CN105279046A - Method for improving reliability of embedded system - Google Patents
Method for improving reliability of embedded system Download PDFInfo
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- CN105279046A CN105279046A CN201510741327.9A CN201510741327A CN105279046A CN 105279046 A CN105279046 A CN 105279046A CN 201510741327 A CN201510741327 A CN 201510741327A CN 105279046 A CN105279046 A CN 105279046A
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Abstract
The present invention discloses a method for improving the reliability of an embedded system, and the method is applied to an automatic service device. The method comprises the following steps that: a bootstrap program guides a first operating system to start, the first operating system automatically starts the application of a client through a boot script and starts monitoring software to monitor the first operating system in running at the same time, the monitoring sofware controls the automatic service device to restart the system when the first operating system in running is failed, then the bootstrap program is entered to guide a second operating system to be started, the monitoring software is started and the first operating system is recovered at the same time after the second operating system is started, and the system is restarted to enter the recovered first operating system and the second operating system is recovered when the second operating system is failed. According to the method, the rapid automatic repair of the system is realized in the condition without human interference, the adding of new equipment is not needed, and the production cost is greatly reduced.
Description
Technical field
The present invention relates to IC manufacturing field, particularly a kind of method improving embedded system reliability.
Background technology
No matter in the consumption occasion of industrial circle or terminal, there are more and more unattended supervising device and self-service device, the supervisory system of such as factory, automatic vending machine, ATM, railway ticket machine, subway gate etc., these automation services devices are mostly at use linux system at present.
But in reality, we often run into: self-service when getting tickets on the ticket machine of de-iron road, always there are some automatic machines just in fault, cannot service be provided; Go bank self-help to withdraw the money, also often can see the ATM of fault; By the subway or train time, owing to entering the station, gate breaks down, and causes the situation of blocking up of queuing up also often to have generation.
If there is above situation, current common way arranges manpower intervention reparation exactly, but the time of artificial reparation cost is more, can not repair the very first time, is mostly even within several days, just can repair for several hours later.This situation, not only adds maintenance cost, also reduces equipment use efficiency and service quality.
Therefore, how to overcome above problem, when unattended equipment breaks down, can when without the need to manpower intervention, can teaching display stand reparation fast, recovering normal, is very valuable.
The method taked at present is the redundancy increasing hardware, namely, in an automation services device, put into two identical devices, when an equipment is inoperable time, another equipment can be switched to and work on, this method is in some very urgent and crucial occasions, also be a kind of selection correctly, but the quantity of automation services device is usually comparatively large, the scope of application is wider, need to dispose in enormous quantities, greatly will increase hardware cost.
Therefore, how under the prerequisite guaranteeing cost, to ensure the long-time failure-free operation of automation services device, become the technical matters that those skilled in the art are urgently to be resolved hurrily.
Summary of the invention
The invention provides a kind of method improving embedded system reliability, to solve the above-mentioned technical matters existed in prior art.
For solving the problems of the technologies described above, the invention provides a kind of method improving embedded system reliability, be applied to automation services device, be provided with first, second operating system and monitoring software in this self-service device, method comprises:
Boot guides the first os starting;
Described first operating system starts the application program of client automatically by start script, starts monitoring software simultaneously and monitors the first operating system run;
When the first operating system run exists fault, monitoring software controls described self-service device and restarts system, again enters boot,
Described boot guides the second os starting, opens monitoring software and repair the first operating system simultaneously after the second os starting;
When described second operating system breaks down, then restart system and enter the first operating system repaired, and repair the second operating system.
As preferably, described boot is arranged on one in automation services device independently on SPIFlash.
As preferably, first, second operating system installation described is on EmmcFlash.
As preferably, first, second operating system described includes: kernel, root file system, application program and data file.
As preferably, first to after described EmmcFlash subregion, then by first, second operating system installation described on EmmcFlash
As preferably, described monitoring software adopts Watchdog.
As preferably, described boot is selected to guide corresponding os starting according to boot environmental variance, and described boot environmental variance obtains from the status register of described Watchdog.
As preferably, first, second operating system described adopts linux system, android system or Windows system.
Compared with prior art, the present invention installs two groups of operating systems by software redundancy technology in an automation services device simultaneously, and utilize monitoring software and boot to coordinate, another group operating system can be called when wherein one group of operating system breaks down, repair the operating system that there is fault simultaneously, guarantee that automation services device realizes self-regeneration fast automatically, greatly strengthen the reliability of system, ensure persistent service.Namely the present invention is by software redundancy technology, realize the mutual backup of dual system, when a failure occurs, standby system can be switched to fast, and repair failure system, in the quick self-regeneration without the need to realizing system when artificial interference, the present invention, without the need to increasing new equipment, greatly reduces production cost.
Accompanying drawing explanation
Fig. 1 is a kind of process flow diagram improving the method for embedded system reliability in the embodiment of the invention;
Fig. 2 is the subregion schematic diagram of EmmcFlash in the embodiment of the invention.
Embodiment
For enabling above-mentioned purpose of the present invention, feature and advantage become apparent more, are described in detail the specific embodiment of the present invention below in conjunction with accompanying drawing.It should be noted that, accompanying drawing of the present invention all adopts the form of simplification and all uses non-ratio accurately, only in order to object that is convenient, the aid illustration embodiment of the present invention lucidly.
As shown in Figure 1, the method of raising embedded system reliability provided by the invention, be applied to automation services device, two groups of operating systems and monitoring software are installed in this self-service device, for showing that two groups of operating systems are divided into the first operating system and the second operating system by difference, described first, second operating system installation is at EmmcFlash (EmbeddedMultiMediaCardFlash, the buffer memory of embedded multi-media card) on, certainly need in a pre-installation to carry out multidomain treat-ment to described EmmcFlash, in the present embodiment, described first, second operating system includes: kernel, root file system, application program and data file, therefore, EmmcFlash is according to described first, the file of the second operating system carries out subregion.
A kind of method improving embedded system reliability provided by the invention, comprises the following steps:
First, boot guides the first os starting.Particularly, described boot is arranged on one in automation services device independently on SPIFlash, and described boot is namely automatically out of service after completing guiding, and the possibility therefore damaged is lower, does not affect the reliability of embedded system of the present invention.
Then, described first operating system starts the application program of client automatically by start script, for client provides corresponding function and service, starts monitoring software simultaneously and monitors the first operating system run;
When the first operating system run exists fault, monitoring software controls described self-service device and restarts system, again enters boot;
Described boot guides the second os starting, opens monitoring software and repair the first operating system simultaneously after the second os starting;
When described second operating system breaks down, then restart system and enter the first operating system repaired, and repair the second operating system, by that analogy, the quick self-regeneration of system can be realized.
It should be noted that, described boot is selected to guide corresponding os starting according to boot environmental variance, described boot environmental variance obtains from the status register of described monitoring software, in other words, the status register of monitoring software records the duty of two groups of operating systems, and a mark is set in boot environmental variance, boot determines to guide which operating system according to this mark.
Preferably, first, second operating system described adopts linux system, android system or Windows system.
Below for linux system, describe the present invention in detail.
In the present embodiment, described monitoring software adopts Watchdog.Particularly, by software redundancy technology, on an embedded device and self-service device, two linux systems are installed simultaneously, Linux1 and Linux2 is referred to as in the present embodiment, under acquiescence switch on condition, Linux1 runs, at run duration, if Linux1 system goes wrong or collapses, by Watchdog and boot (specifically adopting Bootloader), self-service device automatically switches to another linux system, namely Linux2 is run, and after Linux2 system starts, Linux2 can provide the function consistent with Linux1 and service, simultaneously Linux2 system can that Linux1 system of having damaged of automatic reparation on backstage.
After supposing that Linux2 runs a period of time, when again going wrong, by Watchdog and boot, equipment can be switched to the Linux1 system repaired again, and repairs linux2 system.And so forth, just can realize a kind of linux system solution reliably, by the practical program, the quick self-regeneration of feasible system, reduces manual intervention, realizes the high stability of product, and reduce maintenance cost.
Particularly, Bootloader is kept at a slice independently on SPIFlash, Bootloader is only responsible for the guiding of system, and after completing guiding, Bootloader is just out of service, so the possibility that Bootloader does not damage substantially.Meanwhile, be put on the flash of Emmc by two linux systems, each linux system needs to comprise linux kernel, Linux root file system, application partition and data file subregion, so, in realization, first subregion is carried out to Emmc, as shown in Figure 2.
Particularly, first a mark is set at the environmental variance subregion of bootloader, 0 represents startup Linux1, 1 represents startup Linux2, this mark default value is 0, namely acquiescence starts Linux1, when after guiding Linux1, this value will arrange once by bootloader again, be still 0, represent and guide Linux1, when system generation problem, Watchdog can restart system, at this moment, Bootloader marks and can judge inside the status register of Watchdog, this is restarted is because system reason, Watchdog starts system, at this moment be 0 at judge mark, just illustrate that problem has appearred in Linux1, bootloader will be directed to Linux2, and traffic sign placement is become 1, when Linux2 goes wrong, use same logic, be switched to Linux1 again.
After Linux1 starts, Linux starts the application program of client automatically by start script, corresponding function and service are provided, set up a new thread in the application, enable hardware watchdog in thread, that ceaselessly carries out Watchdog feeds dog action simultaneously, like this, under normal circumstances, system runs well, and provides normal related service.Once application program goes wrong, or system crash, feed dog action and just cannot carry out, system, after watchdog time-out, will restart system by hardware Watchdog.Again enter bootloader boot, bootloader will start from Linux2, after Linux2 starts, Linux2 can run the program the same with Linux1, same service is provided, and also can start Watchdog correlation function, in addition, Linux2 can copy the normal file of its own system and application, go to cover and repair linux system 1, when Linux2 is when also going wrong sometime, watchdog can restart system again, enter the Linux1 repaired, and repair Linux2, like this, just by redundancy dual system, greatly strengthen the reliability of system, ensure continual service, and realize self-regeneration function fast automatically.
Obviously, those skilled in the art can carry out various change and modification to invention and not depart from the spirit and scope of the present invention.Like this, if these amendments of the present invention and modification belong within the scope of the claims in the present invention and equivalent technologies thereof, then the present invention is also intended to comprise these change and modification.
Claims (8)
1. improve a method for embedded system reliability, it is characterized in that, be applied to automation services device, be provided with first, second operating system and monitoring software in this self-service device, method comprises:
Boot guides the first os starting;
Described first operating system starts the application program of client automatically by start script, starts monitoring software simultaneously and monitors the first operating system run;
When the first operating system run exists fault, monitoring software controls described self-service device and restarts system, again enters boot,
Described boot guides the second os starting, opens monitoring software and repair the first operating system simultaneously after the second os starting;
When described second operating system breaks down, then restart system and enter the first operating system repaired, and repair the second operating system.
2. the as claimed in claim 1 method improving embedded system reliability, is characterized in that, described boot is arranged on one in automation services device independently on SPIFlash.
3. the method improving embedded system reliability as claimed in claim 1, it is characterized in that, first, second operating system installation described is on EmmcFlash.
4. the method improving embedded system reliability as claimed in claim 3, it is characterized in that, first, second operating system described includes: kernel, root file system, application program and data file.
5. the method improving embedded system reliability as claimed in claim 4, is characterized in that, first to after described EmmcFlash subregion, then by first, second operating system installation described on EmmcFlash.
6. the method improving embedded system reliability as claimed in claim 1, is characterized in that, described monitoring software adopts Watchdog.
7. the method improving embedded system reliability as claimed in claim 6, it is characterized in that, described boot is selected to guide corresponding os starting according to boot environmental variance, and described boot environmental variance obtains from the status register of described Watchdog.
8. the method improving embedded system reliability as claimed in claim 1, is characterized in that, first, second operating system described adopts linux system, android system or Windows system.
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| CN201510741327.9A CN105279046A (en) | 2015-11-04 | 2015-11-04 | Method for improving reliability of embedded system |
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| CN108073507A (en) * | 2016-11-17 | 2018-05-25 | 联芯科技有限公司 | A kind of processing method and processing device of Kernel Panic field data |
| CN108241511A (en) * | 2016-12-23 | 2018-07-03 | 大唐移动通信设备有限公司 | The switching method and device of a kind of software version |
| CN108829442A (en) * | 2017-05-04 | 2018-11-16 | 杭州海康威视数字技术股份有限公司 | Program starts method and device |
| WO2019010875A1 (en) * | 2017-07-14 | 2019-01-17 | 深圳市沃特沃德股份有限公司 | Operating system restart method, device, and auxiliary system |
| CN109783271A (en) * | 2017-11-10 | 2019-05-21 | 湖南新云网科技有限公司 | Terminal system configuration method and device, computer equipment and storage medium |
| CN110674046A (en) * | 2019-09-24 | 2020-01-10 | 上海航天电子通讯设备研究所 | Method for improving reliability of satellite-borne embedded file system |
| CN111061612A (en) * | 2019-12-12 | 2020-04-24 | 天地伟业技术有限公司 | Embedded system state monitoring method |
| CN111198777A (en) * | 2020-01-03 | 2020-05-26 | 北京字节跳动网络技术有限公司 | Data processing method, device, terminal and storage medium |
| CN111522690A (en) * | 2020-03-27 | 2020-08-11 | 宜鼎国际股份有限公司 | Data storage device and method for maintaining normal startup operation of data storage device |
| CN111722880A (en) * | 2020-05-11 | 2020-09-29 | 深圳市共进电子股份有限公司 | Equipment production method, device, terminal equipment and medium |
| CN117130825A (en) * | 2023-01-30 | 2023-11-28 | 荣耀终端有限公司 | Method for preventing abnormal operation of electronic equipment and electronic equipment |
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| CN110674046A (en) * | 2019-09-24 | 2020-01-10 | 上海航天电子通讯设备研究所 | Method for improving reliability of satellite-borne embedded file system |
| CN110674046B (en) * | 2019-09-24 | 2023-08-01 | 上海航天电子通讯设备研究所 | Method for improving reliability of satellite-borne embedded file system |
| CN111061612A (en) * | 2019-12-12 | 2020-04-24 | 天地伟业技术有限公司 | Embedded system state monitoring method |
| CN111198777A (en) * | 2020-01-03 | 2020-05-26 | 北京字节跳动网络技术有限公司 | Data processing method, device, terminal and storage medium |
| CN111522690A (en) * | 2020-03-27 | 2020-08-11 | 宜鼎国际股份有限公司 | Data storage device and method for maintaining normal startup operation of data storage device |
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| CN111722880A (en) * | 2020-05-11 | 2020-09-29 | 深圳市共进电子股份有限公司 | Equipment production method, device, terminal equipment and medium |
| CN111722880B (en) * | 2020-05-11 | 2024-02-09 | 深圳市共进电子股份有限公司 | Equipment production method and device, terminal equipment and medium |
| CN117130825A (en) * | 2023-01-30 | 2023-11-28 | 荣耀终端有限公司 | Method for preventing abnormal operation of electronic equipment and electronic equipment |
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Application publication date: 20160127 |