Radio telemetry type seismic exploration system

摘要

PROBLEM TO BE SOLVED: To reduce the transmitted power by providing a relay device in each line of a plurality of lines of geophones capable of radio communication between adjacent geophones, and successively receiving the observed value from each geophone to a central recording device through the adjacent device and the relay device. SOLUTION: Observations are ended in geophones 1A-1G, 2A-2G (collectively referred to as A-G every line), and the observed values are transmitted and received in a preset procedure. The geophone A transmits the own observed value to corresponding relay devices 21, 22 in a period T1, and the geophone B transmits the own observed value to the geophone A in the following period T2. The geophone C transmits the own observed value to the geophone B in a period T3, and the geophone A transmits the observed value received from the geophone B to the relay devices 21, 22. The transmission and receipt between adjacent devices are repeated in the same manner, the geophone G transmits the own observed value to the geophone F in a period T7, and this observed value arrives at the relay devices 21, 22 in a period T13. Thus, since the communication is mainly performed between the adjacent geophones A-G, the transmitted output can be reduced.