7 research outputs found
Application of Modern Multi-Sensor Holter in Diagnosis and Treatment
Modern Holter devices are very trendy tools used in medicine, research, or sport. They monitor a variety of human physiological or pathophysiological signals. Nowadays, Holter devices have been developing very fast. New innovative products come to the market every day. They have become smaller, smarter, cheaper, have ultra-low power consumption, do not limit everyday life, and allow comfortable measurements of humans to be accomplished in a familiar and natural environment, without extreme fear from doctors. People can be informed about their health and 24/7 monitoring can sometimes easily detect specific diseases, which are normally passed during routine ambulance operation. However, there is a problem with the reliability, quality, and quantity of the collected data. In normal life, there may be a loss of signal recording, abnormal growth of artifacts, etc. At this point, there is a need for multiple sensors capturing single variables in parallel by different sensing methods to complement these methods and diminish the level of artifacts. We can also sense multiple different signals that are complementary and give us a coherent picture. In this article, we describe actual interesting multi-sensor principles on the grounds of our own long-year experiences and many experiments
Research and Development of a COVID-19 Tracking System in Order to Implement Analytical Tools to Reduce the Infection Risk
The whole world is currently focused on COVID-19, which causes considerable economic and social damage. The disease is spreading rapidly through the population, and the effort to stop the spread is entirely still failing. In our article, we want to contribute to the improvement of the situation. We propose a tracking system that would identify affected people with greater accuracy than medical staff can. The main goal was to design hardware and construct a device that would track anonymous risky contacts in areas with a highly concentrated population, such as schools, hospitals, large social events, and companies. We have chosen a 2.4 GHz proprietary protocol for contact monitoring and mutual communication of individual devices. The 2.4 GHz proprietary protocol has many advantages such as a low price and higher resistance to interference and thus offers benefits. We conducted a pilot experiment to catch bugs in the system. The device is in the form of a bracelet and captures signals from other bracelets worn at a particular location. In case of contact with an infected person, the alarm is activated. This article describes the concept of the tracking system, the design of the devices, initial tests, and plans for future use
Elektro – optický monitoring citrátu sodného aplikovatelného v hemodialýze
V tĂ©to práci se popisujĂ naše počáteÄŤnĂ experimenty ve vĂ˝voji „on-line“ senzoru na monitoring koncentrace citrátu sodnĂ©ho (Na3C6H2O7) v mimo mozkovĂ©m proudÄ›nĂ krve v prĹŻbÄ›hu hemodialĂ˝zy. PĹ™esnĂ˝ a rychlĂ˝ monitoring by umoĹľnil regulaci koncentrace citrátu a návrat do krevnĂho Ĺ™eÄŤištÄ› tÄ›la v jeho pĹŻvodnĂch hodnotách, tĂm pacienta vĂ˝znamnÄ› mĂ©nÄ› zatĂĹľenĂ©ho neĹľ v pĹ™Ătomnosti. Nedávno jsme se soustĹ™edili na stanovenĂ koncentrace měřenĂm elektrickĂ© impedance a odrazivosti ve zkoumanĂ© krvi. Našim cĂlem je zkoumat trendy vlivu tÄ›chto signálĹŻ na koncentraci a vyvinout vhodnou metodiku, která mĹŻĹľe bĂ˝t pouĹľita pozdÄ›ji v senzorech. ČásteÄŤnÄ› zaÄŤĂnáme pracovat takĂ© na citlivosti metodiky, pĹ™iÄŤemĹľ bychom rádi vĂ˝poÄŤtem dosáhli ekvivalentnĂ elektrickĂ˝ model Ĺ™ešenĂ. To je zaloĹľeno na elektrochemickĂ©m dvouvrstvĂ©m modelu a korespondenci s Cole-Cole grafyIn this paper, we describe our initial steps in the development of online sensor to monitor the tri-sodium citrate concentration in extra-cerebral blood flow during haemodialysis. Accurate and fast monitoring would allow the regulation of the concentration of citrate returning to the human bloodstream to its original values, thereby, making the patient significantly less burdened than at present. In the early stages, we focused on the determination of concentration by measuring of electrical impedance and reflection in the collected blood. Our aim is to study the trends of influencing these signals by concentration and to develop a suitable methodology that can be used later in the sensor. In part, we begin working on the selectivity of the methodology that we would like to achieve by calculating the equivalent electrical model of the solution. It is based on the electrochemical double layer model and the corresponding Cole-Cole graphs