Abstract: An oil level measurement system for an aircraft engine includes a magnetic float disposed in the aircraft engine, a first sensor ladder configured for sensing a position of the magnetic float, and a second sensor ladder configured for sensing a position of the magnetic float. A controller is configured to determine an oil level of an engine based on an engine status signal, a first signal from the first sensor ladder, and a second signal from the second sensor ladder. An oil level sensing method for measuring an oil level within an aircraft engine when the aircraft engine is off includes comparing a first signal from a first sensor ladder with a second signal from a second sensor ladder, indicating a fault when the first signal is different from the second signal, and determining an oil level of an aircraft engine when the first signal matches the second signal.

Abstract: An agricultural system with an agricultural harvester has a terahertz sensor. The terahertz sensor includes at least one a terahertz source disposed to direct electromagnetic radiation toward a harvest material of the agricultural harvester. A terahertz detector is disposed to detect the terahertz electromagnetic radiation after the terahertz electromagnetic radiation interacts with the harvest material. A controller is operably coupled to the terahertz detector and is configured to detect a harvest-related parameter based on a signal from the terahertz detector and to perform an action based on a detected parameter.

Abstract: A method for stabilizing a magnetic field of an inertial measurement unit (IMU), is provided that includes initializing accelerometer and gyroscope (AG) heading data for the IMU and initializing accelerometer, gyroscope and magnetometer (AGM) heading data for the IMU. Determining whether a tracking state exists and completing processing of the AG heading data and the AGM heading data if the tracking state does not exist. Calculating a magnetic field error if the tracking state exists.

Abstract: An inertial sensor and a method therefor. The inertial sensor includes: a first substrate; a medium layer stacked on the first substrate; a first electric-conductive layer stacked on the medium layer, first openings being formed in the first electric-conductive layer and spaced from one another; second electric-conductive layers being bonded to the first electric-conductive layer through bonding structures, a gap being formed between adjacent second electric-conductive layers, which are connected to each other by a connection part, and second openings being formed in each of the second electric-conductive layers and spaced from one another; and a second substrate covering the first substrate, a closed space being formed between the second substrate and the first substrate. Compared with a traditional single-layer structure, the die size is reduced, the manufacturing cost is reduced, and the integration of device into portable consumer applications is improved, and XY axis sensitivity is improved.

Abstract: In order to provide an elemental analysis device that includes an electrode having a housing recess where a crucible is housed during an elemental analysis, and that is capable of making only the part of a consumed electrode tip replaceable, an elemental analysis device including a first electrode and a second electrode between which a crucible MP containing a sample is nipped, and that heats the sample by applying a current between the first electrode and the second electrode, the first electrode includes: a first electrode main body that is provided with a housing recess where the crucible MP is housed; and a first electrode tip that is provided removably to the first electrode main body in such a manner that a part thereof is exposed inside the housing recess.

Abstract: The present invention provides a multimass MEMS gyroscope featuring an orthogonal arrangement, which comprises an anchor point unit, a sensing unit and a driving unit; the anchor point unit comprises a central anchor point subunit located at the center of a rectangle and four corner anchor points located at the four corners of the rectangle respectively; the sensing unit comprises four detection mass blocks each of which has a frame structure and is elastically connected between the central anchor point subunit and the corresponding corner anchor point, receding spaces being formed between the detection mass blocks, and four detection decoupling parts; and the driving unit comprises four driving mass blocks, and driving decoupling parts. The gyroscope can improve the arrangement area of transducers and reduce the mass of the detection mass blocks to improve the Coriolis gain, thereby improving the mechanical sensitivity of the gyroscope.

Abstract: A test method, a test apparatus, a test system, and a storage medium are provided, so as to solve the technical problem of how the leakage of a battery cell is detected. The test method of this embodiment of this application includes: (S10) obtaining a CAN signal output by a gas sensor, where the gas sensor is disposed on a test box, and a battery cell is placed in the test box; (S20) determining a gas concentration of a predetermined gas in the test box based on the CAN signal; and (S30) sending a concentration exceedance signal when the gas concentration is higher than a concentration threshold.

Abstract: Methods and systems are described herein for early detection of scaling during processing of liquid solutions. Particularly, the methods and systems described herein provide detection of the onset of scalant crystallization, so that measures can be deployed in a way that avoids significant scaling of membranes or other separating elements.

Abstract: An apparatus (14) for handling and/or measuring a liquid contained in a container (10) includes an elongate component (18) having a free end (20) and being insertable through a container opening (12) of the container (10) into the interior (22) of the container (10) with said free end (20) first and at least a part of an empty level indicator system (28, 30, 32) at the free end (20) of the elongate component (18). A transponder (28) for an RF-detection system (28, 30) of the empty level indicator system (28, 30, 32) is included for detecting an empty level of a liquid in at least one container (10).

Abstract: A vibratory gyroscope sensor is provided. The vibratory gyroscope sensor consists of a base, and a resonator that includes a central foot attached to the base and a sidewall that rises from the foot up to a free end edge delimiting an opening. The sidewall has a proximal portion that extends from and around the foot and a cylindrical distal portion that extends in line with the proximal portion up to the free edge with the proximal portion progressively widening from the foot towards the distal portion.

Abstract: A calibration system and methods for flow metering technologies integrates a known primary reference standard (e.g., a gravimetric scale), configured to determine a mass of calibration fluid, in parallel with surrogate secondary masters (e.g., Coriolis effect flowmeters) connected via an adjustable flowpath having a closed loop mode, including a meter bank, a pump and a measuring section, and an open loop mode, including a reservoir, the meter bank, the pump, the measuring section and the primary reference standard, which enables calibration duality and redundant meter under test confirmation of calibration factors. The disclosed systems and methods enable life cycle assurance of the primary reference standard and the secondary masters' standard reliability and reproducibility over time and, as a redundant system, enable calibration of multiple flow metering technologies, such as, for example, volumetric, mass, density, viscosity and Reynolds number-reliant technologies, in one homogenous system.

Abstract: A method for replacing a first sensor with a second sensor in a field device system configured to determine a process variable, each of the first and second sensor provided with near field communication, NFC, functionality, the method includes: connecting the second sensor to an initiation device and initiating the second sensor based on information uniquely identifying the first sensor; disconnecting the second sensor from the initiation device; placing the second sensor in the vicinity of the first sensor; with the first sensor connected to a power source and the second sensor not connected to a power source, communicatively connecting the sensors via NFC and transferring settings from the first to the second sensor; replacing the first sensor with the second sensor; connecting the first sensor to the initiation device; and transferring a verification from the first sensor to the initiation device confirming that the transfer of settings was completed.

Abstract: A solid mount resonator sensor has a substrate. An anti-reflector stack is disposed proximate the substrate. The anti-reflector stack includes one or more acoustic interference layers. A first electrode is disposed proximate the anti-reflector stack. A second electrode having a first surface facing towards the first electrode and an opposing second surface facing away from the first electrode. A substantially quarter-wave piezoelectric material layer is disposed between the first and second electrodes.

Abstract: A device and method for leakage detecting of a crude oil tank floor are provided. The device comprises a control system, a detection robot and a plurality of acoustic signal receivers. The acoustic signal receivers and the control system are all arranged outside a crude oil tank. The acoustic signal receivers are all connected with the control system. When the crude oil tank is detected, the detection robot is arranged in the crude oil tank. The detection robot comprises a moving mechanism, a positioning sonar and an array leakage detection sensor. The positioning sonar and the array leakage detection sensor are both arranged on the moving mechanism. The acoustic signal receivers are used for receiving sonar signals sent by the positioning sonar. The array leakage detection sensor is used for detecting a leakage point of the crude oil tank.

Abstract: A method for detecting a stress state-of rocks surrounding a roadway based on three-dimensional electric potential response is disclosed. By collecting electric potential data, and performing spatial interpolation on all the electric potential measurement points to obtain a three-dimensional electric potential imaging volume, three-dimensional electric potentials can be used to draw electric potential isosurface models. By using a radial basis function surface interpolation method to draw a three-dimensional abnormal electric potential inversion probability isosurface model, it is possible to intuitively visualize electric potential distribution spatial characteristics of rocks surrounding a roadway, so as to clearly display a spatial range, direction and development trend of abnormal stress zones, and accurately identify and determine the stress states of roadway rock formations.

Abstract: Disclosed herein is a device for measuring physicochemical properties with regard to gases in contact with a material, especially material transport properties with regard to gases in contact with a material and mechanical properties, comprising: an upper end, in which a pressure sensor connected to an apparatus for recording and optionally processing a signal is hermetically inserted; a lower end in communication with the pressure sensor and which is open in order to allow (i) insertion of the measuring device into the material and (ii) formation of a gaseous chamber between the pressure sensor and the material when the measuring device is inserted therein; a system for scavenging a gas; at least one means for introducing the gas into the device, and advantageously at least one means for removing the gas from the device; the device made from a material which does not absorb the gas.

Abstract: A terahertz frequency-based sensing system for an agricultural harvester is provided. The system includes a terahertz sensor mounted to the agricultural harvester. The terahertz sensor at least one a terahertz source disposed to direct electromagnetic radiation toward a harvest material of the agricultural harvester. At least one terahertz detector is disposed to detect the terahertz electromagnetic radiation after the terahertz electromagnetic radiation interacts with the harvest material. A controller is operably coupled to the at least one terahertz detector and is configured to detect at least one harvest-related parameter based on a signal from the at least one terahertz detector and to perform an action based on the at least one detected parameter.

Abstract: A testing device and method used on pressure relief valve while installed on an inland cargo barge to open the pressure relief valve and to determine its set lift pressure. Use of the testing device does not require the testing to be performed at a shipyard. The testing device includes a lift unit that mounts to the top of the valve's spring housing and engages the valve stem. Hydraulic pressure applied to pistons on the lift device moves the valve stem. Proper separation of plates on the lift unit indicates proper opening of the valve. The pressure reading for the applied hydraulic pressure is then correlated to the lift pressure set for the valve under test.

Abstract: A MEMS device and a method for manufacturing the MEMS device are provided. The MEMS device includes a cap sheet and a device sheet. The device sheet includes a silicon substrate, at least two device structure layers, and at least one conductive structure layer, and each two adjacent device structure layers are coupled via a corresponding conductive structure layer. The device sheet defines a functional cavity having a first region, a second region, and a third region. The at least two device structure layers and the at least one conductive structure layer each are across the first region, the second region, and the third region, and the at least two device structure layers and the at least one conductive structure layer cooperatively form a first movable structure in the first region, define an anchor point in the second region, and form a second movable structure in the third region.

Abstract: In one embodiment, a system, comprising: one or more processors; and a memory comprising instructions, wherein the one or more processors are configured by the instructions to: receive first electromagnetic data at a plurality of frequencies; process the first electromagnetic data; and generate prediction parameters by passing the processed first electromagnetic data through a neural network trained on data corresponding to a synthetic training set, the prediction parameters corresponding to a container and contents located within the container.