| 摘要 |
<p>The apparatus (11) has a support i.e. PVC tube, for supporting underground measurement units e.g. sensors and/or electrodes (E1, E2), where the electrodes are integrated to the support. Electric conductors extend between the units and an end of the tube. Switches e.g. closing relays (R1-R4) and a control relay (28), connect the measuring units to one of the conductors or an address bus (22) to successively examine the units from an end of the tube. A layer (23) of the conductors transports signals or measurement or address data, where the measurement units are connected to the conductors. Independent claims are also included for the following: (1) a method for surveying an underground medium (2) a program comprising a code fixed on a support e.g. memory, for monitoring physico-chemical parameters of underground medium (3) an underground surveying system, comprising an underground measurement apparatus.</p> |
