| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an elevator control system to be operated by only the required minimum current flown to a light emitting section, while securing individual dispersion of light emitting elements. <P>SOLUTION: The elevator control system is provided with a first control device 10 having a first light emitting section 18 for sending transmission data and a first current control section 17 for controlling the current in the first light emitting section 18, and transmission is performed between the first control device 10 and a second control device 20 by optical transmission. The second control device 20 is provided with a first light receiver section 28 for receiving the first transmission data from the first light emitting section 18 as the first reception data and a second light emitting section 29 for sending the first reception data to the first control device 10 as the second transmission data. The first control device 10 is provided with a second light receiver section 19 for receiving the second transmission data as the second reception data and a judgement section 16 for judging whether data reception is possible or not on the basis of consistency between the second reception data and the first transmission data, and the first control device 10 adjusts a current value of the current control section 17 on the basis of the judgement by the judgement section 16 that reception is possible. <P>COPYRIGHT: (C)2007,JPO&INPIT |
