| 摘要 |
<p>PROBLEM TO BE SOLVED: To enable efficient operation and to prevent a fault by disgnosing deterioration of lubricating oil of an engine and a battery by using an optical sensor, and displaying its result. SOLUTION: An incident light from the light emitting diode of a light source 9 passes the inside of an optical fiber cable 8, and its transmitted light intensity is detected by a photodetecting unit 10. And the transmitted light intensity of the incident light from the semiconductor laser 9 is measured. Besides, a reflected light from the coil surfaces of a motor 3 is received and detected by the photodetecting unit 10 to measure the reflected light intensity of the incident light. In a controlling/computing unit 11, deterioration of lubricating oil of an engine 1 is computed as a converted time from the relational figure between the deterioration of the lubricating oil and each of a light transmission loss and a light transmission loss difference stored beforehand, and displayed by alarm lamps 13. On the other hand, deterioration of a coil is computed as a converted time from the relational figure between the deterioration of the coil and each of a reflection absorbancy difference and a reflection absorbancy ratio, and displayed by the alarm lamps 13. Furthermore, in the case of measuring the deterioration of the electrolyte of a battery for the motor 3, another semiconductor laser is used for a light source 9. and the others are performed similarly to the case of the oil.</p> |
