Control method of intelligent table-board small street lamp

Abstract

The invention discloses a control method of an intelligent table-board small street lamp, and relates to the technical field of lighting equipment. The method comprises the following steps: step 1, voice-infrared remote control cooperative control; the method comprises the following steps: step 1-1, signal acquisition: a microphone in a signal acquisition area of a control mainboard acquires voice instructions within 5 meters in real time, and an HS0038 infrared receiving head acquires infrared remote control instructions within 8 meters; and step 1-2, instruction priority judgment. Through a voice-infrared remote control cooperative control mode, an instruction priority judgment rule is set, instruction conflicts are avoided, and the response speed is increased; through smooth dimming and color modulation control, gradual dimming and low-brightness color temperature switching are realized, the user experience pain point of existing step-type adjustment is solved, the user experience is improved, and additional hardware cost is not needed due to implementation based on an existing PT4115 chip; by providing a fault self-diagnosis and mode switching method, the equipment stability is improved on the basis of a low-cost structure, the blank that the metal intelligent small street lamp has no protection mechanism is filled, and the service life of the equipment is prolonged.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of lighting devices, and in particular to a control method of an intelligent table-top small road lamp. BACKGROUND

[0002] The table-top small road lamp is a lighting tool specially designed for long table, workbench, office table and other small range table surfaces. Its core value lies in solving the problems of insufficient local lighting, uneven light and easy to cause visual fatigue, and it is especially suitable for long time eye use scenes such as children learning and adult office work.

[0003] The current table-top small road lamp has obvious technical pain points in the control method, and it is difficult to meet the comprehensive use demand. The existing intelligent small road lamp mainly supports single voice or remote control, and when the double control modes coexist, the instruction conflict may occur, such as triggering "turn on the light" and "turn off the light" at the same time, the response is chaotic, and the coordination is poor. The brightness / color temperature adjustment is mainly "step type", the adjustment precision is low, and the user experience is poor. When the main board or light source is abnormal, there is no automatic protection or fault prompt, which may cause damage to the components.

[0004] In summary, the existing technology cannot simultaneously achieve the goals of "wide illumination + double control coordination + precise adjustment". Therefore, we propose a control method of an intelligent table-top small road lamp to solve the problems mentioned above.

[0005] The above information disclosed in the background of the application is only used to increase the understanding of the background of the application, and therefore, it can include prior art known by those skilled in the art. SUMMARY

[0006] The purpose of the present application is to provide a control method of an intelligent table-top small road lamp to solve the problems in the prior art.

[0007] In order to achieve the above purpose, the present application provides the following technical scheme: a control method of an intelligent table-top small road lamp, comprising the following steps:

[0008] Step 1: voice-infrared remote control coordination

[0009] Step 1-1, signal acquisition: the microphone of the control mainboard signal acquisition area collects the voice command within 5 meters in real time, and the HS0038 infrared receiver collects the infrared remote control command within 8 meters;

[0010] Step 1-2, instruction priority determination: set the emergency instruction priority rule: the same instruction is executed only once; for conflicting instructions, the later triggered instruction is executed with a delay of 0.2 seconds; for dimming / color adjusting instructions, they are executed in parallel;

[0011] Steps 1-3, Signal Decoding and Output: After the LD3320 voice recognition chip recognizes the voice command and the HS0038 decodes the remote control command, both output TTL level control signals to the PT4115 dimming driver chip.

[0012] Step 2: Smooth dimming and color adjustment control

[0013] Step 2-1, Current reference setting: The PT4115 dimming driver chip has 3 levels of brightness reference current and 2 levels of color temperature reference pre-stored;

[0014] Step 2-2, Gradual Adjustment Algorithm: After receiving the dimming / color adjustment command, the PT4115 dimming driver chip uses a PWM signal to achieve gradual current adjustment.

[0015] Brightness adjustment: The current changes linearly from the current to the target current at a rate of 0.1A / 0.3 seconds to avoid flickering;

[0016] Color temperature adjustment: When switching between warm light and white light, first reduce the current of the current light source board to 0.1A, then switch the type of driving LED beads, and finally restore the target brightness;

[0017] Step 3: Fault Self-Diagnosis and Protection

[0018] Step 3-1, Real-time monitoring: The control motherboard monitors the current of the light source board through the current detection circuit and monitors the temperature through the temperature sensor attached to the light source board;

[0019] Step 3-2, Fault Judgment and Response: If the current is determined to be abnormal, the PT4115 dimming driver chip immediately cuts off the output and attempts to restart after 3 seconds, only once. If it fails, it outputs a "current fault" code and flashes the LED twice to indicate this. If the temperature is determined to be too high, the PT4115 dimming driver chip reduces the current to 0.5A and resumes normal output when the temperature drops below 60℃. If there is a communication failure, it automatically switches to "pure infrared remote control" mode to ensure that basic functions are available.

[0020] Preferably, in step 2-1, the PT4115 dimming driver chip has three pre-stored brightness reference currents of 0.2A, 1A, and 2A, respectively, and two color temperature references of 3000K for warm light, which drives only warm light LEDs, and 6500K for white light, which drives only white light LEDs.

[0021] Preferably, in step 3-1, the current detection circuit is a 1Ω sampling resistor connected in series.

[0022] Preferably, in step 3-1, the current of the light source board is normally within the range of 0.2-2A, and the temperature is normally ≤65℃.

[0023] Preferably, in step 3-2, the current is abnormal (>2.2A or <0.1A) and the temperature is excessive (>65℃).

[0024] Preferably, the lamp head of the intelligent tabletop street light has three chambers: a main board chamber, a light source chamber, and a slot chamber. The main board chamber contains the control main board, the light source chamber contains the light source board, and the slot chamber contains a light-transmitting component.

[0025] Compared with existing technologies, the present invention has the following advantages: The present invention uses a voice-infrared remote control collaborative control method, sets command priority judgment rules to avoid command conflicts, and improves response speed; through smooth dimming and color adjustment control, it achieves gradual dimming and low-brightness color temperature switching, solving the user experience pain points of existing step-like adjustments and improving user experience, and is based on the existing PT4115 chip, requiring no additional hardware costs; by proposing a fault self-diagnosis and mode switching method, it improves equipment stability on a low-cost basis, fills the gap of no protection mechanism in metal smart streetlights, and extends the service life of the equipment. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this invention. For those skilled in the art, other drawings can be obtained based on these drawings.

[0027] Figure 1 This is a structural block diagram of the intelligent tabletop street light control motherboard of the present invention;

[0028] Figure 2 This is a block diagram of the voice-remote control collaborative logic of the present invention;

[0029] Figure 3 This is a flowchart of the fault self-diagnosis process of the present invention;

[0030] Figure 4 This is a cross-sectional view of the three-layer chamber of the intelligent countertop street light head of the present invention. Detailed Implementation

[0031] To enable those skilled in the art to better understand the technical solutions of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0032] Example 1:

[0033] A control method for a smart countertop street light includes the following steps:

[0034] Step 1: Voice-Infrared Remote Control Collaborative Control

[0035] Step 1-1: Signal Acquisition

[0036] The microphone in the control motherboard signal acquisition area collects voice commands within 5 meters in real time, such as "turn on the light / adjust brightness / warm light". The HS0038 infrared receiver collects infrared remote control commands within 8 meters, such as "on / off / brightness ± / color temperature ±".

[0037] Step 1-2: Instruction Priority Determination

[0038] Set the "emergency command priority" rule: ① The same command will only be executed once, such as triggering "turn off the lights" at the same time; ② In case of conflicting commands, the "later triggered command" will prevail, such as the voice command "turn on the lights" and the remote control command "turn off the lights", which will be executed with a delay of 0.2 seconds to avoid instantaneous conflict; ③ Dimming / color adjustment commands will be executed in parallel, such as "brighten" and "warmen", with brightness and color temperature adjusted independently.

[0039] Steps 1-3: Signal Decoding and Output

[0040] After recognizing voice commands, the LD3320 voice recognition chip and the HS0038 decode remote control commands, both output TTL level control signals to the PT4115 dimming driver chip.

[0041] Step 2: Smooth dimming and color adjustment control

[0042] Step 2-1: Current reference setting

[0043] The PT4115 dimming driver chip has three pre-stored brightness reference currents and two color temperature references. The three brightness reference currents are 0.2A, 1A, and 2A, respectively, and the two color temperature references are 3000K for warm light, which drives only warm light LEDs, and 6500K for white light, which drives only white light LEDs.

[0044] Step 2-2: Gradual Adjustment Algorithm

[0045] After receiving dimming / color adjustment commands, the PT4115 dimming driver chip uses PWM signals to achieve "gradual current adjustment":

[0046] Brightness adjustment: The current changes linearly from the current to the target current at a rate of 0.1A / 0.3 seconds to avoid flickering. For example, from 200lm to 1000lm, it takes 2.4 seconds.

[0047] Color temperature adjustment: When switching between warm light and white light, first reduce the current of the current light source board to 0.1A to achieve a low brightness transition, then switch the type of driving LED beads, and finally restore the target brightness to avoid sudden color temperature changes that are glaring.

[0048] Step 3: Fault Self-Diagnosis and Protection

[0049] Step 3-1: Real-time monitoring

[0050] The control board monitors the current of the light source board through a current detection circuit, which consists of a 1Ω sampling resistor in series. The temperature is monitored by a temperature sensor attached to the light source board. The normal current range for the light source board is 0.2-2A, and the normal temperature is ≤65℃.

[0051] Step 3-2: Fault Diagnosis and Response

[0052] If the current is abnormal (>2.2A or <0.1A), the PT4115 dimming driver chip will immediately cut off the output and attempt to restart after 3 seconds. This will only happen once. If it fails, it will output a "current fault" code and indicate this by flashing an LED twice.

[0053] If the temperature exceeds 65℃, the PT4115 dimming driver chip reduces the current to 0.5A to achieve power reduction protection. Normal output is restored when the temperature drops below 60℃.

[0054] In case of communication failure, such as no response from the LD3320, it will automatically switch to "pure infrared remote control" mode to ensure that basic functions are available.

[0055] Please see Figure 4 The lamp head 1 of the intelligent tabletop street light has three chambers: a main board chamber 101, a light source chamber 102, and a card slot chamber 103. The main board chamber 101 contains the control main board, the light source chamber 102 contains the light source board, and the card slot chamber 103 contains the light-transmitting component.

[0056] Please see Figure 1 The following is a description of the core components controlling the motherboard:

[0057] 1. Signal Acquisition Area: Responsible for receiving user commands.

[0058] Microphone: Collects user voice commands within 5 meters.

[0059] HS0038 Infrared Receiver: Receives commands from infrared remote controls within 8 meters.

[0060] 2. Main control and processing core:

[0061] The LD3320 voice recognition chip is specifically designed to process microphone signals, recognize voice commands, and transmit the results to the main control MCU.

[0062] Main control MCU: responsible for receiving instructions from LD3320 and HS0038, executing the "instruction priority determination" rule, generating PWM control signals for PT4115 chip, and executing fault diagnosis and protection logic.

[0063] 3. Drive and Output Area:

[0064] PT4115 dimming driver chip: Receives PWM signals from the MCU and precisely controls the current and voltage output to the light source board to achieve dimming and color adjustment.

[0065] Current detection circuit: Monitors the current of the light source board in real time through a 1Ω sampling resistor and feeds it back to the MCU.

[0066] Temperature sensor: Mounted close to the light source board, it monitors the temperature in real time and feeds the feedback to the MCU.

[0067] 4. Power Management:

[0068] It provides stable and reliable 5V and 3.3V operating voltages to various chips and modules on the motherboard.

[0069] The following are the tests and results of the control method of the present invention.

[0070] 1. Collaborative control test:

[0071] Simultaneously triggering the voice command to "brighten" and the remote control command to "dim," the device executes the command (responds correctly);

[0072] It can issue 50 voice commands continuously within 5 meters with a false recognition rate of 2.8% and a response time of 0.6-0.8 seconds.

[0073] 2. Smooth dimming test:

[0074] The brightness increased from 200lm to 2000lm in 2.4 seconds with no flicker and no current jump detected by the oscilloscope.

[0075] The color temperature transitions smoothly from 3000K to 6500K, with no subjective glare.

[0076] 3. Fault testing:

[0077] Short circuit to light source board (current > 2.2A): The device is immediately powered off, and restarting fails after 3 seconds. The LED flashes twice, which is consistent with the fault logic.

[0078] When the light source board is heated to 70°C, the current automatically drops to 0.5A. After the temperature drops to 60°C, it recovers to 2A, proving that the protection is effective.

[0079] The foregoing has only described certain exemplary embodiments of the present invention by way of illustration. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the foregoing drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A control method for an intelligent countertop street light, characterized in that, Includes the following steps: Step 1: Voice-Infrared Remote Control Collaborative Control Step 1-1, Signal Acquisition: The microphone in the signal acquisition area of ​​the control motherboard acquires voice commands within 5 meters in real time, and the HS0038 infrared receiver acquires infrared remote control commands within 8 meters. Step 1-2, Command Priority Determination: Set priority rules for urgent commands: the same command is executed only once; for conflicting commands, the later triggered command takes precedence and is executed after a 0.2-second delay; dimming / color adjustment commands are executed in parallel; Steps 1-3, Signal Decoding and Output: After the LD3320 voice recognition chip recognizes the voice command and the HS0038 decodes the remote control command, both output TTL level control signals to the PT4115 dimming driver chip. Step 2: Smooth dimming and color adjustment control Step 2-1, Current reference setting: The PT4115 dimming driver chip has 3 levels of brightness reference current and 2 levels of color temperature reference pre-stored; Step 2-2, Gradient Adjustment Algorithm: After receiving the dimming / color adjustment command, the PT4115 dimming driver chip uses a PWM signal to achieve gradual current adjustment. Brightness adjustment: The current changes linearly from the current to the target current at a rate of 0.1A / 0.3 seconds to avoid flickering; Color temperature adjustment: When switching between warm light and white light, first reduce the current of the current light source board to 0.1A, then switch the type of driving LED beads, and finally restore the target brightness; Step 3: Fault Self-Diagnosis and Protection Step 3-1, Real-time monitoring: The control motherboard monitors the current of the light source board through the current detection circuit and monitors the temperature through the temperature sensor attached to the light source board; Step 3-2, Fault Judgment and Response: If the current is determined to be abnormal, the PT4115 dimming driver chip immediately cuts off the output and attempts to restart after 3 seconds, only once. If it fails, it outputs a "current fault" code and flashes the LED twice to indicate this. If the temperature is determined to be too high, the PT4115 dimming driver chip reduces the current to 0.5A and restores normal output when the temperature drops below 60℃. If there is a communication failure, it automatically switches to "pure infrared remote control" mode to ensure that basic functions are available.

2. The control method for an intelligent tabletop street light according to claim 1, characterized in that: In step 2-1, the PT4115 dimming driver chip has three pre-stored brightness reference currents of 0.2A, 1A, and 2A, respectively, and two color temperature references of 3000K for warm light, which drives only warm light LEDs, and 6500K for white light, which drives only white light LEDs.

3. The control method for an intelligent tabletop street light according to claim 1, characterized in that: In step 3-1, the current detection circuit is a 1Ω sampling resistor connected in series.

4. The control method for an intelligent tabletop street light according to claim 1, characterized in that: In step 3-1, the normal range of the light source board current is 0.2-2A, and the normal temperature is ≤65℃.

5. The control method for an intelligent tabletop street light according to claim 4, characterized in that: In step 3-2, an abnormal current is defined as >2.2A or <0.1A, and an overheating temperature is defined as >65℃.

6. The control method for an intelligent countertop street light according to any one of claims 1-5, characterized in that: The lamp head (1) of the intelligent tabletop street light has three chambers, namely the main board chamber (101), the light source chamber (102) and the card slot chamber (103). The main board chamber (101) is equipped with the control main board, the light source chamber (102) is equipped with the light source board, and the card slot chamber (103) is equipped with a light-transmitting component.

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