An object detection system includes a reader waveguide (101) formed as an open transmission line, an RFID tag (102) placed above the reader waveguide (101), a signal strength acquisition unit (103) that acquires signal strength of a read signal read from the RFID tag (102) by electromagnetic coupling through the reader waveguide (101), and an object detection unit (104) that detects physical characteristics of an object (105) corresponding to the acquired signal strength based on a relationship between a plurality of (three or more values of) signal strength of the read signal and physical characteristics of the object to be detected.

Systems and methods for locating buried utilities in conjunction with associated electro-magnetic marker devices are disclosed. A marker device may include a marker device antenna and an electronic circuit operatively coupled to the marker device antenna. The electronic circuit may include at least two resonant circuits, including a first resonant circuit formed in combination with the marker device antenna for receiving an excitation signal at a first frequency from a marker excitation device. The received excitation signal may be converted into a power supply by a power circuit for powering the electronic circuit. Responsive to the received excitation signal, a processing element provided in the electronic circuit may generate an output signal at a second frequency, which is substantially different from the first frequency. The generated output signal may be tuned by a second resonant circuit and provided to the marker device antenna.

Various apparatuses for use in a wireless network are disclosed. A first apparatus comprises two antennae oriented orthogonally, a biosensor capable of reading a user's fingerprint, and a housing comprising a groove for guiding a user's finger, the groove physically separating the antennae, effectively creating a radome for each antenna. A second apparatus comprises a printed circuit board (PCB) a port, a shell enclosing the PCB, and at least one horseshoe gasket, the shell and gasket creating a waterproof seal isolating the port and the external environment from the rest of the PCB. A third apparatus comprising a bracket for attaching a housing to a building material, an aiming annulus for aiming the housing and the housing. Wherein two or more of the bracket, aiming annulus and housing may be joined in order to mount and aim the housing using one or more structures on the components.

A method includes determining a concentration of one or more components of a subterranean fluid, and adjusting or maintaining at least one operating parameter of a wellbore servicing operation based on the determining of the concentration of the one or more components. The subterranean fluid includes a fluid obtained from a subterranean formation during the wellbore servicing operation, and the determining of the concentration of the one or more components includes contacting a sample of the subterranean fluid with a microelectromechanical system (MEMS) device to provide a sample response indicative of the concentration of the one or more components.

A method includes determining a concentration of one or more components of a subterranean fluid, and adjusting or maintaining at least one operating parameter of a wellbore servicing operation based on the determining of the concentration of the one or more components. The subterranean fluid includes a fluid obtained from a subterranean formation during the wellbore servicing operation, and the determining of the concentration of the one or more components includes contacting a sample of the subterranean fluid with a microelectromechanical system (MEMS) device to provide a sample response indicative of the concentration of the one or more components.

A public utility marker assembly includes a water marker, a sewer marker, a gas maker, an electric marker and a communication marker that is each insertable into ground to mark the location of a respective an underground water line, underground sewer line, underground gas line, underground electric line or underground communication line. Each of the water marker, the sewer marker, the gas marker, the electric marker and the communication marker are comprised of a water soluble material. In this way each of the water marker, the sewer marker, the gas marker, the electric marker and the communication marker will decompose after a sufficient duration of time to protect the environment.

A public utility marker assembly includes a water marker, a sewer marker, a gas maker, an electric marker and a communication marker that is each insertable into ground to mark the location of a respective an underground water line, underground sewer line, underground gas line, underground electric line or underground communication line. Each of the water marker, the sewer marker, the gas marker, the electric marker and the communication marker are comprised of a water soluble material. In this way each of the water marker, the sewer marker, the gas marker, the electric marker and the communication marker will decompose after a sufficient duration of time to protect the environment.

The invention pertains to a method for detecting a tag (100) in an area monitored by one or more beacons (200), the tag (100) comprising a magnetic induction module (121) and a transmitter (140), the method comprising the following steps at said tag: receiving, by means of said magnetic induction module, a first beacon message as variations in a magnetic field, said first beacon message comprising beacon information; extracting said beacon information from said first beacon message; and conditionally on said beacon information, transmitting a localisation message by means of said transmitter (140).

The invention pertains to a method for detecting a tag (100) in an area monitored by one or more beacons (200), the tag (100) comprising a magnetic induction module (121) and a transmitter (140), the method comprising the following steps at said tag: receiving, by means of said magnetic induction module, a first beacon message as variations in a magnetic field, said first beacon message comprising beacon information; extracting said beacon information from said first beacon message; and conditionally on said beacon information, transmitting a localisation message by means of said transmitter (140).

Integrated buried utility locator systems, including a locator including a marker device excitation transmitter a buried utility locator along with one or more marker devices, are disclosed. In operation a marker device excitation signal is sent from the locator at least partially simultaneously to receiving and processing a buried utility signal.