Pulse generator and systems and methods for using same

• US 10,240,979 B2
• Filed: 06/29/2015
• Issued: 03/26/2019
• Est. Priority Date: 07/13/2010
• Status: Active Grant

• Current Assignee: Rexifi, LLC
• Original Assignee: Cascodium Inc.
• Inventors: Cobler, Patrick J., Rhodes, Scott A., Butler, Paul D., Butler, Neal R., Dynok, Michael R.
• Primary Examiner(s): Smith, Maurice
• Application Number:
  US14/753,775
• Publication Number:
  US 20150300878A1
• Time in Patent Office: 1,366 Days
• CPC Class Codes: G01J 3/0291 Housings; Spectrometer accessories; Spatial arrangement of elements, e.g. folded path arrangements
• CPC Class Codes: G01J 3/10 Arrangements of light sources specially adapted for spectrometry or colorimetry
• CPC Class Codes: G01J 3/443 Emission spectrometry
• CPC Class Codes: G01N 21/67 using electric arcs or discharges
• CPC Class Codes: H01J 37/32055 Arc discharge
• CPC Class Codes: H05H 1/46 using applied electromagnetic fields, e.g. high frequency or microwave energy H05H1/26 takes precedence
• CPC Class Codes: H05H 2242/22 DC, AC or pulsed generators
• CPC Class Codes: H05K 9/0037 Housings with compartments containing a PCB, e.g. partitioning walls

Abstract

A pulse generator generates high voltage discharge pulses in a manner that may be controlled and monitored. Pulse generator operation may be monitored to measure characteristics associated with pulse generator operation and to produce pulse generator data representative of those characteristics. Pulse generator operation may be monitored by monitoring the discharge pulses produced by the pulse generator and/or the charging of energy storage elements within the pulse generator in preparation for a subsequent discharge pulse. The pulse generator data may be used, for example, to identify pulse generator wear or degradation, to identify problems with pulse generator operation, and/or to control pulse generator operation for improved performance. The pulse generator may also be configured and controlled to generate a high-voltage initiation pulse to initiate a subsequent discharge pulse while being contained within a relatively small form factor. The pulse generator may be used in spectroscopy systems or other systems using high voltage discharge pulses.

Claims

1. A spectroscopy system comprising:

discharge pulse circuitry configured to charge and discharge for generating electrical discharge pulses;

monitor circuitry configured to measure characteristics of pulse generator operation including characteristics quantifying the discharge pulses generated by the discharge pulse circuitry;

control circuitry configured to control charging and generation of the discharge pulses, to collect measurements from the monitor circuitry to produce pulse generator data representative of measured characteristics, and to report pulse generator data corresponding to individual discharge pulses on a pulse-by-pulse basis following initiation of the individual discharge pulses wherein the control circuitry is configured to adjust an operating parameter in response to the pulse generator data by increasing a pulse initiation control parameter in response to a calculated decrease in the probability of discharge pulse as represented by the pulse generator data;

electrodes coupled to the discharge pulse circuitry; and

a spectroscopy detector configured to measure and analyze spectroscopic emissions resulting from the electrical discharge pulses generated between the electrodes.

2. The spectroscopy system of claim 1 further comprising data processing circuitry configured to receive pulse generator data and to correlate spectroscopic emissions data with the pulse generator data that produced the emissions.

3. The spectroscopy system of claim 1 wherein the pulse generator data reported by the control circuitry includes data selected from the group consisting of a discharge pulse magnitude value, a discharge pulse duration value, a discharge pulse generation delay value relative to a trigger, and a tag value indicative of a non-compliant discharge pulse.

4. The spectroscopy system of claim 1 wherein the control circuitry is configured to report to an external user when values of the pulse generator data fall within or outside a predefined range.

5. The spectroscopy system of claim 1 wherein the control circuitry is configured to halt system operation in response to the pulse generator data.

6. The spectroscopy system of claim 1 wherein the control circuitry includes trigger generation circuitry configured to generate a trigger initiation signal, and wherein the discharge pulse circuitry is configured to generate a high-voltage initiation pulse in response to the trigger initiation signal and wherein the time delay between the trigger initiation signal and the high-voltage initiation pulse is on the same order of magnitude as a duration of the discharge pulse that is generated.

7. The spectroscopy system of claim 1 wherein the discharge pulse circuitry is configured to generate multiple discharge pulses following a single, high-voltage initiation pulse in response to a single trigger initiation signal from the control circuitry.

8. The spectroscopy system of claim 1 further comprising a housing forming at least a first EMI shielded chamber enclosing and isolating the input power and data connections.

9. The spectroscopy system of claim 8 wherein the housing forms at least a second EMI shielded chamber enclosing and isolating the control circuitry and wherein the control circuitry includes a digital processor.

10. The spectroscopy system of claim 1 wherein the discharge pulse circuitry includes a resonant transformer trigger circuit configured to drive a trigger transformer in response to a trigger initiation signal having a waveform to excite an energy storage resonance between the trigger transformer and a set of reactive electronic components coupled to the transformer to generate a high-voltage initiation pulse.

11. The spectroscopy system of claim 1 wherein the discharge pulse circuitry includes a transformer trigger circuit configured to charge and switch a trigger transformer in response to a trigger initiation signal to generate a high-voltage initiation pulse and wherein the high-voltage initiation pulse occurs after the trigger initiation signal is terminated.

12. The spectroscopy system of claim 11 wherein at least a subset of the pulse generator data represents a voltage amplitude of the high-voltage initiation pulse associated with the discharge pulse.