WO2012062181A1

WO2012062181A1 - Dimming lamp

Info

Publication number: WO2012062181A1
Application number: PCT/CN2011/081769
Authority: WO
Inventors: 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: 2010-11-08
Filing date: 2011-11-04
Publication date: 2012-05-18
Also published as: CN201887980U

Abstract

Disclosed is a dimming lamp. A power supply module (1) of the dimming lamp supplies power to a drive unit (2) controlled by a pulse-width modulation signal; the drive unit (2) supplies power to a primary lamp (3); the power supply module (1) supplies power to a touch signal conversion unit (5) and a microprocessor control unit (6); the touch signal conversion unit (5) receives the on/off and power-level signals from each sensor key of the touch induced keypad (4), and converts the signals into corresponding control potential signals to send to the microprocessor control unit (6); the microprocessor control unit (6) resolves the control potential signals provided by the touch signal conversion unit (5) and sends the corresponding pulse-width modulation signal to the drive unit (2), to control the drive unit (2) to not supply power to the primary lamp (3) or to supply power to the primary lamp (3) at the effective current level of a specific power level. This invention solves the problem of operational inconvenience and structural complexity.

Description

Dimming light fixture

Technical field

The present invention relates to a lighting fixture, and more particularly to a lighting fixture using a light emitting diode (LED).

Background technique

The lamps of the existing incandescent lamps all adopt the method of adjusting the voltage to achieve the purpose of dimming. However, for 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. For example, 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. Turning on the electrical connection between the mains and the dimming part of the power 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. However, 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. 2. 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.

Summary of the invention

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 simultaneously supplies power to the touch signal conversion unit and the microprocessor control unit. The input port of the touch signal conversion unit is connected to the touch sensing keyboard, and the output port of the touch signal conversion unit is connected to the input port of the microprocessor control unit; the output port of the microprocessor control unit is connected to the input port of the drive 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. When the human finger is close to a sensing button of the touch sensing keyboard, 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.

In particular, the power supply module supplies power to the gear position indicating unit, and the other output port of the microprocessor control unit is connected to the input port of 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.

In an optimized implementation structure, 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.

In particular: 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. In particular, 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. .

DRAWINGS

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a block diagram showing the circuitry of an embodiment of a dimming luminaire of the present invention.

2 is a schematic diagram showing the circuit structure of a driving unit in the embodiment of FIG. 1.

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.

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.

detailed description

Embodiment 1, as shown in FIG. 1, a dimming lamp is a table lamp, and a circuit board is disposed in a casing of the lamp. The circuit board is provided with a power module 1, a driving unit 2, and 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 input port of the touch signal conversion unit 5 is connected to the touch sensitive keyboard 4, and the output port of the touch signal conversion unit 5 is connected to the input port of the microprocessor control unit 6; the output port of the microprocessor control unit 6 is connected to the input port of the drive unit 2. . A further output port of the microprocessor control unit 6 is coupled to the input port of the gear position indicating unit 7. The drive unit 2 supplies power to the main lamp 3.

The circuit structure of the driving unit 2 is as shown in FIG. 2. The driving unit 2 includes a varistor PR1, a current limiting resistor R1, a current limiting resistor R2, a biasing resistor R3, and a field effect switch Q1.

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. Of course, the main lamp 3 can also use an incandescent lamp. The control input of the drive 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. In the embodiment, the field effect switch tube Q1 is of the type S2306.

Please refer to FIG. 3: 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.

The microprocessor control unit 6 is a conventional microprocessor. In this embodiment, 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 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 takes the five-speed selection sensing key as an example, 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. When 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. When any of the sensing keys is affected by the sliding or touching action of the finger, that is, when there is a touch signal, 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.

We stipulate that 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. In this step: if each gear indicates that the data of the status flag storage unit is "00001", that is, the power-off state, 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. If the data of 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 the signals to the driving unit 2 through the pulse width modulation signal output terminal (PWM). To control the driving unit 2 to cut off the power supply of the LED main lamp 3 or to supply power to the LED main lamp 3 with an effective current of the gear position. Go to step 102.

In this step: if the data of each gear position indicating state flag storage unit is "00001", that is, the power-off state, the microprocessor control unit 6 sends a stable 0 volt power to the driving unit 2 through the pulse width modulation signal output terminal (PWM). In the flat state, the control driving 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 0 volt level period to the driving unit 2 through the pulse width modulation signal output terminal (PWM). The pulse width 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 0 volt level period to the driving unit 2 through the pulse width modulation signal output terminal (PWM). The pulse width 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. If the data of each gear position indicating state flag storage unit is "00110", that is, the third gear state, the microprocessor control unit 6 transmits a medium volt level period to the driving unit 2 through the pulse width modulation signal output terminal (PWM). The pulse width 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 with 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 sends the 0 volt level period to the driving unit 2 through the pulse width modulation signal output terminal (PWM). The pulse width 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", that is, 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). The control 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.

As described above, for the preferred embodiment of the present invention, the sensing keys of the touch sensitive keyboard 4 may be two (ie, two gear positions) or more, and the corresponding corresponding microprocessor control unit detects the number of times of detecting input terminals thereof. Match it.

Industrial applicability

The dimming lamp of the invention has a microprocessor control unit transmitting a corresponding pulse width modulation signal to the driving unit according to the control of the touch sensing keyboard to control the driving unit not to supply power to the main lamp or to the main current of the specified gear position. The lamp is powered. The problem of poor operation convenience and complicated structure is solved.

Claims

A dimming lamp comprises a power module, a driving unit and a main lamp, wherein the power module supplies power to a driving unit controlled by the pulse width modulation signal, and the driving unit supplies power to the main lamp; and the method further comprises: a touch sensing keyboard and a touch Signal conversion unit, microprocessor unit;

The power module simultaneously supplies power to the touch signal conversion unit and the microprocessor control unit; the input port of the touch signal conversion unit is connected to the touch sensing keyboard, and the output port of the touch signal conversion unit is connected to the input port of the microprocessor control unit; the microprocessor controls The output port of the unit is connected to the input port of the drive unit.
A dimming light fixture according to claim 1, further comprising a gear position indicating unit, wherein said power supply module supplies power to the gear position indicating unit at the same time, and another output port of the microprocessor control unit is connected to the gear position. Indicates the input port of the unit.
A dimming lamp according to claim 1 or 2, wherein the touch signal conversion unit is a capacitive touch sensing integrated circuit module.
A dimming lamp according to claim 1 or 2, wherein the main lamp is a light-emitting diode lamp.
The dimming lamp according to claim 1 or 2, wherein the driving unit comprises: a varistor PR1, a current limiting resistor R1, a current limiting resistor R2, a biasing resistor R3, and a field effect switch Q1. ;

The power input end of the driving unit, that is, the front end of the varistor RP1 is connected to the power supply module, and the rear end of the varistor RP1 is connected in series with the current limiting resistor R1 and connected to a power supply end of the main lamp composed of the light emitting diode; the control of the driving unit The input terminal, that is, the connection point of the bias resistor R3 and the current limiting resistor R2 is connected with the output end of the microprocessor control unit; the other end of the current limiting resistor R2 is connected to the gate of the field effect switching transistor Q1, and the field effect switching transistor Q1 The source is grounded and the drain is connected to the other power supply terminal of the LED main lamp.
A dimming lamp according to claim 1 or 2, wherein the dimming method comprises:

Step 101: The desk lamp is powered on, and the AC mains supply power to the power module; the first path of the power module supplies power to the driving unit, and the second channel supplies power to the touch signal conversion unit, the microprocessor control unit, and the gear position indicating unit;

Step 102: The microprocessor control unit detects each detection input end of the microprocessor to check whether there is a touch signal: when there is no touch signal, the conversion output end corresponding to each sensing key on the touch signal conversion unit outputs a high level VCC; When signal, the conversion output terminal corresponding to the sensing key on the touch signal conversion unit outputs 0 volt; if there is a touch signal, go to step 105, otherwise step 103 is performed;

Step 103: The microprocessor control unit detects a counter whose own delay is 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 the process proceeds to step 102 and continues to wait. Touch signal

Step 104; enter the power saving mode, intermittently start the microprocessor control unit, step 102;

Step 105; the microprocessor control unit detects its own lowest position detection input, to see if there is a finger touch for a long time or press the touch signal of the touch key, if yes, go to step 106; otherwise, go to step 107;

Step 106: The microprocessor control unit detects its own power-on state flag storage unit; if the state saved by the power-on state flag storage unit is not powered on, the state of the unit is changed to be turned on, and the first gear indicates the status flag. The state of the storage unit is set to 0 (lighting), and the status of the other status indication status flag storage unit is set to 0 (off); if the status of the power-on status flag storage unit is turned on, the status of the unit is Change to not power on, and set the state of the first gear position status flag storage unit to 1 (off), set the status of the other gear status flag storage unit to 0 (off); go to step 118;

Step 107; the microprocessor control unit detects its own boot state flag storage unit; if the boot state flag storage unit saves the state is turned on, step 108 is performed, otherwise proceeds to step 103;

Step 108: The microprocessor control unit detects its own lowest position detection input terminal to check whether there is a touch signal of the finger sliding for a short time or pressing the touch key. If yes, go to step 109; otherwise, go to step 110;

Step 109: The microprocessor control unit sets the state of the first gear position indication flag storage unit to 0 (lighting), and sets the state of the other gear position indication state flag storage unit to 0 (off); ;

Step 110; the microprocessor control unit detects its own second detection input, to see whether there is a finger touch or press the touch signal of the touch key; if yes, go to step 111; otherwise, go to step 112;

Step 111: The microprocessor control unit sets the state of the first gear position indication flag storage unit to 0 (lighting), and sets the state of the second gear position indication flag storage unit to 1 (lights), and the other Each gear position indication state flag storage unit is set to 0 (off); step 118 is performed;

Step 112; the microprocessor control unit detects its own third detection input, to see if there is a finger touch or touch the touch button touch signal; if yes, go to step 113; otherwise go to step 114;

Step 113: The microprocessor control unit sets the state of the first gear position indication flag storage unit to 0 (lighting), and the second gear position indication state flag storage unit and the third gear position indication state flag storage unit state Set to 1 (lights up), set the status of the other status indication status flag storage units to 0 (off); go to step 118;

Step 114; the microprocessor control unit detects its own fourth detection input terminal to check whether there is a finger touch or a touch signal of the touch key; if yes, go to step 115; otherwise, go to step 116;

Step 115: The microprocessor control unit sets the state of the first gear position indication flag storage unit to 0 (lighting), the second gear position indication flag storage unit, and the third gear position indication flag storage unit and the The state of the fourth gear indication state flag storage unit is set to 1 (lighting), and the state of the fifth gear position indicating flag storage unit is set to 0 (off); step 118 is performed;

Step 116; the microprocessor control unit detects its own fifth detection input, to see whether there is a finger touch or touch the touch button touch signal; if yes, go to step 117; otherwise, go to step 103;

Step 117: The microprocessor control unit sets the state of the first gear position indication flag storage unit to 0 (lighting), and sets the state of the other gear position indication state flag storage unit to 1 (lights); 118;

Step 118: The microprocessor control unit sends the data of each gear position indication state storage unit to the gear position indication unit through the corresponding gear position control output, that is, the microprocessor control unit sends the current file to the gear position indication unit. a bit control signal, illuminating the LED indicator corresponding to the gear position indicating unit; performing step 119;

Step 119: The microprocessor control unit converts the gear position represented by the state data of each gear position indication flag storage unit into a corresponding pulse width modulation signal, and sends the pulse width modulation signal output end to the driving unit to control the driving unit. The power supply of the LED main unit is cut off or the effective current of the gear position is supplied to the LED main lamp; step 102 is performed.
A dimming light fixture according to the invention is characterized in that: the touch sensitive keyboard has more than two sensing keys, and the corresponding microprocessor control unit detects the number of its own detection input terminals to match it.