Project profile:
Semiconductor Laser Diode Test Equipment.
Black Box Technologies was hired for this long-term project to develop multiple test station capability for the characterization, life-test, and burn-in of semiconductor laser diodes. We provided the custom built hardware to drive these diodes with clean, stable, and safe constant current.
These are high power lasers and require several amps of current for single devices and tens of amps for laser arrays. These driver electronics and associated computer interface electronics all conform to the ANSI Standard for Laser Safety. Each test system adheres to strict interlock and control functionality. The life-test and burn-in stations were designed for 24-hour operation to control each laser independent of the others in constant current or constant power modes. Power, current, and voltage data is taken in user defined time increments, stored, displayed, and analyzed for any degradation.
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Project profile:
Fabric Manufacturing Tracking System.
There are many involved processes required in manufacturing fabric. Among these is the finishing process where the fabric is rolled and cut to length in pieces (called batching), labeled by lot number and serial number, inspected for defects, and finally packaged.
Black Box Technologies was hired to provide networked computerized inspection and batcher stations. The information is recorded from the inspectors and the batchers, and stored in a master database. The database organizes the data for simple report generation and archiving. This process was developed using Labview software with the SQL toolkit. The network is a Microsoft network set up as peer to peer using both TCP/IP and NetBEUI protocols. The batcher's station automatically prints out a piece ticket to be attached to the finished piece. A bar code is printed on the ticket and is used in the shipping department. The shipping department scans in each piece received in and uses this information to fill orders. The shipping computer software is also networked to the master database for complete tracking of fabric from each process to the time it is shipped.
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