B&B Electronics Asynchronous to Synchronous Converter 2010 Uživatelský manuál stáhnout pdf (Strana 7)

Department of Computer Science and Electronics

In this application, the reflecting surface is the white line in the soccer field.

Both the diode and the photodarlinton have 75mW power dissipation.

It is important to take into consideration the distance from the assembly

measurement to the reflective surface. In figure 2-2 is appreciated how the sensor’s

normalized functionality move away as much as the distance is longer.

The collector current and consequently the emitter current will depend on the

diode forward current as it shows figure 2-3. Taking into consideration the application it

is working with, although not having changes in the diode forward current, any change

in the reflecting surface, it will determinate also the emitter current, so the value that the

emitter current will have it is going to depend on the field where the robot is playing.

Figure 2-1. Above a reflection surface

ure 2-2. Normalizad collector Current vs. Ob

ective

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B&B Electronics Asynchronous to Synchronous Converter 2010 Uživatelský manuál Strana 7