WO2017196283A1

WO2017196283A1 - Led dimming system

Info

Publication number: WO2017196283A1
Application number: PCT/TR2017/050179
Authority: WO
Inventors: Huseyin Uygar BOZKUS
Original assignee: Eae Elektrik Aydinlatma Endustrisi Sanayi Ve Ticaret Anonim Sirketi
Priority date: 2016-05-12
Filing date: 2017-05-10
Publication date: 2017-11-16
Also published as: TR201606312A1

Abstract

A LED brightness adjustment / dimming system allowing adjustment of the brightness / lighting intensity of the LED (5) by adjusting the voltage transmitted to the LED (5) as a result of detecting the voltage information transmitted by the command signals. The time relay (2) forms a command signal for voltage adjustment by means of stopping and starting the transmission of current from the power source (1). The signal adjuster (3) detects said signal and adjusts the voltage to be transmitted to the LED driver (4). The LED driver (4) provides the required power to the LED (5) for forming the desired brightness.

Description

LED Dimming System The Related Art

The invention relates to a LED brightness adjustment / dimming system which allows adjustment of the brightness / lighting intensity of the LED by adjusting voltage transmitted to the LED as a result of detecting the voltage information transmitted by the command signals.

The Prior Art

In the prior art, the brightness of LEDs is adjusted by sending a signal through the power line. These systems operated by using PLC (Programmable Logic Controller) have high costs. Moreover, PLC systems can be affected by noise during signal transmission, resulting in incorrect detection at the LED drivers.

Another system used in the prior art is the RF (Radio Frequency) system. In RF systems, commands are sent by remote IP connection. Antenna installation is required in the system for remote connection. Qualified personnel are required to be able to adjust the system. On the other hand, use of various parts is required in the system in order to adjust the brightness of the LEDs. In the prior art applications;

• a signal generator and detector are needed,

• a control line is needed,

• the control line increases the cost of the system and makes the installation more difficult,

· the user may have to wait for hours in order to adjust the LED brightness and/or set the hours for changing brightness, • there is no function for detecting power outage, and therefore, the determined brightness settings change due to power outage.

As a result, the above said drawbacks and the inadequacy of the prior art solutions about the subject have necessitated an improvement in the related technical field.

Purpose of the Invention The invention is formed with the inspiration from the prior art situations and aims to solve the above said problems.

The main purpose of the invention is to allow performing the brightness and time adjustments of LEDs in a short and simple manner.

Other purposes of the invention are to:

• install a system that has lower cost than the prior art systems, without the need for a control line,

• provide ease of installation,

· provide adjustment and control facility via AC line, without the need for an additional interface and programming,

• easily adjust the LED brightness when desired, by using the time relay as a signal generator,

• allow making brightness and brightness change time adjustments within a few minutes,

• allow operation of the LED at 100% brightness during sunset and turning off during sunrise,

• detect power outage and allow the LEDs to stay in the level of brightness set by the user, after the power outage ends,

· provide a system that does not require technical qualification and can be used easily by any user. In order to achieve the above said purposes, the invention is a LED brightness adjustment / dimming system adjusting of the brightness / lighting intensity of the LED (5) by adjusting the voltage transmitted to the LED (5) as a result of detecting the voltage information transmitted by the command signals. Said system comprises the below given components:

• a power source (1 ) providing the energy required for operation of the system,

• at least one LED (5) providing light by means of the power adjusted and transmitted by the LED driver (4),

• a time relay (2) found at said power source (1 ) outlet and forming said command signals by means of strokes in order to allow the user to turn on and off and repeat the settings at desired hours by means of an astronomical clock circuit found therein,

· a signal adjuster (3) adjusting said voltage to be transmitted to the LED driver (4) in order to allow the LED (5) to be illuminated at the desired brightness, by means of detecting the command signals formed by the strokes of the time relay (2). The structural and characteristic features of the invention and all of its advantages shall be understood better with the figures and the detailed description given below in reference to the figures, and therefore, the assessment should be made by taking into account the said figures and detailed explanations.

Figures for Better Understanding of the Invention

Figure 1 is a preferred embodiment view of the LED brightness adjustment / dimming system according to the invention.

Drawings do not have to be scaled and details not necessary for understanding the present invention may be neglected. Moreover, components which are at least widely equal or which have at least widely equal functions are shown with the same number.

Description of Parts References

1 . Power source

2. Time relay

3. Signal adjuster

4. LED driver

5. LED

Detailed Description of the Invention

In this detailed description, the preferred embodiments of the invention are only disclosed for better understanding of the subject without forming any limiting effect. First of all, the positions of the components found in the preferred embodiment, and then the details and functions of these components will be given in order to allow the system to be understood better.

The positions of the components found in the preferred embodiment the system with regard to each other are as follows: the power source (1 ) is preferably mounted on a wall close to the area where the illumination is to be provided,

the time relay (2) is connected to the power source (1 ) and preferably positioned thereon,

the signal adjuster (3) is positioned in connection with the time relay (2), the LED driver (4) is positioned at the exit of the signal adjuster (3), • the LED (5) is positioned preferably by being hanged, mounted and/or connected to a high position at the area desired to be illuminated, in connection with the LED driver (4).

The functions and details of the components found in the preferred embodiment of the system are as follows:

• the function of the power source (1 ) is to provide the energy required for operation of the system,

• the power source (1 ) transfers electric current to the time relay (2),

• the user enters the LED (5) brightness setting and the time when the brightness setting should be applied, via keys preferably found on the time relay (2),

• the user can see the adjustments made on a screen preferably found on the time relay (2),

• time relay (2);

❖ is a component available in the market and comprising a microprocessor allowing transmission and storage of various commands therein,

❖ allows the brightness information entered by the user to be converted into commands via strokes, by means of the microprocessor that detects the brightness settings entered by the user using the keys found thereon,

❖ is an astronomical time relay with a real time clock that can automatically calculate the sunrise and sunset times,

❖ allows turning on and off at desired hours and repeating of the settings every day by means of the astronomical clock circuit found therein,

• the function of the time relay (2) is to form a pulse, in order to transmit the commands found in its memory, by stopping and starting the electric current transmitted from the power source (1 ), at the hours determined by the users, the time relay (2) stops (cuts) and starts the current for a certain period of time, preferably for 1 second, and thus turns the pulses into commands, preferably, when the brightness of the LED (5);

❖ is desired to be halved, or in other words reduced to 50% level, the time relay (2) forms 1 wave (Table 3),

❖ a wave is not determined for 0% and 100% brightness levels,

❖ other brightness levels of the time relay (2) (30%, 40%, 60%, 70%, 80%, and 90%) are determined by sending of 2 waves in different time intervals (Table 1 , Table 2, Table 4, and Table 5),

❖ when the time interval between the waves is more than expected, the system detects this as an error, and sets the brightness as 50%,

❖ following a power outage, the level stays at 100% level for 1 .5 hours, and then reset to the previous level that was used before the power outage,

the function of the signal adjuster (3) is to detect the commands (signals, strokes) transmitted by the time relay (2), by means of the microchip found thereon, and adjusts the voltage of preferably 1 -10 V to be sent to the LED driver (4), by means of the regulator found thereon,

the LED drivers (4) adjust the brightness (lighting intensity) of the LED (5) by means of the voltage transmitted thereto,

the cables ensure the data and energy transmission among the power source (1 ), time relay (2), signal adjuster (3), LED driver (4), and LED (5).

The command signal required for operation of the LED (5) with 30% brightness

Table 2: The command signal required for operation of the

LED (5) with 40% brightness

Table 3: The command signal required for operation of the

LED (5) with 50% brightness

Table 4: The command signal required for operation of the

LED (5) with 70% brightness

Table 5: The command signal required for operation of the

LED (5) with 90% brightness

Said signal adjuster (3) is an electronic circuit preferably comprising the circuit components shown in Table 6. Said command detection system operates by means of the software installed into the microchip found on the signal adjuster (3).

Table 6: Circuit components preferably found in the signal adjuster (3) circuit formed

Claims

1. A LED brightness adjustment / dimming system comprising:

• at least one LED (5) providing light by means of the power adjusted and transmitted by the LED driver (4), and allowing adjustment of the brightness / lighting intensity of the LED (5) by adjusting the voltage transmitted to the LED (5) as a result of detecting the voltage information transmitted by the command signals, and it is characterized in that; it comprises:

• a signal adjuster (3) adjusting said voltage to be transmitted to the LED driver (4) in order to allow the LED (5) to be illuminated at the desired brightness, by means of detecting the command signals formed by the strokes of the time relay (2).

2. A LED brightness adjustment / dimming system according to Claim 1 , and it is characterized in that; it comprises a signal adjuster (3) comprising:

• a microchip, in which software can be installed in order to detect said command signals,

• a regulator making said voltage adjustment.