| 摘要 |
Devices (1) for detecting lamp drivers (2) comprise generators (11) for generating trigger signals defining code signals to be transmitted to the lamp drivers (2) that in response draw current pulses at random moments in time within first time-intervals from feeding cables (3), detectors (12) for detecting the current pulses flowing through the feeding cables (3) and for producing detection results, and counters (13) for counting numbers of detection results during the first time-intervals and for producing counting results indicative for first numbers of lamp drivers (2) that have responded to the code signals. The code signals may be transmitted to the lamp drivers (2) non-individually, via the feeding cables (3) or wirelessly. Lamp drivers (2) comprise receivers (21) for receiving the code signals and for producing reception results, and converters (22) for in response drawing the current pulses at the random moments in time within the first time-intervals from the feeding cables (3). |
