Intelligent help calling system and method for people trapped in elevator based on 5G communication

Abstract

The invention provides an elevator trapped person intelligent call-for-help system and method based on 5G communication, and relates to the technical field of elevator safety, the system is characterized in that a call-for-help terminal device is triggered by a trapped person through a physical key or voice, and after the call-for-help terminal device is triggered, call-for-help information is uploaded to a call-for-help emergency management center through a 5G network in a data packet mode; wherein the help calling information carries structured elevator basic information; after receiving the call-for-help information, the call-for-help emergency management center inquires the idle state of the seat customer service and distributes the call-for-help information to the idle seat customer service; the seat customer service calls back to the help-calling terminal device through the help-calling emergency management center so as to confirm the trapped condition to the trapped person and pacify the trapped person; and according to the elevator basic information in the help calling information, corresponding departments in the emergency rescue terminal are contacted to carry out emergency processing. According to the scheme, low-delay, high-reliability, full-coverage and strong-linkage elevator people trapping event emergency response can be achieved.

Description

Technical Field

[0001] This invention relates to the field of elevator safety technology, and in particular to an intelligent emergency call system and method for people trapped in elevators based on 5G communication. Background Technology

[0002] With the construction of modern cities, elevators are becoming increasingly prevalent in people's daily lives and work. However, as the number of elevators increases, so does the number of elevator entrapment incidents. When elevator malfunctions occur, it is necessary to take proactive remedial and emergency measures to reduce the damage and avoid unnecessary casualties.

[0003] Currently, elevators are generally equipped with a four-way communication device, which is a wired intercom system between the car, machine room, monitoring room, and maintenance unit, used to achieve communication in emergency situations such as entrapment. However, this traditional solution has the following significant drawbacks: (1) It relies on wired lines, resulting in high maintenance costs. Especially in old elevators or old communities, the four-way communication system often fails due to aging lines and complex wiring, and the repair costs are high; (2) Poor communication reliability: When the property duty room is unattended, or the telephone line or line fails, trapped people cannot effectively call for help; (3) Incomplete user coverage: For children, the elderly, or people with mobility impairments who do not have smartphones, their self-rescue ability is extremely weak when they cannot reach physical buttons or lack communication tools; (4) Delayed response mechanism: Existing systems mostly adopt the "caller dialing" mode. If the first call is not connected, there is a lack of automatic retry, multi-level linkage, and priority scheduling mechanisms, which leads to a delay in rescue. Summary of the Invention

[0004] In view of this, and to address the above shortcomings, it is necessary to propose an intelligent emergency call system and method for elevator entrapment based on 5G communication, in order to solve at least one of the aforementioned technical problems.

[0005] This invention provides an intelligent emergency call system for elevator entrapment based on 5G communication. The system includes: an emergency call terminal device, an emergency call management center, and an emergency rescue terminal. The emergency call terminal device is installed inside the elevator car, and the emergency call management center is deployed on a cloud server or a local server, with several customer service representatives monitoring it around the clock.

[0006] The distress call terminal device is triggered by the trapped person through a physical button or voice, and after being triggered, it uploads the distress call information to the distress call emergency management center in the form of data packets via the 5G network; wherein, the distress call information carries structured elevator basic information;

[0007] After receiving the distress call, the emergency management center checks the availability of customer service agents and assigns the distress call to an available customer service agent.

[0008] The customer service representatives will call back the emergency call terminal through the emergency call management center to confirm the trapped person's situation and reassure them; and, based on the elevator basic information in the emergency call information, contact the relevant department in the emergency rescue terminal for emergency handling.

[0009] Preferably, the emergency call terminal device includes: an alarm physical button, a main control module, and a 5G communication module;

[0010] When a trapped person triggers the alarm physical button, the alarm physical button inputs a trigger signal to the main control module through the GPIO interface;

[0011] When the main control module receives a trigger signal, it sends the distress call information to the emergency management center via the 5G communication module using HTTP or MQTT protocol.

[0012] Preferably, the distress call terminal device further includes: a first microphone and a voice recognition module;

[0013] The first microphone is used to collect the first voice information of the trapped person and send the collected first voice information to the voice recognition module; wherein, the first voice information is the relevant distress call information issued by the trapped person;

[0014] The speech recognition module recognizes the received first speech information and sends the speech recognition result to the main control module via a serial port;

[0015] After receiving the voice recognition result, the main control module sends the distress call information to the emergency management center via the 5G communication module using HTTP or MQTT protocol.

[0016] Preferably, the distress call terminal device further includes: an audio codec, a noise reduction module, and a second microphone;

[0017] The second microphone is used to collect the second voice information of the trapped person and send the second voice information to the noise reduction module; wherein, the second voice information is the call information between the trapped person and the customer service representative.

[0018] The noise reduction module is used to perform noise reduction processing on the second voice information and send the processed first audio signal to the audio codec.

[0019] The audio codec is used to convert the analog first audio signal into first digital audio information, and send the first digital audio information to the emergency management center via the 5G communication module using HTTP or MQTT protocol.

[0020] Preferably, the emergency call terminal device further includes: a multiplexer, a power amplifier module, and a speaker;

[0021] The main control module is used to send preset reassuring voice information to the multiplexer via PDM audio signals;

[0022] The multiplexer is used to switch to the corresponding channel to receive the PDM audio signal and send it to the power amplifier module;

[0023] The power amplifier module is used to amplify the PDM audio signal and drive the speaker to play the reassuring voice message corresponding to the PDM audio signal in order to comfort the trapped personnel.

[0024] Preferably, after the customer service representative calls back the emergency call terminal device through the emergency call management center, the third voice information issued by the customer service representative is sent to the audio codec through the 5G communication module;

[0025] The audio codec is used to convert digital third voice information into analog third voice signal, and send the third analog voice signal to the multiplexer;

[0026] The multiplexer is used to switch to the corresponding channel to receive the third analog voice signal and send it to the power amplifier module;

[0027] The power amplifier module is used to amplify the third analog voice signal and drive the speaker to play the voice information corresponding to the third analog voice signal.

[0028] Preferably, the power amplifier module is also used to provide echo feedback to the speaker output and send the feedback information to the noise reduction module;

[0029] The noise reduction module is also used to combine the echo feedback to perform echo suppression, and send the echo-suppressed sound signal to the audio codec for processing to achieve echo suppression.

[0030] Preferably, the elevator basic information includes at least: elevator number, geographical location, property management company, maintenance company, community grid worker, and current time;

[0031] When the emergency call management center finds that all customer service agents are busy, it will continuously highlight and flash a reminder on the customer service interface, and support customer service agents to dynamically interrupt low-priority calls based on event priority, and prioritize handling entrapment incidents.

[0032] If the customer service representative and the emergency call terminal do not communicate effectively within a preset time, the emergency call terminal will sequentially dial the phone numbers reserved by the property management, maintenance company, and community grid based on the elevator's basic information, until someone responds.

[0033] In a second aspect, the present invention provides an intelligent emergency call method for elevator entrapment based on 5G communication, wherein the emergency call method is implemented based on the intelligent emergency call system for elevator entrapment based on 5G communication as described in any of the first aspects; the method includes:

[0034] When an elevator entrapment incident occurs, the trapped person can call for help by pressing the physical button on the emergency call terminal or by using voice activation.

[0035] After the emergency call terminal device is triggered, the emergency call information is uploaded to the emergency management center in the form of data packets via the 5G network. The emergency call information carries structured basic elevator information.

[0036] The emergency call management center receives the distress call information, checks the availability of customer service agents, and assigns the distress call information to available customer service agents.

[0037] After receiving the assigned distress call information, the customer service representative uses the distress call emergency management center to call back the distress call terminal device to confirm the trapped person's situation and reassure them.

[0038] After confirming the situation of the trapped person, the customer service representative will contact the relevant department in the emergency rescue terminal for emergency handling based on the basic elevator information in the distress call.

[0039] Preferably, the method further includes:

[0040] If the emergency management center finds that all customer service representatives are busy, the message will be continuously highlighted and flashed on the customer service interface.

[0041] And / or,

[0042] If the emergency management center finds that all customer service representatives are busy, it will check the call event priority of each representative and interrupt the call of a representative with a lower priority than the current entrapment event. The current distress call information will then be assigned to the interrupted representative for priority processing.

[0043] And / or,

[0044] If the customer service representative and the emergency call terminal do not communicate effectively within a preset time, the emergency call terminal will be used to dial the pre-registered phone numbers of the property management, maintenance company, community grid, and fire department based on the elevator's basic information, until someone responds.

[0045] As described above, the elevator entrapment intelligent emergency call system and method based on 5G communication provided in this embodiment of the invention includes an emergency call terminal device, an emergency call management center, and an emergency rescue terminal. The emergency call terminal device is installed inside the elevator car, and the emergency call management center is deployed on a cloud server or local server, monitored 24 / 7 by several customer service representatives. When an elevator entrapment occurs, the trapped person calls for help via a physical button or voice trigger on the emergency call terminal device. After the emergency call terminal device is triggered, it uploads the emergency call information, carrying structured elevator basic information, to the emergency call management center in the form of data packets via the 5G network. Upon receiving the emergency call information, the emergency call management center checks the availability of customer service representatives and assigns the emergency call information to an available representative. After receiving the assigned emergency call information, the customer service representative calls back to the emergency call terminal device through the emergency call management center to confirm the entrapment situation with the trapped person and reassure them. After confirming the situation of the trapped person, the customer service representative further contacts the relevant department in the emergency rescue system based on the basic elevator information in the distress call. This demonstrates that this solution pioneers a data-first + passive callback model. It first reports key information through a highly reliable 5G data channel, and then the center proactively calls back to establish a call. This mechanism avoids distress call failures due to busy lines or no answer, greatly improving the call connection rate and timeliness, and offering higher communication reliability, thereby effectively improving the efficiency and success rate of rescue operations for elevator entrapment incidents. Attached Figure Description

[0046] Figure 1 This is a schematic diagram of an intelligent emergency call system for trapped elevators based on 5G communication, provided as an embodiment of the present invention.

[0047] Figure 2 This is a schematic diagram of the hardware structure of a distress call terminal device provided in an embodiment of the present invention.

[0048] Figure 3 A flowchart of an intelligent emergency call method for people trapped in elevators based on 5G communication, provided as an embodiment of the present invention.

[0049] In the diagram: 10 Emergency call terminal device, 20 Emergency call emergency management center, 21 Alarm physical button, 22 Main control module, 23 5G communication module, 24 First microphone, 25 Voice recognition module, 26 Audio codec, 27 Noise reduction module, 28 Second microphone, 29 Multiplexer, 210 Power amplifier module and speaker, 211 Emergency rescue terminal, 30. Detailed Implementation

[0050] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0051] like Figure 1 As shown, the present invention provides an intelligent emergency call system for elevator entrapment based on 5G communication. The system includes: an emergency call terminal device 10, an emergency call management center 20, and an emergency rescue terminal 30. The emergency call terminal device 10 is installed inside the elevator car, and the emergency call management center 20 is deployed on a cloud server or a local server and is monitored by several customer service representatives on duty around the clock.

[0052] The distress call terminal device 10 is triggered by the trapped person through a physical button or voice, and after being triggered, it uploads the distress call information to the distress call emergency management center 20 in the form of data packets via the 5G network; wherein, the distress call information carries structured elevator basic information;

[0053] After receiving the distress call information, the emergency management center 20 checks the availability of the customer service agents and assigns the distress call information to an available customer service agent.

[0054] The customer service representative can call back the emergency call terminal device 10 through the emergency call management center 20 to confirm the trapped person's situation and reassure them; and, based on the elevator basic information in the emergency call information, contact the corresponding department in the emergency rescue terminal 30 for emergency handling.

[0055] In this embodiment, when an elevator entrapment incident occurs, the trapped person calls for help via either a physical button on the emergency call terminal device 10 or a voice call. After the emergency call terminal device 10 is triggered, it uploads the distress call information, carrying structured elevator basic information, to the emergency management center 20 via a 5G network in the form of data packets. Upon receiving the distress call information, the emergency management center 20 checks the availability of customer service agents and assigns the distress call information to an available agent. After receiving the assigned distress call information, the agent calls back to the emergency call terminal device 10 through the emergency management center 20 to confirm the entrapment situation with the trapped person and reassure them. After confirming the trapped person's situation, the agent further contacts the appropriate department in the emergency rescue terminal 30 based on the elevator basic information in the distress call information for emergency handling. Therefore, this solution pioneers a data-first + passive callback model. It first reports critical information via a highly reliable 5G data channel, then the center proactively calls back to establish a call. This mechanism avoids call failures due to busy lines or no answer, significantly improving call connection rates and timeliness, and offering higher communication reliability. This effectively enhances the efficiency and success rate of rescue operations in elevator entrapment incidents. Furthermore, this solution supports both physical button and intelligent voice triggering, covering special groups such as those without mobile phones or with mobility impairments, providing more comprehensive population coverage. Moreover, the callback secondary confirmation mechanism effectively prevents false alarms caused by everyday conversations or noise.

[0056] In this embodiment, the emergency call terminal device 10 is installed inside the elevator car. For example... Figure 2 As shown, its hardware structure may include: an alarm physical button 21, a main control module 22, a 5G communication module 23, a first microphone 24, a voice recognition module 25, an audio codec 26, a noise reduction module 27, a second microphone 28, a multiplexer 29, a power amplifier module 210, and a speaker 211.

[0057] The alarm physical button 21 provides the most direct way to trigger an alarm and request assistance. The button is connected to the main control module 22 via GPIO input and is typically set to trigger on a falling edge / rising edge interrupt. When a trapped person triggers the alarm physical button 21, the button sends a trigger signal to the main control module 22 via the GPIO interface.

[0058] The main control module 22 uses the ESP32-S3 chip as the system's logic core, responsible for handling key events, controlling the 5G communication module 23 to issue calls / data, audio transmission and PDM processing, controlling the audio codec 26, and serial communication of the voice recognition module 25. Upon receiving the trigger signal from the alarm physical button 21 or the voice recognition result from the voice recognition module 25, it sends a distress signal to the emergency management center 20 via the 5G communication module 23 using HTTP or MQTT protocols; simultaneously, it also transmits preset reassuring voice messages to the multiplexer 29 via PDM audio signals.

[0059] The 5G communication module 23 uses the MR880A chip, supports 5G / 4G networks, and is used to report MQTT / HTTP messages and receive server commands, such as remote number collection and answering. Internally, it supports I2S / I2C audio interfaces. The main control module 22 controls the 5G communication module 23 via AT commands to dial, connect to the network, establish MQTT / HTTP connections, and transmit and receive voice and data for intercom. If VoLTE is used, this is handled automatically by the MR880A.

[0060] The first microphone 24 is used to collect the first voice information of the trapped person and send it to the voice recognition module 25; the first voice information is the relevant distress call issued by the trapped person. The voice recognition module 25 uses Tianwen ASRPRO to recognize offline one-click call voice commands, such as "I'm trapped" or "The elevator is broken," and its output is sent to the main control module 22 via serial port. To improve the accuracy of voice recognition and handle non-standard terms, the voice recognition module 25 has a rich keyword library, which not only includes preset standard distress call keywords but also covers a variety of common, non-standard expressions. Through semantic analysis and fuzzy matching algorithms, it can effectively recognize different expressions. For example, when a person says "I'm trapped in the elevator," the voice recognition module 25 can determine that it is a distress call through semantic understanding and send the recognition result to the main control module 22. Meanwhile, to prevent accidental triggering, the system adopts a dual mechanism of keyword recognition and secondary voice confirmation. When the voice recognition module 25 detects a valid voice command, the main control module 22 can also control the speaker 211 to play a confirmation prompt, such as "Do you need emergency help? Please say 'yes'." The emergency call process is only initiated after secondary confirmation.

[0061] The second microphone 28 is used to collect the second voice information of the trapped person and send it to the noise reduction module 27; the second voice information is the conversation between the trapped person and the customer service representative. The noise reduction module 27 is located between the microphone and the audio codec 26, and performs environmental noise suppression, fixed frequency band filtering, and sound enhancement in an analog manner to provide a clearer audio signal for subsequent voice calls. In addition, the noise reduction module 27 is also used to perform echo suppression in conjunction with the echo feedback of the power amplifier module 210, and sends the echo-suppressed sound signal to the audio codec 26 for processing to achieve echo suppression.

[0062] The audio codec 26 uses the ES8311 chip as a professional codec, responsible for converting the analog signal from the microphone into I2S digital audio and sending it to the 5G communication module 23, and converting the I2S digital audio from the 5G communication module 23 into analog signals and sending them to the power amplifier module 210 for playback. Specifically, the audio codec 26 receives the first audio signal output by the noise reduction module 27, converts the analog first audio signal into first digital audio information, and sends the first digital audio information to the emergency management center 20 via the 5G communication module 23 using the HTTP or MQTT protocol; at the same time, it receives the third digital voice information sent by the customer service representatives through the 5G communication module 23, converts it into an analog third analog voice signal, and sends it to the multiplexer 29.

[0063] The multiplexer 29 is used to convert or switch the PDM audio signal from the self-control module 22 to the corresponding channel through low-pass filtering, and to convert it to the corresponding channel to receive the third analog voice signal sent by the audio codec 26, and then send it to the power amplifier module 210. Its main function is to select different audio input sources, provide analog input for the subsequent audio codec 26 or other processing chips, and realize the selection of different audio acquisition paths.

[0064] The power amplifier module 210 uses an NS4150B chip to amplify the PDM audio signal and the third analog voice signal sent by the multiplexer 29, and drive the speaker 211 to play them. The speaker 211 is used to play voice calls, prompts, alarm notifications, and reassuring voice messages. Simultaneously, the power amplifier module 210 also provides echo feedback to the output of the speaker 211 and sends the feedback information to the noise reduction module 27 to implement an echo cancellation feedback path. This hardware-based elimination of the echo effect of the speaker 211's sound on the microphone reduces howling.

[0065] Therefore, for the emergency call terminal device 10, when the physical button is triggered, the signal is input to the main control module 22 through the GPIO interface. The main control module 22 controls the 5G communication module 23 to send the emergency call information. When a voice trigger is performed, the first microphone 24 collects a voice signal containing preset keywords (such as "help," "elevator is broken," etc.). After being recognized by the voice recognition module 25, the result is sent to the main control module 22 through the serial port, and the main control module 22 then starts the emergency call process. To prevent false triggers, the system can play a secondary confirmation prompt tone through the speaker 211 after the first recognition of the keyword, such as "Do you need emergency help? Please say 'yes'." The system will then formally report the call after receiving the confirmation instruction. During the voice call phase, the voice collected by the second microphone 28 is processed by the noise reduction module 27, including environmental noise suppression and subsequent echo suppression. It is then converted into a digital signal by the audio codec 26 and sent to the customer service terminal through the 5G communication module 23. After the customer service representative's voice message reaches the terminal, it is converted into an analog signal by the audio codec 26, selected by the multiplexer 29, and then played by the speaker 211 via the power amplifier module 210. The power amplifier module 210 also feeds back the speaker 211 output to the noise reduction module 27, which uses this feedback to perform echo suppression, effectively eliminating feedback and ensuring call clarity. The main control module 22 can also play preset reassuring voice messages or status prompts via PDM audio signals through the multiplexer 29, power amplifier module 210, and speaker 211.

[0066] The emergency call management center 20 is considered to be deployed on a cloud server or a local server, monitored 24 / 7 by several customer service representatives. Upon receiving a distress call, the emergency call management center 20 checks the availability of customer service representatives and assigns the distress call to an available representative. The customer service representative then calls back to the distress call terminal device 10 through the emergency call management center 20 to confirm the entrapment situation with the trapped person and reassure them. Additionally, based on the elevator information in the distress call, the representative contacts the appropriate department in the emergency rescue terminal 30 for emergency handling. When the emergency call management center 20 detects that all customer service representatives are busy, it continuously highlights and flashes a reminder on the customer service interface, and supports dynamic interruption of low-priority calls based on event priority, prioritizing entrapment incidents. If there is no effective communication between the customer service representative and the distress call terminal device 10 within a preset time (e.g., 30 seconds), the distress call terminal device 10 sequentially dials the pre-registered phone numbers of the property management, maintenance unit, and community grid based on the elevator information until someone responds.

[0067] The emergency rescue terminal 30 can include emergency organizations such as property management companies, maintenance units, community grid workers, and fire departments. It establishes a data interface with the emergency call management center 20 to promptly initiate emergency rescue operations upon receiving notification from the center. The elevator's basic information includes at least the following structured information: elevator number, geographical location, property management company, maintenance unit, community grid worker, and current time. This information provides accurate reference for emergency rescue work and improves rescue efficiency.

[0068] The following detailed description of the solution is based on specific embodiments.

[0069] Example 1: Intelligent Emergency Call System for Elevator Trapped Persons Based on 5G Communication

[0070] The system comprises three main parts: an emergency call terminal device 10 installed inside the elevator car, an emergency call management center 20 deployed in the cloud, and an emergency rescue terminal 30 serving as the rescue execution unit. The emergency call management center 20 includes an intelligent dispatch engine and customer service terminals. The emergency rescue terminal 30 includes property management, maintenance units, and community grids. When a passenger is trapped, they can press the emergency button on the emergency call terminal device 10 or say keywords such as "help." Upon triggering, the terminal's internal 5G communication module 23 immediately sends a structured alarm data packet (containing the elevator's unique number, installation address, property management and maintenance unit phone numbers, current location, etc.) to the emergency call management center 20 via the 5G network. Upon receiving the data packet, the intelligent dispatch engine of the emergency call management center 20 parses the information and immediately checks the current working status of all customer service agents. The engine assigns the emergency call task to the first available customer service agent, A. A highlighted notification window pops up on Customer Service A's computer screen, displaying detailed information such as the elevator's location and number. It automatically initiates a callback process, calling the emergency call terminal 10 inside the elevator car via a 5G voice channel. Once the terminal 10 rings and connects, Customer Service A can speak with the trapped passengers to understand the situation (such as the number of people and their physical condition), provide professional reassurance, and inform them that rescue has been initiated. Simultaneously, based on information automatically matched by the system, Customer Service A makes a one-click outbound call or notifies the corresponding property management company and maintenance unit through the work order system, requesting them to immediately proceed to the scene for rescue. The entire call process and the issuance of rescue instructions are fully recorded by the system.

[0071] Example 2: Hardware details and signal flow of the emergency call terminal device 10

[0072] The main control module 22 (MCU) uses an ESP32-S3 as its control core. Physical buttons are connected to the MCU via GPIO. The voice recognition module 25 (ASRPRO) communicates with the MCU via a UART serial port and is connected to a dedicated first microphone 24 for picking up trigger keywords. When a button is pressed, the MCU controls the 5G communication module 23 (MR880A) to send alarm data packets to the cloud center via the MQTT protocol using AT commands. When the first microphone 24 picks up a valid keyword and it is recognized and confirmed by the module, the recognition result is communicated to the MCU via a serial port, and the MCU also controls the 5G communication module 23 to send alarm data packets. During a call, the second microphone 28 picks up the passenger's voice, which is initially suppressed by the analog noise reduction module 27 before being sent to the audio codec 26 (ES8311) to be converted into a digital audio signal. This digital audio is transmitted to the 5G module via the I2S interface and sent to the agent's end. Downlink voice data from the agent is transmitted to the codec via the I2S through the 5G communication module 23 and converted into an analog signal. This analog signal, after being selected by multiplexer 29, is sent to power amplifier module 210 (NS4150B) for power amplification, and finally drives speaker 211 to play it out. The output of power amplifier module 210 also sends a feedback signal to noise reduction module 27 to implement analog echo cancellation (AEC), preventing the sound from speaker 211 from being picked up again by second microphone 28 and causing feedback. In addition, the MCU can generate a PDM format reassuring voice digital signal (such as "Please stay calm, rescuers are on their way"), which is then switched into the audio path by multiplexer 29 and played by power amplifier and speaker 211 to achieve automatic reassurance. The first microphone 24 and the second microphone 28 can be the same microphone or different microphones.

[0073] Example 3: Intelligent Scheduling and Multi-level Linkage

[0074] If all 20 customer service agents at the emergency call management center are busy when a distress call arrives, the intelligent dispatch engine will continuously flash a warning on each agent's screen. Agent B, currently handling a non-urgent elevator inquiry call (low priority), can immediately explain the situation to the other party and temporarily interrupt the call upon seeing the flashing warning. The system will then prioritize assigning the entrapment distress call to Agent B. If, after a customer service agent calls back, a valid call cannot be established within 30 seconds due to no one answering in the elevator car or other reasons, the system determines it as a "connection failure." At this point, the intelligent dispatch engine automatically initiates a multi-level call linkage process: first, based on the information in the distress call data packet, it automatically dials the pre-registered mobile phone number of the property manager; if no one answers, it automatically dials the maintenance unit manager's number after a 15-second interval; if there is still no response, it continues to dial the community grid worker's number. This process continues automatically until one party answers. The system then informs the recipient of the elevator location and entrapment situation via voice synthesis or SMS, urging them to take immediate action. All call records and results are logged.

[0075] In addition, such as Figure 3 As shown, the present invention also provides an intelligent emergency call method for elevator entrapment based on 5G communication. This emergency call method is implemented based on the intelligent emergency call system for elevator entrapment based on 5G communication of any of the above embodiments; the method includes the following steps:

[0076] S1: When an elevator entrapment incident occurs, the trapped person can call for help by pressing the physical button or by using the voice trigger on the emergency call terminal device 10;

[0077] S2: After the emergency call terminal device 10 is triggered, the emergency call terminal device 10 uploads the emergency call information to the emergency call management center 20 in the form of data packets through the 5G network; wherein, the emergency call information carries structured elevator basic information;

[0078] S3: Receive the distress call information using the emergency call management center 20, check the availability of customer service agents, and assign the distress call information to available customer service agents;

[0079] S4: After receiving the assigned distress call information, the customer service representative uses the distress call emergency management center 20 to call back the distress call terminal device 10 to confirm the trapped person's situation and reassure the trapped person.

[0080] S5: After confirming the situation of the trapped person, the customer service representative will contact the relevant department in the emergency rescue terminal 30 for emergency handling based on the elevator basic information in the distress call.

[0081] In one embodiment, if the emergency call management center 20 finds that all customer service agents are busy, it will continuously highlight and flash a reminder on the customer service interface. Of course, if the emergency call management center 20 finds that all customer service agents are busy, it can also query the call event priority of the customer service agents and interrupt the call of a customer service agent whose priority is lower than the current entrapment event priority, and assign the current distress information to the interrupted customer service agent for priority processing;

[0082] In one embodiment, if the customer service representative and the emergency call terminal device 10 do not communicate effectively within a preset time, the emergency call terminal device 10 will sequentially dial the pre-registered phone numbers of the property management, maintenance unit, community grid, and fire department based on the elevator's basic information, until someone responds.

[0083] In summary, the intelligent elevator entrapment emergency call system and method based on 5G communication provided by this invention can have at least the following beneficial effects:

[0084] (1) Innovative communication architecture with high reliability: The first "data first + passive callback" mode is created. Key information is reported first through a highly reliable 5G data channel, and then the center actively calls back to establish a call. This mechanism avoids call failures caused by the called party being busy or not answering, greatly improving the call connection rate and timeliness.

[0085] (2) Extremely fast response speed: Fully utilize the characteristics of ultra-low latency (theoretically less than 10ms) and high bandwidth of 5G network to realize millisecond-level uploading of distress information and instantaneous dispatch of agents, thus gaining a critical time window for golden rescue.

[0086] (3) Diverse and intelligent triggering methods: It integrates physical button and offline voice recognition dual triggering modes, covering all groups of people, especially special groups who cannot operate buttons. Through keyword recognition + secondary confirmation mechanism, it effectively prevents false alarms caused by daily conversations or noise.

[0087] (4) Intelligent dispatch and linkage: It has intelligent seat dispatch, priority-based dynamic task interruption, and multi-level automatic telephone follow-up mechanism after call timeout, which ensures that every incident of entrapment can be discovered, responded to and tracked in a timely manner, forming a complete management closed loop and providing strong rescue support.

[0088] (5) Easy to deploy and low cost of renovation: The system terminal equipment has a high degree of integration. It only needs to be installed in the car and connected to the 5G network to work. It does not need to rely on or modify the original complex wired four-way communication line, making it particularly suitable for rapid and economical intelligent safety upgrades of a large number of old elevators.

[0089] The present invention also provides a computing device, including a memory and a processor, wherein the memory stores executable code, and when the processor executes the executable code, it runs the method as described in the above embodiments.

[0090] The present invention also provides a computer-readable storage medium having a computer program stored thereon, which, when executed in a computer, causes the computer to perform the method as described in any of the above embodiments.

[0091] The method embodiments provided by this invention are based on the same inventive concept as the system embodiments in this specification. For details, please refer to the description in the system embodiments in this specification, and will not be repeated here.

[0092] The modules or units in the device of this invention can be merged, divided, and deleted according to actual needs. The above-disclosed embodiments are merely preferred embodiments of the present invention and should not be construed as limiting the scope of the invention. Those skilled in the art will understand that implementing all or part of the processes of the above embodiments and making equivalent changes according to the claims of this invention still fall within the scope of the invention.

Claims

1. An intelligent emergency call system for elevator entrapment based on 5G communication, characterized in that, The system includes: an emergency call terminal device, an emergency call management center, and an emergency rescue terminal; the emergency call terminal device is installed inside the elevator car, and the emergency call management center is deployed on a cloud server or a local server, with several customer service representatives monitoring it around the clock; The distress call terminal device is triggered by the trapped person through a physical button or voice, and after being triggered, it uploads the distress call information to the distress call emergency management center in the form of data packets via the 5G network; wherein, the distress call information carries structured elevator basic information; After receiving the distress call, the emergency management center checks the availability of customer service agents and assigns the distress call to an available customer service agent. The customer service representatives will call back the emergency call terminal through the emergency call management center to confirm the trapped person's situation and reassure them; and, based on the elevator basic information in the emergency call information, contact the relevant department in the emergency rescue terminal for emergency handling.

2. The elevator entrapment intelligent emergency call system based on 5G communication according to claim 1, characterized in that, The emergency call terminal device includes: an alarm physical button, a main control module, and a 5G communication module; When a trapped person triggers the alarm physical button, the alarm physical button inputs a trigger signal to the main control module through the GPIO interface; When the main control module receives a trigger signal, it sends the distress call information to the emergency management center via the 5G communication module using HTTP or MQTT protocol.

3. The elevator entrapment intelligent emergency call system based on 5G communication according to claim 2, characterized in that, The emergency call terminal device also includes: a first microphone and a voice recognition module; The first microphone is used to collect the first voice information of the trapped person and send the collected first voice information to the voice recognition module; wherein, the first voice information is the relevant distress call information issued by the trapped person; The speech recognition module recognizes the received first speech information and sends the speech recognition result to the main control module via a serial port; After receiving the voice recognition result, the main control module sends the distress call information to the emergency management center via the 5G communication module using HTTP or MQTT protocol.

4. The elevator entrapment intelligent emergency call system based on 5G communication according to claim 3, characterized in that, The emergency call terminal device also includes: an audio codec, a noise reduction module, and a second microphone; The second microphone is used to collect the second voice information of the trapped person and send the second voice information to the noise reduction module; wherein, the second voice information is the call information between the trapped person and the customer service representative. The noise reduction module is used to perform noise reduction processing on the second voice information and send the processed first audio signal to the audio codec. The audio codec is used to convert the analog first audio signal into first digital audio information, and send the first digital audio information to the emergency management center via the 5G communication module using HTTP or MQTT protocol.

5. The elevator entrapment intelligent emergency call system based on 5G communication according to claim 4, characterized in that, The emergency call terminal device also includes: a multiplexer, a power amplifier module, and a speaker; The main control module is used to send preset reassuring voice information to the multiplexer via PDM audio signals; The multiplexer is used to switch to the corresponding channel to receive the PDM audio signal and send it to the power amplifier module; The power amplifier module is used to amplify the PDM audio signal and drive the speaker to play the reassuring voice message corresponding to the PDM audio signal in order to comfort the trapped personnel.

6. The elevator entrapment intelligent emergency call system based on 5G communication according to claim 5, characterized in that, After the customer service representative calls back the emergency call terminal device through the emergency call management center, the third voice message issued by the customer service representative is sent to the audio codec through the 5G communication module. The audio codec is used to convert digital third voice information into analog third voice signal, and send the third analog voice signal to the multiplexer; The multiplexer is used to switch to the corresponding channel to receive the third analog voice signal and send it to the power amplifier module; The power amplifier module is used to amplify the third analog voice signal and drive the speaker to play the voice information corresponding to the third analog voice signal.

7. The elevator entrapment intelligent emergency call system based on 5G communication according to claim 6, characterized in that, The power amplifier module is also used to provide echo feedback to the speaker output and send the feedback information to the noise reduction module; The noise reduction module is also used to combine the echo feedback to perform echo suppression, and send the echo-suppressed sound signal to the audio codec for processing to achieve echo suppression.

8. The elevator entrapment intelligent emergency call system based on 5G communication according to claim 1, characterized in that, The basic elevator information includes at least: elevator number, geographical location, property management company, maintenance company, community grid worker, and current time; When the emergency call management center finds that all customer service agents are busy, it will continuously highlight and flash a reminder on the customer service interface, and support customer service agents to dynamically interrupt low-priority calls based on event priority, and prioritize handling entrapment incidents. If the customer service representative and the emergency call terminal do not communicate effectively within a preset time, the emergency call terminal will sequentially dial the phone numbers reserved by the property management, maintenance company, and community grid based on the elevator's basic information, until someone responds.

9. A smart emergency call method for elevator entrapment based on 5G communication, characterized in that, This distress call method is implemented based on the 5G communication-based intelligent distress call system for elevator entrapment as described in any one of claims 1-8; the method includes: When an elevator entrapment incident occurs, the trapped person can call for help by pressing the physical button on the emergency call terminal or by using voice activation. After the emergency call terminal device is triggered, the emergency call information is uploaded to the emergency management center in the form of data packets via the 5G network. The emergency call information carries structured basic elevator information. The emergency call management center receives the distress call information, checks the availability of customer service agents, and assigns the distress call information to available customer service agents. After receiving the assigned distress call information, the customer service representative uses the distress call emergency management center to call back the distress call terminal device to confirm the trapped person's situation and reassure them. After confirming the situation of the trapped person, the customer service representative will contact the relevant department in the emergency rescue system based on the elevator information in the distress call message to carry out emergency handling.

10. The intelligent emergency call method for elevator entrapment based on 5G communication according to claim 9, characterized in that, The method further includes: If the emergency management center finds that all customer service representatives are busy, the message will be continuously highlighted and flashed on the customer service interface. And / or, If the emergency management center finds that all customer service representatives are busy, it will check the call event priority of each representative and interrupt the call of a representative with a lower priority than the current entrapment event. The current distress call information will then be assigned to the interrupted representative for priority processing. And / or, If the customer service representative and the emergency call terminal do not communicate effectively within a preset time, the emergency call terminal will be used to dial the pre-registered phone numbers of the property management, maintenance company, community grid, and fire department based on the elevator's basic information, until someone responds.

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