Patent ID: 9258872
Filing Date: 2016-02-09
CPC Classification: H05B,Y02B

Claim Text:
1. A streetlamp fault detection apparatus coupled to a streetlamp loop, the streetlamp fault detection apparatus comprising: a storage configured to store an impedance condition table defining a reference impedance range and a non-reference impedance range; a measurer configured to measure a total impedance value of the streetlamp loop in a measurement period; and a processor electrically connected to the storage and the measurer, and configured to wherein the streetlamp loop comprises a plurality of streetlamps, and each of the streetlamps comprises a light source, a ballast and a capacitor, the non-reference impedance range comprises a plurality of fault impedance ranges, the processor is further configured to determine a fault reason and a fault amount of the streetlamps according to the fault impedance ranges when the streetlamp loop is in the fault state, and the fault reason is selected from the group consisting of a light source short-circuit fault, a light source open-circuit fault, a capacitor open-circuit fault, a ballast fault and an overpower fault.