WO2021121372A1

WO2021121372A1 - Method for implementing control of wireless passive switch, wireless passive switch, and proxy node

Info

Publication number: WO2021121372A1
Application number: PCT/CN2020/137546
Authority: WO
Inventors: 夏建明
Original assignee: 苏州欧普照明有限公司; 欧普照明股份有限公司
Priority date: 2019-12-18
Filing date: 2020-12-18
Publication date: 2021-06-24
Also published as: CN111083654B; CN111083654A

Abstract

The present invention relates to a method for implementing control of a wireless passive switch by means of a proxy node, comprising: a wireless passive switch sends a message word load packet to the proxy node in high frequency; after receiving the message word load packet, the proxy node decrypts the message word load packet using a secret key; after the proxy node decrypts the message word load packet successfully, the proxy node converts the successfully decrypted message word load packet into a data packet adapted to a wireless network, and transmits the data packet to a gateway; after receiving the data packet, the gateway performs de-duplication processing according to serial numbers in the data packet, and executes a command in the data packet. By means of the method, the switch can be safely and efficiently accessed to an existing wireless control system, thereby realizing a new control system. The method is people-oriented, energy-saving, and environment-friendly, meet basic switch requirements, and realizes better user experience.

Description

Method for realizing control of wireless passive switch, wireless passive switch, and proxy node

Technical field

The invention belongs to the field of intelligent control, and is specifically a method for realizing control of a wireless passive switch.

Background technique

With the development of intelligent control technology, it has been applied in industrial, commercial, and civil lighting environments, such as shopping malls, landscape lights, and indoor lighting. The lighting function has also been extended infinitely. In addition to traditional wired systems, the emergence of wireless control systems provides more possibilities in more occasions, such as the transformation of traditional projects. Regardless of cost or convenience, wireless control has great advantages.

Passive wireless switch is a wireless sensor network that converts the tiny energy in the environment into electric energy and realizes its own function. The micro energy converter converts mechanical energy, light energy, and temperature difference energy into electrical energy. Combined with an efficient energy management system, energy harvesting technology allows maintenance-free IoT devices to connect and communicate based on international wireless standards such as Bluetooth and zigbee. This greatly improves the flexibility and energy efficiency of the intelligent system, while saving time and cost.

In the actual use of passive wireless switches, there are the following problems:

1. The contradiction between low energy and effective data of wireless passive switch. The energy of wireless passive switching is limited, and the time of existence is also very short. Therefore, how to send enough information in a short time to control and adapt to different system controls is a huge challenge. Therefore, the low-power startup and operation of the wireless control module, and the high efficiency of wireless data control commands are the biggest problems.

2. Access system security issues. At present, the security of wireless systems is important. The current common zigbee, 433 or BLE Mesh have a set of safe management from the physical layer, link layer and other systems, but for wireless passive switches to achieve such a complex set of security Agreement is impossible.

3. Application function problems. The characteristics of wireless passive switches determine that the control commands are simple and efficient, and at the same time, the controlled system needs to be able to adapt. How to adapt the same switch to different scenarios and devices is a big challenge.

4. The issue of effective range. Because it is wireless and passive, the signal strength of the transmitted radio frequency must be limited. The biggest advantage of the wireless Mesh system is that the nodes communicate with each other and expand the range of action. Therefore, how to combine the characteristics of the two is a challenge for the efficient operation of the system.

Summary of the invention

The purpose of the present invention is to solve the problems existing in the prior art, and propose a new type of wireless passive switch realization control method, wireless passive switch, and proxy node.

Technical solution 1: A wireless passive switch realizes control through the proxy node. The wireless passive switch sends a message word load packet to the proxy node at a high frequency; the proxy node uses the secret key to load the message word after receiving the message word load packet. The packet is decrypted; when the proxy node successfully decrypts the message word payload packet, the proxy node converts the successfully decrypted message word payload packet into a data packet adapted to the wireless network, and transparently transmits it to the gateway; after the gateway receives the data packet , Perform de-duplication processing according to the sequence number in the data packet, and execute the commands in the data packet.

Further, before the wireless passive switch sends a message word load packet to the proxy node at a high frequency, the proxy node has been networked and connected to the gateway.

Further, the wireless passive switch distribution network is connected to a network including a proxy node.

Further, the wireless passive switch distribution network access to the network including the proxy node includes: the wireless passive switch transmits a network access broadcast packet to the proxy node; the proxy node receives the network access broadcast packet and receives The MAC address and secret key of the wireless passive switch are parsed from the network access broadcast packet.

Further, when multiple wireless passive switches access the network through a proxy node, the proxy node receives different secret keys sent by the multiple wireless passive switches.

Further, when a plurality of different secret keys are stored in the proxy node, the proxy node sequentially uses the different secret keys to decrypt the received message word payload packet.

Further, the message word payload packet includes the MAC address, serial number, and control command of the wireless passive switch.

Further, the gateway performs deduplication processing according to the serial number in the data packet, including, when multiple data packets are received, checking whether the serial numbers in the multiple data packets are the same, and if there are data packets with the same serial number, then Eliminate duplicate data packets.

Technical Solution 2: A wireless passive switch, including a power generation module, a main control module, a broadcast module, and a button panel; the main control module is separately and a power generation module, a broadcast module, and a button panel Electrical connection; the non-derived power generation module is configured to convert the mechanical energy generated by the button action when the user presses the button panel into electrical energy, and supply power to the main control module; when the wireless passive switch is in the network, the main The control module generates the network access broadcast packet, and sends the network access broadcast packet to the agent node through the broadcast module; when the wireless passive switch realizes control, the main control module generates the message word load packet, and sends the message word load to the agent node through the broadcast module package.

Further, the network access broadcast packet includes the MAC address of the wireless passive switch and the secret key.

Technical Solution 3: A proxy node, including a receiving module, a processor, and a sending module; the processor is electrically connected with the receiving module and the sending module; when the wireless passive switch is connected to the network through the proxy node, the receiving The module receives the network access broadcast packet sent by the wireless passive switch and sends it to the processor; the processor parses the received network broadcast packet to obtain the MAC address and secret key of the wireless passive switch; When the switch sends a control signal through the proxy node, the receiving module receives the message word load packet sent by the wireless passive switch and sends it to the processor; the processor uses the secret key sent by the wireless passive switch to decrypt the message word load packet; The processor converts the successfully decrypted message word load packet into a data packet adapted to the wireless network, and transparently transmits it to the gateway through the sending module.

Further, the proxy node further includes a power supply module; the power supply module is configured to supply power to the processor.

Further, the proxy node further includes a memory; the memory is configured to store the MAC address and secret key of the wireless passive switch parsed by the processor.

Further, if multiple wireless passive switches access the network through the same proxy node, the secret keys corresponding to different wireless passive switches are used in turn for decryption.

The beneficial effects of the present invention are as follows: The advantages of the control method of the wireless passive switch in the present invention are as follows: 1. Multi-level emission intensity level management, which can effectively control the range of action of the switch, and can well solve the limited range and work of the partner node A wide range of requirements; 2. System security, the access of the main control equipment of any controllable system will not be imitated or interfered. 3. The switch command is compatible with the Mesh command, and the communication is completed in the most efficient way through the definition of the protocol in the limited data length. In general, this method can safely and efficiently connect the switch to the existing wireless control system, realizing a new control system that is people-oriented, in addition to basic switch requirements, energy saving and environmental protection, and a better user experience.

Description of the drawings

In order to explain the technical solutions in the embodiments of the present invention more clearly, the following will briefly introduce the drawings needed in the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained from these drawings without creative labor.

FIG. 1 is a schematic diagram of the internal circuit structure of a preferred wireless passive switch according to an embodiment of the present invention;

2 is a schematic diagram of a preferred wireless passive switch configuration and access to the network according to an embodiment of the present invention;

3 is a topological diagram of a preferred wireless passive switch control network structure according to an embodiment of the present invention;

FIG. 4 is a schematic flowchart of a preferred wireless passive switch control according to an embodiment of the present invention;

Fig. 5 is a schematic diagram of a preferred proxy node structure according to an embodiment of the present invention.

Detailed ways

In order to make the objectives, technical solutions, and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of them. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

The present invention will be further described below in conjunction with the accompanying drawings.

Example one

Fig. 1 is a schematic diagram of the internal circuit structure of a preferred wireless passive switch according to an embodiment of the present invention.

As shown in FIG. 1, the wireless passive switch 1 includes a power generation module 11, a main control module 12, a broadcasting module 13, a memory 14, and a button panel 15. Among them, the main control module 12 is electrically connected to the non-sourced power generation module 11, the broadcasting module 13, the memory 14, and the key panel 15 respectively. The power generation module 11 is not derived from the power generation module 11 and provides electrical energy for the operation of the main control module 12, and can convert mechanical energy or other micro-energy generated by the button action when the user presses the button panel 15 into electrical energy and store the electrical energy. The broadcasting module 13 is configured to broadcast messages to the outside world.

The memory 14 is configured to store the security key, device information, load package definition, command serial number, and related content of the system configuration of the wireless passive switch 1. The above content can be set by the user, so that the user can pass through the entire system control method NFC/FLASH reader or other supported methods to complete the reading and writing of this area. The independent design of this part is related to the security of the subsequent system, pairing access, etc., and is one of the reliable designs.

The button panel 15 is configured to receive the settings of the wireless passive switch 1 made by the user.

The main control module 12 is configured to control the operation of the entire wireless passive switch 1.

FIG. 2 is a schematic diagram of the flow of configuring and connecting the wireless passive switch 1 to the network according to an embodiment of the present invention.

As shown in Figure 2, the process of configuring wireless passive switch 1 to access the network is as follows:

S21. Complete the wireless networking of all physical nodes 2;

Specifically, according to the original wireless system networking, all physical nodes 2 enter the gateway system; the networking mode can be zigbee, or BLE MESH networking, physical node 2 is multiple wireless passive switches 1 Controlled lamps 2.

S22. Select a nearby physical node 2 that is more convenient to operate as the proxy node 21, and the proxy node 21 enters the pairing waiting state and searches for broadcast packets;

Specifically, the most convenient node is selected as the agent node 21, and the agent node 21 enters the pairing learning mode and starts to search for the wireless key package of the switch.

S23. The wireless passive switch 1 enters the configuration network access mode, and transmits network access broadcast packets at low power;

Specifically, the wireless passive switch 1 enters the configuration network access mode, and the network access broadcast packet is transmitted at low power; the network access broadcast packet includes the MAC information and secret key information of the wireless passive switch 1 at the same time, and the selected transmit power level is lower at this time , The effective distance is guaranteed to be within 0.5m. The lower transmission power can avoid the situation that multiple nodes on the same strong line are in the broadcast waiting mode at the same time and will learn at the same time. The low-power transmission of network access broadcast packets is to avoid subsequent network storms, because if a higher power is used to transmit network access broadcast packets, multiple physical nodes 2 will receive the network broadcast packet, so multiple physical nodes 2 become proxy nodes 21. When the subsequent wireless passive switch 1 sends a message word load packet with high power, multiple proxy nodes 21 can process the message word load packet, convert the message word load packet into a data packet, and send it in the network, which is likely to cause the network Load storm.

S24. If the proxy node 21 finds the network access broadcast packet, it will parse out the MAC address and secret key of the wireless passive switch 1 from the network access broadcast packet; if the network access broadcast packet is not found, continue the search;

Specifically, if the proxy node 21 finds the network access broadcast packet, the MAC address and secret key of the wireless passive switch 1 are parsed from the network access broadcast packet, and stored in the proxy node 21; if the wireless passive switch 1 cannot be searched The network broadcast packet sent will continue to search. Among them, the secret key corresponding to each MAC address is different.

S25. After the agent node 21 is paired, exit the pairing mode.

Fig. 3 is a topological diagram of a preferred wireless passive switch control network structure according to an embodiment of the present invention.

After completing the physical addition of the passive wireless switch 1 in the system, the actual wireless passive switch 1 has been connected to the system, but it is through each node in the system as an agent, between the passive wireless switch 1 and the agent node 21 It is a virtual device, so the device must be configured in the system to actually make it control the system.

The configuration of the virtual device here is based on the actual wireless system, involving the cloud server 4, the gateway 3, the physical node 2, and the wireless passive switch 1. The main working topology diagram of each part is shown in Fig. 3.

Cloud server 4: Processing the various parameters of the wireless passive switch 1 in this embodiment involved in the system; it can be a different wireless network system. Mainly include: a. According to the unique MAC of the switch, apply for the number of the cloud virtual device in the system; all parameters are bound to this number for transmission; b. Parameter selection and setting: load information corresponding to each button of the device Packet, encryption and decryption algorithm, format type; c. The command association of the wireless local area network executed by the rule.

Gateway 3: Synchronize the cloud-related configuration to the gateway side. The gateway is the central control of the system. According to the configuration information, complete the physical pairing of the switch, the switch action triggers the steps of data packet security authentication and analysis, comparison, etc.

Wireless local area network 5: On the one hand, it acts as a proxy for the transmission path of the control data packet of the wireless passive switch 1; on the other hand, it executes the objects and actions controlled by the wireless passive switch 1 from the gateway side;

Wireless passive switch 1: It is the main trigger device, and the related configuration of the basic device is set in the cloud to realize the linkage in the whole system. In this method, the device itself is simple, configurable, and highly flexible.

According to the various modules of the system, complete the configuration and definition of the functions and capabilities of the switch, which is suitable for various application scenarios. Key parameters include: switch encryption and decryption algorithms, data load format, key capability table, triggering rules, etc. In this way, any switch can ensure the only safe control network after accessing the system, and realize different functions. These do not need to do the secondary development of the switch, the system configuration is enough. Of course, if the small closed network does not include the gateway, the cloud configuration cannot be realized. Here, the control method is also reserved in the system design, because the defined data load packet is checked by the agent node 21, if the agent node 21 is not configured to enter the network , Then directly analyze the data load and directly turn it into the command load of the wireless network. The definition is consistent and direct control can be realized.

Fig. 4 is a schematic flow diagram of a preferred wireless passive switch control according to an embodiment of the present invention.

As shown in Figure 4, the process of wireless passive switch control is as follows:

S41. The wireless passive switch 1 connected to the system sends a message word load packet;

Specifically, since in Figure 2, the wireless passive switch 1 has been connected to the system through the proxy node 21, when the wireless passive switch 1 wants to control a physical node, the user can press the button on the wireless passive switch 1 to generate The message word load packet corresponding to the key press action includes the serial number of the wireless passive switch 1, the message word load, and the MAC information of the wireless passive switch 1 in the message word load packet. Among them, if the physical node is a lamp, the message word load packet is a dimming command.

Before sending the message word payload packet, the data can be streamlined and compressed according to different network types and length requirements. When sending a message word load packet, it is sent in a high-transmission power mode, and as much data as possible is sent with limited energy.

S42. After receiving the message word load packet, the proxy node 21 uses the secret key to decrypt and verify the message word load packet;

Specifically, after receiving the message word load packet sent by the wireless passive switch 1, the proxy node 21 uses the secret key received during the previous wireless passive switch configuration and access to the network to decrypt the message word load packet. The secret key corresponding to each MAC address is different. If multiple wireless passive switches 1 are accessed through the same proxy node 21, the secret keys corresponding to different wireless passive switches 1 are used in turn for decryption.

If a secret key is successfully decrypted, it means that the wireless passive switch 1 that sends the message word payload packet is the wireless passive switch 1 that has successfully accessed through the proxy node 21; if all secret keys are unsuccessful in decryption, it means that the message is sent The wireless passive switch 1 of the word load packet fails to access the system through the proxy node 21.

S43. The proxy node 21 converts the successfully decrypted message word payload packet into a data packet adapted to the wireless network, and transparently transmits it to the gateway 3;

Specifically, after the decryption is successful in step S42, the proxy node 21 converts the successfully decrypted message word payload packet into a data packet adapted to the wireless network, and transparently transmits the data packet to the gateway 3.

S44. After receiving the data packet, the gateway 3 performs deduplication processing according to the serial number, and executes the command in the data packet;

Among them, de-duplication is performed according to the serial number. For example, when multiple data packets sent by the same wireless passive switch 1 are received, compare whether there are multiple data packets with the same serial number, and if they exist, remove duplicate data package.

After de-duplication, the gateway 3 executes the control commands in the data packet, and performs specified operations on the corresponding nodes, such as switching of the entire network or part of the nodes, level control, etc., when the node is a lamp, it can perform dimming, Toning command.

As shown in FIG. 5, the proxy node 21 includes a receiving module 212, a processor 211, a sending module 213, a memory 214, and a power supply module 215. Among them, the processor 211 is connected to the receiving module 212, the sending module 213, the memory 214, and the power supply module 215, respectively. The power module 215 provides power to the processor 211.

When the wireless passive switch 1 accesses the system through the proxy node 21, the receiving module 212 of the proxy node 21 receives the network access broadcast packet sent by the wireless passive switch 1, and sends it to the processor 211; the processor 211 responds to the received The network access broadcast packet is analyzed, and the MAC address and secret key of the wireless passive switch 1 are obtained by the analysis, and the MAC address and secret key of the wireless passive switch 1 are stored in the memory 214.

When the wireless passive switch 1 sends a control signal through the proxy node 21, the receiving module 212 of the proxy node 21 receives the message word load packet sent by the wireless passive switch 1 and sends it to the processor 211; the processor 211 uses the wireless passive switch 1 The sent secret key decrypts the message word payload packet. If multiple wireless passive switches 1 access through the same proxy node 21, they will use the secret keys corresponding to different wireless passive switches 1 to decrypt in turn. If there is a secret If the key is successfully decrypted, it means that the wireless passive switch 1 that sends the message word load packet is the wireless passive switch 1 that has successfully accessed through the proxy node 21; if all the secret keys are unsuccessful in decryption, it means that the message word load packet is sent The wireless passive switch 1 fails to access the system through the proxy node 21.

When the decryption is successful, the processor 211 converts the successfully decrypted message word payload packet into a data packet adapted to the wireless network, and sends it to the sending module 213, and the sending module 213 transparently transmits the data packet adapted to the wireless network to the gateway 3.

Although the preferred embodiments of the present invention have been described, those skilled in the art can make additional changes and modifications to these embodiments once they learn the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications falling within the scope of the present invention.

Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. In this way, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalent technologies, the present invention is also intended to include these modifications and variations.

Claims

A wireless passive switch realizes control through a proxy node, wherein:

The wireless passive switch sends message word load packets to the agent node at a high frequency;

After receiving the message word payload packet, the proxy node uses the secret key to decrypt the message word payload packet;

When the agent node successfully decrypts the message payload packet,

The proxy node converts the successfully decrypted message word load packet into a data packet adapted to the wireless network, and transparently transmits it to the gateway;

After receiving the data packet, the gateway performs deduplication processing according to the sequence number in the data packet, and executes the commands in the data packet.
The method for realizing control of a wireless passive switch according to claim 1, wherein:

Before the wireless passive switch sends a message word load packet to the proxy node at a high frequency,

The agent node has been networked and connected to the gateway.
The method for realizing control of a wireless passive switch according to claim 2, wherein:

The wireless passive switch is connected to the network including the proxy node.
The method for realizing control of a wireless passive switch according to claim 3, wherein:

The wireless passive switch distribution network access to the network including the proxy node includes:

The wireless passive switch transmits a network access broadcast packet to the agent node;

The proxy node receives the network access broadcast packet, and parses the MAC address and secret key of the wireless passive switch from the network access broadcast packet.
The method for realizing control of a wireless passive switch according to claim 4, wherein:

When multiple wireless passive switches are connected to the network through proxy nodes,

The proxy node receives different secret keys sent by multiple wireless passive switches.
The method for realizing control of a wireless passive switch according to claim 5, wherein:

When multiple different secret keys are stored in the agent node,

The proxy node sequentially uses different secret keys to decrypt the received message word payload packet.
The method for realizing control of a wireless passive switch according to claim 1, wherein:

The message word payload packet includes the MAC address, serial number, and control command of the wireless passive switch.
The method for realizing control of a wireless passive switch according to claim 7, wherein:

The gateway performs de-duplication processing according to the sequence number in the data packet, including:

When multiple data packets are received, check whether the sequence numbers in the multiple data packets are the same, and if there are data packets with the same sequence number, remove duplicate data packets.
A wireless passive switch, including a source-free power generation module, a main control module, a broadcast module, and a button panel; wherein,

The main control module is electrically connected to the non-sourced power generation module, the broadcast module, and the key panel respectively;

The source-free power generation module is configured to convert the mechanical energy generated by the button action when the user presses the button panel into electrical energy, and supply power to the main control module;

When the wireless passive switch is configured to the network, the main control module generates a network access broadcast packet, and sends the network access broadcast packet to the agent node through the broadcast module;

When the wireless passive switch realizes control, the main control module generates a message word load packet, and sends the message word load packet to the proxy node through the broadcast module.
The wireless passive switch according to claim 9, wherein:

The network access broadcast packet includes the MAC address of the wireless passive switch and the secret key.
The wireless passive switch according to claim 9, wherein:

The message word payload packet includes the MAC address, serial number, and control command of the wireless passive switch.
A proxy node includes a receiving module, a processor, and a sending module; wherein,

The processor is electrically connected to the receiving module and the sending module, respectively;

When the wireless passive switch accesses the network through the proxy node, the receiving module receives the network access broadcast packet sent by the wireless passive switch and sends it to the processor; the processor parses the received network broadcast packet to obtain The MAC address and secret key of the wireless passive switch;

When the wireless passive switch sends the control signal through the proxy node, the receiving module receives the message word load packet sent by the wireless passive switch and sends it to the processor; the processor uses the secret key sent by the wireless passive switch to perform the message word load packet Decrypt

The processor converts the successfully decrypted message word load packet into a data packet adapted to the wireless network, and transparently transmits it to the gateway through the sending module.
The proxy node according to claim 12, wherein:

The agent node also includes a power supply module;

The power supply module is configured to supply power to the processor.
The proxy node according to claim 12, wherein:

The agent node also includes a memory;

The memory is configured to store the MAC address and secret key of the wireless passive switch parsed by the processor.
The proxy node according to claim 12, wherein:

If multiple wireless passive switches access the network through the same proxy node, the secret keys corresponding to different wireless passive switches are used in turn for decryption.