CN107102631A - A kind of system and method for controlling vehicle mounted guidance terminal cpu frequency and running number - Google Patents
A kind of system and method for controlling vehicle mounted guidance terminal cpu frequency and running number Download PDFInfo
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- CN107102631A CN107102631A CN201710229807.6A CN201710229807A CN107102631A CN 107102631 A CN107102631 A CN 107102631A CN 201710229807 A CN201710229807 A CN 201710229807A CN 107102631 A CN107102631 A CN 107102631A
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- current
- vehicle mounted
- frequency
- mounted guidance
- guidance terminal
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B23/00—Testing or monitoring of control systems or parts thereof
- G05B23/02—Electric testing or monitoring
- G05B23/0205—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults
- G05B23/0208—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults characterized by the configuration of the monitoring system
- G05B23/0213—Modular or universal configuration of the monitoring system, e.g. monitoring system having modules that may be combined to build monitoring program; monitoring system that can be applied to legacy systems; adaptable monitoring system; using different communication protocols
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/20—Pc systems
- G05B2219/24—Pc safety
- G05B2219/24065—Real time diagnostics
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- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
The invention discloses a kind of system and method for controlling vehicle mounted guidance terminal cpu frequency and running number, system includes detection resistance, first voltage Acquisition Circuit, second voltage Acquisition Circuit, current calculation unit and multinuclear frequency modulation unit, current calculation unit is used for the sense of current according to the voltage difference detection stream at detection resistance two ends resistance after testing, and calculates the current value for flowing through detection resistance；The current value that multinuclear frequency modulation unit is used for according to obtained by being calculated default " current strategy " and current calculation unit generates countermeasure, and vehicle mounted guidance terminal CPU dominant frequency and the operation number of multi-core CPU are controlled according to countermeasure.The present invention is when detecting cell current value exception, the core operation number of adjust automatically vehicle mounted guidance terminal CPU frequency and multi-core CPU, navigation terminal electric current can be effectively reduced, effectively reduce terminal power consumption amount, extend vehicle continuation of the journey, and terminal caloric value is also reduced, reduce accident risk.
Description
Technical field
The present invention relates to new-energy automobile continuation of the journey lifting field, more particularly to a kind of control vehicle mounted guidance terminal CPU frequencies
Rate and the system and method for running number.
Background technology
In recent years, air pollution problems inherent is increasingly severe, and wherein motor vehicle exhaust emission is also the important of composition air pollution
One of inducement, under this overall situation, the exploitation of new-energy automobile is increasingly taken seriously, and the use of electric automobile is more and more wider
It is general.But because of the restriction in terms of battery capacity, cell safety and charging pile, cause the bottle of electric automobile course continuation mileage
Neck, this constrains the development of electric automobile significantly.
Current most of vehicles are equipped with vehicle mounted guidance terminal, and vehicle mounted guidance terminal has independent operating system, can
, can be constantly to end by this class method voluntarily to install the program of the third party service providers such as software, game offer by user
The function at end is expanded.With the continuous popularization and fast development of vehicle mounted guidance terminal, terminal screen size is increasing,
Core cpu quantity is also more and more, and the problem of thus bringing is terminal power consumption amount more and more higher, directly influences vehicle continuation of the journey,
And terminal heat condition also aggravates increasingly, huge potential safety hazard is brought.
Chinese patent CN202334663U discloses a kind of Mobile phone current abnormality detection circuit, and there is provided Mobile phone current abnormality
The function of detection, and the abnormal program of user's closing hand phone can be reminded in Mobile phone current abnormality or mobile phone is restarted.The patent application
The defect of presence is as follows：（1）The prompting closed abnormal program or restart mobile phone can only be pushed to user, solution can not be automatically provided
Certainly scheme, Consumer's Experience is unsatisfactory.（2）Mobile phone current can only be entered with the standard consumption electric current in fixed current data storehouse
Row compares, and can only obtain one of " battery current consumption is normal " or " battery current consumption is abnormal " both conclusions, it is impossible to according to
Various current value dynamically adjusts CPU state.
The content of the invention
It is an object of the invention to overcome the deficiencies of the prior art and provide one kind control vehicle mounted guidance terminal cpu frequency and
The system and method for number is run, the core of navigation terminal CPU frequency and multi-core CPU is limited according to vehicle battery size of current
The heart runs number, to reduce system power consumption, increases vehicle cruising time, reduces terminal bulk temperature.
The purpose of the present invention is achieved through the following technical solutions：One kind control vehicle mounted guidance terminal cpu frequency and
Run number system, including detection resistance, first voltage Acquisition Circuit, second voltage Acquisition Circuit, current calculation unit and
Multinuclear frequency modulation unit, the first end of detection resistance is connected with the positive pole of new-energy automobile battery, the second end of detection resistance with
Vehicle current supply circuit is connected, and vehicle current supply circuit is connected with the negative pole of new-energy automobile battery；First voltage Acquisition Circuit connects
Connect the first end of detection resistance, the second end of second voltage Acquisition Circuit connecting detection resistance, first voltage Acquisition Circuit, second
The output end of voltage collection circuit is connected with current calculation unit, output end and the multinuclear frequency modulation unit phase of current calculation unit
Even, multinuclear frequency modulation unit is connected with vehicle mounted guidance terminal CPU；
Current calculation unit is used for the sense of current according to the voltage difference detection stream at detection resistance two ends resistance after testing, and counts
Calculate the current value for flowing through detection resistance；
The current value generation that multinuclear frequency modulation unit is used for according to obtained by being calculated default " current strategy " and current calculation unit should
To strategy, vehicle mounted guidance terminal CPU dominant frequency and the operation number of multi-core CPU are controlled according to countermeasure.
The resistance of the detection resistance is Rs, and the voltage that the first voltage Acquisition Circuit is collected is V1, second voltage
The voltage that Acquisition Circuit is collected is V2, and result of calculation I=(V1-V2)/Rs of current calculation unit, I is that positive number represents new energy
Automobile storage battery discharges, and I charges for negative number representation new-energy automobile battery.
The resistance of the detection resistance is 20mohm.
Vehicle mounted guidance terminal cpu frequency and the method for running number are controlled, is comprised the following steps：
S1：System building；
S2：Configure " current strategy ", the corresponding relation between current value and countermeasure is determined in " current strategy "；
S3：First voltage Acquisition Circuit collection voltages V1, second voltage Acquisition Circuit collection voltages V2；
S4：Current calculation unit obtains result of calculation according to step S3 V1, V2 obtained：I=(V1-V2)/Rs, I represent for positive number
New-energy automobile battery discharging, I charges for negative number representation new-energy automobile battery；
S5：When I is positive number, the current value that multinuclear frequency modulation unit is obtained according to step S2 default " current strategy " and step S4
Countermeasure is generated, controls vehicle mounted guidance terminal CPU to carry out frequency reducing, raising frequency according to countermeasure, pull out core or the operation of slotting core.
Described method, in addition to delay loop step, it is whole to vehicle mounted guidance according to countermeasure in multinuclear frequency modulation unit
CPU is held to perform after adjustment, by default time delay cycling jump to step S3.
Described default time delay is 100ms.
The beneficial effects of the invention are as follows：
（1）Can be according to the core of vehicle battery size of current adjust automatically vehicle mounted guidance terminal CPU frequency and multi-core CPU
Number is run, any auxiliary operation is made without user, Consumer's Experience is good.
（2）The diversified countermeasure of different cell current value correspondence, countermeasure includes monokaryon CPU lifting/lowerings frequency, many
Core CPU lifting/lowerings frequency, CPU pull out core, CPU and insert core etc..
（3）When detecting cell current value exception, the core of adjust automatically vehicle mounted guidance terminal CPU frequency and multi-core CPU
The heart runs number, can effectively reduce navigation terminal electric current, effectively reduce terminal power consumption amount, extends vehicle continuation of the journey, and
Terminal caloric value is also reduced, accident risk is reduced.
Brief description of the drawings
Fig. 1 is present system structural representation；
Fig. 2 is the inventive method flow chart.
Embodiment
Technical scheme is described in further detail below in conjunction with the accompanying drawings, but protection scope of the present invention is not limited to
It is as described below.
As shown in figure 1, a kind of system for controlling vehicle mounted guidance terminal cpu frequency and running number, including detection resistance, the
One voltage collection circuit, second voltage Acquisition Circuit, current calculation unit and multinuclear frequency modulation unit, the resistance of detection resistance is
Rs.The first end of detection resistance is connected with the positive pole of new-energy automobile battery, and the second end and the vehicle of detection resistance are powered back
Road is connected, and vehicle current supply circuit is connected with the negative pole of new-energy automobile battery；First voltage Acquisition Circuit connecting detection resistance
First end, the second end of second voltage Acquisition Circuit connecting detection resistance, the voltage that first voltage Acquisition Circuit is collected is
V1, the voltage that second voltage Acquisition Circuit is collected is V2.The output end of first voltage Acquisition Circuit, second voltage Acquisition Circuit
Be connected with current calculation unit, the output end of current calculation unit is connected with multinuclear frequency modulation unit, multinuclear frequency modulation unit with by
The vehicle mounted guidance terminal CPU of control is connected；
Current calculation unit is used for the sense of current according to the voltage difference detection stream at detection resistance two ends resistance after testing, and counts
Calculate the current value for flowing through detection resistance；The result of calculation I of current calculation unit=(V1-V2)/Rs, I are that positive number represents that battery is put
Electricity, I charges for negative number representation battery.
Multinuclear frequency modulation unit is used for the current value life according to obtained by being calculated default " current strategy " and current calculation unit
Into countermeasure, controlled vehicle mounted guidance terminal CPU dominant frequency and the operation number of multi-core CPU are controlled according to countermeasure.
In the present embodiment, the resistance of the detection resistance is 20mohm.
As shown in Fig. 2 by new-energy automobile storage battery flow control vehicle mounted guidance terminal cpu frequency and running number
Method, comprises the following steps：
S1：System building；
S2：Configure " current strategy ", the corresponding relation between current value and countermeasure is determined in " current strategy "；
S3：First voltage Acquisition Circuit collection voltages V1, second voltage Acquisition Circuit collection voltages V2；
S4：Current calculation unit obtains result of calculation according to step S3 V1, V2 obtained：I=(V1-V2)/Rs, I represent for positive number
Battery discharge, I charges for negative number representation battery；
S5：When I is positive number, electric current is higher to represent that battery load consumption of powering is bigger.Multinuclear frequency modulation unit is pre- according to step S2
If the current value generation countermeasure that obtains of " current strategy " and step S4, control controlled CPU to be dropped according to countermeasure
Frequently, raising frequency, pull out core or slotting core operation.
Methods described also includes delay loop step, and tune is performed to controlled CPU according to countermeasure in multinuclear frequency modulation unit
After whole, by default time delay cycling jump to step S3, cycle detection battery current, once the appearance of battery current size is different
Often, then the core of adjust automatically CPU frequency or multi-core CPU runs number.
In the present embodiment, described default time delay is 100ms.
Described above is only the preferred embodiment of the present invention, it should be understood that the present invention is not limited to described herein
Form, is not to be taken as the exclusion to other embodiment, and available for various other combinations, modification and environment, and can be at this
In the text contemplated scope, it is modified by the technology or knowledge of above-mentioned teaching or association area.And those skilled in the art are entered
Capable change and change does not depart from the spirit and scope of the present invention, then all should appended claims of the present invention protection domain
It is interior.
Claims (6)
1. a kind of system for controlling vehicle mounted guidance terminal cpu frequency and running number, it is characterised in that：Including detection resistance,
One voltage collection circuit, second voltage Acquisition Circuit, current calculation unit and multinuclear frequency modulation unit, the first end of detection resistance with
The positive pole of new-energy automobile battery is connected, and the second end of detection resistance is connected with vehicle current supply circuit, vehicle current supply circuit and
The negative pole connection of new-energy automobile battery；The first end of first voltage Acquisition Circuit connecting detection resistance, second voltage collection
Second end of circuit connecting detection resistance, first voltage Acquisition Circuit, the output end of second voltage Acquisition Circuit are and galvanometer
Unit connection is calculated, the output end of current calculation unit is connected with multinuclear frequency modulation unit, multinuclear frequency modulation unit and vehicle mounted guidance terminal
CPU is connected；
Current calculation unit is used for the sense of current according to the voltage difference detection stream at detection resistance two ends resistance after testing, and counts
Calculate the current value for flowing through detection resistance；
The current value generation that multinuclear frequency modulation unit is used for according to obtained by being calculated default " current strategy " and current calculation unit should
To strategy, vehicle mounted guidance terminal CPU dominant frequency and the operation number of multi-core CPU are controlled according to countermeasure.
2. a kind of system for controlling vehicle mounted guidance terminal cpu frequency and running number according to claim 1, its feature exists
In：The resistance of the detection resistance is Rs, and the voltage that the first voltage Acquisition Circuit is collected is V1, second voltage collection electricity
The voltage that road is collected is V2, and result of calculation I=(V1-V2)/Rs of current calculation unit, I is that positive number represents that new-energy automobile stores
Battery discharge, I charges for negative number representation new-energy automobile battery.
3. a kind of system for controlling vehicle mounted guidance terminal cpu frequency and running number according to claim 1, its feature exists
In：The resistance of the detection resistance is 20mohm.
4. the method for the control vehicle mounted guidance terminal cpu frequency and operation number according to any one of claim 1-3, its
It is characterised by, comprises the following steps：
S1：System building；
S2：Configure " current strategy ", the corresponding relation between current value and countermeasure is determined in " current strategy "；
S3：First voltage Acquisition Circuit collection voltages V1, second voltage Acquisition Circuit collection voltages V2；
S4：Current calculation unit obtains result of calculation according to step S3 V1, V2 obtained：I=(V1-V2)/Rs, I represent for positive number
New-energy automobile battery discharging, I charges for negative number representation new-energy automobile battery；
S5：When I is positive number, the current value that multinuclear frequency modulation unit is obtained according to step S2 default " current strategy " and step S4
Countermeasure is generated, controls vehicle mounted guidance terminal CPU to carry out frequency reducing, raising frequency according to countermeasure, pull out core or the operation of slotting core.
5. method according to claim 4, it is characterised in that：Also include delay loop step, in multinuclear frequency modulation unit root
Vehicle mounted guidance terminal CPU is performed after adjustment according to countermeasure, by default time delay cycling jump to step S3.
6. method according to claim 5, it is characterised in that：Described default time delay is 100ms.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710229807.6A CN107102631A (en) | 2017-04-10 | 2017-04-10 | A kind of system and method for controlling vehicle mounted guidance terminal cpu frequency and running number |
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| CN201710229807.6A CN107102631A (en) | 2017-04-10 | 2017-04-10 | A kind of system and method for controlling vehicle mounted guidance terminal cpu frequency and running number |
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| CN107102631A true CN107102631A (en) | 2017-08-29 |
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| CN201710229807.6A Pending CN107102631A (en) | 2017-04-10 | 2017-04-10 | A kind of system and method for controlling vehicle mounted guidance terminal cpu frequency and running number |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111240458A (en) * | 2020-01-02 | 2020-06-05 | 上海闻泰信息技术有限公司 | CPU frequency reduction method, system and portable computer |
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Application publication date: 20170829 |