231311 ⎘
Arrangements in telecontrol or telemetry systems for selectively calling a substation from a main station, in which substation desired apparatus is selected for applying a control signal thereto or for obtaining measured values therefrom; Calling by using continuous ac using single different frequencies
Sensor management unit, sensing data distribution system, sensing data evaluation method, and sensing data evaluation program
#2Sensor device, background noise data transmission method, and background noise data transmission program
#3System and method for providing a distributed directional aperture