Low-power-consumption satellite positioning method, and IOT equipment using low-power-consumption satellite positioning method

Abstract

The invention discloses a low-power-consumption satellite positioning method, and relates to the field of IOT equipment. The low-power-consumption satellite positioning method comprises the steps of:obtaining a long-term ephemeris through wireless communication by utilizing complete machine equipment, and storing in a storage module; and then, injecting the long-term ephemeris into a satellite positioning module, and obtaining a navigation message by resolving. The invention further provides IOT equipment using the low-power-consumption satellite positioning method. The IOT equipment comprises a communication module, the storage module and the satellite positioning module; the communication module is used for obtaining the long-term ephemeris; the storage module is used for storing the long-term ephemeris; and the satellite positioning module is used for resolving the navigation message. According to the low-power-consumption satellite positioning method, and the IOT equipment using the low-power-consumption satellite positioning method in the invention, the long-term ephemeris, instead of a real-time satellite broadcast ephemeris, is utilized; the long-term ephemeris is accessedby utilization of the complete machine equipment; direct access of the satellite positioning module is not used; therefore, satellite positioning at each time is in a hot start mode; the positioning rate is high; the positioning time is short; power consumption in a satellite positioning process is greatly reduced; and application of a satellite navigation positioning technology in the IOT equipment having ultra-low power consumption requirement is enlarged.

Description

technical field [0001] The invention relates to the field of Internet of Things devices, in particular to a low-power consumption satellite positioning method and an Internet of Things device using the method. Background technique [0002] Satellite positioning receiving equipment generally has two startup methods, one is hot startup and the other is cold startup. At cold start, because there is no valid navigation message in the receiving device, the search is restarted using the system default information, and it is necessary to try to locate and lock the satellite again, using a method similar to polling to lock the signal from all satellites, which will take For a long time, the receiving device is always in a high power consumption state. If the satellite signal is weak, the receiving device cannot quickly locate it, and it takes a long time, so that the receiving device cannot enter low power consumption. During hot start, the receiving device has a relatively comple...

AI Technical Summary

Problems solved by technology

For Internet of Things devices that use satellite navigation and positioning technology and have ground communication functions, due to the limitation of satellite navigation and positioning due to the expiration of navigation messages and the difficulty of receiving navigation messages with weak signals quickly, the positioning time is relatively long, resulting in the satellite positioning of the Internet of Things devices. The module is in a long-term working state and cannot achieve power saving, which greatly limits the application of navigation and positioning in IoT devices with extremely low power consumption requirements

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