Beidou intelligent access system and method based on internet of things technology

Abstract

The application belongs to the technical field of Internet of Things and Beidou application, and particularly relates to a Beidou intelligent access system and method based on Internet of Things technology. The system comprises a three-layer framework of equipment, a Beidou intelligent access terminal and an Internet of Things server. The equipment and the Beidou intelligent access terminal are interconnected through a known communication interface, the Beidou intelligent access terminal and the Internet of Things server are interconnected through a network interface, the equipment and the Internet of Things server are connected through the Beidou intelligent access terminal for intelligent conversion of access protocols, and information interaction is realized. The Beidou intelligent terminal based on the Internet of Things technology is an integrated device integrating the Internet of Things and Beidou information intelligent access. By using the Internet of Things technology and the Beidou application technology, non-standard equipment is connected to the Internet of Things in a non-inductive manner, and the Beidou space-time information of the Internet of Things equipment is intelligently carried, which can be used in application scenarios such as equipment Internet of Things access, Beidou transformation of existing equipment / facilities and the like.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of Internet of Things and Beidou application, and particularly relates to a Beidou intelligent access system and method based on Internet of Things technology. BACKGROUND

[0002] At present, the development of Internet of Things is in the initial stage, and there is no unified international standard for Internet of Things. The application produced by the combination of Internet of Things technology and Internet involves all aspects of life practice and affects the development of the whole society, including the military field, transportation logistics, medical health, etc. The first step to build Internet of Things is to connect devices to the Internet of Things platform, help to establish a safe and reliable two-way connection between devices and the cloud, and support various Internet of Things scenarios such as data collection, monitoring, fault prediction, etc. of a large number of devices.

[0003] With the completion of Beidou-3 global system, it is urgent to make full use of the existing technology of Beidou satellite navigation, develop or adaptively modify Beidou intelligent access terminals with Beidou modules and standardized interfaces, upgrade and modify the existing devices / facilities to Beidou, realize the fusion of Beidou precise space-time information and important information data such as device state and performance, improve the dimension and precision of data analysis, and build a precise space-time Internet of Things based on "Beidou+".

[0004] The prior art has the following disadvantages:

[0005] 1. The interface of Internet of Things is various, and the device manufacturers form a barrier in sharing the specific communication protocol of the device / facility due to commercial or military secrets, resulting in "chimney" type development, multi-level management, and difficulty in implementing and landing the reusable and universal Internet of Things platform.

[0006] 2. The existing Internet of Things architecture is relatively loose in the fusion of Beidou space-time information access and device Internet of Things access, especially for semi-mobile and mobile devices, which lack a complete integrated solution. SUMMARY

[0007] (I) Technical problems to be solved

[0008] The technical problem to be solved by the present application is how to provide a Beidou intelligent access system and method based on Internet of Things technology to solve the problems in the background technology.

[0009] (II) Technical solutions

[0010] In order to solve the above technical problems, the application provides a Beidou intelligent access system based on Internet of Things technology, which comprises a device, a Beidou intelligent access terminal and an Internet of Things server three-layer framework; the device and the Beidou intelligent access terminal are interconnected through a known communication interface, the Beidou intelligent access terminal and the Internet of Things server are interconnected through a network interface, the device and the Internet of Things server are connected through the Beidou intelligent access terminal for intelligent conversion of access protocols, and information interaction is realized.

[0011] The device comprises an Internet of Things access device and a non-Internet of Things access device.

[0012] The Internet of Things access device refers to a device that conforms to known Internet of Things access protocols such as MQTT or HTTP and can directly access the Internet of Things server; the non-Internet of Things access device refers to a device that does not conform to known Internet of Things access protocols but needs to access the Internet of Things server.

[0013] The Beidou intelligent access terminal comprises a serial interface circuit, a CAN interface circuit, a USB interface circuit, an Ethernet interface circuit, a master control module, a network switching module and a Beidou positioning module.

[0014] The serial interface circuit, the CAN interface circuit, the USB interface circuit and the Ethernet interface circuit are electrically connected with the corresponding communication interfaces of the device, and each communication interface is converted into a level and a protocol that can be adapted to access the master control module.

[0015] The master control module comprises a transmission format packaging and analysis module, a serial-to-network communication module, an Ethernet communication module, a CAN-to-network communication module and a USB-to-network communication module.

[0016] The transmission format packaging and analysis module packages uplink data according to a known Internet of Things transmission protocol format and analyzes downlink data of the Internet of Things server end.

[0017] The serial-to-network communication module, the Ethernet communication module, the CAN-to-network communication module and the USB-to-network communication module are electrically connected with the transmission format packaging and analysis module and the network switching module, and each of them realizes mutual conversion of levels and protocols between a serial port, a network interface, a CAN interface and a USB interface and a network interface.

[0018] The network switching module realizes multi-path network port and Internet of Things server network data exchange of serial-to-network conversion, CAN-to-network conversion, USB-to-network conversion and network port.

[0019] The Beidou positioning module is used for receiving Beidou positioning position and time information.

[0020] The Internet of Things server comprises a known Internet of Things service framework and an Internet of Things gateway protocol conversion script.

[0021] The known Internet of Things service framework comprises Internet of Things access, device management, device state management, data storage, data access and other industry known service functions.

[0022] Meanwhile, the Internet of Things downlink data is converted according to a device preset communication message format, and control on the device is realized through the Beidou intelligent access terminal.

[0023] The Beidou space-time information-based object model comprises three categories of attributes, services and events of a known object model, and Beidou space-time information is added in the three categories of functions.

[0024] The main control module is realized by using a hardware architecture of an FPGA+ARM / DSP or a processing system PS+programmable logic PL of an FPGA chip with a high-performance processor.

[0025] The Beidou positioning module supports a Beidou No. 3 signal system, but also supports GPS, GLONASS and GALILEO full-system full-frequency point signal systems.

[0026] The transmission format packaging and analysis module is realized in the main control module.

[0027] The Internet of Things gateway protocol conversion script is realized in the Internet of Things server.

[0028] In addition, the application further provides a Beidou intelligent access method based on an Internet of Things technology, which is implemented by using the Beidou intelligent access system based on the Internet of Things technology.

[0029] S1: selecting a communication mode of device access, setting a frame header, a frame tail, a check and other message formats according to a device private communication message, and extracting uplink bare data;

[0030] S2: obtaining current position and time information of the device by the Beidou positioning module;

[0031] S3: adding Beidou position and time information before or after the first byte or the last byte of the device uplink bare data to construct a new communication message;

[0032] S4: packaging the new communication message according to a known Internet of Things transmission protocol format through a transmission format packaging and analysis module to realize device uplink data transmission;

[0033] S5: The Internet of Things server end constructs a device based on Beidou space-time information model from the device uplink data encapsulated by the above Internet of Things protocol, through the Internet of Things gateway protocol conversion script.

[0034] S6: The Internet of Things server end downlink data encapsulates the downlink data communication message conforming to the device receiving format through the Internet of Things gateway protocol conversion script.

[0035] S7: The downlink data communication message is parsed through the transmission format encapsulation and analysis module, and is sent to the device for control according to the communication mode and message format requirements set in S1.

[0036] (Three) beneficial effects

[0037] Compared with the prior art, the Beidou intelligent terminal based on the Internet of Things technology of the present application is an integrated device that integrates the Internet of Things and Beidou information intelligent access. By using the Internet of Things technology and Beidou application technology, the non-standard device is realized "non-sensing" Internet of Things access, and the Beidou space-time information intelligent bearing of the Internet of Things device can be used for device Internet of Things access, Beidou transformation of existing devices / facilities and other application scenarios.

[0038] The beneficial effects of the present application are as follows:

[0039] 1. The Beidou intelligent access terminal has the functions of data "transmission" compatible with serial ports, network ports, USB ports, Beidou space-time information bearing, device "transparent" control, etc., and realizes the access of known Internet of Things protocols such as MQTT or HTTP, provides "non-sensing" Internet of Things access experience for device manufacturers, and realizes the rapid intelligent access of non-standard devices of the Internet of Things "zero code".

[0040] 2. From the commercial or military security point of view, the Internet of Things server can adopt plug-ins, modules, microservices, etc., deploy Internet of Things gateway protocol conversion scripts, build Beidou space-time information-based models, and provide a complete set of Beidou space-time information access and Internet of Things access solutions for various Internet of Things scene applications, and create a precise space-time Internet of Things based on "Beidou+". BRIEF DESCRIPTION OF DRAWINGS

[0041] Figure 1 is a schematic diagram of the Beidou intelligent access system based on the Internet of Things technology of the present application;

[0042] Figure 2 is a schematic diagram of an embodiment of the Beidou intelligent access system based on the Internet of Things technology of the present application;

[0043] Figure 3 is a flowchart of the Beidou intelligent access method based on the Internet of Things technology of the present application. DETAILED DESCRIPTION

[0044] In order to make the purpose, content and advantages of the present application more clear, the specific embodiments of the present application are described in further detail below in combination with the drawings and examples.

[0045] In order to solve the above technical problems, the present application provides a Beidou intelligent access system based on Internet of Things technology, which comprises a device, a Beidou intelligent access terminal and an Internet of Things server three-layer framework; the device and the Beidou intelligent access terminal are interconnected through a known communication interface, the Beidou intelligent access terminal and the Internet of Things server are interconnected through a network interface, the device and the Internet of Things server are connected through the Beidou intelligent access terminal for intelligent conversion of access protocols, and information interaction is realized.

[0046] The device comprises an Internet of Things access device and a non-Internet of Things access device.

[0047] The Internet of Things access device refers to a device that conforms to known Internet of Things access protocols such as MQTT or HTTP and can directly access the Internet of Things server; the non-Internet of Things access device refers to a device that does not conform to known Internet of Things access protocols but needs to access the Internet of Things server.

[0048] The Beidou intelligent access terminal comprises a serial interface circuit, a CAN interface circuit, a USB interface circuit, an Ethernet interface circuit, a master control module, a network switching module and a Beidou positioning module.

[0049] The serial interface circuit, the CAN interface circuit, the USB interface circuit and the Ethernet interface circuit are electrically connected with the corresponding communication interfaces of the device, and each communication interface is converted into a level and a protocol that can be adapted to access the master control module.

[0050] The master control module comprises a transmission format packaging and analysis module, a serial-to-network communication module, an Ethernet communication module, a CAN-to-network communication module and a USB-to-network communication module.

[0051] The transmission format packaging and analysis module packages the uplink data according to a known Internet of Things transmission protocol format and analyzes the downlink data of the Internet of Things server end.

[0052] The serial-to-network communication module, the Ethernet communication module, the CAN-to-network communication module and the USB-to-network communication module are electrically connected with the transmission format packaging and analysis module and the network switching module, and each of them realizes mutual conversion of the levels and protocols of the serial interface, the network interface, the CAN interface and the USB interface and the network interface.

[0053] The network switching module realizes multi-path network port and Internet of Things server network data exchange of the serial-to-network, CAN-to-network, USB-to-network and network port.

[0054] The Beidou positioning module is configured to receive Beidou positioning position and time information.

[0055] The Internet of Things server comprises a known Internet of Things service framework and an Internet of Things gateway protocol conversion script.

[0056] The known Internet of Things service framework comprises Internet of Things access, device management, device state management, data storage, data access and other industry known service functions. The Internet of Things gateway protocol conversion script is deployed on the Internet of Things server, receives uplink data of the Beidou intelligent access terminal, constructs a device based on Beidou space-time information, and provides the Internet of Things application with a thing model.

[0057] Meanwhile, the Internet of Things downlink data is converted according to a device preset communication message format, and the device is controlled through the Beidou intelligent access terminal.

[0058] The thing model based on Beidou space-time information comprises three categories of attributes, services and events of a known thing model, and Beidou space-time information is added in the three categories of functions.

[0059] The main control module is implemented by using a hardware architecture of an FPGA+ARM / DSP or a processing system PS+programmable logic PL of an FPGA chip with a high-performance processor.

[0060] The Beidou positioning module supports a Beidou No. 3 signal system, but also supports GPS, GLONASS and GALILEO full-system full-frequency point signal systems.

[0061] The transmission format packaging and parsing module is implemented in the main control module.

[0062] The Internet of Things gateway protocol conversion script is implemented in the Internet of Things server.

[0063] In addition, the application also provides a Beidou intelligent access method based on an Internet of Things technology, which is implemented by using the Beidou intelligent access system based on the Internet of Things technology.

[0064] S1: selecting a communication mode of device access, setting a frame header, a frame tail, a check and other message formats according to a device private communication message, and extracting uplink bare data;

[0065] S2: obtaining current position and time information of the device by the Beidou positioning module;

[0066] S3: adding Beidou position and time information before the first byte or after the last byte of the device uplink bare data to construct a new communication message;

[0067] S4: The new communication message is encapsulated according to a known Internet of Things transmission protocol format by a transmission format encapsulation and analysis module, and uplink data transmission of the device is realized;

[0068] S5: The Internet of Things server end constructs a device based Beidou space-time information model from the device uplink data encapsulated by the above Internet of Things protocol, through an Internet of Things gateway protocol conversion script;

[0069] S6: The downlink data of the Internet of Things server end is encapsulated into a downlink data communication message conforming to the receiving format of the device through an Internet of Things gateway protocol conversion script;

[0070] S7: The downlink data communication message is analyzed by a transmission format encapsulation and analysis module, encapsulated according to the communication mode and message format requirements set in S1, and sent to the device for control.

[0071] Embodiment 1

[0072] As shown in Figure 1 , the present embodiment provides a Beidou intelligent access system based on Internet of Things technology, which includes a device, a Beidou intelligent access terminal and an Internet of Things server three-layer framework, the device and the Beidou intelligent access terminal are interconnected through a known communication interface, the Beidou intelligent access terminal and the Internet of Things server are interconnected through a network interface, the device and the Internet of Things server are connected through the Beidou intelligent access terminal for intelligent conversion of access protocols, and information interaction is realized, wherein:

[0073] The device includes an Internet of Things access device and a non-Internet of Things access device; the Internet of Things access device refers to a device conforming to a known Internet of Things access protocol such as MQTT or HTTP, which can directly access the Internet of Things server; the non-Internet of Things access device refers to a device that does not conform to the known Internet of Things access protocol but needs to access the Internet of Things server;

[0074] The Beidou intelligent access terminal includes a serial interface circuit, a CAN interface circuit, a USB interface circuit, an Ethernet interface circuit, a main control module, a network switching module and a Beidou positioning module;

[0075] The serial interface circuit, the CAN interface circuit, the USB interface circuit and the Ethernet interface circuit are electrically connected with the corresponding communication interfaces of the device, and each communication interface is converted into a level and a protocol that can be adapted to access the main control module; it should be noted that the serial interface circuit refers to at least one of RS232, RS422 and RS485 serial interface;

[0076] As shown in Figure 2As shown, the master module includes a transmission format packaging analysis module, a serial port to network communication module, an Ethernet communication module, a CAN to network communication module, and a USB to network communication module; the transmission format packaging analysis module packages the uplink data according to a known Internet of Things transmission protocol format and analyzes the downlink data of the Internet of Things server end; the serial port to network communication module, the Ethernet communication module, the CAN to network communication module, and the USB to network communication module are electrically connected between the transmission format packaging analysis module and the network switching module, and realize mutual conversion of the serial port, the network interface, the CAN interface, the USB interface, and the network interface level and protocol, respectively;

[0077] The network switching module realizes multi-path network port and Internet of Things server network data exchange of the serial port to network, the CAN to network, the USB to network, and the network port, and in the application, the network switching module adopts a BCM5396 chip of Broadcom Company or a domestic compatible chip JEM5396;

[0078] The Beidou positioning module can receive Beidou positioning position and time information, and in the application, the Beidou positioning module adopts a high-precision positioning and orientation board card DB503D of Changsha Higer Communication;

[0079] The Internet of Things server includes a known Internet of Things service framework and an Internet of Things gateway protocol conversion script; the known Internet of Things service framework includes Internet of Things access, device management, device state management, data storage, data access, and other industry known service functions; the Internet of Things gateway protocol conversion script is deployed on the Internet of Things server, receives uplink data of the Beidou intelligent access terminal, constructs a device based on Beidou space-time information, and provides an Internet of Things application; at the same time, downlink data of the Internet of Things is converted according to a device preset communication message format, and device control is realized through the Beidou intelligent access terminal; the device based on Beidou space-time information includes three categories of attributes, services, and events of a known device model, and Beidou space-time information is added in the three categories of functions;

[0080] Further, the master module adopts a hardware architecture of FPGA+ARM / DSP or a processing system PS+programmable logic PL of a FPGA chip with a high-performance processor, and in the application, the FPGA adopts an XC7Z045-2FFG900I chip of Xilinx Company or a domestic compatible chip FMQL45T900;

[0081] Further, the Beidou positioning module supports Beidou No. 3 signal system receiving, but can also support GPS, GLONASS, and GALILEO full-system full-frequency point signal systems;

[0082] Further, the function of the transmission format packaging analysis module is realized in the master module;

[0083] Further, the Internet of Things gateway protocol conversion script function is implemented in the Internet of Things server.

[0084] Embodiment 2

[0085] As Figure 3 shown, the present embodiment provides a Beidou intelligent access method based on Internet of Things technology, which comprises the following steps:

[0086] S1: selecting a communication mode for device access, setting frame header, frame tail, check and other message formats according to device private communication messages, and extracting uplink raw data;

[0087] The communication mode selected for device access in the present application includes RS232, RS422, RS485, CAN, USB, TCP / IP, and UDP; the settings of the serial port include baud rate, data bits, stop bits, and check bits, and the settings of CAN include baud rate, frame type, frame format, and frame ID.

[0088] It should be noted that the transmission format encapsulation and analysis module of the Beidou intelligent access terminal can capture the correct communication message from the data stream by obtaining the transmission configuration parameters of the device access communication mode, and automatically analyze the device uplink raw data according to the preset frame header, frame tail, check and other message formats in the communication message, to realize intelligent "transmission" of device data compatible with multiple communication modes.

[0089] S2: the Beidou positioning module obtains the current position and time information of the device;

[0090] It should be noted that the Beidou positioning module obtains the current position information of the device, including longitude, latitude, and altitude, and the time information, including PPS and TOD information.

[0091] S3: adding the Beidou position and time information before the first byte or after the last byte of the device uplink raw data to construct a new communication message;

[0092] In the present design, the Beidou intelligent access terminal can add Beidou space-time information in the original raw data without knowing the specific communication protocol content, which not only guarantees the security requirements of device manufacturers, but also realizes intelligent access of Beidou information.

[0093] S4: the new communication message is encapsulated according to the known Internet of Things transmission protocol format by the transmission format encapsulation and analysis module, to realize device uplink data transmission;

[0094] In the present design, the transmission format encapsulation and analysis module encapsulates the new communication message with added Beidou space-time information according to the known Internet of Things access protocol format such as MQTT or HTTP, and uploads it to the Internet of Things server.

[0095] S5: The Internet of Things server end constructs a device based on Beidou space-time information of the thing model from the device uplink data encapsulated by the above Internet of Things protocol, through the Internet of Things gateway protocol conversion script;

[0096] It should be noted that the Internet of Things gateway protocol conversion script first extracts the device uplink bare data from the MQTT or HTTP transmission protocol, then converts the device uplink data into JSON or XML data format, and finally constructs a device based on Beidou space-time information of the thing model, such as: the attribute includes the real-time Beidou positioning position and time information of the access device, the service includes the read-write instruction operation of the Beidou positioning module, and the event includes the state change information of the Beidou positioning module.

[0097] S6: The Internet of Things server end downlink data encapsulates the downlink data communication message conforming to the device receiving format through the Internet of Things gateway protocol conversion script;

[0098] It should be noted that the Internet of Things gateway protocol conversion script first reorganizes the device downlink data from the Beidou space-time information based thing model, then converts the JSON or XML data format into a binary or string data format communication message that meets the device receiving requirements, and finally encapsulates and sends it to the Beidou intelligent access terminal according to the MQTT or HTTP transmission protocol. Due to the security requirements of device manufacturers, the Internet of Things gateway protocol conversion script can be written by users, and finally deployed in the form of plug-ins, modules, microservices, etc. in the Internet of Things server.

[0099] S7: The downlink data communication message is parsed by the transmission format encapsulation and parsing module, encapsulated according to the communication mode and message format requirements set in S1, and sent to the device for control.

[0100] It should be noted that the transmission format encapsulation and parsing module first parses the received Internet of Things server downlink data communication message according to the known Internet of Things access protocol format such as MQTT or HTTP, extracts the downlink bare data, and finally encapsulates it into a communication message of the device preset communication mode according to the communication mode and message format requirements set in S1, to realize "transparent" control of the device.

[0101] Embodiment 3

[0102] The embodiment provides a Beidou intelligent access system based on Internet of Things technology, which includes a device, a Beidou intelligent access terminal, and an Internet of Things server three-layer framework. The device and the Beidou intelligent access terminal are interconnected through a known communication interface, the Beidou intelligent access terminal and the Internet of Things server are interconnected through a network interface, the device and the Internet of Things server are connected through the Beidou intelligent access terminal for intelligent conversion of access protocols, and information interaction is realized, wherein:

[0103] The device includes an Internet of Things access device and a non-Internet of Things access device; the Internet of Things access device refers to a device that conforms to a public Internet of Things access protocol such as MQTT or HTTP and can directly access an Internet of Things server; the non-Internet of Things access device refers to a device that does not conform to a public Internet of Things access protocol but needs to access an Internet of Things server;

[0104] The Beidou intelligent access terminal includes a serial interface circuit, a CAN interface circuit, a USB interface circuit, an Ethernet interface circuit, a main control module, a network switching module, and a Beidou positioning module.

[0105] The serial interface circuit, the CAN interface circuit, the USB interface circuit, and the Ethernet interface circuit are electrically connected with the corresponding communication interfaces of the device, and convert the communication interfaces into levels and protocols that can be adapted to the main control module.

[0106] The main control module includes a transmission format packaging and analysis module, a serial-to-network communication module, an Ethernet communication module, a CAN-to-network communication module, and a USB-to-network communication module; the transmission format packaging and analysis module packages uplink data according to a public Internet of Things transmission protocol format and analyzes downlink data of an Internet of Things server; the serial-to-network communication module, the Ethernet communication module, the CAN-to-network communication module, and the USB-to-network communication module are electrically connected with the transmission format packaging and analysis module and the network switching module, and respectively realize mutual conversion of the levels and protocols of the serial interface, the network interface, the CAN interface, and the USB interface and the network interface.

[0107] The network switching module realizes multi-path network interface of the serial-to-network, the CAN-to-network, the USB-to-network, and the network interface and exchanges network data with an Internet of Things server.

[0108] The Beidou positioning module can receive Beidou positioning position and time information.

[0109] The Internet of Things server includes a public Internet of Things service framework and an Internet of Things gateway protocol conversion script; the public Internet of Things service framework includes Internet of Things access, device management, device state management, data storage, data access, and other industry public service functions; the Internet of Things gateway protocol conversion script is deployed on the Internet of Things server, receives uplink data of the Beidou intelligent access terminal, constructs a thing model based on Beidou space-time information of the device, and provides an Internet of Things application; at the same time, downlink data of the Internet of Things is converted according to a device preset communication message format, and controls the device through the Beidou intelligent access terminal; the thing model based on Beidou space-time information includes three categories of attributes, services, and events of a public thing model, and adds Beidou space-time information in the three categories of functions.

[0110] Further, the master module is implemented by using a hardware architecture of FPGA+ARM / DSP or a processing system PS+programmable logic PL of a FPGA chip with a high-performance processor;

[0111] Further, the Beidou positioning module supports the Beidou No. 3 signal system receiving, but also supports GPS, GLONASS, GALILEO full system full frequency signal system;

[0112] Further, the transmission format packaging and parsing module is implemented in the master module.

[0113] Further, the Internet of Things gateway protocol conversion script function is implemented in the Internet of Things server.

[0114] The application provides a Beidou intelligent access method based on the Internet of Things technology, which comprises the following steps:

[0115] S1: selecting a communication mode of device access, setting a frame header, a frame tail, a check and other message formats according to a device private communication message, and extracting uplink raw data;

[0116] S2: the Beidou positioning module acquires current position and time information of the device;

[0117] S3: adding the Beidou position and time information before the first byte or after the last byte of the uplink raw data of the device to construct a new communication message;

[0118] S4: the new communication message is packaged according to a known Internet of Things transmission protocol format through a transmission format packaging and parsing module, and uplink data transmission of the device is realized;

[0119] S5: the Internet of Things server end constructs a device based on Beidou space-time information model through an Internet of Things gateway protocol conversion script from the uplink data of the device packaged by the above Internet of Things protocol;

[0120] S6: the Internet of Things server end downlink data is packaged into downlink data communication messages conforming to the receiving format of the device through the Internet of Things gateway protocol conversion script;

[0121] S7: the downlink data communication message is parsed through the transmission format packaging and parsing module, is packaged according to the communication mode and message format requirements set in S1, and is sent to the device for control.

[0122] The remaining matters of the application are known technologies.

[0123] The above only describes the preferred embodiments of the application, and it should be noted that, for those skilled in the art, without departing from the technical principles of the application, a number of improvements and modifications can be made, and these improvements and modifications should also be regarded as the protection scope of the application.

Claims

1. A Beidou intelligent access system based on Internet of Things technology, characterized in that, The system comprises a device, a Beidou intelligent access terminal and an Internet of Things server three-layer framework; the device and the Beidou intelligent access terminal are interconnected through a communication interface, the Beidou intelligent access terminal and the Internet of Things server are interconnected through a network interface, the device and the Internet of Things server are connected through the Beidou intelligent access terminal for intelligent conversion of access protocols, and information interaction is realized; The device comprises an Internet of Things access device and a non-Internet of Things access device. The Internet of Things access device refers to a device conforming to the Internet of Things access protocols such as MQTT or HTTP and capable of directly accessing the Internet of Things server; the non-Internet of Things access device refers to a device not conforming to the Internet of Things access protocols but needing to access the Internet of Things server. The Beidou intelligent access terminal comprises a serial interface circuit, a CAN interface circuit, a USB interface circuit, an Ethernet interface circuit, a main control module, a network switching module and a Beidou positioning module. The serial interface circuit, the CAN interface circuit, the USB interface circuit and the Ethernet interface circuit are electrically connected with the corresponding communication interfaces of the device and convert the communication interfaces into levels and protocols that can be adapted to the main control module. The main control module comprises a transmission format packaging and analysis module, a serial-to-network communication module, an Ethernet communication module, a CAN-to-network communication module and a USB-to-network communication module. The transmission format packaging and analysis module packages uplink data according to the Internet of Things transmission protocol format and analyzes downlink data of the Internet of Things server end. The serial-to-network communication module, the Ethernet communication module, the CAN-to-network communication module and the USB-to-network communication module are electrically connected with the transmission format packaging and analysis module and the network switching module and realize mutual conversion of the serial interface, the network interface, the CAN interface and the USB interface with the network interface in terms of levels and protocols. The network switching module realizes multi-path network port switching of the serial-to-network, the CAN-to-network, the USB-to-network and the network port and data exchange with the Internet of Things server network. The Beidou positioning module is used for receiving Beidou positioning position and time information. The Internet of Things server comprises an Internet of Things service framework and an Internet of Things gateway protocol conversion script. The Internet of Things service framework comprises Internet of Things access, device management, device state management, data storage and data access industry service functions. The Internet of Things gateway protocol conversion script is deployed on the Internet of Things server, receives uplink data of the Beidou intelligent access terminal, constructs a Beidou space-time information-based device physical model and provides the Internet of Things application with the device physical model. Meanwhile, downlink data of the Internet of Things is converted according to a device preset communication message format and controls the device through the Beidou intelligent access terminal. The Beidou space-time information-based device physical model comprises three categories of attributes, services and events, and Beidou space-time information is added in the three categories of functions. 2.The Beidou intelligent access system based on Internet of Things technology of claim 1, wherein, The main control module adopts a hardware architecture of FPGA+ARM / DSP or a processing system PS+programmable logic PL of a high-performance processor. 3.The Beidou intelligent access system based on Internet of Things technology of claim 2, wherein, The Beidou positioning module supports Beidou-3 signal system reception but also supports GPS, GLONASS and GALILEO full-system full-frequency point signal systems. 4.The Beidou intelligent access system based on Internet of Things technology of claim 3, wherein, The transport format encapsulation and analysis module function is implemented in the master module; The Internet of Things gateway protocol conversion script function is implemented in the Internet of Things server.

5. The Beidou intelligent access method based on Internet of Things technology implemented by the Beidou intelligent access system based on Internet of Things technology of any one of claims 1-4, characterized in that, The method comprises the following steps: S1: selecting a communication mode of a device, setting a frame header, a frame tail, and a check message format according to a private communication message of the device, and extracting uplink bare data; S2: a Beidou positioning module acquires current position and time information of the device; S3: adding the Beidou position and time information before the first byte or after the last byte of the uplink bare data of the device to construct a new communication message; S4: encapsulating the new communication message according to an Internet of Things transmission protocol format through a transport format encapsulation and analysis module to realize uplink data transmission of the device; S5: constructing an Internet of Things model of the device based on Beidou space-time information through an Internet of Things gateway protocol conversion script from the uplink data of the device encapsulated according to the Internet of Things protocol; S6: encapsulating downlink data communication messages conforming to a receiving format of the device through an Internet of Things gateway protocol conversion script from downlink data of the Internet of Things server; S7: analyzing the downlink data communication messages through a transport format encapsulation and analysis module, encapsulating according to the communication mode and message format set in S1, and sending the downlink data communication messages to the device for control.

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