Distributed System for Patient Remote Monitoring Abilio Parada, Gabriel Gruppelli, Raphael Tomé, Lisane Brisolara Grupo de Arquitetura e Circuitos Integrados - GACI Universidade Federal de Pelotas –UFPel Pelotas - Brasil {agparada, gpgruppelli, rtsantana, lisane}@inf.ufpel.edu.br Abstract — This report presents a distributed system for management and remote monitoring patients in Home Care, called PRMDS. This proposed system can capture and monitoring temperature, blood pressure, as other body signals through monitoring nodes. Sensors connected to a node by wired or wireless default interfaces captures these signals. To allow remote monitoring, a network connection should be configured. Each monitoring node should send information for registered nodes installed in other residences. Every node can be a server, avoiding common problems found on a centralized solution (e.g. server down). Our solution solves it managing a priority queue used to determine the new server in case of problem to connect the current server. For the users, health professionals, it is transparent and the access to patient data is maintained using the same address. Thus, our prototype consists of a monitoring module and some sensors to demonstrate the capture of signals. This prototype is connected to other modules (emulated by laptops) to demonstrate communication and management of the data distribution. Keywords—Home Care; monitoring; Home Healthcare; patient monitoring devices; body sensors I. INTRODUCTION The number of ancients in Brazil has growing and, consequently, the healthcare costs have also increasing, mainly when hospitalizations are necessary. In a very big country, as Brazil, the problem of patient be distant of specialized doctors can be a worsening to the healthcare cost elevation. On other hand, new and low cost technologies offer opportunities until now inaccessible, as to produces innovation and create new ways of access to health treatments. A recent trend in medical assistance is the Home Care, where the patient receives treatment and/or is monitored at his own home instead to stay in the hospital. This approach has several advantages, potentially reducing hospitalization costs and increasing the quality of life for both the patient and their families. Furthermore, it reduces the patient contact with a high risk of infection environment. An important part of home care, which has become possible due in part to the advances and costs reduction of communication and computing technologies, is the Remote Patient Monitoring (RPM). In RPM, sensors measure the patient's vital information and transmit this information to an external receiver, e.g. located in the hospital, clinic or directly to the doctor, who can access them through your phone, tablet or personal computer. Through RPM, besides having access to the information of the current state of the patient, the doctor can also be warned by the system when a sensor detects any anomalous condition, sending alerts to the responsible professional (clinic or hospital). These sensors, in addition to measuring the patient's vital information, can perform other telemetry tasks, such as inform the location of the patient at home, identifying medicines, etc. Current technologies such as RFID, NFC and smart phones can assist in these tasks. To make feasible the RPM, a system capable of capturing information from the sensors, store and make available for remote access should be developed. Additionally, this system must be integrated, via communication network, among themselves and with a front-end device through which health professionals can perform the patient monitoring. Medical equipment represent an important sub-area of application in the field of embedded systems. This sub-area is interesting since several features that are often associated with medical equipment are common to the domain of embedded systems, such as real-time, reliability and robustness, low power consumption, among others. The technological progress has enabled the definition of new miniaturized sensors, which enables assessment of a number of critical parameters to the health of a patient. The developments in communication technologies also allow these sensors to be accessed using different communication protocols, including wireless. The goal of the proposed system is to support remote monitoring of many patients, located in different addresses, and continuous record and make available multiple biomedical signals such as ECG, pulse, temperature, oxygen and blood pressure. This project intends make possible the development of a distributed system to remote monitoring patients in Home Care. Instead of a centralized solution, where the data collected from patients are sent to a single server, this project gives priority to