阅读说明：本技术 一种电梯轿厢剪切事故救援方法、装置、设备及存储介质 (Elevator car shearing accident rescue method, device, equipment and storage medium ) 是由 吴炳坤 林汉洁 余佳鑫 文科 于 2021-09-02 设计创作，主要内容包括：本发明公开了一种电梯轿厢剪切事故救援方法、装置、设备及存储介质。在接收到电梯主控制器发出的曳引电机堵转报警信号时,确定电梯轿厢的位置和电梯门的开闭状态,根据电梯轿厢的位置和电梯门的开闭状态判断是否发生剪切事故。在发生剪切事故时,控制轿厢内的应急救援开关弹出,并向电梯主控制器发出剪切事故报警信号,电梯主控制器根据剪切事故报警信号屏蔽各楼层的外召。在不改变原有的电梯系统的控制逻辑的情况下,提高了系统稳定性,在确定发生剪切事故时,控制轿厢内的应急救援开关弹出,使得被困乘客或同梯的乘客能够及时自救,避免因长时间等待救援造成伤势加重的情况,提高了安全性。(The invention discloses a rescue method, a rescue device, rescue equipment and a storage medium for an elevator car shearing accident. When a traction motor locked-rotor alarm signal sent by an elevator main controller is received, the position of the elevator car and the opening and closing state of the elevator door are determined, and whether a shearing accident occurs is judged according to the position of the elevator car and the opening and closing state of the elevator door. When a shearing accident occurs, an emergency rescue switch in the car is controlled to pop up, a shearing accident alarm signal is sent to the elevator main controller, and the elevator main controller shields the external calling of each floor according to the shearing accident alarm signal. Under the condition that original elevator system's control logic is not changed, improved system stability, when confirming to take place the shearing accident, the emergent rescue switch in the control car pops out for stranded passenger or the passenger with the ladder can in time save oneself, avoid causing the condition that the injury aggravates because of waiting for the rescue for a long time, improved the security.)

1. The rescue method for the elevator car shearing accident is characterized by comprising the following steps based on a safety controller:

when a traction motor locked-rotor alarm signal sent by an elevator main controller is received, the position of an elevator car and the opening and closing state of an elevator door are determined;

judging whether a shearing accident occurs according to the position of the elevator car and the opening and closing state of the elevator door;

when a shearing accident occurs, the emergency rescue switch in the elevator car is controlled to pop up, and the elevator main controller sends a shearing accident alarm signal and is used for shielding the external calling of each floor according to the shearing accident alarm signal.

2. The elevator car shear accident rescue method of claim 1, wherein determining the position of the elevator car and the open and closed state of the elevator doors comprises:

acquiring a distance signal acquired by a vertical distance sensor;

determining a position of the elevator car from the distance signal;

acquiring an infrared signal acquired by an infrared sensor or an image acquired by a camera;

and determining the opening and closing state of the elevator door according to the infrared signal or the image.

3. The elevator car shear accident rescue method of claim 2, further comprising, after determining the position of the elevator car and the open and closed state of the elevator doors:

and judging whether a passenger or an object is clamped by the elevator door according to the acquired infrared signal or the acquired image.

4. The rescue method for elevator car shearing accidents according to claim 3, characterized in that the judgment of whether the shearing accidents occur according to the position of the elevator car and the opening and closing state of the elevator door comprises the following steps:

comparing the position of the elevator car with a safe position when the elevator is on a flat floor;

when the position of the elevator car exceeds the safe position when the elevator is on the flat floor, the opening and closing state of the elevator door is opened, and passengers or objects are clamped by the elevator door, the occurrence of a shearing accident is determined.

5. The elevator car shear accident rescue method of any of claims 1-4, further comprising, after controlling an emergency rescue switch in the elevator car to pop up:

controlling the emergency rescue switch to send a car operation indicating signal, wherein the elevator car operation indicating signal is used for indicating passengers in a car to operate the emergency rescue switch;

responding to the operation of passengers in the elevator car, sending a reverse running signal to the elevator main controller by the input signal of the emergency rescue switch, and responding to the reverse running signal by the elevator main controller to control the elevator car to move in the direction opposite to the current running direction.

6. The rescue method for elevator car shearing accidents according to claim 5, wherein a car running direction operating button is arranged on the emergency rescue switch to control the emergency rescue switch to send a car running operation indicating signal, and the rescue method comprises the following steps:

and controlling a car running direction operation button which is opposite to the current running direction of the elevator car in the emergency rescue switch to be lightened.

7. The elevator car shear accident rescue method of claim 5, further comprising, after controlling an emergency rescue switch within the elevator car to pop up:

and if the input signal of the passenger in the elevator car is not received after the preset time period, sending a reverse running signal to the elevator main controller, wherein the elevator main controller is used for responding to the reverse running signal to control the elevator car to move in a direction opposite to the current running direction.

8. The rescue method for the elevator car shearing accident is characterized by comprising the following steps based on an elevator main controller:

acquiring current of a traction motor and a digital signal output by a rotary encoder;

judging whether the traction motor is locked based on the current of the traction motor and the digital signal output by the rotary encoder;

when the traction motor is locked, a traction motor locked-rotor alarm signal is sent to a safety controller, and the safety controller is used for responding to the traction motor locked-rotor alarm signal to judge whether a shearing accident occurs;

responding to a shearing accident alarm signal sent by the safety controller, and shielding external calls of all floors.

9. The elevator car shear accident rescue method of claim 8, further comprising, after masking an outside call on each floor in response to a shear accident alarm signal issued by the safety controller:

and controlling the elevator car to move in a direction opposite to the current running direction in response to a reverse running signal sent by the safety controller.

10. The elevator car shear accident rescue method of claim 9, wherein controlling the elevator car to move in a direction opposite to a current direction of travel in response to a reverse travel signal issued by the safety controller comprises:

controlling the elevator car to move to the nearest flat floor according to a direction opposite to the current running direction in response to a reverse running signal sent by the safety controller;

controlling to start the brake;

when receiving the feedback information of successful brake activation, controlling the brake to act so as to stop the elevator car at the nearest flat floor;

when feedback information of the starting failure of the brake is received, the traction motor is controlled through negative feedback of a current loop to maintain torque output capable of balancing the elevator car, so that the elevator car stops at the nearest flat floor;

the elevator door is controlled to open to release the trapped passenger.

11. The utility model provides an elevator car cuts accident rescue device which characterized in that, based on safety control ware, includes:

the position and state determining module is used for determining the position of the elevator car and the opening and closing state of the elevator door when receiving a traction motor locked-rotor alarm signal sent by the elevator main controller;

the shearing judgment module is used for judging whether a shearing accident occurs according to the position of the elevator car and the opening and closing state of the elevator door;

switch pops out control module for when taking place the shearing accident, control emergency rescue switch in the elevator car pops out, and to elevator main control unit sends shearing accident alarm signal, elevator main control unit is used for according to the outer calling of each floor of shearing accident alarm signal shielding.

12. The utility model provides an elevator car cuts accident rescue device which characterized in that, based on elevator main control unit, includes:

the acquisition module is used for acquiring the current of the traction motor and the digital signal output by the rotary encoder;

the locked-rotor judging module is used for judging whether the traction motor is locked-rotor based on the current of the traction motor and the digital signal output by the rotary encoder;

the device comprises a locked rotor alarming module, a safety controller and a control module, wherein the locked rotor alarming module is used for sending a locked rotor alarming signal of the traction motor to the safety controller when the traction motor is locked, and the safety controller is used for responding to the locked rotor alarming signal of the traction motor to judge whether a shearing accident occurs;

and the external calling shielding module is used for responding to the shearing accident alarm signal sent by the safety controller and shielding the external calling of each floor.

13. A computer device, comprising:

one or more processors;

storage means for storing one or more programs;

when executed by the one or more processors, cause the one or more processors to implement an elevator car shear accident rescue method as recited in any of claims 1-7, or to implement an elevator car shear accident rescue method as recited in any of claims 8-10.

14. A computer-readable storage medium, on which a computer program is stored, which program, when being executed by a processor, carries out an elevator car shear accident rescue method according to any one of claims 1 to 7, or an elevator car shear accident rescue method according to any one of claims 8 to 10.

Technical Field

The embodiment of the invention relates to the technical field of elevators, in particular to a rescue method, a rescue device, rescue equipment and a storage medium for an elevator car shearing accident.

Background

Along with the continuous development of urbanization construction, the number of elevators increases day by day, the elevators are aged and are not well maintained on site, the hidden dangers of the elevators are serious, and most of shearing accidents are caused by accidental movement faults when the elevators are opened.

There is a large risk zone between the elevator car stopping from flat landing and the next trip command starting, which we call the accidental movement risk zone. In this zone the control system does not control the elevator and the stabilization of the elevator depends on the effectiveness of the safety device. If the safety device is out of order, the car can be accidentally moved, and at least the personnel in the car cannot be caught if the car door is closed from the time the car is accidentally moved to the time before the safety device is actuated. However, if the car door is not closed at this time, a shear accident is likely to occur.

At present, after a shearing accident, a person in the rescue is required to wait for releasing trapped passengers, but the injury of the passengers can be worsened in the waiting process, so that serious injury can be caused.

Disclosure of Invention

The invention provides a rescue method for a shear accident of an elevator car, which can help trapped passengers to save themselves in time when the elevator car has the shear accident, avoid the injury deterioration of the passengers caused by long-time waiting for rescue and improve the safety.

In a first aspect, an embodiment of the present invention provides an elevator car shear accident rescue method, based on a safety controller, including:

when a traction motor locked-rotor alarm signal sent by an elevator main controller is received, the position of an elevator car and the opening and closing state of an elevator door are determined;

judging whether a shearing accident occurs according to the position of the elevator car and the opening and closing state of the elevator door;

when a shearing accident occurs, the emergency rescue switch in the elevator car is controlled to pop up, and the elevator main controller sends a shearing accident alarm signal and is used for shielding the external calling of each floor according to the shearing accident alarm signal.

Optionally, determining the position of the elevator car and the open/close state of the elevator door includes:

acquiring a distance signal acquired by a vertical distance sensor;

determining a position of the elevator car from the distance signal;

acquiring an infrared signal acquired by an infrared sensor or an image acquired by a camera;

and determining the opening and closing state of the elevator door according to the infrared signal or the image.

Optionally, after determining the position of the elevator car and the open/close state of the elevator door, the method further includes:

and judging whether a passenger or an object is clamped by the elevator door according to the acquired infrared signal or the acquired image.

Optionally, judge whether to cut the accident according to the position of elevator car and the open and close state of lift-cabin door, include:

comparing the position of the elevator car with a safe position when the elevator is on a flat floor;

when the position of the elevator car exceeds the safe position when the elevator is on the flat floor, the opening and closing state of the elevator door is opened, and passengers or objects are clamped by the elevator door, the occurrence of a shearing accident is determined.

Optionally, after controlling the emergency rescue switch in the elevator car to pop out, the method further includes:

controlling the emergency rescue switch to send a car operation indicating signal, wherein the elevator car operation indicating signal is used for indicating passengers in a car to operate the emergency rescue switch;

responding to the operation of passengers in the elevator car, sending a reverse running signal to the elevator main controller by the input signal of the emergency rescue switch, and responding to the reverse running signal by the elevator main controller to control the elevator car to move in the direction opposite to the current running direction.

Optionally, be provided with car traffic direction operating button on the emergency rescue switch, control emergency rescue switch sends car traffic operation pilot signal, includes:

and controlling a car running direction operation button which is opposite to the current running direction of the elevator car in the emergency rescue switch to be lightened.

Optionally, after controlling the emergency rescue switch in the elevator car to pop out, the method further includes:

and if the input signal of the passenger in the elevator car is not received after the preset time period, sending a reverse running signal to the elevator main controller, wherein the elevator main controller is used for responding to the reverse running signal to control the elevator car to move in a direction opposite to the current running direction.

In a second aspect, an embodiment of the present invention further provides a rescue method for an elevator car shear accident, which is based on an elevator main controller, and includes:

acquiring current of a traction motor and a digital signal output by a rotary encoder;

judging whether the traction motor is locked based on the current of the traction motor and the digital signal output by the rotary encoder;

when the traction motor is locked, a traction motor locked-rotor alarm signal is sent to a safety controller, and the safety controller is used for responding to the traction motor locked-rotor alarm signal to judge whether a shearing accident occurs;

responding to a shearing accident alarm signal sent by the safety controller, and shielding external calls of all floors.

Optionally, after the external call of each floor is shielded in response to the shear accident alarm signal sent by the safety controller, the method further includes:

and controlling the elevator car to move in a direction opposite to the current running direction in response to a reverse running signal sent by the safety controller.

Optionally, the controlling the elevator car to move in a direction opposite to the current running direction in response to the reverse running signal issued by the safety controller includes:

controlling the elevator car to move to the nearest flat floor according to a direction opposite to the current running direction in response to a reverse running signal sent by the safety controller;

controlling to start the brake;

when receiving the feedback information of successful brake activation, controlling the brake to act so as to stop the elevator car at the nearest flat floor;

when feedback information of the starting failure of the brake is received, the traction motor is controlled through negative feedback of a current loop to maintain torque output capable of balancing the elevator car, so that the elevator car stops at the nearest flat floor;

the elevator door is controlled to open to release the trapped passenger.

In a third aspect, an embodiment of the present invention further provides an elevator car shearing accident rescue apparatus, based on a safety controller, including:

the position and state determining module is used for determining the position of the elevator car and the opening and closing state of the elevator door when receiving a traction motor locked-rotor alarm signal sent by the elevator main controller;

the shearing judgment module is used for judging whether a shearing accident occurs according to the position of the elevator car and the opening and closing state of the elevator door;

switch pops out control module for when taking place the shearing accident, control emergency rescue switch in the elevator car pops out, and to elevator main control unit sends shearing accident alarm signal, elevator main control unit is used for according to the outer calling of each floor of shearing accident alarm signal shielding.

In a fourth aspect, an embodiment of the present invention further provides an elevator car shearing accident rescue apparatus, which is based on an elevator main controller, and includes:

the acquisition module is used for acquiring the current of the traction motor and the digital signal output by the rotary encoder;

the locked-rotor judging module is used for judging whether the traction motor is locked-rotor based on the current of the traction motor and the digital signal output by the rotary encoder;

the device comprises a locked rotor alarming module, a safety controller and a control module, wherein the locked rotor alarming module is used for sending a locked rotor alarming signal of the traction motor to the safety controller when the traction motor is locked, and the safety controller is used for responding to the locked rotor alarming signal of the traction motor to judge whether a shearing accident occurs;

and the external calling shielding module is used for responding to the shearing accident alarm signal sent by the safety controller and shielding the external calling of each floor.

In a fifth aspect, an embodiment of the present invention further provides a computer device, including:

one or more processors;

storage means for storing one or more programs;

when executed by the one or more processors, cause the one or more processors to implement an elevator car cut accident rescue method as provided by the first aspect of the invention, or an elevator car cut accident rescue method as provided by the second aspect of the invention.

In a sixth aspect, embodiments of the present invention also provide a computer-readable storage medium, on which a computer program is stored, which when executed by a processor, implements an elevator car shear accident rescue method as provided in the first aspect of the present invention, or implements an elevator car shear accident rescue method as provided in the second aspect of the present invention.

The elevator car shearing accident rescue method provided by the embodiment of the invention is based on a safety controller, when a traction motor locked-rotor alarm signal sent by an elevator main controller is received, the position of the elevator car and the opening and closing state of an elevator door are determined, whether a shearing accident occurs is judged according to the position of the elevator car and the opening and closing state of the elevator door, when the shearing accident occurs, an emergency rescue switch in the car is controlled to pop up, and a shearing accident alarm signal is sent to the elevator main controller, and the elevator main controller is used for shielding an external call of each floor according to the shearing accident alarm signal. Under the condition that does not change original elevator system's control logic, avoid the non-shearing accident to lead to the erroneous judgement that haulage motor stalling arouses, avoid the safety controller constantly to acquire the data that vertical distance sensor and camera or infrared sensor gathered, the too big anomaly that probably leads to of safety controller data processing volume, system stability has been improved, when confirming the emergence shearing accident, the emergent rescue switch in the control car pops out, stranded passenger or the passenger with the ladder can in time save oneself, avoid causing the condition that the injury aggravates because of waiting for the rescue for a long time, the security has been improved.

Drawings

Fig. 1A is a flowchart of an elevator car shearing accident rescue method according to a first embodiment of the present invention;

fig. 1B is a logic diagram of rescue in case of a shear accident of an elevator car according to an embodiment of the present invention;

fig. 1C is a schematic diagram of an emergency rescue switch according to an embodiment of the present invention;

fig. 2 is a flowchart of an elevator car shearing accident rescue method provided by a second embodiment of the invention;

fig. 3 is a schematic structural diagram of an elevator car shearing accident rescue device provided by a third embodiment of the invention;

fig. 4 is a schematic structural diagram of an elevator car shearing accident rescue device provided by the fourth embodiment of the invention;

fig. 5 is a schematic structural diagram of a computer device according to a fifth embodiment of the present invention.

Detailed Description

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

Example one

Fig. 1A is a flowchart of an elevator car shearing accident rescue method according to an embodiment of the present invention, and fig. 1B is a logic diagram of an elevator car shearing accident rescue according to an embodiment of the present invention, which is applicable to a situation where an elevator car is subjected to a shearing accident and is subjected to self rescue in time, and the method may be executed by an elevator car shearing accident rescue apparatus according to an embodiment of the present invention, and the apparatus may be implemented by software and/or hardware, and is configured in a safety controller according to an embodiment of the present invention, as shown in fig. 1A and fig. 1B, the method specifically includes the following steps:

s101, when a traction motor locked-rotor alarm signal sent by an elevator main controller is received, the position of an elevator car and the opening and closing state of an elevator door are determined.

In the embodiment of the invention, the main controller of the elevator is an original controller, and the safety controller is a controller additionally arranged on the basis of an original elevator system in order to realize the scheme of the invention. The traction motor is power equipment of an elevator, also called as an elevator main machine, and has the function of conveying and transmitting power to enable an elevator car to run. When the elevator car has a shearing accident, passengers are clamped by the elevator door, the elevator car is usually clamped by a clamping device when continuously running, the rotary encoder stops rotating, the output digital signal is not changed any more, the load of the traction motor is increased, and the current of the traction motor is increased. The photoelectric rotary encoder can convert mechanical quantities such as angular displacement and angular velocity of an output shaft into corresponding electric pulses through photoelectric conversion and output the electric pulses as digital quantities. The elevator main controller can determine whether the traction motor is locked up by combining the current of the traction motor and the digital signal output by the rotary encoder. Here, it should be noted that the traction motor is always locked when a shearing accident occurs, and the shearing accident may not be always generated when the traction motor is locked, but may be caused by other reasons.

And when the elevator main controller determines that the traction motor is locked, the elevator main controller sends a traction motor locked-rotor alarm signal to the safety controller. And the safety controller determines the position of the elevator car and the opening and closing state of the elevator door when receiving a traction motor locked-rotor alarm signal sent by the elevator main controller.

Illustratively, in some embodiments of the invention, vertical distance sensors are arranged at the top and the bottom of the elevator shaft and used for collecting distance signals, and the safety controller calculates the position of the elevator car according to the distance signals. For example, the vertical distance sensor may be a laser distance sensor, and the working principle of the laser distance sensor is not described herein. In some embodiments of the invention, a camera is disposed in the elevator car or near the landing door, the camera is used for collecting images of the elevator door, and the safety controller processes the collected images and determines the current open/close state (closed or open) of the elevator door. In some embodiments of the invention, a camera is disposed in the elevator car or near the landing door, the camera is used for collecting images of the elevator door, and the safety controller processes the collected images and determines the current open/close state (closed or open) of the elevator door. In some embodiments of the present invention, an infrared sensor is disposed in the elevator door, and the safety controller determines the open/close state of the front elevator door according to an infrared signal collected by the infrared sensor. It should be noted that the above means for detecting the position of the elevator car and the open/close state of the elevator door is an exemplary description of the present invention, and is not limited thereto.

The embodiment of the invention adds the safety controller under the condition of not changing the control logic of the original elevator system, and the safety controller determines the position of the elevator car and the opening and closing state of the elevator door when receiving the traction motor locked-rotor alarm signal sent by the elevator main controller. On the one hand, the misjudgment that the locked rotor of the traction motor is caused due to the non-shearing accident can be avoided, on the other hand, the situation that the safety controller continuously acquires data collected by the vertical distance sensor and the camera or the infrared sensor is avoided, and the data processing amount of the safety controller is too large to cause abnormity.

A shear accident of the elevator car is usually caused by an accidental movement of the elevator car, i.e. when the elevator is started on a flat floor, the elevator door is not closed and the elevator car moves. In some embodiments of the invention, the method further comprises preventing accidental movement of the elevator car, and the specific process is as follows:

after the elevator car reaches the flat floor, the safety controller determines the opening and closing state of the elevator door through the infrared sensor or the camera and compares the opening and closing state with the door lock electrical signal, if the opening and closing state is consistent with the door lock electrical signal, the elevator door is considered to be closed, the safety controller sends a starting signal to the elevator main controller, the elevator main controller responds to the starting signal to control the brake to be released, and the traction motor works; if the two are not consistent, the elevator door is not closed, the safety controller cannot send a starting signal to the main controller, at the moment, even if the safety loop is closed, the brake cannot be released, and the traction motor does not work.

And S102, judging whether a shearing accident occurs according to the position of the elevator car and the opening and closing state of the elevator door.

After the position of the elevator car and the opening and closing state of the elevator door are determined, whether a shearing accident occurs is judged according to the position of the elevator car and the opening and closing state of the elevator door.

As an example, the position of the elevator car is compared with the safe position when the elevator is on level. Specifically, under normal conditions, when the elevator is on a flat floor, the position at which the elevator car stops is called a safety position. When the position of the elevator car exceeds the safe position when the elevator is on the flat floor and the opening and closing state of the elevator door is opened, the occurrence of a shearing accident is determined. If the position of the elevator car does not exceed the safe position when the elevator is on the flat floor, and the opening and closing state of the elevator door is closed, the load of the traction motor is increased probably due to other reasons, at the moment, an alarm signal can be sent to the elevator main control, the elevator main control responds to the alarm signal to control the brake to be released, the traction motor is locked, and meanwhile, the traction motor is controlled to be powered off to wait for the coming inspection and maintenance of maintenance personnel.

Namely, the embodiment of the invention further detects the position of the elevator car and the opening and closing state of the elevator door on the premise of determining the locked rotation of the traction motor, and judges whether the shearing accident occurs according to the position of the elevator car and the opening and closing state of the elevator door, thereby improving the judgment accuracy of the shearing accident.

In some embodiments of the present invention, in order to further improve the accuracy of the determination of the shear accident, after determining the position of the elevator car and the open/close state of the elevator door, the method further includes: and judging whether a passenger or an object is clamped by the elevator door according to the acquired infrared signal or the acquired image. Specifically, the infrared signal or image is processed to determine whether a passenger or object is pinched by the elevator door. When the situation that a passenger or an object is clamped by the elevator door is determined, and meanwhile, the position of the elevator car exceeds the safe position when the elevator is in a flat layer, and the opening and closing state of the elevator door is opened, the situation that a shearing accident occurs is determined.

S103, when a shearing accident occurs, controlling an emergency rescue switch in the lift car to pop up, and sending a shearing accident alarm signal to the elevator main controller.

In the embodiment of the invention, after the occurrence of a shearing accident is determined, the safety controller controls the emergency rescue switch in the lift car to pop up, and sends a shearing accident alarm signal to the main controller of the elevator. The elevator main controller responds to a shearing accident alarm signal to control the elevator to enter a maintenance running state, and can shield the external calling of each floor under the maintenance running state, namely the elevator does not respond to the external calling and runs, and the elevator is prevented from calling the elevator to cause further injury of trapped passengers due to the passengers on other floors. Fig. 1C is a schematic diagram of an emergency rescue switch according to an embodiment of the present invention, as shown in fig. 1C, where the emergency rescue switch is similar to an access switch, and the emergency rescue switch is disposed in an emergency box at a car door head, and when a shear accident occurs, a safety controller controls the emergency rescue switch in the car to bounce down (similar to an oxygen mask of an airplane in an emergency state), and a trapped passenger or other passengers on the same elevator can operate the emergency rescue switch to slowly move the elevator car in a direction opposite to a current moving direction, so as to release the trapped passenger.

Trapped passengers and passengers on the same elevator are not usually trained in elevator emergency, and therefore, the emergency rescue switch may not be operated correctly, the elevator car moves according to the current running direction, and the shearing accident is aggravated. In some embodiments of the present invention, in order to let the trapped passenger or passengers on the same elevator know how to operate the emergency rescue switch, after the emergency rescue switch in the control car is popped up, the present invention further comprises:

and controlling the emergency rescue switch to send a car operation indicating signal, wherein the car operation indicating signal is used for indicating passengers in the car to operate the emergency rescue switch. Illustratively, the emergency rescue switch is provided with an up button and a down button with indicator lights, and when the up button or the down button is triggered, the elevator car can slowly move up or down.

Specifically, the safety controller sends a reverse run signal to the elevator main controller in response to an input signal (i.e., a signal generated by a trigger button) from a passenger operating an emergency rescue switch in the car. In the embodiment of the invention, the safety controller controls the emergency rescue switch to light the car running direction operation button opposite to the current running direction of the elevator car. The elevator main controller controls the elevator car to move in a direction opposite to the current running direction in response to the reverse running signal.

Illustratively, if the elevator car is currently descending, the safety controller controls the ascending button to be lightened so as to prompt the trapped passenger or passengers on the same elevator to press the ascending button. The safety controller responds to the key operation of passengers and sends an ascending signal to the elevator main controller, and the main controller controls the elevator car to ascend slowly. If the elevator car is currently in the ascending state, the safety controller controls the descending button to be lightened so as to prompt the trapped passenger or the passenger on the same elevator to press the descending button. The safety controller responds to the key operation of passengers and sends a descending signal to the elevator main controller, and the main controller controls the elevator car to descend at a low speed. Therefore, the operation instruction is sent to the trapped passenger or the passenger on the same ladder, the risk that the shearing accident is aggravated due to the operation error of the trapped passenger or the passenger on the same ladder is avoided, and the safety is improved.

In some embodiments of the invention, considering the situation that passengers may take the elevator alone, when a shearing accident occurs, no passenger on the same elevator operates the emergency rescue switch, and if the trapped passenger cannot operate the emergency rescue switch due to serious injury, the situation that the passenger cannot save oneself in time occurs. For the situation, after the emergency rescue switch in the car is controlled to pop up, the embodiment of the invention further comprises the following steps:

if the emergency rescue switch is popped for a preset time (for example, 2 minutes), and an input signal of a passenger in the elevator car is not received (namely, no passenger operates the emergency rescue switch), a reverse operation signal is automatically sent to the elevator main controller, and the elevator main controller is used for responding to the reverse operation signal to control the elevator car to move in a direction opposite to the current operation direction. Therefore, the situation that passengers are trapped to take the elevator independently, and the emergency rescue switch cannot be operated due to serious injury, so that the passengers cannot save themselves in time is avoided, and the rescue efficiency is improved.

The elevator car shearing accident rescue method provided by the embodiment of the invention is based on a safety controller, when a traction motor locked-rotor alarm signal sent by an elevator main controller is received, the position of the elevator car and the opening and closing state of an elevator door are determined, whether a shearing accident occurs is judged according to the position of the elevator car and the opening and closing state of the elevator door, when the shearing accident occurs, an emergency rescue switch in the car is controlled to pop up, and a shearing accident alarm signal is sent to the elevator main controller, and the elevator main controller is used for shielding an external call of each floor according to the shearing accident alarm signal. Under the condition that does not change original elevator system's control logic, avoid the non-shearing accident to lead to the erroneous judgement that haulage motor stalling arouses, avoid the safety controller constantly to acquire the data that vertical distance sensor and camera or infrared sensor gathered, the too big anomaly that probably leads to of safety controller data processing volume, system stability has been improved, when confirming the emergence shearing accident, the emergent rescue switch in the control car pops out, stranded passenger or the passenger with the ladder can in time save oneself, avoid causing the condition that the injury aggravates because of waiting for the rescue for a long time, the security has been improved.

Example two

Fig. 2 is a flowchart of an elevator car shearing accident rescue method provided in the second embodiment of the present invention, and this embodiment is applicable to a situation where an elevator car is subjected to a shearing accident and is self-rescued in time, and this method can be executed by an elevator car shearing accident rescue device provided in the second embodiment of the present invention, and this device can be implemented in a software and/or hardware manner, and is configured in an elevator main controller provided in the second embodiment of the present invention, as shown in fig. 2, this method specifically includes the following steps:

s201, acquiring the current of the traction motor and the digital signal output by the rotary encoder.

Specifically, in the running process of the elevator, the elevator main controller acquires the current of the traction motor and the digital signal output by the rotary encoder in real time.

And S202, judging whether the traction motor is locked based on the current of the traction motor and the digital signal output by the rotary encoder.

As described above, when a shear accident occurs in the elevator car, the passenger is caught by the elevator door, and the elevator car is normally stopped by the catcher when it continues to operate, so that the rotation of the rotary encoder is stopped, the digital signal outputted therefrom is not changed, and the load of the traction motor is increased, and the current of the traction motor is increased. The elevator main controller can determine whether the traction motor is locked up by combining the current of the traction motor and the digital signal output by the rotary encoder. Here, it should be noted that the traction motor is always locked when a shearing accident occurs, and the shearing accident may not be always generated when the traction motor is locked, but may be caused by other reasons.

Specifically, in the embodiment of the present invention, when the current of the traction motor is greater than the preset current threshold and the digital signal output by the rotary encoder does not change any more, it is determined that the traction motor is locked.

And S203, when the traction motor is locked, sending a traction motor locked-rotor alarm signal to the safety controller, wherein the safety controller is used for responding to the traction motor locked-rotor alarm signal to judge whether a shearing accident occurs.

And when the dragging motor is determined to be locked, sending a dragging motor locked-rotor alarm signal to the safety controller. The safety controller responds to the stalling alarm signal of the traction motor to judge whether a shearing accident occurs.

Specifically, the safety controller determines the position of the elevator car and the opening and closing state of the elevator door after receiving the stalling alarm signal of the traction motor, and determines whether a shearing accident occurs according to the position of the elevator car and the opening and closing state of the elevator door. Specifically, the process of determining the position of the elevator car and the opening and closing state of the elevator door by the safety control is described in detail in the foregoing embodiments, and the embodiments of the present invention are not described herein again. The safety controller compares the position of the elevator car with the safety position of the elevator when the elevator is flat, and determines that a shearing accident occurs when the position of the elevator car exceeds the safety position of the elevator when the elevator is flat and the opening and closing state of the elevator door is open.

And S204, responding to a shearing accident alarm signal sent by the safety controller, and shielding external calls of all floors.

In the embodiment of the invention, after the occurrence of a shearing accident is determined, the safety controller controls the emergency rescue switch in the lift car to pop up, and sends a shearing accident alarm signal to the main controller of the elevator. The elevator main controller responds to a shearing accident alarm signal to control the elevator to enter a maintenance running state, and can shield the external calling of each floor under the maintenance running state, namely the elevator does not respond to the external calling and runs, and the elevator is prevented from calling the elevator to cause further injury of trapped passengers due to the passengers on other floors. The emergency rescue switch is similar to an overhaul switch, the emergency rescue switch is arranged at the top of the car, when a shearing accident happens, the safety controller controls the emergency rescue switch in the car to fall down (similar to an oxygen mask of an airplane in an emergency state), and the trapped passenger or other passengers on the same elevator can operate the emergency rescue switch to enable the elevator car to slowly move in the direction opposite to the current running direction, so that the trapped passenger is released.

Specifically, the safety controller responds to an input signal when a trapped passenger or a passenger on the same elevator operates the emergency rescue switch, and sends a reverse operation signal to the elevator main controller. The elevator main controller controls the elevator car to move in a direction opposite to the current running direction in response to the reverse running signal.

Illustratively, in one embodiment of the invention, the emergency rescue switch is controlled to send out a car running operation indicating signal, and the car running operation indicating signal is used for indicating passengers in the car to operate the emergency rescue switch. Illustratively, the emergency rescue switch is provided with an up button and a down button with indicator lights, and when the up button or the down button is triggered, the elevator car can slowly move up or down. If the elevator car is currently in the descending state, the safety controller controls the ascending button to be lightened so as to prompt the trapped passenger or the passenger on the same elevator to press the ascending button. The elevator main controller responds to the key operation of passengers and controls the elevator car to slowly move upwards. If the elevator car is currently in the ascending state, the safety controller controls the descending button to be lightened so as to prompt the trapped passenger or the passenger on the same elevator to press the descending button. The elevator main controller responds to the key operation of passengers and controls the elevator car to descend slowly. Therefore, the operation instruction is sent to the trapped passenger or the passenger on the same ladder, the risk that the shearing accident is aggravated due to the operation error of the trapped passenger or the passenger on the same ladder is avoided, and the safety is improved.

In some embodiments of the present invention, if no input signal is received from a passenger in the car (i.e., no passenger operates the emergency rescue switch) after the emergency rescue switch has popped up for a predetermined period of time (e.g., 2 minutes), a reverse run signal is automatically sent to the elevator main controller, which is configured to control the elevator car to move in a direction opposite to the current running direction in response to the reverse run signal. Therefore, the situation that passengers are trapped to take the elevator independently, and the emergency rescue switch cannot be operated due to serious injury, so that the passengers cannot save themselves in time is avoided, and the rescue efficiency is improved.

In some embodiments of the present invention, in order to avoid a situation where the elevator car travels in reverse direction for a long distance to cause a secondary shearing, the elevator car is controlled to move in a direction opposite to a current travel direction in response to a reverse travel signal from the safety controller, including:

the elevator car is controlled to move to the nearest flat floor (i.e., the flat floor where the shear accident occurs) in a direction opposite to the current running direction in response to the reverse running signal issued by the safety controller. So, can avoid elevator car reverse running distance too big to lead to the condition of secondary shearing appearing, improve the security.

After the elevator car reaches the nearest flat floor, the elevator main controller controls the brake to try to start again, and controls the brake to act when receiving the feedback information of successful brake starting, so that the elevator car stops at the nearest flat floor.

When feedback information of the starting failure of the brake is received, the failure of the brake is indicated, and the traction motor is controlled through negative feedback of a current loop to maintain torque output capable of balancing the elevator car, so that the elevator car stops at the nearest flat floor. And then controls the elevator door to open to release the trapped passenger.

The elevator car shearing accident rescue method provided by the embodiment of the invention is based on an elevator main controller, after the current of a traction motor and a digital signal output by a rotary encoder are obtained, whether the traction motor is locked up is judged based on the current of the traction motor and the digital signal output by the rotary encoder, when the traction motor is locked up, a traction motor locked up alarm signal is sent to a safety controller, and the external calling of each floor is shielded in response to the shearing accident alarm signal sent by the safety controller. Under the condition that does not change original elevator system's control logic, avoid the non-shearing accident to lead to the erroneous judgement that haulage motor stalling arouses, avoid the safety controller constantly to acquire the data that vertical distance sensor and camera or infrared sensor gathered, the too big anomaly that probably leads to of safety controller data processing volume, system stability has been improved, when confirming the emergence shearing accident, the emergent rescue switch in the control car pops out, stranded passenger or the passenger with the ladder can in time save oneself, avoid causing the condition that the injury aggravates because of waiting for the rescue for a long time, the security has been improved.

EXAMPLE III

Fig. 3 is a schematic structural diagram of an elevator car shearing accident rescue apparatus according to a third embodiment of the present invention, as shown in fig. 3, the apparatus is integrated in a safety controller, and the apparatus includes:

the position and state determining module 301 is used for determining the position of the elevator car and the opening and closing state of the elevator door when receiving a traction motor locked-rotor alarm signal sent by an elevator main controller;

the shearing judgment module 302 is used for judging whether a shearing accident occurs according to the position of the elevator car and the opening and closing state of the elevator door;

switch pops out control module 303 for when taking place the shearing accident, control emergency rescue switch in the elevator car pops out, and to elevator main control unit sends shearing accident alarm signal, elevator main control unit is used for according to the outer calling together of each floor of shearing accident alarm signal shielding.

In some embodiments of the invention, the location and status determination module 301 comprises:

the distance signal acquisition unit is used for acquiring a distance signal acquired by the vertical distance sensor;

a position determination unit for determining the position of the elevator car from the distance signal;

the infrared signal or image acquisition unit is used for acquiring an infrared signal acquired by an infrared sensor or an image acquired by a camera;

and the opening and closing state determining unit is used for determining the opening and closing state of the elevator door according to the infrared signal or the image.

In some embodiments of the present invention, the cropping determination module 302 comprises:

the position comparison unit is used for comparing the position of the elevator car with the safety position of the elevator when the elevator is leveled;

and the shearing determining unit is used for determining that a shearing accident occurs when the position of the elevator car exceeds the safe position when the elevator is on the flat floor and the opening and closing state of the elevator door is opened.

In some embodiments of the invention, the elevator car shear accident rescue apparatus further comprises:

the indicating module is used for controlling the emergency rescue switch in the elevator car to send a car operation indicating signal after the emergency rescue switch is controlled to pop up, and the elevator car operation indicating signal is used for indicating passengers in the car to operate the emergency rescue switch;

the operation signal sending module is used for responding to the operation of passengers in the elevator car, the input signal of the emergency rescue switch sends a reverse operation signal to the elevator main controller, and the elevator main controller is used for responding to the reverse operation signal to control the elevator car to move in the direction opposite to the current operation direction.

In some embodiments of the present invention, a car running direction operating button is disposed on the emergency rescue switch, and the indicating module includes:

and the button lighting unit is used for controlling the lighting of a car running direction operation button opposite to the current running direction of the elevator car in the emergency rescue switch.

In some embodiments of the invention, the elevator car shear accident rescue apparatus further comprises:

the automatic sending module is used for controlling after an emergency rescue switch in the elevator car pops out, if after the preset time, when the input signal of a passenger in the car is not received, the elevator main controller sends a reverse running signal, and the elevator main controller is used for responding to the reverse running signal to control the elevator car to move in the direction opposite to the current running direction.

The elevator car shearing accident rescue device can execute the elevator car shearing accident rescue method provided by the embodiment of the invention, and has corresponding functional modules and beneficial effects for executing the elevator car shearing accident rescue method.

Example four

Fig. 4 is a schematic structural diagram of an elevator car shearing accident rescue apparatus according to a fourth embodiment of the present invention, as shown in fig. 4, the apparatus is integrated in an elevator main controller, and the apparatus includes:

an obtaining module 401, configured to obtain a current of the traction motor and a digital signal output by the rotary encoder;

a locked rotor judging module 402, configured to judge whether the traction motor is locked rotor based on the current of the traction motor and the digital signal output by the rotary encoder;

a locked rotor alarm module 403, configured to send a locked rotor alarm signal of the traction motor to a safety controller when the traction motor is locked rotor, where the safety controller is configured to determine whether a shear accident occurs in response to the locked rotor alarm signal of the traction motor;

and an external call shielding module 404, configured to respond to the shear accident alarm signal sent by the security controller, and shield an external call of each floor.

In some embodiments of the invention, the elevator car shear accident rescue apparatus further comprises:

and the control module is used for responding to a shear accident alarm signal sent by the safety controller and shielding an external call of each floor, and then responding to a reverse running signal sent by the safety controller to control the elevator car to move in a direction opposite to the current running direction.

In some embodiments of the invention, the control module comprises:

the leveling control unit is used for responding to a reverse running signal sent by the safety controller to control the elevator car to move to the nearest leveling layer in the direction opposite to the current running direction;

the brake starting unit is used for controlling the starting of the brake;

the brake control unit is used for controlling the brake to act so as to stop the elevator car at the nearest flat floor when receiving the feedback information of successful brake starting; when feedback information of the starting failure of the brake is received, the traction motor is controlled through negative feedback of a current loop to maintain torque output capable of balancing the elevator car, so that the elevator car stops at the nearest flat floor;

and an elevator door control unit for controlling the elevator door to be opened to release the trapped passenger.

The elevator car shearing accident rescue device can execute the elevator car shearing accident rescue method provided by the second embodiment of the invention, and has corresponding functional modules and beneficial effects for executing the elevator car shearing accident rescue method.

EXAMPLE five

An embodiment of the present invention provides a computer device, and fig. 5 is a schematic structural diagram of the computer device provided in the embodiment of the present invention, as shown in fig. 5, the computer device includes:

a processor 501, a memory 502, a communication module 503, an input device 504, and an output device 505; the number of the processors 501 in the mobile terminal may be one or more, and one processor 501 is taken as an example in fig. 5; the processor 501, the memory 502, the communication module 503, the input device 504 and the output device 505 in the mobile terminal may be connected by a bus or other means, and fig. 5 illustrates the connection by the bus as an example. The processor 501, the memory 502, the communication module 503, the input device 504 and the output device 505 may be integrated on a computer apparatus.

The memory 502 is a computer-readable storage medium for storing software programs, computer-executable programs, and modules, such as the modules corresponding to the elevator car shearing accident rescue method in the above-described embodiments. The processor 501 executes various functional applications of a computer device and data processing by running software programs, instructions and modules stored in the memory 502, that is, the elevator car cut accident rescue method described above is implemented.

The memory 502 may mainly include a program storage area and a data storage area, wherein the program storage area may store an operating system, an application program required for at least one function; the storage data area may store data created according to use of the microcomputer, and the like. Further, the memory 502 may include high speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other non-volatile solid state storage device. In some examples, memory 502 may further include memory located remotely from processor 501, which may be connected to an electronic device through a network. Examples of such networks include, but are not limited to, the internet, intranets, local area networks, mobile communication networks, and combinations thereof.

The communication module 503 is configured to establish a connection with an external device (e.g., a smart terminal), and implement data interaction with the external device. The input device 504 may be used to receive input numeric or character information and generate key signal inputs related to user settings and function controls of the computer apparatus.

The computer device provided by the embodiment can execute the rescue method for the elevator car shearing accident provided by any embodiment of the invention, and has corresponding functions and beneficial effects.

EXAMPLE six

An embodiment of the present invention provides a storage medium containing computer executable instructions, where the storage medium stores a computer program, and the computer program is executed by a processor to implement the elevator car shearing accident rescue method provided in any of the above embodiments of the present invention, where the method is based on a safety controller, and includes:

when a traction motor locked-rotor alarm signal sent by an elevator main controller is received, the position of an elevator car and the opening and closing state of an elevator door are determined;

judging whether a shearing accident occurs according to the position of the elevator car and the opening and closing state of the elevator door;

when a shearing accident occurs, the emergency rescue switch in the elevator car is controlled to pop up, and the elevator main controller sends a shearing accident alarm signal and is used for shielding the external calling of each floor according to the shearing accident alarm signal.

Or, the method is based on an elevator master controller, comprising:

acquiring current of a traction motor and a digital signal output by a rotary encoder;

judging whether the traction motor is locked based on the current of the traction motor and the digital signal output by the rotary encoder;

when the traction motor is locked, a traction motor locked-rotor alarm signal is sent to a safety controller, and the safety controller is used for responding to the traction motor locked-rotor alarm signal to judge whether a shearing accident occurs;

responding to a shearing accident alarm signal sent by the safety controller, and shielding external calls of all floors.

It should be noted that, as for the apparatus, the device and the storage medium embodiments, since they are basically similar to the method embodiments, the description is relatively simple, and in relevant places, reference may be made to the partial description of the method embodiments.

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 instructions for enabling a computer device (which may be a robot, a personal computer, a server, or a network device) to execute the elevator car shearing accident rescue method according to any embodiment of the present invention.

It should be noted that, in the above apparatus, each module and unit included in the apparatus is only divided according to functional logic, but is not limited to the above division as long as the corresponding function can be realized; in addition, the specific names of the functional modules 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, the various steps or methods may be implemented in software or firmware stored in memory and executed by suitable instruction execution devices. 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 herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean 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 is only illustrative of the preferred embodiments of the present invention and the technical principles 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 greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.