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1. 发明专利

JP2014190840A Oil film detector 审中-公开
标题翻译：油膜检测器
公开(公告)号：JP2014190840A
公开(公告)日：2014-10-06
申请号：JP2013066696
申请日：2013-03-27
申请人： Dkk Toa Corp , 東亜ディーケーケー株式会社
发明人： OMORI SHIGERU , OKUMURA TAKEHITO
IPC分类号： G01N21/47
摘要： PROBLEM TO BE SOLVED: To provide an oil detector that is simply configured to eliminate a monitoring burden due to erroneous detection causing light.SOLUTION: An oil film detector comprises: an output signal generation unit for generating an output signal to the outside on the basis of a light-receiving signal of reflected light from a water surface; and an output unit for outputting the generated output signal to the outside. The output signal generation unit compares the light-receiving signal with: a first threshold Lthat is a lower limit value of a light-receiving signal level for detecting an oil film; and a second threshold Lthat is a lower limit value of a light-receiving signal level of erroneous detection causing light. The output signal generation unit generates an oil film detection signal for detecting the presence or absence of the oil film when the light-receiving signal is in a range equivalent to or greater than the first threshold but less than the second threshold; however, it does not generate the oil film detection signal when the light-receiving signal is less than the first threshold or is equivalent to or greater than the second threshold. Accordingly, the oil film detector prevents reflected light or disturbance light from objects other than the oil film from being erroneously detected as the reflected light by the oil film.
摘要翻译：要解决的问题：提供一种油检测器，其简单地被配置为消除由于错误检测引起的光的监视负担。解决方案：一种油膜检测器，包括：输出信号生成单元，用于基于外部产生输出信号来自水面的反射光的光接收信号; 以及用于将产生的输出信号输出到外部的输出单元。输出信号生成单元将光接收信号与作为检测油膜的受光信号电平的下限值的第一阈值L进行比较; 并且第二阈值Lth是导致光的错误检测的光接收信号电平的下限值。当光接收信号处于等于或大于第一阈值但小于第二阈值的范围内时，输出信号产生单元产生用于检测油膜的存在或不存在的油膜检测信号; 然而，当光接收信号小于第一阈值或等于或大于第二阈值时，它不产生油膜检测信号。因此，油膜检测器防止反射光或来自油膜以外的物体的干扰光被油膜错误地检测为反射光。

2. 发明专利

JP2014025872A Oil film detection device 审中-公开
标题翻译：油膜检测装置
公开(公告)号：JP2014025872A
公开(公告)日：2014-02-06
申请号：JP2012168101
申请日：2012-07-30
申请人： Dkk Toa Corp , 東亜ディーケーケー株式会社
发明人： OMORI SHIGERU , OKUMURA TAKEHITO
IPC分类号： G01N21/47
摘要： PROBLEM TO BE SOLVED: To provide an oil film detection device which detects an oil film by receiving reflected light from a water surface and processing the light reception signal.SOLUTION: Light reception signal processing means 106 in an oil film detection device body includes: peak hold means 106a which periodically performs an operation of sampling a light reception signal of reflected light from an oil surface existing on a water surface and holding a peak value of a light reception signal level, on the basis of a periodically outputted timing signal; comparison means 106c of which the output signal is active in a period for which a peak hold value outputted from the peak hold means 106a exceeds a first threshold L; and count means 106d which counts the timing signal. An alarm contact signal is not outputted if a count value of the count means 106d within the period for which the output signal of the comparison means 106c is active is less than a second threshold, whereby momentary reflected light or reflected light due to disturbance light is prevented from erroneously detected as an oil film.
摘要翻译：要解决的问题：提供一种通过接收来自水面的反射光检测油膜并处理光接收信号的油膜检测装置。解决方案：油膜检测装置主体中的光接收信号处理装置106包括：峰值保持装置106a，其基于周期性地输出的定时信号周期性地执行从存在于水面上的油面上反射的光的光接收信号进行采样并保持光接收信号电平的峰值的操作; 在从峰值保持装置106a输出的峰值保持值超过第一阈值L的期间，输出信号有效的比较装置106c; 以及对定时信号进行计数的计数装置106d。如果比较装置106c的输出信号有效的周期内的计数装置106d的计数值小于第二阈值，则不输出报警接点信号，由此由于干扰光引起的瞬时反射光或反射光为防止被错误地检测为油膜。

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