| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a medical infusion pump surely stopping a motor when abnormality occurs. <P>SOLUTION: By observing the change of a voltage due to the opening and closing of a switch element 4 and inserting the switch element between the electrolytic capacitor 3 of a driving circuit and a power source circuit 1, the terminal voltage of the electrolytic capacitor equal to the input voltage of a voltage comparator circuit is gradually lowered by a current consumed by the driving circuit even while the current is not flowing to the motor in the state of interrupting the switch element. Thus, by judging the case that the input voltage holds a threshold or higher after delay time corresponding to situations as being abnormal, monitoring at all times including the time other than the time while driving the motor is made possible. <P>COPYRIGHT: (C)2007,JPO&INPIT |
