On-board measurement system

• US 5,587,932 A
• Filed: 08/04/1994
• Issued: 12/24/1996
• Est. Priority Date: 08/04/1994
• Status: Expired due to Fees

• Current Assignee: Fluke Corporation (Fortive Corp.)
• Original Assignee: Fluke Corporation (Fortive Corp.)
• Inventors: Gibbs, John A., Matson, Donald P., Ferrante, Joseph V., Lockman, Mark E., Wong, Warren H.
• Primary Examiner(s): Voeltz, Emanuel T.
• Assistant Examiner(s): KEMPER, MELANIE A
• Application Number:
  US08/285,952
• Time in Patent Office: 873 Days
• Field of Search: 364/556, 364/468, 364/469, 364/478, 364/550, 364/551.01, 364/557, 364/558, 364/566, 364/508, 364/579, 364/580, 364/222.1, 364/226.7, 364/917, 364/917.5 , 364/917.6, 364/917.9, 364/422, 346/33 R, 346/33 B, 73/431, 73/426
• US Class Current: 702/127
• CPC Class Codes: G01D 9/005 Solid-state data loggers
• CPC Class Codes: H04Q 9/00 Arrangements in telecontrol or telemetry systems for selectively calling a substation from a main station, in which substation desired apparatus is selected for applying a control signal thereto or for obtaining measured values therefrom

Abstract

An on-board measurement system includes a plurality of measurement modules each provided with internal or external transducers and a control module for conducting desired testing procedures. The modular logging apparatus is removably secured to a product undergoing a manufacturing process or the like whereby numerous or substantially continuous measurements can be made of environmental factors affecting a product. The control module also receives and stores measured data for later retrieval.

Claims

1. Apparatus for logging parameters to which a movable unit in a process environment is subjected, said apparatus comprising:

a plurality of separable modules including at least one measurement module provided with sensor means for measuring an environmental parameter, and at least one control module for operating said measurement module;

said control module including microprocessor means for programming a measurement sequence, detachable interface means for connection to an external command center, and memory means for storing instructions and measured data;

attachment means for removably attaching said measurement and control modules physically to said unit for movement with said unit;

first linking means positioned in communicating relation between said measurement and control modules when said modules are physically attached to said unit for transmitting instructions from said control module to said measurement module in order to direct measurement of said parameters and for returning data from said measurement module to said control module for storage in said memory means; and

said measurement module including second linking means adaptable for communication between said measurement module and another measurement module for transmitting instructions from said control module to said other measurement module, and said first and second linking means being operable separately from said detachable interface means so as to facilitate simultaneous data transmittal by said measurement module and connection of said control module to an external command center.

2. The apparatus according to claim 1 wherein said measurement and control modules are removably attached to one another.

3. The apparatus according to claim 2 wherein said modules are attached to one another in serial, in-line relation.

4. The apparatus according to claim 1 wherein said first and second linking means comprise optical communicating means.

5. The apparatus according to claim 1 wherein each module is provided with an independent power source.

6. The apparatus according to claim 1 comprising one said control module and a plurality of said measurement modules controlled by said control module.

7. The apparatus according to claim 6 wherein said first and second linking means comprise optic communicating means and wherein said modules are disposed serially in-line having said optic communicating means extending through intermediately placed modules in an in-line configuration.

8. The apparatus according to claim 7 including plural prongs extending from ones of said modules for making physical connection with sockets in an adjoining module.

9. The apparatus according to claim 8 wherein said optic communicating means comprise fiber optic means disposed substantially coaxially within said prongs and sockets, providing communication at an interface between a fiber optic member extended to an end of a said prong and an aligned fiber optic member at the base of a said socket.

10. The apparatus according to claim 1 further including an external command computer for programming a said control module.

11. The apparatus according to claim 10 wherein said external command computer is provided with a display and an input keyboard.

12. The apparatus according to claim 10 wherein said detachable interface means comprises a demountable optic link.

13. The apparatus according to claim 12 wherein said demountable optic link comprises an optic transceiver plug connected to said command computer and wherein said control module is provided with a socket in the form of a slot for removably receiving said plug, said control module providing an optic interface with said plug at said slot.

14. The apparatus according to claim 1 wherein said modules are formed of material substantially impervious to said environment.

15. The apparatus according to claim 1 wherein a said sensor means is provided at least in part internally of the corresponding measurement module.

16. The apparatus according to claim 1 wherein a said sensor means is provided externally of the corresponding measurement module, and further including means for connecting said sensor means to the said measurement module.

31. The apparatus according to claim 1 further comprising another measurement module, said other measurement module communicating with said second linking means such that said second linking means transmits instructions from said control module to said other measurement module and returns data from said other measurement module to said control module for storage in said memory means.

32. The apparatus according to claim 1 further comprising a plurality of measurement modules connected in a series relationship.

33. The apparatus according to claim 1 wherein said control module includes external communication means adapted for communication between an external device and said control module when said control module is physically attached to said unit and is positioned in communicating relation with said at least one measurement module.

17. A method of logging parameters to which a movable unit is subjected in a process environment, said method comprising:

attaching at least two measurement modules and at least one control module to said unit for moving through said process with said unit, said modules connected to each other in a series arrangement,

taking measurements with said at least two measurement modules under the direction of the said at least one control module,

returning measurement data as taken by said at least two measurement modules for storage in said at least one control module, and

transmitting measurement data from said control module to an external command module without disrupting the step of taking measurements by said at least two measurement modules.

18. The method according to claim 17 further including subsequently retrieving measurement data as stored in said at least one control module for external use.

19. The method according to claim 17 including transmitting data and control information optically.

20. The method according to claim 17 including physically attaching said modules to one another.

21. The method according to claim 20 comprising attaching said modules together in an in-line configuration.

22. Apparatus for logging parameters to which a unit is subjected in a process environment, said apparatus comprising:

at least one measurement module removably attached to said unit,

a control module including linking means, the control module being removably attached to said unit and adapted for directing operation of said measurement module and for receiving measurement data from said measurement module through said linking means,

said control module having memory means for storing said measurement data received from said measurement module and having external communication means separate from said linking means, and

external command computer means including means detachably connectable to said external communication means of said control module for operating said control module and receiving measurement data from said memory means while said control module is attached to said unit, said separate external communication means and linking means facilitating simultaneous data measurement by the measurement module and receipt of measurement data by said external command computer.

23. The apparatus according to claim 22 wherein said measurement and control modules are removably attached to one another physically.

24. The apparatus according to claim 22 including optic linking means for communicating between said measurement and control modules, and between said control module and said external command computer means.

25. The apparatus according to claim 22 wherein said modules attached to said unit are disposed physically in-line.

26. The apparatus according to claim 22 wherein said modules are sealingly enclosed and formed of materials substantially impervious to said environment.

27. The apparatus according to claim 26 including optic linking means for communicating between said modules without compromising the sealing enclosure of said modules.

28. Apparatus for logging environmental parameters to which a unit may be exposed, said apparatus comprising:

measurement and control means connected by linking means and being removably attachable to said unit so as to be adapted for movement with said unit,

said control means including storage means for storing measurements taken by said measurement means under control of said control means and including external communication means, and

external readout means separate from said unit and from said measurement and control means and operatively connectable to said external communication means for receiving data as stored in said storage means without disrupting connection by said linking means of the measurement and control means.

29. The apparatus according to claim 28 wherein said measurement means and control means are formed of materials substantially impervious to the unit'"'"'s environment.

30. The apparatus according to claim 29 including optic means for communicating between said measurement, control and readout means.