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    • 5. 发明授权
    • Operational test device and method of performing an operational test for
a system under test
    • 对被测系统进行操作测试的操作测试装置和方法
    • US06011830A
    • 2000-01-04
    • US987765
    • 1997-12-09
    • Tiberius SasinSteffen HermannsDieter Kreuer
    • Tiberius SasinSteffen HermannsDieter Kreuer
    • H04M3/24G06F19/00H04B7/26H04B17/00H04M3/00H04M3/32H04W24/00H04M1/24
    • H04W24/00H04M3/323
    • The invention relates to an operational test device and a method of executing an operational test for a test system which can assume a number of operating states. A test case generator (TCG) is provided for generating a number of test cases which are sent via a test device interface (INT) to the system under test (SUT). A test state model of the test system is ascertained by a test state model generator (TSTM-G) from information on the hardware configuration of the test system (SUT), information on the possible operating states of the test system (SUT), information on the test commands necessary for bringing about changes in operating state within the test system (SUT), and from traffic values which indicate transitional probabilities ascertained in the test system's real application for the operating states. Test commands are generated on the basis of a Monte-Carlo simulation of this test state model. The operational test device is particularly suitable for use with a Petri net state model for testing a telephone network or in particular a mobile telephone network, such as a GSM network, e.g. for interrupting connection lines therein.
    • 本发明涉及一种操作测试设备和对可以承担多个操作状态的测试系统执行操作测试的方法。 提供了一个测试用例生成器(TCG),用于生成通过测试设备接口(INT)发送到被测系统(SUT)的多个测试用例。 测试系统的测试状态模型由测试状态模型发生器(TSTM-G)根据测试系统(SUT)的硬件配置信息,测试系统(SUT)的可能运行状态信息,信息 对于在测试系统(SUT)中进行操作状态变化所需的测试命令,以及指示测试系统对于运行状态的实际应用中确定的过渡概率的流量值。 测试命令是基于该测试状态模型的Monte-Carlo仿真生成的。 操作测试设备特别适用于Petri网状态模型,用于测试电话网络,特别是移动电话网络,例如GSM网络,例如, 用于中断其中的连接线。
    • 9. 发明授权
    • Method of and apparatus for producing a foam-forming reaction mixture
    • 用于生产泡沫形成反应混合物的方法和设备
    • US4195527A
    • 1980-04-01
    • US906798
    • 1978-05-17
    • Wilfried EbelingKlaus SchulteDieter Kreuer
    • Wilfried EbelingKlaus SchulteDieter Kreuer
    • C08G18/00B29B7/76G05D11/13G01N9/02
    • B29B7/7615G05D11/137
    • The invention relates to a method of and an apparatus for producing a foam-forming reaction mixture of at least two liquid components which react together and which are fed continuously to a mixing zone where they are mixed together. The volumetric flow of at least one component is measured continuously both in the main pipe leading to the mixhead and also in a subsidiary pipe which branches off the main feed line between the storage for the components and its pump. This subsidiary stream serves as a source for intermittent weighing of the component so that the density of the reaction component can be periodically calculated and monitored. This helps ensure the proper mass of component entering the mixhead.An apparatus is disclosed which achieves precise dosing of the components so that a product free of defects and having the desired properties may be produced.
    • 本发明涉及一种用于生产反应在一起的至少两种液体组分的泡沫形成反应混合物的方法和装置,它们连续供给到混合在一起的混合区。 至少一个部件的体积流量在通向混合头的主管道中以及在用于部件的储存器和其泵之间从主进料管线分支的辅助管道中连续测量。 该辅助流作为元件间歇称重的源,从而能够周期性地计算和监测反应组分的密度。 这有助于确保组件进入混合头的质量。 公开了一种实现组件的精确计量的装置,使得可以产生没有缺陷且具有期望特性的产品。