| 摘要 |
<p>A system for remotely reading, storing and transmitting the current reading of a plurality of utility meters to a central computer. Each remote location using a utility is fitted with a transponder which is connected to the various utility meters. The transponders are capable of receiving pulses from sending units in the utility meters and storing these pulses. The computer can connect itself with a particular transponder by sending an interrogation code decodable only by that transponder. If the correct interrogation code is received twice within a predetermined time period the transponder is activated and transmits its stored information to the computer.</p> |
