CN110796765A - Data storage method and device - Google Patents
Data storage method and device Download PDFInfo
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- CN110796765A CN110796765A CN201911105194.0A CN201911105194A CN110796765A CN 110796765 A CN110796765 A CN 110796765A CN 201911105194 A CN201911105194 A CN 201911105194A CN 110796765 A CN110796765 A CN 110796765A
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- G—PHYSICS
- G07—CHECKING-DEVICES
- G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
- G07C5/00—Registering or indicating the working of vehicles
- G07C5/08—Registering or indicating performance data other than driving, working, idle, or waiting time, with or without registering driving, working, idle or waiting time
- G07C5/0841—Registering performance data
- G07C5/085—Registering performance data using electronic data carriers
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- G—PHYSICS
- G07—CHECKING-DEVICES
- G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
- G07C5/00—Registering or indicating the working of vehicles
- G07C5/008—Registering or indicating the working of vehicles communicating information to a remotely located station
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- G—PHYSICS
- G07—CHECKING-DEVICES
- G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
- G07C5/00—Registering or indicating the working of vehicles
- G07C5/08—Registering or indicating performance data other than driving, working, idle, or waiting time, with or without registering driving, working, idle or waiting time
- G07C5/0808—Diagnosing performance data
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Abstract
The application provides a data storage method and a data storage device, which relate to the technical field of unmanned driving, and the data storage method comprises the following steps: detecting the size of the residual space stored by the recorder; when the size of the residual space is smaller than the preset value, the stored old data is covered by the newly obtained data, the storage condition of the recorder is monitored by detecting the size of the residual space stored by the recorder, and if the size of the residual space is too small, the newly obtained data cannot be recorded.
Description
Technical Field
The application relates to the technical field of unmanned driving, in particular to a data storage method and device.
Background
The black box is a common name of the electronic flight recorder. An instrument for recording aircraft flight and performance parameters. The information recorded by the flight recorder can be used for analyzing the flight accident, and people can send the processed data and voice records into a flight simulator according to the data and voice records recorded before the plane crashes, so that the accident process is reproduced, and the accident reason is analyzed vividly. The black box in the driving process of the unmanned vehicle needs to be provided as a safety record in the driving process in the daily operation process so as to ensure that the operation safety of the unmanned vehicle can be relied on.
Disclosure of Invention
An object of the embodiments of the present application is to provide a data storage method and apparatus, so as to solve the problem that the latest driving data of an unmanned vehicle cannot be accurately recorded in the prior art.
In a first aspect, an embodiment of the present application provides a data storage method, where the method includes: detecting the size of the residual space stored by the recorder; and when the size of the residual space is smaller than a preset value, the stored old data is covered by the newly obtained data.
In the implementation process, the storage condition of the recorder is monitored by detecting the size of the residual space stored by the recorder, and if the size of the residual space is too small, newly obtained data cannot be recorded, so that the newly obtained data is used for covering stored old data when the size of the residual space is smaller than a preset value, the newly obtained data can be accurately recorded, and the latest driving data of the unmanned vehicle can be accurately recorded.
Optionally, overwriting the stored old data with the newly obtained data includes: searching the data with the longest storage time in the stored old data; and covering the data with the longest storage time by using the newly obtained data, and ensuring that the data with the longest storage time in the storage of the recorder is covered by the newly obtained data, so that the data recorded by the recorder is the latest data.
Optionally, after overwriting the stored old data with the newly obtained data, the method further includes: whether the vehicle is in the fault state or not is detected, if yes, the stored old data are stopped being covered by the newly obtained data, and the recorder does not continue to store the newly obtained data when the vehicle is in the fault state, so that the data of the vehicle in the fault state can be accurately recorded, and then a worker can analyze the data and analyze the fault reason.
Optionally, after overwriting the stored old data with the newly obtained data, the method further includes: whether the vehicle is in a fault state is detected, if yes, the stored old data are stopped to be covered by the newly obtained data after the preset time period, and when the vehicle breaks down, the recorder stops storing the newly obtained data after the preset time period, so that the data before and after the fault state of the vehicle can be accurately recorded, and further, a worker can analyze the data and analyze the fault reason.
Optionally, after overwriting the stored old data with the newly obtained data, the method further includes: whether the vehicle is in a fault state is detected, if yes, a preset amount of new data is continuously obtained, the stored old data is covered with the new data, and when the vehicle breaks down, the recorder continuously obtains the preset amount of new data to guarantee that the data before and after the vehicle breaks down can be accurately recorded, so that a worker can analyze the data and analyze the fault reason.
Optionally, the method further comprises: the storage request sent by the remote end is received, the currently received data are sent to the storage space of the remote end, the currently received data are sent to the remote end to be stored, and the data stored by the recorder can be analyzed in real time by the remote end to obtain the running state of the vehicle.
In a second aspect, an embodiment of the present application provides a data storage device, including: the residual space detection module is used for detecting the size of the residual space stored by the recorder; and the covering module is used for covering the stored old data with the newly obtained data when the size of the residual space is smaller than a preset value.
Optionally, the covering module comprises: the searching unit is used for searching the data with the longest storage time in the stored old data; and the covering unit is used for covering the data with the longest storage time by using the newly obtained data.
Optionally, the apparatus further comprises: and the first fault detection module is used for detecting whether the vehicle is in a fault state, and if so, stopping covering the stored old data with the newly obtained data.
Optionally, the apparatus further comprises: and the second fault detection module is used for detecting whether the vehicle is in a fault state, and if so, stopping covering the stored old data with the newly obtained data after a preset time period.
Optionally, the apparatus further comprises: and the third fault detection module is used for detecting whether the vehicle is in a fault state, if so, continuously acquiring a preset amount of new data, and covering the stored old data with the new data.
Optionally, the apparatus further comprises: and the remote module is used for receiving the storage request sent by the remote end and sending the currently received data to the storage space of the remote end.
In a third aspect, an embodiment of the present application provides a recorder, including a processor and a memory, where the memory stores computer readable instructions, and when the computer readable instructions are executed by the processor, the method as provided in the first aspect is performed.
In a fourth aspect, embodiments of the present application provide a readable storage medium, on which a computer program is stored, where the computer program runs the method provided in the first aspect as described above when being executed by a processor.
Additional features and advantages of the present application will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by the practice of the embodiments of the present application. The objectives and other advantages of the application may be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments of the present application will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and that those skilled in the art can also obtain other related drawings based on the drawings without inventive efforts.
Fig. 1 is a block diagram of a recorder according to an embodiment of the present disclosure;
fig. 2 is a flowchart of a data storage method according to an embodiment of the present application;
fig. 3 is a flowchart of a data storage device according to an embodiment of the present application.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present application, presented in the accompanying drawings, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present application without making any creative effort, shall fall within the protection scope of the present application.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures. Meanwhile, in the description of the present application, the terms "first", "second", and the like are used only for distinguishing the description, and are not to be construed as indicating or implying relative importance.
The black box in the driving process of the unmanned vehicle needs to be provided as a safety record in the driving process in the daily operation process so as to ensure that the operation safety of the unmanned vehicle can be relied on. Therefore, the data storage method and the data storage device provided by the application ensure that the latest driving data of the unmanned vehicle can be accurately recorded under the condition that the black box or the recorder receives the physical hardware limitation.
The data storage method provided by the application can be implemented in a recorder shown in fig. 1, where fig. 1 is a schematic structural diagram of the recorder provided by the embodiment of the present invention, and the recorder may include: at least one processor 110, at least one communication interface 120, at least one memory 130, and at least one communication bus 140. Wherein the communication bus 140 is used for realizing direct connection communication of these components. The communication interface 120 of the device in the embodiment of the present application is used for performing signaling or data communication with other node devices. The memory 130 may be a non-volatile memory (non-volatile memory), such as at least one disk memory. Memory 130 may optionally be at least one memory device located remotely from the aforementioned processor. The memory 130 stores computer readable instructions that, when executed by the processor 110, cause the recorder to perform the method process of fig. 2 described below.
Referring to fig. 2, fig. 2 is a flowchart of a data storage method according to an embodiment of the present application, where the method includes the following steps:
step S110: and detecting the size of the residual space stored by the recorder.
Step S120: and when the size of the residual space is smaller than the preset value, the stored old data is covered by the newly obtained data.
The preset value may be set according to a theoretical reserved space of a Parallel Driving Unit (PDU), for example, if the complete storage space of the recorder is 1000M and the theoretical reserved space of the PDU is 5% of the storage space, the preset value is 50M.
Alternatively, when overwriting stored old data with newly acquired data, the following steps may be taken: firstly, searching data with the longest storage time in stored old data; and then, the newly acquired data is used for covering the data with the longest storage time, so that the data with the longest storage time in the storage of the recorder is covered by the newly acquired data, and the data recorded by the recorder can be the latest data.
For example, the data files recorded at two points in the afternoon of 10 month and 1 day in 2019 may be named as "20191001005", where the first six bits are the date of 2019 and 10 month and 1 day in the year, the last three bits are the number, the 5 th file may also be named as "201910011400", where the first six bits are the date of 2019 and 10 month and 1 day in the year, and the last four bits are the two points in the afternoon, that is, 14: 00.
In the implementation process, the storage condition of the recorder is monitored by detecting the size of the residual space stored by the recorder, and if the size of the residual space is too small, newly obtained data cannot be recorded, so that the newly obtained data is used for covering stored old data when the size of the residual space is smaller than a preset value, the newly obtained data can be accurately recorded, and the latest driving data of the unmanned vehicle can be accurately recorded.
In this application embodiment, the record appearance can be installed on unmanned car, and unmanned car can cruise according to the route of setting for, also can remove through the control of remote end, and the data that unmanned car sent begin to receive after the record appearance is started to go up at unmanned car, for example, the control data that whole car control system of unmanned car sent, the video data that the video collection device that sets up on the unmanned car gathered, the audio data that the audio collection device that sets up on the unmanned car gathered etc.. The video acquisition device can be a multi-channel video acquisition device of a single vehicle, for example, a four-channel video acquisition device, a six-channel video acquisition device, an eight-channel video acquisition device and the like, and different video acquisition devices can be selected according to the size and the actual requirement of the vehicle.
The recorder stores data after the unmanned vehicle is started and powered on, the data are directly stored by default, when the situation that the size of the residual space stored by the recorder is smaller than a preset value is detected, the recorder is switched to an overlay storage mode, and the stored old data are overlaid by newly obtained data. In order to ensure that the recorder can store as much data as possible, a format of the stored video data or audio data may be set, for example, the video data is acquired and stored in a lossless encoding mode with a video resolution meeting 720P, the video format may be MP4 format or FLV/F4V format, and in addition, for convenience of loading and copying of the video data, a storage file of the video may be set to be not more than 5 minutes or not more than 100MB, and specific settings may be set according to actual conditions.
As a fact, the unmanned vehicle can be remotely driven through the control of the remote end, so that the data recorded by the recorder can be sent to the remote end for storage, the storage request sent by the remote end is received, and the currently received data is sent to the storage space of the remote end. For example, the remote end can send a remote driving plug flow request, the recorder receives the remote driving plug flow request and then sends the currently received data to the storage space of the remote end, and in another example, the remote end can also send a cloud storage request, the recorder receives the cloud storage request and then sends the currently received data to a specified cloud end in the cloud storage request, and the data recorded in the cloud end can be downloaded by an operator to be viewed or directly logged in a cloud end account to be viewed. The data storage device comprises a recorder, a video data storage module, a data storage module and a data processing module, wherein in order to ensure the data volume stored in the cloud, a video format or an audio data format can be set, so that the problem that the data cannot be stored in the cloud due to the fact that the uploading speed is low due to network reasons is avoided.
Wherein, after receiving the storage request sent by the remote end, the recorder can store the received data in the recorder storage, meanwhile, the received data is sent to the storage space of the remote end, so that the data can be synchronously stored in the storage space of the recorder and the storage space of the remote end, in addition, the recorder can also send the received data to the storage space of the remote end, meanwhile, the received data is stopped to be stored in the recorder continuously, the storage efficiency is improved, the storage space of the recorder is saved, and after receiving the storage ending request sent by the remote end, stopping sending the received data to the storage space of the remote end, and simultaneously continuing to store the received data into the recorder for storage, or, the storage request sent by the remote end includes the time point when the remote storage is finished or the time period of the remote storage, the remote storage may be ended at the point of time or stopped after the period of the remote storage is ended. In the process, the currently received data are sent to the remote end for storage, so that the remote end can analyze the data stored by the recorder in real time to obtain the running state of the vehicle.
When the recorder records data, the recording is not stopped without any reason, the data recorded by the recorder can be ensured to be the latest data, and only when a specific event occurs, the recorder can stop recording the data, such as a vehicle failure or a manual forced stop. When the vehicle breaks down, the recorder can stop recording data, namely, interrupt coverage, so that the data before and after the event is completely recorded, and different interrupt coverage modes are introduced below.
In the first interrupt override mode, after overwriting the stored old data with the newly acquired data, the following steps may be performed: and detecting whether the vehicle is in a fault state, and if so, stopping overwriting the stored old data with the newly acquired data. Whether the vehicle is in a failure state can be detected through data sent by the vehicle control unit, or through a failure detection device mounted on the vehicle, for example, a tire failure detection device. After the vehicle is detected to be out of order, the newly acquired data can be immediately stopped from covering the stored old data, the data stored in the recorder is guaranteed to be the data when and before the vehicle is out of order, and a worker can conveniently analyze the reason of the vehicle out of order according to the data.
In the second interrupt override mode, after overwriting the stored old data with the newly acquired data, the following steps can be further performed: and detecting whether the vehicle is in a fault state, and if so, stopping covering the stored old data with the newly obtained data after a preset time period. When the vehicle breaks down, the recorder stops storing newly acquired data after a preset time period, data before and after the vehicle breaks down can be accurately recorded, and then workers can analyze the data, and other information such as damage of the vehicle before and after the vehicle breaks down can be analyzed, so that the failure reason can be analyzed, and other information such as the damage degree of the vehicle can be mastered.
In the third interrupt override mode, after overwriting the stored old data with the newly acquired data, the following steps can be further performed: and detecting whether the vehicle is in a fault state, if so, continuously acquiring a preset amount of new data, and covering the stored old data with the new data. When the vehicle breaks down, the recorder continues to acquire the new data of the preset amount, the data of the excessive new data in the period before the vehicle breaks down and in the fault state are prevented from being covered, the data before and after the vehicle breaks down can be accurately recorded, and then workers can analyze the data and analyze the fault reasons.
After the recorder is interrupted from coverage, the coverage storage can be automatically recovered after the vehicle is repaired or after the data in the recorder storage is downloaded, and the coverage storage can be recovered by sending a command for forcibly recovering the coverage storage by an operator.
On the basis of the above embodiment, after the vehicle failure state is detected, whether the vehicle is in a drivable state may be detected, if so, the data before and after the vehicle failure may be set as the non-coverable data, and the stored old data may be continuously covered with the new data, where the covered old data is the coverable data, so that in a case where the vehicle is still capable of driving despite the vehicle failure, it is ensured that the data before and after the vehicle failure is recorded, and it is also ensured that the data is not covered by the newly obtained data, so that the vehicle failure may be analyzed after the vehicle finishes the driving task.
It can be understood that after the vehicle is detected to have a fault state, whether the vehicle is in a drivable state can be detected, if so, the newly acquired data can be stopped from covering the stored old data, the cloud storage is requested, and the newly acquired data after the fault is sent to the cloud for storage, so that the data before and after the vehicle has the fault can be recorded, and the new data after the fault can be stored in the cloud, so that the fault can be analyzed after the vehicle finishes a driving task.
The operation personnel can realize the storage and reading of the recorder through data transmission lines, WiFi direct connection and other modes, for example, the data in the storage of the recorder can be viewed through a visual export tool, a third-party program or software of the visual export tool, or display equipment. The operator can also log in the cloud end to check or download data stored in the cloud end.
Based on the same inventive concept, the embodiment of the present application also provides a data storage device 200 shown in fig. 3. The means may be a module, program segment or code on the recorder. It should be understood that the data storage device 200 corresponds to the above-mentioned embodiment of the method of fig. 2, and can perform the steps related to the embodiment of the method of fig. 2, and the specific functions of the data storage device 200 can be referred to the above description, and the detailed description is appropriately omitted here to avoid redundancy.
Optionally, the data storage device 200 comprises:
a remaining space detection module 210, configured to detect a size of a remaining space stored in the recorder;
and the covering module 220 is configured to cover the stored old data with the newly obtained data when the size of the remaining space is smaller than the preset value.
Optionally, the covering module 220 comprises:
and the searching unit is used for searching the data with the longest storage time in the stored old data.
And the covering unit is used for covering the data with the longest storage time by using the newly obtained data.
Optionally, the apparatus further comprises:
and the first fault detection module is used for detecting whether the vehicle is in a fault state, and if so, stopping covering the stored old data with the newly obtained data.
Optionally, the apparatus further comprises:
and the second fault detection module is used for detecting whether the vehicle is in a fault state, and if so, stopping covering the stored old data with the newly obtained data after a preset time period.
Optionally, the apparatus further comprises:
and the third fault detection module is used for detecting whether the vehicle is in a fault state, if so, continuously acquiring a preset amount of new data, and covering the stored old data with the new data.
Optionally, the apparatus further comprises:
and the remote module is used for receiving the storage request sent by the remote end and sending the currently received data to the storage space of the remote end.
The present application provides a readable storage medium, and when being executed by a processor, a computer program performs the method processes performed by the recorder in the method embodiment shown in fig. 2.
It is clear to those skilled in the art that, for convenience and brevity of description, the specific working process of the apparatus described above may refer to the corresponding process in the foregoing method, and will not be described in too much detail herein.
In summary, the present application provides a data storage method and apparatus, the method includes: detecting the size of the residual space stored by the recorder; when the size of the residual space is smaller than the preset value, the stored old data is covered by the newly obtained data, the storage condition of the recorder is monitored by detecting the size of the residual space stored by the recorder, and if the size of the residual space is too small, the newly obtained data cannot be recorded.
In the embodiments provided in the present application, it should be understood that the disclosed apparatus and method may be implemented in other ways. The above-described embodiments of the apparatus are merely illustrative, and for example, the division of the units is only one logical division, and there may be other divisions when actually implemented, and for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection of devices or units through some communication interfaces, and may be in an electrical, mechanical or other form.
In addition, units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
Furthermore, the functional modules in the embodiments of the present application may be integrated together to form an independent part, or each module may exist separately, or two or more modules may be integrated to form an independent part.
In this document, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions.
The above description is only an example of the present application and is not intended to limit the scope of the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims (10)
1. A method of data storage, the method comprising:
detecting the size of the residual space stored by the recorder;
and when the size of the residual space is smaller than a preset value, the stored old data is covered by the newly obtained data.
2. The method of claim 1, wherein overwriting stored old data with newly obtained data comprises:
searching the data with the longest storage time in the stored old data;
and overwriting the data with the longest storage time by using the newly obtained data.
3. The method of claim 1, wherein after overwriting stored old data with newly obtained data, the method further comprises:
and detecting whether the vehicle is in a fault state, and if so, stopping overwriting the stored old data with the newly acquired data.
4. The method of claim 1, wherein after overwriting stored old data with newly obtained data, the method further comprises:
and detecting whether the vehicle is in a fault state, and if so, stopping covering the stored old data with the newly obtained data after a preset time period.
5. The method of claim 1, wherein after overwriting stored old data with newly obtained data, the method further comprises:
and detecting whether the vehicle is in a fault state, if so, continuously acquiring a preset amount of new data, and covering the stored old data with the new data.
6. The method of claim 1, further comprising:
and receiving a storage request sent by the remote end, and sending the currently received data to the storage space of the remote end.
7. A data storage device, characterized in that the device comprises:
the residual space detection module is used for detecting the size of the residual space stored by the recorder;
and the covering module is used for covering the stored old data with the newly obtained data when the size of the residual space is smaller than a preset value.
8. The apparatus of claim 7, wherein the overlay module comprises:
the searching unit is used for searching the data with the longest storage time in the stored old data;
and the covering unit is used for covering the data with the longest storage time by using the newly obtained data.
9. A recorder comprising a processor and a memory, said memory storing computer readable instructions which, when executed by said processor, carry out the method of any one of claims 1 to 6.
10. A readable storage medium, on which a computer program is stored, which, when being executed by a processor, carries out the method according to any one of claims 1 to 6.
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| CN112622931A (en) * | 2020-12-22 | 2021-04-09 | 北京百度网讯科技有限公司 | Abnormity processing method in parallel driving, automatic driving vehicle and cloud driving cabin |
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| CN112622931A (en) * | 2020-12-22 | 2021-04-09 | 北京百度网讯科技有限公司 | Abnormity processing method in parallel driving, automatic driving vehicle and cloud driving cabin |
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