Wee Know Child Loss Prevention System

University of Pittsburgh - $15900.00

Child loss is a real fear for child caregivers in today’s society. In 2001, the police received 2,000 lost-child cases. Although the majority of these children were recovered within hours, time spent finding the child meant time spent keeping the family in distress. To deter this problem, this E-Team developed Wee Know, a child loss prevention system.

Wee Know consists of two wireless communication devices: one for the child and one for the caretaker. The child’s device, about the size of a wristwatch, attaches to the child’s wrist; the adult’s device resembles a pager. The devices consist of integrated circuits (ICs) that handle all functions of the system, utilizing radio frequency (RF) for communication. The team’s current prototype integrates a RF transmitter and receiver produced by Linx Technologies. To ensure the correct signal passes between the child and caretaker devices, the communication signal must be encoded. Encoding distinguishes the RF signal from other signals that could cause interference. If the child and adult devices get too far away to properly communicate, an alarm signals.

The Wee Know E-Team consists of four undergraduate students in computer, electrical and mechanical engineering. They work with two faculty members in electrical engineering, and a business advisor from the Wesley J. Howe School of Technology Management.