System and method for identifying passive optical identifier tags
One or more systems and methods for identifying one or more passive optical identifier tag from a plurality of passive optical identifier tags is provided. The method includes emitting light from a light source device. Further, the method includes transmitting, by said plurality of passive optical identifier tags, reflected light to a receiver. The method further includes reflecting, by the plurality of passive optical identifier tags, the emitted light with its unique set of wavelengths, said set of wavelengths being inferred by the corresponding reflection sequence.
1. A positioning system for identifying one or more passive optical identifier tag from a plurality of passive optical identifier tags, comprising:
a light source device configured to emit light towards the plurality of passive optical identifier tags, wherein the plurality of passive optical identifier tags is configured to transmit reflected light;
a receiver configured to receive the reflected light at pre-configured one or more wavelengths along with their respective power profiles;
a tunable laser device configured to transmit laser power at pre-configured one or more wavelengths; and
a processing system coupled with the receiver, the processing system configured to:
analyze the wavelengths and the respective power profiles of the light source, and
identify the position and identification of the one or more passive optical identifier tag from the plurality of passive optical identifier tags.
2. The positioning system as claimed in claim 1 , wherein the processing system comprising:
a memory;
a processor coupled to the memory; and
one or more modules, wherein said modules comprises an analyzer module and an identification module, and
wherein the analyzer module is configured to analyze the wavelengths and the respective power profiles of the light source; and
wherein the identification module is configured to identify the position and identification of the one or more passive optical identifier tag from the plurality of the passive optical identifier tags.
3. The positioning system as claimed in claim 1 , wherein the light source is installed at an appropriate location to emit the light towards the plurality of the passive optical identifier tags.
4. The positioning system as claimed in claim 1 , wherein the plurality of passive optical identifier tags are installed on targets.
5. The positioning system as claimed in claim 4 , wherein each of the plurality of passive optical identifier tags reflects a unique set of wavelengths.
6. The positioning system as claimed in claim 5 , wherein said unique set of wavelengths is inferred by the corresponding reflection sequence.
7. The positioning system as claimed in claim 6 , wherein the reflection sequence of the one or more passive optical identifier tag is a w-bit binary word, where w is number of wavelengths being used for the positioning.
8. The positioning system as claimed in claim 1 , wherein each of the plurality of passive optical identifier tags embodies passive reflectors.
9. The positioning system as claimed in claim 1 , wherein the receiver comprising:
an optical fiber to pass the laser power;
power splitters to divide and distribute the laser power;
an array of photodiodes to receive the reflected light and the laser power; and
an array of low pass filters to filter out high frequency components and feed output signals to the processor.
10. The positioning system as claimed in claim 9 , wherein each of the photodiodes active region is divided into a smaller active region and a larger active region.
11. The positioning system as claimed in claim 10 , wherein the smaller active region has pigtail connection to receive input from the optical fiber.
12. The positioning system as claimed in claim 11 , wherein the larger active region is configured to receive the reflected light.
13. The positioning system as claimed in claim 9 , wherein the optical fiber is connected to the tunable laser, the optical fiber being responsible to pass the laser power towards the array of photodiodes.
14. The positioning system as claimed in claim 9 , wherein the tunable laser is configured to be tuned in a cyclic and periodic manner to emit power to the array of photodiodes at pre-configured one or more wavelengths.
15. The positioning system as claimed in claim 9 , wherein the power splitters and the arrays of photodiodes are connected with each other by said optical fiber.
16. The positioning system as claimed in claim 15 , wherein the power splitters divide and distribute the laser power to the array of photodiodes.
17. The positioning system as claimed in claim 16 , wherein the array of photodiodes is configured to receive the laser power and the reflected light along with one or more pre-configured wavelengths.
18. The positioning system as claimed in claim 17 , wherein the array of photodiodes is configured to perform optical frequency beating among the frequencies present in the laser power and the received reflected light.
19. The positioning system as claimed in claim 18 , wherein the optical frequency beating is configured to produce frequency components and some DC components.
20. The positioning system as claimed in claim 19 , wherein the DC components as output signals of the array of the photodiodes are passed through the array of low pass filters.
21. The positioning system as claimed in claim 20 , wherein the array of low pass filters filter out the high frequency components and feed the output signals to the processor for analyzing the data to locate and identify the plurality of passive optical identifier tags.
22. The positioning system as claimed in claim 1 , wherein power peaks in the power profiles identify the position of the plurality of passive optical identifier tags.
23. The positioning system as claimed in claim 1 , wherein the step of identification process of the one or more passive optical identifier tag from the plurality of the passive optical identifier tags comprising:
generating, by said processor, the reflection sequence;
obtaining, by said processor, the reflection sequence, by said processor, by analysing the position of the passive optical identifier tag in different power profiles.
24. A method for identifying one or more passive optical identifier tag from a plurality of passive optical identifier tags, said method comprising:
emitting light from a light source device;
transmitting, by said plurality of passive optical identifier tags, reflected light to a receiver;
receiving, by the receiver, said reflected light at pre-configured one or more wavelengths along with their respective power profiles;
analysing, by analyzer module, the one or more wavelengths and the respective power profiles of the received said light source ( 130 ), and
identifying, by identification module, the position and identification of the one or more passive optical identifier tag from the plurality of passive optical identifier tags.
25. The method as claimed in claim 24 , wherein the emitting light from the light source being emitted towards the plurality of the passive optical identifier tags.
26. The method as claimed in claim 24 , wherein the transmitting reflected light from the passive optical identifier tags is transmitted to the receiver with the unique set of wavelengths.
27. The method as claimed in claim 26 , wherein the unique set of wavelengths being inferred by the corresponding reflection sequence.
28. The method as claimed in claim 27 , wherein the reflection sequence of the one or more passive optical identifier tag is a w-bit binary word, where w is the number of wavelengths being used for positioning.
29. The method as claimed in claim 24 , wherein the receiver comprises an array of photodiodes, wherein said photodiodes configured to receiving the reflected light and laser power.
30. The method as claimed in claim 29 , wherein the photodiodes are receiving the reflected light at the pre-configured one or more wavelengths along with their respective power profiles.