Enhanced material detection and frequency sweep analysis of controlled substances via digital signal processing
A system for material detection and identification includes an interface configured to access a material database associating each of a plurality of materials with a resonance frequency and one or more transmission parameters; an RF transmitter configured to, for each material of at least a subset of the plurality of materials in the material database transmit into an environment an RF signal the resonance frequency for the material using the one or more transmission parameters; an RF receiver configured to receive a response signal from the environment; and a processor configured to analyze the response signal for resonance characteristics that indicate a presence of the material and identify the material to a user if the presence of the material is indicated by the resonance characteristics.
1. A method for material detection and identification, the method comprising:
accessing a material database associating each of a plurality of materials with a resonance frequency and one or more transmission parameters; and
for each material of at least a subset of the plurality of materials in the material database:
transmitting into an environment an RF signal the resonance frequency for the material using the one or more transmission parameters;
receiving a response signal from the environment;
analyzing the response signal for resonance characteristics that indicate a presence of the material; and
identifying the material to a user if the presence of the material is indicated by the resonance characteristics.
2. The method of claim 1 , wherein the one or more transmission parameters include pulse sequence parameters.
3. The method of claim 2 , wherein the pulse sequence parameters include one or more of a pulse duration, a pulse interval, and a pulse count.
4. The method of claim 2 , wherein analyzing the response signal includes determining if the response signal is received between each pulse sequence.
5. The method of claim 1 , wherein the one or more transmission parameters include one or more of a power level and an amplitude.
6. The method of claim 5 , wherein transmitting includes transmitting into the environment the RF signal the resonance frequency at varying power levels and/or amplitudes.
7. The method of claim 5 , wherein the material database includes one or more pre-calibrated response curves relating transmitted power levels to received response signal strengths for known quantities and/or distances of the materials;
wherein analyzing includes determining a quantity and/or distance of the material based on the one or more pre-calibrated response curves.
8. The method of claim 1 , wherein the one or more transmission parameters include a frequency range for the material, wherein the resonance frequency is contained within the frequency range, and wherein transmitting includes transmitting into the environment a plurality of RF signals within the frequency range for the material.
9. The method of claim 8 , wherein the resonance frequency is centered within the frequency range.
10. The method of claim 1 , wherein the material is a controlled substance.
11. A system for material detection and identification, the system comprising:
an interface configured to access a material database associating each of a plurality of materials with a resonance frequency and one or more transmission parameters; and
an RF transmitter configured to, for each material of at least a subset of the plurality of materials in the material database transmit into an environment an RF signal the resonance frequency for the material using the one or more transmission parameters;
an RF receiver configured to receive a response signal from the environment;
a processor configured to analyze the response signal for resonance characteristics that indicate a presence of the material and identify the material to a user if the presence of the material is indicated by the resonance characteristics.
12. The system of claim 11 , wherein the one or more transmission parameters include pulse sequence parameters.
13. The system of claim 12 , wherein the pulse sequence parameters include one or more of a pulse duration, a pulse interval, and a pulse count.
14. The system of claim 12 , wherein analyzing the response signal includes determining if the response signal is received between each pulse sequence.
15. The system of claim 11 , wherein the one or more transmission parameters include one or more of a power level and an amplitude.
16. The system of claim 15 , wherein transmitting includes transmitting into the environment the RF signal the resonance frequency at varying power levels and/or amplitudes.
17. The system of claim 15 , wherein the material database includes one or more pre-calibrated response curves relating transmitted power levels to received response signal strengths for known quantities and/or distances of the materials;
wherein analyzing includes determining a quantity and/or distance of the material based on the one or more pre-calibrated response curves.
18. The system of claim 11 , wherein the one or more transmission parameters include a frequency range for the material, wherein the resonance frequency is contained within the frequency range, and wherein transmitting includes transmitting into the environment a plurality of RF signals within the frequency range for the material.
19. The system of claim 18 , wherein the resonance frequency is centered within the frequency range.
20. The system of claim 11 , wherein the material is a controlled substance.