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CN119383577B - A data storage and uploading method and apparatus for a data acquisition terminal - Google Patents

A data storage and uploading method and apparatus for a data acquisition terminal

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Publication number
CN119383577B
CN119383577B CN202411279594.4A CN202411279594A CN119383577B CN 119383577 B CN119383577 B CN 119383577B CN 202411279594 A CN202411279594 A CN 202411279594A CN 119383577 B CN119383577 B CN 119383577B
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Prior art keywords
data
storage
address
stored
read
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CN119383577A (en
Inventor
张�杰
宋志刚
赵林
尹祥军
韩波
董陆涛
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Shandong Inspur Intelligent Production Technology Co ltd
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Shandong Inspur Intelligent Production Technology Co ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/30—Services specially adapted for particular environments, situations or purposes
    • H04W4/38—Services specially adapted for particular environments, situations or purposes for collecting sensor information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L63/00—Network architectures or network communication protocols for network security
    • H04L63/12—Applying verification of the received information
    • H04L63/123—Applying verification of the received information received data contents, e.g. message integrity
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
    • H04L9/40—Network security protocols

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  • Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Computer Hardware Design (AREA)
  • Computing Systems (AREA)
  • General Engineering & Computer Science (AREA)
  • Techniques For Improving Reliability Of Storages (AREA)

Abstract

The invention belongs to the technical field of data storage and communication, and particularly relates to a data storage and uploading method and device of a data acquisition terminal. The method comprises the following steps of firstly enabling a data acquisition terminal to conduct MCU main control on acquired data after the data acquisition is completed, then uploading the acquired data to a cloud platform through a wireless communication module, secondly adopting MD5 checking algorithm to check whether the data received by the platform are consistent with the transmitted data, if not, failing to transmit the data, then writing the data failing to transmit into an external Flash memory chip for storage, finally detecting the networking state at regular time, and when the networking state is good and the stored data exist, retransmitting the data stored in the Flash memory chip to the platform, and resetting a memory area. The problem of data loss caused by network problems is solved, a light-weight data storage scheme is provided for outdoor small-sized embedded equipment, the cost is reduced, and the service life of the Flash memory chip is prolonged.

Description

Data storage and uploading method and device of data acquisition terminal
Technical Field
The invention belongs to the technical field of data storage and communication, and particularly relates to a data storage and uploading method and device of a data acquisition terminal.
Background
With the development of network technology, modern society becomes more informationized, and the development of information technology is promoted by the proposal of intelligent water conservancy, intelligent industry, intelligent agriculture and the like, and various industries are digitally transformed and upgraded. The main data acquisition mode at present is to acquire data through a sensor and then upload the data to a platform network through a data acquisition terminal, or the sensor directly acquires the data and uploads the data to the platform network, and the data acquisition terminal is often required to transfer the data due to the defects of high cost, few data acquisition types and the like.
The Chinese patent document CN114257978A discloses a transmission method of sensing data of outdoor power transmission equipment, which comprises the steps of acquiring the sensing data when the sensor sends the sensing data to a transit node, wherein the sensing data is the sensing data acquired in the process of monitoring the outdoor power transmission equipment by the sensor, the sensing data represents the equipment state of the outdoor power transmission equipment, judging whether the transit node receives the sensing data or not, and if the transit node is determined not to receive the sensing data, sending the sensing data to an intelligent gateway through the candidate node, so that retransmission can be avoided when transmission failure is caused due to too long transmission distance when the transmission distance of each hop is increased, and the transmission efficiency of the sensing data is effectively improved.
In urban areas with better network conditions, the data acquisition terminal usually cannot fail in data transmission due to network problems, but in the practical application process, the data acquisition terminal is often installed in a wide field or a mountain, and network signals are difficult to guarantee. Therefore, data loss and the like often occur due to poor network conditions. At present, more methods are used to store data and then upload the data, and in an embedded system, the capacity expansion is often performed by adopting a plug-in memory mode due to the limitation of storage resources. In small embedded devices, EEPROM or Flash is usually selected as an external memory, where EEPROM has the advantages of long service life and capability of being erased in bytes, but is relatively expensive and has relatively small memory capacity, while Flash has the advantages of relatively low price and large memory capacity, but needs to be erased in sectors, so that the service life is short. The existing data storage mode at present often has the defects of high cost, complex system design and the like, and how to design a lighter and lower-cost data storage and uploading method is important.
Therefore, the invention designs a data storage and uploading method of the data acquisition terminal.
Disclosure of Invention
The invention aims to overcome the defects of the prior art, and provides a data storage and uploading method of a data acquisition terminal, which effectively improves the data stability of a simple embedded acquisition terminal, improves the efficiency, prolongs the service life of a Flash memory and reduces the terminal cost.
The invention also discloses a device loaded with the data storage and uploading method of the data acquisition terminal.
The detailed technical scheme of the invention is as follows:
a data storage and uploading method of a data acquisition terminal, the method comprising the steps of:
s1, after data acquisition is completed by a data acquisition terminal, acquired data is firstly subjected to MCU main control and then uploaded to a cloud platform through a wireless communication module;
s2, checking whether the data received by the cloud platform is consistent with the transmitted data or not by adopting an MD5 checking algorithm, and if not, failing to transmit the data;
S3, writing the data which is failed to be sent into an external Flash memory chip for storage;
the Flash memory chip determines memory allocation in the following way, wherein a sector is divided into N parts, N represents the number of data stored in the sector, M sectors are selected to store data, if the size of the Flash sector is X, the storage interval size is X/N, and because Flash can only be erased by taking the sector as a unit, one sector is used as a transition zone, and M sectors are used for storing N (M-1) data;
And S4, detecting the networking state at fixed time by adopting a heartbeat mechanism, and when the networking state is in connection, the signal is good and the stored data exists, retransmitting the data stored in the Flash memory chip to the cloud platform and resetting the memory area.
According to the invention, the step S2 specifically means that after the data is acquired, MD5 check is performed through the MCU main control, the check code and the plaintext data are transmitted, the platform side calculates the comparison check code again through MD5 to determine whether the data is complete, if the data is complete, the cloud platform returns a response code, after the data acquisition terminal receives the response code, the data is represented as complete transmission, and if the data acquisition terminal cannot receive the response code or the MD5 check code is inconsistent, the data transmission fails.
According to the present invention, in the step S3, writing the data with failed transmission into the external Flash memory chip includes the following steps:
S31, judging whether the number of the stored data is larger than or equal to the set maximum value, namely N (M-1), when the number of the stored data is smaller than the maximum value, proving that the number of the stored data is smaller than the maximum value, the storage space has a margin, then automatically increasing the number variable of the stored data by one and entering the judgment of the storage head address;
S32, judging the storage head address and the storage tail address, if both the storage head address and the storage tail address are smaller than the storage head address of the (N-1) -th data of the Mth sector, changing the writing address into the storage tail address, automatically increasing the storage interval size of the storage tail address and the storage head address, and then entering the writing address judgment; if the address of the storage head is not less than the address of the storage head of the N-1 data of the M-th sector, the writing address is changed into the address of the storage tail, the address of the storage head is changed into the address of the first end, the address of the storage tail is automatically increased by the size of the storage interval, and then the writing address judgment is carried out;
S33, since the transition area is adopted to receive the data of one sector to reduce the erasing times of Flash so as to prolong the service life of the Flash, the sector where the writing address is located needs to be judged, when the number of the stored data reaches the preset maximum value, if the writing address is at the first address of one sector, the sector is the transition area, and the data can be directly erased and then stored;
Judging whether the value of the write address for taking the remainder of the sector capacity is 0, if so, indicating that the sector is a transition area, erasing, then writing the data to be written, and simultaneously writing the number of stored data, the storage head address and the storage tail address, if not, not erasing, directly writing the data to be written, and simultaneously writing the number of stored data, the storage head address and the storage tail address.
According to the present invention, in the step S4, the specific steps of retransmitting the data stored in the Flash memory chip to the cloud platform are as follows:
S41, reading the number of stored data, a storage head address and a storage tail address to a system memory;
S42, reading data according to the number of stored data, and transmitting the read data, wherein if the read data fails to be transmitted, judging whether the read data is not failed to be transmitted for the first time and is transmitted successfully before, if not, entering a judgment area for whether all the data is read and transmitted for one time, if so, writing the current data into a space where a storage tail address is located, the self-increasing storage interval size of the storage tail address and the storage tail address into an external storage, and then entering a judgment area for judging whether all the data is read and transmitted for one time;
If the read data is successfully transmitted for the first time, judging whether the read data is successfully transmitted for the first time, if so, subtracting one from the stored data number variable, changing the storage tail address into the current read address, writing the storage tail address and the stored data number into an external storage, and entering the judgment of the current read address;
S43, because the data is circularly stored in Flash, the current read address needs to be judged, if the current read address is smaller than the storage first address of the N-1 data of the Mth sector, the current read address automatically increases the storage interval size, and then whether all data are read and sent to a first pass judgment area is judged;
S44, because there may be multiple stored data, the stored data need to be read out and sent successively, if not all read out and sent once, reading and sending are continued, if all read out and sent once, judging whether all sending of the stored data is completed, if all sending is completed, writing the empty mark of the stored data to external storage, if all sending is completed, if not, the reading and sending of the stored data are completed, and the data which is not sent successfully continue and are sent preferentially next time.
In another aspect of the present invention, there is provided a data acquisition apparatus for implementing a data storage and upload method of a data acquisition terminal, the apparatus comprising:
the external Flash memory chip is used for storing data which is not sent successfully;
the MCU master control is used for being responsible for overall control and management of the whole system;
And the wireless communication module is used for uploading data to the cloud platform.
Compared with the prior art, the invention has the beneficial effects that:
the invention provides a data storage and uploading method of a data acquisition terminal, aiming at the problems of data packet loss, data transmission failure when network conditions are poor, short storage life of external Flash and the like of the data acquisition terminal, and the data storage and uploading method of the data acquisition terminal verifies whether data transmission is complete or not each time by adopting an MD5 verification algorithm, ensures effective data transmission, ensures effective data storage of transmission failure data by adopting Flash external storage and setting a transitional storage area, prolongs the service life of Flash, and ensures that stored data can be timely transmitted to a platform by detecting network conditions at regular time.
Drawings
FIG. 1 is a flow chart of the data acquisition terminal of the present invention;
FIG. 2 is a block diagram of the Flash memory chip structure of the present invention;
FIG. 3 is a flow chart of the data storage of the present invention;
FIG. 4 is a flow chart of the memory data reading and transmitting method of the present invention;
fig. 5 is a diagram showing an implementation effect of the data acquisition terminal in the embodiment of the present invention.
Detailed Description
The invention is further described below with reference to the drawings and examples.
Example 1,
Referring to fig. 1, a data storage and uploading method of a data acquisition terminal, the method includes the following steps:
s1, after data acquisition is completed by a data acquisition terminal, acquired data is firstly subjected to MCU main control and then uploaded to a cloud platform through a wireless communication module;
s2, checking whether the data received by the cloud platform is consistent with the transmitted data or not by adopting an MD5 checking algorithm, and if not, failing to transmit the data;
S3, writing the data which is failed to be sent into an external Flash memory chip for storage;
And S4, detecting the networking state at fixed time by adopting a heartbeat mechanism, and when the networking state is in connection, the signal is good and the stored data exists, retransmitting the data stored in the Flash memory chip to the cloud platform and resetting the memory area.
The step S2 specifically means that an MD5 verification algorithm is adopted to detect the integrity of the data, after the data is collected, the data is subjected to MD5 verification by the MCU master control, and the verification code and the plaintext data are transmitted. The platform side determines whether the data is complete by carrying out MD5 calculation and comparison check codes again, if the data is complete, the platform returns a response code, the data is completely transmitted after the data acquisition terminal receives the response code, and if the data acquisition terminal cannot receive the response code or the MD5 check codes are inconsistent, the data transmission is considered to be failed.
As shown in FIG. 2, the Flash memory chip determines memory allocation by dividing a sector into N parts, where N represents the number of data pieces stored in the sector, and selecting M sectors for data storage. If the Flash sector size is X, the storage interval size is X/N. Since Flash can only be erased in sector units, one sector is used as a transition area, and M sectors are used to store N (M-1) pieces of data.
As shown in fig. 3, in step S3, writing the data of the transmission failure to the external Flash memory chip includes the steps of:
S31, firstly judging whether the number of the stored data is greater than or equal to a set maximum value, namely N (M-1), when the number of the stored data is smaller than N (M-1), proving that the number of the stored data is not greater than the maximum value, the storage space has a margin, then automatically increasing the number of the stored data by one variable and entering the judgment of a storage head address;
S32, judging a storage head address and a storage tail address, if both the storage head address and the storage tail address are smaller than the storage head address of the (N-1) -th data of the Mth sector, changing a writing address into the storage tail address, automatically increasing the storage interval size of the storage tail address and the storage head address, and then entering the writing address judgment; if the address of the storage head is not less than the address of the storage head of the N-1 data of the M-th sector, the writing address is changed into the address of the storage tail, the address of the storage head is changed into the address of the first end, the address of the storage tail is automatically increased by the size of the storage interval, and then the writing address judgment is carried out;
And S33, the scheme adopts the transition area to receive the data of one sector to reduce the erasing times of Flash so as to prolong the service life of the Flash, so that the sector where the written address is located needs to be judged, and when the number of the stored data reaches the preset maximum value, if the written address is at the first address of a certain sector, the sector is the transition area, and the data can be directly erased and then stored.
Therefore, whether the value of the write address for taking the remainder of the sector capacity is 0 needs to be judged, if so, the sector is indicated to be a transition area and can be erased, then the data to be written is written, and the number of the stored data, the storage head address and the storage tail address are written at the same time; if not, the data to be written is directly written without erasing, and the number of the stored data, the address of the storage head and the address of the storage tail are written.
The stored data stripe number in fig. 3 indicates the number of data already stored in the current Flash;
the maximum value represents the number of data which can be stored in the set Flash, and is N (M-1);
The invention adopts a ring storage mode, and the storage head address represents the head address of the storage space where the earliest piece of data is positioned in all the currently stored data;
the storage tail address represents the head address of the storage space where the last piece of data in all the currently stored data is located;
The tail data address represents the head address of the storage space where the last piece of data of the unsent data is stored, which is distributed in Flash, and is the storage head address of the (N-1) th piece of data of the Mth sector;
The write address represents the first address of the memory space to which the data is to be written;
the head address represents the head address of all the spaces which are distributed in Flash and used for storing the failed data;
Sector capacity means the number of bytes that a sector of Flash can store, here X;
the storage space size represents the size of the space occupied by a piece of data in Flash, here X/N.
As shown in fig. 4, in step S4, the data stored in the Flash memory chip is retransmitted to the platform, and the stored data needs to be read and transmitted, which specifically includes the following steps:
S41, reading the number of stored data, a storage head address and a storage tail address to a system memory;
S42, reading data according to the number of stored data, and sending the read data;
S43, if the data transmission fails, judging whether the data is not failed in the first transmission and the previous transmission is successful, if not, entering a judging area of whether all the data is read and transmitted once, if so, writing the current data into a space where a storage tail address is located, the self-increasing storage interval size of the storage tail address and the storage tail address into an external storage, and then entering a judging area of whether all the data is read and transmitted once;
s44, if the read data is successfully transmitted, judging whether the read data is successfully transmitted for the first time, if so, subtracting one from the number variable of the stored data, changing the storage tail address into the current read address, writing the storage tail address and the number of the stored data into an external storage, and entering the judgment of the current read address;
S45, judging the current read address because the data is circularly stored in Flash, if the current read address is smaller than the storage first address of the N-1 data of the Mth sector, automatically increasing the storage interval size of the current read address, and then entering a judgment area for judging whether all data are read and sent once;
S46, because there may be a plurality of stored data, the stored data needs to be read out and sent successively, if not all read out and sent once, reading and sending are continued, if all read out and sent once, judging whether all sending of the stored data is completed, if all sending is completed, writing a storage data empty mark to external storage, and if not all sending is completed, the round of storage data reading and sending is ended. The data that was not successfully transmitted will continue and be preferentially transmitted next time.
EXAMPLE 2,
The embodiment provides a data acquisition device for realizing a data storage and uploading method of a data acquisition terminal, wherein the device comprises:
the external Flash memory chip is used for storing data which is not sent successfully;
the MCU master control is used for being responsible for overall control and management of the whole system;
And the wireless communication module is used for uploading data to the cloud platform.
The data acquisition terminal is used for data acquisition of agricultural sensors in mountainous areas, the agricultural sensors generally support RS485 protocol transmission, so that the data acquisition terminal adopts RS485 input, is packaged after being processed by MCU (micro control unit) main control, and is uploaded to a monitoring cloud platform through a 4G module. The data acquisition terminal provided by the invention can timely send out the data when the signal is good, timely store the data of the agricultural sensor when the signal is bad, and upload the data in that time period after the signal is recovered, so that the phenomenon of time discontinuity of the data of the agricultural sensor can not occur. The implementation effect is shown in fig. 5:
The device comprises a 1:4G antenna, a 2:vertical rod, a 3:waterproof box, a 4:data acquisition terminal, a 5:power line, a 6:agricultural sensor and a 7:RS485 data line.

Claims (4)

1.一种数据采集终端的数据存储与上传方法，其特征在于，所述方法包括以下步骤：1. A data storage and uploading method for a data acquisition terminal, characterized in that the method includes the following steps: S1、数据采集终端对数据采集完成后，采集到的数据首先经过MCU主控，然后通过无线通讯模块上传到云平台；S1. After the data acquisition terminal completes the data acquisition, the acquired data is first controlled by the MCU main controller, and then uploaded to the cloud platform through the wireless communication module. S2、采用MD5校验算法校验云平台收到的数据是否与所发送的数据一致，若不一致则数据发送失败；S2. Use the MD5 checksum algorithm to verify whether the data received by the cloud platform is consistent with the data sent. If they are inconsistent, the data transmission will fail. S3、将发送失败的数据写入外部Flash存储芯片来进行存储；S3. Write the failed data to an external Flash memory chip for storage; 所述Flash存储芯片采用如下方式确定内存分配：将一个扇区分为N个部分，其中N代表在本扇区所存储的数据条数；选择M个扇区来进行数据的保存；若Flash扇区大小为X，则存储间隔大小为X/N；将一个扇区作为过渡区，采用M个扇区来存储N*(M-1)条数据；The Flash memory chip determines memory allocation in the following way: a sector is divided into N parts, where N represents the number of data entries stored in this sector; M sectors are selected for data storage; if the Flash sector size is X, then the storage interval size is X/N; a sector is used as a transition area, and M sectors are used to store N*(M-1) data entries. 所述将发送失败的数据写入外部Flash存储芯片具体包括以下步骤：The process of writing failed data to an external Flash memory chip specifically includes the following steps: S31、判断当前已存储数据条数是否大于等于设置的最大值，即N*(M-1)：当已存储数据条数小于最大值时，将已存储数据条数变量自增一，并进入存储头地址的判断；当已存储数据条数大于等于最大值时，进入存储头地址的判断中；当已存储数据达到预设最大值后，存储头地址与存储尾地址会自动进行增加或减小，且两者不会同时满足大于等于第M个扇区的第N-1条数据的存储首地址；S31. Determine if the number of currently stored data entries is greater than or equal to the set maximum value, i.e., N*(M-1): When the number of stored data entries is less than the maximum value, increment the variable of the number of stored data entries by one and proceed to the judgment of the storage header address; when the number of stored data entries is greater than or equal to the maximum value, proceed to the judgment of the storage header address; when the number of stored data entries reaches the preset maximum value, the storage header address and storage tail address will be automatically increased or decreased, and neither of them will simultaneously satisfy the condition of being greater than or equal to the storage header address of the N-1th data entry in the Mth sector; S32、对存储头地址与存储尾地址进行判断：若两者均小于第M个扇区的第N-1条数据的存储首地址，则将写入地址变为存储尾地址、存储尾地址与存储头地址都自增存储间隔大小，随后进入写入地址判断；若存储头地址不小于第M个扇区的第N-1条数据的存储首地址，则将写入地址变为存储尾地址、存储头地址变为首地址、存储尾地址自增存储间隔大小，随后进入写入地址判断；若存储尾地址不小于第M个扇区的第N-1条数据的存储首地址，则将写入地址变为存储尾地址、存储尾地址变为首地址、存储头地址自增存储间隔大小，随后进入写入地址判断；S32. Determine the storage head address and storage tail address: If both are less than the storage head address of the (N-1)th data in the Mth sector, change the write address to the storage tail address, increment both the storage tail address and the storage head address by the storage interval size, and then proceed to the write address determination; if the storage head address is not less than the storage head address of the (N-1)th data in the Mth sector, change the write address to the storage tail address, change the storage head address to the storage head address, increment the storage tail address by the storage interval size, and then proceed to the write address determination; if the storage tail address is not less than the storage head address of the (N-1)th data in the Mth sector, change the write address to the storage tail address, change the storage tail address to the storage head address, increment the storage head address by the storage interval size, and then proceed to the write address determination. S33、判断写入地址对扇区容量进行取余的值是否为0：若为0，则表明该扇区为过渡区，可进行擦除，然后再将待写数据进行写入，同时写入已存储数据条数、存储头地址和存储尾地址；若不为0，则不擦除，直接将待写数据进行写入，同时将已存储数据条数、存储头地址和存储尾地址进行写入；S33. Determine if the remainder of the write address divided by the sector capacity is 0: If it is 0, it indicates that the sector is a transition area and can be erased. Then, the data to be written is written, along with the number of stored data entries, the storage header address, and the storage tail address. If it is not 0, the sector is not erased, and the data to be written is written directly, along with the number of stored data entries, the storage header address, and the storage tail address. S4、采用心跳机制来定时检测联网状态，当联网状态处于连接、信号良好且存在已存储的数据时，将Flash存储芯片中存储的数据重新发送到云平台，并将存储区域清零。S4. A heartbeat mechanism is used to periodically detect the network status. When the network status is connected, the signal is good, and there is stored data, the data stored in the Flash storage chip is resent to the cloud platform, and the storage area is cleared. 2.根据权利要求1所述的一种数据采集终端的数据存储与上传方法，其特征在于，所述步骤S2具体是指，数据在采集完成后，通过MCU主控进行MD5校验，并将校验码和明文数据进行传输，平台侧通过再次进行MD5计算对比校验码来确定数据是否完整，若数据完整则云平台返回响应码，待数据采集终端收到响应码后代表数据完整的传输完毕；若数据采集终端收不到响应码，或MD5校验码不一致，则此次数据发送失败。2. The data storage and uploading method of a data acquisition terminal according to claim 1, characterized in that step S2 specifically refers to the following steps: after data acquisition, MD5 verification is performed by the MCU main control, and the verification code and plaintext data are transmitted. The platform side determines whether the data is complete by performing MD5 calculation again and comparing the verification code. If the data is complete, the cloud platform returns a response code. Once the data acquisition terminal receives the response code, it means that the data transmission is complete. If the data acquisition terminal does not receive the response code, or the MD5 verification code is inconsistent, the data transmission fails. 3.根据权利要求2所述的一种数据采集终端的数据存储与上传方法，其特征在于，所述步骤S4中，将Flash存储芯片中存储的数据重新发送到云平台具体步骤如下：3. The data storage and uploading method of a data acquisition terminal according to claim 2, characterized in that, in step S4, the specific steps for resending the data stored in the Flash storage chip to the cloud platform are as follows: S41、读取已存储数据条数、存储头地址和存储尾地址至系统内存；S41. Read the number of stored data entries, the storage header address, and the storage tail address into the system memory; S42、根据已存储数据条数进行数据的读取，并对读取的数据进行发送：若读取的数据发送失败，则判断该读取的数据是否为非第一次发送失败且之前发送成功过，若否，则进入全部数据是否已读取发送一遍判断区；若是，则将当前数据写入存储尾地址所在空间、存储尾地址自增存储间隔大小、存储尾地址写入外部存储中，随后进入全部数据是否已读取发送一遍判断区；S42. Read data according to the number of stored data entries and send the read data: If the read data fails to be sent, determine whether the read data is not the first time it has failed to be sent and whether it has been sent successfully before. If not, enter the judgment area of whether all data has been read and sent once; if so, write the current data to the space where the storage tail address is located, the storage tail address increments the storage interval size, and the storage tail address is written to the external storage, and then enter the judgment area of whether all data has been read and sent once. 若读取的数据发送成功，则判断其是否为第一次发送成功，若是，则将已存储数据条数变量减一、存储尾地址变为当前读地址，并将存储尾地址、已存储数据条数写入外部存储，并进入当前读地址的判断中；若不是第一次发送成功，则将已存储数据条数变量减一，将已存储数据条数写入外部存储，并进入当前读地址的判断中；If the read data is successfully sent, determine if it is the first successful transmission. If so, decrement the number of stored data entries by one, change the storage tail address to the current read address, write the storage tail address and the number of stored data entries to external storage, and proceed to the current read address determination. If it is not the first successful transmission, decrement the number of stored data entries by one, write the number of stored data entries to external storage, and proceed to the current read address determination. S43、对当前的读地址进行判断：若其小于第M个扇区的第N-1条数据的存储首地址，则当前读地址自增存储间隔大小，随后进入全部数据是否已读取发送一遍判断区；若不小于第M个扇区的第N-1条数据的存储首地址，则当前读地址变为首地址，并进入全部数据是否已读取发送一遍判断区；S43. Determine the current read address: If it is less than the storage start address of the (N-1)th data in the Mth sector, the current read address is incremented by the storage interval size, and then the judgment area for whether all data has been read and sent once is entered; If it is not less than the storage start address of the (N-1)th data in the Mth sector, the current read address becomes the start address, and the judgment area for whether all data has been read and sent once is entered. S44、逐次将已存储数据读出并进行发送：若未全部读出并发送一遍，则继续进行读取发送；若已完成全部读取且已发送一遍，则判断是否将存储数据全部发送完成，若已全部发送完成，则写入存储数据为空标志至外部存储，若未全部发送完成，则该轮存储数据读取发送结束，未发送成功的数据将在下次继续且优先发送。S44. Read out and send the stored data sequentially: If not all data has been read out and sent once, continue reading and sending; if all data has been read out and sent once, determine whether all stored data has been sent. If all data has been sent, write an empty data flag to external storage; if not all data has been sent, the current round of data reading and sending ends, and the unsuccessful data will be sent next time with priority. 4.一种实现如权利要求1-3任一项所述的数据采集终端的数据存储与上传方法的装置，其特征在于，所述装置包括：4. An apparatus for implementing the data storage and uploading method of a data acquisition terminal as described in any one of claims 1-3, characterized in that the apparatus comprises: 外部Flash存储芯片，用于存储未发送成功的数据；An external Flash memory chip is used to store data that was not successfully sent. MCU主控，用于负责整个系统的整体控制和管理；The MCU master controller is responsible for the overall control and management of the entire system. 无线通讯模块，用于上传数据到云平台。The wireless communication module is used to upload data to the cloud platform.
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