CN118859754A - Device control method, device, electronic device and storage medium - Google Patents

Abstract

The embodiment of the invention provides a control method and device of equipment, electronic equipment and a storage medium, and relates to the technical field of intelligent home, wherein the method comprises the following steps: responding to target equipment in a working scene to trigger subscription of a cancel topic, and acquiring a target topic of the cancel topic of the target equipment; executing subscription management and control operation for the target equipment according to the current topic type corresponding to the target topic, and generating management and control information for the target equipment; sending a management and control message to the target equipment, wherein the management and control message is used for indicating whether the target equipment is allowed or not to be allowed to cancel subscription to the target theme; and receiving an execution log aiming at the management and control message and sent by the target equipment, and performing type adjustment on the target topic according to the execution log to obtain a target topic type corresponding to the target topic, so that flexibility of topic subscription, system operation stability and information security are improved.

Description

Device control method, device, electronic device and storage medium

Technical Field

The present invention relates to the field of smart home technology, and in particular to a device control method, a device control apparatus, an electronic device and a computer-readable storage medium.

Background Art

Smart home systems are gradually becoming a part of modern life. They integrate advanced information technology and Internet of Things technology to connect traditional home appliances to the Internet to achieve automated, intelligent and convenient home management. For smart home systems, the core is to achieve data exchange and remote control between devices through network communication protocols. In practical applications, smart home devices need to be securely managed to prevent unauthorized subscription to sensitive information or unauthorized control instructions from being sent. For example, a device may need to subscribe to a specific topic to receive control instructions or status updates, but should not subscribe to other irrelevant topics. The server must be able to dynamically manage the subscription permissions of the device to ensure that the device can only subscribe to the topics it needs, thereby avoiding security risks and privacy leaks.

Summary of the invention

The embodiments of the present invention provide a device control method, apparatus, electronic device and computer-readable storage medium to solve or partially solve the problems of poor flexibility, poor system stability and low security in information subscription during the control process of smart home devices.

An embodiment of the present invention discloses a method for controlling a device, including:

Step 1: In response to a target device in a working scenario triggering cancellation of a subscription to a topic, obtaining a target topic that the target device cancels its subscription;

Step 2: Execute a subscription control operation for the target device according to the current topic type corresponding to the target topic, and generate a control message for the target device;

Step 3: Send a control message to the target device, where the control message is used to indicate whether the target device is allowed or not to cancel the subscription to the target topic;

Step 4: Receive the execution log for the management and control message sent by the target device, adjust the type of the target topic according to the execution log, obtain the target topic type corresponding to the target topic, and return to step 1.

In some optional embodiments, performing a subscription control operation for the target device according to the current topic type corresponding to the target topic to generate a control message for the target device includes:

If the target topic is currently a non-critical topic, a subscription cancellation confirmation message for the target topic is generated, and the subscription cancellation confirmation message is sent to the target device, wherein the subscription cancellation confirmation message is used to instruct the target device to confirm the cancellation of the subscription to the target topic, and the non-critical topic is a topic whose usage frequency is less than or equal to a preset threshold;

A confirmation message for the subscription cancellation confirmation message sent by the target device is received, the subscription of the target device to the target topic is canceled, and a subscription cancellation message for the confirmation message is generated, wherein the subscription cancellation message is used to indicate that the target device is allowed to cancel the subscription to the target topic.

In some optional embodiments, performing a subscription control operation for the target device according to the current topic type corresponding to the target topic and generating a control message for the target device further includes:

If the target topic is currently a critical topic, obtaining a correlation degree between the target topic and the work scenario, the correlation degree being used to characterize the impact of prohibiting cancellation of subscription to the target topic on the execution of the target device;

If the association degree is less than or equal to a preset condition threshold, a prohibition cancellation message for the target topic is generated and sent to the target device, where the prohibition cancellation message is used to not allow the target device to cancel its subscription to the target topic.

In some optional embodiments, performing a subscription control operation for the target device according to the current topic type corresponding to the target topic and generating a control message for the target device further includes:

If the association degree is greater than a preset condition threshold, canceling the subscription of the target device to the target topic, and generating a subscription cancellation message for the confirmation message;

The target device is enabled to communicate with other devices in the working scenario, and the subscription cancellation message is sent to the target device.

In some optional embodiments, obtaining the degree of association between the target subject and the work scenario includes:

Obtaining device operation logs, subject data flow, and fault reports corresponding to the target device;

The device operation log, the subject data flow and the fault report are used to analyze the correlation between the target subject and the work scenario to obtain the correlation degree between the target subject and the work scenario.

In some optional embodiments, the execution log includes at least a first execution log and a second execution log, the first execution log is a log generated by the target device performing a device operation within a preset time period after the target device cancels the subscription to the target topic, and the second execution log is a log generated by the target device performing a device operation within a preset time period before the target device cancels the subscription to the target topic, and the type of the target topic is adjusted according to the execution log to obtain the target topic type corresponding to the target topic, including:

Acquire, from the first execution log, a first device operation executed by the target device and a first success rate corresponding to executing the first device operation;

Acquire, from the second execution log, a second device operation executed by the target device and a second success rate corresponding to executing the second device operation;

Matching the first device operation with the second device operation and matching the first success rate with the second success rate to obtain a similarity between the first execution log and the second execution log;

If the similarity is less than or equal to a preset similarity threshold, the target topic is adjusted from a non-critical topic to a critical topic.

In some optional embodiments, in response to the target device in the working scenario triggering the cancellation of the subscription of the topic, obtaining the target topic that the target device cancels the subscription includes:

A subscription cancellation request sent by a target device in a working scenario is received, or, in response to not receiving a report message from the target device within a preset time period, a target topic for the target device to cancel its subscription is obtained.

The embodiment of the present invention further discloses a control device for a device, comprising:

A topic acquisition module, configured to, in response to a target device in a working scenario triggering cancellation of a topic subscription, acquire a target topic that the target device has unsubscribed from;

A message generation module, used to perform a subscription control operation for the target device according to the current topic type corresponding to the target topic, and generate a control message for the target device;

A message sending module, used for sending a control message to the target device, wherein the control message is used for indicating whether the target device is allowed or not to cancel the subscription to the target topic;

A topic adjustment module is used to receive the execution log for the management and control message sent by the target device, adjust the type of the target topic according to the execution log, obtain the target topic type corresponding to the target topic, return the subscription cancellation triggered by the target device in the working scenario, and obtain the target topic that the target device cancels its subscription.

In some optional embodiments, the message generation module is specifically used to:

If the target topic is currently a non-critical topic, a subscription cancellation confirmation message for the target topic is generated, and the subscription cancellation confirmation message is sent to the target device, wherein the subscription cancellation confirmation message is used to instruct the target device to confirm the cancellation of the subscription to the target topic, and the non-critical topic is a topic whose usage frequency is less than or equal to a preset threshold;

A confirmation message for the subscription cancellation confirmation message sent by the target device is received, the subscription of the target device to the target topic is canceled, and a subscription cancellation message for the confirmation message is generated, wherein the subscription cancellation message is used to indicate that the target device is allowed to cancel the subscription to the target topic.

In some optional embodiments, the message generation module is further configured to:

If the target topic is currently a critical topic, obtaining a correlation degree between the target topic and the work scenario, the correlation degree being used to characterize the impact of prohibiting cancellation of subscription to the target topic on the execution of the target device;

If the association degree is less than or equal to a preset condition threshold, a prohibition cancellation message for the target topic is generated and sent to the target device, where the prohibition cancellation message is used to not allow the target device to cancel its subscription to the target topic.

In some optional embodiments, the message generation module is further configured to:

If the association degree is greater than a preset condition threshold, canceling the subscription of the target device to the target topic, and generating a subscription cancellation message for the confirmation message;

The target device is enabled to communicate with other devices in the working scenario, and the subscription cancellation message is sent to the target device.

In some optional embodiments, the message generation module is further configured to:

Obtaining device operation logs, subject data flow, and fault reports corresponding to the target device;

The device operation log, the subject data flow and the fault report are used to analyze the correlation between the target subject and the work scenario to obtain the correlation degree between the target subject and the work scenario.

In some optional embodiments, the execution log includes at least a first execution log and a second execution log, the first execution log is a log generated by executing a device operation within a preset time after the target device cancels its subscription to the target topic, and the second execution log is a log generated by executing a device operation within a preset time before the target device cancels its subscription to the target topic, and the topic adjustment module is specifically used to:

Acquire, from the first execution log, a first device operation executed by the target device and a first success rate corresponding to executing the first device operation;

Acquire, from the second execution log, a second device operation executed by the target device and a second success rate corresponding to executing the second device operation;

Matching the first device operation with the second device operation and matching the first success rate with the second success rate to obtain a similarity between the first execution log and the second execution log;

If the similarity is less than or equal to a preset similarity threshold, the target topic is adjusted from a non-critical topic to a critical topic.

In some optional embodiments, the theme acquisition module is specifically used to:

A subscription cancellation request sent by a target device in a working scenario is received, or, in response to not receiving a report message from the target device within a preset time period, a target topic for the target device to cancel its subscription is obtained.

The embodiment of the present invention further discloses an electronic device, comprising a processor, a communication interface, a memory and a communication bus, wherein the processor, the communication interface and the memory communicate with each other via the communication bus;

The memory is used to store computer programs;

The processor is used to implement the method described in the embodiment of the present invention when executing the program stored in the memory.

The embodiment of the present invention further discloses a computer-readable storage medium on which instructions are stored. When executed by one or more processors, the processors are enabled to execute the method described in the embodiment of the present invention.

The embodiments of the present invention include the following advantages:

In an embodiment of the present invention, the device subscription authority can be uniformly managed by the server, and the target device in the working scenario triggers the cancellation of the subscription of the topic, and obtains the target topic that the target device cancels the subscription. Then, the subscription management and control operation for the target device can be performed according to the current topic type corresponding to the target topic, and a management and control message for the target device is generated. Then, the management and control message is sent to the target device, and the management and control message is used to indicate whether the target device is allowed or not to cancel the subscription to the target topic, and the execution log for the management and control message sent by the target device is received. The type of the target topic is adjusted according to the execution log, and the target topic type corresponding to the target topic is obtained. In this way, the server ensures security by dynamically managing the subscription authority of the device, and when the server indicates that the cancellation of the subscription is not allowed, the target device can continue to operate based on the target topic, thereby ensuring the stability of the device operation. When the server indicates that the cancellation of the subscription is allowed, it can effectively reduce irrelevant topic subscriptions, optimize resource utilization, and dynamically adjust the topic type by obtaining the execution log, optimize the device operation, and achieve continuous optimization, which is conducive to more targeted management and control of the device.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a flow chart of a method for controlling a device provided in an embodiment of the present invention;

FIG2 is a schematic diagram of a flow chart of device control provided in an embodiment of the present invention;

3 is a structural block diagram of a control device of a device provided in an embodiment of the present invention;

FIG. 4 is a block diagram of an electronic device provided in an embodiment of the present invention.

DETAILED DESCRIPTION

In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

As an example, in practical applications, smart home devices need to be securely managed to prevent unauthorized subscriptions to sensitive information or unauthorized control instructions. For example, a device may need to subscribe to a specific topic to receive control instructions or status updates, but should not subscribe to other unrelated topics. The server must be able to dynamically manage the subscription permissions of the device to ensure that the device can only subscribe to the topics it needs, thereby avoiding security risks and privacy leaks.

In this regard, in the present invention, the device subscription rights can be uniformly managed by the server, and the subscription cancellation of the topic can be triggered in response to the target device in the working scenario, and the target topic that the target device cancels the subscription is obtained. Then, the subscription management and control operation for the target device can be performed according to the current topic type corresponding to the target topic, and a management and control message for the target device is generated. Then, the management and control message is sent to the target device, and the management and control message is used to indicate whether the target device is allowed or not to cancel the subscription to the target topic, and the execution log for the management and control message sent by the target device is received. The type of the target topic is adjusted according to the execution log, and the target topic type corresponding to the target topic is obtained. In this way, the server ensures security by dynamically managing the subscription rights of the device, and when the server indicates that the subscription cancellation is not allowed, the target device can continue to operate based on the target topic, ensuring the stability of the device operation. When the server indicates that the subscription cancellation is allowed, it can effectively reduce irrelevant topic subscriptions, optimize resource utilization, and dynamically adjust the topic type by obtaining the execution log, optimize the device operation, and achieve continuous optimization, which is conducive to more targeted management and control of the device.

1, a flow chart of a method for controlling a device provided in an embodiment of the present invention is shown, which may specifically include the following steps:

Step 1: In response to a target device in a working scenario triggering cancellation of a subscription to a topic, obtaining a target topic that the target device cancels its subscription;

In an embodiment of the present invention, during the control process of smart home devices, the server can communicate with the smart home devices through MQTT (Message Queuing Telemetry Transport) to achieve data transmission, remote control, security management, event notification and management, etc. between devices.

For example, in the process of data transmission, it can be used to transmit sensor data. Smart home devices publish sensor data such as temperature, humidity, and light through MQTT, which are identified and published in the form of topics. Servers can subscribe to these topics to obtain environmental data in real time for monitoring and control. They can also be used to transmit status feedback data of smart home devices. Devices can regularly publish status updates to specified topics, such as device online status, power status, etc., so that the server can understand the operation of the device in real time.

In the process of remote control, it can be used to transmit control instructions. The server sends control instructions to the device through MQTT, such as turning on and off lights, adjusting temperature, etc. The device subscribes to the corresponding control topic to receive and execute the instructions sent by the server to realize the remote control function.

In the process of security management, the server can control the subscription permissions of smart home devices. To prevent unauthorized access and operation, the server needs to manage the subscription permissions of the devices. This involves dynamically adjusting the list of topics that the device can subscribe to, ensuring that the device can only subscribe to the information it needs, while avoiding the leakage of sensitive information and security risks.

In the process of event notification and management, smart home devices can publish event notifications, such as alarms, error messages, etc., to specific topics so that the server can respond and handle related events in a timely manner.

In the above process, the smart home device and the server communicate through the MQTT protocol, and the server can monitor the MQTT topic requested by the smart home device, and the smart home device can respond to the server's required field reporting request. Therefore, through effective MQTT protocol application and technical implementation, the smart home device can achieve effective data exchange and remote control, while ensuring security and user privacy, and adapting to the ever-evolving Internet of Things environment and needs.

It should be noted that the fields that must be reported can be set by different manufacturers for smart home devices. For example, taking air-conditioning equipment as an example, it can be assumed that the keywords that must be reported are: network status, sub-device information, etc.; when the server issues an instruction, the air-conditioning needs to report the main status of the equipment (temperature, mode, wind speed and other control results), etc. The present invention does not limit this.

In some feasible implementations, during the operation of smart home devices, with the iterative update of device hardware or software, or the iterative increase of server versions, it may happen that smart home devices fail to meet the normal MQTT information exchange with the new version of the server in a timely manner. In this regard, in an embodiment of the present invention, an example is given of an example of a server with a higher priority to manage and control the MQTT topics that smart home devices need to subscribe to. Through the server's management and control of smart home devices, it is avoided that the smart home devices cancel the corresponding keywords, resulting in improper device operation or reporting errors. Optionally, the MQTT topic may include sensor data transmission, control instruction transmission, status feedback, event notification, and firmware upgrade, etc., which are not limited by the present invention.

In a specific implementation, for a corresponding target smart home device (hereinafter referred to as a target device), when it is in a corresponding working scenario, if the server detects that the target device triggers the cancellation of the subscription of the topic, the target topic that the target device cancels the subscription can be obtained, so that the server can perform corresponding processing after authenticating the target device. Among them, the working scenario can be a smart furniture environment or condition, such as away mode, sleep mode, working mode, etc. In the corresponding working scenario, the smart home device needs to perform specific tasks and subscribe to the corresponding MQTT topic, such as monitoring the temperature at home, controlling the lights, etc., and the present invention does not limit this.

It should be noted that the cancellation of the subscription of the topic triggered by the target device may be caused by a program failure of the device, and for the server, it can be regarded as the target device actively initiating the cancellation of the subscription topic. In some examples, the server can receive a cancellation request sent by a target device in a working scenario, or, in response to not receiving a report message from the target device within a preset time, obtain the target topic that the target device cancels the subscription. Among them, the server can obtain the device heartbeat time between the target device and the target device. If the report information sent by the target device is not received within n device heartbeat times, it can be determined that the target device has not subscribed to the topic. The heartbeat detection can effectively avoid the situation where device A cancels all topics. Specifically, if the target device actively initiates the cancellation request, the server can obtain the target topic corresponding to the cancellation request; if the server detects that the target device has not reported information within the preset time, it can be determined that the target device has canceled the subscription of all topics, thereby determining the topic that the target device has canceled the subscription in an active and passive manner, effectively detecting the topic subscription of the target device, and helping to timely discover the state change of the target device. At the same time, the server is also conducive to more effective management of resources through real-time monitoring and automatic determination mechanisms.

Step 2: Execute a subscription control operation for the target device according to the current topic type corresponding to the target topic, and generate a control message for the target device;

For the server, it can create a corresponding whitelist according to the type of MQTT topic, and through the whitelist, when the target device triggers the cancellation of the topic subscription, determine whether to allow the target device to cancel the subscription of the corresponding topic, and perform the subscription control operation for the target device, and generate a control message for the target device, so that the target device can perform corresponding operations according to the control message, such as canceling the topic subscription, maintaining the topic subscription, reporting information, etc. Among them, the control message can be used to indicate whether the target device is allowed or not to cancel the subscription to the target topic, and the control message can be a subscription cancellation message or a cancellation prohibition message, etc.

It should be noted that, for MQTT topics, the server can divide the types of different MQTT topics according to the work scenarios to obtain a whitelist corresponding to each work scenario. For example, in work scenario A, the MQTT topics involved include topic ①, topic ②, topic ③, etc., then the usage frequency of each topic in work scenario A can be obtained, and the MQTT topics with a usage frequency less than or equal to the preset threshold can be regarded as non-critical topics, and the MQTT topics with a usage frequency greater than the preset threshold can be regarded as critical topics. Topics ①, topic ②, topic ③, etc. can be divided into non-critical topics and critical topics, including topic ① and topic ② can be classified as non-critical topics, and topic ③ can be classified as a critical topic. Therefore, by configuring the corresponding whitelist on the server, the MQTT topics can be managed uniformly, which can ensure the stable operation of each device while reducing the probability of execution failure, improper operation, etc. of the device due to lack of corresponding information.

In some examples, assume work scenario A: home security monitoring. In this scenario, the smart home system is mainly responsible for monitoring the security status of the home, including door and window sensors, smoke alarms, cameras and other devices. Among them, the MQTT topic division can include:

Topic ①: home/security/door (door and window sensor status);

Topic ②: home/security/smoke (smoke alarm status);

Topic ③: home/security/camera (real-time video stream from camera).

The server can then obtain the usage frequency analysis corresponding to each topic: the usage frequency of topics ① and ② is higher because door and window sensors and smoke alarms need to report their status in real time; the usage frequency of topic ③ is relatively low because the real-time video stream of the camera is usually only turned on when needed.

Based on the above usage frequency, each MQTT topic can be divided into:

Non-critical topics: Topic ① and Topic ②. Although these topics are frequently used, losing some data will not have a significant impact on home security.

Key topic: Topic ③. The real-time video stream of the camera is key data because it is directly related to the real-time monitoring of home security.

In other examples, assume work scenario B: home energy management, in which the smart home system is mainly responsible for managing the energy use of the home, including smart sockets, smart lamps, temperature controllers and other devices. Among them, the MQTT topic division can include:

Topic ①: home/energy/plug (smart socket status);

Topic ②: home/energy/light (smart lighting status);

Topic ③: home/energy/thermostat (temperature controller status).

The server can then obtain the usage frequency analysis corresponding to each topic: the usage frequency of topics ① and ② is higher because smart sockets and smart lamps require real-time control and monitoring; the usage frequency of topic ③ is relatively low because the temperature controller is usually adjusted within a specific time period.

Based on the above usage frequency, each MQTT topic can be divided into:

Non-critical topics: Topic ① and Topic ②. Although these topics are frequently used, the loss of some data will not have a significant impact on energy management.

Key topic: Topic ③. The status of the thermostat is key data because it is directly related to the comfort and energy consumption of the home.

Through this division, the smart home system can manage MQTT topics more effectively, ensuring the real-time and reliability of critical data, while optimizing resource allocation for non-critical topics and improving the overall performance and stability of the system.

In some feasible implementations, after determining the target topic for unsubscribing the target device, the server can determine whether to allow the target device to unsubscribe based on the topic type corresponding to the target topic; if the target topic is currently a non-critical topic, a subscription cancellation confirmation message for the target topic is generated, and the subscription cancellation confirmation message is sent to the target device, where the subscription cancellation confirmation message is used to instruct the target device to confirm the unsubscription of the target topic; then a confirmation message for the subscription cancellation confirmation message sent by the target device can be received, the target device's subscription to the target topic can be canceled, and a subscription cancellation message for the confirmation message is generated, where the subscription cancellation message is used to indicate that the target device is allowed to cancel its subscription to the target topic.

If the target topic is currently a critical topic, the degree of association between the target topic and the work scenario is obtained, and then the server can judge the impact of prohibiting the cancellation of the subscription to the target topic on the execution of the target device through the degree of association. If the degree of association is less than or equal to the preset condition threshold, a prohibition cancellation message for the target topic is generated, and the prohibition cancellation message is sent to the target device. The prohibition cancellation message is used to not allow the target device to cancel the subscription to the target topic; if the degree of association is greater than the preset condition threshold, the subscription of the target device to the target topic is canceled, and a subscription cancellation message is generated for the confirmation message. Then, the target device is enabled to communicate with other devices in the work scenario, and a subscription cancellation message is sent to the target device. By enabling the target device to share subscriptions with other devices, the target device is guaranteed to operate normally and report.

It should be noted that, for target topics that allow target devices to cancel subscriptions, the server can first send a corresponding subscription cancellation confirmation message to the target device, so as to determine whether the target device cancels the subscription through further confirmation operations, reduce the possibility of misoperation, and ensure that the target device can timely understand the changes in subscription status; while in the process of prohibiting the target device from canceling the subscription, the server can first evaluate whether the cancellation of the subscription to the target topic has an impact on the device execution of the target device. The flexible adaptive mechanism enables the system to adjust the subscription status between devices in different working scenarios to ensure the stability and reliability of device operation. For example, assuming that the device uses protocol V1, the server updates the protocol V2 after a period of time. The V2 version makes some modifications to the level of the reported topic of the V1 version, that is, it is not required in the V1 version but it is a required field in the V2 version, then the device is not allowed to cancel the subscription.

Optionally, for the correlation between the subject and the work scenario, the server can obtain the device operation log, subject data traffic and fault report corresponding to the target device, and then use the device operation log, subject data traffic and fault report to analyze the correlation between the target subject and the work scenario to obtain the degree of correlation between the target subject and the work scenario, and thus decide whether to allow cancellation of the subscription by evaluating the degree of correlation between the target subject and the work scenario, thereby ensuring the stability and reliability of critical data and preventing the loss of critical data due to misoperation or system failure.

In some examples, the server can first collect device operation logs, and deploy a logging module on the target device to record the device's operation behavior, including subscription, publishing, and unsubscription operations. The target device can regularly upload the device operation log to the server and store it in the log database. In addition, a traffic monitoring module can be deployed on the MQTT proxy server to monitor the data traffic of each topic in real time, including the amount of data published and subscribed, and record the topic data traffic in the traffic database, including timestamps, topic names, data volumes, and other information. In addition, a fault detection module can also be deployed in the system to monitor the system's operating status in real time, detect fault events, and record fault reports in the fault database, including fault time, fault type, affected topics, and other information.

After obtaining the corresponding data, the server can first pre-process the collected device operation logs, subject data traffic and fault reports, clean and format the data, and then use correlation analysis algorithms, such as correlation coefficients, mutual information, etc., to calculate the degree of correlation between the target subject and the work scene, and analyze the device operation logs to count the operation frequency and operation type of the target subject in different work scenes; analyze the subject data traffic to count the data volume and data change trend of the target subject in different work scenes; analyze the fault report to count the fault frequency and fault type of the target subject in different work scenes. After the analysis obtains the corresponding processing results, the server can further calculate the degree of correlation between the target subject and the work scene based on the results of the correlation analysis algorithm, so as to further set the threshold of the correlation degree, and then judge whether the correlation between the target subject and the work scene meets the preset conditions based on the threshold.

Step 3: Send a control message to the target device, where the control message is used to indicate whether the target device is allowed or not to cancel the subscription to the target topic;

After the server determines whether the target device can cancel its subscription to the target topic according to the topic type, it can generate a corresponding control message and send the control message to the target device, so as to indicate through the control message whether the target device is allowed or not to cancel its subscription to the target topic. If the control message is a cancellation message, the target device can cancel its subscription to the target topic; if the control message is a prohibition cancellation message, the target device needs to maintain its subscription to the target topic. Thus, the server ensures security by dynamically managing the subscription permissions of the device. When the server indicates that cancellation of subscription is not allowed, the target device can continue to operate based on the target topic, thereby ensuring the stability of the device operation. When the server indicates that cancellation of subscription is allowed, it can effectively reduce irrelevant topic subscriptions and optimize resource utilization.

Step 4: Receive the execution log for the management and control message sent by the target device, adjust the type of the target topic according to the execution log, obtain the target topic type corresponding to the target topic, and return to step 1.

For the target device, after it performs the corresponding operation according to the management and control message, it can also continue to collect corresponding log data according to the device operation to obtain the corresponding execution log, and then report the execution log to the server so that the server can adjust the topic type corresponding to the MQTT topic according to the execution log. For example, the type of the target topic can be adjusted according to the execution log to obtain the target topic type corresponding to the target topic. Thus, by obtaining the execution log and dynamically adjusting the topic type, the device operation is optimized, and continuous optimization is achieved, which is conducive to more targeted management and control of the device.

In some feasible implementations, the execution log includes at least a first execution log and a second execution log, the first execution log being a log generated by executing a device operation within a preset time period after the target device cancels its subscription to the target topic, and the second execution log being a log generated by executing a device operation within a preset time period before the target device cancels its subscription to the target topic. After receiving the corresponding execution log, the server may first obtain the first device operation executed by the target device and the first success rate corresponding to the execution of the first device operation from the first execution log, and obtain the second device operation executed by the target device and the second success rate corresponding to the execution of the second device operation from the second execution log, and then match the first device operation with the second device operation and the first success rate with the second success rate to obtain the similarity between the first execution log and the second execution log, and then determine whether to adjust the topic type of the MQTT topic based on the similarity. If the similarity is less than or equal to the preset similarity threshold, it indicates that the cancellation of the subscription to the corresponding MQTT topic has an impact on the device operation of the target device, and the target topic is adjusted from a non-critical topic to a critical topic; if the similarity is greater than the preset similarity threshold, the topic type of the target topic may be kept unchanged.

Accordingly, assuming that the target topic is currently a critical topic, and the server prohibits the target device from unsubscribing from the target topic, then based on the above process, after detecting the device operating status before and after the target device is prohibited from unsubscribing, if the similarity is less than or equal to the preset similarity threshold, indicating that prohibiting unsubscribing has an impact on the device operation, the target topic can be adjusted from a critical topic to a non-critical topic; similarly, if the similarity is greater than the preset similarity threshold, indicating that the impact of prohibiting unsubscribing on the operation of the target device is reduced, the topic type of the target topic can be maintained, thereby dynamically adjusting the topic type by obtaining the execution log, optimizing the device operation, achieving continuous optimization, and facilitating more targeted management and control of the device.

In one example, suppose there is a target device (such as a smart lamp) in a smart home system, which subscribes to a target topic (such as home/lighting/living_room). The server can determine the impact of unsubscribing from the topic on the device operation by analyzing the execution log, and adjust the topic type accordingly. The specific process may include:

1. Perform log analysis

First execution log: The log generated by the device operation performed within the preset time after the target device unsubscribes from the target topic. For example, after the target device unsubscribes from the home/lighting/living_room topic, it performs the following operations: Operation A: Adjust the brightness of the living room light; Operation B: Adjust the color of the living room light. Execution success rate: The success rate of operation A is 80%; the success rate of operation B is 75%.

Second execution log: The log generated by the target device performing device operations within the preset time before unsubscribing from the target topic. For example, before unsubscribing from the home/lighting/living_room topic, the target device performed the following operations: Operation A: Adjust the brightness of the living room light; Operation B: Adjust the color of the living room light. Execution success rate: The success rate of operation A is 95%; the success rate of operation B is 90%.

2. Similarity calculation and matching

The server can first match the device operations: Operation A in the first execution log matches Operation A in the second execution log, and Operation B in the first execution log matches Operation B in the second execution log. Then, the success rate is matched: The success rate of Operation A in the first execution log (80%) matches the success rate of Operation A in the second execution log (95%), and the success rate of Operation B in the first execution log (75%) matches the success rate of Operation B in the second execution log (90%). Then, the similarity is calculated: the changes in the success rates of Operation A and Operation B are calculated to obtain the similarity. For example, the similarity calculation formula can be:

Similarity = ∑(first success rate - second success rate)/number of operations

3. Theme type adjustment

Assuming that the calculated result is a similarity of 15%, the server can further adjust the topic type based on the calculated similarity. Specifically, if the similarity is less than or equal to a preset similarity threshold (for example, 10%), it indicates that the device operation of the target device is affected after the cancellation of the subscription to the corresponding MQTT topic; if the similarity is greater than the preset similarity threshold, the topic type of the target topic can be kept unchanged.

In this example, the similarity is 15%, which is greater than the preset similarity threshold (10%), so the topic type of the target topic home/lighting/living_room is kept unchanged (non-critical topic).

Through the above analysis and adjustment, the smart home system can dynamically adjust the topic type of the MQTT topic according to the similarity of the device operation log to ensure the stability of the system and user experience. This dynamic adjustment mechanism improves the flexibility and adaptability of the system, allowing the system to better cope with various actual operating conditions.

It should be noted that the embodiments of the present invention include but are not limited to the above examples. It is understandable that those skilled in the art can also make settings according to actual needs under the guidance of the ideas of the embodiments of the present invention, and the present invention is not limited to this.

In an embodiment of the present invention, the device subscription authority can be uniformly managed by the server, and the target device in the working scenario triggers the cancellation of the subscription of the topic, and obtains the target topic that the target device cancels the subscription. Then, the subscription management and control operation for the target device can be performed according to the current topic type corresponding to the target topic, and a management and control message for the target device is generated. Then, the management and control message is sent to the target device, and the management and control message is used to indicate whether the target device is allowed or not to cancel the subscription to the target topic, and the execution log for the management and control message sent by the target device is received. The type of the target topic is adjusted according to the execution log, and the target topic type corresponding to the target topic is obtained. In this way, the server ensures security by dynamically managing the subscription authority of the device, and when the server indicates that the cancellation of the subscription is not allowed, the target device can continue to operate based on the target topic, thereby ensuring the stability of the device operation. When the server indicates that the cancellation of the subscription is allowed, it can effectively reduce irrelevant topic subscriptions, optimize resource utilization, and dynamically adjust the topic type by obtaining the execution log, optimize the device operation, and achieve continuous optimization, which is conducive to more targeted management and control of the device.

In order to enable those skilled in the art to better understand the technical solutions in the embodiments of the present invention, the following examples are used for exemplary description:

2 , a schematic diagram of the process of device control provided in an embodiment of the present invention is shown, wherein the server and the device subscribe to MQTT topics with each other, and the server can monitor the MQTT topics requested by the device, and the device can respond to the server's required field reporting request.

When the server detects that device A cannot report normally or cannot subscribe to the target MQTT topic b (hereinafter referred to as topic b) during the execution of the target scenario, it may be caused by a program failure in device A. From the perspective of the server, it can be assumed that device A actively unsubscribes from topic b. After the server authenticates device A for topic b, it can perform corresponding processing:

① The server controls device A and cannot actively cancel the subscription;

②Prevent devices from actively canceling subscriptions.

For ①, when the server detects a request to cancel subscription (including situations where device A cannot report normally or cannot subscribe to topic b, etc.), it can check whether the topic b corresponding to the request to cancel subscription is a critical topic, and determine whether to allow the unsubscription operation based on the check result. Specifically, if topic b is a critical topic, the server can further determine whether prohibiting the unsubscription of topic b will affect the execution of device A. If it will not affect, device A will not be allowed to unsubscribe from topic b; if prohibiting the unsubscription of topic b will affect the operation of device A, the server can cancel device A's subscription to topic b, and at the same time open the shared subscription method of device A, allowing device A to obtain the corresponding topic message permissions for other devices in the same scenario, to ensure that the device can operate and report normally.

For ②, in the server, different permission levels can be set for different devices or clients. By checking whether the device or client has the permission to subscribe or unsubscribe, based on the query result, if the corresponding topic is a critical topic, the device is not allowed to actively unsubscribe; if the corresponding topic is a non-critical topic and the device or client has the permission to unsubscribe, the server can send an unsubscribe warning to remind the device of the importance of the topic and ask the device to confirm whether to unsubscribe. After receiving the ACK (Acknowledgment) of the device unsubscribing from the topic, the server confirms that the ACK is valid, and allows the device to unsubscribe from the topic. At the same time, the server can record and compare the log information such as the scene execution success rate and device operation in the period before and after unsubscribing from the topic. If the impact is less than a certain threshold, the topic of the device is marked as a "non-critical" topic, so as to judge that the server control device cannot actively unsubscribe based on the above example.

Through the above process, the server ensures security by dynamically managing the subscription permissions of the device, and when the server indicates that cancellation of subscription is not allowed, the target device can continue to operate based on the target topic, ensuring the stability of device operation. When the server indicates that cancellation of subscription is allowed, it can effectively reduce irrelevant topic subscriptions and optimize resource utilization. It can also dynamically adjust the topic type by obtaining the execution log, optimize device operation, and achieve continuous optimization, which is conducive to more targeted management and control of the device.

It should be noted that, for the sake of simplicity, the method embodiments are described as a series of action combinations, but those skilled in the art should be aware that the embodiments of the present invention are not limited by the order of the actions described, because according to the embodiments of the present invention, certain steps can be performed in other orders or simultaneously. Secondly, those skilled in the art should also be aware that the embodiments described in the specification are all preferred embodiments, and the actions involved are not necessarily required by the embodiments of the present invention.

3, a structural block diagram of a control device of a device provided in an embodiment of the present invention is shown, which may specifically include the following modules:

The topic acquisition module 301 is used to acquire the target topic that the target device unsubscribes from in response to the target device in the working scenario triggering the cancellation of the topic subscription;

A message generating module 302, configured to perform a subscription control operation on the target device according to a current topic type corresponding to the target topic, and generate a control message for the target device;

A message sending module 303 is used to send a control message to the target device, where the control message is used to indicate whether the target device is allowed or not to cancel the subscription to the target topic;

The topic adjustment module 304 is used to receive the execution log for the management and control message sent by the target device, adjust the type of the target topic according to the execution log, obtain the target topic type corresponding to the target topic, return the subscription cancellation triggered by the target device in the working scenario, and obtain the target topic that the target device cancels its subscription.

In some optional embodiments, the message generating module 302 is specifically used for:

If the target topic is currently a non-critical topic, a subscription cancellation confirmation message for the target topic is generated, and the subscription cancellation confirmation message is sent to the target device, wherein the subscription cancellation confirmation message is used to instruct the target device to confirm the cancellation of the subscription to the target topic, and the non-critical topic is a topic whose usage frequency is less than or equal to a preset threshold;

A confirmation message for the subscription cancellation confirmation message sent by the target device is received, the subscription of the target device to the target topic is canceled, and a subscription cancellation message for the confirmation message is generated, wherein the subscription cancellation message is used to indicate that the target device is allowed to cancel the subscription to the target topic.

In some optional embodiments, the message generating module 302 is further configured to:

If the target topic is currently a critical topic, obtaining a correlation degree between the target topic and the work scenario, the correlation degree being used to characterize the impact of prohibiting cancellation of subscription to the target topic on the execution of the target device;

If the association degree is less than or equal to a preset condition threshold, a prohibition cancellation message for the target topic is generated and sent to the target device, where the prohibition cancellation message is used to not allow the target device to cancel its subscription to the target topic.

In some optional embodiments, the message generating module 302 is further configured to:

If the association degree is greater than a preset condition threshold, canceling the subscription of the target device to the target topic, and generating a subscription cancellation message for the confirmation message;

The target device is enabled to communicate with other devices in the working scenario, and the subscription cancellation message is sent to the target device.

In some optional embodiments, the message generating module 302 is further configured to:

Obtaining device operation logs, subject data flow, and fault reports corresponding to the target device;

The device operation log, the subject data flow and the fault report are used to analyze the correlation between the target subject and the work scenario to obtain the correlation degree between the target subject and the work scenario.

In some optional embodiments, the execution log includes at least a first execution log and a second execution log, the first execution log is a log generated by executing a device operation within a preset time after the target device cancels the subscription to the target topic, and the second execution log is a log generated by executing a device operation within a preset time before the target device cancels the subscription to the target topic. The topic adjustment module 304 is specifically used to:

Acquire, from the first execution log, a first device operation executed by the target device and a first success rate corresponding to executing the first device operation;

Acquire, from the second execution log, a second device operation executed by the target device and a second success rate corresponding to executing the second device operation;

Matching the first device operation with the second device operation and matching the first success rate with the second success rate to obtain a similarity between the first execution log and the second execution log;

If the similarity is less than or equal to a preset similarity threshold, the target topic is adjusted from a non-critical topic to a critical topic.

In some optional embodiments, the theme acquisition module 301 is specifically used for:

A subscription cancellation request sent by a target device in a working scenario is received, or, in response to not receiving a report message from the target device within a preset time period, a target topic for the target device to cancel its subscription is obtained.

As for the device embodiment, since it is basically similar to the method embodiment, the description is relatively simple, and the relevant parts can be referred to the partial description of the method embodiment.

In addition, an embodiment of the present invention further provides an electronic device, including: a processor, a memory, and a computer program stored in the memory and executable on the processor. When the computer program is executed by the processor, the various processes of the control method embodiment of the above-mentioned device are implemented, and the same technical effect can be achieved. To avoid repetition, it will not be described here.

The embodiment of the present invention further provides a computer-readable storage medium, on which a computer program is stored, and when the computer program is executed by a processor, each process of the control method embodiment of the above-mentioned device is implemented, and the same technical effect can be achieved. To avoid repetition, it is not repeated here. The computer-readable storage medium is, for example, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk.

FIG. 4 is a schematic diagram of the hardware structure of an electronic device implementing various embodiments of the present invention.

The electronic device 400 includes but is not limited to: a radio frequency unit 401, a network module 402, an audio output unit 403, an input unit 404, a sensor 405, a display unit 406, a user input unit 407, an interface unit 408, a memory 409, a processor 410, and a power supply 411. Those skilled in the art will appreciate that the electronic device structure involved in the embodiments of the present invention does not constitute a limitation on the electronic device, and the electronic device may include more or fewer components than shown in the figure, or combine certain components, or arrange components differently. In the embodiments of the present invention, the electronic device includes but is not limited to a mobile phone, a tablet computer, a laptop computer, a PDA, a vehicle-mounted terminal, a wearable device, and a pedometer.

It should be understood that in the embodiment of the present invention, the radio frequency unit 401 can be used for receiving and sending signals during information transmission or communication. Specifically, after receiving downlink data from the base station, it is sent to the processor 410 for processing; in addition, uplink data is sent to the base station. Generally, the radio frequency unit 401 includes but is not limited to an antenna, at least one amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, etc. In addition, the radio frequency unit 401 can also communicate with the network and other devices through a wireless communication system.

The electronic device provides users with wireless broadband Internet access through the network module 402, such as helping users to send and receive emails, browse web pages, and access streaming media.

The audio output unit 403 can convert the audio data received by the RF unit 401 or the network module 402 or stored in the memory 409 into an audio signal and output it as sound. Moreover, the audio output unit 403 can also provide audio output related to a specific function performed by the electronic device 400 (for example, a call signal reception sound, a message reception sound, etc.). The audio output unit 403 includes a speaker, a buzzer, a receiver, etc.

The input unit 404 is used to receive audio or video signals. The input unit 404 may include a graphics processor (GPU) 4041 and a microphone 4042, and the graphics processor 4041 processes the image data of a static picture or video obtained by an image capture device (such as a camera) in a video capture mode or an image capture mode. The processed image frame can be displayed on the display unit 406. The image frame processed by the graphics processor 4041 can be stored in the memory 409 (or other storage medium) or sent via the radio frequency unit 401 or the network module 402. The microphone 4042 can receive sound and can process such sound into audio data. The processed audio data can be converted into a format output that can be sent to a mobile communication base station via the radio frequency unit 401 in the case of a telephone call mode.

The electronic device 400 also includes at least one sensor 405, such as a light sensor, a motion sensor, and other sensors. Specifically, the light sensor includes an ambient light sensor and a proximity sensor, wherein the ambient light sensor can adjust the brightness of the display panel 4061 according to the brightness of the ambient light, and the proximity sensor can turn off the display panel 4061 and/or the backlight when the electronic device 400 is moved to the ear. As a type of motion sensor, the accelerometer sensor can detect the magnitude of acceleration in each direction (generally three axes), and can detect the magnitude and direction of gravity when stationary, which can be used to identify the posture of the electronic device (such as horizontal and vertical screen switching, related games, magnetometer posture calibration), vibration recognition related functions (such as pedometer, tapping), etc.; the sensor 405 can also include a fingerprint sensor, a pressure sensor, an iris sensor, a molecular sensor, a gyroscope, a barometer, a hygrometer, a thermometer, an infrared sensor, etc., which will not be repeated here.

The display unit 406 is used to display information input by the user or information provided to the user. The display unit 406 may include a display panel 4061, which may be configured in the form of a liquid crystal display (LCD), an organic light-emitting diode (OLED), or the like.

The user input unit 407 can be used to receive input digital or character information, and to generate key signal input related to user settings and function control of the electronic device. Specifically, the user input unit 407 includes a touch panel 4071 and other input devices 4072. The touch panel 4071, also known as a touch screen, can collect the user's touch operation on or near it (such as the user's operation on the touch panel 4071 or near the touch panel 4071 using any suitable object or accessory such as a finger, stylus, etc.). The touch panel 4071 may include two parts: a touch detection device and a touch controller. Among them, the touch detection device detects the user's touch orientation, detects the signal brought by the touch operation, and transmits the signal to the touch controller; the touch controller receives the touch information from the touch detection device, converts it into the contact point coordinates, and then sends it to the processor 410, receives the command sent by the processor 410 and executes it. In addition, the touch panel 4071 can be implemented using various types such as resistive, capacitive, infrared and surface acoustic waves. In addition to the touch panel 4071, the user input unit 407 may also include other input devices 4072. Specifically, other input devices 4072 may include but are not limited to a physical keyboard, function keys (such as volume control keys, switch keys, etc.), a trackball, a mouse, and a joystick, which are not described in detail here.

Further, the touch panel 4071 may be covered on the display panel 4061. When the touch panel 4071 detects a touch operation on or near it, it is transmitted to the processor 410 to determine the type of the touch event, and then the processor 410 provides a corresponding visual output on the display panel 4061 according to the type of the touch event. It can be understood that in one embodiment, the touch panel 4071 and the display panel 4061 are used as two independent components to implement the input and output functions of the electronic device, but in some embodiments, the touch panel 4071 and the display panel 4061 can be integrated to implement the input and output functions of the electronic device, which is not limited here.

The interface unit 408 is an interface for connecting an external device to the electronic device 400. For example, the external device may include a wired or wireless headset port, an external power supply (or battery charger) port, a wired or wireless data port, a memory card port, a port for connecting a device with an identification module, an audio input/output (I/O) port, a video I/O port, a headphone port, etc. The interface unit 408 may be used to receive input (e.g., data information, power, etc.) from an external device and transmit the received input to one or more elements within the electronic device 400 or may be used to transmit data between the electronic device 400 and an external device.

The memory 409 can be used to store software programs and various data. The memory 409 can mainly include a program storage area and a data storage area, wherein the program storage area can store an operating system, at least one application required for a function (such as a sound playback function, an image playback function, etc.), etc.; the data storage area can store data created according to the use of the mobile phone (such as audio data, a phone book, etc.), etc. In addition, the memory 409 can include a high-speed random access memory, and can also include a non-volatile memory, such as at least one disk storage device, a flash memory device, or other volatile solid-state storage devices.

The processor 410 is the control center of the electronic device. It uses various interfaces and lines to connect various parts of the entire electronic device. It executes various functions of the electronic device and processes data by running or executing software programs and/or modules stored in the memory 409, and calling data stored in the memory 409, so as to monitor the electronic device as a whole. The processor 410 may include one or more processing units; preferably, the processor 410 may integrate an application processor and a modem processor, wherein the application processor mainly processes the operating system, user interface, and application programs, etc., and the modem processor mainly processes wireless communications. It is understandable that the above-mentioned modem processor may not be integrated into the processor 410.

The electronic device 400 may also include a power supply 411 (such as a battery) for supplying power to each component. Preferably, the power supply 411 may be logically connected to the processor 410 through a power management system, thereby implementing functions such as charging, discharging, and power consumption management through the power management system.

In addition, the electronic device 400 includes some functional modules not shown, which will not be described in detail here.

It should be noted that, in this article, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprises a ..." does not exclude the existence of other identical elements in the process, method, article or device including the element.

Through the description of the above implementation methods, those skilled in the art can clearly understand that the above-mentioned embodiment methods can be implemented by means of software plus a necessary general hardware platform, and of course by hardware, but in many cases the former is a better implementation method. Based on such an understanding, the technical solution of the present invention, or the part that contributes to the prior art, can be embodied in the form of a software product, which is stored in a storage medium (such as ROM/RAM, a magnetic disk, or an optical disk), and includes a number of instructions for enabling a terminal (which can be a mobile phone, a computer, a server, an air conditioner, or a network device, etc.) to execute the methods described in each embodiment of the present invention.

The embodiments of the present invention are described above in conjunction with the accompanying drawings, but the present invention is not limited to the above-mentioned specific implementation modes, which are merely illustrative rather than restrictive. Under the guidance of the present invention, ordinary technicians in this field can also make many forms without departing from the scope of protection of the present invention and the claims, all of which are within the protection of the present invention.

Those of ordinary skill in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed in the embodiments of the present invention can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of the present invention.

Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

In the embodiments provided in the present application, it should be understood that the disclosed devices and methods can be implemented in other ways. For example, the device embodiments described above are only schematic. For example, the division of the units is only a logical function division. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

If the functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, or the part that contributes to the prior art, or the part of the technical solution, can be embodied in the form of a software product. The computer software product is stored in a storage medium, including several instructions for a computer device (which can be a personal computer, server, or network device, etc.) to perform all or part of the steps of the method described in each embodiment of the present invention. The aforementioned storage medium includes: various media that can store program codes, such as USB flash drives, mobile hard disks, ROM, RAM, magnetic disks, or optical disks.

The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims (10)

1. A method for controlling a device, comprising: Step 1: In response to a target device in a working scenario triggering cancellation of a subscription to a topic, obtaining a target topic that the target device cancels its subscription; Step 2: Execute a subscription control operation for the target device according to the current topic type corresponding to the target topic, and generate a control message for the target device; Step 3: Send a control message to the target device, where the control message is used to indicate whether the target device is allowed or not to cancel the subscription to the target topic; Step 4: Receive the execution log for the management and control message sent by the target device, adjust the type of the target topic according to the execution log, obtain the target topic type corresponding to the target topic, and return to step 1. 2. The method according to claim 1, characterized in that the step of performing a subscription control operation for the target device according to the current topic type corresponding to the target topic and generating a control message for the target device comprises: If the target topic is currently a non-critical topic, a subscription cancellation confirmation message for the target topic is generated, and the subscription cancellation confirmation message is sent to the target device, wherein the subscription cancellation confirmation message is used to instruct the target device to confirm the cancellation of the subscription to the target topic, and the non-critical topic is a topic whose usage frequency is less than or equal to a preset threshold; A confirmation message for the subscription cancellation confirmation message sent by the target device is received, the subscription of the target device to the target topic is canceled, and a subscription cancellation message for the confirmation message is generated, wherein the subscription cancellation message is used to indicate that the target device is allowed to cancel the subscription to the target topic. 3. The method according to claim 1 or 2, characterized in that the step of performing a subscription control operation for the target device according to the current topic type corresponding to the target topic and generating a control message for the target device further comprises: If the target topic is currently a critical topic, obtaining a correlation degree between the target topic and the work scenario, the correlation degree being used to characterize the impact of prohibiting cancellation of subscription to the target topic on the execution of the target device; If the association degree is less than or equal to a preset condition threshold, a prohibition cancellation message for the target topic is generated and sent to the target device, where the prohibition cancellation message is used to not allow the target device to cancel its subscription to the target topic. 4. The method according to claim 3, characterized in that the step of performing a subscription control operation for the target device according to the current topic type corresponding to the target topic and generating a control message for the target device further comprises: If the association degree is greater than a preset condition threshold, canceling the subscription of the target device to the target topic, and generating a subscription cancellation message for the confirmation message; The target device is enabled to communicate with other devices in the working scenario, and the subscription cancellation message is sent to the target device. 5. The method according to claim 3, wherein obtaining the degree of association between the target subject and the work scenario comprises: Obtaining device operation logs, subject data flow, and fault reports corresponding to the target device; The device operation log, the subject data flow and the fault report are used to analyze the correlation between the target subject and the work scenario to obtain the correlation degree between the target subject and the work scenario. 6. The method according to claim 1, characterized in that the execution log includes at least a first execution log and a second execution log, the first execution log is a log generated by the target device performing a device operation within a preset time period after the target device cancels the subscription to the target topic, and the second execution log is a log generated by the target device performing a device operation within a preset time period before the target device cancels the subscription to the target topic, and the type of the target topic is adjusted according to the execution log to obtain the target topic type corresponding to the target topic, comprising: Acquire, from the first execution log, a first device operation executed by the target device and a first success rate corresponding to executing the first device operation; Acquire, from the second execution log, a second device operation executed by the target device and a second success rate corresponding to executing the second device operation; Matching the first device operation with the second device operation and matching the first success rate with the second success rate to obtain a similarity between the first execution log and the second execution log; If the similarity is less than or equal to a preset similarity threshold, the target topic is adjusted from a non-critical topic to a critical topic. 7. The method according to claim 1, characterized in that in response to the target device in the working scenario triggering the cancellation of the subscription of the topic, obtaining the target topic that the target device cancels the subscription comprises: A subscription cancellation request sent by a target device in a working scenario is received, or, in response to not receiving a report message from the target device within a preset time period, a target topic for the target device to cancel its subscription is obtained. 8. A control device for an equipment, characterized by comprising: A topic acquisition module, configured to, in response to a target device in a working scenario triggering cancellation of a topic subscription, acquire a target topic that the target device has unsubscribed from; A message generation module, used to perform a subscription control operation for the target device according to the current topic type corresponding to the target topic, and generate a control message for the target device; A message sending module, used for sending a control message to the target device, wherein the control message is used for indicating whether the target device is allowed or not to cancel the subscription to the target topic; A topic adjustment module is used to receive the execution log for the management and control message sent by the target device, adjust the type of the target topic according to the execution log, obtain the target topic type corresponding to the target topic, return the subscription cancellation triggered by the target device in the working scenario, and obtain the target topic that the target device cancels its subscription. 9. An electronic device, comprising a processor, a communication interface, a memory and a communication bus, wherein the processor, the communication interface and the memory communicate with each other through the communication bus; The memory is used to store computer programs; The processor is used to implement the method according to any one of claims 1 to 7 when executing the program stored in the memory. 10. A computer-readable storage medium having instructions stored thereon, which, when executed by one or more processors, cause the processors to perform the method according to any one of claims 1 to 7.