CN101173982A - Electricity-saving method of satellite navigation device - Google Patents

Abstract

The invention provides an electric energy saving method of the satellite navigation device, comprising the following steps: utilizing the global satellite location system module to receive a plurality of groups of position data; providing a storage module to record the position data, and processing the position data by a processing module to generate a position parameter, and judging the displacement status of the satellite navigation device according to the position parameter or at least one threshold value; utilizing the control module to enable the satellite navigation device to execute normal module or electric energy saving module according to the displacement status. The invention has an advantage of saving the consumption of the power supply of the satellite navigation device for the efficacy of automatic electric energy saving.

Description

The electricity saving method of Satellite Navigation Set

[technical field]

The present invention is a kind of electricity saving method, is applied to Satellite Navigation Set, as: the Satellite Navigation Set in order to navigate such as personal digital assistant particularly makes Satellite Navigation Set carry out the electricity saving method of normal mode or battery saving mode about a kind of according to displacement state.

[background technology]

Generally speaking, be at personal digital assistant ((Personal Digital Assistant; The service of satnav is provided PDA), must installs the Global Positioning System (GPS) module and carry out necessary signal emission, receive and handle, obtaining the position coordinates at present place, and carry out navigation work.Global Positioning System (GPS) (Global Position System; GPS) be to build, originally only provide military open to commercial applications among the people up to afterwards by U.S. government.U.S.'s Global Positioning System (GPS) is made up of three parts, first is a space, turn round on six tracks by 24 position location satellites, satellite is with 20,000 kilometers height, and the speed running of the 12 hours earth one circles that detour, can guarantee that so just each satellite can pass through face of land same point in the same time of every day, to constitute the virtual azimuthal coordinates in the space.

In order to prolong the running time of Satellite Navigation Set, power savings is a considerable problem.In above-mentioned Global Positioning System (GPS), system constantly receives positioning signal and upgrades the coordinate of present position, to carry out navigation work.Yet, when the translational speed of car slow, even when stopping, as: long-time traffic congestion, or wait for situations such as traffic lights and roadside parking temporarily, the user does not need navigation information, at this moment, the running of screen backlight module, light emitting module and sound module causes the unnecessary consumption of power supply.

In order to address the above problem, the invention provides a kind of electricity saving method of Satellite Navigation Set, when the translational speed of car slow, even when stopping, control module makes Satellite Navigation Set carry out normal mode or battery saving mode according to displacement state, to save the electrical source consumption of Satellite Navigation Set.

[summary of the invention]

Because the problems referred to above, purpose of the present invention is for providing a kind of electricity saving method of Satellite Navigation Set.Particularly, make Satellite Navigation Set carry out the switching of normal mode and battery saving mode according to the displacement state of location parameter and at least one threshold value judgement Satellite Navigation Set.

For reaching above-mentioned purpose, according to the electricity saving method of the disclosed Satellite Navigation Set of the present invention, Satellite Navigation Set can be personal digital assistant.This electricity saving method comprises the following step: at first, utilize the Global Positioning System (GPS) module to receive some groups of position datas, and position data can be coordinate data.Memory module record position data is provided, and handles position data by processing module, producing location parameter, and location parameter is according to resulting in that position data carries out that at least one algorithm produces.Judge that according to location parameter and the threshold value of at least one as distance or time the displacement state of Satellite Navigation Set is mobile status or halted state.If displacement state is a mobile status, then make Satellite Navigation Set carry out a normal mode, if displacement state is a halted state, then make Satellite Navigation Set carry out a battery saving mode.

From the above mentioned, because of the electricity saving method of the Satellite Navigation Set that discloses according to the present invention.When Satellite Navigation Set during in halted state, close the default at least one module of Satellite Navigation Set, for example: screen backlight module, light emitting module and sound module etc., to save the electrical source consumption of Satellite Navigation Set.

For being had technical characterictic of the present invention and the effect reached, your juror further understands and understanding, and careful with preferred embodiment and cooperate detailed being described as follows.

[description of drawings]

Fig. 1 is the process flow diagram of the electricity saving method of Satellite Navigation Set of the present invention;

Fig. 2 is the control flow chart of normal mode of the present invention;

Fig. 3 is the control flow chart of battery saving mode of the present invention;

Fig. 4 is the process flow diagram that enters battery saving mode of one embodiment of the invention;

Fig. 5 is the process flow diagram that withdraws from battery saving mode of one embodiment of the invention.

[embodiment]

Hereinafter with reference to correlative type, the electricity saving method according to a kind of Satellite Navigation Set of preferred embodiment of the present invention is described.

See also Fig. 1, the process flow diagram for the electricity saving method of Satellite Navigation Set of the present invention comprises the following step at least: launch by beginning, at first must utilize the Global Positioning System (GPS) module to receive some groups of position data S11; Then provide memory module to note down these position datas, and handle these position datas by processing module, producing location parameter S12, this location parameter is according to resulting in that these position datas carry out that at least one algorithm produces; Then judge that according to location parameter and at least one threshold value the displacement state of Satellite Navigation Set is mobile status or halted state S13; Then,, then make Satellite Navigation Set carry out a normal mode,, then make Satellite Navigation Set carry out a battery saving mode S14 if displacement state is a halted state if displacement state is a mobile status; At last, finish whole flow process.Wherein, step S13 regularly carries out according to a Preset Time, and Preset Time can set up on their own by the user, and with second or minute set unit as one.

Above-mentioned position data is coordinate data preferably, threshold value is preferably apart from threshold value or time threshold value, and the amount of variability (variance) of the preferably mean value of these position datas (mean) calculating of algorithm, these position datas calculates or last organizes the calculating that position data subtracts first group of position data.

See also Fig. 2, be the control flow chart of normal mode of the present invention, comprise the following step at least: launch by beginning, as location parameter S21 during greater than threshold value; The displacement state of Satellite Navigation Set is mobile status S22; Then control module makes Satellite Navigation Set carry out normal mode S23 according to mobile status; At last, finish whole flow process.

See also Fig. 3, be the control flow chart of battery saving mode of the present invention, comprise the following step at least: launch by beginning, as location parameter S31 during less than threshold value; The displacement state of Satellite Navigation Set is halted state S32; Then control module makes Satellite Navigation Set carry out battery saving mode S33 according to halted state; At last, finish whole flow process.

The inquiry cycle of general Global Positioning System (GPS) is 3 seconds, represents that promptly Global Positioning System (GPS) module per minute receives 20 groups of position datas.Suppose to be set at 3 meters apart from threshold value, the time threshold value is set at 1 minute.As shown in Figure 4, the process flow diagram that enters battery saving mode for one embodiment of the invention comprises the following step at least: by beginning expansion, when the user is temporarily stopped in the roadside, and Satellite Navigation Set is S41 under normal mode, and this Satellite Navigation Set can be personal digital assistant; Whether the displacement of judging car surpasses 3 meters S42, this step is judged according to 20 groups of location parameters that received in 1 minute by control module, and location parameter is according to resulting in that position data carries out that at least one algorithm produces, and algorithm can be that the amount of variability of mean value calculation, these position datas of these position datas is calculated or last group position data subtracts the calculating of first group of position data; If have, then be judged to be mobile status and Satellite Navigation Set and continue to carry out normal mode S43; If no, then be judged to be halted state and Satellite Navigation Set and enter battery saving mode S44, this battery saving mode is for closing the default at least one module of Satellite Navigation Set, and module can be screen backlight module, light emitting module and sound module; At last, finish whole flow process.

Continuing sees also Fig. 5, and the process flow diagram that withdraws from battery saving mode for one embodiment of the invention comprises the following step at least: by beginning to launch S51 when Satellite Navigation Set enters battery saving mode; Whether the displacement of judging car surpasses 3 meters S42, this step is judged according to 20 groups of location parameters that received in 1 minute by control module, and location parameter is according to resulting in that position data carries out that at least one algorithm produces, and algorithm can be that the amount of variability of mean value calculation, these position datas of these position datas is calculated or last group position data subtracts the calculating of first group of position data; If have, then be judged to be the answer of mobile status and Satellite Navigation Set and be normal mode S52; Continue to carry out battery saving mode S53 if no, then be judged to be halted state and Satellite Navigation Set; At last, finish whole flow process.

Claims (17)

1. the electricity saving method of a Satellite Navigation Set, it is characterized in that: this method comprises the following step:

Utilize a Global Positioning System (GPS) module to receive some groups of position datas;

Provide a memory module to note down these position datas, and handle these position datas, to produce a location parameter by a processing module;

Judge that according to this location parameter and at least one threshold value a displacement state of this Satellite Navigation Set is a mobile status or a halted state; And

If this displacement state is a mobile status, then make this Satellite Navigation Set carry out a normal mode, if this displacement state is a halted state, then make this Satellite Navigation Set carry out a battery saving mode;

2. the electricity saving method of Satellite Navigation Set according to claim 1, it is characterized in that: wherein this Satellite Navigation Set is a personal digital assistant.

3. the electricity saving method of Satellite Navigation Set according to claim 1, it is characterized in that: wherein this position data is a coordinate data.

4. the electricity saving method of Satellite Navigation Set according to claim 1 is characterized in that: wherein more comprise according to resulting in as this location parameter that these position datas carry out that at least one algorithm produces.

5. as the electricity saving method of Satellite Navigation Set as described in the claim 4, it is characterized in that: wherein this algorithm is that a mean value calculation is as this algorithm.

6. as the electricity saving method of Satellite Navigation Set as described in the claim 4, it is characterized in that: wherein this algorithm is that an amount of variability is calculated.

7. as the electricity saving method of Satellite Navigation Set as described in the claim 4, it is characterized in that: wherein this algorithm is that an initial value subtracts the most last value and calculates.

8. the electricity saving method of Satellite Navigation Set according to claim 1 is characterized in that: wherein this threshold value is one apart from a threshold value or a time threshold value.

9. the electricity saving method of Satellite Navigation Set according to claim 1 is characterized in that: wherein more comprise if this location parameter, is then set this displacement state greater than this threshold value and be this mobile status.

10. the electricity saving method of Satellite Navigation Set according to claim 1 is characterized in that: wherein more comprise if this location parameter, is then set this displacement state less than this threshold value and be this halted state.

11. the electricity saving method of Satellite Navigation Set according to claim 1 is characterized in that: wherein more comprise close this Satellite Navigation Set at least one presetting module as this battery saving mode.

12. as the electricity saving method of Satellite Navigation Set as described in the claim 11, it is characterized in that: wherein this presetting module is a screen backlight module.

13. as the electricity saving method of Satellite Navigation Set as described in the claim 11, it is characterized in that: wherein this presetting module is a light emitting module.

14. as the electricity saving method of Satellite Navigation Set as described in the claim 11, it is characterized in that: wherein this presetting module is a sound module.

15. the electricity saving method of Satellite Navigation Set according to claim 1, it is characterized in that: wherein judging that according to this location parameter and at least one threshold value a displacement state of this Satellite Navigation Set is the step of a mobile status or a halted state, is regularly to carry out according to a Preset Time.

16. as the electricity saving method of Satellite Navigation Set as described in the claim 15, it is characterized in that: wherein this Preset Time is set up on their own by a user.

17. the electricity saving method as Satellite Navigation Set as described in the claim 15 is characterized in that: wherein this Preset Time is with second or minute set unit as one.

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