CN111669307B - Data transmission system, vehicle-mounted connector, peripheral equipment, automobile and data transmission method - Google Patents

Data transmission system, vehicle-mounted connector, peripheral equipment, automobile and data transmission method Download PDF

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Publication number
CN111669307B
CN111669307B CN202010506675.9A CN202010506675A CN111669307B CN 111669307 B CN111669307 B CN 111669307B CN 202010506675 A CN202010506675 A CN 202010506675A CN 111669307 B CN111669307 B CN 111669307B
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China
Prior art keywords
data
vehicle
peripheral equipment
data transmission
mounted connector
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CN111669307A (en
Inventor
曾庆生
张武
陈永保
张全东
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Shanghai Jiayu Intelligent Technology Co ltd
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Shanghai Xiandou Intelligent Robot Co ltd
Shanghai Xianta Intelligent Technology Co Ltd
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Publication of CN111669307A publication Critical patent/CN111669307A/en
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
    • H04L12/40—Bus networks
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00—Network arrangements or protocols for supporting network services or applications
    • H04L67/01—Protocols
    • H04L67/02—Protocols based on web technology, e.g. hypertext transfer protocol [HTTP]
    • H04L67/025—Protocols based on web technology, e.g. hypertext transfer protocol [HTTP] for remote control or remote monitoring of applications
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00—Network arrangements or protocols for supporting network services or applications
    • H04L67/01—Protocols
    • H04L67/12—Protocols specially adapted for proprietary or special-purpose networking environments, e.g. medical networks, sensor networks, networks in vehicles or remote metering networks
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W12/00—Security arrangements; Authentication; Protecting privacy or anonymity
    • H04W12/06—Authentication
    • 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
    • H04W4/40—Services specially adapted for particular environments, situations or purposes for vehicles, e.g. vehicle-to-pedestrians [V2P]
    • H04W4/48—Services specially adapted for particular environments, situations or purposes for vehicles, e.g. vehicle-to-pedestrians [V2P] for in-vehicle communication
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
    • H04L12/40—Bus networks
    • H04L2012/40208—Bus networks characterized by the use of a particular bus standard
    • H04L2012/40215—Controller Area Network CAN
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
    • H04L12/40—Bus networks
    • H04L2012/40267—Bus for use in transportation systems
    • H04L2012/40273—Bus for use in transportation systems the transportation system being a vehicle

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Health & Medical Sciences (AREA)
  • Computing Systems (AREA)
  • General Health & Medical Sciences (AREA)
  • Medical Informatics (AREA)
  • Computer Security & Cryptography (AREA)
  • Small-Scale Networks (AREA)
  • Communication Control (AREA)

Abstract

The invention provides a data transmission system, a vehicle-mounted connector, peripheral equipment, an automobile and a data transmission method, wherein the vehicle-mounted connector and the peripheral equipment are included; the second processing unit sends request information containing data transmission types and interactive contents to the vehicle-mounted connector, and the vehicle-mounted connector selectively controls corresponding data sources to carry out data connection with the peripheral equipment according to the transmission types and transmits corresponding data in the data sources to the peripheral equipment according to the data transmission contents. The data transmission system can centralize different types of data interfaces into a whole, so that the peripheral equipment can selectively receive various data in the automobile while supplying power through the data interfaces.

Description

Data transmission system, vehicle-mounted connector, peripheral equipment, automobile and data transmission method
Technical Field
The invention relates to the technical field of communication, in particular to a data transmission system, a vehicle-mounted connector, peripheral equipment, an automobile and a data transmission method.
Background
With the development of the automobile industry, the types of peripheral devices connected to an automobile are increasing, and generally, the automobile can transmit data with the peripheral devices or supply power to the peripheral devices through various interfaces on the automobile. Data of interaction between the automobile and the peripheral equipment CAN be classified into CAN network data collected from a CAN network such as vehicle speed, driving mileage, brake, engine speed, steering wheel angle, temperature of each component, engine torque, accelerator opening, brake pedal, gear lever position, etc., map data, positioning data, control command data for playing music, playing video, audio input, etc., collected image and voice data of a driver, on-off control data of each equipment associated with an HMI system, parameter setting data of each equipment, HMI system data collected from the HMI system or stored in the HMI system such as music file and video file data.
In the prior art, an automobile can supply power to peripheral equipment through an expansion socket arranged at a cigarette lighter or a USB charging interface on an automobile body; the peripheral equipment can receive HMI system data through a data interface connected with the HMI system; CAN network data CAN be received through an OBD interface on the automobile.
However, the above interfaces have independent functions, and if the power supply interface generally has only a power supply function, the power supply interface cannot receive HMI system data and CAN network data; the interface connected with the HMI system cannot receive CAN network data; the interface connected with the CAN network CAN not receive HMI system data. This limits the development of peripheral devices.
In addition, the OBD interface is a diagnosis interface, the obtained information is CAN network data, the interface belongs to a safety interface, and if illegal data writing of peripheral equipment is encountered, the safety of the automobile CAN be influenced through the OBD interface in return, and potential safety hazards exist.
Automobile manufacturers generally place OBD interfaces in relatively concealed locations, such as below the fuse box, below the storage box, and below the center console. After the peripheral equipment is connected with the OBD interface, the defect that a flat cable line is complex or the peripheral equipment cannot be arranged is caused.
Disclosure of Invention
In view of this, the present invention provides a data transmission system, a vehicle-mounted connector, a peripheral device, an automobile, and a data transmission method, where the data transmission system can integrate different types of data interfaces, so that the peripheral device can selectively receive multiple types of data in the automobile while supplying power through the data interfaces.
The invention provides a data transmission system, which comprises a vehicle-mounted connector and peripheral equipment, wherein the vehicle-mounted connector is in data connection with a plurality of data sources, the vehicle-mounted connector comprises a first data interface, a first power supply module and a first processing unit, the first power supply module and the first processing unit are electrically connected with the first data interface, the peripheral equipment comprises a second data interface and a second processing unit connected with the second data interface, the vehicle-mounted connector establishes data connection with the peripheral equipment through the first data interface and the second data interface and supplies power to the peripheral equipment, and the vehicle-mounted connector integrates the data interfaces of the data sources;
the second processing unit sends request information containing data transmission types of different data sources and data transmission contents of different data in the same data source to the vehicle-mounted connector;
the first processing unit of the vehicle-mounted connector selectively establishes data connection between a corresponding data source and the peripheral equipment according to the data transmission category and controls to transmit corresponding data in the data source to the peripheral equipment according to data transmission content, the data source comprises an HMI system and a CAN network, the data transmission category comprises HMI system data and CAN network data, the first processing unit selectively establishes data connection between the HMI system and/or the CAN network and the peripheral equipment according to request information of the data transmission category, transmits the corresponding HMI system data in the HMI system to the peripheral equipment according to the request information of the data transmission content, and/or transmits the corresponding CAN network data in the CAN network to the peripheral equipment.
Further, the vehicle-mounted connector further comprises a wireless communication module, the wireless communication module is in data connection with a cloud server, the data source comprises a cloud server, the data transmission category further comprises cloud communication data, the vehicle-mounted connector establishes data connection among the HMI system, the CAN network and/or the cloud server and the peripheral equipment according to the data transmission category, corresponding HMI system data in the HMI system are transmitted to the peripheral equipment according to request information of data transmission content, corresponding CAN network data in the HMI system are transmitted to the peripheral equipment, and/or corresponding cloud communication data in the cloud server are transmitted to the peripheral equipment.
The invention also provides a vehicle-mounted connector which comprises a first data interface, a first power supply module and a first processing unit, wherein the first power supply module and the first processing unit are electrically connected with the first data interface;
the first data interface receives request information which is transmitted by the peripheral equipment and contains data transmission types of different data sources and request information of data transmission contents of different data in the same data source, transmits the request information to the first processing unit, supplies power to the peripheral equipment through the first power supply module, and the vehicle-mounted connector integrates the data interfaces of the data sources;
the first processing unit selectively controls a corresponding data source to carry out data connection with the peripheral equipment according to the transmission type, and transmits corresponding data in the data source to the peripheral equipment according to data transmission content, wherein the data source is an HMI (human machine interface) system and a CAN (controller area network), and the data transmission type comprises HMI system data and CAN network data; the first processing unit analyzes the request information, selectively connects the HMI system and/or the CAN network with the peripheral equipment in a data connection mode according to the request information of the data transmission type, transmits corresponding HMI system data in the HMI system to the peripheral equipment according to the request information of the data transmission content, and/or transmits corresponding CAN network data in the CAN network to the peripheral equipment.
Further, the vehicle-mounted connector further comprises a wireless communication module, the wireless communication module is in data connection with a cloud server, the data source further comprises the cloud server, the data transmission category further comprises cloud communication data, the vehicle-mounted connector establishes data connection among the HMI system, the CAN network and/or the cloud server and the peripheral equipment according to the data transmission category, and transmits corresponding HMI system data in the HMI system to the peripheral equipment, transmits corresponding CAN network data in the CAN network to the peripheral equipment and/or transmits corresponding cloud communication data in the cloud server to the peripheral equipment according to request information of data transmission content.
Further, a first security module is further arranged in the vehicle-mounted connector, the first security module authenticates the peripheral equipment which establishes data connection with the vehicle-mounted connector, and after the peripheral equipment passes the authentication, the first processing unit analyzes the request information.
Further, the first security module sends inquiry information to the peripheral equipment and receives response information of the peripheral equipment, and the first security module authenticates the peripheral equipment according to the response information.
And further, the first security module receives authentication information sent by the peripheral equipment through a first data interface.
Further, the first processing unit obtains voltage information required by the peripheral equipment connected with the first data interface according to the response information of the peripheral equipment, and controls the first power supply module to supply power to the outside through the first data interface by using the voltage required by the peripheral equipment.
The invention also provides peripheral equipment which comprises a second data interface used for establishing data connection with the vehicle-mounted connector and a second processing unit connected with the second data interface, wherein the second processing unit sends request information containing data transmission types of different data sources and request information containing data transmission contents of different data transmission contents in the same data source to the vehicle-mounted connector through the second data interface, and receives the electric quantity and data transmitted by the vehicle-mounted connector through the second data interface, the data source comprises an HMI system and a CAN network, the data transmission types comprise the HMI system and the CAN network system, so that the first processing unit of the vehicle-mounted connector analyzes the request information, the HMI system and/or the CAN network are selectively connected with the peripheral equipment in a data mode according to the data request information of the data transmission types, and the HMI system and/or the CAN network are controlled to perform data interaction of HMI system data with the peripheral equipment and/or the CAN network is controlled to perform data interaction of the peripheral equipment according to the data request information of the data interaction contents.
Further, a second security module is arranged in the peripheral device, and the second security module is used for responding to the inquiry information sent by the connector after receiving the inquiry information.
Further, the server is configured to send authentication information to the vehicle-mounted connector through the second data interface.
Further, the peripheral equipment comprises a vehicle-mounted sound box, an air purifier, an intelligent sound box, a vehicle-mounted water cup, a vehicle-mounted coffee machine, a vehicle-mounted sterilizing lamp, a vehicle-mounted holographic projection, a vehicle-mounted refrigerator or a mobile phone.
The invention also provides a data transmission method based on the data transmission system, which comprises the following steps:
establishing data connection between a vehicle-mounted connector and peripheral equipment, and supplying power to the peripheral equipment through the vehicle-mounted connector, wherein the vehicle-mounted connector integrates data interfaces of a plurality of data sources;
the peripheral equipment sends request information containing request of data transmission types of different data sources and request information of data transmission contents of different data in the same data source to the vehicle-mounted connector;
the vehicle-mounted connector analyzes the data transmission type and the data transmission content;
the vehicle-mounted connector selectively controls a corresponding data source to perform data connection with the peripheral equipment according to the transmission type, and transmits corresponding data in the data source to the peripheral equipment according to data transmission content;
the data source comprises an HMI system and a CAN network, and the data transmission category comprises the HMI system and the CAN network system; the first processing unit analyzes the request information, selectively connects the HMI system and/or the CAN network with the peripheral equipment in a data connection mode according to the data request information of the data transmission type, controls the HMI system and the peripheral equipment to carry out HMI system data interaction according to the data request information of the data interaction content, and/or controls the CAN network and the peripheral equipment to carry out CAN network data interaction.
The invention also provides a data transmission method of the vehicle-mounted connector, which is based on the vehicle-mounted connector equipment and comprises the following steps:
establishing data connection between the vehicle-mounted connector and peripheral equipment, and supplying power to the peripheral equipment;
receiving request information which is sent by peripheral equipment and contains data transmission types of different data sources and request information of data transmission contents of different data in the same data source;
analyzing the request information;
selectively controlling a corresponding data source to carry out data connection with the peripheral equipment according to the transmission type, and transmitting corresponding data in the data source to the peripheral equipment according to data transmission content;
the data source comprises an HMI system, a CAN network and a cloud server, the data transmission category comprises HMI system data, CAN network data and cloud communication data, the vehicle-mounted connector establishes data connection among the HMI system, the CAN network and/or the cloud server and the peripheral equipment according to the data transmission category, and transmits the corresponding HMI system data in the HMI system to the peripheral equipment, transmits the corresponding CAN network data in the CAN network to the peripheral equipment and/or transmits the corresponding cloud communication data in the cloud server to the peripheral equipment according to the request information of the data transmission content.
Further, the method further comprises the steps of authenticating the peripheral equipment connected with the vehicle-mounted connector, and analyzing the received request information after the peripheral equipment passes the authentication.
Further, the vehicle-mounted connector obtains voltage information required by the peripheral equipment connected with the vehicle-mounted connector according to the received authentication information, and supplies power to the outside by using the voltage required by the peripheral equipment.
Further, when data transmission is carried out, the method further comprises the step that the vehicle-mounted connector encrypts output data.
The invention also provides a data transmission method of the peripheral equipment, which is based on the peripheral equipment and comprises the following steps:
establishing data connection of the peripheral equipment on the vehicle-mounted connector, and receiving power supply of the vehicle-mounted connector;
sending request information containing data transmission types of different data sources and request information of data transmission contents of different data in the same data source to the vehicle-mounted connector;
the data source comprises an HMI system and a CAN network, and the data transmission category comprises the HMI system and the CAN network system; the first processing unit analyzes the request information, selectively connects the HMI system and/or the CAN network with the peripheral equipment in a data connection mode according to the data request information of the data transmission type, controls the HMI system and the peripheral equipment to perform HMI system data interaction according to the data request information of the data interaction content, and/or controls the CAN network and the peripheral equipment to perform CAN network data interaction.
Further, the method includes receiving data transmissions from a plurality of data sources via the onboard connector.
Further, before transmitting request information including the data transfer type and the data transfer content, authentication information is transmitted to the vehicle-mounted connector connected to the peripheral device, or after receiving a request for authentication information transmitted from the vehicle-mounted connector, a response is made to the request for authentication information.
The invention further provides an automobile comprising the vehicle-mounted connector.
In summary, in the present invention, a plurality of data sources, such as the CAN network and the HMI system, are integrated by the arrangement of the vehicle-mounted connector, and the peripheral device CAN be selectively connected to the CAN network and the HMI system through the first data interface 11 and the second data interface. At this time, the first data interface not only serves as an interface for supplying power to the peripheral equipment by the vehicle-mounted connector, but also serves as an integrated interface for various data transmission on the automobile, and a plurality of data sources can transmit data to the peripheral equipment at the same time through the interface. Therefore, the peripheral equipment CAN be connected with the automobile more easily, relevant operations of the peripheral equipment CAN be carried out by receiving data on the automobile, the peripheral equipment CAN be powered by the automobile, meanwhile, connecting lines with a CAN (controller area network) and/or an HMI (human machine interface) system do not need to be independently arranged, the connection process of the peripheral equipment is simplified, and the application and the type of the peripheral equipment on the automobile are expanded. Furthermore, the peripheral equipment can acquire various data of the automobile and the cloud server more easily by means of related sensors in the automobile, the types of acquired data are increased, the peripheral equipment can perform related analysis on more data, and the intelligent degree of the peripheral equipment is improved. Furthermore, the peripheral equipment does not need to be provided with various information acquisition units and network transmission units which are repeated with the functions of the automobile, the cost of the peripheral equipment is reduced, and the popularization of various peripheral equipment in the automobile can be accelerated.
The foregoing description is only an overview of the technical solutions of the present invention, and in order to make the technical means of the present invention more clearly understood, the present invention may be implemented in accordance with the content of the description, and in order to make the above and other objects, features, and advantages of the present invention more clearly understood, the following preferred embodiments are described in detail with reference to the accompanying drawings.
Drawings
Fig. 1 is a system block diagram of a data transmission system according to an embodiment of the present invention.
Fig. 2 is a system block diagram of the vehicle-mounted connector according to the embodiment of the present invention.
Fig. 3 is a system block diagram of a peripheral device according to an embodiment of the present invention.
Fig. 4 is a schematic flowchart of a data transmission method when a data transmission system performs data transmission according to an embodiment of the present invention.
Fig. 5 is a schematic flow chart of a data transmission method when the vehicle-mounted connector performs data transmission according to an embodiment of the present invention.
Fig. 6 is a schematic flowchart of a data transmission method when the peripheral device performs data transmission according to an embodiment of the present invention.
Detailed Description
To further explain the technical means and effects of the present invention adopted to achieve the predetermined objects, the following detailed description is given with reference to the accompanying drawings and preferred embodiments.
The invention provides a data transmission system, a vehicle-mounted connector, peripheral equipment, an automobile and a data transmission method.
Fig. 1 is a system block diagram of a data transmission system according to an embodiment of the present invention. As shown in fig. 1, the data transmission system according to the embodiment of the present invention includes a vehicle-mounted connector 10 and a peripheral device 20 in data connection with the vehicle-mounted connector 10, where the vehicle-mounted connector 10 is in data connection with a plurality of data sources. The vehicle-mounted connector 10 is provided with a first data interface 11, a first power supply module 16 and a first processing unit 12, the first processing unit 12 and the first power supply module 16 are both electrically connected with the first data interface, the first power supply module 16 is connected with a storage battery of an automobile, the peripheral equipment 20 is provided with a second data interface 21, a second processing unit 22 and a second power supply module 23, the second processing unit 22 and the second power supply module 23 are electrically connected with the second data interface 21, the vehicle-mounted connector 10 is connected with the peripheral equipment 20 through the first data interface 11 and the second data interface 21, the second processing unit 22 sends request information containing data transmission types requesting different data sources and request information of different data transmission contents in the same data source to the first processing unit 12 through the second data interface 21 and the first data interface 11, and supplies power to the peripheral equipment 20 through the first power supply module 16 and the second power supply module 23, and the first processing unit 12 selectively establishes data connection between the corresponding data sources and the peripheral equipment 20 according to the data transmission types and transmits corresponding data in the peripheral equipment 20 according to the data transmission contents.
More specifically, the data source may be an HMI system and a CAN network, and accordingly, the data transmission category may include HMI system data and CAN network data. The first processing unit 12 selectively connects the HMI system and/or the vehicle CAN network to the peripheral device 20 through the first data interface 11 and the second data interface 21 according to the request information of the data transmission type, and transmits corresponding HMI system data in the HMI system to the peripheral device 20 through the first data interface 11 and the second data interface 21 according to the request information of the data transmission content, and/or transmits corresponding CAN network data in the CAN network to the peripheral device 20.
In this embodiment, the data transmission content of the HMI system data includes, but is not limited to, a file stored in the vehicle-mounted entertainment system, a control command acquired from the vehicle-mounted entertainment system, information acquired by information acquisition equipment such as an instrument display, a camera, a radar, and the like; the data transmission content of the CAN network data includes, but is not limited to, original vehicle body data of vehicle speed, driving mileage, brake, engine speed, steering wheel angle, temperature of each component, engine torque, accelerator opening, brake pedal, gear lever position, and the like.
First, the peripheral device 20, which has been connected to the in-vehicle connector 10, CAN selectively make a data connection with the HMI system of the automobile and/or the automobile CAN network through the in-vehicle connector 10 according to the data transmission category transmitted by the peripheral device 20. When the peripheral equipment 20 sends a request for data transmission with the HMI system, the vehicle-mounted connector 10 connects the HMI system with the peripheral equipment 20 and transmits corresponding HMI system data to the peripheral equipment 20 according to the data transmission content; when the peripheral equipment 20 sends a request for data transmission with the CAN network, the vehicle-mounted connector 10 establishes data connection between the CAN network and the peripheral equipment 20 and transmits corresponding CAN network data to the peripheral equipment according to data transmission content; when the peripheral device 20 simultaneously sends a request for data transmission with the HMI system and data transmission with the CAN network, the vehicle-mounted connector 10 simultaneously establishes data connection between the CAN network and the HMI system and the peripheral device 20, and sends corresponding CAN network data and HMI system data to the peripheral device 20 according to the data transmission content.
That is, in the present embodiment, a plurality of data sources, such as a CAN network and an HMI system, are integrated by the arrangement of the vehicle-mounted connector 10, and the peripheral device 20 CAN be selectively connected to the CAN network and the HMI system through the first data interface 11 and the second data interface 21. That is, in this case, the first data interface 11 serves not only as an interface for supplying power to the peripheral device 20 via the vehicle-mounted connector 10, but also as an integrated interface for various data transmissions in the vehicle, through which a plurality of data sources can simultaneously transmit data to the peripheral device 20. Thus, the peripheral device 20 CAN be more easily connected to the vehicle, and the relevant operations of the peripheral device CAN be performed by receiving the data from the vehicle, and the peripheral device 20 CAN be supplied with power by the vehicle without independently arranging a connection line with a CAN network and/or an HMI system, thereby simplifying the connection process of the peripheral device 20 and expanding the applications and kinds of the peripheral device 20 on the vehicle.
Further, in the present embodiment, the first data interface 11 and the second data interface 21 may be, but not limited to, a USB interface, a UART interface, a CAN line interface, an LVDS interface, an HDMI interface, or an MIPI interface.
In this embodiment, when the peripheral device 20 sends the request information, the data transmission type code and the data transmission content code may be added to the header of the request information to make the data transmission type and the data transmission content clear; the in-vehicle connector 10 may determine the data transmission type and the data transmission content requested by the peripheral device 20 by analyzing the header in the request information of the peripheral device 20.
Further, in this embodiment, the vehicle-mounted connector 10 further includes a wireless communication module 13 such as 4G and/or 5G, the wireless communication module 13 is connected to a cloud server such as an IOT (Internet of Things) platform data, the data transmission category further includes cloud communication data, when the first processing unit 12 determines that the request information of the data transmission category of the peripheral device 20 is the cloud communication data, the vehicle-mounted connector 10 establishes data connection between the peripheral device 20 and the cloud server, and transmits the corresponding cloud communication data in the cloud server to the peripheral device 20 through the wireless communication module 13, the first data interface 11 and the second data interface 21 according to the request information of the data transmission content.
That is, the vehicle-mounted connector 10 establishes data connection between the HMI system, the CAN network, and/or the cloud server and the peripheral device 20 according to the data transmission category, and transmits corresponding HMI system data in the HMI system to the peripheral device 20, corresponding CAN network data in the CAN network to the peripheral device 20, and/or corresponding cloud communication data in the cloud server to the peripheral device 20 according to request information of data transmission content.
In this embodiment, the cloud communication data includes, but is not limited to, control command data of a remote mobile device such as a mobile phone, and information service data provided by platform service providers such as weather information, road condition information, map information, song information, video information, and broadcast information.
Further, in this embodiment, the vehicle-mounted connector 10 is further provided with a first security module 14, the peripheral device 20 is further provided with a second security module 24, when the peripheral device 20 establishes a data connection with the vehicle-mounted connector 10, the second security module 24 sends authentication information to the vehicle-mounted connector 10, the first security module 14 authenticates the peripheral device 20 that establishes the data connection with the vehicle-mounted connector 10, and the vehicle-mounted connector 10 only analyzes the request information of the authenticated peripheral device 20.
In this embodiment, during the authentication process, the peripheral device 20 transmits authentication information to the first security module 14 through the second data interface 21 and the first data interface 11, and the first security module 14 authenticates the peripheral device through the authentication information.
In other embodiments, the first security module 14 sends a query message to the second security module 24, the second security module 24 receives the query message and then responds, and the first security module 14 authenticates the peripheral device 20 according to the response message.
More specifically, at this point, the first security module 14 may be a reader of a wireless radio and the second security module 24 may be a transponder of a wireless radio. The Radio Frequency devices include, but are not limited to, radio Frequency Identification (RFID) devices and Near Field Communication (NFC) devices.
Further, in this embodiment, the first data interface 11 includes a plurality of data interfaces providing different voltages, and the first processing unit 12 controls the first power supply module 16 to supply power to the peripheral device 20 connected to one of the first data interfaces 11 after detecting that the peripheral device 20 is connected to the first data interface 11.
In another embodiment, the voltage provided by the first data interface 11 is not distinguished, and after the first security module 14 authenticates the peripheral device 20, the first processing unit 12 obtains the voltage information required by the peripheral device 20 connected to the first data interface 11, and controls the first power supply module 16 to supply power to the peripheral device through the first data interface at the voltage required by the peripheral device 20.
More specifically, at this time, the first power supply module 16 may include a BUCK circuit or a BOOST circuit to enable a voltage output to the outside by the same first data interface to be changed.
Further, during the data transmission between the peripheral device 20 and the vehicle-mounted connector 10, the first security module 14 and the second security module 24 encrypt and decrypt the transmitted and received data.
Further, a circuit protection module 17 is disposed on the vehicle-mounted connector 10 to protect the vehicle and the peripheral device 20 during power supply.
In summary, in the present invention, a plurality of data sources, such as a CAN network and an HMI system, are integrated by the arrangement of the vehicle-mounted connector 10, and the peripheral device 20 CAN be selectively connected to the CAN network and the HMI system through the first data interface 11 and the second data interface 21. That is, in this case, the first data interface 11 serves not only as an interface for supplying power to the peripheral device 20 via the vehicle-mounted connector 10, but also as an integrated interface for various data transmissions in the vehicle, through which a plurality of data sources can simultaneously transmit data to the peripheral device 20. Therefore, the peripheral equipment 20 CAN be connected with the automobile more easily, relevant operations of the peripheral equipment are carried out by receiving data on the automobile, the peripheral equipment 20 is powered by the automobile, meanwhile, a connecting line with a CAN (controller area network) and/or an HMI (human machine interface) system does not need to be independently arranged, the connecting process of the peripheral equipment 20 is simplified, and the application and the variety of the peripheral equipment 20 on the automobile are expanded. Further, the peripheral device 20 can more easily acquire various data of the vehicle and the cloud server by using a relevant sensor in the vehicle, so that the types of the acquired data are increased, the peripheral device 20 can perform relevant analysis on more data, and the intelligence degree of the peripheral device 20 is improved. Furthermore, the peripheral device 20 does not need to be provided with various information acquisition units and network transmission units which are repeated with the functions of the automobile, so that the cost of the peripheral device 20 is reduced, and the popularization of various peripheral devices 20 in the automobile can be accelerated.
Fig. 2 is a system block diagram of the vehicle-mounted connector according to the embodiment of the present invention. As shown in fig. 2, the present invention further provides a vehicle-mounted connector 10, where the vehicle-mounted connector 10 includes a first data interface 11 for establishing a data connection with an external device 20, a first power supply module 16 for supplying power to the external device 20, and a first processing unit 12, where the first processing unit 12 and the first power supply module 16 are both electrically connected to the first data interface 11, and the first processing unit 12 analyzes request information from the external device 20, which includes data transmission category request information requesting different data sources and request information of different data transmission contents in the same data source, selectively establishes a data connection between a corresponding data source in an automobile and the first data interface 11 according to the request information of the data transmission category, and transmits corresponding data in the data source to the outside through the first data interface according to the data transmission contents.
In this embodiment, the first processing unit 12 enables the peripheral device 20 connected to the first data interface to be data-connected to different data sources in the vehicle via the in-vehicle connector 10 by establishing a data connection between the different data sources and the first data interface 11.
Further, the data source may be an HMI system and a CAN network, that is, the data transmission type may be HMI system data and CAN network data. The vehicle-mounted connector 10 connects the HMI system and/or the automobile CAN network with the first data interface 11 according to the data transmission category, and controls the HMI system data in the HMI system to be transmitted outwards and/or controls the CAN network data in the CAN network to be transmitted outwards through the first data interface 11 according to the request information of the data transmission content.
Further, in this embodiment, the vehicle-mounted connector 10 further includes a wireless communication module 13, the wireless communication module 13 is in data connection with the cloud server, at this time, the data source may also be the cloud server, and the data transmission category correspondingly includes cloud communication data. The first processing unit 12 analyzes the received request information including the data transmission category and the data transmission content, the vehicle-mounted connector 10 establishes data connection between the HMI system, the CAN network and/or the cloud server and the first data interface according to the data transmission category, and transmits corresponding HMI system data in the HMI system to the outside through the first data interface 11, corresponding CAN network data in the CAN network to the outside through the first data interface 11, and/or transmits corresponding cloud communication data in the cloud server to the outside through the first data interface 11 according to the request information of the data transmission content.
In this embodiment, the first security module 14 is further disposed in the vehicle-mounted connector 10, and after the peripheral device 20 establishes a data connection with the vehicle-mounted connector 10, the first security module 14 authenticates the peripheral device 20 that establishes a data connection with the vehicle-mounted connector 10, and the vehicle-mounted connector 10 only analyzes the request information of the authenticated peripheral device 20.
In this embodiment, in the authentication process, the peripheral device 20 transmits authentication information to the first security module 14 through the second data interface 21 and the first data interface 11, and the first security module 14 authenticates the peripheral device through the authentication information.
In other embodiments, the first security module 14 sends out an inquiry message to the peripheral device 20 and receives a response message from the peripheral device 20, and the first security module 14 authenticates the peripheral device 20 according to the response message.
More specifically, in this case, the first security module 14 may be a reader of a radio frequency device, and a transponder of the radio frequency device is provided in the external device 20, correspondingly. The Radio Frequency devices include, but are not limited to, radio Frequency Identification (RFID) devices and Near Field Communication (NFC) devices.
Further, in this embodiment, the first data interface 11 includes a plurality of data interfaces providing different voltages, and the first processing unit 12 controls the first power supply module 16 to supply power to the outside through the first data interface 11 after detecting that one of the first data interfaces 11 is connected to the peripheral device 20.
In another embodiment, the voltage provided by the first data interface 11 is not distinguished, and after the first security module 14 authenticates the peripheral device 20, the first processing unit 12 obtains the voltage information required by the peripheral device 20 connected to the first data interface 11, and controls the first power supply module 16 to supply power to the outside through the first data interface at the voltage required by the peripheral device 20.
More specifically, at this time, the first power supply module 16 may include a BUCK circuit or a BOOST circuit, so that the voltage output to the outside by the same first data interface can be changed.
Further, the first security module 14 encrypts data respectively during the output of the data through the in-vehicle connector 10.
Further, a circuit protection module 17 is disposed in the vehicle-mounted connector 10 to protect the vehicle and the peripheral device 20 during power supply.
Fig. 3 is a system block diagram of a peripheral device according to an embodiment of the present invention. As shown in fig. 3, the present invention further provides a peripheral device 20, where the peripheral device 20 includes, but is not limited to, a car stereo, an air purifier, a smart stereo, a car cup, a car coffee machine, a car germicidal lamp, a car holographic projection, a car refrigerator or a mobile phone.
The peripheral device 20 includes a second data interface 21 connected to the vehicle-mounted connector 10 and a second processing unit 22 connected to the second data interface 21, where the second processing unit 22 sends request information including data transmission types requesting different data sources and request information of data transmission contents of different data transmission contents in the same data source to the vehicle-mounted connector 10 through the second data interface 21, and receives the electric quantity and data transmitted by the vehicle-mounted connector 10 through the second data interface 21.
Further, the peripheral device 20 further includes a second security module 24, and the second security module 24 is configured to send authentication information to the vehicle-mounted connector 10 or respond to the authentication information after receiving inquiry information sent by the vehicle-mounted connector 10. Alternatively, the second security module 24 may be an electronic tag, a radio frequency card, or an NFC transponder, etc.
Further, the second security modules 24 respectively encrypt the received data transferred from the in-vehicle connector 10.
Fig. 4 is a schematic flowchart of a data transmission method when a data transmission system performs data transmission according to an embodiment of the present invention. As shown in fig. 4, the present invention further provides a data transmission method based on the data transmission system, which includes the following steps:
s11: establishing data connection between a vehicle-mounted connector 10 and peripheral equipment 20, and supplying power to the peripheral equipment through the vehicle-mounted connector;
s12: the peripheral device 20 sends request information including request information for data transmission categories of different data sources and request information for different data transmission contents in the same data source to the in-vehicle connector 10;
s13: the vehicle-mounted connector 10 analyzes the data transmission type and the data transmission content;
s14: and selectively controlling the corresponding data source to perform data connection with the peripheral equipment according to the data transmission type, and transmitting the corresponding data in the data source to the peripheral equipment 20 according to the data transmission content.
In this embodiment, the data source CAN come from HMI system, CAN network and cloud server, and correspondingly, the data transmission classification CAN include HMI system data, CAN network data and cloud communication data, because the data source of HMI system data is HMI system, the data source of CAN network data is the CAN network, and the data source of cloud communication data is cloud server. Therefore, data connection between the HMI system, the CAN network, and/or the cloud server and the peripheral device 20 is selectively established according to the data transmission type, and HMI system data in the HMI system is transmitted to the peripheral device 20, CAN network data in the CAN network is transmitted to the peripheral device 20, and/or cloud communication data in the cloud server is transmitted to the peripheral device 20 according to the data transmission content.
Further, the method also includes: the peripheral device 20 transmits authentication information to the in-vehicle connector 10, the in-vehicle connector 10 authenticates the data-connected peripheral device 20, and after the authentication is passed, the in-vehicle connector 10 analyzes the received request information of the data transmission type and the data transmission content.
Further, the method further comprises: the voltage information required by the peripheral device 20 is acquired in the authentication process, and power is supplied to the outside at the voltage required by the peripheral device 20.
Further, when data transmission is performed, the method further includes: the in-vehicle connector 10 encrypts each output data, and the peripheral device 20 decrypts the received data.
Fig. 5 is a schematic flow chart of a data transmission method when the vehicle-mounted connector performs data transmission according to an embodiment of the present invention. As shown in fig. 5, the present invention further provides a data transmission method of the vehicle-mounted connector 10, which includes:
s21: establishing data connection between the vehicle-mounted connector 10 and the peripheral equipment 20;
s22: receiving request information including a request for a data transmission category of a different data source and request information for data transmission contents of different data transmission contents in the same data source, which are sent from the peripheral device 20;
s23: analyzing the received request information;
s24: and selectively controlling the corresponding data source to carry out data connection with the peripheral equipment according to the transmission type, transmitting the corresponding data in the data source outwards according to the data transmission content, and supplying power outwards.
In this embodiment, the data transmission category includes HMI system data, CAN network data, and cloud communication data, and the data source of the HMI system data is an HMI system, the data source of the CAN network data is a CAN network, and the data source of the cloud communication data is a cloud server. Therefore, the vehicle-mounted connector 10 selectively establishes data connection between the HMI system, the CAN network, and/or the cloud server and the peripheral device 20 according to the data transmission type in the request message, and outputs the corresponding HMI system data in the HMI system and the corresponding CAN network data in the CAN network to the outside according to the data transmission content in the request message.
Further, the method further comprises: the peripheral device 20 is authenticated, and after the authentication is passed, the received request information is analyzed.
Further, the method further comprises: voltage information required by the peripheral device 20 is acquired in the authentication process, and power is supplied to the outside at a voltage required by the peripheral device 20.
Further, when data transmission is performed, the method further includes: and encrypting the output data.
Fig. 6 is a schematic flowchart of a data transmission method when the peripheral device performs data transmission according to an embodiment of the present invention. As shown in fig. 6, the present invention further provides a data transmission method of the peripheral device 20, where the method includes:
s31: establishing data connection between the vehicle-mounted connector 10 and the peripheral equipment 20, and receiving power supply of the vehicle-mounted connector;
s32: sending request information containing a request for a data transmission category of different data sources and request information for data transmission contents of different data in the same data source to the in-vehicle connector 10;
s33: data transmitted by the in-vehicle connector 10 is received.
Further, the method includes receiving data transmissions from a plurality of data sources via the in-vehicle connector 10.
Further, the method includes transmitting authentication information to the in-vehicle connector 10 before transmitting request information including a data transmission type and a data transmission content, or responding to the authentication request after receiving the authentication request transmitted by the in-vehicle connector 10.
Further, the method includes decrypting the received data.
The present invention further provides an automobile including the above-mentioned vehicle-mounted connector 10, and for other technical features of the automobile, please refer to the prior art, which is not described herein again.
Although the present invention has been described with reference to a preferred embodiment, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims (21)

1. A data transmission system, characterized by: the vehicle-mounted connector is in data connection with a plurality of data sources, the vehicle-mounted connector comprises a first data interface, a first power supply module and a first processing unit, the first power supply module and the first processing unit are electrically connected with the first data interface, the peripheral equipment comprises a second data interface and a second processing unit connected with the second data interface, the vehicle-mounted connector establishes data connection with the peripheral equipment through the first data interface and the second data interface and supplies power to the peripheral equipment, and the vehicle-mounted connector integrates the data interfaces of the data sources;
the second processing unit sends request information containing request information of data transmission types of different data sources and request information of data transmission contents of different data in the same data source to the vehicle-mounted connector;
the first processing unit of the vehicle-mounted connector selectively establishes data connection between a corresponding data source and the peripheral equipment according to the data transmission category and controls to transmit corresponding data in the data source to the peripheral equipment according to data transmission content, the data source comprises an HMI system and a CAN network, the data transmission category comprises HMI system data and CAN network data, the first processing unit selectively establishes data connection between the HMI system and/or the CAN network and the peripheral equipment according to request information of the data transmission category, transmits the corresponding HMI system data in the HMI system to the peripheral equipment according to the request information of the data transmission content, and/or transmits the corresponding CAN network data in the CAN network to the peripheral equipment.
2. The data transmission system of claim 1, wherein: the vehicle-mounted connector further comprises a wireless communication module, the wireless communication module is in data connection with a cloud server, the data source comprises the cloud server, the data transmission category further comprises cloud communication data, the vehicle-mounted connector establishes data connection among the HMI system, the CAN network and/or the cloud server and the peripheral equipment according to the data transmission category, corresponding HMI system data in the HMI system are transmitted to the peripheral equipment according to request information of data transmission contents, corresponding CAN network data in the HMI system are transmitted to the peripheral equipment, and/or corresponding CAN network data in the CAN network are transmitted to the peripheral equipment, and/or corresponding cloud communication data in the cloud server are transmitted to the peripheral equipment.
3. An on-vehicle connector, its characterized in that: the system comprises a first data interface, a first power supply module and a first processing unit, wherein the first power supply module and the first processing unit are electrically connected with the first data interface;
the first data interface receives request information which is transmitted by peripheral equipment and contains data transmission types of different data sources and request information of data transmission contents of different data in the same data source, transmits the request information to the first processing unit, supplies power to the peripheral equipment through the first power supply module, and the vehicle-mounted connector integrates the data interfaces of the data sources;
the first processing unit selectively controls corresponding data sources to be in data connection with the peripheral equipment according to the transmission types, and transmits corresponding data in the data sources to the peripheral equipment according to data transmission contents, wherein the data sources are an HMI (human machine interface) system and a CAN (controller area network), and the data transmission types comprise HMI system data and CAN network data; the first processing unit analyzes the request information, selectively connects the HMI system and/or the CAN network with the peripheral equipment in a data connection mode according to the request information of the data transmission type, transmits corresponding HMI system data in the HMI system to the peripheral equipment according to the request information of the data transmission content, and/or transmits corresponding CAN network data in the CAN network to the peripheral equipment.
4. The vehicle-mounted connector according to claim 3, characterized in that: the vehicle-mounted connector further comprises a wireless communication module, the wireless communication module is in data connection with a cloud server, the data source further comprises the cloud server, the data transmission category further comprises cloud communication data, the vehicle-mounted connector establishes the HMI system, the CAN network and/or the cloud server according to the data transmission category and the data connection between the peripheral devices, and transmits corresponding HMI system data in the HMI system to the peripheral devices, transmits corresponding CAN network data in the CAN network to the peripheral devices according to the request information of the data transmission content, and/or transmits corresponding cloud communication data in the cloud server to the peripheral devices.
5. The vehicle-mounted connector according to claim 3, characterized in that: the vehicle-mounted connector is internally provided with a first safety module, the first safety module authenticates the peripheral equipment which is in data connection with the vehicle-mounted connector, and the first processing unit analyzes the request information after the authentication is passed.
6. The vehicular connector according to claim 5, wherein: the first security module sends inquiry information to the peripheral equipment and receives response information of the peripheral equipment, and the first security module authenticates the peripheral equipment according to the response information.
7. The vehicle-mounted connector according to claim 5, wherein: and the first security module receives authentication information sent by the peripheral equipment through a first data interface.
8. The vehicle-mounted connector according to claim 6 or 7, characterized in that: the first processing unit obtains voltage information required by the peripheral equipment connected with the first data interface according to the authentication information transmitted by the peripheral equipment, and controls the first power supply module to supply power to the outside through the first data interface by using the voltage required by the peripheral equipment.
9. A peripheral device, characterized by: the system comprises a second data interface used for establishing data connection with a vehicle-mounted connector, and a second processing unit connected with the second data interface, wherein the second processing unit sends request information containing request data transmission types of different data sources and request information of data transmission contents of different data in the same data source to the vehicle-mounted connector through the second data interface, and receives electric quantity and data transmitted by the vehicle-mounted connector through the second data interface, the data source comprises an HMI system and a CAN network, the data transmission types comprise the HMI system and the CAN network system, so that the first processing unit of the vehicle-mounted connector analyzes the request information, selectively connects the HMI system and/or the CAN network with peripheral equipment in data mode according to the data request information of the data transmission types, controls the HMI system and the peripheral equipment to perform data interaction of HMI system data according to the request information of the data transmission contents, and/or controls the CAN network and the peripheral equipment to perform data interaction of the CAN network data.
10. The peripheral device of claim 9, wherein: and a second security module is arranged in the peripheral equipment and used for responding to the inquiry information sent by the connector after receiving the inquiry information.
11. The peripheral device of claim 10, wherein: the second security module is used for sending authentication information to the vehicle-mounted connector through the second data interface.
12. The peripheral device of claim 10, wherein: the peripheral equipment comprises a vehicle-mounted sound box, an air purifier, an intelligent sound box, a vehicle-mounted water cup, a vehicle-mounted coffee machine, a vehicle-mounted sterilizing lamp, a vehicle-mounted holographic projection, a vehicle-mounted refrigerator or a mobile phone.
13. A method of data transmission, characterized by: the method is based on the data transmission system of any one of claims 1 to 2, and comprises the following steps:
establishing data connection between a vehicle-mounted connector and peripheral equipment, and supplying power to the peripheral equipment through the vehicle-mounted connector, wherein the vehicle-mounted connector integrates data interfaces of a plurality of data sources;
the peripheral equipment sends request information containing request of data transmission types of different data sources and request information of data transmission contents of different data in the same data source to the vehicle-mounted connector;
the vehicle-mounted connector analyzes the data transmission type and the data transmission content;
the vehicle-mounted connector selectively controls a corresponding data source to carry out data connection with the peripheral equipment according to the transmission type, and transmits corresponding data in the data source to the peripheral equipment according to data transmission content;
the data source comprises an HMI system, a CAN network and a cloud server, the data transmission category comprises HMI system data, CAN network data and cloud communication data, the vehicle-mounted connector establishes data connection among the HMI system, the CAN network and/or the cloud server and the peripheral equipment according to the data transmission category, and transmits corresponding HMI system data in the HMI system to the peripheral equipment, transmits corresponding CAN network data in the CAN network to the peripheral equipment and/or transmits corresponding cloud communication data in the cloud server to the peripheral equipment according to request information of data transmission content.
14. A data transmission method of a vehicle-mounted connector is characterized in that: the vehicle-mounted connector based on any one of claims 3 to 8, the method comprising:
establishing data connection between the vehicle-mounted connector and peripheral equipment, and supplying power to the peripheral equipment;
receiving request information which is sent by peripheral equipment and contains data transmission types requesting different data sources and request information of data transmission contents of different data in the same data source;
analyzing the request information;
selectively controlling a corresponding data source to carry out data connection with the peripheral equipment according to the transmission type, and transmitting corresponding data in the data source to the peripheral equipment according to data transmission content;
the data source comprises an HMI system, a CAN network and a cloud server, the data transmission category comprises HMI system data, CAN network data and cloud communication data, the vehicle-mounted connector establishes data connection among the HMI system, the CAN network and/or the cloud server and the peripheral equipment according to the data transmission category, and transmits corresponding HMI system data in the HMI system to the peripheral equipment, transmits corresponding CAN network data in the CAN network to the peripheral equipment and/or transmits corresponding cloud communication data in the cloud server to the peripheral equipment according to request information of data transmission content.
15. The data transmission method of the vehicle-mounted connector according to claim 14, characterized in that: the method further comprises the steps of authenticating the peripheral equipment connected with the vehicle-mounted connector, and analyzing the received request information after the authentication is passed.
16. The data transmission method of the vehicle-mounted connector according to claim 14, characterized in that: and the vehicle-mounted connector acquires voltage information required by the peripheral equipment connected with the vehicle-mounted connector according to the received authentication information, and supplies power to the outside by using the voltage required by the peripheral equipment.
17. The data transmission method of the vehicle-mounted connector according to claim 14, characterized in that: when data transmission is carried out, the method further comprises the step that the vehicle-mounted connector encrypts output data.
18. A data transmission method of peripheral equipment is characterized in that: the method is based on the peripheral device of any of claims 9 to 12, the method comprising:
establishing data connection between peripheral equipment and a vehicle-mounted connector, and receiving power supply of the vehicle-mounted connector;
sending request information containing data transmission types of different data sources and request information of data transmission contents of different data in the same data source to the vehicle-mounted connector;
the data source comprises an HMI system and a CAN network, and the data interaction transmission category comprises the HMI system and the CAN network system; the first processing unit analyzes the request information, selectively connects the HMI system and/or the CAN network with the peripheral equipment in a data connection mode according to the data request information of the data transmission type, and controls the HMI system and the peripheral equipment to perform HMI system data interaction and/or controls the CAN network and the peripheral equipment to perform CAN network data interaction according to the request information of the data transmission content.
19. The data transmission method of the peripheral device according to claim 18, wherein: the method also includes receiving data transmissions from a plurality of data sources via the onboard connector.
20. The data transmission method of a peripheral device according to claim 18, wherein: the method further comprises the following steps: before the request information containing the data transmission type and the request information of the data transmission content are sent, the authentication information is sent to the vehicle-mounted connector connected with the peripheral equipment, or after the request of the authentication information sent by the vehicle-mounted connector is received, the request of the authentication information is responded.
21. An automobile, characterized in that: including the vehicular connector according to any one of claims 3 to 8.
CN202010506675.9A 2020-06-05 2020-06-05 Data transmission system, vehicle-mounted connector, peripheral equipment, automobile and data transmission method Active CN111669307B (en)

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