CN105676242B - A kind of Satellite Navigation Set and its low-power consumption treatment method - Google Patents
A kind of Satellite Navigation Set and its low-power consumption treatment method Download PDFInfo
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- CN105676242B CN105676242B CN201610235434.9A CN201610235434A CN105676242B CN 105676242 B CN105676242 B CN 105676242B CN 201610235434 A CN201610235434 A CN 201610235434A CN 105676242 B CN105676242 B CN 105676242B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S19/00—Satellite radio beacon positioning systems; Determining position, velocity or attitude using signals transmitted by such systems
- G01S19/01—Satellite radio beacon positioning systems transmitting time-stamped messages, e.g. GPS [Global Positioning System], GLONASS [Global Orbiting Navigation Satellite System] or GALILEO
- G01S19/13—Receivers
- G01S19/34—Power consumption
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S19/00—Satellite radio beacon positioning systems; Determining position, velocity or attitude using signals transmitted by such systems
- G01S19/01—Satellite radio beacon positioning systems transmitting time-stamped messages, e.g. GPS [Global Positioning System], GLONASS [Global Orbiting Navigation Satellite System] or GALILEO
- G01S19/13—Receivers
- G01S19/35—Constructional details or hardware or software details of the signal processing chain
- G01S19/37—Hardware or software details of the signal processing chain
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- Engineering & Computer Science (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Signal Processing (AREA)
- Position Fixing By Use Of Radio Waves (AREA)
Abstract
The embodiment of the present invention provides a kind of Satellite Navigation Set and its low-power consumption treatment method, and wherein device includes: RF hardware；Base-Band Processing hardware, including baseband signal processing unit and CPU element, the CPU element further includes power consumption control unit, low-power consumption mode of the power consumption control unit for Satellite Navigation Set makes to can control, when entering low-power consumption mode, RF hardware and baseband signal processing unit are closed, and CPU element is in discontinuous operation state；When exiting low-power consumption mode, RF hardware and baseband signal processing unit are opened, and CPU element is in normal operating conditions.The embodiment of the present invention can reduce the operating power consumption of Satellite Navigation Set under the premise of guaranteeing that Satellite Navigation Set is high performance.
Description
Technical Field
The embodiment of the invention relates to the technical field of satellite navigation, in particular to a satellite navigation device and a low-power-consumption processing method thereof.
Background
The satellite navigation technology is a popular field of competitive development of all aerospace big countries, and in order to keep the advancement and the effectiveness of a navigation system, all countries in the world are pushed and developed in an area of a satellite navigation system related technology. Currently, there are four main communication systems in the world that can provide precise Satellite positioning and Navigation, which are the Global Positioning System (GPS) in the united states, the GLONASS (GLONASS) positioning System in russia, the GALILEO (GALILEO) positioning System in europe, and the BeiDou Navigation Satellite System in china.
The satellite navigation application industry plays an increasingly important role in national economy, and satellite navigation can be compatible and compatible with multiple systems and integrated with mobile communication, so that the system availability is improved, and the application field is very wide, for example, the satellite navigation application industry relates to many aspects such as aviation, sea roads, railways, buildings, telecommunication, electric power and the like.
Satellite navigation generally consists of three parts: the system comprises a space constellation part, a ground monitoring part and a user equipment part. The satellite navigation receiver is the core of a user part, is an interface between a satellite navigation system and the user, is also the most important link of the largest market scale and the most important industrialization, and can be said that the value of the satellite navigation application can be realized only by using the satellite navigation receiver by the user.
Although satellite navigation devices, such as satellite navigation receivers, are increasingly integrated into our lives, the current satellite navigation devices neglect the influence of power consumption under the premise of pursuing high performance, and the problem of power consumption becomes a primary problem which hinders the wide application of the satellite navigation devices, thereby greatly limiting the application space of the satellite navigation devices.
Disclosure of Invention
The embodiment of the invention provides a satellite navigation device and a power consumption processing method thereof, which can reduce the working power consumption of the satellite navigation device on the premise of ensuring the high performance of the satellite navigation device.
The embodiment of the invention provides a low-power-consumption satellite navigation device, which comprises: the radio frequency hardware is used for converting the received tracking signal of the navigation satellite into an intermediate frequency, and outputting an intermediate frequency digital signal to the baseband processing hardware through digital sampling of an analog signal; the baseband processing hardware comprises a baseband signal processing unit and a CPU unit, wherein the baseband signal processing unit is used for capturing, tracking and text decoding of intermediate frequency digital signals; the CPU unit is used for being responsible for software scheduling of the baseband signal processing unit, positioning resolving of the position, time and speed of the satellite navigation device and outputting a positioning result through an external interface; the CPU unit also comprises a power consumption control unit, the power consumption control unit is used for enabling control of a low power consumption mode of the satellite navigation device, when the satellite navigation device enters the low power consumption mode, the radio frequency hardware and the baseband signal processing unit are closed, and the CPU unit is in an intermittent working state; and when the low power consumption mode is exited, the radio frequency hardware and the baseband signal processing unit are opened, and the CPU is in a normal working state.
Furthermore, the power consumption control unit comprises a monitoring module, a radio frequency control module, a baseband processing control module, a CPU control module and a baseband satellite information prediction module, wherein the monitoring module is used for monitoring the working state of each part of the satellite navigation device and starting the power consumption control unit to enter or exit a low power consumption mode according to the monitoring condition; the radio frequency control module is used for closing the radio frequency hardware when entering a low power consumption mode and opening the radio frequency hardware when exiting the low power consumption mode; the baseband processing control module is used for closing the baseband signal processing unit when entering the low power consumption mode and opening the baseband signal processing unit when exiting the low power consumption mode; the CPU control module is used for controlling the CPU unit to be in an intermittent working state when entering the low power consumption mode and controlling the CPU unit to be in a normal working mode when exiting the low power consumption mode; a baseband satellite information prediction module for predicting low power consumption working time and normal working time
Furthermore, after the power consumption control unit enters a low power consumption mode, the low power consumption working time of the satellite navigation device is predicted according to the signal information and the signal strength of the tracking signal of the navigation satellite; and in the low-power-consumption working time, the radio frequency hardware and the baseband signal processing unit are closed, the CPU unit is controlled to be in an intermittent working state, the baseband satellite information prediction module predicts the tracking information of the satellite signal and performs positioning calculation of the position, time and speed of the satellite navigation device, and the predicted value of the positioning result is stored in the memory of the satellite navigation device.
Further, after the power consumption control unit exits the low power consumption mode, the normal working time of the satellite navigation device is predicted according to the predicted value of the positioning result in the memory, the signal information of the navigation satellite tracking signal and the signal strength; and in the normal working time, the radio frequency hardware and the baseband signal processing unit are opened, the CPU unit is controlled to be in a normal working state, and a positioning result is output according to the received tracking signal of the navigation satellite.
The embodiment of the invention also provides a low-power consumption processing method of the satellite navigation device, which comprises the following steps: the radio frequency hardware converts the received tracking signal of the navigation satellite into an intermediate frequency, and outputs an intermediate frequency digital signal to the baseband processing hardware through digital sampling of an analog signal; a baseband signal processing unit of the baseband processing hardware captures, tracks and decodes the intermediate frequency digital signal, a CPU unit carries out software scheduling on the baseband signal processing unit, carries out positioning calculation on the position, time and speed of the satellite navigation device and outputs a positioning result through an external interface; the power consumption control unit in the CPU unit controls the enabling of the low power consumption mode of the satellite navigation device, and when the low power consumption mode is entered, the radio frequency hardware and the baseband signal processing unit are closed, and the CPU unit is in an intermittent working state; and when the low power consumption mode is exited, the radio frequency hardware and the baseband signal processing unit are opened, and the CPU is in a normal working state.
Furthermore, a low-power-consumption monitoring module of the power consumption control unit monitors the working state of each part of the satellite navigation device in real time, and starts the power consumption control unit to enter or exit a low-power-consumption mode according to the monitoring condition.
Further, when the navigation satellite enters the low power consumption mode, a baseband satellite information prediction module of the power consumption control unit predicts the low power consumption working time of the satellite navigation device according to the signal information and the signal strength of the navigation satellite tracking signal; and in the low-power-consumption working time, the radio frequency hardware and the baseband signal processing unit are closed, the CPU unit is controlled to be in an intermittent working state, the baseband satellite information prediction module predicts the tracking information of the satellite signal and performs positioning calculation of the position, time and speed of the satellite navigation device, and the predicted value of the positioning result is stored in the memory of the satellite navigation device.
Further, after the power consumption control unit exits the low power consumption mode, the normal working time of the satellite navigation device is predicted according to the predicted value of the positioning result in the memory, the signal information of the navigation satellite tracking signal and the signal strength; and in the normal working time, the radio frequency hardware and the baseband signal processing unit are opened, the CPU unit is controlled to be in a normal working state, and a positioning result is output according to the received tracking signal of the navigation satellite.
According to the satellite navigation device and the low-power-consumption processing method thereof provided by the embodiment of the invention, the requirement of reducing the overall power consumption is met by intelligently controlling the low-power mechanism of the navigation device, the working power consumption of the navigation device is greatly reduced on the premise of ensuring the high performance of the satellite navigation device, and a foundation is laid for the wide application and popularization of the satellite navigation device.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
Drawings
The accompanying drawings are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the example serve to explain the principles of the invention and not to limit the invention.
FIG. 1 is a schematic structural diagram of a low power consumption satellite navigation device according to an embodiment of the present invention;
fig. 2 is a flowchart illustrating a low power consumption processing method of a satellite navigation device according to an embodiment of the invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be noted that the embodiments and features of the embodiments of the present invention may be arbitrarily combined with each other without conflict.
The steps illustrated in the flow charts of the figures may be performed in a computer system such as a set of computer-executable instructions. Also, while a logical order is shown in the flow diagrams, in some cases, the steps shown or described may be performed in an order different than here.
Fig. 1 is a schematic structural diagram of a low power consumption satellite navigation device according to an embodiment of the present invention, and as shown in fig. 1, the satellite navigation device includes radio frequency hardware 11, baseband processing hardware 12, and an external interface 13.
Wherein,
the radio frequency hardware 11 is used for converting a tracking signal of a navigation satellite received by an antenna to an intermediate frequency, and then outputting an intermediate frequency digital signal to the baseband processing hardware 12 through digital sampling of an analog signal;
a baseband processing hardware 12 including a baseband signal processing unit 13 and a CPU unit 14;
the baseband signal processing unit 13 is used for capturing, tracking and text decoding of the intermediate frequency digital signal;
the CPU unit 14 is responsible for software scheduling of the baseband signal processing unit, positioning and resolving of the position, time, and speed of the satellite navigation device, and controlling external communication of the peripheral interface;
further, the CPU unit 14 includes a power consumption control unit 15, and the power consumption control unit 15 is used for enabling control of the low power consumption mode of the satellite navigation apparatus.
And the peripheral interface 16 is used for communicating with the upper application device and outputting a positioning result.
It is worth noting that the processing power consumption of the radio frequency hardware 11 and the baseband processing hardware 12 accounts for more than 90% of the total power consumption of the navigation device, therefore, compared with the prior art, the power consumption control unit 15 is added in the CPU unit 122, and the power consumption control unit 15 can effectively reduce the overall processing power consumption of the navigation device by intelligently controlling the switch working time sequence of the radio frequency hardware 11 and the baseband processing hardware 12.
It should be detailed that the power consumption control unit includes a monitoring module, a radio frequency control module, a baseband processing control module, a baseband satellite information prediction module, and a CPU control module.
Wherein,
and the monitoring module is used for monitoring the working state of software and hardware of each part so as to judge whether to enter or exit the low power consumption mode.
And the radio frequency control module is used for controlling the on-off of the radio frequency hardware through a radio frequency interface protocol, when the radio frequency is closed, a radio frequency hardware circuit is in a sleep state, and the power consumption is only concentrated on small leakage current.
And the baseband processing control module is used for orderly switching on and off the baseband processing hardware, so that the processing power consumption is reduced.
And the baseband satellite information prediction module is used for predicting the tracking information of the satellite signal of the baseband processing hardware from the closing time to the opening time and calculating the position and the speed of the navigation device, so that the continuity of signal processing after the switching of the closing state and the opening state of the radio frequency hardware and the baseband processing unit is ensured.
And the CPU control module is used for enabling the CPU to enter a low-power consumption processing mode, and when the radio frequency hardware and the baseband processing unit are switched off to sleep, the software processing load of the CPU unit is reduced, so that the CPU is in an intermittent working state, and the working power consumption of the CPU is reduced.
Fig. 2 is a schematic flow chart of a power consumption processing method of a satellite navigation device according to an embodiment of the present invention, as shown in fig. 2, the method is applied to the satellite navigation device, and includes:
step 21, the radio frequency hardware converts the received tracking signal of the navigation satellite into an intermediate frequency, and outputs an intermediate frequency digital signal to the baseband processing hardware through digital sampling of an analog signal;
step 22, a baseband signal processing unit of baseband processing hardware captures, tracks and decodes the intermediate frequency digital signal, a CPU unit carries out software scheduling on the baseband signal processing unit, carries out positioning calculation on the position, time and speed of the satellite navigation device, and outputs a positioning result through an external interface;
step 23, the power consumption control unit in the CPU unit performs enabling control of the low power consumption mode of the satellite navigation device, and when entering the low power consumption mode, turns off the radio frequency hardware and the baseband signal processing unit, and puts the CPU unit in an intermittent working state; and when the low power consumption mode is exited, the radio frequency hardware and the baseband signal processing unit are opened, and the CPU is in a normal working state.
In particular, the amount of the solvent to be used,
and a low-power consumption monitoring module of the power consumption control unit monitors the working state of each part of the satellite navigation device in real time, and starts the power consumption control unit to enter or exit a low-power consumption mode according to the monitoring condition.
When the navigation satellite enters the low power consumption mode, a baseband satellite information prediction module of the power consumption control unit predicts the low power consumption working time of the satellite navigation device according to the signal information and the signal strength of the tracking signal of the navigation satellite; and in the low-power-consumption working time, the radio frequency hardware and the baseband signal processing unit are closed, the CPU unit is controlled to be in an intermittent working state, the baseband satellite information prediction module predicts the tracking information of the satellite signal and performs positioning calculation of the position, time and speed of the satellite navigation device, and the predicted value of the positioning result is stored in the memory of the satellite navigation device, so that the continuity of signal processing after the switching of the closing state and the opening state of the radio frequency hardware and the baseband processing unit is ensured.
After the power consumption control unit exits the low power consumption mode, predicting the normal working time of the satellite navigation device according to the predicted value of the positioning result in the memory, the signal information of the navigation satellite tracking signal and the signal strength; and in the normal working time, the radio frequency hardware and the baseband signal processing unit are opened, the CPU unit is controlled to be in a normal working state, and a positioning result is output according to the received tracking signal of the navigation satellite.
The satellite navigation device normally processes satellite navigation signals according to the sequence, so that the satellite navigation device can work in a low power consumption mode with high performance.
According to the satellite navigation device and the low-power-consumption processing method thereof provided by the embodiment of the invention, the requirement of reducing the overall power consumption is met by intelligently controlling the low-power mechanism of the navigation device, the working power consumption of the navigation device is greatly reduced on the premise of ensuring the high performance of the satellite navigation device, and a foundation is laid for the wide application and popularization of the satellite navigation device.
The above-described embodiments of the apparatus are merely illustrative, and the units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment. One of ordinary skill in the art can understand and implement it without inventive effort.
Through the above description of the embodiments, those skilled in the art will clearly understand that each embodiment can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware. With this understanding in mind, the above-described technical solutions may be embodied in the form of a software product, which can be stored in a computer-readable storage medium such as ROM/RAM, magnetic disk, optical disk, etc., and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute the methods described in the embodiments or some parts of the embodiments.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (6)
1. A low power consumption satellite navigation device, comprising:
the radio frequency hardware is used for converting the received tracking signal of the navigation satellite into an intermediate frequency, and outputting an intermediate frequency digital signal to the baseband processing hardware through digital sampling of an analog signal;
the baseband processing hardware comprises a baseband signal processing unit and a CPU unit, wherein the baseband signal processing unit is used for capturing, tracking and text decoding of intermediate frequency digital signals; the CPU unit is used for being responsible for software scheduling of the baseband signal processing unit, positioning resolving of the position, time and speed of the satellite navigation device and outputting a positioning result through an external interface;
the CPU unit also comprises a power consumption control unit, the power consumption control unit is used for enabling control of a low power consumption mode of the satellite navigation device, when the satellite navigation device enters the low power consumption mode, the radio frequency hardware and the baseband signal processing unit are closed, and the CPU unit is in an intermittent working state; when the low power consumption mode exits, the radio frequency hardware and the baseband signal processing unit are opened, and the CPU unit is in a normal working state;
after the power consumption control unit enters a low power consumption mode, predicting the low power consumption working time of the satellite navigation device according to the signal information and the signal strength of the tracking signal of the navigation satellite;
and in the low-power-consumption working time, the radio frequency hardware and the baseband signal processing unit are closed, the CPU unit is controlled to be in an intermittent working state, the baseband satellite information prediction module predicts the tracking information of the satellite signal and performs positioning calculation of the position, time and speed of the satellite navigation device, and the predicted value of the positioning result is stored in the memory of the satellite navigation device.
2. The low power consumption satellite navigation device according to claim 1, wherein the power consumption control unit comprises a monitoring module, a radio frequency control module, a baseband processing control module, a CPU control module, and a baseband satellite information prediction module, wherein,
the monitoring module is used for monitoring the working state of each part of the satellite navigation device and starting the power consumption control unit to enter or exit the low power consumption mode according to the monitoring condition;
the radio frequency control module is used for closing the radio frequency hardware when entering a low power consumption mode and opening the radio frequency hardware when exiting the low power consumption mode;
the baseband processing control module is used for closing the baseband signal processing unit when entering the low power consumption mode and opening the baseband signal processing unit when exiting the low power consumption mode;
the CPU control module is used for controlling the CPU unit to be in an intermittent working state when entering the low power consumption mode and controlling the CPU unit to be in a normal working mode when exiting the low power consumption mode;
and the baseband satellite information prediction module is used for predicting the low-power-consumption working time and the normal working time.
3. The low power consumption satellite navigation device according to claim 1, wherein after the power consumption control unit exits the low power consumption mode, the normal operation time of the satellite navigation device is predicted according to the predicted value of the positioning result in the memory, the signal information of the tracking signal of the navigation satellite and the signal strength;
and in the normal working time, the radio frequency hardware and the baseband signal processing unit are opened, the CPU unit is controlled to be in a normal working state, and a positioning result is output according to the received tracking signal of the navigation satellite.
4. A low-power processing method of a satellite navigation device is characterized by comprising the following steps:
the radio frequency hardware converts the received tracking signal of the navigation satellite into an intermediate frequency, and outputs an intermediate frequency digital signal to the baseband processing hardware through digital sampling of an analog signal;
a baseband signal processing unit of the baseband processing hardware captures, tracks and decodes the intermediate frequency digital signal, a CPU unit carries out software scheduling on the baseband signal processing unit, carries out positioning calculation on the position, time and speed of the satellite navigation device and outputs a positioning result through an external interface;
the power consumption control unit in the CPU unit controls the enabling of the low power consumption mode of the satellite navigation device, and when the low power consumption mode is entered, the radio frequency hardware and the baseband signal processing unit are closed, and the CPU unit is in an intermittent working state; when the low power consumption mode exits, the radio frequency hardware and the baseband signal processing unit are opened, and the CPU unit is in a normal working state;
when the navigation satellite enters the low power consumption mode, a baseband satellite information prediction module of the power consumption control unit predicts the low power consumption working time of the satellite navigation device according to the signal information and the signal strength of the tracking signal of the navigation satellite;
and in the low-power-consumption working time, the radio frequency hardware and the baseband signal processing unit are closed, the CPU unit is controlled to be in an intermittent working state, the baseband satellite information prediction module predicts the tracking information of the satellite signal and performs positioning calculation of the position, time and speed of the satellite navigation device, and the predicted value of the positioning result is stored in the memory of the satellite navigation device.
5. The low power consumption processing method of the satellite navigation device according to claim 4, wherein the low power consumption monitoring module of the power consumption control unit monitors the working state of each part of the satellite navigation device in real time, and starts the power consumption control unit to enter or exit the low power consumption mode according to the monitoring condition.
6. The low power consumption processing method of the satellite navigation device according to claim 4, wherein after the power consumption control unit exits the low power consumption mode, the normal operation time of the satellite navigation device is predicted according to the predicted value of the positioning result in the memory, the signal information of the tracking signal of the navigation satellite and the signal strength;
and in the normal working time, the radio frequency hardware and the baseband signal processing unit are opened, the CPU unit is controlled to be in a normal working state, and a positioning result is output according to the received tracking signal of the navigation satellite.
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| WO2019119221A1 (en) * | 2017-12-18 | 2019-06-27 | 深圳市大疆创新科技有限公司 | Method for controlling movable platform and movable platform |
| CN108802774A (en) * | 2018-05-30 | 2018-11-13 | 北京航空航天大学 | A kind of GPS navigation baseband system grade chip |
| CN110398757A (en) * | 2019-07-31 | 2019-11-01 | 杭州中科微电子有限公司 | A kind of low-power consumption satellite positioning method and the internet of things equipment using this method |
| CN114740789B (en) * | 2022-05-10 | 2024-04-19 | 中科星图深海科技有限公司 | Light long-range AUV control system supporting double working modes |
| CN115718314A (en) * | 2022-10-18 | 2023-02-28 | 芯与物(上海)技术有限公司 | Double-frequency receiver system and working method thereof |
| CN117761742A (en) * | 2023-12-25 | 2024-03-26 | 河南芯港半导体有限公司 | Satellite navigation positioning device and power consumption processing method |
| CN120928394B (en) * | 2025-10-10 | 2026-01-23 | 湖南中森通信科技有限公司 | A low-power navigation baseband chip and its operation method |
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