CN103593407A - Data file storage and playback methods - Google Patents
Data file storage and playback methods Download PDFInfo
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- CN103593407A CN103593407A CN201310488983.3A CN201310488983A CN103593407A CN 103593407 A CN103593407 A CN 103593407A CN 201310488983 A CN201310488983 A CN 201310488983A CN 103593407 A CN103593407 A CN 103593407A
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- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F16/00—Information retrieval; Database structures therefor; File system structures therefor
- G06F16/20—Information retrieval; Database structures therefor; File system structures therefor of structured data, e.g. relational data
Abstract
The invention relates to data file storage and playback methods. Data files are stored in forms of file header information, station equipment information and historical station equipment information. The file header information includes data of file version numbers, station numbers, station names and the like, the station equipment information is composed of fixed-length equipment number and variable-length equipment assembly charts, and the historical station equipment information is composed of station information frames. Playback software plays back historical picture information of any stations on the basis of data file storage formats. By the methods, the historical picture information of any stations can be played back in any places conveniently.
Description
Technical field
The present invention relates to technical field of information storage, relate in particular to a kind of storage and back method of data file.
Background technology
With regard to the storage of information, reasonably storage mode can improve the utilization factor of software, has also facilitated user.Especially be embodied in the industry that relates to production safety, for example railway transportation.In these industries, the analysis of accident is the Main Means of this type of accident of prevention.Station field information playback function in the past is all integrated in microcomputer monitoring, it is man-to-man playback, play back center field information is inconvenient, and be difficult for the playback through field, improved station, in the prior art, the historical picture information that playback is in any place stood arbitrarily is very inconvenient.
Summary of the invention
The object of the invention is to propose a kind of storage and back method of data file, the historical picture information of standing arbitrarily to realize playback in any place.
To achieve these goals, an aspect of of the present present invention has proposed a kind of storage means of data file, and described method comprises
By system initialization;
Judge whether data file to be stored and current history data file to contrast;
If above-mentioned data file to be stored and current history data file were carried out to contrast, formed information frame;
If above-mentioned data file to be stored and current history data file were not carried out to contrast, judged whether to exist current data file to be stored;
When above-mentioned file does not exist,, according to the file header information of this catalogue and station field device information, regenerate playback of data file;
When above-mentioned file exists, read file header information and station field device information in the date file in history data file;
Judge that whether file header information and station field device information in data file to be stored and above-mentioned date file is in full accord;
If above-mentioned information is in full accord, form information frame;
When if above-mentioned INFORMATION OF INCOMPLETE is consistent, above-mentioned history data file is clipped to other catalogues;
According to the file header information of this catalogue and station field device information, regenerate playback of data file;
Form information frame;
Judge whether to regenerate date file;
When needs regenerate the date during file, according to predetermined requirement, date of formation file according to current time, stores information;
If do not need to regenerate date file,, directly according to current time, information stored.
The beneficial effect of the program of the present invention is by said method, data file to be stored, to facilitate the playback of data file.
The invention allows for the system corresponding with said method.
Preferably, the storage format of data file comprises file header information, the field device information of standing and station field device historical information, and wherein file header information is regular length, has comprised fileversion number, a numbering of stand and field, a station title; The field device information of standing comprises the number of devices of fixed length and elongated equipment loader table; The field device historical information of standing has comprised station field information frame, and its length is determined by fileversion number and number of devices.
Another aspect of the present invention has proposed a kind of back method of data file, and described method comprises
By system initialization;
The data file that selection will load;
Read the file header information in this document;
Judge whether the fileversion number in above-mentioned file header information obtains the support of the version of program operation;
When not having when supported, prompting software is the version of supported data file not, needs the playback software of new supported data FileVersion;
When supported, read station field device information, display station field picture;
Select start time and the end time of playback;
Judge that whether the above-mentioned time is legal;
When the above-mentioned time is illegal, prompt time is illegal, reselects start time and the end time of playback;
When the above-mentioned time is legal, search playback data file, positioning time point;
Play back center field picture.
The beneficial effect of the program of the present invention is can realize the playback to a station historical picture anywhere by said method.
The invention allows for the system corresponding with said method.
Accompanying drawing explanation
Fig. 1 shows the Stored Procedure figure of playback of data file involved in the present invention.
Fig. 2 shows replayed section process flow diagram involved in the present invention.
Embodiment
With reference to the accompanying drawings the specific embodiment of the present invention is further described.
The storage of playback of data file is the basis of realizing a station playback, and the storage of data file in the present invention is mainly comprised of three parts: file header information, the field device information of standing and station field device historical information.First's file header information is regular length, wherein comprised fileversion number, the data such as the numbering of standing and a station title, mainly for field, initialization station and selection communication protocol, wherein station numbering, stand field a title, complete with regard to having planned when enterprise railway operation starts, there will not be conflict or disappearance.Second portion is station field device information, and it is comprised of the number of devices of fixed length and elongated equipment loader table, and its task is not rely on external file independently to complete loading.Third part station field device historical information, it is comprised of station field information frame, and this part of message length is to be determined by fileversion number and number of devices, and parsing is to be decided by fileversion number.
The content that the playback of playback software is stood arbitrarily, it is according to being exactly the form of the storage of data file.
The storage means of data file involved in the present invention as shown in Figure 1, storage means according to the related data file of the specific embodiment of the present invention comprises the following steps: first by system initialization, as shown in S101 in Fig. 1, judge whether afterwards data file to be stored and current history data file to contrast, as shown in S102 in Fig. 1, if above-mentioned data file to be stored and current history data file were carried out to contrast, form information frame, as shown in S108 in Fig. 1, if above-mentioned data file to be stored and current history data file were not carried out to contrast, judge whether to have existed current data file to be stored, as shown in S103 in Fig. 1, when above-mentioned file does not exist, according to the file header information of this catalogue and station field device information, regenerate playback of data file, as shown in S107 in Fig. 1, when above-mentioned file exists, read file header information and station field device information in the date file in history data file, as shown in S104 in Fig. 1, judge that afterwards whether file header information and station field device information in data file to be stored and above-mentioned date file is in full accord, as shown in S105 in Fig. 1, if above-mentioned information is in full accord, form information frame, as shown in S108 in Fig. 1, when if above-mentioned INFORMATION OF INCOMPLETE is consistent, above-mentioned history data file is clipped to other catalogues, the file header information of different directories is different from station field device information, as shown in S106 in Fig. 1, afterwards according to the file header information of this catalogue and station field device information, regenerate playback of data file, as shown in S107 in Fig. 1, form afterwards information frame, as shown in S108 in Fig. 1, judge whether afterwards to regenerate date file, for example, in zero point or changeover time of next day, as shown in S109 in Fig. 1, when needs regenerate the date during file, as requested, for example, according to consecutive days or relieve interval, date of formation file, as shown in S110 in Fig. 1, afterwards according to current time, information is stored, as shown in S111 in Fig. 1, if do not need to regenerate date file, directly according to current time, information is stored, as shown in S111 in Fig. 1.
The playback process flow diagram of data file as shown in Figure 2, first by system initialization, as shown in S201 in Fig. 2, select afterwards the data file that will load, as shown in S202 in Fig. 2, read the file header information in this document, as shown in S203 in Fig. 2, judge afterwards whether the fileversion number in above-mentioned file header information obtains the support of the version of program operation, if the version number of above-mentioned file is V2.0, and the version number of playback software is V1.0, playback software just cannot playback so, and the version number that works as above-mentioned file is V1.0, and the version number of playback software is V2.0 or highest version more, support so playback, as shown in S204 in Fig. 2, when the fileversion number in above-mentioned file header information does not obtain the support of version of program operation, prompting software is the version of supported data file not, the playback software that needs new supported data FileVersion, as shown in S205 in Fig. 2, when the fileversion number in above-mentioned file header information obtains the support of version of program operation, read station field device information, display station field picture, as shown in S206 in Fig. 2, select afterwards start time and the end time of playback, as shown in S207 in Fig. 2, judge that afterwards whether the above-mentioned time is legal, as shown in S208 in Fig. 2, when the above-mentioned time is illegal, prompt time is illegal, as shown in S209 in Fig. 2, return to step S207, reselect start time and the end time of playback, when the above-mentioned time is legal, search playback data file, positioning time point, as shown in S210 in Fig. 2, play back center field picture afterwards, as shown in S211 in Fig. 2.
The storage of data file involved in the present invention and back method complete the playback function of playback software to field, any station by special file memory format is set.Overcome playback software of the prior art and be embedded in the monitoring of software of station, or relatively fixing, the convenient, flexible not shortcoming of its playback mode.Method involved in the present invention only need to copy according to field, station file and the playback device software of method storage involved in the present invention, can carry out direct playback in any place, not only convenient but also quick.
Suppose to have two stations, A and B, wherein A station comprises equipment a1, a2, a3, field, B station comprises equipment b1, b2, b3, b4.The A of take below station is example, and the storage and reproduce of data file is described:
Mo is the monitoring facilities of field, A station, in the configuration file of Mo, the required version number of storage file, the information such as a title, equipment loader table of standing are defined, specifically fileversion number is defined as to V1.0, a title of standing is defined as " enterprise station ", an ID that stands is defined as 1, the specifying information of equipment loader table indication equipment, does not just describe in detail at this, can add as required the content needing.
Start monitoring facilities, after the information of arriving at a station in reception, enter into memory module, judge the fileversion number of the data file that this is to be stored, the field information of standing, whether the data message of equipment loader table and reception and current history data file carried out relatively, here relatively just after the startup of program, the comparison of carrying out when entering into this memory module for the first time, also be unique once comparing, its object is, if today storage is 20130801 file, program runs to point in the mornings 10, need to upgrade version, by original V1.0, be upgraded to V2.0, so since at 11 in the morning, the data of storage are exactly to store according to the form of V2.0, if our storage file is to take consecutive days as unit storage, so just the file of V1.0 version need to be moved to other position, again the file of V2.0 version was stored with 20130801 date, the file of the file of V1.0 version and V2.0 version cannot be placed in a file, if they are placed in a file, not can not playback like this, what just playback software can design is very numerous and diverse.When not carrying out above-mentioned comparison, enter comparison step 103, first judge whether 20130801 such storage files, if there is no 20130801 such files, just do not need to have compared, do not exist V1.0 and V2.0 version to leave the situation in same file in yet, directly just fileversion number, the field information of standing and equipment loader table can be deposited hereof, the header of file has comprised V1.0 like this, QYZ, 1 and equipment loader table.
If entered after step 103, judge history of existence data file, whether that will relate to monitoring facilities from new startup at fileversion number, the field information of standing, there is change in equipment loader table, namely entered step 104, the file header information of history data file and station field device information are read out, enter step 105, by the file header information of data file to be stored and station field device information with restart after the fileversion number that configures, the field information of standing, the contrast of equipment loader table, if in full accord, just illustrate that all information does not all have moving, so just can be directly at the afterbody of existing history data file, directly append a station change information, entered step 108, if changed, for example version number has become V2.0 from V1.0, former use 4 bits that may be certain teleseme represent, find now not, add 5 to, so just there is the change of version, playback device also must with highest version at least want V2.0 more than, guarantee reads correctly like this, for the data file of V1.0 version and V2.0 version is separated, the data file of V1.0 version will be clipped to below other file so, enter step 106, enter afterwards step 107, according to the configuration of monitoring facilities, with V2.0 version, generate new history data file, the header of this document comprises V2.0, QYZ, 1 and equipment loader table.Such object similarly is that the file of MP3 format and the file of MP4 form can not be placed in an audio file, namely a first song first half head is MP3 format, later half head is MP4 form, so perhaps can play, so just higher to the requirement of playback device.Enter 107 steps and also do not generate complete data file here, to first judge whether it is suitable date file, whether need to generate new history data file according to regular hour rule, after carrying out above-mentioned judgement, above-mentioned file header information is inserted in the above-mentioned history data file regenerating, enters for the first time this memory module EOP (end of program).
When entering this memory module for the second time, illustrate that new field, station changes expression information and sended over, enter step 102, when monitoring starts, in step 102, there is a variable to represent that this step carried out, just directly enter step 103 entering this step later, concrete, when field, A station comprises equipment a1, a2, during a3, its state status represents with station field information frame, the field device information change of namely standing frame, here suppose 2 byte representations for status information of each equipment, 16 bits namely, the color of 0 to 7 bit representation equipment, the color of 8 to 13 bit representation equipment characters, 14, the state of 15 bit representation particular devices (as the antiposition of determining of track switch), there are 3 equipment field, A station so, so stand, an expression information is just comprised of 3*2 byte, if the time is comprised of 10 bytes, the length of this frame is exactly 6 bytes that 10 bytes of time add facility information so, totally 16 bytes.Open 20130801 files, because this file has been deposited corresponding file header information when entering memory module for the first time, just passable as long as a station field device change information is inserted into the afterbody of file so, when there is field, station change information, the afterbody that station field device information change frame is inserted into file has just been realized information storage, and program leaves it at that.
Replayed section:
Replayed section is relatively easy, first be system initialization, step 201, select afterwards the data file of the playback of wanting, step 202, file header information in file reading, step 203, judge afterwards whether the fileversion number in above-mentioned file header information obtains the support of the version of program operation, as the V2.0 of the version number of above-mentioned file, and the version number of playback software is V1.0, playback software just cannot playback so, and as the V1.0 of version number of above-mentioned file, and the version number of playback software is V2.0 or highest version more, support so playback, step 204, when the fileversion number in above-mentioned file header information does not obtain the support of version of program operation, prompting software is the version of supported data file not, the playback software that needs new supported data FileVersion, step S205, when the fileversion number in above-mentioned file header information obtains the support of version of program operation, read station field device information, display station field picture, step 206, select afterwards start time and the end time of playback, step 207, judge that afterwards whether the above-mentioned time is legal, step 208, when the above-mentioned time is illegal, prompt time is illegal, step 209, return to step 207, reselect start time and the end time of playback, when the above-mentioned time is legal, search playback data file, positioning time point, step 210, play back center field picture afterwards, step 211.
Table 1 shows a difference for A station and a B station file header information, suppose to store with same version number, so other several aspect A station and the B field of standing be diverse.Definition version number represents by 4 bytes, V1.0 version is exactly 0001 so, a title of standing represents by 20 bytes, the numbering of standing represents with four bytes, and field, the station numbering at A station be exactly that the field, station at 0001, B station numbers is exactly 0002 so, number of devices two byte representations, the number of devices of field, A station is 03, and account form is high byte * 256+ low byte, for A station, is 0*256+3.The number of devices of field, B station is 04, if (the full detail of the some equipment of field, 50 byte representation stations of 50 byte representations for each equipment, comprising information such as device name, device coordinates), the equipment loader table information of field, A station just has 150 bytes, and the equipment loader table information of field, B station has 200 bytes.
Table 1
Claims (6)
1. a storage means for data file, is characterized in that: described method comprises
By system initialization;
Judge whether data file to be stored and current history data file to contrast;
If above-mentioned data file to be stored and current history data file were carried out to contrast, formed information frame;
If above-mentioned data file to be stored and current history data file were not carried out to contrast, judged whether to exist current data file to be stored;
When above-mentioned file does not exist,, according to the file header information of this catalogue and station field device information, regenerate playback of data file;
When above-mentioned file exists, read file header information and station field device information in the date file in history data file;
Judge that whether file header information and station field device information in data file to be stored and above-mentioned date file is in full accord;
If above-mentioned information is in full accord, form information frame;
When if above-mentioned INFORMATION OF INCOMPLETE is consistent, above-mentioned history data file is clipped to other catalogues;
According to the file header information of this catalogue and station field device information, regenerate playback of data file;
Form information frame;
Judge whether to regenerate date file;
When needs regenerate the date during file, according to predetermined requirement, date of formation file according to current time, stores information;
If do not need to regenerate date file,, directly according to current time, information stored.
2. storage means according to claim 1, it is characterized in that: the storage format of data file comprises file header information, the field device information of standing and station field device historical information, wherein file header information is regular length, has comprised fileversion number, a numbering of stand and field, a station title; The field device information of standing comprises the number of devices of fixed length and elongated equipment loader table; The field device historical information of standing has comprised station field information frame, and its length is determined by fileversion number and number of devices.
3. a storage system for data file, is characterized in that: described system comprises
By the device of system initialization;
Judge whether the device that data file to be stored and current history data file are contrasted;
If above-mentioned data file to be stored and current history data file were carried out to contrast, formed the device of information frame;
If above-mentioned data file to be stored and current history data file were not carried out to contrast, judged whether to exist the device of current data file to be stored;
When above-mentioned file does not exist, according to the file header information of this catalogue and station field device information, regenerate the device of playback of data file;
When above-mentioned file exists, read the device of the file header information in the date file in history data file and the field device information of standing;
Judge file header information and the whether on all four device of station field device information in data file to be stored and above-mentioned date file;
If above-mentioned information is in full accord, form the device of information frame;
When if above-mentioned INFORMATION OF INCOMPLETE is consistent, above-mentioned history data file is clipped to the device of other catalogues;
According to the file header information of this catalogue and station field device information, regenerate the device of playback of data file;
The device that forms information frame;
Judge whether to regenerate the device of date file;
When needs regenerate the date during file, according to predetermined requirement, date of formation file according to current time, the device that information is stored;
If do not need to regenerate date file, directly according to current time, the device that information is stored.
4. storage system according to claim 3, it is characterized in that: the storage format of data file comprises file header information, the field device information of standing and station field device historical information, wherein file header information is regular length, has comprised fileversion number, a numbering of stand and field, a station title; The field device information of standing comprises the number of devices of fixed length and elongated equipment loader table; The field device historical information of standing has comprised station field information frame, and its length is determined by fileversion number and number of devices.
5. a back method for data file, is characterized in that: described method comprises
By system initialization;
The data file that selection will load;
Read the file header information in this document;
Judge whether the fileversion number in above-mentioned file header information obtains the support of the version of program operation;
When not having when supported, prompting software is the version of supported data file not, needs the playback software of new supported data FileVersion;
When supported, read station field device information, display station field picture;
Select start time and the end time of playback;
Judge that whether the above-mentioned time is legal;
When the above-mentioned time is illegal, prompt time is illegal, reselects start time and the end time of playback;
When the above-mentioned time is legal, search playback data file, positioning time point;
Play back center field picture.
6. a playback system for data file, is characterized in that: described system comprises
By the device of system initialization;
The device of the data file that selection will load;
Read the device of the file header information in this document;
Judge whether fileversion number in above-mentioned file header information obtains the device of support of the version of program operation;
When not having when supported, prompting software is the version of supported data file not, needs the device of the playback software of new supported data FileVersion;
When supported, read station field device information, the device of display station field picture;
Select the start time of playback and the device of end time;
Judge the device whether above-mentioned time is legal;
When the above-mentioned time is illegal, prompt time is illegal, reselects the device of start time and the end time of playback;
When the above-mentioned time is legal, search playback data file, positioning time point device;
The device of play back center field picture.
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| CN112383757A (en) * | 2020-11-16 | 2021-02-19 | 四川九洲空管科技有限责任公司 | Unmanned aerial vehicle comprehensive monitoring data multi-mode playback method and system |
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| Publication number | Publication date |
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| CN103593407B (en) | 2017-01-04 |
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