CN202837548U

CN202837548U - Power consumption controlling device during GPS positioning operation process

Info

Publication number: CN202837548U
Application number: CN 201220434402
Authority: CN
Inventors: 羊晓宁
Original assignee: GUANGZHOU STARWARE TECHNOLOGY Ltd
Current assignee: GUANGZHOU STARWARE TECHNOLOGY Ltd
Priority date: 2012-08-29
Filing date: 2012-08-29
Publication date: 2013-03-27
Anticipated expiration: 2022-08-29

Abstract

The utility model discloses a power consumption controlling device during a GPS positioning operation process, which comprises a GPS module, a power supply circuit and a CPU. The CPU and the GPS module are in line connection. The power supply circuit supplies power to the GPS module and the CPU. Common data exchanges are performed between the CPU and the GPS module. The CPU also reads and stores ephemeris data of the GPS module and data about the current moving state of the GPS module and further provides auxiliary data for the GPS module for calculation during a next GPS positioning operation process. The power supply circuit supplies working voltages to the module when the GPS module is started and further supplies maintaining voltages to the GPS module for storing ephemeris data and the moving states. By improving the GPS positioning operation mode, the power consumption controlling device is enabled to make the power consumed during the GPS positioning operation process reduced to less than one tenth that of an original consumed power and further lower the total power consumption of a GPRS/GPS tracker. The power consumption controlling device thus achieves low power consumption.

Description

Power consumption control apparatus during the GPS positioning action

Technical field

The utility model relates to the tracker technical field, the technology of the power consumption control apparatus when being specifically a kind of GPS positioning action.

Background technology

General GPS tracker when carrying out the GPS positioning action, has great dependence for the almanac data of gps satellite system.In the container tracking device, although the applicant has invented the control technology of remarkable reduction GPRS module dissipation, realized long-time for container, even the tracking of ultra-long time, monitoring and antitheft, but the power consumption during GPS module positioning action also is very large, and the power consumption when sometimes launching than GPRS is also large, so that whole product is difficult to realize the requirement of little power consumption, had influence on the technical indicator of whole product.According to the test findings of the container tracking device of applicant's extremely low power dissipation, if adopt traditional GPS positioning action pattern, the power consumption of a GPS location is slightly larger than the power consumption of a GPRS emission.Therefore, although reduced the power consumption of GPRS module,, total power consumption but has been subject to the impact of GPS positioning action, so that the working time of tracker shortens, emitting times reduces, and technical indicator is not fully up to expectations.

Summary of the invention

Power consumption control apparatus when the purpose of this utility model provides a kind of GPS positioning action, greatly reduce the power consumption of tracker positioning action, simultaneously, significantly reduce the power consumption of tracker, prolong the working time of tracker, so that whole tracker is realized the requirement of little power consumption.

Power consumption control apparatus during a kind of GPS positioning action, it is characterized in that: the power consumption control apparatus during described GPS positioning action comprises the GPS module, power circuit and CPU, connection between CPU and the GPS module, GPS module and CPU power by power circuit, wherein carry out the general data exchange between CPU and the GPS module, CPU can read and preserve for the almanac data of GPS module and the motion state of Current GPS module in addition, and when GPS positioning action next time, offer the GPS module as the auxiliary data of calculating, power circuit is not only when the GPS module starts, provide operating voltage to module, also will provide the voltage of keeping of preserving almanac data and motion state to the GPS module simultaneously.

The general data exchange of carrying out between described CPU and the GPS module is exactly that the GPS module can be issued CPU with routine informations such as longitude and latitude, speed according to instruction after CPU sends the data reading command.

Described CPU is connected by between circuit and the GPRS module, passes through connection between GPRS module and the GPS module.

When the GPS almanac data after described the processing is no more than 3 hours at the interval, as the auxiliary basis of GPS positioning action each time, the described each time auxiliary basis of GPS positioning action of rear GPS exercise data conduct of processing, under the reference of almanac data and GPS block motion data, make under the condition that the GPS positioning action is no more than 3 hours in the location of two minor ticks, always be in the warm start state.

The utility model compared with prior art has the following advantages.

The utility model has improved GPS positioning action pattern, so that the power-dissipation-reduced of GPS positioning action has arrived is original below 1/10, has further reduced the total power consumption of GPRS/GPS tracker, has realized the requirement of little power consumption.

By technology of the present utility model, the operation power consumption of GPS location is reduced to original 1/10, compare with the power consumption of a GPRS emission, can ignore from roughly the same being reduced to.Like this, in the situation that use same capacity battery, almost the working time with tracker has prolonged one times, and emitting times has almost increased by one times.Obtained very gratifying technical indicator.Because by corresponding experiment relatively: general GPS/GPRS tracker, one-time positioning also sends the operation of positional information, the power consumption of GPS location is slightly larger than the power consumption of a GPRS emission, after technical scheme described in the utility model, the power consumption of a GPS location is far smaller than the power consumption of a GPRS module emission, almost can ignore, like this, further reduce the power consumption of GPS/GPRS tracker, reached better performance index.Therefore compare with the design of common GPS tracker, technical scheme described in the utility model has significantly reduced the power consumption of GPS positioning action, the performance index of battery-operated GPS/GPRS tracker have further been improved, under the condition of the battery that uses same capacity, emitting times can increase about one times, in other words, the working time can prolong one times.

Description of drawings

Power consumption control apparatus functional-block diagram when Fig. 1 is the utility model GPS positioning action.

Fig. 2 is that the utility model relates to the operation chart of preserving almanac data and GPS movable information.

Embodiment

Power consumption control apparatus below in conjunction with accompanying drawing during to the utility model GPS positioning action is described in further detail.

Such as Fig. 1, power consumption control apparatus during the utility model GPS positioning action, comprise GPRS module, GPS module, power circuit and CPU, connection between CPU and the GPRS module, connection between CPU and the GPS module, connection between GPRS module and the GPS module, GPRS module, GPS module and CPU power by power circuit, under CPU control the GPS almanac data are processed and are preserved and the motion state of GPS module is processed and preserved.When the GPS almanac data after wherein processing is no more than 3 hours at the interval, as the auxiliary basis of GPS positioning action each time, process the each time auxiliary basis of GPS positioning action of rear GPS exercise data conduct, make under the condition that the GPS positioning action is no more than 3 hours in the location of two minor ticks, always be in the warm start state.

By such as Fig. 2, can obtain following relation:

1) power supply and GPS module be connected with two lines, show that power supply not only will when the GPS module starts, provide operating voltage to module.Also to provide the voltage of keeping of preserving almanac data and motion state to the GPS module simultaneously.This is important technical measures.

2) two pairs of bidirectional connecting lines between CPU and GPS module, have been drawn.A pair of connecting line has represented the general data exchange between CPU and the GPS module, and exactly after CPU sends the data reading command, the GPS module can be issued CPU with routine informations such as longitude and latitude, speed according to instruction.A pair of line has represented that CPU can read and preserve for almanac data and the current motion state of GPS module according to " gps data is processed and preserved function " this specially designed software in the CPU in addition.Simultaneously, when GPS positioning action next time, offer the GPS module as the auxiliary data of calculating.Like this, because the support of auxiliary data having been arranged, the calculating of GPS module does not just need all almanac datas of repeated downloads, does not need a cold start-up of repetition, but can enter the warm start state immediately.

Adopt technology of the present utility model, the operation power consumption of GPS location is reduced to original 1/10, compare with the power consumption of a GPRS emission, can ignore from roughly the same being reduced to.Like this, in the situation that use same capacity battery, almost the working time with tracker has prolonged one times, and emitting times has almost increased by one times.Obtained very gratifying technical indicator.

When the GPS positioning action, for the almanac data of gps satellite system great dependence is arranged, relate to the knowwhy of a series of GPS location here.Two kinds of patterns of cold start-up and warm start are generally arranged during the GPS positioning action.In very short in the interval time of locating each time, the GPS module can be in the pattern of warm start, and the duration only has 3 seconds.But the time of cold start-up is very long, is generally more than 30 seconds.Large 10 times of the power consumption of the power dissipation ratio warm start pattern of cold start mode in other words.

According to the theory of GPS location, when carrying out a GPS positioning action:

1) the GPS module need to record original almanac data, if the interval time of twice location is long, just need to again download almanac data.

2) the GPS module need to have the accurately information of current location, speed and time.

3) after having determined current day aerial satellite, need to download relevant almanac data, if there is not historical summary, just needs time of 30 seconds to carry out complete almanac data and download, this reason that namely why cold start-up need to more than 30 seconds time.And whether need to carry out complete data download, depend on whether current satellite once saw the satellite of being.In general, saw once that the almanac data of the satellite of being can be kept approximately 3 hours, will decay subsequently.That is to say, for processing and the preservation of ephemeris historical data, can have influence on is to enter cold start, still can remain on the warm start state.

In theory, if the almanac data of record that can be appropriate, preservation satellite, the almanac data of the satellite of constantly seeing on high for difference is reasonably processed, just might in the considerable time interval (being generally 3 hours), can guarantee that still the GPS module keeps the state of warm start.If there is not the technology of this respect, general GPS module is merely able to when a few minutes or tens minutes intervals, keeps warm start.

Technical essential of the present utility model is, conduct in-depth research for the GPS almanac data, relation for GPS module current location information and almanac data conducts in-depth research, preservation, the disposal route of the almanac data of the satellite of constantly seeing from sky for two different location conduct in-depth research, and have processed emphatically following two problems:

1) carry out necessary processing and preservation for the GPS almanac data, like this, for the interval between per twice location less than 3 hours situation under, GPS has been positioned with almanac data as auxiliary, the needed time greatly reduces, power consumption greatly reduces in other words.

2) carry out necessary processing and preservation for the motion state of GPS module, these data can be used as the next time reference of GPS positioning action, and the result has shortened the time of positioning action greatly, and power consumption greatly reduces in other words.

The synthesis result of technical scheme described in the utility model is exactly, when being no more than 3 hours at the interval, and GPS positioning action each time, there has been almanac data as a reference, GPS block motion data arranged again as a reference, therefore, the speed of positioning action is very fast, is slightly less than 3 seconds of warm start.Compare with general cold start-up, reduced to positioning time below 1/10, the power consumption of one-time positioning has also dropped to below 1/10.

By corresponding experiment relatively: general GPS/GPRS tracker, one-time positioning also sends the operation of positional information, and the power consumption of GPS location is slightly larger than the power consumption of a GPRS emission.After technical scheme described in the utility model, the power consumption of a GPS location is far smaller than the power consumption of a GPRS module emission, almost can ignore.Like this, further reduce the power consumption of GPS/GPRS tracker, reached better performance index.Compare with the design of common GPS tracker, technical scheme described in the utility model has significantly reduced the power consumption of GPS positioning action, has further improved the performance index of battery-operated GPS/GPRS tracker.Under the condition of the battery that uses same capacity, emitting times can increase about one times, and in other words, the working time can prolong one times.

The below is in the performance history of battery-operated GPS/GPRS tracker, has carried out actual checking for technical scheme described in the utility model.The result of checking is as follows:

If not adopting technical scheme described in the utility model, carry out simultaneously GPS location and GPRS emission, can measure a corresponding emitting times.Adopted after the technical scheme described in the utility model, under same condition, carried out simultaneously the emission of GPS positioning action and positional information, emitting times has improved more than 2 times.Show that power consumption significantly descends, working time significant prolongation has in other words improved the performance of battery-operated GPS/GPRS tracker greatly.

Claims

1. the power consumption control apparatus during a GPS positioning action, it is characterized in that: the power consumption control apparatus during described GPS positioning action comprises GPS module, power circuit and CPU, connection between CPU and the GPS module, GPS module and CPU power by power circuit,

Wherein carry out the general data exchange between CPU and the GPS module, CPU can read and preserve for the almanac data of GPS module and the motion state of Current GPS module in addition, and when GPS positioning action next time, offer the GPS module as the auxiliary data of calculating

Power circuit not only when the GPS module starts, provides operating voltage to module, also will provide the voltage of keeping of preserving almanac data and motion state to the GPS module simultaneously.

2. the power consumption control apparatus during GPS positioning action according to claim 1 is characterized in that: described CPU is connected by between circuit and the GPRS module, passes through connection between GPRS module and the GPS module.