Removable computer peripheral device, for e.g. detecting intrusion of infrasound caused by opening of e.g. room door, has connection unit to connect peripheral and computer station, and detector detecting intrusion of infrasound

摘要

The device has a removable connection unit (1) i.e. universal serial bus (USB) connector, for assuring mechanical connection between a computer peripheral and a computer station, transmission i.e. series transmission of signals between the peripheral and the station and an electric power supply of the peripheral by the computer station. An infrasound sensor (3) integrates a pressure sensor (8) or pressure variation sensor, and a housing (6) is formed with an opening (11). An infrasound intrusion detector detects intrusion of infrasound into a room, dwelling or vehicle.