DE4229367C1 - IR-controlled sensor dimmer for lighting device - has timing element in IR receiver extending received IR pulses from standard remote-control transmitter - Google Patents

Abstract

The sensor dimmer has a receiver for switching and dimming commands provided by IR pulses from a hand-held transmitter. A timing element within the receiver extends the duration of the IR pulses from less than 120 ms to 180 ms for bridging the pause interval between 2 successive pulse bursts, to provide a continuous signal for the dimming circuit. The remote-control transmitter used to provide the switching and dimming commands may be a standard transmitter used for a television, video or hi-fi appts. ADVANTAGE - Sensor does not require own voltage source. Allows single remote-control transmitter to be used for different functions.

Description

The invention relates to an infrared-controlled lighting device a switching and dimming remote-controlled by a hand transmitter Receiver unit, as z. B. is known from DE 40 09 363 A1. This known device requires one specifically for the infrared receiver the infrared hand-held transmitter matched to the switching and dimming receiver unit, which emits coded infrared pulses when actuated, the code of which associated receiver is evaluated and used for control. Such infrared controlled lighting devices are becoming increasingly popular used to conveniently dim apartment lighting using a handheld transmitter or switch on or off without the wall switch being visited and must be operated.

In the known lighting devices, there is therefore a separate one Remote control necessary, which then next to the u. U. scho existing TV, video and hi-fi system infrared remote control "lies around".

The invention is therefore based on the object of an infrared-controlled Lighting device with associated switching and dimming receiver unit to specify, in which the control with almost any commercially available video, TV or HiFi system infrared remote control is possible.

This object is achieved by a device with the in claim 1 specified features solved.

From DE 38 37 338 A1 it is known to provide a lighting device Remote control buttons on a television (via a separate channel) head for.

In the magazine "Licht", 35th vol. 4/83, pp. 256-257 is already being considered pulled a single remote control for different consumers too use.

A circuit is known from the magazine "Elektor", July / August 1981, p. 10, which extends pulses by means of a retriggerable timer.

An exemplary embodiment with the associated circuit is explained below:

Contrary to the IR remote control principles on the market, where the pulse code sent by the IR handheld transmitter in the IR receiver is decoded and only a certain code to control the Dimmer circuit, the arrival of any IR Pulse codes in the IR receiver to control the dimmer circuit, characterized by the following principle:

The IR pulse bursts emitted by most IR remote control transmitters have a burst duration of <120 ms in almost all coding methods used and a repetition period of <170 ms. In the described below Each received IR pulse is switched by a retriggerable timer extended to 180 ms, which is the pulse duration between two pulse bursts bridged.

The consequence is the following:

If you now press any function button on the IR handheld transmitter that does that Initiate transmission of the pulse bursts, so arises at the output of gate B. Impulse, the duration of which depends on the one hand on the actuation duration of the Function key is, but then it is always at least 180 ms long. With this Schmitt trigger output signal is via the one working as an inverter Gate A controlled the sensor dimmer circuit.

According to the specifications issued by the dimmer IC manufacturer with input control signal durations between 50 ms and 400 ms the at the Dimmer switch connected lamp on or off, depending on previous switching state. The switching process is at the end of Input control signal triggered.

If the input control signals last longer than 400 ms, the Current flow angle continuously changed until no more input signal is present. The control range of the current flow angle from 45 ° to 150 ° is in the Run through the dimming phase of 3.8 seconds.

This means the following for the application: Short presses of function keys of an IR handheld transmitter lead to Switching operations, longer for dimming.

In order to have a parallel function with the original IR To avoid receivers, the receivers of the sensor dimmer and the Original IR receiver a sufficient distance or another Have reception angle. Another way to do a double function Avoid using a function key that is currently in use Operating state of the original IR receiver would have no effect, e.g. B. the training Use the button on the IR handheld transmitter when the Original receiving device, or in the switched on state of the Use the program key on the IR handheld transmitter, whose program is already switched on.

An additional control of the dimmer circuit via extensions enables the gate D. The extension circuit to be used then is is identical to the circuit proposed by the dimmer IC manufacturer and is therefore not listed here.

Due to the selected circuit technology and the low power consumption of the Overall circuit is no separate voltage source necessary (claim 3).  

Circuit description dimmer

R1, C2, C5, D4, D5: power supply for the entire circuit
R2, C3: Synchronization of the internal time base (PLL circuit) with the mains frequency
R3, C4: Integration element for the internal PLL circuit
R4: Sensitivity adjustment of the sensor surface
R5, R6: protection of the user
D2: Reduction of positive voltages, which arise in some triac types in the ignited state at the gate connection, to values below +0.3 V
C1, Dr: radio interference suppression in accordance with VDE 0875/1

Dimmer control

Gate A: Inverter for correct control of the dimmer circuit
Gates B & C, D3, R8, C7: timer 180 ms
Gates B, R7, C6: timer to prevent the connected consumer from being switched on automatically when the voltage returns after longer power failures
Gates D, R9, R10: extension input, the resistors ensuring sufficient current limitation if the extension circuit is reversed
IR-E: automatically controlled infrared receiver circuit module with digital output signal

Component description

R1: 1 kλ / 1Ω
R2: 1.5 MΩ
R3: 100 kΩ
R4: 1.5 MΩ
R5: 4.7 MΩ
R6: 4.7 MΩ
R7: 1.5 MΩ
R8: 270 kΩ
R9: 120 kΩ
R10: 470 kΩ
C1: 0.1 uF / 250 V
C2: 0.15 uF / 250 V
C3: 10 nF / 250 V-
C4: 100 nF / 250 V-
C5: 330 uF / 5.6 V-
C6: 1 uF / 5.6 V-
C7: 1 uF / 5.6 V-
Dr: throttle 1.4. . . 2 mH, Q = 11. . . 24th
IC1: SLB 586 Siemens dimmer IC
Gate A, B, C, D: CMOS-IC 4093 quadruple NAND with Schmitt trigger property
IR-E: infrared receiving circuit module e.g. B. from Sony

Claims (3)

1. Infrared-controlled lighting device with a remote control by a hand-held switching and dimming receiver unit, characterized in that the switching and dimming receiver unit comprises a timer for extending each received infrared pulse to a predetermined value, so that remote control of the switching and dimming -Receiver unit is possible through almost every commercially available infrared transmitter. 2. Infrared-controlled lighting device according to claim 1, characterized, that the switching and dimming receiver unit is designed in two-wire technology. 3. Infrared-controlled lighting device according to claim 2, characterized, that the supply voltage of the switching and dimming receiver unit through a limitation of the maximum current flow angle is generated.