Patent ID: 7239278
Filing Date: 2007-07-03
Classification: G01S

Abstract:
1. A detection system for detecting a position of a moving object based on information about a transmitter that the moving object carries while moving around in an observation area, comprising: a plurality of receivers receiving the information transmitted from the transmitter; a sensitive level setup control section which looks into a sensitiveness level setup file, including a sequence of levels of sensitiveness to received signals transmitted from the plurality of receivers, which is a sequence expressed by values, as components, representing intensity of sensitiveness to the received signals, and setup IDs specific of the sequence of levels of sensitiveness to the received signals, and finds the sequence of levels of sensitiveness to the received signals corresponding to the setup ID; a switching instruction section, which designates a specific setup ID in order to set up levels of sensitiveness to the received signals transmitted from the plurality of receivers; a sensitiveness level switching section which receives from the sensitiveness level setup control section a sequence of levels of sensitiveness to received signals corresponding to the specific setup ID received from the switching instruction section; a receiver control section which converts, for each component, a sequence of levels of sensitiveness to received signals received from the sensitiveness level switching section into signals for designating levels of sensitiveness to received signals corresponding to the respective receivers, and transmits the signals for designating levels of sensitiveness to received signals; a received signal process section which receives receiver information transmitted from the receivers; an external event acquisition section which receives the receiver information as position detection data, and acquires changed values in the position detection data when any changes occur in the position detection data; and an abnormal situation detection section which looks into an abnormal situation file, registered in advance, which includes a sequence of abnormal situations and a setup ID specific to the sequence of levels of sensitiveness to received signals which is set when an abnormal situation listed in the sequence of abnormal situations occurs, and finds, when there is a sequence of abnormal situations corresponding to the changed values in the an abnormal situation file, a setup ID specific of a sequence of levels of sensitiveness to received signals corresponding to the sequence of abnormal situations.