Design and Implementation of a Home Embedded Surveillance System with Ultra-Low Alert Power

Dept. of Electr. Eng., Fu-Jen Catholic Univ., Taipei, Taiwan
IEEE Transactions on Consumer Electronics (Impact Factor: 1.05). 03/2011; 57(1):153 - 159. DOI: 10.1109/TCE.2011.5735496
Source: IEEE Xplore


In this paper we design and implement a home embedded surveillance system with ultra-low alert power. Traditional surveillance systems suffer from an unnecessary waste of power and the shortcomings of memory conditions in the absence of invasion. In this design we use Pyroelectric Infrared sensors (PIR) and pressure sensors as the alert group in windows and doors where an intruder must pass through. These low-power alert sensors wake up the MCU (Micro Controller Unit) which has power management for the ultrasonic sensors and PIR sensors indoors. This state transition method saves a large number of sensors required for the alert power. We also use the Majority Voting Mechanism (MVM) to manage the sensor groups to enhance the probability of multiple sensors sensing. After the MCU sends the sensor signals to the embedded system, the program starts the Web camera. Our sensing experiment shows that we reduce the system's power consumption.

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    • "As pointed out by Wachs et al. [9], there are only a few practical vision based hand gesture recognition systems. Current Pyro-electric Infrared (PIR) hand gesture recognition systems are all based on the on/off decisions of the analog circuitry of the PIR sensor [10]-[12]. Wojtczuk et al. [13] use a 4x4 PIR sensor array to obtain a switching pattern of PIR sensors to increase the recognition rates. The 4x4 PIR sensor array has the capability to recognize a number of hand gestures but it cannot distinguish face and body gestures from hand gestures, because PIR sensors respond to all hot bodies in their viewing range. "
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    ABSTRACT: In this paper, a multimodal hand gesture detection and recognition system using differential Pyro-electric Infrared (PIR) sensors and a regular camera is described. Any movement within the viewing range of the differential PIR sensors are first detected by the sensors and then checked if it is due to a hand gesture or not by video analysis. If the movement is due to a hand, one-dimensional continuous-time signals extracted from the PIR sensors are used to classify/recognize the hand movements in real-time. Classification of different hand gestures by using the differential PIR sensors is carried out by a new winner-take-all (WTA) hash based recognition method. Jaccard distance is used to compare the WTA hash codes extracted from 1-D differential infrared sensor signals. It is experimentally shown that the multimodal system achieves higher recognition rates than the system based on only the on/off decisions of the analog circuitry of the PIR sensors 1 . Index Terms — Hand gesture recognition, infrared sensors, sensor fusion, wavelet transform, winner-take-all (WTA) hash method.
    Full-text · Article · Nov 2014 · IEEE Transactions on Consumer Electronics
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    • "The data collectirlg unit is composed of the sensors, ARM microcontroller and MMS Modem. When the ultrasonic or pyroectric infrared detector finds that some people intrudes[3][5] into the house abnormally; or when the smoke sensor detects too high indoor smoke particles; or when the gas sensor detects over proof combustible gas concentration, the processing unit will send encoded alarm signal to the home control centre through the wireless sensor network. Once the wireless control centre receives signal as alarm, it will wake up the microcontroller unit. "
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    ABSTRACT: In this paper we design and implement an embedded surveillance system by use of ultrasonic signal coding of ultrasonic sensors with multiple pyroelectric infrared sensors (PIR) to detect an intruder in a home or a storehouse. If the sensors detect any trespasser, then the camera will captured the image. After that the image will compared with the database. If it is not similar then that image will be send to the number which was stored in the MMS modem as MMS. The PIR sensors are placed on the ceiling, and the ultrasonic sensor modules are placed in a line direction may consist of a transmitter and a receiver. Ultrasonic coding signal is used to reduce high miss rate. Majority Voting Mechanism (MVM) is used to manage both ultrasonic and PIR sensors. In addition fire and smoke sensors are used to detect the fire inside the home. If the sensor detects gas or smoke it will automatically switch on the motor.
    Full-text · Conference Paper · Feb 2014
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    ABSTRACT: In this paper we present a way to reduce the standby power consumption of a PIR-sensor-based lighting device. Generally although a PIR-sensor-based lighting device will turn on when motion is detected, and will turn off when the motion disappears, the device still consumes 1-3 W power when the lamp is off. In our design the device consumes 0.007 W when the light is off, and is not only easy to set up but also inexpensive. Our circuit supplies the lamp with power when motion is detected; when the motion disappears it turns the lamp off, and the electric power is shut off in order to reduce the standby power. We use an MCU which receives signals from a PIR sensor which detects any individual approaching the device. The MCU controls the SSR On/Off when used as a lighting switch for shutting off the standby power. The MCU monitoring program provides automatic detection of any individual by means of the PIR sensor. The MCU has internal modules to simplify the hardware circuit design. The circuit component count, cost and power consumption are low.
    Full-text · Article · Aug 2011 · IEEE Transactions on Consumer Electronics
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