Villa elevator multi-mode emergency communication and redundancy positioning device

Abstract

The invention discloses a villa elevator multi-mode emergency communication and redundancy positioning device which comprises a multi-mode communication module used for achieving multi-mode wireless communication; the redundancy positioning module is used for fusing the multi-source positioning data to obtain the accurate position of the elevator; the environment sensing module is used for detecting the elevator running state and personnel existence information; the central control unit is electrically connected with the multi-mode communication module, the redundancy positioning module and the environment sensing module and is used for processing data and controlling the modules to work cooperatively; and the power supply management module supplies power to the modules and comprises a main power supply and at least two standby power supplies. According to the device, through a closed-loop cooperation mechanism of sensing, decision making, communication, positioning and interaction, full-process response of a villa elevator emergency scene is achieved.

Description

Technical Field

[0001] The present invention relates to the field of elevator emergency positioning and communication, and in particular to a multi-modal emergency communication and redundant positioning device for a villa elevator. Background Art

[0002] With the popularity of villa elevators, the reliability of their safety and emergency systems has become the core of ensuring the safety of elevator passengers. However, the existing villa elevator emergency systems have significant technical limitations. Specifically, (1) Existing systems mostly rely on a single GSM module or limited cellular network for emergency communication, while villas are often located in suburban areas or complex building environments (such as basements, reinforced concrete structure shafts), which are prone to signal blind spots. When the cellular signal is interrupted, the alarm information cannot be transmitted, resulting in delayed response to trapped accidents. The fundamental reason is that multi-path communication redundancy has not been designed for the signal shielding characteristics of villa scenes, and relying solely on a single standard network is difficult to cover complex environments; (2) Traditional elevator positioning mostly uses GPS single positioning or shaft travel switch counting. The former has severe signal attenuation indoors (elevator shafts), and the positioning error can reach 10-30 meters; the latter is prone to cumulative errors due to mechanical wear and tear, and cannot meet the precise floor positioning requirements during rescue. Villa elevators have few floors (usually 2-5 floors), but the spatial structure is complex (including duplexes and staggered floors). Existing technologies are difficult to achieve sub-meter positioning, which increases the difficulty of rescue. In summary, the existing technology is difficult to adapt to the complex environment and safety requirements of villa elevators due to problems such as single communication mode, insufficient positioning accuracy, low power redundancy, lack of environmental perception and weak interaction capabilities.

[0003] For example, CN114791286A in the prior art provides an indoor positioning method, system and computer-readable storage medium, which realizes general indoor navigation by integrating radio frequency beacons, inertial navigation and terrain restrictions. However, its core goal is to meet the daily positioning needs of scenes such as shopping malls and garages, and there are significant limitations in villa elevator emergency scenarios.

[0004] Existing technologies achieve fusion positioning through radio frequency beacons, inertial navigation, and terrain-constrained particle filtering. However, these technologies rely on densely deployed beacons, and the narrow space in villa elevator shafts makes it impossible to meet the required beacon deployment distances. Furthermore, inertial navigation relies on pedestrian gait detection, but elevator cars are fixed and lack pedestrian gait characteristics, resulting in significant cumulative positioning errors and the inability to distinguish specific floors. Therefore, an emergency device integrating multimodal communication and redundant positioning is urgently needed to improve the reliability and efficiency of emergency response. Summary of the Invention

[0005] The present invention aims to provide a multimodal emergency communication and redundant positioning device for a villa elevator, which improves the reliability and efficiency of emergency response by integrating multimodal communication and redundant positioning emergency devices.

[0006] A multimodal emergency communication and redundant positioning device for a villa elevator comprises: a multimodal communication module for implementing wireless communications of various formats; a redundant positioning module for fusing multi-source positioning data to obtain the precise position of the elevator; an environmental perception module for detecting the operating status of the elevator and information on the presence of personnel; a central control unit electrically connected to the multimodal communication module, the redundant positioning module, and the environmental perception module, for processing data and controlling the coordinated operation of the modules; a power management module for supplying power to the modules, including a main power supply and at least two backup power supplies; and a human-computer interaction unit electrically connected to the central control unit for enabling information exchange between trapped personnel and the outside world.

[0007] Preferably, the multimodal communication module includes: a satellite communication unit, a cellular communication unit and a short-range communication unit.

[0008] Preferably, the satellite communication unit supports dual-mode communication of the Tiantong satellite system and the Beidou-3 short message system; the cellular communication unit includes a 4G communication module and a 5G communication module; and the short-range communication unit includes a LoRa module and a Bluetooth Mesh module.

[0009] Preferably, the multimodal communication module also includes a communication switching circuit, and the central control unit has a built-in communication priority algorithm. When the signal strength of the main communication link is ≤-110dBm, it automatically switches to the secondary priority communication mode. The priority order is: satellite communication>5G>4G>LoRa>Bluetooth Mesh.

[0010] Preferably, the redundant positioning module includes: a satellite positioning unit, an inertial navigation unit, and a base station positioning unit.

[0011] Preferably, the central control unit has a built-in Kalman filter algorithm to fuse the above positioning data, and the weight distribution is: when the signal is good, satellite positioning 0.6 / inertial navigation 0.3 / base station positioning 0.1, or when the indoor signal is weak, satellite positioning 0.3 / inertial navigation 0.6 / base station positioning 0.1.

[0012] Preferably, the environmental perception module includes: an air pressure sensor for detecting the static state of the car, and an air pressure change rate ≤0.1Pa / s is judged as static); a three-axis accelerometer for detecting abnormal movement; and an infrared human body detector for identifying the presence of people in the car.

[0013] Preferably, the power management module includes: a main power supply, a supercapacitor group, and a lithium battery group; the power management module has built-in switching logic. When the main power supply is interrupted, the supercapacitor has priority in power supply and automatically switches to the lithium battery group after 5 seconds.

[0014] Preferably, the human-computer interaction unit includes a touch screen, a voice module, an emergency lighting unit Working principle and beneficial effects of the present invention: This device realizes the full-process response to villa elevator emergency scenarios through a closed-loop collaborative mechanism of perception, decision-making, communication, positioning, and interaction.

[0015] First, the environmental perception module collects multi-dimensional data in real time: an air pressure sensor monitors whether the car is stationary, excluding normal operation; a three-axis accelerometer detects abnormal movement such as falling or sudden stops; and an infrared detector confirms whether there are people inside the car. The central control unit integrates this data through the fault diagnosis module. When the conditions of a stationary car, the presence of people, and an abnormal floor stop are met, it automatically determines that a person is trapped and triggers an emergency response.

[0016] After the central control unit initiates an emergency response, the multimodal communication module immediately checks the signal strength of each communication link, prioritizing satellite communication (Tiantong and Beidou dual-mode) or 5G / 4G cellular networks to transmit alarm information (including positioning data and personnel status). If the signal strength is ≤-110dBm (weak signal), the communication switching circuit automatically switches to LoRa (long-range) or Bluetooth Mesh (short-range networking) to ensure uninterrupted alarm information. Communication data is encapsulated using the UDP protocol (packet header + JSON entity + CRC checksum), complying with the DB64 / T992.4-2014 standard to ensure data integrity.

[0017] The redundant positioning modules synchronously collect multi-source data. In outdoor scenarios, the satellite positioning unit provides basic positioning. After entering the elevator shaft (indoors), the satellite signal attenuates, and the inertial navigation unit infers the motion trajectory through acceleration and angular velocity data, combined with base station positioning to assist in correction. The central control unit dynamically adjusts the weight through the Kalman filter algorithm (for example, increasing the inertial navigation weight to 0.6 when indoors), and ultimately outputs a positioning result with an accuracy of ≤0.5m, accurate to the specific floor and car position.

[0018] The power management module monitors the main power status in real time. If the main power is interrupted (such as an elevator power outage), the supercapacitor bank seamlessly takes over within 10ms, ensuring uninterrupted communication and positioning modules. After 5 seconds, it automatically switches to the lithium battery pack, providing 72 hours of standby power (power consumption ≤ 0.5W) or 5 hours of continuous talk time (power consumption ≤ 4W), meeting long-term emergency needs. In low-power mode, the touchscreen backlight is turned off, reducing standby current to ≤ 50μA, further extending battery life.

[0019] The human-machine interaction unit provides two-way communication for trapped personnel: a touchscreen displays rescue progress, elevator location, and emergency contact information; a voice module supports two-way communication and local voice commands (such as "Help" and "Report Location"); and emergency lighting automatically activates after a power outage (brightness ≥ 200lm), alleviating tension for trapped personnel. External rescuers can use this unit to monitor the status of the elevator cabin, enabling precise rescue efforts.

[0020] Through multi-module collaborative innovation, this application breaks through the single-function limitations of the existing villa elevator emergency system and forms a systematic solution of perception, decision-making, communication, positioning, and interaction. Its creativity lies in the deep integration of multimodal communication, redundant positioning, intelligent perception and dual power supply redundancy, rather than simple superposition, which significantly improves the reliability and accuracy of elevator emergency response in villa scenarios and has outstanding practical value. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is the system structure diagram; Figure 2 This is the circuit diagram of the communication module; Figure 3 This is the flow chart of the positioning data fusion algorithm; Figure 4 This is a schematic diagram of the device installation. DETAILED DESCRIPTION

[0022] The following is further described in detail through specific implementation methods: (1) Communication protocol and data format Transport layer protocol: UDP protocol, port range 8800-8899, data packet structure: header (4-byte MagicCode 0xAA55AA55) + data entity (JSON format) + CRC-16 checksum + end mark (0x0D0A).

[0023] Data coding: Complying with the DB64 / T992.4-2014 standard, elevator status data uses binary coding (e.g. fault code: 0x01 indicates door lock abnormality, 0x02 indicates overspeed).

[0024] Clock synchronization: Synchronize with the platform time through the NTP protocol (port 123), with an error of ≤ 1 second.

[0025] (2) Positioning data fusion algorithm Kalman filter: Integrates satellite positioning (outdoor), inertial navigation (indoor trajectory) and base station positioning data, with weights based on signal strength (satellite: 0.6, inertial: 0.3, base station: 0.1).

[0026] Error compensation: The sliding window averaging method is used to eliminate the accumulated error of inertial navigation, and the window size is set to 10 seconds.

[0027] (3) Power switching logic Active / standby switching: After a main power outage, the supercapacitor takes priority (switching time ≤ 10ms), with the lithium battery taking over after 5 seconds to ensure uninterrupted communication. Power consumption management: In low-power mode, non-core modules (such as the touchscreen backlight) are turned off, and the standby current is ≤ 50μA.

[0028] (4) Installation and testing Installation location: The device body is installed in the control cabinet on the top of the car, and the antenna module (satellite / cellular / LoRa) is externally placed on the top of the shaft to ensure that the signal is unobstructed.

[0029] Field testing: 72 hours of continuous stress testing in accordance with GB / T24475-2023, including power outage simulation, multi-path communication switching (failure rate ≤ 0.1%), and positioning accuracy verification (≤ 1.5m indoors, ≤ 0.5m outdoors).

[0030] Example Experimental Data Refinement (Simulated Data Example) (1) Positioning accuracy test report Test standard: GB / T39398-2023 "General Technical Specifications for Emergency Positioning Terminals" Test equipment: Satellite signal simulator (SpirentGSS7000) Indoor positioning test site (50m×20m, reinforced concrete structure) High-precision reference base station (Trimble R10, positioning accuracy ±1cm) Test scenarios and results are shown in Table 1: Table 1

[0031] Data Analysis: The fusion algorithm improves accuracy by 40-60% compared to a single positioning method, meeting indoor positioning requirements of ≤1.5m (GB / T39398-2023 Class B). The accumulated error of inertial navigation is suppressed by the sliding window averaging method (the error decay rate within the 10-second window is ≥70%). (2) Multimodal communication switching test Test standard: YD / T2583.18-2023 "Technical Requirements for Cellular IoT Equipment" Test scenario: Signal strength gradient test (gradually shielding the signal in the elevator shaft) Communication priority: Satellite > 5G > 4G > LoRa > Bluetooth Mesh The test results are shown in Table 2: Table 2

[0032] in conclusion: Communication switching success rate ≥98% (industry requirement ≥95%) When all signals are interrupted, the Bluetooth Mesh network can maintain the minimum alarm data transmission (0.5kb / s) (3) Power system endurance test Test conditions: After the main power is disconnected, the super capacitor + lithium battery jointly supplies power Equipment load: Communication module (5G+satellite standby), positioning module (inertial navigation), and environmental perception module are all enabled, see Table 3 Table 3

[0033] Key indicator verification: Supercapacitor seamless switching time ≤ 10ms (measured 8.3ms) Lithium battery life deviation ≤ 5% (GB31241-2022 requirement) (4) Environmental perception module verification Test method: Simulate a scene where someone is trapped in an elevator (the elevator is stationary and infrared personnel are present) Comparison of manual records and system automatic alarm records, see Table 4 Table 4

[0034] False positive analysis: False alarm 1: The infrared sensor was triggered by the airflow in the well (temperature differential verification will be added later) Missed report 1 time: The person is in the sensor blind spot (solved after optimizing the installation angle) Experimental data summary Positioning accuracy: Fusion algorithm achieves 0.6-meter indoor positioning accuracy (industry-leading level) Communication reliability: Multi-mode switching guarantees a communication success rate of more than 98% Power life: 72 hours standby meets GB / T24475-2023 emergency standard Intelligent perception: 97% accuracy rate is significantly better than traditional elevators (industry average 85%).

[0035] (5) Exemplary embodiments: When an elevator entraps someone: The air pressure sensor detects the stationary state of the car, and the accelerometer eliminates free fall The infrared sensor automatically activates the emergency system after confirming the presence of people The central processing unit gives priority to the communication method with the strongest signal to transmit alarm information The positioning module integrates satellite positioning (outdoor) + inertial navigation (indoor movement trajectory) + base station positioning data The power module automatically switches to the backup power supply to maintain equipment operation The touch screen displays real-time rescue progress and supports two-way voice communication Reference standards and certifications Communication standard: YD / T2583.18-2023 "Technical Requirements for Cellular Internet of Things Equipment" Positioning accuracy: GB / T39398-2023 "General Technical Specifications for Emergency Positioning Terminals" Power safety: GB31241-2022 "Safety requirements for lithium-ion batteries for portable electronic products" Explosion-proof certification: IECEx / ATEX certified (suitable for special environments).

[0036] The above is only an embodiment of the present invention, and the common knowledge such as the specific technical solutions and / or characteristics in the solution are not described in detail here. It should be pointed out that for those skilled in the art, without departing from the technical solution of the present invention, several variations and improvements can be made, which should also be regarded as the scope of protection of the present invention, and these will not affect the effect of the implementation of the present invention and the practicality of the patent. The scope of protection required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the description can be used to interpret the content of the claims.

Claims

1. A multi-modal emergency communication and redundant positioning device for a villa elevator, comprising: Multimodal communication module, used to realize wireless communication of various standards; Redundant positioning module, used to fuse multi-source positioning data to obtain the precise position of the elevator; Environmental perception module, used to detect elevator operation status and personnel presence information; A central control unit is electrically connected to the multimodal communication module, the redundant positioning module, and the environmental perception module, and is used to process data and control the coordinated operation of each module; A power management module provides power to the above modules, including a main power supply and at least two backup power supplies; The human-computer interaction unit is electrically connected to the central control unit and is used to realize information interaction between the trapped persons and the outside world.

2. The multi-modal emergency communication and redundant positioning device for a villa elevator according to claim 1 is characterized in that: The multimodal communication module includes: a satellite communication unit, a cellular communication unit and a short-range communication unit.

3. The multi-modal emergency communication and redundant positioning device for a villa elevator according to claim 2 is characterized in that: The satellite communication unit supports dual-mode communication of the Tiantong satellite system and the Beidou-3 short message; the cellular communication unit includes a 4G communication module and a 5G communication module; the short-range communication unit includes a LoRa module and a Bluetooth Mesh module.

4. The multi-modal emergency communication and redundant positioning device for a villa elevator according to claim 3 is characterized in that: The multimodal communication module also includes a communication switching circuit. The central control unit has a built-in communication priority algorithm. When the signal strength of the main communication link is ≤-110dBm, it automatically switches to the secondary priority communication mode. The priority order is: satellite communication>5G>4G>LoRa>Bluetooth Mesh.

5. The multi-modal emergency communication and redundant positioning device for a villa elevator according to claim 4 is characterized in that: The redundant positioning module includes: a satellite positioning unit, an inertial navigation unit, and a base station positioning unit.

6. The multi-modal emergency communication and redundant positioning device for a villa elevator according to claim 5, characterized in that: The central control unit has a built-in Kalman filter algorithm to fuse the above positioning data, and the weight distribution is: when the signal is good, satellite positioning 0.6 / inertial navigation 0.3 / base station positioning 0.1, or when the indoor signal is weak, satellite positioning 0.3 / inertial navigation 0.6 / base station positioning 0.

1.

7. The multi-modal emergency communication and redundant positioning device for a villa elevator according to claim 6, characterized in that: The environmental perception module includes: an air pressure sensor for detecting the static state of the car, and an air pressure change rate of ≤0.1Pa / s is judged as static); a three-axis accelerometer for detecting abnormal movement; and an infrared human body detector for identifying the presence of people in the car.

8. The multi-modal emergency communication and redundant positioning device for a villa elevator according to claim 7, characterized in that: The power management module includes: a main power supply, a supercapacitor group, and a lithium battery group; the power management module has built-in switching logic. When the main power supply is interrupted, the supercapacitor gives priority to power supply and automatically switches to the lithium battery group after 5 seconds.

9. The multi-modal emergency communication and redundant positioning device for a villa elevator according to claim 8, characterized in that: The human-computer interaction unit includes a touch screen, a voice module, and an emergency lighting unit.

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