Device for measuring a filling level

• US 20070028684A1
• Filed: 07/21/2006
• Published: 02/08/2007
• Est. Priority Date: 08/04/2005
• Status: Abandoned Application

• Current Assignee: VEGA Grieshaber KG (Grieshaber Verwaltungsgesellschaft mbH)
• Original Assignee: VEGA Grieshaber KG (Grieshaber Verwaltungsgesellschaft mbH)
• Inventors: Benz, Joachim
• Application Number:
  US11/491,402
• Publication Number:
  US 20070028684A1
• Time in Patent Office: Days
• US Class Current: 73/314
• CPC Class Codes: G01F 23/284 Electromagnetic waves
• CPC Class Codes: G01F 23/292 Light , e.g. infrared or ultraviolet
• CPC Class Codes: G01F 23/296 Acoustic waves
• CPC Class Codes: G01F 23/64 of the free float type without mechanical transmission elements
• CPC Class Codes: G01F 23/68 using electrically actuated indicating means
• CPC Class Codes: G01F 23/76 characterised by the construction of the float

Abstract

The present invention relates to a device for measuring a filling level of a filling material, wherein the device comprises a receiving unit with such buoyancy properties that it floats on the surface of the filling material. The receiving unit measures the distance between the transmitting and receiving units by means of a distance measurement on the basis of a first signal that is transmitted by at least a first transmitting unit and received by the receiving unit, wherein the filling level can be determined from this measured distance.

Claims

1. A device for measuring a filling level of a filling material, the device comprising:

at least one receiving unit,

wherein the at least one receiving unit is designed such that it floats on the surface of the filling material, and

wherein the at least one receiving unit is designed for determining the filling level by means of a distance measurement on the basis of a first signal that is transmitted by the at least one first transmitting unit and received by the at least one receiving unit.

2. The device according to claim 1,

comprising a plurality of receiving units,

wherein the receiving units are designed such that they float on the surface of the filling material, and

wherein the receiving units are designed for determining the filling level by means of a distance measurement on the basis of signals that are transmitted by at least one first transmitting unit and received by the receiving units.

3. The device according to claim 1,

wherein the signal(s) has/have waves that are selected from the group consisting of electromagnetic waves, sound waves, radio waves, microwaves, infrared waves and light waves.

4. The device according to claim 1,

wherein the at least one receiving unit is designed in such a way that the distance of the at least one first transmitting unit to the at least one receiving unit can be determined by means of a transit time measurement of the signal transmitted by the at least one first transmitting unit.

5. The device according to claim 1, further comprising the at least one first transmitting unit for transmitting the first signal that can be received by the at least one receiving unit.

6. The device according to claim 1, further comprising at least a second transmitting unit for transmitting a second signal that can be received by the at least one receiving unit,

wherein the at least one first transmitting unit is arranged such that it is spaced apart from the at least one second transmitting unit.

7. The device according to claim 6, further comprising at least a third transmitting unit for transmitting a third signal that can be received by the at least one receiving unit,

wherein the at least one third transmitting unit is arranged such that it is spaced apart from the at least one first transmitting unit and spaced apart from the at least one second transmitting unit.

8. The device according to claim 1, further comprising a container, wherein the at least one receiving unit is designed for being guided along a wall of the container.

9. The device according to claim 8, wherein the at least one receiving unit is designed for being guided one-dimensionally.

10. The device according to claim 8, wherein the at least one receiving unit is designed for being guided two-dimensionally.

11. The device according to claim 1, further comprising a processing unit for evaluating and/or controlling the signal(s),

wherein the processing unit is designed for receiving and/or for transmitting and/or for evaluating the signal(s).

12. The device according to claim 1, wherein the first signal that is transmitted by the at least one first transmitting unit and received by the at least one receiving unit can be transmitted in a wireless fashion.

13. The device according to claim 1, wherein the signal(s) can be transmitted by utilizing a transmission technique that is selected from the group consisting of a Bluetooth radio signal technology, infrared radio signal technology and WLAN technology.

14. The device according to claim 1, wherein the signal(s) contain(s) at least one information that is selected from the group consisting of time data, position data, geodetic coordinates, polar coordinates, cylindrical coordinates, spherical polar coordinates, geographic coordinates, distance of the at least one receiving unit and/or the least one transmitting unit from a wall and/or from a bottom of the container and timing data.

15. The device according to claim 1, wherein the at least one receiving unit comprises a timer.

16. The device according to claim 1, wherein the at least one first transmitting unit comprises a timer.

17. The device according to claim 11, wherein the processing unit comprises a timer that defines a common system time for each of the at least one first transmitting unit and for each of the at least one receiving unit.

18. The device according to claim 15, wherein the timer is selected from the group consisting of digital clocks, quartz clocks and atomic clocks.

19. The device according to claim 11, wherein the processing unit is integrated into the at least one receiving unit.

20. The device according to claim 1, wherein at least one of the at least one first transmitting unit is a satellite.

21. The device according to claim 1, wherein the at least one receiving unit utilizes a navigation system.

22. The device according to claim 1, wherein the at least one receiving unit utilizes a satellite-assisted navigation system.

23. The device according to claim 21,

wherein the navigation system is selected from the group consisting of NAVSTAR-GPS, Digital-GPS, Local-Area DGPS, Wide-Area DGPS, WAAS-GPS, EGNOS-GPS, GLONASS, Galileo, MTSAT and Beidou.

24. The device according to claim 1, wherein the at least one receiving unit and/or the at least one first transmitting unit and/or the processing unit comprises an energy supply.

25. The device according to claim 24, wherein the energy supply is selected from the group consisting of accumulators, solar cells, batteries and a power pack.

26. The device according to claim 24, wherein the energy supply is realized with the aid of a sliding contact, by means of electromagnetic transmission and/or by means of oscillating circuits.

27. A device for measuring a filling level of a filling material, the device comprising:

at least one transmitting unit,

wherein the at least one transmitting unit is designed such that it floats on the surface of the filling material, and

wherein at least one receiving unit is designed for determining the filling level by means of a distance measurement on the basis of a signal that is transmitted by the at least one first transmitting unit and received by at least one receiving unit.

28. A method for measuring a filling level of a filling material, said method comprising the steps of:

providing at least one receiving unit that is designed such that it floats on a surface of the filling material, and

determining the filling level by measuring the distance between the at least one receiving unit and at least one first transmitting unit on the basis of a first signal that is transmitted by the at least one first transmitting unit and received by the at least one receiving unit.

29. The method according to claim 28, further comprising the step of measuring a transit time of the first signal that is transmitted by the at least one first transmitting unit in order to determine the distance of the at least one first transmitting unit from the at least one receiving unit.

30. The method according to claim 28, further comprising the step of measuring the transit times of a first signal and a second signal that are transmitted by the at least one first transmitting unit and by at least one second transmitting unit in order to determine the distance of the transmitting units from the at least one receiving unit.

31. The method according to claim 28, further comprising the step of mechanically guiding the at least one receiving unit one-dimensionally in a container that contains the filling material.

32. The method according to claim 28, further comprising the step of measuring a time difference of the signal(s) between the transmission by the at least one first transmitting unit and the reception by the at least one receiving unit with the aid of a timer.

33. The method according to claim 28, further comprising the step of defining a common system time for each of the at least one first transmitting unit and for each of the at least one receiving unit.

34. The method according to claim 28, further comprising the step of receiving the signal(s) from satellites in the form of the at least one first transmitting unit.

35. The method according to claim 28, wherein the filling material consists of the water of an open water.

36. A method for measuring a filling level of a filling material, said method comprising the steps of:

providing at least one transmitting unit that is designed such that it floats on the surface of the filling material, and

determining the filling level by measuring the distance between the at least one transmitting unit and at least one receiving unit on the basis of a signal that is transmitted by the at least one transmitting unit and received by the at least one receiving unit.