I'm a final year student of electronic engineering and new to Arduino.
So actually instead of giving us topic, my supervisor lecturer wanted us to find a problem that can be solved using a LED based detection system. I decided my topic will be "LED Detection System for Baby Safety in Car" since a lot of infants/babies died in hot cars during summer nowadays and its heartbreaking to hear these kind of news.
Basically my system works like this:
It will detect whether the door car is locked/unlocked.
2.When the car is locked, the motion sensor will start operating and detect any movements in the car.
If there is movement detected, an sms/ a call will be send to the vehicles owner.
The question is, I don't know what kind of motion sensor is suitable for my project. I've read about PIR sensor but I'm afraid it might break since its operation range is only until 70 degree celsius whereas the temperature in a car during hot weather can reach until 117 degree celsius. I also read about students from Hopkins using xbox Kinect Sensor as their motion sensor but its kinda expensive.
Also is there any sensor that can detect when car door is locked/unlocked?
winnie:
Also is there any sensor that can detect when car door is locked/unlocked?
Yes and no. There are multiple ways of detecting this, but one that would fit all models, brands or years of all cars is a challenge.
First i would think of an inductive sensor. It checks if a metal object (Like a car door latch) is in a place where the sensor is placed.
As for the detection sensor: A baby, especially in a hot car, won't be doing a lot of moving. Usually there strapped down to prevent moving to much. And PIR detectors detect moving objects.
On the top of my head i'll say that even if a baby isn't moving, it'll be breathing. So a CO2 or O2 sensor would be my choice although not perfect.
PS: Atmel has a disclaimer saying that non of there products may be used in automotive products or whenever a life is at stake. So keep that in mind!
Depends on how lose you are using it in your definition. LED's are often used as a 2-part sensor solution. They can be used to emit light on one side (usually IR) and then picked up on the other side by an IR detector. Commonly used for break-beam sensors, encoders, etc. Also proximity detectors shoot IR light by LED's and measure how much IR is reflected back to a sensor to determine distance.
...But it's picking up something produced by a LED. That's exactly 1/2 of the equation to a working IR optocoupler. Optocouplers are often single piece units that contain both the LED and the detector in one unit. You and I both know how they work. But as a whole, that unit is still marketed and sold as a "sensor". Just saying.
winnie:
Also is there any sensor that can detect when car door is locked/unlocked?
Yes and no. There are multiple ways of detecting this, but one that would fit all models, brands or years of all cars is a challenge.
First i would think of an inductive sensor. It checks if a metal object (Like a car door latch) is in a place where the sensor is placed.
As for the detection sensor: A baby, especially in a hot car, won't be doing a lot of moving. Usually there strapped down to prevent moving to much. And PIR detectors detect moving objects.
On the top of my head i'll say that even if a baby isn't moving, it'll be breathing. So a CO2 or O2 sensor would be my choice although not perfect.
PS: Atmel has a disclaimer saying that non of there products may be used in automotive products or whenever a life is at stake. So keep that in mind!
-since Atmel disclaimer says that, I'll rethink my topic. Tq for the advice! I really appreciate it.
wanted us to find a problem that can be solved using a LED based detection system.
I'd want a heck of a lot more information as to what a "LED based detection system" was. As far as I know, and LED can't "detect" squat.
The major component in LED detection system is the LED detector itself. Other components don't matter as long as there is an LED detector in our project. Our Lecturer gives us freedom in choosing the title and I can only think of this title for now.
Xpendable:
Depends on how lose you are using it in your definition. LED's are often used as a 2-part sensor solution. They can be used to emit light on one side (usually IR) and then picked up on the other side by an IR detector. Commonly used for break-beam sensors, encoders, etc. Also proximity detectors shoot IR light by LED's and measure how much IR is reflected back to a sensor to determine distance.
I'm interested in any LED detector that can detect in < 1 m radius. Tq for responding
