Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Measuring magnetic intensity independent of speed in a succession of moving magnetic strips










Image Number 5 for United States Patent #4380734.

The magnetic intensity in a succession of strips (12) in an article (10) is measured by producing relative motion between the article (10) and a magnetic sensing head (23) to produce a succession of first voltage waveforms. Each such waveform has a shape substantially characterized by the positions of the poles (13 and 14) in a respective strip (12). Each incremental portion of the shape has an amplitude proportional to the magnetic intensity sensed along the surface of the strip (12) and to the instantaneous speed of the relative motion between the sensing head (23) and such surface. By coupling a generator (31) to the article (10), a second voltage waveform is produced having a shape for each strip, wherein each incremental portion has an amplitude proportional to an instantaneous speed equivalent to the speed producing the first voltage waveform for the respective strip (12). The first waveform of a strip (12) is fed into the numerator input "Z" of a dividing circuit (36) and, simultaneously therewith, the second waveform for the same strip (12) is fed into the denominator input "X1" of the same circuit (36). Advantageously, the circuit (36) has a processing speed sufficient to produce a third voltage waveform of a shape wherein each incremental portion is independent of the speed of the relative motion and is faithful in amplitude and position to the poles (13 and 14) in each respective strip (12).








 
 
  Recently Added Patents
Assemblies for identifying a power injectable access port
Method of distributing PCC rules among IP-connectivity access network (IP-CAN) bearers
Porous film sensor
Task allocation multiple nodes in a distributed computing system
Water dispersible polythiophenes made with polymeric acid colloids
Combined semiconductor rectifying device and the electric power converter using the same
Orally dispersible tablet
  Randomly Featured Patents
Self-test circuit and memory device incorporating it
Quick-connect chuck mechanism
Lens module with spacers
Method of forming polysilicon layer in semiconductor device
Control device for engine provided with electromagnetic driven intake valves and computer useable medium having computer readable program code for performing the control
Fixture for holding metals parts for bending or twist correction
Image processing system, method for processing image and computer readable medium
Voice coil motor effective resistance determination
Urethane resins
System and method for setting and executing breakpoints