Sensor network system

摘要

A sensor network system is provided with a plurality of sensor terminals disposed in a predetermined area, and a monitoring center device that collects sensing data wirelessly transmitted from each of the plurality of sensor terminals. The sensor terminals wirelessly and intermittently transmit a transmission signal including sensor identification information and the latest sensing data from the sensors. The monitoring center device has the function of acquiring positional information of the sensor terminals in the predetermined area, and accumulates each item of the sensing data from the sensor terminals as time-series data in association with information about the time of acquisition. On the basis of the positional information of the sensor terminals and the time-series data of the accumulated sensing data, a time-series variation of an environmental element in the predetermined area is visually presented. The sensor network system enables monitoring of detailed environmental changes corresponding to differences in position.

主权项

1. A sensor network system comprising:
a plurality of sensor terminals which are driven with a stand-alone power supply and provided in a predetermined area in which one or more sensors are connected to each of the sensor terminals provided at a predetermined position in the predetermined area to wirelessly transmit sensing data of one or more environmental elements sensed with the one or more sensors; and a monitoring center device collecting the sensing data wirelessly transmitted from the sensor terminals, each of the sensor terminals having a wireless transmitter that wirelessly and intermittently transmits its terminal identification information, sensor identification information identifying each type of the one or more sensors and latest sensing data sensed by each of the one or more sensors, the monitoring center device comprising: a processor that acquires positional information of the sensor terminals in the predetermined area; a memory that accumulates time-series data of the sensing data transmitted from the sensor terminals as corresponding to acquisition times of the sensing data; and a display that displays a visualized time-series variation of the sensing data of the one or more environmental elements detected by the one or more sensors in the predetermined area by using the positional information of the sensor terminals and the time-series data of the sensing data, wherein the monitoring center device regards a receiving time of a transmission signal including the sensing data as the acquisition time of the sensing data to accumulate the sensing data, and the transmission signal does not include the acquisition time of the sensing data.