Abstract: Electroacoustic device that includes a body, an electrode to be electrically powered, named hot electrode, and an electrode to be electrically grounded, named ground electrode. The body includes a piezoelectric part or the electroacoustic device further including a piezoelectric part different from the body. The hot electrode includes a hot track spiraling around a spiral axis. The radial step between two consecutive coils of the hot track decreasing radially from the spiral axis. The hot electrode and the ground electrode are arranged on the piezoelectric part such as to define a wave transducer configured to generate a focalised ultrasonic vortex propagating in the body and/or, when a fluid medium is acoustically coupled with the electroacoustic device, in the fluid medium.

Abstract: Logging while drilling (LWD) mechanical calipers are disclosed. An example apparatus to characterize a bore includes a drill collar, a sliding sleeve that moves longitudinally relative to the drill collar, and a sliding block operatively coupled to the sliding sleeve and movable relative to the drill collar. The example apparatus also includes a caliper arm operatively coupled to the sliding block, where the caliper arm is to displace radially outward towards an inner diameter of the bore based on movement of the sliding block, and a caliper sliding sensor to measure a movement of the sliding block.

Abstract: A system and method for evaluating a subterranean earth formation as well as a method of steering a drill bit in a subterranean earth formation. The system comprises a logging tool that is operable to measure formation data and locatable in a wellbore intersecting the subterranean earth formation. The system also comprises a processor that is in communication with the logging tool. The processor is operable to calculate multiple distance-to-bed-boundary (DTBB) solutions using the measured formation data, identify DTBB solutions that satisfy a threshold, convert the identified solutions into pixelated solutions by dividing the identified solutions into pixels, generate a formation model based on the pixelated solutions, and evaluate the formation using the generated formation model.

Abstract: A method for obtaining accuracy gravity coefficients out of three orthogonally oriented accelerometer devices and a thermometer by computing, using a pre-programmed micro-control unit processor, temperature errors, bias error coefficients, sensitivity error coefficients, and orthogonality error coefficients during measurement while drilling operations. Particularly, the method uses voltage data values of the three orthogonally oriented accelerometers to compute said error coefficients which provides for zero-error positioning of the MWD tool during long-term downhole surveying as well as while facing high-shock, vibrations, and high temperatures.

Abstract: A sleep monitoring circuit and a sleep monitoring apparatus are provided, in the circuit: a bidirectional receiving unit includes an electrode pad, and when the electrode pad receives a power supply signal, a handover control unit generates a charging control signal according to the power supply signal, so as to control a charging unit to perform charging management; when the electrode pad receives a bioelectric signal, a command acquisition unit acquires from a user a sleep monitoring command, so as to trigger an enabling unit to generate a monitoring handover signal, the handover control unit outputs a bioelectric signal to a bioelectric signal pick-up unit according to the monitoring handover signal, causing the bioelectric signal pick-up unit to extract feature information from the bioelectric signal and output same to a sleep monitoring unit, and the sleep monitoring unit generates a person sleep monitoring result according to the feature information.

Abstract: Methods and systems for generating pulses in drilling fluid are described. The methods include driving rotation of a rotor relative to a stator of a pulser assembly in an oscillatory manner. The oscillatory manner includes rotating an obstructing element from a middle position to a first blocking angle position and rotating the obstructing element from the first blocking angle position to a second blocking angle position such that selective obstruction occurs. Rotation of the at least one obstructing element selectively obstructs a stator flow passage when drilling fluid is flowing through the drill string to generate a pressure pulse in the drilling fluid and the oscillatory manner is an oscillation of the obstructing element between the first blocking angle position and the second blocking angle position such that a single oscillation is between two obstructed states of the stator flow passage.

Abstract: The disclosure is directed to a well system environment communication system comprising of an acoustic communicator capable of communicating encoded data with a first wireless transceiver through a fluid medium and the first wireless transceiver capable of communicating encoded data with a second transceiver through a non-fluid medium. In one example, an acoustic communicator is communicatively coupled with a downhole tool allowing the downhole tool to communicate indirectly with a well system controller. In another aspect of the disclosure, a method is described wherein an acoustic communicator located in a wellbore can encode data from a downhole tool and communicate the data through a fluid medium to a first wireless transceiver and the first wireless transceiver can communicate with a second transceiver through a non-fluid medium.

Abstract: A method for monitoring a primary variable is carried out in a device having access to a set of sensors. The method includes the steps of receiving, from a network service, a series of forecasted values for the primary variable, each forecasted value being associated with one of a series of future time points; for at least one of the future time points, predicting a value for the primary variable using data of at least one secondary variable captured by a subset of the set of sensors, comparing the predicted value to the forecasted value associated with the future time point, and switching to a different subset of the set of sensors, if the predicted value deviates from the forecasted value with more than a specified threshold value.

Abstract: A set top box receives from a remote control device one or more of a codeset identifier, data indicative of a brand and model for a consumer electronic device, and remote control diagnostic information. The set top box then causes information representative of the received codeset identifier, data indicative of a brand and model for a consumer electronic device, and remote control diagnostic information to be displayed in a display device associated with the set top box.

Abstract: A sensor based monitoring system (SBMS) for a wireless communications network, a monitoring device for the SBMS, and a SBMS server are provided herein. In one example, the SBMS includes: (1) a monitoring device configured to collect antenna data of an antenna mounted on a communications structure of a wireless communications network and communicate the antenna data over a wireless network, and (2) a SBMS server configured to provide actionable intelligence based on the antenna data and system data of the wireless communications network from at least one other data source.

Abstract: Logging of data by a downhole tool disposed in a borehole may be affected by tool wave effects. The tool waves appear in the first echo of casing wave arrivals and the amplitudes may be much larger than casing wave arrivals. The estimates of casing wave amplitude are biased due to these tool wave arrivals when using conventional cement-bond logging (CBL) processing. An automated adaptive inversion-based array processing for CBL evaluation using a downhole tool provides an improvement in the calculation of a bonding index.

Abstract: Described herein is a method and techniques for subsurface monitoring. The system includes a downhole including a casting with a lumen, a wireless power transmitter within the casting, a micro-sensor cement mixture including a plurality of micro-sensors mixed with a cement, the micro-sensor cement mixture on a surface of the casting opposite from the lumen, a relay system including a plurality of relays, each of the plurality of relays including a charging component and a surface receiver. The wireless power transmitter configured to transmit a wireless power signal. At least one micro-sensor of the plurality of micro-sensors is configured to receive the wireless power signal, sense at least one attribute, and transmit a sensed signal. A series of relays are configured to receive the sensed signal and re-transmit the sensed signal and a surface receiver is configured to receive the sensed signal at a third time after the second time.

Abstract: A method includes receiving, from a first head end system (HES), a first raw file including a first set of events in a first HES specific format, and modifying the first set of events in the first raw file by a first HES adapter to create a first unified formatted file. The first unified formatted file is in a unified format, and the first HES adapter is connected to the first HES. The method further include transforming, by a core HES adapter, the first unified formatted file to a first data management formatted file according to a data management format, and consuming the first data management formatted file.

Abstract: An ultrasonic flowmeter (USM) includes a meter body including a pipe section for flowing a fluid therethrough including a first and second ultrasonic transducer, top-works including a housing and a PCB, a controller coupled to the ultrasonic transducers through a transmitter and/or receiver, and an accelerometer and/or an acoustic sensor for sensing a vibration on the pipe section and for providing an output signal coupled to the controller. The electronics are communicatively coupled to the meter body and the housing is mechanically coupled to the meter body. The controller analyzes the output signal to identify ?1 vibration frequency and compares the vibration frequency to a predetermined sensitive frequency range for the USM. When the vibration frequency is determined to be within the predetermined frequency range, the controller implements an anti-vibration operating mode by increasing a measurement time when measuring the fluid flow and/or adding additional data processing task(s).

Abstract: The present invention is a sensor device comprising: a housing; a processing unit assembly disposed within the housing, wherein the processing unit comprising a high frequency oscillator, a first voltage meter, a low frequency oscillator, a second voltage meter; a probe having a predetermined shape and profile attached to the processing unit and extending from the housing a predetermined distance; and a first sensing unit integrated into the probe and in electrical communication with the high frequency oscillator and the first voltage meter; a second sensing unit integrated into the probe relative to the first sensing unit and in electrical communication with the low frequency oscillator and the second voltage meter.

Abstract: Computer-implemented methods, computer program products, and systems are provided for performing Near Field Communication (NFC) communication with a first NFC device that includes a NFC writable component and an operating system that restricts writing to the NFC writable component and allows reading NDEF messages from a source other than the NFC writable component. A method includes receiving, by a remote server, a serial number of the NFC writable component. The method further includes generating, by the remote server, a unique ID based on the serial number. The method also includes storing, by the remote server, the unique ID with a name of the NFC writable component. The method additionally includes preparing and sending, by the remote server, a Near Field Communication Data Exchange Format (NDEF) message to the NFC device that includes the unique ID together with information to be shared with a user of the NFC device.

Abstract: Embodiments described herein include an acoustic telemetry system for use with an apparatus configured to rotate. The acoustic telemetry system includes one or more sensor nodes and at least one receiver node. In at least one embodiment, the telemetry system also includes at least one hub node positioned on the apparatus. Each sensor node is attached to or embedded in the apparatus. Each sensor node obtains data related to one or more operating conditions of the apparatus and the environment surrounding the apparatus. The one or more sensor nodes encode and transmit the data to the hub node or the receiver node using ultrasonic acoustic waves. In at least one embodiment, the hub node transmits the data to the receiver node. The receiver node decodes the data and monitors the one or more operating conditions of the apparatus.

Abstract: A method collects data via a sensor being part of a supply network which distributes a consumable. The sensor contains a measuring element which provides elementary measuring units, which correspond to a variable or a parameter, as raw measurement data, where consumption data are generated from the elementary measuring units. The sensor has a communication device and a storage device. To determine the measurement resolution of the sensor, the conditions for generating time stamps are determined using a correlation model. Time stamps of successive raw measurement data are generated in the sensor based on the correlation model, the time stamps are transmitted via a wired connection and/or via a radio path, with the result that the raw measurement data acquired by the measuring element are reconstructed and evaluated on the basis of the time stamps using the correlation model. The consumption data are transmitted in parallel with the time stamps.

Abstract: Techniques for computing electrical phase of electrical metering devices are described. In an example, data indicating zero-crossing times at first and second metering devices is obtained. A time-difference between the zero-crossing times may be determined. In a first example, the time-difference may be based at least in part on calculations involving a first value of a first free-run timer on a first metering device, a second value of a second free-run timer on a second metering device, and a time of a transmission between the metering devices. In a second example, the time-difference may be based at least in part on calculations involving a start or end time of a time-slot of a spread spectrum radio frequency transmission scheme. A phase difference between the first zero-crossing and the second zero-crossing may be determined, based at least in part on the determined time-difference.

Abstract: Systems and methods for a continuous monitoring of analyte values received from an analyte sensor system are provided. One method for a wireless data communication between an analyte sensor system and a mobile device involves storing identification information associated with a transceiver of the analyte sensor system, the identification information entered by a user of the mobile device via a custom application running on the mobile device; causing the custom application to enter a background mode; searching for advertisement signals; receiving an advertisement signal from the transceiver; authenticating the transceiver based on the identification information; prompting the user to bring the custom application to a foreground mode; causing the custom application to request a confirmation from the user that a data connection with the transceiver is desired; receiving the confirmation from the user; and completing the data connection with the transceiver.