CN103839567A - Method and device for improving performance of vehicle-mounted DVR and vehicle-mounted DVR - Google Patents
Method and device for improving performance of vehicle-mounted DVR and vehicle-mounted DVR Download PDFInfo
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- CN103839567A CN103839567A CN201210490557.9A CN201210490557A CN103839567A CN 103839567 A CN103839567 A CN 103839567A CN 201210490557 A CN201210490557 A CN 201210490557A CN 103839567 A CN103839567 A CN 103839567A
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Abstract
The invention discloses a method and device for improving the performance of a vehicle-mounted DVR and the vehicle-mounted DVR. The method comprises the steps that the acceleration value of a vehicle at at least one spatial dimension is detected; when the detected acceleration value is larger than or equal to a preset judgment threshold value, reading/writing operation on a hard disk is stopped and vehicle-mounted video data acquired in real time are cached into a data-caching unit; when the detected acceleration value is smaller than the preset judgment threshold value, the reading/writing operation on the hard disk is started, and the vehicle-mounted video data cached in the data-caching unit is moved to the hard disk. Compared with the prior art, by the adoption of the method and device for improving the performance of the vehicle-mounted DVR and the vehicle-mounted DVR, the service life of the hard disk of the vehicle-mounted DVR can be greatly prolonged, the operational reliability of the vehicle-mounted DVR can be improved when the vehicle-mounted DVR works in an extremely adverse shaking environment, and the service life of the vehicle-mounted DVR is prolonged.
Description
Technical field
The present invention relates to technical field of video monitoring, in particular to a kind of method that improves vehicle-mounted DVR performance and device, vehicle-mounted DVR.
Background technology
DVR(Digital Video Recorder, DVR), be also digital video recorder, with respect to traditional analog video video recorder, it adopts hard disc recording, therefore be called as DVR.It is a set of computer system of carrying out image stores processor, have to image/voice record a video for a long time, the function of recording, telemonitoring and control.
Conventionally, existing hard disk is all mechanical rotational hard disk, and its magnetic head driving mechanism is one of parts the most accurate in hard disk, and it is made up of read-write head, transmission arm, transmission shaft three parts.It has adopted contactless head and dish structure, and the magnetic disk surface at High Rotation Speed after powering up moves, and the gap conventionally and between disc only has 0.1 ~ 0.3um.For like this near distance, and the velocity of rotation of disc is exceedingly fast when read-write, in this case, if the anti-seismic performance of hard disk is bad, as long as disk read-write magnetic head is subject to extraneous slight vibrations, just may cause hard disk to produce the problem that bad track or read-write head damage.
As can be seen here, vibration environment is dangerous for the hard disk in read-write state, therefore, how under this environment, to ensure that vehicle-mounted DVR can work reliably, being that first we need the problem solving at present, is also to ensure vehicle-mounted DVR reliability and the key that extends its serviceable life.
Current vehicle-mounted DVR is mounted on different types of vehicle in actual use, thereby for these different vehicles, because it has different vehicle conditions, road conditions, the intensity of its vibrations is also not quite similar.When vehicle condition and road conditions are when very severe, if can not hard disk effectively be protected, will shorten the serviceable life of vehicle-mounted DVR, even cause the permanent damage of hard disk.Therefore,, in order to improve reliability and the serviceable life of vehicle-mounted DVR, key is how in vibration environment, effectively to protect hard disk.
The solution that the hard disk reliability of vehicle-mounted DVR improves in current most of producer has conventionally:
(1) pass through peripheral hardware
It is mainly from the viewpoint of the power supply of vehicle-mounted DVR hard disk, connector interface fastness, waterproof and dustproof etc.
(2) pass through physical construction
Existing mechanical shockproof technology mainly contains many kinds of measures such as complete machine damping, hard disk rack damping, hard disk shock-absorbings.Its starting point is mainly placed on the aspects such as physical construction; but in the middle of practical application; these mechanical shockproof measures for hard disk the protection under sharp pounding environment limited; the hard disk of and vehicle-mounted DVR relatively severe when vibration environment, in the time using state, adopts these mechanical shockproof measures still to keep away unavoidable hard disk and suffers damage.
Existing by peripheral hardware realize reliability strengthen measure be a supplementary means of safeguards system global reliability, in the time that the hard disk of vehicle-mounted DVR is under high-intensity vibration environment, hard disk still cannot improve its reliability and serviceable life in read-write process.
The anti-shake technology of existing mechanical type, on road surface, perhaps can use some effects stably, but when hard disk is under high-intensity vibration environment, this mechanical shock absorption structure just vibrations has to external world been carried out simple buffering, while making vibrations be delivered to hard disk, obtain certain weakening, and for high-intensity vibrations, if only depend on this mechanical shock absorption structure, when hard disk during in read-write state still can badly damaged hard disk magnetic head or disc.
Therefore, how to allow vehicle-mounted DVR work reliably under high-intensity vibration environment, and not shorten again its serviceable life be current line technician's letter technical matters to be solved in the industry.
Summary of the invention
In order to ensure that vehicle-mounted DVR can normally work under high-intensity vibration environment, and can be extended the serviceable life of vehicle-mounted DVR, the object of the present invention is to provide a kind of method that improves vehicle-mounted DVR performance and device, vehicle-mounted DVR.
In order to reach object of the present invention, the present invention realizes by the following technical solutions:
Under a kind of embodiment, a kind of method that improves vehicle-mounted DVR performance providing, comprising:
Detect the accekeration of vehicle at least one Spatial Dimension;
In the time that the accekeration detecting is more than or equal to default judgment threshold, stop the read/write operation of hard disk, and by the vehicle-mounted video recording data buffer storage of Real-time Collection to data buffer storage unit; In the time that the accekeration detecting is less than default judgment threshold, starts the read/write operation of hard disk, and the vehicle-mounted video recording data of buffer memory in data buffer storage unit are moved to hard disk.
Preferably, described data buffer storage unit is nonvolatile memory NAND FLASH, and the vehicle-mounted video recording data of its buffer memory are stored with the data structure of circular linked list.
A device that improves vehicle-mounted DVR performance, comprising:
Acceleration transducer, the accekeration for detection of vehicle at least one Spatial Dimension;
Processing module, while being more than or equal to default judgment threshold, sending read/write operation to hard disk and ceases and desist order, and send the first fill order to execution module for the accekeration detecting when acceleration transducer; And the accekeration detecting when acceleration transducer is while being less than default judgment threshold, sends read/write operation startup command, and send the second fill order to execution module to hard disk;
Execution module, for according to the first fill order of obtaining by the vehicle-mounted video recording data buffer storage of Real-time Collection to data buffer storage unit; And according to the second fill order of obtaining, the vehicle-mounted video recording data of buffer memory in data buffer storage unit are moved to hard disk;
Hard disk, for storing vehicle-mounted video recording data; And be further used for ceasing and desisting order and stopping the read/write operation of hard disk according to the read/write operation of obtaining, and start the read/write operation of hard disk according to the read/write operation startup command of obtaining;
Data buffer storage unit, for the vehicle-mounted video recording data of buffer memory.
Preferably, described data buffer storage unit is nonvolatile memory NAND FLASH, and the vehicle-mounted video recording data of its buffer memory are stored with the data structure of circular linked list.
A kind of vehicle-mounted DVR, it comprise as above-described embodiment provide as described in the device of the vehicle-mounted DVR performance of raising, described device comprises:
Acceleration transducer, the accekeration for detection of vehicle at least one Spatial Dimension;
Processing module, while being more than or equal to default judgment threshold, sending read/write operation to hard disk and ceases and desist order, and send the first fill order to execution module for the accekeration detecting when acceleration transducer; And the accekeration detecting when acceleration transducer is while being less than default judgment threshold, sends read/write operation startup command, and send the second fill order to execution module to hard disk;
Execution module, for according to the first fill order of obtaining by the vehicle-mounted video recording data buffer storage of Real-time Collection to data buffer storage unit; And according to the second fill order of obtaining, the vehicle-mounted video recording data of buffer memory in data buffer storage unit are moved to hard disk;
Hard disk, for storing vehicle-mounted video recording data; And be further used for ceasing and desisting order and stopping the read/write operation of hard disk according to the read/write operation of obtaining, and start the read/write operation of hard disk according to the read/write operation startup command of obtaining;
Data buffer storage unit, for the vehicle-mounted video recording data of buffer memory.
Under another embodiment, a kind of method that improves vehicle-mounted DVR performance providing, comprising:
Detect the running status of vehicle;
In the time vehicle being detected in transport condition, stop the read/write operation of hard disk, and by the vehicle-mounted video recording data buffer storage of Real-time Collection to data buffer storage unit; In the time that vehicle remains static, start the read/write operation of hard disk, and the vehicle-mounted video recording data of buffer memory in data buffer storage unit are moved to hard disk.
Preferably, the method for the running status of detection vehicle comprises:
The static acceleration rate threshold of initialization;
The accekeration of N vehicle of continuous acquisition at least one Spatial Dimension;
Whether the accekeration that judges described collection is all greater than static acceleration rate threshold, if so, judges that vehicle is current in transport condition, otherwise, judge that vehicle is current to remain static.
Preferably, described data buffer storage unit is SD card.
A device that improves vehicle-mounted DVR performance, comprising:
Vehicle-state detection module, for detection of the running status of vehicle;
Processing module, in the time that vehicle-state detection module detects vehicle in transport condition, sends read/write operation to hard disk and ceases and desist order, and send the 3rd fill order to execution module; And in the time that vehicle-state detection module detects that vehicle remains static, send read/write operation startup command to hard disk, and send the 4th fill order to execution module;
Execution module, for according to the 3rd fill order obtained by the vehicle-mounted video recording data buffer storage of Real-time Collection to data buffer storage unit; And according to the 4th fill order of obtaining, the vehicle-mounted video recording data of buffer memory in data buffer storage unit are moved to hard disk;
Hard disk, for storing vehicle-mounted video recording data; And be further used for ceasing and desisting order and stopping the read/write operation of hard disk according to the read/write operation of obtaining, and start the read/write operation of hard disk according to the read/write operation startup command of obtaining;
Data buffer storage unit, for the vehicle-mounted video recording data of buffer memory.
Preferably, described vehicle-state detection module is acceleration transducer, and the method that described acceleration transducer detects the running status of vehicle comprises:
The static acceleration rate threshold of initialization;
The accekeration of N vehicle of continuous acquisition at least one Spatial Dimension;
Whether the accekeration that judges described collection is all greater than static acceleration rate threshold, if so, judges that vehicle is current in transport condition, otherwise, judge that vehicle is current to remain static.
Preferably, described data buffer storage unit is SD card.
A kind of vehicle-mounted DVR, it comprise as above-mentioned another embodiment provide as described in the device of the vehicle-mounted DVR performance of raising, described device comprises:
Vehicle-state detection module, for detection of the running status of vehicle;
Processing module, in the time that vehicle-state detection module detects vehicle in transport condition, sends read/write operation to hard disk and ceases and desist order, and send the 3rd fill order to execution module; And in the time that vehicle-state detection module detects that vehicle remains static, send read/write operation startup command to hard disk, and send the 4th fill order to execution module;
Execution module, for according to the 3rd fill order obtained by the vehicle-mounted video recording data buffer storage of Real-time Collection to data buffer storage unit; And according to the 4th fill order of obtaining, the vehicle-mounted video recording data of buffer memory in data buffer storage unit are moved to hard disk;
Hard disk, for storing vehicle-mounted video recording data; And be further used for ceasing and desisting order and stopping the read/write operation of hard disk according to the read/write operation of obtaining, and start the read/write operation of hard disk according to the read/write operation startup command of obtaining;
Data buffer storage unit, for the vehicle-mounted video recording data of buffer memory.
Technical scheme by the invention described above can be found out, the method that the present invention adopts software algorithm to combine with hardware detection is all carried out the read/write operation of hard disk under the security context state being allowed to (vibrations are less or shockproof).Compared with prior art, in the serviceable life that adopts the present invention can greatly improve the hard disk of vehicle-mounted DVR, vehicle-mounted DVR can be operated under exceedingly odious vibration environment, improve its dependability, extended its serviceable life.
Brief description of the drawings
A kind of method flow schematic diagram that improves vehicle-mounted DVR performance that Fig. 1 provides for the embodiment of the present invention 1;
A kind of apparatus structure schematic diagram that improves vehicle-mounted DVR performance that Fig. 2 provides for the embodiment of the present invention 1;
A kind of method flow schematic diagram that improves vehicle-mounted DVR performance that Fig. 3 provides for the embodiment of the present invention 2;
A kind of apparatus structure schematic diagram that improves vehicle-mounted DVR performance that Fig. 4 provides for the embodiment of the present invention 2.
Realization, functional characteristics and the excellent effect of the object of the invention, be described further below in conjunction with specific embodiment and accompanying drawing.
Embodiment
Below in conjunction with the drawings and specific embodiments, technical scheme of the present invention is described in further detail, can be implemented so that those skilled in the art can better understand the present invention also, but illustrated embodiment is not as a limitation of the invention.
As shown in Figure 1, a kind of method that improves vehicle-mounted DVR performance that the embodiment of the present invention 1 provides, comprises the steps:
S10, the accekeration of detection vehicle at least one Spatial Dimension;
S11, in the time that the accekeration detecting is more than or equal to default judgment threshold, stop the read/write operation of hard disk, and by the vehicle-mounted video recording data buffer storage of Real-time Collection to data buffer storage unit; In the time that the accekeration detecting is less than default judgment threshold, starts the read/write operation of hard disk, and the vehicle-mounted video recording data of buffer memory in data buffer storage unit are moved to hard disk.
In the specific implementation, according to technique scheme, when the vehicle-mounted video recording data of buffer memory in data buffer storage unit are moved among the process of hard disk, detect as continued when the accekeration of vehicle at least one Spatial Dimension is greater than default judgment threshold, according to the method, system stops the read/write operation of hard disk immediately, ends data buffer storage unit and moves vehicle-mounted video recording data to hard disk.
Preferably, described data buffer storage unit is nonvolatile memory NAND FLASH, and the vehicle-mounted video recording data of its buffer memory are stored with the data structure of circular linked list.
In addition, described data buffer storage unit can also be other buffer memory devices, and for example described data buffer storage unit is SD card.
Particularly, adopt acceleration transducer to detect the acceleration situation at 3 Spatial Dimensions of vehicle, and the deceleration value detecting according to these obtains the vibrating state situation of vehicle, in the present embodiment, the vibrating state detection method of vehicle comprises the steps:
1) the interval sampling cycle of degree of will speed up sensor is made as T1, and times of collection is made as N.
2) the certain sampling period T1 in interval, collection vehicle for example,, at the accekeration of three Spatial Dimensions (fore-and-aft direction, side direction and three Spatial Dimensions of above-below direction), gathers n time altogether.
3) if the accekeration gathering for n time is all less than default judgment threshold, judge that the vibrating state when vehicle in front is safe condition, otherwise, judge that the vibrating state of working as vehicle in front is unsafe condition.
Particularly, for example in the present embodiment, the interval sampling cycle of detecting vehicle ambient condition was made as for 10 seconds, and continuous acquisition acceleration transducer state number of times is made as 3 times.If continuous 3 detected states are when safe, vehicle-state is safe condition.Otherwise vehicle-state is unsafe condition, now forbid hard disk to carry out read/write operation.
Particularly, the method for the vehicle-mounted DVR performance of raising that the embodiment of the present invention provides, carry out following steps according to the vibrating state of the above-mentioned vehicle detecting:
1) in the time vehicle being detected in unsafe condition, stop the read/write operation of hard disk, and by the vehicle-mounted video recording data buffer storage of Real-time Collection to data buffer storage unit; In the time detecting that vehicle is in a safe condition, start the read/write operation of hard disk, and the vehicle-mounted video recording data of buffer memory in data buffer storage unit are moved to hard disk.
Correspondingly, a kind of device that improves vehicle-mounted DVR performance that the present embodiment 1 provides, with reference to figure 2, comprising:
Data buffer storage unit 500, for the vehicle-mounted video recording data of buffer memory.
Particularly, described data buffer storage unit 500 is nonvolatile memory NAND FLASH, and the vehicle-mounted video recording data of its buffer memory are stored with the data structure of circular linked list.
Similarly, described data buffer storage unit 500 can also be other buffer memory devices, and for example described data buffer storage unit 500 is SD card.
In the present embodiment, in the time adopting the NAND FLASH of inner low capacity to do buffer memory, the concrete implementing procedure of the device of the vehicle-mounted DVR performance of raising that the present embodiment 1 provides comprises:
1) travel condition of vehicle detects by acceleration transducer 100, and the judgment threshold of 3 Spatial Dimensions is set according to the acceleration parameter of hard disk 400 safe read-writes in advance.In the time detecting that the accekeration of arbitrary Spatial Dimension exceedes the judgment threshold of setting, it is unsafe condition (being also precarious position) that vehicle is set, and now, forbids hard disk 400 to carry out read/write operation, wherein, described judgment threshold can arrange flexibly by software; When detecting in the time that the accekeration of each Spatial Dimension is all no more than the judgment threshold of setting, it is in a safe condition that vehicle in front is worked as in judgement.
2) during forbidding hard disk 400 read/write, vehicle-mounted video recording data are temporarily stored in the NAND FLASH of buffer zone, and the vehicle-mounted video recording data of buffer memory, with the structure storage of circular linked list, are filled with rear automatic covering.
3), in the time detecting that vehicle is in a safe condition, the vehicle-mounted video recording data of buffer zone NAND FLASH are shifted to hard disk 400.And in each data-moving process, if detect that vehicle-state becomes precarious position from safe condition, the action that stops immediately NAND FLASH and move vehicle-mounted video recording data to hard disk 400.
Correspondingly, the embodiment of the present invention also provides a kind of vehicle-mounted DVR, it comprise as above-described embodiment provide as described in the device of the vehicle-mounted DVR performance of raising, continue with reference to figure 2, described device comprises:
Data buffer storage unit 500, for the vehicle-mounted video recording data of buffer memory.
Concrete introduction for the device of the vehicle-mounted DVR performance of described raising please refer to describing in detail of above-described embodiment 1, this is not repeated to repeat here.
As shown in Figure 3, a kind of method that improves vehicle-mounted DVR performance that the embodiment of the present invention 2 provides, comprises the steps:
The running status of S20, detection vehicle;
S21, in the time vehicle being detected in transport condition, stop the read/write operation of hard disk 400, and by the vehicle-mounted video recording data buffer storage of Real-time Collection to data buffer storage unit 500; In the time that vehicle remains static, start the read/write operation of hard disk 400, and the vehicle-mounted video recording data of buffer memory in data buffer storage unit 500 are moved to hard disk 400.
Preferably, described data buffer storage unit 500 is SD card.In addition, those skilled in the art is not difficult to expect that described data buffer storage unit 500 can also be the memory device of other types, and for example described data buffer storage unit 500 is nonvolatile memory NAND FLASH.
Preferably, in described step S20, the method that detects the running status of vehicle comprises:
S201, the static acceleration rate threshold of initialization;
S202, the accekeration of N vehicle of continuous acquisition at least one Spatial Dimension;
S203, judge whether the accekeration of described collection is all greater than static acceleration rate threshold, if so, judges that vehicle is current in transport condition, otherwise, judge that vehicle is current to remain static.
In the specific implementation, the large I of the sampling period of collection vehicle accekeration and described N value arranges according to actual conditions, herein it is not limited.
The mode that more than detects the running status of vehicle adopts acceleration transducer to realize, and in specific implementation process, those skilled in the art can also realize by other detection meanss, for example, examine the ignition switch state of car vehicle, to detect the running status of vehicle.
Correspondingly, a kind of device that improves vehicle-mounted DVR performance that the embodiment of the present invention 2 provides, with reference to figure 4, it comprises:
Vehicle-state detection module 600, for detection of the running status of vehicle;
Data buffer storage unit 500, for the vehicle-mounted video recording data of buffer memory.
Preferably, described data buffer storage unit 500 is SD card.In addition, similarly, those skilled in the art is not difficult to expect that described data buffer storage unit 500 can also be the memory device of other types, and for example described data buffer storage unit 500 is nonvolatile memory NAND FLASH.
In the present embodiment 2, preferably, described vehicle-state detection module 600 is acceleration transducer, and the method that described acceleration transducer detects the running status of vehicle comprises:
1) the static acceleration rate threshold of initialization;
2) accekeration of N vehicle of continuous acquisition at least one Spatial Dimension;
3) whether the accekeration that judges described collection is all greater than static acceleration rate threshold, if so, judges that vehicle is current in transport condition, otherwise, judge that vehicle is current to remain static.
In the specific implementation, the sampling period of acceleration transducer collection vehicle accekeration and the large I of described N value arrange according to actual conditions, herein it are not limited.
The mode that more than detects the running status of vehicle adopts acceleration transducer to realize, and in specific implementation process, those skilled in the art can also realize by other detection meanss, for example, examine the ignition switch state of car vehicle, to detect the running status of vehicle.
For example, in the present embodiment 2, in the time adopting outside SD card to do large capacity cache, the concrete implementing procedure of the device of the vehicle-mounted DVR performance of described raising comprises:
1) system initialization, setting in advance static acceleration rate threshold is a0, system starts internal memory NAND FLASH to carry out bad piece detection, if any bad piece, rejects operation.
2) the interval sampling period of 1 minute, adopts acceleration transducer to detect the accekeration of vehicle on 3 Spatial Dimensions, altogether gathers 3 times.
3) if the accekeration gathering for 3 times is all greater than the static acceleration rate threshold a0 of setting, judge that current motoring condition is transport condition, otherwise, be stationary state.
4), forbid hard disk 400 to carry out read/write operation during in transport condition at vehicle, vehicle-mounted video recording data are temporarily stored in SD card.
5) in the time that vehicle remains static, delay cut-off, at this moment between section in, vehicle-mounted DVR will complete the data-moving work to hard disk 400 by the vehicle-mounted video recording data-moving in SD card.
6) system closedown.
In this embodiment 2; owing to adopting SD card to do buffer memory; its buffer zone is enough large; can ensure that the vehicle-mounted video recording data of vehicle under transport condition only write SD card buffer and hard disk 400 do not carried out to read/write operation; thereby avoid, in vehicle operating process, hard disk 400 is carried out to read/write operation, protected hard disk 400.Even along with the raising of customer requirement, the data layout of the vehicle-mounted video recording data of vehicle-mounted DVR upgrades to D1 by CIF from now on, also can arrive by the mode of external SD card expansion the requirement of protection hard disk 400.
Correspondingly, the present embodiment 2 provides a kind of vehicle-mounted DVR, it comprise as above-mentioned another embodiment provide as described in the device of the vehicle-mounted DVR performance of raising, continue with reference to figure 4, described device comprises:
Vehicle-state detection module 600, for detection of the running status of vehicle;
Data buffer storage unit 500, for the vehicle-mounted video recording data of buffer memory.
The concrete introduction of the device of the vehicle-mounted DVR performance of described raising of mentioning for this embodiment 2, please refer to describing in detail of above-described embodiment 2, this is not repeated to repeat here.
The foregoing is only the preferred embodiments of the present invention; not thereby limit the scope of the claims of the present invention; every equivalent structure or conversion of equivalent flow process that utilizes instructions of the present invention and accompanying drawing content to do; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present invention.
Claims (12)
1. a method that improves vehicle-mounted DVR performance, is characterized in that, comprising:
Detect the accekeration of vehicle at least one Spatial Dimension;
In the time that the accekeration detecting is more than or equal to default judgment threshold, stop the read/write operation to hard disk, and by the vehicle-mounted video recording data buffer storage of Real-time Collection to data buffer storage unit; In the time that the accekeration detecting is less than default judgment threshold, starts the read/write operation of hard disk, and the vehicle-mounted video recording data of buffer memory in data buffer storage unit are moved to hard disk.
2. the method for the vehicle-mounted DVR performance of raising as claimed in claim 1, is characterized in that, described data buffer storage unit is nonvolatile memory NAND FLASH, and the vehicle-mounted video recording data of its buffer memory are stored with the data structure of circular linked list.
3. a device that improves vehicle-mounted DVR performance, is characterized in that, comprising:
Acceleration transducer, the accekeration for detection of vehicle at least one Spatial Dimension;
Processing module, while being more than or equal to default judgment threshold, sending read/write operation to hard disk and ceases and desist order, and send the first fill order to execution module for the accekeration detecting when acceleration transducer; And the accekeration detecting when acceleration transducer is while being less than default judgment threshold, sends read/write operation startup command, and send the second fill order to execution module to hard disk;
Execution module, for according to the first fill order of obtaining by the vehicle-mounted video recording data buffer storage of Real-time Collection to data buffer storage unit; And according to the second fill order of obtaining, the vehicle-mounted video recording data of buffer memory in data buffer storage unit are moved to hard disk;
Hard disk, for storing vehicle-mounted video recording data; And be further used for ceasing and desisting order and stopping the read/write operation of hard disk according to the read/write operation of obtaining, and start the read/write operation of hard disk according to the read/write operation startup command of obtaining;
Data buffer storage unit, for the vehicle-mounted video recording data of buffer memory.
4. the device of the vehicle-mounted DVR performance of raising as claimed in claim 3, is characterized in that, described data buffer storage unit is nonvolatile memory NAND FLASH, and the vehicle-mounted video recording data of its buffer memory are stored with the data structure of circular linked list.
5. a vehicle-mounted DVR, is characterized in that, comprises the device of the vehicle-mounted DVR performance of raising as described in claim 3 or 4.
6. a method that improves vehicle-mounted DVR performance, is characterized in that, comprising:
Detect the running status of vehicle;
In the time vehicle being detected in transport condition, stop the read/write operation of hard disk, and by the vehicle-mounted video recording data buffer storage of Real-time Collection to data buffer storage unit; In the time that vehicle remains static, start the read/write operation of hard disk, and the vehicle-mounted video recording data of buffer memory in data buffer storage unit are moved to hard disk.
7. the method for the vehicle-mounted DVR performance of raising as claimed in claim 6, is characterized in that, the method that detects the running status of vehicle comprises:
The static acceleration rate threshold of initialization;
The accekeration of N vehicle of continuous acquisition at least one Spatial Dimension;
Whether the accekeration that judges described collection is all greater than static acceleration rate threshold, if so, judges that vehicle is current in transport condition, otherwise, judge that vehicle is current to remain static.
8. the method for the vehicle-mounted DVR performance of raising as claimed in claim 6, is characterized in that, described data buffer storage unit is SD card.
9. a device that improves vehicle-mounted DVR performance, is characterized in that, comprising:
Vehicle-state detection module, for detection of the running status of vehicle;
Processing module, in the time that vehicle-state detection module detects vehicle in transport condition, sends read/write operation to hard disk and ceases and desist order, and send the 3rd fill order to execution module; And in the time that vehicle-state detection module detects that vehicle remains static, send read/write operation startup command to hard disk, and send the 4th fill order to execution module;
Execution module, for according to the 3rd fill order obtained by the vehicle-mounted video recording data buffer storage of Real-time Collection to data buffer storage unit; And according to the 4th fill order of obtaining, the vehicle-mounted video recording data of buffer memory in data buffer storage unit are moved to hard disk;
Hard disk, for storing vehicle-mounted video recording data; And be further used for ceasing and desisting order and stopping the read/write operation of hard disk according to the read/write operation of obtaining, and start the read/write operation of hard disk according to the read/write operation startup command of obtaining;
Data buffer storage unit, for the vehicle-mounted video recording data of buffer memory.
10. the device of the vehicle-mounted DVR performance of raising as claimed in claim 9, is characterized in that, described vehicle-state detection module is acceleration transducer, and the method that described acceleration transducer detects the running status of vehicle comprises:
The static acceleration rate threshold of initialization;
The accekeration of N vehicle of continuous acquisition at least one Spatial Dimension;
Whether the accekeration that judges described collection is all greater than static acceleration rate threshold, if so, judges that vehicle is current in transport condition, otherwise, judge that vehicle is current to remain static.
The device of the vehicle-mounted DVR performance of 11. raising as claimed in claim 9, is characterized in that, described data buffer storage unit is SD card.
12. 1 kinds of vehicle-mounted DVR, is characterized in that, comprise the device of the vehicle-mounted DVR performance of raising as described in claim as arbitrary in claim 9 to 11.
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| CN104992720A (en) * | 2015-07-06 | 2015-10-21 | 浙江宇视科技有限公司 | Shock-proof method and system of vehicle-mounted mechanical hard disk and vehicle-mounted recording device |
| CN105448316A (en) * | 2015-11-24 | 2016-03-30 | 厦门雅迅网络股份有限公司 | Vehicle-mounted hard disk shockproof protection method and device based on position sharing |
| CN105469815A (en) * | 2015-11-24 | 2016-04-06 | 厦门雅迅网络股份有限公司 | Vehicle-mounted hard-disk shockproof protection method based on road condition perception and apparatus thereof |
| CN106843752A (en) * | 2016-12-29 | 2017-06-13 | 中国电子科技集团公司第五十二研究所 | A kind of anti-vibration protected method and device of disk based on abnormality detection |
| CN106981297A (en) * | 2016-01-15 | 2017-07-25 | 厦门雅迅网络股份有限公司 | The vehicle-mounted hard disks guard method detected based on tire pressure and its system |
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| CN109194894A (en) * | 2018-08-30 | 2019-01-11 | 努比亚技术有限公司 | A kind of projection method for recording, equipment and computer readable storage medium |
| 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 |
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| 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 |
| CN106981297A (en) * | 2016-01-15 | 2017-07-25 | 厦门雅迅网络股份有限公司 | The vehicle-mounted hard disks guard method detected based on tire pressure and its system |
| CN107346566A (en) * | 2016-05-05 | 2017-11-14 | 昆山研达电脑科技有限公司 | Vehicle-mounted DVR date storage method |
| CN106843752B (en) * | 2016-12-29 | 2020-04-21 | 中国电子科技集团公司第五十二研究所 | Disk shockproof protection method and device based on anomaly detection |
| CN106843752A (en) * | 2016-12-29 | 2017-06-13 | 中国电子科技集团公司第五十二研究所 | A kind of anti-vibration protected method and device of disk based on abnormality detection |
| CN108874299A (en) * | 2017-05-16 | 2018-11-23 | 中兴通讯股份有限公司 | Data transmission method and device, storage medium |
| CN108279989A (en) * | 2017-12-13 | 2018-07-13 | 北京中电万联科技股份有限公司 | Vehicle-mounted critical data method for secure storing and its system |
| CN108279989B (en) * | 2017-12-13 | 2021-09-03 | 北京中电万联科技股份有限公司 | Vehicle-mounted key data safe storage method and system thereof |
| 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 |
| CN109194894A (en) * | 2018-08-30 | 2019-01-11 | 努比亚技术有限公司 | A kind of projection method for recording, equipment and computer readable storage medium |
| 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 |
| CN113228624A (en) * | 2021-01-25 | 2021-08-06 | 深圳市锐明技术股份有限公司 | Video storage method of vehicle-mounted equipment and vehicle-mounted equipment |
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Application publication date: 20140604 |