Sensor systems and methods for quantification of physical parameters, chemical and biochemical volatile and nonvolatile compounds in fluids
View Patent ↗A system and method employing optical disc drives for quantitative analysis of physical, chemical and biochemical parameters are provided. The system including a disc drive for supporting and rotating an optical disc including at least one sensor spot; a light source for directing light onto the sensor spot; at least one optical pickup for detecting light transmitted from the sensor spot, the transmitted light being indicative of a concentration of a compound; and an analog-to-digital converter for quantifying an intensity of the transmitted light. The method comprising the steps of preparing the optical disc with a plurality of sensor spots, the sensor spots being responsive to a compound; exposing the optical disc to a fluid; measuring intensity of transmitted light from at least one of the plurality of sensor spots; and correlating the measured intensity of transmitted light to an amount of compound exposed to the optical disc.
1. A system for quantifying compounds in fluids, gases, vapors, and solids, the system comprising:
a disc drive for supporting and rotating an optical disc, said optical disc including a highly reproducible sensor array for producing a prerecorded standard response, said sensor array including a plurality of sensor spots, each sensor spot being responsive to a compound;
a light source for directing light onto at least one sensor spot;
at least one optical pickup for detecting light transmitted through the at least one sensor spot, the transmitted light being indicative of a concentration of a compound; and
an analog-to-digital converter for quantifying an intensity of the transmitted light.
2. The system as in claim 1 , wherein the optical disc includes digital data, and the system further comprises a digital-to-analog converter for reading the digital data from the at least one optical pickup.
3. The system of claim 2 , wherein the digital data includes information on a location of the at least one sensor spot.
4. The system as in claim 1 , further comprising a filter coupled between the at least one optical pickup and the analog-to-digital converter for filtering noise.
5. The system as in claim 1 , further comprising a processor for comparing measured intensity of the transmitted light to the prerecorded standard response.
6. The system as in claim 1 , further comprising a memory for storing a prerecorded standard response and a processor for comparing measured intensity of the transmitted light to the prerecorded standard response.
7. The system as in claim 1 , further comprising a vapor induction port for inducing vapor across the optical disc while being supported by the disc drive.
8. The system as in claim 1 , further comprising a heater for heating the at least one sensor spot on the optical disc.
9. The system as in claim 2 , wherein the optical disc further comprises a triggering mark for determining a location of the at least one sensor spot independent of the digital data.
10. The system. as in claim 2 , wherein the optical disc further comprises a triggering mark for determining a location of the at least one sensor spot independent of the digital data, where the trigger mark serves simultaneously as an internal reference for providing information about at least one state of the optical disc.
11. The system as in claim 1 , wherein the optical disc further comprises a sensor spot pattern for determining a location of the at least one sensor spot independent of the digital data.
12. The system as in claim 1 , further comprising a processor for performing precision-improvement analysis on the measured intensity of the transmitted light, wherein the precision-improvement analysis includes summing, averaging, Fourier filtering or Savitsky-Golay filtering of multiple readings of the intensity of the transmitted light.
13. The system as in claim 1 , wherein each of said plurality of sensor spots is responsive to a different compound.