CN105975408A - Data transmission method and device - Google Patents

Abstract

The disclosure relates to a data transmission method and device. The data transmission method is used to implement data transmission between a mobile terminal and a PLC device and is applied to the mobile terminal; the data transmission method includes: obtaining a USB device list of the mobile terminal; detecting whether the USB device list is A PLC device containing a predetermined identity; after detecting the PLC device, obtain the communication port of the PLC device and the communication node of the communication port; open the USB device, and perform data transmission through the obtained communication node. The present disclosure can realize data transmission between a mobile terminal and a PLC device.

Description

Data transmission method and device

technical field

The present disclosure relates to the technical field of industrial control, in particular, to a data transmission method and a data transmission device for realizing data transmission between a mobile terminal and a PLC device.

Background technique

With the development of industrial control technology, PLC (Programmable Logic Controller, Programmable Logic Controller) devices play an increasingly important role in various fields and are used more and more widely. PLC equipment is a kind of user-oriented instructions such as logical operation, sequence control, timing, counting and arithmetic operation, etc., which use programmable memory through its internal stored program data, and control various Type of machinery or production process.

In the prior art, in some schemes, it is necessary to install a specific driver on the PC terminal and require professional tools to be installed on the PC terminal to upload and download the program data of the PLC device. In another solution, the program data of the PLC device can be uploaded and downloaded through the VNC (Virtual Network Computer, virtual network computer) remote control software installed on the PC, but this solution also requires that the device that uploads or downloads the program data must have a network Features.

It can be seen from the above that uploading program data to PLC equipment or downloading program data from PLC equipment in the prior art requires a PC terminal on the one hand, which lacks portability. On the other hand, it needs to install specific drivers and configure professional tools, which is inconvenient to implement.

It should be noted that the information disclosed in the above background section is only for enhancing the understanding of the background of the present disclosure, and therefore may include information that does not constitute the prior art known to those of ordinary skill in the art.

Contents of the invention

The purpose of the present disclosure is to provide a data transmission method and a data transmission device for realizing data transmission between a mobile terminal and a PLC device, and then at least to a certain extent overcome one or more problems caused by limitations and defects of related technologies question.

Other features and advantages of the present disclosure will become apparent from the following detailed description, or in part, be learned by practice of the present disclosure.

According to the first aspect of the embodiments of the present disclosure, a data transmission method is provided, which is used to implement data transmission between a mobile terminal and a PLC device and is applied to the mobile terminal; the data transmission method includes:

Obtain a USB device list of the mobile terminal;

Detecting whether a PLC device with a predetermined identity is included in the USB device list;

Obtaining the communication port of the PLC device and obtaining the communication node of the communication port after the PLC device is detected;

Turn on the USB device, and perform data transmission through the obtained communication node.

In an exemplary embodiment of the present disclosure, the data transmission method further includes:

receiving a transmission mode selection command and entering a data download mode or a data upload mode according to the transmission mode selection command;

After entering the data download mode, obtain the target file path on the mobile terminal, and download the data to be transmitted in the PLC device to the target file path through the obtained communication node;

After entering the data upload mode, obtain the data to be transmitted on the mobile terminal, and upload the data to be transmitted by the mobile terminal to the PLC device through the obtained communication node.

In an exemplary embodiment of the present disclosure, the mobile terminal is communicatively connected to the PLC device through a USB data line and an OTG data line.

According to the second aspect of the embodiments of the present disclosure, a data transmission method is provided, which is used to implement data transmission between a mobile terminal and a PLC device and is applied to the mobile terminal; the data transmission method includes:

Create a DatagramSocket instance representing the Ethernet communication protocol socket according to a port number of the mobile terminal;

Create an OutbroadcastAddr instance according to the target IP address to broadcast the address to the PLC device;

Create a DatagramPacket instance, and send or receive data from the DatagramSocket instance through the DatagramPacket instance.

In an exemplary embodiment of the present disclosure, the data transmission method further includes:

receiving a transmission mode selection command and entering a data download mode or a data upload mode according to the transmission mode selection command;

After entering the data download mode, obtain the target file path on the mobile terminal, receive the data to be transmitted from the DatagramSocket instance through the DatagramPacket instance and save it to the target file path;

After entering the data upload mode, obtain the data to be transmitted on the mobile terminal, receive and send the data to be transmitted from the mobile terminal to the PLC device through the DatagramPacket instance from the DatagramSocket instance.

In an exemplary embodiment of the present disclosure, the mobile terminal is communicatively connected to the PLC device through an OTG data line, an Ethernet interface, and a network cable.

According to a third aspect of an embodiment of the present disclosure, a data transmission method is provided for implementing data transmission between a mobile terminal and a PLC device and applied to the mobile terminal; the data transmission method includes:

Judging data transmission via USB communication or data transmission via Ethernet;

If it is judged that the data transmission is carried out by means of USB communication, then execute the data transmission method described in the first aspect above;

If it is determined that the data transmission is performed through the Ethernet communication mode, then execute the data transmission method described in the second aspect above.

In an exemplary embodiment of the present disclosure, the data transmission method further includes:

A communication mode selection instruction is received, and according to the communication mode selection instruction, it is determined whether data transmission is performed through USB communication mode or data transmission is performed through Ethernet mode.

According to a fourth aspect of the embodiments of the present disclosure, a data transmission device is provided, which is used to implement data transmission between a mobile terminal and a PLC device and is applied to the mobile terminal; the data transmission device includes:

a list obtaining unit, configured to obtain a list of USB devices of the mobile terminal;

A device detection unit, configured to detect whether a PLC device with a predetermined identity is included in the USB device list;

a communication detection unit, configured to obtain the communication port of the PLC device and the communication node of the communication port after the PLC device is detected;

The data transmission unit is configured to open the USB device and perform data transmission through the obtained communication node.

In an exemplary embodiment of the present disclosure, the data transmission device further includes:

A transmission mode acquisition unit, configured to receive a transmission mode selection instruction and enter a data download mode or a data upload mode according to the transmission mode selection instruction;

After entering the data download mode, the data transmission unit obtains the target file path on the mobile terminal, and downloads the data to be transmitted in the PLC device to the target file path through the acquired communication node;

After entering the data upload mode, the data transmission unit obtains the data to be transmitted on the mobile terminal, and uploads the data to be transmitted by the mobile terminal to the PLC device through the obtained communication node.

In an exemplary embodiment of the present disclosure, the mobile terminal is communicatively connected to the PLC device through a USB data line and an OTG data line.

According to a fifth aspect of an embodiment of the present disclosure, a data transmission device is provided, which is used to implement data transmission between a mobile terminal and a PLC device and is applied to the mobile terminal; the data transmission device includes:

A socket creation unit is used to create a DatagramSocket instance representing the Ethernet communication protocol socket according to a port number of the mobile terminal;

The address broadcast unit is used to create an OutbroadcastAddr instance according to the target IP address to broadcast the address to the PLC device;

The data transmission unit is configured to create a DatagramPacket instance, and send or receive data from the DatagramSocket instance through the DatagramPacket instance.

In an exemplary embodiment of the present disclosure, the data transmission device further includes:

A transmission mode acquisition unit, configured to receive a transmission mode selection instruction and enter a data download mode or a data upload mode according to the transmission mode selection instruction;

After entering the data download mode, the data transmission unit obtains the target file path on the mobile terminal, receives the data to be transmitted from the DatagramSocket instance through the DatagramPacket instance and saves it to the target file path;

After entering the data upload mode, the data transmission unit acquires the data to be transmitted on the mobile terminal, receives and sends the data to be transmitted from the mobile terminal to the PLC through the DatagramPacket instance from the DatagramSocket instance equipment.

In an exemplary embodiment of the present disclosure, the mobile terminal is communicatively connected to the PLC device through an OTG data line, an Ethernet interface, and a network cable.

According to a sixth aspect of the embodiments of the present disclosure, a data transmission device is provided, which is used to implement data transmission between a mobile terminal and a PLC device and is applied to the mobile terminal; the data transmission device includes:

A communication mode judging unit for judging data transmission via USB communication mode or data transmission via Ethernet mode;

If it is judged that the data transmission is performed through the USB communication method, then the data transmission is performed through the data transmission device described in the fourth aspect above;

If it is judged that the data transmission is performed through the Ethernet communication method, then the data transmission is performed through the data transmission device described in the fifth aspect above.

In an exemplary embodiment of the present disclosure, the data transmission device further includes:

a communication mode acquisition unit, configured to receive a communication mode selection instruction;

The communication mode judging unit judges data transmission via USB communication mode or data transmission via Ethernet mode according to the communication mode selection instruction.

The technical solution in an embodiment of the present disclosure can realize data transmission between a mobile terminal and a PLC device. Compared with the existing technology, on the one hand, no PC terminal is required, and the portability of the mobile terminal can make the data transmission of the PLC device more convenient; on the other hand, there is no need to install specific drivers and configure professional tools, which is convenient for implementation; and On the one hand, there is no need to use VNC-like remote control software, so the mobile terminal is not required to have an Ethernet function, which improves the scope of application of the data transmission method of the PLC device; and because it communicates through wired USB or Ethernet, It can better guarantee the efficiency and reliability of communication.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present disclosure.

Description of drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the disclosure and together with the description serve to explain the principles of the disclosure. Apparently, the drawings in the following description are only some embodiments of the present disclosure, and those skilled in the art can obtain other drawings according to these drawings without creative efforts.

Fig. 1 shows a schematic diagram of a connection manner between a mobile terminal and a PLC device in an exemplary embodiment of the present disclosure.

Fig. 2 shows a schematic flowchart of a data transmission method in an exemplary embodiment of the present disclosure.

Fig. 3 shows a schematic flowchart of a data transmission method in an exemplary embodiment of the present disclosure.

Fig. 4 shows a schematic flowchart of a data transmission method in an exemplary embodiment of the present disclosure.

Fig. 5 shows a schematic diagram of a connection manner between a mobile terminal and a PLC device in an exemplary embodiment of the present disclosure.

Fig. 6 shows a schematic flowchart of a data transmission method in an exemplary embodiment of the present disclosure.

Fig. 7 shows a schematic flowchart of a data transmission method in an exemplary embodiment of the present disclosure.

Fig. 8 shows a schematic flowchart of a data transmission method in an exemplary embodiment of the present disclosure.

Fig. 9 shows a schematic flowchart of a data transmission method in an exemplary embodiment of the present disclosure.

Fig. 10 shows a schematic flowchart of a data transmission method in an exemplary embodiment of the present disclosure.

Fig. 11 shows a schematic block diagram of a data transmission device in an exemplary embodiment of the present disclosure.

Fig. 12 shows a schematic block diagram of a data transmission device in an exemplary embodiment of the present disclosure.

Fig. 13 shows a schematic block diagram of a data transmission device in an exemplary embodiment of the present disclosure.

Fig. 14 shows a schematic block diagram of a mobile terminal applying the above data transmission method or data transmission device in an exemplary embodiment of the present disclosure.

detailed description

Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete and will fully convey the concept of example embodiments to those skilled in the art. The described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. In the following description, numerous specific details are provided in order to give a thorough understanding of embodiments of the present disclosure. However, those skilled in the art will appreciate that the technical solutions of the present disclosure may be practiced without one or more of the specific details being omitted, or other methods, components, devices, steps, etc. may be adopted. In other instances, well-known technical solutions have not been shown or described in detail to avoid obscuring aspects of the present disclosure.

Furthermore, the drawings are merely schematic illustrations of the present disclosure and are not necessarily drawn to scale. The same reference numerals in the drawings denote the same or similar parts, and thus repeated descriptions thereof will be omitted. Some of the block diagrams shown in the drawings are functional entities and do not necessarily correspond to physically or logically separate entities. These functional entities may be implemented in software, or in one or more hardware modules or integrated circuits, or in different network and/or processor means and/or microcontroller means.

In this exemplary embodiment, a data transmission method is firstly provided, which can be used to implement data transmission between a mobile terminal and a PLC device and is applied to the mobile terminal. In this example implementation manner, the mobile terminal may be, for example, a mobile phone, a tablet computer, and a PDA. The data transmission method in this example embodiment can be realized by an application program (APP) installed on the mobile terminal.

Referring to FIG. 1 , in this exemplary embodiment, the mobile terminal and the PLC device may be connected through a USB data line and an OTG data line. Since the existing PLC equipment uses wired USB transmission as the most important transmission method, and the mobile terminal usually also has a USB interface, the communication connection between the two can be realized through the USB data line and the OTG data line.

In this example implementation manner, a mobile phone with an Android operating system will be taken as an example for detailed description. Referring to Fig. 2, the data transmission method may include the following steps:

S11. Obtain a USB device list of the mobile terminal.

Referring to Fig. 3, after the mobile terminal starts the application program, the UsbManager object will be declared first. The UsbManager object is responsible for managing the class of USB devices, and an instance of this object can be obtained through the corresponding code. In this class, the USB device list of the mobile terminal can be obtained through, for example, "getDeviceList()".

S12. Detect whether the USB device list contains a PLC device with a predetermined identity.

The identity mark of the PLC device described in this example embodiment can include a supplier ID (VID) and a product identification code (PID); PID to distinguish different devices. Through the iterator DeviceIterator, the identities of the devices in the USB device list can be sequentially and cyclically compared. When a PLC device containing a predetermined identity is found, it can be connected to the PLC device, but when no PLC device containing a predetermined identity is found , it returns that there is no device to connect to.

S13. Obtain a communication port of the PLC device and a communication node of the communication port after the PLC device is detected.

The PLC device includes one or more communication ports (Interface), and each communication port includes one or more communication nodes (Endpoint) for data transmission with the mobile terminal. In this example implementation, for example, the number of communication ports of the PLC device can be returned through "getInterfaceCount()", and one communication port of the PLC device can be obtained through "getInterface(int index)", and the number of communication ports of the PLC device can be obtained through "getEndpointCount()" Get the number of nodes of this communication port, and get a communication node of this communication port through "getEndpoint(int index)". In addition, the general communication node Endpoint is divided into InEndpoint and OutEndpoint, and which communication node to obtain can be determined according to specific devices.

S14. Turn on the USB device, and perform data transmission through the obtained communication node.

Continue referring to shown in Fig. 3, judge whether to have the authority of accessing described PLC device, for example, can judge whether above-mentioned application program has the authority of accessing described PCL device by "hasPermission(UsbDevice device)"; When accessing the access authority, it is necessary to acquire the authority to access the PLC device. When it is judged that there is an access right, the PLC device can be opened by, for example, "openDevice (UsbDevice device)", so as to send data to the PLC device or receive data from the PLC device. In this exemplary embodiment, data transmission can be performed by means of BulkTransfer which is convenient for large amount of data transmission.

Further, the data transmission method described in this example embodiment may also include:

S10. Receive a transmission mode selection instruction and enter a data download mode or a data upload mode according to the transmission mode selection instruction. For example, as shown in FIG. 4 , the above-mentioned application program installed on the mobile terminal can be used for the user to choose to perform data upload or data download.

After entering the data download mode, the user can set the path (i.e. the following target file path) to be saved from the program data downloaded from the PLC device, and the application program can also judge whether the target file path already exists or not. The file with the same name as the program data to be transferred. After judging that the target file path does not have a file with the same name as the program data to be transmitted, establish a communication connection between the mobile terminal and the PLC device through the above steps S11 to S13, and obtain the target file path, According to the step S14 and the upload/download protocol of the packaged PLC device, the communication node obtained through the Android USBBulkTransfer method obtains the data to be transmitted from the PLC device, and downloads and saves it to the target file path.

In addition, continuing to refer to FIG. 4 , before downloading the program data to be transmitted, it is also possible to determine whether the model connected by the user is wrong, and only perform data transmission when it is determined that the model connected by the user is correct. After the data transmission is completed, the user may be reminded that the program data to be transmitted has been transmitted through sound or text.

After entering the data upload mode, the user can select the storage path of the data to be transmitted on the mobile terminal, and the application program can also check the data to be transmitted on the mobile terminal to determine whether the data to be transmitted be corrupted and prevent incomplete data transmission. After judging that the data to be transmitted has passed the verification, establish the communication connection between the mobile terminal and the PLC device through the above steps S11 to S13, and obtain the storage path of the data to be transmitted, from the data to be transmitted The storage path obtains the data to be transmitted, and according to the step S14 and the upload/download protocol of the packaged PLC device, uploads to the PLC device through the obtained communication node according to the Android USB Bulk method. When there are multiple pieces of data to be transmitted in the storage path of the data to be transmitted, in this exemplary embodiment, the above transmission process may be cycled to transmit data one by one.

In addition, continuing to refer to FIG. 4 , before uploading the program data to be transmitted, it is also possible to determine whether the model connected by the user is wrong, and only when it is judged that the model connected by the user is correct, the data transmission is performed. After the data transmission is completed, the user may be reminded that the program data to be transmitted has been transmitted through sound or text.

Referring to FIG. 5 , in this example implementation, the mobile terminal and the PLC device may be connected through an OTG data cable, an Ethernet (Ethernet) interface, and a network cable. Since the existing PLC equipment generally has an Ethernet interface, and the mobile terminal usually has a USB interface, the communication connection between the two can be realized through an OTG data line, an Ethernet interface (such as an RJ45 interface) and a network cable (such as an RJ45 line).

Further, another data transmission manner is provided in this example implementation manner. In this example implementation manner, a mobile phone with an Android operating system will be taken as an example for detailed description. Referring to Fig. 6, the data transmission method may include the following steps:

S21. Create a DatagramSocket instance representing an Ethernet communication protocol socket according to a port number of the mobile terminal.

As shown in FIG. 7 , first add the API library (Library) of the Android operating system, declare the variables required by the Ethernet communication protocol socket Socket and declare the threads used by the application program and start the threads. After the thread is started, a DatagramSocket instance representing the Ethernet communication protocol socket is created according to a port number of the mobile terminal. For example, a DatagramSocket instance may be created through "DatagramSocket(int prot)" and bound to the default IP address of the mobile terminal and a specified port number; or, it may be created through "DatagramSocket(int port, InetAddress laddr)" A DatagramSocket instance is bound to the specified IP address, specified port number, etc.

S22. Create an OutbroadcastAddr instance according to the target IP address to perform address broadcast to the PLC device.

In this example embodiment, before the mobile terminal and the PLC device perform data transmission, no communication connection needs to be established, and the application program needs to create an OutbroadcastAddr instance to broadcast the address to the PLC device, so that when data transmission is performed Data is received or sent between the PLC device and the mobile terminal.

S23. Create a DatagramPacket instance.

The DatagramPacket instance represents the data packet, and the data received and sent by the DatagramSocket instance is completed through the DatagramPacket instance. For example, in this exemplary embodiment, a DatagramPacket instance can be created through constructors such as "DatagramPacket(byte[]buf, int length, InetAddress addr, int port)", and the byte array and length of the received data can be given. After the DatagramPacket instance is created, the permission of the Ethernet connection can be opened, a handshake command can be performed, and a communication connection between the mobile terminal and the PLC device can be established after the handshake is successful.

S24. Send or receive data from the DatagramSocket instance through the DatagramPacket instance.

After creating the DatagramPacket instance, in this example implementation, for example, the data packet can be received from the DatagramSocket instance through "receive(DatagramPacket p)"; packets etc.

Further, the data transmission method described in this example embodiment may also include:

S20. Receive a transmission mode selection instruction and enter a data download mode or a data upload mode according to the transmission mode selection instruction. For example, as shown in FIG. 8 , the above-mentioned application program installed on the mobile terminal can be used for the user to choose to perform data upload or data download.

After entering the data download mode, the user can set the path (i.e. the following target file path) to be saved from the program data downloaded from the PLC device, and the application program can also judge whether the target file path already exists or not. The file with the same name as the program data to be transferred. After judging that the target file path does not have a file with the same name as the program data to be transmitted, establish a communication connection between the mobile terminal and the PLC device through the above steps S21 to S23, and obtain the target file path, According to the step S24 and the upload/download protocol of the packaged PLC device, the data to be transmitted is obtained from the PLC device through the DatagramPacket instance and the DatagramSocket instance according to the Android Ethernet flow mode, and downloaded and saved to the target file path.

In addition, as shown in FIG. 8 , before downloading the program data to be transmitted, it is also possible to determine whether the model connected by the user is wrong, and only when it is determined that the model connected by the user is correct, the data transmission is performed. After the data transmission is completed, the user may be reminded that the program data to be transmitted has been transmitted through sound or text.

After entering the data upload mode, the user can select the storage path of the data to be transmitted on the mobile terminal, and the application program can also check the data to be transmitted on the mobile terminal to determine whether the data to be transmitted be corrupted and prevent incomplete data transmission. After judging that the data to be transmitted has passed the verification, establish the communication connection between the mobile terminal and the PLC device through the above steps S21 to S23, and obtain the storage path of the data to be transmitted, from the data to be transmitted The storage path obtains the data to be transmitted, and according to the step S24 and the upload/download protocol of the packaged PLC device, uploads to the PLC device through the DatagramPacket instance and the DatagramSocket instance according to the AndroidEthernet flow mode. When there are multiple pieces of data to be transmitted in the storage path of the data to be transmitted, in this exemplary embodiment, the above transmission process may be cycled to transmit data one by one.

In addition, as shown in FIG. 8 , before uploading the program data to be transmitted, it is also possible to determine whether the model connected by the user is wrong, and only when it is determined that the model connected by the user is correct, the data transmission is performed. After the data transmission is completed, the user may be reminded that the program data to be transmitted has been transmitted through sound or text.

Further, another data transmission manner is provided in this example embodiment, which is used to implement data transmission between the mobile terminal and the PLC device and is applied to the mobile terminal. Referring to what is shown in FIG. 9, the data transmission method may include:

S31. Determine whether data transmission is performed through USB communication mode or data transmission is performed through Ethernet mode.

For example, as shown in FIG. 10 , the above-mentioned application program installed in the mobile terminal can be used for the user to select data transmission through USB communication mode or data transmission through Ethernet mode, and the application program can judge accordingly Data transmission via USB communication or data transmission via Ethernet. However, in other exemplary embodiments of the present disclosure, the automatic judgment may also be performed by an application program, which is not specifically limited in this exemplary embodiment. In addition, in FIG. 10, the communication mode is selected first, and then the data transmission mode is selected; however, in other exemplary embodiments of the present disclosure, the data transmission mode may be selected first, and then the communication mode is selected, which also belongs to the present disclosure scope of protection.

S32. If it is determined that the data transmission is performed through the USB communication method, execute the data transmission method described in FIGS. 2-4. Since the data transmission methods described in FIGS. 2 to 4 have been described in detail, they will not be repeated here.

S33. If it is determined that the data transmission is performed through the Ethernet communication mode, execute the data transmission method described in FIGS. 6-8. Since the data transmission methods described in FIGS. 6 to 8 have been described in detail, they will not be repeated here.

Through the steps S31 to S32, the data transmission method can be adapted to more requirements, so that the user can freely choose an available or convenient way for data transmission.

Further, this example embodiment also provides a data transmission device, which can be used to implement data transmission between a mobile terminal and a PLC device and is applied to the mobile terminal. Referring to FIG. 11 , the data transmission device 1 may include a list acquisition unit 11 , a device detection unit 12 , a communication detection unit 13 and a data transmission unit 14 . in:

The list acquiring unit 11 can be used to acquire the USB device list of the mobile terminal.

The device detection unit 12 may be used to detect whether the USB device list contains a PLC device with a predetermined identity.

The communication detection unit 13 may be configured to obtain the communication port of the PLC device and the communication node of the communication port after the PLC device is detected.

The data transmission unit 14 can be used to open the USB device, and perform data transmission through the obtained communication node.

Continuing to refer to what is shown in FIG. 11 , the data transmission device in this exemplary embodiment may further include a transmission mode acquisition unit 10 . in:

The transmission mode acquiring unit 10 may be configured to receive a transmission mode selection instruction and enter a data download mode or a data upload mode according to the transmission mode selection instruction.

After entering the data download mode, the data transmission unit 14 obtains the target file path on the mobile terminal, and downloads the data to be transmitted in the PLC device to the target file path through the acquired communication node .

After entering the data upload mode, the data transmission unit 14 acquires the data to be transmitted on the mobile terminal, and uploads the data to be transmitted by the mobile terminal to the PLC device through the obtained communication node.

In this exemplary embodiment, the mobile terminal and the PLC device may be communicatively connected via a USB data line and an OTG data line.

Further, another data transmission device is provided in this example embodiment, which can be used to implement data transmission between a mobile terminal and a PLC device and should be applicable to the mobile terminal. Referring to FIG. 12 , the data transmission device 2 may include a socket creation unit 21 , an address broadcast unit 22 and a data transmission unit 23 . in:

The socket creation unit 21 may be used to create a DatagramSocket instance representing a socket of the Ethernet communication protocol according to a port number of the mobile terminal.

The address broadcast unit 22 may be used to create an OutbroadcastAddr instance according to the target IP address to perform address broadcast to the PLC device.

The data transmission unit 23 may be used to create a DatagramPacket instance, and send or receive data from the DatagramSocket instance through the DatagramPacket instance.

Continuing to refer to what is shown in FIG. 12 , the data transmission device in this exemplary embodiment may further include a transmission mode acquisition unit 20 . in:

The transmission mode acquiring unit 20 may be configured to receive a transmission mode selection instruction and enter a data download mode or a data upload mode according to the transmission mode selection instruction.

After entering the data download mode, the data transmission unit 20 can obtain the target file path on the mobile terminal, and receive the data to be transmitted from the DatagramSocket instance through the DatagramPacket instance and save it to the target file path.

After entering the data upload mode, the data transmission unit 20 can obtain the data to be transmitted on the mobile terminal, and receive the data to be transmitted from the DatagramSocket instance through the DatagramPacket instance and send the data to be transmitted by the mobile terminal to The PLC device.

In this exemplary embodiment, the mobile terminal is connected to the PLC device through an OTG data cable, an Ethernet interface, and a network cable.

Further, another data transmission device is provided in this example embodiment, which can be used to implement data transmission between a mobile terminal and a PLC device and should be applicable to the mobile terminal. Referring to FIG. 13 , the data transmission device 3 in this exemplary embodiment may include a communication mode judging unit 31 and the data transmission device 1 shown in FIG. 11 and the data transmission device 2 shown in FIG. 12 . in:

The communication mode judging unit 31 can be used for judging whether data transmission is performed through USB communication mode or data transmission is performed through Ethernet mode. If it is determined that the data transmission is performed through the USB communication method, then the data transmission is performed through the data transmission device 1 in FIG. 11 . If it is judged that the data transmission is performed through the Ethernet communication method, the data transmission is performed through the data transmission device 2 in FIG. 12 .

Continuing to refer to FIG. 13 , in this exemplary embodiment, the data transmission device may further include a communication method acquiring unit 30 . in:

The communication mode acquisition unit 30 may be configured to receive a communication mode selection instruction. The communication mode judging unit 31 judges data transmission via USB communication mode or data transmission via Ethernet mode according to the communication mode selection instruction.

The specific details of each module/unit in the above data transmission device have been described in detail in the corresponding data transmission method, so details will not be repeated here.

It should be noted that, in the above exemplary embodiment, a mobile phone with an Android operating system is used as an example for illustration, but those skilled in the art can easily understand that the technical solution in this exemplary embodiment can also be applied to tablet computers, etc. Other mobile terminals are not limited to the Android operating system, for example, can also be applied to IOS or other operating systems. Moreover, in the above exemplary embodiments, the transmission of program data is taken as an example for illustration, but in other exemplary embodiments of the present disclosure, other data such as monitoring data may also be transmitted, which is not done in this exemplary embodiment. Special limited. In addition, in the above exemplary embodiments, the UDP communication method is taken as an example for illustration, but the data transmission methods of TCP, WIFI and other connection methods implemented based on the same inventive concept also belong to the protection scope of the present disclosure.

To sum up, the technical solution in this exemplary embodiment can realize data transmission between the mobile terminal and the PLC device. Compared with the existing technology, on the one hand, no PC terminal is required, and the portability of the mobile terminal can make the data transmission of the PLC device more convenient; on the other hand, there is no need to install specific drivers and configure professional tools, which is convenient for implementation; and On the one hand, there is no need to use VNC-like remote control software, so the mobile terminal is not required to have an Ethernet function, which improves the scope of application of the data transmission method of the PLC device; and because it communicates through wired USB or Ethernet, It can better guarantee the efficiency and reliability of communication.

It should be noted that although several modules or units of the device for action execution are mentioned in the above detailed description, this division is not mandatory. Actually, according to the embodiment of the present disclosure, the features and functions of two or more modules or units described above may be embodied in one module or unit. Conversely, the features and functions of one module or unit described above can be further divided to be embodied by a plurality of modules or units.

In addition, although steps of the methods of the present disclosure are depicted in the drawings in a particular order, there is no requirement or implication that the steps must be performed in that particular order, or that all illustrated steps must be performed to achieve the desired result. Additionally or alternatively, certain steps may be omitted, multiple steps may be combined into one step for execution, and/or one step may be decomposed into multiple steps for execution, etc.

Referring to Fig. 14, the mobile terminal 300 that applies above-mentioned data transmission scheme can comprise following one or more components: processing component 302, memory 304, power component 306, multimedia component 308, audio component 310, input/output (I/O) interface 312 , sensor component 314 , and communication component 316 .

The processing component 302 generally controls the overall operations of the mobile terminal 300, such as operations associated with display, phone calls, data communications, camera operations, and recording operations. The processing component 302 may include one or more processors 320 to execute instructions to complete all or part of the steps of the above method. Additionally, processing component 302 may include one or more modules that facilitate interaction between processing component 302 and other components. For example, processing component 302 may include a multimedia module to facilitate interaction between multimedia component 304 and processing component 302 .

The memory 304 is configured to store various types of data to support operations at the mobile terminal 300 . Examples of such data include instructions for any application or method operating on the mobile terminal 300, contact data, phonebook data, messages, pictures, videos, and the like. The memory 304 can be implemented by any type of volatile or non-volatile storage device or their combination, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable Programmable Read Only Memory (EPROM), Programmable Read Only Memory (PROM), Read Only Memory (ROM), Magnetic Memory, Flash Memory, Magnetic or Optical Disk.

The power supply component 306 provides power to various components of the mobile terminal 300 . Power components 306 may include a power management system, one or more power supplies, and other components associated with generating, managing, and distributing power for mobile terminal 300 .

The multimedia component 308 includes a screen providing an output interface between the mobile terminal 300 and the user. In some embodiments, the screen may include a liquid crystal display (LCD) and a touch panel (TP). If the screen includes a touch panel, the screen may be implemented as a touch screen to receive input signals from a user. The touch panel includes one or more touch sensors to sense touches, swipes, and gestures on the touch panel. The touch sensor may not only sense a boundary of a touch or swipe action, but also detect duration and pressure associated with the touch or swipe action. In some embodiments, the multimedia component 308 includes a front camera and/or a rear camera. When the mobile terminal 300 is in an operation mode, such as a shooting mode or a video mode, the front camera and/or the rear camera can receive external multimedia data. Each front camera and rear camera can be a fixed optical lens system or have focal length and optical zoom capability.

The audio component 310 is configured to output and/or input audio signals. For example, the audio component 310 includes a microphone (MIC), which is configured to receive an external audio signal when the mobile terminal 300 is in operation modes, such as a call mode, a recording mode and a voice recognition mode. Received audio signals may be further stored in memory 304 or sent via communication component 316 . In some embodiments, the audio component 310 also includes a speaker for outputting audio signals.

The I/O interface 312 provides an interface between the processing component 302 and a peripheral interface module, which may be a keyboard, a click wheel, a button, and the like. These buttons may include, but are not limited to: a home button, volume buttons, start button, and lock button.

The sensor component 314 includes one or more sensors for providing various aspects of status assessment for the mobile terminal 300 . For example, the sensor component 314 can detect the open/close state of the mobile terminal 300, the relative positioning of components, such as the display and the keypad of the mobile terminal 300, the sensor component 314 can also detect the mobile terminal 300 or a mobile terminal 300 Changes in the positions of components, presence or absence of user contact with the mobile terminal 300 , orientation or acceleration/deceleration of the mobile terminal 300 and temperature changes of the mobile terminal 300 . The sensor assembly 314 may include a proximity sensor configured to detect the presence of nearby objects in the absence of any physical contact. Sensor assembly 314 may also include an optical sensor, such as a CMOS or CCD image sensor, for use in imaging applications. In some embodiments, the sensor component 314 may also include an acceleration sensor, a gyroscope sensor, a magnetic sensor, a pressure sensor or a temperature sensor.

The communication component 316 is configured to facilitate wired or wireless communication between the mobile terminal 300 and other devices. The mobile terminal 300 can access a wireless network based on communication standards, such as WiFi, 2G or 3G, or a combination thereof. In an exemplary embodiment, the communication component 316 receives broadcast signals or broadcast related information from an external broadcast management system via a broadcast channel. In an exemplary embodiment, the communication component 316 also includes a near field communication (NFC) module to facilitate short-range communication. For example, the NFC module may be implemented based on Radio Frequency Identification (RFID) technology, Infrared Data Association (IrDA) technology, Ultra Wide Band (UWB) technology, Bluetooth (BT) technology and other technologies.

In an exemplary embodiment, the mobile terminal 300 may be powered by one or more Application Specific Integrated Circuits (ASICs), Digital Signal Processors (DSPs), Digital Signal Processing Devices (DSPDs), Programmable Logic Devices (PLDs), Field Programmable A programmable gate array (FPGA), controller, microcontroller, microprocessor or other electronic component implementation for performing the methods described above.

In an exemplary embodiment, there is also provided a non-transitory computer-readable storage medium including instructions, such as a memory 304 including instructions, and the above instructions can be executed by the processor 320 of the mobile terminal 300 to complete the steps in this exemplary embodiment. The above-mentioned technical scheme. For example, the non-transitory computer readable storage medium may be ROM, random access memory (RAM), CD-ROM, magnetic tape, floppy disk, optical data storage device, and the like.

Other embodiments of the present disclosure will be readily apparent to those skilled in the art from consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any modification, use or adaptation of the present disclosure, and these modifications, uses or adaptations follow the general principles of the present disclosure and include common knowledge or conventional technical means in the technical field not disclosed in the present disclosure . The specification and examples are to be considered exemplary only, with the true scope and spirit of the disclosure indicated by the appended claims.

Claims (16)

1. a data transmission method, is characterized in that, is used for realizing the data transmission between mobile terminal and PLC equipment and is applied to described mobile terminal; Described data transmission method comprises: Obtain a USB device list of the mobile terminal; Detecting whether a PLC device with a predetermined identity is included in the USB device list; Obtaining the communication port of the PLC device and obtaining the communication node of the communication port after the PLC device is detected; Turn on the USB device, and perform data transmission through the obtained communication node. 2. The data transmission method according to claim 1, wherein the data transmission method further comprises: receiving a transmission mode selection command and entering a data download mode or a data upload mode according to the transmission mode selection command; After entering the data download mode, obtain the target file path on the mobile terminal, and download the data to be transmitted in the PLC device to the target file path through the obtained communication node; After entering the data upload mode, obtain the data to be transmitted on the mobile terminal, and upload the data to be transmitted by the mobile terminal to the PLC device through the obtained communication node. 3. The data transmission method according to claim 1 or 2, characterized in that, the mobile terminal and the PLC device are communicatively connected via a USB data line and an OTG data line. 4. A data transmission method, characterized in that, is used to realize data transmission between a mobile terminal and a PLC device and is applied to the mobile terminal; the data transmission method comprises: Create a DatagramSocket instance representing the Ethernet communication protocol socket according to a port number of the mobile terminal; Create an OutbroadcastAddr instance according to the target IP address to broadcast the address to the PLC device; Create a DatagramPacket instance, and send or receive data from the DatagramSocket instance through the DatagramPacket instance. 5. The data transmission method according to claim 4, wherein the data transmission method further comprises: receiving a transmission mode selection command and entering a data download mode or a data upload mode according to the transmission mode selection command; After entering the data download mode, obtain the target file path on the mobile terminal, receive the data to be transmitted from the DatagramSocket instance through the DatagramPacket instance and save it to the target file path; After entering the data upload mode, obtain the data to be transmitted on the mobile terminal, receive and send the data to be transmitted from the mobile terminal to the PLC device through the DatagramPacket instance from the DatagramSocket instance. 6. The data transmission method according to claim 4 or 5, wherein the mobile terminal is connected to the PLC device through an OTG data line, an Ethernet interface and a network cable for communication. 7. A data transmission method, characterized in that, is used to realize data transmission between a mobile terminal and a PLC device and is applied to the mobile terminal; the data transmission method comprises: Judging data transmission via USB communication or data transmission via Ethernet; If it is judged that data transmission is carried out by means of USB communication, then perform the data transmission method according to any one of claims 1 to 3; If it is determined that the data transmission is performed through the Ethernet communication mode, the data transmission method according to any one of claims 4-6 is executed. 8. The data transmission method according to claim 7, wherein the data transmission method further comprises: A communication mode selection instruction is received, and according to the communication mode selection instruction, it is determined whether data transmission is performed through USB communication mode or data transmission is performed through Ethernet mode. 9. A data transmission device, characterized in that, is used to realize data transmission between a mobile terminal and a PLC device and is applied to the mobile terminal; the data transmission device includes: a list obtaining unit, configured to obtain a list of USB devices of the mobile terminal; A device detection unit, configured to detect whether a PLC device with a predetermined identity is included in the USB device list; a communication detection unit, configured to obtain the communication port of the PLC device and the communication node of the communication port after the PLC device is detected; The data transmission unit is configured to open the USB device and perform data transmission through the obtained communication node. 10. The data transmission device according to claim 9, wherein the data transmission device further comprises: A transmission mode acquisition unit, configured to receive a transmission mode selection instruction and enter a data download mode or a data upload mode according to the transmission mode selection instruction; After entering the data download mode, the data transmission unit obtains the target file path on the mobile terminal, and downloads the data to be transmitted in the PLC device to the target file path through the obtained communication node; After entering the data upload mode, the data transmission unit obtains the data to be transmitted on the mobile terminal, and uploads the data to be transmitted by the mobile terminal to the PLC device through the obtained communication node. 11. The data transmission device according to claim 9 or 10, characterized in that, the mobile terminal and the PLC device are communicatively connected via a USB data line and an OTG data line. 12. A data transmission device, characterized in that, is used to realize data transmission between a mobile terminal and a PLC device and is applied to the mobile terminal; the data transmission device includes: A socket creation unit is used to create a DatagramSocket instance representing the Ethernet communication protocol socket according to a port number of the mobile terminal; The address broadcast unit is used to create an OutbroadcastAddr instance according to the target IP address to broadcast the address to the PLC device; The data transmission unit is configured to create a DatagramPacket instance, and send or receive data from the DatagramSocket instance through the DatagramPacket instance. 13. The data transmission device according to claim 11 or 12, wherein the data transmission device further comprises: A transmission mode acquisition unit, configured to receive a transmission mode selection instruction and enter a data download mode or a data upload mode according to the transmission mode selection instruction; After entering the data download mode, the data transmission unit obtains the target file path on the mobile terminal, receives the data to be transmitted from the DatagramSocket instance through the DatagramPacket instance and saves it to the target file path; After entering the data upload mode, the data transmission unit acquires the data to be transmitted on the mobile terminal, receives and sends the data to be transmitted from the mobile terminal to the PLC through the DatagramPacket instance from the DatagramSocket instance equipment. 14. The data transmission device according to claim 12 or 13, wherein the mobile terminal is connected to the PLC device through an OTG data line, an Ethernet interface and a network cable. 15. A data transmission device, characterized in that, is used to realize data transmission between a mobile terminal and a PLC device and is applied to the mobile terminal; the data transmission device includes: A communication mode judging unit for judging data transmission via USB communication mode or data transmission via Ethernet mode; If it is judged that the data transmission is performed by means of USB communication, then the data transmission is performed by the data transmission device described in any one of claims 9 to 11; If it is judged that the data transmission is performed by means of Ethernet communication, the data transmission is performed by the data transmission device described in any one of claims 12-14. 16. The data transmission device according to claim 15, wherein the data transmission device further comprises: a communication mode acquisition unit, configured to receive a communication mode selection instruction; The communication mode judging unit judges data transmission via USB communication mode or data transmission via Ethernet mode according to the communication mode selection instruction.