| 摘要 |
PURPOSE:To detect abnormality by a controller, to prevent miscopying, and an ignition and a smoke generation accident and to improve the safety of a system by comparing the output quantity of a power source with held values within a specific range at specific intervals of time and stopping the power source output when the range is exceeded. CONSTITUTION:The device includes a CPU 1, a power source control driver 2, an AC input part 3, a transformer 4, a voltage detection part 5, an auxiliary power source block 6, and a holding circuit 7. Then an A/D converting means on a control chip detects the reference voltage generation of hardware constitution and the power source output quantity of the system and compares the detected values with the specific values, a power source control means 1 performs power source control, and at the same time a power source output quantity holding means 1 holds the power source output quantity of the system. Further, the power source output quantity is compared with the values within the specific range which are held in the power source quantity holding means 1 at the specific intervals of time and if the range is exceeded, an output stop means 1 stops the power source output. Consequently, the controller detects abnormality to prevent miscopying and also prevent an ignition and a smoke generation accident, thereby improving the safety of the system. |
