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Fluid conveyance system and fluid conveyance device

  • US 7,762,788 B2
  • Filed: 07/31/2007
  • Issued: 07/27/2010
  • Est. Priority Date: 08/01/2006
  • Status: Active Grant
First Claim
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1. A fluid conveyance system comprising:

  • a fluid conveyance device including a micro pump module which compresses a flexible tube communicating with a fluid containing receptacle and discharges a fluid, the micro pump module including a RAM memory device that stores individual identification data of the micro pump module and a power source;

    a discharge data processing device which stores basic data for driving the fluid conveyance device; and

    a communication device having a communication unit which interconnects the fluid conveyance device and the discharge data processing device,wherein the discharge data processing device inputs discharge data, for discharging a desired discharge amount of a fluid, calculated from the identification data and the basic data read via the communication device, into the RAM memory device via the communication device,the fluid conveyance device is driven based on the discharge data, andthe micro pump module includes a roller base that rotates about an axis of rotation and drives a plurality of pressing shafts perpendicularly oriented to the axis of rotation for compressing the flexible tube,the identification data includes at least an identification code of the micro pump module, a manufacturing period, and a correction coefficient for correcting a discharge amount fluctuation due to a fluctuation in inner diameter of the flexible tube, the correction coefficient being represented by a ratio between an inner diameter of a standard tube and an inner diameter of the flexible tube, or by a ratio between a discharge amount of the fluid conveyance device provided with the standard tube and a discharge amount of the fluid conveyance device provided with the flexible tube, and the correction coefficient being used to correct a discharge amount fluctuation resulting from the flexible tube having a different diameter than the standard tube,wherein the standard tube has a diameter D and the flexible tube has a diameter d, the correction coefficient being expressed by R=(d/D)2×

    1000, and R=1000 when D=d.

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