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This paper presents the design of a safety system based on controlled electromagnetic field (CEMF) sensing technology to prevent accidents caused by power tools, especially related to handheld circular saws. The safety system creates an invisible protection bubble of electromagnetic field around the cutting edge. The system can provide early warning or critical warning when a person penetrates the safety bubble. This paper covers how the CEMF technology has been adapted to add value within this application where it needs to coexist with a difficult environment of metallic parts turning thousands of times per minute, strong vibrations, and different ranges of materials to be processed. The proposed contactless solution successfully detects the user, providing enough time for the power tool to totally stop its movement before touching and harming the user. This key property has required a careful optimization of the electromagnetic field generation, the design of a shield circuitry capable of operating properly in a large metal device, and the development of a multi-frame algorithm to address the stringent requirements related to the ability of the system to react to both very fast and very slow events. The feasibility of the system has been validated by a virtual testbench.

Resumen: Este artículo es continuación de la revisión iniciada en el número anterior sobre la utilidad de la ecografía clínica musculoesquelética en atención primaria, y completa los escenarios de lesiones musculares, artrosis, enfermedades reumatológicas y procesos ecoguiados. Abstract: This article is a continuation of the review initiated in the previous issue about the usefulness of musculoskeletal point of care ultrasound in Primary Care, completing the scenarios of muscle injuries, osteoarthritis, rheumatological diseases and eco-guided procedures. Palabras clave: Ecografía clínica, Medicina familiar, Utilidad, Fiabilidad, Keywords: Point of care ultrasound, Family Practice, Usefulness, Reliability

Resumen: La ecografía musculoesquelética (EME) es una técnica que se ha extendido en los últimos años a la práctica totalidad de las especialidades médicas que abarcan esta parte de la patología. El médico de familia (MF) no ha sido ajeno a este proceso por su amplísimo espectro de competencias, usándola en gran cantidad de situaciones de su práctica habitual en las cuales obtiene rentabilidad de ella de modo fiable, eficiente y eficaz.La dotación de ecografía en los centros de Atención Primaria (AP) es una realidad creciente, aportando elevadas cotas de accesibilidad, inmediatez y capacidad de manejo clínico, lo que, unido a la elevada prevalencia de problemas del aparato locomotor en este ámbito, convierten a la EME en una acción estratégica de mejora de la capacidad resolutiva y de la calidad de la atención sanitaria.Para asegurar la competencia de quienes la practican, se hace necesario definir los beneficios y los potenciales riesgos que su uso puede generar, así como sus escenarios de aplicación, evitar exploraciones innecesarias y optimizar la inversión que supone dotar de este recurso al nivel de AP. Este artículo pretende resumir el estado actual de la ecografía clínica musculoesquelética y su utilidad para el MF en aquellos escenarios en los que resulta fiable y eficaz. Abstract: Musculoskeletal ultrasound (MSU) is a technique which has been extended to practically all medical specialties that comprise this pathology. Family Doctor (FD) has not been away from this process due to its great wide of competences, using it in different scenarios inside his common practice in which he can get profits in a reliable, efficient and effective way.Ultrasound equipment incorporation in Primary Care (PC) centers is an increasing reality, contributing to high ranges of accessibility, immediacy and clinic handle capability, and thus, together with the high prevalence in this area in locomotor apparatus, turns MSU into an strategic action for the improvement of the resolving capacity and consequently for the health care.To ensure proficiency among users, it's being necessary to define the benefits and potential risks its use can cause, as well as its different scenarios, avoiding unnecessary explorations and optimizing the investment of this resource at PC level. This paper pretends to summarize the state of the art of the musculoskeletal ultrasound and its benefits for the FD into this efficient and effective scenarios. Palabras clave: Ecografía clínica, Medicina familiar, Utilidad, Fiabilidad, Keywords: Point of care ultrasound, Family practice, Usefulness, Reliability

This paper presents the design of a wireless flood sensor to detect the presence of water on home floors, providing early warning of water leaks. A wireless sensor network has been deployed to gather the measurements from the sensor nodes. A control central coordinates the network and processes the data. Users can remotely inquire for the presence of water, status of the batteries for a specific node, the type of liquid and information about its functionality and alarms, thanks to a proprietary software application. The alerts are also communicated to the user within the home through an audible siren. The designed device is optimized in terms of costs, ease of deployment and maintenance, thus making it widely acceptable to end users.

This work presents the design, construction and testing of a new embedded sensor system for monitoring concrete curing. A specific mote has been implemented to withstand the aggressive environment without affecting the measured variables. The system also includes a real-time monitoring application operating from a remote computer placed in a central location. The testing was done in two phases: the first in the laboratory, to validate the functional requirements of the developed devices; and the second on civil works to evaluate the functional features of the devices, such as range, robustness and flexibility. The devices were successfully implemented resulting in a low cost, highly reliable, compact and non-destructive solution.

This paper presents a wireless fault detection system for industrial motors that combines vibration, motor current and temperature analysis, thus improving the detection of mechanical faults. The design also considers the time of detection and further possible actions, which are also important for the early detection of possible malfunctions, and thus for avoiding irreversible damage to the motor. The remote motor condition monitoring is implemented through a wireless sensor network (WSN) based on the IEEE 802.15.4 standard. The deployed network uses the beacon-enabled mode to synchronize several sensor nodes with the coordinator node, and the guaranteed time slot mechanism provides data monitoring with a predetermined latency. A graphic user interface offers remote access to motor conditions and real-time monitoring of several parameters. The developed wireless sensor node exhibits very low power consumption since it has been optimized both in terms of hardware and software. The result is a low cost, highly reliable and compact design, achieving a high degree of autonomy of more than two years with just one 3.3 V/2600 mAh battery. Laboratory and field tests confirm the feasibility of the wireless system.