Title:
CURRENT DETECTION DEVICE AND SPECTROMETER USING THE SAME
Document Type and Number:
WIPO Patent Application WO/2019/017413
Kind Code:
A1
Abstract:
A device (400) of detecting a current (405) from a sensor (490) is disclosed. The device comprising: an integrating circuit (435) including a network of capacitors (430) for providing a gain setting and configured to convert the current to a voltage ramp over a length of integration time, the integrating circuit further including a reset switch (420) configured to connect an input and an output of the network of capacitors; an ADC (440) configured to digitize the voltage ramp into a plurality of voltage samples; and a set of modules (480) including an analyzing module (482) configured to analyze the plurality of voltage samples to determine a slope of the voltage ramp; an outputting module (488) configured to determine a magnitude of the current based on the slope of the voltage ramp and the gain setting; and a reconfiguring module (484) that is configured to reconfigure the network of capacitors and reset the voltage ramp via the reset switch.
Inventors:
PANDURANGAN ANAND (US)
SELVARAJ SIVA (US)
HEGDE ANOOP (US)
MURTHY PRAKASH SREEDHAR (JP)
SELVARAJ SIVA (US)
HEGDE ANOOP (US)
MURTHY PRAKASH SREEDHAR (JP)
Application Number:
PCT/JP2018/026999
Publication Date:
January 24, 2019
Filing Date:
July 19, 2018
Export Citation:
Assignee:
ATONARP INC (JP)
International Classes:
H01J49/06; G01N27/62
Domestic Patent References:
| WO2007118186A2 | 2007-10-18 | |||
| WO1996010164A1 | 1996-04-04 | |||
| WO2003019206A1 | 2003-03-06 |
Foreign References:
| JPH05264352A | 1993-10-12 |
Other References:
See also references of EP 3655988A4
Attorney, Agent or Firm:
IMAI, Akira (JP)
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