SYSTEM OPERATIONS
Development of a real-time machine learning system for MGS At SHJ Medical Gas Specialists, based in Chesham, UK, we have developed a real- time machine learning system for the optimal operation of MGS, utilising a set of emerging IT technologies including 4G/5G , artificial intelligence (AI), the IoT, blockchain and cloud and edge computing. It uses real-time big data analytics to enhance productivity and efficiency and to optimise decision making and performance, creating an opportunity to apply real-time AI techniques for advanced control, management and maintenance by collecting data from sources on the IoT networks. Qualitative and quantitative data
analysis builds a next-generation decision support system that can also action changes to optimise the efficient operation of MGS. This is a new data-driven model that is dramatically changing the landscape of the healthcare sector by providing digital solutions with innovative measures. Experimental results have demonstrated that up to 30 per cent of energy costs can be saved through real- time AI optimisation. Optimum performance of system
operations is achieved by leveraging the trained deep neural network (DNN) with edge computing and distributed cloud over the IoT communication networks, where the sensing capabilities and the computational power are provided by the designed controller, transmitter and distributed cloud to track everything that is relevant to operations. Through such deep learning and big data analysis, we can develop a knowledge base from which to correct errors and perform focused maintenance procedures without unnecessary interruptions, thus improving efficiency and maximising profitability. It has been shown that the real-time machine learning system can be used to provide fault detection and isolation capabilities and can be integrated within an optimal control framework (trained by AI) to respond to the changing conditions of medical air plants. This optimal controller is enabled to provide its own monitoring capabilities which can be used to identify faults within the process and also within the controller itself. As discussed previously, compressed
air currently costs many times the price of electricity and MGS are often operated inefficiently. IoT and blockchain technologies can be used to modernise medical gas alarms, improve reliability and security and reduce networking costs. Remote monitoring, fault detection and isolation tasks can be performed to achieve the maximum life and efficiency from MGS using fibre-optic/industrial bus or wireless (or both for redundancy), designed and built for real-time data collecting and analysis.
IFHE DIGEST 2021
The fibre-optic communication thus has been developed to increase data rates without electromagnetic or radio frequency interference (EMI/RFI), and to provide a cost-effective way to transmit more information with guaranteed safety. The wireless communication network based on self-developed protocol by an ultra-high frequency (UHF) radio frequency (RF) can achieve up to a two kilometre wireless link. With the IoT communication network built, real-time monitoring and intelligent control of MGS can be achieved, so that we can have an eagle-eye view of every event while it is happening. The IoT networks developed will require
greater capacity to support sensors that monitor and control a wide range of industrial processes and equipment, reporting back into a central console. Not only is the IoT driving more bandwidth, it is also driving a consolidation of IT systems to better process valuable production data and enable faster decision making based on this information. Coupled with emerging technologies such as 4G/5G and blockchain resistant to modification of the data to connect people and business processes, the IoT allows objects to be sensed or controlled remotely across the network. This creates opportunities for more direct integration of the physical world into computer-based systems, and results in improved efficiency, accuracy and economic benefit as well as reduced human intervention. It also creates an opportunity to
improve the efficiency of intelligent MGS by applying machine learning and AI techniques for advanced control, management and maintenance. This allows the upgrade of current systems by
collecting data from all sources on the IoT networks for real-time big data analytics. Such next-generation decision support systems will optimise the efficient use and operations of MGS. With the development and implementation of remote monitoring and intelligent control of MGS through the integration of advanced data communication technologies for industrial IoT networks with combined edge computing and distributed cloud for machine learning, a new optimal, energy- efficient operation of medical compressed air plant has been developed. Massive data, such as from vibration and acoustic measurements, is remotely collected through the newly-built supervisory control and data acquisition (SCADA) and IoT networks. The complex processes are modelled
and trained by a DNN using multilayer perceptron (MLP) with adaptive learning rate and wavelet activation function. This rapidly identifies network coefficients for minimising energy consumption by Bayesian optimisation with Gaussian processes, and allows higher accuracy of fault detection and prediction (such as leakage), and condition monitoring-based predictive maintenance (using AI algorithms to predict the next failure of a component/machine/system). This leads to a highly efficient and reliable operation of MGS.
System Implementation SHJ has developed and implemented a real-time machine learning system from product design to customised production, through feasibility studies, innovative technologies development and system prototype testing. Using printed circuit boards (PCBs) as machine controllers, signal collectors and transmitters and developing IoT communication networks for real-time monitoring, control and AI optimisation, we have constructed an intelligent plant control and predictive maintenance system for the highly efficient operation of MGS. It enables remote monitoring and
control, risk reduction and shorter response times and provides essential management data for predictive maintenance purposes. This has been achieved through changing the current way of designing, installing and running MGS. The next-generation SCADA and IoT networks and the products and intelligent energy-saving systems developed use a three-level process and data specification framework:
SHJ’s Empower plant control system provides real-time diagnostics, alerts and fault detection on their medical gas plant.
SCADA and IoT networks with data communication assured by blockchain 1 UHF (RF Wireless, product deliverable) to on-site remote monitoring station/tablet PC screen.
2 Hardwired (RS485/Optical Fibre, 41
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