Supply Voltage: 3.2-3.4 V Integrated antenna Output Power: 1dBm Size: 26 x 14 x 2 mm Bluetooth Receiver Selection The RN-42 and Bluegiga WT12i are very similar in most aspects and they both would work for ultimate tailgate station. They both are class 2 receivers and have the same interfaces. The current draw is also comparable. The RN-42 is nearly half the price of the WT12i and that is the main reason that we are going with the RN-42 for the vehicle. Bluetooth Receiver Integration The ultimate tailgate station will use the Bluetooth receiver at all times. The station will need to use an android phone for GPS tracking and remote control. The android phone sends signals to the Bluetooth receiver, and then the receiver will send those signals to the master microcontroller. The Bluetooth receiver will be connected to the master microcontroller using a serial connection. Since there is only one serial port on the master microcontroller, a certain baud rate for the connection will need to be set. Otherwise, the master microcontroller may have the Bluetooth receiver and the motor controller set on the same baud rate. The Bluetooth receiver will be connected to the master microcontroller directly. It will use the UART port to connect to the master microcontroller. User Tracking One of the most important subsystems of the project is the user tracking subsystem. It requires that the vehicle calculate its distance and direction from the user in order project its appropriate path. To do this, different location based sensors or methods must be considered. A decision must be made based on which sensor best adheres to the requirements listed in the introduction of this paper. Particularly it is desired that the sensor detect the user from at least 20 feet away and follow with an accuracy of five feet. Keeping these specifications in mind, the following methods for user tracking are considered.
Supply Voltage: 3.2-3.4 V Integrated antenna Output Power: 1dBm Size: 26 x 14 x 2 mm Bluetooth Receiver Selection The RN-42 and Bluegiga WT12i are very similar in most aspects and they both would work for ultimate tailgate station. They both are class 2 receivers and have the same interfaces. The current draw is also comparable. The RN-42 is nearly half the price of the WT12i and that is the main reason that we are going with the RN-42 for the vehicle. Bluetooth Receiver Integration The ultimate tailgate station will use the Bluetooth receiver at all times. The station will need to use an android phone for GPS tracking and remote control. The android phone sends signals to the Bluetooth receiver, and then the receiver will send those signals to the master microcontroller. The Bluetooth receiver will be connected to the master microcontroller using a serial connection. Since there is only one serial port on the master microcontroller, a certain baud rate for the connection will need to be set. Otherwise, the master microcontroller may have the Bluetooth receiver and the motor controller set on the same baud rate. The Bluetooth receiver will be connected to the master microcontroller directly. It will use the UART port to connect to the master microcontroller. User Tracking One of the most important subsystems of the project is the user tracking subsystem. It requires that the vehicle calculate its distance and direction from the user in order project its appropriate path. To do this, different location based sensors or methods must be considered. A decision must be made based on which sensor best adheres to the requirements listed in the introduction of this paper. Particularly it is desired that the sensor detect the user from at least 20 feet away and follow with an accuracy of five feet. Keeping these specifications in mind, the following methods for user tracking are considered.
ABEC_Doc_SD1.docx