Indoor Ultrasonic 3D Seamless Location and Wireless Communication of Metal Can

2012 ◽  
Vol 157-158 ◽  
pp. 788-791
Author(s):  
Xian Zhong Chen ◽  
Ran Ran Li ◽  
Qing Wen Hou
Keyword(s):  
Wireless Communication ◽  
Power Consumption ◽  
Low Power ◽  
Low Cost ◽  
Low Power Consumption ◽  
Rf Transceiver ◽  
Indoor Space ◽  
Wide Range ◽  
Node Location ◽  
Ultrasonic Transmitter

A system with low-cost, low power consumption and wide range of ultrasonic positioning was designed. The node layout is the ultrasonic transmitter vertically installed on the top of the metal can as unknown node, the ultrasonic receivers as beacon nodes, 4 nodes installed on the ceiling and 4 nodes installed on the floor fixed position to receive ultrasonic. Ultrasonic sensor was designed with low power consumption microcontroller Ti MSP430F1611 and RF transceiver chip CC2420. Effective range is 10m, accuracy ± 2cm, launch angle , the system power 200 ~ 400uA/MIPS, 5V lithium battery-powered, Zigbee wireless communication protocol for data transmission. A new algorithm of node location module and Matlab software simulation result were established to achieve 3D seamless positioning of metal can in 20m*2m*2m indoor space.

scholarly journals Integration of highly anisotropic multiferroic BaTiO3–Fe nanocomposite thin films on Si towards device applications

2020 ◽  
Vol 2 (9) ◽  
pp. 4172-4178
Author(s):  
Matias Kalaswad ◽  
Bruce Zhang ◽  
Xuejing Wang ◽  
Han Wang ◽  
Xingyao Gao ◽  
...  
Keyword(s):  
Thin Films ◽  
Power Consumption ◽  
Low Power ◽  
High Speed ◽  
Low Cost ◽  
Low Power Consumption ◽  
Silicon Substrates ◽  
Critical Step ◽  
Nanocomposite Thin Films ◽  
Device Applications

Integration of highly anisotropic multiferroic thin films on silicon substrates is a critical step towards low-cost devices, especially high-speed and low-power consumption memories.

Semi-Physical Simulation System for FMCW Radar

2011 ◽  
Vol 135-136 ◽  
pp. 886-892
Author(s):  
Wen Hui Chen ◽  
Xin Xi Meng ◽  
Xiao Min Liu
Keyword(s):  
Power Consumption ◽  
Low Power ◽  
Physical Simulation ◽  
Continuous Wave ◽  
Low Cost ◽  
Simulation System ◽  
Radar Signal ◽  
Low Power Consumption ◽  
Fmcw Radar ◽  
Data Process

In order to process and analyze the signal of frequency modulated continuous wave (FMCW) radar, a radar semi-physical simulation(RSPS) system based on STM32F103VE6 chip is designed in this paper. By designing the hardware and software of system, the RSPS system can process the radar signal, detect the target, verify the data process algorithm and display the result on TFT-LCD screen. In addition, the collected data can be uploaded to PC by RS-232 interfaces which improves the reliability, stability and practicability of system. The waveform and spectrum maps are utilized to show the feasibility of RSPS system in analysing FMCW radar signal. Experimental results show that this system has many advantages, such as multifunction, low power consumption and low cost.

Bluetooth Hands Free System for Fixed Telephone Research

2012 ◽  
Vol 198-199 ◽  
pp. 1603-1608
Author(s):  
Qing Hua Shang ◽  
Ping Liu
Keyword(s):  
Power Consumption ◽  
Low Power ◽  
Mobile Phones ◽  
Daily Life ◽  
Low Cost ◽  
Low Power Consumption ◽  
Wireless Technology ◽  
Free System ◽  
Wireless Technologies ◽  
The Stability

Wireless technology has walked into the People's Daily life, Bluetooth technology comes to the fore in so many wireless technologies with its low power consumption, low cost and other characteristics. Bluetooth technology is used widely, we can see it in mobile phones or in our cars, it seems that Bluetooth technology has penetrated into every aspect of our lives. Even so, the combination of Bluetooth technology and fixed telephone still has a very big development space. If the stability of the fixed telephone combined with the flexible of Bluetooth technology, it will give the life of people a lot of convenience. This paper will introduces the Bluetooth hands free system for fixed telephone, it is such a product that it will make Bluetooth technology and common fixed phone combined, and make it a reality that people can use common Bluetooth headset to answer or call a fixed telephone.

scholarly journals Development of a camera trap for perching dragonflies: a new tool for freshwater environmental assessment

PeerJ ◽  
2020 ◽  
Vol 8 ◽  
pp. e9681
Author(s):  
Akira Yoshioka ◽  
Akira Shimizu ◽  
Hiroyuki Oguma ◽  
Nao Kumada ◽  
Keita Fukasawa ◽  
...  
Keyword(s):  
Power Consumption ◽  
Low Power ◽  
Low Cost ◽  
Time Lapse ◽  
Camera Trap ◽  
Environmental Indicators ◽  
Low Power Consumption ◽  
Detection Accuracy ◽  
Practical Applications ◽  
Detection Frequency

Although dragonflies are excellent environmental indicators for monitoring terrestrial water ecosystems, automatic monitoring techniques using digital tools are limited. We designed a novel camera trapping system with an original dragonfly detector based on the hypothesis that perching dragonflies can be automatically detected using inexpensive and energy-saving photosensors built in a perch-like structure. A trial version of the camera trap was developed and evaluated in a case study targeting red dragonflies (Sympetrum spp.) in Japan. During an approximately 2-month period, the detector successfully detected Sympetrum dragonflies while using extremely low power consumption (less than 5 mW). Furthermore, a short-term field experiment using time-lapse cameras for validation at three locations indicated that the detection accuracy was sufficient for practical applications. The frequency of false positive detection ranged from 17 to 51 over an approximately 2-day period. The detection sensitivities were 0.67 and 1.0 at two locations, where a time-lapse camera confirmed that Sympetrum dragonflies perched on the trap more than once. However, the correspondence between the detection frequency by the camera trap and the abundance of Sympetrum dragonflies determined by field observations conducted in parallel was low when the dragonfly density was relatively high. Despite the potential for improvements in our camera trap and its application to the quantitative monitoring of dragonflies, the low cost and low power consumption of the detector make it a promising tool.

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