Although there are numerous high performance BMS (Building Management System), which monitor the indoor climate parameters, data access, sensor positioning, and other aspects may not be under control. On the other hand, IoT (Internet of Things) is experiencing exponential growth, as more and more devices and sensors are connected to the cloud. Thus, a sensor monitoring solution for indoor climate parameters was developed. The proposed solution is not expensive, and it is based on a Raspberry Pi board endowed with temperature, humidity, and pressure sensors. The developed application reads the values detected by the sensors, processes the date, and afterwards transmit the information to the IoT ThingSpeak platform. The large area is characteristic of open space offices, so the influence of radiant walls is small, and the operative temperature can be approximate with air temperature. This type of building is conditioned by the air conditioning system, so the air speed in this indoor environment is usually low and could be approximated by the design. So, with the data read by the developed solution the thermal comfort parameters can be approximated. If inadequate values are found, teams that carry out complex and precise measurements could be sent to the site. To achieve this goal a PMV calculator software is developed. Its validity is tested in accordance with the European standard ISO 7730. After that, the PMV computer is used with data read from sensors. Both the data read from the sensors and the newly calculated PMV are sent to the ThingSpeak IoT platform.

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This paper presents the development of a system for measuring the walking speed on a force plate that measures ground reaction. The walking speed measurement system must meet the following criteria: minimal impact on the force plate, easy installation/dismantling, speed must be detected "without contact" and speed of subject must be detected irrespective of the subject's clothing colour, it must provide the possibility of using several types of force plate, it must allow the addition of new functions and have a competitive price. Ground reaction force was measured using the AMTI's AccuGait force plate and the NetForce component, while analysis was performed using the BioAnalysis module. To assess the three components of the ground reaction force provided by the force plate, for a subject not wearing shoes, walking at different speeds, two measurement sessions were organized: placing optical barriers of the walking speed measurement system at distances of 2.5 m and 0.7 m, respectively. Upon analyzing the values ? ? obtained in this case study, we can observe an increase in values of the following components: vertical component, Fz, medio-lateral component, Fy and anterior-posterior component, Fx at the speed of 2.33 m/s, compared to those obtained at 0.6 m/s. By comparing values provided by the force plate with optical barriers of the walking speed measurement system placed at distances of 2.5 m and 0.7 m, respectively, very small differences can be noticed. Therefore, the position of optical barriers does not affect the measurement of ground reaction force components. KEY WORDS: speed, walking, ground reaction force SISTEM DE MÃSURARE A VITEZEI DE DEPLASARE A SUBIECTULUI UMAN LA MERSUL PE O PLATFORMÃ DE FORÞÃREZUMAT. În cadrul acestei lucrãri se prezintã realizarea unui sistem de mãsurare a vitezei de deplasare deasupra unei platforme de mãsurare a reacþiunii solului. Sistemul de mãsurare a vitezei de deplasare trebuie sã respecte urmãtoarele criterii: impact minim asupra platformei, permiterea unei montãri/demontãri facile, detecþia vitezei sã se realizeze "fãrã contact" ºi cea a subiectului sã se realizeze indiferent de culoarea îmbrãcãmintei subiectului, sã ofere posibilitatea folosirii la mai multe tipuri de platforme de forþã, sã permitã adãugarea unor noi funcþiuni ºi sã fie la un preþ competitiv. Mãsurarea forþei de reacþiune a solului s-a realizat cu platforma AMTI's AccuGait, folosind componenta NetForce, iar analiza acesteia s-a realizat cu modulul BioAnalysis. Pentru evaluarea celor trei componente ale forþei de reacþiune a solului furnizate de platforma de forþã, în cazul unui subiect ce nu poartã încãlþãminte, mergând cu viteze diferite, au fost organizate douã sesiuni de mãsurare: amplasarea barierelor optice ale sistemului de mãsurare a vitezei de mers la distanþa de 2,5 m, respectiv 0,7 m. Analizând valorile obþinute în acest studiu de caz, se poate observa o creºtere a valorilor componentelor: verticale Fz, medio-laterale Fy ºi a celei antero-posterioare Fx la viteza de 2,33 m/s faþã de cele obþi...

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