| 摘要 |
PURPOSE: An electronic module for enhancing an operation of a conventional parking meter is disclosed. CONSTITUTION: The electronic module (20) comprises a shell defining a hollow conformation and being attachable to a conventional parking meter, in substitution to an upper housing portion (16) of that conventional parking meter. The electronic module has a meter condition sensor (36) for detecting from a distant point one of the time expiry indicator and the violation condition indicator of that parking meter, when the indicator is in an indicating mode, and a vehicle sensor affixed to the shell for detecting from a distant point, a parked vehicle. The electronic module (20) further has; an electronic circuitry (40) mounted inside the shell and having a power source for operating the module; means (34) for receiving a first signal from the meter condition sensor and a second signal from the vehicle sensor; means for processing the first and second signals and means for transmitting a coded message to a remote receiver (34). Each side of the shell has a light operable into an ON mode by the electronic circuitry (40) simultaneously to a transmission of the coded message. |
