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DEVICE AND METHOD FOR TESTING ELECTRICAL CONSUMERS CONNECTED TO A DC SOURCE OF A MOTOR VEHICLE
DEVICE AND METHOD FOR TESTING ELECTRICAL CONSUMERS CONNECTED TO A DC SOURCE OF A MOTOR VEHICLE
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机译:用于测试连接到汽车的直流电源的电耗的装置和方法
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摘要
The said loads receive their operating instructions from an electronic control unit (ECU). For test purposes, this unit is connected, in accordance with the criteria of DIN/ISO 9141, to a diagnostic computer (PC) in which the test software is stored on a corresponding carrier, for example a diskette. During a test, a shunt is inserted into the current path between direct current source (2) and load (15), which, after activation of the load to be tested by the diagnostic computer (16), generates a voltage drop dependent on the current consumption of the said load. This voltage drop is measured and compared with a load-specific nominal value in the diagnostic unit. In the case of a difference, the magnitude of this difference produces an accurate indication of the actual damage in the load or error in its function. …IMAGE…
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机译:所述负载从电子控制单元(ECU)接收其操作指令。为了进行测试,该单元根据DIN / ISO 9141的标准连接到诊断计算机(PC),其中测试软件存储在相应的载体(例如软盘)上。在测试过程中,将分流器插入直流电源(2)和负载(15)之间的电流路径中,在激活要由诊断计算机(16)进行测试的负载之后,该分流器会产生一个电压降,具体取决于所述负载的电流消耗。测量该压降,并将其与诊断单元中特定于负载的标称值进行比较。在差异的情况下,该差异的大小可准确指示负载的实际损坏或功能错误。 …<图像>…
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