WO2021007756A1

WO2021007756A1 - Device update method and system, and first internet of things device and computer-readable medium

Info

Publication number: WO2021007756A1
Application number: PCT/CN2019/096044
Authority: WO
Inventors: 藏迪
Original assignee: 西门子股份公司; 西门子（中国）有限公司
Priority date: 2019-07-15
Filing date: 2019-07-15
Publication date: 2021-01-21
Also published as: CN113826357A

Abstract

A device update method and system, and a first Internet of things device and a computer-readable medium. The device update method is applied to the first Internet of things device, and comprises: receiving a first update data packet (401); detecting whether the first update data packet comprises a target update data item (402); using the target update data item to update the first Internet of things device (403); deleting the target update data item from the first update data packet to obtain a second update data packet (404); and sending the second update data packet to a second Internet of things device (405). The traffic load of an update server can be reduced when an Internet of things device is updated.

Description

Device update method, system, first internet of things device and computer readable medium

Technical field

The present invention relates to the field of communication technology, and in particular to a device update method and system, a first Internet of Things device and a computer-readable medium.

Background technique

With the continuous development and progress of the Internet of Things technology, various types of Internet of Things devices are widely used in industrial production, such as programmable logic controllers (PLC), conveyor belts, sensors, etc. In the process of using IoT devices, it is often necessary to update IoT devices. Updating IoT devices mainly includes updating the firmware of IoT devices or upgrading the software running on IoT devices. Multiple IoT devices located in the same network topology are updated.

At present, when updating IoT devices, an update data package including multiple update data items is prepared in advance, and the update server sends the update data packet to each IoT device in the form of broadcast, and the IoT device receives the update data After the package, select the matching update data item from the update data package to upgrade the firmware or software.

Regarding the current method of updating IoT devices, since the update data package includes multiple update data items used to update different IoT devices, the update data package usually has a large amount of data, and the update server needs to broadcast In the form of sending update data packets to various IoT devices, the traffic load of the update server increases.

Summary of the invention

In view of this, the device update method, system, first Internet of Things device and computer readable medium provided by the present invention can reduce the traffic load of the update server when updating the Internet of Things device.

In the first aspect, an embodiment of the present invention provides a device update method, including:

A first Internet of Things device located in a network topology receives a first update data packet, wherein the first update data packet includes at least one update data item;

Detecting whether the first update data package includes a target update data item, where the target update data item is used to update the firmware of the first Internet of Things device or the software running on it;

If the first update data package includes the target update data item, use the target update data item to update the first Internet of Things device, and update the first Internet of Things device from the first update data package The target update data item is deleted, and the second update data package is obtained;

If the second update data packet includes at least one of the update data items, it is determined whether there is an IoT device that needs to be updated in the network topology, and if there is an IoT device that needs to be updated, then

It is determined that the next Internet of Things device that needs to be updated is the second Internet of Things device, and the second update data packet is sent to the second Internet of Things device.

In the second aspect, an embodiment of the present invention also provides a first Internet of Things device, including:

A data packet receiving module for receiving a first update data packet, wherein the first update data packet includes at least one update data item;

A data packet detection module is used to detect whether the first update data packet received by the data packet receiving module includes a target update data item, wherein the target update data item is used to update the first object Update the firmware of networked devices or the software running on them;

A device update module, configured to use the target update data item to update the first Internet of Things device when the data packet detection module determines that the first update data package includes the target update data item;

A data package update module for deleting the target update data item from the first update data package after the device update module updates the first Internet of Things device to obtain a second update data package ；

A first data packet sending module, configured to include at least one of the new data items in the second update data packet obtained by the data packet update module, and there are IoT devices that need to be updated in the network topology In the case of, determine the next IoT device that needs to be updated as the second IoT device, and send the second update data packet to the second IoT device.

In a third aspect, an embodiment of the present invention also provides another first Internet of Things device, including: at least one memory and at least one processor;

The at least one memory is used to store a machine-readable program;

The at least one processor is configured to invoke the machine-readable program to execute the method provided in the first aspect.

In a fourth aspect, an embodiment of the present invention also provides a device update system, including: at least two first Internet of Things devices provided in the second aspect or the third aspect and an update server;

The at least two first Internet of Things devices are connected in sequence in the same network topology, and the update server is connected to one of the first Internet of Things devices located at an end;

The update server is configured to send an update data packet including at least one update data item to the connected first Internet of Things device.

In a fifth aspect, an embodiment of the present invention also provides a computer-readable medium having computer instructions stored on the computer-readable medium. When the computer instructions are executed by a processor, the processor executes the first The method provided by the aspect.

It can be seen from the above technical solution that after the first Internet of Things device receives the first update data packet, it detects whether the first update data packet includes the firmware for performing the firmware of the first Internet of Things device or the software running on the first Internet of Things device. The updated target update data item, if there is a target update data item in the first update data package, use the target update data item to update the first IoT device, and after the update is completed, the target update data item is changed from the first update data Delete from the package to obtain the second update data package, and then if the second update data package includes update data items and there are IoT devices that need to be updated in the network topology, determine the next IoT device that needs to be updated Is the second Internet of Things device, and sends the second update data packet to the second Internet of Things device. It can be seen that the update data package that includes multiple update data items can be transmitted sequentially among the various IoT devices, and the IoT device that receives the update data packet can use the corresponding update data item in the update data package to update, in After the update is complete, delete the used update data items from the update data package, and then transmit the update data package to the next IoT device, so that each IoT device that needs to be updated can be updated with one update data package. The update server only needs to send an update data packet to one IoT device once. Since the redundant load of the update server is reduced, the traffic load of the update server in the process of updating the IoT device can be reduced.

In the first possible implementation manner, in combination with any of the above aspects, after detecting whether the first update data packet includes the target update data item, the method further includes:

If the target update data item is not included in the first update data packet, it is determined whether there are IoT devices that need to be updated in the network topology, and if there are IoT devices that need to be updated, then

The next IoT device that needs to be updated is determined as the third IoT device, and the first update data packet is sent to the third IoT device.

In the embodiment of the present invention, if there is no target update data item in the first update data packet, and there are still IoT devices that need to be updated in the network topology, the first update data packet is sent to the next one that needs to be updated. The updated IoT device ensures that the update data packet can be transmitted to the IoT device that needs to be updated, thereby ensuring that the IoT device update process may proceed smoothly.

In the second possible implementation manner, in combination with any of the above aspects or the first possible implementation manner, when detecting whether the first update data packet includes the target update data item, it can be implemented in the following manner:

For each of the update data items included in the first update data packet, if the target device address included in the update data item is the same as the device address of the first Internet of Things device, then the update data item is determined Update the data item for the target.

In the embodiment of the present invention, the first update data packet includes at least one update data item, and each update data item includes a target device address. The target device address is used to identify the Internet of Things where the update data item can be updated. equipment. For each update data item, after comparing the target device address included in the update data item with the device address of the first Internet of Things device, if the target device address included in the update data item is compared with the device address of the first Internet of Things device The address is the same, indicating that the update data item can be used to update the first Internet of Things device, and then the update data item is determined as the target update data item. Based on the target device address included in the update data item, distinguish whether each update data item is a target update data item that can update the first Internet of Things device, ensuring that it can be accurately determined whether the first update data package includes target update data Item, and then the first Internet of Things device can accurately select the method for processing the first update data packet to ensure that the update process of the Internet of Things device can proceed normally.

In the third possible implementation manner, in combination with any of the above-mentioned aspects or the first possible implementation manner, when the first Internet of Things device is updated with each target update data item, it can be implemented in the following manner:

Acquire the security code and the first version number included in the target update data item, where the security code is used to verify whether the target update data item matches the first Internet of Things device, and the first version Number is used to identify the version of the target update data item;

Acquire the second version number of the update object corresponding to the target update data item on the first Internet of Things device, where the update object includes the firmware of the first Internet of Things device or the Internet of Things device Running software

Using the private key of the first Internet of Things device to verify whether the security code matches the first Internet of Things device, and to determine whether the first version number is higher than the second version number;

If the security code matches the first Internet of Things device, and the first version number is higher than the second version number, the target update data item is used to update the update object.

In the embodiment of the present invention, first obtain the security code and the first version number included in the target update data item, and obtain the second version number of the update object corresponding to the target update data item on the first Internet of Things device, and then use The private key of the first IoT device verifies whether the security code matches the first IoT device, and verifies whether the first version number is higher than the second version number, only if the security code matches the first IoT device and the first When the first version number is higher than the second version number, the target update data item is used to update the update object on the first Internet of Things device. By verifying the security code, the legitimacy of the target update data item can be judged, and the security problems caused by the use of maliciously tampered or illegally created target update data items to update the IoT device can be avoided, so as to ensure the update of the IoT device safety. By comparing the first version number with the second version number, it is possible to ensure that the IoT device is updated to an upgrade update, and to avoid the downgrade update of the IoT device due to human error putting low-version update data items into the update data package , Which can ensure the reliability of updating the Internet of Things devices.

In the fourth possible implementation manner, in combination with any of the above-mentioned aspects, the first possible implementation manner, the second possible implementation manner, or the third possible implementation manner, the second update data packet is sent to When the second IoT device is used, it can be implemented in the following ways:

Acquiring a next update device address included in the target update data item, where the next update device address is used to identify the third Internet of Things device in the network topology;

Send the second update data packet to the second Internet of Things device according to the address of the next update device.

In the embodiment of the present invention, for the situation that the target update data item exists in the first update data packet, the target update data item includes the next update device address, where the next update device address is defined when the update data package is created Yes, it is used to identify the next second IoT device that needs to be updated in the network topology. Therefore, after the first Internet of Things device is updated with the target update data packet, the next update device address can be obtained from the target update data packet, and then the second update data packet is sent to The second IoT device. The update data packet is delivered to the next IoT device according to the address of the next update device included in the target update data item, so that the update data packet can be transmitted according to the predefined delivery path, ensuring that the update data packet can be transmitted to the need for update The Internet of Things equipment, and can make the update data package be transmitted to the Internet of Things equipment that needs to be updated as soon as possible, to ensure the efficiency of updating the Internet of Things equipment.

In the fifth possible implementation manner, in combination with the foregoing first possible implementation manner, when the first update data packet is sent to the third Internet of Things device, it can be implemented in the following manner:

Determine a target transmission path, where the target transmission path is a path connecting the first Internet of Things device and each fourth Internet of Things device in the network topology, and the first update data packet contains a path for each The update data item updated by the fourth Internet of Things device;

Determining one of the fourth Internet of Things device closest to the first Internet of Things device in the target transmission path as the third Internet of Things device;

Sending the first update data packet to the third Internet of Things device.

In the embodiment of the present invention, in view of the situation that there is no target update data item in the first update data packet, the fourth Internet of Things that can be updated with each update data item in the first update data packet is first determined from the network topology Device, and then determine the target transmission path connecting the first IoT device and each fourth IoT device, and then determine the fourth IoT device closest to the first IoT device in the target transmission path as the third IoT device , And then send the first update data packet to the third IoT device. Determine each fourth IoT device that needs to be updated based on each update data item included in the update data packet, and then determine a target transmission path that can connect the first IoT device and each fourth IoT device in the network topology, so that The update data packet is transmitted according to the target transmission path. Under the premise of ensuring that each IoT device that needs to be updated can be updated, the update data packet passes through as few IoT devices as possible, which can shorten the update data packet transmission The time consumed, thereby improving the efficiency of updating IoT devices.

Description of the drawings

FIG. 1 is a schematic diagram of a device update system provided by an embodiment of the present invention;

FIG. 2 is a schematic diagram of a connection relationship of Internet of Things devices according to an embodiment of the present invention;

3 is a schematic diagram of another connection relationship of Internet of Things devices provided by an embodiment of the present invention;

4 is a flowchart of a device update method provided by an embodiment of the present invention;

Figure 5 is a schematic structural diagram of an update data item provided by an embodiment of the present invention;

FIG. 6 is a flowchart of a method for updating IoT devices according to an embodiment of the present invention;

FIG. 7 is a flowchart of a second update data packet transmission method according to an embodiment of the present invention;

FIG. 8 is a flowchart of a first update data packet transmission method according to an embodiment of the present invention;

FIG. 9 is a flowchart of another device update method provided by an embodiment of the present invention;

FIG. 10 is a schematic diagram of a linear topology according to an embodiment of the present invention;

FIG. 11 is a schematic diagram of another device update system provided by an embodiment of the present invention;

FIG. 12 is a schematic diagram of an update process of an Internet of Things device provided by an embodiment of the present invention;

FIG. 13 is a schematic diagram of a first Internet of Things device according to an embodiment of the present invention;

14 is a schematic diagram of a first Internet of Things device including a second data packet sending module according to an embodiment of the present invention;

15 is a schematic diagram of another first Internet of Things device provided by an embodiment of the present invention;

16 is a schematic diagram of still another first Internet of Things device according to an embodiment of the present invention;

FIG. 17 is a schematic diagram of still another first Internet of Things device according to an embodiment of the present invention;

FIG. 18 is a schematic diagram of a first Internet of Things device including a memory and a processor according to an embodiment of the present invention.

List of reference signs:

10: Update server 20: First Internet of Things device 30: Second Internet of Things device

40: Third Internet of Things device 201: Data packet receiving module 202: Data packet detection module

203: Device update module 204: Data packet update module 205: First data packet sending module

206: Second data packet sending module 2031: First information acquisition unit 2032: Second information acquisition unit

2033: Information matching unit 2034: Object update unit 2051: Address acquisition unit

2052: First sending unit 2061: Path determination unit 2062: Device screening unit

2063: The second sending unit 207: Memory 208: Processor

501: Security code 502: Target device address 503: Version number

504: Update content 505: Agreement information 506: Status information

507: Next update device address 1001: Internet of Things device 1002: Internet of Things device

1003: Internet of Things equipment 1004: Internet of Things equipment 1005: Internet of Things equipment

1101: Update server 1102: Gateway 1103: Internet of Things equipment

1104: Internet of Things equipment 1105: Internet of Things equipment 1106: Internet of Things equipment

1107: Internet of Things equipment 1108: Update data package 1201: User

1202: Update management system 1203: Gateway 1204: Internet of Things equipment

120n: IoT devices

401: Receive the first update packet

402: Detect whether the first update data package includes a target update data item

403: Use the target update data item to update the first IoT device

404: Delete the target update data item from the first update data package, and obtain the second update data package

405: Send the second update data packet to the second IoT device

601: Obtain the security code and the first version number included in the target update data item

602: Obtain the second version number of the update object corresponding to the target update data item on the first Internet of Things device

603: Use the private key of the first Internet of Things device to verify whether the security code matches the first Internet of Things device

604: Determine whether the first version number is higher than the second version number

605: Use the target update data item to update the update object

606: End the current process

701: Obtain the address of the next update device included in the target update data item

702: According to the acquired address of the next update device, send the second update data packet to the second Internet of Things device

801: Determine the target transmission path

802: Determine the fourth IoT device closest to the first IoT device as the third IoT device

803: Send the first update packet to the third IoT device

901: The update server sends the update packet to an IoT device at the end

902: The Internet of Things device receiving the update data packet detects whether the update data packet includes a target update data item

903: Verify whether the security code included in the target update data item matches the IoT device

904: Verify whether the version number included in the target update data item is higher than the version number of the update object on the IoT device

905: The Internet of Things device uses the target update data item to update the update object

906: The IoT device deletes the target update data item from the update data package

907: The IoT device detects whether the update data package includes update data items

908: The Internet of Things device detects whether there is a second Internet of Things device/third Internet of Things device that needs to be updated

909: The IoT device sends the update packet to the second IoT device/the third IoT device

910: The Internet of Things device deletes the update data package, this update ends

Detailed ways

As mentioned earlier, the current update server sends update data packets to each IoT device in the form of broadcast, but because the update data packet includes multiple update data items for updating multiple IoT devices, the update data packet Usually there is a large amount of data, so the update server needs to send an update data packet with a large amount of data to each Internet of Things device respectively, resulting in a large traffic load on the update server.

In the embodiment of the present invention, after an Internet of Things device receives an update data package, the Internet of Things device obtains the corresponding target update data item from the update data package to update its firmware or the software running on it, after the update is completed Delete the target update data item from the update data package, and then the IoT device will send the update data package to the next IoT device, and the next IoT device will update and package data in the same way as the IoT device Until all the IoT devices are updated, the update server only needs to send an update data packet to one IoT device once, and the update data packet can be delivered to each IoT device to be updated to update the IoT device. When updating IoT devices, the traffic load of the update server can be reduced.

The device update method, system, and first Internet of Things device provided by the embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be noted that in each of the following embodiments, the first Internet of Things device, the second Internet of Things device, the third Internet of Things device, and the fourth Internet of Things device are Internet of Things devices in the same network topology, and each Internet of Things device is not There are differences between levels, and the network topology can be star topology, tree topology, line topology, ring topology, etc.

As shown in FIG. 1, an embodiment of the present invention provides a device update system, including: an update server 10 and at least two first Internet of Things devices 20;

At least two first Internet of Things devices 20 are connected in sequence in the same network topology, and the update server 10 is connected to one first Internet of Things device 20 at the end;

The update server 10 is configured to send an update data packet including at least one update data item to the connected first Internet of Things device 20.

In the embodiment of the present invention, since each first Internet of Things device 20 is connected in sequence in the same network topology, and the update server 10 is connected to a first Internet of Things device 20 at the end, therefore, for any first Internet of Things device 20 The Internet of Things device 20, if the first Internet of Things device 20 is directly connected to the update server 10, the first Internet of Things device 20 receives an update data packet from the update server 10. If the first Internet of Things device 20 is not connected to the update server 10 10 is directly connected, the first Internet of Things device 20 receives update data packets from other first Internet of Things devices 20 directly connected to it.

It should be noted that in the above embodiment, the first Internet of Things device 20 directly connected to the update server 10 refers to the Internet of Things device that is directly connected to the update server 10 without passing through other Internet of Things devices in the physical network. The first Internet of Things device directly connected to the update server 10 refers to the Internet of Things device that needs to pass through one or more other Internet of Things devices to connect to the update service 20 in the physical network, and the two first things that are directly connected The Internet of Things 20 refers to two Internet of Things devices that are directly connected without passing through other Internet of Things devices in the network topology. However, in the physical network, the two Internet of Things devices can be connected without passing through other Internet of Things devices. It can be connected via one or more other IoT devices.

In the following embodiments, for any one of the first Internet of Things device 20, in order to facilitate the distinction between the update data packet received by the first Internet of Things device 20 and the update data after the first Internet of Things device 20 deletes the target update data item The update data package received by the first Internet of Things device 20 is defined as the first update data package, and the update data package after the first Internet of Things device 20 deletes the target update data item is defined as the second update data package.

For any first Internet of Things device 20, after the first Internet of Things device 20 receives the first update data packet, according to the difference in the update data items included in the received first update data packet, the first Internet of Things device 20 A total of three different processing methods from A to C can be adopted as follows:

A. If the first update data package includes a target update data item for updating the firmware of the first Internet of Things device 20 or the software running on the first Internet of Things device 20, the first Internet of Things device 20 uses The target update data item is updated, and then the target update data item is deleted from the first update data package to obtain the second update data package.

After obtaining the second update data packet, according to whether there is an Internet of Things device that needs to be updated in the network topology and whether the second update data packet includes an update data item, the first Internet of Things device 20 can again take the following A-1 to A-3 has three processing methods:

A-1. As shown in Figure 2, if there is an IoT device that needs to be updated in the network topology, and the second update data packet includes at least one update data item, the first IoT device 20 sets the second The update data packet is sent to the next second Internet of Things device 30 that needs to be updated. At this time, the first Internet of Things device 20 sends the second update data packet to the second Internet of Things device 30, so that the second Internet of Things device 30 can use the same method to update.

A-2. If there is no IoT device that needs to be updated in the network topology, the first IoT device 20 deletes the second update data packet, and the device update process is terminated. At this time, since there is no IoT device that needs to be updated in the network topology, after the first IoT device 20 deletes the second update data packet, the update of the IoT device is terminated.

A-3. If the second update data package does not include any update data items, the first Internet of Things device 20 deletes the second update data package, and the device update process is terminated. At this time, since there is no update data item in the second update data packet that can be used to update the Internet of Things device, there is no need to continue to transmit the empty second update data packet, so that the first Internet of Things device 20 transfers the second The update data package is deleted, and the update of the IoT device is terminated.

B. As shown in FIG. 3, if the first update data package does not include a target update data item for updating the firmware of the first Internet of Things device 20 or the software running on the first Internet of Things device 20, and There are IoT devices that need to be updated in the network topology, and the first IoT device 20 sends the first update data packet to the next third IoT device 40 that needs to be updated. At this time, since the first update data package does not include the target update data item used to update the first Internet of Things device 20, it means that the first Internet of Things device 20 does not need to be updated this time. The first Internet of Things device 20 directly sends the received first update data packet to the next third Internet of Things device 40 that needs to be updated for subsequent Internet of Things devices to update.

C. If the first update data package does not include a target update data item for updating the firmware of the first Internet of Things device 20 or the software running on the first Internet of Things device 20, and there is no need in the network topology For the Internet of Things device that is updating, the first Internet of Things device 20 deletes the first update data packet, and the device update process is terminated. At this time, since there is no IoT device that needs to be updated in the network topology, although the first update data packet still includes update data items, there is no need to continue to transmit the first update data packet, and the first IoT device 20 After the first update data packet is deleted, the update of the IoT device is terminated.

It should be noted that in the above processing method A-1 and processing method B, the second Internet of Things device 30 and the third Internet of Things device 40 are Internet of Things devices that need to be updated in the network topology, and the first thing in the network topology The networked device 20 may be directly connected to the second Internet of Things device 30 and the third Internet of Things device 40, or may not be directly connected. When the first Internet of Things device 20 is directly connected to the second Internet of Things device 30 and the third Internet of Things device 40 in the network topology, the first Internet of Things device 20 can directly send the second update data packet to the second Internet of Things device 30 or directly send the first update data packet to the third Internet of Things device 40. When the first Internet of Things device 20 is not directly connected to the second Internet of Things device 30 and the third Internet of Things device 40 in the network topology, the first Internet of Things device 20 needs to send the first update data packet or the second update data packet first. It is sent to the Internet of Things devices that do not need to be updated between the first Internet of Things device 20, the second Internet of Things device 30, and the third Internet of Things device 40 in the network topology, and the Internet of Things devices that do not need to update receive the first Internet of Things device. After the update data packet or the second update data packet, the first update data packet or the second update data packet is transferred to the second Internet of Things device 30 or the third Internet of Things device 40 according to the processing method B.

In the device update system provided by the embodiment of the present invention, after the update server 10 sends the update data packet to a first Internet of Things device 20, the first Internet of Things device 20 that has obtained the update data packet determines from the update data packet that it can Update the data item for the updated target, and delete the determined target update data item from the update data package after completing the update with the determined target update data item, and then send the update data package to the next first thing The networked device 20 until there is no IoT device that needs to be updated in the network topology or the update data package no longer includes update data items. It can be seen that the update data packet is transmitted between each first Internet of Things device 20, and each first Internet of Things device 20 obtains the required update data item from the update data packet for update, and will have used it after the update is completed. The update data items of the update data items are deleted until the update of all the first IoT devices 20 that have update requirements is completed. Since the update server 10 only needs to send an update data packet once, the redundant load of the update server 10 is reduced, thereby reducing the update of the Internet of Things The traffic load of the server 10 is updated during the installation process.

It should be noted that the at least two first IoT devices 20 connected in sequence may be located in various types of network topologies such as star topology, tree topology, line topology, ring topology and so on. For the star topology and the tree topology, the transmission path of the update data packet can be determined by defining the parameters of the update data packet, and the transmission path of the update data packet is each first IoT device 20 connected in sequence. For the linear topology and the ring topology, since neither branch exists, the two themselves are composed of a plurality of first IoT devices 20 connected in sequence, except for the two first IoT devices in the ring topology. 20 connected together to form a ring.

In addition, it should be noted that the first Internet of Things device 20, the second Internet of Things device 30, and the third Internet of Things device in the embodiment of the present invention are located in the same network topology. Which Internet of Things devices are included in the network topology can be predefined, from The update data packet sent by the update server is used to update the IoT devices in the network topology. During specific implementation, the network topology can be defined according to the application scenario:

For example, the network topology includes all IoT devices included in an actual physical network.

Another example: the network topology includes all IoT devices of a certain type predefined in an actual physical network;

For another example: the network topology includes a number of IoT devices predetermined in an actual physical network, wherein a device list can be formed according to identification information such as the device address and device name of each IoT device, and the update data item includes The identification information of the next IoT device to be updated.

The above several methods are only examples. In the specific implementation, as long as the network topology of the IoT device that needs to be updated is defined in advance, during the updating process of the IoT device, the update data packet is transmitted between the devices, and the update data packet The number of updated data items is gradually reduced, which reduces the data transmission delay between IoT devices and improves the update efficiency of IoT devices.

In the above description, the actual physical network can be a network composed of network equipment in a factory, a network composed of network equipment in a workshop of the factory, or a network of a production line in a workshop of the factory A network of devices. In the above description, for a network topology with a predefined device type, the device type can be PLC, industrial host, etc.

The following describes the device update method provided by the embodiment of the present invention, which may be executed by the aforementioned first Internet of Things device 20. If there is no feature statement, the update server involved in each of the following method embodiments may be the aforementioned update server 10, and the first IoT device involved in each of the following method embodiments may be the aforementioned first IoT device 20. The second Internet of Things device involved in each method embodiment may be the aforementioned second Internet of Things device 30, and the third Internet of Things device involved in each method embodiment described below may be the aforementioned third Internet of Things device 40.

In the device update method provided by the embodiment of the present invention, the first Internet of Things device determines whether to perform update processing according to the difference in the update data item in the received update data packet, and according to whether there are still Internet of Things devices that need to be updated in the network topology Decide whether to continue transmitting update packets. As shown in Figure 4, the method may specifically include the following steps:

Step 401: Receive a first update data packet, where the first update data packet includes at least one update data item;

Step 402: Detect whether a target update data item is included in the first update data packet;

Step 403: If there is a target update data item in the first update data packet, use the target update data item to update the first Internet of Things device;

Step 404: Delete the target update data item from the first update data package to obtain a second update data package;

Step 405: If the second update data packet includes at least one update data item, and the IoT device that needs to be updated in the network topology, determine that the next IoT device that needs to be updated is the second IoT device, and Send the second update data packet to the second Internet of Things device.

In the embodiment of the present invention, after receiving the first update data package, it is detected whether the first update data package includes a target for updating the firmware of the first Internet of Things device or the software running on the first Internet of Things device Update the data item. If there is a target update data item in the first update data package, use the target update data item to update the first Internet of Things device, and after the update is completed, remove each target update data item from the first update data package Delete to obtain the second update data packet, and then send the second update data packet to the second Internet of Things if the update data item is included in the second update data packet and there are IoT devices that need to be updated in the network topology equipment. It can be seen that the update data package that includes multiple update data items can be transmitted sequentially among the various IoT devices, and the IoT device that receives the update data packet can use the corresponding update data item in the update data package to update, in After the update is complete, delete the used update data items from the update data package, and then transmit the update data package to the next IoT device, so that each IoT device that needs to be updated can be updated with one update data package. The update server only needs to send an update data packet to one IoT device once. Since the redundant load of the update server is reduced, the traffic load of the update server in the process of updating the IoT device can be reduced.

In the embodiment of the present invention, if there is a target update data item used to update the firmware of the first Internet of Things device or the software running on the first Internet of Things device in the first update data package, the target update data item is used After the first Internet of Things device is updated, the first update data packet after deleting the target update data item is taken as the second update data packet, and then the second update data packet can be sent to the second Internet of Things device. Because the firmware of different IoT devices and the software running on them are different, the update data items used to update different IoT devices are also different. The updated data items that have been used are deleted from the update data package. The data volume of the update data packet is continuously reduced with the progress of the update data packet transmission process, thereby reducing the network bandwidth required to transmit the update data packet, and can increase the transmission rate of the update data packet, which is helpful to increase The efficiency of updating IoT devices.

In the embodiment of the present invention, if there is no IoT device that needs to be updated in the network topology, the transmission of the second update data packet is stopped, and the current IoT device update ends. In addition, if there is no update data item used to update the IoT device in the second update data package, even if there is an IoT device that needs to be updated in the network topology, there is no need to include the second update that does not include the update data item. When the data packet is transmitted to other IoT devices, the second update data packet is stopped at this time, and the current IoT device update ends.

Optionally, on the basis of the device update method shown in FIG. 4, after step 402 detects whether the first update data packet includes a target update data item, if the middle of the first update data packet includes a target update data item, you can further Determine whether there is an IoT device that needs to be updated in the network topology. If there is an IoT device that needs to be updated in the network topology, determine the next IoT device that needs to be updated as the third IoT device, and then update the first The data packet is sent to the third IoT device.

Optionally, on the basis of the device update method shown in FIG. 4, when step 402 detects whether the first update data package includes a target update data item, it may be detected whether each update data item included in the first update data package is The target update data item is used to determine whether the first update data packet includes the target update data item.

Specifically, for each update data item included in the first update data packet, the target device address included in the update data item is acquired. If the acquired target device address is the same as the device address of the first Internet of Things device, then The update data item is determined to be a target update data item. After traversing all the update data items in the first update data package, if one update data item in the first update data package is determined as the target update data item, it is determined that the first update data package includes the target update data item, That is, it indicates that there is an update data item used to update the first Internet of Things device in the first update data package.

In the embodiment of the present invention, each update data item includes a target device address, and the target device address is used to identify the Internet of Things device that needs to be updated. After an Internet of Things device receives the update packet, the Internet of Things device By detecting the target device address included in each update data item in the update data package, the device can determine whether the update data package includes the target update data item used to update the Internet of Things device, and then can determine the firmware and software Update or directly forward the obtained update data packet to the next IoT device. In this way, it is possible to update part of the Internet of Things devices in the network topology and to ensure the normal transmission of update data packets.

It should be noted that the target device address can be an IP address, a MAC address, and so on. In addition, the structure of the update data item can be specifically as shown in Figure 5. In addition to the target device address 502, the update data item can also include a security code 501, a version number 503, update content 504, protocol information 505, status information 506, and The next update device address 507, etc., where the security code 501 is used to verify the update data item, the version number 503 is used to identify the version of the update content, the update content 504 is the specific update data, and the protocol information 505 is used to identify the network transmission Protocol, the status information 506 is used to identify the operating status of the Internet of Things device, and the next update device address 507 is used to identify the next Internet of Things device to receive an update packet. The security code 501, the version number 503, and the next update device address 507 will be described in detail in subsequent embodiments. The protocol information 505 may specifically be TFTP, SNMP, NFS, DNS, or BOOTP.

Optionally, on the basis of the device update method shown in FIG. 4, before step 403 uses the target update data item to update the first Internet of Things device, the target update data item needs to be updated according to the security code included in the target update data item. Security is verified, and it is necessary to verify whether the update process is an upgrade process according to the version number included in the target update data item. After passing the above two verifications, the target update data item is used to update the first Internet of Things device. As shown in FIG. 6, the method for updating the first Internet of Things device using the target update data item may include the following steps:

Step 601: Acquire a security code and a first version number included in a target update data item, where the security code is used to verify whether the target update data item matches the first Internet of Things device, and the first version number Used to identify the version of the target update data item;

Step 602: Obtain the second version number of the update object corresponding to the target update data item on the first Internet of Things device, where the update object includes the firmware of the first Internet of Things device or software running on the Internet of Things;

Step 603: Use the private key of the first Internet of Things device to verify whether the security code matches the first Internet of Things device, if it is Y, go to step 604, if not, go to step 606;

Step 604: Determine whether the first version number is higher than the second version number, if it is Y, go to step 605, if not, go to step 606;

Step 605: Use the target update data item to update the update object;

Step 606: End the current process.

In the embodiment of the present invention, the private key of the first Internet of Things device is first used to verify whether the security code included in the target update data item matches the first Internet of Things device, and only when the security code matches the first Internet of Things device Only when it matches can the target update data item be used to update the first IoT device, so as to avoid malicious tampering of the target update data item and cause abnormal operation of the updated IoT device, thereby ensuring the security and reliability of the update.

Furthermore, the security code included in the target update data item can be encrypted by the public key of the first Internet of Things device. If the private key of the first Internet of Things device can be used to successfully decrypt the security code, it means that the security code and the first If the IoT device matches, if the security code cannot be successfully decrypted by using the private key of the first IoT device, it means that the security code does not match the first IoT device.

In the embodiment of the present invention, after determining that the security code included in the target update data item matches the first Internet of Things device, it can be further determined whether the first version number included in the target update data item is higher than the first Internet of Things device The second version number of the corresponding update object on the above, only when the first version number is higher than the second version number, will the target update data item be used to update the update object on the first Internet of Things device, ensuring that the Internet of Things device The update of the Internet of Things is an upgrade process to avoid downgrading or parallel updating of the Internet of Things devices due to operational errors, thereby ensuring the reliability of updating the Internet of Things devices.

It should be noted that in each of the above-mentioned embodiments and subsequent embodiments, the updating of the IoT device is essentially updating the firmware of the IoT device or the software program running on the IoT device, that is, The update object is the firmware of the IoT device or the software program running on the IoT device. When determining whether the first version number is higher than the second version number, it is to determine whether the version corresponding to the update content in the target update data item is higher than the existing version of the update object.

In addition, it should be noted that the target update data item can include one or more update data sub-items, and each update data sub-item is used to update one update object, which is suitable for simultaneously updating multiple data on the same IoT device. The software program or the need for updating the firmware and software program of the IoT device. In addition, the structure of each update data sub-item has the structure shown in FIG. 5.

Optionally, based on the device update method shown in FIG. 4, when the second update data packet is sent to the second IoT device in step 405, it is first necessary to determine the next second IoT device to receive the update data packet. As shown in FIG. 7, the method of sending the second update data packet to the second Internet of Things device may specifically include the following steps:

Step 701: Obtain the next update device address included in the target update data item, where the next update device address is used to identify the second Internet of Things device in the network topology;

Step 702: Send the second update data packet to the second Internet of Things device according to the acquired address of the next update device.

In the embodiment of the present invention, the target update data item includes the next update device address. After the target update data item is deleted from the first update data packet and the second update data packet is obtained, Obtain the next update device address in the target update data item, and the update device address is used to identify the next IoT device that needs to be updated in the network topology, and then determine the next IoT device that needs to be updated as the second thing In this way, the second update data packet can be sent to the second Internet of Things device conveniently according to the address of the next update device, so that the update data packet can be transmitted between the Internet of Things devices.

Optionally, when the first update data packet is sent to the third Internet of Things device, since there is no target update data item in the first update data packet, it cannot be determined according to the next update device address in the target update data item The next IoT device that needs to be updated. At this time, it is necessary to determine the transmission path of the update data packet according to the IoT device corresponding to each update data item in the first update data packet, and then determine the third according to the determined transmission path IoT devices. As shown in FIG. 8, the method of sending the first update data packet to the third Internet of Things device may specifically include the following steps:

Step 801: Determine the target transmission path, where the target transmission path is a path connecting the first Internet of Things device and each fourth Internet of Things device in the network topology, and the first update data packet is used for each fourth Internet of Things device Update data items for updating;

Step 802: Determine a fourth Internet of Things device closest to the first Internet of Things device in the target transmission path as the third Internet of Things device;

Step 803: Send the first update data packet to the third Internet of Things device.

In the embodiment of the present invention, after it is determined that there is no target update data item for updating the first Internet of Things device in the first update data packet, for each update data item included in the first update data packet, according to The target device address included in the update data item determines the fourth Internet of Things device in the network topology that can be updated with the update data item. After determining the fourth IoT device corresponding to each update data item in the first update data packet, determine the path connecting the first IoT device and each fourth IoT device in the network topology as the target path, and then set the target A fourth Internet of Things device closest to the first Internet of Things device in the path is determined to be the third Internet of Things device, and then the first update data packet can be sent to the determined third Internet of Things device.

Since the first update data package does not include a target update data item for updating the first Internet of Things device, the third Internet of Things device cannot be determined according to the target device address included in the target update data item. At this time, respectively determine the fourth IoT device corresponding to each update data item in the first update data packet, and then determine a target transmission path that can connect the first IoT device and each fourth IoT device, so that the update The data packet can be transmitted to each fourth IoT device in turn according to the target transmission path. In order to transmit the first update data packet to the next IoT device that needs to be updated, the first IoT device in the target path closest to the first IoT device Fourth, the Internet of Things device is determined to be the third Internet of Things device, and then the first update data packet is sent to the third Internet of Things device.

In the embodiment of the present invention, when the IoT devices in the same network topology are updated, all the IoT devices in the network topology may not be updated, so the IoT devices located on the target transmission path may not only be The first Internet of Things device and each fourth Internet of Things device, that is, the target transmission path between the first Internet of Things device and the fourth Internet of Things device or between two fourth Internet of Things devices may have other things that do not need to be updated IoT devices.

Taking the updating of the Internet of Things devices in the linear topology as an example, the device updating method provided in the embodiment of the present invention will be described in further detail. As shown in FIG. 9, the method may include the following steps:

Step 901: The update server sends the update data packet to an IoT device at the end.

In the embodiment of the present invention, as shown in FIG. 10, the linear topology includes IoT devices 1001 to 1005 connected in sequence, and the update data packet includes update data items 1 to update Data item 4, where update data item 1 and update data item 2 are used to update the Internet of Things device 1001, update data item 3 is used to update the Internet of Things device 3, and update data item 4 is used to update the Internet of Things device 4 Update. When starting to update the Internet of Things device, the update server first sends an update data packet to the Internet of Things device 1001.

Step 902: The IoT device that has received the update data packet detects whether the update data packet includes the target update data item, if it is Y, execute step 903, if not, execute step 908.

In the embodiment of the present invention, after an Internet of Things device in the network topology receives an update data packet from an update server or other Internet of Things device, the Internet of Things device first detects whether there is any update data packet for itself. The target update data item, if the target update data item exists, it needs to update itself, and step 903 is executed accordingly. If the target update data item does not exist, the update data packet needs to be sent to the next IoT device, and the steps are executed accordingly 908. Specifically, after the IoT device receives the update data packet, it can detect whether the target device address included in at least one update data item is the same as the device address of the IoT device in the update data packet, and if it exists, the update data packet is determined There is a target update data item in it, and the included update data item whose target device address is the same as the device address of the Internet of Things device is determined as the target update data item.

For example, after the IoT device 1001 receives the update data packet from the update server, it detects that the target device address included in the update data item 1 and the update data item 2 is the same as the device address of the IoT device 1001, and then updates the data item 1 and update data item 2 are determined to be the target update data item of the Internet of Things device 1001, and step 903 is executed accordingly. After the Internet of Things device 1002 receives the update data packet from the Internet of Things device 1001, since the target device address included in the update data item is not the same as the device address of the Internet of Things device 1002 in the update data packet, the Internet of Things device 1002 performs the steps 908.

Step 903: verify whether the security code included in the target update data item matches the IoT device, if it is Y, execute step 904, if not, execute step 906.

In the embodiment of the present invention, after the IoT device determines the target update data item, the private key of the IoT device is used to verify whether the security code included in the target update data item matches the IoT device, and if it matches, Step 904 is executed for the target update data item, and if there is no match, step 906 is executed for the target update data item.

For example, after the IoT device 1003 determines the update data item 3 as its own target update data item, the IoT device 1003 uses its private key to verify whether the security code included in the update data item 3 matches the IoT device 1003. The verification result is that the security code included in the updated data item 3 matches the Internet of Things device 1003, and the Internet of Things device 1003 performs step 904 for the updated data item 3. After the IoT device 1004 determines the update data item 4 as its own target to update the data item, the IoT device 1004 uses its private key to verify whether the security code included in the update data item 4 matches the IoT device 1004, the verification result To update the security code included in the data item 4 does not match the Internet of Things device 1004, the Internet of Things device 1004 performs step 906 for the updated data item 4.

Step 904: verify whether the version number included in the target update data item is higher than the version number of the update object on the Internet of Things device, if it is Y, perform step 905, if not, perform step 906.

In the embodiment of the present invention, after verifying that the security code included in the target update data item matches the IoT device, determine the update object used for the update of the target update data item, and verify whether the version number included in the target update data item is If it is higher than the version number of the update object, step 905 is executed for the target update data item, otherwise, step 906 is executed for the target update data item.

For example, after determining that the update data item 1 is used to update the firmware of the Internet of Things device 1001, and the update data item 2 is used to update the software 1 on the Internet of Things device 1001, obtain the version number and software of the Internet of Things device 1001 firmware 1 and compare the version number of the IoT device 1001 firmware with the version number included in the update data item 1, and compare the version number of the software 1 with the version number included in the update data item 2, and the comparison result is The version number included in the update data item 1 is higher than the version number of the firmware of the Internet of Things device 1001, and the version number included in the update data item 2 is higher than the version number of the software 1, and the Internet of Things device 1001 responds to the update data item 1 and update data Item 2 executes step 905.

For another example, after it is determined that the update data item 3 is used to update the firmware of the Internet of Things device 1003, the version number of the firmware of the Internet of Things device 1003 is obtained, and the version number of the firmware of the Internet of Things device 1003 is included in the update data item 3. The comparison result is that the version number included in the updated data item 3 is lower than the version number of the firmware of the Internet of Things device 1003, and the Internet of Things device 1003 performs step 906 for the updated data item 3.

Step 905: The Internet of Things device uses the target update data item to update the update object.

In the embodiment of the present invention, after determining that the version number included in the target update data item is higher than the version number of the update object on the Internet of Things device, the Internet of Things device uses the target update data item to update the update object.

For example, the Internet of Things device 1001 uses update data item 1 to update the firmware of the Internet of Things device 1001, and the Internet of Things device 1001 uses update data item 2 to update the software 1 on the Internet of Things device 1001.

Step 906: The IoT device deletes the target update data item from the update data package.

In the embodiment of the present invention, for each determined target update data item, when it is determined that the security code included in the target update data item does not match the IoT device, or when the version number included in the target update data item is determined After it is lower than or equal to the version number of the update object on the IoT device, or after the target update data item has been used to update the corresponding update object, the target update data item is deleted from the update data package.

For example, the Internet of Things device 1001 deletes the update data item 1 and the update data item 2 from the obtained update data package, the Internet of Things device 1003 deletes the update data item 3 from the obtained update data package, and the Internet of Things device 1004 The update data item 4 will be deleted from the obtained update data package.

Step 907: The Internet of Things device detects whether the update data packet includes an update data item, if it is Y, execute step 908, if not, execute step 810.

In the embodiment of the present invention, for each Internet of Things device, if there is a target update data item in the update data packet received by the Internet of Things device, after the target update data item is deleted from the update data package, it is determined to update Whether there is at least one update data item in the data packet, if yes, go to step 908, if otherwise, go to step 910; if there is no target update data item in the update data packet received by the IoT device, it does not need to be deleted The target is the step of updating data items. Therefore, there must be at least one update data item in the update data packet, and step 908 is executed at this time.

For example, after the Internet of Things device 1001 deletes update data item 1 and update data item 2 from the update data package, since the update data package also includes update data item 3 and update data item 4, the Internet of Things device 1001 executes steps 908. The Internet of Things device 1002 does not perform an operation to delete the target update data item. The update data package it obtains from the Internet of Things device 1001 includes update data item 3 and update data item 4, so the Internet of Things device 1002 performs step 908. After the Internet of Things device 1003 deletes the update data item 3 from the update data package, since the update data package also includes the update data item 4, the Internet of Things device 1003 executes step 908. After the IoT device 1004 deletes the update data item 4 from the update data package, since the update data package does not include any update data items, the IoT device 1004 executes step 910.

Step 908: The Internet of Things device detects whether the second Internet of Things device/third Internet of Things device that needs to be updated is stored, if it is Y, execute step 909, if not, execute step 910.

In the embodiment of the present invention, after the Internet of Things device deletes the target update data item from the update data package, if it is determined that the update data package also includes the update data item, the Internet of Things device determines whether there is still a need in the network topology For the second Internet of Things device to be updated, if yes, execute step 909; otherwise, execute step 910. After the Internet of Things device determines that the update data packet does not include the target update data item, the Internet of Things device determines whether there is a third Internet of Things device that needs to be updated in the network topology, and if so, execute step 909, otherwise execute step 910.

For example, the Internet of Things device 1002 is the second Internet of Things device of the Internet of Things device 1001, so the Internet of Things device 1001 performs step 909 after determining that there is an update data item in the update data packet. The Internet of Things device 1005 does not have a connected second Internet of Things device. Even if the Internet of Things device 1005 determines that there is an update data item in the update data packet, the Internet of Things device 1005 will perform step 910.

Step 909: The IoT device sends the update data packet to the second IoT device/third IoT device.

In the embodiment of the present invention, after the IoT device determines that there is an update data item in the update data packet and there is a second IoT device/third IoT device that needs to be updated, the IoT device sends the update data packet to the second IoT device Device/third Internet of Things device, the second Internet of Things device/third Internet of Things device that receives the update data package will continue to update the Internet of Things device or transfer the update data package according to step 902 to step 909.

For example, the Internet of Things device 1001 sends an update data packet to the Internet of Things device 1002, the Internet of Things device 1002 sends an update data packet to the Internet of Things device 1003, and the Internet of Things device 1003 sends an update data packet to the Internet of Things device 1004.

Step 910: The IoT device deletes the update data package, and this update ends.

In the embodiment of the present invention, when the Internet of Things device is at the end of the network topology, or the update data package no longer includes the update data item, the Internet of Things device deletes the empty update data packet. This update of the Internet of Things device End.

The transmission process of update data packets between IoT devices will be further described below with reference to the drawings. As shown in Figure 11, the update server 1101 is connected to the gateway 1102, the gateway 1102 is connected to the IoT device 1103, and the IoT device 1103 To 1107 are connected in sequence, and the Internet of Things device 1107 is connected to the gateway 1102.

After the update server 1101 sends the update data package 1108 to the gateway 1102, the gateway 1102 sends the update data package 1108 to the Internet of Things device 1103. At this time, the update data package 1108 includes information for updating the Internet of Things devices 1103 to 1107. Multiple update data items. As shown in Figure 11, the shading is used to represent the update data items included in the update data packet 1108. It can be seen that the update data packet 1108 sent by the gateway 1102 to the IoT device 1103 includes all the update data items. For example, the update data packet 1108 at this time The amount of data is 64K.

After the IoT device 1103 receives the update data package 1108, it uses the corresponding update data item in the update data package 1108 to update, and then deletes the update data item used to update the IoT device 1103 from the update data package 1108, Then, the update data packet 1108 is sent to the Internet of Things device 1104. As shown in FIG. 11, the update data items in the update data packet 1108 sent by the IoT device 1103 to the IoT device 1104 have been reduced, specifically it does not include the update data items used to update the IoT device 1103, such as this The data volume of the time update data packet 1108 is 50K.

After the IoT device 1104 receives the update data package 1108, it uses the corresponding update data item in the update data package 1108 to update, then deletes the update data item used to update the IoT device 1104, and then updates the data package 1108 Send to the Internet of Things device 1105. As shown in Figure 11, the update data package 1108 sent by the Internet of Things device 1104 to the Internet of Things device 1105 has further reduced the number of update data items in China, specifically excluding the updates used to update the Internet of Things device 1103 and the Internet of Things device 1104 The data item, for example, the data volume of the update data packet 1108 at this time is 40K.

After the IoT device 1105 receives the update data package 1108, it uses the corresponding update data item in the update data package 1108 to update, then deletes the update data item used to update the IoT device 1105, and then updates the data package 1108 Send to the Internet of Things device 1106. As shown in Figure 11, the update data package 1108 sent by the Internet of Things device 1105 to the Internet of Things device 1106 has further reduced data items in China, specifically not including the update data items used to update the Internet of Things devices 1103 to 1105. For example, the data volume of the update data packet 1108 at this time is 30K.

After the IoT device 1106 receives the update data package 1108, it uses the corresponding update data item in the update data package 1108 to update, then deletes the update data item used to update the IoT device 1106, and then updates the data package 1108 Send to the Internet of Things device 1107. As shown in Figure 11, the update data package 1108 sent by the Internet of Things device 1106 to the Internet of Things device 1107 has further reduced data items in China, specifically not including the update data items used to update the Internet of Things devices 1103 to 1106. For example, at this time, the data volume of the update data packet 1108 is 11K.

After the IoT device 1107 receives the update data package 1108, it uses the corresponding update data item in the update data package 1108 to update, then deletes the update data item used to update the IoT device 1106, and then updates the data package 1108 Send to gateway 1102. As shown in FIG. 11, the update data package 1108 sent by the Internet of Things device 1107 to the gateway 1102 does not include any update data items. For example, the data volume of the update data package 1108 at this time is 0K.

The following describes the process of updating IoT devices with reference to the drawings. As shown in Figure 12, the update process involves the user 1201, the update management system 1202, the gateway 1203, and the IoT devices 1204 to 120n. The specific design steps include :

S01: The user 1201 uploads the update data package to the update management system 1202;

S02: The update management system 1202 transmits the update data packet to the gateway 1203;

S03: Verify and match the security code included in the update data package;

S04: Use the update data item corresponding to the current IoT device in the update data package to upgrade the software and firmware;

S05: Delete the update data item corresponding to the current Internet of Things device from the update data package;

S06: Send the remaining update data packets to the next IoT device;

S07: Send instruction information indicating that the update is complete to the gateway 1203.

It should be noted that for each of the IoT devices 1204 to 120n, the IoT device performs S03 to S06. The difference is that the IoT device 1204 performs S03 to S06 for the update data packet from the gateway 1203. The rest of the IoT devices perform S03 to S06 for the update packet from the previous IoT device. In addition, the IoT device 120n at the end performs S07 after performing S03 to S06 to notify the gateway 1203 that the IoT device update for the update data packet has been completed.

As shown in FIG. 13, an embodiment of the present invention provides a first Internet of Things device 20, including:

A data packet receiving module 201 for receiving a first update data packet, where the first update data packet includes at least one update data item;

A data packet detection module 202 is used to detect whether the first update data packet received by the data packet receiving module 201 includes a target update data item, wherein the target update data item is used to update the firmware of the first Internet of Things device 20 or The software running on it is updated;

A device update module 203, configured to use the target update data item to update the first Internet of Things device 20 when the data packet detection module 202 determines that the first update data package includes a target update data item;

A data package update module 204, configured to delete the target update data item from the first update data package after the device update module 203 updates the first Internet of Things device 20 to obtain a second update data package;

A first data packet sending module 205 is used to determine the next step when the second update data packet obtained by the data packet update module 204 includes at least one new data item, and there is an IoT device that needs to be updated in the network topology An Internet of Things device that needs to be updated is used as the second Internet of Things device 30, and the second update data packet is sent to the second Internet of Things device 30.

In the embodiment of the present invention, the data packet receiving module 201 can be used to perform step 401 in the above method embodiment, the data packet detection module 202 can be used to perform step 402 in the above method embodiment, and the device update module 203 can be used to perform the above method In step 403 in the embodiment, the data packet update module 204 can be used to execute step 404 in the above method embodiment, and the first data packet sending module 205 can be used to execute step 405 in the above method embodiment.

Optionally, based on the first Internet of Things device 20 shown in FIG. 13, as shown in FIG. 14, the first Internet of Things device 20 further includes:

A second data packet sending module 206 is used to determine the next need when the data packet detection module 202 determines that the first update data packet does not include the target update data item, and there are IoT devices that need to be updated in the network topology The Internet of Things device to be updated serves as the third Internet of Things device 40 and sends the first update data packet to the third Internet of Things device 40.

Optionally, on the basis of the first Internet of Things device 20 shown in FIG. 13 or FIG. 14, the data packet detection module 202 is used for each update data item included in the first update data packet, if the update data item is The included target device address is the same as the device address of the first Internet of Things device 20, and the update data item is determined as a target update data item.

Optionally, on the basis of the first IoT device 20 shown in FIG. 13 or FIG. 14, as shown in FIG. 15, the device update module 203 includes:

A first information obtaining unit 2031 is used to obtain the security code and the first version number included in the target update data item, where the security code is used to verify whether the target update data item matches the first Internet of Things device 20, and the first The version number is used to identify the version of the target update data item;

A second information acquisition unit 2032, configured to acquire the second version number of the update object corresponding to the target update data item on the first Internet of Things device 20, where the update object includes the firmware or the thing of the first Internet of Things device 20 Software running on the Internet;

An information matching unit 2033 is configured to use the private key of the first Internet of Things device 20 to verify whether the security code acquired by the first information acquisition unit 2031 matches the first Internet of Things device 20, and to determine whether the first information acquisition unit 2031 acquires Whether the obtained first version number is higher than the second version number obtained by the second information obtaining unit 2032;

An object update unit 2034, for determining in the information matching unit 2033 that the security code included in the target update data item matches the first IoT device 20, and the first version number included in the target update data item is higher than the second version At the time of number, use the target update data item to update the update object.

In the embodiment of the present invention, the first information obtaining unit 2031 may be used to perform step 601 in the above method embodiment, the second information obtaining unit 2032 may be used to perform step 602 in the above method embodiment, and the information matching unit 2033 may be used to perform In step 603 and step 604 in the foregoing method embodiment, the object update unit 2034 may be used to execute step 605 and step 606 in the foregoing method embodiment.

Optionally, based on the first Internet of Things device 20 shown in FIG. 13, as shown in FIG. 16, the first data packet sending module 205 includes:

An address obtaining unit 2051, configured to obtain the next update device address included in the target update data item, where the next update device address is used to identify the third Internet of Things device 40 in the network topology;

A first sending unit 2052 is configured to send the second update data packet to the second Internet of Things device 30 according to the address of the next update device obtained by the address obtaining unit 2051.

In the embodiment of the present invention, the address obtaining unit 2051 may be used to perform step 701 in the foregoing method embodiment, and the first sending unit 2052 may be used to perform step 702 in the foregoing method embodiment.

Optionally, on the basis of the first Internet of Things device 20 shown in FIG. 14, as shown in FIG. 17, the second data packet sending module 206 includes:

A path determination unit 2061 is used to determine a target transmission path, where the target transmission path is a path connecting the first Internet of Things device 20 and each fourth Internet of Things device in the network topology, and the first update data packet is used to An update data item for the fourth Internet of Things device to update;

A device screening unit 2062, configured to determine a fourth Internet of Things device closest to the first Internet of Things device 20 in the target transmission path determined by the path determination unit 2061 as the third Internet of Things device 40;

A second sending unit 2063 is configured to send the first update data packet to the third Internet of Things device 40 determined by the device screening unit 2062.

In the embodiment of the present invention, the path determining unit 2061 can be used to perform step 801 in the above method embodiment, the device screening unit 2062 can be used to perform step 802 in the above method embodiment, and the second sending unit 2063 can be used to perform the above method implementation. Step 803 in the example.

As shown in FIG. 18, an embodiment of the present invention provides a first Internet of Things device 20, including:

At least one memory 207, configured to store executable instructions;

At least one processor 208, coupled with the at least one memory 207, when executing the executable instructions, is configured to:

A first Internet of Things device 20 located in a network topology receives a first update data packet, wherein the first update data packet includes at least one update data item;

Detecting whether the first update data package includes a target update data item, where the target update data item is used to update the firmware of the first Internet of Things device 20 or the software running on it;

If the target update data item is included in the first update data package, the target update data item is used to update the first Internet of Things device 20, and all data items are updated from the first update data package. The target update data item is deleted, and the second update data package is obtained;

It is determined that the next Internet of Things device that needs to be updated is the second Internet of Things device 30, and the second update data packet is sent to the second Internet of Things device 30.

Optionally, based on the first Internet of Things device 20 shown in FIG. 18, the at least one processor 208 is further configured to: when executing the executable instruction:

If the target update data item is not included in the first update data packet, then determine whether there is an IoT device that needs to be updated in the network topology. If there is an IoT device that needs to be updated, determine the next IoT device that needs to be updated as the first The third Internet of Things device 40, and the first update data packet is sent to the third Internet of Things device 40.

For each update data item included in the first update data packet, if the target device address included in the update data item is the same as the device address of the first Internet of Things device 20, then the update data item is determined as the target update data item .

Acquire the security code and the first version number included in the target update data item, where the security code is used to verify whether the target update data item matches the first Internet of Things device 20, and the first version number is used to identify the target update data item version;

Acquiring the second version number of the update object corresponding to the target update data item on the first Internet of Things device 20, where the update object includes the firmware of the first Internet of Things device 20 or software running on the Internet of Things;

Use the private key of the first Internet of Things device 20 to verify whether the security code matches the first Internet of Things device 20, and determine whether the first version number is higher than the second version number;

If the security code matches the first Internet of Things device 20, and the first version number is higher than the second version number, the target update data item is used to update the update object.

Acquire the next update device address included in the target update data item, where the next update device address is used to identify the second Internet of Things device 30 in the network topology;

According to the next update device address, the second update data packet is sent to the second Internet of Things device 30.

Determine the target transmission path, where the target transmission path is a path connecting the first Internet of Things device 20 and each fourth Internet of Things device in the network topology, and there is a first update data packet for updating each fourth Internet of Things device The updated data item;

Determine a fourth Internet of Things device closest to the first Internet of Things device 20 in the target transmission path as the third Internet of Things device 40;

The first update data packet is sent to the third Internet of Things device 40.

The present invention also provides a computer-readable medium that stores instructions for causing a computer to execute the device update method described herein. Specifically, a system or device equipped with a storage medium may be provided, and the software program code for realizing the function of any one of the above embodiments is stored on the storage medium, and the computer (or CPU or MPU of the system or device) ) Read and execute the program code stored in the storage medium.

In this case, the program code itself read from the storage medium can realize the function of any one of the above embodiments, so the program code and the storage medium storing the program code constitute a part of the present invention.

Examples of storage media used to provide program codes include floppy disks, hard disks, magneto-optical disks, optical disks (such as CD-ROM, CD-R, CD-RW, DVD-ROM, DVD-RAM, DVD-RW, DVD+RW), Magnetic tape, non-volatile memory card and ROM. Alternatively, the program code can be downloaded from the server computer via a communication network.

In addition, it should be clear that not only the program code read by the computer can be executed, but also some or all of the actual operations can be completed by the operating system operating on the computer through instructions based on the program code, so as to realize the above-mentioned embodiments. Function of any one of the embodiments.

In addition, it can be understood that the program code read from the storage medium is written to the memory provided in the expansion board inserted into the computer or to the memory provided in the expansion unit connected to the computer, and then the program code is based on The instructions cause the CPU installed on the expansion board or the expansion unit to perform part or all of the actual operations, so as to realize the function of any one of the above-mentioned embodiments.

It should be noted that not all steps and modules in the above-mentioned processes and system structure diagrams are necessary, and some steps or modules can be ignored according to actual needs. The execution order of each step is not fixed, and can be adjusted as needed. The system structure described in the foregoing embodiments may be a physical structure or a logical structure. That is, some modules may be implemented by the same physical entity, or some modules may be implemented by multiple physical entities, or may be implemented by multiple physical entities. Some components in independent devices are implemented together.

In the above embodiments, the hardware unit can be implemented mechanically or electrically. For example, a hardware unit may include a permanent dedicated circuit or logic (such as a dedicated processor, FPGA or ASIC) to complete the corresponding operation. The hardware unit may also include programmable logic or circuits (such as general-purpose processors or other programmable processors), which may be temporarily set by software to complete corresponding operations. The specific implementation mode (mechanical method, or dedicated permanent circuit, or temporarily set circuit) can be determined based on cost and time considerations.

The present invention has been shown and described in detail through the drawings and preferred embodiments above. However, the present invention is not limited to these disclosed embodiments. Based on the above multiple embodiments, those skilled in the art can know that the above different embodiments can be combined. The code review method in, obtains more embodiments of the present invention, and these embodiments are also within the protection scope of the present invention.

Claims

The device update method is characterized in that it includes:

A first Internet of Things device (20) located in a network topology receives a first update data packet, wherein the first update data packet includes at least one update data item;

Detecting whether the first update data package includes a target update data item, wherein the target update data item is used to update the firmware of the first Internet of Things device (20) or the software running on it;

If the first update data packet includes the target update data item, then

Update the first Internet of Things device (20) by using the target update data item;

Delete the target update data item from the first update data package to obtain a second update data package;

If the second update data packet includes at least one of the update data items, it is determined whether there is an IoT device that needs to be updated in the network topology, and if there is an IoT device that needs to be updated, then

It is determined that the next Internet of Things device that needs to be updated is the second Internet of Things device (30), and the second update data packet is sent to the second Internet of Things device (30).
The method according to claim 1, wherein after the detecting whether the first update data packet includes a target update data item, the method further comprises:

If the target update data item is not included in the first update data packet, it is determined whether there is an IoT device that needs to be updated in the network topology, and if there is an IoT device that needs to be updated, then

The next Internet of Things device that needs to be updated is determined as the third Internet of Things device (40), and the first update data packet is sent to the third Internet of Things device (40).
The method according to claim 1 or 2, wherein the detecting whether a target update data item is included in the first update data packet comprises:

For each of the update data items included in the first update data packet, if the target device address included in the update data item is the same as the device address of the first Internet of Things device (20), the update The data item is determined as the target update data item.
The method according to claim 1 or 2, wherein said updating said first Internet of Things device (20) using said target update data item comprises:

Acquire the security code and the first version number included in the target update data item, wherein the security code is used to verify whether the target update data item matches the first Internet of Things device (20), and The first version number is used to identify the version of the target update data item;

Acquire the second version number of the update object corresponding to the target update data item on the first Internet of Things device (20), wherein the update object includes the firmware of the first Internet of Things device (20) Or software running on the Internet of Things;

Use the private key of the first Internet of Things device (20) to verify whether the security code matches the first Internet of Things device (20), and determine whether the first version number is higher than the second version number;

If the security code matches the first Internet of Things device (20), and the first version number is higher than the second version number, use the target update data item to update the update object .
The method according to any one of claims 1 to 4, wherein the sending the second update data packet to the second Internet of Things device (30) comprises:

Acquiring the next update device address included in the target update data item, where the next update device address is used to identify the second Internet of Things device (30) in the network topology;

According to the next update device address, the second update data packet is sent to the second Internet of Things device (30).
The method according to claim 2, wherein the sending the first update data packet to the third Internet of Things device (40) comprises:

Determine a target transmission path, where the target transmission path is a path connecting the first Internet of Things device (20) and each fourth Internet of Things device in the network topology, and the first update data packet contains information for The update data item for updating each of the fourth Internet of Things device;

Determining one of the fourth IoT devices closest to the first IoT device (20) in the target transmission path as the third IoT device (40);

The first update data packet is sent to the third Internet of Things device (40).
The first Internet of Things device (20) is characterized in that it comprises:

A data packet receiving module (201) for receiving a first update data packet, wherein the first update data packet includes at least one update data item;

A data packet detection module (202) for detecting whether the first update data packet received by the data packet receiving module (201) includes a target update data item, wherein the target update data item is used for Updating the firmware of the first Internet of Things device (20) or the software running on it;

A device update module (203) is configured to use the target update data item to compare the first update data item when the data packet detection module (202) determines that the first update data packet includes the target update data item. IoT devices (20) are updated;

A data package update module (204) for updating the target data from the first update data package after the device update module (203) updates the first Internet of Things device (20) Item is deleted, and the second update data package is obtained;

A first data packet sending module (205), configured to include at least one of the new data items in the second update data packet obtained by the data packet update module (204), and the network topology exists In the case of an Internet of Things device that needs to be updated, determine the next Internet of Things device that needs to be updated as the second Internet of Things device (30), and send the second update data packet to the second Internet of Things device (30) ).
The first Internet of Things device (20) according to claim 7, further comprising:

A second data packet sending module (206) is used to determine that the first update data packet does not include the target update data item and that there is a need to update the network topology when the data packet detection module (202) determines In the case of the Internet of Things device, determine the next Internet of Things device to be updated as the third Internet of Things device (40), and send the first update data packet to the third Internet of Things device (40).
The first Internet of Things device (20) according to claim 7 or 8, characterized in that:

The data packet detection module (202) is configured to, for each of the update data items included in the first update data packet, if the target device address included in the update data item and the first Internet of Things device (20) If the device addresses are the same, the update data item is determined as one of the target update data items.
The first Internet of Things device (20) according to claim 7 or 8, wherein the device update module (203) comprises:

A first information acquisition unit (2031) for acquiring the security code and the first version number included in the target update data item, wherein the security code is used to verify whether the target update data item is the same as the first version number An Internet of Things device (20) matches, and the first version number is used to identify the version of the target update data item;

A second information acquisition unit (2032), configured to acquire the second version number of the update object corresponding to the target update data item on the first Internet of Things device (20), wherein the update object includes Firmware of the first Internet of Things device (20) or software running on the Internet of Things;

An information matching unit (2033) for verifying whether the security code acquired by the first information acquisition unit (2031) is consistent with the first Internet of Things device (20) using the private key The device (20) matches, and determines whether the first version number acquired by the first information acquisition unit (2031) is higher than the second version number acquired by the second information acquisition unit (2032) ；

An object update unit (2034) for determining, in the information matching unit (2033), that the security code included in the target update data item matches the first Internet of Things device (20), and the When the first version number included in the target update data item is higher than the second version number, the target update data item is used to update the update object.
The first Internet of Things device (20) according to any one of claims 7 to 10, wherein the first data packet sending module (205) comprises:

An address acquisition unit (2051) for acquiring the address of the next update device included in the target update data item, where the address of the next update device is used to compare the third Internet of Things address in the network topology Equipment (40) for identification;

A first sending unit (2052), configured to send the second update data packet to the second Internet of Things device (30) according to the address of the next update device acquired by the address acquisition unit (2051) ).
The first Internet of Things device (20) according to claim 8, wherein the second data packet sending module (206) comprises:

A path determination unit (2061) for determining a target transmission path, where the target transmission path is a path connecting the first IoT device (20) and each fourth IoT device in the network topology, so The first update data packet contains the update data item used to update each of the fourth Internet of Things device;

A device screening unit (2062) for determining the fourth Internet of Things device that is closest to the first Internet of Things device (20) in the target transmission path determined by the path determination unit (2061) Is the third Internet of Things device (40);

A second sending unit (2063) is configured to send the first update data packet to the third Internet of Things device (40) determined by the device screening unit (2062).
The first Internet of Things device (20) is characterized by comprising: at least one memory (207) and at least one processor (208);

The at least one memory (207) is used to store machine-readable programs;

The at least one processor (208) is configured to invoke the machine-readable program to execute the method according to any one of claims 1 to 6.
The device update system is characterized by comprising: an update server (10) and at least two first Internet of Things devices (20) according to any one of claims 7 to 13;

The at least two first Internet of Things devices (20) are sequentially connected in the same network topology, and the update server (10) is connected to one of the first Internet of Things devices (20) located at the end;

The update server (10) is configured to send an update data packet including at least one update data item to the connected first Internet of Things device (20).
A computer-readable medium, wherein computer instructions are stored on the computer-readable medium, and when the computer instructions are executed by a processor, the processor executes the method according to any one of claims 1 to 6 .