IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0189000
(2002-07-05)
|
우선권정보 |
EP-01116427(2001-07-06) |
발명자
/ 주소 |
- Konrad,Michael
- Schmidt,Dieter
|
출원인 / 주소 |
- Endress &
- Hauser Wetzer GmbH &
- Co. KG
|
대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
2 인용 특허 :
7 |
초록
▼
A display (AV) for on-site visualization of conditions of an automated process (PZ) is disclosed. It comprises a display controller (AS) which at least temporarily provides a state indication signal (ZA) representing a constellation of states of at least two process data signals (PD1, PD2). At least
A display (AV) for on-site visualization of conditions of an automated process (PZ) is disclosed. It comprises a display controller (AS) which at least temporarily provides a state indication signal (ZA) representing a constellation of states of at least two process data signals (PD1, PD2). At least one of the two process data signals (PD1, PD2) is derived from a signal (RX) generated externally to the field device (F1). The field device (F1) has a display element (AE) which responds to a change in the state indication signal (ZA) with a significant change in its appearance, thus signaling the constellation of the states of the two process data signals (PD1, PD2) in a visually perceptible manner. Therefore, the field device (F1) is particularly suited for on-site monitoring of entire plants or sections thereof by operating personnel.
대표청구항
▼
What is claimed is: 1. A field device with a display for on-site visualization of conditions of an automated process, the display comprising: a display controller which receives at least a first process data signal and a second process data signal, and which at least temporarily provides a state in
What is claimed is: 1. A field device with a display for on-site visualization of conditions of an automated process, the display comprising: a display controller which receives at least a first process data signal and a second process data signal, and which at least temporarily provides a state indication signal representing a constellation of states of at least the two process data signals; at least one of the two process data signals being derived from an external signal generated externally to the field device; and a display element of variable appearance which visually signals via its appearance a constellation of the states of the two process data signals, and which responds to a change in the state indication signal with a significant change in its appearance. 2. The field device as set forth in claim 1, wherein: said display controller at least temporarily provides a value indication signal representing an instantaneous value of one of the two process data signals; and said display element responds to said value indication signal by at least temporarily presenting this signal value in a visually perceptible manner. 3. The field device as set forth in claim 1, wherein: one of said two process data signals is derived from a transducer signal generated inside the field device. 4. The field device as set forth in claim 1, wherein: said display element comprises a light-emitting means of adjustable hue for illuminating a display background; and said display element responds to said state indication signal by causing said light-emitting means to illuminate the display background in a hue which signals the condition currently being represented by said state indication signal. 5. The field device as set forth in claim 4, wherein: said light-emitting means illuminates the display background in a hue which was selected from a store of discrete hue values. 6. The field device as claimed in claim 4, wherein: said light-emitting means comprises an array of differently colored light-emitting diodes. 7. The field device as claimed in claim 4, wherein: said light-emitting means comprises differently colored light-emitting films. 8. The field device as set forth in claim 1, wherein: said external signal is fed to the field device through a communications interface. 9. The field device as claimed in claim 1, wherein: said first process data signal represents a first physical or chemical process variable sensed from the automated process. 10. The field device as claimed in claim 1, wherein: said second process data signal represents a second physical or chemical process variable. 11. The field device as claimed in claim 1, wherein: the field device is installed in a plant implementing the automated process. 12. The field device as claimed in claim 1, further comprising: a transducer, wherein: said first process data signal is a signal generated by means of said transducer. 13. The field device as claimed in claim 1, wherein: the field device is selected from a group consisting of level meter, a mass flowmeter, a pH meter, a pressure gage, a limit detector. 14. The field device as claimed in claim 1, further comprising: a control element, wherein: said first process data signal is a control signal generated by said control element. 15. The field device as claimed in claim 1, wherein: the field device is selected from a group consisting of valves and pumps. 16. The field device as claimed in claim 1, wherein: the field device is selected from a group consisting of a level meter, a mass flowmeter, a pH meter, a pressure gage, a limit detector, a data recording device, a valve and a pump. 17. The field device as claimed in claim 1, wherein: said external signal representing a second physical or chemical process variable. 18. The field device as claimed in claim 1, wherein: the field device is connected to a field bus; and said external signal is transmitted to the field device via said field bus. 19. The field device as claimed in claim 18, wherein: the field bus connected to the field device is connected to a serial field bus. 20. The field device as claimed in claim 1, wherein: said external signal is generated by another field device. 21. The field device as claimed in claim 1, wherein: said display element is implemented in Super Twisted Nematic technology. 22. The field device as claimed in claim 1, wherein: said display element is implemented in Double Super Twisted Nematic technology. 23. The field device as claimed in claim 1, wherein: said display element is implemented in Color Coded Super Twisted Nematic technology. 24. A field device with a display for on-site visualization of conditions of an automated process, said display comprising: a display controller which receives at least a first process data signal and a second process data signal and which at least temporarily provides a state indication signal representing a constellation of states of at least one of the two process data signals; and at least one of the two process data signals being derived from an external signal generated externally to the field device; and a display element of variable appearance which visually signals via its appearance a constellation of the states of the two process data signals, and which responds to a change in the state indication signal with a significant change in its appearance, wherein: the field device is installed in a plant implementing said process. 25. The field device as claimed in claim 24 wherein: said first process data signal representing a first physical or chemical process variable sensed from the automated process. 26. The field device as claimed in claim 25, wherein: said external signal represents a second physical or chemical process variable. 27. The field device as claimed in claim 24, further comprising: a transducer, wherein: said first process data signal is a signal generated by means of said transducer. 28. The field device as claimed in claim 24, wherein: the field device is selected from a group consisting of a level meter, a mass flowmeter, a pH meter, a pressure gage, a limit detector. 29. The field device as claimed in claim 24, further comprising: a control element, wherein: said first process data signal is a control signal generated by said control element. 30. The field device as claimed in claim 24, wherein: the field device is selected from a group consisting of valves and pumps. 31. The field device as claimed in claim 24, wherein: the field device is selected from a group consisting of a level meter, a mass flowmeter, a pH meter, a pressure gage, a limit detector, a data recording device, a valve and a pump. 32. The field device as claimed in claim 24, wherein: said external signal represents a second physical or chemical process variable. 33. The field device as claimed in claim 24, wherein: the field device is connected to a field bus; and said external signal is transmitted to the field device via said field bus. 34. The field device as claimed in claim 33, wherein: said field bus connected to field device is connected to a serial field bus. 35. The field device as claimed in claim 24, wherein: the external signal is generated by another field device. 36. The field device as claimed in claim 24, wherein: said display element comprises a light-emitting means of adjustable hue for illuminating a display background; and said display element responds to the state indication signal by causing said light-emitting means to illuminate the display background in a hue which signals the condition currently being represented by said state indication signal. 37. The field device as claimed in claim 24, wherein: said light-emitting means illuminates the display background in a hue which was selected from a store of discrete hue values. 38. A field device with a display for on-site visualization of conditions of an automated process, said display comprising: a display controller which receives at least a first process data signal and a second process data signal and which at least temporarily provides a state indication signal representing a constellation of states of at least one of the two process data signals; and at least one of the two process data signals being derived from an external signal generated externally to the field device; and a display element of variable appearance which visually signals via its appearance a constellation of the states of the two process data signals, and which responds to a change in the state indication signal with a significant change in its appearance, wherein: the field device is connected to a field bus; and said external signal is transmitted to the field device via said field bus. 39. The field device as claimed in claim 38, further comprising: a transducer, wherein: said first process data signal is a signal generated by means of said transducer; and said first process data signal represents a first physical or chemical process variable. 40. The field device as claimed in claim 39, wherein: said external signal represents a second physical or chemical process variable. 41. The field device as claimed in claim 38, wherein: said external signal is generated by another field device. 42. The field device as claimed in claim 38, wherein: said display controller at least temporarily provides a value indication signal representing an instantaneous value of one of the two process data signals; and said display element responds to said value indication signal by at least temporarily presenting this signal value in a visually perceptible manner. 43. The field device as claimed in claim 38, wherein: said first process data signal is derived from a transducer signal generated inside the field device. 44. The field device as claimed in claim 38, wherein: the field device is selected from a group consisting of a level meter, a mass flowmeter, a pH meter, a pressure gage, a limit detector. 45. The field device as claimed in claim 38, wherein: said display element comprises a light-emitting means of adjustable hue for illuminating a display background; and said display element responds to said state indication signal by causing said light-emitting means to illuminate the display background in a hue which signals the condition currently being represented by said state indication signal. 46. The field device as claimed in claim 38, wherein: said light-emitting means illuminates the display background in a hue which was selected from a store of discrete hue values.
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