| 摘要 |
An apparatus and a method for restoring loss data in a sensor network environment are provided to reduce the delay of the data transmission by analyzing compressed data after restoring the compressed data at a remote place. A sensor node unit(10) is installed in a plurality of positions and measures a temperature, humidity, illuminance, an ultrasonic wave, the vibration, and the sensor information of an accelerator. The sensor node unit transmits the calculated sensor information to a sink node(20) after calculating the measured sensor information. The sink node unit receives the sensing data from the sensor node unit and transmits the sensing data to a data logger(30). If the error exists in the transmitted data, the data logger restores loss data through the PCA algorithm program and stores the restored data in a text or database. The data logger compresses the data of the collected high level to the data of the low level using the PCA algorithm program. A remote server(40) stores the restored data after restoring the compressed data and a main vector used for compression through the PCA algorithm program.
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