Method for identifying and extracting effective data of end section of transient wireless transmission based on multi-layer check

Abstract

This invention belongs to the field of explosive impact and hypersonic impact technology, and discloses a method for extracting valid data at the end of transient wireless transmission based on multi-layer verification identification. The method involves pre-performing multi-layer verification on the transmitted data, integrating the original data and verification data before transmission, then using the same verification rules to decode the received wireless transmission data at the end of the transmission, and finally identifying and extracting valid data based on the decoding results. This method is particularly suitable for applications requiring wireless data transmission in fields such as explosive impact and hypersonic impact, where the transmission of valid data is brief and subject to strong interference leading to high bit error rates, and has practical engineering value.

Description

Technical Field

[0001] This invention belongs to the field of explosion impact and ultra-high speed impact technology, specifically relating to a method for extracting effective data at the end of transient wireless transmission based on multi-layer verification and identification. Background Technology

[0002] In highly dynamic events such as explosions and hypersonic impacts, wireless transmission is a common and important method for acquiring relevant measurement parameters. However, since the duration of highly dynamic events is generally on the order of milliseconds or even microseconds, there are several problems when measuring key parameters and transmitting measurement data wirelessly. These problems include short effective data measurement and transmission times, high data error rates due to strong optical and electromagnetic interference during transmission, and valid data being located at the end of the interruption process after transmission interruption. In addition, conventional wireless transmission methods can also result in a small amount of transient valid data being distributed among a large amount of irrelevant or even garbled data, making it impossible to effectively identify and extract.

[0003] Currently, there is an urgent need to develop a method for extracting effective data from the end of transient wireless transmission based on multi-layer verification and identification. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a method for extracting effective data at the end of transient wireless transmission based on multi-layer verification and identification, so as to overcome the defects of the prior art.

[0005] The method for extracting valid data in the terminal segment of transient wireless transmission based on multi-layer verification and identification of the present invention includes the following steps: S10. Perform multi-level validation on the original data; Based on the length of the original data N First, divide the original data into a minimum square matrix permutation containing all the original data. When the integers are both integers, the number of rows and columns of the square matrix are both integers. ,when When the integers are not integers, the number of rows and columns of the matrix are both 1. +1; the check method is either odd check or even check; The row data and column data of the original data are validated sequentially to obtain row validation data and column validation data, thus completing the first layer of validation. The row check data is checked again to obtain the row check bit, and the column check data is checked again to obtain the column check bit, thus completing the second layer of check. The row and column check bits are checked to complete the third layer of verification. All original data are validated again to obtain 1-bit check data; all check data obtained from the first, second, and third layers of validation are validated again to obtain 1-bit check data; the row and column data of the original data, the check data from the first, second, and third layers of validation, and the aforementioned two 1-bit check data are validated again to complete the fourth layer of validation. S20. Integrate raw data and verification data for wireless transmission; The raw data and all checksum data to be transmitted are integrated byte by byte. During the integration process, if the number of bits in the integrated data divided by 8 is not an integer and there is a remainder, then a fixed number of bits is added to fill the remainder, provided the data transmission rate allows. If the data transmission rate is limited or data transmission efficiency needs to be improved, the remainder is eliminated by removing checksum data layer by layer until the number of bits in the integrated data is a multiple of 8. S30. Perform multi-layer parsing on wireless transmission data; The received wireless transmission data is parsed layer by layer to identify valid data; First, parse the fourth layer of check data and determine whether the parsed check data matches the last check data. Then, parse the check data generated by the first, second, and third layers of check data and determine whether the parsed check data matches the second-to-last check data. Finally, parse the check data of the original data and determine whether the parsed check data matches the third-to-last check data. Secondly, the third layer of check data is parsed to determine whether the parsed second layer of check data matches the fourth-to-last check data. Next, parse the second layer of validation data and determine whether the column validation data generated from the parsed first layer of validation matches the fifth-to-last validation data and whether the row validation data matches the sixth-to-last validation data. Finally, the first-level validation data is parsed to determine whether the validation data generated in the row and column directions of the original data conforms to the corresponding row and column validation data in sequence.

[0006] Furthermore, the method of removing verification data layer by layer is to reduce the verification data in the order of removing the fourth layer verification, the third layer verification, and the second layer verification.

[0007] The method for extracting valid data at the end of transient wireless transmission based on multi-layer verification identification of the present invention pre-performs multi-layer verification on the transmitted data, then integrates the original data and verification data before transmission, and then uses the same verification rules to solve the received wireless transmission end-segment data. Finally, the valid data is identified and extracted based on the solution results. This method is particularly suitable for applications such as explosion impacts and hypersonic collisions where wireless data transmission is required, and where the valid data transmission process is brief and subject to strong interference resulting in high bit error rates. It has practical engineering value. Attached Figure Description

[0008] Figure 1 This is a flowchart of the method for extracting valid data in the terminal segment of transient wireless transmission based on multi-layer verification and identification according to the present invention; Figure 2 This is a schematic diagram of a multi-layer verification process; Figure 3 This is a schematic diagram of the layer-by-layer analysis process. Detailed Implementation

[0009] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0010] Example: Figure 1 As shown in the figure, the method for extracting valid data in the terminal segment of transient wireless transmission based on multi-layer verification identification in this embodiment includes the following steps: S10. Perform multi-level validation on the original data; Based on the length of the original data N First, divide the original data into a minimum square matrix permutation containing all the original data. When the integers are both integers, the number of rows and columns of the square matrix are both integers. ,when When the integers are not integers, the number of rows and columns of the matrix are both 1. +1; the check method is either odd check or even check; The row data and column data of the original data are validated sequentially to obtain row validation data and column validation data, thus completing the first layer of validation. The row check data is checked again to obtain the row check bit, and the column check data is checked again to obtain the column check bit, thus completing the second layer of check. The row and column check bits are checked to complete the third layer of verification. All original data are validated again to obtain 1-bit check data; all check data obtained from the first, second, and third layers of validation are validated again to obtain 1-bit check data; the row and column data of the original data, the check data from the first, second, and third layers of validation, and the aforementioned two 1-bit check data are validated again to complete the fourth layer of validation.

[0011] like Figure 2 As shown, the original data in this embodiment is 80 bits long. The original data is arranged in a square matrix with 9 rows and 9 columns. The first layer of verification checks each row of 9 bits once, resulting in 1 row check bit per row, for a total of 9 row check bits. Each column of data (the first eight columns each have 9 bits, and the last column has 8 bits) is also checked once, resulting in 1 column check bit per column, for a total of 9 column check bits. The second layer of verification checks both the 9 row check bits and the 9 column check bits once, resulting in 1 row check bit and 1 column check bit, for a total of 2 check bits. The third layer of verification checks the 2 check bits from the second layer again, resulting in 1 check bit. The fourth layer of verification includes checking the 80 original data again to obtain 1 check bit, checking the 21 check bits generated from the first, second, and third layers of verification again to obtain 1 check bit, and checking the 80 original data and the aforementioned 23 check bits again to obtain 1 check bit, for a total of 24 check bits. S20. Integrate raw data and verification data for wireless transmission; The raw data and all checksum data to be transmitted are integrated byte by byte. During the integration process, if the number of bits in the integrated data divided by 8 is not an integer and there is a remainder, then a fixed number of bits is added to fill the remainder, provided the data transmission rate allows. If the data transmission rate is limited or data transmission efficiency needs to be improved, the remainder is eliminated by removing checksum data layer by layer until the number of bits in the integrated data is a multiple of 8. In this embodiment, the original data length is 80 bits, which generates 24 bits of check data. The combined data length is 104 bits, which can be divided into 13 bytes for transmission. The order of the transmitted bytes can be flexibly adjusted as needed. For example, the original data can be transmitted in the first 10 bytes, and the check data can be transmitted in the 11th to 13th bytes. Moreover, the sorting method of the original data or check data can also be adjusted as needed. S30. Perform multi-layer parsing on wireless transmission data; like Figure 3 As shown, the received wireless transmission data is parsed layer by layer to identify valid data; First, parse the fourth layer of check data, which includes 80 bits of raw data and 23 bits of check data, and determine whether the parsed check data matches the last check data. Then, parse the 21 bits of check data generated from the first, second, and third layers of check data, and determine whether the parsed check data matches the second-to-last check data. Finally, parse the check data of the 80 bits of raw data and determine whether the parsed check data matches the third check data. Secondly, the third layer of check data is parsed to determine whether the parsed second layer of check data matches the fourth-to-last check data. Next, parse the second layer of validation data and determine whether the column validation data generated from the parsed first layer of validation matches the fifth-to-last validation data and whether the row validation data matches the sixth-to-last validation data. Finally, the first-level validation data is parsed to determine whether the validation data generated in the row and column directions of the original data conforms to the corresponding row and column validation data in sequence.

[0012] Ideally, all wireless transmission data that passes parsing is considered valid; however, in reality, a certain number of bit errors may occur, causing some wireless transmission data to fail parsing. In this case, further judgment is needed based on the parsing results.

[0013] Furthermore, the method of removing verification data layer by layer is to reduce the verification data in the order of removing the fourth layer verification, the third layer verification, and the second layer verification.

[0014] Although the embodiments of the present invention have been disclosed above, they are not limited to the applications listed in the specification and embodiments. For those skilled in the art, all features disclosed in the present invention, or all steps in all methods or processes disclosed, except for mutually exclusive features and / or steps, can be combined in any way without departing from the principles of the present invention. The present invention is not limited to the specific details and illustrations shown and described herein.

Claims

1. A method for extracting valid data from the end of transient wireless transmission based on multi-layer verification and identification, characterized in that, The method includes the following steps: S10. Perform multi-level validation on the original data; Based on the length of the original data N First, divide the original data into a minimum square matrix permutation containing all the original data. When the integers are both integers, the number of rows and columns of the square matrix are both integers. ,when When the integers are not integers, the number of rows and columns of the matrix are both 1. +1; the check method is either odd check or even check; The row data and column data of the original data are validated sequentially to obtain row validation data and column validation data, thus completing the first layer of validation. The row check data is checked again to obtain the row check bit, and the column check data is checked again to obtain the column check bit, thus completing the second layer of check. The row and column check bits are checked to complete the third layer of verification. All original data are validated again to obtain 1-bit check data; all check data obtained from the first, second, and third layers of validation are validated again to obtain 1-bit check data; the row and column data of the original data, the check data from the first, second, and third layers of validation, and the aforementioned two 1-bit check data are validated again to complete the fourth layer of validation. S20. Integrate raw data and verification data for wireless transmission; The raw data and all checksum data to be transmitted are integrated byte by byte. During the integration process, if the number of bits in the integrated data divided by 8 is not an integer and there is a remainder, then a fixed number of bits is added to fill the remainder, provided the data transmission rate allows. If the data transmission rate is limited or data transmission efficiency needs to be improved, the remainder is eliminated by removing checksum data layer by layer until the number of bits in the integrated data is a multiple of 8. S30. Perform multi-layer parsing on wireless transmission data; The received wireless transmission data is parsed layer by layer to identify valid data; First, parse the fourth layer of check data and determine whether the parsed check data matches the last check data. Then, parse the check data generated by the first, second, and third layers of check data and determine whether the parsed check data matches the second-to-last check data. Finally, parse the check data of the original data and determine whether the parsed check data matches the third-to-last check data. Secondly, the third layer of check data is parsed to determine whether the parsed second layer of check data matches the fourth-to-last check data. Next, parse the second layer of validation data and determine whether the column validation data generated from the parsed first layer of validation matches the fifth-to-last validation data and whether the row validation data matches the sixth-to-last validation data. Finally, the first-level validation data is parsed to determine whether the validation data generated in the row and column directions of the original data conforms to the corresponding row and column validation data in sequence.

2. The method for extracting valid data in the final stage of transient wireless transmission based on multi-layer verification and identification according to claim 1, characterized in that, The method of removing verification data layer by layer is to reduce the verification data in the order of removing the fourth layer verification, the third layer verification, and the second layer verification.

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