Resources Contact Us Home
System for acquiring and recording signals delivered by a set of sensors disposed in well probes

Image Number 3 for United States Patent #4901289.

A system is provided for acquiring and recording signals delivered by a set of sensors disposed in one or more probes lowered into a well at the end of a multi-function cable.The different signals to be transmitted are multiplexed before being applied to an acquisition chain adapted for amplifying them, digitizing them and coding them before applying them to a transmission channel in the form of blocks of digitized words. The multiplexing means may comprise several multiplexing units. The sampling frequency of each signal and the formation of the blocks of words are adapted to the number of units effectively used. In the surface installation, the blocks of words are dissociated and stored in a memory in a single mode suitable for all the blocks whatever their formation.

  Recently Added Patents
Collaborative image capture
Disk drive
Quantifying the risks of applications for mobile devices
Potentiometric-sensor chip, potentiometric assay, and assay kit
System and method for managing investment funds
Polynucleotide capture materials, and methods of using same
Electronic device with multi-orientation
  Randomly Featured Patents
Pharmaceutical preparation comprising a cardiac glycoside with a polymer coating
Detent UHF tuner with memory type independent fine tuning
Method of forming a silicon nitride article
Open transmission line intrusion detection system using frequency spectrum analysis
Water-soluble, sulfoalkyl-containing, hydrophobically modified cellulose ethers, process for preparing them, and their use as protective colloids in polymerizations
Electrokinetic micro power cell using pile-up disk type microfluidic-chip with multi-channel
Glitch detector and trap
Carton having novel opening features
Security device, method of manufacturing the same, and method of operating the same
Process and installation for the recovery of ammonia during the separation of nitrogen oxide from waste gases