CN104749592A - GPS navigation system having power-saving function and power saving method therefor - Google Patents
GPS navigation system having power-saving function and power saving method therefor Download PDFInfo
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- CN104749592A CN104749592A CN201310754414.9A CN201310754414A CN104749592A CN 104749592 A CN104749592 A CN 104749592A CN 201310754414 A CN201310754414 A CN 201310754414A CN 104749592 A CN104749592 A CN 104749592A
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- temporary storage
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- gps navigation
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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
Abstract
The invention provides a GPS navigation system having a power-saving function and a power saving method therefor. The power saving method comprises the following steps: a, entering a power saving mode; b, stopping supplying power to a central processing unit and an audio-video unit by a power management unit, and synchronously keeping supplying power to a GPS navigation unit; c, activating a temporary storage unit of the GPS navigation unit, and storing geographic position information acquired by the GPS navigation unit in the temporary storage unit; d, judging whether the temporary storage unit is full, executing step e if it is, otherwise keeping executing step d; e, supplying power to the central processing unit by the power management unit, sending the temporarily stored geographic position information by the temporary storage unit to the central processing unit for processing data and generating navigation information; and f, after receiving a signal of stopping saving the power, stopping the temporary storage unit after sending all geographic position information to the central processing unit, and recovering the power supply of the audio-video unit.
Description
[technical field]
The present invention is a kind of GPS navigation system and electricity saving method thereof with electricity-saving function.
[background technology]
The system of utilize GPS position location satellite, position in real time in the world, navigating, is called Global Positioning System (GPS), is called for short GPS.Along with the development of technology, GPS device is more and more applied in our daily life.The ultimate principle of GPS navigation system is the distance between the satellite of measuring known location to receiver user, and then the data of comprehensive multi-satellite just can know the particular location of receiver.Reach this purpose, the time that the position of satellite can be recorded according to spaceborne clock finds in satellite ephemeris.User then propagates into by record satellite-signal the time that user experiences to the distance of satellite, then is multiplied by the light velocity and obtains.And GPS is in position fixing process, generally can produce a kind of data, NAEA data.NMEA is national Marine Electronics association (National Marine Electronics Association), simultaneously Ye Shi data transmission standard TIA.It contains positioning time, latitude, longitude, highly, locates satellite number used, DOP value, differential state and correct period etc., other have present satellites information, ground speed information, geo-localisation information.We can preserve these NMEA data according to demand, and general navigation map is all obtain our current location, the information such as speed according to these NMEA data, on map, then draws out our position, course etc.But we, only under the state of start, could preserve NMEA data.But well-known, the flying power of embedded device of today is generally not enough, and the power consumption of GPS is larger, our power saving desire and navigation needs conflicting, present GPS device can not accomplish both get both.
In view of this, the invention provides a kind of GPS navigation system and the electricity saving method thereof with electricity-saving function, it can be issued to the effect of power saving in the situation not affecting navigation needs.
[summary of the invention]
Fundamental purpose of the present invention is to provide a kind of GPS navigation system and the electricity saving method thereof with electricity-saving function, and it can be issued to the effect of power saving in the situation not affecting navigation needs.
For reaching above-mentioned purpose, the invention provides a kind of GPS navigation system with electricity-saving function, it comprises: power saving trigger module, in order to send power save signal or to terminate power save signal, GPS navigation unit, it obtains geographical location information in order to receive gps satellite navigation signal, described navigation elements is provided with temporary storage location, and described temporary storage location is connected with described power saving trigger element, after receiving power save signal, temporarily store described geographical location information, CPU (central processing unit), it is connected with described GPS navigation unit, generates navigation information for the treatment of described geographical location information, audio frequency and video unit, it is connected with described CPU (central processing unit), for showing and reporting described navigation information, and Power Management Unit, itself and described power saving trigger module, institute's GPS navigation unit, described CPU (central processing unit) and institute's audio frequency and video unit connect, under normality, described Power Management Unit is described GPS navigation unit, described CPU (central processing unit) and described audio frequency and video unit are powered, when after the power save signal receiving power saving trigger module, described Power Management Unit stops remaining GPS navigation unit simultaneously power for described CPU (central processing unit) and described audio frequency and video unit being powered, the temporary storage location of described GPS navigation unit is activated and stores the geographical location information of described navigation elements acquisition, when described temporary storage location is filled with, described Power Management Unit is the energising of described CPU (central processing unit), temporary positional information is passed to described CPU (central processing unit) by described temporary storage location carries out processing and generating navigation information, after receiving the end power save signal that described power saving trigger module sends, described temporary storage location is out of service after all geographical location information are reached described CPU (central processing unit), described Power Management Unit is that described audio frequency and video unit is powered.
Preferably, described temporary storage location is flash memory.
The present invention also provides a kind of above-mentioned electricity saving method with the GPS navigation system of electricity-saving function, described GPS navigation system comprises GPS navigation unit, storage unit, CPU (central processing unit), audio frequency and video unit and Power Management Unit, described electricity saving method comprises the following steps: a. enters battery saving mode by described power saving trigger module; B. described Power Management Unit stops as described CPU (central processing unit), and described audio frequency and video unit is powered, and remains described GPS navigation unit simultaneously and power; C. start the temporary storage location of described GPS navigation unit, described temporary storage location stores the geographical location information that described GPS navigation unit obtains; D. judge whether described temporary storage location is filled with, if so, then perform step e, if not, then continue to perform this step; E. described Power Management Unit is that described CPU (central processing unit) is powered, and temporary geographical location information is reached described CPU (central processing unit) by described temporary storage location to carry out data processing and generates navigation information; And f. is when after the end power save signal receiving the transmission of described power saving trigger module, described temporary storage location is out of service after all geographical location information are reached described CPU (central processing unit), and described Power Management Unit is recovered described audio frequency and video unit and powered.
Compared with prior art, the present invention has GPS navigation system and the electricity saving method thereof of electricity-saving function, its by by with navigation elements beyond all power-off of other power consuming units, the geographical location information that navigation elements is obtained temporarily is stored in the temporary storage location set up, and only have but temporary storage location is filled with time be just CPU (central processing unit) energising, and the geographical location information stored in temporary storage location is passed to CPU (central processing unit) and carry out processing and generating navigation information, but be not audio frequency and video unit or the energising of other auxiliary unit, thus, save electric power, and when user wants to understand current navigation information by navigational system, user is by terminating current battery saving mode, now, because navigation elements has in operation in a power-save mode always, therefore do not affect the continuity of navigation, the path of walking before user still can consult, really the effect of saving electric power when not affecting navigation needs is reached.
[accompanying drawing explanation]
Fig. 1 is the GPS navigation system principle block scheme that the present invention has electricity-saving function.
Fig. 2 is the process flow diagram that the present invention has the electricity saving method of the GPS navigation system of electricity-saving function.
[embodiment]
Refer to shown in Fig. 1, a kind of GPS navigation system with electricity-saving function of the present invention, it comprises power saving trigger module 10, GPS navigation unit 20, CPU (central processing unit) 30, audio frequency and video unit 40, and Power Management Unit 50.
Described power saving trigger module 10, enters battery saving mode in order to triggering system.
Described GPS navigation unit 20, it receives gps satellite navigation signal and obtains geographical location information (NAEA data), described navigation elements 20 is provided with temporary storage location 21, described temporary storage location 21 is connected with described power saving trigger element 10, temporarily described geographical location information is stored after receiving power save signal, in the present embodiment, described temporary storage location 21 is flash memory (flash memory).
Described CPU (central processing unit) 30, it is connected with described GPS navigation unit 20 and generates navigation information for the treatment of described geographical location information.
Described audio frequency and video unit 40 is connected with described CPU (central processing unit) 30, for display and report navigation information.
Described Power Management Unit 50 and described power saving trigger module 10, institute's GPS navigation unit 20, described CPU (central processing unit) 30 and institute's audio frequency and video unit 40 connect, for controlling described GPS navigation unit 20 according to the signal of described power saving trigger module 10, whether the energising of described CPU (central processing unit) 30 and institute's audio frequency and video unit 40.Under normality, described Power Management Unit 50 is described GPS navigation unit 20, described CPU (central processing unit) 30 and described audio frequency and video unit 40 are powered, that is, navigational system normal operation, and when after the power save signal receiving power saving trigger module 10, described Power Management Unit 50 stops powering for described CPU (central processing unit) 30 and described audio frequency and video unit 40, and still power for described GPS navigation unit 20, now, described GPS navigation unit 20 works on, its temporary storage location 21 arranged is activated and temporarily stores described geographical location information, and when described temporary storage location 21 is filled with, described Power Management Unit 50 is energized for described CPU (central processing unit) 30, temporary positional information is passed to described CPU (central processing unit) 30 by described temporary storage location 21 carries out processing and generating navigation information, after receiving the end power save signal that described power saving trigger module 10 sends, described temporary storage location 21 is out of service after all geographical location information being reached described CPU (central processing unit) 30, described Power Management Unit 50 will be powered for described audio frequency and video unit 40, described audio frequency and video unit 40 shows and reports navigation information, now, navigational system is normally run.
Incorporated by reference to consulting shown in Fig. 1 and Fig. 2, a kind of electricity saving method with the GPS navigation system of electricity-saving function of the present invention is reached by the GPS navigation system shown in Fig. 1, and comprises the following steps:
Step 101: enter battery saving mode by power saving trigger module 10: after user opens described GPS navigation system, when finding that GPS navigation system charge is not enough or when wanting to save described GPS navigation systematic electricity, user sends power save signal by power saving trigger module and enters battery saving mode.
Step 102: Power Management Unit 50 stops as CPU (central processing unit) 30, and audio frequency and video unit 40 is powered, and remain GPS navigation unit 20 simultaneously and power.
Step 103: the temporary storage location 21 starting described GPS navigation unit 20, described temporary storage location 21 stores the geographical location information that described GPS navigation unit obtains.
Step 104: judge whether described temporary storage location 21 is filled with, and if so, then performs next step, if not, then continues to perform this step.
Step 105: Power Management Unit 50 is powered for described CPU (central processing unit) 30, temporary geographical location information is reached described CPU (central processing unit) 30 by described temporary storage location 21 to carry out data processing and generates navigation information.
Step 106: when after the end power save signal receiving the transmission of described power saving trigger module 10, all geographical location information reach after described CPU (central processing unit) 30 out of service by described temporary storage location 21, and described Power Management Unit 50 is recovered described audio frequency and video unit 40 and powered simultaneously.
It should be noted that in the process of whole battery saving mode work, described audio frequency and video unit 50 and the never energising of other auxiliary power consuming units, but the geographic position data that GPS navigation unit 20 obtains is processing always, make whole system like this after receiving end battery saving mode trigger pip, the path of walking before user can consult by display, ensure that the continuity of whole navigation procedure, and save electric power.
Claims (4)
1. there is a GPS navigation system for electricity-saving function, it is characterized in that, comprising:
Power saving trigger module, in order to send power save signal or to terminate power save signal;
GPS navigation unit, it obtains geographical location information in order to receive gps satellite navigation signal, described navigation elements is provided with temporary storage location, and described temporary storage location is connected with described power saving trigger element, after receiving power save signal, temporarily store described geographical location information;
CPU (central processing unit), it is connected with described GPS navigation unit, generates navigation information for the treatment of described geographical location information;
Audio frequency and video unit, it is connected with described CPU (central processing unit), for showing and reporting described navigation information; And
Power Management Unit, itself and described power saving trigger module, institute's GPS navigation unit, described CPU (central processing unit) and institute's audio frequency and video unit connect, under normality, described Power Management Unit is described GPS navigation unit, described CPU (central processing unit) and described audio frequency and video unit are powered, when after the power save signal receiving power saving trigger module, described Power Management Unit stops remaining GPS navigation unit simultaneously power for described CPU (central processing unit) and described audio frequency and video unit being powered, the temporary storage location of described GPS navigation unit is activated and stores the geographical location information of described navigation elements acquisition, when described temporary storage location is filled with, described Power Management Unit is the energising of described CPU (central processing unit), temporary positional information is passed to described CPU (central processing unit) by described temporary storage location carries out processing and generating navigation information, after receiving the end power save signal that described power saving trigger module sends, described temporary storage location is out of service after all geographical location information are reached described CPU (central processing unit), described Power Management Unit is that described audio frequency and video unit is powered.
2. the GPS navigation system with electricity-saving function according to claim 1, is characterized in that, described temporary storage location is flash memory.
3. one kind has the electricity saving method of the GPS navigation system of electricity-saving function as claimed in claim 1, described GPS navigation system comprises GPS navigation unit, storage unit, CPU (central processing unit), audio frequency and video unit and Power Management Unit, described electricity saving method comprises the following steps:
A. battery saving mode is entered by described power saving trigger module;
B. described Power Management Unit stops as described CPU (central processing unit), and described audio frequency and video unit is powered, and remains described GPS navigation unit simultaneously and power;
C. start the temporary storage location of described GPS navigation unit, described temporary storage location stores the geographical location information that described GPS navigation unit obtains;
D. judge whether described temporary storage location is filled with, if so, then perform step e, if not, then continue to perform this step;
E. described Power Management Unit is that described CPU (central processing unit) is powered, and temporary geographical location information is reached described CPU (central processing unit) by described temporary storage location to carry out data processing and generates navigation information; And
F. when after the end power save signal receiving the transmission of described power saving trigger module, described temporary storage location is out of service after all geographical location information are reached described CPU (central processing unit), and described Power Management Unit is recovered described audio frequency and video unit and powered.
4. the electricity saving method with the GPS navigation system of electricity-saving function according to claim 3, is characterized in that, described temporary storage location is flash memory.
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| CN201310754414.9A CN104749592A (en) | 2013-12-31 | 2013-12-31 | GPS navigation system having power-saving function and power saving method therefor |
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Cited By (1)
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| US11209555B2 (en) | 2015-09-29 | 2021-12-28 | Huawei Technologies Co., Ltd. | Positioning method and apparatus for mobile terminal, and mobile terminal |
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| EP2009457A2 (en) * | 2007-06-19 | 2008-12-31 | Samsung Electronics Co., Ltd. | Method and apparatus for controlling power supply for speedy acquisition of GPS signal, and GPS receiver having the apparatus |
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| EP2009457A2 (en) * | 2007-06-19 | 2008-12-31 | Samsung Electronics Co., Ltd. | Method and apparatus for controlling power supply for speedy acquisition of GPS signal, and GPS receiver having the apparatus |
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