Illuminating system with adjustable optical angle and control method

Abstract

The invention provides an optical angle adjustable lighting system and a control method, belongs to the technical field of lighting, and is used for solving the problems that existing lighting equipment is tedious in angle adjustment, poor in outdoor reliability and insufficient in multi-optical parameter collaboration. The system comprises a control unit, an LED shunt group, an execution unit and the like. The control unit is provided with a multi-gear dial switch and an MCU (Microprogrammed Control Unit), the multi-gear dial switch is used for pre-storing optical calibration parameters, the LED shunt group comprises a cold / warm white LED and an integrated 90-degree large-angle and 45-degree small-angle light packet, a shift-free lens is synthesized into a middle angle, and the execution unit adopts an MOS (Metal Oxide Semiconductor) tube array to adjust the current of the LED shunt. The control method comprises the steps of power-on self-test, day and night target dimming judgment by the detection unit and the sensing module, remote parameter adjustment compensation by preferentially combining optical parameter calibration, angle color temperature illumination adjustment by PWM control current, energy consumption monitoring, intelligent heat dissipation, graded fault alarm and regular calibration. The angle is adjusted without disassembly, the outdoor reliability is improved, multiple parameters are stably controlled, the energy consumption and the operation and maintenance cost are reduced, the service life is prolonged, and the LED lamp is suitable for industrial, commercial and road illumination.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of lighting technology, in particular to an optical angle adjustable lighting system and a control method. BACKGROUND

[0002] Lighting devices are widely used in industrial lighting, commercial lighting and other fields, and the adjustability of their optical angle, color temperature and power has an important influence on the lighting effect and energy efficiency level.

[0003] However, the lighting devices in the prior art have the following defects: the optical angle of most lighting devices is fixedly set, and the angle of a few adjustable devices is adjusted by disassembling optical components, changing the relative position of the light source and the lens, etc. The operation process is cumbersome, it is difficult to respond to the lighting demand in real time, and frequent disassembly and assembly can easily damage the optical components; the lighting devices applied to outdoor scenes are prone to water ingress failure in humid, rainy and other environments due to the limitations of waterproof structure design, which leads to short circuit failure of internal electrical components and seriously shortens the service life of the device; when adjusting the optical angle, it is difficult to simultaneously realize the matching adjustment of the color temperature and the power, so that the color temperature stability and brightness consistency of the light are poor, which cannot meet the diversified demand of different scenes such as indoor lighting, industrial operation lighting and road lighting for lighting quality; most lighting devices rely on manual on-off control and cannot automatically adjust the working state according to the ambient light intensity, which increases the operation and maintenance cost and causes energy waste. SUMMARY

[0004] The main purpose of the present application is to provide an optical angle adjustable lighting system and a control method, which solves the problems of cumbersome optical angle adjustment, poor outdoor waterproof performance and insufficient multi-light parameter collaborative control of existing lighting devices.

[0005] In a preferred embodiment, the optical angle adjustable lighting system comprises a control unit, an LED branch group, a power module, an execution unit, a detection unit, a remote communication module, a fault alarm module, a heat dissipation enhancement module, an energy consumption monitoring module, a sensing module, a light parameter calibration module and a lightning protection module. In a preferred embodiment, the control unit comprises a dial switch and an MCU, the dial switch adopts a multi-gear mechanical dial structure, each gear pre-stores angle, color temperature and illumination intensity combination parameters calibrated by the light, and is used for receiving local adjustment instructions; the MCU is used for analyzing signals of each module, receiving instruction data, fault alarm and other state feedback, generating control instructions and ensuring collaborative execution of each function.

[0006] In the preferred scheme, the LED branch group includes C1 / C2 cold white LEDs, W1 / W2 warm white LEDs and a lens, the lens is provided with a large-angle light package corresponding to C1 and W1 with an irradiation angle of 90° and a small-angle light package corresponding to C2 and W2 with an irradiation angle of 45°, so that any intermediate angle can be synthesized by adjusting the brightness ratio of the LED branches without moving the lens. In the preferred scheme, the power module selects a switching power supply to provide stable power supply for each module of the system.

[0007] In the preferred scheme, the execution unit adopts a MOS tube array to receive the control signal output by the MCU, adjust the current on / off and current size of the LED branches (C1, W1, C2 and W2) and realize the brightness ratio adjustment of each branch.

[0008] In the preferred scheme, the detection unit includes a light control switch and a temperature sensor, the light control switch collects ambient light intensity, judges the day and night mode in combination with the sensing module and avoids daytime false triggering, and the temperature sensor is embedded in the heat sink to detect the temperature in real time and feed back to the MCU for judging the fan start of the heat dissipation enhancement module.

[0009] In the preferred scheme, the remote communication module can automatically connect to a preset network, establish a communication link with a remote monitoring platform, receive the parameter adjustment instruction issued by the platform and transmit it to the MCU, and at the same time, can return the energy consumption data, fault information and light parameter data of the system to the platform to realize unattended operation and maintenance effect, reduce on-site operation cost, support remote fault diagnosis and improve operation and maintenance efficiency.

[0010] In the preferred scheme, the fault alarm module includes a buzzer and an indicator light connected with the control unit, the MCU in the control unit outputs a control signal according to the fault type: when a safety fault such as LED short circuit or lightning protection failure occurs, a continuous sound and light alarm is triggered; when a functional fault such as calibration failure or abnormal energy consumption occurs, an intermittent sound and light alarm is triggered; the faults can be quickly identified and timely warned to avoid the expansion of the faults.

[0011] In the preferred scheme, the heat dissipation enhancement module includes heat dissipation fins and a fan for conducting the heat generated by the LED lamp panel to the heat dissipation fins through the heat sink, when the temperature sensor detects that the temperature of the heat sink exceeds the standard, the MCU controls the fan to start and accelerate the heat dissipation to avoid the accelerated light decay of the LED due to high temperature and prolong the service life of the equipment.

[0012] In the preferred scheme, the energy consumption monitoring module adopts a current and voltage sampling chip for collecting the voltage and current signals output by the power supply, converting them into digital signals and transmitting them to the MCU, the MCU calculates the real-time power consumption and cumulative energy consumption and checks the circuit abnormalities.

[0013] In the preferred solution, the induction module detects the moving target in the detection range by emitting and receiving specific signals, and outputs a signal to the MCU when the target is detected, triggering the system to switch to normal brightness; when there is no target, the system maintains low brightness mode, achieving adaptive dimming energy saving and reducing invalid energy consumption.

[0014] In the preferred solution, the light parameter calibration module includes a light sensor, which periodically starts the calibration process, first collects the ambient light intensity without interference, then lights up the LED according to the preset parameters, and collects the actual color temperature and light intensity; the MCU calculates the compensation coefficient and updates the current distribution logic to solve the parameter deviation caused by light decay during long-term use of the LED, ensuring the stability of the light precision.

[0015] In the preferred solution, the lightning protection module includes a voltage-dependent resistor and a gas discharge tube connected in parallel at the input end of the power module; when lightning or power surge is encountered, the voltage-dependent resistor quickly breaks down to guide the surge current into the ground, and the gas discharge tube simultaneously acts to suppress the residual surge, while the module fault detection end outputs a low level to the MCU, improving the safety of outdoor use and avoiding damage to the power supply and internal electrical components caused by surge voltage.

[0016] The method comprises: S1, the power module is connected and outputs stable voltage, the lightning protection, remote communication and fault alarm modules are powered on synchronously; the lightning protection module is self-checked and ready, the remote communication module establishes platform connection and feedbacks online state, and the fault alarm module is self-checked and confirmed to be normal; S2, the MCU waits for stable power supply, reads preset parameters and historical calibration coefficients, and initializes the working modes of each interface and module; after completion, the system is ready state is fed back to the remote platform; S3, the light control switch collects ambient light intensity, the temperature sensor collects the temperature of the heat sink, and the human body induction module detects the target; the MCU comprehensively judges the day and night mode: in the daytime, it enters low-power standby, and at night, it switches to low brightness or normal adjustment state according to whether there is a target, and simultaneously controls the fan start-stop according to temperature; S4, the gear is switched by operating the dial switch, and the gear signal is transmitted to the MCU, which identifies the gear through level logic and retrieves the corresponding target parameters; the remote platform sends parameter adjustment instructions, and if the verification is passed, the remote instructions are parsed preferentially, and the dial signal is ignored; after the parsing is completed, the MCU reads the compensation coefficient of the light parameter calibration module to correct the target parameters; S5, parameter analysis and PWM calculation: the MCU determines the LED branch brightness ratio, color temperature current ratio and total current reference according to the corrected parameters, and calculates the PWM duty cycle of each branch MOS tube; S6, the MCU outputs PWM signals to control the MOS tube, and adjusts the current and brightness of each LED branch; the light passes through different light packages of the lens module and is superimposed to synthesize the target optical angle; S7, the sampling circuit collects the LED branch current in real time and feeds back to the MCU, compares the actual current with the target current ratio, adjusts the PWM duty cycle until the deviation meets the requirements, and ensures the stability of the color temperature; S8, the current control module collects the LED branch current and feeds back to the MCU, calculates the actual illumination intensity, compares it with the target value, and then adjusts the PWM duty cycle to correct the total current, ensuring that the illumination intensity meets the standard; S9, in the normal brightness mode at night, the MCU continuously monitors the sensing signal, and switches to low brightness after the target timeout; when the target is detected again, the normal brightness is quickly restored, and the fan is started and stopped according to the temperature data; S10, the energy consumption monitoring module collects data regularly, the MCU calculates and stores the energy consumption and uploads it to the remote platform, and clears the daily storage data; S11, the MCU regularly wakes up the system to start calibration, collects the ambient light intensity and the actual LED light parameters, calculates the compensation coefficient and updates the parameter configuration; S12, the system monitors the state of each module in real time, and handles faults according to priority: safety faults trigger emergency disposal and alarm, functional faults trigger regular alarm, slight faults are only recorded locally, and the alarm stops after the fault is removed and feedback to the platform; The application provides an optical angle adjustable lighting system and a control method, which can realize quick switching of optical angle without disassembling or moving optical components, is convenient to operate, avoids damage to optical components, improves outdoor waterproof performance through a multi-layer sealing structure to ensure equipment reliability and service life, realizes synchronous adjustment of optical angle, color temperature and power through cooperation of the current control module and the MCU, ensures stability and consistency of illumination parameters, and reduces operation and maintenance cost and energy consumption through adaptive control of the light control switch. The integrated heat dissipation design effectively reduces the working temperature of the LED, avoids light decay, ensures the energy efficiency and service life of the equipment. BRIEF DESCRIPTION OF DRAWINGS

[0017] The application will be further described below in combination with the drawings and examples: Fig. 1 is a schematic diagram of an optical angle adjustable lighting system of the application; Fig. 2 is a schematic diagram of an LED branch group light package of the application; In the figure: control unit 1, LED branch group 2, power module 3, execution unit 4, detection unit 5, remote communication module 6, fault alarm module 7, heat dissipation enhancement module 8, energy consumption monitoring module 9, sensing module 10, light parameter calibration module 11, lightning protection module 12. DETAILED DESCRIPTION

[0018] As Figs. 1-2As shown, an optical angle adjustable lighting system includes a control unit 1, an LED branch group 2, a power module 3, an execution unit 4, a detection unit 5, a remote communication module 6, a fault alarm module 7, a heat dissipation enhancement module 8, an energy consumption monitoring module 9, an induction module 10, a light parameter calibration module 11, and a lightning protection module 12.

[0019] In the preferred scheme, the dial switch of the control unit 1 is of the DS-312 model 3-bit mechanical dial switch, and the MCU is of the STM32F103C8T6 ARM Cortex-M3 core microcontroller. The dial switch pin is connected to the MCU, and a 10kΩ pull-up resistor is connected in series to each path to ensure that the pin is high when not operated. The pin distribution of the MCU is as follows: PA0-PA2 are allocated for dial input, PB0-PB3 are allocated for PWM output, PB6-PB7 are connected to the light control switch of the detection unit 5 and the light parameter calibration module 11, PB10-PB11 are connected to the energy consumption monitoring module 9, PC0 is allocated for the input of the induction module 10, PC1 is allocated for the fault input of the lightning protection module 12, PD0 is allocated for the buzzer control of the fault alarm module 7, PD1, PD2 are allocated for the fault alarm module 7, PA9-PA10 are allocated for the connection of the remote communication module 6, and PA1 is connected to the temperature sensor of the detection unit 5.

[0020] In the preferred scheme, C1 / C2 of the LED branch group 2 are Samsung LM281B cool white LEDs with a luminous flux of 20 lm and a color temperature of 5700K, and W1 / W2 are the same type of warm white LEDs with a luminous flux of 20 lm and a color temperature of 3000K. Five LEDs are connected in series in each path, the total voltage is 15-16V, and the output end of the power module 3 is powered by 12V. A 10Ω / 1W current limiting resistor is connected in series in each path to control the current to be stable at 60mA.

[0021] In the preferred scheme, the power module 3 is of the Mingwei LRS-50-12 switching power supply with an input voltage of 100-240V AC, an output voltage of 12V DC, and a power of 50W. The power output end is connected in parallel with a 1000μF / 16V electrolytic capacitor to filter low-frequency noise and a 0.1μF ceramic capacitor to filter high-frequency noise. The pin is connected to the PC4 pin of the MCU in the control unit 1, the output voltage is stabilized at 12V, the pin output is high, and the MCU detects the high level to confirm that the power supply is normal.

[0022] In the preferred scheme, the execution unit 4 is of the IRF540N N-channel enhancement mode MOS tube, the gate is connected to the PWM output pin of the MCU in the control unit 1 through a 1kΩ current limiting resistor, the source is connected to the ground through a shunt resistor, and the drain is connected to the positive electrode of the LED branch group 2. The sampling circuit collects the current through the voltage across the shunt resistor, and the voltage signal is input to the ADC pin of the MCU in the control unit 1 after amplification to improve the sampling accuracy.

[0023] In the preferred embodiment, the light control switch of the detection unit 5 is a BH1750FVI module with a measurement range of 0-65535 lux. It collects light intensity at a frequency of 1 Hz, starts the measurement by sending a command, and calculates the light intensity. The temperature sensor communicates with the MCU of the control unit 1 through a single bus protocol. The MCU sends a reset signal to read the temperature data.

[0024] In the preferred embodiment, the remote communication module 6 adopts an ESP8266-12F WiFi module, which is connected to the MCU in the control unit 1; the module firmware is burned with a client program to establish a communication link with the remote monitoring platform and realize two-way communication.

[0025] In the preferred embodiment, the fault alarm module 7 uses an active buzzer, with its positive terminal connected to the PD0 pin of the MCU in the control unit 1 through a 1kΩ current-limiting resistor; the positive terminal of the red LED is connected to the PD1 pin through a 220Ω current-limiting resistor, and the positive terminal of the yellow LED is connected to the PD2 pin through a 220Ω current-limiting resistor, with the negative terminals of both grounded; the buzzer sounds when PD0 outputs a high level, and the corresponding LED lights up when PD1 / PD2 outputs a high level.

[0026] In the preferred embodiment, the heat sink body of the heat dissipation enhancement module 8 is made of aluminum alloy, with two embedded U-copper heat pipes. The heat pipes and the heat sink are bonded together with thermal grease and are located on the backplate of the LED branch group 2. The heat dissipation fins are made of aluminum alloy with a comb-like structure and a fin spacing of 5mm. The fan is an AD0812HB-A71GL silent fan, which is connected to the PD3 pin of the MCU in the control unit 1 and the 12V output of the power module 3 through a 2-pin terminal. The fan starts when the PD3 output is high. The temperature sensor in the detection unit 5 is a DS18B20 digital temperature sensor, which is connected to the PA1 pin of the MCU in the control unit 1 through a bus to monitor the temperature.

[0027] In the preferred embodiment, the energy consumption monitoring module 9 uses the INA219 module. The SDA pin is connected to PB11 of the MCU in the control unit 1, and the SCL pin is connected to PB10. The module has a built-in 0.1Ω sampling resistor, a refresh frequency of 100kHz, a current measurement accuracy of ±1%, and supports bidirectional current measurement from -3.2A to 3.2A. The MCU of the control unit 1 sends configuration instructions to read the voltage register and current register data and calculates the real-time power consumption and cumulative energy consumption.

[0028] In the preferred embodiment, the sensing module 10 uses an RCWL-0516 microwave radar sensor, and the OUT pin is connected to the PC0 pin of the MCU in the control unit 1 through a 1kΩ current-limiting resistor. To reduce false triggering, the MCU of the control unit 1 detects a high level three times at 200ms intervals to determine the presence of a target, thus filtering out interference signals.

[0029] In the preferred embodiment, the optical parameter calibration module 11 adopts the TSL2591 module, which has a built-in infrared filter to avoid infrared light interference with color temperature detection. The illumination measurement range is 0.1-65535 lux, and the color temperature measurement range is 2800K-6500K. Before calibration, the MCU of the control unit 1 controls the LED branch group 2 to turn off for 30 seconds and sends a calibration command to the optical parameter calibration module 11 to read the ambient light intensity. When the ambient light intensity is >10 lux, the calibration command is uploaded through the remote communication module 6.

[0030] In the preferred embodiment, the surge protection module 12 consists of a 10D471K varistor and a GDT-8 / 20 gas discharge tube connected in series. One end of the varistor is connected to the live wire of the power supply, and the other end is connected to one end of the gas discharge tube, while the other end of the gas discharge tube is connected to the ground wire of the power supply. The varistor has a rated voltage of 470V, a maximum inrush current of 10kA, and a response time of < 25ns. The gas discharge tube has a DC breakdown voltage of 90V-110V and a discharge current of 20kA. The module's fault detection terminal is connected to the PC1 pin of the MCU in the control unit 1 through a 10kΩ pull-up resistor. Under normal conditions, the varistor is in a high-impedance state, and the detection terminal outputs a high level. When the varistor breaks down and short-circuits, the detection terminal outputs a low level, triggering the fault alarm module 7 to alarm.

[0031] In a preferred embodiment, a control method for an optically adjustable lighting system includes the following steps: S1. The power module 3 input terminal is connected to 220V AC mains power and outputs 12V voltage; the surge protection module 12 enters standby mode, and the fault detection terminal outputs a high level to the PC1 pin of the MCU in the control unit 1 through a 10kΩ pull-up resistor; the remote communication module 6 is powered on and automatically connects to the preset SSID. After successful connection, it establishes a connection with the remote platform; the fault alarm module 7 is powered on, and after the control unit 1 completes its self-test, it enters the initialization stage. S2. Control unit 1 executes the initialization program, reads the verification parameters and compares them with the currently calculated 8 sets of preset parameters. If they match, the 8 sets of parameters are read into RAM. Each set of parameters occupies 16 bytes, including 2 bytes for angle, 2 bytes for color temperature, 2 bytes for illumination, 4 bytes for compensation coefficient, and 6 bytes for reserved parameters. If the verification does not match, control unit 1 controls the yellow LED of fault alarm module 7 to stay on and uploads the parameter error fault through remote communication module 6. Then, it reads the compensation coefficient of light parameter calibration module 11. After compensation is completed, it initializes each interface. S3, the light control switch of detection unit 5 collects light intensity, the temperature sensor collects temperature, and control unit 1 sends measurement commands and reads light intensity and temperature data; control unit 1 collects the output level of sensing module 10, and determines that when the light intensity is >100 lux for 3 consecutive times, it is daytime, control unit 1 controls LED branch group 2 to turn off, and sends a sleep command to sensing module 10; when the light intensity is <100 lux for 3 consecutive times, it is nighttime, control unit 1 sends a wake-up command to sensing module 10, when the level is low for 3 consecutive times, it retrieves the parameters of the target illumination of the current level, calculates the PWM duty cycle to control LED branch group 2 to enter low brightness mode; when the level is high for 3 consecutive times, it controls LED branch group 2 to light up; at the same time, control unit 1 controls the fan of heat dissipation enhancement module 8 according to the temperature data of detection unit 5, when the temperature is >60℃, the fan is started; when the temperature is <60℃, the PD3 pin outputs a low level to turn off the fan; S4. Control unit 1 monitors local DIP switches and remote commands. The 3 pins of the local DIP switches correspond to 8 positions. The MCU reads the pin levels every 100ms. For example, when PA0=1, PA1=1, PA2=0 corresponding to position 4, it retrieves the parameters for position 4 from the pre-stored parameter area: angle 65°, color temperature 4500K, and illumination 1000 lux. In remote commands, the remote platform sends parameter adjustment instructions. The remote communication module 6 receives these instructions and transmits them to control unit 1. The MCU verifies the validity of the instructions using CRC8. If the verification passes, the remote parameters are used preferentially. Simultaneously, control unit 1 reads the historical compensation coefficients from the light parameter calibration module 11 and corrects the target parameters. S5, Control Unit 1 is analyzed according to the corrected parameters; in the angle analysis, 65° corresponds to a brightness ratio of 50%:50% for the large angle branch C1, W1 and the small angle branch C2, W2. The total current reference value is equal to the corrected illumination ratio to the preset illumination. The total current for the large angle is the total current multiplied by the large angle brightness ratio, and the total current for the small angle is the total current multiplied by the small angle brightness ratio; in the color temperature analysis, the current of each LED is obtained by linear interpolation through the pre-stored color temperature ratio reference table; in the duty cycle calculation, the maximum current of the MOS transistor of the execution unit 4 corresponds to a PWM duty cycle of 100%, and the output intensity can be adjusted according to the PWM duty cycle.

[0032] S6. Control unit 1 outputs a PWM signal, which is transmitted to the gate of the MOS transistor in execution unit 4. The MOS transistor adjusts its drain current according to the PWM signal, so that C1, C2, W1, and W2 can stably output the set current. The light rays from C1 and W1 are refracted by the large-angle light packet of the lens module, and the light rays from C2 and W2 are refracted by the small-angle light packet. The two light rays are superimposed to form the target emission angle, thus completing the angle adjustment. S7. Execution unit 4 collects the current of each LED, converts the current signal into a voltage signal and amplifies it, and then inputs it into control unit 1. The MCU compares the actual current with the corrected target current. If the deviation is >5%, the PWM duty cycle of the corresponding MOS transistor is adjusted until the deviation of all branch currents is <5%, thus completing the color temperature adjustment. S8, the current control module of the execution unit 4 summarizes the current of the four LEDs and obtains the actual value of the total current; the control unit 1 calculates the actual illumination and the correction target, and starts PID regulation to complete the illumination intensity adjustment.

[0033] S9. In normal brightness mode at night, control unit 1 reads the signal from sensing module 10; when no target is detected for 5 consecutive times, it calculates the low brightness parameter and controls LED branch group 2 to enter low brightness mode; when a target is detected again, normal brightness is restored; at the same time, MCU continuously monitors the temperature data of detection unit 5, and starts the fan of heat dissipation enhancement module 8 when the temperature is >60℃, and turns off the fan when the temperature is <60℃. S10, the energy consumption monitoring module 9 transmits voltage and current data to the control unit 1 every 0.5s. The MCU calculates the real-time power consumption and stores it temporarily. The cumulative energy consumption is summarized every hour. At 0:00 every day, the cumulative energy consumption of the day for 24 hours is summarized and uploaded to the remote platform through the remote communication module 6. After the remote platform confirms the feedback, the MCU clears the energy consumption data for the day. S11. Every 30 days, control unit 1 shuts down LED branch group 2 for 30 seconds and collects ambient light intensity through light parameter calibration module 11. If the ambient light intensity is <10 lux, control LED branch group 2 to light up according to the parameters of level 1. After 5 seconds, collect the actual color temperature and illumination. MCU calculates and stores the compensation coefficient and updates the current distribution logic of all levels. If the ambient light intensity is >10 lux, the calibration time is extended by 1 hour. If the condition is not met for 3 consecutive hours, a fault is reported and the historical compensation coefficient is maintained. S12. The system monitors the status of each module in real time and handles faults according to priority: Safety faults are the highest priority: when the current of LED branch group 2 is detected to be >1.5A, i.e. short circuit, the MCU immediately cuts off the power supply to LED branch group 2, controls the buzzer of the fault alarm module 7 to sound continuously and the red LED to stay on, and uploads the severe fault code through the remote communication module 6; when the surge protection module 12 fails, the fault code is recorded and the same alarm action is triggered, and the mains power input is cut off at the same time. Functional faults are of medium priority: When the optical parameter calibration module 11 fails to meet the calibration standard for 3 consecutive hours, a medium fault code is recorded, and the buzzer of the fault alarm module 7 is controlled to sound intermittently and the yellow LED to flash; when the energy consumption monitoring module 9 detects a sudden increase in energy consumption of >20%, a fault code is recorded and the same alarm action is triggered. Minor faults are of low priority: if the sensing module 10 is falsely triggered more than 10 times within 1 minute, a minor fault code is recorded, and only the yellow LED of the fault alarm module 7 remains constantly lit; All fault codes are stored in the fault log area. After the fault is cleared, the MCU controls the fault alarm module 7 to stop operating and uploads the fault clearance signal through the remote communication module 6.

[0034] The above embodiments are merely preferred technical solutions of the present invention and should not be considered as limitations on the present invention. The scope of protection of the present invention should be limited to the technical solutions described in the claims, including equivalent substitutions of the technical features described in the claims. That is, equivalent substitutions and improvements within this scope are also within the scope of protection of the present invention.

Claims

1. An optical angle adjustable illumination system, characterized in that, The application relates to a multi-angle light-emitting diode (LED) lamp, which comprises a control unit, an LED branch group, a power module and an execution unit. The control unit comprises a dial switch and an MCU, the dial switch adopts a multi-gear dial structure, each gear pre-stores angle, color temperature and light intensity combination parameters calibrated by light, and is used for receiving an adjusting instruction; The MCU is used for analyzing signals of each module, receiving instruction data, state feedback such as fault alarm and generating a control instruction; The LED branch group comprises cold color LEDs, warm color LEDs and a lens, the lens is integrally formed with a large-angle light package and a small-angle light package, the large-angle light package corresponds to two paths of different color temperature LEDs, and the irradiation angle is an obtuse angle; the small-angle light package corresponds to two paths of different color temperature LEDs, and the irradiation angle is an acute angle; without moving the lens, any intermediate angle can be synthesized by adjusting the brightness proportion of the LED branch. The power module selects a switching power supply to provide stable power supply for each module of the system; The execution unit adopts a MOS tube array, receives a control signal output by the MCU, adjusts the current on-off and the current size of the LED branch, and realizes brightness proportion adjustment of each branch. The application further comprises a detection unit.

2. An optical angle adjustable illumination system according to claim 1, characterized in that: The detection unit comprises a light control switch and a temperature sensor; the light control switch is used for collecting ambient light intensity, judging a day and night mode and avoiding daytime false triggering; The temperature sensor is used for detecting temperature in real time and feeding back to the MCU. The application further comprises a heat dissipation enhancement module.

3. An optical angle adjustable illumination system according to claim 1, characterized in that: The heat dissipation enhancement module comprises heat dissipation fins and a fan; the heat dissipation fins are used for receiving heat conducted by the heat radiator of the LED branch group; when the temperature sensor of the detection unit detects that the temperature of the heat radiator exceeds a standard, the MCU in the control unit controls the fan to start and accelerate heat dissipation. The application further comprises a sensing module.

4. An optical angle adjustable illumination system according to claim 1, characterized in that: The sensing module detects a moving target in a detection range by emitting and receiving specific signals, outputs a signal to the control unit when the target is detected, triggers the system to switch to normal brightness, and maintains a low brightness mode when there is no target. The sensing module cooperates with the light control switch of the detection unit to assist the control unit in judging a brightness adjustment logic in the day and night mode. The application further comprises a light parameter calibration module.

5. An optical angle adjustable illumination system according to claim 1, characterized in that: The light parameter calibration module comprises a light sensor and is used for starting a calibration process periodically. The light parameter calibration module collects ambient light intensity without interference, actual color temperature and light intensity of each gear when the LED branch group is lighted; the control unit calculates compensation coefficients to update current distribution logic and correct parameter deviation of the LED branch group. The application further comprises an energy consumption monitoring module.

6. An optical angle adjustable illumination system according to claim 1, characterized in that: The energy consumption monitoring module adopts a current-voltage sampling chip, is used for collecting voltage and current signals output by the power module, converts the signals into digital signals and then transmits the digital signals to the control unit to calculate real-time power consumption and cumulative energy consumption and troubleshoot circuit abnormities. The application further comprises a remote communication module.

7. An optical angle adjustable illumination system according to claim 1, characterized in that: The remote communication module automatically connects a preset network, establishes a communication link with a remote monitoring platform, receives a parameter adjusting instruction issued by the remote monitoring platform, transmits the instruction to the control unit, and transmits energy consumption data, fault information and light parameter data of the system to the remote monitoring platform. The application further comprises a fault alarm module and a lightning protection module.

8. An optical angle adjustable illumination system according to claim 1, characterized in that: The fault alarm module comprises a buzzer and an indicator light, and is connected with the control unit; the control unit outputs a control signal to trigger the buzzer to sound and / or the LED to turn on and off according to a fault type. ​ The lightning protection module includes a pressure sensitive resistor and a gas discharge tube, which are connected in parallel to the power module; when lightning or power grid surge is encountered, the pressure sensitive resistor breaks down rapidly to guide the surge current into the ground, and the gas discharge tube acts synchronously to suppress the residual surge, while outputting a signal to the control unit to trigger the fault alarm module to alarm.

9. A control method for an optical angle adjustable illumination system according to any one of claims 1 to 8, characterized in that, The method comprises the following steps: S1, the power module is connected and outputs stable voltage, the lightning protection, remote communication and fault alarm modules are powered on synchronously; the lightning protection module is self-checked and ready, the remote communication module establishes platform connection and feeds back online state, and the fault alarm module is self-checked and confirmed to be normal; S2, the MCU waits for stable power supply, reads preset parameters and historical calibration coefficients, initializes working modes of each interface and module; after completion, the system is ready state is fed back to the remote platform; S3, the light control switch collects ambient light intensity, the temperature sensor collects radiator temperature, and the human body sensing module detects the target; the MCU comprehensively judges the day and night mode: in the daytime, it enters low-power standby, and at night, it is switched to low brightness or normal adjustment state according to whether there is a target, and the fan is started and stopped according to temperature control; S4, the gear is switched by operating the dial switch, the gear signal is transmitted to the MCU, the MCU identifies the gear through level logic, and the corresponding target parameter is called; the remote platform sends a parameter adjustment instruction, and if the verification is passed, the remote instruction is preferentially analyzed, and the dial signal is ignored; after the analysis is completed, the MCU reads the compensation coefficient of the light parameter calibration module, and the target parameter is corrected; S5, parameter analysis and PWM calculation: the MCU determines the LED branch brightness ratio, color temperature current ratio and total current reference according to the corrected parameters, and calculates the PWM duty cycle of each branch MOS tube; S6, the MCU outputs the PWM signal to control the MOS tube, and adjusts the current and brightness of each LED branch; the light passes through different light packages of the lens module and is superimposed to synthesize the target optical angle; S7, the sampling circuit collects the current of each LED branch in real time and feeds back to the MCU, compares the actual current with the target current ratio, adjusts the PWM duty cycle until the deviation meets the requirements, and ensures the stability of the color temperature; S8, the current control module collects the LED branch current and feeds back to the MCU, calculates the actual light intensity, compares it with the target value, and then adjusts the PWM duty cycle to correct the total current, so as to ensure that the light intensity meets the requirements; S9, in the normal brightness mode at night, the MCU continuously monitors the sensing signal, and switches to low brightness after timeout without target; when the target is detected again, the normal brightness is quickly restored, and the fan is started and stopped according to the temperature data; S10, the energy consumption monitoring module collects data regularly, the MCU calculates and stores the energy consumption and uploads it to the remote platform, and clears the daily storage data; S11, the MCU regularly wakes up the system to start calibration, collects ambient light intensity and actual LED light parameters, calculates compensation coefficients and updates parameter configuration.

10. The control method of an optical angle adjustable lighting system according to claim 9, wherein, Further comprising the following steps: S12, the control unit monitors the state of each module in real time, and handles faults according to priority: Safety fault handling: When the LED branch group 2 current is greater than the preset short-circuit current or the lightning protection module fails, the MCU immediately cuts off the power supply of the LED branch group, controls the fault alarm module to trigger a safety alarm, and uploads the severe fault code through the remote communication module; Function fault handling: When the light parameter calibration module continuously fails to meet the calibration standards, or the energy consumption monitoring module detects that the short-term increase in energy consumption exceeds the preset energy consumption, the MCU records the moderate fault code, controls the fault alarm module to trigger a function alarm, and uploads the moderate fault code through the remote communication module; Minor fault handling: When the induction module is triggered multiple times in a short time, the MCU records the minor fault code, and the fault alarm module triggers a minor alarm; All fault codes are stored in the control unit. After the fault is resolved, the MCU controls the fault alarm module to stop alarming, and uploads the fault resolution signal through the remote communication module.

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