Innovative on line Digitization and documentation using accelerometer

digital pen

Vijayan T1, Sridhar raja 2 ,kalaiselvi B 3 1,2,3Asst. Professor 1School of Electrical Sciences, BIST, BIHER, Bharath University

tvij16@gmail.com, sridharraja.eie@bharathuniv.ac.in, kalaiselvi.eie@bharathuniv.ac.in

Abstract: This paper relies on upon the Accelerometer-based computerized pen for

written by hand digit with direction acknowledgment calculation is produced for

direction acknowledgment applications. The computerized pen comprises of a triaxial

accelerometer, a microcontroller, and a Zigbee remote transmission module for detecting

and get-together the signs of increasing speeds of penmanship and motion directions, by

method for this innovation we can change introduce method for human PC association

precluding mouse and keyboard. This system has very fast communication to transmit

long distances with less time. No extra pheripherals are required other than a small USB

transceiver module.

INTRODUCTION

Expanding development of scaling down innovations in electronic circuits and

segments has significantly diminished the measurement and weight of shopper electronic

items, for example, advanced cells and handheld PCs, and along these lines made them

more helpful and advantageous. Because of the quick improvement of PC innovation,

human–computer collaboration (HCI) strategies have turned into a vital part in our every

day life. As of late, an alluring option, a convenient gadget implanted with inertial

sensors, has been proposed to sense the exercises of human and to catch his/her

movement direction data from increasing velocities for perceiving signals or penmanship.

Digital Object Identifier of inertial sensors for general movement detecting is that

they can be worked with no outside reference and constraint in working conditions.

Nonetheless, movement direction acknowledgment is generally entangled in light of the

International Journal of Pure and Applied MathematicsVolume 119 No. 7 2018, 2087-2097ISSN: 1311-8080 (printed version); ISSN: 1314-3395 (on-line version)url: http://www.ijpam.euSpecial Issue ijpam.eu

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fact that distinctive clients have diverse speeds and styles to produce different movement

directions. Subsequently, numerous analysts have attempted to limit down the issue space

for expanding the precision of penmanship acknowledgment frameworks. As of late, a

few analysts have focused on diminishing the blunder of penmanship direction

reproduction by controlling speeding up signs and rakish speeds of inertial sensors. In

any case, the recreated directions experience the ill effects of different inherent blunders

of inertial sensors. Henceforth, numerous scientists have concentrated on creating

powerful calculations for blunder pay of inertial sensors to enhance the acknowledgment

precision. A pen sort info gadget to track directions in 3-D space by utilizing

accelerometers and gyrator was additionally proposed. A proficient increasing speed

mistake remuneration calculation taking into account zero speed pay was created to

lessen quickening blunders for securing exact reproduced direction. An augmented

Kalman channel with magnetometers was utilized to repay the introduction of the

proposed computerized composing instrument. On the off chance that the introduction of

the instrument was evaluated exactly, the movement directions of the instrument were

remade precisely.

An optical following alignment technique taking into account optical following

framework to adjust 3-D increasing speeds, rakish speeds and space state of mind of

penmanship movements. The OTS was created for the accompanying two objectives: 1)

to get increasing velocities of the proposed omnipresent advanced written work

instrument by aligning 2-D directions and (2) to get the exact state of mind points by

utilizing the different camera adjustment. In any case, keeping in mind the end goal to

perceive or reproduce movement directions precisely, the previously stated

methodologies present different sensors, for example, spinners or magnetometers to

acquire exact introduction. This expands extra cost for movement direction

acknowledgment frameworks and in addition computational weight of their calculations.

So as to lessen the expense of frameworks and improve the calculations, much research

exertion has been given to remove critical elements from time-arrangement inertial signs.

Registered relationship coefficients of the total estimation of speeding up and the

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supreme estimation of the first and second subordinates of quickening to shape highlight

vectors. They then connected chief part investigation and Fisher straight discriminant to

diminish the measurement of the component vectors. (3-7) With the decreased

components, a period slacked encourage forward system was prepared to perceive 2-D

penmanship motions and the best execution with a general precision of 95%. In the

speeding up, speed, and position elements were produced from crude increasing speed

signs, and afterward, the Principal segment investigation was used to diminish the

element measurement size. They effectively utilized a concealed Markov model with

element time distorting calculations to perceive 3-D penmanship digits with an

acknowledgment rate of 90%.

EXISTING SYSTEM

The reason that the light pen works is the VIC-chip (graphical chip inside the VIC-

20 and C64). Most by far of the Commodore PCs are great with the TV-flag. In case you

look at the TV-screen you will see an entire picture as broad as the screen itself. Really

the screen is "made" by a light emanation that "mishaps" onto inside the screen. A

covering inside the screen will light up when it is hit by an electron. The electron shaft

starts in the upper left corner and "makes" to the other side. At the end of the line it goes

quickly to the other side and starts at the accompanying line. Exactly when the electron

bar has accomplished the lower right corner everything begins from the earliest starting

point again. The material that lights up continues enlightening about an indistinguishable

time from the bar needs get to a similar point yet again. When in doubt the lines are not

"made" in a relentless movement but instead first all the even lines are "created" and

subsequently all the odd lines are "made". This give a predominant picture yet does not

intrude with the working of the light pen. (8) In 1 second the entire screen will be

"formed" 60 times (50 times for PAL) that is 30 times the odd lines and 30 times the even

lines. The screen repeat is in this way 30 Hz.

On the photograph there is a light pen. (9-10) The moving touch is the electron bar. In the

tip of the light pen there is a photo transistor that switches as it sees a light. This light is

the electron bar that goes before the light pen. This foto-transistor sends a sign to the VIC

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chip by method for the joystick port.(11-17) Since the VIC chip controls the electron

shaft itself it knows the position of the electron bar at all times. Moreover, will put the

position of the light pen into an enlist that can be scrutinized by the framework. The tip of

the light pen has in like manner a common switch which impedes the indication of the

photo transistor when the pen is not crushed against the screen. (18-21) This will square

false readings when the pen is moved along the screen yet not touching it.

Fig.3.1 Block diagram of light pen

Drawbacks of existing system

◦ Shorter distance between PC and Pen section.

◦ Some board or display is required for writing.

◦ A CRT display is required for direct interaction.

◦ It requires physical contact over the display to interpret a signal.

ACCELEROMETER-BASED DIGITAL PEN SYSTEM

In this framework we are utilizing tri-pivotal accelerometer, a microcontroller

(with A/D converter), and a remote handset (Zigbee). The tri-hub accelerometer measures

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the speeding up signs produced by a client's hand movements. The microcontroller

gathers the simple speeding up signs and changes over the signs to advanced ones

through the A/D converter. (22-24) The remote handset transmits the quickening signals

remotely to a (PC). The speeding up signs measured from the tri-pivotal accelerometer

are transmitted to a PC by means of the remote module. As said above there are two

modes. The working of these two modes are as per the following.

Mode 1: Gesture Recognition Mode

When the gesture recongnition mode is selected, the motion sensed by the MEMS

sensor is used to recognise the path traced and to generate alpha numerals or symbols.

This is done with the help of MATLAB software. The incoming signal is compared with

the coded program in the MATLAB database and the traced path is interpreted into the

corresponding alpha numeral or symbol and will be displayed on the screen. No

operations takes place when the right click button and the left click buttons are

pressed.(25-31)

Mode 2: Mouse Mode

When the mouse mode is selected, the motion sensed by the MEMS sensor is used

to plot and track the mouse pointer inside the executed visual basic application. Left click

button on press acts as the left click of an optical mouse. It can be used to open any

assigned applications in the visual basic form. Right click button on press acts as the right

click of an optical mouse and it can be used to cut, copy, paste, refresh, etc.(32)

The following figure 3.2 shows the block diagram of the digital pen which has two

sections

1) Pen section

2) System interface section

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The pen block which can be handheld and the system interface block which is

connected to the computer through an USB port. These two sections or blocks

communicate through a wireless RF module as shown.(33-36)

Fig.3.2 Block diagram of Digital pen

Advantages Of Proposed System

◦ Longer distance is possible by using Zigbee communication.

◦ Integrated mouse mode.

◦ No extra pheripherals are required other than a small USB transceiver module.

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RESULT & CONCLUSION

Work flow chart(MATLAB)

Once the program starts executing first it sets the input port as a serial port then opens

that port then reads the incoming data then compares with predefined values and displays

the characters and closes the receiver port then ends the execution.

Start

Set the zigbee receiver port as serial input

Open port to which the zigbee receiver is connected

Read the incoming data from the zigbee receiver port

Compare the incoming data with predefined values

and display the characters or digits or symbols

Close the zigbee receiver port

Stop

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Accelerometer-based digital pen for handwritten digit with trajectory recognition

algorithm is developed for trajectory recognition applications. By means of this

technology we can change present way of human computer interaction ruling out mouse

and keyboard. Special applications can be developed for registering crucial text data in

case of emergency. In medical field – when a patient requires immediate attention by the

doctor with the help of an simple software condition and requirements for the patient can

be noted down with the pen immediately without any need for paper with the digital pen

in 3-Dimensional space and it is wirelessly transmitted to the main computer system with

the software and recorded in real time. The prescribed medicines can be made readily

available for the patient in need. The digital pen can be a time saver and at times even be

a life saver in this aspect.

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