A self-validating digital Coriolis mass-flow meter: an overview

Sensor Devices with High Metrological Reliability

“…Measurement aberration detection permits to reveal faults, taking into account how they change the behaviour of the signal (e.g., bias, noise, etc.). A self-validating Coriolis flow meter developed on the basis of the above sources of additional information provides the self-diagnostics and diagnostics of corresponding actuators, the result of measurements being accompanied by a value of uncertainty (Henry et al, 2000). In (Feng et al, 2007), sources of information intended for diagnostics of sensor device faults are classified in the following way:  hardware redundancy (e.g., combination of a thermocouple and resistance thermometer);  analytical redundancy taking into account a known relationships between the signals of several sensors or the signals of sensors and parameters of a technological process model;  information redundancy of a sequence of sensor device signals which is revealed with the help of mathematical methods.…”

“…Development of sensor devices with a structure that enables, to some extent, to control their metrological serviceability within the process of operation has been started in Russia since 1980s (Druzhinin & Kochugurov, 1988;Sapozhnikova, 1991;Sapozhnikova et al, 1988;Tarbeyev et al, 2007). Later on, such activity was also expanded in the UK and USA as well as in Germany, China and other countries (Barberree, 2003;Hans & Ricken, 2007;Henry & Clarke, 1993;Henry et al, 2000;Feng et al, 2007Feng et al, , 2009Reed, 2003;Werthschutzky & Muller, 2007;Werthschutzky & Werner, 2009). In general, the above works are of an heuristic character.…”

From research to product using a common development platform

“…In the Coriolis prototype, a significant proportion of transmitter functionality has been implemented within the FPGA, and in particular the entire amplitude control subsystem (Clarke, 1998;Henry et al, 2000). This reads the sensor data and uses it to synthesise the drive waveform, a function carried out in analogue hardware within the original commercial transmitter.…”

“…Ironically, much of the technology used to implement the prototype described in Henry et al (2000) is now obsolete. As well as using eight 3000-series Xilinx FPGAs, it was based on transputers, due to the legacy of prior research within the group.…”

Diagnostic flow metering using ultrasound tomography

“…Flow diagnostic parameters are derived from mean flow velocity distribution to verify the flow conditions as to whether the velocity profile is fully-developed turbulent or not [8][9][10][11]. While most of the previous works have focused on the selfvalidation of flow metering in a metering station in applications with wireless sensor networks, some other works have suggested flow diagnostic parameters to investigate flow conditions by examining the mean flow velocity profile.…”