| 摘要 |
The present invention "photoacoustic switch" relates to electric switches, reacting to the change of physical parameters of input values and can be used for providing facilities for short-time people staying therein (staircases, halls, corridors, apartment houses entries, etc) aimed at power safety used for premises lighting. The technical result of the proposed invention is directed to improving functional abilities of a photoacoustic switch, in particular: Adaptation to complex outside noise effects due to an automatic adjustment to the level of outside noises; increasing life time of illuminating lamps due to switching on/off synchronously to mains supply; providing long illumination (with off lamp position) in case of audio signal due to the use of second audio channel of switching-on control; providing control of lamp power limiting to use lamps exceeding rated value due to adding a control function of the switch output signal. The said inventive result is achieved by adding to the prior art switch comprising optical and acoustic sensors a rectifier and an electronic switch, a microprocessor adapted to analyse sound level and illuminance of ambient space and the switch output signal with corresponding connections. |
