Design And Support For Optronics Company - Lytestyle Designs
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Design And Support For Optronics Company
We have worked for many years in supporting existing designs and developing new products and have been involved in updating existing product PCBs to be ROHS compliant and to provide work-arounds and alternatives for obsolete components.
Below are a couple of the more recent projects that we have been involved with.
Optical Vision.
Lytestyle Designs has been involved in modifying and updating PCBs for use in optical vision devices with LED illumination.
Tha design scope has included hardware design, software design, PCB layout of the boards and final testing/debugging both remotely and at the customers premises.
These relatively small PCBs incorporate IR/laser LED driver, step-up switched mode power supply and a PIC processor providing such services as A-D conversion of multiple inputs and PWM output drive.
Due to the small size of the PCBs and limited real estate, due care had to be taken to ensure any noise from the switched mode power supply did not affect the sensitive laser LED driver and the analog inputs into the A-D.
On the smaller PCB a four layer PCB was used with components on both sides and screening areas on the inner two layers.
On the larger PCB four layers were also used but with components on one side only. With careful component placement interference was also avoided. Inner layers ground and power areas were still used for best screening and current flows.
For space saving and easy upgrades the Tag-Connect ISP connector was used for programming, debugging and for future upgrades.
Test Station.In addition to providing design services for the optical vision device PCBs, Lytestyle Designs also designed the test stations for commissioning/fault finding of the PCBs.
The testing of the PCBs was to be as straightfoward as possible so a degree of 'automatic' testing was incorporated into the test station such as precision current sources to mimic sensors, switchable PCB supply voltages to test tolerances and windowed/threshold detectors for 'go/no go' testing.
Lytestyle Designs devised all the relevant tests required to enable a fully functional test of these PCBs. We then designed the circuitry to fulfil these tests to enable the simplest operation for the test station user.
After deciding on a suitable enclosure we set about deciding on the front panel layout with regards to functional grouping and ease of use.
We then liased with the customer's own mechanical engineering department to provide drawings for the manufacturing.
We also worked with the customer to enable 'bed of nails' fixtures to be designed.
Once we had the physical positioning of all the controls and test interfaces we embarked on the PCB layout with the prime objective of keeping internal test box wiring as simple as possible with emphasis on the shortest wiring runs for the most sensitive signal routes to the bed of nails fixture.
Final wiring and assembly was performed by the customer using our provided wiring diagrams.
Final commissioning, setup and any final modifications were performed by Lytestyle Designs.
