An automatic rescue emergency device and method for elevators

Abstract

This invention discloses an automatic emergency rescue device and method for elevators, including a fault monitoring module and a rescue module. The rescue module includes a signal input terminal, a control unit, and an analog switch output terminal. The signal input terminal is connected to the sensor interface terminal corresponding to the elevator control system and the sensor interface terminal corresponding to the fault monitoring module, respectively. The control unit is used to locate the fault point based on the elevator operating status electrical signal and control the on / off state of the analog switch output terminal based on the fault point. The analog switch output terminal is connected to the elevator control system interface terminal, which can comprehensively and quickly determine the fault type and initiate the corresponding rescue procedure, thereby improving the overall rescue efficiency and elevator safety.

Description

Technical Field

[0001] This application relates to the field of elevator rescue technology, and in particular to an automatic elevator rescue emergency device and method. Background Technology

[0002] Current elevator emergency rescue systems primarily rely on a combination of elevator control systems and manual intervention. While this approach improves rescue efficiency and safety to some extent, it still presents significant limitations and challenges. Firstly, in most cases, the elevator control system can automatically stop the elevator upon detecting a malfunction and ensure a safe stop through built-in safety mechanisms (such as emergency braking systems). However, in more complex malfunctions, such as mechanical or electrical component failures, the elevator control system often cannot complete the rescue independently and requires external manual intervention. For instance, in cases of elevator entrapment (due to various factors), passengers must rely on the emergency call device inside the car to contact the outside world for help, followed by on-site rescue by professional maintenance personnel. This reliance on manual intervention not only results in a long response time but also demands high levels of expertise from maintenance personnel, thus limiting overall rescue efficiency.

[0003] Furthermore, while existing elevator control systems possess some self-diagnostic capabilities, they perform poorly in handling certain types of serious accidents, particularly water ingress into the shaft and broken elevator traction ropes. These accidents not only cause the elevator control system to malfunction but can also lead to more serious safety hazards, such as electrical circuit breaks or car malfunctions. Due to the lack of effective and specific response mechanisms for such high-risk situations, existing elevator control systems struggle to achieve efficient and safe automatic rescue. Moreover, the automation level of elevator control systems is limited by their design intent: ensuring daily safety rather than rapid response capabilities in emergency situations. Therefore, when faced with sudden major malfunctions, elevator control systems often prove inadequate, unable to provide sufficient and timely support to protect passenger safety. Summary of the Invention

[0004] This application aims to at least partially address one of the technical problems in the related art.

[0005] Therefore, the first objective of this application is to propose an automatic emergency rescue device for elevators that can comprehensively and quickly determine the type of malfunction and initiate the corresponding rescue procedure, thereby improving overall rescue efficiency and elevator safety.

[0006] The second objective of this application is to propose an automatic emergency rescue method for elevators.

[0007] To achieve the above objectives, the first aspect of this application proposes an automatic elevator rescue emergency device, including a fault monitoring module and a rescue module. The rescue module includes a signal input terminal, a control unit, and an analog switch output terminal. The fault monitoring module includes a float level sensor, a tension sensor, and a temperature sensor.

[0008] The signal input terminal is connected to the sensor corresponding to the elevator control system and the sensor interface terminal corresponding to the fault monitoring module, respectively, for continuously receiving the elevator operating status electrical signal.

[0009] The control unit is used to locate the fault point based on the elevator operating status electrical signal and control the on / off state of the analog switch output terminal based on the fault point.

[0010] The output terminal of the analog switch is connected to the interface terminal of the elevator control system and is used to output a switch control signal to the elevator control system.

[0011] The elevator operating status electrical signals include manual maintenance electrical signals, running electrical signals, light curtain electrical signals, leveling electrical signals, door lock electrical signals, emergency stop electrical signals, upper terminal electrical signals, and shaft water ingress electrical signals, traction rope strand breakage electrical signals, and machine room temperature electrical signals, all acquired by sensors corresponding to the elevator control system.

[0012] The water inlet electrical signal of the shaft is obtained through a float level sensor installed in the elevator shaft.

[0013] The electrical signal indicating a broken strand in the traction rope is acquired by a tension sensor located at the lateral position of the traction rope.

[0014] The temperature signal of the machine room is obtained through a temperature sensor installed in the elevator machine room.

[0015] In some implementations, the output terminal of the analog switch includes a maintenance analog switch, an upper maintenance analog switch, a lower maintenance analog switch, a door opening analog switch, a door closing analog switch, a door lock analog switch, and an emergency stop analog switch.

[0016] In some implementations, the tension sensor includes a pull wire and a triggering mechanism. There are two pull wires, which are arranged horizontally and parallel to each other on the front and rear sides of the traction rope. One end of the pull wire is fixed to the steel beam of one side of the traction machine, and the other end of the pull wire is connected to the triggering mechanism, which is fixed to the steel beam of the other side of the traction machine.

[0017] To achieve the above objectives, a second embodiment of this application proposes an automatic elevator rescue emergency method, comprising:

[0018] S1, obtains the elevator operating status electrical signal through the sensors corresponding to the elevator control system and the sensors corresponding to the fault monitoring module;

[0019] S2, the signal input terminal continuously receives electrical signals indicating the elevator's operating status;

[0020] S3, the control unit locates the fault point based on the elevator's operating status electrical signal;

[0021] S4, the control unit controls the on / off state of the analog switch output based on the elevator's operating status electrical signal and the fault point;

[0022] S5, the analog switch output terminal outputs a switch control signal to the elevator control system.

[0023] In some implementations, the sensor in S1 is configured to acquire a valid electrical signal in response to the detection of a specific condition, and maintain an invalid output state when the specific condition is not detected.

[0024] In some implementations, the response to detecting specific conditions to acquire a valid electrical signal includes acquiring a valid electrical signal when the elevator is in manual maintenance state, running state, light curtain unobstructed state, leveling arrival state, door lock closed state, emergency stop closed state, top floor state, shaft water ingress state, traction rope strand breakage state, or machine room high temperature state.

[0025] In some implementations, S3 includes:

[0026] The control unit locates the fault points of the well water inlet, the traction rope strand breakage, and the machine room temperature based on the electrical signals received from the signal input terminal.

[0027] The control unit locates the emergency stop fault point based on the absence of emergency stop signal, operation signal, and leveling signal at the signal input terminal.

[0028] The control unit locates the door lock fault point based on the absence of door lock electrical signals, operation electrical signals, and leveling electrical signals at the signal input terminal.

[0029] In some implementations, the wellbore water ingress fault point, traction rope strand breakage fault point, and machine room temperature fault point include in S4:

[0030] S401, when the waiting signal input terminal receives the leveling electrical signal but does not receive the running electrical signal, the control unit controls the door opening simulation switch to close and the maintenance simulation switch to close.

[0031] S402, when the signal input terminal receives the light curtain electrical signal, the control unit controls the door closing simulation switch to close.

[0032] In some implementations, the well water inlet fault point further includes, after S402:

[0033] S403, the control unit controls the closing of the analog switch for maintenance, and obtains the terminal electrical signal from the signal input terminal.

[0034] In some implementations, the emergency stop fault point in S4 includes:

[0035] S411, the control unit controls the closing of the maintenance simulation switch and the closing of the emergency stop simulation switch;

[0036] S412, when the emergency power outage signal is received again at the signal input terminal, the control unit controls the upper or lower maintenance analog switch to close.

[0037] S413, when the waiting signal input terminal receives the leveling electrical signal but does not receive the running electrical signal, the control unit controls the door opening simulation switch to close.

[0038] S414, when the signal input terminal receives the light curtain electrical signal, the control unit controls the door closing simulation switch to close and controls the emergency stop simulation switch to open.

[0039] The embodiments of this application have the following technical effects:

[0040] This application addresses the technical problem of existing elevator control systems, which often rely on manual intervention when facing complex faults, resulting in long response times and low efficiency. It designs an automatic elevator rescue emergency device independent of the elevator control system. This device can immediately collect electrical signals from various sources, including operating signals, leveling signals, water ingress signals in the shaft, traction rope strand breakage signals, machine room temperature signals, emergency stop signals, and door lock signals. It then quickly determines the fault type and initiates the corresponding rescue procedure. This external rescue emergency device possesses greater autonomy and real-time capability, enabling rapid initial handling and effectively shortening the time from fault occurrence to rescue implementation, significantly improving overall rescue efficiency.

[0041] This application not only identifies the basic operating status of elevators but also specifically monitors high-risk conditions such as water ingress into the shaft and broken strands in the traction rope, taking immediate action upon detecting these serious incidents. This method ensures effective protection of passenger safety even in extreme circumstances, reducing the escalation of risks due to delays.

[0042] This application addresses the technical problem that existing maintenance personnel typically need to troubleshoot faults line by line, which is time-consuming and inefficient. By analyzing various collected electrical signals, it can accurately determine the specific location of the fault and use simulated switches to perform simulated recovery operations for some faults, enabling timely rescue. This not only helps elevators return to normal operation as quickly as possible but also provides a clear direction for subsequent professional maintenance, significantly reducing troubleshooting time and labor costs.

[0043] Upon detecting a fault, this device can quickly put the elevator into maintenance mode and immediately notify maintenance personnel. Because the device can accurately pinpoint the fault location and handle it via a simulated switch, maintenance personnel can directly begin work based on the known fault information and location upon arrival at the site, eliminating the need for tedious troubleshooting of individual circuits or components as in traditional methods. This precise fault location capability greatly simplifies the maintenance process, reduces problem-finding time, significantly improves maintenance efficiency, further shortens repair time, and ensures the elevator is restored to normal operation as quickly as possible.

[0044] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0045] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the following description of the embodiments taken in conjunction with the accompanying drawings, wherein:

[0046] Figure 1 This is a structural block diagram of an automatic elevator rescue emergency device provided in an embodiment of this application;

[0047] Figure 2 A logic signal diagram of an automatic elevator rescue emergency device provided in this application embodiment;

[0048] Figure 3 This is a schematic diagram of the tension sensor of an automatic elevator rescue emergency device provided in an embodiment of this application;

[0049] Figure 4 This is a schematic diagram of the absolute leveling electrical signal induction structure of an automatic elevator rescue emergency device provided in an embodiment of this application;

[0050] Figure 5 A partial circuit diagram of an automatic elevator rescue emergency device provided in this application embodiment;

[0051] Figure 6 A flowchart of an automatic elevator rescue emergency method provided in this application embodiment;

[0052] Figure 7 This is a schematic diagram of the structure of an electronic device provided in an embodiment of this application.

[0053] In the picture:

[0054] 1. Broken strand end, 2. Traction rope, 3. Pull wire, 4. Triggering mechanism, 5. Traction machine steel beam, 6. Elevator car, 7. Upper leveling sensor, 8. Lower leveling sensor, 9. Induction bridge plate, 10. Ground, 700. Electronic equipment, 701. Processor, 702. Memory. Detailed Implementation

[0055] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this application, and should not be construed as limiting this application.

[0056] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this application, and should not be construed as limiting this application.

[0057] An automatic elevator rescue emergency device and method according to an embodiment of this application is described below with reference to the accompanying drawings.

[0058] like Figure 1 As shown, an automatic emergency rescue device for elevators includes: a fault monitoring module and a rescue module. The rescue module includes a signal input terminal, a control unit, and an analog switch output terminal. The fault monitoring module includes a float level sensor, a tension sensor, and a temperature sensor. The signal input terminal is connected to the sensor interface terminal corresponding to the elevator control system and the sensor interface terminal corresponding to the fault monitoring module, respectively, for continuously receiving elevator operating status electrical signals. The control unit is used to locate the fault point based on the elevator operating status electrical signals and control the on / off state of the analog switch output terminal based on the fault point. The analog switch output terminal is connected to the interface terminal of the elevator control system for outputting switch control signals to the elevator control system.

[0059] like Figure 2 As shown, the elevator operating status electrical signals include manual maintenance signals, running signals, light curtain signals, leveling signals, door lock signals, emergency stop signals, and upper terminal signals acquired by sensors in the elevator control system, and shaft water ingress signals, traction rope strand breakage signals, and machine room temperature signals acquired by sensors in the fault monitoring module. Door lock signals include car door lock signals and hall door lock signals. Emergency stop signals include car emergency stop signals, machine room emergency stop signals, and pit emergency stop signals. The shaft water ingress signal is acquired by a float level sensor installed in the elevator shaft; the traction rope strand breakage signal is acquired by a tension sensor installed at the lateral position of the traction rope; and the machine room temperature signal is acquired by a temperature sensor installed in the elevator machine room. Corresponding input ports X0-X15 are provided for the signal input terminals.

[0060] In some embodiments, the float level sensor is installed 75mm from the bottom of the wellbore and consists of a magnetic induction switch and a float. When the magnetic induction switch is in the off state, if the water accumulation in the pit reaches 65mm or more, the magnetic induction switch can be triggered to obtain the water inlet electrical signal of the wellbore. Figure 3 As shown, the tension sensor includes a pull wire 3 and a trigger mechanism 4. There are two pull wires 3, arranged horizontally and parallel to each other on the front and rear sides of the traction rope 2. One end of the pull wire 3 is fixed to one side of the traction machine steel beam 5, and the other end is connected to the trigger mechanism 4. The trigger mechanism 4 is fixed to the other side of the traction machine steel beam 5. If a strand of the traction rope 2 breaks, the broken strand end 1 pulls the pull wire 3, driving the trigger mechanism 4 to obtain an electrical signal indicating the broken strand. The two pull wires are 1.5mm-4mm away from the elevator traction rope. A temperature sensor is installed in the elevator machine room or elevator control cabinet; when the temperature exceeds the specified temperature, the temperature sensor can obtain an electrical signal indicating the machine room temperature, which is 40℃.

[0061] like Figure 4 As shown, in some embodiments, the elevator's leveling status is determined by acquiring a leveling electrical signal. The elevator car 6 is equipped with an upper leveling sensor 7 and a lower leveling sensor 8 on its top, as well as a sensor bridge plate 9 mounted on the guide rail support. The sensor bridge plate 9 works in conjunction with the upper leveling sensor 7 and the lower leveling sensor 8 installed on the top of the elevator car 6. When the elevator moves upwards and approaches a certain floor, the lower leveling sensor 8 first enters the area of ​​the sensor bridge plate 9, obtaining a lower leveling electrical signal, indicating that the elevator car has entered the leveling zone but has not yet reached the absolute leveling position. As the elevator continues to rise, when the upper leveling sensor 7 also enters the same area of ​​the sensor bridge plate 9, it obtains an upper leveling electrical signal, thus identifying that the car has reached the absolute leveling position. The absolute leveling position refers to the state where the elevator car 6 is completely aligned with the floor surface when it stops at a floor, ensuring the safety and convenience of passengers entering and exiting the elevator. In this embodiment, the leveling electrical signal, i.e., the electrical signal obtained by the two leveling sensors, can accurately determine whether the elevator car has reached the absolute leveling position and implement the next operation.

[0062] In some embodiments, the closure of the elevator door is determined by acquiring a light curtain electrical signal. Specifically, the elevator contains a light curtain sensor, which consists of a light curtain signal transmitter and a light curtain signal receiver installed on both sides of the elevator car door. When a person (object) enters or exits the car, the light beam emitted by the light curtain signal transmitter is blocked, and the light curtain signal receiver does not receive the light beam signal and does not generate a light curtain electrical signal, indicating that someone (object) is entering or exiting the car. When the light curtain sensor detects that the light beam is not blocked, it generates a light curtain electrical signal, indicating that no one (object) is entering or exiting the car at this time.

[0063] In some embodiments, when a maintenance worker manually touches the maintenance button on the elevator control system to put the elevator into maintenance mode, a manual maintenance electrical signal is acquired, indicating that a professional has arrived on site to handle the situation. At this time, the rescue module automatically shuts down. Operating electrical signals, upper terminal electrical signals, door lock electrical signals, and emergency stop electrical signals are acquired through the elevator control system's monitoring of switch on / off status or through built-in sensors, allowing for real-time acquisition of critical electrical signals. Switch on / off status utilizes the on / off characteristics of electrical contacts to achieve signal feedback.

[0064] like Figure 2 As shown, in some embodiments, the analog switch output terminals include voice broadcast analog switches, door closing analog switches, door opening analog switches, maintenance analog switches, maintenance up analog switches, maintenance down analog switches, door lock analog switches, and emergency stop analog switches. Door lock analog switches include hall door lock analog switches and car door lock analog switches. Emergency stop analog switches include car emergency stop analog switches, machine room emergency stop analog switches, and pit emergency stop analog switches. Voice broadcast analog switches include safety circuit voice broadcast analog switches, hoistway water ingress voice broadcast analog switches, traction rope strand breakage voice broadcast analog switches, and machine room temperature broadcast analog switches. The analog switch output terminals are equipped with corresponding output ports Y0-Y15 for outputting switch control signals to the elevator control system.

[0065] In some embodiments, the corresponding voice broadcast analog switch is closed according to different fault points, and a switch control signal is output to the voice broadcast control box. The voice broadcast control box is independently set outside the elevator control system.

[0066] In some embodiments, the core components of the analog switch output terminal are a series of signal contacts and analog switches (such as voice broadcast analog switches, door closing analog switches, door opening analog switches, maintenance analog switches, maintenance up analog switches, maintenance down analog switches, etc.). These physical components are connected to the elevator control system via electrical wiring to form a control loop. Only when the switch control signal is correctly output and the corresponding analog switch is closed can the control loop operate effectively, and the elevator can perform the corresponding actions as needed.

[0067] In some embodiments, the core components of the elevator safety circuit are a series of safety contacts and switches (such as hall door locks, car door locks, pit emergency stop, car emergency stop, machine room emergency stop, etc.). These physical components are connected in series via electrical wiring to form a circuit. The circuit can only be completed and the elevator can only operate normally when all safety components are in a normal state (contacts closed); if any component malfunctions (contacts open), the circuit is interrupted, and the elevator immediately stops. In this embodiment, both the emergency stop simulation switch and the door lock simulation switch are equipped with a set of passive contacts. By controlling the closing of the emergency stop simulation switch and the door lock simulation switch at the output of the simulation switch, the elevator safety circuit is completed, forming a bypass circuit. Figure 5As shown, the emergency stop switch and door lock switch on the left side of the elevator control system form the elevator safety circuit. When the elevator safety circuit is in the conducting state, the emergency stop and door lock switches are closed, and the rescue module can obtain the emergency stop power signal and door lock power signal. When the emergency stop or door lock switch in the elevator safety circuit is in the open state, the rescue module does not receive the emergency stop power signal and door lock power signal. For emergency rescue needs, the elevator safety circuit needs to be activated. For example, taking the emergency stop switch being open as an example, 24-220V voltage enters from the left side, the active contact on the left side of the emergency stop switch has a voltage level, and the active contact on the right side has no voltage level. The control unit controls the emergency stop simulation switch to close, and the voltage level of the contact on the left side of the emergency stop switch reaches the passive contact at one end of the emergency stop simulation switch along the bypass. Since the emergency stop simulation switch is closed, the voltage level returns to the active contact on the right side of the emergency stop switch, forming a bypass circuit. Figure 5 The dashed line represents a bypass loop.

[0068] An embodiment of this application discloses an automatic elevator rescue emergency device that distinguishes between two different maintenance states: one is a manual maintenance electrical signal obtained from the signal input terminal, and the other is a maintenance switch control signal based on the fault point control of the control unit. When a maintenance personnel manually touches the maintenance button to put the elevator into maintenance mode, the system receives the manual maintenance electrical signal, indicating that a professional has arrived on site to handle the issue. At this time, the rescue procedure, voice broadcast, and alarm will automatically exit to avoid unnecessary interference and repetitive operations, ensuring the smooth progress of maintenance work. When the system detects a corresponding fault through the control unit, it automatically closes the maintenance simulation switch, switches the elevator to maintenance mode, and simultaneously activates the alarm mechanism to promptly notify relevant personnel and implement emergency rescue measures. In this case, the voice broadcast function remains active to remind passengers in the car and external monitoring personnel of the current risks. The advantage of distinguishing between these two maintenance states is that it can effectively avoid misoperation, reduce interference with ongoing maintenance work, and prevent secondary injuries caused by ignoring real faults, thereby improving the reliability and safety of the device and better protecting passenger safety.

[0069] In an embodiment of this application, an automatic elevator rescue emergency device collects elevator safety hazards such as water ingress in the shaft, broken strands in the traction rope, and machine room temperature through a fault monitoring module. This prevents elevator malfunctions and personnel safety incidents caused by the expansion of safety hazards. By connecting the control unit to the analog switch output, different rescue strategies can be adopted according to different fault points, automatically completing emergency rescue and significantly shortening the time people are trapped in the elevator. This invention not only overcomes the shortcomings of existing technologies but also improves the performance and application effect of elevator control systems in emergency rescue, possessing broad market application prospects.

[0070] Based on any of the above embodiments, such as Figure 6As shown in the embodiments of this application, an automatic elevator rescue emergency method is also proposed, including:

[0071] Step S1: Obtain the elevator operating status electrical signal through the sensors corresponding to the elevator control system and the sensors corresponding to the fault monitoring module.

[0072] In some embodiments, the sensor is configured to acquire a valid electrical signal in response to detecting a specific condition, and maintain an invalid output state when the specific condition is not detected. The representation of the electrical signal in this embodiment relies on the basic principles of digital signal processing, where the presence or absence of a signal is represented by binary logic (1 or 0). Specifically, when a sensor detects the presence of a specific condition (e.g., door lock closed, leveling arrival, etc.), an electrical signal is generated, and this state can be marked as 1; conversely, if the condition does not exist (e.g., door unlocked, elevator not at level, etc.), no electrical signal is generated, and this state can be marked as 0. This simple binary representation method can effectively reflect the working status of various key components of the elevator, providing a basis for real-time monitoring and fault diagnosis of the system. Specifically, the elevator acquires valid electrical signals when it is in manual maintenance state, running state, light curtain unobstructed state, leveling arrival state, door lock closed state, emergency stop closed state, top floor state, shaft water ingress state, traction rope broken strand state, or machine room high temperature state; otherwise, it maintains an invalid output state.

[0073] Step S2: The signal input terminal continuously receives the elevator operating status electrical signal.

[0074] The signal input terminal is connected to the elevator control system and fault monitoring module via wires to continuously receive electrical signals indicating the elevator's operating status and monitor the elevator's operating status.

[0075] Step S3: The control unit locates the fault point based on the elevator's operating status electrical signal.

[0076] In some embodiments, the control unit locates the fault points of the well water inlet, traction rope strand breakage, and machine room temperature based on the electrical signals received from the signal input terminal. The control unit locates the fault point of the emergency stop based on the absence of the emergency stop signal, operation signal, and leveling signal from the signal input terminal. The control unit locates the fault point of the door lock based on the absence of the door lock electrical signals, operation signal, and leveling signal from the signal input terminal.

[0077] Step S4: The control unit controls the on / off state of the analog switch output terminal based on the elevator operating status electrical signal and the fault point.

[0078] Once the signal input terminal transmits the collected elevator operating status electrical signal to the control unit and locates the fault point, the control unit controls the elevator to enter maintenance mode. After the elevator enters maintenance mode, the rescue module controls the maintenance up and maintenance down buttons and the maintenance door operator system (door opening and closing) of the elevator control system, allowing the elevator to operate in maintenance mode.

[0079] Step S5: The analog switch output terminal outputs a switch control signal to the elevator control system.

[0080] The output of the analog switch is connected to the elevator control system via a wire to form a closed signal transmission loop. Changes in the state of the analog switch are recognized by the elevator control system, triggering corresponding actions. The elevator control system then controls the elevator to carry out rescue operations.

[0081] In some embodiments, the wellbore water ingress fault point, traction rope strand breakage fault point, and machine room temperature fault point include in step S4:

[0082] Step S401: When the signal input terminal receives a leveling electrical signal but does not receive a running electrical signal, the control unit controls the door opening simulation switch to close and the maintenance simulation switch to close.

[0083] In some embodiments, when a water ingress fault occurs in the shaft, a broken strand of the traction rope, or a temperature fault occurs in the machine room, the elevator car will not stop running. The signal input terminal receives the leveling electrical signal and the running electrical signal. When the upper leveling electrical signal (1) and the lower leveling electrical signal (1) are received, and the running electrical signal (0) is not received, it means that the elevator has reached the absolute level position and stopped running. The control door simulation switch, the maintenance simulation switch, and the voice broadcast simulation switch are closed. The elevator control system controls the elevator to open the elevator door and simultaneously controls the elevator to enter the maintenance state, notifying the management platform that the elevator has malfunctioned. Maintenance personnel can quickly arrive at the site for repair. The voice broadcast control box plays the corresponding fault voice.

[0084] Step S402: When the signal input terminal receives the light curtain electrical signal, the control unit controls the door closing simulation switch to close.

[0085] When the elevator door is opened and people are evacuating, the signal input terminal does not receive the light curtain electrical signal (0). After all the people in the elevator have evacuated, the signal input terminal receives the light curtain electrical signal (1), controls the door closing simulation switch to close, and the elevator control system controls the elevator door to close, waiting for maintenance personnel to arrive.

[0086] In some embodiments, the well water inlet fault point further includes, after step S402:

[0087] In step S403, the control unit controls the maintenance analog switch to close, and obtains the terminal electrical signal from the signal input terminal.

[0088] The control unit controls the maintenance simulation switch to close, and the elevator slowly moves upward. The speed of the elevator is 0.01m / s-0.63m / s. When the upper terminal electrical signal (1) is obtained, it indicates that the elevator has reached the top floor, thus avoiding water ingress into the shaft and damage to the elevator car electronic components.

[0089] In reality, when water enters the elevator shaft, it doesn't instantly spread to the car. Similarly, overheating in the machine room and broken strands in the traction rope don't immediately cause the car to malfunction. However, all three situations can rapidly worsen and lead to more serious safety hazards. Existing elevator control systems lack real-time monitoring capabilities for water ingress, broken strands in the traction rope, and machine room temperature, making it difficult to detect problems early and take corrective measures, thus posing significant safety risks. This application specifically considers these three elevator hazards. By inputting signals to them through a fault monitoring module, it can detect anomalies in their early stages and issue timely warning signals, achieving preventative and predictive functions. This not only improves the elevator's safety performance but also buys valuable response time for maintenance personnel, effectively preventing the development of potential dangers and ensuring passenger safety. It is worth noting that the probability of water ingress, broken strands in the traction rope, and overheating in the machine room occurring simultaneously is extremely low. Therefore, this embodiment assumes that these three situations will not occur simultaneously to achieve an ideal state.

[0090] In some embodiments, the emergency stop fault point in S4 includes:

[0091] S411, the control unit controls the closing of the maintenance simulation switch and the closing of the emergency stop simulation switch;

[0092] When the signal input terminal does not receive an emergency stop signal (0) or a running signal (0), and the upper and lower leveling signals are (0,0), an emergency stop fault occurs in the elevator. This indicates that the elevator safety circuit is disconnected and the elevator is in a leveling state. The control unit controls the maintenance simulation switch to close, and the elevator control system controls the elevator to enter maintenance mode, notifying the management platform that the elevator has malfunctioned. Maintenance personnel can quickly arrive at the site for repair. The control unit controls the safety circuit voice broadcast simulation switch to close, and the voice broadcast control box plays a safety circuit fault voice message. The control unit controls the emergency stop simulation switch to close, and the closure of the emergency stop simulation switch forms a bypass circuit, reconnecting the elevator safety circuit.

[0093] S412, when the emergency power outage signal is received again at the signal input terminal, the control unit controls the upper or lower maintenance analog switch to close.

[0094] The specific process is as follows: After the elevator safety circuit is connected, the signal input terminal receives the emergency power stop signal again (1). The control unit controls the upper maintenance simulation switch or the lower maintenance simulation switch to close. The elevator automatic rescue emergency device controls the elevator to run slowly upward or downward until the elevator reaches the nearest level position.

[0095] S413, when the waiting signal input terminal receives a leveling electrical signal but does not receive a running electrical signal, the control unit controls the door opening simulation switch to close.

[0096] The specific process is as follows: The elevator control system collects leveling electrical signals (upper leveling sensor, lower leveling sensor) and running electrical signals through its sensors and transmits them to the signal input terminal. The signal input terminal receives the leveling electrical signals and the running electrical signals. When the upper leveling electrical signal (1) and the lower leveling electrical signal (1) are received, and the running electrical signal (0) is not received, it means that the elevator has reached the absolute level position and stopped running. The control unit controls the door opening simulation switch to close, and the elevator control system controls the opening of the elevator door.

[0097] S414, when the signal input terminal receives the light curtain electrical signal, the control unit controls the door closing simulation switch to close and controls the emergency stop simulation switch to open.

[0098] The specific process is as follows: When the elevator door is opened and people are evacuating, the signal input terminal does not receive the light curtain electrical signal (0). After all the people in the elevator have evacuated, the signal input terminal receives the light curtain electrical signal (1). The control unit controls the door closing simulation switch to close, the elevator control system controls the elevator door to close, controls the emergency stop simulation switch to open, and the elevator safety circuit returns to the disconnected state, waiting for maintenance personnel to arrive.

[0099] In some embodiments, the door lock failure point and the emergency stop failure point are connected in series with a safety circuit, and the automatic emergency rescue method used is similar and will not be described in detail here.

[0100] In some embodiments, the machine room temperature electrical signal, the shaft water ingress electrical signal, and the traction rope strand breakage electrical signal are unique monitoring electrical signals of this device. These signals are acquired by newly added sensors and used to monitor the elevator operating environment and the status of critical components. When these unique electrical signals indicate an anomaly, the control unit can directly activate the maintenance simulation switch, putting the elevator into maintenance mode without contact connection. This non-contact fault point simulation recovery mechanism quickly responds to potential risks, prevents further deterioration of the fault, and ensures that the elevator can safely and slowly run to the target level to complete the rescue.

[0101] In contrast, door lock signals and emergency stop signals, as key electrical signals for elevator safety control, require contact docking to implement specific rescue steps during emergency operations. First, the control unit activates the maintenance simulation switch to put the elevator into maintenance mode. Then, for specific door lock or emergency stop faults, contact docking is executed to directly intervene in the elevator's operation, such as opening the elevator door or immediately stopping the elevator, thereby ensuring the safe evacuation of passengers.

[0102] Therefore, the three unique electrical signals—machine room temperature, water ingress into the shaft, and broken strand of the traction rope—can be directly switched to maintenance mode via the control unit for rapid rescue. Door locks and emergency power stop signals, however, require further precise control via contact points to ensure effective rescue in the shortest possible time. These two different approaches together enhance the system's flexibility and response speed, maximizing passenger safety.

[0103] To implement the above embodiments, this application also proposes an electronic device. Please see [link to relevant documentation]. Figure 7 , Figure 7 This is a schematic diagram of the structure of the electronic device provided in an embodiment of this application. For example... Figure 7 As shown, the electronic device 700 includes: a processor 701 and a memory 702 communicatively connected to the processor 701; the memory 702 stores computer execution instructions; the processor 701 executes the computer execution instructions stored in the memory to implement the method provided in the foregoing embodiments.

[0104] To implement the above embodiments, this application also proposes a computer-readable storage medium storing computer-executable instructions, which, when executed by a processor, are used to implement the methods provided in the foregoing embodiments.

[0105] To implement the above embodiments, this application also proposes a computer program product, including a computer program that, when executed by a processor, implements the methods provided in the foregoing embodiments.

[0106] Those skilled in the art will understand that all or part of the steps of the methods in the above embodiments can be implemented by a program instructing related hardware. The program can be stored in a computer-readable storage medium, and when executed, the program includes one or a combination of the steps of the method embodiments.

[0107] Furthermore, the functional units in the various embodiments of this application can be integrated into a processing module, or each unit can exist physically separately, or two or more units can be integrated into a module. The integrated module can be implemented in hardware or as a software functional module. If the integrated module is implemented as a software functional module and sold or used as an independent product, it can also be stored in a computer-readable storage medium.

[0108] The storage medium mentioned above can be a read-only memory, a disk, or an optical disk, etc. Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of this application.

Claims

1. An automatic rescue emergency device for elevators, characterized in that, It includes a fault monitoring module and a rescue module. The rescue module includes a signal input terminal, a control unit, and an analog switch output terminal. The fault monitoring module includes a float level sensor, a tension sensor, and a temperature sensor. The signal input terminal is connected to the sensor corresponding to the elevator control system and the sensor interface terminal corresponding to the fault monitoring module, respectively, for continuously receiving the elevator operating status electrical signal. The control unit is used to locate the fault point based on the elevator operating status electrical signal and to control the on / off state of the analog switch output terminal based on the elevator operating status electrical signal and the fault point. The output terminal of the analog switch is connected to the interface terminal of the elevator control system and is used to output a switch control signal to the elevator control system. The elevator operating status electrical signals include manual maintenance electrical signals, running electrical signals, light curtain electrical signals, leveling electrical signals, door lock electrical signals, emergency stop electrical signals, upper terminal electrical signals, and shaft water ingress electrical signals, traction rope strand breakage electrical signals, and machine room temperature electrical signals, all acquired by sensors corresponding to the elevator control system. The water inlet electrical signal of the shaft is obtained through a float level sensor installed in the elevator shaft. The electrical signal indicating a broken strand in the traction rope is acquired by a tension sensor located at the lateral position of the traction rope. The temperature signal of the machine room is obtained through a temperature sensor installed in the elevator machine room; The output terminals of the analog switch include a maintenance analog switch, an upper maintenance analog switch, a lower maintenance analog switch, a door opening analog switch, a door closing analog switch, a door lock analog switch, and an emergency stop analog switch. The control unit locates the fault points of the well water inlet, the traction rope strand breakage, and the machine room temperature based on the electrical signals received from the signal input terminal. The control unit locates the emergency stop fault point based on the absence of emergency stop signal, operation signal, and leveling signal at the signal input terminal. The control unit locates the door lock fault point based on the absence of door lock electrical signals, operation electrical signals, and leveling electrical signals at the signal input terminal. For the aforementioned fault points such as water ingress in the shaft, broken strand of the traction rope, and temperature fault in the machine room, the control unit controls the on / off state of the analog switch output based on the elevator operating status electrical signal and the fault point, including: When the signal input terminal receives a leveling electrical signal but does not receive a running electrical signal, the control unit controls the door opening simulation switch to close and the maintenance simulation switch to close. When the signal input terminal receives the light curtain electrical signal, the control unit controls the door closing simulation switch to close. For the aforementioned water ingress fault point in the shaft, the control unit's control of the analog switch output terminal's on / off state based on the elevator's operating status electrical signal and the fault point also includes: The control unit controls the closing of the analog switch for maintenance, and obtains the terminal electrical signal from the signal input terminal.

2. The automatic elevator rescue emergency device according to claim 1, characterized in that, The tension sensor includes a pull wire and a triggering mechanism. There are two pull wires, which are arranged horizontally and parallel to each other on the front and rear sides of the traction rope. One end of the pull wire is fixed to the steel beam of one side of the traction machine, and the other end of the pull wire is connected to the triggering mechanism. The triggering mechanism is fixed to the steel beam of the other side of the traction machine.

3. An automatic elevator rescue emergency method using the automatic elevator rescue emergency device according to any one of claims 1-2, characterized in that, The method includes: S1, obtains the elevator operating status electrical signal through the sensors corresponding to the elevator control system and the sensors corresponding to the fault monitoring module; S2, the signal input terminal continuously receives electrical signals indicating the elevator's operating status; S3, the control unit locates the fault point based on the elevator's operating status electrical signal; S4, the control unit controls the on / off state of the analog switch output based on the elevator's operating status electrical signal and the fault point; S5, the analog switch output terminal outputs a switch control signal to the elevator control system.

4. The automatic emergency rescue method for elevators according to claim 3, characterized in that, The sensor in S1 is configured to acquire a valid electrical signal in response to the detection of a specific condition, and maintain an invalid output state when the specific condition is not detected.

5. The automatic emergency rescue method for elevators according to claim 4, characterized in that, The response to obtaining a valid electrical signal in response to the detection of specific conditions includes obtaining a valid electrical signal when the elevator is in manual maintenance state, running state, light curtain unobstructed state, leveling arrival state, door lock closed state, emergency stop closed state, top floor state, shaft water ingress state, traction rope broken strand state, or machine room high temperature state.

6. The automatic emergency rescue method for elevators according to claim 5, characterized in that, S3 includes: The control unit locates the fault points of the well water inlet, the traction rope strand breakage, and the machine room temperature based on the electrical signals received from the signal input terminal. The control unit locates the emergency stop fault point based on the absence of emergency stop signal, operation signal, and leveling signal at the signal input terminal. The control unit locates the door lock fault point based on the absence of door lock electrical signals, operation electrical signals, and leveling electrical signals at the signal input terminal.

7. The automatic emergency rescue method for elevators according to claim 6, characterized in that, The wellbore water ingress fault point, traction rope strand breakage fault point, and machine room temperature fault point are included in S4 as follows: S401, when the waiting signal input terminal receives the leveling electrical signal but does not receive the running electrical signal, the control unit controls the door opening simulation switch to close and the maintenance simulation switch to close. S402, when the signal input terminal receives the light curtain electrical signal, the control unit controls the door closing simulation switch to close.

8. The automatic emergency rescue method for elevators according to claim 7, characterized in that, The wellhead water inlet fault point after S402 also includes: S403, the control unit controls the closing of the analog switch for maintenance, and obtains the terminal electrical signal from the signal input terminal.

9. The automatic emergency rescue method for elevators according to claim 6, characterized in that, The emergency stop fault point in S4 includes: S411, the control unit controls the closing of the maintenance simulation switch and the closing of the emergency stop simulation switch; S412, when the emergency power outage signal is received again at the signal input terminal, the control unit controls the upper or lower maintenance analog switch to close. S413, when the waiting signal input terminal receives the leveling electrical signal but does not receive the running electrical signal, the control unit controls the door opening simulation switch to close. S414, when the signal input terminal receives the light curtain electrical signal, the control unit controls the door closing simulation switch to close and controls the emergency stop simulation switch to open.

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