A liquid intrusion detection system includes a controller board, an absorbent material, first electrical contacts, and at least one processor. The controller board is disposed within a housing of an electric power steering unit. The absorbent material is at least partially disposed about a component. The first electrical contacts have first ends disposed on at least one of the controller board and the absorbent material. The at least one processor in communication with the first electrical contacts.

A sensor cable of conductive and non-conductive liquids leaks for example stored in a tank or flowing in a pipe. The cable is composed of a main body and at least one sensor element made of a central wire surrounded by an insulating sheath, itself integrated in an expandable conductive sheath, the wire and the expandable conductive sheath being arranged to contact conductive and non-conductive fluids, the main body being formed by extruding a plastic material and extruded on a central support in the form of either a plastic rod or a metal rod coated with plastic. This can be applied to liquid leakage watch systems.

The present invention relates to a flexible tape (41;50) for use in detecting liquid leaks comprising an elongated substrate (44), having a length (L), a top surface (44a) and a bottom surface (44b), formed from a moisture absorbent material. The flexible tape further comprises at least one non-moisture absorbent electrically insulating material (45.46; 52) disposed on the top surface (44a), and first and second electrical conductors (47,48) spaced via the electrically insulating material (45,46; 52). The invention also relates to a leak detection system (80) and method for detecting a presence of an electrically conductive liquid.

An elongated sensor for detecting the presence of a particular fluid includes first and second conductors, both extending from the proximal end to the distal end of the sensor. The second conductor includes a swellable conductor, at least a portion of the swellable conductor is swollen when in contact with the fluid and its conductance at least 10 times less when the portion is in contact with the fluid than when absent contact with the fluid. The second conductor further includes a subsidiary conductor in direct contact with the swellable conductor. In one embodiment the first conductor is isolated from the second conductor in the inner part of the sensor, and the two conductors are electrically connected at the distal end of the sensor. In another embodiment, the first contactor is in direct contact with the subsidiary conductor within the inner part of the sensor.

An incontinence detection system monitors an area for moisture events and wirelessly transmits moisture-related information to one or more notification devices. The system has a pad that includes a substrate and one or more sensors supported by the substrate. The sensor(s) emit wireless signals indicative of the moisture-related information. A sensor event communication system forwards the sensor signals to another device, such as a notification device. Portions of the system are included in a patient support apparatus, such as a bed.

An incontinence detection system monitors an area for moisture events and wirelessly transmits moisture-related information to one or more notification devices. The system has a pad that includes a substrate and one or more sensors supported by the substrate. The sensor(s) emit wireless signals indicative of the moisture-related information. A sensor event communication system forwards the sensor signals to another device, such as a notification device. Portions of the system are included in a patient support apparatus, such as a bed.

Disclosed is a battery device including a battery; a plurality of sensors attached to the battery; and a transceiving circuit configured to transmit a signal received from a monitoring device to the plurality of sensors and to transmit signals received from the plurality of sensors to the monitoring device. The plurality of sensors generate surface acoustic waves (SAWs) in response to the signal received from the monitoring device, when receiving the signal from the monitoring device through the transceiving circuit, and the plurality of sensors include at least one first sensor configured to output a first signal corresponding to a SAW varied depending on a temperature of the battery; at least one second sensor configured to output a second signal corresponding to a SAW varied depending on pressure of the battery; and at least one third sensor configured to output a third signal corresponding to a SAW varied depending on an electrolyte leakage state of the battery.

A differential pressure monitoring system includes a differential pressure monitoring device and at least one client device. The differential pressure monitoring device includes a water pressure sensor that detects a water pressure at an inlet of the dry pipe valve, a valve air pressure sensor that detects an air pressure at an outlet of the dry pipe valve, and a control circuit that computes a ratio of the water pressure and the air pressure, predicts whether a valve tripping event is expected to occur based on the computed ratio, and in response to predicting that the valve tripping event is expected to occur, provides a prediction that the valve tripping event is expected to occur for remedial action. The system includes at least one client device that receives the prediction from the control circuit and presents display data regarding the prediction.

Provided are techniques for operating a hydrocarbon well system that include installing a wellhead seal assembly at a wellhead of a hydrocarbon well system, conducting pressure testing of a wellhead seal cavity defined by the seal assembly to verify its integrity, disposing a control fluid into the wellhead seal cavity, conducting baseline ultrasonic imaging of the wellhead seal cavity to generate a baseline ultrasonic image that depicts a signature of the control fluid disposed in the wellhead seal cavity at a first point in time, conducting updated ultrasonic imaging of the wellhead seal cavity to generate an updated ultrasonic image that depicts a signature of substances disposed in the wellhead seal cavity at a second point in time, comparing the updated ultrasonic image to the baseline ultrasonic image to determine whether the integrity of the wellhead seal cavity has been compromised.

Embodiments of the present disclosure provide an apparatus for determining oil leakage of a gearbox and an associated robot. The apparatus comprises a swellable ring arranged surrounding an output shaft of a motor coupled to the gearbox, the swellable ring, when contacting oil, swells to apply a radial force to the output shaft; and a controller configured to detect the oil leakage by detecting at least one of the following caused by the applied radial force: a torque change on the output shaft, or a change in a current for driving the motor. With the apparatus, before oil leaks into the motor, the user already knows or the motor has already been stopped. In this case, the robot using the apparatus can be operated more safely.