Selective intrusion detection systems

#The present invention is directed to the field of intrusion detection and alarm systems, and more particularly, to a novel selective intrusion detection system. The selectivity is aimed towards the capability of distinguishing humans from other moving targets that will be used in a variety of fields related to security systems.

#The concept of intrusion detection systems is well known in the art such as U.S. Pat. No. 6,239,736. However such systems do not contain any selectivity means as disclosed in U.S. Pat. No. 6,239,736. Therefore in many applications, such systems according to the prior art, will be prone to unwanted alarms from for example animals, geo-seismic activities, environmental disturbances (street traffic, water running through pipes, swaying trees, ceiling fans, oscillating fans, air conditioning systems, and the like), that may be moving in or near the surveillance space. For example, for indoor residential settings, pets are a major source of unwanted alarm triggers. In such applications, it is desired to have an alert provided upon the presence of a human intruder, and to forego an alert upon the presence of pets and other moving targets.

#Prior attempts have been made to distinguish the human presence from the presence of other moving targets, but with limited success. Current technologies for monitoring, such as video cameras or microphone arrays, typically involve sensors with high spatial resolution. Such sensors are relatively complex and unreliable as they may require a human in the process loop to watch the signal in real time and manually enter the decision about the signal analyses of the operators observation, that is, whether the signal from such sensor originates from a human or from another moving target. Moreover, video surveillance will present privacy concerns, especially in residential and office surveillance systems.

#So that those skilled in the art to which the subject disclosure appertains will readily understand how to make and use the devices of the subject disclosure without undue experimentation, preferred embodiments thereof will be described in detail herein below with reference to certain figures.

#FIG. 1 is a schematic diagram depicting the preferred embodiment in its application showing a surveillance space with a human and other moving targets;

#FIG. 2 is a schematic block diagram of an embodiment;

#TABLE 1 is a list of First Order Time Features;

#TABLE 2 is a list of Second Order Time Features;

#TABLE 3 is a list of functionalities of the selectivity mode switch;