A whole-house smart home linkage system
By integrating a communication module into the smart lock, the lock status can be wirelessly transmitted directly to the smart gateway, solving the problem of low accuracy in dry contact control in existing technologies and achieving more efficient smart home control.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- WONLY SECURITY & PROTECTION TECH CO LTD
- Filing Date
- 2025-07-28
- Publication Date
- 2026-07-14
AI Technical Summary
In existing smart home systems, dry contact control relies on external sensors to detect door lock status, resulting in low control accuracy and a fragmented system structure.
By integrating a communication module into the smart lock, and using the central control module to control the signal interface of the dry contact peripheral interface, the lock's working status can be directly sent to the smart gateway via wireless communication, achieving native sensing and proactive push.
It improves the accuracy and response speed of smart home control, reduces reliance on external sensors, and enhances system stability and real-time performance.
Smart Images
Figure CN224501171U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of smart home technology, specifically to a whole-house smart home linkage system. Background Technology
[0002] In existing smart home systems, dry contact control is commonly used to achieve simple linkage between devices. Specifically, this typically involves installing smart switch modules (such as Zigbee dual-channel relays) with dry contact input functionality within the wall or low-voltage distribution box. These modules have two or more passive input interfaces to receive closing signals from external physical switches, door magnets, infrared motion sensors, and other sensing devices. In this approach, the dry contact input itself does not have data transmission capabilities; instead, it serves as a switching signal path. Its status is determined by the platform through polling or status reporting to check for changes.
[0003] Because the dry contact input in traditional solutions relies on the state changes of external passive devices, it is impossible to directly obtain information on the changes in the working state of the device itself (such as a smart door lock). Therefore, it is necessary to use additional sensing devices such as door magnets, buttons, and switches for indirect control. The system structure is relatively dispersed and the control accuracy is low. Utility Model Content
[0004] This application provides a whole-house smart home linkage system, which improves the control accuracy of whole-house smart home systems.
[0005] The system includes a dry contact peripheral interface, a smart door lock, a central control module, and a smart gateway;
[0006] The dry contact peripheral interface includes at least one signal input interface, which is used to electrically connect with the central control module to receive control signals; the control signals are used to indicate the working status of the door lock; the dry contact peripheral interface integrates a communication module, which is used to send the received door lock working status to the smart gateway via wireless communication.
[0007] The smart door lock is used to control the signal interface of the dry contact peripheral interface through the central control module when the working state changes, so as to send a dry contact signal corresponding to the current state.
[0008] In one optional embodiment, the dry contact peripheral interface includes: a common terminal COM, a first dry contact terminal IN1, a second dry contact terminal IN2, and a third dry contact terminal OUT.
[0009] In one optional implementation, the smart door lock also includes a central control screen; when the user triggers the exit control on the central control screen, the third dry contact terminal OUT closes with the common terminal COM.
[0010] When the smart door lock is opened from the outside, the first dry contact terminal IN1 closes with the common terminal COM;
[0011] When the smart lock is opened through the gateway, the second dry contact terminal IN2 closes with the common terminal COM.
[0012] In one optional implementation, the central control module includes an MCU, which has at least three GPIOs, respectively connected to the first dry contact terminal IN1, the second dry contact terminal IN2, and the third dry contact terminal OUT of the dry contact peripheral interface.
[0013] In one alternative implementation, the dry contact peripheral interface switching drive circuit is composed of an optocoupler or a MOSFET, used to electrically isolate the MCU from the external dry contact terminals.
[0014] In one optional implementation, the smart door lock sends its operating status signal to the central control module via a wired connection. The central control module outputs a low-level or high-level pulse for 0.5 to 1 second to trigger the closure of the terminals of the dry contact peripheral interface.
[0015] In one optional embodiment, the dry contact peripheral interface further includes various LED indicator lights, each of which corresponds to a first dry contact terminal IN1, a second dry contact terminal IN2, and a third dry contact terminal OUT, and is used to indicate that the terminal has entered a pairing or triggering state.
[0016] The technical solution provided in this application may include the following beneficial effects:
[0017] This application includes a dry contact peripheral interface, a smart door lock, a central control module, and a smart gateway. The dry contact peripheral interface includes at least one signal input interface, which is used to electrically connect to the central control module to receive control signals. The control signals are used to indicate the working status of the door lock. The dry contact peripheral interface integrates a communication module, which is used to transmit the received door lock working status to the smart gateway via wireless communication. When the working status changes, the smart door lock uses the central control module to control the signal interface of the dry contact peripheral interface to send a dry contact signal corresponding to the current status. In the above solution, when the smart door lock's working status changes (e.g., opening, arming, disarming), the central control module controls the trigger output of the dry contact signal, and then the communication module of the dry contact peripheral interface reports the status to the smart gateway, realizing platform-level scene linkage control. Compared with the passive detection method of existing technologies that rely on external magnetic sensors, human body sensors, etc., this solution can achieve native perception and active push of the door lock status, resulting in more timely response and more precise control. Attached Figure Description
[0018] To more clearly illustrate the technical solutions in the specific embodiments of this application or the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.
[0019] Figure 1 This is a schematic diagram illustrating the structure of a whole-house smart home linkage system according to an exemplary embodiment.
[0020] Figure 2 This illustration shows a schematic diagram of a dry contact peripheral interface according to an embodiment of this application.
[0021] Figure 3 The flowcharts show the linkage process of smart home systems under different modes. Detailed Implementation
[0022] The technical solutions of this application will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.
[0023] In the description of the embodiments of this application, the term "correspondence" may indicate that there is a direct or indirect correspondence between two things, or that there is an association between two things, or that there is a relationship of instruction and being instructed, configuration and being configured, etc.
[0024] Figure 1 This is a schematic diagram illustrating the structure of a whole-house smart home linkage system according to an exemplary embodiment. For example... Figure 1 As shown, the system includes a dry contact peripheral interface, a smart door lock, a central control module, and a smart gateway;
[0025] The dry contact peripheral interface includes at least one signal input interface, which is used to electrically connect with the central control module to receive control signals; the control signals are used to indicate the working status of the door lock; the dry contact peripheral interface integrates a communication module, which is used to send the received door lock working status to the smart gateway via wireless communication.
[0026] This smart door lock is used to control the signal interface of the dry contact peripheral interface through the central control module when the working state changes, so as to send the dry contact signal corresponding to the current state.
[0027] like Figure 1As shown, the system also includes a router; the router can be a wireless router; the wireless router can communicate with the smart gateway via wireless or wired communication; the wireless router can also communicate with user terminals, so that user terminals can log in to the smart gateway through the wireless router and control the working status of the smart gateway.
[0028] In this embodiment, the central control module (such as an MCU) can output high / low level pulses via GPIO to simulate the closing action of the dry contact; the signal input interface of the dry contact peripheral interface senses this closing state and completes the state acquisition. Therefore, this system uses MCU to directly drive the switch, replacing the traditional mechanical switch, reducing dependence on external sensors, thereby ensuring the controllability and reliability of the signal source, and improving system stability and real-time performance.
[0029] like Figure 1 As shown, the smart lock in this system also includes a central control screen, which is used to control the working status of the smart home system and the smart lock. In this embodiment, the central control screen can be directly connected to the electronic structure of the smart lock; on the other hand, the central control screen can also communicate with a wireless router via wired or wireless means; and since the wireless router can also communicate with the smart home system, the central control screen can control the smart home system terminals through the wireless router.
[0030] Figure 2 This diagram illustrates an interface schematic of a dry contact peripheral interface according to an embodiment of this application. Figure 2 As shown, the dry contact peripheral interface includes: a common terminal COM, a first dry contact terminal IN1, a second dry contact terminal IN2, and a third dry contact terminal OUT.
[0031] Optionally, when the user triggers the exit control on the central control screen, the third dry contact terminal OUT closes with the common terminal COM; when the smart lock is opened from the outside, the first dry contact terminal IN1 closes with the common terminal COM; when the smart lock is opened through the gateway, the second dry contact terminal IN2 closes with the common terminal COM.
[0032] The first dry contact terminal IN1, the second dry contact terminal IN2, and the third dry contact terminal OUT correspond to three different working scenarios. Specifically, when the user triggers the exit control on the central control screen, the third dry contact terminal OUT can close with the common terminal COM. At this time, the dry contact peripheral interface can send the first type of control signal to the central control module to control the smart home to work according to the preset state when the user is out of the house through the smart gateway.
[0033] When the smart door lock is opened from the outside, for example, by controlling the mechanical lock to open via a mechanical key, NFC, password, or facial recognition, the first dry contact terminal IN1 closes with the common terminal COM. At this time, the dry contact peripheral interface can send a second type of control signal to the central control module to control the smart home to work according to the preset state of the user's door opening state through the smart gateway.
[0034] When a user opens the smart door lock through the smart gateway, the second dry contact terminal IN2 closes with the common terminal COM.
[0035] Optionally, the smart door lock sends its operating status signal to the central control module via a wired connection. The central control module outputs a low-level or high-level pulse for 0.5 to 1 second to trigger the closure of the terminals of the dry contact peripheral interface. That is, the common terminal COM is connected to the common terminal (GND), OUT is connected to the door opening signal, IN1 is connected to the home mode signal, and IN2 is connected to the away mode signal.
[0036] The trigger signals for "Home," "Away," and doorbell alerts are all high-level to low-level transitions, maintained at low level for 1 second, and then returning to high level. The door opening signal is high-level to low-level transition, maintained at low level for 1 second or 0.5 seconds. When the IN1 / IN2 dry contacts receive different signals, they will enter the corresponding mode and synchronize with the remote end. When the remote end sends a door opening signal to the dry contact, the OUT of the dry contact will output the door opening trigger signal. The above process can be described as follows: Figure 3 As shown, Figure 3 The flowcharts show the linkage process of smart home systems under different modes.
[0037] Optionally, the central control module includes an MCU with at least three GPIOs, which are respectively connected to the first dry contact terminal IN1, the second dry contact terminal IN2, and the third dry contact terminal OUT of the dry contact peripheral.
[0038] Optionally, in this embodiment, the central control module may be of model HC32L19x, with three pins PC6\PB15\PA10 reserved for wiring of dry contacts IN1\IN2\OUT respectively.
[0039] Optionally, the dry contact peripheral interface switching drive circuit is composed of an optocoupler or a MOSFET, used to electrically isolate the MCU from the external dry contact terminals. In this case, the optocoupler or MOSFET isolates the MCU logic level from the external contact circuit, which can avoid common ground interference.
[0040] Optionally, the communication module supports the Zigbee 3.0 protocol.
[0041] In this embodiment, to connect the device to the smart gateway, first connect the device to a 5V 1A power supply and wait for 1 minute. Configure the network in the corresponding APP of the smart gateway. Select "Add Device," search for the device (e.g., Aqara door and window sensor) in the search bar, select the corresponding gateway, and the gateway will prompt you to add the device. At this time, press and hold the IN1 button for 5 seconds until LED1 flashes three times, then release the button and wait for the device to be added successfully. After both IN1 and IN2 are added, search for "Aqara dual-channel controller" in the search bar, select the corresponding gateway, and the gateway will prompt you to add the device. At this time, press and hold the OUT button for 5 seconds until LED3 flashes three times, then release the button and wait for the device to be added successfully. (Repeat if the addition fails). After the device is added, you can create the relevant automation or scene.
[0042] The HC32L19x central control box has three pins (PC6, PB15, PA10) designated for wiring the dry contacts IN1, IN2, and OUT, respectively. Therefore, these three pins can each output different control signals. Specifically, this can include the following scenarios:
[0043] a. Upon receiving the instruction from the receiving screen, enter away mode; PB15 sends an "away signal" to IN2.
[0044] b. The door opens from the outside, entering home mode. PC6 sends a "home signal" to IN1.
[0045] c. Smart home door opening: PA10 receives the "open door" signal from the OUT terminal.
[0046] At this point, the smart lock connects to the PLC via dry contacts to achieve smart home integration, enabling personalized automatic arming when leaving home and disarming upon returning home. Details are as follows:
[0047] a. Opening the door from the outside (using facial recognition, password, or remote sensing) can trigger the smart home platform to link the homecoming scene, eliminating the need to click "home" to disarm after entering the house.
[0048] b. Tap "Leave Home Arming" on the robot door's back screen. The robot door will unlock and open, and the smart home platform will be activated to execute the "Leave Home" scenario.
[0049] c. Click "Remotely open door" on the smart home platform app. After receiving the signal, the door will open.
[0050] d. When the doorbell is rang from outside, the smart home app can receive the execution log.
[0051] The smart lock, after connecting to a PLC via dry contacts, achieves integration with smart home systems, enabling personalized automatic arming when leaving home and disarming upon returning. Because this application features the ability to automatically adjust home security settings based on user behavior, automatically arming when leaving home and disarming upon returning, it offers the following technical advantages:
[0052] Automatic arming when leaving home and automatic disarming when returning home rely on the automation features of a smart home system. Users can remotely control their home security system using devices such as smartphones, tablets, or computers. When a user leaves home, the system automatically arms; when the user returns home, the system automatically disarms.
[0053] These functions are typically used in conjunction with devices such as smart locks, door and window sensors, and motion sensors. When these devices detect that a user has left or returned, they trigger corresponding arming or disarming operations. This intelligent response method makes the security system more accurate and efficient.
[0054] Automatic arming when leaving home and automatic disarming when returning home provide users with great convenience. Users do not need to manually operate the security system; they can easily control their home security through a mobile application or voice assistant.
[0055] These two features enhance home security. When armed, any unusual activity will be detected by the system and the user will be notified promptly. When disarmed, users can freely enter and exit any area of the home without being bothered by false alarms.
[0056] When armed, the system may turn off unnecessary appliances and lights to save energy. When disarmed, the system will automatically turn on lights and appliances according to the user's habits to provide a comfortable living environment.
[0057] In summary, when the switch module is turned on in this application, the second selection terminal of the second relay is connected to the second normally open contact, and the second selection terminal of the second relay is connected to the second power supply terminal of the first relay. The first power supply terminal of the first relay is connected to the first voltage. Therefore, as long as the limit switch is turned on, the first power supply terminal, the second power supply terminal, the second selection terminal, the second normally open contact, the limit switch, and GND form a circuit, thereby energizing the coil of the first relay and stopping the power supply to the target device to achieve an emergency stop. If power needs to be restored, the switch module only needs to be turned off to directly disconnect the above circuit, thereby avoiding an infinite power outage loop after the device is stopped by the limit switch.
[0058] Other embodiments of this application will readily occur to those skilled in the art upon consideration of the specification and practice of the utility model disclosed herein. This application is intended to cover any variations, uses, or adaptations of this application that follow the general principles of this application and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of this application are indicated by the following claims.
[0059] It should be understood that this application is not limited to the precise structure described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope.
Claims
1. A whole-house smart home linkage system, characterized in that, The system includes a dry contact peripheral interface, a smart door lock, a central control module, and a smart gateway; The dry contact peripheral interface includes at least one signal input interface, which is used to electrically connect to the central control module to receive control signals; the control signals are used to indicate the working status of the door lock; the dry contact peripheral interface integrates a communication module, which is used to send the received door lock working status to the smart gateway via wireless communication. The smart door lock is used to control the signal interface of the dry contact peripheral interface through the central control module when the working state changes, so as to send a dry contact signal corresponding to the current state.
2. The system according to claim 1, characterized in that, The dry contact peripheral interface includes: a common terminal COM, a first dry contact terminal IN1, a second dry contact terminal IN2, and a third dry contact terminal OUT.
3. The system according to claim 2, characterized in that, The smart door lock also has a central control screen; when the user triggers the exit control on the central control screen, the third dry contact terminal OUT and the common terminal COM are closed; When the smart door lock is opened from the outside, the first dry contact terminal IN1 closes with the common terminal COM; When the smart lock is opened through the gateway, the second dry contact terminal IN2 closes with the common terminal COM.
4. The system according to claim 3, characterized in that, The central control module includes an MCU, which has at least three GPIOs, respectively connected to the first dry contact terminal IN1, the second dry contact terminal IN2, and the third dry contact terminal OUT of the dry contact peripheral interface.
5. The system according to claim 2, characterized in that, The dry contact peripheral interface switching drive circuit is composed of optocouplers or MOSFETs and is used to electrically isolate the MCU from the external dry contact terminals.
6. The system according to any one of claims 1 to 5, characterized in that, The communication module supports the Zigbee 3.0 protocol.
7. The system according to any one of claims 1 to 5, characterized in that, The smart door lock sends its operating status signal to the central control module via a wired connection. The central control module outputs a low-level or high-level pulse for 0.5 to 1 second to trigger the closure of the terminals of the dry contact peripheral interface.
8. The system according to any one of claims 1 to 5, characterized in that, The dry contact peripheral interface also includes various LED indicator lights, each of which corresponds to the first dry contact terminal IN1, the second dry contact terminal IN2, and the third dry contact terminal OUT, and is used to indicate that the terminal has entered the pairing or triggering state.