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Visiocorp

Visiocorp develop, manufacture and distribute rear vision systems for the international automotive industry.

SciWare and Danalog worked together to provide Visiocorp test solutions for their Mirror Control Module (MCM), Mirror Switch (MS) and High Speed Power Fold (HSPF) products.

The MCM is a motorized unit that moves rear view mirrors commanded by a MS unit using a protocol called PAN. The HSPF unit is a circuit that controls the folding of mirrors inwards when the car ignition is cut.

Danalog built the custom test fixture hardware while SciWare developed the test software. Shown right is a rig that allows the testing of four MS and two MCM products. An operator can choose which rig to use by sliding it out and then selecting which test system to use.

Operators commence testing by inserting the Device Under Test (DUT) into the appropriate test fixture.

MCM Tester
 
MCM HMI

When the software detects that a DUT has been inserted into the fixture testing automatically commences and a live report is generated onto the user interface as shown left.

If the DUT passes then the unit is marked, ejected from the rig and a certification of pass label printed. If the DUT fails then the DUT is ejected but must then be disposed of down the reject chute before further testing can commence.

The software interfaces to the test fixtures and measurement hardware using National Instruments DAQ, GPIB and Serial. The software was entirely written in National Instruments LabVIEW.

 

The software architecture employed relies heavily on Object Orient Programming built using GOOP Developer. Shown below is the top level of the MCM Tester code, as can be seen the solution is neat, simple and self documenting which are signatures of SciWare software design.

MCM Source Code
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