CN104767590A - Reliable data transmission and control method for serial communication - Google Patents

Reliable data transmission and control method for serial communication Download PDF

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Publication number
CN104767590A
CN104767590A CN 201510160552 CN201510160552A CN104767590A CN 104767590 A CN104767590 A CN 104767590A CN 201510160552 CN201510160552 CN 201510160552 CN 201510160552 A CN201510160552 A CN 201510160552A CN 104767590 A CN104767590 A CN 104767590A
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data
communication
message
reliable
control method
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CN 201510160552
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Chinese (zh)
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刘建刚
谢镇
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江苏飞尚安全监测咨询有限公司
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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00Arrangements for detecting or preventing errors in the information received
    • H04L1/0001Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0009Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the channel coding
    • H04L1/001Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the channel coding applied to control information

Abstract

The invention relates to a reliable data transmission and control method for serial communication on the basis of internet-of-things terminal interconnection or data communication. When the data transmission and control method is used for communication between systems on a serial communication system, communication content is packaged and processed, so that communication reliability is guaranteed from the perspective of algorithms on the basis that a transmitting end and a receiving end conduct proper control. A complete control method and scheme which are oriented to serial communication and put forward for meeting the data reliability requirement are provided for a client. According to the method, a reliable communication model on a low-speed network can be achieved quickly and generally, and good solutions and practices are provided for serial devices supporting internet-of-things medium and low speeds and reliable data transmission under inter-node serial data transmission scenes.

Description

一种串行通信的可靠数据传输和控制方法 And reliable data transfer control method for a serial communication

技术领域 FIELD

[0001] 本发明涉及基于物联终端互联或数据传输时,一种串行通信的可靠数据传输和控制方法。 [0001] The present invention relates to a network terminal, or when the linked object based data transmission, a reliable data transmission and a control method of serial communication.

背景技术 Background technique

[0002] 基于2.5G或3G,4G或其他基于电信系统的数据传输方案,对于野外、远距离、恶劣气候等场景下,在物联网中的各个节点之间的数据通讯模式下,是常见的数据传输的方案。 [0002] Based on 2.5G or 3G, 4G or other data transmission scheme based telecommunications system, for the next field, distance, weather and other scenes, the data communication mode between respective nodes in the IOT, is a common data transmission scheme.

[0003] 国内大部分传感器基于485或232等低速串行总线设备,对这些设备的控制,数据传输等通常要求建立由控制端至节点(传感器)层的完整串行链路。 [0003] Most domestic sensor 485 or 232 based on low-speed serial bus devices, control of these devices, generally requires the establishment of data transmission from the node to the control terminal (sensor) the complete serial link layer. 这条链路可以是物理的电路连接,也可以是基于IP承载的串行协议虚拟链路,在此链路上的数据传输的可靠性控制,随着系统可靠性要求的提尚而提尚。 This link may be a physical connection circuit, based on a virtual link may be a serial protocol over IP, the reliability of the control data transmitted on this link, as the system reliability requirements and provide yet still provide .

[0004] 目前基于IP承载的Modbus协议或其他串行通讯,仅在IP分组控制上以单包方式提供数据的收发,对于大块数据的传输,我们也需要一种可靠的、可拆分的、支持重入(断点,断电)续传模式的数据传输方案和控制方法。 [0004] It Modbus protocol over IP-based or other serial communications, to provide only a single transmitting and receiving data packets in IP packet controlled manner, for the transmission of large blocks of data, we need a reliable, detachable support reentrant (breakpoint,) resume mode control method and a data transmission scheme.

发明内容 SUMMARY

[0005] 本发明要解决的技术问题是克服上述缺陷,提供一种串行通信的可靠数据传输和控制方法,以推动现有低速,低成本串行物联网设备的更广泛使用。 [0005] The present invention is to solve the technical problem overcome the above drawbacks, and to provide reliable data transmission control method for a serial communication to promote wider use of existing low-speed, low-cost serial things device.

[0006] 为解决上述问题,本发明所采用的技术方案是: [0006] In order to solve the above problem, the technical solution employed in the present invention:

一种串行通信的可靠数据传输和控制方法,该方法建立在串行通讯体系上的系统之间进行通讯时,通过对通讯内容的包装和处理,以及在发送端和接收端进行适当控制的基础上,从算法上保证通讯的可靠性的一种数据的传输和和控制;通讯双方以可靠通讯协议进行通讯,并通过控制层控制数据在通讯节点之间的可靠传递; A reliable data transmission and a control method of serial communication, when the communication method between serial communication system based on the system, through the packaging and contents of the communication process, and properly controlled at the transmitting end and the receiving end basis, to ensure the transmission reliability of communication from the algorithm and a data and control; both communicate in a reliable communications protocol, and reliable delivery of data between communication nodes is controlled by the control layer;

该方法包括如下步骤: The method comprises the steps of:

O发送者和接受者建立收发确认体系; O sender and receiver to confirm the establishment of a transceiver system;

2)建立通讯双方消息控制和传输协议,通过C RC冗余校验、数据分组模型,压缩算法,哈希算法算法中的一种或者一种以上方式实现数据的可靠性检验; 2) establishing communication and control both message transfer protocol, by C RC redundancy check, a packet data model, the compression algorithm A or algorithm hash algorithm more than one way to achieve reliability test data;

3)在传输协议的基础上,扩展实现分组,压缩协议以支持大数据和节省带宽; 3) the underlying transport protocol, the packet extension implementation, to support high data compression protocol and save bandwidth;

4)数据发送前确认; 4) data before sending an acknowledgment;

5)连接状态报告。 5) connected to the status report.

[0007] 进一步的,当发送端发出一包数据;该数据以格式编码,在消息的〃头部",包含了要发送的消息的一系列可靠性数据标识,包括: [0007] Further, when the transmitting end sends a data packet; the format data encoded in the header 〃 "message contains a list of reliability data that identifies the message to be transmitted, comprising:

A)、消息ID,该ID在应答包中包含,作为〃回执〃的标记; A), message ID, which is included in the response packet, a receipt 〃 〃 indicia;

B)、消息头CRC:当接收端收到消息后,对头部进行CRC验证; B), header CRC: When the receiver receives the message, performs a CRC verification on the head;

C)、分组标记:当数据需要多次发送时,标记了消息的第几个/共几个信息; D)、编码格式:标记了消息数据区采用的编码格式; C), packet marking: When data is transmitted multiple times, the first several numerals / Total number of information messages; D), coding format: tagged message encoding format employed in the data area;

E)、路由信息:当消息需要进行跨节点路由时,消息要的源地址和目标地址; E), the routing information: When a message needs to be routed across nodes, a message to the source address and destination address;

接收者收到发送数据后,按数据对应的头部信息各种验证; After the receiver receives the transmission data, data according to the header information corresponding to various authentication;

接收者发送应答数据,告知发送者收到数据的验证信息; Receiver sends the response data, authentication information to inform the sender receives data;

发送方收到应答后,做后续处理;对方数据是否收到否、收到的数据是否正确、是否还有后续数据要发送。 After the sender receives the reply, for further processing; if no other data is received, whether the received data is correct, if there are follow-up data to send.

[0008] 进一步的,发送端指要发送的数据,数据是一个流、或一块数据、或文件、或其他固定格式; [0008] Further, the data sender simply more transmission, a data stream or block of data, or document, or other fixed format;

发送端中的数据发送控制器提供3种模式来处理数据: Data transmission terminal transmits the controller provides three modes to process the data:

按发送策略分组的流模式数据发送; Mode packet stream transmitted by the data transmission policy;

按块大小可能需要分组的独立二进制块数据发送; Independent binary block data by block size may be required to transmit a packet;

指定格式的数据,该格式由用户定制。 Specified data format, the format customized by the user.

[0009] 进一步的,数据发送控制器.处理下列行为:控制发送策略:重试次数,错误处理;对数据块/命令自动拆包和组包;对收到的数据的分发处理;消息声明周期处理。 . [0009] Further, the data transmission controller processes the following acts: transmitting a control strategy: retry count, error handling; block of data / command automatically unpacking and pack; distribution processing of the received data; message lifecycle deal with.

[0010] 进一步的,接收端,收到数据后按需进行分组处理,接收端收到数据后,告知发送端收到的数据信息。 After packet processing demand [0010] Further, the receiving end receives the data, the receiver receives the data, the data sender to inform the data received.

[0011] 进一步的,编码格式为压缩格式。 [0011] Further, the encoding format is a compressed format.

[0012] 通讯双方可基于该协议,在串行电路(协议)上实现分组功能。 [0012] Communication may be both based on the protocol to implement the grouping function on the serial circuit (protocol).

[0013] 通讯双方可基于该协议,在串行电路(协议)上实现大数据块可靠功能功能。 [0013] The communication protocol may be based on both, to achieve reliable functioning of large blocks of data over a serial circuit function (protocol).

[0014] 本发明的有益效果: [0014] Advantageous effects of the invention:

由于采用了上述技术方案,与现有技术相比,本发明为客户提供了面向串行通讯时,对数据可靠性要求所提出的完整的控制方法和方案,通过本方法,可以快速,通用化地实现低速网络上的可靠通讯模型,对支持物联网中低速的串行设备,以及节点间串行数据传输场景下的可靠数据传输,提供了良好的解决方案和实践。 By adopting the technical solution, compared with the prior art, the present invention provides for the customer for serial communication when, for complete control method and program data reliability requirements proposed by the present method, rapid, universal models to achieve reliable communications on a low speed network, reliable data transfer between the low-speed network to support serial devices, and the node serial data transmission scenarios, provides a good solution and practice.

附图说明 BRIEF DESCRIPTION

[0015] 图1:为本发明中数据发送/接收模式说明; [0015] FIG. 1: transmission / reception mode data described present invention;

图2:为本发明中数据发送结构(消息)说明; Figure 2: Data transmission in the present structure (message) description of the invention;

图3:为本发明中大块数据分组发送和接收说明; Figure 3: the transmitting and receiving bulk data packets illustrate the present invention;

图4:为本发明中A向节点B数据发送握手说明; Figure 4: Description of A to B to send handshake data node of the present invention;

图5:为本发明中A向B发送心跳说明。 FIG 5: A B sends a heartbeat to the description of the present invention.

具体实施方式 detailed description

[0016] 下面结合附图对本发明进行详细描述: DRAWINGS The invention is described in detail in [0016] conjunction with the following:

图1说明了数据从发送端到接收端的收发示意: 1 illustrates a data transmission from a transceiver to the receiver a schematic:

当发送端发出一包请求数据;该数据以图2格式编码,在消息的"头部",包含了要发送的消息的一系列可靠性数据标识,包括: When the transmission side sends a request data packet; encoding the data of FIG. 2 format, the "head" of the message, comprising a series of data identifying a message to be sent reliability, comprising:

A)、消息ID:该ID在应答包中包含,作为〃回执〃的标记; A), Message ID: The ID contained in the response packet, a receipt 〃 〃 indicia;

B)、消息头CRC:当接收端收到消息后,对头部进行CRC验证; C)、分组标记:当数据需要多次发送时,标记了消息的第几个/共几个信息; B), header CRC: When the receiver receives the message, performs a CRC verification on the head; C), packet marking: When data is transmitted multiple times, the first several numerals / Total number information message;

D)、编码格式:标记了消息数据区采用的编码格式,通常为压缩格式; D), coding format: message data marked area encoding format employed, typically a compressed format;

E)、路由信息:当消息需要进行跨节点路由时,消息要的源地址和目标地址; E), the routing information: When a message needs to be routed across nodes, a message to the source address and destination address;

接收者收到发送数据后,按数据对应的头部信息各种验证; After the receiver receives the transmission data, data according to the header information corresponding to various authentication;

接收者发送应答数据,告知发送者收到数据的验证信息; Receiver sends the response data, authentication information to inform the sender receives data;

发送方收到应答数据后,根据应答数据进行后续处理决策: After the sender receives the response data, for subsequent processing decisions based on the response data:

对方数据收到否; No other data is received;

收到的数据正确否; No data received are correct;

是否还有后续数据要发送。 Are there any follow-up data to send.

[0017]图 2 中: [0017] FIG 2:

数据:指要发送的实际数据。 Data: the actual data sent simply more.

[0018] 尾部:对“数据”区域的CRC (冗余循环校验)填充。 [0018] Tail: (cyclic redundancy check) the filling of the CRC "Data" area.

[0019] 图3:说明了数据需要分组发送时,消息的处理模式发送端 [0019] FIG 3: illustrates a packet data transmission needs, mode message transmitting side processing

通常指要发送的数据.数据可能是一个流,或一块数据,或文件,或其他固定格式.发送器提供3种模式来处理数据.1.流模式数据发送(按发送策略分组) Simply more data typically transmitted data may be a stream, or a data or a file, or other fixed format. The transmitter provides three modes to process the data .1 The stream mode data transmission (packet transmission policy by)

2.独立二进制块数据发送(按块大小可能需要分组) 2. The independent transmission of binary data block (block size may be required by packet)

3.指定格式的数据,该格式由用户定制。 3. The data in the specified format, the format customized by the user.

[0020] 发送 [0020] Send

数据发送控制器.处理下列行为: Data transmission controller processes the following acts:

1.控制发送策略(重试次数,错误处理等等); 1. The transmission control strategy (retry count, error handling, etc.);

2.对数据块/命令自动拆包和组包; 2. The data block / command automatically unpacking and pack;

3.对收到的数据的分发处理; 3. distribution process received data;

4.消息声明周期处理。 4. The message lifecycle process.

[0021] 物理链路 [0021] The physical link

物理数据接口,本文指串口物理连接通道。 Physical data interface, serial herein refers to physically connecting channel.

[0022] 接收 [0022] Receive

数据通过实际的物理链路,在接收端收到数据。 The actual physical data link, the data received at the receiving end.

[0023] 应答包 [0023] response packet

接收端收到数据后,告知发送端收到的数据信息。 After the data received by the receiver, to inform the sending end receives data.

[0024] 接收端 [0024] receiving end

接收端,收到数据后按需进行分组处理。 The receiving terminal, on demand after receiving the data packet processing.

[0025] 图4表示了在A向B发送消息前,需要确认接收方是否在线时的消息处理过程.A发出一个握手包,尝试向B发送; [0025] FIG. 4 shows a prior A sends a message to B, need to confirm the message processing procedure when the recipient is online .A sends a handshake packet-sending to B;

B若受到该握手包,识别发送者信息,,若允许连接,则发送一个握手应答给A ; If the handshake by B, identification information of the sender ,, if allowed to connect, sending a handshake response to A;

A收到握手应答,标识和对方已经建立连接,可以进行数据处理; A handshake response is received, logos and other connection has been established, data can be processed;

A在指定时间内未收到B应答,标记无法和B建立通讯,后续通讯终止; 图5说明了A定时向B发送心跳,用于告知A存活状态信息,在多个A点同时向B报告的情况下,我们即可实现一个基于串行网络的拓扑图示功能。 A not received within the specified response time B, labeled B, and can not establish communication, subsequent communication termination; FIG. 5 illustrates the timing of sending a heartbeat to A B, A for informing a viable state information, and to report to the plurality of point A in B under the circumstances, we can implement a function-based topology diagram serial network.

Claims (6)

  1. 1.一种串行通信的可靠数据传输和控制方法,其特征在于: 该方法建立在串行通讯体系上的系统之间进行通讯时,通过对通讯内容的包装和处理,以及在发送端和接收端进行适当控制的基础上,从算法上保证通讯的可靠性的一种数据的传输和和控制;通讯双方以可靠通讯协议进行通讯,并通过控制层控制数据在通讯节点之间的可靠传递; 该方法包括如下步骤: 1)发送者和接受者建立收发确认体系; 2)建立通讯双方消息控制和传输协议,通过C RC冗余校验、数据分组模型,压缩算法,哈希算法算法中的一种或者一种以上方式实现数据的可靠性检验; 3)在传输协议的基础上,扩展实现分组,压缩协议以支持大数据和节省带宽; 4)数据发送前确认; 5)连接状态报告。 CLAIMS 1. A method for reliable data transfer and control of serial communication, wherein: when the method for establishing communication between the systems on the serial communication system, communications through the packaging and handling of the content and the sending end and Upon receiving the end properly controlled, to ensure the transmission reliability of communication from the algorithm and a data and control; both communicate in a reliable communication protocol, the control data through the control layer and reliably transferred between the communication nodes ; the method comprising the steps of: 1) the sender and receiver to confirm the establishment of a transceiver system; 2) establishing communication and control both message transfer protocol, by C RC redundancy check, a packet data model, compression algorithm, hashing algorithm reliability test data to achieve one or more than one way; 3) on the underlying transport protocol, the packet extension implementation, to support high data compression protocol and bandwidth savings; acknowledgment 4) before data transmission; 5) connected to a status report .
  2. 2.根据权利要求1所述的串行通信的可靠数据传输和控制方法,其特征在于: 当发送端发出一包数据;该数据以格式编码,在消息的"头部",包含了要发送的消息的一系列可靠性数据标识,包括: A)、消息ID,该ID在应答包中包含,作为〃回执〃的标记; B)、消息头CRC:当接收端收到消息后,对头部进行CRC验证; C)、分组标记:当数据需要多次发送时,标记了消息的第几个/共几个信息; D)、编码格式:标记了消息数据区采用的编码格式; E)、路由信息:当消息需要进行跨节点路由时,消息要的源地址和目标地址; 接收者收到发送数据后,按数据对应的头部信息各种验证; 接收者发送应答数据,告知发送者收到数据的验证信息; 发送方收到应答后,做后续处理;对方数据是否收到否、收到的数据是否正确、是否还有后续数据要发送。 The reliable data transmission and a control method of serial communication according to claim 1, wherein: when the transmitting end sends a data packet; the data format encoded in the "head" of the message, to be transmitted contains the reliability data identifying a series of messages, comprising: a), the message ID, which is included in the response packet, a receipt 〃 〃 marker; B), header CRC: when the receiver receives a message, the head C), packet marking; CRC verification section: the first few / total number of information a plurality of times when data needs transmission, the message is marked; D), coding format: tagged message encoding format employed in the data area; E) routing information: when a message needs to be routed across nodes, the source and destination addresses of the message to be; the receiver receives the transmission data, data according to various authentication information corresponding to the head; receiver sends the response data, to inform the sender You received this verification data; the sender after receiving the response, for further processing; if no other data is received, whether the received data is correct, if there are follow-up data to send.
  3. 3.根据权利要求1所述的串行通信的可靠数据传输和控制方法,其特征在于: 发送端指要发送的数据,数据是一个流、或一块数据、或文件、或其他固定格式; 发送端中的数据发送控制器提供3种模式来处理数据: 按发送策略分组的流模式数据发送; 按块大小可能需要分组的独立二进制块数据发送; 指定格式的数据,该格式由用户定制。 The reliable data transfer and serial communication control method according to claim 1, wherein: the transmitting end simply more data to be transmitted, a data stream or block of data, or document, or other fixed format; transmitting end of the data transmission controller provides three modes to process the data: stream mode data packets transmitted by the transmission policy; independently by binary block of data block size may be required to transmit a packet; specified data format, the format customized by the user.
  4. 4.根据权利要求3所述的串行通信的可靠数据传输和控制方法,其特征在于: 数据发送控制器.处理下列行为: 控制发送策略:重试次数,错误处理; 对数据块/命令自动拆包和组包; 对收到的数据的分发处理; 消息声明周期处理。 The reliable data transfer and serial communication control method according to claim 3, characterized in that: a data transmission controller processes the following acts: transmitting a control strategy: retry count, error handling; block of data / command automatically. unpacking and pack; distribution processing of the received data; message lifecycle process.
  5. 5.根据权利要求1所述的串行通信的可靠数据传输和控制方法,其特征在于:接收端,收到数据后按需进行分组处理,接收端收到数据后,告知发送端收到的数据信息。 The reliable data transfer and serial communication control method according to claim 1, wherein: the receiving terminal, on demand after receiving the data packet processing, the receiving terminal receives the data, received from the transmitting end to inform Data information.
  6. 6.根据权利要求1所述的串行通信的可靠数据传输和控制方法,其特征在于:编码格式为压缩格式。 The reliable data transfer and serial communication control method according to claim 1, wherein: coding format to a compressed format.
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