CN112688759B - Data receiving and processing method and device - Google Patents
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- CN112688759B CN112688759B CN201910995738.9A CN201910995738A CN112688759B CN 112688759 B CN112688759 B CN 112688759B CN 201910995738 A CN201910995738 A CN 201910995738A CN 112688759 B CN112688759 B CN 112688759B
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- H04L1/00—Arrangements for detecting or preventing errors in the information received
Abstract
The invention relates to the technical field of data communication, in particular provides a data receiving and processing method and a data receiving and processing device, and aims to solve the technical problem of how to improve the reliability of data communication. To this end, a data receiving and processing method provided in an embodiment of the present invention obtains data of specific data bits in a received current data frame and a received target data frame, and compares whether the data of the specific data bits are consistent: if the data frames are consistent, analyzing the current data frame; if the data frames are inconsistent, the last analyzed data frame is continuously analyzed, and the data frame analyzed each time can be ensured to be the correct data frame, so that misoperation caused by analyzing wrong data is avoided, and the reliability of data communication is obviously improved. The data receiving and processing device provided by the embodiment of the invention can execute the data receiving and processing method, and can also obviously improve the reliability of data communication.
Description
Technical Field
The invention relates to the technical field of data communication, in particular to a data receiving and processing method and device.
Background
Data communication mainly refers to data transmission between different data terminal devices through data communication devices and communication channels, wherein data is generally transmitted in the form of data frames (each byte is formed by packaging bytes, and each byte is composed of multiple bits of data). When data communication is performed in a strong interference environment (such as high noise, high electromagnetic interference, etc.), a data frame transmitted in a communication channel may be bit-inverted due to interference (for example, data of one or more data bits is inverted from "0" to "1"), and if a data terminal device on a receiving side cannot timely screen the accuracy of the data, reliability of the data communication will be greatly affected. For this reason, it is currently mainly to check whether an abnormality occurs in the data frame by adding a Checksum byte (Checksum) at the end of the data frame (for example, to determine whether the data accumulation sum of data bits in the data frame is consistent at the data transmitting and receiving sides). However, there still exists a certain false detection probability in this way, for example, when two data bits in a data frame are bit-inverted and the original data of the two data bits are respectively 0 and 1, the data bit accumulation sum of the data frame does not change, i.e. the false data still cannot be accurately detected by comparing the checksum.
Accordingly, there is a need in the art for a new data processing solution that addresses the above-mentioned problems.
Disclosure of Invention
The technical problem of how to improve the reliability of data communication is solved. To this end, embodiments of the present invention provide a data receiving processing method and apparatus, where the data receiving processing method and apparatus determine accuracy of a current data frame by acquiring data of specific data bits in the current data frame and a target data frame and comparing whether the data of the specific data are consistent, so as to significantly improve reliability of data communication.
In a first aspect, an embodiment of the present invention provides a data receiving and processing method, where the method includes the following steps:
respectively acquiring data of specific data bits in a received current data frame and a received target data frame;
comparing whether the data of the specific data bit is consistent: if the current data frame is consistent with the current data frame, analyzing the current data frame; if not, continuing to analyze the last analyzed data frame;
the target data frame is a data frame adjacent to the current data frame in the received data frames, and the specific data bit is a data bit of which the data adjustment frequency is less than or equal to a preset adjustment frequency in the data frames.
Further, an optional technical solution of the embodiment of the present invention is:
before the step of "acquiring data of specific data bits in the received current data frame and target data frame respectively", the method further comprises:
judging whether the calculated checksum of the current data frame is consistent with the currently received actual checksum or not,
and if the data bits are consistent with the data bits in the target data frame, executing the step of respectively acquiring the data of the specific data bits in the received current data frame and the received target data frame.
Further, an optional technical solution of the embodiment of the present invention is:
before the step of determining whether the calculated checksum of the current data frame is consistent with the currently received actual checksum, the method further includes:
calculating a calculation checksum of the current data frame by using a preset checksum algorithm and according to data of data bits in the current data frame;
and the preset checksum algorithm is the same as the checksum algorithm used by the actual checksum.
Further, an optional technical solution of the embodiment of the present invention is:
the number of the target data frames is one or more.
Further, an optional technical solution of the embodiment of the present invention is:
the number of the specific data bits is plural.
In a second aspect, an embodiment of the present invention provides a data receiving and processing apparatus, including the following structures:
a data acquisition module configured to acquire data of a specific data bit in the received current data frame and the target data frame, respectively;
a data parsing module configured to compare whether the data of the particular data bit is consistent: if the current data frame is consistent with the current data frame, analyzing the current data frame; if not, continuing to analyze the last analyzed data frame;
the target data frame is a data frame adjacent to the current data frame in the received data frames, and the specific data bit is a data bit of which the data adjustment frequency is less than or equal to a preset adjustment frequency in the data frames.
Further, an optional technical solution of the embodiment of the present invention is:
the device further comprises:
a data check module configured to determine whether the calculated checksum of the current data frame is consistent with a currently received actual checksum: and if the data is consistent with the data, starting the data acquisition module and the data analysis module.
Further, an optional technical solution of the embodiment of the present invention is:
the data checking module is further configured to calculate a calculated checksum of the current data frame according to data of data bits in the current data frame by using a preset checksum algorithm;
and the preset checksum algorithm is the same as the checksum algorithm used by the actual checksum.
Further, an optional technical solution of the embodiment of the present invention is:
the number of the target data frames is one or more.
Further, an optional technical solution of the embodiment of the present invention is:
the number of the specific data bits is plural.
The technical scheme has at least the following beneficial effects, which can be understood by the technical personnel in the field:
respectively acquiring the data of specific data bits in the received current data frame and the target data frame, and comparing whether the data of the specific data bits are consistent: if the data frames are consistent, analyzing the current data frame; if the data frames are inconsistent, the last analyzed data frame is continuously analyzed, and the problem that the communication reliability is poor because bit reversal of the data frame caused by factors such as environmental interference cannot be detected currently is solved.
Drawings
Fig. 1 is a schematic diagram of main steps of a data reception processing method according to an embodiment of the present invention;
fig. 2 is a schematic main configuration diagram of a data reception processing apparatus according to an embodiment of the present invention;
list of reference numerals:
11-a data acquisition module; 12-data analysis module.
Detailed Description
Preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only for explaining the technical principle of the present invention, and are not intended to limit the scope of the present invention.
A data receiving processing method according to an embodiment of the present invention is described below with reference to the accompanying drawings. Referring to fig. 1, fig. 1 schematically illustrates main steps of a data reception processing method according to an embodiment of the present invention. As shown in fig. 1, the data receiving and processing method in the embodiment of the present invention mainly includes the following steps:
step S101: and respectively acquiring the data of the specific data bits in the received current data frame and the target data frame.
In this embodiment, when the data terminal device on the data transmitting side (simply referred to as the transmitting side device in this embodiment for brevity of description) transmits communication data to the data terminal device on the data receiving side (simply referred to as the receiving side device in this embodiment for brevity of description), the communication data is transmitted frame by frame in units of data frames, and the receiving side device also receives the communication data frame by frame. The current data frame in this embodiment refers to a data frame received by the receiving-side device at the current time, the target data frame refers to a data frame adjacent to the current data frame in all data frames already received by the receiving-side device, and the adjacent data frame may be understood as one or several data frames newly received by the receiving-side device before receiving the current data frame.
The specific data bit in this embodiment refers to a data bit in the data frame whose data adjustment frequency is less than or equal to the predetermined adjustment frequency. For example, in this embodiment, the specific data bit may be a data bit in which data indicating the sending-side device identity information (the device identity information should be kept unchanged for a long time), or may be a data bit in which other data having an adjustment frequency less than or equal to a preset adjustment frequency is located, such as instruction information indicating the sending-side device (for example, an instruction for controlling the receiving-side device to execute a certain action, an instruction for controlling the receiving-side device to report certain information to the sending-side device, and the like). Optionally, in this embodiment, the specific data bits may be multiple, for example, the specific data bits may be 8-bit data bits of a certain byte in the data frame, or may be a combination of different data bits in different bytes.
Step S102: and comparing whether the data of the specific data bit in the current data frame and the target data frame are consistent. Specifically, in this embodiment, if the data of the specific data bits in the current data frame and the target data frame are consistent (for example, the data of the specific data bits are all 1), go to step S103; if the data of the specific data bit in the current data frame is inconsistent with the data of the specific data bit in the target data frame (for example, the data of the specific data bit in the current data frame is 1, and the data of the specific data bit in the target data frame is 0), go to step S104;
step S103: the current data frame is parsed.
In this embodiment, if the data of the specific data bit in the current data frame is consistent with the data of the specific data bit in the target data frame, it indicates that the data in the current data frame is not bit-reversed due to environmental interference or other reasons, that is, the current data frame is a correct data frame, and the current data frame can be directly analyzed.
Step S104: and continuing to parse the last parsed data frame.
In this embodiment, if the data of the specific data bit in the current data frame and the data of the target data frame are not consistent, it indicates that the data in the current data frame may be the command information of the transmitting-side device, and the like has changed, and may also have bit inversion due to environmental interference or other reasons. In summary, in order to avoid the occurrence of the misoperation due to the analysis of the error data, it is necessary to continue to analyze the previous analyzed data frame, that is, to analyze the previous correct data frame, in the case of "the data of the specific data bit in the current data frame is not consistent with the data of the specific data bit in the target data frame".
The data receiving and processing method shown in fig. 1 will be further described with reference to a specific embodiment in the following examples.
The specific data bit of each data frame in the communication data transmitted from the transmitting-side device to the receiving-side device in the present embodiment is the 1 st byte in the data frame, that is, byte 1; the target data frame is a data frame that is previous to a data frame currently received by the receiving-side device, that is, the target data frame is a 1 st data frame adjacent to the current data frame in the data frames that have been received by the receiving-side device.
1. The receiving side equipment currently receives the mth data frame TXmI.e. the target data frame is the data frame TXmLast data frame TX ofm-1(ii) a Determining data frame TX by data comparisonmAnd data frame TXm-1If the data of the middle byte 1 is consistent, the data frame TX is directly analyzedm；
2. The receiving side equipment currently receives the (m + 1) th data frame TXm+1I.e. the target data frame is the data frame TXmDetermining the data frame TX by data comparisonm+1And data frame TXmIf the data of the middle byte 1 is not consistent, the data frame TX is continuously analyzedm；
3. The receiving side equipment currently receives the (m + 2) th data frame TXm+2I.e. the target data frame is the data frame TXm+1(ii) a Determining data frame TX by data comparisonm+2And data frame TXm+1If the data of the middle byte 1 is not consistent, the data frame TX is continuously analyzedm；
4. The receiving side equipment currently receives the (m + 3) th data frame TXm+3I.e. the target data frame is the data frame TXm+2(ii) a Determining data frame TX by data comparisonm+3And dataFrame TXm+2If the data of the middle byte 1 is consistent, the data frame TX is directly analyzedm+3。
The data receiving processing method shown in fig. 1 is further described below with reference to another specific embodiment in the examples of the present invention.
The specific data bit of each data frame in the communication data transmitted from the transmitting-side device to the receiving-side device in the present embodiment is the 1 st byte in the data frame, that is, byte 1; the target data frame is two data frames received latest before the data frame currently received by the receiving-side device, that is, the target data frame is the 1 st to 2 nd data frames adjacent to the current data frame among the data frames already received by the receiving-side device.
1. The receiving side equipment currently receives the mth data frame TXmI.e. the target data frame is the data frame TXmAdjacent data frames TXm-1And a data frame TXm-2(ii) a Determining data frame TX by data comparisonmData frame TXm-1And a data frame TXm-2If the data of the middle byte 1 are consistent, the data frame TX is directly analyzedm；
2. The receiving side equipment currently receives the (m + 1) th data frame TXm+1I.e. the target data frame is the data frame TXm+1Adjacent data frames TXmAnd a data frame TXm-1(ii) a Determining data frame TX by data comparisonm+1And data frame TXmAnd a data frame TXm-1If the data of the middle byte 1 are not consistent, the data frame TX is continuously analyzedm；
3. The receiving side equipment currently receives the (m + 2) th data frame TXm+2I.e. the target data frame is the data frame TXm+2Adjacent data frames TXm+1And a data frame TXm(ii) a Determining data frame TX by data comparisonm+2And data frame TXm+1Byte 1 coherent, and data frame TXmIf the data of the middle byte 1 is not consistent, the data frame TX is continuously analyzedm；
4. The receiving side equipment currently receives the (m + 3) th data frame TXm+3I.e. the target data frame is the data frame TXm+3Adjacent numberData frame TXm+2And a data frame TXm+1(ii) a Determining data frame TX by data comparisonm+3Data frame TXm+2And a data frame TXm+1If the data of the middle byte 1 are consistent, the data frame TX is directly analyzedm+3。
In the embodiment of the invention, the accuracy of the current data frame is judged by acquiring the data of the specific data bits in the current data frame and the target data frame and comparing whether the data of the specific data are consistent, so that the communication reliability between the equipment at the transmitting side and the equipment at the receiving side is obviously improved.
Further, in an optional embodiment of the present invention, the data receiving process may further be performed according to the following steps:
step S201: and judging whether the calculated checksum of the current data frame is consistent with the currently received actual checksum or not. Specifically, in this embodiment, if the calculated checksum of the current data frame is consistent with the actual checksum, go to step S202; and if the calculated checksum of the current data frame is inconsistent with the actual checksum, judging that the current data frame is an error data frame.
In this embodiment, the calculated checksum of the current data frame refers to a checksum of the current data frame calculated by using a preset checksum algorithm according to data of data bits in the current data frame, and the actual checksum refers to a currently and actually received checksum. Meanwhile, the preset checksum algorithm should be the same as the checksum algorithm used for the actual checksum in this embodiment. Optionally, the checksum algorithm used by the actual checksum may be an accumulation sum algorithm or a crc (cyclic Redundancy check) check algorithm, etc.
Step S202: and respectively acquiring the data of the specific data bits in the received current data frame and the target data frame.
Step S203: the data of a particular data bit in the current data frame and the target data frame are compared. Specifically, in this embodiment, if the data of the specific data bits in the current data frame and the target data frame are consistent, go to step S204; if the data of the specific data bits in the current data frame and the target data frame are not consistent, go to step S205.
Step S204: the current data frame is parsed.
Step S205: and continuing to parse the last parsed data frame.
It should be noted that specific implementations of step S202, step S203, step S204, and step S205 in this embodiment are the same as the specific implementations of step S101, step S102, step S103, and step S104 in the foregoing embodiment, respectively, and for brevity of description, detailed descriptions thereof are omitted here.
In the embodiment of the invention, the accuracy of the current data frame is judged by comparing whether the calculated checksum of the current data frame is consistent with the actual checksum received currently, and then the accuracy of the current data frame is judged by acquiring the data of the specific data bit in the current data frame and the target data frame and comparing whether the data of the specific data is consistent, so that the communication reliability between the sending side equipment and the receiving side equipment can be further improved.
Although the foregoing embodiments describe the steps in the above sequential order, those skilled in the art will understand that, in order to achieve the effect of the present embodiments, the steps may not be executed in such an order, and may be executed simultaneously (in parallel) or in an inverse order, and these simple variations are within the scope of the present invention.
Based on the data receiving and processing method described in the above method embodiment, an embodiment of the present invention further provides a data receiving and processing device, and the following describes the data receiving and processing device in the embodiment of the present invention with reference to the drawings.
Referring to fig. 2, fig. 2 schematically shows the main structure of a data reception processing apparatus according to an embodiment of the present invention. As shown in fig. 2, the data receiving and processing apparatus in the embodiment of the present invention mainly includes a data obtaining module 11 and a data analyzing module 12. Specifically, the data obtaining module 11 may be configured to obtain data of specific data bits in the received current data frame and the target data frame respectively; the data parsing module 12 may be configured to compare whether the data of the particular data bit is consistent: if the data frames are consistent, analyzing the current data frame; if not, continuing to analyze the last analyzed data frame; the target data frame is a data frame adjacent to the current data frame in the received data frames, and the specific data bits are data bits of which the data adjustment frequency in the data frames is less than or equal to a preset adjustment frequency. Optionally, the number of target data frames in the embodiment of the present invention may be one or more, and the number of specific data bits may be more.
Further, in an optional implementation manner of the embodiment of the present invention, the data receiving processing apparatus shown in fig. 2 may further include a data checking module, where the data checking module may be configured to determine whether the calculated checksum of the current data frame is consistent with the currently received actual checksum: if the calculated checksum of the current data frame is consistent with the actual checksum, the data obtaining module 11 and the data analyzing module 12 are started, that is, after the calculated checksum of the current data frame is determined to be consistent with the actual checksum, the data obtaining module 11 and the data analyzing module 12 are started again, so that the two modules respectively execute respective operations.
Optionally, in this embodiment, the data checking module may be further configured to calculate a calculated checksum of the current data frame according to the data of the data bits in the current data frame by using a preset checksum algorithm; the preset checksum algorithm is the same as the checksum algorithm used by the actual checksum.
It should be noted that, in the embodiment of the data receiving and processing apparatus, for executing the embodiment of the data receiving and processing method, technical principles, solved technical problems, and generated technical effects are similar, and it can be clearly understood by those skilled in the art that, for convenience and simplicity of description, specific working processes and related descriptions of the embodiment of the data receiving and processing apparatus may refer to corresponding processes in the embodiment of the data receiving and processing method, and are not described herein again.
Those skilled in the art will appreciate that the above-described data receiving and processing device also includes some other known structures, such as a processor, a controller, a memory, etc., wherein the memory includes, but is not limited to, a random access memory, a flash memory, a read only memory, a programmable read only memory, a volatile memory, a non-volatile memory, a serial memory, a parallel memory or a register, etc., and the processor includes, but is not limited to, a CPLD/FPGA, a DSP, an ARM processor, a MIPS processor, etc., and these known structures are not shown in fig. 2 in order to unnecessarily obscure the embodiments of the present disclosure.
It should be understood that the number of individual modules in fig. 2 is merely illustrative. The number of modules may be any according to actual needs.
The present invention may also be embodied as an apparatus or device program (e.g., PC program and PC program product) for carrying out a portion or all of the methods described herein. Such a program implementing the invention may be stored on a PC readable medium or may be in the form of one or more signals. Such a signal may be downloaded from an internet website or provided on a carrier signal or in any other form.
It should be noted that the above-mentioned embodiments illustrate rather than limit the invention, and that those skilled in the art will be able to design alternative embodiments without departing from the scope of the appended claims. In the claims, the word "comprising" does not exclude the presence of elements or steps not listed in a claim. The invention may be implemented by means of hardware comprising several distinct elements, and by means of a suitably programmed PC.
So far, the technical solutions of the present invention have been described in connection with the preferred embodiments shown in the drawings, but it is easily understood by those skilled in the art that the scope of the present invention is obviously not limited to these specific embodiments. Equivalent changes or substitutions of related technical features can be made by those skilled in the art without departing from the principle of the invention, and the technical scheme after the changes or substitutions can fall into the protection scope of the invention.
Claims (10)
1. A data receiving and processing method, the method comprising:
respectively acquiring data of specific data bits in a received current data frame and a received target data frame;
comparing whether the data of the specific data bit is consistent: if the data frames are consistent, analyzing the current data frame, and if the data frames are inconsistent, continuously analyzing the last analyzed data frame so as to ensure that each analyzed data frame is a correct data frame;
the target data frame is a data frame adjacent to the current data frame in the received data frames, and the specific data bit is a data bit of which the data adjustment frequency is less than or equal to a preset adjustment frequency in the data frames.
2. The data reception processing method according to claim 1, wherein, before the step of "acquiring data of specific data bits in the received current data frame and target data frame respectively", the method further comprises:
and judging whether the calculated checksum of the current data frame is consistent with the currently received actual checksum or not, and if so, executing the step of respectively acquiring the data of the specific data bits in the received current data frame and the target data frame.
3. The data receiving and processing method according to claim 2, wherein before the step of determining whether the calculated checksum of the current data frame is consistent with the currently received actual checksum, the method further comprises:
calculating a calculation checksum of the current data frame by using a preset checksum algorithm and according to data of data bits in the current data frame;
and the preset checksum algorithm is the same as the checksum algorithm used by the actual checksum.
4. The data reception processing method according to any one of claims 1 to 3, wherein the number of the target data frames is one or more.
5. The data reception processing method according to any one of claims 1 to 3, wherein the number of the specific data bits is plural.
6. A data reception processing apparatus, characterized in that the apparatus comprises:
a data acquisition module configured to acquire data of a specific data bit in the received current data frame and the target data frame, respectively;
a data parsing module configured to compare whether the data of the particular data bit is consistent: if the data frames are consistent, analyzing the current data frame, and if the data frames are inconsistent, continuously analyzing the last analyzed data frame so as to ensure that each analyzed data frame is a correct data frame;
the target data frame is a data frame adjacent to the current data frame in the received data frames, and the specific data bit is a data bit of which the data adjustment frequency is less than or equal to a preset adjustment frequency in the data frames.
7. The data reception processing apparatus according to claim 6, wherein the apparatus further comprises:
a data check module configured to determine whether the calculated checksum of the current data frame is consistent with a currently received actual checksum: and if the data is consistent with the data, starting the data acquisition module and the data analysis module.
8. The data reception processing apparatus according to claim 7,
the data checking module is further configured to calculate a calculated checksum of the current data frame according to data of data bits in the current data frame by using a preset checksum algorithm;
and the preset checksum algorithm is the same as the checksum algorithm used by the actual checksum.
9. The data reception processing apparatus according to any one of claims 6 to 8, wherein the number of target data frames is one or more.
10. The data reception processing apparatus according to any one of claims 6 to 8, wherein the number of the specific data bits is plural.
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| CN1964250A (en) * | 2006-11-23 | 2007-05-16 | 华为技术有限公司 | Data frame type identification method and device |
| CN103018726A (en) * | 2012-12-10 | 2013-04-03 | 中国科学院对地观测与数字地球科学中心 | Method and device for processing remote sensing satellite signal |
| CN104991833A (en) * | 2015-06-15 | 2015-10-21 | 联想(北京)有限公司 | Method and electronic equipment for error detection |
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| US7770065B2 (en) * | 2008-02-06 | 2010-08-03 | Inventec Corporation | File data restoring system and method of computer operating system and software thereof |
| CN102299767B (en) * | 2011-08-31 | 2013-10-30 | 深圳市元征软件开发有限公司 | Wireless communication quality monitoring method for tire pressure monitoring system (TPMS) |
| CN105281883B (en) * | 2014-06-30 | 2019-07-09 | 深圳市中兴微电子技术有限公司 | Multi-channel synchronization method, synchronizing device and system |
| CN104378549A (en) * | 2014-10-30 | 2015-02-25 | 东莞宇龙通信科技有限公司 | Snapshot method and device and terminal |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1964250A (en) * | 2006-11-23 | 2007-05-16 | 华为技术有限公司 | Data frame type identification method and device |
| CN103018726A (en) * | 2012-12-10 | 2013-04-03 | 中国科学院对地观测与数字地球科学中心 | Method and device for processing remote sensing satellite signal |
| CN104991833A (en) * | 2015-06-15 | 2015-10-21 | 联想(北京)有限公司 | Method and electronic equipment for error detection |
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