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: 1.16). 03/2011; DOI: 10.1109/TCE.2011.5735496
Source: IEEE Xplore

ABSTRACT 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.

  • Source
    [Show abstract] [Hide abstract]
    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.
    IEEE Transactions on Consumer Electronics 11/2014; 60(4):675-680. DOI:10.1109/TCE.2014.7027342 · 1.16 Impact Factor
  • Source
    [Show abstract] [Hide abstract]
    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.
    International Conference on Electronics and Communication Systems (ICECS), Coimbatore; 02/2014
  • [Show abstract] [Hide abstract]
    ABSTRACT: In this paper, a CMOS fourth-order low-frequency bandpass filter for passive pyroelectric infrared sensors is presented. The sensor is intended for use in wireless sensor nodes, demanding strict low power requirements. The final use of these sensor nodes is an ambient assisted living system for elderly people living alone at home. A NICERA RE200B passive pyroelectric infrared sensor with a measured steady operation current of 3.5 mu A has been used. The filter has been implemented cascading two biquad OTA-C filtering stages. OTA-C topology has been selected due to the extremely large time constant of the filter. The second-order stage circuit has been prototyped in a 0.35- mu m CMOS process and power consumption is below 6.5 mu W from a 3 V supply. A central frequency of 1.49 Hz, with Q = 0.5, and a gain of 45 V/V was achieved.
    IEEE Sensors Journal 11/2014; 14(11):1-1. DOI:10.1109/JSEN.2014.2333538 · 1.85 Impact Factor


Available from