A method and system for determining a whole-body averaged specific absorption ratio (SAR.sub.wb) in a person comprises positioning an exposimeter on the person's body and providing a chamber forming an electromagnetic (EM) cavity and comprising a radiofrequency emitter and receiver; determining a first reverberation time of decay of EM power and a free-space incident power density in the chamber when the person is absent, and determining, a second reverberation time of decay of EM power in the chamber and a reference received power, received by the exposimeter, when the person is present in the chamber; and determining an absorption cross section of the person taking the first and second reverberation time and a volume of the chamber into account, determining a calibration factor relating a received power on the exposimeter to the SAR.sub.wb, measuring a received power using the exposimeter, and determining the SAR.sub.wb by applying the calibration factor.

A device and method for determining power density measurements of electromagnetic (EM) transmissions from an antenna of a wireless electronic device are disclosed. The method can include determining one or more worst case configurations within an exposure plane based on a power density distribution of the antenna in free space. The method can also include measuring power density distribution across a first plane at a first distance from the exposure plane and across a second plane at a second distance from the exposure plane. The method can also include first back transforming power density distribution of the first plane to the second plane, second back transforming power density distribution from the first plane to the exposure plane, and third back transforming power density distribution from the second plane to the exposure plane, for the one or more worst case configurations.

The present invention relates to systems and methods for detecting biomaterial anomalies in a test subject for diagnosing existing and potential medical conditions. The general technique utilized is to expose a portion of the test subject to low doses of RF electromagnetic energy. Different biomaterials in a test subject may be differentiated and identified by characterizing their electromagnetic properties based on observed parameters, e.g., electromagnetic energy absorbed, thermal energy created, and electromagnetic energy emitted, during irradiation of the test subject.

This invention allows for the efficient utilization of multiple frequency bands allowed by the FCC, as well as a more precise distribution of electromagnetic energy to the test subject.

A system may include a device that controls power to an electrical component of an electrical power distribution system. The system may also include a voltage detection device that may detect a presence of a voltage within a distance. The system may further include a control system that may receive location information via a receiver communicatively coupled to the control system, and adjust more operations of the device based on at least in part of the location information. The location information may be transmitted by the voltage detection device in response to detecting that the presence of the voltage is within the distance. The location information may correspond to the electrical component.

A communication device that emits radio frequency signals having a module to determine when the radio frequency signals may be present and are potentially harmful, and to activate a remedial signal generator if the radio frequency signals are considered to be potentially harmful; and the power to operate the module is from a power source that can be charged using wireless charging techniques.

The present invention provides a radio field intensity measurement device having a display portion with improved visibility, in the case of measuring a weak radiowave from a long distance. In the radio field intensity measurement device, a battery is provided as a power source for power supply and the battery is charged by a received radiowave. When a potential of a signal obtained from the received radiowave is higher than an output potential of the battery, the power is stored in the battery. On the other hand, when the potential of the signal obtained from the received radiowave is lower than the output potential of the battery, power produced by the battery is used as power to drive the radio field intensity measurement device. As an element to display the radio field intensity, a thermochromic element or an electrochromic element is used.

A wearable electric field detector is configured to detect an electric field generated by a high-voltage electrical source in an environment, and includes a first antenna, a second antenna, an electrical circuit board operatively coupled to the first antenna and the second antenna, a power source coupled to the circuit board, and a plurality of indicators operatively coupled to the circuit board. The first antenna and second antenna are mounted perpendicular to the circuit board. The detector provides an alert to the user indicative of a strength of a detected electric field. An enclosure houses the first antenna, the second antenna, the circuit board, the power source, and the indicators. The enclosure may be worn by the user in a vertical orientation, a horizontal orientation, and in an orientation disposed between the vertical orientation and the horizontal orientation.

A device includes a housing, one or more sensors configured to detect at least one of a voltage or a current in proximity to the device, one or more lighting elements configured to output light responsive to the one or more sensors detecting the at least one of the voltage or the current in proximity to the device, one or more speakers configured to output audio responsive to the one or more sensors detecting the at least one of the voltage or the current in proximity to the device, one or more network interfaces configured to communicatively couple the device to one or more additional devices, and one or more fastening mechanisms configured to secure the device to a surface.

A device includes a housing, one or more sensors configured to detect at least one of a voltage or a current in proximity to the device, one or more lighting elements configured to output light responsive to the one or more sensors detecting the at least one of the voltage or the current in proximity to the device, one or more speakers configured to output audio responsive to the one or more sensors detecting the at least one of the voltage or the current in proximity to the device, one or more network interfaces configured to communicatively couple the device to one or more additional devices, and one or more fastening mechanisms configured to secure the device to a surface.

Methods and systems are provided in which an electric field above a threshold strength may be detected at one or more wearable articles and in which at least a haptic actuator of the one or more wearable articles is energized in response so as to warn the wearer and thereby effectively prevent electrical injury even if other modes of notification are unavailable.