Moling apparatus and a ground sensing system therefor

Details Moling apparatus and a ground sensing system therefor Moling apparatus and a ground sensing system therefor

E - Fixed Constructions

21

B

E21B 7/24 (2006.01) E21B 49/00 (2006.01) E21B 41/00 (2006.01)

Patent

CA 2251688

The invention provides a ground sensing system (10) comprising: sensing means (19) located, in use, on a projectile being driven through ground by means of apparatus having a self adjustment between a vibration mode and a vibro-impact mode according to encountered ground resistance, the sensing means sensing the dynamic resistance of the ground that the projectile is passing through; signal processing means for processing the output of said sensing means to provide a dynamic resistance waveform (106); and waveform recognition means (108) for correlating said dynamic resistance waveform with stored dynamic waveforms for identifying a ground characteristic. The waveform recognition means may comprise a neural network system.

Système (10) de détection du sol comprenant: un dispositif (19) de détection situé en utilisation sur un projectile envoyé dans le sol par un appareil possèdant un réglage automatique entre un mode vibratoire et un mode à vibro-percussion selon la résistance rencontrée dans le sol, le dispositif de détection détectant la résistance dynamique du sol que le projectile traverse; un dispositif de traitement du signal qui traite la sortie du dispositif de détection pour produire une onde (106) de résistance dynamique; et un dispositif (108) de reconnaissance d'ondes qui effectue une corrélation entre ladite onde de résistance dynamique et des ondes dynamiques stockées en mémoire pour identifier une caractéristique du sol. Le dispositif de reconnaissance d'ondes peut comprendre un système de réseau neuronal.

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