DB-GPS GPRS-900 series satellite GPS tracking devices for Double technology products in the practical management products, the following functions such as failure to meet your requirements, please pay attention to science and technology GPS Series Double other types of products. Double Series Car GPS technology products to be equipped with GPS monitoring technology Depot software, website www.zzdbgps.com use "Internet search vehicles" function. Mobile client can be downloaded at the official website, the original account password can be used. Make sure the computer monitor internet connectivity. Normal phone network. 1, real-time location of vehicles positioning command is sent, where the vehicle onboard device on the electronic map display position immediately, when the vehicle is stationary icon is displayed in black, vehicle icon is displayed in blue. Tip: When GPRS mobile signal blind area, the system will prompt appear offline GPRS. If there is no GPS signal (such as in tunnels or underground garage location), the system will prompt the GPS signal is weak. 2, real-time tracking vehicle tracking command is sent, where the vehicle onboard device continuously displayed on an electronic map location, stationary icon is displayed in black, run-time icon is displayed in blue. Tracking frequency can be selected to be 1-300 seconds, but a direct impact on the frequency of change tracking GPRS traffic, will increase the cost of the fast tracking of mobile communications, please contact your dealer and used with caution. When the vehicle tracking system to select the vehicle center display track points, showing the speed, etc., and adjust according to when the map scale visual needs. 3, real-time upload data. Whether onboard equipment monitoring computer is turned on, the system can automatically according to the frequency (factory set to 60 seconds) to automatically upload location data, to ensure data integrity for future inquiries, upload the data remains in the overall server, not because the user's computer terminal equipment failure data loss, in the tracking state, consistent with the frequency of the GPS data uploading and tracking frequency. Export 4, track playback in track playback menu, first select query trajectory of the vehicle and the time period, and then download the track because the track will be overwritten before downloading once downloaded tracks, so there needs to be there when you can retain the value of trajectory data for permanent retention, in order to save time, you can choose to preview the track, one-time viewing of the vehicle the entire time period to exercise the track, you can also choose to play point by point first viewing vehicle trajectory, speed display can be adjusted, you can also drag the progress ruler to change the playback progress. 5, a monitoring group management software can simultaneously monitor thousands of vehicles, vehicle grouping users can manage, if you select the column in the control group, and then issues a command to locate or track, vehicles are valid for the entire group, you can grouping multi-location and multi-vehicle car while simultaneously tracking. 6, after the regional search vehicles selected area to check the car, use the mouse to designate a rectangular area on the map, you can find out the vehicle in the region, and a red icon. 7, emergency alarm when an emergency occurs, the driver can press the emergency alarm button for 2 seconds (to prevent false triggering, hold the button down time should be greater than 2 seconds), the monitoring center's Web mapping will automatically display alarm vehicle The real-time location and status, in case the driver does not threaten personal safety and public security departments with the vehicle can be controlled by monitoring service center, start listening and recording functions. 8, the electronic fence electronic fence is a rectangular area defined by the user to divide some important areas in particular, such as setting important sections, the main customer site banned from entering the area, often in and out of warehouses, terminals. After setting the electronic fence, the fence can be achieved out of the alarm, access frequency statistics. A vehicle terminal can set up multiple electronic fence. 9, the speed limit is set in the remote settings can be set to limit the speed of the vehicle speed exceeds this will be seen as speeding, while the alarm to the service center. 10, abnormal alarm system can be set up speed, cross-border (electronic fence), emergency alarm. 11. Double company statistics GPS monitoring system set up using a number of practical statistical functions: mileage statistics - for the selected time period for vehicles and mileage statistics, although the statistical algorithms have been optimized, but because of differences in data collection frequency, the system Statistics for mileage error occurs. But for management reference. Fuel consumption statistics - data input when the vehicle, the system will require users to enter a vehicle fuel consumption indicator of experience, the system can provide a theoretical vehicle fuel consumption data for a period of time for managers to reference. Focus on statistics - the vehicle management focus, such as speeding, the number of times out of the fence can be accurate statistics. 12. Double-line management technology to provide online search vehicles, continuous tracking, most of the monitoring system functions track playback, convenient access to the Internet anywhere managers also can monitor the vehicle. 13, reports can track the trajectory of the vehicle over time in the form of text reports documented for managers to download or print. Reports will include track point location description (accurate to the nearest landmark electronic map), speed, direction, engine status, statistics mileage, fuel consumption, average speed, and other data anomalies. 

keywords: GPS positioning system, GPS positioning, gps vehicle management system,