Dragino LGT-92 Series, Руководство пользователя

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LGT-92 LoRa GPS Tracker User Manual
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1. Introduction
1.1 What is LGT-92 LoRa GPS Tracker
LGT-92 is a Long Range / low power consumption LoRaWAN GPS tracker. LGT-92 gets user’s
location info via GPS and sends it to IoT server via LoRaWAN wireless network.
Compare to traditional GPS trackers (base on GPRS or Cellular network), LGT-92 use much lower
power consumption hence can last for longer time. It doesn’t need cellular service; system
integrator can build their tracking network base on LoRaWAN technology or Join the device to
existing LoRaWAN network
LGT-92 uses STM32l0x chip from ST, STML0x is the ultra-low-power STM32L072xx
microcontrollers incorporate the connectivity power of the universal serial bus (USB 2.0
crystal-less) with the high-performance ARM® Cortex®-M0+ 32-bit RISC core operating at a 32
MHz frequency, a memory protection unit (MPU), high-speed embedded memories (192 Kbytes
of Flash program memory, 6 Kbytes of data EEPROM and 20 Kbytes of RAM).
LGT-92 includes a low power GPS module L70 and a 9-axis accelerometer for motion and attitude
detection. The power for both of the GPS module and accelerometer can be controlled by MCU
to achieve the best energy profile for different applications.
LGT-92 series products include two major variants :

LGT-92-LI : is powered by 1000mA rechargeable Li-on battery and charge circuit, which target
for real time tracking with short tracking uplink.

LGT-92-AA : Disable the charge circuit to get the lowest power consumption and power
directly by 2 x 1.5v AA battery. This is designed for asset tracking where only need to uplink
a few times every day.
LGT-92 is an open source product , it is based on the STM32Cube HAL drivers and lots of libraries
can be found in ST site for rapid development.