1 / 8

TEAM BOAR

TEAM BOAR. Michael Broski Jonathan Mulvaine Josh Schortgen Phillip Byers. Abstract.

gautam
Download Presentation

TEAM BOAR

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. TEAM BOAR Michael Broski Jonathan Mulvaine Josh Schortgen Phillip Byers

  2. Abstract • The objective of this project is to roast a complete hog (approximately 150 lbs) at a constant user-specified temperature until the internal temperature of the two thickest parts of the meat reaches the desired user-specified temperature. When the hog reaches the second specified temperature, a user-configured timer will start down, which upon completion will notify the user via remote that the meat is considered cooked and ready for consumption. The roaster must use propane as an energy source, regulate the ambient temperature in the tank, withstand hazardous outdoor conditions, and wirelessly transmit readouts to a remote display device that is sized to be comfortably placed in the users pocket or on the user’s keychain.

  3. Abstract continued • The block diagram below is the most up to date plan of action for interfacing with the base station.

  4. PSSC’s • An ability to measure the internal temperature of two separate points in the meat and the temperature inside the roaster using RTD sensors. • An ability to control the temperature inside the roaster by modifying gas flow using a PWM signal to operate a voltage controlled gas valve. • An ability to store and load cooking profiles from memory. • An ability to automatically ignite and detect whether a flame is present. • An ability to wirelessly communicate temperature information to a remote display device.

  5. Hardware Design • The Microcontroller used (MC9S12H256VPVE) will be the main control of the base station for the hog roaster. • Xbee Wireless – SCI • LCD – SPI & PTT • Digital Input – ~5 I/O Pins • Sensor Data – ATD • Propane Flow Valve - PWM • Tx and Rx of SCI to control Xbee • 1 SPI Port to drive the LCD Data • Port T will drive the LCD command pins • Port A will read the state of the pushbuttons and RPG • Port AD will control the sensor input data from the temperature sensors • Port B will be used to control the flow rate valve and the automatic ignition

  6. Base Station • Mock Up Xbee Wireless Module Rx Tx 160x128 LCD Rx Tx {…} PTT PTA VALVE LPF with Gain Controller PTB SPI Shift Register Microcontroller Ignite RTD Amplification Circuit PTAD ~ 120VAC MC9S12H256VPVE Power Supply BDM 5V 3.3V

  7. Secondary Circuits • The circuits here are used to provide a secondary translation to provide the microprocessor with more meaningful data it can use. This circuit is used to control the voltage-to-pressure valve used to regulate the gas flow from the propane tank. This circuit will be used to amplify the output of the temperature sensors. Due to the fact that the temperature sensors only output around 100-300mV, the onboard ATD converter would not be able to accurately use the data. Therefore the output will first be amplified to provide a swing of at least 1-3V, allowing for greater accuracy. This circuit is a low pass filter with gain. It takes an input of ~100kHz PWM signal with a duty cycle between 50-100%. An increase of the duty cycle results in a decrease of the DC output due to the inverting op-amp

  8. Wireless Remote • Mock Up Xbee Wireless Module Buzzer Rx Tx Rx Tx SPI Shift Register PWM PTT MC9S12C32 PTAD Vibrator 16x2 LCD {..} Pushbuttons

More Related