| 摘要 |
<p>PURPOSE:To permit simple and accurate check of the whole software altered in part by giving equal simulated output to two control unit in which softwares before and after altered are set so that output difference can be compared and judged. CONSTITUTION:Measurement data in measurement portions 8A, 8B are input into a difference computing circuit 9 at real time to compute the difference. Then the difference is input into a comparison circuit 10 and compared with a preset comparison-judgment level. This comparison-judgment level is varied by a comparison-judgment level variable device 11 with variable amount TVO of throttle valve opening granted as simulated output. When the result is the difference > the comparison-judgment level, the output from a comparison circuit 13 is turned into a latch signal and transferred to a ring memory 13 in a large-capacity memory. Next, the memory 13, when the latch signal comes in, temporarily stores a series of programs before and after that time, which are given visible-state processing by a processing unit, transferred to a personal computer and showed in a display.</p> |
