User's Manual

EA Mobile User Guide
1. Introduction
9
Automated meter
reading
The system uses radio frequency (RF) signals to allow utility personnel to read
meters from a distance while the reader is in motion. This technology is called
automated meter reading (AMR). This technology greatly increases the speed at
which routes can be covered with a high degree of accuracy.
Basic AMR components
An automated meter reading system requires the following basic components:
• Endpoint - the endpoint interfaces with meter index mechanics, translates
index reading into digital signals to capture data from meter, receives
commands from an interrogator and transmits meter data.
• Interrogator - at its simplest, the interrogator remotely reads meter data
transmitted by endpoints. At more sophisticated levels, an interrogator may
also program endpoints, store route data, selectively wake up endpoints,
verify endpoint conditions and data and set meter coordinates among other
functions.
• Antennas - both the endpoint and the interrogator use antennas to
broadcast and receive RF signals. The endpoint’s antenna is typically located
on the circuit board inside the endpoint case. Some interrogators use
external antennas (as shown in the illustration below), one for transmitting
and one for receiving. Many handheld interrogators use a single antenna
for both transmitting and receiving (antenna may be internal or external).
Figure 1-1.
System overview In addition to standard automated meter reading functions, the system portfolio
of products permits the remote recording of tamper conditions for gas and water
meters and linking of meter latitude and longitude data using a global
positioning satellite (GPS) system. With the optional EnergyAxis Vehicle Interactive
Display (EA_VID), the EA_Mobile makes driver-to-meter orientation more intuitive
and efficient.