Abstract: Disclosed are passive reflector radio communications systems, such as for UHF frequencies or greater than UHF frequencies, and related deployment systems and devices that provide underground communications. Embodiments of the system include reflector elements to provide passive radio communications, structural frameworks to support and orient the reflector elements, methods for calculating reflector size, shape, and position corresponding to a desired wavelength, and deployment methods and devices to install the communication system at a desired location. The passive reflectors can be placed in a folded or otherwise compact mode, for transport into underground tunnels. Once at the desired installation location, the system can be installed, with the reflectors positioned appropriately for the radio frequencies used at the location.

Abstract: A system for installing a sensor, the system comprising: a puncture device for puncturing a skin of a body comprising: a casing defining a cavity; an elongated member a sharp end; and a sensor assembly for measuring data about the body, the sensor assembly comprising: a sensing unit comprising a sensor for measuring the data and being engageable with the elongated member; a data unit for collecting the data, the data collecting unit being receivable within the cavity of the casing; and a communication cable extending between the sensing unit and the data collecting unit for transmitting the data to the data unit, the sensor assembly being removably securable to the puncture device by inserting the data unit in the cavity of the casing and engaging together the sensing unit and the elongated member, the communication cable being tensed when the sensor assembly is secured to the puncture device.

Abstract: A system for installing a sensor, comprising: a puncture device comprising: a casing defining a cavity; an elongated member a sharp end; and a sensor assembly for measuring data about the body, the sensor assembly comprising: a sensing unit comprising a sensor for measuring the data and being engageable with the elongated member; a data unit for collecting the data, the data collecting unit being receivable within the cavity of the casing; and a communication cable extending between the sensing unit and the data collecting unit for transmitting the data to the data unit; wherein the sensor assembly is removably securable to the puncture device by inserting the data unit in the cavity of the casing and engaging together the sensing unit and the elongated member, the communication cable being tensed when the sensor assembly is secured to the puncture device.

Abstract: A system for installing a sensor, comprising: a puncture device comprising: a casing defining a cavity; an elongated member a sharp end; and a sensor assembly for measuring data about the body, the sensor assembly comprising: a sensing unit comprising a sensor for measuring the data and being engageable with the elongated member; a data unit for collecting the data, the data collecting unit being receivable within the cavity of the casing; and a communication cable extending between the sensing unit and the data collecting unit for transmitting the data to the data unit; wherein the sensor assembly is removably securable to the puncture device by inserting the data unit in the cavity of the casing and engaging together the sensing unit and the elongated member, the communication cable being tensed when the sensor assembly is secured to the puncture device.