Ethernet-powered particle counting system

• US 20060263925A1
• Filed: 05/10/2005
• Published: 11/23/2006
• Est. Priority Date: 05/10/2005
• Status: Abandoned Application

• Current Assignee: Venturedyne Ltd (Carnes Company, Inc.)
• Original Assignee: Venturedyne Ltd (Carnes Company, Inc.)
• Inventors: Chandler, David L.
• Application Number:
  US11/125,453
• Publication Number:
  US 20060263925A1
• Time in Patent Office: Days
• US Class Current: 438/61
• CPC Class Codes: G01N 15/132 Circuits
• CPC Class Codes: G01N 2035/00881 network configurations
• CPC Class Codes: G01N 35/00871 Communications between instruments or with remote terminals

Abstract

A system includes a particle counter having a data output, an Ethernet cable adapted for connecting the data output of the particle counter to a monitoring station, and a power over Ethernet (POE) type power supply structured for providing power to the particle counter via the Ethernet cable. Apparatus includes a particle counter having an air movement device powered solely by a POE supply. Apparatus may include a particle counter having an air mover, power management subsystem, and Ethernet data output, the power management subsystem for monitoring power consumption of the air mover and maintaining the power consumption below a predetermined amount, and an electrical supply for powering the particle counter via an Ethernet medium. A method includes powering a particle counter over Ethernet medium via a POE power supply, detecting microscopic particles, and producing digital data based on the detecting, and transmitting the data over the Ethernet medium.

Claims

1. A system comprising:

a particle counter having a data output;

an Ethernet cable adapted for connecting the data output of the particle counter to a monitoring station; and

a power over Ethernet (POE) type power supply structured for providing power to the particle counter via the Ethernet cable.

2. The system of claim 1 wherein the POE type power supply is adapted for being powered by the monitoring station.

3. The system of claim 1 further comprising the monitoring station.

4. The system of claim 3 further comprising an uninterruptible power supply (UPS) structured for maintaining electrical power to the monitoring station during a power outage.

5. The system of claim 1 wherein the POE type power supply comprises an endpoint type power sourcing equipment (PSE) structured to be in electrical communication with one of center taps of two Ethernet data transformers and designated conductors of the Ethernet cable.

6. The system of claim 1 wherein the POE type power supply comprises a midspan insertion type PSE.

7. The system of claim 1 further comprising a power detector structured for monitoring power usage of the particle counter.

8. The system of claim 7 wherein the power detector is structured for communicating information regarding the power usage to the PSE.

9. The system of claim 1 wherein the particle counter includes a power converter structured for adapting power obtained from the POE type power supply in order to supply electrical requirements of the particle counter.

10. The system of claim 9 wherein the power converter is structured for obtaining information regarding power consumption of the particle counter and includes a power limiter adapted for maintaining power consumption of the particle counter below a power amount being supplied by the POE type power supply.

11. The system of claim 10 wherein the power limiter comprises a peak power limiter.

12. The system of claim 10 wherein the power limiter comprises a pulse width modulation (PWM) type power regulator.

13. The system of claim 10 wherein the power limiter comprises a current limited voltage amplitude modulation type power regulator.

14. Apparatus comprising a particle counter having an air movement device adapted for being powered solely by a power over Ethernet supply.

15. Apparatus of claim 14 wherein the air movement device comprises a blower capable of moving approximately 1 CFM.

16. Apparatus of claim 14 wherein the air movement device comprises a blower capable of moving approximately 50 LPM.

17. Apparatus of claim 14 wherein the air movement device comprises a radial centrifugal type blower.

18. Apparatus of claim 14 wherein the air movement device comprises a regenerative centrifugal type blower.

19. Apparatus of claim 14 wherein the air movement device comprises a variable speed blower

20. Apparatus of claim 14 wherein the particle counter outputs particle-related measurement data, the apparatus further comprising an alarm circuit structured for creating an alarm when it is determined that the data includes one of a number of particle counts and a profile of sized particle counts outside a corresponding predetermined range.

21. Apparatus of claim 14 having a particle detection zone and a nozzle, the nozzle being adapted for drawing particles through the particle detection zone at a flow rate suitable for discretely detecting a presence of individual particles within the particle detection zone when the air movement device effects a 1 CFM total flow.

22. Apparatus of claim 14 wherein the particle counter is adapted to implement a data acquisition protocol suitable for data transfer to a Supervisory Control and Data Acquisition System.

23. Apparatus of claim 14 further comprising a power management subsystem having a power-limiting circuit structured to limit a peak power being supplied to the air movement device.

24. Apparatus of claim 23 wherein the power-limiting circuit includes a modulator adapted to change an amount of power being supplied to the air movement device based on a measurement of the peak power.

25. Apparatus of claim 24 wherein the modulator includes a pulse width modulation circuit.

26. Apparatus of claim 14 further comprising a computer for communicating with the particle counter via an Ethernet type input/output member.

27. Apparatus of claim 26 wherein the computer is adapted for controlling power consumption of the particle counter.

28. Apparatus of claim 27 wherein the controlling of power consumption includes one of an on/off operation of the low-power air movement device and a standby mode of the particle counter.

29. Apparatus of claim 26 wherein the particle counter is adapted to communicate with the computer using an Internet Protocol supporting a Web Browser.

30. Apparatus of claim 26 wherein the particle counter is adapted to communicate with the computer using a File Transfer Protocol adapted for transferring stored data to a file accessible on a network.

31. Apparatus of claim 26 wherein the particle counter is adapted to communicate with the computer using an Mail Transfer Protocol suitable for transferring data via e-mail.

32. In a system having at least one remote particle counter that provides digital data over a network and that is powered by a power supply including one of an AC source and a battery source, the improvement comprising replacing the AC source or battery source with a power over Ethernet type power supply.

33. The system of claim 32 wherein the improvement further comprises adapting an air mover of the remote detector to operate within a power range able to be supplied by the power over Ethernet supply.

34. A system comprising:

a particle counter having an air mover, a power management subsystem, and an Ethernet data output, the power management subsystem structured for monitoring power consumption of the air mover and maintaining the power consumption below a predetermined amount; and

an external electrical supply structured for powering the particle counter via an Ethernet medium using a power over Ethernet (POE) type power source.

35. The system of claim 34 wherein the air mover comprises one of a variable speed blower, a radial centrifugal blower, a regenerative centrifugal blower, a rotary vane pump, a diaphragm pump, a piston pump, a roots rotating lobe pump, and an external house vacuum system.

36. The system of claim 34 wherein the predetermined amount of power is based on a power rating of the POE power source.

37. A method comprising:

providing a particle counter having an Ethernet data output; and

providing an external electrical supply for powering the particle counter via an Ethernet medium using a power over Ethernet (POE) type power source.

38. The method of claim 37 further comprising providing an air moving device for drawing sample air through the particle counter, the air moving device adapted for being powered solely by the POE type power source.

39. The method of claim 38 further comprising providing a power regulator structured for maintaining a power consumption of the air moving device below a predetermined amount.

40. The method of claim 38 further comprising providing a control circuit structured for remotely controlling an operation of the air moving device.

41. The method of claim 38 further comprising providing the particle counter with an interface circuit structured for receiving at least one external command and, based on the external command, modifying a power consumption of and/or turning the air moving device on/off.

42. The method of claim 37 further comprising providing a communications circuit adapted for communicating with a networked computer via the Ethernet medium using a data acquisition protocol adapted for data transfer to a supervisory control and data acquisition system.

43. The method of claim 37 wherein the particle counter is adapted for communicating with a networked computer via an Internet protocol adapted for use with a web browser.

44. The method of claim 37 wherein the particle counter is adapted for communicating with a networked computer via a File Transfer Protocol (FTP) adapted for transferring stored data to a network file.

45. The method of claim 37 wherein the particle counter is adapted for communicating with a networked computer via a mail transfer protocol adapted for transferring the data in an e-mail message.

46. A method comprising:

powering a remote particle counter over an Ethernet medium via a power over Ethernet type power supply;

detecting microscopic particles with the particle counter and producing digital data based on the detecting; and

transmitting the data over the Ethernet medium.

47. A system comprising:

a power over Ethernet (POE) supply having a power supply adapted to transfer electrical power over an Ethernet cable that includes a data carrier;

a wireless access point adapted for receiving a wireless data transmission and transferring the data from the transmission via the Ethernet cable;

a wireless component structured for communicating with the wireless access point; and

a particle counter that counts particles and outputs particle counting data.

48. The system of claim 47 wherein the particle counter includes the wireless component adapted for transmitting the particle counting data to the access point.

49. The system of claim 47 wherein the particle counter receives particle data from the access point.