CN101465128B - Method for protecting hard disk of vehicle-mounted hard disk videocorder - Google Patents
Method for protecting hard disk of vehicle-mounted hard disk videocorder Download PDFInfo
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- CN101465128B CN101465128B CN 200810163822 CN200810163822A CN101465128B CN 101465128 B CN101465128 B CN 101465128B CN 200810163822 CN200810163822 CN 200810163822 CN 200810163822 A CN200810163822 A CN 200810163822A CN 101465128 B CN101465128 B CN 101465128B
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Abstract
The invention discloses a method for protecting a hard disk of a hard disk video recorder. The method comprises the following steps: judging the vehicle transport state and the environment shock situation according to a speed sensor and an acceleration sensor; and judging and controlling the magnetic arm state of the hard disk by a central processor according to different running speed and shock value. The method provided by the invention can protect the hard disc of the vehicle-bone hard disk video recorder, effectively prolong the service life of the hard disc under the vehicle shock condition, and ensure the integrality and safety of stored data.
Description
Technical field
The present invention relates to a kind of hard disk protection technology, relate in particular to a kind of method for protecting hard disk of vehicle-mounted hard disk videocorder.
Background technology
At present, DVR uses hard disk as storage medium, and hard disk is originally very responsive to environmental vibration when work.Traditional DVR adopts the data continuation to write the pattern of hard disk, in the vehicle ' process, produce a large amount of situations of jolting, if hard disk continuous working under this environment will be shortened the serviceable life of hard disk greatly, and is easy to take place damages such as bad piece, bad track.
Summary of the invention
In order effectively to solve the damage that the vehicle-mounted hard disks video recorder in use causes hard disk because of vibration environment; the invention provides a kind of method for protecting hard disk of vehicle-mounted hard disk videocorder; this method is by judging vehicle running state and environmental vibration situation; utilize the memory cache data, operation hard disk magnetic arm position reaches the purpose of protection hard disk.
The technical solution adopted for the present invention to solve the technical problems is: a kind of method for protecting hard disk of vehicle-mounted hard disk videocorder may further comprise the steps:
(1) installation rate sensor and acceleration transducer on the DVR, central processing unit obtains the travel speed value of current vehicle and the accekeration of DVR environment of living in by the read sensor signal.
(2) when the travel speed value of obtaining is 0km/h, represent that current vehicle is in parked state, this moment, equipment remained static, and DVR writes data with the data continuation that produces with current video recording in the internal memory to hard disk.
(3) when the travel speed that obtains during greater than 0km/h, represent that current vehicle is in the enforcement state, this moment, the working environment of DVR changed, and acceleration transducer is started working.Central processing unit reads the data of acceleration transducer, calculates the accekeration of DVR current environment.
(4) accekeration that monitors when central processing unit surpasses predefined threshold values, and central processing unit stops to the hard disk write data, and the hard disk magnetic arm leaves magnetic disk surface, places to stop the zone, and internal memory is preserved the video recording data as primary storage medium at this moment.
When (5) accekeration that monitors when central processing unit was lower than predefined threshold values or travel speed value and is 0km/h, the hard disk magnetic arm revert to magnetic disk surface and enters read-write state, and the data high-speed that the data and the video recording of internal memory the inside produces is write hard disk.
(6) central processing unit continues to monitor the value of speed pickup and acceleration transducer, and according to the travel speed value that obtains vehicle and the accekeration of environment, 2,3,4,5 Rule of judgment is operated the magnetic arm of hard disk and the medium of data storage set by step.
The invention has the beneficial effects as follows; method of the present invention is judged vehicle running state and environmental vibration situation by speed pickup and acceleration transducer; according to different travel speeds and shock value; the magnetic arm state of hard disk is judged and controlled to central processing unit, and utilize the memory cache data to reach the function of protection hard disk.The hard disk that method of the present invention can protect the vehicle-mounted hard disks video recorder to use effectively prolongs the serviceable life of hard disk under the vehicle vibration environment, and guarantees the integrality and the security of storage data.
Embodiment
Principle of the present invention is: DVR must be used 2.5 cun hard disks, and jumbo internal memory is installed.DVR installation rate sensor and acceleration transducer, central processing unit obtains the travel speed of vehicle and the shock conditions of DVR environment of living in by the read sensor signal.When the travel speed value of obtaining was 0km/h, the expression vehicle was in parked state, and this moment, equipment remained static, and DVR writes data with the data continuation that produces with current video recording in the internal memory to hard disk.When the travel speed that obtains during greater than 0km/h, the expression vehicle is in the enforcement state, this moment, the working environment of DVR produced vibrations, and acceleration transducer is started working, when the shock value that monitors surpasses predefined threshold values (this threshold values is set according to hard disk performance), central processing unit stops to the hard disk write data, and send instructions to hard disk, the hard disk magnetic arm leaves magnetic disk surface immediately, places to stop the zone, internal memory is preserved the video recording data as primary storage medium at this moment.When the shock value that monitors is lower than predefined threshold values or travel speed value and is 0km/h, central processing unit sends instructions to hard disk, the hard disk magnetic arm revert to magnetic disk surface immediately and enters read-write state, and the data of internal memory the inside and the data high-speed of video recording generation are write hard disk.Because the speed that hard disk is write, can guarantee the data of internal memory the inside much larger than the speed that video recording produces and store into fully on the hard disk, does not lose all video recording data.When the magnetic arm of 2.5 cun hard disks placed the stop zone, because the magnetic head on the magnetic arm can not contact with disk, its anti-seismic performance was consistent with off working state, is example with the HTS541616J9AT00 of Hitachi model, and the antidetonation parameter of hard disk is 1568m/sec in working order down
2(160G)/and 1ms, off working state is 9800m/sec
2(1000G)/and 1ms, anti-seismic performance can improve more than 6 times.Therefore adopt hard disk protection technology shown in the present can effectively protect the hard disk that DVR is used under the vehicle vibration environment, prolong the serviceable life of hard disk, the data security of protection storage.
Method for protecting hard disk of vehicle-mounted hard disk videocorder of the present invention utilizes this principle, by the magnetic arm state of operation hard disk, can reach assurance hard disk anti-seismic performance under vibration environment, guarantees the integrality and the security of storage data.Concrete implementation step is:
(1) DVR installation rate sensor and acceleration transducer, central processing unit obtains the travel speed value of current vehicle and the accekeration of DVR environment of living in by the read sensor signal.
(2) when the travel speed value of obtaining is 0km/h, represent that current vehicle is in parked state, this moment, equipment remained static, and DVR writes data with the data continuation that produces with current video recording in the internal memory to hard disk.
(3) when the travel speed that obtains during greater than 0km/h, represent that current vehicle is in the enforcement state, this moment, the working environment of DVR changed, and acceleration transducer is started working.Central processing unit reads the data of acceleration transducer, calculates the accekeration of DVR current environment.
(4) accekeration that monitors when central processing unit, the shock value that is environment surpasses predefined threshold values (this threshold values is set according to hard disk performance), central processing unit stops to the hard disk write data, and send instructions to hard disk, the hard disk magnetic arm leaves magnetic disk surface immediately, place and stop the zone, internal memory is preserved the video recording data as primary storage medium at this moment.
(5) accekeration that monitors when central processing unit, be that the shock value of environment is when being lower than predefined threshold values or travel speed value and being 0km/h, central processing unit sends instructions to hard disk, the hard disk magnetic arm revert to magnetic disk surface immediately and enters read-write state, and the data of internal memory the inside and the data high-speed of video recording generation are write hard disk.Because the speed that hard disk is write, can guarantee the data of internal memory the inside much larger than the speed that video recording produces and store into fully on the hard disk, does not lose all video recording data.
(6) central processing unit continues to monitor the value of speed pickup and acceleration transducer, and according to the travel speed value that obtains vehicle and the accekeration of environment, 2,3,4,5 Rule of judgment is operated the magnetic arm of hard disk and the medium of data storage set by step.
Claims (1)
1. a method for protecting hard disk of vehicle-mounted hard disk videocorder is characterized in that, may further comprise the steps:
(1) installation rate sensor and acceleration transducer on the DVR, central processing unit obtains the travel speed value of current vehicle and the accekeration of DVR environment of living in by the read sensor signal;
(2) when the travel speed value of obtaining is 0km/h, represent that current vehicle is in parked state, this moment, equipment remained static, and DVR writes the data continuation that produces with current video recording in the internal memory to hard disk;
(3) when the travel speed that obtains during greater than 0km/h, represent that current vehicle is in transport condition, this moment, the working environment of DVR changed, and acceleration transducer is started working; Central processing unit reads the data of acceleration transducer, calculates the accekeration of DVR current environment;
(4) accekeration that monitors when central processing unit surpasses predefined threshold values, and central processing unit stops to the hard disk write data, and the hard disk magnetic arm leaves magnetic disk surface, places to stop the zone, and internal memory is preserved the video recording data as primary storage medium at this moment;
When (5) accekeration that monitors when central processing unit was lower than predefined threshold values or travel speed value and is 0km/h, the hard disk magnetic arm revert to magnetic disk surface and enters read-write state, and the data high-speed that the data and the video recording of internal memory the inside produces is write hard disk;
(6) central processing unit continues to monitor the value of speed pickup and acceleration transducer, and according to the travel speed value that obtains vehicle and the accekeration of environment, 2,3,4,5 Rule of judgment is operated the magnetic arm of hard disk and the medium of data storage set by step.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200810163822 CN101465128B (en) | 2008-12-25 | 2008-12-25 | Method for protecting hard disk of vehicle-mounted hard disk videocorder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200810163822 CN101465128B (en) | 2008-12-25 | 2008-12-25 | Method for protecting hard disk of vehicle-mounted hard disk videocorder |
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| Publication Number | Publication Date |
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| CN101465128A CN101465128A (en) | 2009-06-24 |
| CN101465128B true CN101465128B (en) | 2011-04-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 200810163822 Expired - Fee Related CN101465128B (en) | 2008-12-25 | 2008-12-25 | Method for protecting hard disk of vehicle-mounted hard disk videocorder |
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Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102541688B (en) * | 2011-12-16 | 2018-01-12 | 惠州市德赛西威汽车电子股份有限公司 | A kind of Write-protection method of vehicle-mounted external memory |
| CN103632411B (en) * | 2012-08-23 | 2017-08-29 | 中国电信股份有限公司 | The storage method and equipment of vehicle-mounted data |
| CN103839567A (en) * | 2012-11-27 | 2014-06-04 | 深圳中兴力维技术有限公司 | Method and device for improving performance of vehicle-mounted DVR and vehicle-mounted DVR |
| CN105023600B (en) * | 2014-04-28 | 2018-06-26 | 厦门雅迅网络股份有限公司 | A kind of vehicle-mounted hard disks shock prevention method based on road condition predicting |
| CN105894606A (en) * | 2014-10-30 | 2016-08-24 | 无锡孚嘉航海科技有限公司 | Anti-vibration method and device of ship-mounted navigation data storage medium |
| CN106981297B (en) * | 2016-01-15 | 2020-06-09 | 厦门雅迅网络股份有限公司 | Vehicle-mounted hard disk protection method and system based on tire pressure detection |
| JP6608345B2 (en) * | 2016-09-28 | 2019-11-20 | 日立建機株式会社 | Work machine |
| CN108563403A (en) * | 2018-04-03 | 2018-09-21 | 北京公共交通控股（集团）有限公司 | A kind of bus date storage method and device |
| CN110706723A (en) * | 2019-09-26 | 2020-01-17 | 上海本安仪表系统有限公司 | Storage device and storage method of vehicle-mounted mechanical hard disk |
| CN114461144B (en) * | 2022-01-19 | 2024-04-19 | 清华大学 | Data storage device, data processing method and road side equipment for collaborative driving |
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