CN218868408U - LED dimming driver directly controlled by common switch - Google Patents

Abstract

The utility model discloses a LED by ordinary switch direct control adjusts luminance driver for adjusting luminance of LED lamps and lanterns, a LED by ordinary switch direct control adjusts luminance driver and LED lamps and lanterns including the ordinary switch, the LED that connect gradually, ordinary switch adopts two accuse switches of forceful electric power type, normally closed relay or forceful electric power type normally closed from reset switch, LED adjusts luminance the driver and includes output types such as constant current, constant voltage, PWM. The utility model adopts the common switch to control the LED dimming driver to realize the functions of gradually lighting and dimming of the brightness of the lamp, switching the brightness of the ladder and the like, and the traditional lighting upgrading does not need to add wires; the utility model has the advantages that: the dimming controller is eliminated, so that the equipment, the pipeline, the construction and maintenance cost can be saved, the service life of the lamp is prolonged, and the product grade and the user experience degree are improved.

Description

LED dimming driver directly controlled by common switch

The technical field is as follows:

the utility model relates to the field of lighting, specifically relate to a LED by ordinary switch direct control driver of adjusting luminance.

The background art comprises the following steps:

with the wide application of LED lamps, in order to further improve user experience, generate gradual brightness or brightness change of different levels, derive various LED dimming drivers, and at present, there are mainly phase-cut drivers, 0/1-10V analog signal drivers, digital signals and other drivers, and it is necessary for the corresponding type of controllers to work cooperatively to complete the dimming task, where the front phase-cut controller has severe EMC electromagnetic interference, and the analog or digital signal controller needs to add extra weak current circuits.

Therefore, the existing LED dimming system has defects, or the equipment is troublesome, and the equipment, installation and maintenance costs are high.

The information disclosed in this background section is only for enhancement of understanding of the general background of the invention and should not be taken as an acknowledgement or any form of suggestion that this information forms the prior art that is already known to a person skilled in the art.

The utility model has the following contents:

an object of the utility model is to provide a by the LED driver of adjusting luminance of ordinary switch direct control to overcome the defect among the above-mentioned prior art.

In order to achieve the above object, the utility model provides a by ordinary switch direct control's LED driver of adjusting luminance, including the ordinary switch that connects gradually, LED adjust luminance driver and LED lamps and lanterns. The user realizes the change of the brightness of the LED lamp by operating the common switch, and the change of the brightness of the LED lamp comprises the change of gradually increasing and gradually decreasing, including the change of step brightness.

The common switch directly controls the LED dimming driver, and a traditional dimming controller (comprising a front phase-cutting controller or a rear phase-cutting controller, a 0/1-10V analog controller and a digital controller) is eliminated; and no additional communication line or other equipment and facilities need to be added, so that the system is suitable for new construction or traditional lighting upgrading, and is concise, reliable and practical.

The common switch comprises a strong-current double-control switch, a strong-current normally-closed self-resetting switch and a normally-closed relay; the common switch is in a conducting state at ordinary times, when a user presses the common switch, the common switch is switched off for a short time, the LED dimming driver is powered off for a short time, the LED dimming driver extracts the power-off pulse as an input signal, and namely the common switch directly generates a control signal.

The LED dimming driver is connected with an energy storage capacitor C, and the energy storage capacitor C supplies power for the LED dimming driver during short power failure; a DC/DC converter may be provided in the LED dimming driver, and the energy storage capacitor C may precede or follow the DC/DC converter.

A control method of an LED dimming driver directly controlled by a common switch is disclosed, wherein a plurality of dimming modes are built in the LED dimming driver, and a user sets the dimming modes by the following two methods:

(1) A BCD coding switch is installed on the LED dimming driver to directly set a dimming mode, and when the switch is turned to 1-n, the dimming mode is directly set to 1-n;

(2) The dimming mode is set indirectly by a normal switch.

The setting method for indirectly setting the dimming mode by the common switch comprises the following steps:

(1) Entering into setting: continuously pressing the common switch for K times, and enabling the LED lamp to generate response flicker to indicate that the LED dimming driver enters a set state;

(2) Formally setting: pressing a common switch S times, the LED lamp generates S confirmation short lights to indicate that the input of the user is accepted, wherein S represents a mode n;

(3) Exiting the setting: and the LED lamp automatically exits after the last time of pressing the common switch for x seconds, the LED lamp is on for a long time, the setting work is finished, and the LED dimming driver automatically stores the dimming mode.

The plurality of dimming modes built in the LED dimming driver comprise:

mode 1: continuously pressing an on-off key, and circulating the brightness in three states of weak state, strong state and closed state;

mode 2: continuously pressing an on-off key, and circulating the brightness in four states of 'minimum', 'medium', 'maximum' and 'off';

the following modes are represented by being turned on once, indicated by being turned on, and then turned off once again, indicated by being turned off, and specifically as follows:

mode 3: on = immediately on, off = immediately off;

mode 4: on = brighten from v1 to m1 at t1 time, off = dim from m1 to off at t2 time;

mode 5: on = brighten from v2 to m2 at t1 time, off = dim from m2 to off at t2 time;

mode 6: on = fade-on from v1 to m1 at t3 time, off = fade-off from m1 to off at t4 time;

mode 7: on = brighten from v2 to m2 at t3 time, off = dim from m2 to off at t4 time;

the v and m ranges from 0% to 100%;

the range of t 1-t 4 is 0-1000 seconds;

the above modes may exchange ordering.

Compared with the prior art, the utility model discloses an aspect has following beneficial effect:

the utility model cancels the light adjusting controller, namely, a front phase cutting controller or a back phase cutting controller, a 0/1-10V analog controller or a digital controller are not needed; the device and the pipeline can be saved, the construction and maintenance cost can be saved, the service life of the lamp can be prolonged, and the product grade and the user experience degree can be improved.

Description of the drawings:

fig. 1 is a schematic diagram of an LED dimming driver directly controlled by a common switch according to the present invention;

FIG. 2 is a schematic diagram of a strong current type dual-control switch according to the present invention;

fig. 3 is a schematic diagram of a normally closed relay according to the present invention;

FIG. 4 is a schematic diagram of a strong current type normally closed self-resetting switch according to the present invention;

fig. 5 is a schematic diagram of the power supply circuit of the MCU built in the LED dimming driver of the present invention;

fig. 6 is a schematic diagram of the present invention for indirectly setting the dimming mode through a common switch;

FIG. 7 is a schematic diagram of the overall circuit design of the present invention;

the specific implementation mode is as follows:

the technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts all belong to the protection scope of the present invention.

As shown in fig. 1 to 7, an LED dimming driver directly controlled by a common switch includes a common switch, an LED dimming driver and an LED lamp, which are sequentially connected.

The LED dimming driver comprises a rectification circuit, a power-off sampling circuit, a mode setting switch, a D/A converter, an LED brightness control and drive, an energy storage capacitor C and a microprocessor MCU, and the LED dimming driver selects output types such as constant current, constant voltage and PWM.

The rectifying circuit converts the 110/220V alternating current into direct current, the direct current is used for LED brightness control and driving circuits through the DC/DC conversion circuit, simultaneously, vcc power is generated to work of an MCU and the like, and the energy storage capacitor C can be connected in front of or behind the DC/DC conversion circuit.

In the specific embodiment of the utility model, the traditional light-adjusting controller, namely a front phase-cutting or back phase-cutting controller, a 0/1-10V analog controller and a digital controller are eliminated; the brightness change of the LED lamp is realized by a user through operating a common switch, a strong-current double-control switch, a strong-current normally-closed self-resetting switch or a normally-closed relay. The common switch is in a conducting state at ordinary times, and is temporarily disconnected when a user presses the common switch, the LED dimming driver is temporarily powered off, and the driver extracts the power-off pulse to serve as a control signal.

The energy storage capacitor C supplies power to the LED dimming driver when the LED dimming driver is powered off temporarily, so that the LED lamp does not flicker in the short power-off process of the LED dimming driver;

the LED dimming driver is internally provided with 7 dimming modes, and a user can set the dimming modes in two methods;

(1) A BCD coded switch is installed on the LED dimming driver to directly set the dimming mode, and when the switch is turned to 1-7, the dimming mode is directly set to 1-7.

(2) The dimming mode is set indirectly through the general switch.

In a specific embodiment of the present invention, the indirect dimming mode setting method is as follows:

(1) Entering into setting: continuously pressing the user switch for 6 times, and enabling the lamp to generate response flicker to indicate that the driver enters a setting state;

(2) Formally setting: if the user switch is pressed 4 times, the light generates 4 confirmation short lights, which indicate that the user input is accepted, and the user selects the mode 4.

(3) Exiting the setting: the system automatically exits the setting state after the user switch is pressed for 10 seconds for the last time, the lamp is on for a long time, the setting work is finished, the dimming mode 4 is automatically stored in the nonvolatile storage by the MCU, and the driver is kept in memory when power is lost, namely, the driver is used for a long time after being set again; the user pressing the switch will then be performed according to the mode 4 content.

In the embodiment of the present invention, the LED dimming driver has 7 built-in dimming modes:

mode 1: continuously pressing a switch key, and circulating the brightness in three states of weak, strong and closed;

mode 2: continuously pressing an on-off key, and circulating the brightness in four states of 'minimum', 'medium', 'maximum' and 'off';

the following modes are cycled according to the following steps, namely, according to the following steps, wherein the steps are represented by on, according to the following steps, the steps are represented by off, and the steps are repeated:

mode 3: on = turn on immediately, off = turn off immediately;

mode 4: on = fade from 15% to 100% in 3 seconds, off = fade from 100% to off in 5 seconds;

mode 5: on = brighten from 0% to 50% in 3 seconds, off = dim from 50% to off in 5 seconds;

mode 6: on = immediately on, off = fade from 100% to off in 20 seconds;

mode 7: on = fade-on from 5% to 80% in 20 seconds, off = turn-off immediately;

in the embodiment of the utility model, the MCU of the driver microprocessor can be powered off and reset due to the instant power off of the switch, which causes the malfunction; therefore, the power supply circuit is accessed at the MCU, and the specific method is as follows: the power Vcc supplies power to the MCU through the diode D and the capacitor C2, and due to the existence of the diode D, the capacitor C2 can not supply power to other circuits and only supplies power to the MCU to work, so that the discharge time is greatly prolonged, and the normal work of the MCU is ensured.

In the specific embodiment of the utility model, because the user operates in the form of a ping-pong switch, namely, the ping-pong switch is turned on once and then turned off once again, namely, the current state is the last reverse state, if the power fails or trips in the turned-off state, the ping-pong switch can be turned on after a call, which violates the conventional principle; in the other condition, when a plurality of drivers are partially opened, the drivers are powered off or tripped, and after the power is supplied, the partially opened drivers are partially closed and are disorderly; therefore, the lamps need to be turned off uniformly after power failure or tripping and power restoration; however, the power failure or trip and normal operation essentially all involve powering off the driver, and therefore the MCU is required to be able to determine when it is powered back on, two cases being as follows:

a. when power is off or tripping is performed, the LED dimming driver has longer power-off time, the capacitor C2 loses power, and the data in the RAM area of the microprocessor MCU disappear immediately;

b. when the switch is normally operated, although the LED dimming driver is powered off, the time is short, and the RAM area still maintains the power-on feature code due to the existence of the capacitor C2, and the implementation method is as follows according to 0x55ABCD as an example:

1) In a program, defining a power-on feature code of a plurality of bytes in an RAM area in an MCU, and then creating a first power-on mark to provide information for a power-off thread;

2) After the MCU is electrified, firstly reading an electrified feature code:

if the number of the cases is a, the reading result is a random number which is not exactly 0x55ABCD, so that the situation can be judged to be the first power-on, the conclusion is stored in a first power-on mark, and meanwhile, a power-on feature code is initialized; if the situation is b, the reading result is 0x55ABCD, so that it can be determined that the power is not powered on for the first time, and the conclusion is stored in the first power-on flag, and the process is as follows:

in the power-off thread, judging a first power-on mark, if the first power-on mark is True, turning off the lamp, setting the first power-on mark as False, and ensuring that a forced turn-off program is not executed any more next time; if the False is detected, executing a negation program, wherein the flow is as follows:

although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (4)

1. An LED dimming driver directly controlled by a common switch is characterized in that: the LED dimming device comprises a common switch, an LED dimming driver and an LED lamp which are sequentially connected, wherein the brightness of the LED lamp is changed through the operation of the common switch.

2. An LED dimming driver directly controlled by a common switch as claimed in claim 1, wherein: the common switch directly controls the LED dimming driver.

3. An LED dimming driver directly controlled by a normal switch as claimed in claim 1, wherein: the common switch adopts a strong-current double-control switch, a strong-current normally-closed self-resetting switch or a normally-closed relay.

4. An LED dimming driver directly controlled by a common switch as claimed in claim 1, wherein: and the LED dimming driver is connected with an energy storage capacitor C, and the energy storage capacitor C supplies power for the LED dimming driver during short-time power failure.

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