Smart home control system and control method

Abstract

The application discloses an intelligent home control system and a control method, the intelligent home control system comprises a core control unit, an intelligent central control screen, a local artificial intelligence processing module, a control signal expansion module and an Internet of Things gateway, the core control unit is integrated with a building intercom communication interface and an elevator control interface, the building intercom communication interface is used for being communicatively connected with a building video intercom system, the elevator control interface is used for being communicatively connected with an elevator control system, the elevator control interface is also used for sending an elevator dispatching instruction to the elevator control system and receiving an elevator operation state, the core control unit communicates with a plurality of intelligent home devices through a power line carrier Internet of Things communication network, and the intelligent central control screen is integrated with a building video intercom interface and an elevator control interface. The application deeply integrates the intelligent home system with the building video intercom and the elevator control system at the software and interface levels, and can display an elevator state and make a reservation for calling an elevator in real time; when a visitor opens a door through intercom, an elevator can be automatically dispatched in linkage, so that the traffic efficiency and experience are greatly improved.

Description

Technical Field

[0001] This invention relates to the field of smart home technology, specifically to a smart home control system and control method. Background Technology

[0002] With the rapid development of the Internet of Things (IoT), artificial intelligence (AI), and wireless communication technologies, smart home systems have gradually entered residential and commercial environments, bringing users a convenient, comfortable, and energy-efficient living experience. However, current smart home systems on the market typically only offer basic functions such as lighting control, motorized curtain control, and security alarm control. Their control methods are limited, lacking advanced intelligent capabilities such as scene linkage, environmental adaptation, voice interaction, and remote fine-tuning control, falling far short of the standards and user expectations expected of a true smart home system. Furthermore, traditional smart homes often employ wired bus architectures or rely solely on Wi-Fi wireless communication, leading to the following problems:

[0003] 1) Traditional smart home systems typically only control their own devices such as indoor lighting, curtains, and air conditioning, and cannot effectively communicate with public facilities within the building (such as video intercom systems and elevator control systems). Users need to operate the intercom unit individually, manually call the elevator, and then control the home devices separately, resulting in fragmented operation and a poor user experience. For example, when a visitor calls, the user cannot automatically complete the elevator dispatch, lighting preset, and other linked operations on the same interface as opening the intercom door;

[0004] 2) Wired systems have complex cabling, high costs for modification and maintenance, and are susceptible to physical damage. Pure Wi-Fi systems are prone to problems such as channel interference, unstable connection, response delay, and even disconnection when the number of devices increases, affecting the daily user experience.

[0005] 3) The lack of a unified user interface and intelligent linkage logic means that users need to manage different devices separately, scene linkage requires complex settings, response speed is slow, and troubleshooting is difficult. Summary of the Invention

[0006] The technical problem to be solved by the present invention is to address the shortcomings of the prior art by providing a smart home control system that integrates smart home systems with building intercom systems and elevator control systems, accesses local artificial intelligence processing modules, achieves multimodal perception, makes operation more intelligent and convenient, integrates multi-channel control signal expansion modules and IoT gateways, has stronger compatibility, and saves on equipment investment costs, construction costs and maintenance costs.

[0007] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0008] This invention provides a smart home control system, which includes a core control unit, a smart central control screen, a local artificial intelligence processing module, a control signal expansion module, and an IoT gateway. The core control unit is communicatively connected to the local artificial intelligence processing module and the IoT gateway, respectively.

[0009] The core control unit integrates a building intercom communication interface and an elevator control interface. The building intercom communication interface is used to communicate with the building video intercom system, and the elevator control interface is used to communicate with the elevator control system. The elevator control interface is also used to send elevator dispatch commands to the elevator control system and receive elevator operating status.

[0010] The core control unit communicates with several smart home devices via a power line carrier IoT communication network.

[0011] The local artificial intelligence processing module is deployed locally and is used to process multimodal user commands and generate collaborative control strategies, and send the strategies to the core control unit;

[0012] The control signal extension module is communicatively connected to the core control unit and is used to realize the acquisition of security sensor signals and the control of non-intelligent connected devices;

[0013] The IoT gateway is used to communicate with external smart devices and to convert between the first communication protocol used by the external smart devices and the second communication protocol used by the core control unit, so as to realize data interaction between the external smart devices and the core control unit.

[0014] The intelligent central control screen is communicatively connected to the core control unit, and integrates a building video intercom interface and an elevator control interface.

[0015] Furthermore, the smart home control system includes a power distribution box, which contains a PLC-IoT communication circuit and a non-PLC power supply circuit. The PLC-IoT communication circuit is used to connect several smart home devices through a power line carrier IoT communication network and to communicate with the core control unit. The non-PLC power supply circuit is used to provide power to IoT gateways and ordinary electrical devices.

[0016] Furthermore, the smart home control system includes a low-voltage box, which is equipped with a network wiring unit; the low-voltage box is communicatively connected to the core control unit via a network cable; the network wiring unit is used to access external network devices and HVAC gateways.

[0017] Furthermore, the smart home control system also includes a PLC isolator, which is installed in a power distribution box to electrically isolate the PLC-IoT communication circuit from the non-PLC power circuit.

[0018] Furthermore, the control signal expansion module includes a first control signal expansion module and a second control signal expansion module;

[0019] The first control signal extension module is communicatively connected to the core control unit and is used to acquire the switch signal output by the security sensor through the dry contact interface and convert the switch signal into a signal that can be recognized by the core control unit.

[0020] The second control signal extension module is communicatively connected to the core control unit and is used to convert the control signals of the core control unit into dry contact signals to control non-intelligent connected devices.

[0021] Furthermore, the first communication protocol includes at least one of RS485, Modbus, KNX, and SIP protocols, and the second communication protocol is the PLC-IoT protocol.

[0022] Furthermore, the intelligent central control screen is configured as follows:

[0023] Displays the elevator's real-time operating status and floor information;

[0024] Receives the user's elevator reservation instruction and sends a reservation dispatch command through the elevator control interface;

[0025] When responding to a visitor's intercom door opening command, the elevator automatically sends a dispatch command to the destination floor through the elevator control interface.

[0026] The present invention also provides a control method based on the aforementioned smart home control system, the control method comprising the following steps:

[0027] The local AI processing module receives multimodal commands from users, parses out the multiple intentions in a single command, and generates scenario-based control strategies.

[0028] The core control unit receives the scenario-based control strategy;

[0029] The core control unit determines whether the multimodal command is associated with building intercom or elevator control functions;

[0030] If so, the control commands are forwarded to the corresponding external system through the building intercom communication interface or elevator control interface, and the status feedback information is received and displayed on the smart central control screen;

[0031] If not, the core control unit controls the corresponding smart home devices or non-smart devices through at least one of the following: a PLC-IoT network, a control signal extension module, or an IoT gateway.

[0032] Furthermore, the local AI processing module performs natural language processing and intent parsing on the received voice commands entirely locally, without uploading any voice data to the cloud server.

[0033] Furthermore, the local artificial intelligence processing module has a built-in lightweight multimodal large model, and all data processing is completed locally without relying on an internet connection. Even when the network is disconnected, it can still generate scenario-based control strategies normally.

[0034] Compared with the prior art, the present invention has the following beneficial effects:

[0035] 1) The smart home control system of this invention includes a core control unit, a smart central control screen, a local artificial intelligence processing module, a control signal expansion module, and an IoT gateway. The core control unit is communicatively connected to the smart central control screen, the local artificial intelligence processing module, and the IoT gateway. The core control unit integrates a building intercom communication interface and an elevator control interface. The building intercom communication interface is used to communicate with a building video intercom system, and the elevator control interface is used to communicate with an elevator control system. The elevator control interface is also used to send elevator dispatch commands to the elevator control system and receive elevator operating status. The core control unit communicates with several smart home devices through a power line carrier IoT communication network. The control signal expansion module is communicatively connected to the core control unit and is used to realize the acquisition of security sensor signals and the control of non-smart devices. The smart central control screen integrates a building video intercom interface and an elevator control interface. This invention deeply integrates the smart home system with the building video intercom and elevator control system at the software and interface levels. The smart central control screen replaces the independent intercom indoor terminal and can display elevator status and schedule elevator calls in real time. When a visitor opens the door via intercom, it can automatically trigger elevator dispatch, greatly improving passage efficiency and experience.

[0036] 2) In the control method provided by this invention, the local artificial intelligence processing module runs completely offline. User voice commands can complete multi-intent parsing and scene strategy generation without uploading to the cloud, which is significantly better than traditional cloud solutions. Simultaneously, all user voice data is stored locally, eliminating the risk of privacy leaks. This control method also achieves unified scheduling of the smart home, building intercom, and elevator control systems: when a user opens the door with a visitor via intercom, the system automatically triggers elevator dispatch and home return scenarios, forming a complete "perception-decision-execution" closed loop, greatly improving accessibility and home intelligence. Since all data processing is completed locally, even if the external internet connection is interrupted, users can still control all connected devices normally via voice or touch, and the building intercom and elevator control functions are unaffected, making it particularly suitable for scenarios with unstable networks or high privacy requirements. Attached Figure Description

[0037] Figure 1This is a signal flow diagram of each module of the smart home control system of the present invention;

[0038] Figure 2 This is a system architecture diagram of the smart home control system of the present invention;

[0039] Figure 3 This is a wiring diagram showing the core control unit of the present invention, the power distribution box, and the low-voltage power lines.

[0040] Figure 4 This is a wiring diagram of the smart home control system of the present invention;

[0041] Figure 5 This is a flowchart illustrating the multi-system integration process of the present invention. Detailed Implementation

[0042] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0043] like Figures 1-4As shown in Embodiment 1 of the present invention, a smart home control system is provided. This smart home control system includes a core control unit, a smart central control screen, a local artificial intelligence processing module, at least a control signal expansion module, and an IoT gateway. The core control unit is communicatively connected to the local artificial intelligence processing module, the control signal expansion module, and the IoT gateway. The core control unit integrates a building intercom communication interface and an elevator control interface. The building intercom communication interface is used to communicate with a building video intercom system, and the elevator control interface is used to communicate with an elevator control system. The elevator control interface is also used to send elevator dispatch commands to the elevator control system and receive elevator operating status. Based on received user commands or system events, the core control unit uniformly schedules smart home devices, building intercom devices, and elevator devices. The system is configured as follows: The core control unit communicates with several smart home devices via a power line carrier IoT communication network; a local AI processing module is deployed locally to process multimodal user commands and generate collaborative control strategies, which are then sent to the core control unit; a control signal extension module communicates with the core control unit to collect security sensor signals and control non-smart devices; an IoT gateway communicates with external smart devices and performs protocol conversion between the first communication protocol used by the external smart devices and the second communication protocol used by the core control unit, thereby enabling data interaction between the external smart devices and the core control unit; a smart central control screen communicates with the core control unit and integrates a building video intercom interface and an elevator control interface. In this embodiment, the smart central control screen replaces the traditional building intercom indoor terminal, requiring no additional installation. When a visitor presses the doorbell of the door station, the door station sends a call request to the core control unit, which forwards it to the smart central control screen. The user can then see the visitor's image and make calls or open the door.

[0044] This invention integrates both a building intercom communication interface and an elevator control interface into a core control unit, replacing the traditional separate intercom terminal with a smart central control screen. Users can perform operations such as visitor intercom, remote door opening, elevator calling, and home device control on a single interface. When responding to a visitor intercom door opening command, the system can automatically send an elevator dispatch command to the destination floor through the elevator control interface, eliminating the need for manual elevator operation. Simultaneously, it can coordinate with indoor lighting, air conditioning, and other equipment to prepare in advance, truly achieving "service upon entry." The real-time elevator operating status can be directly displayed on the smart central control screen, allowing users to easily track the elevator's location. The local artificial intelligence processing module is entirely deployed locally, without relying on cloud services. Sensitive user data such as voice and images do not need to be uploaded to the internet, fundamentally eliminating the risk of privacy leaks. The core control unit connects multiple smart home devices through a power line carrier IoT communication network, utilizing existing power lines to transmit control signals without additional wiring, and boasts strong wall penetration and wide coverage.

[0045] The core control unit set in this invention is preferably model HC-PLC-H01. The core control unit adopts a high-performance embedded processor, runs a distributed operating system (such as HarmonyOS), and has the following interfaces:

[0046] RJ45 Ethernet interface (input): Receives multimodal user commands from the smart central control screen;

[0047] RJ45 Ethernet interface (output): forwards received voice commands or complex touch commands to the local offline artificial intelligence processing module and waits for the parsing results;

[0048] Dual RS485 interfaces (output): connected to the first control signal expansion module and the second control signal expansion module respectively, used to send acquisition configuration or control commands to the control signal expansion module, and receive sensor status or execution feedback from the control signal expansion module;

[0049] PLC-IoT interface (output): Connects to native smart devices such as smart switches, light drivers, and curtain motors throughout the house via a power line carrier IoT communication network;

[0050] Local Area Network Interface (Output): Connects to the IoT gateway via Ethernet to enable indirect control of external smart devices.

[0051] The preferred model of the local artificial intelligence processing module (AI-HW-EDGE-01, also known as the AI ​​Smart Box) used in this invention is an independent edge computing device, deployed entirely locally and not dependent on cloud servers. Its hardware includes a quad-core ARM Cortex-A76 processor, an integrated NPU (Neural Processing Unit, with a computing power of 6 TOPS), 4GB LPDDR4X memory, and 32GB eMMC storage. The module's operating system is a lightweight Linux, and it contains a built-in quantized lightweight multimodal large model (approximately 300 million parameters).

[0052] Input: The local AI processing module receives user command data forwarded by the core control unit via an RJ45 Ethernet interface. For voice commands, the core control unit sends them as PCM or OPUS encoded audio streams; for touch commands, they are sent in JSON format.

[0053] Internal processing: The local AI processing module first performs VAD (Voice Activity Detection) and ASR (Automatic Speech Recognition) on the voice stream to convert the speech into text; then it uses a large model to perform Natural Language Understanding (NLU) to parse out multiple intentions in a single command (e.g., "I'm home, it's a bit hot" is parsed as "Home Mode" or "Air Conditioner Temperature Adjustment"); finally, it combines device status and user history to generate a scenario-based control strategy that includes multi-device linkage logic, represented in structured data (JSON).

[0054] Output: The local AI processing module transmits the generated policy instructions back to the core control unit via the RJ45 Ethernet interface. The entire parsing and generation process is completed offline locally without sending any data to the Internet.

[0055] The preferred model for the intelligent central control screen is the HP-Screen-10 smart touchscreen. This screen features a built-in capacitive touch panel and a dual-microphone array, supporting multi-touch operation and far-field voice wake-up. Its inputs include user touch signals and voice signals. The output is connected to the core control unit via an RJ45 Ethernet interface, uploading touch events and compressed voice streams to the core control unit using the TCP / IP protocol. The intelligent central control screen also integrates a building video intercom interface and an elevator control interface, which can directly display the door station screen and the real-time status of the elevator.

[0056] The IoT gateway selected is the GW-HW-05 multi-protocol IoT gateway.

[0057] The smart home control system provided by this invention uses a core control unit as its core control unit. The smart central control screen communicates with the core control unit via an RJ45 Ethernet interface to receive user human-computer interaction commands (such as touch and voice) and send them to the core control unit. The core control unit forwards the received multimodal commands (including voice, touch, and intercom video operations) to a local artificial intelligence processing module. This local artificial intelligence processing module has a built-in lightweight multimodal large model, is fully locally deployed, and is used to complete semantic parsing, multi-intent recognition, and scenario-based control strategy generation, and then sends the generated strategy commands back to the core control unit.

[0058] In practice, the building intercom communication interface on the core control unit is a SIP (Session Initiation Protocol) compatible interface, and the elevator control interface is an RS485 serial communication interface. These interfaces are connected to the corresponding communication ports or floor call signal terminals of the elevator control cabinet via shielded twisted-pair cables or control cables. The core control unit also connects to smart home devices (lights, curtains, air conditioners, etc.), human-machine interaction terminals (smart central control screens), and edge AI processing units (local AI processing modules), thus forming a unified control core.

[0059] The smart home control system of this invention includes a power distribution box, which contains a PLC-IoT communication circuit and a non-PLC power supply circuit. The PLC-IoT communication circuit is used to connect several smart home devices via a power line carrier IoT communication network and communicate with the core control unit. The non-PLC power supply circuit is used to provide power to the IoT gateway and ordinary electrical devices. In this embodiment, the PLC-IoT communication circuit uses BV-3×2.5 wire (3-core, 2.5mm² cross-sectional area copper core PVC insulated wire) to connect multiple smart home devices, including at least one of the following: smart switch, temperature control switch, spotlight driver, light strip driver, curtain motor, human body sensor, smoke sensor, and music speaker. The non-PLC power supply circuit uses BV-2×2.5 wire (2-core, 2.5mm² cross-sectional area copper core PVC insulated wire) to provide power to the IoT gateway and ordinary electrical devices.

[0060] The smart home control system of this invention includes a low-voltage distribution box, which houses a network cabling unit. The low-voltage distribution box is communicatively connected to a core control unit via a network cable. The network cabling unit is used to access external network devices and HVAC gateways. In this embodiment, the network cabling unit within the low-voltage distribution box can be a gigabit switch or a patch panel. The core control unit has one or more RJ45 Ethernet interfaces, which are communicatively connected to the network cabling module within the low-voltage distribution box via network cables. The network cables are CAT6 network cables (Category 6 unshielded twisted-pair cables).

[0061] In this embodiment, the external network device includes an external fiber optic interface, an information socket, or a router. The HVAC gateway is an HVAC protocol conversion gateway. The external fiber optic cable is converted into an Ethernet signal by an optical modem and then connected to the network distribution module. The information socket is an RJ45 wall socket in each room, connected to the network distribution module. The router is also connected to the network distribution module, providing Wi-Fi and routing functions. The HVAC gateway is an HVAC protocol conversion gateway (e.g., a gateway supporting Modbus RTU to BACnet / IP or PLC-IoT protocols), also connected to the network distribution module. The core control unit collects the status of the HVAC system (central air conditioning, fresh air system, underfloor heating) through this HVAC gateway and sends control commands.

[0062] In specific implementation, the local artificial intelligence processing module of this invention is configured as follows:

[0063] Receive and parse a single user voice command containing multiple operational intentions;

[0064] Based on the analysis results, control commands for at least two different smart home subsystems are generated and output synchronously.

[0065] The local artificial intelligence processing module set up in this invention can receive and parse a single voice command containing multiple operational intentions, and simultaneously generate and output control commands for at least two different smart home subsystems. Users do not need to issue commands multiple times, greatly improving interaction efficiency and conforming to natural dialogue habits.

[0066] The smart home control system of this invention also includes a PLC isolator, which is installed in the power distribution box to electrically isolate the PLC-IoT communication circuit from the non-PLC power circuit. By setting up the PLC isolator, effective electrical isolation can be achieved between the PLC-IoT communication circuit and the non-PLC power circuit. On the one hand, this prevents electromagnetic interference and pulse noise generated by IoT gateways and ordinary electrical devices in the non-PLC power circuit from coupling into the PLC-IoT communication circuit through the power lines, thereby ensuring the transmission quality and communication reliability of the PLC-IoT carrier signal. On the other hand, it also blocks the leakage of high-frequency carrier signals from the PLC-IoT communication circuit to the non-PLC power circuit, preventing malfunctions of non-smart devices or communication attenuation due to signal reflection. Furthermore, this PLC isolator also improves the electrical safety within the power distribution box and reduces the mutual influence of short circuits or overload faults between circuits.

[0067] The control signal expansion module of the present invention includes a first control signal expansion module and a second control signal expansion module. The first and second control signal expansion modules are preferably IO-HW-16R expansion modules. The first and second control signal expansion modules are connected in parallel, which can expand the number of non-smart terminal devices that can be connected and improve system scalability. Specifically, the first control signal expansion module is communicatively connected to the core control unit and is used to acquire the switch signals output by the security sensor through a dry contact interface and convert the switch signals into signals recognizable by the core control unit. The second control signal expansion module is communicatively connected to the core control unit and is only used to convert the control signals of the core control unit into dry contact signals to control non-smart devices.

[0068] In this embodiment, the dry contact interface (i.e., input terminal) of the first control signal expansion module is connected to multiple security sensors, including at least one of a door magnetic sensor, emergency button, smoke sensor, water immersion sensor, and temperature and humidity sensor. The dry contact interface of the first control signal expansion module is connected to at least one of these security sensors via signal lines. The dry contact output terminal (COM / NO or COM / NC) of each sensor is directly connected to the corresponding input port of the first control signal expansion module. The output terminal of the first control signal expansion module is connected to the core control unit via an RS485 bus for uploading the collected switch status data. The input terminal of the second control signal expansion module receives control commands issued by the core control unit. The output of the second control signal expansion module is a multi-channel dry contact relay contact (each channel provides a common NO terminal, a normally open NO terminal, and a normally closed NC terminal). The dry contact output of the second control signal expansion module is connected to at least one non-smart device among electric windows, clothes racks, lighting circuits, and HVAC actuators via a control line (preferably RVV2×1.0 or RVV2×1.5 cable in this embodiment). The control signal expansion module provided by this invention provides at least one dry contact interface, which can convert the switching quantity or status signal of ordinary switches and non-smart home appliances into signals that can be recognized by the core control unit. It can be integrated into the smart home control system without replacing the original equipment. The control signal expansion module can be used to integrate it into the smart home control system, reducing the cost of intelligent transformation. At the same time, it can realize unified status monitoring and scene linkage (such as linkage of lights and alarms after door magnetic switch is triggered), realize centralized control and status monitoring, significantly save transformation costs, and facilitate the intelligent upgrading of existing residences.

[0069] In this embodiment, non-intelligent connected devices include non-smart terminal devices, which are connected in parallel using at least control signal extension modules. Compared with the single-module solution, the number of connected non-intelligent connected devices can be increased several times (for example, two 8-channel control signal extension modules can provide 16 channels of control). The parallel architecture supports independent control by region or device type, achieves electrical isolation to avoid signal crosstalk, and has single-point fault redundancy capability - when one control signal extension module fails, the other control signal extension module can still work normally. This design is particularly suitable for complex scenarios such as large-sized residences, villas or commercial buildings.

[0070] The IoT gateway of this invention connects to external smart devices via communication cables. In this embodiment, external smart devices refer to smart home devices that do not support or directly use the PLC-IoT communication protocol, but adopt other communication standards, such as: central air conditioning and fresh air systems using the Modbus RTU protocol; building lighting and shading systems using the KNX protocol; smart sockets using the Zigbee protocol; door locks and detectors using the Z-Wave protocol; smart speakers and network cameras using the Wi-Fi protocol (but not PLC-IoT); and lamps and switches using the Bluetooth Mesh protocol. These devices cannot directly communicate with the core control unit through the power line carrier IoT communication network and must undergo protocol conversion through the IoT gateway. This IoT gateway can provide several physical interfaces, including RS485, RJ45 Ethernet, and wireless interfaces. The RS485 interface connects to devices using the Modbus RTU protocol (such as Daikin central air conditioning controllers) via RVSP2×0.75 shielded twisted-pair cable. The RJ45 Ethernet interface connects to external devices using the TCP / IP protocol (such as smart speakers supporting HTTP API) via CAT6 network cable, or connects to other gateways (such as KNX / IP gateways) via a local area network. The wireless interface has built-in Zigbee, Z-Wave, Bluetooth, and Wi-Fi RF modules for wireless connection to devices using the corresponding protocols. The first communication protocol includes at least one of RS485, Modbus, KNX, and SIP protocols, and the second communication protocol is the PLC-IoT protocol. In this embodiment, the communication cable is preferably a shielded twisted-pair cable, and the IoT gateway connects to external smart devices via this shielded twisted-pair cable, which is an RVSP4×0.5 type. The IoT gateway set up in this invention supports the conversion between communication protocols such as RS485, Modbus, KNX, and SIP and PLC-IoT protocol, enabling non-smart terminal devices using different communication protocols or devices connected through the IoT gateway (such as central air conditioning, underfloor heating, and fresh air systems) to seamlessly connect to the system, truly achieving protocol-independent unified control.

[0071] This invention configures the intelligent central control screen as follows:

[0072] Displays the elevator's real-time operating status and floor information;

[0073] Receive elevator reservation instructions from users and send reservation dispatch commands through the elevator control interface;

[0074] When responding to a visitor's intercom door opening command, the elevator automatically sends a dispatch command to the destination floor through the elevator control interface.

[0075] The signal flow of each module in the smart home control system of this invention is as follows:

[0076] With the core control unit (HC-PLC-H01) as the control core, the intelligent central control screen sends human-machine interaction commands to the host via RJ45 Ethernet; the core control unit forwards the multimodal commands to the local artificial intelligence processing module (AI-HW-EDGE-01) to complete semantic parsing and scene strategy generation, and then sends them back to the core control unit;

[0077] The core control unit is connected to the first control signal expansion module (IO-HW-16R) and the second control signal expansion module (IO-HW-16R) via two independent RS485 interfaces. The first control signal expansion module is used for dry contact acquisition of security sensor signals, and the second control signal expansion module is used for dry contact control output of home devices. At the same time, the core control unit is interconnected with the multi-protocol IoT gateway (GW-HW-05) LAN to realize protocol access of external smart devices.

[0078] The core control unit is connected to an external PLC isolator and a PLC-IoT circuit in the power box. It relies on the power line carrier IoT network to realize communication between smart devices throughout the house. The weak current box completes the overall line aggregation and wiring. The status signals of each module are transmitted back to the core control unit in reverse step by step, and finally synchronized to the smart central control screen for display, forming a complete closed-loop control.

[0079] The intelligent central control screen collects human-machine operation, intercom video, and elevator control operation commands, and sends them to the core control unit via the network;

[0080] The core control unit integrates building video intercom and elevator control interfaces to recognize visitor door opening signals and automatically trigger elevator dispatching.

[0081] The operating status of all devices and systems is transmitted back to the core control unit, and finally summarized and displayed on the intelligent central control screen, forming a complete signal closed loop.

[0082] like Figure 5 As shown, on the other hand, the present invention also provides a control method based on a smart home control system, the control method comprising the following steps:

[0083] The local AI processing module receives multimodal commands from users, parses out the multiple intentions in a single command, and generates scenario-based control strategies.

[0084] The core control unit receives the scenario-based control strategy;

[0085] The core control unit determines whether the multimodal command is associated with building intercom or elevator control functions;

[0086] If so, the control commands are forwarded to the corresponding external system through the building intercom communication interface or elevator control interface, and the status feedback information is received and displayed on the smart central control screen;

[0087] If not, the core control unit controls the corresponding smart home devices or non-smart devices through at least one of the following: PLC-IoT network, control signal extension module, or IoT gateway.

[0088] In this embodiment of the invention, the local artificial intelligence processing module performs natural language processing and intent parsing on the received voice commands entirely locally, without uploading any voice data to the cloud server.

[0089] In practical implementation, the local artificial intelligence processing module of this invention has a built-in lightweight multimodal large model. All data processing is completed locally, without relying on the Internet connection. Even when the Internet is disconnected, it can still generate scenario-based control strategies normally.

[0090] The control method of this invention uses a core control unit to uniformly determine the command attribution, routing intercom, elevator control commands, and internal device control commands separately to avoid signal conflicts or protocol incompatibility issues caused by sharing communication channels. The building intercom communication interface and elevator control interface are physically / logically isolated from the PLC-IoT network, ensuring that an anomaly in one system does not affect the control of other systems.

[0091] The present invention has been described in detail above. The above description is only a preferred embodiment of the present invention and should not be construed as limiting the scope of the present invention. All equivalent changes and modifications made in accordance with the scope of this application should still fall within the scope of the present invention.

Claims

1. A smart home control system, characterized in that: The smart home control system includes a core control unit, a smart central control screen, a local artificial intelligence processing module, a control signal expansion module, and an IoT gateway. The core control unit is communicatively connected to the local artificial intelligence processing module and the IoT gateway, respectively. The core control unit integrates a building intercom communication interface and an elevator control interface. The building intercom communication interface is used to communicate with the building video intercom system, and the elevator control interface is used to communicate with the elevator control system. The elevator control interface is also used to send elevator dispatch commands to the elevator control system and receive elevator operating status. The core control unit communicates with several smart home devices via a power line carrier IoT communication network. The local artificial intelligence processing module is deployed locally and is used to process multimodal user commands and generate collaborative control strategies, and send the strategies to the core control unit; The control signal extension module is communicatively connected to the core control unit; The IoT gateway is used to communicate with external smart devices and to convert between the first communication protocol used by the external smart devices and the second communication protocol used by the core control unit. The intelligent central control screen is communicatively connected to the core control unit, and integrates a building video intercom interface and an elevator control interface.

2. The smart home control system according to claim 1, characterized in that: The smart home control system includes a power distribution box, which contains a PLC-IoT communication circuit and a non-PLC power supply circuit. The PLC-IoT communication circuit is used to connect several smart home devices through a power line carrier IoT communication network and communicate with the core control unit. The non-PLC power supply circuit is used to provide power to the IoT gateway and ordinary electrical equipment.

3. The smart home control system according to claim 1, characterized in that: The smart home control system includes a low-voltage box, which contains a network wiring unit. The low-voltage box is connected to the core control unit via a network cable. The network wiring unit is used to access external network devices and HVAC gateways.

4. The smart home control system according to claim 2, characterized in that: The smart home control system also includes a PLC isolator, which is installed in the power distribution box to electrically isolate the PLC-IoT communication circuit from the non-PLC power circuit.

5. The smart home control system according to claim 1, characterized in that: The control signal expansion module includes a first control signal expansion module and a second control signal expansion module; The first control signal extension module is communicatively connected to the core control unit and is used to acquire the switch signal output by the security sensor through the dry contact interface and convert the switch signal into a signal that can be recognized by the core control unit. The second control signal extension module is communicatively connected to the core control unit and is used to convert the control signals of the core control unit into dry contact signals to control non-intelligent connected devices.

6. The smart home control system according to claim 1, characterized in that: The first communication protocol includes at least one of RS485, Modbus, KNX, and SIP protocols, and the second communication protocol is the PLC-IoT protocol.

7. The smart home control system according to claim 1, characterized in that: The intelligent central control screen is configured as follows: Displays the elevator's real-time operating status and floor information; Receives the user's elevator reservation instruction and sends a reservation dispatch command through the elevator control interface; When responding to a visitor's intercom door opening command, the elevator automatically sends a dispatch command to the destination floor through the elevator control interface.

8. A control method based on the smart home control system according to any one of claims 1-7, characterized in that: The control method includes the following steps: The local AI processing module receives multimodal commands from users, parses out the multiple intentions in a single command, and generates scenario-based control strategies. The core control unit receives the scenario-based control strategy; The core control unit determines whether the multimodal command is associated with building intercom or elevator control functions; If so, the control commands are forwarded to the corresponding external system through the building intercom communication interface or elevator control interface, and the status feedback information is received and displayed on the smart central control screen; If not, the core control unit controls the corresponding smart home devices or non-smart devices through at least one of the following: a PLC-IoT network, a control signal extension module, or an IoT gateway.

9. The control method according to claim 8, characterized in that: The local AI processing module performs natural language processing and intent parsing on the received voice commands entirely locally, without uploading any voice data to the cloud server.

10. The control method according to claim 8, characterized in that: The local AI processing module has a built-in lightweight multimodal large model. All data processing is completed locally, without relying on an internet connection. Even when the network is offline, it can still generate scenario-based control strategies normally.

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