Parallel Coolant Level
Module Tester
Challenge: This is an end-of-line tester designed to put various
types of coolant-level modules through a range of functional tests. A
large I/O count was required because up to nine modules would be tested
simultaneously.
Solution: Data acquisition boards and relay modules from National
Instruments were selected as an affordable solution. They integrated easily
with the tester software, which we wrote in LabVIEW.
Result: The software was designed as a generic test execution
module allowing the operator to set up and save a test as a sequence of
simple steps such as throwing a specific relay, measuring the output at
a specific pin, setting the GPIB-controlled power supply, etc. This flexible
architecture allowed for all existing coolant-level modules, as well as
new ones, to be tested without ever making a software change.
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