Design Requirement Update

The parking monitoring system will allow users to monitor the availability of the parking spots in Reamer from their computer. This system is designed to be cheap and fast but accurate and convenient for students around campus looking to park in one of the four parking spaces available. Occupancy data will be sent to a website that then displays the relevant information in a user-friendly way. Potential users for this specific system would be constrained to Union College students and faculty. The proposed system will only monitor parking in the Reamer parking lot; however it should be built and tested to simply migrate to other similar parking lots.

The three main overall requirements of this system are the accuracy, the overall update rate, and the cost. The system is required to have an overall cost under $100. Although many alternatives do not offer specific costs of their systems, the upper bound on the cost was chosen in order to allow the system to be marketable. The accuracy of this system is meant to be relied on; meaning its accuracy of occupancy detection must be as close to perfect as possible.
Although the accuracy of this system will be expected to be greater than 90% in normal conditions, the system is expected to perform less accurately in different sensing environments. The overall update rate of the system is required to be fast enough for a user looking for an open parking space. Although the average user will not be checking the user interface every second, or even every minute, the system will be required to update the website approximately every minute.
The three major functions of this system are data collection, storing and recognizing occupancy, and displaying that information in a user-friendly way on the Internet, all of which can be seen below in Figure 2. The type of data taken by the sensing function of this system must be able to provide information, which will allow the collection/recognition algorithm to accurately detect vehicles. Once the system recognizes the status of the individual parking spaces, this information will then be sent to the user-interface. The user-interface will manipulate this data and display it to the user in a graphical way that allows the information to be easily understood.