CN101639357A - Method and system for managing power supply of electronic navigation system - Google Patents
Method and system for managing power supply of electronic navigation system Download PDFInfo
- Publication number
- CN101639357A CN101639357A CN200910101825A CN200910101825A CN101639357A CN 101639357 A CN101639357 A CN 101639357A CN 200910101825 A CN200910101825 A CN 200910101825A CN 200910101825 A CN200910101825 A CN 200910101825A CN 101639357 A CN101639357 A CN 101639357A
- Authority
- CN
- China
- Prior art keywords
- microprocessor
- down mode
- power supply
- power down
- power
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Landscapes
- Power Sources (AREA)
Abstract
The invention discloses a power supply management method of an electronic navigation system, which comprises the following steps: powering on the system to enter a normal operation state; when no usercommands are input within a period of time, sending out an inquiry command by a second microprocessor; after receiving the inquiry command, judging whether the system enters a power-down mode or notaccording to the operation state by a first microprocessor; if the system enters the power-down mode, dumping the state of the first microprocessor to a system internal memory; replying a command to the second microprocessor and cutting off power by the first microprocessor to enter the power-down mode; if the system keeps the normal operation state, replying a normal operation signal to the second microprocessor so as to keep the normal operation state; when a user command is input, awakening the second microprocessor and powering on the system, sending out a command for switching the operation state, recovering the state of the first microprocessor and ensureing that the system is operated normally. The invention also provides a system for realizing the management method. The inventionhas the advantages of high reliability, electricity saving and high starting speed.
Description
Technical field
The present invention relates to a kind of method for managing power supply of electronic navigation system, specifically is a kind ofly to utilize two microprocessors to realize the method for effective power management and realize the power-supply management system of this method for managing power supply.
Background technology
The power-supply management system of prior art electronic navigation system comprises a microprocessor, Installed System Memory, DC-DC voltage transformation module, user's load module, video and other modules and other main functional modules of system, and microprocessor is connected with Installed System Memory, DC-DC voltage transformation module, user's load module, video and other modules and other main functional modules of system respectively.In this power-supply management system, power management is to be controlled by the software of microprocessor and operation system, when system need enter power down mode by running status, as the input of long-time no user or user's shutdown, so then to thoroughly the cut off the power supply shutdown or only make the processor sleep pattern that enters out of service of microprocessor and system peripheral; When system entered running status by power down mode, if any user input or user's start, so corresponding above-mentioned first kind of situation, system powered on and reload system software and enter running status, and second kind of situation wake up process device makes it enter normal operation mode.There is following defective in above-mentioned method for managing power supply in the application process of reality:
1, because systematic microprocessor also need be responsible for power management in the various service data of Processing tasks; therefore this can increase the weight of the load of microprocessor undoubtedly; cause system crash or deadlock easily and can not restart automatically, so the reliability of said system is lower.
2, said system if microprocessor and system peripheral are thoroughly cut off the power supply, can cause the toggle speed of system slow in system when power down mode enters normal operating condition when entering power down mode.If microprocessor and system peripheral are kept power supply, then system can expend more electric energy when power down mode, thereby has reduced the system standby time.So said system can't accomplish economize on electricity and fast both of toggle speed are taken into account when power down mode.
Summary of the invention
The technical problem to be solved in the present invention is, overcomes the defective of above prior art, and the method for managing power supply of the fast electronic navigation system of a kind of reliability height, power saving and toggle speed is provided.
Technical scheme of the present invention is, a kind of method for managing power supply of electronic navigation system is provided, and may further comprise the steps:
System powers on, and enters normal operating condition;
When system no user when input in a period of time, send the inquiry command that enters power down mode by this intrasystem second microprocessor, this intrasystem first microprocessor judges whether to enter power down mode according to this system running state after receiving this inquiry command, enter power down mode if judge, then with the unloading of first microprocessor state to Installed System Memory, and Installed System Memory placed the self-refresh state, reply power down mode order to the second microprocessor, cut off first microprocessor and system peripheral power supply by second microprocessor, second microprocessor enters the interruption wake-up states simultaneously, and system enters power down mode; If judge to keep normal operating condition, then reply status signal to the second microprocessor of normal operation so that system keeps normal operating condition;
When system has the user to import, second microprocessor is waken up, by this microprocessor is first microprocessor and system peripheral powers on and simultaneously send the switchover operation status command to first microprocessor, first microprocessor is by recovering in the Installed System Memory, and system returns to normal operating condition by power down mode.
When there was the user command input in system, system powered on, and sends the switchover operation status command by second microprocessor, and system data is by returning to first microprocessor in the Installed System Memory, and system returns to normal operating condition by power down mode.
It is further comprising the steps of: send the KeepAlive inquiry command by second microprocessor cycle, first microprocessor is replied the KeepAlive order after receiving this signal.
Another technical matters that the present invention will solve is, a kind of management system that realizes above-mentioned method for managing power supply is provided, it comprises first microprocessor, second microprocessor, user's load module, Installed System Memory and other main functional modules of system, and described second microprocessor is connected with user's load module; Described second microprocessor also is connected with first microprocessor by data bus; Described first microprocessor is connected with Installed System Memory, other main functional modules of system respectively.
After adopting above management method and management system, the present invention compared with prior art has the following advantages:
1, because the problem that the present invention has avoided using microprocessor solution task is simultaneously handled and power management causes load to increase the weight of; finish the task processing and the power management of system respectively by the first microprocessor and second microprocessor; reduced the load of first microprocessor; the load of master microprocessor just; so the method for managing power supply of electronic navigation system of the present invention and system are difficult for causing system crash or deadlock, its functional reliability is higher.
2, system of the present invention is when entering power down mode, with the system data unloading to Installed System Memory, first microprocessor and system peripheral are thoroughly cut off the power supply, power down mode, second microprocessor that has only Installed System Memory to be in self-refresh is in the power down mode that interruption wakes up, so system very saves electric energy loss when power down mode.Simultaneously, only need to recover the first processor state, so the toggle speed of system is very fast from internal memory when power down mode enters normal operating condition.In sum, the present invention can accomplish economize on electricity and fast both of toggle speed are taken into account when being in power down mode simultaneously.
3, as improving, the present invention's second microprocessor cycle sends the KeepAlive inquiry command, first microprocessor is replied the KeepAlive order after receiving this signal, can when first microprocessor is in the deadlock state, restart automatically like this, make that functional reliability of the present invention is higher system.
Description of drawings
Fig. 1 is the schematic flow sheet of method for managing power supply of the present invention.
Fig. 2 is the structural representation of power-supply management system of the present invention.
Embodiment
The invention will be further described below in conjunction with the drawings and specific embodiments.
As shown in Figure 2, the power-supply management system of electronic navigation system of the present invention, it comprises first microprocessor, second microprocessor, DC-DC voltage transformation module, user's load module, video and other main functional modules of other modules, Installed System Memory and system; Described first microprocessor is system's master microprocessor, and model is SH7764, mainly finishes each function of system, and keeps communicate by letter with second microprocessor, accepts and carries out its power management command and also reply at the appointed time; Described second microprocessor is the auxilliary microprocessor of system, and model is R8C, is responsible for power supply managing and user's input manager; Installed System Memory is system's running memory of first microprocessor, is controlled or is visited by first microprocessor; Described DC-DC voltage transformation module, user's load module, video and other modules are connected with second microprocessor respectively; Described second microprocessor also is connected with first microprocessor by the asynchronous serial-port data bus and communicates by letter; Described first microprocessor is connected with Installed System Memory, other main functional modules of system respectively, is responsible for the normal operation of total system.
As shown in Figure 1, the method for managing power supply of electronic navigation system of the present invention may further comprise the steps:
User's start, total system powers on, by second microprocessor is the first microprocessor power supply, first microprocessor report power supply is an off-mode, second microprocessor is replied and is switched to the running status order, first microprocessor loads OS and application software, and system enters normal operating condition and replys the normal operating condition order simultaneously to first microprocessor.
In the normal course of operation of system, send the KeepAlive inquiry command by second microprocessor cycle, first microprocessor is replied the KeepAlive order after receiving this signal, the proof first microprocessor is in the state of normal operation, if second microprocessor is not received the KeepAlive order, illustrate that then first microprocessor is in the deadlock state, then restarts first microprocessor by outage.
When system no user when input in a period of time, during as user's shutdown or long-time nothing operation, this time period can be set up on their own by the user, send the inquiry command that enters power down mode by this intrasystem second microprocessor, promptly enter suspended state or hibernation-like state, this intrasystem first microprocessor judges whether to enter power down mode according to this system running state after receiving this inquiry command, enter power down mode if judge, then with the data conversion storage of first microprocessor state to Installed System Memory, reply power down mode order to the second microprocessor, cut off first microprocessor by second microprocessor, system peripheral, the power supply of each functional module of system just, Installed System Memory enters the self-refresh state, and system enters power down mode; If judge to keep normal operating condition, then reply status signal to the second microprocessor of normal operation so that system keeps normal operating condition.
When user's start, second microprocessor is waken up, power on for each functional module of first microprocessor, Installed System Memory and system by second microprocessor, send by second microprocessor and to switch to the running status order, first microprocessor is by recovering in the Installed System Memory, promptly recover OS and application software from Installed System Memory, the information that system returns to normal operating condition by power down mode and sends normal operating condition is to second microprocessor.
The interactive mode of the first microprocessor and second microprocessor: first microprocessor is reported its current power supply status, and second microprocessor sends power supply status and switches message, and it is that Management Information Base/it is right to reply that report condition and state switch message.During startup, initiatively send the report condition order by first microprocessor, state and the Starting mode that will switch replied and informed to second microprocessor.After system start-up is finished, when power supply status need switch, by second microprocessor transmit status switching command initiatively, the first microprocessor refusal or finish switching after reply and report current state.When system normally moves, send the keepAlive order by second timing microprocessor, first microprocessor need be replied and be informed that it still is in normal operating conditions, otherwise system will restart.
When system enters power down mode, promptly entered hibernation-like state, system is kept in the Installed System Memory, has only second microprocessor and Installed System Memory to be in minimum power supply state, reaches best power down mode.After user start,, thereby reach the performance of fast quick-recovery actually by the second microprocessor heat start-up system.
Below only be specific embodiments of the invention; so it is not to limit scope of the present invention with this embodiment; anyly be familiar with those skilled in the art; without departing from the spirit and scope of the present invention; can do further improvement and variation on this basis, so protection scope of the present invention should be as the criterion with the scope that claims of the present invention were defined.
Claims (3)
1, a kind of method for managing power supply of electronic navigation system is characterized in that: may further comprise the steps:
System powers on, and enters normal operating condition;
When system no user when input in a period of time, send the inquiry command that enters power down mode by this intrasystem second microprocessor, this intrasystem first microprocessor judges whether to enter power down mode according to this system running state after receiving this inquiry command, enter power down mode if judge, then with the unloading of first microprocessor state to Installed System Memory, and Installed System Memory placed the self-refresh state, reply power down mode order to the second microprocessor, cut off first microprocessor and system peripheral power supply by second microprocessor, second microprocessor enters the interruption wake-up states simultaneously, and system enters power down mode; If judge to keep normal operating condition, then reply status signal to the second microprocessor of normal operation so that system keeps normal operating condition;
When system has the user to import, second microprocessor is waken up, by this microprocessor is first microprocessor and system peripheral powers on and simultaneously send the switchover operation status command to first microprocessor, the state of first microprocessor is by recovering in the Installed System Memory, and system returns to normal operating condition by power down mode.
2, method for managing power supply according to claim 1, it is characterized in that: it is further comprising the steps of: send the KeepAlive inquiry command by second microprocessor cycle, first microprocessor is replied the KeepAlive order after receiving this signal.
3, a kind of power-supply management system of realizing the described method for managing power supply of claim 1, it is characterized in that: it comprises first microprocessor, second microprocessor, DC-DC voltage transformation module, user's load module, video and other main functional modules of other modules, Installed System Memory and system, and described second microprocessor is connected with DC-DC voltage transformation module, user's load module, video and other modules; Described second microprocessor also is connected with first microprocessor by data bus; Described first microprocessor is connected with Installed System Memory, other main functional modules of system respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910101825A CN101639357A (en) | 2009-08-26 | 2009-08-26 | Method and system for managing power supply of electronic navigation system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910101825A CN101639357A (en) | 2009-08-26 | 2009-08-26 | Method and system for managing power supply of electronic navigation system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101639357A true CN101639357A (en) | 2010-02-03 |
Family
ID=41614455
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910101825A Pending CN101639357A (en) | 2009-08-26 | 2009-08-26 | Method and system for managing power supply of electronic navigation system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101639357A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104865851A (en) * | 2015-03-20 | 2015-08-26 | 深圳市冠旭电子有限公司 | Light variation-based energy saving method and device |
| WO2017117979A1 (en) * | 2016-01-06 | 2017-07-13 | 华为技术有限公司 | Navigation device, and navigation method |
| CN111522427A (en) * | 2020-04-24 | 2020-08-11 | 上海航天计算机技术研究所 | Power supply control method of high-power-consumption satellite-borne storage system |
-
2009
- 2009-08-26 CN CN200910101825A patent/CN101639357A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104865851A (en) * | 2015-03-20 | 2015-08-26 | 深圳市冠旭电子有限公司 | Light variation-based energy saving method and device |
| WO2017117979A1 (en) * | 2016-01-06 | 2017-07-13 | 华为技术有限公司 | Navigation device, and navigation method |
| CN111522427A (en) * | 2020-04-24 | 2020-08-11 | 上海航天计算机技术研究所 | Power supply control method of high-power-consumption satellite-borne storage system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106358273B (en) | Low-power consumption communication device | |
| CN101802750B (en) | Apparatus and method for reducing power consumption in system on chip | |
| US20170120768A1 (en) | Electric quantity monitoring device, navigation system and vehicle | |
| CN102778943A (en) | State control method and device and portable terminal | |
| CN101700762A (en) | Electricity-saving method of vehicle-mounted CAN bus network | |
| CN113765679B (en) | Computer network awakening method and system | |
| CN103138018B (en) | A kind of battery management system state switching method | |
| CN102566731A (en) | Redundant power supply backup method and redundant power supply backup control device | |
| CN102289279A (en) | Equipment management method and device based on RTC (Real-Time Clock) clock interrupt | |
| CN109752996A (en) | A kind of TBox power consumption management method | |
| CN106494321B (en) | A kind of automobile ECU sleep management strategy process and system | |
| CN105446916A (en) | USB bus state switching method and apparatus | |
| CN105599706A (en) | Standby management method and system of intelligent vehicle-mounted information entertainment system | |
| CN105487638A (en) | Electronic circuit system and power consumption reducing method thereof | |
| CN115509342A (en) | Switching method and system between multi-core clusters | |
| CN101639357A (en) | Method and system for managing power supply of electronic navigation system | |
| CN105549723A (en) | Electricity saving control method and device of server, and energy-saving control device of electronic equipment | |
| CN102929381A (en) | Electronic system and power management system thereof | |
| CN202261051U (en) | Switching power supply | |
| CN102427404B (en) | Energy-saving control system and method for communication equipment | |
| CN103488270B (en) | Electricity saving method and electronic installation thereof | |
| WO2012126396A1 (en) | Energy saving method for service board, master control board, service board, and access apparatus | |
| CN102681650A (en) | Power supply control energy-saving method and corresponding storage system thereof | |
| CN202729489U (en) | Sleep-mode energy saving system of elevator | |
| CN105068641A (en) | Computer system standby/wake-up function realizing method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20100203 |