Abstract: A subsea communication adapter for providing communication between a first subsea unit including a communication interface operating according to a first communication method and a second subsea unit including a communication interface operating according to a second communication method is provided. The subsea communication adapter includes a first communication interface operating according to the first communication method and a second communication interface operating according to the second communication method. A conversion unit is configured to convert between the first communication method and the second communication method. The conversion includes at least a conversion between a first communication protocol of the first communication method and a second communication protocol of the second communication method.

Abstract: A method and system for monitoring the quality of fluids, wherein comprising the different features of a fluid with at least two different methods are measured and a measure for the quality of the fluid is derived and/or a process of the fluid deterioration is identified by comparing the results of the measurements of the at least two different methods, where the methods includes at least one optical absorption measurement and at least one electron paramagnetic resonance measurement.

Abstract: An arrangement for controlling and/or monitoring at least one subsea device may include: a first level node communicatively, in particular electrically and/or fiberoptically connectable to an equipment above a sea surface of a sea; at least one second level node communicatively, e.g., electrically and/or fiberoptically connected to the first level node and electrically connectable to the at least one subsea device, wherein the first level node and the at least one second level node are arrangeable at a sea bottom of the sea. A corresponding method is also disclosed.

Abstract: A subsea communication device is configured for data communication with a topside device over a first communication link. The subsea communication device includes a plurality of second interface units for data communication with plural subsea units over second communication links which are point-to-point communication links. A processing circuit of the subsea communication device is provided for signal and data conversion.

Abstract: A subsea communication adapter for providing communication between a first subsea unit including a communication interface operating according to a first communication method and a second subsea unit including a communication interface operating according to a second communication method is provided. The subsea communication adapter includes a first communication interface operating according to the first communication method and a second communication interface operating according to the second communication method. A conversion unit is configured to convert between the first communication method and the second communication method. The conversion includes at least a conversion between a first communication protocol of the first communication method and a second communication protocol of the second communication method.

Abstract: A method and system for monitoring the quality of fluids, wherein comprising the different features of a fluid with at least two different methods are measured and a measure for the quality of the fluid is derived and/or a process of the fluid deterioration is identified by comparing the results of the measurements of the at least two different methods, where the methods includes at least one optical absorption measurement and at least one electron paramagnetic resonance measurement.

Abstract: A displacement sensor for sensing the displacement of a movable component of a device is provided. A flexible element of the displacement sensor includes a mounting portion mounted to the device and a coupling portion spaced apart from the mounting portion. A displacement conversion mechanism is coupled to the movable component and is further coupled to the coupling portion of the flexible element. The displacement conversion mechanism is configured to convert a larger displacement of the movable component into a smaller displacement of the coupling portion of the flexible element. The flexible element is arranged such that a displacement at the coupling portion causes the flexible element to bend.

Abstract: A displacement sensor for sensing the displacement of a movable component is provided. The displacement sensor includes a displacement transmission mechanism configured to reduce a large displacement provided at its input into a smaller displacement at its output. The displacement sensor further includes a fiber optic displacement sensor, wherein the output of the displacement transmission mechanism is coupled to the fiber optic displacement sensor.

Abstract: A routing facility (1) for a subsea electronics module (7) has on a single circuit board (2) a facility (5) for routing data packets between segments of a differential serial bus, and at least one input/output interface (14, 15, 16) for digital and/or analog process values, wherein the process values are accessible via the differential serial bus.

Abstract: A displacement sensor for sensing the displacement of a movable component of a device is provided. A flexible element of the displacement sensor includes a mounting portion mounted to the device and a coupling portion spaced apart from the mounting portion. A displacement conversion mechanism is coupled to the movable component and is further coupled to the coupling portion of the flexible element. The displacement conversion mechanism is configured to convert a larger displacement of the movable component into a smaller displacement of the coupling portion of the flexible element. The flexible element is arranged such that a displacement at the coupling portion causes the flexible element to bend.

Abstract: A displacement sensor for sensing the displacement of a movable component is provided. The displacement sensor includes a displacement transmission mechanism configured to reduce a large displacement provided at its input into a smaller displacement at its output. The displacement sensor further includes a fiber optic displacement sensor, wherein the output of the displacement transmission mechanism is coupled to the fiber optic displacement sensor.

Abstract: An arrangement for controlling and/or monitoring at least one subsea device may include: a first level node communicatively, in particular electrically and/or fiberoptically connectable to an equipment above a sea surface of a sea; at least one second level node communicatively, e.g., electrically and/or fiberoptically connected to the first level node and electrically connectable to the at least one subsea device, wherein the first level node and the at least one second level node are arrangeable at a sea bottom of the sea. A corresponding method is also disclosed.

Abstract: In a method for controlling an electronic device (1) with a programmable component and an independent microcontroller (10) and in such an electronic device (1), by the microcontroller (10), the component is monitored, a malfunction of the component is identified and the component is reprogrammed.

Abstract: A routing facility (1) for a subsea electronics module (7) has a microcontroller (3), a field programmable gate array (4) and at least two router resources (5) on a single circuit board (2), each router resource (5) comprising a respective local transceiver (9) for a differential serial bus and a respective remote transceiver (10) for the differential serial bus, wherein each local transceiver (9) is connected with the corresponding remote transceiver (10) and with the field programmable gate array (4) that is able to route data packets between the router resources (5).

Abstract: A method for communicating binary data via an electric signal of a subsea power line includes establishing a point-to-point connection between a subsea electronic unit and a topside electronic unit for transmitting binary data via the electric signal of the subsea power line; the subsea electronic unit modulating binary data onto said electric signal using orthogonal frequency division multiplexing (OFDM), using 10-200 individual carrier bands in a selected radio frequency range; communicating the OFDM-modulated binary data via the subsea power line to the topside electronic unit; and the topside electronic unit demodulating the OFDM-modulated binary data, including passing the electric signal through a low-pass filter and passing said radio frequency with the modulated binary data through a band-pass filter.

Abstract: In a method and a modem (1) for communicating binary data via an electric signal (E, E1, E2) of a subsea power line (2), the binary data is modulated onto the electric signal (EmodRF, E1modRF, E2modRF) using orthogonal frequency division multiplexing (OFDM).

Abstract: The invention relates to a routing facility (1) for a subsea electronics module (7), comprising on a single circuit board (2) means (5) for routing data packets between segments of a differential serial bus, and at least one input/output interface (14, 15, 16) for digital and/or analogue process values, wherein said process values are accessible via said differential serial bus.

Abstract: A routing facility (1) for a subsea electronics module (7) has a microcontroller (3), a field programmable gate array (4) and at least two router resources (5) on a single circuit board (2), each router resource (5) comprising a respective local transceiver (9) for a differential serial bus and a respective remote transceiver (10) for the differential serial bus, wherein each local transceiver (9) is connected with the corresponding remote transceiver (10) and with the field programmable gate array (4) that is able to route data packets between the router resources (5).

Abstract: In a method for controlling an electronic device (1) with a programmable component and an independent microcontroller (10) and in such an electronic device (1), by the microcontroller (10), the component is monitored, a malfunction of the component is identified and the component is reprogrammed.