Infant Sensing Integrated System

Overview

Objectives/Goals The goal of my project was to design and install a pressure sensor in an existing infant car seat and integrate this system with a vehicle, which will reduce the occurrence of an infant being left alone in a locked car. Methods/Materials I made the following assumptions: 1. The car is equipped with Bluetooth (standard feature in most cars). 2. A smartphone app will be developed to alert the caregiver to the child left behind if the paired phone is greater than 50 yards from the Infant Sensing Integrated System (I.S.I.S) / Dont Leave Me system. 3. The Bluetooth on the phone will be forced on if the system is activated by the depression of the pressure switch. 4. The cars Bluetooth will enable the cars horn to be sounded in the event of an alert. I acquired the following components: a. Iteaduino Bluetooth microcontroller to be used as my motherboard; b. Electronic push button to simulate my car seat pressure switch; c. Electronic magnetic switch to simulate a car door switch; d. Electronic relay assembly; e. Siren to simulate a cars horn; f. Associated connecting cables. 2. The push button, magnetic switch and relay assembly are plugged into the digital input/output terminals (D8-10) on the microcontroller. 3. The relay is programmed to close the normally opened (NO) contacts and sound the siren if the push button (pressure switch) remains active and the magnetic switch (door switch) is opened. 4. The microcontroller is programed using a PC and the Arduino Integrated Development Environment application to read a high and low value for the devices. The program code was standard from the manufacturer and only required consolidation for multiple components. Testing was broken up into three major phases: 1: Component Testing; 2: Integrated Testing; 3: Final Testing. Results The system worked as designed, alerting the caregiver to the presence of the infant in the seat, except when the sensor was placed in the small of the back. Conclusions/Discussion My conclusion is this system will reduce the number of infants left alone in vehicles.

Competition history

• CSEF 2014 Electronics & Electromagnetics · Entry J0902

Resources

• CSEF project summary ↗

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