Infrared Motion
May 29th, 2008
Infrared Sensor
Sensors are everywhere, some examples:
- Smaller shops or barbershops, often have a beam of light crossing the room near the door, which ends up in a photo-sensor on the other side of the room. When a customer breaks that beam, the bell rings.
- Bigger markets have automated doors, the black bulb above the door sends a burst of microwave radio energy, and waits for the reflected energy to bounce back. When a person walks into that field, the amount of energy is changed,…resulting in the door to open. Therefor you can’t just run in a market, the doors wont open fast enough
. So no kidz, it doesn’t have a little leprecon in it, which presses a button to open the doors!! - Same thing with ultrasonic sound waves used by bats for example, they bounce back off a target and create an image.
These are what we call active sensors. They send out energy, and detect changes in them .
Motion Sensor
The motion sensing system is a passive sensor. It detects infrared energy. Human beings have a skin temperature of approximately 36° Celsius or 93° Fahrenheit, this produces an infrared energy with a wavelength between 9 and 10 micrometers. When infrared energy is detected, that infrared light bumps electrons of the sensors substrate, these are amplified and result in a signal.
People who have these little sensors, may notice that the sensing light doesn’t go off when you’re standing still. That’s because the sensor is programmed to sense rapidly changes, you don’t want every change of infrared light setting off the alarm .
If you’re searching for a hack in this system, …than this is your lucky day, because you can. The sensors are sensitive in a range of 8 – 12 micrometers. So all you need to do is calculate what body temperature you got to have to produce waves of 7 micrometers or less. I’m not responsible if you got hypothermia afterwards . Or maybe you could build a glass bulb around you, glass doesn’t let the infrared waves through, think of a greenhouse, the light goes in , but then it’s trapped inside… so beware of people passing by in the possession of glass bulbs…
Footnote: During Operation: Desert Storm. The US military used infrared vision equipped tanks to spot and fight hostile tanks at night. Result: hostile tanks getting slaughtered like a sitting duck, technology = win
About the Author
I’m Jan Vansteenlandt, i’m 19 years old, i still attend school.
My articles will be around the technology topic, and all it’s subcategories. Normally IT-related.
I hope you enjoy them 
|
|
5 PCS Adjust Infrared IR PIR Motion Sensor Detector Module $0.01 |
|
|
New PIR 6 LED AAA Battery Light Lamp Adjustment Infrared Sensor Motion Detector $0.01 |
|
|
IR Infrared Save Energy Motion Sensor Automatic Light Lamp Switch 110V – 250VAC $0.01 |
|
|
Motion Activated 6-LED Adjustment Light Lamp Motion Detector Infrared PIR Sensor $0.01 |
|
|
Separate Intelligent PIR Infrared Motion Sensor Switch For All Light 220V 500W $0.01 |
|
|
Ademco 4275 passive infrared motion detector serial RPM $0.01 |
|
|
Infrared Body Motion Sensor Module For Arduino PIC C3 $0.01 |
|
|
Ademco 4275 passive infrared motion detector serial RPM $0.01 |
|
|
AC220V Wide Angle Three Wires Wall Infrared PIR Motion Sensor Switch Detectors $0.55 |
|
|
E27 3W 24-Leds Infrared Acoustic Occupancy Sensor Motion Detector Lamp Bulb NEW $0.99 |
|
|
Motion 6 LED Light Lamp Motion Detector Infrared PIR Sensor for Outdoor Home $0.99 |
|
|
DYP-ME003 Pyroelectric PIR Infrared Motion Sensor Detector Module DC4.5-20V $0.99 |
|
|
Infrared IR Motion Sensor Automatic Lighting Led Light Control Switch Panel $0.99 |
|
|
New Infrared Motion Sensor Automatic Light Switch For basemen/storage/garage $0.99 |
|
|
Small PIR Sensor Module; Pyroelectric Infrared Body/Motion Sensing $0.99 |
|
|
Infrared PIR Sensor 6-LED Light Lamp Motion Detector $0.99 |
|
|
PIR Infrared Auto Sensor Light Lamp Motion Detector LED For keyhole $0.99 |
|
|
Infrared IR Motion Sensor Automatic Led Light Lighting Switch 220v For Corridor $0.99 |
|
|
Motion 6 LED Light Lamp Motion Detector Infrared PIR Sensor for Outdoor Camping $0.99 |
|
|
New Infrared Motion Sensor Automatic Lighting Light Switch For corridor/bathroom $0.99 |
|
|
Motion 6 LED Light Lamp Motion Detector Infrared PIR Sensor for Outdoor Home $0.99 |
|
|
New Wireless Infrared PIR Home Security Motion Sensor Detector Alarm $0.99 |
|
|
Motion Activated 6-LED Adjustment Light Lamp Motion Detector Infrared PIR Sensor $0.99 |
|
|
2GIG Technologies 2GIG-PIR1-345 Passive Infrared Motion Detector New $0.99 |
|
|
Mini Infrared PIR Motion Human Sensor Detector Module $0.99 |
|
|
105dB 110 Degree Home Security Infrared Motion Sensor Alarm with Wireless remote $0.99 |
|
|
Wireless 6 LED IR Bulb Infrared Sensor Light Lamp Motion Detector Automatic $0.99 |
|
|
Wireless 6 LED IR Bulb Infrared Sensor Light Lamp Motion Detector Automatic $0.99 |
|
|
Infrared PIR Sensor LED Light Lamp Motion Detector $0.99 |
|
|
E27 IR Infrared Motion Sensor 23 LED Light Bulb Lamp 5m $1.00 |
|
|
E27 Infrared Motion Sensor 23 LED White Light Bulb Lamp $1.00 |
|
|
E27 PIR Infrared Motion Sensor 23 LED Light Bulb Lamp $1.00 |
|
|
E27 IR Infrared Motion Sensor 23 LED Light Bulb Lamp 5m $1.00 |
|
|
E27 Infrared Motion Sensor 23 LED White Light Bulb Lamp $1.00 |
|
|
E27 Infrared Motion Sensor 23 LED White Light Bulb Lamp $1.00 |
|
|
8 LED Light Lamp Infrared PIR Sensor Motion Detector $1.00 |
|
|
E27 Infrared Motion Sensor 23 LED White Light Bulb Lamp $1.00 |
|
|
E27 IR Infrared Motion Sensor 23 LED Light Bulb Lamp 5m $1.00 |
|
|
Infrared PIR Auto Sensor Motion Detector LED Light Lamp $1.00 |
|
|
8 LED Light Lamp Infrared PIR Sensor Motion Detector $1.00 |
|
|
Infrared PIR Auto Sensor Motion Detector LED Light Lamp $1.00 |
|
|
E27 PIR Infrared Motion Sensor 23 LED Light Bulb Lamp $1.00 |
|
|
E27 PIR Infrared Motion Sensor 23 LED Light Bulb Lamp $1.00 |
|
|
Infrared PIR Auto Sensor Motion Detector LED Light Lamp $1.00 |
|
|
E27 PIR Infrared Motion Sensor 23 LED Light Bulb Lamp $1.00 |
|
|
E27 PIR Infrared Motion Sensor 23 LED Light Bulb Lamp $1.00 |
|
|
E27 IR Infrared Motion Sensor 23 LED Light Bulb Lamp 5m $1.00 |
|
|
Infrared PIR Auto Sensor Motion Detector LED Light Lamp $1.00 |
|
|
8 LED Light Lamp Infrared PIR Sensor Motion Detector $1.00 |
|
|
Infrared PIR Auto Sensor Motion Detector LED Light Lamp $1.00 |
|
|
8 LED Light Lamp Infrared PIR Sensor Motion Detector $1.00 |
|
|
6 LED Light Lamp IR Infrared PIR Sensor Motion Detector $1.00 |
|
|
Infrared PIR Auto Sensor Motion Detector LED Light Lamp $1.00 |
|
|
Infrared PIR Auto Sensor Motion Detector 6 LED Light Lamp $1.00 |
|
|
8 LED Light Lamp Infrared PIR Sensor Motion Detector $1.00 |
|
|
New Adjust Pyroelectric Infrared PIR Motion Sensor Detector Module 4.5 – 20V $1.00 |
|
|
E27 Infrared Motion Sensor 23 LED White Light Bulb Lamp $1.00 |
|
|
E27 IR Infrared Motion Sensor 23 LED Light Bulb Lamp 5m $1.00 |
|
|
High Sensitivity Pyroelectric PIR Body Infrared Motion Sensor Security Module $1.00 |
|
|
E27 Infrared Motion Sensor 23 LED White Light Bulb Lamp $1.00 |
|
|
Infrared PIR Auto Sensor Motion Detector LED Light Lamp $1.00 |
|
|
Infrared PIR Auto Sensor Motion Detector LED Light Lamp $1.00 |
|
|
E27 Infrared Motion Sensor 23 LED White Light Bulb Lamp $1.00 |
|
|
8 LED Light Lamp Infrared PIR Sensor Motion Detector $1.00 |
|
|
6 LED Light Lamp IR Infrared PIR Sensor Motion Detector $1.00 |
|
|
Infrared PIR Auto Sensor Motion Detector 6 LED Light Lamp $1.00 |
|
|
8 LED Light Lamp Infrared PIR Sensor Motion Detector $1.00 |
|
|
Infrared PIR Auto Sensor Motion Detector LED Light Lamp $1.00 |
|
|
8 LED Light Lamp Infrared PIR Sensor Motion Detector $1.00 |
|
|
Infrared PIR Auto Sensor Motion Detector LED Light Lamp $1.00 |
|
|
E27 Infrared Motion Sensor 23 LED White Light Bulb Lamp $1.00 |
|
|
Infrared PIR Auto Sensor Motion Detector LED Light Lamp $1.00 |
|
|
8 LED Light Lamp Infrared PIR Sensor Motion Detector $1.00 |
|
|
Pyroelectric Infrared PIR Motion Sensor Detector Module 33x25mm $1.00 |
|
|
15 LED Infrared Sensor Motion Detector Security Night Light Lamp Hallway 3M 20s $1.00 |
|
|
Wireless PIR 15LED Infrared Auto Sensor Motion Detector Bright Light Lamp 3 Mode $1.00 |
|
|
E27 IR Infrared Motion Sensor 23 LED Light Bulb Lamp 5m $1.00 |
|
|
E27 IR Infrared Motion Sensor 23 LED Light Bulb Lamp 5m $1.00 |
|
|
E27 PIR Infrared Motion Sensor 23 LED Light Bulb Lamp $1.00 |
|
|
E27 PIR Infrared Motion Sensor 23 LED Light Bulb Lamp $1.00 |
|
|
E27 Infrared Motion Sensor 23 LED White Light Bulb Lamp $1.00 |
|
|
15 LED Light Lamp IR Infrared PIR Sensor Motion Detector $1.00 |
|
|
Wireless Infrared PIR Auto Sensor Motion Detector 15 LED Light Lamp $1.00 |
|
|
Wireless Infrared PIR Auto Sensor Motion Detector 15 LED Light Lamp $1.00 |
|
|
15 LED Light Lamp IR Infrared PIR Sensor Motion Detector $1.00 |
|
|
15 LED Light Lamp IR Infrared PIR Sensor Motion Detector $1.00 |
|
|
E27 IR Infrared Motion Sensor 23 LED Light Bulb Lamp 5m $1.00 |
|
|
Infrared PIR Auto Sensor Motion Detector 6 LED Light Lamp $1.00 |
|
|
8 LED Light Lamp Infrared PIR Sensor Motion Detector $1.00 |
|
|
Infrared PIR Auto Sensor Motion Detector LED Light Lamp $1.00 |
|
|
6 LED Light Lamp IR Infrared PIR Sensor Motion Detector $1.00 |
|
|
E27 Infrared Motion Sensor 23 LED White Light Bulb Lamp $1.00 |
|
|
8 LED Light Lamp Infrared PIR Sensor Motion Detector $1.00 |
|
|
E27 IR Infrared Motion Sensor 23 LED Light Bulb Lamp 5m $1.00 |
|
|
E27 PIR Infrared Motion Sensor 23 LED Light Bulb Lamp $1.00 |
|
|
E27 Infrared Motion Sensor 23 LED White Light Bulb Lamp $1.00 |
|
|
Wireless Infrared PIR Auto Sensor Motion Detector 15 LED Light Lamp $1.00 |
|
|
Infrared PIR Auto Sensor Motion Detector LED Light Lamp $1.00 |
|
|
8 LED Light Lamp Infrared PIR Sensor Motion Detector $1.00 |
|
|
E27 IR Infrared Motion Sensor 23 LED Light Bulb Lamp 5m $1.00 |
