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
Solid state lighting devices and associated methods of manufacturing
Control method and allocation structure for flash memory device
Image forming apparatus and warming up method thereof
Credit flow control scheme in a router with flexible link widths utilizing minimal storage
Toy ball
Method and apparatus for blind signal extraction
Plants and seeds of hybrid corn variety CH514730
  Randomly Featured Patents
Clip gasket termination
Nano-scale nitride-particle-strengthened high-temperature wrought ferritic and martensitic steels
Hanging mobile greeting card
Device with needle penetrable and laser resealable portion and related method
Driving method of optical modulator, and optical transmitter and optical transmission system using same
Parallel connected power supplies having parallel connected control circuits which equalize output currents to a load even after one supply is turned off
Pseudomonas exotoxin A-like chimeric immunogens
Surgical system console
Catalytic combustion surfaces and method for creating catalytic combustion surfaces
DTMF lockout utility using epoch time stamp