CN112591577B - Rescue method for machine-room-less elevator and related equipment and system - Google Patents

Abstract

The embodiment of the invention discloses a rescue method of a machine room free elevator, and related equipment and a system, which relate to the technical field of elevators, and the rescue method of the machine room free elevator comprises the following steps: entering an elevator rescue mode according to a rescue signal generated by a rescue switch; determining the sliding information of the elevator according to the collected host encoder signals based on the elevator rescue mode; and transmitting the slide information to an out-of-hall maintenance board, wherein the out-of-hall maintenance board is used for displaying the slide speed and the slide direction carried in the slide information. The embodiment of the invention is convenient for rescue workers to position the position of the elevator car in the rescue process, and improves the rescue efficiency and the rescue safety of the elevator.

Description

Rescue method for machine-room-less elevator and related equipment and system

Technical Field

The invention relates to the technical field of elevators, in particular to a rescue method of a machine room free elevator, and related equipment and a system.

Background

With the rapid development of elevator technology, the development of the elevator industry has shifted from past organic elevators to machine room-less elevators. A machine room-less elevator is an elevator without a separate control machine room.

Currently, a traction machine of a machine room-less elevator is installed in a hoistway. When the commercial power is cut off or people are trapped in a fault, the electric control is generally used for opening the brake of the traction machine to rotate the traction wheel, so that the elevator car moves downwards or upwards, and in order to rescue the trapped people, the elevator car needs to move to a door area. The rescue workers observe the running condition of the main machine generally by observing the running condition of the main machine through an observation window or a camera outside a top hall, and indicate whether the elevator is in a flat-bed position through an indicator light, and when the elevator slides to reach the flat-bed area, the door can be opened to save people. However, in the existing elevator rescue method, the elevator is moved downwards or upwards by using the gravity of the elevator car or the counterweight, when a rescue worker needs to observe the running direction of the main machine by using an observation window or a camera and confirm a leveling signal by using an indicator light, sometimes, the secondary damage is easily caused because various factors cannot be clearly distinguished and the moving speed of the elevator car cannot be controlled and controlled.

Disclosure of Invention

In view of this, embodiments of the present invention provide a rescue method for a machine-roomless elevator, and related devices and systems, so as to provide a safety guarantee for rescue of a machine-roomless elevator and improve elevator safety.

In a first aspect, an embodiment of the present invention provides a rescue method for a machine-roomless elevator, including: entering an elevator rescue mode according to a rescue signal generated by a rescue switch; determining the sliding information of the elevator according to the collected host encoder signals based on the elevator rescue mode; and transmitting the slide information to an out-of-hall maintenance board, wherein the out-of-hall maintenance board is used for displaying the slide speed and the slide direction carried in the slide information.

Optionally, the determining the elevator sliding information of the elevator according to the collected signal of the encoder of the host machine includes: collecting a signal of a host encoder; calculating the real-time sliding speed of the elevator based on the host encoder signal; and determining the elevator sliding information of the elevator based on the real-time elevator sliding speed of the elevator, wherein the elevator sliding information comprises the elevator sliding speed and the elevator sliding direction.

Optionally, the method further includes: monitoring whether the real-time sliding speed of the elevator is greater than a preset speed threshold value or not; and if the real-time elevator sliding speed of the elevator is greater than a preset speed threshold value, controlling a relay to automatically switch a brake release loop.

Optionally, the control relay automatic switch open loop includes:

when the real-time elevator sliding speed of the elevator is greater than a preset speed threshold, controlling a normally closed contact of the relay to be disconnected so as to disconnect the output of a rescue loop and reduce the real-time elevator sliding speed of the elevator;

when the real-time sliding speed of the elevator is reduced to the preset speed threshold value, determining the speed reduction duration;

and if the deceleration duration time reaches a preset duration threshold, controlling a normally closed contact of the relay to be closed so as to recover the output of the rescue loop.

Optionally, the control relay automatic switch release return circuit still includes:

recording the continuous overspeed times of the elevator in preset time;

and if the continuous overspeed times exceed a preset time threshold, controlling the on-off of the relay according to a preset switching frequency until the elevator rescue mode is exited.

Optionally, the rescue method is applied to an elevator control panel, the rescue signal is a signal generated by closing the rescue switch, and the rescue method further includes:

when a recovery signal generated by the rescue switch is detected, the elevator rescue mode is exited;

when the communication with the hall outside overhaul panel is detected to be abnormal, the signal state before the communication with the hall outside overhaul panel is detected to be abnormal is kept, and communication abnormal fault information is output until the communication is recovered to be normal.

Optionally, the entering of the rescue mode into the elevator rescue mode according to the rescue signal generated by the rescue switch includes:

when a rescue signal generated by a rescue switch is monitored, whether the elevator is powered off is detected;

if the elevator is powered off, entering an elevator rescue mode; otherwise, generating elevator fault information and entering the elevator rescue mode.

In a second aspect, an embodiment of the present invention further provides another rescue method for an elevator without a machine room, including:

receiving sliding information sent by an elevator control panel, wherein the sliding information is information determined by the elevator control panel based on an elevator rescue mode according to collected host encoder signals, the elevator rescue mode is a mode entering according to rescue signals, and the rescue signals are signals generated by a rescue switch;

and displaying according to the sliding speed and the sliding direction carried in the sliding information.

Optionally, the rescue method is applied to an out-of-hall access panel of an elevator, and before displaying according to the speed and direction of the elevator carried in the elevator sliding information, the method further includes: entering a rescue display mode when the rescue signal is detected; and after entering the rescue display mode, controlling the buzzer to sound according to the signal of the leveling sensor. The displaying according to the sliding speed and the sliding direction carried in the sliding information comprises the following steps: and extracting the elevator sliding speed and the elevator sliding direction from the elevator sliding information, determining the floor information of the elevator car according to the elevator sliding speed, the elevator sliding speed and the flat sensor signal, and displaying the floor information, the elevator sliding direction and/or the elevator sliding speed.

Optionally, the rescue method for the elevator without the machine room further includes: when the communication with the elevator control panel is detected to be abnormal, communication abnormal fault information is displayed, and on-off of a relay is controlled according to a preset switching frequency based on the rescue signal so as to automatically switch a brake release loop.

In a third aspect, an embodiment of the present invention further provides an elevator control panel, including: a processor and a memory; the memory has stored therein at least one instruction, which is executed by the processor, to cause the elevator control board to execute the rescue method of a machineroom-less elevator according to the first aspect.

In a fourth aspect, an embodiment of the present invention further provides an elevator hall access panel, including: a processor and a memory; the memory has stored therein at least one instruction, which is executed by the processor, to cause an out-of-hall service panel of the elevator to perform the rescue method of the machine room less elevator according to the second aspect.

In a fifth aspect, an embodiment of the present invention further provides a rescue system for an elevator without a machine room, including: an elevator control panel, an out-of-hall access panel and a backup power supply; the elevator control panel is in communication connection with the hall outside access panel and used for entering an elevator rescue mode according to a rescue signal generated by a rescue switch, determining elevator sliding information of an elevator according to an acquired host encoder signal based on the elevator rescue mode and transmitting the elevator sliding information to the hall outside access panel; the hall maintenance board is used for receiving the sliding information sent by the elevator control board and displaying according to the sliding speed and the sliding direction carried in the sliding information; and the backup power supply provides a working power supply for the elevator control panel and the hall outside service panel.

According to the embodiment of the invention, the elevator sliding information of the elevator is transmitted to the hall outside access panel, so that the hall outside access panel can display according to the elevator sliding speed and the elevator sliding direction carried in the elevator sliding information, and therefore, a rescuer can determine the moving speed and direction of the elevator car through the display of the hall outside access panel, the problem that secondary damage is easily caused due to the fact that the moving speed of the car cannot be controlled and controlled in the elevator rescue process in the prior art is solved, the rescuer can conveniently position the position of the elevator car in the rescue process, and rescue efficiency is improved.

Drawings

Fig. 1 is a flow chart showing steps of a rescue method for a machine-roomless elevator according to an embodiment of the present invention;

fig. 2 is a schematic diagram of the architecture of an elevator rescue system in an alternative example of the invention;

fig. 3 is a flow chart of the steps of a rescue method for a machineroom-less elevator in an alternative embodiment of the invention;

fig. 4 is a flow chart of the steps of another rescue method for a machine room-less elevator in the embodiment of the invention.

Detailed Description

The present invention will be described in further detail with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not to be construed as limiting the invention. It should be further noted that, for the convenience of description, only some structures related to the present invention are shown in the drawings, not all of them.

In order to save the trapped people in the elevator without machine room, a rescue auxiliary power device is usually added in the elevator shaft, so that the elevator car can be controlled to move up and down by the rescue auxiliary power device during rescue, and the elevator car can move to the door area to open the door to realize rescue. However, the rescue auxiliary power device added in the elevator shaft can increase the shaft space requirement of the elevator without a machine room, the layout of the elevator shaft is influenced, the position of the elevator car cannot be visually known in the rescue process, and the rescue efficiency is influenced.

The embodiment of the invention provides a novel rescue method of a machine-room-less elevator, which enters an elevator rescue mode according to a rescue signal generated by a rescue switch and transmits elevator sliding information of the elevator to an outside-hall maintenance board, so that the outside-hall maintenance board can display according to the elevator sliding speed and the elevator sliding direction carried in the elevator sliding information, and therefore, rescue workers can determine the moving speed and the moving direction of an elevator car through the display of the outside-hall maintenance board, the rescue workers can conveniently position the elevator car in the rescue process, the rescue efficiency is improved, an additional auxiliary power device is not required to be added in an elevator hoistway, the safety of elevator rescue is improved while the layout of the hoistway is not influenced, and the hoistway space is saved.

Example one

Referring to fig. 1, a flow chart of steps of a rescue method for a machine room free elevator provided by an embodiment of the invention is shown. The embodiment can be applied to the rescue situation of the elevator without the machine room, and as shown in fig. 1, the rescue of the elevator without the machine room specifically comprises the following steps:

and step 110, entering an elevator rescue mode according to a rescue signal generated by the rescue switch.

Specifically, when the elevator detects that people are trapped, the rescue personnel can operate the backup power source which is switched into by the rescue switch to supply power to the elevator rescue system, namely, a corresponding rescue signal can be generated when the rescue switch is closed. When the rescue signal generated by the rescue switch is detected, the embodiment of the invention can enter an elevator rescue mode based on the rescue signal, so that all elevator calls are cancelled and the elevator can not normally run. It should be noted that, after entering the elevator rescue mode, the elevator can no longer operate normally, and if the elevator can not respond to the elevator calling request from the user, the elevator can not be recovered to be used normally until exiting the elevator rescue mode.

And step 120, determining the sliding information of the elevator according to the collected host encoder signals based on the elevator rescue mode.

Specifically, after entering the elevator rescue mode, the embodiment of the invention can acquire the host encoder signal and calculate the real-time elevator sliding speed through a correlation algorithm based on the acquired host encoder signal, so that the corresponding elevator sliding information can be generated based on the calculated real-time elevator sliding speed, namely the elevator sliding information of the elevator is determined. The main machine encoder signal may include a signal generated by an encoder of the elevator main machine, such as a pulse signal output by the elevator main machine encoder, and may be specifically used to determine the running speed and direction of the elevator, and the embodiment of the present invention is not particularly limited thereto.

And step 130, transmitting the slide information to an out-of-hall maintenance board, wherein the out-of-hall maintenance board is used for displaying according to the slide speed and the slide direction carried in the slide information.

Specifically, after the information of the elevator sliding is determined, the information of the elevator sliding can be transmitted to the hall outside access panel through communication with the hall outside access panel of the elevator, so that the hall outside access panel can display according to the speed and the direction of the elevator sliding carried in the information of the elevator sliding, the speed and the direction of movement of the elevator car can be determined through the display of the hall outside access panel by rescue workers, the rescue workers can conveniently position the elevator car in the rescue process, and the rescue efficiency is improved.

Therefore, after the rescue signal generated by the rescue switch enters the elevator rescue mode, the elevator sliding information of the elevator is determined according to the host encoder signal, and is transmitted to the hall maintenance board, so that the hall maintenance board can display according to the sliding speed and the sliding direction carried in the sliding information, and therefore, the speed and the direction of the movement of the elevator car can be determined through the display of the hall maintenance board by a rescue worker, the problem that the speed of the car movement cannot be controlled and controlled in the elevator rescue process in the prior art is solved, the problem that the speed of the car movement cannot be controlled and is easy to cause secondary damage in the elevator rescue process can be avoided, the safety of elevator rescue is improved, and the position of the elevator car is conveniently located by the rescue worker through the display of the hall maintenance board, the rescue efficiency is improved.

In actual processing, the rescue method of the elevator without the machine room provided by the embodiment of the invention can apply the elevator control panel, so that the elevator control panel enters an elevator rescue mode when detecting a rescue signal generated by the rescue switch, determines the elevator sliding information of the elevator according to the collected host encoder signal, transmits the elevator sliding information of the elevator to the detection panel outside the hall through communication with the detection panel outside the hall of the elevator, and enables the detection panel outside the hall to display according to the elevator sliding information of the elevator, so that rescuers can determine the elevator sliding condition of the elevator according to the display of the detection panel outside the hall, the aim of visually displaying the elevator sliding condition is achieved, and the rescue efficiency of the elevator is improved. The elevator sliding information of the elevator may be used to determine the elevator sliding conditions of the elevator, such as the sliding speed, the sliding direction, and the like of the elevator, which is not particularly limited in this embodiment of the present invention.

On the basis of the foregoing embodiment, optionally, the determining of the elevator sliding information of the elevator according to the collected host encoder signal in the embodiment of the present invention may specifically include: collecting a host encoder signal; calculating the real-time sliding speed of the elevator based on the host encoder signal; and determining the elevator sliding information of the elevator based on the real-time elevator sliding speed of the elevator, wherein the elevator sliding information comprises the elevator sliding speed and the elevator sliding direction.

As an example of the present invention, as shown in fig. 2, after the rescue personnel operates the closed rescue switch, the backup power source is put into use to provide working power source for the elevator control panel, the hall maintenance panel and the main machine brake, so as to ensure the normal operation of the rescue system. Specifically, a rescue signal is generated after the rescue switch is closed and transmitted to the elevator control panel, so that the elevator control panel detects the rescue signal and switches the elevator control system to a rescue mode, rescue personnel can switch on a rescue loop to implement rescue by operating the rescue control switch 21 and the elevator emergency stop switch 23, and the elevator is in a forbidden operation mode at the moment.

When the elevator is in rescue movement, the main machine star sealing device configured by the control system enables the elevator car to move slowly and stably. Specifically, after monitoring a rescue signal generated by a rescue switch, an elevator control panel enters a rescue mode to acquire a signal generated by a host encoder PG in the rescue mode, namely, a host encoder signal is acquired during rescue, so that the real-time elevator sliding speed can be calculated through a correlation algorithm based on the host encoder signal, namely, the real-time elevator sliding speed is calculated based on the host encoder signal, the elevator sliding information is determined based on the real-time elevator sliding speed, the elevator sliding information can be transmitted to an outside-hall maintenance panel for display through communication with the outside-hall maintenance panel, and meanwhile, the on-off of a relay 22 can be controlled according to different rescue speeds to automatically switch a brake releasing loop, so that the safe implementation of elevator rescue is ensured.

It should be noted that the main machine star sealing device may be a star sealing device configured by the control system, for example, the star sealing device may be a contactor, a normally closed contact of the contactor may be connected with a three-phase driving terminal of the main machine, and when the elevator operates normally, the contact of the contactor is disconnected, so that the main machine operates normally; and when elevator rescue, the attraction contactor contact is in short circuit with the three-phase input terminal of the host, so that reverse torque can be generated when the host rotates, the running speed of the host can be limited, and the rescue speed is slow and stable.

Further, the rescue method for the elevator without the machine room provided by the embodiment of the invention further comprises the following steps: monitoring whether the real-time sliding speed of the elevator is greater than a preset speed threshold value or not; and if the real-time elevator sliding speed of the elevator is greater than a preset speed threshold value, controlling a relay to automatically switch a brake release loop. Specifically, after the elevator rescue mode is entered, the real-time elevator sliding speed can be calculated by acquiring the signals of the encoder of the host, and can be compared with the preset speed threshold value so as to monitor whether the real-time elevator sliding speed of the elevator is greater than the preset speed threshold value. If the real-time elevator sliding speed is higher than the preset speed threshold, a relay in the rescue loop can be controlled, namely when the real-time elevator sliding speed is higher than the preset speed threshold, the relay in the rescue loop is controlled to be switched off to switch off the output of the rescue loop, so that a brake is clasped to reduce the real-time elevator sliding speed, the output of the rescue loop is recovered until the real-time elevator sliding speed is reduced to the preset speed threshold, and the overspeed of the elevator can be prevented.

It should be noted that the relay in the rescue circuit can be used as a rescue overspeed relay, for example, the relay contact can be a normally closed contact, when the rescue is overspeed, the relay contact can be automatically controlled to be disconnected, and can be controlled by the elevator control panel, so that the problem that the moving speed of the car cannot be controlled in the elevator rescue process is solved, and the elevator rescue safety is ensured.

In the actual processing, the rescue signal can be a signal generated by closing the rescue switch; after the rescue switch is turned off, a corresponding recovery signal can be generated, so that the elevator control panel exits the rescue mode based on the recovery signal, the elevator can normally run, and the elevator riding requirements of users can be met if all elevator calls can be responded. Further, the rescue method for the elevator without the machine room provided by the embodiment of the invention can further comprise the following steps: and when a recovery signal generated by the rescue switch is detected, the elevator rescue mode is exited. The recovery signal generated by the rescue switch may be a signal generated when the rescue switch is turned off, and for example, when the rescue signal generated when the rescue switch is turned on is a high level signal "1", the recovery signal generated when the rescue switch is turned off may be a low level signal "0", which is not specifically limited in this embodiment of the present invention.

Specifically, the embodiment of the invention can generate a corresponding recovery signal after the rescue switch is turned off, so that the elevator control panel can detect the recovery signal. After the elevator control panel detects the recovery signal generated by the rescue switch, the rescue mode can be exited based on the recovery signal, so that the elevator can normally run, and the elevator taking requirements of users can be met if all elevators can be called correspondingly.

Referring to fig. 3, a flow chart of the steps of a rescue method for a machineroom-less elevator in an alternative embodiment of the present invention is shown. The rescue method of the elevator without the machine room can be applied to an elevator control panel, and specifically comprises the following steps:

and step 310, entering an elevator rescue mode according to the rescue signal generated by the rescue switch.

Specifically, after the rescue signal is generated after the rescue switch is turned on, the elevator control board may enter a rescue mode based on the rescue signal and then perform step 320.

In the actual processing, the elevator rescue is usually carried out under the condition of elevator power failure, if the rescue signal is effective due to other reasons or abnormity when an elevator system is electrified or operates, the elevator fault is usually detected at the moment, the elevator can be automatically controlled to be stopped and opened nearby, all calls of the elevator are cancelled, the elevator can not be operated any more, normal use is recovered until the rescue signal is recovered, and therefore accidents such as people trapping and the like are avoided. Further, the entering of the elevator rescue mode according to the rescue signal generated by the rescue switch in the embodiment of the present invention may specifically include: when a rescue signal generated by a rescue switch is monitored, whether the elevator is powered off is detected; if the elevator is powered off, entering an elevator rescue mode; otherwise, generating elevator fault information and entering the elevator rescue mode.

For example, in the running process of the elevator, the rescue signal is suddenly effective, the elevator control panel serving as the master control can detect the rescue signal and detect whether the elevator is powered off or not according to the rescue signal so as to determine whether the elevator has a rescue signal fault or not; if the elevator is not powered off, the situation that the elevator has a rescue signal fault can be determined, then corresponding elevator fault information is generated, so that elevator maintenance personnel are informed of overhauling through the elevator fault information, at the moment, the master control can automatically control the elevator to stop and open the door nearby, all calls of the elevator can be cancelled, the elevator can not be operated any more, and normal use can not be recovered until the rescue signal is recovered; if the elevator is powered off, the current elevator is determined not to have the rescue signal fault, and the method is directly switched to the rescue mode to execute the subsequent steps in the rescue mode, namely the steps 320 to 350.

Certainly, if the elevator is in a standby state, the rescue signal is suddenly effective, namely the rescue switch is suddenly closed to generate the rescue signal in the standby process of the elevator, the embodiment of the invention can also detect the elevator fault, if the C-level fault of the elevator is detected, the elevator can be automatically controlled to be stopped nearby and opened by the elevator control panel, all calls of the elevator can be cancelled, so that the elevator can not be operated any more, and the normal use of the elevator can not be recovered until the rescue signal is recovered.

Step 320, collecting the host encoder signal.

And step 330, calculating the real-time sliding speed of the elevator based on the host encoder signal.

Specifically, after the elevator control panel in the implementation of the invention enters the rescue mode, the host encoder signal output by the encoder can be collected, so that the real-time elevator sliding speed in the rescue process can be calculated through a related algorithm according to the host encoder signal, and the purpose of monitoring the elevator sliding speed in the rescue process can be achieved.

Furthermore, the elevator control board in the embodiment of the invention can judge whether the real-time elevator sliding speed of the elevator is greater than a preset speed threshold value after calculating the real-time elevator sliding speed of the elevator, so as to monitor whether the real-time elevator sliding speed of the elevator is greater than the preset speed threshold value; if the real-time elevator sliding speed is larger than the preset speed threshold, the relay can be controlled to automatically switch the brake release loop until the real-time elevator sliding speed of the elevator is reduced to the preset speed threshold or the real-time elevator sliding speed of the elevator is reduced to be smaller than the preset speed threshold.

In the actual processing, the elevator control panel can record the time that the real-time sliding speed of the elevator is reduced to a value not exceeding a preset speed threshold value, so that the normally closed contact of the relay is controlled to be closed after the speed reduction duration time exceeds the preset time threshold value, and the output of the rescue loop is recovered. Optionally, the controlling the relay to automatically switch the brake release loop according to the embodiment of the present invention may specifically include: when the real-time elevator sliding speed of the elevator is greater than a preset speed threshold, controlling a normally closed contact of the relay to be disconnected so as to disconnect the output of a rescue loop and reduce the real-time elevator sliding speed of the elevator; when the real-time sliding speed of the elevator is reduced to the preset speed threshold, determining the speed reduction duration; and if the deceleration duration time reaches a preset duration threshold, controlling a normally closed contact of the relay to be closed so as to recover the output of the rescue loop. The deceleration duration time can be the time for which the real-time elevator sliding speed of the elevator is reduced to be not more than a preset speed threshold value.

As an example of the present invention, when the maximum speed of the elevator is set to T meters per second, i.e. when the preset speed threshold is T meters per second (m/s), the elevator control board, when monitoring that the real-time elevator speed is greater than the preset speed threshold Tm/s, as shown in fig. 2, may control the normally closed contact of the relay 22 to open, so as to disconnect the rescue loop output, reduce the real-time elevator speed, and may record the time after the real-time elevator speed is reduced to the preset speed threshold Tm/s, e.g. after the real-time elevator speed is less than the preset speed threshold Tm/s, and may determine the recorded time as the deceleration duration to determine whether the deceleration duration is greater than the preset duration threshold, so as to control the normally closed contact of the relay 22 to close when the deceleration duration reaches the preset duration threshold, the rescue loop output is recovered, the purpose of automatically switching the brake release loop is achieved, the elevator rescue speed overspeed protection is realized, and the elevator rescue safety is ensured.

Optionally, the controlling the relay to automatically switch the brake release loop in the embodiment of the present invention may further include: recording the continuous overspeed times of the elevator in preset time; and if the continuous overspeed times exceed a preset time threshold, controlling the on-off of the relay according to a preset switching frequency until the elevator rescue mode is exited. The preset number threshold may be a maximum number threshold that allows overspeed to occur within a preset time. For example, under the condition that the threshold of the maximum number of times of overspeed occurrence permission within the preset time Y is (X-1) times and the preset switching frequency is switched once every 2 seconds, in the process of rescue implementation, when the elevator rescue overspeed continues for X times within the time Y, namely when the recorded number of times of continuous overspeed of the elevator within the preset time exceeds the threshold of the number of times, the elevator control board can automatically control the relay to switch on and off according to the frequency of 2 seconds on and 2 seconds off, so as to prevent overspeed until the rescue mode exits, and further achieve the purpose of rescue speed overspeed protection. Wherein X is an integer greater than 1.

And 340, determining elevator sliding information of the elevator based on the real-time elevator sliding speed of the elevator, wherein the elevator sliding information comprises the elevator sliding speed and the elevator sliding direction.

Specifically, after the real-time elevator sliding speed of the elevator is calculated, the elevator discharging sliding direction can be determined by adopting the speed direction of the real-time elevator sliding speed of the elevator, for example, when the speed direction of the real-time elevator sliding speed of the elevator is downward, the downward moving direction can be determined as the elevator sliding direction, and then the real-time elevator sliding speed and the elevator sliding direction of the elevator can be determined as the elevator sliding information, so that the real-time elevator sliding speed and the elevator sliding direction of the elevator can be transmitted to an out-of-hall maintenance board for displaying in the subsequent process.

And 350, transmitting the slide information to an out-of-hall maintenance board, wherein the out-of-hall maintenance board is used for displaying according to the slide speed and the slide direction carried in the slide information.

In the embodiment of the invention, the elevator control panel can be in communication connection with the hall maintenance panel of the elevator, so that the information of the sliding can be transmitted to the hall maintenance panel in a communication mode based on the communication connection, and the hall maintenance panel can display the information of the sliding according to the sliding speed and the sliding direction carried in the information of the sliding after receiving the information of the sliding.

In the actual processing, the elevator control panel can detect whether the communication with the hall outside access panel is abnormal or not in order to ensure that the sliding information can be transmitted to the hall outside access panel, so that the corresponding communication abnormal information can be timely output when the communication is abnormal, and elevator maintenance personnel are reminded to maintain the communication abnormality. Optionally, the rescue method for an elevator without a machine room provided by the embodiment of the present invention may further include: and when the communication with the hall outside access panel is detected to be abnormal, keeping the signal state before the communication with the hall outside access panel is detected to be abnormal, and outputting the communication abnormal fault information until the communication is recovered to be normal.

Specifically, the elevator control panel in the embodiment of the present invention can determine whether the communication with the hall access panel is abnormal by monitoring the communication state with the hall access panel, and if the communication signal of the hall access panel is not detected within a certain time, the communication state with the hall access panel can be set to an abnormal state, so that the communication abnormality with the hall access panel can be determined based on the abnormal state. When the communication between the elevator control panel and the hall access panel is abnormal, namely when the elevator control panel detects the communication abnormality with the hall access panel, the elevator control panel can generate and output corresponding communication abnormal fault information, such as D-level fault information of the elevator, so as to inform elevator maintenance personnel to maintain the elevator; and the elevator control panel can preserve the signal state before unusual with the hall outside access panel communication automatically to lead to the elevator state to change and lead to the accident to take place when avoiding the communication unusual, resume normally until the communication, thereby ensure elevator safety.

And step 360, exiting the elevator rescue mode when the recovery signal generated by the rescue switch is detected.

For example, after the rescue personnel open the elevator door to rescue trapped people and finish rescue, the rescue switch can be opened, so that the rescue switch generates a corresponding recovery signal, and the elevator control panel can detect the recovery signal. Specifically, after the elevator control panel detects a recovery signal generated by the rescue switch, the elevator control panel can exit the elevator rescue mode based on the recovery signal to recover the normal operation of the elevator, so that the elevator can respond to an elevator calling request of a user and meet the elevator taking requirement of the user.

In summary, after entering an elevator rescue mode according to a rescue signal generated by a rescue switch, the embodiment of the invention calculates the real-time elevator sliding speed by acquiring a host encoder signal, achieves the purpose of monitoring the elevator sliding speed in the rescue process, and automatically switches a brake release loop by controlling a relay when the real-time elevator sliding speed exceeds a preset speed threshold value, so as to reduce the elevator sliding speed, realize the overspeed protection of the elevator rescue speed and ensure the elevator rescue safety.

Furthermore, the embodiment of the invention determines the elevator sliding information of the elevator through the calculated elevator real-time sliding speed, and transmits the elevator sliding information to the hall outside access panel, so that the hall outside access panel can display according to the elevator sliding speed and the elevator sliding direction carried in the elevator sliding information, and therefore, a rescuer can determine the moving speed and the moving direction of the elevator car through the display of the hall outside access panel, the problem that secondary damage is easily caused due to the fact that the moving speed of the elevator car cannot be controlled and controlled in the elevator rescue process in the prior art is solved, the rescuer can conveniently position the elevator car in the rescue process, and rescue efficiency is improved.

Example two

On the basis of the embodiment, the embodiment of the invention also provides another rescue method for the elevator without the machine room, so that the hall maintenance board can display according to the elevator sliding information sent by the elevator main control board, the rescue workers can determine the elevator sliding condition of the elevator, the rescue workers can conveniently position the position of the elevator car, and the rescue efficiency of the elevator is improved.

Referring to fig. 4, a flow chart of steps of another rescue method for a machine roomless elevator in the embodiment of the invention is shown. Specifically, the rescue method of the elevator without the machine room comprises the following steps:

and step 410, receiving the elevator slipping information sent by the elevator control board.

The elevator sliding information is information determined by the elevator control panel based on an elevator rescue mode according to collected host encoder signals, the elevator rescue mode is a mode entering according to rescue signals, and the rescue signals are signals generated by a rescue switch.

And 420, displaying according to the speed and the direction of the sliding ladder carried in the sliding ladder information.

Specifically, after receiving the sliding information sent by the elevator control board, the embodiment can extract the sliding speed and the sliding direction carried in the sliding information by analyzing the sliding information, and can display according to the extracted sliding speed and the extracted sliding direction to display the sliding condition of the elevator, so that a rescuer can conveniently position the position of the elevator car according to the sliding condition in the rescue process, and improve the rescue safety and efficiency of the elevator.

In actual processing, another kind of rescue method of no computer lab elevator that this embodiment provided specifically can be applied to the board outside the hall of elevator, make the board outside the hall show according to the swift current ladder information of elevator control panel, if can show through the charactron that sets up on the board outside the hall, make the rescue personnel can show the swift current ladder condition of confirming the elevator according to the data pipe of board outside the hall, if the swift current ladder speed of confirming the elevator, the direction, elevator car position etc. be convenient for rescue personnel to rescue the stranded personnel of elevator, improve elevator rescue efficiency.

Further, the rescue method for the elevator without the machine room of the embodiment is applied to an out-of-hall access panel of the elevator, and before displaying according to the speed and the direction of the elevator sliding carried in the elevator sliding information, the rescue method may further include: entering a rescue display mode when the rescue signal is detected; and after entering the rescue display mode, controlling a buzzer to sound according to the signal of the leveling sensor.

Specifically, when the rescue switch is closed to generate a rescue signal, the elevator control panel enters a rescue mode after receiving the rescue signal generated by the rescue switch, and meanwhile, the hall access panel can detect the rescue signal and can be switched to a rescue display mode based on the rescue signal so as to display the rescue display mode according to the elevator sliding information sent by the elevator control panel. Optionally, the displaying according to the carriage speed and the carriage direction carried in the carriage information may specifically include: and extracting the elevator sliding speed and the elevator sliding direction from the elevator sliding information, determining the floor information of the elevator car according to the elevator sliding speed, the elevator sliding speed and the flat sensor signal, and displaying the floor information, the elevator sliding direction and/or the elevator sliding speed. The floor information of the elevator car can indicate the floor where the elevator car is located; the floor sensor signal can be a signal generated by a sensor comprising a sensor arranged in each floor level and can be used in particular for determining whether the elevator car has reached the floor level and in particular to which floor the elevator car has reached.

For example, in the process of elevator rescue, after the hall maintenance board of the elevator is switched to the rescue display mode, the elevator sliding speed and the elevator sliding method can be extracted from the received elevator sliding information, the flat sensor signal can be obtained, whether the elevator car runs to the flat zone or not can be determined according to the flat sensor signal, so that the buzzer can be controlled to sound when the elevator car runs in a non-flat zone, the buzzer can be controlled to turn off when the elevator car runs in the flat zone, so that the rescue worker can be reminded to open the door to rescue trapped people when the elevator car is in the flat zone, meanwhile, the floor information of the elevator car can be determined according to the elevator sliding speed, the sliding speed and the flat sensor signal, the floor information of the elevator car can be displayed according to the floor information of the elevator, the floor information of the elevator car can be displayed through a nixie.g. a nixie tube, the position of the elevator car can be visually displayed, so that the rescue worker can determine the floor where the elevator car is located in the rescue process, rescue workers can conveniently rescue trapped people, the time that the trapped people are trapped in the elevator is shortened, and the elevator rescue efficiency is improved. Certainly, the hall maintenance board of the elevator can also display the sliding direction and the sliding direction of the elevator through the nixie tubes, for example, the sliding direction of the elevator can be displayed through 1 nixie tube, and the sliding speed of the elevator can be displayed through two nixie tubes, so that rescue workers can predict the elevator floors reached by the elevator car in the predicted rescue time, and the rescue efficiency of the elevator is further improved.

Of course, the hall detection board of the elevator may also display in other display manners besides using a nixie tube, for example, the sliding speed and direction of the elevator and/or the position of the elevator car may be displayed by using a liquid crystal display panel, which is not particularly limited in this embodiment of the present invention.

Optionally, the rescue method for the elevator without the machine room provided by the embodiment of the present invention may further include: and when the communication with the elevator control panel is detected to be abnormal, displaying abnormal communication fault information, and controlling the on-off of a relay according to a preset switching frequency based on the rescue signal so as to automatically switch a brake release loop.

Specifically, when the communication between the hall access panel and the elevator control panel is abnormal in the embodiment of the invention, the hall access panel can detect the communication abnormality which can be communicated with the elevator control panel, and can generate communication abnormality information based on the communication abnormality so as to display according to the communication abnormality information, for example, a nixie tube display "-" on the hall access panel can prompt that the communication abnormality occurs at the moment, so that an elevator maintenance worker can be reminded of maintaining according to the communication abnormality; if the rescue signal is effective at the moment, namely the rescue signal generated by the rescue switch is detected in the abnormal communication process with the elevator control panel, the on-off of the relay can be automatically controlled according to the preset switching frequency, if the above example is combined, the on-off of the relay 22 is controlled according to the frequency of 2 seconds of on-off and 2 seconds of off-off, so that the brake release loop is automatically switched, the rescue speed is prevented from being overspeed, the secondary damage caused by the overspeed of the rescue speed can be further avoided, and the rescue safety of the elevator is ensured.

It should be noted that, for simplicity of description, the method embodiments are described as a series of acts or combination of acts, but those skilled in the art will recognize that the present invention is not limited by the illustrated order of acts, as some steps may occur in other orders or concurrently in accordance with the embodiments of the present invention.

EXAMPLE III

On the basis of the above embodiment, the embodiment of the present invention further provides a rescue system for an elevator without a machine room, including: an elevator control panel, an out-of-hall access panel and a backup power supply; the elevator control panel is in communication connection with the hall outside access panel and used for entering an elevator rescue mode according to a rescue signal generated by a rescue switch, determining elevator sliding information of an elevator according to an acquired host encoder signal based on the elevator rescue mode and transmitting the elevator sliding information to the hall outside access panel; the hall maintenance board is used for receiving the sliding information sent by the elevator control board and displaying according to the sliding speed and the sliding direction carried in the sliding information; and the backup power supply provides a working power supply for the elevator control panel and the hall outside service panel.

In the actual processing, an elevator control panel for controlling the operation of the elevator can be arranged in a control cabinet, as shown in fig. 2, and can be connected with a host encoder of the elevator, host encoder signals can be collected during rescue, the real-time elevator sliding speed can be calculated through a related algorithm, the operation speed and direction during elevator rescue are transmitted to an outside-hall access panel as elevator sliding information through communication with the outside-hall access panel for displaying, and meanwhile, the on-off of a relay 22 can be controlled according to different rescue speeds to automatically switch a brake releasing loop, so that the safe implementation of elevator rescue is ensured.

The hall outer access panel arranged outside the hall in the hall access cabinet can determine the sliding direction and speed of the elevator during rescue according to the sliding information after receiving the sliding information of the elevator control panel, and can display the sliding direction and speed of the elevator according to the determined sliding direction and speed, if the sliding direction and speed, the elevator landing, the leveling signal and the like of the elevator during rescue are displayed by combining the elevator leveling sensor signal, so that necessary information is provided for rescue workers to accurately position the elevator car, and the rescue efficiency is improved.

For example, the access panel outside the hall can show elevator traffic direction through 1 charactron, show the swift current ladder direction of elevator in the rescue process through 1 charactron promptly, make things convenient for the rescuer to look up the traffic direction before the elevator is stranded, and two charactrons of accessible show elevator rescue operating speed, show the real-time swift current ladder speed of elevator in the rescue process through 2 charactrons promptly, and can remind the flat bed signal through bee calling organ, if control bee calling organ to sound when the elevator operation is in the non-flat bed zone time, control bee calling organ to go out when the elevator operation is in the flat bed zone time, reach the flat bed zone with reminding rescue personnel elevator car, be convenient for rescue personnel to open the door and rescue personnel when elevator car reaches the flat bed zone time, improve elevator rescue efficiency and elevator rescue security.

Certainly, the access panel outside the hall also can show the floor that elevator car located through the charactron, if can show the floor that elevator car located through 2 charactrons, be convenient for look up the floor that the elevator was stranded the people before, for the rescue personnel accurate positioning elevator car position provides necessary information, improves rescue efficiency, and this embodiment does not do specific restriction to this.

In addition, the rescue system of the elevator without the machine room provided by the embodiment of the invention can comprise: besides the elevator control panel, the hall access panel and the backup power supply, other devices may also be included, as shown in fig. 2, a rescue switch, a brake, and related components for rescue control, and the like, which is not particularly limited in this embodiment of the present invention. The related rescue control components may include a rescue control switch 21, a relay 23, an elevator emergency stop switch 23, and the like, which is not limited in this embodiment. It should be noted that the rescue control switch 21 may be a normally open switch control component inside the hall access panel, and is put into use during rescue, for example, when rescue control switch 21 is closed during rescue, the backup power supply may provide a working power supply for the brake; the relay 23 can be used as a rescue overspeed relay contact inside an out-of-hall access panel, can be automatically controlled to open when the rescue is overspeed, and can be controlled by the control panel.

Example four

On the basis of the embodiment, the embodiment of the invention also provides an elevator control panel. This elevator control panel includes: a processor and a memory; the memory stores at least one instruction, and the instruction is executed by the processor, so that the elevator control panel realizes the rescue method of the elevator without a machine room on the side of the elevator control panel in the method, namely, the steps of the rescue method of the elevator without a machine room in any one of the first embodiment.

In a particular implementation, an elevator control panel can include the following modules:

the rescue mode entering module is used for entering an elevator rescue mode according to a rescue signal generated by the rescue switch;

the elevator slipping information determining module is used for determining elevator slipping information of the elevator according to the collected host encoder signals based on the elevator rescue mode;

and the slide information transmission module is used for transmitting the slide information to an out-of-hall maintenance board, and the out-of-hall maintenance board is used for displaying the slide speed and the slide direction carried in the slide information according to the slide information.

In an alternative embodiment, the step information determining module may include the following sub-modules:

the acquisition sub-module is used for acquiring signals of a host encoder;

the calculation sub-module is used for calculating the real-time sliding speed of the elevator based on the host encoder signal;

and the determining submodule is used for determining the elevator sliding information of the elevator based on the real-time elevator sliding speed of the elevator, and the elevator sliding information comprises the elevator sliding speed and the elevator sliding direction.

Optionally, the elevator control panel in the embodiment of the present invention may further include the following modules:

the elevator sliding speed monitoring module is used for monitoring whether the real-time elevator sliding speed of the elevator is greater than a preset speed threshold value or not;

and the brake release loop switching module is used for controlling the relay to automatically switch the brake release loop when the real-time speed of the elevator sliding is greater than a preset speed threshold.

Optionally, the brake release loop switching module may include the following sub-modules:

the rescue loop disconnection submodule is used for controlling the normally closed contact of the relay to be disconnected when the real-time elevator sliding speed of the elevator is greater than a preset speed threshold value so as to disconnect the rescue loop output and reduce the real-time elevator sliding speed of the elevator;

the speed reduction duration determining submodule is used for determining the speed reduction duration after the real-time sliding speed of the elevator is reduced to the preset speed threshold;

and the rescue loop recovery submodule is used for controlling the normally closed contact of the relay to be closed when the deceleration duration reaches a preset duration threshold so as to recover the output of the rescue loop.

Optionally, the brake release loop switching module may further include the following sub-modules:

the overspeed frequency recording submodule is used for recording the continuous overspeed frequency of the elevator within the preset time;

and the control submodule is used for controlling the on-off of the relay according to a preset switching frequency when the continuous overspeed times exceed a preset time threshold value until the elevator rescue mode is exited.

Optionally, the rescue signal in the embodiment of the present invention is a signal generated by closing a rescue switch. The elevator control panel may further include the following modules:

the elevator rescue mode exit module is used for exiting the elevator rescue mode when a recovery signal generated by the rescue switch is detected;

and the communication abnormity module is used for keeping a signal state before the communication abnormity is detected outside the hall when the communication abnormity of the hall outside access panel is detected, and outputting communication abnormity fault information until the communication is recovered to be normal.

Optionally, the rescue mode entering module may include the following sub-modules:

the power-off detection submodule is used for detecting whether the elevator is powered off or not when a rescue signal generated by the rescue switch is monitored; if the elevator is powered off, triggering a rescue mode submodule to enter an elevator rescue mode; otherwise, triggering a fault information submodule to generate elevator fault information, and triggering a rescue mode submodule to enter the elevator rescue mode;

the fault information submodule is used for elevator fault information;

and the rescue mode submodule is used for entering the elevator rescue mode.

EXAMPLE five

Further, the embodiment of the invention also provides an elevator hall outer access panel. This hall of elevator overhauls board includes: a processor and a memory; the memory stores at least one instruction, and the instruction is executed by the processor, so that the hall outside service panel of the elevator realizes the method for implementing the rescue method of the elevator without the machine room on the hall outside service panel side, such as the step of implementing the rescue method of the elevator without the machine room described in any one of the second embodiment.

Optionally, the hall service panel in the embodiment of the present invention may include the following modules:

the elevator sliding information receiving module is used for receiving elevator sliding information sent by an elevator control board, the elevator sliding information is information determined by the elevator control board based on an elevator rescue mode according to collected host encoder signals, the elevator rescue mode is a mode entering according to rescue signals, and the rescue signals are signals generated by a rescue switch;

and the display module is used for displaying according to the sliding speed and the sliding direction carried in the sliding information.

Optionally, the hall access panel may further include the following modules:

a rescue display mode entering module for entering a rescue display mode when the rescue signal is detected;

the buzzer control module is used for controlling the buzzer to sound according to the signal of the leveling sensor after entering the rescue display mode;

the display module can be specifically used for extracting the elevator sliding speed and the elevator sliding direction from the elevator sliding information, determining the floor information of the elevator car according to the elevator sliding speed, the elevator sliding speed and the floor sensor signal, and displaying the floor information, the elevator sliding direction and/or the elevator sliding speed.

Optionally, the hall access panel may further include a communication abnormality detection module and an automatic control module. The communication abnormity detection module can be used for triggering the display module to display communication abnormity fault information and triggering the automatic control module to control the on-off of the relay according to a preset switching frequency based on the rescue signal when the communication abnormity with the elevator control panel is detected; the automatic control module controls the on-off of the relay according to a preset switching frequency based on the rescue signal so as to automatically switch a brake release loop; the display module is also used for displaying communication abnormal fault information.

It should be noted that, in this specification, each embodiment is described in a progressive manner, and each embodiment focuses on differences from other embodiments, and portions that are the same as and similar to each other in each embodiment may be referred to.

From the above description of the embodiments, it is obvious for those skilled in the art that the present invention can be implemented by software and necessary general hardware, and certainly, can also be implemented by hardware, but the former is a better embodiment in many cases. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, and the computer software product may be stored in a computer-readable storage medium, such as a floppy disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a FLASH Memory (FLASH), a hard disk or an optical disk of a computer, and includes several instructions to enable a computer device (which may be a robot, a personal computer, a server, or a network device) to execute the elevator monitoring method according to any embodiment of the present invention.

It should be noted that, in the above embodiments of the elevator control panel and the hall access panel of the elevator, the units and modules included in the embodiments are only divided according to the functional logic, but are not limited to the above division, as long as the corresponding functions can be implemented; in addition, specific names of the functional units are only for convenience of distinguishing from each other, and are not used for limiting the protection scope of the present invention. It should be understood that portions of the present invention may be implemented in hardware, software, firmware, or a combination thereof. In the above embodiments, various steps or methods may be implemented in software or firmware stored in a memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, any one or combination of the following techniques, which are known in the art, may be used: a discrete logic circuit having a logic gate circuit for implementing a logic function on a data signal, an application specific integrated circuit having an appropriate combinational logic gate circuit, a Programmable Gate Array (PGA), a Field Programmable Gate Array (FPGA), or the like.

In the description of the specification, reference to the description of "one embodiment," "some embodiments," "an example," "a specific example," or "some examples" or the like means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

It is to be noted that the foregoing description is only exemplary of the invention and that the principles of the technology may be employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in some detail by the above embodiments, the invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the invention, and the scope of the invention is determined by the scope of the appended claims.

Claims (11)

1. A rescue method for an elevator without a machine room, comprising:

entering an elevator rescue mode according to a rescue signal generated by a rescue switch;

collecting a host encoder signal based on the elevator rescue mode;

calculating the real-time sliding speed of the elevator based on the host encoder signal;

determining the elevator sliding information of the elevator based on the real-time elevator sliding speed of the elevator, wherein the elevator sliding information comprises the elevator sliding speed and the elevator sliding direction;

transmitting the slide information to an out-of-hall maintenance board, wherein the out-of-hall maintenance board is used for displaying according to the slide speed and the slide direction carried in the slide information;

monitoring whether the real-time sliding speed of the elevator is greater than a preset speed threshold value or not;

if the real-time elevator sliding speed of the elevator is greater than a preset speed threshold, controlling a relay to automatically switch a brake release loop;

the elevator comprises a contactor, a normally closed contact of the contactor is connected with a three-phase driving terminal of the main machine, and when the elevator operates normally, the contact of the contactor is disconnected, so that the main machine operates normally; and when the elevator is rescued, the contact of the attraction contactor is in short circuit with the three-phase input terminal of the host machine, so that reverse torque can be generated when the host machine rotates.

2. The rescue method for an elevator without a machine room according to claim 1, wherein the control relay automatically switches a brake release loop, comprising:

when the real-time elevator sliding speed of the elevator is greater than a preset speed threshold, controlling a normally closed contact of the relay to be disconnected so as to disconnect the output of a rescue loop and reduce the real-time elevator sliding speed of the elevator;

when the real-time sliding speed of the elevator is reduced to the preset speed threshold, determining the speed reduction duration;

and if the deceleration duration time reaches a preset duration threshold, controlling a normally closed contact of the relay to be closed so as to recover the output of the rescue loop.

3. The rescue method for an elevator without a machine room according to claim 2, wherein the control relay automatically switches a brake release loop, further comprising:

recording the continuous overspeed times of the elevator in preset time;

and if the continuous overspeed times exceed a preset time threshold, controlling the on-off of the relay according to a preset switching frequency until the elevator rescue mode is exited.

4. The rescue method of the elevator without a machine room according to claim 3, wherein the rescue method is applied to an elevator control panel, the rescue signal is a signal generated by closing the rescue switch, and the rescue method further comprises:

when a recovery signal generated by the rescue switch is detected, the elevator rescue mode is exited;

and when the communication with the hall outside access panel is detected to be abnormal, keeping the signal state before the communication with the hall outside access panel is detected to be abnormal, and outputting the communication abnormal fault information until the communication is recovered to be normal.

5. The rescue method of the elevator without the machine room according to claim 3, wherein the entering of the rescue mode of the elevator according to the rescue signal generated by the rescue switch comprises:

when a rescue signal generated by a rescue switch is monitored, whether the elevator is powered off is detected;

if the elevator is powered off, entering an elevator rescue mode; otherwise, generating elevator fault information and entering the elevator rescue mode.

6. A rescue method for an elevator without a machine room, comprising:

receiving elevator sliding information sent by an elevator control board, wherein the elevator sliding information is information determined by the elevator control board based on an elevator rescue mode according to collected host encoder signals, the elevator rescue mode is a mode entering according to rescue signals, and the rescue signals are signals generated by a rescue switch;

displaying according to the speed and direction of the sliding device carried in the sliding information;

the elevator comprises a contactor, a normally closed contact of the contactor is connected with a three-phase driving terminal of the main machine, and when the elevator normally runs, the contact of the contactor is disconnected, so that the main machine normally runs; and when the elevator is rescued, the contact of the attraction contactor is in short circuit with the three-phase input terminal of the main machine, so that reverse torque can be generated when the main machine rotates.

7. The rescue method for elevator without machine room according to claim 6, characterized in that the rescue method is applied to an out-of-hall access panel of an elevator, and before displaying according to the speed and direction of the elevator carried in the elevator information, the method further comprises:

entering a rescue display mode when the rescue signal is detected;

after entering the rescue display mode, controlling a buzzer to sound according to a flat sensor signal;

the step of displaying according to the speed and the direction of the slide carried in the slide information comprises the following steps: and extracting the elevator sliding speed and the elevator sliding direction from the elevator sliding information, determining the floor information of the elevator car according to the elevator sliding speed, the elevator sliding speed and the flat sensor signal, and displaying the floor information, the elevator sliding direction and/or the elevator sliding speed.

8. The rescue method for an elevator without a machine room according to claim 7, characterized by further comprising:

when the communication with the elevator control panel is detected to be abnormal, communication abnormal fault information is displayed, and on-off of a relay is controlled according to a preset switching frequency based on the rescue signal so as to automatically switch a brake release loop.

9. An elevator operating panel, comprising: a processor and a memory;

the memory has stored therein at least one instruction, which is executed by the processor, to cause the elevator control board to perform the rescue method of the machineroom-less elevator according to any one of claims 1 to 5.

10. An out-of-hall access panel for an elevator, comprising: a processor and a memory;

the memory has stored therein at least one instruction that is executed by the processor to cause an out-of-hall service panel of the elevator to perform the rescue method of the machineroom-less elevator according to any one of claims 6 to 8.

11. A rescue system for an elevator without a machine room, comprising: an elevator control panel, an out-of-hall maintenance panel, a backup power supply and a contactor;

the elevator control panel is in communication connection with the hall outside access panel and used for entering an elevator rescue mode according to a rescue signal generated by a rescue switch, determining elevator sliding information of an elevator according to an acquired host encoder signal based on the elevator rescue mode and transmitting the elevator sliding information to the hall outside access panel;

the hall maintenance board is used for receiving the sliding information sent by the elevator control board and displaying according to the sliding speed and the sliding direction carried in the sliding information;

the backup power supply provides a working power supply for the elevator control panel and the hall outside service panel;

the contactor normally closed contact of the contactor is connected with the three-phase driving terminal of the main machine, and when the elevator operates normally, the contactor contact is disconnected, so that the main machine operates normally; and when the elevator is rescued, the contact of the attraction contactor is in short circuit with the three-phase input terminal of the host machine, so that reverse torque can be generated when the host machine rotates.

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