Week 10: built the hardware part of the project

Title:

 Built the hardware part of the project

Objective:

1.  To built the hardware part of the project.
2.  To design appropriate wheelchair for the disabled person.

Procedure:

1. Buy the suggested motor for this project which is the power window motor. 
2. Get the wheelchair for reconstruct the design.
3. Bring the material needed for the hardware part to the welding shop for recombine the power window motor with the wheelchair.
4.  Then meet with Mr. Chen which the owners of the welding shop. Explain to him about my project and asked him to recombine the material.

Result:

1.   Mr. Chen gives opinion about this project which he says that the motor is not suitable to use because the motor can’t move if the load exceed than 100 kg. so this motor is not suitable for this wheelchair that the maximum load is 150 kg.
2. Mr. Chen also gives another solution for this project.

·         Use drill than use the power window motor. 

·         Use the motor that use in electric bicycle. 

·         Use AC power supply than use DC power supply. 

Conclusion:

This hardware can’t be done because the motor is not suitable for the project. For the better solution, I need to discuss this problem with my supervisor, Mr. Syazwan to get the better solution to solve this problem.  

week 9: test the Emg circuit

Title:


 Test the Emg circuit in the laboratory


Objective:


To test the Emg circuit in the breadboard
To measure the output produce when muscle stretch and unstretch using muscle from arm 


Procedure:

• Connect the electrode to the arm 
• Connect the battery to the power supply circuit
• Measure the output produce by the muscle

Result:

Conclusion:


The muscle will increase the voltage when the muscle stretch and the muscle also produce the voltage during relax mode which the voltage is decrease.  

week 8: Construct EMG circuit

Title:

Construct EMG circuit on the breadboard

Objective:


To develop and construct Emg circuit for the project. 


Procedure:

• need to construct the power supply for the circuit. 

• signal acquisition phase for EMG sensor

• signal conditioning which for amplification and rectification the signal 

• the complete circuit for EMG circuit on breadboard 

Result:

fully construct the Emg circuit on the breadboard and ready to tested in the laboratory 




Conclusion


 to construct  and develop the circuit, there have e few step that need to follow. the arrangement of component need to be construct acccording to the schematic diagram for getting the correct output.   

mid term break: find the alternative solution for replace component emg lead wire

Title:


 Find the alternative solution for replace component emg lead wire




Objective:


 To find the suitable component that can replace emg lead wire




Procedure: 

• firstly, i do research find the component that has same function with EMG lead wire
• this research has been done because of the difficulty to find the lead wire.
• the component must suitable and can connect with the electrode.

Result:

• according to the definition by http://www.merriam-webster.com/dictionary/alligator%20clip which a spring-loaded clip that has jaws resembling an alligator and is used for making temporary electrical connection. the illustration for alligator clip.

• Before this, there have a few test for measure the EMG using alligator clips and the result  getting from that test is success. The output produce is the same result with using Lead wire.

Conclusion:

I can concluded that alligator clips can be used for replacing the Lead wire according to the previous experiment which using alligator cable to connect the electrode with the circuit. Alligator clips can be used for  transferring the signal that has been pick up by the electrode to the circuit and the micro controller can store that data before process it.