Abstract: Novel integrated circuit environmental and temperature sensors in combination with measurement circuitry fully integrated as part of an ASIC die, which may be co-packaged with a pressure sensor integrated circuit to create a compact yet sensitive environment monitoring product. Embodiments may include one or more integrated local heating elements and control circuitry that are power supply independent, make efficient use of battery power, include an accurate in-built temperature detection capability, and provide digital close-loop control of the heating elements.

Abstract: Described embodiments provide a flat conductive fluid sensor cable capable of manufacture in long lengths comprising a flexible substrate, two or more flat conductors, and a fluid-permeable cover material arranged to allow a conductive fluid to form an electrically conductive path between the two or more conductors when conductive fluid contacts the conductive fluid sensor cable.

Abstract: The present disclosure relates to a novel personal sampler for bioaerosols and the method of making and using the personal sampler.

Abstract: The invention relates to a monitoring system (SY1) for monitoring an engine (6) comprising: a sensor unit (U1) connected via an inlet line (12) to an oil circuit (C1) of the engine, the sensor unit comprising one or more sensors (SN) for measuring first parameters representative of the quality of an oil (OL) taken from the oil circuit; an analysis unit (U2) for establishing, based on the first parameters (PR1) or second parameters (PR2) obtained from the first parameters, whether at least one predefined condition (CN) is met, by comparing the first or second parameters with at least one threshold value; and a detection unit (U3) configured to detect a deterioration (EVT) of the quality of the oil representative of an abnormal state of the engine, if at least one predefined condition (CN) is met. The invention also relates to a corresponding method.

Abstract: Example systems, apparatuses, and methods are disclosed sensing a flow of fluid using a thermopile-based flow sensing device. An example apparatus includes a flow sensing device comprising a heating structure having a centerline. The flow sensing device may further comprise a thermopile. At least a portion of the thermopile may be disposed over the heating structure. The thermopile may comprise a first thermocouple having a first thermocouple junction disposed upstream of the centerline of the heating structure. The thermopile may further comprise a second thermocouple having a second thermocouple junction disposed downstream of the centerline of the heating structure.

Abstract: An exemplary microelectromechanical device includes a MEMS layer, portions of which respond to an external force in order to measure the external force. A substrate layer is located below the MEMS layer and an anchor couples the substrate layer and MEMS layer to each other. A plurality of temperature sensors are located within the substrate layer to identify a temperature gradient being experienced by the MEMS device. Compensation is performed or operations of the MEMS device are modified based on temperature gradient.

Abstract: Deformable sensors and methods for modifying membrane stiffness through magnetic attraction are provided. A deformable sensor may include a membrane coupled to a housing to form a sensor cavity. The deformable sensor may further include magnetically-attractable particles located on or within the membrane. The deformable sensor may additionally include a magnetic object located at a base within the sensor cavity. The magnetic object may be configured to modifiably attract the magnetically-attractable particles and modify stiffness of the deformable sensor by modifying air pressure within the sensor cavity, based on modifiable strength of the magnetic object to attract the magnetically-attractable particles.

Abstract: Methods for testing the integrity of a containment sump in contact with a matrix with a testing apparatus are provided. The testing apparatus may include an underground fixture positioned in contact the matrix, a test chamber, a conduit structure providing fluid communication between the underground fixture and the test chamber, and a pressure source for exerting a pressure that is communicated to the underground fixture via the conduit structure. In some embodiments, a method may include: releasing a test media into the containment sump; generating a negative pressure within the testing apparatus for a time period; and testing for the presence of test media within the testing apparatus. In other embodiments, a method may include: releasing a test media into the testing apparatus; generating a positive pressure within the testing apparatus for a time period; and testing for the presence of test media within the containment sump.

Abstract: Liquid sampling apparatus and methods enable hands free collection of samples from surface waters via drone or other remote delivery systems. The liquid sampling apparatus includes a frame configured to support a plurality of groundwater sampling bailers in circumferential spaced apart relationship around a central axis of the frame, each bailer comprising an elongate tubular housing configured to collect and store a liquid sample from a body of liquid. A weight is movably secured to the frame and is configured to move between a retracted position and a downwardly extended position. When in the downwardly extended position, the weight is configured to maintain the liquid sampling apparatus and the plurality of groundwater sampling bailers in a generally vertical orientation during liquid sample collection.

Abstract: A gas sensor array comprises a plurality of metal decorated metal oxide film based on three-dimensional nanostructured templates, each including a porous anodized aluminum oxide (AAO) template and a plurality of metal decorated metal oxide films. The porous AAO substrate has a top surface with top gold electrodes, a bottom surface with bottom gold electrodes and a plurality of pores. Each pore has an interior wall and two openings located on the top surface and the bottom surface respectively for allowing air to enter into the pore. Each metal-decorated metal oxide film comprises a metal oxide film and metal decoration particles. The metal oxide film has an internal surface attaching on a respective interior wall and an external surf-ace being decorated with the metal particles. Each decoration metal is different to provide different sensitivities in response to an environmental gas.

Abstract: A device which: optically detects the presence of, measures the flow rate of, and identifies the characteristics of venting fugitive gas emissions. Specifically the device provides a spectral analysis of emission gas constituents; selective detection of the presence of venting hydrocarbons; measurement of venting emissions flow rates, the measurement of shut-in and flowing venting system pressures and the venting system temperatures. The flow rates are corrected, relative to the detection of the gas constituents and standard temperature and pressure (STP). These devices are configured to collect such data electronically and transmit via various telemetry systems, to a secure remote data network for reporting, access, evaluation, real-time monitoring and archiving as required.

Abstract: The present application discloses a pipeline radar and television inspection robot which includes a robot body, a directional drilling lifting device, a directional drilling rotary device, a directional drilling swing device, a radar, cameras and a driving apparatus; wherein the directional drilling lifting device is on a front part of the robot body; the directional drilling rotary device is on the directional drilling lifting device; the directional drilling swing device is on the directional drilling rotary device; the radar and the cameras are on the directional drilling swing device; the driving apparatus are on a bottom of the robot body. The directional drilling lifting device, the radar and the cameras are plugged in the robot body. The robot body electrically connects to cables which electrically connect to a control system. The cameras and the radar are able to be adjusted and the components are connected as modules.

Abstract: An accelerometer arrangement and method are described for determining accelerations of an inground tool. First and second triaxial accelerometers are supported such that a normal sensing axis of the first triaxial accelerometer is at least generally orthogonal to the normal sensing axis of the second triaxial accelerometer for determining the accelerations along the three orthogonal axes based on a combination of sensing axis outputs from one or both of the triaxial accelerometers. A weaker sensing axis of one triaxial accelerometer can be supported at least approximately normal to a weaker sensing axis of another triaxial accelerometer such that the weaker axes are not used. The triaxial accelerometers can be supported such that one axis of one accelerometer can be redundant with respect to another axis of another accelerometer. One triaxial accelerometer can be mounted on a tilted plane with respect to another triaxial accelerometer.

Abstract: A sensor device includes a mounting member having fixation surfaces inside, and at least one electronic component directly or indirectly fixed to the fixation surfaces of the mounting member, and the mounting member constitutes a part of a casing for housing the electronic component. Further, the fixation surfaces are perpendicular to each other.

Abstract: A device for monitoring evaporation capacity of a water surface evaporator in a process includes a water surface evaporator and a rain collector, the rain collector and the water surface evaporator having a same size of orifice area, height, and contour profile of a monitoring device. One side of the water surface evaporator is connected with a first measuring well through a pipeline, and another side of the water surface evaporator is connected with a first electromagnetic flowmeter, a water supplementing electromagnetic valve and an overflow electromagnetic valve through a water pipe. The water supplementing electromagnetic valve is connected with a water supplementing barrel through a water supplementing pipe. A water collecting barrel is installed below the special rain collector. A second magnetostrictive water level meter, a starting drainage switch and a stopping drainage switch are installed in the second measuring well.

Abstract: A system for determining a fluid level includes a front end and a measurement probe. The measurement probe receives a pulse from the front end and returns a partially reflected pulse and a fully reflected pulse to the front end. The partially reflected pulse is evaluated to determine a liquid level within a tank that includes the measurement probe. The measurement probe includes a conductive trace configuration to provide a time delay to prevent pulse build up.

Abstract: A system and method for measuring an inside diameter of a pipe to determine if it exceeds a predetermined value using a plurality of fingers operatively connected to a spring. When in a fully extended position, the distance between opposite fingers is the predetermined value. The fingers are pivotable between a starting position, through the fully extended position, and to a failing position. In the starting position, an outer end of each finger engages an inside surface of the pipe to compress the spring. If the diameter exceeds the predetermined value as the system moves through the pipe, the pipe inside surface will no longer engage the fingers, which releases the spring causing the fingers to pivot to the failing position, where they remain until the system is removed from the pipe and manually reset.

Abstract: A breath testing apparatus is provided to test hydrogen sulfide and other parameters in exhaled breath of a patient. A patient sample input for receiving exhaled breath from a patient is provided, in addition to an atmospheric input for receiving atmospheric air. A valve is coupled to said patient sample input and said atmospheric input, and first and second pathways are provided from said valve to a hydrogen sulfide sensor block and a second sensor block.

Abstract: A differential MEMS pressure sensor includes a topping wafer with a top side and a bottom side, a diaphragm wafer having a top side connected to the bottom side of the topping wafer and a bottom side, and a backing wafer having a top side connected to the bottom side of the diaphragm wafer and a bottom side. The topping wafer includes a first cavity formed in the bottom side of the topping wafer. The diaphragm wafer includes a diaphragm, a second cavity formed in the bottom side of the diaphragm wafer underneath the diaphragm, an outer portion surrounding the diaphragm, and a trench formed in the top side of the diaphragm wafer and positioned in the outer portion surrounding the diaphragm.

Abstract: A system includes a conduit, a sensor system and a controller. The conduit may be associated with a structure, having a portion thereof disposed on a surface, and being disposed in a direction normal to the surface. The controller is in communication with the sensor component. When the sensor system is operable to detect when sediment on the surface and surrounding the structure is removed from an area around the structure, an initial length, li, of the conduit is disposed below the surface of the sediment on the surface and surrounding the structure at an initial time. When the sensor system is operable to detect when sediment is deposited around the structure, the initial length, li, of the conduit is disposed above the surface at the initial time.