Development of a low-power xenon ion thruster for light-weight satellites

Small, light-weight, low-power, low-cost, high performance computing for CubeSats

2014 IEEE Aerospace Conference ◽

10.1109/aero.2014.6836523 ◽

2014 ◽

Cited By ~ 2

Author(s):

John R. Samson

Keyword(s):

Low Power ◽

High Performance Computing ◽

High Performance ◽

Low Cost ◽

Light Weight ◽

Performance Computing

Download Full-text

Design and implementation of atmospheric multi-parameter sensor for UAV-based aerosol distribution detection

Sensor Review ◽

10.1108/sr-09-2016-0199 ◽

2017 ◽

Vol 37 (2) ◽

pp. 196-210 ◽

Cited By ~ 5

Author(s):

Fangjie Yu ◽

Yunfei Liu ◽

Longqing Fan ◽

Linhua Li ◽

Yong Han ◽

...

Keyword(s):

Vertical Distribution ◽

Embedded System ◽

Low Power ◽

Aerosol Particle ◽

Particle Concentration ◽

Pressure Probe ◽

Light Weight ◽

Content Type ◽

The Difference ◽

Pm2.5 And Pm10

Purpose In this paper, a light-weight, low-power atmospheric multi-parameter sensor (AMPS), which could be mounted on small flying platforms such as a tethered balloon, a quad-rotor unmanned aerial vehicle (UAV), a UAV helicopter, etc., is implemented and integrated to sample vertical distribution of aerosols with integrated parameters of aerosol particle concentration, temperature, relative humidity and atmospheric pressure. Design/methodology/approach The AMPS integrates three kinds of probes in an embedded system. A synchronous method based on GPS is proposed to drive the laser aerosol particle sensor, the temperature and humidity probe and the pressure probe to sample four channels approximately simultaneously. Different kinds of housing are designed to accommodate various flying platforms, and the weight is controlled to adapt the payload of each platform. Findings A series of validation tests show that while the AMPS achieves high precision, its power consumption is less than 1.3 W, which is essential for light flying platforms. The AMPS was mounted on different flying platforms and the difference was evaluated. For three times every five days, vertical profiles of PM2.5 and PM10 concentrations were observed by the AMPS mounted on a quad-rotor UAV, which revealed the significant correlation between the aerosol particle concentration and atmospheric parameters. Originality/value A new light-weight and low-power AMPS for small flying platforms is designed and tested, which provides an effective way to explore the properties of aerosol vertical distribution, and to monitor pollutants flexibly.

Download Full-text

Light-weight Routing Protocol in IoT-based Inter-Device Telecommunication Wireless Environment

International Journal of Electrical and Computer Engineering (IJECE) ◽

10.11591/ijece.v6i5.10504 ◽

2016 ◽

Vol 6 (5) ◽

pp. 2352 ◽

Cited By ~ 1

Author(s):

Hayoung Oh ◽

Sangsoon Lim

Keyword(s):

Low Power ◽

Routing Protocol ◽

Probability Distributions ◽

Base Stations ◽

Neighbor Discovery ◽

Light Weight ◽

Lossy Networks ◽

Ipv6 Address ◽

Wireless Environment ◽

Iot Devices

<p><span lang="EN-US">The primary task for IoT-based hyper-connectivity communications lies in the development of direct communications technique among IoT devices in RPL (Routing Protocol for Low-Power and Lossy Networks) environment without the aid from infras such as access points, base stations etc. In a low-power and lossy wireless network, IoT devices and routers cannot keep the original path toward the destination since they have the limited memory, except for a limited number of the default router information.. Different from the previous light-weight routing protocols focusing on the reduction of the control messages, the proposed scheme provides the light-weight IPv6 address auto-configuration, IPv6 neighbor discovery and routing protocol in a IoT capable infra-less wireless networks with the bloom filer and enhanced rank concepts. And for the first time we evaluate our proposed scheme based on the modeling of various probability distributions in the IoT environments with the lossy wireless link. Specifically, the proposed enhanced RPL based light-weight routing protocol improves the robustness with the multi-paths locally established based on the enhanced rank concepts even though lossy wireless links are existed. We showed the improvements of the proposed scheme up to 40% than the RPL based protocol.</span></p>

Download Full-text