Non-thermal plasma generator for detection and treatment of maladies
A single non-thermal atmospheric plasma generation device is used to detect and analyze vital fields of a living subject to determine the presence of a condition, such as an illness or injury, and responsively modify characteristics of the plasma to treat, heal, or alleviate the condition. The device includes a capacitance dielectric discharge array of plasma emitters, and a controller having a power supply, a transformer, and circuit components for driving the transformer at a resonant frequency of the plasma emitters to cause the plurality of plasma emitters to ionize surrounding air and produce the non-thermal plasma. The resonant frequency is around 60 GHz and harmonics thereof. A receiver of the device recovers frequency mixing products from the plasma, which are extracted by signal processing circuitry; signals in the VHF and UHF bands are extracted and analyzed to determine whether signatures of particular vital fields are present.
1 . A non-thermal plasma generation device comprising:
a capacitance dielectric discharge array comprising a dielectric substrate and a plurality of electrically interconnected plasma emitters each comprising a first electrode and a second electrode; and
a controller electrically connectable to the array, the controller comprising:
a transformer that receives at a primary winding of the transformer a first signal having an electric current and generates sufficient AC voltage to cause the plurality of plasma emitters to ionize surrounding air and produce the non-thermal plasma; and
drive circuitry in electrical communication with the transformer, the drive circuitry configured to drive the transformer with a second signal having a frequency at a resonant frequency of about 60 GHz and multiples thereof when the transformer is applying the AC voltage to the array.
2 . The device of claim 1 , wherein in each of the plurality of plasma emitters, the corresponding first electrode comprises a metal ring and a plurality of metal projections spaced about a perimeter of the metal ring, each of the plurality of projections terminating in a corresponding sharp point that resonates at the resonant frequency to emit a plume of the non-thermal plasma.
3 . The device of claim 1 , wherein the dielectric substrate comprises a silica- or ceramic-loaded polymer to allow flexibility but resist plasma erosion.
4 . The device of claim 3 , wherein the polymer comprises polytetrafluoroethylene.
5 . The device of claim 1 , further comprising at least one coaxial cable electrically connecting the array to the controller.
6 . The device of claim 5 , wherein the controller further comprises one or more inductors electrically connected between the transformer and the at least one coaxial cable to reduce signal reflections on the at least one coaxial cable.
7 . The device of claim 1 , wherein the controller further comprises control circuitry electrically connected to the drive circuitry, the control circuitry modulating the non-thermal plasma at a plasma modulation frequency by controlling the drive circuitry to energize and de-energize the transformer at the plasma modulation frequency and with a duty cycle.
8 . The device of claim 7 , wherein the control circuitry modulates the non-thermal plasma by causing the drive circuitry to modulate a voltage on a primary winding of the transformer based on an arbitrary waveform instead of a fixed tone.
9 . The device of claim 7 , wherein the plasma modulation frequency corresponds to an application of the non-thermal plasma for therapeutic treatment of a specific physical condition.
10 . The device of claim 7 , wherein generation of the non-thermal plasma in proximity to a subject's skin causes reverse power in the array, and wherein the controller is configured to measure a signal in the reverse power and adjust the plasma modulation frequency to an optimum frequency in response to a measurement of the signal.
11 . The device of claim 10 , wherein the controller further comprises a user interface in electronic communication with the control circuitry, and wherein the measurement of the signal is used to provide feedback to a user of the device via the user interface.
12 . The device of claim 7 , wherein the controller further comprises signal processing circuitry in electronic communication with the control circuitry, the signal processing circuitry configured to detect radio signals, in the VHF and UHF frequency ranges, generated by interaction of the non-thermal plasma with a subject's body, the control circuitry receiving, from the signal processing circuitry, information associated with the radio signals and adjusting the modulation frequency based on the information.
13 . The device of claim 12 , wherein the control circuitry and the drive circuitry are integrated into an Application Specific Integrated Circuit (ASIC) along with the signal analysis circuitry and an associated Central Processing Unit (CPU) for real-time analysis of the radio signals.
14 . The device of claim 12 , wherein the controller comprises an Application Specific Integrated Circuit (ASIC) integrating the signal processing circuitry and an associated Central Processing Unit (CPU) for real-time analysis of the radio signals, and the control circuitry comprises a micro-controller that is separate from the ASIC.
15 . The device of claim 12 , wherein the controller further comprises a frequency synthesizer electrically connected to the signal processing circuitry, and wherein the signal processing circuitry, using a tuned output of the frequency synthesizer as a plasma frequency, mixes a harmonic of the plasma frequency with a secondary mixing product of O2 hyperfine resonances in the VHF or UHF range, the secondary mixing product being present in the radio signals, to generate an array current for analysis below the plasma modulation frequency.
16 . The device of claim 15 , wherein the signal processing circuitry and the control circuitry cooperate to analyze the array current for feedback and medical diagnostic purposes.
17 . The device of claim 7 , wherein the controller further comprises means for detecting excess array current and stopping the modulation of the electric current to the transformer when the excess array current is detected.
18 . The device of claim 7 , wherein the control circuitry is configured to monitor harmonics of current and voltage on the transformer secondary winding, and to use the harmonics to compute real time average power into the array.
19 . The device of claim 1 , further comprising a coaxial cable removably connected to the array and to the controller, and cooperating with the transformer and the array to form a wideband receiver that receives frequency mixing products produced by the plasma.
20 . The device of claim 19 , wherein the controller further comprises memory storing computer instructions and one or more microcontrollers, one or more application-specific integrated circuits (ASICs), or a combination of microcontrollers and ASICs, in electronic communication with the memory and cooperating to execute the computer instructions to:
sample, at a sampling rate corresponding to a first polarity of the plasma's discharge, an input from the wideband receiver to obtain an input signal;
process the input signal to extract the frequency mixing products;
amplify and digitize VHF and UHF signals in the frequency mixing products;
analyze the VHF and UHF signals to determine whether a signature corresponding to a vital field is present; and
responsive to determining that the signature is present, generate feedback associated with the vital field.