Methods and articles for identifying objects using encapsulated perfluorocarbon tracers
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
G01N-007/00
B05B-009/04
B05B-001/30
G01N-033/00
G01N-023/00
출원번호
US-0980405
(2015-12-28)
등록번호
US-9910020
(2018-03-06)
발명자
/ 주소
Fraser, Jay
출원인 / 주소
Copilot Ventures Fund III LLC
대리인 / 주소
Hoffberg, Steven M.
인용정보
피인용 횟수 :
0인용 특허 :
109
초록▼
A system and method for tagging, tracking, locating and identifying people and vehicles transporting people using Perfluorocarbon tracers. An on-going problem faced by military as well as law enforcement personnel is that of friendly fire incidents. To prevent possible friendly-fire incidents, troop
A system and method for tagging, tracking, locating and identifying people and vehicles transporting people using Perfluorocarbon tracers. An on-going problem faced by military as well as law enforcement personnel is that of friendly fire incidents. To prevent possible friendly-fire incidents, troops would separate the two layers of the uniform patch, thereby releasing a controlled release of the Perfluorocarbon vapors. Other “friendly” troops, equipped with sensors tuned to the specific perfluorocarbon characteristics would thus be able to literally view a plume around the tagged person or object. The system may conversely be used to tag enemies. Formulations of mixed perfluorocarbons may be used to provide coding of emissions.
대표청구항▼
1. A tracer release device, comprising: a reservoir containing a volatile tracer having at least one —CF2—CF2— portion;a releasable barrier configured to prevent release of the volatile tracer prior to release of the barrier;an electronic controller configured to produce a variable signal to control
1. A tracer release device, comprising: a reservoir containing a volatile tracer having at least one —CF2—CF2— portion;a releasable barrier configured to prevent release of the volatile tracer prior to release of the barrier;an electronic controller configured to produce a variable signal to control a release rate of the volatile tracer after release of the barrier;a volatile tracer release control device, selected from the group consisting of a microelectromechanical device, a bubble jet device, and a piezoelectric device, configured to release the volatile tracer selectively dependent on the variable signal; anda battery, configured to provide power to the electronic controller and the volatile tracer release control device. 2. The tracer release device according to claim 1, wherein the reservoir comprises a non-volatile matrix saturated with the volatile tracer. 3. The tracer release device according to claim 1, wherein the volatile tracer is encapsulated, such that the matrix remains saturated with volatile tracer, with the encapsulated volatile tracer acting as a reservoir to replenish volatile tracer which is lost from a surface of the matrix, to provide a steady state release of volatile tracer dependent principally on a rate of loss of volatile tracer from the matrix. 4. The tracer release device according to claim 1, wherein the volatile tracer release control device comprises a physical volatile tracer-impermeable barrier to prevent loss of volatile tracer in at least one state of the variable signal. 5. The tracer release device according to claim 1, wherein the at least one volatile tracer having at least one —CF2—CF2— portion comprises a plurality of different perfluorinated tracer compositions, each having a unique characteristic. 6. The tracer release device according to claim 1, wherein the volatile tracer release control device is configured to actively control a rate of volatile tracer release over time. 7. The tracer release device according to claim 1, wherein the volatile tracer is stored within a polymer matrix comprising a polyphosphazene derivative. 8. The tracer release device according to claim 7, wherein the polyphosphazene derivative comprises a polymer of perfluorocarbon-functionalized phosphazene monomers. 9. The tracer release device according to claim 1, wherein the volatile tracer is encapsulated in a cyclodextrin shell. 10. The tracer release device according to claim 1, wherein the electronic controller is configured control the release rate in dependence on a remote control signal received from a remote source. 11. The tracer release device according to claim 1, wherein the volatile tracer is selected from one or more of the group consisting of: perfluorodimethylcyclobutane (PDCB),perfuoromethylcyclohexane (PMCH),perfluorodimethylcyclohexane (PDCH);hexafluorobenzene (HFB),octafluorotoluene (OFT),decafluorobiphenyl (DFBP),decafluoroxylene (DFX),octafluoronaphthalene (OFN),pentafluoropyridene (PFP),perfluorohexane (PFH),perfluoropentane (PFPT),perfluorooctane (PFO),decafluorocyclohexene (DFCH),octafluorocyclopentene (OFCP),pf-methylcyclopentane (PMCP),pf-1,2-dimethylcyclohexane (o-PDCH),pf-1,3-dimethylcyclohexane (m-PDCH),pf-1,4-dimethylcyclohexane (p-PDCH),pf-trimethylcyclohexanes (PTCH),perfluorodecalin (Octadecafluorodecahydonaphthalene, PFD, CAS 306-94-5), andperfluoro(methyl)decalin (PFMD, CAS 306-92-3). 12. A tracer release device, comprising: A reservoir comprising a volatile tracer embedded within a polymer matrix;A removable barrier configured to prevent release of the volatile tracer prior to removal of the barrier;A remote control configured to receive a wireless signal from a remote source;An electronic controller configured to produce a control signal to control a temporally variable release rate of the volatile tracer after release of the barrier in dependence on at least the wireless signal; andA volatile tracer release control device, selected from the group consisting of a microelectromechanical device, a bubble jet device, and a piezoelectric device, configured to release the volatile tracer selectively dependent on the control signal. 13. The tracer release device according to claim 12, further comprising a battery, configured to provide power to remote control, the electronic controller, and the volatile tracer release control device. 14. The tracer release device according to claim 13, wherein the battery is activated by exposure to air, wherein removal of the barrier simultaneously activates the battery and permits release of the volatile tracer. 15. The tracer release device according to claim 12, wherein the electronic controller is further configured to produce the control signal dependent on a desired release rate of the volatile tracer received through the wireless signal. 16. The tracer release device according to claim 12, wherein the volatile tracer contained within the polymer matrix is encapsulated, and the capsules disposed in the polymer matrix, wherein the capsules replenish volatile tracer released from the polymer matrix to provide a steady state release rate. 17. The tracer release device according to claim 12, wherein the volatile tracer is contained within a polyphosphazine derivative matrix. 18. The tracer release device according to claim 12, wherein the volatile tracer is selected from one or more of the group consisting of: perfluorodimethylcyclobutane (PDCB),perfuoromethylcyclohexane (PMCH),perfluorodimethylcyclohexane (PDCH);hexafluorobenzene (HFB),octafluorotoluene (OFT),decafluorobiphenyl (DFBP),decafluoroxylene (DFX),octafluoronaphthalene (OFN),pentafluoropyridene (PFP),perfluorohexane (PFH),perfluoropentane (PFPT),perfluorooctane (PFO),decafluorocyclohexene (DFCH),octafluorocyclopentene (OFCP),pf-methylcyclopentane (PMCP),pf-1,2-dimethylcyclohexane (o-PDCH),pf-1,3-dimethylcyclohexane (m-PDCH),pf-1,4-dimethylcyclohexane (p-PDCH),pf-trimethylcyclohexanes (PTCH),perfluorodecalin (Octadecafluorodecahydonaphthalene, PFD, CAS 306-94-5), and perfluoro(methyl)decalin (PFMD, CAS 306-92-3). 19. A release device, comprising: A reservoir, containing a volatile compound embedded within a polymer matrix;A wireless receiver, configured to receive at least a remote control signal from a remote transmitter;An electronic controller configured to receive the remote control signal from the wireless receiver, and to produce a control signal to control a release rate of the volatile compound over time in dependence on a release profile;A volatile compound release control device, comprising a mechanism selected from the group consisting of a microelectromechanical device, a bubble jet device, and a piezoelectric device, configured to release the volatile compound, selectively dependent on the control signal; andA power supply configured to power the wireless receiver, the electronic controller, and the volatile compound release control device.
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