24 documents found, page 1 of 3
Gait rehabilitation Assessment Based on Microwave Doppler Radars Embedded in Wa...
Postolache, Octavian; Dias Pereira, José Miguel Costa; Viegas, Vítor; Girão, Pedro SilvaHuman gait is a complex motion that implies the movement of different parts of the body such as arms, legs and feet, being the functional human movements’ analysis indispensable for bio-mechanical diagnostic and treatment tool for clinics and rehabilitation services. During the rehabilitation process, walkers are frequently prescribed to improve the patient’s stability but can also be transformed into instrumen...
A dual-proposal device for condition-based maintenance and energy harvesting in...
Pereira, José Dias; Viegas, Vitor; Postolache, Octavian; Girão, Pedro SilvaThis paper presents a dual-purpose device for condition-based maintenance (CBM) and for energy harvesting (EH) in IIoT applications. Vibration monitoring in industrial environments is a key indicator for predictive maintenance purposes and for energy harvesting. The paper includes the description of the hardware and software of a flexible platform that permits vibration measurements, vibration sensor calibratio...
IoT based model of healthcare for physiotherapy
Postolache, Gabriela; Postolache, Octavian Adrien; Pereira, José Miguel Costa Dias; Girão, Pedro Silva; Viegas, VítorSmall and reliable devices that are used not only in clinics or hospital but also in home, give information on movements, activities or other relevant data on person health and functioning. The data acquired by these devices would increase the accessibility to healthcare services and quality of care, in a safe environment. There are scarce data related to integration of Internet of Things (IoT) technologies int...
A preliminary study of loop-time delays in IoT platforms: the ThingSpeak case
Viegas, Vítor; Pereira, José Miguel Costa Dias; Girão, Pedro Silva; Postolache, OctavianIoT platforms play an important role on modern measurement systems because they allow the ingestion and processing of huge amounts of data (big data). Usually, these platforms run as a service on the cloud and are accessed through open programming interfaces based on ubiquitous internet protocols (such as HTTP). Data analysis is done in batch, from time to time, or when a pre-configured event is triggered. Most...
IoT applied to environmental monitoring in oysters’ farms
Viegas, Vítor; Pereira, José Miguel Costa Dias; Girão, Pedro Silva; Postolache, Octavian; Salgado, RicardoNowadays, the aquaculture of oysters represents an important economical activity in coastal and estuarine areas. It is known that the growth rate of oysters is affected by several water parameters, including temperature, salinity, turbidity, pH and dissolved oxygen. In this paper, a cloud-based platform is proposed to acquire water parameters that affect oysters' growth. The paper includes the hardware and soft...
Application of force and inertial sensors to monitor gait on legacy walkers
Viegas, Vitor; Pereira, José Miguel Costa Dias; Postolache, Octavian; Girão, Pedro SilvaWalker assistive devices play an important role in extending the autonomy of elderly people and in recovering the mobility of people affected by locomotion disabilities. The next generation of walkers are hoped to include embedded sensors and data processing capabilities that will allow for the extraction of objective metrics (about gait and body posture) to assist the work of physiotherapists and to enable the...
Monitoring Walker Assistive Devices: A Novel Approach Based on Load Cells and O...
Viegas, Vítor; Pereira, José Miguel Costa Dias; Postolache, Octavian; Girão, Pedro SilvaThis paper presents a measurement system intended to monitor the usage of walker assistive devices. The goal is to guide the user in the correct use of the device in order to prevent risky situations and maximize comfort. Two risk indicators are defined: one related to force unbalance and the other related to motor incoordination. Force unbalance is measured by load cells attached to the walker legs, while moto...
Spy Walker: A Convenient Way to Assess Gait in Walker Assistive Devices
Viegas, Vítor; Pereira, José Miguel Costa Dias; Postolache, Octavian; Girão, Pedro SilvaThis paper presents the Spy Walker, a measurement system intended to characterize gait in walker assistive devices. The proposed system can be easily integrated into any commercial walker without any loss of native functionality. The system makes use of e-textile electrodes to sense the heart rate of the user, load cells to measure the force applied on the walker legs, and an inertial measurement unit to sense ...
Combining distance and force measurements to monitor the usage of walker assist...
Pereira, José Miguel Costa Dias; Viegas, Vítor; Postolache, Octavian; Girão, Pedro SilvaThis paper presents a measurement system that can be used to monitor the usage of walker assistive devices. The forces applied on the legs of the walker device are measured using low cost force sensing resistors and a light detection and ranging device is used to evaluate several gait kinematic parameters, such as, walking speed and walking stride length. To evaluate the right usage of the walker device two wal...
Combining Distance and Force Measurements to Monitor the Usage of Walker Assist...
Pereira, José Miguel Costa Dias; Viegas, Vítor; Postolache, Octavian; Girão, Pedro SilvaThis paper presents a measurement system that can be used to monitor the usage of walker assistive devices. The forces applied on the legs of the walker device are measured using low cost force sensing resistors and a light detection and ranging device is used to evaluate several gait kinematic parameters, such as, walking speed and walking stride length. To evaluate the right usage of the walker device two wal...