CAREU U1 Lite(WR) Vehicle Tracker User
Guide
2
Chapter 1
consumed by the device. Backup battery and tamper sensing GPS Antennas primarily
indicate the loss of Main Power and the interruption of GPS antenna connectivity. The
device supports over-the-air firmware upgrade to deliver additional functionality without
physically touching the device once installed. The firmware of the CAREU U1 Lite(WR) can
be upgraded through USB without disassembling the device.
In consideration of technicality and marketability, the CAREU U1 Lite(WR) has so
many excellences to be competitive enough to stand out in the market. With regard
to the technicality, the CAREU U1 Lite(WR) saves and records more data even under
inactive communication status, and it also provides better power management,
coexistence of GPRS and SMS modes.
1.4 Hardware Architecture
As hardware is concerned, the CAREU U1 Lite(WR) is comprised of a micro-controller,
regulator, GPS receiver, GSM/GPRS modem, G-Force sensor, flash memory data
storage, I/O interface and LED status indicators.
Users can connect PC's HyperTerminal to the Diagnostic/setting port for the AVL
configuration.
G-Sensor for car accident prevention, car tow-away warning and power management.
The audio interface supports hand-free phone call.
GPIO that connects to any customer monitoring points by door switch, anti-thief or
actuators.
The A/D input that connects the analog signal sensor to the AVL, such as the fuel or
temperature sensor.
SPI
FLASH
I/O Ports
External
Device
G-Sensor
USB
CPU
GPS
Power
GSM
Modem
RS-232
Transceiver
Support
Accessory
1.5 Related Document
[1] CAREU U1 Lite(WR) Protocol Document
