介紹了一種便攜式船舶柴油機(jī)診斷儀的研制方法，采用低功耗ETR100E 模塊，利用低功耗、串行接口輸 出的ad 芯片實(shí)現(xiàn)船舶柴油機(jī)瞬時(shí)轉(zhuǎn)速信號的采集。對采集的數(shù)據(jù)通過時(shí)域、頻域信號分析，進(jìn)而提取診斷信息。儀 器使用電池供電，功耗低,方便現(xiàn)場測量。同時(shí)能對柴油機(jī)氣缸的運(yùn)行狀態(tài)能進(jìn)行準(zhǔn)確診斷。具有實(shí)用與推廣價(jià)值。
關(guān)鍵詞：柴油機(jī)診斷儀；瞬時(shí)轉(zhuǎn)速；便攜式儀器
The Development about Pocket Diesel Diagnosis Instrument Cui Xiufang Chang Yong
（Shanghai Ocean University，Shanghai 201306 China） Abstract: Introducing a developing method about the pocket marine diesel diagnosis instrument. It uses the
ETR100E module with lower power. An AD sampling chip samples the ship diesel transient speed signals by serial bus. We can analysis the sampling transient speed signals by the ways of time domain and frequency domain. A Battery offers the instrument’s power. This can offer to measure the local diesel. From a lot of local test, it can diagnose the diesel working
state exactly. So it has the value of practicality and popularity.
Key Words: Diesel Diagnosis Instrument；Instantaneous speed；Pocket Instrument