B&B Electronics Asynchronous to Synchronous Converter 2010 Instrukcja Użytkownika Pobierz pdf (Strona 5)

Department of Computer Science and Electronics

1. Introduction

1.1. Purpose

In MDH robot laboratory, there are five robots constituting a football team

taking part in the international robot soccer competition in Atlanta in July 2007. This

report considers a small part of a single robot.

In the bottom platform of the soccer playing robot, there are 24 infrared sensors.

When the sensors are above a white line, they give a signal due to the infrared signal

will be reflected. On the other hand, weaker signals will be received when the sensors

are above a green colour field. A general purpose of this thesis work is shown in figure

1-1. As the cards have to send the sensors’ states to the PPC digitally while they are

read in an analogue way, it is necessary to calculate each sensor’s threshold which may

change according to the field the robot is playing on.

In the aforementioned competition, the robot is going to play on different kinds

of soccer fields. Depending on the field, the sensors threshold may change, thus the

system must automatically calculate each sensors’ threshold before taking any course of

action.

One of the requirements that the thesis has to comply with, is that the sensors

must be dispersed in three different cards in order to lie over the entire platform as

shown in figure 1-2. Thus, it is necessary to establish a route of communication between

the three cards and the PPC, which is going to receive all the information from the

cards.

Figure 1-1. Description of the main objective

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

Brak uwag

B&B Electronics Asynchronous to Synchronous Converter 2010 Instrukcja Użytkownika Strona 5