Method and Device for Crosstalk Compensation
AssigneeThermo Fisher Scientific (Bremen) GmbH
InventorsAlexander KHOLOMEEV, Gregor QUIRING, Frank CZEMPER
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Abstract
There is disclosed a method for eliminating an added crosstalk signal from a measured data signal, which is generated by an image current. There is further disclosed a signal processing unit for carrying out the method. There is still further disclosed a mass spectrometer and a mass analyser comprising the signal processing unit for carrying out the method. There is yet still further disclosed a Fourier transform mass spectrometer configured to eliminate the added crosstalk signal from a measured data signal.
Claims28
A method for eliminating an added crosstalk signal from a measured data signal generated by an image current, said method comprising the steps of:
- (a). extracting a decoupled disturbance signal from a source of electromagnetic disturbance that induces the added crosstalk signal;
- (b). conditioning the decoupled disturbance signal via a conditioning module by applying a phase shift and/or an amplitude amplification to obtain a compensation signal;
- and
- (c). providing the measured data signal and the compensation signal to an adding module, in which the measured data signal and the compensation signal are superposed,
- whereby the compensation signal is conditioned by the conditioning module in such a way that it essentially corresponds to an inverted signal of the added crosstalk signal.
A signal processing unit comprising:
- (a). at least one measured data signal input line adapted to receive a measured data signal generated by an image current, wherein the measured data signal comprises an added crosstalk signal induced by a source of electromagnetic disturbance;
- (b). at least one disturbance signal input line adapted to receive a decoupled disturbance signal, extracted from the source of electromagnetic disturbance by an extraction device;
- (c). an output line adapted to supply a compensated data signal to at least one data receiving device;
- (d). a conditioning module, to which the decoupled disturbance signal is supplied via the disturbance signal input line and which provides a compensation signal;
- and
- (e). an adding module, to which the measured data signal and the compensation signal are provided and in which the measured data signal and the compensation signal are superposed,
- whereby the decoupled disturbance signal is conditioned by the conditioning module in such a way that the compensation signal essentially corresponds to an inverted added crosstalk signal.
A Fourier transform mass spectrometer comprising:
- (a). a detector unit adapted to detect a measured data signal;
- and
- (b). a source of electromagnetic disturbance generating electromagnetic disturbance that interacts with the detector unit by crosstalk, resulting in the measured data signal comprising an added crosstalk signal;
- (c). an extraction device adapted to extract a decoupled disturbance signal from the source of electromagnetic disturbance;
- (d). a conditioning module adapted to condition the decoupled disturbance signal by applying a phase shift and/or an amplitude amplification to obtain a compensation signal and
- (e). an adding module, adapted to superpose the measured data signal and the compensation signal;
- whereby the compensation signal can be conditioned by the conditioning module in such a way that, in the adding module, it essentially corresponds to an inverted added crosstalk signal.
Dependencies are inferred from the claim text.