WO2019222920A1

WO2019222920A1 - Single-chip microcomputer controlled light tuning method and system based on on-off input

Info

Publication number: WO2019222920A1
Application number: PCT/CN2018/087877
Authority: WO
Inventors: 唐春荣
Original assignee: 深圳市杜莎科技有限公司
Priority date: 2018-05-22
Filing date: 2018-05-22
Publication date: 2019-11-28
Also published as: CN111226505A

Abstract

Disclosed are a single-chip microcomputer controlled light tuning method and system based on an on-off input. Said system comprises: an apparatus for starting an LED light source, configured to receive on-off and turning-off sent by a user and start within a preset time; a programmable controller, configured to determine whether to turn-on after turn-off is performed within a preset time, and output a varying working power according to a preset change rule, or save a working power P1 after having received an on-off signal, from a user, to turn-off, and output the P1 at the next turning-on; a power supply unit, configured to receive the working power P1 sent by the programmable controller; the LED light source, configured to receive the working power P1 outputted from the power supply unit and to light. The present invention enables, by the actions of "turn-off" and "turn-on" at a single time, a light tuning module to drive the light source to change within a 1-100% light tuning accuracy range so that a user can obtain a desired light brightness, which is automatically memorized and saved, improving the practicality and convenience of the light tuning method, and therefore the invention has prominent substantive advantages.

Description

[Corrected according to Rule 91. 20.09.2019] A switch input, single-chip computer-controlled dimming method and system

Technical field

[Corrected under Rule 91. 20.09.2019]
The invention relates to the technical field of LED light sources, in particular to a dimming method and system controlled by a switch input and a single-chip microcomputer.

Background technique

LED has the characteristics of energy saving, environmental protection, long life, small size, etc., and is widely used. People hope to be able to adjust the brightness of the light source during use. This will not only save power and reduce waste, but also avoid long-term operation of LED lights under overload. Improved LED operating efficiency and service life.

At present, some LED lamps or LED light sources on the market have dimming functions. The dimming methods include:

(1) Triac dimming. This method requires special custom-made LED lamps and knob switches that are specially installed and matched with the thyristor dimming method. The installation cost is high and troublesome.

(2) Remote control switch dimming. This method requires a driver for the remote control to be installed on the luminaire. Once there is no remote control, dimming cannot be achieved, and the cost is high.

(3) Dimming method based on integrated IC control circuit. Although this method does not require additional equipment configuration, it needs to be turned on and off multiple times within the set time (usually 0-2 seconds), and there is no memory function. The setting must be repeated before each use, which is troublesome to use and has a poor user experience. .

(4) 0-10v / 1-10v dimming, which requires additional dimmers and additional cables, which is costly, and each use starts from the off, and adjusts from the minimum power or maximum power to the required dimming brightness;

(5) Resistor dimming requires external potentiometers and cannot control multiple lights at one time;

Therefore, how to solve various problems existing in the existing LED dimming methods, and design a dimming method that is more convenient to operate has become a subject of focus for those skilled in the art.

technical problem

The technical problem to be solved by the present invention is to provide a switching input and a single-chip computer-controlled dimming method and system for various problems of the existing dimming methods. The method saves the working power P at any time, For power usage, when dimming is needed, just turn the switch off and then turn it on within a few seconds (preset time). The brightness change can be adjusted from the last working power P, and it can be saved when the brightness is deemed appropriate. , You can adjust the brightness of the LED light source, which makes the adjustment more simple and practical.

Technical solutions

The technical solution adopted by the present invention for solving the above technical problems is: a switch input and a single-chip computer-controlled dimming method, which is characterized by including: S101, receiving a user's request to start an LED light source, and according to the last working power P1 of the LED light source Light the LED light source for the initial working power value; S102, if the user needs to adjust the brightness of the LED light source and start to switch the dimming mode, the LED light source enters the adjustable mode after it is turned on. At this time, the brightness of the LED light source is changed from the last working power. The value of P1 is gradually changed according to a preset method; S103, the user adjusts the LED light source to a working power P2 corresponding to the brightness, and starts confirmation. The LED light source stores the working power P2 as an initial working power of the next time the LED light source starts.

The preferred solution is that step S102 further includes step S104. If the user does not meet the conditions for switching the dimming mode, the LED light source operates at the initial power P1.

Among them, the preferred solution is that the steps S101, S102 and 103 are performed cyclically, the initial power of the LED light source after one cycle is P1, the initial power of the LED light source after the second cycle is P2, and so on, and the Nth time the LED light source is turned on The initial power at this time is the working power Pn-1 at the N-1th time.

Among them, the preferred solution is: the user's request to start the LED light source in step S101 can be started by a switch.

Among them, the preferred solution is that the switching condition of the dimming mode in step S102 may be: the time interval between turning off and turning on is less than N seconds.

Among them, the preferred solution is: the preset method in step S102 is "gradually decreasing brightness from P1 value to zero brightness", or "gradually increasing from P1 value to highest brightness", the preset method is 1% accuracy, 5 The rate changes in% / second, stays for a preset time when it reaches the maximum value, and then cyclically changes.

The invention also provides a dimming system controlled by a switch input and a single chip microcomputer, which is characterized by comprising: a device for starting an LED light source for receiving a switch sent by a user and turning it off within a preset time; a programmable controller, Determine whether the opening is within a preset time after closing and output the variable working power according to the preset change law; or save the working power P1 after receiving the switch signal closed by the user, and output as P1 next time the power is turned on; The working power P1 sent by the programmable controller is described; the LED light source, the working power P1 received by the power supply unit is turned on.

Among them, a preferred solution is that the device for starting the LED light source is a pull switch, a sluice switch, a push button switch, a microwave control switch, a radio frequency control switch, a sound control switch or an infrared switch.

Among them, the preferred solution is that the power supply unit outputs constant current DC power.

Beneficial effect

The invention combines a programmable controller and a constant current power source with existing LED light sources and control switches, so that the LED dimming accuracy can be arbitrarily adjusted within the range of 1-100%, breaking the bottleneck of brightness adjustment, and greatly improving the dimming method. Practicality and convenience, has outstanding substantial advantages.

BRIEF DESCRIPTION OF THE DRAWINGS

The present invention will be further described below with reference to the accompanying drawings and embodiments. In the drawings:

FIG. 1 is a flowchart of a first embodiment of the present invention;

2 is a flowchart of a second embodiment of the present invention;

Figure 3 is a schematic diagram of the system of the present invention.

Best Mode of the Invention

In the following, the technical solutions in the embodiments of the present invention will be clearly and completely described with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the implementation manners. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work fall into the protection scope of the present invention.

Embodiments of the present invention provide a dimming method and system controlled by a switch input and a single-chip microcomputer.

Referring to FIG. 1, the method includes:

S101. Receive a user's request to start an LED light source, and light up the LED light source according to the last working power P1 value of the LED light source;

The last working power P1 value of the LED light source is stored in the dimmable system.

In S102, if the user needs to adjust the brightness of the LED light source and start to switch the dimming mode, the LED light source enters the adjustable mode after being turned on. At this time, the brightness of the LED light source gradually changes from the last working power P1 value according to a preset manner.

S103. The user adjusts the LED light source to a working power P2 corresponding to a suitable brightness, and starts confirmation. The LED light source stores the working power P2.

The steps S101, S102, and S103 can be performed cyclically. The steps S101, S102 and 103 are performed cyclically, the initial power of the LED light source after one cycle is P1, the initial power of the LED light source after the second cycle is P2, and so on, and the initial power of the Nth time when the LED light source is turned on is the first N-1 times working power Pn-1.

Wherein, the request of the user to start the LED light source in the step S101 may be started through a switch.

It should be noted that the preset method may be "gradually decreasing brightness from P1 value to zero brightness", or "gradually increasing from P1 value to maximum brightness", gradually brightening or darkening, to give a description, Scheme 1 : Change with 1% accuracy and 5% / sec rate, according to user setting-> plus 1% (<50%); according to user setting-> minus 1% (≥50%); stay at the maximum value Pre-set time, and then cyclical changes, as long as the brightness of the LED light source can be changed through a certain rule. Option 2: Change with 0.5% accuracy and 3% / second rate, user setting-> plus 0.5% (<50%); user setting-> minus 0.5% (≥50%); stay at the maximum value Pre-set time, and then cyclical changes, as long as the brightness of the LED light source can be changed through a certain rule. No more exhausting here.

In step S102, if the switching condition is not satisfied during the switching of the switch from off to on, the LED light source is turned on according to the output power of the P1 value of the last time the light source is turned on after the LED light source is turned on.

As can be seen from the above, a switching input, single-chip computer-controlled dimming method of the present invention combines a programmable controller and a constant current power supply with existing LED light sources and control switches, so that the LED dimming accuracy is within the range of 1-100%. It can be adjusted arbitrarily to break the bottleneck of brightness adjustment, which greatly improves the practicability and convenience of the dimming method, and has outstanding substantial advantages.

Specifically, the dimming switching in step S102 may be a time interval between turning off the signal and turning on the LED light source, and the preset range is 0-N seconds.

As shown in Figure 2: For example, when the user presses the button switch for the first time to turn on the LED light source, the last time the LED light source is turned off with a brightness of 15% and the corresponding power value is P1. The LED light source enters the first working mode. At this time, the LED The brightness of the light source is 15%. If you need to change the brightness of the LED light source, you only need to turn the button switch off and then on again to turn the LED light source off and on. At the same time, you must ensure that the recognition time between turning off and turning on the light is a preset time of 0-N seconds. It will enter the adjustable mode. At this time, it is adjusted with 1% accuracy and 5% per second. The user can start the adjustment from the power P1; stay at the maximum value for 3 seconds, and then reverse the cycle as long as it can pass. A certain rule can change the brightness of the LED light source, and keep cycling. If you find a suitable brightness, you can automatically save and save the second power P2 with a brightness of 50% if you turn off the switch. The light source will automatically display the Secondary power P2, brightness 50%, no need to repeat setting again.

In addition, the present invention also includes a dimming system controlled by a switch input and a single-chip microcomputer, as shown in FIG. 2: A dimming system controlled by a single-chip microcomputer is shown in FIG. 2

The system 10 includes: a device 11 for starting an LED light source for receiving an on or dimming signal sent by a user; a programmable controller 12 for storing a working power P selected by the LED light source in real time and sending it to a power source unit; a power source The unit 13 receives the working power P sent by the programmable controller; the LED light source 14 receives the working power output by the power supply unit and is turned on.

Wherein, the device 11 for starting the LED light source is a pull switch, a knife switch, a button switch, a microwave control switch, a radio frequency control switch, a sound control switch or an infrared switch.

The power supply unit 12 outputs a constant current voltage.

It should be noted that the programmable controller 12 can be implemented as "gradually decreasing from the highest brightness to zero brightness", and also can be "gradually increasing from zero brightness to the highest brightness", and continuously cycle, with the increasing or decreasing range being the highest 1% of the brightness value, but the last adjusted working power P is stored.

For example, when the user presses the device 11 for starting the LED light source for the first time, the brightness of the LED light source is turned off for the last time is 15%, and the corresponding power value is P1. The LED light source enters the first working mode. At this time, the brightness of the LED light source is 15%. . If the brightness of the LED light source needs to be changed, the device 11 for starting the LED light source needs to be turned off and then turned on, and the LED light source 14 is turned off and then turned on. At the same time, it is necessary to ensure that the recognition time between turning off and turning on the light is a preset time 0— In N seconds, the LED light source 14 will enter the adjustable mode. At this time, the adjustment is performed at a precision of 1% and a rate of 5% / second. The user can adjust from the power P1 and the brightness of 15%; stay at 3 when the maximum value is reached Second, and then reverse the cycle, as long as the brightness of the LED light source can be changed through a certain regularity, and continuously cycle, if you find a suitable brightness, you can simply turn off the device 11 that starts the LED light source, and it can be automatically saved by the programmable controller 12 The second power P2, the brightness is 50%, any time after turning on the LED light source to automatically display the adjusted second power P2, the brightness is 50%, there is no need to repeat the setting again.

If the device 11 for turning on and turning off the LED light source is turned off and then on again, the recognition time between turning off and turning on the light is not within a preset time of 0-N seconds, the LED light source is turned on and the last working power P1 is turned on to light up the LED light source to work .

The switch input and single-chip computer-controlled dimming method of the present invention utilizes a combination of a programmable controller and a power supply unit to drive a light source within a range of 0-100% dimming accuracy so that a user can obtain a desired brightness of the light and automatically save it. The LED dimming method breaks through the technical bottleneck of the brightness adjustment range, greatly improving the practicability and convenience of the dimming method, and has outstanding substantial advantages.

The foregoing are merely preferred embodiments of the present invention, and are not intended to limit the scope of the present invention. Any equivalent changes or modifications made in accordance with the scope of the patent application for the present invention are covered by the present invention.

Claims

A switching input, single-chip computer-controlled dimming method, which is characterized by:

S101. Receive a user's request to start an LED light source, and light up the LED light source according to the last working power P1 of the LED light source as the initial working power value;

S102, if the user needs to adjust the brightness of the LED light source and start to switch the dimming mode, the LED light source enters an adjustable mode after being turned on. At this time, the brightness of the LED light source gradually changes from the last working power P1 value according to a preset manner;

S103. The user adjusts the LED light source to a working power P2 corresponding to the brightness, and starts confirmation. The LED light source stores the working power P2 as an initial working power of the next time the LED light source starts.
The dimming method according to claim 1, wherein step S102 further comprises step S104, and if the user does not meet the condition for switching the dimming mode, the LED light source operates at the initial power P1.
The dimming method according to claim 1, wherein the steps S101, S102 and 103 are performed cyclically, the initial power of the LED light source after one cycle is P1, and the initial power of the LED light source after two cycles is P2, By analogy, the initial power when the LED light source is turned on for the Nth time is the working power Pn-1 for the N-1th time.
The dimming method according to claim 1, wherein the user's request to start the LED light source in step S101 can be started by a switch.
The dimming method according to claim 1, wherein a switching condition of the dimming mode in step S102 is: a time interval between turning off and turning on is less than N seconds.
The dimming method according to claim 1, wherein the preset method in step S102 is "gradually decreasing brightness from P1 value to 1% brightness", or "gradually increasing from P1 value to highest brightness".
The dimming method according to claim 7, wherein the preset method changes with an accuracy of 1% and a rate of 5% / second, stays for a preset time when it reaches the maximum value, and then cyclically changes in turn.
A switch-input, single-chip computer-controlled dimming system, which is characterized by comprising: a device for starting an LED light source for receiving a switch sent by a user and turning it off within a preset time; a programmable controller that turns on after determining that it is turned off Whether to output the variable working power within a preset time and according to a preset change rule; or save the working power P1 after receiving the switch signal turned off by the user, and output it as P1 next time it is turned on; the power supply unit receives the programmable control The working power P1 sent by the transmitter; LED light source, the working power P1 output from the receiving power unit is on.
The dimming system according to claim 8, wherein the device for activating the LED light source is a pull switch, a knife switch, a button switch, a microwave control switch, a radio frequency control switch, a sound control switch, or an infrared switch.
The dimming system according to claim 8, wherein the power supply unit outputs a constant current DC power.