gps single mode positioning device

Abstract

The invention relates to a GPS single-mode positioning device. The problem of signal lag is solved, and the technical solution is: fixed on the outside or inside of the car body, powered by power supply, which is divided into input power supply, backup power supply and digital power supply, including GPS positioning chip, GPS module, first gating circuit, second Two gating circuits, temperature-compensated crystal oscillator, low dropout voltage regulator U1, low dropout voltage regulator U4 and filter U5, EEPROM, the GPS positioning chip is connected to the GPS module through the filter U5, and the GPS positioning chip is also connected through the first The connection between the gating circuit and the second gating circuit and the GPS module, the power supply outputs the first standard power supply to the GPS positioning chip, EEPROM, GPS module, the first gating circuit and the second gating circuit through the low-drop voltage regulator U1 , the power supply outputs backup power to the GPS module through the low-dropout voltage regulator U4, the EEPROM is connected to the GPS positioning chip, and the GPS positioning chip is also connected to the temperature-compensated crystal oscillator. The ability to receive signals is strong, does not affect the reception of GPS signals, and there is no lag in obtaining signals.

Description

technical field [0001] The invention belongs to a vehicle-mounted positioning device, in particular to a GPS single-mode positioning device which has good water resistance and can be installed outside the vehicle. Background technique [0002] At present, the vehicle GPS positioning and navigation device has a certain lag and unclear analysis of the signal reception, resulting in a certain lag in obtaining the signal, which has brought a lot of trouble to the car positioning during high-speed operations. On the other hand, the signal strength is weak. In some places, it is also prone to unfavorable signal acquisition. These are the areas where the current GPS single-mode positioning device needs to be improved. [0003] Chinese patent application number CN201120011020.0 discloses a vehicle-mounted GPS positioning device. It includes a shell, a card slot, an interface, a signal indicator light and a power switch, the card slot is set at the bottom of the shell, the interface...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the problem that the ability to receive signals is weak, which affects the reception of GPS signals to a certain extent, resulting in a certain hysteresis in obtaining signals, and provides a method with strong ability to receive signals, which does not affect the reception of GPS signals, and does not lag behind in obtaining signals. Phenomenal GPS Single Mode Positioning Device

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