State Transition Diagram for Braun 5000 Oral B Toothbrush

Name of the Student
Assignment 1
State transition diagram
Name of the Instructor
Date

Introduction:
This assignment has the objective to develop a state transition diagram using any suitable
software of the Braun 5000 version of oral b toothbrush. This toothbrush brand is well known to
many people for its assistive usage and mostly recommended by many dentists as it can solve
any dental problem within weeks (Yang et al. 2016). We have chosen MATLAB based
simulation environment Simulink for development of the state transition diagram where the
primary functionalities which are the operation of the toothbrush in different brushing modes are
assumed as states of the machine along with some obvious states. The reason to choose
MATLAB for state transition diagram development is that the programming in MATLAB is very
simple and straightforward and the visuals created in the environment are very detail and hence
important characteristics of graphs can be spotted easily. MATLAB also has a inbuilt block of
state diagram where state chart diagram can be created by properly defining states and their sub-
state with their respective transition conditions (Chiacchio et al. 2016).
The different functionalities of toothbrush & the SmartGuide interface:
Oral B toothbrush has the following functionalities.
 The toothbrush can be charged by plugging the toothbrush plug into a socket with three
points and after a full charge the toothbrush can be operated without charging for 1-2
days when regular brushing time of 2 times in a day is assumed.
 The two timer modes that is in-bulit within the toothbrush are professional and 2-minuite
timer mode. In every timer mode the brushing modes are performed for 30 seconds.
However, the duration of brushing time in deep clean and daily clean mode is 45 seconds.

As soon as one mode is completed a green light pops up with a tiny shuttering sound
indicating the user that the current brushing mode is completed (Zou et al. 2015).
 The brushing experience can be viewed by the user with the help of computer. The User
only need to install the SmartGuide software in the system and the Bluetooth in the
toothbrush will send brushing time data into computer and then user can visualize the
experience.
 There are a total of five brushing modes and one mode of tongue cleaning available in the
toothbrush and the user can choose any of the modes as desired or each of the modes are
automatically switch any timer mode. The brushing modes of the toothbrush in
alphabetical order is Daily clean mode, Deep clean mode, Massage mode, Sensitive mode
and Whitening mode respectively (Shamshiri et al. 2016).
 The installed pressure sensor in the system detects the applied pressure by the user while
brushing. If the applied pressure goes over the limit then the system warns the user by a
red light and a warning sound. Now, when the toothbrush is operating in deep clean or
daily clean mode, if the pressure input by the user in mouth is over the limit then the
toothbrush automatically switches to sensitive mode.
State transition diagram Description:
The time taken by the toothbrush to activate all of its components are modelled using the
wait of delay state. The delay of the oral b brush is 2 seconds and if the power to the toothbrush
is ON for over two seconds then the toothbrush goes to ON state. Now, any of the favorite mode
can be chosen by the user or any of the two timer modes can be chosen.
The considered states of the machine are daily clean mode, sensitive mode, tongue cleaning
mode, massage mode, whitening mode and deep clean mode (Qiang et al. 2018). Additionally,