GPS single-mode positioning device

Abstract

The invention relates to a GPS single-mode positioning device which solves the problem of signal lag. According to the technical scheme, the positioning device is fixed outside or inside a vehicle body and is supplied with power by a power source, and the power source is divided into an input power source body, a standby power source body and a digital power source body; the positioning device comprises a GPS positioning chip, a GPS module, a first gating circuit, a second gating circuit, a temperature-compensation crystal oscillator, a low-voltage-drop voltage stabilizer U1, a low-voltage-drop voltage stabilizer U4 and a filter U5, an EEPROM and the GPS positioning chip are connected with the GPS module through the filter U5, the GPS positioning chip is connected with the GPS module through the first gating circuit and the second gating circuit, the power source outputs a first standard power source body through the low-voltage-drop voltage stabilizer U1 to supply power to the GPS positioning chip, the EEPROM, the GPS module, the first gating circuit and the second gating circuit, the power source outputs the standby power source body through the low-voltage-drop voltage stabilizer U4 to supply power to the GPS module, the EEPROM is connected with the GPS positioning chip, and the GPS positioning chip is electrically connected with the temperature-compensation crystal oscillator. The capacity for receiving signals is high, reception of the GPS signals is not affected, and the lag phenomenon does not exist in the signal obtaining process.

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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