Design Of Guide System Based On Windows Mobile Smart Phone

Recently, tourism develops rapidly in china and it has become an important part of national economic growth. Though, there is a leader in the travel team, tourists may lose the way when reluctant to leave some scenery spots or other reasons due to their unfamiliarity with the scenery spots. In this situation, mobile phone may be the only communication tool, but there are faults such as indirection in this kind of mean and unfamiliarity with surroundings may case indistinct exchanges and lead tourists far away from the team. So, guide system, which can provide explanations of scenery spots and directly show the locations of leader and team member himself on the map, has on the demand of the tourism market.After analyzation of market demand, guide system based on Windows Mobile is designed in this paper based on technologies of Windows Mobile programming, GPS, SMS and map displaying and combined with specialities of Windows Mobile devices such as little storage space, ground on Unicode code, avalibility of all most widgets of Windows desktop version. The main research contents are as follows:1. APIs provided by GPS Intermediate Driver are called to access GPS devices. Fuctions of GPSOpenDevice, GPSGetLocation and GPSCloseDevice are called to acquire GPS data of latitude and longitude. Experiments show that GPSID enables GPS aquiration programming much more convenient and faster.2. Sending and intercepting of SMS are achieved with Pocket Outlook. Sending of SMS is realized by using OutlookSession class in POOM of Pocket Outlook object model; Intercepting of SMS is realized by using relative classes in Microsoft.WindowsMobile.PocketOutlook.MessageInterception namespace, then required informations are extracted and SMS is deleted at last. Send and interception of SMS enable the communication betweent team leader and members and the acquiration of leader's latitude and longitude informations for members.3. Map displaying and scenery spots inquiration services are realized with Google static map APIs and .NET relative widgets. The APIs of Google static map respond HTTP's requests by the way of images feedback from websites and create map according to the websites parameters sended by standard HTTP's requrests. Webpages are embedded in form application programs with the widget of WebBrowser provided by .NET, and latitude and longitude informations are sended to the corresponding parameters of websites, then location displaying of tourists in the map is realized.4. Whether there are scenery spots near the users is judged according to the latitude and longitude informations, and if exist, then the guide system can prompt the tourist to check the relative informations of the spots.The guide system is tested based on phone devices of Dopod P 800 and Samsung i728, assuming each famous universities of Chongqing as scenic spots. Experments show that this system can realize those basic guide functions such as location showing, leader location showing, scenery information prompting, and has good specialities of real-time and stability.