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This paper presents a design of a batteryless and wireless system that can be used in hospitals to call nurses. Compared to actual nurse calling systems, the proposed transmitter neither needs batteries nor long wires to provide energy. Therefore, it is maintenance-free and can be easily installed. The key feature of the proposed system is that it will harvest its energy from motion. When a patient...
The design of a 13.56 MHz/402 MHz autonomous wireless sensor node with asynchronous ECG monitoring for near field communication is presented. The sensor node consists of an RF energy harvester (RFEH), a power management unit, an ECG readout, a data encoder and an RF backscattering transmitter. The energy harvester supplies the system with 1.25 V and offers a power conversion efficiency of 19% from...
Wireless Sensor Network (WSN) is not completely autonomous and wire free, as Full Functional Devices (FFD), that are part of the network, require continuous power source (AC mains). The main aim of this paper is to make WSN completely wire free, fully autonomous and self sustainable system. This paper analyzes the feasibility of removing the power line (wired) connection for FFD of WSN. Theoretical...
An instrumented walker is an assistive device designed to assess the effects of upper-limb loading on gait characteristics. Such a device is used in conjunction with a motion analysis system, and electromyography (EMG) (i.e., muscle electrical activity) to gain a complete assessment of the patient's gait patterns during clinical interventions. In this work we developed an instrumented wireless walker...
Power distribution system is one of the important parts of smart grid. Due to its large scale, only a small part in power distribution system employs optical fiber infrastructure. In this paper, we propose an architecture of hybrid short distance RF and wide band communication. We analyze why these two technologies complementary well in power distribution level. We summarized three short distance...
As the interest for sensor networks is growing, the demand for integrating both measurement algorithm and data transmission pushes to develop adapted electronic platforms to address this challenge. The use of radio frequency (RF) passive surface acoustic wave sensors probed by radio modem interfaces commonly found on wireless sensor node platforms is therefore investigated in this work. This approach...
In this paper, a novel power scavenging mote to harness wireless power in the UHF frequencies between 470 and 570 MHz is presented. A broadband monopole antenna prototype inkjet printed on a paper based substrate is used transduce the incident wireless power from its Electromagnetic wave form to a RF AC signal. A conjugately matched voltage multiplier and RF transformer are used to rectify and store...
We evaluate the encapsulation and packaging reliability in fully integrated, fully wireless 100 channel Utah Slant Electrode Array (USEA)/integrated neural interface-recording version 5 (INI-R5) by monitoring the extended long term in-vitro functional stability and recording longevity. The INI encapsulated with 6-µm Parylene-C was immersed in phosphate buffer saline (PBS) for a period of over 12 months...
The impact of environmental configurations on the characteristics and performance of Radio Frequency IDenrification (RFID) passive Ultra-High-Frequency (UHF) tags was presented. Orientation and obstacle effects on the performance of an RFID system were investigated. The range detection sensitivity, the tag orientation sensitivity, as well as the RFID system reliability to the presence of obstacles...
I have designed a computer input device for the visually challenged people using a special type of sensors known as Wearable sensors. This system is completely wireless, doesn't require a normal keyboard. My main objective is to help the blind people to type easily. This keypad will be portable and error made during typing can be easily rectified, which is not available in the older methods.
Wireless communication supposed a great both - quantitative and qualitative, jump in the management of the information, allowing the access and interchange of it without the need of a physical cable connection. The wireless transmission of voice and information has remained in constant evolution, arising new standards like Bluetoothtrade, Wibreetrade or Zigbeetrade developed under the IEEE 802.15...
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