What do you know about gps tracking device

2018/8/24 11:02:28

Now more and more people are using gps tracking device, children, old people, private cars, car loan companies, car rental companies, etc., have used locators. A lot of knowledge about gps tracking device comes from hearsay or textual understanding.


 In fact, for gps tracking device, you must understand the following common sense.


1, civil GPS positioning accuracy of up to 10 meters


The GPS we are using now belongs to the civilian-grade GPS. We will not discuss the military level for the time being. In the case of GPS and Beidou alone, in the case of good signal (under ideal conditions such as open ground and sunny weather), the positioning accuracy is generally around 10 meters. If it is LBS (base station) positioning, the positioning accuracy is generally between 100 meters and 1000 meters.



The GPS positioning accuracy is achieved by a certain algorithm. The environment requirements at that time are very high. If there are high-rise buildings, interference signal sources, and cloudy weather, the positioning accuracy error will definitely be relatively large. The high precision mentioned in the market can only be achieved under ideal conditions. Even if it is the same machine, the same place, the positioning accuracy is different at different time periods is normal.



2, Not all batteries can do long standby


 For the ultra-long standby GPS positioner, the capacity and characteristics of the battery determine the length of the standby time.


We all know that the standby time is proportional to the battery capacity, the capacity is about the same, and the endurance is stronger. Therefore, the battery capacity can be roughly used as a judgment method.


Then not all high-capacity batteries are suitable for such positioning. There are many types of batteries, and there will be self-discharge during normal use, which means that the battery will consume power. If the self-discharge of the battery itself is very high, even the large capacity will not support the concept of long standby.


A very obvious battery that cannot be used for long standby is the polymer battery pack battery. Under normal circumstances, the self-discharge of this battery is very high, you can imagine your own mobile phone battery. Look at how long it takes to turn it on after a month.


3, WIFI positioning is not necessarily the most accurate


Many people think that the triple positioning and quadruple positioning locators are very powerful, especially the WIFI positioning, which is very high-tech, and can be positioned accurately even indoors. In fact, this is just a gimmick. If you understand the principle of WIFI positioning, you may not have such a high hope for WIFI positioning.


Simply speaking, WIFI positioning only uses the WIFI signal source to determine the IP address of the signal and then resolve it to your location. That is the address you registered with the operator when you pulled the cable. But now almost every family has WIFI, no one knows which of these signals will be obtained, so the resolution of the location will be accurate to what extent, think about it.


WIFI positioning does have an auxiliary side, but don't rely too much on it.


4, the positioner volume is not as small as possible


The smaller the volume of the positioner, the higher the technical content without reducing the component configuration. Because for the R&D personnel, it is necessary to lay out so many lines and components in the limited area, and test your comprehensive control ability and overall planning ability. But not as small as possible.


 

The most important part of the gps tracking device is the GPS module and the GSM antenna, and the space occupied by the two is relatively large. If the space is neglected, the impact on the signal is quite large. There is no fixed GSM antenna, even a small wire to replace, such a signal is not only poor, but also extremely unstable.



5 small size wireless gps tracking device has 5 years of difficulty in standby


As we said above, the wireless gps tracking device relies heavily on the battery, especially the battery capacity. If the volume is too small, the battery capacity must not be too large. In the case where the battery capacity is not sufficient, the probability that the positioner can stand by for 5 years is small. To stand for 5 years, the battery capacity must be at least 10,000 mA.