Remote controller for LED street lamp atmosphere illumination based on internet of things

Abstract

This utility model relates to the field of lighting control technology. To address the technical problem of poor control flexibility caused by the incompatibility of existing LED street light ambient lighting systems with ambient light control and remote management, this utility model discloses an IoT-based remote controller for LED street light ambient lighting, including an IoT module, an ambient light circuit, and a power control circuit. The power supply to the ambient light circuit is input through the power control circuit, and the selection of the two LED arrays in the ambient light circuit is controlled by the IoT module U13. The power control circuit controls the power supply status of the ambient light circuit based on the ambient light intensity and the control signal from the IoT module. By integrating the IoT module and a communication antenna, remote control of the LED street light ambient lighting system is achieved, improving the system's intelligent management level. A photodiode is introduced for ambient light sensing, combined with a multi-stage transistor logic control circuit and a thyristor as the main control switch, automatically cutting off the power supply path when the light is strong.

Description

Technical Field

[0001] This utility model relates to the field of lighting control technology, and in particular to a remote controller for LED street light ambient lighting based on the Internet of Things. Background Technology

[0002] With the acceleration of urbanization and the advancement of smart city construction, LED streetlights are widely used in road lighting systems due to their advantages such as energy saving, environmental protection, and long lifespan. Traditional LED streetlights mainly focus on functional lighting, that is, providing sufficient brightness to meet the needs of nighttime driving and pedestrian safety, while relatively lacking in functions such as ambient lighting and landscaping.

[0003] In recent years, in order to improve the city's night view and the quality of life for residents, many cities have begun to introduce "ambient lighting" functions into streetlights, creating specific visual atmospheres through LED light groups with different colors, brightness, or dynamic changes.

[0004] Existing LED street light control systems do not require lighting during the day when sunlight is strong. However, interference with the electronic system or remote operation errors can cause ambient lighting to be accidentally activated, resulting in unnecessary energy waste. Conversely, in low light conditions, it is difficult to accurately control the ambient lighting remotely. This not only affects the system's intelligence level but also reduces energy efficiency.

[0005] Therefore, there is an urgent need for an LED street light ambient lighting controller that can combine IoT technology, has remote control capabilities, and can automatically switch working states according to ambient light intensity, so as to realize the management of street light ambient lighting. Utility Model Content

[0006] The purpose of this invention is to provide an IoT-based remote controller for LED street light ambient lighting, in order to solve the technical problem that existing LED street light ambient lighting systems are incompatible with ambient light control and remote management, resulting in poor control flexibility.

[0007] To achieve the above objectives, the specific technical solution of the IoT-based remote controller for LED street light ambient lighting of this utility model is as follows:

[0008] The IoT-based remote controller for LED streetlight ambient lighting includes an IoT module, an ambient lighting circuit, and a power control circuit. The IoT module is connected to a communication antenna. The ambient lighting circuit includes a first LED array and a second LED array. The power supply for the ambient lighting circuit is input through the power control circuit. The selection of the two LED arrays in the ambient lighting circuit is controlled by the IoT module U13. The power control circuit is used to control the power supply status of the ambient lighting circuit according to the ambient light intensity and the control signal from the IoT module.

[0009] The power control circuit includes NPN transistors Q18, Q19, Q20, and Q21, as well as thyristor KD1;

[0010] The base of transistor Q19 is connected to the pull-up power supply VCC through photodiode D49;

[0011] The base of transistor Q20 is connected to the collector of transistor Q19;

[0012] The base of transistor Q21 is connected to the collector of transistor Q20 through capacitor C25;

[0013] The anode of thyristor KD1 is connected to the pull-up power supply VCC, its cathode is connected to the emitter of transistor Q21, and its control electrode is connected to the collector of transistor Q21.

[0014] Furthermore, each LED array in the ambient lighting circuit is connected in series with a first resistor, a first LED, and a second LED. The cathode of the second LED in the first LED array is connected to the collector of an NPN transistor Q16, the emitter of transistor Q16 is grounded, and its base is connected to the CTL02 port of the IoT module through resistor R43. The first resistor in the second LED array is connected to the collector of a PNP transistor Q17, the emitter of transistor Q17 is connected to the control circuit, and its receiving terminal is connected to the CTL02 port of the IoT module through diode D48 and resistor R51. By using the different conduction modes of NPN and PNP transistors, each LED array can be flexibly turned on or off according to the signal output by the IoT module, thereby achieving the lighting effect.

[0015] Furthermore, the base of transistor Q18 is connected to the CTL02 port of the IoT module through resistor R53, and its collector is connected to the pull-up power supply VCC through resistors R54 and R60. A diode D51 is connected in parallel with resistor R60. This enables transistor Q18 to respond to control signals from the IoT module and realize logic control of subsequent control links. The parallel diode D51 can effectively prevent reverse voltage surges, improve the system's anti-interference capability and stability, and optimize the reliability of the power path.

[0016] Furthermore, the base of transistor Q19 is connected to the pull-up power supply VCC via photodiode D49. When the light is strong, the reverse current of the photodiode increases, causing transistor Q19 to conduct, which in turn causes transistor Q20 to cut off, thus preventing thyristor KD1 from conducting and preventing the ambient light from being accidentally activated during the day. By introducing photodiode D49, an ambient light sensing function is achieved, automatically cutting off the power supply path when there is sufficient light, avoiding unnecessary energy loss during the day.

[0017] Furthermore, the base of transistor Q20 is connected to the collector of transistor Q19, and the base of transistor Q21 is connected to the collector of transistor Q20 through capacitor C25, which is used to delay or filter the control signal and improve system stability.

[0018] Furthermore, the bases of transistors Q18 and Q21 are equipped with bias resistors R52 and R59, respectively, to stabilize the operating state of the transistors. Setting bias resistors provides a stable static operating point for the transistors, preventing malfunctions caused by temperature changes or power fluctuations, improving the stability and reliability of the entire control circuit, and ensuring the system operates normally under various conditions.

[0019] The IoT-based remote controller for LED street light ambient lighting provided by this utility model has the following advantages:

[0020] This invention integrates an IoT module and a communication antenna to achieve remote control of the LED street light ambient lighting system, thereby improving the system's intelligent management level. It employs a dual-LED array structure with NPN and PNP transistors for a gating mechanism, enabling flexible and accurate switching of lighting modes and achieving various lighting effects to meet different scenario requirements. A photodiode is introduced for ambient light sensing, combined with a multi-stage transistor logic control circuit and a thyristor as the main control switch. This automatically cuts off the power supply path when the light is strong, preventing false starts and significantly reducing energy consumption. Simultaneously, capacitor filtering enhances system stability. Attached Figure Description

[0021] Figure 1 The Internet of Things module and peripheral circuit diagram provided by this utility model;

[0022] Figure 2 The LED street light ambient light circuit diagram provided by this utility model;

[0023] Figure 3 The LED street light control circuit diagram provided by this utility model. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely for explaining the present utility model and are not intended to limit the present utility model.

[0025] See Figures 1 to 3The present invention provides an IoT-based remote controller for LED street light ambient lighting, including an IoT module U13, an ambient light circuit, and a power control circuit. The IoT module U13 is connected to a communication antenna ANT. The ambient light circuit includes a first LED array and a second LED array. Each LED array includes a first resistor, a first light-emitting diode, and a second light-emitting diode connected in series.

[0026] The power supply for the ambient lighting circuit is input through the power control circuit, and the selection of the two LED arrays of the ambient lighting circuit is controlled by the Internet of Things module U13.

[0027] In the first LED array, the power receiving terminal CON1 is connected to the control circuit. The cathode of the second LED in the first LED array is connected to the collector of transistor Q16, the emitter of transistor Q16 is grounded, and the base of transistor Q16 is connected to the CTL02 port of IoT module U13 through resistor R43. In the second LED array, the cathode of the second LED is grounded. The first resistor in the second LED array is connected to the collector of transistor Q17, the emitter of transistor Q17 is connected to the control circuit, and the power receiving terminal of transistor Q17 is connected to the CTL02 port of IoT module U13 through diode D48 and resistor R51. Transistor Q16 is an NPN transistor, and transistor Q17 is a PNP transistor.

[0028] The power control circuit includes NPN transistors Q18, Q19, Q20, Q21, and thyristor KD1. Transistors Q18, Q19, and Q21 have a common emitter. The emitter of transistor Q20 is connected to the emitter of transistor Q18 through resistor R56, serving as the power supply terminal for the ambient light circuit, which is also the power receiving terminal of the ambient light circuit.

[0029] The collector of transistor Q18 is connected to the pull-up power supply VCC via resistors R54 and R60. Resistor R60 is connected in parallel with diode D51, whose cathode is connected to the pull-up power supply. Transistor Q19 is connected to the collector of transistor Q18 via resistor R55. The collector of transistor Q20 is connected to the pull-up power supply VCC via resistors R57 and R60. The collector of transistor Q21 is connected to the pull-up power supply VCC via resistor R58. The base of transistor Q18... The IoT module U13 is connected via resistor R53 to its CTL02 port. The base of transistor Q19 is connected to the pull-up power supply VCC via photodiode D49 and resistor R60. The anode of photodiode D49 is connected to the base of transistor Q19, and the cathode of photodiode D49 is connected to the anode of diode D51. The base of transistor Q20 is connected to the collector of transistor Q19, and the base of transistor Q21 is connected to the collector of transistor Q20 via capacitor C25. Bias resistors R52 and R59 are respectively installed at the bases of transistors Q18 and Q21.

[0030] A thyristor KD1 is provided. The anode of the thyristor KD1 is connected to the pull-up power supply VCC, the cathode of the thyristor KD1 is connected to the emitter of the transistor Q21, and the control electrode of the thyristor KD1 is connected to the collector of the transistor Q21.

[0031] from Figure 3 As can be seen, thyristor KD1 is an electronic switch. When KD1 is turned off, the ambient light circuit has no power input and the ambient light does not light up.

[0032] The photodiode D49 is used. When the light is dim, the reverse current of the photodiode D49 is very small, which is equivalent to the cut-off state. When the light is strong, the reverse current of the photodiode D49 increases significantly, and the stronger the light, the greater the reverse current.

[0033] When the light is strong, the reverse current of the photodiode is large, causing NPN transistor Q19 to conduct. The base of transistor Q20 is directly pulled to ground, and transistor Q20 remains in the off state. The base of transistor Q21 forms a base current through the pull-up resistor R59, so transistor Q20 conducts. At this time, the control terminal of thyristor KD1 is at a low level, thyristor KD1 is cut off, and a circuit cannot be formed, so the ambient light does not light up.

[0034] When the light is strong, the base of transistor Q20 is pulled to ground, and transistor Q20 is cut off. No matter what signal is at the CTL02 terminal of IoT module U13, it cannot be transmitted through transistor Q20. In other words, when the light is strong, i.e. during the day, IoT module U13 cannot control the ambient lighting circuit of the LED street light to light up.

[0035] When the light is dim, photodiode D49 is reverse-biased and transistor Q19 is cut off. Since no signal is emitted by IoT module U13, transistor Q18 is turned on and transistor Q20 is cut off. When transistor Q20 is turned on, the control terminal of thyristor KD1 is at a low level, so thyristor KD1 is cut off and no circuit is formed. Therefore, the LED street light does not light up.

[0036] When the IoT module U13 sends a light-up signal, the high level is active, causing the base voltage of transistor Q18 to be low, thus turning off transistor Q18. This turns on transistor Q20, pulling the left side of capacitor C25 low, charging the capacitor and forming a current, which turns off transistor Q4. At this time, the control terminal of thyristor KD1 is at a high level, so thyristor KD1 conducts, forming a circuit, and the LED street light is lit.

[0037] This utility model provides an IoT-based remote controller for LED streetlight ambient lighting. By integrating an IoT module with ambient light sensing control, it achieves remote intelligent control and automatic adjustment of the LED streetlight ambient lighting system, effectively avoiding energy waste caused by accidental daytime activation and improving the system's intelligence level and operating efficiency. Simultaneously, by employing multiple LED arrays in conjunction with transistor gating control, it can flexibly achieve different colors, brightness levels, or dynamic lighting effects, enhancing the aesthetic appeal of urban nightscapes. The power control circuit is rationally designed, combining thyristor switching characteristics and photosensitive element response mechanisms to ensure that the system only activates lighting upon receiving a remote command in low-light conditions, thereby improving the system's energy efficiency, stability, and controllability.

[0038] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A remote controller for LED street light ambience lighting based on Internet of Things, characterized in that, The system includes an IoT module, an ambient lighting circuit, and a power control circuit. The IoT module is connected to a communication antenna. The ambient lighting circuit includes a first LED array and a second LED array. The power supply for the ambient lighting circuit is input through the power control circuit, and the selection of the two LED arrays is controlled by the IoT module U13. The power control circuit controls the power supply status of the ambient lighting circuit based on the ambient light intensity and the control signal from the IoT module. The power control circuit includes NPN transistors Q18, Q19, Q20, and Q21, as well as a thyristor KD1. The base of transistor Q19 is connected to the pull-up power supply VCC via photodiode D49; the base of transistor Q20 is connected to the collector of transistor Q19; the base of transistor Q21 is connected to the collector of transistor Q20 via capacitor C25; the anode of thyristor KD1 is connected to the pull-up power supply VCC, its cathode is connected to the emitter of transistor Q21, and its control electrode is connected to the collector of transistor Q21; each LED array in the ambient light circuit is connected in series with a first resistor, a first LED, and a second LED; wherein, the cathode of the second LED in the first LED array is connected to... The collector of the NPN transistor Q16 is connected to the collector, the emitter of Q16 is grounded, and its base is connected to the CTL02 port of the IoT module through resistor R43; the first resistor of the second LED array is connected to the collector of the PNP transistor Q17, the emitter of Q17 is connected to the control circuit, and its receiving terminal is connected to the CTL02 port of the IoT module through diode D48 and resistor R51 in sequence; the base of transistor Q18 is connected to the CTL02 port of the IoT module through resistor R53, and its collector is connected to the control circuit through resistors R54 and R60. The circuit is connected to the pull-up power supply VCC, and a diode D51 is connected in parallel with resistor R60. The base of transistor Q19 is connected to the pull-up power supply VCC through photodiode D49. When the light is strong, the reverse current of the photodiode increases, causing transistor Q19 to conduct, which in turn causes transistor Q20 to be cut off, thereby preventing thyristor KD1 from conducting and preventing the ambient light from being accidentally activated during the day. The base of transistor Q20 is connected to the collector of transistor Q19, and the base of transistor Q21 is connected to the collector of transistor Q20 through capacitor C25, which is used to delay or filter the control signal and improve system stability.

2. The IoT-based remote controller for LED street light ambience lighting as claimed in claim 1 wherein, The bases of transistors Q18 and Q21 are respectively equipped with bias resistors R52 and R59 to stabilize the operating state of the transistors.

Images