Automatic time calibration device and method

Abstract

The invention discloses an automatic time calibration device and method. The device comprises a clock module for displaying current time, a wireless data transmission module for acquiring GPS time bya CDMA telecommunication system type mobile data network, a CPU module being connected with the clock module and the wireless data transmission module and being used for calibrating the current time based on the GPS time, and an LED display screen being connected with the CPU module and being used for displaying calibrated time. According to the device or method, the GPS standard time can be obtained indirectly and freely from the CDMA base station to realize automatic time calibration.

Description

technical field [0001] The invention relates to the field of automatic time calibration, in particular to an automatic time calibration device and method. Background technique [0002] There are two types of more accurate timing clocks (or timing devices) that can automatically calibrate the time on the market: [0003] One is to use the GPS receiving module to directly receive satellite data and obtain time information from it; the GPS satellite clock uses GPS or the Beidou satellite system as the time reference, and outputs seconds (1PPS), minutes (1PPM), and hours that are highly synchronized with UTC time (1PPH) and other pulse information, GPS satellite clocks have been used in many fields, but because GPS signals are easily blocked and shielded, if the GPS signal receiving device is in a building, it will be difficult to receive effective GPS signals, causing the device The time cannot be calibrated in time. The solution is usually to install a very long external ant...

AI Technical Summary

Problems solved by technology

[0004] (1) There are many GPS signal blind spots;

[0005] (2), GPS signal is weak

[0006] Among them, the disadvantage of many signal blind spots is easy to make the equipment affected by the working environment, and many places cannot work normally, which brings great trouble to the normal time measurement.

[0007] Another commonly used chronograph is the long-wave clock. The automatic calibration time of this device depends on the long-wave time synchronization radio station. For the remote areas of our country, the reception effect is not ideal

At the same time, due to the weak signal strength, many users find that placing the long-wave clock in a certain room can synchronize the time, but moving it to another room or even a place far from the window in the original room can no longer automatically synchronize the time

Therefore, this chronograph also has the disadvantage of many blind spots.

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