Saturday, April 4, 2009

The Huggy Doll

The design of the Huggy doll is sketched in Solid Works 2003 software.
To match with the twelve body parts of the pajama, the new doll is designed with twelve places for sensors, the shoulders, arms, upper front body and upper back body. The side of the doll is decided to be able to be well fit in adults’ palms. The dimension of the doll is approximately: (width x length x high = 3.8 x 5 x 5.5 (cm3)), excluding the arms. With the arms, the length of the doll is 7 (cm). The thickness of each arm is 1 (cm) and length is defined as 45 cm according to be matched with the body size.
As in the Huggy Suit (which simulates pressure on human body), there are one sensor on each side of shoulders, each side of upper arms and 4 sensors each for front and back of the body.
In this design, the arms of the doll is made to represent the child’s arms. The extruding part for joining to the body has a small tunnel inside for letting the sensor’s wires pass through into the doll body. Inside part of the arm is in hollow form to reduce the materials used. On the outside, the edges are rounded and smoothened to obtain friendly appearence.

Figure: Views of the arm

The body of the doll is made by joining two parts, left and right, which are symmetry. The purpose of breaking them into two is to reduce the difficulties of installing sensors and circuits on the doll and in the doll body.

Figure: Drawing of a half of the doll body

The body of the doll is hollow, which will house the circuits to send the data to the computer. The thickness of the body is set to 4 (mm) to be able to withstand the pressure given onto it.

Figure: View of Body (Below)

The overall look for the dool is as shown below, before mounting the sensors.

Figure: whole body of the Huggy Doll

Monday, December 22, 2008

Studying on Human Body Ratios

Saturday, December 13, 2008

CA2 Summery

1. Simplified the user interface programs (VC++)
2. Redesigned QTC sensors (Hardware)
3. Designing the Pajama (2 methods)

Slides Summery . ..

CA2 Slide

Designing Inflatable Suit (In Progress)
Design 1:
In the Existing Jacket with stretchable pockets to embed the air pouches, the stretchable pockets are changed to

Design 2:
Contact Company: Choya Toys Company (China)
The Design Progress is in progress. The Drawing Design will be sent to the company to fabricate a suit for the Huggy Project.
Since this company has done various designs of inflatable suits, even for the 2008 Olympics, and Local Balloon Companies are unable to make such inflatable, we have concluded to order form this company.

This is some of the example suits that they have made.

Thursday, November 20, 2008

New Program for Demos

A new program is written to simplify the data transfar between the input device and the output circuit.

Initially, the data read from the doll (Bluetooth Dongle) was sent to the other computer to simulate haptic communication.
Now, the requirement of another execution in between two devices is eliminated.

As from the Bluetooth Doll of input side, the pressure Level from 0 to 255 (lowest to highest) is sent from the readings of 12 sensors. The data sent from the bluetooth doll is continuous with the format of [XS---S---S---S---S---S---S---S---S---S---S---S---], where --- are the applied pressure values onto the doll.
The computer which captures the bluetooth data will execute the data and differentiate the pressure values into 10 levels (0 to 9) and add into the command package.

The simple command package [X: Pressure Value: Y: Pressure Value: Z] is sent from the input part to the output device directly.

Figure : FlowChart of Updated Program

My teammate, Ben, has also reprogrammed the Output Device to act as stand alone except reading the commands from the Serial Com port of the computer.

Thursday, November 6, 2008

Ideas on using BioMetal

Biometal can contract into curvier shape when current is fed through it.
More Information

The following is the design of First Level: Using biometal to contract the cloth tube.

As in the following picture, the biometal thread can be put inside the tube-shaped fabric and feed the current through the metal to transform the metal into more curving shapes.

Figure 1 : Level 1 Design

The following is the design of Second Level: Using other material as medium

In this application, the biometal wire is used to pull the rods (made of some heat resistance material such as clay or ceramic) together to apply squeezing force on shoulders.
When current is fed trhough the bioMetal wire, it will pull the rods together and the shoulder pad will become more convex from resting positon.

Figure 2 : Level 2 Design

These can be put on the shoulders (and on other parts as well) of the huggy pajama.

Figure 3 : On the Clothing

Reference :

Tuesday, November 4, 2008

04/11/2008 Meeting Minutes (Draft)

Making use of BioMetal Material
This metal strands contract when current passes through.
Is it easier to control?
Idea: Finger Shaped Application to embed in the jacket
Problem: Heat insulating
Brainstorm for :
1. How to provide haptic feeling
2. Embed into mechanism (how to build small modules based on the strings)
Recommended Material, BMX up to 200% extension.
Next Meeting: Friday 1:30 to 2:30 pm
Prepare Sketches for this by Thursday.

Thursday, October 30, 2008

To recharge Bluetooth device's battery

Power Supply Setting : 5.6 V, I < 200mA ;

Connect in series with a 10 Ohm Resister;

Charge at least about 2 hours;