Two point four gigahertz full-channel data collection and protocol analysis instrument based on IEEE802.15.4

Abstract

The invention provides a two point four gigahertz full-channel data collection and protocol analysis instrument based on the IEEE802.15.4, and relates to the technical field of wireless sensor networks. The system comprises 16 radio frequency receiving modules. Each radio frequency receiving module is in charge of unceasingly monitoring whether a wireless data message exists in a channel of the network in the 2.4 GHz ISM band or not. A data management module reads an interrupt mark in a wireless module through polling, reads the data message from the FIFO of the corresponding radio frequency receiving module, detects whether the data message confirms to the standard format of the wireless data message or not and processes the data message. The data message enters a corresponding analysis module according to a selected protocol, data packet information is analyzed field by field, the analyzed information is stored in a database to form a new data message, and the new data message is uploaded to an upper computer by calling an application program. The system further has the channel scanning function, and quality index numbers of all current channels can be obtained in real time.

Description

technical field [0001] The invention relates to the technical field of industrial wireless communication, in particular to a full-channel data acquisition and protocol analysis method in an industrial wireless sensor network test system. technical background [0002] At present, industrial wireless sensor network protocols include ISA100.11a, Wireless HART, WIA-PA, etc. These protocols involve many key technologies, such as frequency hopping technology, scheduling technology, security mechanism, etc. Implementers' different understanding of the protocol will lead to different protocol implementations. Therefore, a strict conformance test must be carried out on the protocol of the protocol implementer to detect the degree of conformity between the implementation of the protocol under test and the protocol specification, which requires a conformance test system. In the application process of these protocols, the IEEE802.15.4 standard is a physical layer and media access contr...

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Problems solved by technology

[0003] The current debugging method is to use a protocol analyzer to search for data on 16 channels. By using the channel selection method, data can only be collected on one channel, and simultaneous acquisition of 16 channels cannot be completed.

And in a complex industrial site environment, when there are multiple channel communication devices working at the same time, it will bring some inconvenience to communication debugging

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