B&B Electronics Asynchronous to Synchronous Converter 2010 Uživatelský manuál stáhnout pdf (Strana 6)

Department of Computer Science and Electronics

In brief, the purpose of this report is to illustrate how the work has been

developed, explaining the programmed code’s algorithm, mentioning the schematic and

the tests as well.

1.2. Background

The need of implementing this project derives from the fact that a model with

similar aims had been designed however not offering enough benefit. The main problem

encountered was that when there was a change of playing field, it was necessary for the

cards to be calibrated manually using a potentiometer. In the following section there

will be a brief explanation of how the old design works.

2. Relevant theory

2.1. Infrared sensor

OPB607 sensors from OPTEK are the infrared sensors chosen for this

application. It consists of an infrared emitting diode and a NPN silicon photo Darlington

mounted “side by side” on parallel axes in a gray opaque plastic housing. Both the

emitting diode and photo Darlington are encapsulated in a filtering epoxy to reduce

ambient light noise. The photo Darlington responds to radiation from the emitter only

when a reflective object passes within its field of view. [1]

Figure 1-2. 24 sensors divided in 3 cards

1 2 3 4 5 6 7 8 9 10 11 ... 42 43

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B&B Electronics Asynchronous to Synchronous Converter 2010 Uživatelský manuál Strana 6