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Event-driven,pattern-based methodology for cost-effective development of standardized personal health devices
Authors:Miguel Martí  nez-Espronceda,Jesú  s D. Trigo,Santiago Led,H. Gilberto Barró  n-Gonzá  lez,Javier Redondo,Alfonso Baquero,Luis Serrano
Affiliation:1. Electrical and Electronics Engineering Department, Public University of Navarre (UPNA), Pamplona, Spain;2. The Coordination of Electronic and Communication Engineering, Autonomy University of Nuevo León, University Avenue s/n, University City, San Nicolás de los Garza, NL 66450, Mexico
Abstract:Experiences applying standards in personal health devices (PHDs) show an inherent trade-off between interoperability and costs (in terms of processing load and development time). Therefore, reducing hardware and software costs as well as time-to-market is crucial for standards adoption. The ISO/IEEE11073 PHD family of standards (also referred to as X73PHD) provides interoperable communication between PHDs and aggregators. Nevertheless, the responsibility of achieving inexpensive implementations of X73PHD in limited resource microcontrollers falls directly on the developer. Hence, the authors previously presented a methodology based on patterns to implement X73-compliant PHDs into devices with low-voltage low-power constraints. That version was based on multitasking, which required additional features and resources. This paper therefore presents an event-driven evolution of the patterns-based methodology for cost-effective development of standardized PHDs. The results of comparing between the two versions showed that the mean values of decrease in memory consumption and cycles of latency are 11.59% and 45.95%, respectively. In addition, several enhancements in terms of cost-effectiveness and development time can be derived from the new version of the methodology. Therefore, the new approach could help in producing cost-effective X73-compliant PHDs, which in turn could foster the adoption of standards.
Keywords:APDU, application protocol data unit   ASN.1, abstract syntax notation one   DIM, domain information model   ECG, electrocardiogram   FSM, finite state machine   IPC, inter-process communications   LV&ndash  LP, low-voltage low-power   MDER, medical device encoding rules   MDS, medical device system   PHD, personal health device   RAM, random access memory   RO, read-only   RW, read-write   X73, ISO/IEEE11073   X73PHD, ISO/IEEE11073 for personal health devices
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