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What are the precautions for GPS car positioning devices

101 Published by admin 9月 20,2019

How does GPS car positioning devices notes work?

The GPS car positioning devices notes are terminals with a built-in GPS module and a mobile communication module, and are used to transmit the positioning data obtained by the GPS module to a server on the Internet through a mobile communication module (gsm/gprs network), thereby realizing Query the terminal location on your computer or mobile phone.

 

GPS car positioning devices notes

1.cannot search for stars at home. GPS is directly receiving GPS satellite signals from the United States. It is necessary to see the sky outside to receive satellite signals. The indoors cannot receive it!

2.Battery life is short. All car-type GPS batteries are not used for a long time. Because there is a cigarette lighter on the car, the designer thinks that it is not necessary to use the battery for a long time. The battery is only used as a spare. It is only used for 40 minutes to 1.5 hours without continuous power supply. Different, the time used is different, and there will be big differences. It is necessary to pay attention to the moment when the car is ignited, the starting current is very large, and there is a risk of burning the car charger fuse. It is best not to insert the car charger on the cigarette lighter when the car is started, and then connect after starting.

3.The positioning is not allowed. GPS normal plane positioning error is within 10-20 meters, subject to many factors such as weather, US GPS policy, and sometimes even greater. If the map indicates that the location is not exactly on the road, the reason may be that the signal is poor and the error is caused by the delay. It may also be that the map data is occasionally deviated, or the road may be wide, so it seems that the GPS car positioning devices seem to be stable off the road.

4.Cannot search for stars or search for stars slowly. Don't worry if you can't search for a star or search for a slow star. Please change your location and try it. Do not use one or two times, or one or two days to determine the quality of the GPS, because the satellite status is different every day, maybe the same place, the morning signal is very good, but the signal at night is relatively poor.

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