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The virtual electronic measuring instruments are virtually existing in AR
world with their graphical metaphors.
There are several advantages in comparison with usual electronic measuring instruments.
- Free design possibility of displaying measured values.
It is possible to set up the display of measured values freely by the computer
graphics unlike a usual electronic measuring instrument; analog indicator,
bar meter, seven-segment number display.
- Prompt of measuring points visually.
For example, because such as dual in-line IC has many pin leads, it is
severe task to identify a certain pin lead. Instead of written document
like 'PIN 23 of IC 8', the virtual electronic measuring instruments
indicate the target portion directly by superimposing markers.
- Concealment of work branching depending on measured result.
In the electronic inspections, there are lots of tuning tasks; the voltage
of a certain test pin ranges within fixed margin by rotating a variable
resister. In these tasks, if the voltage is in the margin, there is no
need to tune the resister. At that case, the worker has to skip some
portion of the instruction in the manual procedure. It is process branching of the
instruction.
Thereupon, it is possible to search and show the correct work process to be proceeded
next by the process control PC. While PC analyzes the output from the measuring
instruments and maintain the process control, the worker gets to concentrate
on only the work process which is conducted by the PC, without concerning work branching.
- Inspection plural targets simultaneously
As the process status is controlled by the PC, the status can be temporally
stored in any time. It makes a good advantage that the system can handle
plural number of targets to be inspected simultaneously. Also, the worker
may pauses the inspection anytime.
It is possible to overcome the various problems that are conceivable with
usual inspection work by using a virtual electronic measuring instruments.
Yoshihiro Ban (yosihi-b@is.aist-nara.ac.jp)
Wednesday, September 9, 1998