TY - JOUR
AU - Fricker, N
AB - A system is described which enables an analogue signal in the form of a trace from a chart recorder to be automatically digitized. The trace is first copied with electrically conducting ink and then fed through the charge recorder again. The pen is replaced by a metallic probe and a simple circuit constrains the probe to follow the trace as it is driven through the recorder. The voltage applied to the recorder input is monitored with a digital voltmeter which has punched tape read-out facilities, and sampled at equal time increments. The method requires only a small modification to the chart recorder, and is useful for digitizing old and perhaps unique records (geophysical data, for example, are of this type) as well as records whose quality is impaired by noise and spurious features. The method may also find application to digitization of records made on nonlinear chart recorders.
TI - An automatic chart follower using electrically conducting ink
JO - Journal of Physics E: Scientific Instruments
DO - 10.1088/0022-3735/5/4/002
DA - 1972-04-01
UR - https://www.deepdyve.com/lp/iop-publishing/an-automatic-chart-follower-using-electrically-conducting-ink-bec0ffnGNK
SP - 304
VL - 5
IS - 4
DP - DeepDyve
ER -