TWM538573U - Automatic control system of LED module - Google Patents

Description

LED module automatic control system

This creation is an automatic control system for LED modules, especially an automatic control system that has an LED module that achieves uniform heat dissipation and brightness.

In recent years, with the rapid development of the emerging lighting industry of Light-emitting Diodes (LEDs), LEDs have exceeded or approached the energy saving of traditional bulbs in terms of brightness, power, lifetime, power consumption, and reaction rate. Light sources, so that LEDs have gradually begun to replace traditional light bulbs, such as LED applications in lighting, landscape, billboards, indoor lighting and other fields have long been widely used. In the case of an LED lamp, when the LED lamp is in operation, a plurality of LED units therein generate extremely high heat accumulated in the LED lamp, so that the LED unit is in an unstable state, such as causing the brightness of the LED unit to decrease. And the shortening of the service life occurs, so how to quickly derive the heat generated by the LED unit has become an important issue. The most common way of dissipating heat in general LED lamps is to set a plurality of heat-dissipating fins on the back of each LED unit to dissipate heat, but only the heat-dissipating fins are limited in heat dissipation, so a fan is added to the heat-dissipating fins. To force heat dissipation. However, although the conventional LED lamps can achieve heat dissipation, the heat dissipation effect is not obvious, and the LED unit cannot achieve uniform heat dissipation, that is, the LED lamps are easily exposed to environmental temperature and humidity and the LED units. The amount of heat generated causes the difference in heat conduction convection between the LED lamps, resulting in a large difference in the operating temperature of each LED unit (ie, each LED unit cannot be maintained at the same operating temperature), thereby shortening the life of some LED units, and This results in different brightness and attenuation of each LED unit. As described above, the prior art has the following disadvantages: 1. The brightness cannot be uniform; 2. The heat dissipation cannot be uniform; 3. The life is shortened; 4. Each LED unit cannot maintain the same operating temperature and attenuation. Therefore, how to solve the above problems and problems in the past, that is, the creators of the case and the relevant manufacturers engaged in this industry are eager to study the direction of improvement.

Therefore, in order to effectively solve the above problems, one of the purposes of the present invention is to provide an automatic control system having an LED module with uniform brightness. Another object of the present invention is to provide an automatic control system having an LED module that achieves uniform heat dissipation. Another object of the present invention is to provide an automatic control system having an LED module that enables each LED unit to be maintained at the same operating temperature. To achieve the above objective, the present invention provides an automatic control system for an LED module, comprising: at least one LED unit having a plurality of LED chips; at least one fan disposed on a side corresponding to the LED unit for dissipating heat to the LED unit At least one light sensor is disposed on a side of the adjacent LED unit for detecting the brightness of the LED unit to generate a light sensing signal; and a control device includes: an interface circuit electrically connecting the fan and a light sensor; a microprocessor is electrically connected to the interface circuit, and generates a control signal according to the light sensing signal; and a power management controller is electrically connected to the microprocessor, the fan and the LED unit, respectively, and The power management controller adjusts the brightness of the corresponding LED unit according to the received control signal control, and the integrated design of the LED unit, the fan, the light sensor and the control device of the present invention enables the brightness to be evenly achieved. By. In one implementation, the LED units form an LED module. In one implementation, the LED module is mounted on a light emitting device. In one implementation, the microprocessor knows the brightness of the LED unit according to the light sensing signal, and compares the brightness of the LED unit with a set brightness value thereof, if the brightness of the LED unit is lower than the set brightness The value immediately sends a first warning signal to connect to a terminal device. In an implementation, the automatic control system further includes at least one temperature sensor disposed adjacent to the fan position, and electrically connected to the interface circuit, detecting an ambient temperature and a temperature around the fan to generate a Temperature sensing signal. In one implementation, the microprocessor operates on the temperature sensing signal transmitted by the interface circuit to generate a driving signal to control the fan speed. In one implementation, the microprocessor knows the temperature of each part according to the temperature sensing signal, and compares the temperature of each part with a set temperature within the part, and if the temperature of the part exceeds the set temperature, sends a first Two warning signals to the connected terminal device.

The above object of the present invention, as well as its structural and functional features, will be described in accordance with the embodiments of the drawings. Please refer to the first and second figures. The present invention is an automatic control system for an LED module. In the first embodiment of the present invention, the automatic control system includes at least one LED (Light Emitting Diode) unit 10, at least one. The fan unit 20, the at least one photo sensor 41, and a control device 3 are shown in the embodiment as a plurality of LED units 10, and each LED unit has a plurality of LED chips, and the LED units 10 constitute an LED module. In the group 1, the LED module 1 is mounted on a light-emitting device 5, such as an LED kanban or an LED luminaire, and the illuminating device 5 in the present embodiment is an LED illuminator, but is not limited. Here, the first Chen Ming. The fan 20 is shown in the embodiment as a plurality of fans 20, and each fan 20 is disposed on one side of each LED unit 10 for forcibly dissipating heat from each of the LED units 10, so when the control device 3 is in operation A drive signal (eg, a PWM signal) is generated to the fan 20 to drive the fan 20 to operate. In the embodiment, the photo sensor 41 is disposed on one side adjacent to each of the LED units 10, and the photo sensor 41 is matched with the corresponding LED unit 10, and the light sensation is The detector 41 is configured to detect the brightness of the LED unit 10 to generate a light sensing signal and transmit it to the control device 3. In addition, in the specific implementation, the user can install the fan 20 together with the photo sensor 41 and the LED unit 10 in the illuminating device 5 according to the space and design requirements of the illuminating device 5 in advance. Each of the LED units 10 in the illuminating device 5 corresponds to each fan 20, and each of the photo sensors 41 is adjacent to each of the LED units 10. The control device 3 includes an interface circuit 30, a microprocessor 31 (MCU), and a power management controller 32. The interface circuit 30 is electrically connected to the fans 20, and the light sensing is performed. The device 41 and the microprocessor 31 are the medium for converting and transmitting signals between the microprocessor 31, the light sensor 41 and the fan 20. For example, the signal of the light sensor 41 is analog signal transmitted. The interface circuit 30 is converted to a digital signal that is operative to the microprocessor 31. The microprocessor 31 generates a control signal according to each of the light sensing signals, and transmits the control signal to the power management controller 32. That is, the microprocessor 31 receives the light transmitted by each of the photo sensors 41 through the interface circuit 30. Sensing the signal to know the brightness of each of the LED units 10, and simultaneously generating the control signal after receiving the operation of the optical sensing signal, and transmitting the control signal to the power management controller 32, so that the power management controller 32 is based on The received control signal adjustment control corresponds to the brightness of the LED unit 10, so as to effectively maintain each LED unit 10 at the same brightness, thereby effectively achieving the effect of uniform brightness. The power management controller 32 is electrically connected to the microprocessor 31, the fans 20, the LED units 10, and an input power source, and the power management controller 32 is configured to supply power to each of the fans 20 and In addition to each LED unit 10, the voltage of the LED unit 10 or the switching frequency can be adjusted and adjusted according to the received control signal to adjust the brightness of the LED unit 10. Referring to FIG. 2, the microprocessor 31 further has a warning function, that is, the microprocessor 31 knows the brightness of each LED unit 10 based on the light sensing signal, and the brightness of each LED unit 10 is within. Compared with setting the brightness value, if the brightness of a certain LED unit 10 (such as 150 lumens of light) is lower than the set brightness value (such as 200 lumens of light), a first warning is immediately sent. The signal is connected to a connected terminal device 6, so that the terminal device 6 knows from the received first warning signal that an abnormality (such as damage) occurs in the LED unit 10 somewhere, so as to perform maintenance processing immediately. Therefore, the LED unit 10, the fan 20, the photo sensor 41, and the control device 3 of the present invention are integrated into a design, so that each LED unit 10 is effectively controlled to maintain the same brightness, thereby effectively making the LED module 1 Achieve the effect of uniform brightness. Referring to Figures 3 and 4, which is a second embodiment of the present invention, the embodiment is substantially the same as the first embodiment described above, and the similarities are no longer ambiguous. The difference in the second embodiment is that the automatic control system is more The temperature sensor 42 is included in the embodiment, and the plurality of temperature sensors 42 are disposed adjacent to the fan 20 and electrically connected to the interface circuit 30, and the foregoing The temperature sensor 42 is matched to the fan 20, and each of the temperature sensors 42 is configured to detect an ambient temperature and a temperature corresponding to an environment surrounding each fan 20 to generate a temperature sensing signal. The control device 3. Referring to FIG. 4, in a specific implementation, the user can install the fan 20 together with the photo sensor 41, the temperature sensor 42 and the LED unit 10 in accordance with the space and design requirements of the illumination device 5 in advance. In the device 5, that is, each LED unit 10 side of the light-emitting device 5 corresponds to each fan 20, and each of the photo sensors 41 is adjacent to each of the LED units 10, and each of them The temperature sensor 42 is adjacent to each fan 20. In addition, the microprocessor 31 performs an operation on the light sensing signal and the temperature sensing signal transmitted by the interface circuit 30 to generate the control signal and a driving signal respectively. The driving signal is implemented as a PWM signal. The processor 31 generates the driving signal according to the temperature sensing signal, and adjusts the pulse width value of the driving signal to adjust the rotation speed of the corresponding fan 20. Specifically, the microprocessor 31 receives the light sensing signals transmitted by each of the photo sensors 41 and the temperature sensing signals transmitted by each of the temperature sensors 42 through the interface circuit 30, and senses the light sense from each of the light sensors. The test signal is learned to correspond to the brightness of each LED unit 10, and the control signal is generated after the operation of the light sensing signal, and is transmitted to the power management controller 32, so that the power management controller 32 adjusts and controls according to the received control signal. Corresponding to the brightness of the LED unit 10. Then, the microprocessor 31 learns the temperature of each part (that is, the ambient temperature of the outside environment and the temperature of the environment surrounding each fan 20) from each of the foregoing temperature sensing signals, and simultaneously performs the temperature sensing signal reception. After the operation, the driving signal is generated, and then the driving signal is transmitted to the fan 20 through the interface circuit 30 to control the rotation speed of each fan 20, thereby appropriately adjusting and controlling the amount of air discharged by each fan 20 for each LED unit 10. In one aspect, each LED unit 10 can be maintained at the same operating temperature and approximately the same amount of attenuation, thereby effectively achieving uniform heat dissipation, and on the other hand, effectively maintaining each LED unit 10 at the same brightness. In addition, the effect of uniform brightness is effectively achieved. Furthermore, referring to FIG. 4, the microprocessor 31 further has a warning function, and the warning function has the following two cases: wherein the first case is that the microprocessor 31 knows each light sensing signal. The brightness of an LED unit 10, and the brightness of each LED unit 10 is compared with the set brightness value therein, if the brightness of a certain LED unit 10 (such as 300 lumens (lumens) is lower than the set brightness value (such as 400) The light of the lumens is immediately sent to the connected terminal device 6 to cause the terminal device 6 to know from the received first warning signal that an abnormality (such as damage) occurs in the LED unit 10 somewhere, so that The maintenance process is immediately performed. The second case is that the microprocessor 31 knows the temperature of each part according to each temperature sensing signal, and compares the temperature of each part with a set temperature (for example, the set temperature is 70 degrees). If a temperature of the part (for example, the temperature is 100 degrees) exceeds the set temperature, a second warning signal is sent to the connected terminal device 6, so that the terminal device 6 knows the part from the received second warning signal. The temperature is abnormal, and it can be seen that the fan 20 corresponding to the part may be damaged for immediate maintenance. As described above, the LED unit 10, the fan 20, the photo sensor 41, the temperature sensor 42, and the control device are created by the present invention. 3 integrated into a design, so that not only can each LED unit 10 be maintained at the same operating temperature with appropriate air volume, and maintain substantially the same amount of attenuation, and can control each LED unit 10 to maintain the same brightness. Furthermore, the LED module 1 can effectively achieve the effect of uniform heat dissipation and brightness. In summary, the present invention has the following advantages compared with the conventional ones: 1. It has the effect of achieving uniform brightness; 2. It has the effect of achieving uniform heat dissipation; 3. Keep each LED unit at the same brightness; 4. Allow each LED unit to maintain approximately the same amount of attenuation at the same operating temperature. However, the above is only a feasible embodiment of this creation. Changes in the methods, shapes, constructions, and devices described above are intended to be included within the scope of the present invention.

1‧‧‧LED module
10‧‧‧LED unit
20‧‧‧Fan
3‧‧‧Control device
30‧‧‧Interface circuit
31‧‧‧Microprocessor
32‧‧‧Power Management Controller
41‧‧‧Light sensor
42‧‧‧Temperature Sensor
5‧‧‧Lighting device
6‧‧‧ Terminal devices

1 is a block diagram of a first embodiment of the present invention; FIG. 2 is another block diagram of a first embodiment of the present invention; FIG. 3 is a block diagram of a second embodiment of the present invention; 4 is another block diagram of the second embodiment of the present creation.

1‧‧‧LED module

10‧‧‧LED unit

20‧‧‧Fan

3‧‧‧Control device

30‧‧‧Interface circuit

31‧‧‧Microprocessor

32‧‧‧Power Management Controller

41‧‧‧Light sensor

Claims (8)

An automatic control system for an LED module, comprising: at least one LED unit having a plurality of LED chips; at least one fan disposed on a side corresponding to the LED unit for dissipating heat to the LED unit; at least one photo sensor, The device is disposed on a side of the adjacent LED unit for detecting the brightness of the LED unit to generate a light sensing signal; and a control device comprising: an interface circuit electrically connected to the fan and the a light sensor; a microprocessor electrically connected to the interface circuit and generating a control signal according to the light sensing signal; and a power management controller electrically connected to the microprocessor and the LED unit And the fan, and the power management controller adjusts the brightness of the corresponding LED unit according to the received control signal control. The automatic control system for an LED module according to claim 1, wherein the LED units constitute an LED module. The automatic control system for an LED module according to claim 2, wherein the LED module is mounted on a light-emitting device. The automatic control system for an LED module according to claim 1, wherein the microprocessor knows the brightness of the LED unit according to the light sensing signal, and sets the brightness of the LED unit to a brightness value thereof. In contrast, if the brightness of the LED unit is lower than the set brightness value, a first warning signal is immediately sent to connect to a terminal device. The automatic control system of the LED module of claim 1, further comprising at least one temperature sensor disposed adjacent to the fan position, wherein the temperature sensor is electrically connected to the interface circuit, the temperature sense The detector is configured to detect the temperature of the external environment and the temperature around the fan to generate a temperature sensing signal. The automatic control system for an LED module according to claim 5, wherein the microprocessor performs an operation according to a temperature sensing signal transmitted by the interface circuit to generate a driving signal to control the fan speed. The automatic control system for an LED module according to claim 6, wherein the microprocessor knows the temperature of each part according to the temperature sensing signal, and compares the temperature of each part with a set temperature therein. If the temperature of the part exceeds the set temperature, sending a second warning signal to the connected terminal device. . The automatic control system for an LED module according to claim 1, wherein the power management controller is electrically connected to an input power source for respectively supplying power to the fan and the LED unit.