| 摘要 |
A device for monitoring whether a light bulb in a lamp post is working, and sending radio signals to a remote receiver to indicate the light bulb status. The device may detect the light output of the bulb, or may be plugged into the lamp post, between the bulb and socket, in order to detect the electric current passing through the bulb. The device may be powered by a solar cell and rechargeable battery, or by the power supply to the light bulb. Devices are installed into each of a large number of lamp posts, each device having its own unique ID code. After a fault is detected, a signal comprising the unique ID code is transmitted to the remote receiver, and thus the particular lamp post which has a faulty bulb can be detected remotely. |
