RU39774U1 - AUTOMATIC LIGHTING DEVICE SWITCH - Google Patents

Abstract

SUBSTANCE: automatic switchboard of lighting devices contains light and sound analyzers connected to a power supply circuit of a lighting device, and a triac connected in series with a lighting device and connected to a power supply control scheme of a lighting device. Effect: expanding the scope.

Description

The utility model relates to electrical engineering and can be used to automatically turn on / off the lighting in porches, corridors, garages and other rooms that do not require constant lighting.

A well-known automatic switchboard for lighting devices, in particular, the Lensvet lighting control automaton, containing a light analyzer connected to the power supply circuit of the lighting device (see MS Dadimov, Management of lighting networks. Ed. 2nd, revised library of an electrician. Issue 382. - M .: Energy, 1973).

The disadvantage of the described device is its narrow scope, due to the fact that the Lensvet control unit activates when the illumination in the evening decreases to a certain level and turns off the lighting in the morning when the selected illumination level is reached, eliminating the possibility of short-term illumination of dark rooms for the period of temporary stay in them.

The closest in technical essence and the achieved result (prototype) is an automatic switchboard, lighting devices, in particular, a lighting control device that responds to light and sound, containing light and sound analyzers connected to the power management circuit of the lighting device. At the same time, a thyristor connected to the power supply circuit of the lighting device is connected in series with the lighting device (see utility model certificate No. 25971, IPC ⁷ N 05 V 39/04, publ. 2002).

The device automatically turns on the DC power of the lighting device, for example, an incandescent lamp, in the presence of darkness and sound, and turns it off after a period of time determined by the internal parameters of the lighting control power supply circuit.

The objective of the proposed utility model is to expand the scope of the switch.

To achieve the named technical result, an automatic switchboard for lighting devices containing light and sound analyzers connected to the power supply circuit of the lighting device is equipped with a triac connected in series with the lighting device and connected to the power supply control scheme of the lighting device. The scope of the automatic switch by expanding the ability to turn on / off lighting devices powered by alternating current is achieved through the use of a triac connected in series with the lighting device and connected to the control circuit with the power control circuit of the lighting device.

The proposed utility model is illustrated by drawings, where figure 1 shows a structural diagram, and figure 2 is an electrical schematic diagram of an automatic switch of lighting devices. The automatic switchboard of lighting devices (Fig. 1) includes a light analyzer 1, a sound analyzer 2, connected to the power supply circuit 3 of the lighting device, and a triac 4 connected in series with the lighting device 5 and connected to the power management circuit 3 of the lighting device. As the lighting device 5, gas-discharge fluorescent lamps are used. At the same time (figure 2), the light analyzer 1 contains a photodiode 6, a resistor 7, a logic chip 8 and a diode 9. Sound analyzer 2

contains a microphone 10, resistors 11 and 12, a capacitor 13, a logic chip 14. The power control circuit 3 of the lighting device contains resistors 15, 16, 17 and 18, capacitors 19, 20 and 21, logic chips 22 and 23.

Automatic switch lighting works as follows. The power management circuit 3 of the lighting device supplies an electrical impulse to turn on the triac 4 when two events coincide: 1 - the presence of darkness, 2 - the presence of sound. In daylight, event 1 (the presence of darkness) is absent and the light does not light. In the dark, in the absence of event 2 (the presence of sound), the light also does not light. In the dark, when event 2 (the presence of sound) occurs, the triac 4 receives an electrical impulse to turn on from the power control circuit 3 and the lighting device 5 lights up. The duration of the burning of the lighting device 5 is determined by the internal parameters of the power control circuit 3 of the lighting device. After the time specified by these parameters has elapsed, the electric pulse from the power control circuit 3 disappears and the lighting device 5 goes out. The automatic lighting switch is reset. In the daytime, the light flux incident on the photodiode 6 keeps it in the open state, which ensures the presence of a logical zero at the input of the logic microcircuit 8 and, accordingly, a logical unit at its output. At the same time, the lighting device 5 does not light up and a change in the state of the logic microcircuit 14 does not lead to the triggering of a single-vibrator of the power control circuit 3 of the lighting device assembled on the logic microcircuits 22 and 23, the resistor 17 and the capacitor 21.

At night, the photodiode 6 is closed, which ensures the presence of a logical unit at the input of the logic microcircuit 8 and, accordingly, a logical zero at its output. Now sound vibrations (emitted when talking or walking near the automatic switch

lighting devices) are perceived by the microphone 10 and fed to the input of the logic microcircuit 14, amplified by it, pass through a chain of elements: a capacitor 19, a resistor 16 and a capacitor 20, after which they are fed to the input of a one-shot power supply circuit 3, which starts and generates a pulse at its output charging the capacitor 21 and opening the triac 4, the Lighting device 5 lights up. Light falls on photodiode 6 again (now from lighting device 5), it opens and a logic zero is held at the input of logic chip 8. After some time, determined by the resistance of the resistor 17 and the capacitance of the capacitor 21, the latter is discharged and the triac 4 closes. Lighting device 5 goes off. The automatic lighting switch returns to its original state.

Thus, the use of the proposed utility model expands the scope of application of the automatic switch, providing its work with lighting devices powered by alternating current.

Claims (1)

An automatic lighting fixture switch comprising illuminance and sound analyzers connected to a lighting fixture power control circuit, characterized in that it is equipped with a triac connected in series with the lighting fixture and connected to the lighting fixture power control circuit.