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公开(公告)号：US4104907A
公开(公告)日：1978-08-08
申请号：US735591
申请日：1976-10-26
摘要： An electronic measurement system for monitoring and measuring indicated horsepower (IHP) of piston type engines which may be spark-ignition, diesel, steam or other power type, based on two or more cycles of operation. Indicated horsepower (IHP) is computed for each engine cylinder in sequential fashion and is based on measurements of cylinder pressure and crankshaft angle of rotation versus time. The system hereof is also operable to measure revolutions per minute of the engine shaft, as well as combustion and compression pressures (just before ignition).
摘要翻译： 一种电子测量系统，用于监测和测量基于两个或更多个操作周期的活塞式发动机的指示功率（IHP），其可以是火花点火，柴油，蒸汽或其它动力型。 针对每个发动机气缸以顺序的方式计算出指示马力（IHP），并且基于气缸压力和曲轴旋转角度对时间的测量。 该系统还可用于测量发动机轴每分钟的转数，以及燃烧和压缩压力（就在点火之前）。
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公开(公告)号：US4102199A
公开(公告)日：1978-07-25
申请号：US717936
申请日：1976-08-26
摘要： A method of measuring temperature utilizing resistance temperature detectors (RTDs) is disclosed. A number of RTDs are sequentially scanned and their resistance values are processed by zeroing and linearizing circuit techniques so that an output signal directly proportional to the temperature of each RTD is obtained. The scanning technique incorporates constant current excitation so that complete linearization of the resistance versus temperature function is made possible with very few high tolerance components.
摘要翻译： 公开了利用电阻温度检测器（RTD）测量温度的方法。 依次扫描多个RTD，并通过使电路技术归零和线性化来处理其电阻值，从而获得与每个RTD的温度成正比的输出信号。 扫描技术结合了恒流激励，使得电阻对温度函数的完全线性化成为可能，具有非常少的高容差分量。
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