Project

# Title Team Members TA Documents Sponsor
19 An immersive human-driven robot detecting foreign matter in tubes
Pengzhao Liu
Shixin Chen
Tianle Weng
Ziyuan Lin
Yutao Zhuang design_document1.pdf
final_paper1.pdf
proposal3.pdf
Liangjing Yang
# TEAM MEMBERS:

Name Netid

Chen Shixin shixinc2

Lin Ziyuan ziyuanl3

Liu Pengzhao pl17

Weng Tianle tianlew3

# Title: A immersive human-driven robot detecting foreign matter in tubes.

# Problem:

With the development of technology in the 21st century, systems like rockets, chemistry transportation systems, and systems underground are getting more likely to involve small and unreachable spaces for humans, for example, thin tubes. Sometimes, there could be foreign matter inside these tubes and we need to figure out where it is and even remove it. For such little space that is hard to reach and observe, human beings are getting harder to enter. Current solutions include a self-control robot or a robot controlled through a remote handset. However, as the environment inside tubes could be very complex, these solutions could be either impossible or not flexible enough.

# Solution Overview:

We will design a human-driven robot but in an immersive context. We will use a self-design electric car as a model. People change the speed through audio, changing the direction by manipulating the position of their hands as if there is a real steering wheel. The position of the car will be recorded and displayed on the screen in front of the driver or on the glass of the driver even though the actual car may be far away from the user. In this way, the driver can immersively drive the car and make precise and subtle operations when the “road” condition is very complex. The robot is able to detect the foreign matter as a recognition or segmentation problem and send back the information like the position of the foreign matter. Then humans can take corresponding actions.

# Solution Components

Subsystem #1

A human hand position recognition system. The input is your hands’ position picture captured by the camera. After data processing, the output is the degree(from -90 to 90) you want to turn the wheel. This signal will be sent to the electronic component which controls the direction of the wheel through wireless communication. We will need a processor(computer GPU) to run the machine learning model for the degree regression problem. We will also need a camera, and a Bluetooth sender to communicate between the car and the computer.

Subsystem #2

An audio detection module. The input is the driver’s voice, the output is the speed of the car.

Subsystem #3

Robot body which performs the main work of detecting. A car and electronic device(like Arduino) that can control the degree of the wheel and other operations. A Bluetooth receiver that receives the signal from the main computer. Speed-changing hardware(some voltage-changing circuit)on the car.
Subsystem #4

Object recognition/segmentation system. This system aims to recognize and find the foreign object inside the tube. We can either design the neural network on the FPGA board or process the image sent back to the computer.

# Criterion for Success:

(1) Successfully calculating the degree of direction change.
(2) Successfully respond to the audio voice.
(3) The electrical degree signal can be transformed into the car wheels’ degree.
(4) The car can change speed with different audio voices.
(5) The car can detect the object and remind the computer.
(6) Additional functions of the car may be added, such as sweeping out foreign stuff.

# Distribution of Work:

Chen Shixin and Lin Ziyuan: All machine learning algorithms and implementation (audio, picture), processing data, transmitting signals between cars and computers. Complex! Even though we are ECE students. Since we need to perform both regression and classification problems under the vision and audio context. We also need to understand and manage the wireless communication of signals.

Liu Pengzhao and Weng Tianle: Design and implementation of the entire car, circuit to control the movement of the car. Arduino programming. Camera-car system designing. Additional function on the car. Complex! Since we are students in ME, we lack knowledge of circuit designing and Arduino programming. We need to coordinate the input digital signal and the car motion. We also need to make the car camera system to be stable. We need to learn sensors.

Clickers for ZJUI Undergraduate

Bowen Li, Yue Qiu, Mu Xie, Qishen Zhou

Featured Project

# TEAM MEMBERS

Bowen Li (bowenli5)

Qishen Zhou (qishenz2)

Yue Qiu (yueq4)

Mu Xie (muxie2)

# PROBLEM

I-clicker is a useful teaching assistant tool used in undergraduate school to satisfy the requirement of course digitization and efficiency. Nowadays, most of the i-clickers used on campus have the following problems: inconsistency, high response delay, poor signal, manual matching. We are committed to making an i-clicker for our ZJUI Campus, which is economical, using 2.4G Wi-Fi signal connection, and on the computer to achieve matching. At the same time, it has to deal with the drawbacks as mentioned above.

# SOLUTION OVERVIEW

Compared with wired machines and mobile phone software, wireless i-clickers have the following advantages: they are easy to carry, they can accurately match and identify user tags, they are difficult to cheat and would not distract students. A wireless voting system consists of a wireless i-clicker, a wireless receiver on the administrator side, and a corresponding software program. In order to solve the problem of signal reception which is common in schools, we decided to use 2.4GHz Wi-Fi signal for data transmission. In addition, different from other wireless voting devices that carry out identity confirmation and bind identity information on the hardware side, we decided to make an identity binding system on the software side, and at the same time return it in the hardware unit for customer confirmation.

# SOLUTION COMPONENTS

A mature i-clicker should have a hardware part and a software part. The hardware part needs economical and effective hardware logic design. These include the storage and transportation of user key signals through a single chip computer program, a simple LCD1602 display to provide immediate feedback, a 2.4GHz Wi-Fi transmit-receive device for many-to-one wireless signal transmission, and a beautiful shell design. While the software component includes the conversion of hardware signals to software signals, a mature voting system, authentication of device owners, and signal return to hardware systems.

## SCM HARDWARE LOGIC SYSTEM:

Use SCM to compile the LCD module, return user input value. STC89C52RC can easily do this. Pass data to the NRF wireless transmission module.

## WIRELESS 2.4G SIGNAL TRANSMISSION SYSTEM:

A wireless signal detector should be a many-to-one signal transmission system. Bluetooth is one-to-one and Radio frequency is expensive. So, Wi-Fi signal transmission is the best choice. Each detector should load a transmitter and a receiver to transmit data to the administrator and get the data transmitted by the software.

## HARDWARE-TO-SOFTWARE SIGNAL TRANSFER SYSTEM:

A Hard-to-Soft system is necessary in any similar design. We should write a driver to process data.

## SOFTWARE DATA PROCESSING SYSTEM:

Software ought to process the data signal accurately and generate feedback to each i-clicker. Specifically, a software is needed in our design. The administrator can get user data and display it visually through statistical charts. This system should also have the function to associate user information to their answer. This is designed to score. A return signal should also be designed here. Users can receive feedback on their detector screen.

## USER IDENTIFICATION SYSTEM ON SOFTWARE:

Give an internal ID number to each i-clicker. Bind identity information (such as NetID, Student number) to i-clicker internal ID number on the software. Users can get their binding information on their screen by pushing a specific button. This data will be reset when a new packet is returned by the administrator.

## 3D PRINT SHELL:

A beautiful shell that fits the hardware system is needed. The shell should not be too large and the buttons must fit into the hardware.

# CRITERION FOR SUCCESS

Stability: Signal should be received easily. Signal loss inside a room shouldn’t occur, especially when there is a gap of two chairs.

Affordability: I-clickers should have a low cost. This facilitates mass production and popularization on campus.

Efficiency: The process from keystroke to signal collection and transmission shouldn’t have a high delay.

Beauty: Shell design should be accepted widely and be accessible to 3D printing.

Feedback: Users should get the feedback from the administrator easily. This is useful in arousing study enthusiasm of students.

Concurrency: The system should handle signals from a great deal of students in a short period correctly.

# DISTRIBUTION OF WORK

Qishen Zhou: Software data processing system and user information identification system.

Bowen Li: Hardware-to-software data transfer system and SCM hardware logic system.

Yue Qiu: Wireless signal transmission system and processing the data returned from the administrator.

Mu Xie: 3D print shell design and physical setup for the hardware part.