CN113460823A

CN113460823A - Door lock short-circuit fault diagnosis system, method, equipment and storage medium

Info

Publication number: CN113460823A
Application number: CN202010248122.8A
Authority: CN
Inventors: 黄鸣丰; 钱建新; 姜晓道; 鹿旭
Original assignee: Suzhou Inovance Technology Co Ltd
Current assignee: Suzhou Inovance Technology Co Ltd
Priority date: 2020-03-31
Filing date: 2020-03-31
Publication date: 2021-10-01
Anticipated expiration: 2040-03-31
Also published as: CN113460823B

Abstract

The invention provides a door lock short circuit fault diagnosis system, a method, equipment and a storage medium, wherein the system comprises a first electronic safety controller, a second electronic safety controller and an elevator main controller; the elevator master controller sends a door operation signal to the second electric safety controller; the first electronic safety controller is connected with the car door lock signal output end and used for acquiring a first state signal comprising the state of the car door lock and sending the first state signal to the second electronic safety controller; and the second electronic safety controller is connected with the hall door lock signal output end and is used for acquiring a second state signal comprising the state of the hall door lock and judging whether short-circuit faults exist in the hall door lock and the car door lock according to the received door operation state, the first state signal and the second state signal, wherein the second state signal comprises the state of the hall door lock. The embodiment of the invention can simplify the electrical connection structure of the door lock loop and simplify the short-circuit fault diagnosis logic of the door lock loop.

Description

Door lock short-circuit fault diagnosis system, method, equipment and storage medium

Technical Field

The invention relates to the field of elevator systems, in particular to a door lock short-circuit fault diagnosis system, method, equipment and storage medium.

Background

With the development of cities, high-rise buildings rise frequently, and the use of elevators is more and more popular. The elevator is a device which vertically moves among different floors in a shaft, a car door is arranged on an elevator car, a shaft door is correspondingly arranged on the wall of the shaft and leads to each floor, and passengers can get in and out of the car by opening the car door and the shaft door.

The door lock signal is one of key signals for ensuring the safe operation of the elevator, and the elevator is allowed to operate on the premise that all door lock switches are closed. The occurrence of a short circuit in the door lock signal is an important fault affecting the safe operation of the elevator. As shown in fig. 1, in order to detect the door lock signal, a method commonly used at present is to serially connect door lock switches K1-K4 one by one, and connect a plurality of connection points at the tail end and in the middle to a plurality of detection points a 1-a 4 of an elevator control system through cables to assist in detection. Because the door lock switches are connected in series, the door lock short circuit safety circuit board needs to be added for short circuit detection of the door lock switches, and diagnosis is realized by controlling the safety circuit board to short circuit part of the door lock circuit through software running in an elevator control system.

In the scheme, the tail end of the door lock switch and a plurality of detection points in the middle of the door lock switch are connected to an elevator control system, so that an additional traveling cable and a well cable are needed, a door lock short-circuit safety circuit board is needed to be added, the cost of the cable and the door lock short-circuit safety circuit board is high, and the control software needs to compile a complex diagnosis time sequence to complete diagnosis.

Disclosure of Invention

The embodiment of the invention provides a door lock short-circuit fault diagnosis system, method, equipment and storage medium, aiming at the problems of higher cost and complex diagnosis software time sequence of the door lock short-circuit fault diagnosis scheme.

The technical scheme for solving the technical problems in the embodiment of the invention is to provide a door lock short circuit fault diagnosis system, which comprises a first electronic safety controller, a second electronic safety controller and an elevator main controller, wherein the first electronic safety controller is connected with the second electronic safety controller through a first communication link, and the second electronic safety controller is connected with the elevator main controller through a second communication link;

the elevator master controller sending a door operation signal including a door operation state to the second electric safety controller;

the first electronic safety controller is connected with a car door lock signal output end and used for acquiring a first state signal comprising the state of a car door lock through the car door lock signal output end and sending the first state signal to the second electronic safety controller;

and the second electronic safety controller is connected with the hall door lock signal output end and used for acquiring a second state signal comprising the state of the hall door lock through the hall door lock signal output end and judging whether short-circuit faults exist in the hall door lock and the car door lock according to the received door operation state, the first state signal and the second state signal.

Preferably, the door operation state of the second electronic safety controller in the door operation signal includes that any hall door or car door is opened, and when the car door lock corresponding to the opened car door or the hall door lock corresponding to the opened hall door is continuously conducted within a first preset time, it is confirmed that the car door lock or the hall door lock is in a short circuit fault.

Preferably, the door operation signal includes a first door operation signal and a second door operation signal, the door operation state in the first door operation signal includes that a first hall door or a first car door is opened, and the door operation state in the second door operation signal includes that a second hall door or a second car door is opened;

if the second electronic safety controller receives the first door operation signal and the second door operation signal at the same time, the second electronic safety controller confirms that the corresponding first car door lock, the first hall door lock, the second car door lock and the second hall door lock are locked in a short circuit fault when any one of the first car door lock corresponding to the first car door opened in the first door operation signal and the second door operation signal, the first hall door lock corresponding to the first hall door opened, the second car door lock corresponding to the second car door opened and the second hall door lock corresponding to the second hall door opened is continuously conducted within a second preset time after the first door operation signal and the second door operation signal are received;

if the second electronic safety controller receives the first door operation signal and the second door operation signal at a third preset time interval, the second electronic safety controller confirms that the first car door lock or the first hall door lock is in a short circuit fault when the first car door lock corresponding to the first car door opened in the first door operation signal or the first hall door lock corresponding to the first hall door is continuously conducted within a fourth preset time after the second electronic safety controller receives the first door operation signal; and the second electronic safety controller confirms that the second car door lock or the second hall door lock is latched in a short-circuit fault when the second car door corresponding to the second car door opened in the second door operation signal or the second hall door lock corresponding to the second hall door opened in the second door operation signal is continuously conducted within a fifth preset time after receiving the second door operation signal.

Preferably, the door operation signals include a third door operation signal and a fourth door operation signal, the door operation state in the third door operation signal includes the first hall door or the first car door being closed, and the door operation state in the fourth door operation signal includes the second hall door or the second car door being closed;

if the second electronic safety controller receives the third door operation signal and the fourth door operation signal at the same time, the second electronic safety controller confirms that the first car door lock, the first hall door lock, the second car door lock and the second hall door lock are locked in a short circuit fault when the difference between the conduction time of the first car door lock corresponding to the first car door closed in the third door operation signal or the first hall door corresponding to the first hall door and the conduction time of the second car door lock corresponding to the second car door closed in the fourth door operation signal or the second hall door lock corresponding to the second hall door is greater than sixth preset time;

and if the second electronic safety controller receives the third door operation signal and the fourth door operation signal at a seventh preset time interval, the second electronic safety controller confirms that the first car door lock, the first hall door lock, the second car door lock and the second hall door lock are locked in a short circuit fault when the difference between the conduction times of the first car door lock corresponding to the first car door closed in the door operation state of the third door operation signal or the first hall door lock corresponding to the first hall door and the conduction times of the second car door lock corresponding to the second car door closed in the door operation state of the fourth door operation signal or the second hall door lock corresponding to the second hall door is greater than eighth preset time.

Preferably, the second electronic safety controller comprises a first electronic safety board, the second electronic safety controller comprises a second electronic safety board and K third electronic safety boards, and K is an integer greater than or equal to 0;

the first electronic safety board is connected with a plurality of car door lock signal output ends and used for acquiring a first state signal comprising the state of the car door lock through the car door lock signal output ends and sending the first state signal to the second electronic safety controller;

the second electronic safety plate and each third electronic safety plate are respectively connected with a plurality of hall door lock signal output ends and used for acquiring a second state signal comprising the hall door lock state through the hall door lock signal output ends, and each third electronic safety plate sends the second state signal to the second electronic safety plate.

Preferably, the door lock short-circuit fault diagnosis system comprises a switch assembly and an elevator brake control device, the switch assembly is connected in series in a power supply loop of the elevator brake control device, and the second electronic safety controller controls the switch assembly to be disconnected when the state of any hall door lock or car door lock is abnormal.

The embodiment of the invention also provides a door lock short circuit fault diagnosis method, which comprises the following steps:

acquiring a door operation signal sent by an elevator main controller, and analyzing the door operation signal to obtain a door operation state;

acquiring a first state signal sent by a first electronic safety controller, and analyzing the first state signal to acquire the state of a car door lock connected with the first electronic safety controller;

acquiring a second state signal comprising the state of a hall door lock connected with the second electronic safety controller;

and judging whether short-circuit faults exist in the hall door lock and the car door lock according to the first state signal, the second state signal and the door operation state.

Preferably, the judging whether there is a short circuit fault in the hall door lock and the car door lock according to the first state signal, the second state signal and the door operation state includes:

the door operation state of the second electronic safety controller in the door operation signal comprises any one opened landing door or car door, and when the car door lock corresponding to the opened car door in the door operation state or the landing door lock corresponding to the opened landing door is continuously conducted within a first preset time, the car door lock or the landing door lock is confirmed to be in a short circuit fault.

according to first status signal, second status signal and door operating condition judge whether there is the short circuit trouble in room lock, sedan-chair door lock, include:

if the second electronic safety controller receives the first door operation signal and the second door operation signal at a third preset time interval, the second electronic safety controller confirms that the first car door lock or the first hall door lock is in a short circuit fault when the first car door lock corresponding to the first car door opened in the first door operation signal or the first hall door lock corresponding to the first hall door is continuously conducted within a fourth preset time after the second electronic safety controller receives the first door operation signal; and the second electronic safety controller confirms that the second car door lock or the second hall door lock is latched in a short-circuit fault when the second car door lock corresponding to the opened second car door in the second door operation signal or the second hall door lock corresponding to the opened second hall door is continuously conducted within a fifth preset time after receiving the second door operation signal.

if the second electronic safety controller receives the third door operation signal and the fourth door operation signal at the same time, the second electronic safety controller confirms that the first car door lock, the first hall door lock, the second hall door lock and the second hall door lock are locked at a short circuit fault when the difference between the conduction times of the first car door lock corresponding to the first car door closed in the third door operation signal or the first hall door lock corresponding to the first hall door and the second car door lock corresponding to the second car door closed in the fourth door operation signal or the second hall door lock corresponding to the second hall door is greater than sixth preset time;

and if the second electronic safety controller receives the third door operation signal and the fourth door operation signal at a seventh preset time interval, the second electronic safety controller confirms that the first car door lock, the first hall door lock, the second car door lock and the second hall door lock are locked in short circuit faults when the difference between the conduction times of the first car door lock corresponding to the first car door closed in the third door operation signal or the first hall door lock corresponding to the first hall door and the conduction time of the second car door lock corresponding to the second car door closed in the fourth door operation signal or the second hall door lock corresponding to the second hall door is greater than eighth preset time.

The embodiment of the invention also provides door lock short circuit fault diagnosis equipment, which comprises a first electronic safety controller, a second electronic safety controller and an elevator main controller, wherein the first electronic safety controller comprises a first memory and a first processor, and a computer program which can run on the first processor is stored in the first memory; the second electronic safety controller comprises a second memory and a second processor, and the second memory stores a computer program which can run on the second processor; the first processor, the second processor and the third processor realize the steps of the door lock short-circuit fault diagnosis method when executing the computer program.

The embodiment of the invention also provides a computer readable storage medium, wherein a computer program is stored on the computer readable storage medium, and when the computer program is executed by a processor, the steps of the door lock short-circuit fault diagnosis method are realized.

According to the door lock short-circuit fault diagnosis system, method, equipment and storage medium provided by the embodiment of the invention, the states of the car door lock and the hall door lock are respectively obtained through the first electronic safety controller and the second electronic safety controller, and whether the door lock has a short-circuit fault is judged by combining the door operation state from the elevator main controller, so that the electrical connection structure of a door lock loop can be simplified, the short-circuit fault diagnosis logic of the door lock loop is simplified, and the diagnosis precision is improved.

Drawings

FIG. 1 is a schematic structural diagram of a conventional door lock short-circuit fault diagnosis system;

FIG. 2 is a schematic diagram of a door lock short fault diagnosis system provided by an embodiment of the invention;

FIG. 3 is a schematic diagram of a door lock short-circuit fault diagnosis system according to another embodiment of the present invention;

FIG. 4 is a schematic flow chart of a door lock short-circuit fault diagnosis method according to an embodiment of the present invention;

fig. 5 is a schematic flow chart illustrating a process of determining whether a short-circuit fault exists in the door lock short-circuit fault diagnosis method according to the embodiment of the present invention;

fig. 6 is a schematic flow chart illustrating a process of determining whether a short-circuit fault exists in a door lock short-circuit fault diagnosis method according to another embodiment of the present invention;

fig. 7 is a schematic flow chart illustrating a process of determining whether a short-circuit fault exists in a door lock short-circuit fault diagnosis method according to a further embodiment of the present invention;

fig. 8 is a schematic diagram of a door lock short fault diagnosis device provided by an embodiment of the invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

As shown in fig. 1, the schematic diagram of the door lock short-circuit fault diagnosis system provided in the embodiment of the present invention is shown, and the door lock short-circuit fault diagnosis system can realize positioning of a short-circuit fault of an elevator door lock (a hall door lock and a car door lock), that is, can quickly detect whether a short-circuit fault occurs in the hall door lock and the car door lock of an elevator, and quickly determine the position of the faulty door lock when the short-circuit fault occurs. The door lock short circuit fault diagnosis system of the embodiment comprises a first electronic safety controller 11, a second electronic safety controller 12 and an elevator main controller 13; the elevator main controller 13 is used for controlling elevator operation, such as controlling the elevator car to move up, down, stop, open and close the hoistway door and the car door. The first electronic Safety controller 11 and the second electronic Safety controller 12 are based on PESSRAL (Programmable Electric Systems in Safety Related Applications for Lifts), that is, the first electronic Safety controller 11 and the second electronic Safety controller 12 respectively satisfy requirements of PESSRAL, the first electronic Safety controller 11 and the second electronic Safety controller 12 are respectively installed at different positions of the lift system, and the first electronic Safety controller 11 and the second electronic Safety controller 12 are in communication connection. In particular, the first electric safety controller 11 and the second electric safety controller 12 may each include one or more printed circuit boards integrated with corresponding electronic components.

In this embodiment, the elevator main controller 13 is in communication with said second electric safety controller 12 and sends a door operation signal including the door operation status to the second electric safety controller 12. Specifically, the door operation signal may be generated according to a door opening command (i.e., a door opening command sent by the elevator main controller 13 to the car roof panel, and a door operator controller according to the door opening command), or may be generated according to a door opening feedback signal of the car roof panel.

The first electronic safety controller 11 is independent of the car top plate, is used for acquiring the state of the car door lock, and comprises a first communication unit and at least one first terminal, each first terminal is connected with a car door lock signal output end (the car door lock signal output end can be connected with one or more car door lock switches K11 connected in series and corresponds to the on-off state of the one or more car door lock switches K11 connected in series), and the first communication unit is connected to the serial communication bus. Since the first terminal is connected to the car door lock signal output terminal, and the signal of the car door lock signal output terminal represents the state (i.e., on or off) of the car door lock switch K11, the first electric safety controller 11 can obtain the state of the car door lock switch K11 through the first terminal. The first electric safety controller 11 can encapsulate the states of all car door locks into a first state signal (the first state signal includes identification information and state information of the first terminal), and send the first state signal to the second electric safety controller 12 through the first communication unit. And, the first electric safety controller 11 may transmit the first status signal to the second electric safety controller 12 at a preset period. For optimal short-circuit fault location, the number of the first terminals may be the same as the number of the car door lock switches K11, so that the first electric safety controller 11 can obtain the state of each car door lock switch K11 through the first terminals.

The second electronic safety controller 12 includes a second communication unit, a third communication unit, and at least one second terminal, each of which is connected to a hall door lock signal output terminal (the hall door lock signal output terminal can be connected to one or more hall door lock switches K21 connected in series and corresponds to the on/off state of the one or more hall door lock switches K21 connected in series). Since the second terminal is connected to the hall lock signal output terminal and the signal at the hall lock signal output terminal represents the state of hall lock switch K21 (i.e., on or off), second electric safety controller 12 can obtain the state of hall lock switch K21 through the second terminal. In this embodiment the second communication unit is connected to the serial communication bus and the third communication unit is connected to the elevator main control 13 via a communication line, i.e. the second electric safety controller 12 receives the first status signal of the first electric safety controller 11 via the second communication unit and the door operating signal of the elevator main control via the third communication unit. For optimal short-circuit fault location, the number of the second terminals may be the same as the number of hall lock switches K21, so that the second electric safety controller 12 can obtain the state of each hall lock switch K21 through the second terminals.

The second electronic safety controller 12 also determines whether a short circuit fault exists in the hall door lock and the car door lock according to the state of the hall door lock, the state of the car door lock in the first state signal, and the door operation state in the door operation signal.

According to the door lock short-circuit fault diagnosis system, the states of the car door lock switch K11 and the hall door lock switch K21 are respectively obtained through the first electronic safety controller 11 and the second electronic safety controller 12, and whether a short-circuit fault exists in the door lock is judged by combining the door operation state from the elevator main controller 13, so that the electrical connection structure of a door lock loop can be simplified, the short-circuit fault diagnosis logic of the door lock loop is simplified, and the diagnosis precision is improved.

In one embodiment of the present invention, second electric safety controller 12 confirms that there is a short circuit fault in door lock switch K11 connected to the first terminal or hall door lock switch K21 connected to the second terminal when the door operation state includes any one of the hall door or car door being opened and the first terminal corresponding to the opened car door in the above-described door operation state or the second terminal corresponding to the opened hall door in the door operation state is continuously valid for a preset time.

Specifically, when the elevator main controller 13 opens only one car door, after a certain time elapses after the second electronic safety controller 12 receives the door operation signal (at this time, it is considered that the door controller has opened the car door and the corresponding hall door), the second electronic safety controller 12 detects the corresponding car door lock state (i.e., the input signal of the corresponding first terminal) and hall door lock state (i.e., the input signal of the corresponding second terminal), and if the car door lock signal or the hall door lock signal is continuously valid (i.e., the corresponding car door lock switch K11 or the hall door lock switch K21 remains closed), the second electronic safety controller 12 confirms that the car door lock switch K11 or the hall door lock switch K21 is short-circuited.

When the elevator main controller 13 opens two car doors, the door operation signal sent by the elevator main controller 13 to the second electronic safety controller 12 includes a first door operation signal and a second door operation signal, wherein the door operation state in the first door operation signal includes that the first hall door or the first car door is opened, and the door operation state in the second door operation signal includes that the second hall door or the second car door is opened;

if the second electronic safety controller 12 receives the first door operation signal and the second door operation signal at the same time, the second electronic safety controller 12 confirms that the corresponding first car door lock, the first hall door lock, the second car door lock and the second hall door lock are locked in a short circuit fault when any one of the first car door lock corresponding to the first car door opened in the first door operation signal and the second door operation signal, the first hall door lock corresponding to the first hall door opened, the second car door lock corresponding to the second car door opened and the second hall door lock corresponding to the second hall door opened is continuously conducted within a second preset time after the first door operation signal and the second door operation signal are received. That is, the elevator main controller 13 controls the two car doors to be opened simultaneously, after a certain time (i.e., a second preset time) elapses after the door opening instruction is sent, the door operator controller determines that the two car doors and the corresponding hall door are opened, and at this time, if the second electronic safety controller 12 detects that the corresponding door lock signal is continuously valid, the second electronic safety controller 12 confirms that the corresponding door lock is short-circuited.

If the second electronic safety controller 12 receives the first door operation signal and the second door operation signal sequentially (for example, at an interval of a third preset time), the second electronic safety controller 12 confirms that the first car door lock or the first hall door lock is latched in a short-circuit fault when the first car door lock corresponding to the first car door opened in the first door operation signal or the first hall door lock corresponding to the first hall door opened in the first door operation signal is continuously conducted within a fourth preset time after the first door operation signal is received; and the second electronic safety controller 12 confirms that the second car door lock or the second hall door lock is latched in the short-circuit fault when the second car door lock corresponding to the opened second car door in the second door operation signal or the second hall door lock corresponding to the opened second hall door is continuously conducted within a fifth preset time after receiving the second door operation signal. That is, the elevator main controller 13 controls to open a car door first, and after a certain time (i.e. a fourth preset time) elapses after sending a door opening instruction, if the second electronic safety controller 12 detects that the door lock corresponding to the car door and the hall door is disconnected, it is determined that the side door lock is not short-circuited; at this time, the elevator main controller 13 controls to open another car door, the second electronic safety controller 12 detects whether the door lock corresponding to the car door and the hall door on the other side is short-circuited, and if the door lock of the car door or the hall door which is opened later is continuously effective (i.e. not disconnected), it is determined that the car door lock or the hall door on the one side which is opened later is latched in the short-circuit fault.

In addition, in another embodiment of the invention, the short-circuit fault can be judged in the time-sharing door closing process on the basis that the two doors are opened simultaneously. Specifically, the door operation signals sent by the elevator main controller 13 to the second electric safety controller 12 include a third door operation signal and a fourth door operation signal, wherein the door operation state in the third door operation signal includes the first hall door or the first car door being closed, and the door operation state in the fourth door operation signal includes the second hall door or the second car door being closed.

If the second electronic safety controller 12 receives the third door operation signal and the fourth door operation signal at the same time, the second electronic safety controller 12 confirms that the first car door lock, the first hall door lock, the second car door lock, the second hall door lock and the second hall door lock are in short circuit fault when the difference between the conduction time of the first car door lock corresponding to the first car door closed in the third door operation signal or the first hall door lock corresponding to the first hall door closed in the third door operation signal and the conduction time of the second car door lock corresponding to the second car door closed in the fourth door operation signal or the second hall door lock corresponding to the second hall door closed in the fourth door operation signal is greater than sixth preset time.

If the second electronic safety controller 12 receives the third door operation signal and the fourth door operation signal every seventh preset time, the second electronic safety controller 12 confirms that the first car door lock, the first hall door lock, the second hall door lock and the second hall door lock are in short circuit fault when the difference between the conduction time of the first car door lock corresponding to the first car door closed in the third door operation signal or the conduction time of the first hall door lock corresponding to the first hall door closed in the third door operation signal and the conduction time of the second car door lock corresponding to the second car door closed in the fourth door operation signal or the conduction time of the second hall door lock corresponding to the second hall door closed in the fourth door operation signal is greater than eighth preset time. That is, when the elevator controller 13 adopts the time-sharing door closing mode, one car door is controlled to close first, and the other car door is closed after time delay, the second electronic safety controller 12 detects the time difference of the conduction of the door locks on the two sides, and if the conduction time difference is far shorter than the time delay of door closing, it is determined that the door lock has a short circuit.

As shown in fig. 3, in the door lock short-circuit fault diagnosis system provided by another embodiment of the present invention, a first electronic safety controller 11, a second electronic safety controller 12 and an elevator main controller 13 are also included. In this embodiment, the first electronic safety controller 11 includes a first electronic safety board 111, the first electronic safety board 111 is mountable to the top of the car, and the first electronic safety board 111 includes a first logic processing unit, a first communication unit, and M first terminals, where M is an integer greater than or equal to 1.

Specifically, the first logic processing Unit may adopt a Micro Controller Unit (MCU), a Programmable Logic Controller (PLC), or the like. Each first terminal is connected to a car door lock signal output end, and each car door lock signal output end is connected to a low-voltage power supply through a car door lock switch K11 or a plurality of car door lock switches K11 connected in series; through the first terminal, the first logic processing unit is connected with all hall door lock output signal ends, so that the first logic processing unit can acquire the state of each car door lock switch K11 or a plurality of car door lock switches K11 serial loop in real time through the first terminal, namely when the car door lock switch K11 is closed, the first logic processing unit detects that the corresponding first terminal is high level, and when the car door lock switch K11 is disconnected, the first logic processing unit detects that the corresponding first terminal is low level. In this embodiment, the first logic processing unit packages the states of all car door locks into a first state signal and then sends the first state signal to the first communication unit, so that the first state signal is sent to the serial communication bus through the first communication unit.

In another embodiment of the present invention, the second electronic safety controller 12 includes a second electronic safety board 121, the second electronic safety board 121 is mountable in a computer room, and the second electronic safety board 121 includes a second logic processing unit, a second communication unit, a third communication unit and N second terminals, where N is an integer greater than or equal to 1.

Similarly, the second logic processing unit may adopt a micro control unit, a programmable logic controller, and the like. Each second terminal is connected with one hall door lock signal output end, each hall door lock signal output end is connected with a low-voltage power supply through one hall door lock switch K21 or a plurality of hall door lock switches K21 which are connected in series, and the second logic processing unit is connected with all hall door lock signal output ends through the second terminals, so that the second logic processing unit can acquire the state of each hall door lock switch K21 or a plurality of hall door lock switches K21 serial loop (the states of the hall door locks form second state signals) in real time through the second terminals, namely when the hall door lock switches K21 are closed, the second logic processing unit detects that the corresponding second terminals are high level, and when the hall door lock switches K21 are disconnected, the second logic processing unit detects that the corresponding second terminals are low level.

The second logic processing unit is respectively connected with the second communication unit and the third communication unit, analyzes the first state signal received by the second communication unit to obtain the state of the car door lock, analyzes the door operation signal received by the third communication unit to obtain the door operation state, and judges whether the short-circuit fault exists in the car door lock and the hall door lock according to the state of the car door lock, the state of the car door lock and the door operation state.

In a further embodiment of the present invention, the second electronic security controller 12 may include one second electronic security board 121 and K third electronic security boards 122, K being an integer greater than or equal to 1, and the second electronic security board 121 includes a second logic processing unit, a second communication unit, and a third communication unit, each third electronic security board 122 includes a third logic processing unit, a fourth communication unit, and L second terminals, L being an integer greater than or equal to 1.

The third logic processing unit can adopt a micro control unit, a programmable logic controller and the like. Each second terminal is connected with one hall door lock signal output end, each hall door lock signal output end is connected to a low-voltage power supply through one hall door lock switch K21 or a plurality of hall door lock switches K21 connected in series, and the third logic processing unit is connected with all hall door lock signal output ends through the second terminals, so that the third logic processing unit can acquire the state of each hall door lock switch K21 or a plurality of hall door lock switches K21 in series connection with a loop in real time through the second terminals, namely when the hall door lock switches K21 are closed, the third logic processing unit detects that the corresponding second terminals are high level, and when the hall door lock switches K21 are disconnected, the third logic processing unit detects that the corresponding second terminals are low level. In this embodiment, the third logic processing unit packages the statuses of all hall door locks into a second status signal and transmits the second status signal to the fourth communication unit, and the fourth communication unit transmits the second status signal to the serial communication bus.

The second logic processing unit is respectively connected with the second communication unit and the third communication unit, analyzes the first state signal received by the second communication unit to obtain the state of the car door lock, analyzes the second state signal received by the second communication unit to obtain the state of the hall door lock, analyzes the door operation signal received by the third communication unit to obtain the door operation state, and judges whether the hall door lock and the car door lock have short-circuit faults according to the state of the hall door lock, the state of the car door lock and the door operation state.

In another embodiment of the invention, the door lock short-circuit fault diagnosis system can also realize fault shutdown control. Specifically, as shown in fig. 3, the door lock short-circuit fault diagnosis system of this embodiment may further include a switch component 14 and an elevator brake control device 15, where the switch component 14 is connected in series between the power supply and the elevator brake control device 15, and the elevator brake control device 15 may include an operating contactor coil and a band-type brake contactor coil, and the like, and the band-type brake and the release control of the elevator band-type brake device are implemented through the operating contactor coil and the band-type brake contactor coil. When the state of any car door lock or hall door lock is abnormal (i.e. the hall door lock or car door lock is short-circuited), the second logic processing unit of the second electronic safety controller 12 controls the switch assembly 14 to be switched off, so that the elevator brake control device 15 is powered off, the elevator brake device is braked, and the elevator stops running.

The switch assembly 14 may be a safety relay or a semiconductor switch element. Also, the switch assembly 14 may be integrated into the second electric safety controller 12.

The second logic processing unit of the second electric safety controller 12 can output the door lock short fault information and the identification of the faulty first and second terminals to the elevator main controller 13. Specifically, as shown in fig. 3, the second logic processing unit outputs the door lock short fault information and the identification of the first and second terminals of the fault to the elevator main controller 13 through the third communication unit. So that the relevant personnel can obtain the door lock with the short circuit fault through the elevator main controller 13.

In addition, the second logic processing unit of the second electrical safety controller 12 can also output the identification of the failed first terminal and second terminal to a separate display device. Namely, the door lock short-circuit fault diagnosis system further comprises a display device 16, the second electronic safety controller 12 is connected with the display device 16, and the identifications of the first terminal and the second terminal which are in fault are output to the display device 16 to be displayed, so that related personnel can obtain the door lock with the fault in the safety loop through the display device 16.

The embodiment of the invention also provides a door lock short circuit fault diagnosis method, which can be executed by a second electronic safety controller independent of the motor main controller, and the second electronic safety controller is in communication connection with one or more first electronic safety controllers through a safety serial bus and is in communication connection with the elevator main controller through a common communication bus. The first electronic safety controller and the second electronic safety controller are respectively based on the PESSRAL, namely the first electronic safety controller and the second electronic safety controller respectively meet the requirements of the PESSRAL, and the first electronic safety controller and the second electronic safety controller are respectively installed at different positions of the elevator system. The method specifically comprises the following steps:

step S41: and the second electronic safety controller acquires a door operation signal sent by the elevator main controller and analyzes the door operation signal to acquire a door operation state. Specifically, the door operation signal may be generated according to a door opening command (i.e., a door opening command sent by the elevator main controller to the car roof panel, and a door operator controller according to the door opening command), or may be generated according to a door opening feedback signal of the car roof panel.

Step S42: the second electronic safety controller acquires the first state signal sent by the first electronic safety controller, and analyzes the first state signal to acquire the state of the car door lock signal output end (namely the state of the car door lock) connected with the first electronic safety controller.

Specifically, first electronic safety controller accessible first terminal is connected with sedan-chair door lock signal output to the level of first terminal has represented the state of sedan-chair door lock promptly, and first electronic safety controller accessible first terminal's level obtains the state of sedan-chair door lock. The first electric safety controller can package the states of all car door locks into a first state signal and send the first state signal to the second electric safety controller. And, the first electric safety controller may transmit the first status signal to the second electric safety controller according to a preset period. In order to achieve the best short-circuit fault positioning effect, the number of the first terminals can be the same as that of the car door locks, so that the first electronic safety controller can obtain the state of each car door lock through the first terminals.

Step S43: and the second electronic safety controller acquires a second state signal of the connected hall door lock signal output end. Specifically, the second electric safety controller may include a plurality of second terminals and be connected to the hall lock signal output terminal through the plurality of second terminals. The second terminal may be integrated into the second electric safety controller and the second electric safety controller may comprise one or more printed circuit boards.

Since the second terminal is connected to the hall door lock signal output terminal, the level of the second terminal represents the state of the hall door lock, and therefore the second electronic safety controller can acquire the state of the hall door lock through the level of the second terminal. For optimal short-circuit fault positioning effect, the number of the second terminals can be the same as that of the hall door locks, so that the second electronic safety controller can obtain the state of each hall door lock through the second terminals.

Step S44: and the second electronic safety controller judges whether short-circuit faults exist in the hall door lock and the car door lock according to the first state signal, the second state signal and the door operation state.

Specifically, as shown in fig. 5, when the elevator main controller opens only one car door and the corresponding hall door, that is, the door operation state in the door operation signal from the elevator main controller includes that either hall door or car door is opened, the second electronic safety controller may determine whether there is a short circuit fault in the hall door lock and the car door lock by:

step S501: the second electric safety controller reads the door operation signal from the elevator main controller and obtains the hall door or car door opened in the door operation state.

Step S502: and judging whether the hall door lock corresponding to the opened hall door or the car door lock corresponding to the car door is conducted or not in the door operation state. If the hall door lock or the car door lock is turned on, that is, the corresponding hall door lock or car door lock is closed, step S503 is executed, otherwise, step S505 is executed.

Step S503: it is determined whether a first preset time (corresponding to a delay time for the opening of the hall or car door from the reception of the door operation signal) has been reached. If the first preset time is reached, step S504 is executed, otherwise, step S503 is returned to.

Step S504: and confirming that the car door lock or the hall door lock is latched in the short circuit fault.

Step S505: and (5) confirming five short circuit faults of the car door lock or the hall door lock.

As shown in fig. 6, when the elevator main controller opens two car doors and corresponding hall doors (i.e., the door operation signals include a first door operation signal and a second door operation signal, and the door operation state in the first door operation signal includes that the first hall door or the first car door is opened, and the door operation state in the second door operation signal includes that the second hall door or the second car door is opened), and the elevator main controller successively opens the two car doors and the corresponding hall doors (i.e., the elevator main controller sends the first door operation signal and the second door operation signal at intervals according to a third preset time interval), the second electronic safety controller can determine whether the hall door lock and the car door lock have short circuit faults in the following manners:

step S601: and reading a first door operation signal sent by the elevator main controller, and acquiring a first hall door or a first car door opened in the door operation state.

Step S602: and judging whether the first hall door lock corresponding to the first hall door or the first car door lock corresponding to the first car door is disconnected or not, and executing the step S605 when the first hall door lock or the first car door lock is disconnected, or executing the step S603.

Step S603: it is determined whether a third preset time (corresponding to a delay time for opening the first hall door or the second car door since the first door operation signal is received) has been reached, and if the third preset time has been reached, step S604 is performed, otherwise step S602 is performed.

Step S604: and confirming that the first hall door lock or the first car door latch is in the short circuit fault.

Step S605: and confirming that the first hall door lock or the first car door lock has no short circuit fault.

Step S606: and reading a second door operation signal sent by the elevator main controller, and acquiring a second hall door or a second car door opened in the door operation state.

Step S607: and judging whether a second hall door lock corresponding to the second hall door or a second car door lock corresponding to the second car door is disconnected or not, executing step 609 when the second hall door lock or the second car door lock is disconnected, and otherwise executing step 608.

Step S608: it is determined whether a fourth preset time (corresponding to a delay time for opening the second hall door or the second car door from the reception of the second door operation signal) has been reached, and if the fourth preset time has been reached, step S610 is performed, otherwise step S607 is performed.

Step S609: and confirming that the second hall door lock or the second car door lock has no short circuit fault.

Step S610: and confirming that the second hall door lock or the second car door latch is in the short circuit fault.

In another embodiment of the present invention, when the elevator main controller simultaneously opens two car doors and corresponding hall doors (i.e., the elevator main controller simultaneously receives the first door operation signal and the second door operation signal), the second electronic safety controller determines that the corresponding first car door lock, the first hall door lock, the second car door lock, and the second hall door lock are in short circuit fault when the first car door lock corresponding to the first car door opened in the door operation state of the first door operation signal and the second door operation signal, the second hall door lock corresponding to the second car door opened, and the second hall door lock corresponding to the second hall door opened are continuously conducted within a second preset time after the first door operation signal and the second door operation signal are received, and otherwise determines that the corresponding first car door lock, the first hall door lock, the second car door lock, and the second hall door lock are in short circuit fault And the door lock of the second hall has no short circuit fault.

In addition, in another embodiment of the invention, on the basis that two doors are opened simultaneously, short-circuit fault judgment can be carried out in the time-sharing door closing process. Specifically, the door operation signals sent by the elevator main controller 13 to the second electric safety controller 12 include a third door operation signal and a fourth door operation signal, wherein the door operation state in the third door operation signal includes the first hall door or the first car door being closed, and the door operation state in the fourth door operation signal includes the second hall door or the second car door being closed. The method of the embodiment comprises the following steps:

step S701: and reading a third door operation signal sent by the elevator main controller, and acquiring the closed first hall door or first car door in the door operation state.

Step S702: and judging whether a first hall door lock corresponding to the first hall door or a first car door lock corresponding to the first car door is closed, and executing the step S705 when the first hall door lock or the first car door lock is closed, or else continuously judging whether the first hall door lock and the first car door lock are closed (if the first hall door lock and the first car door lock are not closed after the specified closing time is reached, directly confirming that the first hall door lock and the first car door lock are in short circuit fault).

Step S703: and reading a fourth door operation signal sent by the elevator main controller, and acquiring a closed second hall door or a closed second car door in the door operation state.

Step S704: and judging whether a second hall door lock corresponding to the second hall door or a second car door lock corresponding to the second car door is closed, and executing the step S705 when the second hall door lock or the second car door lock is closed, or else continuously judging whether the second hall door lock and the second car door lock are closed (if the second hall door lock and the second car door lock are not closed after the specified closing time is reached, directly confirming that the second hall door lock and the second car door lock are in short circuit fault).

Step S705: and judging whether the difference between the closing time of the first car door or the first hall door lock and the conduction (closing) time of the second car door lock or the second hall door lock is greater than a sixth preset time, if so, executing a step S706, and otherwise, executing a step S707.

Step S706: and confirming that the first car door lock, the first hall door lock, the second car door lock and the second hall door latch are in short circuit fault.

Step S707: and confirming that the first car door lock, the first hall door lock, the second car door lock and the second hall door lock have no short circuit fault.

When, as shown, the method shown in fig. 7 is also applicable to the case where two doors are closed simultaneously, only the difference between the two door locks is smaller than the sixth preset time.

The door lock short-circuit fault diagnosis method in this embodiment and the door lock short-circuit fault diagnosis system in the corresponding embodiment in fig. 2 to 3 belong to the same concept, and specific implementation processes thereof are detailed in the corresponding system embodiments, and technical features in the system embodiments are correspondingly applicable in the method embodiments, and are not described herein again.

The embodiment of the invention also provides a door lock short-circuit fault diagnosis device which can be a second electronic safety controller (such as a machine room safety board) independent of the elevator main controller, and the second electronic safety controller is connected with one or more first electronic safety controllers. As shown in fig. 8, the device 8 of the present embodiment includes a memory 81 and a processor 82, and a computer program that can be executed on the processor 82 is stored in the memory 81, and when the processor 82 executes the computer program, the steps of the door lock short fault diagnosis method are implemented.

The door lock short-circuit fault diagnosis device in this embodiment and the door lock short-circuit fault diagnosis system in the embodiment corresponding to fig. 2 to 3 belong to the same concept, and specific implementation processes thereof are detailed in the corresponding system embodiments, and technical features in the system embodiments are correspondingly applicable in this device embodiment, which is not described herein again.

The embodiment of the invention also provides a computer readable storage medium, wherein a computer program is stored on the storage medium, and when the computer program is executed by a processor, the steps of the door lock short-circuit fault diagnosis method are realized. The computer-readable storage medium in this embodiment and the door lock short-circuit fault diagnosis system in the embodiment corresponding to fig. 2 to 3 belong to the same concept, and specific implementation processes thereof are detailed in the corresponding system embodiments, and technical features in the system embodiments are correspondingly applicable in this device embodiment, which is not described herein again.

It should be understood that, the sequence numbers of the steps in the foregoing embodiments do not imply an execution sequence, and the execution sequence of each process should be determined by its function and inherent logic, and should not constitute any limitation to the implementation process of the embodiments of the present application.

It is obvious to those skilled in the art that, for convenience and simplicity of description, the foregoing functional units and modules are merely illustrated in terms of division, and in practical applications, the foregoing functions may be distributed as needed by different functional units and modules. Each functional unit and module in the embodiments may be integrated in one processor, or each unit may exist alone physically, or two or more units are integrated in one unit, and the integrated unit may be implemented in a form of hardware, or in a form of software functional unit. In addition, specific names of the functional units and modules are only for convenience of distinguishing from each other, and are not used for limiting the protection scope of the present application. The specific working processes of the units and modules in the system may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.

In the above embodiments, the descriptions of the respective embodiments have respective emphasis, and reference may be made to the related descriptions of other embodiments for parts that are not described or illustrated in a certain embodiment.

Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.

In the embodiments provided in the present application, it should be understood that the disclosed door lock short fault diagnosis system, method and apparatus may be implemented in other ways. For example, the door lock short fault diagnostic method embodiments described above are merely illustrative.

In addition, functional units in the embodiments of the present application may be integrated into one processor, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.

The integrated modules/units, if implemented in the form of software functional units and sold or used as separate products, may be stored in a computer readable storage medium. Based on such understanding, all or part of the flow in the method of the embodiments described above can be realized by a computer program, which can be stored in a computer-readable storage medium and can realize the steps of the embodiments of the methods described above when the computer program is executed by a processor. Wherein the computer program comprises computer program code, which may be in the form of source code, object code, an executable file or some intermediate form, etc. The computer-readable medium may include: any physical or interface switching device, recording medium, usb disk, removable hard disk, magnetic disk, optical disk, computer Memory, Read-Only Memory (ROM), Random Access Memory (RAM), electrical carrier wave signal, telecommunication signal, software distribution medium, etc., capable of carrying said computer program code. It should be noted that the computer readable medium may contain other components which may be suitably increased or decreased as required by legislation and patent practice in jurisdictions, for example, in some jurisdictions, computer readable media which may not include electrical carrier signals and telecommunications signals in accordance with legislation and patent practice.

The above-mentioned embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the spirit and scope of the embodiments of the present application and are intended to be included within the scope of the present application.

Claims

1. A door lock short circuit fault diagnosis system is characterized by comprising a first electronic safety controller, a second electronic safety controller and an elevator main controller, wherein the first electronic safety controller is connected with the second electronic safety controller through a first communication link, and the second electronic safety controller is connected with the elevator main controller through a second communication link;

2. The door lock short-circuit fault diagnosis system according to claim 1, wherein the door operation state of the second electronic safety controller in the door operation signal includes that any hall door or car door is opened, and when the car door lock corresponding to the opened car door or the hall door lock corresponding to the opened hall door is continuously turned on within a first preset time, it is confirmed that the car door lock or the hall door lock is in a short-circuit fault.

3. The door lock short fault diagnosis system according to claim 1, wherein the door operation signal comprises a first door operation signal and a second door operation signal, the door operation state in the first door operation signal comprises a first hall door or a first car door being opened, and the door operation state in the second door operation signal comprises a second hall door or a second car door being opened;

4. The door lock short fault diagnostic system according to claim 1, wherein the door operation signals include a third door operation signal and a fourth door operation signal, the door operation state in the third door operation signal includes a first hall door or a first car door being closed, and the door operation state in the fourth door operation signal includes a second hall door or a second car door being closed;

5. The door lock short-circuit fault diagnosis system according to claim 1, wherein the second electronic safety controller comprises a first electronic safety board, the second electronic safety controller comprises a second electronic safety board and K third electronic safety boards, and K is an integer greater than or equal to 0;

6. The door lock short-circuit fault diagnosis system according to any one of claims 1 to 5, wherein the door lock short-circuit fault diagnosis system comprises a switch assembly and an elevator brake control device, the switch assembly is connected in series in a power supply loop of the elevator brake control device, and the second electronic safety controller controls the switch assembly to be disconnected when the state of any hall door lock or car door lock is abnormal.

7. A short-circuit fault diagnosis method for a door lock is characterized by comprising the following steps:

8. The door lock short-circuit fault diagnosis method according to claim 7, wherein the step of judging whether the hall door lock and the car door lock have the short-circuit fault according to the first state signal, the second state signal and the door operation state comprises the steps of:

9. The door lock short-circuit fault diagnosis method according to claim 7, wherein the door operation signal comprises a first door operation signal and a second door operation signal, the door operation state in the first door operation signal comprises that a first hall door or a first car door is opened, and the door operation state in the second door operation signal comprises that a second hall door or a second car door is opened;

10. The door lock short-circuit fault diagnosis method according to claim 7, wherein the door operation signals include a third door operation signal and a fourth door operation signal, the door operation state in the third door operation signal includes a first hall door or a first car door being closed, and the door operation state in the fourth door operation signal includes a second hall door or a second car door being closed;

11. The door lock short circuit fault diagnosis equipment is characterized by comprising a first electronic safety controller, a second electronic safety controller and an elevator main controller, wherein the first electronic safety controller comprises a first memory and a first processor, and a computer program which can run on the first processor is stored in the first memory; the second electronic safety controller comprises a second memory and a second processor, and the second memory stores a computer program which can run on the second processor; the first processor, the second processor and the third processor, when executing the computer program, implement the steps of the door lock short fault diagnosis method according to any one of claims 7 to 10.

12. A computer-readable storage medium, characterized in that the computer-readable storage medium has stored thereon a computer program, which when executed by a processor, implements the steps of the door lock short fault diagnosis method according to any one of claims 7 to 10.