Introduction Our goals in this design: -Build a throttle position sensor prototype -Control the throttle of the throttle position sensor wirelessly -Implement a temperature sensor that will monitor the temperature of the throttle for safety
Introduction What is a throttle? -Regulates the flow of fluid and/or air -This regulation is maintained by position of the flap What is a throttle position sensor? -Monitors the position of the throttle -Has an associated output (resistance, voltage…) with every position
Throttle Position Sensor ADC 0804 IC chip 0.1uf, 10uf and 147pf Capacitors 10k Ω Potentiometer E3630A Agilent Triple Output Power Supply 741 op amp Switch 7 Segment Display Wires EPROM SN74LS47
Procedure Design specification for the Throttle Position Sensor
Stepper motor A stepper motor as the name suggests is an electric motor that can divide a full rotation into a number of steps. Unlike the conventional DC motor that rotates whenever voltage is applied across the terminal, a stepper motor is controlled using a stepper motor controller or a microcontroller following a unique sequence.
Unipolar stepper motor specification. 35L048B1U-N Counter-clockwise Rotation Clockwise Rotation
Arduino Arduino is an open-source electronic prototyping platform. The Atmega microcontroller on the board is programmed using Arduino Programming language which is based on C/C++ We programmed the MCU to control our stepper motor using serial input sent through a Xbee radio
Xbee(Zigbee) Xbee is a low power, wireless mesh networking standard. Mesh networking is a method of routing data between nodes in a network.
Configuring the Xbee radios DATA Arduino A Xbee A Sender Xbee C Receiver Arduino C - - X-CTU software
Thermal resistor also known as a thermistor is a resistor whose resistance vary with temperature. Steinhart-Hart equation is used to model the resistance on the thermistor at different temperatures. Where A, B C are Stienhart-Hart coefficient and vary by from type and model of thermistor T = Temperature in Kelvin R = Resistance in ohms at different Temperature