Sensors, systems, and methods for data center security are provided. In one example, a data center monitoring system includes at least one sensor configured to be attached to a fixture in a data center. The sensor is configured to transmit an optical signal towards a reflective component for detecting an unauthorized access attempt to the fixture. The system also includes at least one monitoring device configured to communicate with the at least one sensor. The monitoring device is configured to receive a signal from the at least one sensor indicative of the unauthorized access attempt to the fixture.

A system, including: a radar including a transmitter and a receiver, the transmitter configured to transmit an electromagnetic wave; a reflector placed a predetermined distance away from the radar, the reflector configured to reflect the transmitted electromagnetic wave back to the receiver; and a control unit coupled to the radar and configured to measure a magnitude of the reflected electromagnetic wave received at the receiver from the reflector by measuring Doppler signal corresponding to the predetermined distance, wherein the control unit is configured to measure a reference value of the magnitude of the reflected electromagnetic wave when no intrusions are occurring, and wherein the control unit is configured to trigger an alarm when the magnitude of the reflected electromagnetic wave changes from the reference value.

A process executes at an electronic system. The process identifies device characteristics of an imaging device that includes signal emitters and signal detectors. The process illuminates a field of view by signals from the signal emitters according to a modulation signal generated by the imaging device. At each of the signal detectors, the process obtains a response signal, and samples the response signals to form a response vector. The process obtains a lookup table corresponding to the modulation signal and the device characteristics. The field of view is partitioned into a 3-dimensional plurality of voxels, and the lookup table specifies, for each voxel, expected signals received by the signal detectors when the voxel is filled and the signal emitters illuminate the field of view according to the modulation signal. The process compares the response vector to the lookup table to determine which voxels are filled.

Systems and methods for intrusion detection, including an intrusion detection device configured to send a light source to a retroreflector and receive reflected light from the retroreflector. An alarm is activated if the light source is not detected by the intrusion detection device. The intrusion detection device includes a computing device coupled to a preamplifier, a superregenerative receiver, and a digitizer.

Systems and methods for intrusion detection, including an intrusion detection device configured to send a light source to a retroreflector and receive reflected light from the retroreflector. An alarm is activated if the light source is not detected by the intrusion detection device. The intrusion detection device includes a computing device coupled to a preamplifier, a superregenerative receiver, and a digitizer.

Wintertime precipitation (snow, Ice, rain over snow) cause more than 89% of structural failures in the US each year*. Insurance industry estimates losses exceed $2 Billion USD each year. These estimates do not include soft costs like lost business days or revenue. ASCE Snow Induced Building Failures Report-August 2012

Roof snow removal is a labor intensive & hazardous operation. Best practices mandate fall protection and careful operational supervision both on the roof and at ground level. The cost to a building owner can range widely depending on the conditions and the type of building and its unique features.

With cost ranging from $1.00 to $3.00 per square foot, a reliable and accurate system for measuring roof loading will give property managers a way to safely and effectively manage snow load monitoring and removal.

Wintertime precipitation (snow, Ice, rain over snow) cause more than 89% of structural failures in the US each year*. Insurance industry estimates losses exceed $2 Billion USD each year. These estimates do not include soft costs like lost business days or revenue. ASCE Snow Induced Building Failures Report-August 2012

Roof snow removal is a labor intensive & hazardous operation. Best practices mandate fall protection and careful operational supervision both on the roof and at ground level. The cost to a building owner can range widely depending on the conditions and the type of building and its unique features.

With cost ranging from $1.00 to $3.00 per square foot, a reliable and accurate system for measuring roof loading will give property managers a way to safely and effectively manage snow load monitoring and removal.

A threat warning system adapted to a virtual reality display device is provided, which includes a detecting module which has a LIDAR, for sensing distance and direction of at least one external object; a tri-axils stabilizer for stabilizing the light scanning device; a warning module for producing a warning signal to alert the user of a direction of an external object; a control module electrically connected to the detecting module and the warning module; and the control module determining a distance of the external object based on the distance information. When a distance between the external object and the user has been determined smaller than the warning distance, the warning module sends a threat warning signal to the user. A threat warning method adapted to a virtual reality display device is also provided.

A threat warning system adapted to a virtual reality display device is provided, which includes a detecting module which has a LIDAR, for sensing distance and direction of at least one external object; a tri-axils stabilizer for stabilizing the light scanning device; a warning module for producing a warning signal to alert the user of a direction of an external object; a control module electrically connected to the detecting module and the warning module; and the control module determining a distance of the external object based on the distance information. When a distance between the external object and the user has been determined smaller than the warning distance, the warning module sends a threat warning signal to the user. A threat warning method adapted to a virtual reality display device is also provided.

Optical data transceiver is used to illuminate a secured space with an optical data signal which has been modulated to contain a first data sequence. One or more retroreflected optical data signals are received at the optical data transceiver from reflector elements disposed in the secured space. The retroreflected optical data signals are authenticated and a security event notification is selectively communicated to an enterprise security management controller if a variation occurs in regard to at least one retroreflected optical beam condition. The variation can involve a disruption of the optical beam and/or a displacement of the optical beam.