14 documents found, page 1 of 2
Design of a Cardiopulmonary antenna for vital signs monitoring robust to differ...
Cardoso, João; Pinho, Pedro; Gouveia, Carolina; Albuquerque, DanielWith the advancement of wireless diagnosis and treatment technologies, antennas deployed close to the human body are now widely used. The use of on-body antennas, along with other technologies, presents itself as an innovative method for detecting and monitoring vital signs. These antennas can be attached directly on the body or on clothes, making it comfortable to use and less invasive when compared to convent...
Limits of WPT through the human body using Radio Frequency
Duarte, Rodrigo; Gouveia, Carolina; Pinho, Pedro; Albuquerque, DanielRecently, the medical community has been devel oping new technologies to enhance medical treatments and diagnosis means, having in mind the patients’ comfort and safety. Implantable medical devices are an example of such solutions. Nonetheless, these devices present some disadvantages, namely need of batteries. Hence, these implants have a limited lifetime, and require periodical surgical interventions to chang...
Textile antenna for first-person view goggles
André, Luís; Pinho, Pedro; Gouveia, Carolina; Loss, CarolineUnmanned Aerial Vehicles, also known as drones, are vehicles controlled remotely. First-Person View (FPV) technology allows these vehicles to have greater versatility and be more easily piloted. The antennas currently used for video transmission are bulky and uncomfortable, so there is a need for this volume to be reduced to increase portability, being this the focus of the paper. The antenna was developed in t...
Textile antenna for bio-radar embedded in a car seat
Loss, Caroline; Gouveia, Carolina; Salvado, Rita; Pinho, Pedro; Vieira, JoséA bio-radar system is presented for vital signs acquisition, using textile antennas manufactured with a continuous substrate that integrates the ground plane. Textile antennas were selected to be used in the RF (Radio Frequency) front-end, rather than those made of conventional materials, to further integrate the system in a car seat cover and thus streamline the industrial manufacturing process. The developmen...
Dynamic digital signal processing algorithm for vital signs extraction in conti...
Gouveia, Carolina; Albuquerque, Daniel; Vieira, José; Pinho, PedroRadar systems have been widely explored as a monitoring tool able to assess the subject's vital signs remotely. However, their implementation in real application scenarios is not straightforward. Received signals encompass parasitic reflections that occur in the monitoring environment. Generally, those parasitic components, often treated as a complex DC (CDC) offsets, must be removed in order to correctly extra...
Textile rectenna for RF energy harvesting
Silva, Fábio; Almeida, Rita; Gouveia, Carolina; Loss, Caroline; Pinho, Pedro; Belo, DanielWearable devices are part of many people’s lives, however the batteries they need are a major limitation. In order to solve this problem, an energy harvesting system was studied and implemented, to replace the battery usage and thus enhance the device portability. It is composed by two antennas, one for transmitting and the other for receiving, and a rectifier circuit. The system was completely developed in tex...
Textile antenna array for bio-radar applications
Gouveia, Carolina; Loss, Caroline; Raida, Zbynek; Lacik, Jaroslav; Pinho, Pedro; Vieira, JoséIn this paper, a 2 x 2 antenna array operating at 5.8 GHz is presented for vital signs acquisition using a radar-based system, also known as bio-radar. Since these non-contact systems have multiple applications, their front-end design should take into account the monitoring environment of each specific application. In this sense, the antenna design has a crucial role to guarantee the proper integration of the f...
Study on the usage feasibility of continuous-wave radar for emotion recognition
Gouveia, Carolina; Tome, Ana; Barros, Filipa; Soares, Sandra C.; Vieira, José; Pinho, PedroNon-contact vital signs monitoring has a wide range of applications, such as in safe drive and in health care. In mental health care, the use of non-invasive signs holds a great potential, as it would likely enhance the patient's adherence to the use of objective measures to assess their emotional experiences, hence allowing for more individualized and efficient diagnoses and treatment. In order to evaluate the...
Study on the usage feasibility of continuous-wave radar for emotion recognition
Gouveia, Carolina; Tomé, Ana; Barros, Filipa; Soares, Sandra C.; Vieira, José; Pinho, PedroNon-contact vital signs monitoring has a wide range of applications, such as in safe drive and in healthcare. In mental health care, the use of non-invasive signs holds a great potential, as it would likely enhancethe patient’s adherence to the use of objective measures to assess their emotional experiences, henceallowing for more individualized and efficient diagnoses and treatment. In order to evaluate the po...
A review on methods for random motion detection and compensation in bio-radar s...
Gouveia, Carolina; Vieira, José; Pinho, PedroThe bio-radar system can measure vital signals accurately, by using the Doppler effect principle, which relates the received signal properties to the distance change between the radar antennas and the subject chest-wall. These systems have countless applications, from short range detection to assist in rescue missions, to long-term applications as for the continuous sleeping monitoring. Once the main applicatio...