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WO2010145535A1 - 一种调光灯具 - Google Patents

一种调光灯具 Download PDF

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Publication number
WO2010145535A1
WO2010145535A1 PCT/CN2010/073960 CN2010073960W WO2010145535A1 WO 2010145535 A1 WO2010145535 A1 WO 2010145535A1 CN 2010073960 W CN2010073960 W CN 2010073960W WO 2010145535 A1 WO2010145535 A1 WO 2010145535A1
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WO
WIPO (PCT)
Prior art keywords
unit
gear position
touch
power
control unit
Prior art date
Application number
PCT/CN2010/073960
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English (en)
French (fr)
Inventor
庄佳卿
徐敬坤
李国良
张顺勇
Original Assignee
漳州灿坤实业有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 漳州灿坤实业有限公司 filed Critical 漳州灿坤实业有限公司
Priority to US13/378,073 priority Critical patent/US20120086343A1/en
Priority to DE112010002818T priority patent/DE112010002818T5/de
Priority to AU2010262280A priority patent/AU2010262280A1/en
Priority to JP2012515344A priority patent/JP2012530333A/ja
Publication of WO2010145535A1 publication Critical patent/WO2010145535A1/zh

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    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
    • H05B45/10—Controlling the intensity of the light
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
    • Y02B20/30—Semiconductor lamps, e.g. solid state lamps [SSL] light emitting diodes [LED] or organic LED [OLED]

Definitions

  • the present invention relates to a lighting fixture, and more particularly to a lighting fixture using a light emitting diode (LED).
  • LED light emitting diode
  • the lamps of the existing incandescent lamps all adopt the method of adjusting the voltage to achieve the purpose of dimming.
  • a luminaire using a light-emitting diode (LED) it is not suitable for the purpose of dimming by adjusting the voltage. Therefore, the industry attempts to adjust the effective current supplied to the LED lamp to adjust the duty ratio of the pulsating DC power supplied to the LED lamp to achieve the purpose of dimming.
  • the Chinese invention patent specification CN 201114962Y disclosed the patent number ZL 200720075227.8, the technical scheme named "touch switch dimmer”, proposes that the power supply module of the switch part supplies power to the touch signal control module and the switch output module, and the touch signal control module receives the operation signal of the touch sensing key input module, and then controls the switch output module.
  • the dimming part of the power module supplies power to the dimming module and the dimming output circuit (drive unit), and the dimming module controls the dimming module to change after receiving the operation signal of the knob input module
  • the pulse width of the square wave is output, so that the duty ratio of the pulsating direct current supplied to the LED lamp of the dimming output circuit is changed to achieve the purpose of dimming.
  • the technical solution also has the following disadvantages: 1.
  • the touch switch and the knob are combined to realize the control, and the convenience of operation is poor.
  • the internal power supply system consists of the switch part power module, the switch output module and the dimming part power module. The structure is cumbersome and the switch output module uses the relay, and the life and reliability are limited. Therefore, it is not suitable for use in various high-end homes or service places.
  • the invention aims to provide a dimming lamp which is convenient to operate and simple in structure and reliable.
  • the technical solution of the present invention is: a dimming lamp, the power module supplies power to a driving unit controlled by a pulse width modulation signal, and the driving unit supplies power to the main lamp; the power module supplies power to the touch signal conversion unit and the microprocessor control unit;
  • the touch signal conversion unit receives the switch or the gear position sensing signal provided by each sensing key of the touch sensing keyboard and converts it into a corresponding control potential signal and transmits the signal to the microprocessor control unit;
  • the microprocessor control unit analyzes the control potential provided by the touch signal conversion unit The signal sends a corresponding pulse width modulation signal to the driving unit to control the driving unit not to supply power to the main lamp or to supply power to the main lamp with an effective current of a predetermined gear position.
  • the touch signal conversion unit sends a corresponding signal to the microprocessor control unit.
  • the microprocessor control unit controls the driving unit to operate the switching action and the dimming action of the main lamp.
  • the power module sends power to the gear position indicating unit
  • the microprocessor control unit sends the current gear position control signal to the gear position indicating unit to illuminate the indicator light corresponding to the gear position indicating unit.
  • the user can visually understand the current gear status by observing the indicator lights of the gear position indicating unit to determine whether the brightness of the main lamp needs to be further adjusted.
  • the touch signal conversion unit is a capacitive touch sensing integrated circuit module.
  • the connection between the capacitive touch sensing integrated circuit module and the sensing keys of the touch sensing keyboard and the microprocessor control unit is simple, which is advantageous for assembly and production; and has long service life and good reliability.
  • the main lamp is a light-emitting diode lamp.
  • the pulse width modulation effective current supply mode is most suitable for the operating characteristics of the LED lamp, and can fully exert the potential of dimming the LED lamp.
  • the dimming lamp of the invention uses a power module to supply power to each unit, and adopts a touch signal conversion unit to receive a switch or gear position sensing signal provided by each sensing button of the touch sensing keyboard and converts it into a corresponding control potential signal and transmits it to the microprocessor control.
  • the microprocessor control unit parses the control potential signal provided by the touch signal conversion unit, and sends a corresponding pulse width modulation signal to the driving unit to control the state in which the driving unit supplies power to the pulse width modulation lamp.
  • the structure is simple and clear, the functions of each unit are clear, and it is easy to implement with an integrated circuit module, so it is beneficial to improve the service life and reliability.
  • the touch-sensitive keyboard is used to comprehensively process the main light of the switch and adjust the brightness of the main light. The user can slide or touch each of the sensing keys with one finger to quickly complete the corresponding control and achieve a smooth operation interface. .
  • Figure 1 is a block diagram showing the circuitry of an embodiment of a dimming luminaire of the present invention.
  • FIG. 2 is a schematic diagram showing the circuit structure of a driving unit in the embodiment of FIG. 1.
  • FIG. 3 is a schematic diagram showing the circuit connection relationship between the touch sensing keyboard, the touch signal conversion unit, and the microprocessor in the embodiment of FIG. 1.
  • FIG. 4 is a schematic diagram showing the circuit structure of a gear position indicating unit in the embodiment of FIG. 1.
  • FIG. 5 is a schematic diagram showing the control flow of the microprocessor control unit of the embodiment of FIG. 1.
  • FIG. 5 is a schematic diagram showing the control flow of the microprocessor control unit of the embodiment of FIG. 1.
  • FIG. 1 A circuit block of an embodiment of the dimming luminaire of the present invention is shown in FIG.
  • the dimming luminaire is a table lamp.
  • a circuit board is disposed in the casing of the lamp, and the circuit board is provided with a power module 1, a driving unit 2, a touch signal conversion unit 5 and a microprocessor control unit 6.
  • a touch sensing keyboard 4 and a gear position indicating unit 7 are disposed on the panel of the housing.
  • the power module 1 has an AC voltage transformation, rectification and filtering circuit, and converts AC mains (AC) into two DC outputs VIN and VCC; the first DC output VIN supplies power to the driving unit 2, and the second DC output VCC to the touch
  • the signal conversion unit 5, the microprocessor control unit 6, and the gear position indicating unit 7 are powered.
  • the circuit structure of the driving unit 2 is as shown in FIG. 2: the power input end of the driving unit 2, that is, the front end of the varistor RP1 is connected to the first DC output VIN of the power module 1.
  • the rear end of the varistor RP1 is connected in series with the current limiting resistor R1 and is connected to a power supply end of the main lamp 3 composed of a light emitting diode.
  • the main lamp 3 can also use an incandescent lamp.
  • the control input of the driving unit 2, that is, the connection point of the bias resistor R3 and the current limiting resistor R2 is connected to the pulse width modulation signal output terminal PWM of the microprocessor control unit 6.
  • the other end of the bias resistor R3 is grounded.
  • the other end of the current limiting resistor R2 is connected to the gate G of the field effect switching transistor Q1.
  • the source of the field effect switch Q1 is grounded, and the drain is connected to the other power terminal of the LED main lamp 3.
  • the field effect switch tube Q1 is of the type S2306.
  • the touch sensitive keyboard 4 has five sensing keys L1, L2, L3, L4, and L5.
  • Each of the sensing keys L1, L2, L3, L4, and L5 of the touch sensitive keyboard 4 is a copper foil strip disposed between two layers of insulating material, and each adjacent two sensing keys constitute a capacitor.
  • the lead lines of the respective sensing keys L1, L2, L3, L4, and L5 are respectively connected to the signal input ends corresponding to the touch signal conversion unit 5.
  • the touch signal conversion unit 5 in this embodiment uses alpha pacific technology Co., Ltd. produces a capacitive touch sensing integrated circuit module of the type ap3018DN.
  • the signal input terminals IN3, IN4, IN5, IN6, and IN7 of the touch signal conversion unit 5 sequentially connect the sensing keys L1, L2, L3, L4, and L5, respectively.
  • the conversion output terminals Q3, Q4, Q5, Q6, and Q7 corresponding to the respective sensing keys L1, L2, L3, L4, and L5 on the touch signal conversion unit 5 are respectively connected to the respective detection input terminals of the microprocessor control unit 6.
  • Resistors R501, R502, R503, R504, and R505 are provided between the conversion output terminals Q3, Q4, Q5, Q6, and Q7 of the touch signal conversion unit 5 and the DC power supply VCC, respectively.
  • the microprocessor control unit 6 is a conventional microprocessor.
  • the SN8P2501 is used.
  • Each detection input terminal P2.2, P2.1, P2.0, P1.3 of the microprocessor 6 P1.1 is sequentially connected to the conversion output terminals Q3, Q4, Q5, Q6, and Q7 of the touch signal conversion unit 5, respectively.
  • the output terminals of the microprocessor 6 are P2.3, P2.4, P2.5, P0.0 And P1.0 are sequentially used as the first gear position control output LED 1, the second gear position control output LED 2, the third gear position control output LED3, the fourth gear position control output LED4, and the fifth gear position control output LED5 corresponding connection file.
  • the bit indicates the input of each gear of the unit 7.
  • the output P5.4 of the microprocessor 6 is connected to the control input of the drive unit 2 as a pulse width modulated signal output.
  • the circuit structure of the gear position indicating unit 7 is as shown in FIG. 4: the gear position indicating unit has five sets of LED indicators.
  • the first group of LED indicators has only one LED D11, and the LED D11 and the current limiting resistor R11 are connected in series to the second DC output VCC of the power module 1 and the first gear control output LED1 of the microprocessor control unit 6. between.
  • the second group of LED indicators has two LEDs D21 and D22.
  • the power switch of the second group of LED indicators is composed of a transistor Q2, a bias resistor R21 and a current limiting resistor R22.
  • the emitter of the transistor Q2 is connected to the second DC output VCC of the power module 1 and one end of the bias resistor R21; the base of the transistor Q2 is connected to the other end of the bias resistor R21 and the rear end of the current limiting resistor R22.
  • the second gear control output LED2 of the microprocessor control unit 6 is connected to the control input of the power switch, that is, the front end of the current limiting resistor R22.
  • the collector of the transistor Q2 is connected to the anodes of the two light-emitting diodes D21, D22.
  • the negative electrodes of the two LEDs D21 and D22 are grounded through respective current limiting resistors R23 and R24.
  • the third group of LED indicators has two LEDs D31 and D32.
  • the power supply switch of the third group of LED indicators is composed of a transistor Q3, a bias resistor R31 and a current limiting resistor R32.
  • the third gear position control output LED3 of the microprocessor control unit 6 is connected to the control input of the power supply switch, that is, the front end of the current limiting resistor R32.
  • the fourth group of LED indicators has two LEDs D41 and D42.
  • the power switch of the fourth group of LED indicators is composed of a transistor Q4, a bias resistor R41 and a current limiting resistor R42.
  • the fourth gear position control output LED4 of the microprocessor control unit 6 is connected to the control input of the power supply switch, that is, the front end of the current limiting resistor R42.
  • the fifth group of LED indicators has two LEDs D51 and D52.
  • the power supply switch of the fifth group of LED indicators is composed of a transistor Q5, a bias resistor R51 and a current limiting resistor R52.
  • the fifth gear control output LED 5 of the microprocessor control unit 6 is connected to the front end of the control input of the power switch, that is, the bias resistor R52.
  • the control flow of the microprocessor control unit 6 in the working process of this embodiment is as shown in FIG. 5:
  • Step 101 The desk lamp is powered on, and the AC mains supply power to the power module 1.
  • the first DC output VIN of the power module 1 supplies power to the drive unit 2, and the second DC output VCC supplies power to the touch signal conversion unit 5, the microprocessor control unit 6, and the gear position indicating unit 7.
  • Step 102 The microprocessor control unit 6 detects each of its detection inputs to check whether there is a touch signal.
  • the sensing keys L1, L2, L3, L4, and L5 of the touch sensing keyboard 4 are not affected by the sliding or touching action of the finger, that is, when there is no touch signal, the touch signal converting unit 5 corresponds to each sensing key.
  • the conversion output outputs a high level VCC.
  • the output of the switching output corresponding to the sensing key on the touch signal converting unit 5 is 0 volts (GND); after the finger leaves When the touch signal disappears, the output of the conversion output terminal corresponding to the sensing key on the touch signal conversion unit 5 returns to the high level VCC. If there is a touch signal, go to step 105, otherwise go to step 103.
  • Step 103 the microprocessor control unit 6 detects its own delay of 10 seconds, if the counter count reaches 10 seconds, there is no touch signal to perform step 104; if the counter count does not reach 10 seconds, then step 102 is continued. Wait for the touch signal.
  • Step 104 Enter the power saving mode, start the microprocessor control unit 6 intermittently, and perform step 102.
  • Step 105 The microprocessor control unit 6 detects the lowest bit of its own (corresponding to the sensing key L1) to detect the input end, and checks whether there is a touch signal of the finger touching or touching the sensing key L1 for a long time. If yes, go to step 106; otherwise, go to step 107.
  • Step 106 The microprocessor control unit 6 detects its own power-on state flag storage unit. If the state of the power-on state flag storage unit is not turned on, the state of the unit is changed to be turned on, and the state of the first (lowest) gear indication state flag storage unit is set to 0 (lighting), and the other is Each gear indicates that the state of the status flag storage unit is set to 0 (off). If the state saved by the power-on state flag storage unit is turned on, the state of the unit is changed to not turned on, and the state of the first (lowest) gear indication state flag storage unit is set to 1 (off), and the other The status of the gear indication status flag storage unit is set to 0 (off). Go to step 118.
  • Step 107 The microprocessor control unit 6 detects its own power-on state flag storage unit. If the state saved by the power-on state flag storage unit is already powered on, step 108 is performed; otherwise, step 103 is performed.
  • Step 108 The microprocessor control unit 6 detects the lowest bit of its own (corresponding to the sensing key L1) to detect the input end, and checks whether there is a short-time sliding of the finger or a touch signal of the touch-sensitive key L1. If yes, go to step 109; otherwise, go to step 110.
  • Step 109 The microprocessor control unit 6 sets the state of the first (lowest) gear position indication flag storage unit to 0 (lighting), and sets the state of the other gear indication state flag storage units to 0 (off). ; Go to step 118.
  • Step 110 The microprocessor control unit 6 detects its own second (corresponding to the sensing key L2) detection input to check whether there is a finger touch or a touch signal of the touch key L2. If yes, go to step 111; otherwise, go to step 112.
  • Step 111 the microprocessor control unit 6 sets the state of the first (lowest) gear position indication flag storage unit to 0 (lighting), and sets the state of the second (second lowest) gear position indication flag storage unit to 1 (lights up), set the state of the other gear position indication flag storage units to 0 (off); go to step 118.
  • Step 112 The microprocessor control unit 6 detects its own third (corresponding to the sensing key L3) detection input to check whether there is a finger touch or a touch signal of the touch key L3. If yes, go to step 113; otherwise, go to step 114.
  • Step 113 the microprocessor control unit 6 sets the state of the first (lowest) gear position indication flag storage unit to 0 (lighting), and the second (lower) gear position indication state flag storage unit and the third ( The middle position indicates that the state of the status flag storage unit is set to 1 (lighting), and the status of the other status indication status flag storage units is set to 0 (off); step 118 is performed.
  • Step 114 The microprocessor control unit 6 detects its own fourth (corresponding to the sensing key L4) detection input to check whether there is a finger touch or a touch signal of the touch key L4. If yes, go to step 115; otherwise, go to step 116.
  • Step 115 the microprocessor control unit 6 sets the state of the first (lowest) gear position indication flag storage unit to 0 (lighting), and the second (lower) gear position indication state flag storage unit and the third ( The middle state of the gear position indication state flag storage unit and the fourth (second highest) gear position indication state flag storage unit is set to 1 (lighting), and the state of the fifth (highest) gear position indication state flag storage unit is set to 0 (off); go to step 118.
  • Step 116 The microprocessor control unit 6 detects its own fifth (corresponding to the sensing key L5) detection input to check whether there is a finger touch or a touch signal of the touch key L5. If yes, go to step 117; otherwise, go to step 103.
  • Step 117 the microprocessor control unit 6 sets the state of the first (lowest) gear position indication flag storage unit to 0 (lighting), and sets the state of the other gear position indication state flag storage units to 1 (lights up) ); Step 118 is performed.
  • Step 118 the microprocessor control unit 6 transmits the data of each gear position indication state flag storage unit to the gear position indicating unit 7 through the corresponding gear position control output, that is, the microprocessor control unit 6 to the gear position indicating unit 7
  • the current gear position control signal is sent to illuminate the LED indicator corresponding to the gear position indicating unit 7. Go to step 119.
  • the state flag storage unit is the highest bit in the fifth gear position, and the first gear position indicates that the state flag storage unit is the lowest bit.
  • the five groups of LED indicators are all off. If the data of each gear position indicating status flag storage unit is "00000”, that is, the first gear state, the first group of LED indicators are lit, and the other four groups of LED indicators are off. If the data of each gear position indicating status flag storage unit is "00000”, that is, the first gear state, the first group of LED indicators are lit, and the other four groups of LED indicators are off.
  • each gear position indicating status flag storage unit is "00010" or the second gear state
  • the first and second groups of LED indicators are lit, and the other three groups of LED indicators are off. If the data of each gear position indicating state storage unit is "00110" or the third gear state, the first, second, and third groups of LED indicators are lit, and the other two LED indicators are off. If the data of each gear position indicating state flag storage unit is "01110", that is, the fourth gear state, the first to fourth groups of LED indicators are lit, and the fifth group of LED indicators are off. If the data of each gear position indicating state flag storage unit is "11110" or the fifth gear state, the five groups of LED indicators are illuminated.
  • Step 119 the microprocessor control unit 6 converts the gear positions represented by the state data of each gear position indication flag storage unit into corresponding pulse width modulation signals, and transmits them to the driving unit 2 through the pulse width modulation signal output terminal PWM,
  • the control drive unit 2 cuts off the power supply of the LED main lamp 3 or supplies power to the LED main lamp 3 with an effective current that defines the gear position. Go to step 102.
  • the microprocessor control unit 6 sends a stable 0 volt level to the driving unit 2 through the pulse width modulation signal output terminal PWM.
  • the control drive unit 2 cuts off the power supply of the LED main lamp 3, and the LED main lamp 3 does not emit light. If the data of each gear position indicating state flag storage unit is "00000", that is, the first gear state, the microprocessor control unit 6 transmits the pulse having the longest 0-volt level period to the driving unit 2 through the pulse width modulation signal output terminal PWM.
  • the wide modulation signal controls the driving unit 2 to supply power to the LED main lamp 3 with an effective current of a predetermined first gear position, and the LED main lamp 3 emits light with the lowest brightness. If the data of each gear position indicating state flag storage unit is "00010" or the second gear state, the microprocessor control unit 6 sends a pulse of 0 volt level period to the driving unit 2 through the pulse width modulation signal output terminal PWM. The wide modulation signal controls the driving unit 2 to supply power to the LED main lamp 3 with an effective current of a predetermined second gear position, and the LED main lamp 3 emits light with the second lowest brightness.
  • the microprocessor control unit 6 transmits a medium-length pulse of 0 volt level period to the driving unit 2 through the pulse width modulation signal output terminal PWM.
  • the wide modulation signal controls the driving unit 2 to supply power to the LED main lamp 3 with an effective current of a predetermined third gear position, and the LED main lamp 3 emits light at a medium brightness. If the data of each gear position indicating state flag storage unit is "01110" or the fourth gear state, the microprocessor control unit 6 transmits the pulse of the 0 volt level period to the driving unit 2 through the pulse width modulation signal output terminal PWM.
  • the wide modulation signal controls the driving unit 2 to supply power to the LED main lamp 3 with an effective current of a predetermined fourth gear position, and the LED main lamp 3 emits light with the second highest brightness. If the data of each gear position indicating state flag storage unit is "11110" or the fifth gear state, the microprocessor control unit 6 sends a stable high level VCC signal to the driving unit 2 through the pulse width modulation signal output terminal PWM, and controls The driving unit 2 supplies power to the LED main lamp 3 with an effective current of a predetermined fifth gear position, and the LED main lamp 3 emits light with the highest brightness.
  • the dimming lamp of the invention has the advantages of simple and clear structure, clear functions of each unit, and easy implementation by integrated circuit modules, so that the service life and reliability are improved.
  • the touch-sensitive keyboard is used to comprehensively process the main light of the switch and adjust the brightness of the main light. The user can slide or touch each of the sensing keys with one finger to quickly complete the corresponding control and achieve a smooth operation interface. .

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Description

一种调光灯具 技术领域
本发明涉及一种照明灯具，特别是涉及一种使用发光二极管（LED）的照明灯具。
背景技术
现有白炽灯的灯具均采用调整电压的方式达到调光的目的。但是，对于使用发光二极管（LED）的灯具，则不适于采用调整电压的方式达到调光的目的。所以，业界尝试使用调整供应给发光二极管灯的脉动直流电的占空比的方式，改变供应给发光二极管灯的有效电流来达到调光的目的。例如，中国发明专利说明书CN 201114962Y公开了专利号为ZL 200720075227.8，名称为“触摸开关调光器”的技术方案，提出由开关部分电源模块向触摸信号控制模块和开关输出模块供电，触摸信号控制模块接收触摸感应键输入模块的操作信号后控制开关输出模块接通市电与调光部分电源模块的电连接；调光部分电源模块向调光模块和调光输出回路（驱动单元）供电，调光模块接收旋钮输入模块的操作信号后控制调光模块改变输出方波的脉宽，从而使调光输出回路供应给发光二极管灯的脉动直流电的占空比发生变化达到调光的目的。但是，该技术方案还存在有如下缺点：1，由触摸开关与旋钮联合实现控制，操作的便利性差。2，由开关部分电源模块、开关输出模块和调光部分电源模块组成内部的电源供应系统，结构繁琐且开关输出模块使用继电器，寿命和可靠性受到限制。因而，不适应各种高档次的家庭或服务场所使用。
发明内容
本发明旨在提供一种调光灯具，它的操作便利且结构简单、可靠。
本发明的技术方案是：一种调光灯具，电源模块向受脉宽调制信号控制的驱动单元供电，该驱动单元向主灯供电；电源模块向触摸信号转换单元和微处理器控制单元供电；触摸信号转换单元接收触控感应键盘各感应键提供的开关或档位感应信号并转换为对应的控制电位信号传送给微处理器控制单元；微处理器控制单元解析触摸信号转换单元提供的控制电位信号，向驱动单元发送对应的脉宽调制信号以控制驱动单元不向主灯供电或者以规定档位的有效电流向主灯供电。人的手指靠近触控感应键盘的某个感应键，触摸信号转换单元就会将对应的信号送给微处理器控制单元。由微处理器控制单元去控制驱动单元操纵主灯的开关动作及调光动作。
特别是：所述的电源模块向档位指示单元供电，微处理器控制单元向档位指示单元发送当前的档位控制信号，点亮档位指示单元对应的指示灯。使用者可以通过观察档位指示单元各指示灯直观地了解当前的档位状态，以确定是否需要进一步调整主灯的亮度。
在优化的实施结构中：所述的触摸信号转换单元为电容式触摸感应集成电路模块。电容式触摸感应集成电路模块与触控感应键盘各感应键及微处理器控制单元的连线简单，有利于组装生产；其使用寿命长且可靠性好。
特别是：所述的主灯为发光二极管灯。脉宽调制有效电流的供电方式最适合发光二极管灯的工作特性，可以充分发挥出发光二极管灯调光的潜能。
本发明调光灯具，采用一个电源模块向各单元供电，采用触摸信号转换单元接收触控感应键盘各感应键提供的开关或档位感应信号并转换为对应的控制电位信号传送给微处理器控制单元；微处理器控制单元解析触摸信号转换单元提供的控制电位信号，向驱动单元发送对应的脉宽调制信号以控制驱动单元向脉宽调制灯供电的状态。其结构简单明了、各单元功能明确，易于采用集成电路模块实施，所以有利于提高使用寿命和可靠性。特别是采用触控感应键盘，综合处理开关主灯和调整主灯亮度的功能，使用者用一个手指就可以滑触或点触各感应键，快速地完成相应的控制并达到平滑式的操作界面。
附图说明
图1为本发明调光灯具一个实施例的电路方框示意图。
图2为图1实施例中驱动单元的电路结构示意图。
图3为图1实施例中触控感应键盘、触摸信号转换单元和微处理器的电路连接关系示意图。
图4为图1实施例中档位指示单元的电路结构示意图。
图5为图1实施例微处理器控制单元的控制流程示意图。
具体实施方式
本发明调光灯具一个实施例的电路方框，如图1所示。该调光灯具为一个台灯。该台灯的壳体内设有一块电路板，该电路板上设有一个电源模块1、一个驱动单元2、一个触摸信号转换单元5和一个微处理器控制单元6。壳体的面板上设有一个触控感应键盘4和一个档位指示单元7。
电源模块1具有交流变压、整流和滤波电路，将交流市电（AC）转换为两路直流输出VIN、VCC;第一路直流输出VIN向驱动单元2供电，第二路直流输出VCC向触摸信号转换单元5、微处理器控制单元6和档位指示单元7供电。
驱动单元2的电路结构，如图2所示：驱动单元2的电源输入端即压敏电阻RP1的前端连接电源模块1的第一直流输出VIN。压敏电阻RP1的后端串接限流电阻R1后与由发光二极管组成的主灯3的一个电源端相连接。当然，主灯3也可以采用白炽灯。驱动单元2的控制输入端即偏置电阻R3与限流电阻R2的连接点与微处理器控制单元6的脉宽调制信号输出端PWM相连接。偏置电阻R3的另一端接地。限流电阻R2的另一端接场效应开关管Q1的栅极G。场效应开关管Q1的源极接地，漏极接发光二极管主灯3的另一个电源端。本实施例中场效应开关管Q1采用的型号为S2306。
请参看图3：
触控感应键盘4具有五个感应键L1、L2、L3、L4、L5。触控感应键盘4的各感应键L1、L2、L3、L4、L5分别为设置在两层绝缘材料之间相互隔离的铜箔条，每相邻的两个感应键构成一个电容。各感应键L1、L2、L3、L4、L5的引出线分别与触摸信号转换单元5对应的信号输入端相连接。
本实施例中触摸信号转换单元5采用阿尔法和平技术有限公司（alpha pacific Technologies Co.,Ltd）生产的型号为ap3018DN的电容式触摸感应集成电路模块。触摸信号转换单元5的信号输入端IN3、IN4、IN5、IN6、IN7分别顺序地对应连接感应键L1、L2、L3、L4、L5。触摸信号转换单元5上与各感应键L1、L2、L3、L4、L5对应的转换输出端Q3、Q4、Q5、Q6、Q7分别与微处理器控制单元6的各检测输入端对应连接。触摸信号转换单元5的转换输出端Q3、Q4、Q5、Q6、Q7与直流电源VCC之间分别设有电阻R501、R502、R503、R504、R505。
微处理器控制单元6为常规的微处理器, 本实施例中采用SN8P2501。该微处理器6的各检测输入端P2.2、P2.1、P2.0、P1.3 、P1.1分别顺序地对应连接触摸信号转换单元5的转换输出端Q3、Q4、Q5、Q6、Q7。微处理器6的各输出端P2.3、P2.4、P2.5、P0.0 、P1.0分别顺序地作为第一档位控制输出LED1、第二档位控制输出LED2、第三档位控制输出LED3、第四档位控制输出LED4、第五档位控制输出LED5对应连接档位指示单元7的各档位输入端。微处理器6的输出端P5.4作为脉宽调制信号输出端PWM连接驱动单元2的控制输入端。
档位指示单元7的电路结构，如图4所示：档位指示单元有五组发光二极管指示灯。
第一组发光二极管指示灯只有一个发光二极管D11,该发光二极管D11和限流电阻R11串接在电源模块1的第二直流输出VCC与微处理器控制单元6的第一档位控制输出LED1之间。
第二组发光二极管指示灯有两只发光二极管D21、D22。由晶体管Q2、偏置电阻R21和限流电阻R22组成第二组发光二极管指示灯的供电开关。晶体管Q2的发射极连接电源模块1的第二直流输出VCC与偏置电阻R21的一端；晶体管Q2的基极连接偏置电阻R21的另一端和限流电阻R22的后端。微处理器控制单元6的第二档位控制输出LED2连接该供电开关的控制输入端即限流电阻R22的前端。晶体管Q2的集电极连接两只发光二极管D21、D22的正极。两只发光二极管D21、D22的负极分别通过各自的限流电阻R23、R24接地。
第三组发光二极管指示灯有两只发光二极管D31、D32。由晶体管Q3、偏置电阻R31和限流电阻R32组成第三组发光二极管指示灯的供电开关。微处理器控制单元6的第三档位控制输出LED3连接该供电开关的控制输入端即限流电阻R32的前端。
第四组发光二极管指示灯有两只发光二极管D41、D42。由晶体管Q4、偏置电阻R41和限流电阻R42组成第四组发光二极管指示灯的供电开关。微处理器控制单元6的第四档位控制输出LED4连接该供电开关的控制输入端即限流电阻R42的前端。
第五组发光二极管指示灯有两只发光二极管D51、D52。由晶体管Q5、偏置电阻R51和限流电阻R52组成第五组发光二极管指示灯的供电开关。微处理器控制单元6的第五档位控制输出LED5连接该供电开关的控制输入端即偏置电阻R52的前端。
本实施例工作过程中微处理器控制单元6的控制流程，如图5所示：
步骤101；台灯上电，交流市电向电源模块1供电。电源模块1的第一路直流输出VIN向驱动单元2供电，第二路直流输出VCC向触摸信号转换单元5、微处理器控制单元6和档位指示单元7供电。
步骤102；微处理器控制单元6检测自身的各检测输入端，查看是否有触摸信号。在触控感应键盘4的各感应键L1、L2、L3、L4、L5未受到手指的滑触或按触作用影响时，即没有触摸信号时，触摸信号转换单元5上与各感应键对应的转换输出端均输出高电平VCC。而当任一个感应键受到手指的滑触或按触作用影响时，即有触摸信号时，触摸信号转换单元5上与该感应键对应的转换输出端输出为0伏（GND）；手指离开后，即触摸信号消失时，该触摸信号转换单元5上与该感应键对应的转换输出端的输出恢复为高电平VCC。有触摸信号，转步骤105，否则执行步骤103。
步骤103；微处理器控制单元6检测自身的延迟10秒钟的计数器，若计数器的计数达到10秒钟还没有触摸信号执行步骤104；若计数器的计数未达到10秒钟则转步骤102，继续等待触摸信号。
步骤104；进入省电模式，间歇式地启动微处理器控制单元6，执行步骤102。
步骤105；微处理器控制单元6检测自身的最低位（与感应键L1对应）检测输入端，查看是否有手指长时间滑触或按触感应键L1的触摸信号。有则执行步骤106；否则转步骤107。
步骤106；微处理器控制单元6检测自身的开机状态标志存储单元。若开机状态标志存储单元保存的状态为未开机，则将该单元的状态改为已开机，并将第一（最低）档位指示状态标志存储单元的状态置为0（点亮），将其它各档位指示状态标志存储单元的状态置为0（熄灭）。若开机状态标志存储单元保存的状态为已开机，则将该单元的状态改为未开机，并将第一（最低）档位指示状态标志存储单元的状态置为1（熄灭），将其它各档位指示状态标志存储单元的状态置为0（熄灭）。执行步骤118。
步骤107；微处理器控制单元6检测自身的开机状态标志存储单元。若开机状态标志存储单元保存的状态为已开机，则执行步骤108，否则转步骤103。
步骤108；微处理器控制单元6检测自身的最低位（与感应键L1对应）检测输入端，查看是否有手指短时间滑触或按触感应键L1的触摸信号。有则执行步骤109；否则转步骤110。
步骤109；微处理器控制单元6将第一（最低）档位指示状态标志存储单元的状态置为0（点亮），将其它各档位指示状态标志存储单元的状态置为0（熄灭）；执行步骤118。
步骤110；微处理器控制单元6检测自身的第二（与感应键L2对应的）检测输入端，查看是否有手指滑触或按触感应键L2的触摸信号。有则执行步骤111；否则转步骤112。
步骤111；微处理器控制单元6将第一（最低）档位指示状态标志存储单元的状态置为0（点亮），将第二（次低）档位指示状态标志存储单元的状态置为1（点亮），将其它各档位指示状态标志存储单元的状态置为0（熄灭）；执行步骤118。
步骤112；微处理器控制单元6检测自身的第三（与感应键L3对应的）检测输入端，查看是否有手指滑触或按触感应键L3的触摸信号。有则执行步骤113；否则转步骤114。
步骤113；微处理器控制单元6将第一（最低）档位指示状态标志存储单元的状态置为0（点亮），将第二（次低）档位指示状态标志存储单元和第三（中间）档位指示状态标志存储单元的状态置为1（点亮），将其它各档位指示状态标志存储单元的状态置为0（熄灭）；执行步骤118。
步骤114；微处理器控制单元6检测自身的第四（与感应键L4对应的）检测输入端，查看是否有手指滑触或按触感应键L4的触摸信号。有则执行步骤115；否则转步骤116。
步骤115；微处理器控制单元6将第一（最低）档位指示状态标志存储单元的状态置为0（点亮），将第二（次低）档位指示状态标志存储单元和第三（中间）档位指示状态标志存储单元及第四（次高）档位指示状态标志存储单元的状态置为1（点亮），将第五（最高）档位指示状态标志存储单元的状态置为0（熄灭）；执行步骤118。
步骤116；微处理器控制单元6检测自身的第五（与感应键L5对应的）检测输入端，查看是否有手指滑触或按触感应键L5的触摸信号。有则执行步骤117；否则转步骤103。
步骤117；微处理器控制单元6将第一（最低）档位指示状态标志存储单元的状态置为0（点亮），将其它各档位指示状态标志存储单元的状态置为1（点亮）；执行步骤118。
步骤118；微处理器控制单元6将自身的各档位指示状态标志存储单元的数据通过对应的档位控制输出输送给档位指示单元7，即微处理器控制单元6向档位指示单元7发送当前的档位控制信号，点亮档位指示单元7对应的发光二极管指示灯。执行步骤119。
我们规定以第五档位指示状态标志存储单元为最高位，第一档位指示状态标志存储单元为最低位。在本步骤中：若各档位指示状态标志存储单元的数据为“00001”即关机状态，五组发光二极管指示灯均处于熄灭状态。若各档位指示状态标志存储单元的数据为“00000”即第一档位状态，第一组发光二极管指示灯点亮，其余四组发光二极管指示灯均处于熄灭状态。若各档位指示状态标志存储单元的数据为“00000”即第一档位状态，第一组发光二极管指示灯点亮，其余四组发光二极管指示灯均处于熄灭状态。若各档位指示状态标志存储单元的数据为“00010”即第二档位状态，第一和第二组发光二极管指示灯点亮，其余三组发光二极管指示灯处于熄灭状态。若各档位指示状态标志存储单元的数据为“00110”即第三档位状态，第一、第二、第三组发光二极管指示灯点亮，其余两组发光二极管指示灯处于熄灭状态。若各档位指示状态标志存储单元的数据为“01110”即第四档位状态，第一至第四组发光二极管指示灯点亮，第五组发光二极管指示灯处于熄灭状态。若各档位指示状态标志存储单元的数据为“11110”即第五档位状态，五组发光二极管指示灯均点亮。
步骤119；微处理器控制单元6将各档位指示状态标志存储单元的状态数据代表的档位转换为对应的脉宽调制信号，并通过脉宽调制信号输出端PWM向驱动单元2发送，以控制驱动单元2切断发光二极管主灯3的供电或以规定该档位的有效电流向发光二极管主灯3供电。执行步骤102。
在本步骤中：若各档位指示状态标志存储单元的数据为“00001”即关机状态，微处理器控制单元6通过脉宽调制信号输出端PWM向驱动单元2发送稳定的0伏电平，控制驱动单元2切断发光二极管主灯3的供电，发光二极管主灯3不发光。若各档位指示状态标志存储单元的数据为“00000”即第一档位状态，微处理器控制单元6通过脉宽调制信号输出端PWM向驱动单元2发送0伏电平时段最长的脉宽调制信号，控制驱动单元2以规定的第一档位的有效电流向发光二极管主灯3供电，发光二极管主灯3以最低的亮度发光。若各档位指示状态标志存储单元的数据为“00010”即第二档位状态，微处理器控制单元6通过脉宽调制信号输出端PWM向驱动单元2发送0伏电平时段次长的脉宽调制信号，控制驱动单元2以规定的第二档位的有效电流向发光二极管主灯3供电，发光二极管主灯3以次低的亮度发光。若各档位指示状态标志存储单元的数据为“00110”即第三档位状态，微处理器控制单元6通过脉宽调制信号输出端PWM向驱动单元2发送0伏电平时段中等长度的脉宽调制信号，控制驱动单元2以规定的第三档位的有效电流向发光二极管主灯3供电，发光二极管主灯3以中等的亮度发光。若各档位指示状态标志存储单元的数据为“01110”即第第四档位状态，微处理器控制单元6通过脉宽调制信号输出端PWM向驱动单元2发送0伏电平时段最短的脉宽调制信号，控制驱动单元2以规定的第四档位的有效电流向发光二极管主灯3供电，发光二极管主灯3以次高的亮度发光。若各档位指示状态标志存储单元的数据为“11110”即第五档位状态，微处理器控制单元6通过脉宽调制信号输出端PWM向驱动单元2发送稳定的高电平VCC信号，控制驱动单元2以规定的第五档位的有效电流向发光二极管主灯3供电，发光二极管主灯3以最高的亮度发光。
以上所述，仅为本发明较佳实施例。然而，不以此限定本发明实施的范围，依本发明的技术方案及说明书内容所作的等效变化与修饰，皆应属于本发明涵盖的范围。
工业实用性
本发明调光灯具，其结构简单明了、各单元功能明确，易于采用集成电路模块实施，所以有利于提高使用寿命和可靠性。特别是采用触控感应键盘，综合处理开关主灯和调整主灯亮度的功能，使用者用一个手指就可以滑触或点触各感应键，快速地完成相应的控制并达到平滑式的操作界面。

Claims (8)

  1. 一种调光灯具，包括：电源模块、驱动单元、触摸信号转换单元、微处理器控制单元；电源模块向受脉宽调制信号控制的驱动单元供电，该驱动单元向主灯供电；同时，电源模块向触摸信号转换单元和微处理器控制单元供电；触摸信号转换单元接收触控感应键盘各感应键提供的开关及档位感应信号，并转换为对应的控制电位信号传送给微处理器控制单元；微处理器控制单元解析触摸信号转换单元提供的控制电位信号，向驱动单元发送对应的脉宽调制信号以控制驱动单元不向主灯供电或者以规定档位的有效电流向主灯供电。
  2. 根据权利要求1所述的一种调光灯具，其特征在于：还包括档位指示单元，所述的电源模块向档位指示单元供电，微处理器控制单元向档位指示单元发送当前的档位控制信号，点亮档位指示单元对应的指示灯。
  3. 根据权利要求1或2所述的一种调光灯具，其特征在于：所述的触摸信号转换单元为电容式触摸感应集成电路模块。
  4. 根据权利要求1或2所述的一种调光灯具，其特征在于：所述的主灯为发光二极管灯。
  5. 一种灯具的调光方法，电源模块向受脉宽调制信号控制的驱动单元供电，该驱动单元向主灯供电；
    同时，电源模块向触摸信号转换单元和微处理器控制单元供电；触摸信号转换单元接收触控感应键盘各感应键提供的开关及档位感应信号，并转换为对应的控制电位信号传送给微处理器控制单元；
    微处理器控制单元解析触摸信号转换单元提供的控制电位信号，向驱动单元发送对应的脉宽调制信号以控制驱动单元不向主灯供电或者以规定档位的有效电流向主灯供电。
  6. 根据权利要求5所述的一种灯具的调光方法，其特征在于：主灯供电，进入省电模式，间歇式地启动微处理器控制单元。
  7. 根据权利要求6所述的一种灯具的调光方法，其特征在于：所述的微处理器控制单元检测自身的各检测输入端，查看是否有触摸信号，向驱动单元发送对应的脉宽调制信号以控制驱动单元不向主灯供电或者以规定档位的有效电流向主灯供电。
  8. 根据权利要求7所述的一种灯具的调光方法，其特征在于：微处理器控制单元向档位指示单元发送当前的档位控制信号，点亮档位指示单元对应的指示灯。
PCT/CN2010/073960 2009-06-17 2010-06-13 一种调光灯具 WO2010145535A1 (zh)

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