current sensor is used to detect bus current and feedback to controller;The light supplement lamp is output unit;The utility model is to solve the problem that traditional light supplement control scheme in prior art, multiple rely on manual operation to adjust light intensity, lack accurate perception and feedback mechanism, it is difficult to dynamically adjust light supplement parameter according to the real-time demand of plant growth.

Description

Technical Field

[0001] This utility model relates to the field of plant supplemental lighting technology, and in particular to a highly reliable, low-cost, and adjustable light intensity plant supplemental lighting control lamp. Background Technology

[0002] With the rapid development of facility agriculture, plant factories, as a highly intensive agricultural production model, have become an important direction for the development of modern agricultural technology due to their advantages such as being unrestricted by the natural environment and achieving efficient and high-quality crop production. Artificial lighting technology, as one of the core supporting technologies of plant factories, directly affects the growth rate, quality, and yield of crops, and its performance and cost have a crucial impact on the large-scale application of plant factories. Currently, the supplemental lighting control solutions used in plant factories have certain limitations. While supplemental lighting equipment for small planting racks can achieve flexible light adjustment, in large-scale plant factory applications, the cost of individually adjustable individual lamps is high, making it difficult to meet the economic requirements of mass production of crops. At the same time, some existing supplemental lighting systems have complex architectures, which not only increases the difficulty of equipment production but also makes the construction process of plant factories cumbersome, hindering rapid deployment and large-scale promotion. In addition, traditional supplemental lighting control schemes have shortcomings in intelligent management. They rely heavily on manual operation to adjust light intensity and lack precise sensing and feedback mechanisms. It is difficult to dynamically adjust supplemental lighting parameters according to the real-time needs of plant growth, which not only affects the efficiency of supplemental lighting but may also lead to energy waste or crop growth due to improper light intensity control.

[0003] Therefore, developing a supplemental lighting control lamp that is suitable for large-scale plant factories, low in cost, has reliable light intensity regulation, and possesses intelligent management capabilities has become an urgent problem to be solved in the field of artificial light technology for plant factories. Utility Model Content

[0004] The purpose of this invention is to solve the problem that traditional supplemental lighting control schemes in the prior art rely heavily on manual operation to adjust light intensity, lack precise sensing and feedback mechanisms, and are difficult to dynamically adjust supplemental lighting parameters according to the real-time needs of plant growth. Therefore, this invention proposes a highly reliable, low-cost, and light-intensity adjustable plant supplemental lighting control lamp.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A highly reliable, low-cost, and adjustable light intensity plant supplemental lighting control light includes an embedded controller, a supplemental lighting fixture, a current sensor, a driver, and a high-power switching power supply. The power module is used to convert AC mains power into an isolated, safe DC voltage. An embedded controller is used to receive control commands and output control signals. At least one set of LED lights serves as a supplementary lighting output unit; The driver receives control signals from the controller and adjusts the current output to the LED light group; A current sensor is used to detect the bus current and feed it back to the controller; The supplementary lighting fixture is an output unit, containing only the light-emitting part and requiring no driver; The controller has pre-stored the volt-ampere characteristic data of the LED light group. It calculates the current value corresponding to the current voltage by looking up a table or interpolation, and adjusts the driver output accordingly to achieve adjustable light intensity within the range of 0% to 100%.

[0006] Preferably, the controller is also connected to a light intensity sensor to collect ambient light intensity data in real time and automatically adjust the luminous intensity of the LED light group accordingly.

[0007] Preferably, the controller supports receiving control commands via 0-10V analog signals or digital interfaces.

[0008] Preferably, the LED light group has a multi-string and multi-parallel structure, and the controller sets its safe voltage range according to the pre-stored volt-ampere characteristic curve to ensure that the LEDs operate within a safe range.

[0009] Preferably, the controller also has a human-machine interface for local setting and display of working status.

[0010] Preferably, the high-power switching power supply is connected to the mains power, converts the mains power into a safe 48V voltage and supplies power to the entire control lighting system, and the power module outputs 48V DC power.

[0011] Preferably, the controller connects multiple LED light groups via a bus, enabling multiple lights to share a single power supply and controller, thereby reducing system costs.

[0012] Preferably, the controller has a communication interface, which can interact with a host computer or smart terminal to realize remote monitoring and intelligent control.

[0013] Compared with existing technologies, this utility model provides a highly reliable, low-cost, and adjustable light intensity plant supplemental lighting control lamp, which has the following beneficial effects: 1. This utility model adopts an architecture in which multiple supplementary lighting fixtures share a high-power switching power supply. The supplementary lighting fixtures only contain the light-emitting part and do not require independent driving, which simplifies the structure of the fixtures. At the same time, the embedded controller centrally controls the driver with a 0-10V interface or a digital interface, which reduces the hardware cost of driving a single lamp independently and significantly reduces the equipment cost for large-scale deployment, making it more suitable for large-scale plant factories that mass-produce crops. 2. This utility model integrates signal acquisition (voltage, current, light intensity) and control output functions through an embedded controller, and simplifies the assembly process in the equipment production process by combining it with a standardized high-power switching power supply and driver; the overall system architecture is clear, the division of labor of each component is clear and the interface is unified, which reduces the difficulty of installation and debugging in the construction process of plant factories and facilitates rapid large-scale deployment. 3. The system collects light intensity data in real time in µmol / m² / s or W / m² using a light intensity sensor, and monitors the bus current using a DC current sensor. The embedded controller, based on a preset safe voltage range and received control commands (human-machine interface input or host computer command), precisely adjusts the current of the supplementary lighting fixtures through the driver, achieving continuous adjustable brightness from 0-100%. Simultaneously, the integration of information management technology allows the system to dynamically adjust supplementary lighting parameters according to the real-time needs of plant growth, reducing energy waste and improving supplementary lighting efficiency and the stability of crop growth quality. 4. The embedded controller has a preset safe voltage range. Combined with real-time monitoring of lamp voltage and bus current, it can avoid working conditions that exceed the safe range during the supplementary lighting process, and avoid equipment damage caused by overvoltage and overcurrent. All components (such as supplementary lighting fixtures suitable for plant factory environments and isolated high-power switching power supplies) are designed for industrial environments, which improves the reliability of the system in special environments such as long-term high humidity and dust. Attached Figure Description

[0014] Figure 1 This is a diagram showing the overall system architecture of a highly reliable, low-cost, and adjustable light intensity plant supplemental lighting control lamp according to this utility model. Figure 2 This is a graph showing the LED current-voltage characteristic curve of a highly reliable, low-cost, and adjustable light intensity plant supplement light control lamp according to this utility model. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0016] refer to Figures 1-2This embodiment provides a highly reliable, low-cost, and adjustable light intensity plant supplemental lighting control lamp, which mainly consists of an embedded controller, a supplemental lighting fixture, a DC current sensor, a driver with a 0-10V control interface, a high-power switching power supply, a light intensity sensor, a human-machine interface, and a host computer access terminal. The system is powered by a high-power switching power supply connected to AC220V, which converts the AC power into a safe 48V DC voltage isolated from the AC power supply. The supplemental lighting uses LED strings suitable for the high humidity and dusty environment of plant factories, containing only light-emitting diodes and necessary heat dissipation structures, without the need for an independent driver module, serving as the system's light output unit. A DC current sensor is connected in series in the bus to collect the bus current signal in real time. A light intensity sensor is installed near the crop canopy below the supplemental lighting and can output photosynthetically active radiation (PPFD) data in μmol / m² / s. The embedded controller uses an STM32 series microprocessor, integrating signal acquisition interface, control signal output interface, and communication interface, which are respectively connected to the DC current sensor, light intensity sensor, driver, human-machine interface, and host computer access terminal.

[0017] Working principle and process Power supply and initialization After the high-power switching power supply is connected to the mains power, it outputs a 48V DC voltage to the driver and embedded controller, and the system is powered on and initialized. After the embedded controller starts up, it automatically loads the pre-stored safe voltage range parameters of the supplementary lighting fixture (determined based on the LED volt-ampere characteristic curve, set to 2.7V-3.4V in this embodiment), and completes the communication detection of each sensor and driver through the internal program to ensure that the hardware connection is normal.

[0018] Light intensity modulation command reception Users can manually input the target light intensity value through a human-machine interface (such as a knob or touchscreen) or receive remote control commands (such as light intensity parameters issued by a plant growth management system) through a host computer access point. The embedded controller converts the received commands into corresponding current adjustment signals, and determines the output current range of the driver by combining the voltage-current mapping relationship in the LED's volt-ampere characteristics (achieved through pre-stored data lookup and interpolation calculations).

[0019] Real-time monitoring and feedback control A DC current sensor collects the bus current signal in real time and transmits it to the embedded controller. The controller uses the current value to infer the actual operating voltage of the supplementary lighting fixture (based on the approximate linear relationship of multiple series and parallel lamp strings) to determine whether it is within the safe voltage range. Simultaneously, a illuminance sensor feeds back the collected real-time PPFD data to the controller, forming a closed-loop control system. If the actual illuminance deviates from the target value, the controller adjusts the voltage signal output to the driver's 0-10V control interface (0V corresponds to 0% brightness, 10V corresponds to 100% brightness), driving the driver to adjust the output current so that the luminous intensity of the supplementary lighting fixture dynamically approaches the target value within a safe range. For example, when the actual PPFD is detected to be lower than the target value, the controller increases the 0-10V control signal voltage, increasing the driver's output current and improving the brightness of the lamp strings; conversely, it decreases the control voltage and reduces the output current.

[0020] Anomaly protection mechanism If the embedded controller detects that the voltage of the supplementary lighting fixture exceeds the safe range of 2.7V-3.4V, or that the bus current is abnormal (such as short circuit or overcurrent), it will immediately cut off the control signal of the driver, causing the light string to stop working, and display the fault code through the human-machine interface. At the same time, it will send alarm information to the host computer to avoid equipment damage and ensure the reliability of system operation.

[0021] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

[0022] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0023] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A highly reliable, low-cost, and adjustable light intensity plant supplemental lighting control lamp, characterized in that, This includes embedded controllers, supplementary lighting fixtures, current sensors, drivers, and high-power switching power supplies; The power module is used to convert AC mains power into an isolated, safe DC voltage. An embedded controller is used to receive control commands and output control signals. At least one set of LED lights serves as a supplementary lighting output unit; The driver receives control signals from the controller and adjusts the current output to the LED light group; A current sensor is used to detect the bus current and feed it back to the controller; The supplementary lighting fixture is an output unit, containing only the light-emitting part and requiring no driver; The controller has pre-stored the volt-ampere characteristic data of the LED light group. It calculates the current value corresponding to the current voltage by looking up a table or interpolation, and adjusts the driver output accordingly to achieve adjustable light intensity within the range of 0% to 100%.

2. The highly reliable, low-cost, and adjustable light intensity plant supplemental lighting control lamp according to claim 1, characterized in that: The controller is also connected to a light intensity sensor to collect ambient light intensity data in real time and automatically adjust the luminous intensity of the LED lights accordingly.

3. The highly reliable, low-cost, and adjustable light intensity plant supplemental lighting control lamp according to claim 2, characterized in that: The controller supports receiving control commands via 0-10V analog signals or digital interfaces.

4. The highly reliable, low-cost, and adjustable light intensity plant supplemental lighting control lamp according to claim 1, characterized in that: The LED light group has a multi-string and multi-parallel structure. The controller sets its safe voltage range according to the pre-stored volt-ampere characteristic curve to ensure that the LEDs operate within a safe range.

5. A highly reliable, low-cost, and adjustable light intensity plant supplemental lighting control lamp according to claim 1, characterized in that: The controller also has a human-machine interface for local settings and display of working status.

6. A highly reliable, low-cost, and adjustable light intensity plant supplemental lighting control lamp according to claim 1, characterized in that: The high-power switching power supply is connected to the mains power, converts the mains power into a safe 48V voltage and supplies power to the entire control lighting system. The power module outputs 48V DC power.

7. The highly reliable, low-cost, and adjustable light intensity plant supplemental lighting control lamp according to claim 1, characterized in that: The controller connects multiple LED light groups via a bus, enabling multiple lights to share a single power supply and controller, thus reducing system costs.

8. A highly reliable, low-cost, and adjustable light intensity plant supplemental lighting control lamp according to claim 1, characterized in that: The controller has a communication interface, which can interact with a host computer or smart terminal to achieve remote monitoring and intelligent control.

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