SENSING

Sensing in Smart Homes

Sensors play an important role in smart home systems. A Smart Home can provide people with a comfortable, safe, power-saving and convenient life by enabling intercommunication amongst all household appliances. This includes lights, HVAC (Heating, Ventilation and Air Conditioning), TVs, computers, entertainment system, and security system. They can be controlled by a smart home control panel installed in house or through GSM/CDMA, Internet, and PSTN networks. Smart home systems are also called home automation, electronic home/e-home, or intelligent home.

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The following sensors can be used for different purposes in contribution to making a smart house. Temperature, humidity, light, and air pressure sensors constitute an intelligent environment monitoring network. This network works with HVAC, electric windows, and lighting system to control indoors temperature, humidity, and lighting intensity so as to make a comfortable environment.

To build a security system, various devices such as cameras, reed sensors, smoke detectors, PIR (Passive Infrared) sensors, and IR sensors are required. You can also include sounders in security systems. Alarm sounder is a low current consumption device suitable for close proximity signaling in fire and security applications. Cameras are made based on image sensors which are the core devices implement real-time video capture. Reed sensors can be installed on doors and windows to detect intrusion. Smoke sensors are used to detect if there is fire accident. PIR sensors are a kind of motion sensor, responsible for detecting intruder’s motion in a specified area. When any of these devices detects something unexpected, an alarm is triggered and is reported to the property owner and management staff.

PIR sensors are used as human body detectors for the purpose to turn on and turn off lights based on presence and absence of people. Light sensors detect intensity of natural light based on which lights in home will be turned off in daytime and turned on at night. The combination of PIR and light sensors can provide an intelligent lighting control.

As sensing and wireless communication technologies evolve continuously, MEMS sensors of smaller size and wireless sensor network have already been introduced into smart home systems.

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Hover over the blocks to view recommended products for this solution:

Ambient light sensor
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Ambient light sensor
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Temperature sensor
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Passive infrared sensor
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Includes colour camera, black-and-white camera and image sensor
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Includes photoelectric and Ionization sensor
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Air Pressure Sensor
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MT9P031I12STCD ES Image Sensor Dev Kit
MT9P031I12STCD ES Image Sensor Dev Kit
Aptina Imaging
The Micron® Imaging demonstration system family supports the full line of Micron's CMOS image sensor products.
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MCP9800DM-PCTL Thermal Sensor Kit
MCP9800DM-PCTL Thermal Sensor Kit
Microchip
The MCP9800 Thermal Sensor PICtail™ Demo Board demonstrates how to interface the MCP9800 to a PICmicro(R) microcontroller using the PICkit™ 1 Flash Starter Kit as a platform.
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XL_STAR S08
XL_STAR S08
Freescale / element14
The XL_STAR board allows a user to develop, download and debug up to 64KBytes of 'C' or assembler object code for the MC9S08MM128 MCU using CodeWarrior for MCUs V6.3 Special Edition, a professional IDE, for just the cost of the board. Connected to the MM128 MCU, via I2C, is the MMA8451Q a three axes accelerometer. The board is pre-programmed with firmware that uses the MM128 MCU and MMA8451Q accelerometer to drive a star array of LEDs.
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EK-H4 Humidity Evaluation Kit
EK-H4 Humidity Evaluation Kit
Sensirion
The evaluation kit EK-H4 combines an easy-to-use plug-and-play system for sensor evaluation with a data logging equipment for simultaneous recording of humidity and temperature.
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EK-H5 Humidity Evaluation Kit
EK-H5 Humidity Evaluation Kit
Sensirion
The evaluation kit EK-H5 is a very simple system to test and evaluate Sensirion's humidity and temperature sensors.
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APTINA IMAGING SensorDemo Kit Quick Start GuideMT9P031I12STCD ES MT9P031I12STCClick here
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MICROCHIPSmoke DetectorRE46C190 - 3V Photo Smoke Detector ICRE46C190Click here
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