WO2018009099A1

WO2018009099A1 - Led-based lighting device

Info

Publication number: WO2018009099A1
Application number: PCT/RU2017/000468
Authority: WO
Inventors: Юрий Борисович СОКОЛОВ; Михаил Викторович СТРЕЛЬНИКОВ
Original assignee: Individual
Current assignee: Individual
Priority date: 2016-07-08
Filing date: 2017-06-30
Publication date: 2018-01-11
Anticipated expiration: 2019-01-08

Abstract

The invention relates to the field of lighting technology. The technical result is increased reliability and service life. The present device consists of two parts, the first part comprising: a rectifier, a ripple compensating device, a voltage sensor, a comparator, a current switch controller, a current switch, a passive current source, and a PLC control device. The second part comprises: a first group of LEDs, switchable groups of LEDs, a measuring resistor, a current sensor, and an LED quantity control switch. In the first part, the rectifier is connected in series to the ripple compensating device and the passive low-level current source, the voltage sensor controls the passive current source by means of a first switch, and a PLC signal has priority control of the current source and receives a control signal from a control centre via mains wires. Unregulated voltage is supplied to the lighting device via a two-wire line with fixed currents, depending on the PLC signal and the first switch. In the second part, the measuring resistor is connected to the current sensor-comparator, which controls a second switch, which switches the quantity of LEDs connected into the circuit according to the level of current in the twin-wire line, synchronously with the first switch. Connected into the circuit of the twin-wire line, in series with the measuring resistor, are a primary group of LEDs and several groups of LEDs which are connected into said circuit depending on the current in the twin-wire line, which depends on the level of the incoming supply voltage.

Description

ОСВЕТИТЕЛЬНОЕ УСТРОЙСТВО НА СВЕТОДИОДАХ LED LIGHTING DEVICE

Изобретение относится к светотехнике и может быть использовано в производстве и эксплуатации светодиодных осветительных устройств, работающих в условиях нестабильной электрической сети питания. The invention relates to lighting engineering and can be used in the manufacture and operation of LED lighting devices operating in an unstable electric power network.

Сетевое напряжение от которого питаются светодиоды не имеет стабильного значения и, в общем случае, может меняться в пределах +10% - 15% от номинального значения и более. Поэтому, если менять количество включенных в сеть светодиодов синхронно с изменением сетевого напряжения и одновременно менять ток в цепи светодиодов на ту же величину в процентах в обратную сторону, то световой поток данного источника света будет неизменным. Поскольку напряжение на переключаемых диодах можно менять только дискретно (минимально на величину напряжения на одном светодиоде) то и величина тока будет меняться дискретно в таком же процентном соотношении. Если при этом последовательно со светодиодами включить источник тока, то в пределах напряжения между выводами светодиода можно стабилизировать ток, а мощность источника тока должна быть больше, чем мощность, рассеиваемая светодиодом. The mains voltage from which the LEDs are powered does not have a stable value and, in general, can vary between + 10% - 15% of the nominal value or more. Therefore, if you change the number of LEDs included in the network synchronously with the change in the mains voltage and simultaneously change the current in the LED circuit by the same percentage in the opposite direction, then the luminous flux of this light source will be unchanged. Since the voltage at switchable diodes can only be changed discretely (minimum by the magnitude of the voltage on one LED), then the magnitude of the current will change discretely in the same percentage. If a current source is connected in series with the LEDs, then within the voltage between the terminals of the LED, the current can be stabilized, and the power of the current source must be greater than the power dissipated by the LED.

Рассмотрим вариант исполнения схемы для уличного (дорожного освещения) показанные на фиг. 1, 2. Consider an embodiment of the circuit for street (road lighting) shown in FIG. 12.

В основании столба (фиг. 1) в изолированном пластиковом корпусе расположены: At the base of the column (Fig. 1) in an insulated plastic case are located:

- выпрямитель (например, 3-х фазного напряжения) 1 - устройство компенсации пульсации 2 - rectifier (e.g. 3-phase voltage) 1 - ripple compensation device 2

- возможно установка конденсатора С для минимизации пульсаций 3 - installation of capacitor C is possible to minimize ripple 3

- датчик напряжения, компаратор и др. устройства 4, вырабатывающие сигнал, управляющий переключателем 5, который, в свою очередь управляет пассивным стабилизатором тока 6 - voltage sensor, comparator and other devices 4 that generate a signal that controls the switch 5, which, in turn, controls the passive current stabilizer 6

- PLC модем 7 также управляющий источником тока 6 и имеет связь с электрической сетью. - The PLC modem 7 also controls the current source 6 and is connected to the mains.

Таким образом, наверх на столб поступает напряжение соответствующее текущему значению сетевого напряжения с током соответствующим этому напряжению. Величина тока источника тока 6 соответствует положению переключателя ГЪа, положение которого в свою очередь зависит от уровня входного напряжения, которое управляет переключателем П1а через датчик напряжения 4. Когда ток в общей цепи изменился, то на резисторе (рис.2) изменяется напряжение и датчик тока 4 переключает количество диодов с помощью переключателя Шб соответственно положению переключателя П1а (в основании столба). Таким образом, на плате светодиодов (в осветителе) имеется минимальное число компонентов, которые не боятся высокой температуры печатной платы со светодиодами. Надежность такого осветителя фактически определяется надежностью светодиодов. При соблюдении определенных правил, на такой осветитель можно давать гарантию более 10 лет, а реальная наработка светодиодов может быть более 100000 часов. Для защиты светодиодов от различных помех возможно в 2-х проводную линию соединяющую основание столба с осветителем включить варистор, а в общую токовую цепь включить пассивный источник тока с значением тока больше, чем максимально возможный ток светодиодов в рабочем режиме. В основании столба также располагается вся основная схема управления, включая модем PLC, который управляет освещением в соответствии с сигналами из Центра или в том же основании будет располагаться программный блок. Thus, the voltage corresponding to the current value of the mains voltage with a current corresponding to this voltage arrives at the top of the pole. The magnitude of the current of the current source 6 corresponds to the position of the switch Гаа, the position of which in turn depends on the input voltage level, which controls the switch П1а through the voltage sensor 4. When the current in the common circuit has changed, the voltage and current sensor change on the resistor (Fig. 2) 4 switches the number of diodes with the switch Шб according to the position of the switch П1а (in the base of the column). Thus, on the LED board (in the illuminator) there is a minimum number of components that are not afraid of the high temperature of the printed circuit board with LEDs. The reliability of such a illuminator is actually determined by the reliability of the LEDs. Subject to certain rules, such a illuminator can be warranted for more than 10 years, and the actual operating time of LEDs can be more than 100,000 hours. To protect the LEDs from various interference, it is possible to include a varistor in a 2-wire line connecting the column base to the illuminator, and to include a passive current source with a current value greater than the maximum possible LED current in the operating mode in the common current circuit. At the base of the column is also the entire basic control circuit, including a PLC modem, which controls the lighting in in accordance with the signals from the Center or on the same basis, the program unit will be located.

Управляющие сигналы PLC могут иметь следующие позиции: PLC control signals can have the following positions:

- сигнал выключено - signal is off

- сигнал включено (в этом случае работают П1а,б) - the signal is on (in this case, P1a, b)

- сигнал димминг (в этом случае П1а,б в заданном положении) - signal dimming (in this case, P1a, b in a given position)

з s

Claims

FORMULA

1. A two-part LED lighting device, the first part: a rectifier, ripple compensation device, capacitor (optional), voltage sensor, comparator, current switch control, current switch, passive current source, PLC control device, second part: first a group of light-emitting diodes, switchable groups of LEDs, a measuring resistor, a current sensor, a switch for controlling the number of LEDs, characterized in that in the first part, the rectifier is connected in series with the device with a passive low-power current source, the voltage sensor controls the passive current source using the first switch, a PLC signal has priority control of the current source and receives a control signal from the control center, an unstabilized voltage is applied to the illuminator via a two-wire line with fixed currents depending on PLC signal and the first switch, in the second part there is a measuring resistor connected to a current sensor - a comparator, which controls the second switch a switch, which switches the number of LEDs included in the circuit in accordance with the current level in the two-wire line and synchronously with the first switch, and in the circuit of the two-wire line in series with the measuring resistor, the main group of LEDs is connected in series with which several groups of LEDs are included, depending on from a current in a two-wire line, which, in turn, depends on the level of the input mains voltage, the PLC device is connected to the Control Center via network wires.

2. The lighting device according to claim 1, in which the power of the current source and the accuracy of monitoring the input voltage depends on the specified range of fluctuation of the input voltage, the number of stages of switching groups of LEDs and the voltage on the group of LEDs.

3. The lighting device according to claim 1, in which the main control circuit is concentrated at the point of supplying the mains voltage, and in the illuminator only LEDs, a current sensor, and a LED control switch.

4. The lighting device according to claim 1, in which both switches are electronic.

5. The lighting device according to claim 1, in which a controlled passive current source is used, controlled by an electronic switch and a PLC signal.

6. The lighting device according to claim 1, in which the PLC signal has priority, and the switch controls the current source with a PLC signal corresponding to 100% of the LEDs, in the position of the PLC signal, the dimming source current is set to the specified value, and in the “off” position, the current current source is stopped.

7. The lighting device according to claim 1, in which the two parts of the device are connected via a two-wire line, along which there is an unstabilized voltage with a stable switched current of the LEDs and a signal for switching the number of LEDs, which uses the current level of the LEDs.

8. The lighting device according to claim 1, in which the power of the current source can be 10 ... 30 or more times less than the total power of the lighting device, provided that the ripple level is at least 5 times less than the voltage in the group of switched LEDs.

9. The lighting device according to claim 1, in which, depending on the type of LEDs, the operating current and the crystal temperature of the LEDs, the durability can be more than 100,000 hours.