On-site early-warning system for bishkek (Kyrgyzstan)

<p>In this work, the development of an on-site early warning system for Bishkek (Kyrgyzstan) is outlined. Several low cost sensors equipped with MEMS accelerometers are installed in eight buildings distributed within the urban area. The different sensing units communicate each other via wireless links and the seismic data are streamed in real-time to the data center using internet. Since each single sensing unit has computing capabilities, software for data processing can be installed to perform decentralized actions. In particular, each sensing unit can perform event detection task and run software for on-site early warning. If a description for the vulnerability of the building is uploaded in the sensing unit, this piece of information can be exploited to introduce the expected probability of damage in the early-warning protocol customized for a specific structure.</p

Earthquake early warning systems based on low-cost ground motion sensors: A systematic literature review

(c) The Author/sfals

Seismic signal acquisition device

Este artículo presenta el diseño y desarrollo de un dispositivo capaz de detectar señales que permitan afirmar cuando sucede el fenómeno natural sismo por medio de la escala de Mercalli Modificada (MMI); el sistema cuenta con una tarjeta de adquisición principal a la cual van añadidos varios sensores que se encargan de recolectar la información y otros de transmitirla, este dispositivo fue caracterizado en una carcasa de material ABS, se hicieron las pruebas con una estabilidad fija y en movimiento para escalar los datos y su publicación en un servidor web. En primer momento, se hace una revisión de estado del arte, para implementar un sistema de adquisición de señales sísmicas, con almacenamiento, comunicación y soporte de energía evaluando así, el desempeño de los parámetros enmarcados en la propuesta doctoral titulada “Sistema de gestión de alertas para predicción y detección de sismos”, en la que se necesita un dispositivo que almacene y envíe los datos detectados de las señales y su ubicación a un servidor en el cual serán tratados de acuerdo a sus objetivos posteriores.This article presents the design and development of a device capable of detecting signals that can be affirmed when the natural phenomenon occurs by means of the scale of Mercalli; the system has a main purchase card to which are added several sensors that are in charge of collecting the information and others to transmit it, this device was characterized in a case of material ABS, tests were performed with a fixed and moving stability to scale the data and its publication on a web server. At first, a state of the art review is performed, to implement a system of seismic signal acquisition, with storage, communication and energy support thus evaluating, the performance of the parameters framed in the doctoral project proposal "Warning management system for prediction and detection of earthquakes", who needs a device that stores and sends the detected signal data and its location to a server where they will be treated according to their later targets

Design and Implementation of an Arduino-Based Plug-and-Play Acquisition System for Seismic Noise Measurements

The analysis of seismic noise provides a reliable estimation of the soil properties, which supposes the starting point for the assessment of the seismic hazard. The horizontal-to-vertical spectral ratio technique calculates the resonant frequency of the soil just by using a single three-component sensor. Array measurements require at least several vertical sensors registering simultaneously and their analysis provides an estimation of the surface waves dispersion curve. Although these methods are relatively cheaper than other geotechnical techniques, the cost of the sensors and the multi-channel data acquisition system means that small research groups cannot afford this kind of equipment. In this work, two prototypes for registering seismic noise have been developed and implemented: a three-channel acquisition system, optimized for working with three-component sensors; and a twelve-channel acquisition system, prepared for working simultaneously with twelve vertical geophones. Both prototypes are characterized by being open-hardware, open-software, easy to implement, and low-cost. The main aim is to provide a data acquisition system that can be reproduced and applied by any research group. Both developed prototypes have been tested and compared with other commercial equipment, showing their suitability to register seismic noise and to estimate the soil characteristics.This research was funded by the Ministerio de Economia, Industria y Competitividad (grant number CGL2016-77688-R AEI/FEDER, UE); Spanish MINECO and European funds under project EPILATES (grant number CGL2015.65602-R); and Regional Government of Comunidad Valenciana (Spain) (grant number AICO/2016/098)