CN-122028257-A - Intelligent control method for eye training lamp

CN122028257ACN 122028257 ACN122028257 ACN 122028257ACN-122028257-A

Abstract

The invention discloses an intelligent control method of an eye training lamp, which belongs to the technical field of LED illumination driving control and is realized based on an isolation constant voltage module, a DC-DC voltage reduction constant current module, a control module, a sensor module and an LED light source module, the conversion from commercial power to stable direct current voltage is completed through an AC-DC high PF isolation voltage reduction constant voltage circuit, the whole-course stroboflash-free high-precision constant current driving is realized by adopting a double-path voltage reduction constant current module, the acquisition of environmental signals, the data processing and the output of driving signals are completed by taking an MCU as a core, the accurate adjustment of the brightness and the color temperature of a lamp and the cooperative control of a plurality of modules are realized, the remote control expansion is compatible, the stroboflash hidden danger is thoroughly eliminated, the stable operation of the whole working condition of the lamp is ensured, and a safe and reliable intelligent electric control scheme is provided for the eye training lamp.

Inventors

Xue shengxing
LEI FEI
KANG HOUSHENG

Assignees

广东磊石山科技集团有限公司

Dates

Publication Date: 20260512
Application Date: 20260325

Claims (8)

1. The intelligent eye training lamp control method is characterized by being realized based on an eye training lamp system comprising an isolation constant voltage module, at least one path of DC-DC voltage reduction constant current module, a control module, a sensor module and an LED light source module, and comprises the following steps: S1, isolation constant voltage power supply control, namely converting 220V alternating current through an AC-DC high PF isolation step-down constant voltage circuit, outputting stable direct current voltage, and providing direct current power supply for a later-stage circuit; s2, constant current driving pre-configuration, namely building a constant current driving circuit of the LED light source through a step-down constant current module, and setting a dimming parameter, a constant current precision parameter and a strobe-free control parameter of the driving circuit; S3, collecting and processing signals, namely collecting environmental parameters and lamp operation parameters in real time through a sensor module, transmitting the collected signals to an MCU main control unit of a control module, and completing comparison, operation and processing of the signals through the MCU; s4, driving and outputting control, namely, the MCU outputs a corresponding PWM dimming signal to a dimming control end of the buck constant current module according to the processed signal, and adjusts driving current output to the LED light source module by controlling on-off of an MOS tube in the buck constant current module so as to realize the brightness and color temperature adjustment control of the LED light source; And S5, full-working-condition stable control, namely ensuring that the lamp keeps stable current output under any brightness and color temperature setting through cooperative matching of the constant-current driving power supply, the control module and the LED light source module, and realizing whole-course strobe-free driving.
2. The intelligent control method of the eye training lamp according to claim 1, wherein in the step S1, an AC-DC high PF isolation buck constant voltage circuit is a single-stage primary side feedback control circuit built by using an OB5686 main chip, a 220VAC voltage is converted and then a stable direct current voltage with a constant voltage of 60Vdc is output, an input THD value is controlled to be less than 10%, the output voltage is controlled by the ratio of the upper resistor to the lower resistor of an FB pin of the OB5686 chip, and the isolation constant voltage module circuit adopts an electrolytic capacitor with a service life of not less than 10000 hours.
3. The intelligent control method of the eye training lamp according to claim 1, wherein in the step S2, the step-down constant current module is built by using an H5227Y chip, a dimming depth is set to 10000:1 dimming ratio by adopting an analog dimming mode, dimming resolution exceeds 100:1, output current constant current precision is less than or equal to +/-3%, and load adjustment rate is < +/-1%.
4. The intelligent control method of the eye training lamp according to claim 1, wherein in the step S2, two independent DC-DC step-down constant current module circuits are adopted to respectively control the light sources of the lamp beads with different color temperatures in the LED light source module, so as to realize independent driving and adjustment control of the two lamp beads.
5. The intelligent control method of the eye training lamp according to claim 1, wherein in the step S3, the sensor module comprises an ambient light sensor for collecting light intensity signals of the surrounding environment in real time, the control module is further connected with a key module and a display module, the key module is used for receiving switching and mode switching instructions of a user, and the display module is used for displaying the running state of the lamp.
6. The intelligent control method of the eye training lamp according to claim 3, wherein in the step S4, DIM pins of the H5227Y chip are dimming signal pins, the PWM dimming signal output by the MCU is received, after the internal feedback processing of the chip, a driving signal is output to the MOS transistor by DRV pins, and a constant current detection resistor is arranged in the step-down constant current module, and the output current signal is fed back to the H5227Y chip to realize closed-loop constant current control.
7. The intelligent control method of the eye training lamp according to claim 1, wherein one path of DC-DC voltage-reducing constant current module is reduced, a color temperature adjusting module is additionally arranged, and the MCU realizes the brightness and color temperature adjusting control of the LED light source by simultaneously controlling the DC-DC voltage-reducing constant current module and the color temperature adjusting module.
8. The intelligent control method of the eye training lamp according to claim 1, wherein the control module is further connected with a communication module, the communication module adopts a Bluetooth or Wi-Fi communication mode, and the MCU receives a remote control instruction of the terminal equipment to complete remote driving adjustment control of the lamp.

Description

Intelligent control method for eye training lamp Technical Field The invention relates to the technical field of intelligent control and driving of LED illumination, in particular to an intelligent control method of an eye training lamp. Background With the popularization of electronic products and the increase of working and learning pressures, the problem that eyes are tired for a long time is increasingly prominent. The traditional driving control scheme of the lighting lamp has single function, limited brightness and color temperature adjusting range of output light, incapability of realizing intelligent cooperative control of multiple modules, common visual stroboscopic phenomenon, easy visual fatigue of a user and influence on eye health after long-term use, and difficulty in considering electrical isolation safety, constant current output precision and wide-range dimming stability, and incapability of meeting the use requirements of high reliability, no stroboscopic and intelligent controllability of an eye training lamp. Therefore, the intelligent control method of the eye training lamp is developed, safe, stable and stroboscopic-free LED driving control and multi-module intelligent coordination are realized, and the method has important practical significance. Disclosure of Invention The invention aims to overcome the defects of the prior art, and provides an intelligent control method for an eye training lamp, which thoroughly eliminates the stroboscopic phenomenon by isolating constant voltage power supply, double-path high-precision constant current driving and MCU multi-module cooperative control, realizes high-stability and high-reliability intelligent electric control of the eye training lamp, is compatible with the dimming control requirement of multiple scenes, and provides a safe and stable light source foundation for the eye training lamp. In order to solve the technical problems, the invention provides the technical scheme that the intelligent control method of the eye training lamp is realized based on an eye training lamp system comprising an isolation constant voltage module, at least one path of DC-DC voltage reduction constant current module, a control module, a sensor module and an LED light source module, and comprises the following steps: S1, isolation constant voltage power supply control, namely converting 220V alternating current through an AC-DC high PF isolation step-down constant voltage circuit, outputting stable direct current voltage, and providing direct current power supply for a later-stage circuit; s2, constant current driving pre-configuration, namely building a constant current driving circuit of the LED light source through a step-down constant current module, and setting a dimming parameter, a constant current precision parameter and a strobe-free control parameter of the driving circuit; S3, collecting and processing signals, namely collecting environmental parameters and lamp operation parameters in real time through a sensor module, transmitting the collected signals to an MCU main control unit of a control module, and completing comparison, operation and processing of the signals through the MCU; s4, driving and outputting control, namely, the MCU outputs a corresponding PWM dimming signal to a dimming control end of the buck constant current module according to the processed signal, and adjusts driving current output to the LED light source module by controlling on-off of an MOS tube in the buck constant current module so as to realize the brightness and color temperature adjustment control of the LED light source; And S5, full-working-condition stable control, namely ensuring that the lamp keeps stable current output under any brightness and color temperature setting through cooperative matching of the constant-current driving power supply, the control module and the LED light source module, and realizing whole-course strobe-free driving. In step S1, the AC-DC high PF isolation step-down constant voltage circuit uses OB5686 main chip to build a single-stage primary side feedback control circuit, converts 220VAC voltage to output stable DC voltage with constant voltage of 60Vdc, controls input THD value to be less than 10%, and controls output voltage by the ratio of upper and lower resistors of FB pin of OB5686 chip, wherein the circuit of the isolation constant voltage module uses electrolytic capacitor with service life not less than 10000 hours. Further, in the step S2, the step-down constant current module is built by using an H5227Y chip, and the dimming depth is set to 10000:1 dimming ratio by adopting an analog dimming mode, the dimming resolution exceeds 100:1, the output current constant current precision is less than or equal to +/-3%, and the load adjustment rate is less than +/-1%. Further, in the step S2, two independent DC-DC step-down constant current module circuits are adopted to respectively control the light sources of the lamp beads with