An apparatus for monitoring of a pump includes a control module, and an error detection unit, wherein a support vector machine based module is provided that receives an estimated output quantity data value from the control module, processes the estimated output quantity data value to provide a processed estimated output quantity data value via the support vector machine, and supplies the processed estimated output quantity data value to the error detection unit instead of the estimated output quantity data value of the control module.

A pump arrangement for conveying a liquid, in particular for conveying waste water or service water, includes a pump housing and an impeller rotatably arranged in the pump housing about a rotation axis for conveying the liquid. At least one sensor, in particular a 3D sensor, is present for detecting a surface of the impeller to sense an extent of build-up on the impeller. The at least one sensor is arranged on and/or in the pump housing.

A system for detecting dry running of a pump includes an inlet device to an intake device of the pump for taking in an electrically conductive liquid, and an electrical resistance structure (20) arranged in the inlet device. The electrical resistance structure has a variable resistance value, dependent on wetting with the electrically conductive liquid.

A method and controller for controlling electrical activation of elements in a system. A method includes identifying (710) a first element (102) of a system (100) by a control system (600), among a plurality of elements (102, 110, 122) of the system (100), that is to be powered. The method includes determining (712) connected elements (110, 122) of the system (100) by the control system (600). The connected elements (110, 122) are connected to deliver power to the first element (102) directly or indirectly, based on an adjacency matrix (400), and the adjacency matrix (400) identifies connections between each of plurality of elements of the system (100). The method includes identifying (714) at least one of the connected elements (110, 122) to activate by the control system (600), based on the adjacency matrix (400), a health table (500), and the connected elements (110, 122), to deliver power to the first element (102). The method includes activating (716) the at least one of the connected elements (110, 122) by the control system (600), thereby delivering power to the first element (102).

A circulation pump assembly (22) includes an electrical drive motor (10) and an electronic control device (12) controlling the drive motor (10). The control device (12) is configured for the speed control of the drive motor (10) according to a control schema (I, II, III). The control device (12) includes a detection function (42) which is configured to detect a condition variable representing an operating condition, from a parallel flow path (16, 18, 20) with a second circulation pump assembly (22). The control device (12) is also configured such that it can change the control schema (I, II, III) on the basis of a condition variable detected by the detection function (42). Further an arrangement of at least two such circulation pump assemblies (22) and a method for the control of such two circulation pump assemblies (22) are provided.

A pump system comprises a bilge pump powered by an electric motor and a controller controlling the electric motor. The controller is configured to determine if the pump system is malfunctioning. In response to determining that the pump system is malfunctioning, the controller is configured to control the electric motor according to a predetermined routine configured to rectify the malfunction. A pump system comprises a first bilge pump including a first electric motor configured to power the first bilge pump and a first controller controlling the first electric motor and a second bilge pump including a second electric motor configured to power the second bilge pump and a second controller controlling the second electric motor. The first and second controllers are in signal communication with one another.

According to the disclosure, a pump unit includes a vibration sensor or a noise sensor, and a controller may control a driving operation of a pump driving unit on the basis of vibration data or noise data. Furthermore, in case that pump driving units are provided, control is performed to adjust a fault threshold value in consideration of influence of vibration or noise therebetween, and thus the reliability of detection or diagnosis of a fault of a pump can be improved, and the safety of an operator can be promoted.

A pump system comprises a bilge pump powered by an electric motor and a controller controlling the electric motor. The controller is configured to determine if the pump system is malfunctioning. In response to determining that the pump system is malfunctioning, the controller is configured to control the electric motor according to a predetermined routine configured to rectify the malfunction. A pump system comprises a first bilge pump including a first electric motor configured to power the first bilge pump and a first controller controlling the first electric motor and a second bilge pump including a second electric motor configured to power the second bilge pump and a second controller controlling the second electric motor. The first and second controllers are in signal communication with one another.

One aspect of the invention provides a system including: a liquid filter configured for fluidic communication with a fluid repository; a flow sensor in fluidic communication with the liquid filter; a variable-speed pump in fluidic communication with the liquid filter and the flow sensor; and a processor in electronic communication with the flow sensor and the variable-speed pump. The processor is configured to: activate the flow pump at a specified flow rate; monitor a positioning of the flow sensor during the specified flow rate; and determine a performance status of the system from the flow sensor positioning.

A sensor includes a radio frequency interrogator, a responsive patch, a radio frequency resonance detector, and a transmission line. The radio frequency interrogator is configured to produce an electromagnetic interrogation pulse having a first frequency. The responsive patch includes a substrate and a resonant layer disposed on a surface of the substrate. The substrate includes a polymer. The resonant layer includes an electrically conductive nanomaterial. The resonant layer is configured to resonate at the first frequency in response to receiving the electromagnetic interrogation pulse. The radio frequency resonance detector is configured to detect a resonating response of the responsive patch. The transmission line couples the responsive patch to the radio frequency resonance detector. The transmission line is configured to transmit the resonating response of the responsive patch to the radio frequency resonance detector.