CN106850784A - Communication method between smart host and cloud service - Google Patents

Abstract

The invention relates to a communication method between a smart host and a cloud service, which is applied to a smart home system. The smart home system includes bottom equipment, smart host, cloud service and control terminal. The control terminal is used to communicate with the cloud service and control the work of the bottom equipment through the cloud service and smart host. The communication method between the smart host and the cloud service includes the steps: the smart host sends a connection request message to the cloud service to request connection; the cloud service receives and reads the connection request message, and replies to the smart host with a request confirmation message; and The host receives the request confirmation message and maintains a persistent connection with the cloud service. During the process of maintaining connection with the cloud service, the smart host sends a heartbeat message to the cloud service at predetermined intervals to confirm whether the connection between the smart host and the cloud service is maintained; wherein, the message is a binary byte stream message. The above-mentioned communication method between the smart host and the cloud service has good real-time performance and is relatively safe.

Description

Communication method between smart host and cloud service

technical field

The invention relates to the field of smart home, in particular to a communication method between a smart host and a cloud service of a smart home system.

Background technique

With the rapid development of information technology, smart home systems are becoming more and more popular due to their convenience. Since the control center of the traditional smart home system uses home personal computer (PC) and coordinator and other equipment as the control center, the smart home system based on the traditional client/server (C/S) architecture needs to maintain a personal computer (PC) Machine) run as middleware to achieve the purpose of control at any time, through the personal computer (PC) to maintain the connection with the server, so that the user's control terminal (such as mobile phone, wearable device remote control, etc.) can obtain the current smart home system The underlying device state.

As shown in Figure 4, the device control steps of the traditional smart home system of the client/server architecture of the above application include:

Step 1: Turn on a personal computer (PC) to ensure that it can always connect to the Internet, start the local server in the personal computer (PC) to access cloud services at regular intervals of 3 seconds, and maintain a long-term connection with the gateway based on the LAN Socket.

Step 2: Start a gateway to maintain a long connection with a personal computer (PC) through a LAN Socket, start a thread and receive/send control data to the underlying device.

Step 3: The cloud service receives a device control instruction with the unique number of the underlying device sent by the user, and stores it.

Step 4: The personal computer (PC) sends a command to request the latest data with the unique number of the underlying device to the cloud service at regular intervals of 3 seconds.

Step 5: After the cloud service receives a connection request from an external personal computer (PC). First obtain the unique identifier of the underlying device that the personal computer (PC) requests to connect to, and if it is determined that it is a registered personal computer (PC) connection request, then obtain the unique number of the current underlying device, and store the unique number of the current underlying device stored in the cloud service The numbered device control command is fed back to the personal computer (PC); if it is incorrect, it is discarded without processing, and the connection request of the personal computer (PC) is continued to be monitored.

Step 6: The personal computer (PC) requests the cloud service to obtain the latest data instruction, and after the cloud service authentication is confirmed, the personal computer (PC) receives the latest data instruction fed back by the cloud service. Analyze it and send it to the gateway through LAN Socket communication. The gateway receives the device control command and sends the control command to control the device (for example: turn on the light).

The above-mentioned smart home system adopting the client/server (C/S) architecture of the smart home needs to use a separate personal computer (PC) to communicate with the cloud service, and the system implementation cost is relatively high. Simultaneously, because personal computer (PC) visits server regularly, the real-time performance that the user controls bottom equipment to bottom equipment response and changes state is relatively poor. A separate personal computer (PC) is used in the whole smart home system, which increases the degree of coupling, and makes the control of the smart home system more affected by the stability of the network.

Contents of the invention

The purpose of the embodiments of the present invention is to provide a communication method between a smart host and a cloud service in a smart home system with good real-time performance and relatively safe, so as to solve the above-mentioned technical problems.

A communication method between a smart host and a cloud service, which is applied to a smart home system, the smart home system includes underlying equipment, a smart host, a cloud service, and a control terminal, the control terminal is used to communicate with the cloud service, And control the work of the underlying device through the cloud service and the smart host. The communication method between the smart host and the cloud service includes the steps: the smart host sends a connection request message to the cloud service to request connection; the cloud service receives and reads the connection request message, and sends the message to the smart host replying to the request confirmation message; and the smart host receives the request confirmation message and maintains a persistent connection with the cloud service. During the process of maintaining the connection with the cloud service, the smart host sends a heartbeat message to the cloud service at predetermined intervals to confirm whether the connection between the smart host and the cloud service is maintained; wherein, the The message is a binary byte stream message.

In one of the implementation manners, when the cloud service receives the heartbeat message sent by the smart host, the cloud service judges the time difference between the heartbeat message and the previous heartbeat message of the same smart host, if If the time difference is within the preset time range, the cloud service directly replies with a heartbeat confirmation message, so that the cloud service continues to maintain a long connection with the smart host.

In one of the implementation manners, if the cloud service judges that the time difference between the heartbeat message and the last heartbeat message of the same smart host exceeds the preset time range, the cloud service actively disconnects from the smart host long connection.

In one of the implementation manners, after the cloud service actively disconnects the long connection with the smart host, the smart host sends a connection request message again to request a connection.

In one of the implementation manners, after the smart host is successfully connected to the cloud service, the smart host sends device states of all underlying devices currently connected to the smart host to the cloud service.

In one of the implementation manners, whenever there is a change in the state of the underlying device, the smart host sends the device state of the underlying device to the cloud service in the form of a message.

In one of the implementation manners, during the process of requesting a connection, the smart host continuously monitors whether it can be connected to the cloud service, and continues to request a connection from the cloud service until a long-term connection is maintained with the cloud service.

In one of the implementation manners, when the cloud service is deployed on the cloud server, it continuously monitors and waits for the connection request of the smart host and receives the message sent by the smart host.

In one of the implementation manners, after receiving the message sent by the smart host, the cloud service first obtains the message type information in the message, and replies a corresponding message to the smart host according to the message type .

In one implementation manner, the message includes a header used to distinguish other messages and a data body used to carry control information.

Compared with the prior art, in the communication method between the smart host and the cloud service provided by the embodiment of the present invention, the smart host maintains a persistent connection with the cloud service, and the cloud service receives a device control instruction sent by the user, The smart host can receive it immediately, and the response from the user control to the underlying equipment is almost instantaneous, and the real-time performance is strong. At the same time, the smart host interacts with the cloud service through messages of binary byte streams, which ensures high security and confidentiality.

Description of drawings

In order to illustrate the technical solution of the present invention more clearly, the accompanying drawings used in the implementation will be briefly introduced below. Obviously, the accompanying drawings in the following description are only some implementations of the present invention. As far as the skilled person is concerned, other drawings can also be obtained based on these drawings on the premise of not paying creative work.

Fig. 1 is a schematic framework diagram of a smart home system provided by an embodiment of the present invention;

FIG. 2 is a schematic structural diagram of a communication message between a smart host and a cloud service provided by an embodiment of the present invention;

FIG. 3 is a schematic diagram of an interaction flow between a smart host and a cloud service provided by an embodiment of the present invention;

Fig. 4 is a schematic diagram of the background technology of the present invention.

detailed description

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

Please refer to FIG. 1 to FIG. 3 at the same time. The embodiment of the present invention provides a communication method between a smart host and a cloud service as shown in FIG. 3 , which is applied to the smart home system as shown in FIG. 1 . The smart home system includes a control terminal, a remote server, a home control center and bottom equipment, the control terminal is used to receive user operation instructions, and is used to send the control instructions to the remote server; the remote server uses for interacting with the home control center, and for sending the control instruction to the home control center; the home control center is for interacting with the bottom device, and controlling the bottom device to work according to the control instruction . Wherein, the underlying device is a smart home device, including but not limited to lights, sockets, door contacts, infrared, and the like.

In the embodiment of the present invention, the home control center is a smart host, and the smart host communicates with the bottom device and the remote server. The smart host includes hardware with a gateway function, and the hardware is used for sending and receiving signals of the underlying device, and can maintain a long-term connection with the remote server. The communication between the smart host and the bottom device is based on the ZigBee protocol. It should be understood that ZigBee is a wireless network protocol for low-speed short-distance transmission. The ZigBee protocol is divided into physical layer (PHY), media access control layer (MAC), transport layer (TL), network layer (NWK), application layer (APL) and so on from bottom to top. Among them, the physical layer and the media access control layer follow the regulations of the IEEE 802.15.4 standard. The long connection should be understood as a long-term connection with the remote server to send and receive data. The connection between the bottom device control center and the bottom device is based on a sensor network connection, wherein the sensor network can be established through wireless communication technologies such as ZigBee and Wi-Fi.

In the embodiment of the present invention, the remote server is a cloud service, which should be understood as a master-slave server deployed on the cloud server.

In the embodiment of the present invention, the control terminal may be, but not limited to, a smart portable terminal such as a mobile phone, a tablet computer, a wearable device, a remote control, etc., and the control terminal also has a network communication function. The user can control the underlying device through the control terminal, and the user's control mode includes a local mode and a remote mode.

The local mode should be understood as a LAN-based control mode: the control terminal is connected to the same local area network as the smart host, and interacts with the smart host and sends control instructions to the smart host, so that the control The terminal can control the underlying device through the smart host. The remote mode should be understood as an Internet-based mode: the control terminal is connected to the communication network and interacts with the cloud service, and after the control terminal sends the control command to the cloud service, the cloud service will control An instruction is sent to the smart host, so that the control terminal can control the underlying device through the cloud service and the smart host. Wherein, the communication protocols between the control terminal and the cloud service, and between the cloud service and the smart host are TCP/IP protocols.

In the embodiment of the present invention, the smart host is used as the middleware for the underlying device to control and connect to the cloud service, which ensures the real-time response of the underlying device and the cloud service device information and control device response. In addition, since a separate personal computer (PC) is not needed as the middleware, the degree of coupling is reduced, thereby reducing the adverse effect of network instability on the control of the underlying devices.

In the embodiment of the present invention, the communication between the bottom device of the smart home system, the smart host, the cloud service and the control terminal is implemented by sending and receiving messages.

Please refer to FIG. 2 . FIG. 2 schematically shows a structure of a message communicated between the smart host and the cloud service. The message protocol for communication between the smart host and the cloud service is as follows: the entire message is composed of a binary byte stream, and the message includes a header for distinguishing other messages and a header for carrying control information. data body. The header includes header, time stamp, device number, message type and data length. The header is used to distinguish other messages, the timestamp is used to mark the sending time of the message, the device number is used to mark the device number of the underlying device corresponding to the message, and the message length It is used to indicate the length of the data body. Wherein, the length of the data body is included in the data length of the header, which can prevent the packet from being maliciously captured to obtain data information.

Please refer to FIG. 3 , which schematically shows an interaction process between the cloud service and the smart host. When the smart host receives the device status and other messages reported by the bottom device, it needs to send the latest status of the bottom device to the cloud service through a persistent connection, so as to allow the cloud service to send the bottom device The status information is kept in the database. The communication method between the smart host and the cloud service includes the following steps:

Step 1: Every time the smart host is powered on, it starts a thread for communicating with the cloud service and sends a connection request message to the cloud service. Wherein, during the process of requesting a connection, the smart host continuously monitors whether it can be connected to the cloud service, and continues to request a connection from the cloud service until it maintains a permanent connection with the cloud service.

Step 2: When receiving the connection request message from the smart host, the cloud service first obtains the message type information in the message, and if it is judged to be a connection request message, the cloud service replies with a request confirmation message text to the smart host. If it is judged to be other messages, the cloud service replies a corresponding message to the smart host. Wherein, when the cloud service is deployed on the cloud server, it starts monitoring and waits for the connection request sent by the smart host and receives the message sent by the smart host, and the cloud server may be an Alibaba Cloud server.

Step 3: When the smart host receives the request confirmation message replied by the cloud service, it means that the smart host is successfully connected to the cloud service. At the same time, the smart host sends the device statuses of all underlying devices (such as sockets, switches, etc.) currently connected to the smart host to the cloud service. During the process of maintaining the connection between the smart host and the cloud service, the smart host sends a heartbeat message to the cloud service at predetermined intervals to confirm whether the connection between the two is maintained. The predetermined time may be 0.1 second, 0.5 second, 1 second, 1.5 second, 2 seconds and so on. Whenever there is a change in the state of the underlying device, the smart host sends the device state of the underlying device to the cloud service in the form of a message.

Step 4: After the cloud service replies the request confirmation message to the smart host, it continues to monitor and receive messages from the smart receiving host. When the cloud service receives the underlying device status message, it stores the underlying device status information. When the cloud service receives the heartbeat confirmation message from the smart host, the cloud service judges the time difference between the heartbeat message and the previous heartbeat message of the same smart host, and if the time difference is within the preset time range, then The cloud service directly replies a heartbeat confirmation message, so that the cloud service continues to maintain a long connection with the smart host; if the cloud service judges that the heartbeat message is different from the previous heartbeat message of the same smart host If the time difference exceeds the preset time range, the cloud service actively disconnects the long connection with the smart host.

Step 5: After the cloud service actively disconnects the persistent connection with the smart host, the smart host sends a connection request message again to request a connection, and repeats steps 1 to 4.

In the communication method between the smart host and the cloud service of the smart home system provided by the embodiment of the present invention, the smart host is used to replace the personal computer as the home control center, which reduces the implementation cost of the smart home system. At the same time, the smart host maintains a long-term connection with the cloud service, and the cloud service receives the device control command sent by the user, and the smart host can receive it immediately. Strong. In addition, the smart host interacts with the cloud service through messages of binary byte streams, which has strong security and confidentiality.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: it can still be Modifications are made to the technical solutions described in the foregoing embodiments, or equivalent replacements are made to some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims (10)

1. the communication means between a kind of smart host and cloud service, is applied to intelligent domestic system, the intelligent domestic system Including underlying device, smart host, cloud service and control terminal, the control terminal be used for the cloud service communication, and The underlying device is controlled to work by the cloud service and the smart host；It is logical between the smart host and cloud service Letter method includes step：

The smart host sends connection request message request and connects to the cloud service；

The cloud service is received and reads connection request message, and request confirmation message is replied to the smart host；And

The smart host receives request confirmation message, and keeps length to be connected with the cloud service；Wherein, the smart host exists During keeping being connected with the cloud service, jump message of uniting as one is sent to cloud service at interval of the scheduled time, to confirm State and whether kept between smart host and the cloud service connection；Wherein, the message is binary system byte stream packet.

2. the method for claim 1, it is characterised in that when the cloud service receives the heartbeat that the smart host sends During message, the cloud service judges to be united as one on this heartbeat message and same smart host and jumps the time difference of message, if when Between differ from preset time range, then the cloud service is directly replied and united as one jump confirmation message so that the cloud service with The smart host continues to keep connection long.

3. method as claimed in claim 2, it is characterised in that if the cloud service judges this heartbeat message with same intelligence The time difference for jumping message is united as one on main frame beyond preset time range, then the cloud service actively disconnects main with the intelligence The connection long of machine.

4. method as claimed in claim 3, it is characterised in that when the cloud service actively disconnect and the smart host length After connection, the smart host sends the connection of connection request message request again.

5. the method for claim 1, it is characterised in that after the smart host and the cloud service successful connection, institute State the equipment state that smart host sends all underlying devices under being currently connected with the smart host to the cloud service.

6. method as claimed in claim 5, it is characterised in that whenever having underlying device state change, the smart host The equipment state of the underlying device is sent to the cloud service by the form of message.

7. the method for claim 1, it is characterised in that the smart host during connection is asked, lasting prison Can listen be connected with the cloud service, and continue to ask to connect to the cloud service, until keeping length to be connected with the cloud service.

8. method as claimed in claim 7, it is characterised in that the cloud service is when being deployed on Cloud Server, i.e., lasting Keep monitoring the connection request for waiting the smart host and receive the message that the smart host sends.

9. method as claimed in claim 8, it is characterised in that the cloud service receives the message that the smart host sends Afterwards, the type of message information in message is obtained first, and it is main to the intelligence to reply a corresponding message according to type of message Machine.

10. the method for claim 1, it is characterised in that the message include for distinguish the header of other messages with And for carrying the data volume of control information.