Project

# Title Team Members TA Documents Sponsor
61 Cyclist Health Alert
Yingzheng Shi
Yuanqing Li
Yutian Sheng
Luke Wendt design_document0.pdf
final_paper0.pdf
presentation0.pdf
proposal0.pdf
video0.mov
Our goal is to design a bicycle device that could detect the physical condition and will sent alert if the physical condition fell below a threshold.

Features:
Generate electricity from mechanical source of bicycle to power the detector
Heart rate sensor (and a bio-related sweat sensor) will be inside the bike handle
The pressure sensor will be built in the saddle and both pedals
The accelerometer will be used for collision detection

Function: All sensors are connected to the power system (from mechanical energy) by wires, but they also have a secondary battery. The sensor in bike handle can check the heart rate and (salt %) to determine if the biker is in a safe physical condition. When the sensor notices it after analyzing the data, it can alert the biker to stop or to take a rest. The volume of the alert will be gentle and increase gradually.
If all pressure sensors detect pretty small value, the system will consider that the person is thrown off the bike unless he or she hits the button on the bike. We also implement a delayed emergency response system that gives enough time for user to cancel it. This feature is set to off at the beginning, the biker can choose whether to open it. For example, they can only use this feature when they are going to cycle in the some unsafe places or somewhere with few people. The collision detector will analyze the change of acceleration.

Master Bus Processor

Clay Kaiser, Philip Macias, Richard Mannion

Master Bus Processor

Featured Project

General Description

We will design a Master Bus Processor (MBP) for music production in home studios. The MBP will use a hybrid analog/digital approach to provide both the desirable non-linearities of analog processing and the flexibility of digital control. Our design will be less costly than other audio bus processors so that it is more accessible to our target market of home studio owners. The MBP will be unique in its low cost as well as in its incorporation of a digital hardware control system. This allows for more flexibility and more intuitive controls when compared to other products on the market.

Design Proposal

Our design would contain a core functionality with scalability in added functionality. It would be designed to fit in a 2U rack mount enclosure with distinct boards for digital and analog circuits to allow for easier unit testings and account for digital/analog interference.

The audio processing signal chain would be composed of analog processing 'blocks’--like steps in the signal chain.

The basic analog blocks we would integrate are:

Compressor/limiter modes

EQ with shelf/bell modes

Saturation with symmetrical/asymmetrical modes

Each block’s multiple modes would be controlled by a digital circuit to allow for intuitive mode selection.

The digital circuit will be responsible for:

Mode selection

Analog block sequence

DSP feedback and monitoring of each analog block (REACH GOAL)

The digital circuit will entail a series of buttons to allow the user to easily select which analog block to control and another button to allow the user to scroll between different modes and presets. Another button will allow the user to control sequence of the analog blocks. An LCD display will be used to give the user feedback of the current state of the system when scrolling and selecting particular modes.

Reach Goals

added DSP functionality such as monitoring of the analog functions

Replace Arduino boards for DSP with custom digital control boards using ATmega328 microcontrollers (same as arduino board)

Rack mounted enclosure/marketable design

System Verification

We will qualify the success of the project by how closely its processing performance matches the design intent. Since audio 'quality’ can be highly subjective, we will rely on objective metrics such as Gain Reduction (GR [dB]), Total Harmonic Distortion (THD [%]), and Noise [V] to qualify the analog processing blocks. The digital controls will be qualified by their ability to actuate the correct analog blocks consistently without causing disruptions to the signal chain or interference. Additionally, the hardware user interface will be qualified by ease of use and intuitiveness.

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