초록 ▼

A method and apparatus for seismic geophysical exploration is disclosed wherein the seismic exploration system includes a seismic energy source, a central recording and control station, a plurality of geophones, and a plurality of remote geophone monitoring means. The central control and recording s

A method and apparatus for seismic geophysical exploration is disclosed wherein the seismic exploration system includes a seismic energy source, a central recording and control station, a plurality of geophones, and a plurality of remote geophone monitoring means. The central control and recording station is coupled to the plurality of geophone monitoring means by a two-way radio frequency (RF) link. The central recording and control station interrogates the plurality of geophone monitoring means by means of the two-way RF line to thereby determine the operating status of the plurality of geophone monitoring means. The operational status of the plurality of geophone monitoring means is transmitted from each of the plurality of geophone monitoring means via the two-way RF link to the central recording and control station in response to a specific address for each of the plurality of remote geophone monitoring means. After it has been determined that the plurality of remote geophone monitoring means are operational, the central recording and control station initiates operation of the seismic energy source. The reflected energy imparted into the earth by the seismic energy source is detected by the plurality of geophones. Apparatus contained within the remote monitoring means, associated with particular geophones, samples the signals detected by the geophones and produces representative data in digital form. The digitized data is stored in a memory contained within the geophone monitoring means and is transmitted on demand to the central recording and control unit. Error detection and retransmission of data from the remote geophone monitoring means to the central recording and control station is utilized to increase the reliability of data transmitted by means of the two-way RF link which couples the central recording and control station to the plurality of remote geophone monitoring means.

대표청구항 ▼

A seismic system for geophysical exploration comprising: a plurality of remote geophone monitoring means, each of said remote geophone monitoring means being adapted to receive electrical signals from at least one geophone means; and a central control means for generating electrical signals for init

A seismic system for geophysical exploration comprising: a plurality of remote geophone monitoring means, each of said remote geophone monitoring means being adapted to receive electrical signals from at least one geophone means; and a central control means for generating electrical signals for initiating the operation of said plurality of remote geophone monitoring means; each of said plurality of remote geophone monitoring means comprising: means for sampling electrical signals, provided from at least one geophone means, and for converting the sampled electrical signals into digital seismic data; a first data storage means; means for providing said digital seismic data to said first data storage means to therein store said digital seismic data; a first radio frequency transmitter means for transmitting said digital seismic data to said central control means in response to a transmit command from said central control means; means for providing said digital seismic data from said first storage means to said first radio frequency transmitter means; and a first radio frequency receiver means for receiving a command from said central control means; said central control means comprising: a second radio frequency transmitter means for transmitting commands to said plurality of remote geophone monitoring means; a second radio frequency receiver means for receiving digital seismic data from said plurality of remote geophone monitoring means; error detection means; means for providing digital seismic data from said second radio frequency receiver means to said error detection means; a second data storage means; and means for providing digital seismic data from said error detection means to said second data storage means to therein store the digital seismic data provided from said error detection means, wherein each of said remote geophone monitoring means additionally comprises: means for conducting a self test in response to a test command from said central control means; and means for providing test data, representative of the results of said self test, to said first radio frequency transmitter means to thereby transmit said test data to said central control means.