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Computer time correcting device and method by 1PPS (pulses per second) signals

A computer and GPS receiver technology, applied in the field of computer time correction, can solve problems such as inability to use, and achieve the effect of simple hardware circuit, easy installation and use, and easy realization

Inactive Publication Date: 2017-05-31
NO 20 RES INST OF CHINA ELECTRONICS TECH GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, when using the GPS timing card, it is necessary to install corresponding drivers for different operating systems. If a certain operating system does not support the GPS timing card, it cannot be used.

Method used

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  • Computer time correcting device and method by 1PPS (pulses per second) signals
  • Computer time correcting device and method by 1PPS (pulses per second) signals
  • Computer time correcting device and method by 1PPS (pulses per second) signals

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Embodiment Construction

[0018] The device for correcting computer time by using 1PPS signal provided by the invention includes a 1PPS signal conversion unit and an RS232 serial port connector. The 1PPS signal conversion unit is powered by the RS232 serial port connector, connected to the 1PPS signal output by the GPS receiver, converted from TTL level to RS232 level, and output to the handshake signal line (DSR) of the RS232 serial port connector. The two ends of the RS232 serial port connector are respectively connected to the serial port of the GPS receiver and the serial port of the computer, and ensure that the RS232 level output port of the 1PPS signal is connected to the computer.

[0019] In order to achieve the above object, the method for utilizing 1PPS signal to carry out computer time correction provided by the present invention may further comprise the steps:

[0020] (1) The 1PPS signal line of the GPS receiver is connected to the input end of the 1PPS signal conversion unit;

[0021] (...

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Abstract

The invention provides a computer time correcting device and method by 1PPS (pulses per second) signals. The device is characterized in that a RS 232 serial connector supplies power for a 1PPS signal converting unit, 1PPS signals outputted by a GPS (global position system) receiver are received and outputted to handshaking signal wires of the RS 232 serial connector after being converted into a RS 232 electric level from a TTL electric level, the RS 232 serial connector transmits GPS data outputted by the GPS receiver to a computer through a serial port, the computer finishes time correction next whole second after simultaneously receiving the GPS data and the 1PPS signals. The device is low in cost, simple and convenient to use, high in time correcting accuracy and consistency and good in stability and can meet computer time correcting requirements of multi-operation system platforms of various application fields such as navigation, surveying and mapping and traffic.

Description

technical field [0001] The invention belongs to the field of computer time correction, and relates to a computer time correction device and method, which can be used for different types of computer time correction on various operating system platforms. Background technique [0002] At present, the method for computer time calibration is mainly through the network time calibration, generally using the NTP protocol to achieve. The NTP protocol is one of the standards used for time synchronization in the Internet, which realizes the time synchronization between the computer and the time server. The time source of the time server can be atomic clock, observatory, satellite or obtained from the Internet, and its time accuracy also depends on the accuracy of the time source. The time server uses the UDP communication method to broadcast time information to computers on the network. After receiving the time information, the computer performs local time adjustment on the computer. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F1/14
CPCG06F1/14
Inventor 张伟王亚军熊帅任小伟
Owner NO 20 RES INST OF CHINA ELECTRONICS TECH GRP