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Test system

  • US 9,140,675 B2
  • Filed: 11/09/2012
  • Issued: 09/22/2015
  • Est. Priority Date: 11/10/2011
  • Status: Active Grant
First Claim
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1. A test system for measuring gas ingredients in sampled intake and/or exhaust gas of an internal-combustion engine, the test system comprising:

  • a plurality of measuring devices used for measuring the gas ingredients, wherein each of the plurality of measuring devices includes a plurality of components, wherein each of the plurality of measuring devices is configured to be operable in and switched among at least first and second operational modes in which at least one of the components of the measuring device is set to operate in the first operational mode of the measuring device, and set to not operate while other of the components of the measuring device operate in the second operational mode of the measuring device, and wherein each of the plurality of measuring devices includes a local computer that calculates a measured value indicating a concentration of each ingredient in the sampled gas;

    a device managing device communicably connected to the plurality of measuring devices and configured to manage the plurality of measuring devices;

    a history-information acquiring unit for acquiring, for each of the plurality of measuring devices, operating history information indicating operating history including accumulating operating time of each of the plurality of components, wherein in accumulating the operating time of each of the plurality of components, the history-information acquiring unit accumulates the operating time of the component only in the operational modes for which the component is set to operate and not in the operational modes for which the component is set to not operate; and

    an accepting unit for accepting setting data to set, for each of the plurality of measuring devices, predetermined operational modes, wherein the setting data indicates whether each of the plurality of components of the measuring device should operate.

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