Oil temperature detector of hydraulic elevator
专利汇可以提供Oil temperature detector of hydraulic elevator专利检索，专利查询，专利分析的服务。并且PURPOSE:To allow only one sensing element to detect accurately oil temperature necessary for the control over a hydraulic elevator by detecting the oil temperature in an oil tank and judging whether the detected value is higher than a set value or not and whether the breaking of wire occurs or not, with only one sensing element. CONSTITUTION:The input signal voltage Vi to an A-D converter 10 is obtained by dividing the voltage of a DC power source 3 by the sensing element 2 and a resistance 8, so it is determined by the resistance value of the sensing element 2 corresponding to the temperature in the oil tank 1. The input signal voltage Vi is converted from analog to digital by the A-D converter 10 and outputted from a terminal V10. At this time, the digital signal operates on every resistance value that the sensing element 2 may has and optional oil temperature is detected. If the breaking of wire occurs to the element 2, the input signal Vi is ceased and the digital signal corresponding to that is outputted, so the breaking of wire is also detected. Therefore, a control circuit outputs the control command matching with the oil temperature on the basis of the digital signal to operate the elevator in safety.，下面是Oil temperature detector of hydraulic elevator专利的具体信息内容。
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