CN114237111B - Equipment stability control method and system based on Bluetooth MESH protocol - Google Patents
Equipment stability control method and system based on Bluetooth MESH protocol Download PDFInfo
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- CN114237111B CN114237111B CN202111525013.7A CN202111525013A CN114237111B CN 114237111 B CN114237111 B CN 114237111B CN 202111525013 A CN202111525013 A CN 202111525013A CN 114237111 B CN114237111 B CN 114237111B
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Classifications
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/042—Programme control other than numerical control, i.e. in sequence controllers or logic controllers using digital processors
- G05B19/0423—Input/output
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/20—Pc systems
- G05B2219/23—Pc programming
- G05B2219/23051—Remote control, enter program remote, detachable programmer
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Abstract
The invention discloses a device stability control method and a system based on a Bluetooth MESH protocol, wherein the method comprises the following steps: networking equipment; the gateway is utilized to carry out network distribution operation on the node equipment and the switch equipment so as to form an MESH network, and the network distribution process is carried out by using a standard Bluetooth MESH protocol network distribution flow; the equipment forms a communication network with a subscription-release mode; the gateway, the switch equipment and the node equipment form a subscription-release mode by using subscription-release instructions in a Bluetooth MESH protocol; and after the switch equipment controls the node equipment, the gateway judges whether to retransmit the message, and if the gateway judges that the switch equipment does not successfully control the node equipment, the gateway sends a control instruction to the node equipment. The invention uses the distribution network terminal with stronger calculation capability to retransmit the message, can know the control intention and ensures the control accuracy. The control of the lighting switch to the lamp is guaranteed, the reliability and stability of communication are improved, and the user experience is also improved.
Description
Technical Field
The invention relates to the technical field of Bluetooth MESH, in particular to a device stability control method and system based on Bluetooth MESH protocol.
Background
With the rise of smart home, how to ensure the reliability control of smart home devices becomes an important point of people. At present, when the lighting switch equipment based on the Bluetooth MESH protocol is produced and manufactured, the situation that the lighting switch equipment is easy to cause packet loss due to environmental interference and further fails to control the lamp is found when the lighting switch equipment sends a lamp control instruction through the Bluetooth MESH protocol. Especially when it is required to control a group of lamp devices, it is more likely that the lamp devices in the group will fail to be controlled due to over-the-air packet loss.
In order to improve the reliability of communication, it is considered to introduce a retransmission mechanism to retransmit the control message after packet loss is found. The patent CN111247817a, "method of message release and BLE device", proposes a retransmission mechanism for message release, which proposes: firstly, a publishing terminal acquires subscription information of a first publishing address from a distribution network terminal, then publishes the message, and finally judges whether the number of response messages of the subscribing terminal is retransmitted or not. The method provides a message retransmission mechanism, but does not consider the correctness of the retransmitted message. For example, if a switching command is retransmitted according to the message proposed in CN111247817a, a state in which a part of the lamps are turned on and a part of the lamps are turned off is still present, and a group of lamps cannot be turned on. In addition, the method proposes to retransmit the message at the issuing end, and does not consider the situation that the issuing end cannot complete the retransmission of the message if the issuing end is a low-power consumption node or a node with limited computing resource capacity.
Disclosure of Invention
The invention provides a device stability control method and system based on a Bluetooth MESH protocol, which are used for solving the problems in the prior art.
The technical scheme adopted by the invention is as follows: the device stability control method based on the Bluetooth MESH protocol comprises the following steps:
networking equipment; the gateway is utilized to carry out network distribution operation on the node equipment and the switch equipment so as to form an MESH network, and the network distribution process is carried out by using a standard Bluetooth MESH protocol network distribution flow;
the equipment forms a communication network with a subscription-release mode; the gateway, the switch equipment and the node equipment form a subscription-release mode by using subscription-release instructions in a Bluetooth MESH protocol; the node equipment subscribes to a certain group address by using a subscription instruction in the Bluetooth MESH protocol, and the switch equipment configures a target address of the switch equipment to be a group address consistent with the node equipment by using an issuing instruction; the gateway subscribes to the same group address as the node equipment by using a subscription instruction, and the gateway records the node equipment information, including which node equipment exists under a certain group address and the state information of the current node equipment;
and after the switch equipment controls the node equipment, the gateway judges whether to retransmit the message, and if the gateway judges that the switch equipment does not successfully control the node equipment, the gateway sends a control instruction to the node equipment.
Preferably, after the switch device performs the operation of controlling the node device, the gateway determines whether to retransmit the message, and if the gateway determines that the switch device does not successfully control the node device, the gateway sends a control instruction to the node device, including:
the gateway obtains node equipment information;
when the switch equipment sends a control instruction to the node equipment, the switch equipment also sends the control instruction to the gateway, and the gateway then makes clear the control intention;
after receiving the control instruction to perform corresponding operation, the node equipment reports an execution result to the gateway;
the gateway judges whether all the node devices receive the execution report results in sequence according to the node device information, and if the gateway receives the execution report results of all the node devices, the number of the node devices is consistent with the number of the reported execution results, the gateway indicates that the switch device is successfully controlled; if the node equipment report is not received or part of the node equipment report is received, the failure of the control of the switch equipment is indicated;
after the gateway judges that the control of the switch equipment fails, the gateway simulates the switch to resend the control instruction to the node equipment according to the control intention reported by the switch equipment.
Preferably, the node device is a light group, and the switch device is a lighting switch device.
Preferably, the status information of the node device includes a light group brightness and a switch status.
The invention also discloses a device stability control system based on the Bluetooth MESH protocol, which comprises a gateway, node devices and switch devices, wherein the system realizes message retransmission by the device stability control method based on the Bluetooth MESH protocol.
The beneficial effects of the invention are as follows: the invention provides a device stability control method based on a Bluetooth MESH protocol, which uses a distribution network terminal with stronger computing capability to retransmit messages, can know control intention and ensures control accuracy. The control of the lighting switch to the lamp is guaranteed, the reliability and stability of communication are improved, and the user experience is also improved.
Drawings
Fig. 1 is a schematic flow chart of a device stability control method based on bluetooth MESH protocol.
FIG. 2 is a flow chart of a communication network in which devices of the Bluetooth MESH protocol-based device stability control method form a subscription-release mode;
fig. 3 is a flow chart of judging whether to retransmit a message by a gateway of the device stability control method based on the bluetooth MESH protocol.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings, but embodiments of the present invention are not limited thereto.
In order to more clearly illustrate the technical problem solved by the invention, the present embodiment introduces some basic concepts of bluetooth mesh. First, the bluetooth MESH node needs a network allocation node (provider) to complete the networking, and this network allocation node is called a gateway. After the nodes are networked, the nodes communicate with each other by adopting a subscription-release model. For example, node a subscribes to topic a and when node B has new content published about topic a, node a will receive the content published by node B. The bluetooth MESH protocol uses subscription and issue instructions to complete the establishment of the model, the subscription instructions allow the node to subscribe to a certain topic, the issue instructions allow the node to configure its target address, the target address refers to the address of the node to send the instruction, for example, after the lighting switch device uses the issue instructions to configure its target address as address a, the lighting switch device will send a control instruction to address a subsequently.
When the lighting switch device needs to control the lamp group, all lamps in the lamp group are subscribed to a unified group address (subject), namely all the lamp devices are common and then the lighting switch device can complete the control of the lamps only by issuing a control instruction (new content) to the group address. Meanwhile, bluetooth communication is carried out through aerial packet sending, so that when the lighting switch equipment controls the lamp group, once signal interference occurs to cause aerial packet loss, the lamp group fails to be controlled.
The method aims at the situation that packet loss occurs after a switch panel is used for sending a switch switching instruction at present, and the state that part of lamps are turned on and part of lamps are turned off occurs. The embodiment discloses a device stability control method based on bluetooth MESH protocol, as shown in fig. 1, a gateway G, a lighting switch device S, and a set of lamp devices L (i.e., node devices) are selected as devices in an implementation manner.
In step S1, the gateway G performs a network configuration operation on the lighting switch device S and the lamp group device L as a network configuration node (provider), so that the lighting switch device S and the lamp group device L form a MESH network, and the whole network configuration process is performed using a standard bluetooth MESH protocol network configuration flow. After networking, the gateway G, the lighting switch device S and the lamp group device L may communicate with each other.
In the step S2, the device forms a communication network in a subscription-release mode, and the gateway G, the lighting switch device S, and the lamp group device L use subscription-release instructions in the bluetooth MESH protocol to form a communication network in a subscription-release mode.
Further, as shown in fig. 2, the implementation S2 of the communication network in which the device forms a subscription-publish mode starts from step S2.1. In step 2.1, the gateway G sends a subscription instruction in the bluetooth MESH protocol to the lamp group device L, so that the lamp group device L subscribes to the group address a, and the gateway records information of the lamp group L, including how many devices are under the group lamp and the current state of the lamp group. In step S2.2, gateway G subscribes to the same group address a as the lamp group using a subscription instruction. In step S2.3, the lighting switching device S configures its target address to the group address a using the issued instruction. To this end, a subscription-publish mode communication network is formed between the gateway G, the light bank L and the lighting switch device S.
In the step S3, after the lighting switch device performs the lamp control operation and the gateway judges whether to perform message retransmission, the lighting switch device S sends a control instruction to the lamp group device L, and the lamp group device L feeds back the execution result to the gateway G after executing the control instruction. Meanwhile, since the gateway G and the lamp group device L subscribe to the same group address a in step S2, when the lighting switch device S sends a control instruction to the lamp group device L, the gateway G can also receive the control instruction sent by the lighting switch S, so that the gateway G knows the control intention of the lighting switch S. According to the feedback result of the lamp group device L, in combination with the control intention of the lighting switch device S, the gateway G may determine whether the lighting switch device S successfully controls the lamp. If not, the gateway G simulates the intention instruction of the lighting switch and retransmits the control instruction to the lamp group device L.
Further, as shown in fig. 3, after the lighting switch device performs the lamp control operation in step S3, the gateway determines whether to perform the message retransmission, which starts from step S3.1.
In step S3.1, the gateway G obtains the light group device L information.
In step S3.2, the lighting switch device S, when sending control instructions to the light group device L, will also send control instructions to the gateway G, which in turn makes clear its control intent.
In step S3.3, after receiving the control instruction to perform corresponding operation, the lamp group device L reports the execution result to the gateway G.
In step S3.4, the gateway G sequentially determines, according to the lamp group information, whether all the lamp devices in the group lamp L have received the reporting result. If the gateway receives the report of the execution results of all the lamp devices in the group lamp L, namely the number of the lamp devices in the group lamp L is consistent with the number of the reported execution results, the gateway indicates that the lighting switch device S is successfully controlled; and if the lamp report is not received or part of the lamp report is received, indicating that the lighting switch S fails to control the lamp. After the gateway G determines that the lighting switch device S fails to control the lamp, the analog lighting switch S retransmits the control command to the lamp group L according to the control intention reported by the lighting switch device S.
Specifically, in step S3.4, how the gateway determines the intention command of the analog lighting switch after the failure of the control and retransmits the command, taking one lighting switch S1 as an example, the lighting control needs to be performed on the light group L1. For example, when all lamps in the current lamp group L1 are in an initial state of being turned off, the lighting switch S1 performs on control, the lighting switch S1 sends a switch switching instruction to the group address A1, and since all lamps in the lamp group L1 subscribe to the group address A1, the switch switching instruction from the lighting switch S1 will be received, the lamps execute switch state switching after receiving the instruction, and the execution result information will be reported to the gateway G1 after completing execution. The gateway G1 judges whether the lamp on control is successful or not according to whether the number of lamps in the lamp group L1 information is consistent with the number of the execution results. If the numbers are consistent, the gateway changes the current state of the current lamp group L1, namely, changes the state of the group lamp L1 into the lamp on state. If the numbers are inconsistent, the gateway G1 considers that the turn-on control fails, and the gateway G1 simulates an intention instruction. First, since the gateway G1 also subscribes to the group address A1, when the lighting switch S1 sends a switch switching instruction to the group address A1, the gateway will also have the instruction. Therefore, the gateway will know that the lighting switch S1 is the control to switch the lamp group L1, and combine the current state information of the lamp group L1, that is, the lamp group L1 is in the state of being turned off, calculate that the retransmitted instruction is the control intention of turning on the lamp group, and the gateway G1 sends the lamp-on instruction to the lamp group L1. To this end, a step of retransmitting the instruction is reached.
Specifically, how the gateway simulates the lighting switch intention instruction in step S3 is exemplified by another operation example. If one lighting switch S2 needs to control the brightness of the lamp group L2 to be turned on by 10%, the brightness of all lamps in the current lamp group L2 is an initial value of 100 lux. The lighting switch S2 sends a control instruction for turning on 10%, if the lamp receives the instruction, the operation of turning on 10% of brightness is executed, the brightness is adjusted to 110lux, and execution result information is reported to the gateway G2; if the instruction is not received, the action is not executed, and meanwhile, the execution result information is not reported to the gateway G2. The gateway G2 judges whether the lamp on control is successful or not according to whether the number of lamps in the lamp group L2 information is consistent with the number of the execution results. When the numbers are consistent, the gateway considers that the control is successful, and modifies the brightness state of the lamp group L2 to be 110lux. When the numbers are inconsistent, the gateway G2 considers the control to be failed, and the gateway G2 simulates the intention instruction. Similarly, since gateway G2 also subscribes to group address A2, when lighting switch S2 sends a 10% turn on command to group address A2, the gateway will also have the command. The gateway G2 knows that the lighting switch S2 wants to control the brightness of the lamp group L2 by 10%, and combines the current state information of the lamp group L2, that is, the current brightness value of the lamp group L2 is 100lux, calculates that the instruction for resending is the instruction for adjusting the brightness of the lamp group to 110lux, and the gateway G1 sends the instruction for adjusting the brightness to 110lux to the lamp group L1, so as to achieve a step of resending the instruction.
Example 2
The embodiment discloses a device stability control system based on a Bluetooth MESH protocol, which comprises a gateway, node devices and switch devices, wherein the system realizes message retransmission by the device stability control method based on the Bluetooth MESH protocol described in the embodiment 1.
The above embodiments are only for illustrating the technical solution of the present invention, and are not limiting; although the invention has been described in detail with reference to the foregoing embodiments, it will be appreciated by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims (4)
1. The device stability control method based on the Bluetooth MESH protocol is characterized by comprising the following steps:
networking equipment; the gateway is utilized to carry out network distribution operation on the node equipment and the switch equipment so as to form an MESH network, and the network distribution process is carried out by using a standard Bluetooth MESH protocol network distribution flow;
the equipment forms a communication network with a subscription-release mode; the gateway, the switch equipment and the node equipment form a subscription-release mode by using subscription-release instructions in a Bluetooth MESH protocol; the node equipment subscribes to a certain group address by using a subscription instruction in the Bluetooth MESH protocol, and the switch equipment configures a target address of the switch equipment to be a group address consistent with the node equipment by using an issuing instruction; the gateway subscribes to the same group address as the node equipment by using a subscription instruction, and the gateway records the node equipment information, including which node equipment exists under a certain group address and the state information of the current node equipment;
after the switch equipment controls the node equipment, the gateway judges whether to retransmit the message, if the gateway judges that the switch equipment does not successfully control the node equipment, the gateway sends a control instruction to the node equipment;
after the switch equipment controls the node equipment, the gateway judges whether to retransmit the message, and if the gateway judges that the switch equipment does not successfully control the node equipment, the gateway sends a control instruction to the node equipment comprises the following steps:
the gateway obtains node equipment information;
when the switch equipment sends a control instruction to the node equipment, the switch equipment also sends the control instruction to the gateway, and the gateway then makes clear the control intention;
after receiving the control instruction to perform corresponding operation, the node equipment reports an execution result to the gateway;
the gateway judges whether all the node devices receive the execution report results in sequence according to the node device information, and if the gateway receives the execution report results of all the node devices, the number of the node devices is consistent with the number of the reported execution results, the gateway indicates that the switch device is successfully controlled; if the node equipment report is not received or part of the node equipment report is received, the failure of the control of the switch equipment is indicated;
after the gateway judges that the control of the switch equipment fails, the gateway simulates the switch to resend the control instruction to the node equipment according to the control intention reported by the switch equipment.
2. The method for controlling equipment stability based on bluetooth MESH protocol according to claim 1, wherein the node equipment is a lamp group, and the switch equipment is a lighting switch equipment.
3. The method for controlling equipment stability based on bluetooth MESH protocol according to claim 2, wherein the status information of the node equipment includes a lamp group brightness and a switch status.
4. A system for controlling equipment stability based on bluetooth MESH protocol, the system comprising a gateway, a node device and a switch device, wherein the system realizes message retransmission by the equipment stability control method based on bluetooth MESH protocol according to any one of claims 1-3.
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