Cellular telephone-based radiation sensor and wide-area detection network
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
G01J-001/24
G01J-001/10
출원번호
US-0632169
(2003-07-30)
발명자
/ 주소
Craig,William W.
Labov,Simon E.
출원인 / 주소
The Regents of the University of California
인용정보
피인용 횟수 :
9인용 특허 :
8
초록▼
A network of radiation detection instruments, each having a small solid state radiation sensor module integrated into a cellular phone for providing radiation detection data and analysis directly to a user. The sensor module includes a solid-state crystal bonded to an ASIC readout providing a low co
A network of radiation detection instruments, each having a small solid state radiation sensor module integrated into a cellular phone for providing radiation detection data and analysis directly to a user. The sensor module includes a solid-state crystal bonded to an ASIC readout providing a low cost, low power, light weight compact instrument to detect and measure radiation energies in the local ambient radiation field. In particular, the photon energy, time of event, and location of the detection instrument at the time of detection is recorded for real time transmission to a central data collection/analysis system. The collected data from the entire network of radiation detection instruments are combined by intelligent correlation/analysis algorithms which map the background radiation and detect, identify and track radiation anomalies in the region.
대표청구항▼
We claim: 1. A radiation sensor module comprising: a radiation detector made of a room temperature-operable, solid state semiconductor detection material capable of detecting gamma-ray photons and/or neutrons, and pixelated into a plurality of small pixel effect type pixels wherein pixels located i
We claim: 1. A radiation sensor module comprising: a radiation detector made of a room temperature-operable, solid state semiconductor detection material capable of detecting gamma-ray photons and/or neutrons, and pixelated into a plurality of small pixel effect type pixels wherein pixels located in regions of the detection material having imperfections are individually disabled to enhance detector performance and high spectral resolution; a temperature sensor capable of measuring the temperature of said detection material; and means for adjusting the overall gain of the detection material as a function of time based on the temperature measured by said temperature sensor, to improve spectral resolution of said radiation detector. 2. The radiation sensor module of claim 1, further comprising a readout having a plurality of channels connected to the pixels for electronically processing detection data obtained therefrom. 3. The radiation sensor module as in claim 2, wherein the plurality of channels of said readout are connected only to the pixels in regions without imperfections. 4. The radiation sensor module as in claim 2, further comprising an interface board, and wherein the readout is an ASIC readout chip mounted on the interface board together with said radiation detector, with the ASIC readout chip and said radiation detector connected to each other by interconnects on the interface board. 5. The radiation sensor module as in claim 4, wherein said ASIC readout chip is a VLSI readout chip bonded to the pixels of said detection material. 6. The radiation sensor module as in claim 1, further comprising data processing means for excluding from analysis detection data obtained from the pixels in said regions having imperfections. 7. The radiation sensor module as in claim 6, wherein said data processing means includes means for setting a level of inclusion/exclusion in analysis of detection data obtained from the pixels in said regions with imperfections to provide either higher resolution or higher efficiency. 8. The radiation sensor module as in claim 1, wherein said radiation detection material is chosen from the group consisting of cadmium zinc telluride, cadmium telluride, mercuric iodide, lead iodide, and aluminum antimonide. 9. The radiation sensor module as in claim 1, wherein said radiation detection material is a commercial-grade material having low spectral resolution when operated as a single-crystal detector. 10. A radiation sensor module comprising: a radiation detector made of a room temperature-operable, solid state semiconductor detection material capable of detecting gamma-ray photons and/or neutrons, and pixelated into a plurality of small pixel effect type pixels wherein pixels located in regions of the detection material having imperfections are individually disabled to enhance detector performance and high spectral resolution; means for adjusting the gain of each pixel to correct variations in detection material properties across the pixels of the detection material to further enhance spectral resolution; and a temperature sensor capable of measuring the temperature of each of said plurality of pixels, wherein adjustments made by said means for adjusting the gain of each pixel are based on variations of the temperature across the pixels of said detection material determined by said temperature sensor. 11. A radiation detection system comprising: communications means for communicating over a communications network, said communications means including means for automatically transmitting the detection data without input from a user; and a radiation sensor module operably connected to said communications means for transmitting detection data over said communications network, said radiation sensor module including a radiation detector made of a room temperature-operable, solid state semiconductor detection material capable of detecting gamma-ray photons and/or neutrons, and pixelated into a plurality of small pixel effect type pixels wherein pixels located in regions of the detection material having imperfections are individually disabled to enhance detector performance and high spectral resolution. 12. The radiation detection system as in claim 11, wherein said communications means and said radiation sensor module are two separate modules. 13. The radiation detection system as in claim 12, wherein said communications means and said radiation sensor module are operably connected by wires. 14. The radiation detection system as in claim 12, wherein said communications means and said radiation sensor module are operably connected via a wireless link. 15. The radiation detection system as in claim 12, wherein said radiation sensor module is attachable to an object independent of said communications means. 16. The radiation detection system as in claim 11, wherein the automatic transmission of the detection data is in real time. 17. The radiation detection system as in claim 11, further comprising means for analyzing detection data obtained by said radiation sensor module. 18. The radiation detection system as in claim 11, further comprising means for displaying detection data obtained by said radiation sensor module. 19. The radiation detection system as in claim 11, wherein said communications means is a mobile wireless communications device. 20. The radiation detection system as in claim 11, wherein the radiation sensor module further comprises a readout having a plurality of channels connected to the pixels for electronically processing detection data obtained therefrom. 21. The radiation detection system as in claim 20, wherein the pixels located in said regions having imperfections are individually disabled by connecting the plurality of channels of said readout only to the pixels in regions without imperfections. 22. The radiation detection system as in claim 20, wherein the radiation sensor module further comprises an interface board, and wherein the readout is an ASIC readout chip mounted on the interface board together with said radiation detector, with the ASIC readout chip and said radiation detector connected to each other by interconnects on the interface board. 23. The radiation detection system as in claim 22, wherein said ASIC readout chip is a VLSI readout chip bonded to the pixels of said detection material. 24. The radiation detection system as in claim 11, wherein the radiation sensor module further comprises data processing means for excluding from analysis detection data obtained from the pixels in said regions having imperfections. 25. The radiation detection system as in claim 24, wherein said data processing means includes means for setting a level of inclusion/exclusion in analysis of detection data obtained from the pixels in said regions with imperfections to provide either higher resolution or higher efficiency. 26. The radiation detection system as in claim 11, wherein said radiation detection material is chosen from the group consisting of cadmium zinc telluride, cadmium telluride, mercuric iodide, lead iodide, and aluminum antimonide. 27. The radiation detection system as in claim 11, wherein said radiation detection material is a commercial-grade material having low spectral resolution when operated as a single-crystal detector. 28. A radiation detection system comprising: communications means for communicating over a communications network, said communications means including means for communicating with a data server of a central monitoring system over said communications network, for transmitting detection data to said data server; and a radiation sensor module operably connected to said communications means for transmitting detection data over said communications network, said radiation sensor module including a radiation detector made of a room temperature-operable, solid state semiconductor detection material capable of detecting gamma-ray photons and/or neutrons, and pixelated into a plurality of small pixel effect type pixels wherein pixels located in regions of the detection material having imperfections are individually disabled to enhance detector performance and high spectral resolution. 29. The radiation detection system as in claim 28, wherein said communications means includes means for automatically transmitting the detection data to the data server of said central monitoring system without input from a user. 30. The radiation detection system as in claim 29, wherein the automatic transmission of the detection data is in real time. 31. A radiation detection system comprising: communications means for communicating over a communications network; a radiation sensor module operably connected to said communications means for transmitting detection data over said communications network, said radiation sensor module including a radiation detector made of a room temperature-operable, solid state semiconductor detection material capable of detecting gamma-ray photons and/or neutrons, and pixelated into a plurality of small pixel effect type pixels wherein pixels located in regions of the detection material having imperfections are individually disabled to enhance detector performance and high spectral resolution; means for adjusting the gain of each pixel to correct variations in detection material properties across the pixels of the detection material to further enhance spectral resolution; and a temperature sensor capable of measuring the temperature of each of said plurality of pixels, wherein adjustments made by said means for adjusting the gain of each pixel are based on variations of the temperature across the pixels of said detection material determined by said temperature sensor. 32. A radiation detection system comprising: communications means for communicating over a communications network; a radiation sensor module operably connected to said communications means for transmitting detection data over said communications network, said radiation sensor module including a radiation detector made of a room temperature-operable, solid state semiconductor detection material capable of detecting gamma-ray photons and/or neutrons, and pixelated into a plurality of small pixel effect type pixels wherein pixels located in regions of the detection material having imperfections are individually disabled to enhance detector performance and high spectral resolution; a temperature sensor capable of measuring the temperature of said detection material; and means for adjusting the overall gain of the detection material as a function of time based on the temperature measured by said temperature sensor, to improve spectral resolution of said radiation detector. 33. A radiation sensor module comprising: a radiation detector made of a room temperature-operable, solid state semiconductor detection material capable of detecting gamma-ray photons and/or neutrons, and pixelated into a plurality of small pixel effect type pixels wherein pixels located in regions of the detection material having imperfections are individually disabled to enhance detector performance and high spectral resolution; and data processing means for excluding from analysis detection data obtained from the pixels in said regions having imperfections, said data processing means including means for setting a level of inclusion/exclusion in analysis of detection data obtained from the pixels in said regions with imperfections to provide either higher resolution or higher efficiency.
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