Digital 3D vibration sensing module
01 May 2018-pp 1-6
TL;DR: The experimental results have proved that 125 samples per second can be taken and indicate the 3D vibration sensing module has the advantages of low cost, high sensitivity and good vibration effect which are suitable for the applications in instrument and environmental vibration monitoring.
Abstract: Vibration sensing technology is a fundamental issue in smart machine and environmental vibration monitoring, etc. In this paper, we propose a digital 3D vibration sensing module using electronic resonator, three mechanical spring-switches, embedded microprocessor unit (MCU) and the algorithm of frequency to event. It explains their basic design, how they work. The prototype of digital 3D vibration sensing module has been experimented. The experimental results have proved that 125 samples per second can be taken. These indicate the 3D vibration sensing module has the advantages of low cost, high sensitivity and good vibration effect which are suitable for the applications in instrument and environmental vibration monitoring.
Citations
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26 Dec 2019
TL;DR: In this article, a system based on Arduino Uno board equipped with microcontroller ATmega328p which processes the environmental signals obtained from vibration and fire sensors was designed and developed to remotely monitor the status of earthquake or fire, and initiate safety measures to reduce damage.
Abstract: This research project is focused on designing and developing a system that can remotely monitor the status of earthquake or fire, and initiate safety measures to reduce damage. The persons residing in a building can be alerted with the alarm and electric power cut. With timely in-house and remote detection of earthquake or fire, location of ignition and automatic isolation of electric line upon detection of fire, lives can be saved and external help can be sent effectively. The system is based on Arduino Uno board equipped with Microcontroller ATmega328p which processes the environmental signals obtained from vibration and fire sensors. The processed signal is then uploaded to Adafruit.io website via ESP8266 Wireless Fidelity (Wi-Fi) module. In the event of an earthquake and fire, Arduino Uno board switches off the relay and isolates the main electric line to eliminate the risk of fire and electric damage.
References
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01 Jan 2007
TL;DR: Gonzalez et al. as mentioned in this paper provide a broad overview of the principles and practice of oscillator circuit design and emphasize the use of time-saving CAD simulation techniques. But their focus is on the complete frequency range, from low-frequency audio oscillators to more complex oscillators found at the RF and microwave frequencies.
Abstract: Offering broader coverage than other oscillator design books on the market, this comprehensive resource considers the complete frequency range, from low-frequency audio oscillators to more complex oscillators found at the RF and microwave frequencies. Packed with over 1,200 equations, the book gives you a thorough understanding of the principles and practice of oscillator circuit design and emphasizes the use of time-saving CAD simulation techniques. From the theory and characteristics of oscillators, to the design of a wide variety of oscillators (including tuned-circuit, crystal, negative-resistance, and relaxation oscillators), this unique book is the one-stop reference you'll turn to again and again when working on your challenging projects in this field. Supplementary Material: For the errata of this book please visit www.artechhouse.com/static/downloads/gonzalez_errata.doc
138 citations
"Digital 3D vibration sensing module..." refers methods in this paper
...The oscillator has many types of oscillator such as LC oscillator, RC oscillator, crystal oscillator RC, relaxation oscillator, Scan oscillator, etc[10-15]....
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Book•
13 Dec 2004
TL;DR: The history of the Op Amp and its applications has changed over the years, from simple Op Amps to systems that revolutionised the way that amplifiers were constructed and used to communicate with each other.
Abstract: Foreword Preface Acknowledgments Op Amp History Highlights Chapter 1: Op Amp Basics Chapter 2: Specialty Amplifiers Chapter 3: Using Op Amps with Data Converters Chapter 4: Sensor Signal Conditioning Chapter 5: Analog Filters Chapter 6: Signal Amplifiers Chapter 7: Hardware and Housekeeping Techniques Chapter 8: Op Amp History Index
126 citations
"Digital 3D vibration sensing module..." refers methods in this paper
...The oscillator has many types of oscillator such as LC oscillator, RC oscillator, crystal oscillator RC, relaxation oscillator, Scan oscillator, etc[10-15]....
[...]
TL;DR: This paper shows that the standard genetic algorithm, though able to solve small problems, performed poorly for large networks, and defines special crossover and mutation operations, such that the members of the population always remain valid solutions of the problem.
Abstract: The problem of finding an optimum conflict-free transmission schedule for a broadcast packet radio network (PRNET) is NP-complete. In addition to a host of heuristic algorithms, recently, neural network and simulated annealing approaches to solve this problem were reported. We show that the standard genetic algorithm, though able to solve small problems, performed poorly for large networks. This is because classical crossover and mutation operations create invalid members, which flood the whole population, hindering the progress of the search for valid solutions. In this paper, special crossover and mutation operations are defined, such that the members of the population always remain valid solutions of the problem. Excellent results were obtained in a few generations, even for very large networks with 400 nodes. The results were compared with recently reported neural network and mean field annealing approaches.
66 citations
"Digital 3D vibration sensing module..." refers methods in this paper
...Whenever the TDMA signal transmission unit of MCU wants data, the 3D digital vibration sensing module will pour all the data in the FIFO to the time division multiple access (TDMA) signal transmission unit of MCU at a time[17]....
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TL;DR: In this article, the authors present an open access article under the CC BY-NC-ND (http://creativecommons.org/licenses/by-nc-nd/4.0/).
35 citations
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04 Dec 1996
29 citations
"Digital 3D vibration sensing module..." refers methods in this paper
...The oscillator has many types of oscillator such as LC oscillator, RC oscillator, crystal oscillator RC, relaxation oscillator, Scan oscillator, etc[10-15]....
[...]