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Landform monitoring system having pressure sensing devices
國家: 美國
專利類型: 發明
公告號: 7373828
申請案號: 11/706655
國際分類號: G01L 7/00
公告日期: 2008/5/20
申請日期: 2007/2/15
公報卷期: -
證書號:
專用期限: 2007/2/15 至 2027/2/15
發明人:
林詠彬   Chih-Chen Lee   Jihn-Sung Lai   Chun-Chung Chen   李路生   
摘要: A landform monitoring system includes a pressure sensing device mounted on a mounting frame, and including a housing unit configured with an accommodating space and having first and second openings in fluid communication with the accommodating space. A pressure sensor is attached to the housing unit, and seals the first opening. A flexible sheet is attached to the housing unit and seals the second opening. A fluid medium is filled fully in the accommodating space. When the sheet deforms as a result of an external pressure acting thereon, a pressure corresponding to the deformation of the sheet is transmitted to the pressure sensor via the fluid medium such that the pressure sensor generates a pressure sensing signal corresponding to the external pressure.
專利範圍: 1. A landform monitoring system comprising: a mounting frame adapted to be fixed at a position adjacent to a landform to be monitored and having an outer surface; and a plurality of sensing units mounted on said mounting frame, each of said sensing units including a pressure sensing device that includes a housing unit configured with an accommodating space and having a first opening in fluid communication with said accommodating space and distal from said outer surface of said mounting frame, and a second opening in fluid communication with said accommodating space and adjacent to said outer surface of said mounting frame, a pressure sensor having a pressure sensing side attached to said housing unit and sealing said first opening, a flexible sheet attached to said housing unit and sealing said second opening, and a fluid medium filled fully in said accommodating space in said housing unit, wherein, when said sheet deforms as a result of an external pressure acting thereon, a pressure corresponding to the deformation of said sheet is transmitted to said pressure sensing side of said pressure sensor via said fluid medium such that said pressure sensor generates a pressure sensing signal corresponding to the external pressure.

2. The landform monitoring system as claimed in claim 1, further comprising a data extracting device that includes: a signal transmitting unit coupled to said pressure sensor of said pressure sensing device of each of said sensing units; and a processing unit coupled to said signal transmitting unit for receiving the pressure sensing signal generated by said pressure sensor of said pressure sensing device of each of said sensing units via said signal transmitting unit and for processing the pressure sensing signal so as to obtain pressure information corresponding to the external pressure, thereby monitoring the landform based on the pressure information.

3. The landform monitoring system as claimed in claim 2, wherein said signal transmitting unit includes a cable unit interconnecting electrically said processing unit and said sensing units.

4. The landform monitoring system as claimed in claim 2, wherein said signal transmitting unit of said data extracting device includes: an emitter mounted on said mounting frame and connected electrically to said sensing units; and a receiver connected electrically to said processing unit and communicating with said emitter via a wireless communications network.

5. The landform monitoring system as claimed in claim 1, wherein said mounting frame is configured as a post, and said sensing units are arranged in a longitudinal direction of said post.

6. The landform monitoring system as claimed in claim 1, wherein said sensing units are grouped into a plurality of groups each having three angularly equidistant ones of said sensing units.

7. The landform monitoring system as claimed in claim 1, wherein said pressure sensor of said pressure sensing device of each of said sensing units is configured as a silicone pressure sensor.

8. The landform monitoring system as claimed in claim 1, wherein said pressure sensor of said pressure sensing device of each of said sensing units has a circuit-mounting side opposite to said pressure sensing side and provided with an electronic circuit thereon.

9. The landform monitoring system as claimed in claim 1, wherein said housing unit of said pressure sensing device of each of said sensing units includes: a substrate configured with said first opening; and a sleeve body mounted on said mounting frame, sleeved sealingly on said substrate and configured with said second opening, said sleeve body cooperating with said substrate so as to define said accommodating space.

10. The landform monitoring system as claimed in claim 9, wherein said housing unit of said pressure sensing device of each of said sensing units further includes at least one plug, and said substrate of said housing unit of said pressure sensing device of each of said sensing units has a first surface adjacent to said outer surface of said mounting frame, a second surface opposite to said first surface and mounted with said pressure sensor, a first channel extending from said first surface to said second surface and configured with said first opening, and at least one second channel extending from said first surface to said second surface, in fluid communication with said accommodating space and having an end that is adjacent to said second surface and sealed by said plug.

11. The landform monitoring system as claimed in claim 10, wherein said housing unit of said pressure sensing device of each of said sensing units further includes a cover body covered over said second surface of said substrate.

12. The landform monitoring system as claimed in claim 1, wherein said sheet is made of a metal material.

13. The landform monitoring system as claimed in claim 12, wherein said sheet is made of stainless steel.

14. The landform monitoring system as claimed in claim 1, wherein said fluid medium is non-compressible.

15. The landform monitoring system as claimed in Claim 14, wherein said fluid medium includes oil.

16. The landform monitoring system as claimed in claim 1, wherein said first opening in said housing unit of said pressure sensing device of each of said sensing units is smaller than said second opening in said housing unit of said pressure sensing device of a corresponding one of said sensing units.

17. The landform monitoring system as claimed in claim 2, wherein: each of said sensing units further includes an acceleration sensor mounted fixedly on said mounting frame, coupled to said signal transmitting unit of said data extracting device and sensing vibration of said mounting frame so as to generate an acceleration sensing signal corresponding to the vibration of said mounting frame; and said processing unit of said data extracting device further receives the acceleration sensing signal generated by said acceleration sensor via said signal transmitting unit and processing the acceleration sensing signal so as to obtain acceleration information corresponding to the vibration of said mounting frame, thereby monitoring the landform based on the acceleration information.

18. The landform monitoring system as claimed in claim 2, wherein: each of said sensing units further includes a temperature sensor mounted on said mounting frame, coupled to said signal transmitting unit of said data extracting device and adapted for sensing temperature around a location of said temperature sensor so as to generate a temperature sensing signal corresponding to the temperature; and said processing unit of said data extracting device further receives the temperature sensing signal generated by said temperature sensor via said signal transmitting unit, and processes the temperature sensing signal so as to obtain temperature information corresponding to the temperature, thereby monitoring the landform based on the temperature information.

19. The landform monitoring system as claimed in claim 2, wherein: each of said sensing units further includes a humidity sensor mounted on said mounting frame, coupled to said signal transmitting unit of said data extracting device and adapted for sensing humidity around a location of said humidity sensor so as to generate a humidity sensing signal corresponding to the humidity; and said processing unit of said data extracting device further receives the humidity sensing signal generated by said humidity sensor via said signal transmitting unit, and processes the humidity sensing signal so as to obtain humidity information corresponding to the humidity, thereby monitoring the landform based on the humidity information.

20. A pressure sensing device comprising: a housing unit configured with an accommodating space and having first and second openings in fluid communication with said accommodating space; a pressure sensor having a pressure sensing side attached to said housing unit and sealing said first opening; a flexible sheet attached to said housing unit and sealing said second opening; and a fluid medium filled fully in said accommodating space in said housing unit; wherein, when said sheet deforms as a result of an external pressure acting thereon, a pressure corresponding to the deformation of said sheet is transmitted to said pressure sensing side of said pressure sensor via said fluid medium such that said pressure sensor generates a pressure sensing signal corresponding to the external pressure.

21. The pressure sensing device as claimed in claim 20, wherein said pressure sensor is configured as a silicone pressure sensor.

22. The pressure sensing device as claimed in claim 20, wherein said pressure sensor has a circuit-mounting side opposite to said pressure sensing side and provided with an electronic circuit thereon.

23. The pressure sensing device as claimed in claim 20, wherein said housing unit includes: a substrate configured with said first opening; and a sleeve body sleeved sealingly on said substrate and configured with said second opening, said sleeve body cooperating with said substrate so as to define said accommodating space.

24. The pressure sensing device as claimed in claim 23, wherein said housing unit further includes at least one plug, and said substrate of said housing unit has a first surface adjacent to said second opening, a second surface opposite to said first surface and mounted with said pressure sensor, a first channel extending from said first surface to said second surface and configured with said first opening, and at least one second channel extending from said first surface to said second surface and having an end that is adjacent to said second surface and sealed by said plug.

25. The pressure sensing device as claimed in claim 24, wherein said housing unit further includes a cover body covered over said second surface of said substrate.

26. The pressure sensing device as claimed in claim 20, wherein said sheet is made of a metal material.

27. The pressure sensing device as claimed in claim 26, wherein said sheet is made of stainless steel.

28. The pressure sensing device as claimed in claim 20, wherein said fluid medium is non-compressible.

29. The pressure sensing device as claimed in claim 28, wherein said fluid medium includes oil.

30. The pressure sensing device as claimed in claim 20, wherein said first opening in said housing unit is smaller than said second opening in said housing unit
影像檔:
  專利公報 - 地貌及結構監測系統、該系統的感壓器及其製造方法(美)  (560 KB)

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