Mission Protector is an automated life-saving hardware solution developed to tackle the tragic issue of children suffocating when accidentally trapped inside parked cars.
By continuously monitoring the vehicle's cabin air quality, this system automatically triggers mechanical windows to vent the vehicle when carbon dioxide reaches dangerous thresholds.
- Developer: Akash Kumar Gupta (Class X)
- School: VidyaGyan School, Sitapur, Uttar Pradesh
- Cost Efficiency: Built entirely for under Rs. 900, making it a highly scalable, mass-marketable safety feature.
Thousands of children worldwide lose their lives every year due to accidental entrapment inside cars. This frequently occurs during games like hide-and-seek or when left unattended by parents. In closed vehicles, oxygen levels rapidly plummet while carbon dioxide levels spike, leading to fatal suffocation.
An automated, responsive Arduino subsystem inside the vehicle cabin. As soon as the air composition degrades past a pre-configured "danger line," a physical trigger rolls down the window to introduce fresh oxygen into the vehicle immediately.
- Microcontroller: Arduino Uno
-
Gas Sensor: MQ135 Air Quality Sensor (Highly sensitive to
$CO_2$ ) - Actuator: High-torque Servo Motor
- Prototyping: Breadboard, Jumper Wires, and 10k Ohm Resistors
##Video
VID-20200828-WA0000.1.mp4
The connections are established according to the system logic mapping:
| Component | Component Pin | Arduino Uno Pin |
|---|---|---|
| MQ135 Sensor | VCC | 5V |
| MQ135 Sensor | GND | GND |
| MQ135 Sensor | AO (Analog Out) | A0 |
| Servo Motor | Signal (Pulse) | Pin 9 |
| Servo Motor | VCC (+) | 5V |
| Servo Motor | GND (-) | GND |
- Continuous Monitoring: The MQ135 sensor regularly samples gas concentration values inside the car cabin.
-
Emergency Trigger: If
$CO_2$ levels exceed safe parameters, the Arduino sends a signal command to the servo motor. - Automated Venting: The servo motor rotates, physically forcing the window mechanism open. Fresh oxygen rushes in to restore breathable air.
- Auto-Reset: Once cabin sensors register safe, nominal baseline levels again, the servo reverses direction to secure the window back to its closed position.