CN105188196A - LED track lamp with intelligent light sensing and light modulation functions - Google Patents

Abstract

The invention discloses an LED track light with intelligent light-sensing and light-adjusting functions, belonging to the technical field of LED lighting. It includes an LED track light and a circuit board; wherein, the circuit board includes a photosensitive module, a display module, a micro-processing module, a DA conversion module, a boost module and an LED constant current driver; the photosensitive module, the display module, and the DA conversion module are all compatible with The microprocessing module is connected, the DA conversion module is connected with the boost module, and the boost module is connected with the LED constant current driver; the photosensitive module and the LED constant current driver are connected with the LED track light, and the LED constant current driver is connected with the grid socket. The invention realizes an intelligent dimming LED track light with excellent heat dissipation performance, which reduces volume and improves heat dissipation effect while increasing power, saves energy and prolongs the life of the lamp; realizes intelligent dimming following the environment, and is easy for users to use It is more comfortable and convenient to get up.

Description

LED track light with intelligent photosensitive and dimming function

technical field

The invention relates to the technical field of LED lighting, in particular to an LED track light with intelligent light-sensing and light-adjusting functions.

Background technique

Intelligent lighting refers to a distributed wireless telemetry, remote control, and remote communication control system composed of computers, wireless communication data transmission, spread spectrum power carrier communication technology, computer intelligent information processing, and energy-saving electrical control. intelligent control. It has functions such as intensity adjustment of light brightness, soft start of light, timing control, scene setting, etc., and achieves the characteristics of safety, energy saving, comfort and high efficiency.

Looking at the LED intelligent control methods can be divided into four categories: three-segment or four-segment switch control, remote control control, mobile phone control, and computer control. For example, the three-stage switching power supply has three gears, which are 100% brightness, 40% brightness, and 10% brightness; remote control means that users can control the brightness and color temperature of the LED power supply through the remote control; the mainstream of mobile phone control is to use wifi. Control, the range that can be controlled can only be within the range of the router; for computer control, the computer software reads the working status of each LED power supply, and can manage the group control, scene control and timing control of the LED power supply in real time, suitable for hotels , Lighting management of shopping malls.

All in all, the current smart lighting still has the following problems:

1) The human-computer interaction is poor, and only a few products realize the display of the lighting status of the lamp on the human-computer interaction interface such as mobile phones or computers, so as to realize manual personalized control;

2) The effect of intelligent dimming is poor, and it cannot achieve the effect of intelligent dimming without manual operation by using automatic light sensing and software algorithms, and the light intensity cannot be changed in real time according to the brightness of the environment.

Contents of the invention

The purpose of the present invention is to provide an LED track light with intelligent light-sensing and light-adjusting functions for the deficiencies of the prior art. The light can realize intelligent light-adjustment following the environment, making it more comfortable and convenient for users to use.

In order to achieve the above purpose, the technical solution adopted by the present invention is: an LED track light with intelligent light-sensing and dimming functions, including an LED track light and a circuit board; wherein, the circuit board includes a photosensitive module, a display module, a micro Processing module, DA conversion module, boost module and LED constant current driver, etc.; photosensitive module, display module, DA conversion module are all connected to the micro-processing module, DA conversion module is connected to the boost module, and the boost module is connected to the LED constant current driver Connected; the photosensitive module and LED constant current driver are connected to the LED track light, and the LED constant current driver is connected to the grid socket; the photosensitive module is used to detect the light intensity of the environment where the LED track light is located; the display module is used to monitor the current ambient light intensity. and the display of LED track light intensity; the micro-processing module is used to read the light intensity signal of the photosensitive module and convert the light intensity signal into a digital dimming signal; the DA conversion module converts the digital dimming signal output by the micro-processing module Converted into an analog voltage signal; the boost module is used to amplify the analog voltage signal; the LED constant current driver receives the amplified analog voltage signal of the boost module, and outputs the LED drive current through the linear input voltage-output current relationship.

Further, the micro-processing module includes a single-chip microcomputer, a crystal oscillator, non-polar capacitors C1 and C2, a polar capacitor C3, a reset button Key, and a resistor R1; wherein, one end of the crystal oscillator is connected to one end of the non-polar capacitor C1 and connected to the single-chip microcomputer The other end of the crystal oscillator is connected to one end of the non-polar capacitor C2 and then connected to the second clock input pin of the microcontroller; the other ends of the non-polar capacitors C1 and C2 are grounded; the reset button Key One end of the key is connected to the positive pole of the polarity capacitor C3 and then connected to the power pin of the single-chip microcomputer; the other end of the reset button Key is connected to the negative pole of the polarity capacitor C3 and then connected to the reset pin of the single-chip microcomputer; one end of the resistor R1 is connected to the reset pin of the single-chip microcomputer Pins are connected, and the other end of resistor R1 is grounded.

Further, the photosensitive module is composed of four identical photosensor chips U1; the voltage input terminals of the four photosensor chips U1 are connected to the power supply pins of the single-chip microcomputer; the clock pins and data pins of the four photosensor chips U1 are all It is connected with different I/O pins of the microcontroller; the address pins and ground pins of the four light sensor chips U1 are all grounded.

Further, the display module includes an LCD liquid crystal display and a resistor R; one end of the resistor R is connected to the driving voltage pin of the LCD liquid crystal display, and the other end is grounded; all control pins of the LCD liquid crystal display are different from those of the single-chip microcomputer I/O pins are connected; all data pins of the LCD liquid crystal display are connected to different I/O pins of the single-chip microcomputer; the backlight power pins of the LCD liquid crystal display and the power supply pins of the LCD liquid crystal display are connected with the single-chip microcomputer The power pins of the LCD liquid crystal display are connected to the ground; the ground pin and the ground pin of the backlight of the LCD liquid crystal display are grounded.

Further, the DA conversion module and the boost module include a DA conversion chip U2 and a boost chip U3; the reference power supply pin and the power supply pin of the DA conversion chip U2 are connected to the power supply pins of the single-chip microcomputer; the DA conversion chip U2 The three address pins and ground pins are all grounded; the clock pin and data pin of the DA conversion chip U2 are respectively connected to the I/O pins of the microcontroller; the output pin of the DA conversion chip U2 is connected to the input of the boost chip U3 The pins are connected; the ground pin of the boost chip U3 is grounded; the output pin of the boost chip U3 is connected to the dimming pin of the LED constant current driver.

Compared with the prior art, the beneficial effect of the present invention is: the present invention realizes the intelligent dimming of the LED to adjust its own brightness following the change of the ambient light intensity by collecting the ambient light intensity of the LED and through the designed circuit connection, which is more energy-saving and convenient Users use; at the same time, the invention realizes an intelligent dimming LED system with excellent heat dissipation performance, which reduces volume and improves heat dissipation effect while increasing power, saves energy and prolongs the life of the lamp; realizes intelligent dimming that follows the environment, It is more comfortable and convenient for users to use.

Description of drawings

Fig. 1 is the microprocessing module circuit diagram of the present invention;

Fig. 2 is a circuit diagram of the photosensitive module of the present invention;

Fig. 3 is a circuit diagram of a display module of the present invention;

Fig. 4 is a circuit diagram of a DA conversion and boost module module of the present invention;

Figure 5 is a schematic diagram of LED track light intelligent light sensing and intelligent dimming following the environment.

Detailed ways

The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

The present invention includes an LED track light and a circuit board; wherein, the circuit board includes a photosensitive module, a display module, a microprocessing module, a DA conversion module, a boost module, and an LED constant current driver; the photosensitive module, the display module, and the DA conversion module are all It is connected with the micro-processing module, the DA conversion module is connected with the boost module, and the boost module is connected with the LED constant current driver; the photosensitive module and the LED constant current driver are connected with the LED track light, and the LED constant current driver is connected with the grid socket. The photosensitive module is used to detect the light intensity of the environment where the LED track light is located; the display module is used to display the current ambient light intensity and the LED track light intensity; the micro-processing module is used to read the light intensity signal of the photosensitive module, and The light intensity signal is converted into a digital dimming signal; the DA conversion module converts the digital dimming signal output by the micro-processing module into an analog voltage signal; the boost module is used to amplify the analog voltage signal; the LED constant current driver receives The analog voltage signal amplified by the boost module outputs the LED drive current through the linear input voltage-output current relationship; the LED track light is powered by the 220V mains through the LED constant current driver; the photosensitive module, display module, DA conversion module, The boost modules are all powered by the power pins of the microprocessor module.

As shown in Figure 1, the microprocessing module includes a single-chip microcomputer, a crystal oscillator, non-polar capacitors C1 and C2, a polar capacitor C3, a reset button Key, and a resistor R1; where one end of the crystal oscillator is connected to one end of the non-polar capacitor C1 and connected to The first clock input pin (pin 19) of the microcontroller is connected, the other end of the crystal oscillator is connected to one end of the non-polar capacitor C2 and then connected to the second clock input pin (pin 18) of the microcontroller; the non-polar capacitor C1 , The other end of C2 is grounded; one end of the reset button Key is connected to the positive pole of the polar capacitor C3 and then connected to the power supply pin (pin 31) of the microcontroller; the other end of the reset button Key is connected to the negative pole of the polar capacitor C3 Connect to the reset pin (pin 9) of the microcontroller; one end of the resistor R1 is connected to the reset pin (pin 9) of the microcontroller, and the other end of the resistor R1 is grounded; the power pin (pin 31) of the microcontroller is connected to the auxiliary 5V The power supply is connected. The model of the single-chip microcomputer is AT89C51, but not limited thereto.

As shown in Figure 2, the photosensitive module is composed of four identical photosensor chips U1; the voltage input terminals of the four photosensor chips U1 are connected to the power pins of the microcontroller; the clock pins and data pins of the four photosensor chips U1 They are all connected to different I/O pins of the microcontroller; the address pins and ground pins of the four light sensor chips U1 are all grounded. The models of the four photosensor chips U1 are all GY-30, but not limited thereto.

As shown in Figure 3, the display module includes an LCD liquid crystal display and a resistor R; one end of the resistor R is connected to the driving voltage pin (pin 3) of the LCD liquid crystal display, and the other end is grounded; all control pins of the LCD liquid crystal display Pins (pins 5, 6, 7) are connected to different I/O pins (pins 21, 22, 23) of the microcontroller; all data pins of the LCD display (pins 7, 8, 9, 10 , 11, 12, 13, 14) are respectively connected to different I/O pins (pins 39, 38, 37, 36, 35, 34, 33, 32) of the microcontroller; the backlight power supply pins of the LCD liquid crystal display (pin 15) and the power pin (pin 2) of the LCD liquid crystal display are connected to the power pin (pin 31) of the microcontroller; the backlight ground pin (pin 16) of the LCD liquid crystal display is connected to the ground Both pins (Pin 1) are grounded. The VO of the LCD liquid crystal display can adjust the brightness of the display backlight by connecting different resistors R; RS, RW, E are control pins, DB0-DB7 are data pins; RS is the data/command selection control terminal; when RS is connected to high level Choose to write data, select write command when RS is connected to low level; RW is the read and write control terminal, choose to read display data when connected to high level, and choose to write display data when RW is connected to low level; E is the enable terminal; transfer A character needs 8 bits of data, therefore, there are eight signal pins of DB0-DB7. The model of the LCD liquid crystal display is LCD1602, but not limited thereto.

As shown in Figure 4, the DA conversion module and the boost module include a DA conversion chip U2 and a boost chip U3; the reference power supply pin (pin 14) and the power supply pin (pin 16) of the DA conversion chip U2 are all connected to the microcontroller The power supply pin (pin 31) of the DA conversion chip U2 is connected; the three address pins (pins 5, 6, 7) and the ground pin (pin 8) of the DA conversion chip U2 are all grounded; the clock pin of the DA conversion chip U2 and data pins (pin 10 and pin 9) are respectively connected to the I/O pins (pin 23 and pin 24) of the microcontroller; the output pin (pin 15) of the DA conversion chip U2 is connected to the boost chip The input pin (pin 1) of U3 is connected; the ground pin (pin 2) of the boost chip U3 is grounded; the output pin (pin 3) of the boost chip U3 is connected to the dimming pin of the LED constant current driver connected; the model of the DA conversion chip U2 is PCF8951, but not limited thereto; the model of the boost chip U3 is LM2577, but not limited thereto; the LED constant current driver adopts Inventronics EUC-052SxxxDT series drivers.

As shown in Figure 5, the working principle of the LED track light with intelligent light-sensing and dimming functions is as follows: When the external light intensity changes, four light sensors detect the ambient light intensity, and then send the corresponding light intensity signal value to the single-chip microcomputer. The four photosensors are initialized, and the photosensitive values L1, L2, L3 and L4 of the four photosensors are read in sequence, and converted into digital quantities V1, V2, V3 and V4; the average value of the four is V, and then passed Proportional-integral-differential adjustment generates a digital dimming signal; the digital dimming signal is sent to the DA conversion module, and the output is an analog voltage value u1 of 0-5V, while the dimming interface of the LED constant current driver requires a voltage value of 0-10V , so u1 needs to be converted into a dimming voltage value u2 of 0-10V through the boost driver module, and the dimming voltage value u2 is sent to the dimming interface of the LED constant current driver, and the LED constant current driver drives the LED track light for dimming. Through the above-mentioned circuit connection, the intelligent dimming in which the LED adjusts its own brightness following the change of the ambient light intensity is realized, which is more energy-saving and convenient for users to use.

Claims (5)

1. An LED track light with intelligent photosensitive and dimming functions, characterized in that it comprises an LED track light and a circuit board; wherein, the circuit board comprises a photosensitive module, a display module, a micro-processing module, a DA conversion module, a voltage module and LED constant current driver, etc.; the photosensitive module, display module, and DA conversion module are all connected to the microprocessing module, the DA conversion module is connected to the boost module, and the boost module is connected to the LED constant current driver; the photosensitive module, LED constant current The drivers are all connected to the LED track light, and the LED constant current driver is connected to the grid socket; the photosensitive module is used to detect the light intensity of the environment where the LED track light is located; the display module is used to display the current ambient light intensity and the LED track light intensity; The microprocessing module is used to read the light intensity signal of the photosensitive module and convert the light intensity signal into a digital dimming signal; the DA conversion module converts the digital dimming signal output by the microprocessing module into an analog voltage signal; The module is used to amplify the analog voltage signal; the LED constant current driver receives the amplified analog voltage signal of the boost module, and outputs the LED driving current through the linear input voltage-output current relationship. 2. The LED track light with intelligent light-sensing and dimming functions according to claim 1, wherein the micro-processing module includes a single-chip microcomputer, a crystal oscillator, non-polar capacitors C1 and C2, polar capacitor C3, and a reset button Key, resistor R1; where one end of the crystal oscillator is connected to one end of the non-polar capacitor C1 and then connected to the first clock input pin of the microcontroller, and the other end of the crystal oscillator is connected to one end of the non-polar capacitor C2 and then connected to the second pin of the microcontroller The clock input pins are connected; the other ends of the non-polar capacitors C1 and C2 are grounded; one end of the reset button Key is connected to the positive pole of the polar capacitor C3 and then connected to the power pin of the microcontroller; the other end of the reset button Key is connected to the polarity The negative electrode of the capacitor C3 is connected to the reset pin of the single-chip microcomputer; one end of the resistor R1 is connected to the reset pin of the single-chip microcomputer, and the other end of the resistor R1 is grounded. 3. The LED track light with intelligent photosensitive and dimming functions according to claim 1, wherein the photosensitive module is composed of four identical photosensor chips U1; the voltage input terminals of the four photosensor chips U1 are connected to The power supply pins of the microcontroller are connected; the clock pins and data pins of the four photosensor chips U1 are connected to different I/O pins of the microcontroller; the address pins and ground pins of the four photosensor chips U1 are grounded. 4. The LED track light with intelligent photosensitive and dimming functions according to claim 1, wherein the display module includes an LCD liquid crystal display and a resistor R; one end of the resistor R is connected to the driving voltage of the LCD liquid crystal display The pins are connected, and the other end is grounded; all control pins of the LCD liquid crystal display are connected to different I/O pins of the single-chip microcomputer; all data pins of the LCD liquid crystal display are connected to different I/O pins of the single-chip microcomputer; The backlight power supply pin of the LCD liquid crystal display and the power supply pin of the LCD liquid crystal display are connected to the power supply pin of the single-chip microcomputer; the backlight ground pin and the grounding pin of the LCD liquid crystal display are grounded. 5. The LED track light with intelligent photosensitive and dimming functions according to claim 1, characterized in that, the DA conversion module and the boost module include a DA conversion chip U2 and a boost chip U3; the DA conversion chip U2 The reference power supply pin and the power supply pin are connected with the power supply pin of the single-chip microcomputer; the three address pins and the ground pin of the DA conversion chip U2 are all grounded; the clock pin and the data pin of the DA conversion chip U2 are respectively connected with the single-chip microcomputer The I/O pins are connected; the output pin of the DA conversion chip U2 is connected to the input pin of the boost chip U3; the ground pin of the boost chip U3 is grounded; the output pin of the boost chip U3 is connected to the LED constant current driver. Dimming pin connected.