JP7280437B2 - METHOD, APPARATUS AND COMPUTER APPARATUS FOR DETECTING OBJECTS IN ELEVATOR DOORS - Google Patents

Description

TECHNICAL FIELD The present invention relates to the technical field of elevators, and more particularly to a method, apparatus, computer device, and computer-readable storage medium for detecting that an object is caught in an elevator door.

In high-rise buildings, elevators are important devices that enable people in the building to pass through different floors. Elevators typically have object detection capabilities at the elevator doors. Object detection devices in conventional elevators have a dead zone and cannot detect small objects. If there is a small object blocking the elevator door, the elevator will also determine that the door is in a closed state, then the elevator can operate normally. However, an object is still present between the elevator doors. In the course of elevator operation, there are objects between the elevator doors, which poses a security risk.

Therefore, the conventional method for detecting that a foreign object is caught in an elevator door has a problem of inaccurate detection.

Based on this, a method, apparatus, computer apparatus and computer readable method for detecting an object being caught in an elevator door for the technical problem that the conventional method for detecting an object by an elevator door is inaccurate. It is necessary to provide a suitable storage medium.

upon detecting that the elevator door panel is fully closed, removing the closing torque of the elevator door motor to rebound the elevator door panel;
obtaining a rebound distance and rebound velocity of the elevator door panel; and determining whether a foreign object is caught in the elevator door panel based on the rebound distance and/or rebound velocity. A method for detecting that a foreign object is caught.

In one embodiment, upon detecting that an elevator door panel is fully closed, before removing the door closing torque of the elevator door motor to cause the elevator door panel to rebound,
sending a door close signal to the elevator door motor so that the elevator door motor controls the closing of the elevator door panel; and upon detecting a circuit closing signal of the elevator car lock, the elevator door panel is fully closed. Further including determining the closed.

In one embodiment, obtaining the elevator door panel rebound distance and rebound velocity includes:
obtaining first position information of a preset point of the elevator door panel when the elevator door panel stops rebounding;
determining a rebound speed from a second position of the elevator door panel to the first position, wherein the second position information is position information of a preset point when the elevator door panel is fully closed; and obtaining a rebound distance of the elevator door panel based on the first location information and the second location information.

In one embodiment, for the preset points:
if the elevator door motor is located at the top of the elevator, the preset points are located at the top and/or middle of the elevator door panel; and if the elevator door motor is located at the bottom of the elevator, wherein said preset points are provided at the bottom and/or middle of said elevator door panel.

In one embodiment, determining whether a foreign object is trapped in the elevator door panel based on the rebound distance and/or rebound velocity includes:
determining if the rebound distance reaches a first threshold and/or if the rebound velocity reaches a second threshold a foreign object is trapped in the elevator door panel.

In one embodiment, the method further comprises sending an operation stop signal to the elevator master control to stop operation of the elevator when it is determined that a foreign object is caught in the door panel of the elevator.

In one embodiment, after sending a deactivation signal to the elevator,
sending a door open signal to the elevator door motor to open the door panel of the elevator when the elevator is located in a horizontal level;
sending an alarm signal to an elevator alarm device so that the elevator alarm device outputs preset alarm information;
At least performing any one of the steps of notifying an adjuster of said elevator monitoring center to inspect said elevator door panel by sending warning information to said elevator monitoring center.

A device for detecting that a foreign object is caught in an elevator door,
a rebound module for removing door closing torque of an elevator door motor to rebound the elevator door panel upon detecting that the elevator door panel is fully closed;
an acquisition module for acquiring the rebound distance and rebound velocity of the elevator door panel;
a determination module for determining whether a foreign object is caught in the elevator door panel based on the rebound distance and/or rebound velocity.

In one embodiment, the device comprises:
and a stop module for sending a stop signal to the elevator to stop the elevator when determining that a foreign object is caught in the door panel of the elevator.

A computer apparatus including a processor and a memory storing a computer program, for detecting, when the processor executes the computer program, that a foreign object is caught in an elevator door as described above. A computing device that implements the method of

A computer readable storage medium having a computer program stored thereon, said computer program being executed by a processor, a method for detecting a foreign object being caught in an elevator door as described above. come true.

The above-described method, device, computer device, and storage medium for detecting that a foreign object is caught in an elevator door are provided by canceling the door closing torque of the elevator door motor when the elevator door panel is completely closed. rebounding the elevator door panel, obtaining the rebounding distance and rebounding speed of the elevator door panel in the rebounding process by means of the encoder in the elevator door motor, and determining whether there is a foreign object in the elevator door panel based on the rebounding distance and/or rebounding speed of the elevator door panel; It can be determined whether it is pinched or not. Compared with the prior art, the present invention can more accurately detect whether there is a foreign object caught in the door panel of the elevator, so that the elevator does not carry foreign objects during the operation process, thereby improving the safety of the elevator. operation can be ensured.

FIG. 1 is a diagram showing an application scene of a method for detecting that a foreign object is caught in an elevator door in one embodiment. FIG. 2 is a structural schematic diagram of a method for detecting an object caught in an elevator door according to an embodiment when the elevator is closed normally. FIG. 3 is a structural schematic diagram of a method for detecting an object being caught in an elevator door in an embodiment, in which an object is caught when the elevator is closed. FIG. 4 is a flow chart of a method for detecting a stuck object in an elevator door in one embodiment. FIG. 5 is a structural schematic diagram after the elevator rebounds in the method for detecting an object caught in the elevator door in one embodiment. FIG. 6 is a time-lapse schematic diagram of an elevator rebound process in a method for detecting that an object is caught in an elevator door in one embodiment. FIG. 7 is a structural block diagram of an apparatus for detecting a foreign object sandwiched between elevator door panels in one embodiment. FIG. 8 is an internal structural diagram of a computer device in one embodiment.

In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be described in more detail below in conjunction with the drawings and examples. It should be understood that the specific examples described herein are for the purpose of interpreting the invention only, and are not intended to limit the invention.

It should be noted that the terms "first/second/third" according to the embodiments of the present invention are only for distinguishing similar objects and do not represent a specific order for the objects. "First\Second\Third" are interchangeable with each other in a particular order or order before and after where permitted. Since the objects identified by "first\second\third" are interchangeable where appropriate, the embodiments of the invention described herein may be used in conjunction with other than those shown or described herein. It should be understood that they can be performed in sequence.

A method for detecting that an object is caught in an elevator door according to the present invention can be applied to the application scene shown in FIG. FIG. 1 is an application scene diagram of a method for detecting that a foreign object is caught in an elevator door in one embodiment. Among them, the elevator 102 communicates with the elevator monitoring center 104 over the network. Elevator 102 controls the closing of the elevator doors by an elevator door motor therein.

As shown in FIG. 2, FIG. 2 is a structural schematic diagram of a method for detecting an object caught in an elevator door in an embodiment when the elevator is closed normally. Among them, the elevator door panel 302 may be a device installed on the four sides of the elevator car and used to open or close the elevator. The elevator door panel 302 is suspended from the rail frame of the elevator and pulled by an elevator door motor to perform door opening/closing operations. Rail frames are members used to support and secure rails and may be attached to shaft walls or beams. It fixes the spatial position of the rail and can undergo various movements by the rail. The elevator door motor may be the device that controls the opening/closing operation of the elevator door panel 302 and includes an encoder therein.

After the elevator door motor therein controls the closing of the elevator door panel 302, the elevator door motor 102 releases the closing torque of the elevator door motor after the elevator door panel 302 is closed, causing the elevator door panel 302 to rebound. , obtaining the rebound distance after rebound and the rebound velocity during rebound, and based on the rebound distance and/or rebound velocity, determining whether the elevator door panel 302 is pinched by a foreign object 404 , while the elevator monitoring center in the network; 104 to notify relevant personnel to inspect the elevator.

Among them, the elevator 102 can be a variety of passenger elevators, freight elevators, medical elevators, general merchandise elevators, sightseeing elevators, vehicle elevators, ship elevators and construction elevators, etc., but not limited to them. . The elevator monitoring center 104 may be a terminal device such as a PC. Elevator monitoring center 104 may also be implemented by an independent server or a server cluster of multiple servers.

In one embodiment, as shown in FIG. 4, a method is provided for detecting a foreign object trapped in an elevator door. FIG. 4 is a flow chart of a method for detecting a stuck object in an elevator door in one embodiment. Taking the elevator to which the method is applied in FIG. 1 as an example, the method for detecting that a foreign object is caught in the elevator door may include the following steps.

Step S201: Upon detecting that the elevator door panel 302 is fully closed, cancel the door closing torque of the elevator door motor to make the elevator door panel 302 rebound.

In this embodiment, as shown in FIG. 3, FIG. 3 shows a method for detecting a foreign object being caught in an elevator door according to an embodiment when the elevator is closed. It is a structural schematic diagram. The elevator door motor can control the closing of the elevator door panel 302 by applying torque to the elevator door panel 302 in the closing direction. Among them, the magnitude of the door closing torque is not limited. A normal door closed situation of an elevator is shown in FIG. The elevator door motor can be controlled to fully close the elevator door panel 302 . A car lock provided therein allows the elevator to verify that the elevator door panel 302 is fully closed after the car lock has locked. However, if a foreign object 404 is caught in the elevator door panel 302, the elevator door panel 302 cannot be completely closed. For example, as shown in FIG. 3, when the elevator door motor is installed at the top of the elevator, if a foreign object 404 is caught in the elevator door panel 302 during the closing process of the elevator door panel 302, the elevator door panel 302 will , it can still be closed, but there is a foreign object 404 at the bottom of the elevator door panel 302 at that time, and the elevator door panel 302 presents an "A" shape at that time. When the elevator door motor is installed at the bottom of the elevator, the elevator door panel 302 will present a "V" shape if a foreign object 404 is caught in the elevator door panel 302 during the closing process of the elevator. The elevator car locks attached to the elevator door panel 302 can be closed so that the elevator meets the operating conditions. However, operating the elevator at that time may pose a security risk to the elevator.

The closing torque of the elevator door motor is removed to rebound the elevator door panel 302. Rebound may be movement in the direction opposite to the door closing direction after the elevator door panel 302 loses door closing torque. If no foreign object 404 is caught between the elevator door panels 302, the elevator door panels 302 can rebound after the closing torque of the elevator door motor is removed, at which time the rebound distance and/or rebound speed is small. If a foreign object 404 is caught between the elevator door panels 302, the elevator door panels 302 may also rebound after the closing torque of the elevator door motor is removed, at which time the rebound distance and/or rebound speed is great.

Step S202: Obtain the rebound distance and rebound velocity of the elevator door panel 302;

As shown in FIG. 5 , FIG. 5 is a structural schematic diagram after the elevator rebounds in a method for detecting an object being caught in an elevator door in an embodiment. The elevator door panel 302 produces a rebound distance and a rebound velocity when rebounding. Wherein, the rebound distance may be the distance from the closed position of the elevator door panel 302 of the elevator door panel 302 to the stationary position after the rebound is finished. The rebound speed may be the speed generated while the elevator door panel 302 moves to the rest position after the rebound is completed during the rebound process. Among them, the rebound speed may be the maximum speed, the average speed, or the instantaneous speed at a certain point in the rebound process, and its specific form is not limited. The state of the elevator door panel 302 after the rebound is complete and comes to rest is shown in FIG. Since the foreign object 404 is caught between the elevator door panels 302, after the door closing torque is removed, the elevator door panels 302 move in the door opening direction to restore the vertical state, ie, rebound. The elevator door motor records the rebound distance and rebound velocity with encoders located therein. Among them, the number and structure of encoders are not limited.

Step S203: Determine whether the elevator door panel 302 is pinched by a foreign object 404 according to the rebound distance and/or the rebound velocity.

FIG. 5 shows the elevator door panel 302 after rebounding. A foreign object 404 is caught between the elevator door panels 302 so that the elevator door panels 302 cannot be completely closed. The elevator door motor records the rebound distance and rebound speed of the elevator door panel 302 with an encoder provided therein. Since the rebound distance and/or rebound velocity is large when the object 404 is pinched, whether or not the object 404 is pinched in the elevator door panel 302 is determined based on one or both of the rebound distance and rebound velocity. can be determined.

In one embodiment, determining whether a foreign object 404 is trapped in the elevator door panel 302 based on the rebound distance and/or rebound velocity includes: the rebound distance reaching a first threshold; and/or When the rebound velocity reaches a second threshold, determining whether a foreign object 404 is trapped in the elevator door panel 302 .

In this example, an encoder in the elevator door motor can compare the rebound distance to a first set threshold and compare the rebound velocity to a second set threshold. An encoder in the elevator door motor determines whether a foreign object 404 is caught between elevator door panels 302 based on whether the rebound distance is greater than a first threshold or whether the rebound velocity is greater than a second threshold. It is possible to determine whether or not Also, the encoder in the elevator door motor can also determine whether a foreign object 404 is caught between the elevator door panels 302 by comparing the rebound distance and rebound velocity with corresponding thresholds. By linking the rebound distance and the rebound speed for determination, it is possible to more accurately determine whether or not the foreign object 404 is caught between the door panels 302 of the elevator. When the elevator door panel 302 is normal and no foreign object 404 is caught, the rebound distance and rebound speed are small. Great distance and rebound speed. When either the rebound velocity or the rebound distance exceeds the corresponding threshold, it can be determined whether the elevator door panel 302 has a foreign object 404 caught. Wherein, the first threshold may be the rebound distance threshold, the second threshold may be the rebound speed threshold, and the magnitude of the threshold may be set according to the actual situation. . The present embodiment sets corresponding distance thresholds and velocity thresholds and compares to corresponding rebound distances and rebound velocities such that if either or both of the rebound distance or rebound velocity exceeds the corresponding thresholds, the elevator Therefore, it is possible to more accurately determine that the foreign object 404 is caught in the door panel 302 of the door panel 302 .

In one embodiment, upon detecting that the elevator door panel 302 is fully closed, the elevator door motor closes the elevator door panel 302 before removing the closing torque of the elevator door motor and causing the elevator door panel 302 to rebound. and determining that the elevator door panel 302 is fully closed upon detecting the elevator car lock circuit closing signal.

In this embodiment, the door closing signal may be a signal for the elevator door motor to control the closing of the door panel 302 of the elevator. The elevator door motor can control the closing of the elevator door panel 302 after receiving the signal. The elevator car lock may be a door lock provided on the door panel 302 of the elevator. After the elevator door panel 302 is closed, the mechanical locking hooks of the door lock engage. In doing so, the safety circuit of the elevator is closed. The encoder value may be set when the elevator door panel 302 is opened. When the elevator door panel 302 closes, the encoder value may be another setting. At this time, the elevator door motor determines whether or not the elevator door panel 302 is completely closed according to the value of the encoder. Can be sent to master control. At that time, the elevator master control can determine that the door panel 302 of the elevator is in a completely closed state before starting the operation, thereby further ensuring safe operation of the elevator.

In this embodiment, even if the elevator is normally closed, it is determined that the elevator is in a closed state so that it can be checked whether a foreign object 404 is caught under the door panel 302 of the elevator. After that, a step of canceling the door closing torque can be performed.

In one embodiment, obtaining the rebound distance and rebound velocity of the elevator door panel 302 includes determining first position information of a preset point of the elevator door panel 302 when the elevator door panel 302 stops rebounding. and the rebound velocity of the elevator door panel 302 from the second position to the first position, and the second position information is the position information of the preset point when the elevator door panel 302 is fully closed. and obtaining a rebound distance of the elevator door panel 302 based on the first location information and the second location information.

In this embodiment, as shown in FIG. 6, FIG. 6 is a time-lapse schematic diagram of an elevator rebound process in a method for detecting that an object is caught in an elevator door in an embodiment. The first position P1 information may be position information of a preset point when the elevator door panel 302 is restored to a vertical state during the rebounding process of the elevator. The second position P2 information may be the preset point position information when the elevator door panel 302 is fully closed by the elevator door motor applying torque F1.

The rebound velocity may be recorded velocity from the preset point second position P2 to the first position P1 using an encoder in the elevator door motor. Among them, the preset point may be provided on the door panel 302 of the elevator. The rebound speed may be the maximum speed from the second position P2 to the first position P1, the average speed from the second position P2 to the first position P1, or the second from the position P2 to the first position P1 at a certain point in time, and its specific form may be set according to the actual situation.

The rebound distance may be the distance from the preset point second position P2 to the first position P1 recorded using an encoder on the elevator door motor. In the rebound process, the elevator door panel 302 may shake after reaching the first position P1 due to inertia, so the elevator door panel 302 passes through the first position P1 multiple times during the rebound process. there's a possibility that. In this embodiment, the first position P1 may be position information when the preset point reaches the first position P1 for the first time.

In this example, the elevator causes the elevator door panel 302 to close under the action of torque F1, and at time t0 it can be established that the elevator door panel 302 has already closed. At that time, the second position P2 information can be recorded. At time t0, when the elevator door panel 302 is fully closed, the elevator door motor can remove torque F1 to cause the elevator door panel 302 to rebound. At time t1, rebound of the elevator door panel 302 ends. At that time, an encoder in the elevator door motor can record the first position P1 information. The rebound velocity recorded by the encoder during the rebound process is shown by line segment 602 . At line segment 602, a specific numerical form of rebound velocity can be established in any form. The rebound distance may be determined based on the distance from the second position P2 of the preset point recorded by the encoder to the first position P1. According to this embodiment, the encoder can determine the specific rebound speed and rebound distance according to the change in speed and position in the rebound process of the preset point, and obtain the rebound speed and rebound distance more accurately. This allows the encoder to more accurately determine whether a foreign object 404 is caught in the elevator door panel 302 .

In one embodiment, for the preset points, if the elevator door motor is located at the top of the elevator, the preset points are located at the top and/or middle of the elevator door panel 302; If provided at the bottom, this includes preset points being provided at the bottom and/or middle of the elevator door panel 302 .

In this embodiment, the preset point may be a point for recording the first location information and the second location information, and may be provided in the elevator. Normally, the elevator door motor may be installed on top of the elevator, so the device for detecting the preset point is also installed on top of the elevator together with the elevator door motor. In so doing, the device can detect position changes in the top and middle of the elevator door panel 302 . As such, preset points may be provided at the top and/or middle of the elevator door panel 302 . In one embodiment, the elevator door motor may be located at the bottom of the elevator. The device is then also installed at the bottom of the elevator together with the elevator door motor. In so doing, the device can detect position changes in the bottom and/or middle of the elevator door panel 302 . As such, preset points may be provided at the bottom and/or middle of the elevator door panel 302 . Among them, the number of preset points is not limited.

In one embodiment, upon determining that a foreign object 404 is caught in the elevator door panel 302, the method further includes sending a stop operation signal to an elevator master control to stop operation of the elevator.

In this embodiment, the elevator master control may be a device for controlling the operation or stopping of an elevator. The operation stop signal may be a signal for stopping the operation of the device. Among them, the installation position of the elevator master control is not limited, and the receiving form of the operation stop signal is not limited. In this embodiment, when it is determined that a foreign object 404 is caught in the door panel 302 of the elevator, an operation stop signal is transmitted to the elevator master control to stop the elevator from operating while the foreign object is caught. and passenger safety can be ensured.

In one embodiment, after sending a stop signal to the elevator, if the elevator is located in a horizontal layer, sending a door open signal to the elevator door motor to open the door panel 302 of the elevator; alerting the elevator alarm device; sending a signal so that the elevator alarm device outputs preset alarm information; and sending the alarm information to the elevator monitoring center so that the adjuster of the elevator monitoring center inspects the elevator door panel 302. Perform at least one of the steps of notifying.

In this example, the elevator may perform any one or more of the following steps after receiving a deactivation. Which step to execute specifically may be set according to the actual situation. for example:

In one embodiment, once the elevator is in the horizontal tier, the elevator door panel 302 is opened by sending a door open signal to the elevator door motor. When the elevator is located in the horizontal tier, the elevator door motor receives the door open signal and causes the elevator to open for passengers in the elevator to inspect and remove foreign objects 404 caught in the elevator door panel 302. and the elevator can operate normally and safely. Here, the door open signal may be a signal that allows the elevator door motor to control the door panel 302 of the elevator to open the elevator. The manner in which the elevator door motor receives the door open signal is not limited. In this embodiment, after detecting that a foreign object 404 is caught in the elevator door panel 302, when the elevator is located in a horizontal layer, the elevator door panel is opened so that the passengers in the elevator can open the elevator door panel. A foreign object 404 between 302 may be suggested to be inspected to ensure safe operation of the elevator. Also, if the elevator is located in a non-horizontal layer, it can be detected whether a foreign object 404 is caught in the door panel 302 of the elevator. Upon detecting that a foreign object 404 is caught in the elevator door panel 302 , the elevator alarm device transmits alarm information to suggest that the passenger inspect the foreign object 404 between the elevator door panels 302 to prevent passengers and the elevator from safety can be ensured.

In one embodiment, sending an alarm signal to the elevator alarm device causes the elevator alarm device to output preset alarm information. After the elevator stops working, the elevator alarm device receives an alarm signal and sends alarm information to the inside of the elevator car, so that the passengers in the elevator know that the elevator is in an unsafe working condition. can be done. Here, the form of the warning information is not limited, and may be voice, light, or the like. In this embodiment, when the elevator stops working, the elevator alarm device can be used to transmit alarm information, so that passengers and related personnel can be notified immediately that the elevator is in an abnormal state.

In one embodiment, after the elevator has stopped operating, an alarm signal is sent to the elevator monitoring center to notify the adjuster of the elevator monitoring center to inspect the elevator door panel 302 so that the elevator is in a safe operating state. can be ensured. In one embodiment, the elevator can detect the closed state of the elevator door panel 302 by the method for detecting a trapped object in the elevator door described above. For example, if the elevator door motor were mounted on top of the elevator door panel 302, the method described above for detecting a trapped object in the elevator door would cause an "A" when the elevator door panel 302 was closed. If the elevator door motor is installed at the bottom of the elevator door panel 302, the above-described method for detecting whether a foreign object is caught in the elevator door is used to detect whether the elevator door panel is a mold door or not. It can be detected whether 302 is a "V" shaped door when closed. Upon detecting that the elevator door panel 302 is not in the vertical closed state, the above warning signal can be sent to notify the elevator monitoring center to detect the elevator. Upon detection, it can ensure that the elevator is in a safe operating state by detecting the elevator rail or door suspension system and taking corresponding action. In this embodiment, by sending alarm information to the elevator monitoring center, it is possible to detect an elevator whose adjuster is out of order and immediately notify the elevator to perform maintenance, ensuring safe operation of the elevator. can be done.

The method for detecting that a foreign object is caught in the elevator door described above is to remove the door closing torque of the elevator door motor when the elevator door panel 302 is completely closed, thereby opening the elevator door panel 302. rebound. The elevator door motor can obtain the rebound distance and rebound speed according to the position change of the preset point in the rebound process, and according to the rebound distance and/or rebound speed of the preset point of the elevator door panel 302, the elevator door motor It is possible to determine whether or not a foreign object 404 is caught in the door panel 302 of the door panel 302 . At the same time, the elevator can make different emergency responses in different situations. Compared with the prior art, this aspect can more accurately detect whether the foreign object 404 is caught in the door panel 302 of the elevator, and the elevator does not carry the foreign object 404 in the process of operation, ensuring the safety of the elevator. operation can be ensured.

In one embodiment, as shown in FIG. 7, an apparatus is provided for detecting a foreign object trapped in an elevator door. FIG. 7 is a structural block diagram of a device for detecting that a foreign object is caught in an elevator door in one embodiment. A device for detecting that a foreign object is caught in the elevator door,
a rebound module 702 for removing the closing torque of the elevator door motor to rebound the elevator door panel 302 upon detecting that the elevator door panel 302 is fully closed;
an acquisition module 704 for acquiring the rebound distance and rebound velocity of the elevator door panel 302;
a determination module 706 for determining whether a foreign object 404 is trapped in the elevator door panel 302 based on the rebound distance and/or rebound velocity.

In one embodiment, the device for detecting a trapped object in the elevator door sends a deactivation signal to the elevator when it determines that the elevator door panel 302 has a trapped object 404 . and a deactivation module for deactivating the elevator.

In one embodiment, the apparatus for detecting an object trapped in the elevator door sends a door close signal to the elevator door motor so that the elevator door motor controls closing of the elevator door panel 302. and a closure determination module for determining that the elevator door panel 302 is completely closed upon detecting the circuit closure signal of the elevator car lock.

In one embodiment, the acquisition module 704 further acquires the first position information of the preset point of the elevator door panel 302 when the rebound of the elevator door panel 302 stops, and from the second position of the elevator door panel 302 . Determine the rebound speed to the first position, the second position information is the position information of the preset point when the elevator door panel 302 is fully closed, and the first position information and the second position information Based on this, it is used to obtain the rebound distance of the elevator door panel 302 .

In one embodiment, the determination module 706 further determines that the elevator door panel 302 has a foreign object 404 when the rebound distance reaches a first threshold and/or the rebound velocity reaches a second threshold. Used to confirm.

In one embodiment, the apparatus for detecting an object caught in the elevator door sends a door open signal to the elevator door motor to open the elevator door panel 302 when the elevator is located in the horizontal level. A door opening module for opening, an alarm module for the elevator alarm device to output preset alarm information by sending an alarm signal to the elevator alarm device, and an alarm module for sending the alarm information to the elevator monitoring center , a notification module for notifying an adjuster of the elevator monitoring center to inspect the elevator door panel 302 .

A device for detecting that a foreign object is caught in an elevator door according to the present invention corresponds to the method for detecting that a foreign object is caught in an elevator door according to the present invention, and detects a foreign object that is caught in an elevator door according to the present invention. For specific limitations on the device for detecting that a foreign object is caught in an elevator door, reference can be made to the limitations on the method for detecting that a foreign object is caught in the elevator door above. The technical features and beneficial effects described in the embodiment of the method for detecting an object trapped in an elevator door described above are all for detecting an object trapped in an elevator door. , and will not be repeated here. A part or all of each module in the device for detecting that a foreign object is caught in the elevator door described above can be realized by software, hardware, or a combination thereof. Each of the above modules can be embedded in a processor in a computer device in the form of hardware, or independent of a processor in a computer device in the form of hardware, so that the processor calls and executes the operation corresponding to each module, and in the form of software, in the computer device It can also be stored in memory.

In one embodiment, a computing device is provided. The computer device may be an elevator door motor device, the internal structure diagram of which is shown in FIG. The computing device includes a processor, memory, network interface and database connected by a system bus. Among them, the processor in the computer device is used to provide computation and control functions. The memory in the computing device includes non-volatile storage media and internal memory. The non-volatile storage medium stores an operating system, a computer program and a database. The internal memory provides an environment for operation of the operating system and computer programs on non-volatile storage media. A database in the computing device may be used to store data such as elevator rebound speed and rebound distance. A network interface in the computer device is used to connect and communicate with an external terminal via a network. The computer program is executed by a processor to implement a method for detecting a trapped foreign object in an elevator door.

Those skilled in the art will appreciate that the structure shown in FIG. 8 is merely a block diagram of part of the structure relating to aspects of the present invention and is not intended to limit the computer apparatus to which aspects of the present invention are applied. should be understood. A particular computing device may include more or fewer components than those shown, may combine certain components, or have different arrangements of components.

In one embodiment, a computing device is provided that includes a processor and memory. A computer program is stored in the memory. The processor, when executing the computer program, implements the method for detecting a trapped foreign object in an elevator door according to any one of the embodiments above.

A person skilled in the art will know that a computer program is associated with implementing part or all of the steps of the method for detecting a foreign object being trapped in an elevator door according to any one of the above embodiments. It should be understood that this can be accomplished by instructing the hardware to do so. The computer program can be stored on a non-volatile computer readable storage medium. The computer program, when executed, may include the steps in the above method embodiments. Any references to memory, storage, databases or other media employed in embodiments of the present invention, in and of themselves, may include non-volatile and/or volatile memory. Nonvolatile memory may include read only memory (ROM), programmable ROM (PROM), electrically programmable ROM (EPROM), electrically erasable programmable ROM (EEPROM), or flash memory. Volatile memory can include random access memory (RAM) or external cache memory. By way of explanation and not limitation, RAM may include Static RAM (SRAM), Dynamic RAM (DRAM), Synchronous DRAM (SDRAM), Double Data Rate SDRAM (DDRSDRAM), Enhanced SDRAM (ESDRAM), Synchlink DRAM. (SLDRAM), memory bus (Rambus) direct RAM (RDRAM), direct memory bus dynamic RAM (DRDRAM), and memory bus dynamic RAM (RDRAM).

Thus, in one embodiment, a computer readable storage medium having a computer program stored thereon which, when the program is executed by a processor, removes a foreign object from an elevator door according to any one of the above embodiments. Further provided is a computer readable storage medium embodying a method for detecting a pinched .

Each technical feature of the above embodiments can be combined arbitrarily. In order to simplify the explanation, not all possible combinations of the technical features in each of the above examples are described, but as long as there is no contradiction in the combination of these technical features, the should be considered a range.

It should be understood that the above examples are merely illustrative of some embodiments of the invention, and that the description, while specific and detailed, is not intended to limit the scope of the invention. It is obvious that a person skilled in the art can make several modifications and improvements without departing from the spirit of the present invention, which are all within the protection scope of the present invention. Therefore, the protection scope of the present invention should be determined by the claims.

Claims (11)

removing door closing torque of an elevator door motor to rebound the elevator door panel when detecting that the elevator door panel is fully closed;
obtaining a rebound distance and rebound velocity of the elevator door panel; and determining whether a foreign object is caught in the elevator door panel based on the rebound distance and/or rebound velocity. A method for detecting that a foreign object is caught in an elevator door. Upon detecting that the elevator door panel is fully closed, before removing the closing torque of the elevator door motor to rebound the elevator door panel,
sending a door close signal to the elevator door motor so that the elevator door motor controls the closing of the elevator door panel; and upon detecting a circuit closing signal of the elevator car lock, the elevator door panel is fully closed. 2. The method of claim 1, further comprising establishing closure. Obtaining the rebound distance and rebound velocity of the elevator door panel includes:
obtaining first position information of a preset point of the elevator door panel when the elevator door panel stops rebounding;
determining a rebound speed from a second position of the elevator door panel to the first position, wherein the second position information is position information of a preset point when the elevator door panel is fully closed; and obtaining a rebound distance of the elevator door panel based on the first location information and the second location information. For the preset points,
if the elevator door motor is located at the top of the elevator, the preset points are located at the top and/or middle of the elevator door panel; and if the elevator door motor is located at the bottom of the elevator, 4. A method according to claim 3, characterized in that the preset points are provided at the bottom and/or middle of the elevator door panel. Determining whether a foreign object is trapped in the elevator door panel based on the rebound distance and/or rebound velocity includes:
determining that a foreign object is trapped in the elevator door panel if the rebound distance reaches a first threshold and/or if the rebound velocity reaches a second threshold. The method of claim 1, wherein 4. The method further comprising, upon determining that a foreign object is caught in the door panel of the elevator, sending an operation stop signal to the elevator master control to stop operation of the elevator. 1. The method according to 1. After transmitting the operation stop signal to the elevator,
sending a door open signal to the elevator door motor to open the door panel of the elevator when the elevator is located in a horizontal level;
sending an alarm signal to an elevator alarm device so that the elevator alarm device outputs preset alarm information;
at least performing any one of the steps of notifying an adjuster of said elevator monitoring center to inspect said elevator door panel by sending warning information to said elevator monitoring center. 7. The method of claim 6. a rebound module for removing door closing torque of an elevator door motor to rebound the elevator door panel upon detecting that the elevator door panel is fully closed;
an acquisition module for acquiring the rebound distance and rebound velocity of the elevator door panel;
a determination module for determining whether a foreign object is trapped in the elevator door panel based on the rebound distance and/or rebound velocity. A device for detecting 4. The elevator further comprises a stop module for sending a stop signal to the elevator to stop the elevator if it determines that a foreign object is caught in the door panel of the elevator. 8. Apparatus according to 8. A computer device comprising a processor and a memory in which a computer program is stored,
Characterized in that the processor, when executing the computer program, implements the steps of the method for detecting a foreign object trapped in an elevator door according to any one of claims 1 to 7. computer equipment. A computer-readable storage medium storing a computer program,
Characterized in that the computer program, when executed by a processor, implements the steps of the method for detecting a jammed object in an elevator door according to any one of claims 1-7. computer readable storage medium.

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