Abstract: A non-destructive testing system can include a mobile computing device and a video borescope coupled to the mobile computing device via a cloud computing environment. The system can further include a probe driver coupled to the mobile computing device and to the video borescope via the cloud computing environment. The probe driver can attach to a conduit section. The probe driver can also include a positioning element configured to position the conduit section and a data processor. The data processor can be configured to receive a signal indicative of a position of the conduit section and to control one or more operations of the probe driver configured to operate the positioning element to orient the conduit section in the position.

Abstract: A pressure sensor includes an input terminal configured to receive an electrical input signal and an output terminal configured to provide an electrical output signal in response to the electrical input signal. The pressure sensor also includes an acousto-mechanical diaphragm and an electrically conductive element formed on the acousto-mechanical diaphragm. The pressure sensor further includes a distributed element filter configured to capacitively couple the input terminal to the output terminal. The distributed element filter is spaced from the electrically conductive element by an air gap. The air gap changes in response to a deflection of the acousto-mechanical diaphragm caused by a change in pressure on the acousto-mechanical diaphragm.

Abstract: A method of determining absolute permeability in carbonates without upscaling computations includes performing a nuclear magnetic resonance (NMR) analysis and a mercury-injection capillary-pressure (MICP) analysis on at least three samples from carbonate rock of a set of representative regions to determine an experimental permeability, where each of the representative regions have properties related to the porosity and pore-throat size of the carbonate rock. A series of low resolution X-ray scans and a series of high resolution X-ray scans are performed on the same three samples of the carbonate rock of the set of representative regions. Permeability simulations are performed on the same three samples of the carbonate rock of the set of representative regions to determine a computed permeability. The experimental permeability and the computed permeability are then compared to provide computationally manageable and reasonable estimates of the absolute permeability of the carbonate rock.

Abstract: A sensor apparatus includes: a sensor that includes a resistor bridge circuit; a temperature detection circuit that provides a first path and a second path; a voltage measurement portion that measures a voltage of each of the differential output terminals; a controller that causes the voltage measurement portion to measure the voltage of each of the two differential output terminals; and a calculator that calculates a difference between the voltages of the two differential output terminals to acquire temperature information of the sensor.

Abstract: An in-situ hydraulic jet exploiting device and method of a low-permeability natural gas hydrate reservoir. The device includes a high-pressure reaction kettle configured for formation, fracturing and exploiting of a hydrate, a stable-pressure gas supply module configured to adjust and control a gas flow rate, a constant-speed constant-pressure liquid supply module configured to control a liquid flow rate or keep liquid injection pressure constant, a thermostatic water bath configured to provide a constant-temperature environment for a device system, a back-pressure module configured to automatically control an exploiting rate or exploiting pressure, an in-situ hydraulic jet permeability enhancement module, a data collection and processing module configured to collect and process basic system parameters, and a pipeline connecting various components.

Abstract: A water leak detection system including a leak detector and a wall bracket with an integral or removable remote probe that can be positioned remotely from the leak detector. The leak detector is configured to electrically couple with the remote probe when mechanically coupled with the wall bracket, requiring no further user interaction to activate the probe. The wall bracket can include multiple remote probes that each electrically couple with the leak detector when the leak detector is mechanically coupled to the wall bracket, any one of the remote probes capable of triggering the leak detector when a leak occurs.

Abstract: An experiment system and transparent experiment method for replicating fluid displacement in a pore structure of a natural rock mass are provided. The natural pore structure is extracted and a digital porous model corresponding to the natural rock mass is reconstructed with the image processing method. Based on the digital porous model, a three-dimensional pore structure model with a transparent and visible internal structure is printed by a 3D printing device, such that the pore space inside the three-dimensional pore structure model is visible. In this way, the whole fluid flow during the displacement-seepage process within the natural rock mass can be replicated and visually observed from the outside when performing the displacement-seepage experiment. Further, temperature, flow rate, and pressure can be accurately controlled, to replicate various experiment conditions, so as to perform quantitative analysis on distribution features of a seepage field and a fluid speed field.

Abstract: A method of reducing power consumption in portable devices includes providing a sensor producing a sensing signal indicative of sensed entity and powering the sensor. Powering the sensor includes providing a first power value for a first time interval, providing a second power value for a second time interval, the second power value being different from the first power value, and discontinuing powering for a third time interval.

Abstract: A motor control apparatus includes: an excitation unit configured to excite a plurality of excitation phases of a motor; a measurement unit configured to measure a physical amount that changes according to an inductance of at least one of a plurality of coils that make up the plurality of excitation phases, when each of the plurality of excitation phases is excited; and a determination unit configured to determine a type of the motor based on measurement values of the physical amount measured by the measurement unit when each of the plurality of excitation phases is excited.

Abstract: An evaluation method for hydrogen-bearing components, porosity and pore size distribution of organic-rich shale is provided, relating to a technical field of oil and gas development. The evaluation method includes steps of: according to differences among NMR (nuclear magnetic resonance) T1-T2 maps of kerogen, oil-adsorbed kerogen, clay minerals of different water-containing conditions, shale, dry shale sample, oil-saturated shale sample and water-saturated shale sample, establishing a classification scheme for each hydrogen-bearing component and a quantitative characterization method for fluid components of the organic-rich shale; with a T2 distribution of the organic-rich shale after being saturated with oil as a target and a T2 distribution of the dry shale sample as a basement, subtracting the basement, and obtaining a T2 distribution of oil in pores; and based on the T2 distribution of oil in the pores, evaluating the porosity and the pore size distribution of the organic-rich shale.

Abstract: Methods and systems for detecting leakage in a permeability measurement system. The method includes connecting a plurality of flow lines to a first dimension of a core sample assembly, connecting one or more flow lines to a second dimension of the core sample assembly, placing the core sample assembly with the connections in a measurement cell such that the flow lines are accessible from outside of the measurement cell, connecting one or more gas sensors to one end of each of the flow lines, connecting an inlet of the measurement cell to a gas tank, setting fluid pressure inside the measurement cell to a predetermined value, and detecting a leakage in the core sample assembly by the one or more gas sensors coupled to the flow lines.

Abstract: A sheet-member guide structure includes a first guide member that guides a sheet member from a fixing unit to a transport roller unit, the fixing unit fixing an image formed on the sheet member to the sheet member by heating the sheet member that is transported, the transport roller unit transporting the sheet member; and a second guide member that comes into contact with the sheet member to which the image has been fixed by the fixing unit and guides the sheet member to the transport roller unit, the second guide member being disposed downstream of the first guide member in a transporting direction in which the sheet member is transported and being made of a material having a thermal conductivity higher than a thermal conductivity of a material of the first guide member.

Abstract: A sheet correcting device includes a plurality of curved surface members including curved surfaces, respectively, to deform a sheet along the curved surfaces, the plurality of curved surface members disposed along a conveyance direction of the sheet, a plurality of pressing members disposed facing the curved surfaces of the plurality of curved surface members, respectively, to press the sheet against the curved surfaces of the plurality of curved surface members, respectively, a sheet tensioner to apply tension to the sheet, and a heater to heat the sheet that is bent by the curved surfaces of the plurality of curved surface members.

Abstract: There is a need to provide an image generator and an image generation method capable of avoiding wasting a normal printed matter if any in sheets of paper output after an occurrence of waste paper. When paper contains an abnormal image, the paper is detected as waste paper based on a read result from an image read sensor. Detection of the waste paper allows an image generator to perform reprint from a print job for the waste paper. Normal-image paper may be contained in sheets of paper output between detection of the waste paper and the reprint to be performed. In this case, the normal-image paper is used as a normal printed matter and is avoided from being consumed wastefully.

Abstract: The invention relates to a pressure sensor (10) comprising a cavity (12) containing a liquid, said cavity (12) being closed at a first end by a first diaphragm (20a) and at a second end by a second diaphragm (20b), and a measuring body (30) which comprises a strain gauge (31) positioned inside said cavity (12), characterized in that the measuring body (30) is mechanically connected only to one diaphragm among the first diaphragm (20a) and the second diaphragm (20b) by a connection member (50), the measuring body (30) comprising a shape having central symmetry and the connection member (50) being fastened to the center of symmetry of said measuring body (30).

Abstract: A rising main pipeline assessment system and method. An analysis system obtains data recorded on the pipeline and generates a steady state hydraulic model for the pipeline which defines expected performance zones under normal operating conditions and zone boundaries delineating normal and abnormal operating conditions. Model data is recorded in a data repository of the processing hub. A monitoring system includes a pipeline-connectable pressure transducer configured to obtain measurements during operation of the pipeline and generate, for each of a plurality of predetermined time periods, a data record including minimum, maximum and mean measurements. The data record is communicated to a processing hub which is configured to classify each received data record measurement according to its measurements and the performance zones of the model.

Abstract: A system and method of detecting gas leakage along an underground pipeline system accurately determines the presence of a gas leak while minimizing cost and preserving energy. The system includes at least one underground pipeline with a plurality of stack vents, a plurality of sensor units, and at least one remote server. Each sensor unit is mounted within a stack vent. The method begins by tracking a current time with each sensor unit. A gas-concentration reading with at least one specific unit is captured and then communicated along with a sensor location and a sensor identification to the remote server and recorded with the remote server. The tracking, capturing, and communicating of the gas-concentration reading is repeated so that actual gas-concentration data is compiled and compared to a baseline gas-concentration data or a defined gas-concentration threshold. A leak notification for a gas leak is then sent with the remote server.

Abstract: There is described a pipe apparatus having two circular coaxial layers, inner and outer, defining an annular gap therebetween. At least one segmentation ring with a predesigned opening is placed within the annular gap. The pipe system is composed of interconnected pipe apparatuses of the same type. Compact wireless stations are embedded in the segmentation rings within sealed predesigned openings forming a wireless information and communication network (WICN). Each segmentation ring incorporates a pressure relief mechanism. When a layer of a given pipe apparatus breaks and fluid leaks into the annular gap in a given segment, the segmentation rings surrounding that segment temporarily retain the fluid and the WICN is disturbed in the affected area. At least one external central unit monitors WICN activity and integrity inside the pipe system and detects such leakage, before the leak spreads to another segment of the pipe system, without reaching the outside environment.

Abstract: A sensor includes a substrate, an oxide layer, a membrane, an electrode, and a trench. The oxide layer is disposed on the substrate. The membrane is positioned on the oxide layer. The membrane with the oxide layer and the substrate forms an enclosed cavity therein. The membrane comprises a rigid portion and a deformable portion wherein the deformable portion of the membrane deforms responsive to stimuli. The oxide layer forms side walls of the cavity. The electrode is positioned on the substrate and within the cavity. The trench is formed in the oxide layer, and wherein the trench is covered with barrier material.

Abstract: The present disclosure belongs to the field of municipal engineering and urban water supply network, and provides an efficient method for localizing leaks in a districted metering area (DMA) of water supply pipe networks based on valve operations and online water metering, which is implemented in multiple stages to gradually reduce the leaking area. At each stage, the DMA is firstly decomposed into two sub-areas using an optimized valve operation strategy determined by a minimized objective function, wherein a graph theory-based method is used for the solution. Then the sub-areas containing leaks are identified through online water balance analysis based on smart demand meters, thereby reducing the leaking area. The minimum leaking area is identified with the least number of valve operations. Compared with the traditional methods, the method of the present disclosure can obviously improve the efficiency and accuracy of leak localization and is easy to implement.