Laser Display System

Presentation Transcript

Laser Display System Christopher Nigro David Merillat

Description/Overview (1) Produce a basic parallel graphical show utilizing an arrangement of diode lasers. Bolster content presentations (stationary and looking) with the likelihood of pictures and basic video. Limit lasers required for show. Ought to help limit cost. Give enough precision and synchronization to guarantee coming about picture seems reliable with negligible jitter and glimmer.

Description/Overview (2)

Specification Value Refresh Rate 60 Hz ± 5 Hz Vertical Resolution 16 pixels Vertical Height 12.5 cm ± 0.5 cm Vertical Jitter < ½ pixel Horizontal Resolution 100 pixels Horizontal Field of View 90° ± 1° Horizontal Jitter < ½ pixel Optimal Projection Distance 70 cm Display Specifications

Target Display Modes Target Deliverables Basic Text Display fundamental 8-point content. Looking over Text Display looking over 8-point content at a configurable speed. Delay Display Pause shows between summons. Objective Deliverables Binary Image Display ASCII-encoded parallel pictures. Paired Video Display activity, or related arrangements of ASCII-encoded parallel pictures.

Analysis and Feasibility (1) Specification: 60Hz Display Requires a 4-confront reflect turning at 900 RPM. Subsequently, required laser working recurrence must be roughly 50 kHz. Determination: 16 x 100 Pixel Resolution Frame Size: 200 Bytes Required Bandwidth: 12 kB/s Expected Brightness Approximately 350 compact disc.

Analysis and Feasibility (2) Horizontal Accuracy Requires electrical planning exactness of around 40 us. Reflect mounting exactness (flat) is not essential and can be made up for in programming. Vertical Accuracy Requires vertical mirror mounting exactness of roughly 0.5 degrees.

Other Technical Difficulties Mirror Mounting Mirror faces not mounted on engine shaft's hub of pivot. Causes nonlinearities in laser reflection edges. Outline Construction Many of the segments in this framework require exact or exact mounting. Engine Speed Control If an average synchronous engine is not found, a speed control framework must be executed to keep reflect pivot speed steady.

Project Status Current Activities Acquiring Components System Microprocessor Acquired and Functional Motorola MC68332 20 MHz Microprocessor Lasers, engine, and materials required for precise development and mounting of framework segments. Subsystem Design Motor Control Output FIFO Control Output Driver Channel

Conclusion Questions? Remarks? Recommendations?