Summary of A LORAWAN THEFT RECOVERY SYSTEM FOR STOLEN BIKES USING A LOW-COST DRAGINO LGT-92
Simon Kemper published a guide using the low-cost Dragino LGT-92 LoRaWAN tracker to recover stolen bikes while running years on a single battery; it uses GPS plus a motion-triggered accelerometer to sleep until movement, supports external antennas and high-capacity batteries via a terminal, and can send immediate alarms on movement plus hourly check-ins over LoRaWAN.
Parts used in theDragino LGT-92 bike tracking project:
- Dragino LGT-92 LoRaWAN asset tracker (board)
- Battery pack (high-capacity cells such as D-Cell batteries)
- Screw terminal for battery connection (on LGT-92)
- External LoRaWAN antenna (optional)
- External GPS antenna (optional)
- Mounting hardware to attach the LGT-92 to the bike
- LoRaWAN network/platform for alarms and periodic reporting
Simon Kemper has published a guide for making use of the low-cost Dragino LGT-92 LoRaWAN asset tracking system to help track a bike when it’s stolen for easy recovery, while running for years on a single battery. Dragino LGT-92 is built for asset tracking across a LoRaWAN connection (a long-range low-power radio standard). The Dragino LGT-92 integrates a LoRaWAN radio with GPS-based location tracking. For the device to keep the power usage down, it utilizes an accelerometer to wake from sleep . This means that location fixes and updates are limited to when the device has detected movement.
Kemper states:
The LGT-92 is available in two versions. One of these versions offers the complete product, but without a case.” He continues “This variant can be used to build your own products based on the LGT-92. Further individualization are available: Connection of external antennas for LoRaWAN and GPS; terminal strip for connection of battery pack. Use the screw terminal to connect high-capacity batteries, for example D-Cells from Saft Batteries. These come with capacities of over 15.000mAh (15 Ah!) and are theoretically capable of operating the LGT-92 for several years.
With board and battery available, all that is needed is to connect it with the item to be tracked. Kemper further explains:
I have equipped my bike with an LGT-92. When I park the bike, the LGT-92 goes to sleep. If someone tries to grab my bike, the sensor wakes up and tells the platform to send an alarm immediately… Periodic reporting about once per hour indicates that the device is still within range of a LoRaWAN network and working properly. Again, you can react to these messages by setting a rule to indicate the absence of these hourly messages.
Read more: A LORAWAN THEFT RECOVERY SYSTEM FOR STOLEN BIKES USING A LOW-COST DRAGINO LGT-92
- What is the Dragino LGT-92 designed for?
It is built for asset tracking across a LoRaWAN connection, integrating a LoRaWAN radio with GPS location tracking. - How does the LGT-92 conserve battery life?
It uses an accelerometer to wake from sleep only when movement is detected, limiting location fixes to times of movement. - Can the LGT-92 run for years on a single battery?
Yes; by using high-capacity batteries such as D-Cells (around 15 Ah), it is theoretically capable of operating for several years. - Does the LGT-92 support external antennas?
Yes; versions allow connection of external antennas for LoRaWAN and GPS. - What happens when the bike is stationary and someone moves it?
The accelerometer wakes the device and it sends an immediate alarm to the platform when movement is detected. - How often does the LGT-92 send status updates?
It sends periodic reporting about once per hour to indicate it is within range and working properly. - Can I build my own product with the LGT-92 board?
Yes; one version provides the complete product without a case for building custom products based on the LGT-92. - How is the battery connected to the LGT-92?
Via a screw terminal on the board for connection of a battery pack or high-capacity batteries.
