Embedded Files
Sponsored By Jan Kleissl Ph.D., Director, UCSD Center for Energy Research
Background
Background
Bike theft is rampant in urban areas. In 2020 alone, there were 1,130 bicycle thefts in the San Diego area. This level of theft provides a significant worry for people who want to use a more sustainable form of transportation.
Objective
Objective
The objective of this project is to design a device that will prevent bicycle theft. This device will notify the owner when their bicycle is being tampered with and will relay the location of the bicycle in the event that it is stolen.
Final Design
Final Design
Features:
Movement monitoring with accelerometer
Location tracking with GPS
Indefinite battery life with solar panels
Disguised as a saddle bag
Single lock for the hatch and device removal
Animotica_2_6_10_57_33.mp4Performance Results
Performance Results
Software
Software
Riding Mode: Checks for incoming messages every 10 sec.
Warning Mode: Updates Location, speed, acceleration count via SMS every 10 sec.
Theft Mode: Updates location and speed every 3-4 sec.
Monitoring mode: Constantly checks accelerometer readings to send device to Warning Mode if there is too much movement.
Housing
Housing
The tracking hardware has been disguised as a seat post mounted saddlebag to avoid suspicion from the thief.
Within the saddlebag there are two partitioned regions, one for personal effects storage and the other for a secret compartment concealing the electronic tracking hardware.
This secret compartment keeps the tracking hardware out of sight from the thief if the hatch becomes breached and keeps all the cables managed.
For ease of access, a linear rail has been integrated to remove the saddlebag without unscrewing the seat post collar.
The hatch has embedded solar panels that help trickle charge the battery and keep it running indefinitely.
A single locking mechanism to secures the linear rail system and the hatch.
Heat, dust, water , and impact resistant
Battery
Battery
The device achieves an indefinite battery life through the use of a switch and solar panels.
So long as the device spends as much time in direct sunlight as it does while on in monitoring mode, the battery is sustained
(Above) Current draw in mA for the device in its various modes.
(Below) Current production from solar panels in various weather conditions.
Watch Us Catch A Thief!
Watch Us Catch A Thief!
Video.mp4
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