TWM499728U - Illumination system - Google Patents

Description

Lighting system

This creation is about a lighting system control method applied to street lamps.

In today's era of high environmental awareness, energy development and consumption have been paid more attention. In order to prolong the activity time of human activities and increase the working environment, lighting equipment is an indispensable thing in daily life. Currently, lighting is mainly used as a light source or a light bulb. However, even if these devices have been improved many times, there are still some shortcomings. Tungsten wire emits light, the photoelectric conversion efficiency is low, and most of the energy is consumed in heat energy. Therefore, the power consumption is high, the reaction is slow or easy to be damaged, and in the lamp tube, in order to cause electrons to collide with each other to generate light, it is necessary to fill the mercury gas, but the mercury is applied to the environment. The pollution is well known and is not suitable for discussion on environmental issues. In place of the mainstream technology of light bulbs or tubes, Light-Emitting Diode (LED) has the highest voice, and it uses electrons to move light in the energy level of semiconductor materials to produce light. It has low power consumption and high efficiency. Unlike traditional light bulbs, which emit light with filaments, they have a long service life and are not easily damaged, or the mercury-filled gas causes significant pollution to the environment. Therefore, in order to reduce energy consumption and environmental pollution, most of the current policies have replaced street lamps as light-emitting diode sources.

In addition, in order to make the LEDs do not need to be replaced by the user, the development of the LEDs is mainly in accordance with the specifications of the conventional lamp holders, and the majority of the LEDs are arranged in series or in parallel. On the seat, a light fixture is formed. In addition, according to the purpose and environment of each manufacturer, each manufacturer has a string of light-emitting diodes or The number of connections is inconsistent. For example, at present, a rated voltage of a light-emitting diode is about 3 to 4 volts. A manufacturer may connect a plurality of light-emitting diodes in series or in parallel to form a lamp, or the lamps may be connected in series or in parallel to make a voltage rating of 110 volts for a household. Therefore, the voltage required for each manufacturer to produce the luminaire is different, so that the lamps formed by different patterns or different numbers of illuminating diodes have different voltages, or the rated voltage of each illuminating diode is different, if it is applied For street lamps, the reliability of each LED is a big test.

In order to solve the above problems, in the prior art, a lamp is provided, and a light bar is disposed. The light bar includes a plurality of light emitting diodes, and the lamp comprises: a driving module, a casing, a lamp cover and a lamp holder. The driving module includes a driving unit and a specification identifying unit. The driving unit provides an electronic environment with specific electronic characteristics to the light bar corresponding to a specification data obtained by the specification identifying unit, so that the light bar emits light. The light bar is disposed between the casing and the lamp cover, and is electrically connected to the driving module via the lamp socket. The specification data is obtained by the specification identifying unit from the light bar. Obtaining a specification data stored in the specification storage unit of the light bar by the specification identification unit disposed in the lamp to identify the electronic characteristics of the light bar and/or the light element therein, thereby providing the illumination lamp The electronic environment of the electronic characteristics used in the strip causes the light strip to illuminate. However, this method relies on the specification unit to identify lamps of different specifications. It is necessary to additionally set a specification storage unit. If it is applied to a street lamp, it will cause additional power consumption and space.

Another conventional technology is a light-emitting diode control circuit, which is suitable for controlling a light-emitting diode lamp. The light-emitting diode lamp comprises a plurality of light-emitting diode lamp strings, wherein the light-emitting diode lamp is compared. Preferably, the maximum input voltage does not exceed 70 volts and the number of strings of the LED strings is preferably limited to 4 strings. The LED control circuit package The utility model comprises a plurality of diodes, a protection circuit, a plurality of constant current circuits and a switch. The anode of each diode is connected to the output of a single light-emitting diode string. The protection circuit is connected to the negative pole of each diode, and the protection is when the voltage of the input terminal of the light-emitting diode tube is higher than a critical value or the light-emitting diode of the light-emitting diode tube is short-circuited. The circuit outputs a switching signal. Each constant current circuit is connected to an output end of the single light emitting diode string, and controls whether the constant current circuit works according to a switch control signal to thereby control whether the light emitting diode lamp operates, and is controlled according to a dimming control signal The brightness of the light-emitting diode tube. The switch does not affect the switch control signal when the switch signal is not received, and controls the light-emitting diode lamp to be inoperative by the switch control signal when receiving the switch signal. The above method utilizes a constant current circuit to enable each of the LED strings to operate and control the brightness, but the method is to prevent the voltage from being excessively damaged, and the maximum voltage of the string is not more than 70 volts, and is applied to the street lamp. It is very inconvenient to be able to flexibly configure the number of its LEDs.

In summary, the conventional technology cannot increase the stability and life of each light-emitting diode when the light-emitting diode is applied to a street lamp, and it can flexibly configure the major defects of the number of light-emitting diodes.

The main purpose of this creation is to provide a street lamp controller that can drive a plurality of street lamps, and the lamp source is composed of a plurality of light emitting diodes.

The secondary purpose of this creation is to provide a controller for street lamps that automatically detects the operating voltage of the LEDs of the street lamps so that the voltage is suitable for the operating point of the LED.

In order to achieve the above-mentioned various purposes and effects, the creative department exposes a street lamp control The controller allows the user to flexibly configure the number of light-emitting diodes by simply coupling the controller between the power supplies. The controller supplies a plurality of street lamp voltages, and the voltage is gradually increased. The controller automatically detects the total current after each voltage increase of the LEDs of the street lamps, and uses each of the amplification voltages and the total of each detection. The current calculates the working voltage of all the light-emitting diodes, and after determining the working voltage, the controller stops the voltage increase, so that the back-end light-emitting diode does not cause excessive voltage and is damaged.

In an embodiment, the controller of the street lamp comprises: a control unit having a voltage input end and a voltage output end, the voltage output end outputting a voltage to supply a plurality of street lights; and a detecting unit detecting a total current of one of the light emitting diodes; wherein the control unit adjusts the operating voltage according to the total current.

In another preferred embodiment, the control unit of the controller further includes an arithmetic circuit that calculates a slope of the voltage and the total current.

In another preferred embodiment, the control unit of the controller further includes a driving circuit for gradually increasing the voltage of the LEDs of the street lamp.

10‧‧‧Lighting diode controller

100‧‧‧Control unit

101‧‧‧Operating circuit

102‧‧‧ drive circuit

200‧‧‧Detection unit

D‧‧‧Lighting diode

The first figure is a schematic diagram of the controller of a street lamp according to a preferred embodiment; the second figure is a characteristic curve of the forward bias of the light-emitting diode; the third figure: A flow chart of a controller of a preferred embodiment; a fourth diagram: a schematic diagram of a controller of another preferred embodiment of the present invention; and a fifth diagram: a schematic diagram of a calculated slope of the creation operation circuit;

In order to give your reviewers a better understanding and understanding of the characteristics of the creation and the efficacies achieved, please provide a better example and a detailed description. Referring to the first figure, which is a schematic diagram of a controller of a street lamp according to a preferred embodiment of the present invention: as shown in the figure, the controller 10 of the creation street lamp comprises: a control unit 100; and a detecting unit 200. The control unit 100 has a voltage input terminal Vin coupled to the power source, and the voltage output terminal Vo outputs a working voltage to supply a plurality of street lamps, wherein the lamp sources of the street lamps are composed of a plurality of LEDs D, so the following will be plural The LEDs D indicate that a detection unit 200 detects the total current of the LEDs D and supplies the total current data to the control unit 100. The control unit 100 adjusts the operating voltage according to the total current.

Please refer to the second figure, which is the characteristic curve of the forward bias of the light-emitting diode: as shown in the figure, the control unit 100 of the author controller operates according to the conventional single light-emitting diode, such as curve C. As shown in Fig. ₁ , with all input voltage Vcut, when the voltage is less than the cut-in voltage Vcut, the light-emitting diode system is not turned on, the working current is very small, and approaches zero, but when the voltage is greater than the cut-in voltage Vcut, the light-emitting diode system In the on state, the operating current rises rapidly. Similarly, most of the same light-emitting diodes can be connected in series. As shown by the curve C ₂ , when the number of series is larger, the cut-in voltage Vcut will be larger; most of the same light-emitting diodes are connected in parallel, and the more the number of parallel connections , the faster the speed of the operating current increases, as shown in the curve C _3; if the same series and in parallel to the light emitting diode while the cut Vcut voltage is increased while the operating current is also increased together. The control unit 100 of the present invention can control the voltage supplied to the light-emitting diode D to drive a plurality of light-emitting diodes D. The detecting unit 200 detects the total current of the LEDs D and transmits the total current signal back to the control unit 100. The control unit 100 adjusts the driving voltage according to the total current. Since the number of the LEDs connected in series or in parallel is unknown, the control unit 100 obtains the working voltages of all the LEDs D by using the total current detected by the detecting unit 200, and controls the supply of the LEDs D. The voltage is such that the voltage is equal to the operating voltage. With the above device and method, the power source can obtain the working voltage of the LEDs of all the street lamps through the controller 10 of the street lamp of the present invention, and supply the working voltage, and the internal light-emitting diodes are connected when the group street lamps are connected in series. The number of bodies can be flexibly configured, and a stable supply voltage is maintained to increase the life of the street lamp.

Please refer to the third figure, which is a working flow chart of the controller according to a preferred embodiment of the present invention. As shown in the figure, according to the controller 10, the steps are as follows. In step S10, the output of the control unit 100 generates a The voltage is applied to the plurality of light emitting diodes; in step S20, the detecting unit 200 detects the total current of the light emitting diodes; in step S30, the control unit 100 amplifies the voltage; in step S40, the detecting unit 200 detects the light emitting diodes. The total current; step S50: the control unit 200 calculates the slope of the voltage and the total current; step S60: determining whether the slope is the desired slope, so that the light-emitting diodes are all turned on; step S70: if the light-emitting diodes are All of them are turned on, that is, a pilot signal is generated, so that the control unit 200 does not continue to increase the voltage. If the light-emitting diodes are not all turned on, the process returns to step S30. Through the above method, one of the operating voltages of the light-emitting diodes can be completely turned on, and the controller 10 is used to maintain the voltage slightly higher than or equal to the operating voltage, so that the light-emitting diodes are not damaged due to excessive voltage. . Through the above process, one of the operating voltages of the light-emitting diodes is completely turned on, and the voltage is maintained at the operating voltage by the controller, so that the light-emitting diodes are not damaged by excessive voltage.

Please refer to the fourth figure, which is a schematic diagram of a controller according to another preferred embodiment of the present invention. As shown in the figure, the control unit 100 further includes an operation circuit 101 and a drive circuit 102. The operation circuit 101 has two input terminals, one end of which receives the voltage supplied to the LED, and the other end receives the total current signal obtained by the detection unit 200. The driving circuit 102 has an input terminal coupled to the power source, and the output terminal outputs the illumination. The voltage of the diode D, the voltage of the driving circuit 102 gradually increases the voltage supplied to the light-emitting diode, so that the voltage starts from the initial value and increases by one microvolt per time interval, and the micro-volt value can be adjusted according to the user's needs, for example, The adjustment range is from 10 ^-5 mV to 10 ^-1 mV. When the resolution demand is larger, the voltage is increased every time. When one input terminal of the operation circuit 101 receives the voltage, the other input terminal can obtain a total current. When the voltage is increased by one microvolt each time, another total current is obtained. At this time, the operation circuit 101 is based on the voltage before the amplification. The total current and the voltage after the amplification and the total current are calculated, and the slope of the voltage and current is calculated. The operating voltage of the currently used LED is determined by the slope. When the operating circuit 101 obtains the operating voltage of the currently used LED D, A working signal is transmitted to the driving circuit 102. When the driving circuit 102 receives the working signal, the driving circuit 102 stops increasing the voltage supplied to the light emitting diode so that the voltage is equal to the operating voltage. With the above device and method, the power supply can be obtained through the controller 10 of the light-emitting diode of the present invention, so that the current working voltage can be obtained, so that the light-emitting diodes are all in the working state, and the light-emitting diode can be flexibly configured when applied to the street lamp. The number of polar bodies.

Please refer to the fifth figure, which is a schematic diagram of the calculation slope of the creation operation circuit; as shown in the figure, the picture is a partial amplification of the characteristic curve C of the light-emitting diode, wherein the voltage supplied by the drive circuit is Vn, Vn1, Vn2. And Vn3, the voltages Vn and Vn1 are smaller than Vcut, and the voltages Vn2 and Vn3 are greater than Vcut. When the voltage is Vn, there is a total current In. When the voltage is increased to Vn1, there is another total current In1. At this time, the operation circuit 101 obtains a voltage Vn and a total current In, and the voltage Vn1 and the total current In1. The slope S1 is calculated as: When the voltage is increased to Vn2, there is a total current In2. At this time, the operation circuit 2011 obtains a slope S2 from the voltage Vn1 and the total current In1, and the voltage Vn2 and the total current In2, and the calculation formula is: When the voltage Vn3 is pushed in this way, the arithmetic circuit 101 can also obtain a total current In3 and a slope S3. Therefore, when the voltage is gradually increased, the slope of the voltage and current on the light-emitting diode is larger. When the voltage is equal to Vn or Vn1, the light-emitting diode may not be fully turned on, and the slope S1 obtained at the voltage Vn1 is very small. When the voltage is Vn2 or Vn3, all of the light-emitting diodes may be fully turned on, and the slopes S2 and S3 obtained at the voltages Vn2 and Vn3 are very large. Note that the meaning of this is not fully conductive and may be all turned on. It means that although the LEDs of the same specifications are the same, there is still a slight difference in the cut-in voltage, for example, 10 ^-5 mV or even smaller, when the voltage is too close. The cut-in voltage of each of the light-emitting diodes is such that not all of the light-emitting diodes are not turned on or have been turned on. The solution to this part can be solved by the resolution of the voltage increase, where the resolution is adjusted as described above. In addition, the operating voltage is determined by the slope, and the working signal is transmitted to the driving circuit 102, and the magnitude of the slope can be adjusted by the user, for example, the user only wants to operate the LEDs without giving a full load rating. For the voltage, set the slope value to be smaller, but make all the LEDs work. Otherwise, set the slope value to be larger, but not all the LEDs are damaged.

The present invention utilizes the working characteristics of the diode to complete a light-emitting diode controller and method. The LED controller has a control unit output driving voltage, and a detecting unit detects one of the light-emitting diodes. The total current, the control unit calculates the operating voltage of the current light-emitting diode according to the total current, and maintains the voltage at the working voltage, When the controller is applied to a street light, the life of the street lamp can be increased, and the number of the light-emitting diodes can be flexibly configured according to requirements.

This creative department is a novelty, progressive and available for industrial use. It should meet the requirements of patent applications stipulated in China's Patent Law. It is undoubtedly proposed to create patents according to law, and the Prayer Bureau will grant patents as soon as possible. prayer.

10‧‧‧ Controller

100‧‧‧Control unit

200‧‧‧Detection unit

D‧‧‧Lighting diode

Claims (7)

A controller for a street lamp, the controller comprising: a control unit that outputs a working voltage to a plurality of street lamps; and a detecting unit that detects a total current of the street lamps and returns the total current to the control unit The control unit adjusts the operating voltage according to the total current. The controller of claim 1, wherein the light sources of the street lamps are composed of a plurality of light emitting diodes. The controller of claim 2, wherein the control unit further comprises an arithmetic circuit that calculates a slope of the operating voltage and the total current. The controller of claim 3, wherein the control unit further comprises a driving circuit for gradually increasing the operating voltage. The controller of claim 2, wherein the light emitting diodes are applied to the same rated voltage. The controller of claim 2, wherein the light emitting diodes are connected in series. The controller of claim 2, wherein the light emitting diodes are in parallel.