公开(公告)号：US11646190B2

公开(公告)日：2023-05-09

申请号：US17748408

申请日：2022-05-19

Applicant: ATONARP INC.

Inventor： Anand Pandurangan ,  Siva Selvaraj ,  Anoop Hegde ,  Prakash Sreedhar Murthy

IPC: H01J49/42 ,  H01J49/02 ,  H01J49/00 ,  A61B5/00

CPC classification number: H01J49/4215 ,  H01J49/0013 ,  H01J49/022 ,  A61B5/0075

Abstract: A device of detecting a current from a sensor is disclosed. The device includes an integrating circuit including a network of capacitors 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 configured to connect an input and an output of the network of capacitors; an ADC configured to digitize the voltage ramp into a plurality of voltage samples; and a set of modules including an analyzing module configured to analyze the plurality of voltage samples to determine a slope of the voltage ramp; an outputting module configured to determine a magnitude of the current based on the slope of the voltage ramp and the gain setting; and a reconfiguring module that is configured to reconfigure the network of capacitors and reset the voltage ramp via the reset switch.

公开(公告)号：US10224192B2

公开(公告)日：2019-03-05

申请号：US15656909

申请日：2017-07-21

Applicant: ATONARP INC.

Inventor： Anand Pandurangan ,  Siva Selvaraj ,  Anoop Hegde

IPC: H01J49/02 ,  H01J49/00 ,  H01J49/42 ,  H01J49/08

Abstract: Methods and circuits for detecting an ion current in a mass spectrometer are described. A circuit and a method may involve converting, over a length of integration time, the ion current to a voltage ramp by an integrating circuit having a gain setting. The circuit and the method may also involve determining a slope of the voltage ramp. The circuit and the method may also involve determining a magnitude of the ion current based on the slope of the voltage ramp and the gain setting. The circuit and the method may further involves determining an out-of-range state based on the voltage ramp and adjusting the gain setting of the integrating circuit, or the length of integration time or both, in response to the determining of the out-of-range state.

公开(公告)号：US11417509B2

公开(公告)日：2022-08-16

申请号：US16621356

申请日：2018-07-19

Applicant: ATONARP INC.

Inventor： Anand Pandurangan ,  Siva Selvaraj ,  Anoop Hegde ,  Prakash Sreedhar Murthy

IPC: H01J49/42 ,  H01J49/02 ,  A61B5/00 ,  H01J49/00

Abstract: A device of detecting a current from a sensor is disclosed. The device includes an integrating circuit including a network of capacitors 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 configured to connect an input and an output of the network of capacitors; an ADC configured to digitize the voltage ramp into a plurality of voltage samples; and a set of modules including an analyzing module configured to analyze the plurality of voltage samples to determine a slope of the voltage ramp; an outputting module configured to determine a magnitude of the current based on the slope of the voltage ramp and the gain setting; and a reconfiguring module that is configured to reconfigure the network of capacitors and reset the voltage ramp via the reset switch.

公开(公告)号：US20190027348A1

公开(公告)日：2019-01-24

申请号：US15656909

申请日：2017-07-21

Applicant: ATONARP INC.

Inventor： Anand Pandurangan ,  Siva Selvaraj ,  Anoop Hegde

IPC: H01J49/00 ,  H01J49/02 ,  H01J49/42 ,  H01J49/08

Abstract: Methods and circuits for detecting an ion current in a mass spectrometer are described. A circuit and a method may involve converting, over a length of integration time, the ion current to a voltage ramp by an integrating circuit having a gain setting. The circuit and the method may also involve determining a slope of the voltage ramp. The circuit and the method may also involve determining a magnitude of the ion current based on the slope of the voltage ramp and the gain setting. The circuit and the method may further involves determining an out-of-range state based on the voltage ramp and adjusting the gain setting of the integrating circuit, or the length of integration time or both, in response to the determining of the out-of-range state.