SU1442956A1 - Method of multichannel registration of seismic vibrations at engineering and seismometric station - Google Patents

Abstract

The invention relates to seismometry and can be used to record seismic events on construction sites with strong earthwalks. The goal is to increase the reliability of recording seismic vibrations in a single time. In the case of autonomous recording of seismic vibrations, three-channel seismic reactions arrange an automatic central control point, to which signals from self-switching seismic stations are transmitted to activate recording on them. In the presence of two such signals, signals are transmitted from an automatic central control point to a forced start of unattached seismic stations and at a certain time interval a single time stamp on the storage media of all seismic stations of the engineering seismometric station. 1 il. (L

Description

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The invention relates to seismology and can be used to resist seismic events on construction sites with strong earthquakes causing new damage,

The aim of the invention is to increase the reliability of recording seismic oscillations in a single time. tO

The method of multichannel recording of seismic vibrations at an engineering seismometric station consists in recording seismic vibrations by three-channel seismic stations operating in a group when seismic start-up and time stamping are performed from an automatic central control point at which signals about seismic level are analyzed. 20 oscillations at specified points, at least two seismic stations tune to different levels of autonomous response, depending on the location of the seismic On the station and on the ground and at the automatic central control point, the signals on the autonomous recording time recording on these seismic stations are analyzed, if at least two switching signals are transmitted, the automatic central control signal is transmitted to the autonomous central control station. registration start time on all non-enabled seismic stations, and after 0.3-0.4 with a single one-time mark on their data carriers.

The drawing shows a structural diagram of an engineering seismometric station for performing the method.

The station contains three-channel seismic stations 1 and an automatic central control point 2. Track-channel seismic stations contain DZ starters 3, media 4 information and timer 5 times. The automatic central control center consists of an analyzing device 6, a control device 7 and a single mark - ,,. Chika 8 time. For the connection of an automatic central control station with seismic stations, control devices 9 are inserted into the latter, and on the day of the possibility of supplying a single time stamp jc two time-rate feed channels are used.

The engineering seismometric station operates in a pedaling manner.

Given a level of seismic effects for each seismic station, which provides for the possibility of self-starting, the starters of the 3 seismic stations 1 are triggered, and the starters of different seismic stations located at different points of the structure and the soil trigger non-simultaneous achievement of their thresholds. A different actuation level of the starters can be realized, for example, by selecting the appropriate resistance in the starter circuit. The starters of the seismic station are connected by lines of communication with the analyzing device 6, which is, for example, a circuit made of AND and OR elements of the automatic central control point 2. This analyzing device analyzes the signals received from the starters of the seismic station through control devices 9, made, for example, in the form of a relay, registration activation signals and, if there are two activation signals at its input, gives a command to control automation device 7 to generate control signals signal. This device can be implemented, for example, in the form of a relay. The control signal is transmitted via communication lines through control devices 9, which, for example, send this signal to the outputs of the starters of all seismic stations, and forcibly include registration. All seismic stations record oscillations on their data carriers 4, with time stamps from their markers 5 times of the seismic station being plotted on data carriers. These timers of different seismic stations work asynchronously among themselves. After approximately 0.3-0.4 s, the single timer 8 of the automatic central control center sends over the communication channels a single one-time time stamp to the information records of the seismic station. Such a timer can, for example, be implemented as a relay controlled by a signal from the delayed signal of the forced start signal, engineering seismometric. At the seismic station, such a signal may be transmitted, for example, to one channel of timestamps of the information carrier, while

from its own timer, similar tags can flow to another time stamp channel.

Claims (1)

Invention Formula A method of multichannel recording of seismic vibrations at an engineering seismometric station, consisting in recording seismic vibrations by a group of three-station ceiliCMO stations installed at specified points on their data carriers, when a signal about the inclusion of a group of seismic stations is given from an automatic central control center, exceeding a given seismic level oscillations, and from which a single time stamp is fed to the information carriers of all seismic stations, characterized in that increase the reliability of recording seismic vibrations in a single time; a preliminary analysis of seismic vibration levels is carried out on at least two seismic stations, beyond which registration is performed on them with their own time stamps, and these seismic stations are preset to different response levels depending on the location of them on the structure and the ground with a range of changing levels of 2-5 times, the inclusion of seismic stations is transmitted to the automatic central control point Alenia, which, if there are at least two signals, sends a signal to turn on the whole group of seismic stations, this includes the own timers of all seismic stations and after 0.3-0.4 s, serves one single time stamp to all the seismic stations.