CN113460824A - Elevator safety loop fault detection system, method, equipment and storage medium - Google Patents
Elevator safety loop fault detection system, method, equipment and storage medium Download PDFInfo
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- CN113460824A CN113460824A CN202010248164.1A CN202010248164A CN113460824A CN 113460824 A CN113460824 A CN 113460824A CN 202010248164 A CN202010248164 A CN 202010248164A CN 113460824 A CN113460824 A CN 113460824A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
- B66B5/0006—Monitoring devices or performance analysers
- B66B5/0018—Devices monitoring the operating condition of the elevator system
- B66B5/0031—Devices monitoring the operating condition of the elevator system for safety reasons
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Abstract
The invention provides a system, a method, equipment and a storage medium for detecting faults of an elevator safety loop, wherein the system comprises N first electronic safety controllers and a second electronic safety controller, wherein N is an integer greater than or equal to 1; each first electronic safety controller is communicated with the second electronic safety controller through a safety bus respectively; each first electronic safety controller is connected with a plurality of first safety switches, acquires state signals of the first safety switches and sends the state signals to the second electronic safety controller; the second electronic safety controller is connected with the second safety switches, acquires the state signals of the second safety switches, and controls the elevator brake control device to be switched on or switched off according to the state signals of the first safety switches and the state signals of the second safety switches. The embodiment of the invention can realize the function of the safety loop without complex wiring, thereby simplifying the diagnosis of the safety loop.
Description
Technical Field
The embodiment of the invention relates to the field of elevator control, in particular to a system, a method, equipment and a storage medium for detecting elevator safety loop faults.
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.
In order to ensure that the elevator can run safely, a plurality of electrical safety devices are arranged on the elevator, and the elevator can run only when each electrical safety device is normal. As shown in fig. 1, there is one safety switch corresponding to each electrical safety device (when the electrical safety device is normal, the corresponding safety switch is closed, otherwise, the safety switch is open), and all the safety switches K1, K2, …, Kn are connected in series to form a safety loop, in which a running contactor coil S1 and a band-type brake contactor coil S2 are further provided. When all the safety switches are closed, the safety loop is conducted, the operation contactor coil S1 and the band-type brake contactor coil S2 are electrified, and the elevator operates normally; and any safety switch is disconnected, the safety circuit is disconnected, the running contactor coil S1 and the band-type brake contactor coil S2 lose power, and the elevator stops running.
In a conventional elevator control system, safety switches K1, K2, …, Kn, which are safety components of an elevator, are distributed at positions such as a machine room, a car, a hoistway, a pit, and the like, and the safety switches K1, K2, …, Kn are connected in series through traveling cables. The safety loop needs to be bridged back and forth, which increases the cost of the cable, and in order to reduce the voltage loss on the safety loop, a higher voltage circuit needs to be used, which is correspondingly higher in cost.
Moreover, most of the safety circuits do not carry out sectional fault diagnosis on the safety circuits, and when the safety circuits are broken, maintenance personnel are required to confirm the states of the safety circuits one by one, so that the operation difficulty is high, and the time is wasted. The existing safety loop diagnosis scheme can carry out relatively rough sectional fault diagnosis only by matching with complex peripheral signals or special loop design, and has complex system design and electrical wiring and higher cost.
Disclosure of Invention
The embodiment of the invention provides a system, a method, equipment and a storage medium for detecting the fault of an elevator safety loop, aiming at the problems that the elevator safety loop lacks sectional fault diagnosis, or the fault diagnosis is complex and the cost is high.
The technical scheme for solving the technical problems is that the invention provides an elevator safety loop fault detection system, which comprises N first electronic safety controllers and a second electronic safety controller, wherein N is an integer greater than or equal to 1; the second electronic safety controllers are arranged in a machine room, and each first electronic safety controller is communicated with the second electronic safety controller through a safety bus;
each first electronic safety controller is connected with a plurality of first safety switches, acquires state signals of the first safety switches and sends the state signals to the second electronic safety controller through the safety bus;
the second electronic safety controller is connected with the second safety switches, acquires the state signals of the second safety switches, and controls the elevator brake control device to be switched on or switched off according to the state signals of the first safety switches and the state signals of the second safety switches.
Preferably, each of the first electronic safety controllers includes a first logic processing unit, a first communication unit and at least one first terminal, the second electronic safety controller includes a second logic processing unit and a second communication unit, and the first communication unit of each of the first electronic safety controllers communicates with the second communication unit of the second electronic safety controller via a safety bus respectively;
in each first electronic safety controller, each first terminal is connected with one first safety switch, the first logic processing unit is respectively connected with the first communication unit and each first terminal, and sends a state signal to the second communication unit of the second electronic safety controller through the first communication unit, wherein the state signal comprises the state of each first safety switch connected with the first terminal;
the second logic processing unit obtains the state of each first safety switch by analyzing the state signal received by the second communication unit and outputs an identifier corresponding to the first safety switch with abnormal state;
the second electronic safety controller comprises at least one second terminal, and each second terminal is connected with a second safety switch;
and the second logic processing unit is respectively connected with each second terminal and outputs the identifier corresponding to the second safety switch with abnormal state.
Preferably, the second electric safety controller comprises a switch assembly, and the switch assembly is connected in series in a power supply loop of the elevator brake control device;
and the second logic processing unit controls the switch component to be switched off when the state of any first safety switch or second safety switch is abnormal.
Preferably, the fault detection system further comprises an elevator main controller, the second electronic safety controller comprises a third communication unit, and the second logic processing unit outputs an identifier corresponding to the first safety switch with the abnormal state and an identifier corresponding to the second safety switch with the abnormal state to the elevator main controller through the third communication unit;
or, the fault detection system further comprises a display device, and the second electronic safety controller is connected with the display device and outputs the identifier corresponding to the first safety switch with the abnormal state and the identifier corresponding to the second safety switch with the abnormal state to the display device for display.
Preferably, the N first electric safety controllers comprise one or more of: the elevator car comprises a car top electronic safety board arranged on the car top, a well electronic safety board arranged on a well, and a pit electronic safety board arranged on a pit;
the second electronic safety controller is a machine room electronic safety board installed in a machine room.
Preferably, each of the first safety switches is connected in series between a first power supply and one of the first terminals; each of the second safety switches is connected in series between a second power supply and one of the second terminals.
The embodiment of the invention also provides a method for detecting the fault of the elevator safety loop, which comprises the following steps:
each first electronic safety controller respectively acquires state signals of a plurality of connected first safety switches and sends the state signals to the second electronic safety controller through a safety bus;
the second electronic safety controller acquires state signals of a plurality of second safety switches connected with each other, and controls the elevator brake control device to be switched on or switched off according to the state signals of the first safety switches and the state signals of the second safety switches.
Preferably, the method further comprises: the first electronic safety controller is respectively connected with the first safety switches through a plurality of first terminals, and the second electronic safety controller is respectively connected with the second safety switches through a plurality of second terminals; the method further comprises the following steps:
the first electronic safety controller respectively acquires the states of a plurality of first safety switches through a plurality of first terminals;
the second electronic safety controller respectively acquires the states of a plurality of second safety switches through a plurality of second terminals;
and the second electronic safety controller outputs an identifier corresponding to the first safety switch with the abnormal state and an identifier corresponding to the second safety switch with the abnormal state.
The embodiment of the invention also provides elevator safety loop fault detection equipment, which comprises a first electronic safety controller and a second electronic safety controller, wherein the first electronic safety controller comprises a first memory and a first processor, and the first memory is stored with a computer program which can run on the first processor; the second electric safety controller comprises a second memory and a second processor, and a computer program which can run on the second processor is stored in the second memory, and the first processor and the second processor realize the steps of the elevator safety loop fault detection method when executing the computer program.
An embodiment of the present invention further provides a computer-readable storage medium, where 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 elevator safety loop fault detection method described above are implemented.
According to the elevator safety loop fault detection system, the elevator safety loop fault detection method, the elevator safety loop fault detection equipment and the elevator safety loop fault detection storage medium, states of the safety switches are respectively obtained through the first electronic safety controller and the second electronic safety controller, the second electronic safety controller outputs the safety switches with abnormal states, the safety loop function can be achieved without complex wiring, and an elevator is stopped. The embodiment of the invention can also quickly acquire the position of the failed safety switch, simplifies the diagnosis of the safety circuit, avoids the bridging of the elevator safety circuit among all the safety switches, and saves the cable cost and the circuit cost.
Drawings
Fig. 1 is a schematic view of a prior art elevator safety circuit;
fig. 2 is a schematic diagram of an elevator safety loop fault detection system provided by an embodiment of the present invention;
fig. 3 is a schematic diagram of an elevator safety loop fault detection system provided by another embodiment of the present invention;
fig. 4 is a schematic flow chart of a fault detection method for an elevator safety loop provided by an embodiment of the invention;
fig. 5 is a schematic diagram of an elevator safety circuit fault detection device provided by an embodiment of the present 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.
Fig. 2 is a schematic diagram of an elevator safety loop fault detection system provided by an embodiment of the present invention, which can realize fault location of an elevator safety loop, that is, quickly determine the position of a failed electrical safety device when the elevator safety loop has a fault. The elevator safety loop fault detection system of the embodiment comprises N first electronic safety controllers 11 and a second electronic safety controller 12, wherein N is an integer greater than or equal to 1; 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 N first electronic Safety controllers 11 and the second electronic Safety controllers 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 through a Safety bus. Specifically, the first electric safety controller 11 and the second electric safety controller 12 may be printed circuit boards, respectively, into which respective electronic components are integrated.
Each first electronic safety controller 11 is connected to a plurality of first safety switches near the installation position thereof, and acquires status signals of the plurality of first safety switches, and the first electronic safety controller 11 further transmits the acquired status signals of the plurality of first safety switches to the second electronic safety controller 12 through the safety bus.
The second electronic safety controller 12 is disposed in the machine room, the second electronic safety controller 12 is connected to the plurality of second safety switches, and obtains status signals of the plurality of second safety switches, and the second electronic safety controller 12 further controls the elevator braking control device to be turned on or off according to the status signals of the first safety switch and the status signals of the second safety switch. Specifically, the second electronic safety controller 12 controls the elevator brake control device to be turned off when the state signal of any one of the first safety switches or the state signal of the second safety switch is abnormal, so that the elevator is stopped emergently.
According to the elevator safety loop fault detection system, the state of the first safety switch is acquired through the first electronic safety controller 11, the state of the second safety switch is acquired through the second electronic safety controller 12, and the second electronic safety controller controls the elevator brake control device to be switched on or switched off according to the state signal of the first safety switch and the state signal of the second safety switch, so that the elevator safety loop control is realized.
In an embodiment of the present invention, the first electronic safety controller 11 includes a first logic processing unit, a first communication unit and at least one first terminal, and each first terminal is used for connecting to a first safety switch. The second electric safety controller 12 includes a second logic processing unit and a second communication unit, and the first communication unit of each first electric safety controller 11 communicates with the second communication unit of the second electric safety controller 12 via a serial communication bus, respectively. That is, the first electric safety controller 11 and the second electric safety controller 12 are nodes on the safety bus, respectively, and can transmit and receive signals to and from the safety bus, respectively.
Specifically, the first logic processing Unit and the second logic processing Unit may respectively adopt a Micro Control Unit (MCU), a Programmable Logic Controller (PLC), and the like. In each first electronic safety controller 11, each first safety switch is connected in series between the first power supply and the first terminal, and each first terminal is connected to the first logic processing unit, so that the first logic processing unit can obtain the state of each first safety switch in real time through the first terminal, that is, when the first logic processing unit detects that the first terminal is at a high level, it can be determined that the first safety switch connected to the first terminal is closed, that is, the first safety switch is normal; when the first logic processing unit detects that the first terminal is at a low level, it can be confirmed that the first safety switch connected with the first terminal is disconnected, that is, the first safety switch is abnormal. And, the first logic processing unit may send a status signal including the status of each first safety switch to the second electric safety controller 12 according to a preset period.
The first logic processing unit of the first electric safety controller 11 is further connected to the first communication unit and sends a status signal including the status of the first safety switch connected to each first terminal to the second communication unit of the second electric safety controller 12 through the first communication unit. In particular, the status signal may include an identification (e.g., the number of the first electric safety controller where the first terminal is located, the number of the connected first terminal, etc.) and the level (high level or low level) of the first terminal. The second logic processing unit of the second electrical safety controller 12 obtains the state of each first safety switch of each first electrical safety controller by analyzing the state signal received by the second communication unit, and outputs an identifier corresponding to the first safety switch with abnormal state (for example, open). Through the above identification, the worker can quickly find the first safety switch with the fault.
The second electric safety controller 12 includes at least one second terminal besides the second logic processing unit and the second communication unit, and each second terminal is connected to a second safety switch. Similarly, each second safety switch is connected in series between the second power supply and the second terminal, and each second terminal is connected with the second logic processing unit, so that the second logic processing unit can acquire the state of each second safety switch in real time through the second terminal, that is, when the second logic processing unit detects that the second terminal is at a high level, the second safety switch connected with the second terminal is confirmed to be closed; and when the second logic processing unit detects that the second terminal is in a low level, the second safety switch connected with the second terminal is confirmed to be disconnected. And, the second logic processing unit, after obtaining the state of the second safety switch connected to the second terminal, outputs an identification corresponding to the second safety switch (for example, open) with abnormal state, which may include the number of the second electric safety controller 12, the number of the connected second terminal, and the like.
As shown in fig. 3, the safety loop fault detection system of this embodiment may further include a switch assembly 13 and an elevator brake control device 14, where the switch assembly 13 is connected in series between the power supply and the elevator brake control device 14, and the elevator brake control device 14 may include a running contactor coil, a brake contactor coil, and the like, and the elevator brake control device implements brake releasing and locking control of the elevator brake device through the running contactor coil and the brake contactor coil. When the state of the first safety switch connected with any one of the first terminals or the second safety switch connected with the second terminal is abnormal, the second logic processing unit of the second electronic safety controller 12 controls the switch assembly 13 to be switched off, so that the elevator brake control device 14 is powered off, the elevator brake device is braked, and the elevator stops running.
The switch assembly 13 may be a safety relay or a semiconductor switching element. Also, the switch assembly 13 may be integrated into the second electric safety controller 12.
The second logic processing unit of the second electrical safety controller 12 can output the identifier corresponding to the first safety switch and the identifier corresponding to the second safety switch in abnormal states to the elevator main controller. Specifically, as shown in fig. 3, in a further embodiment of the present invention, the safety loop fault detection system may further include an elevator main controller 15, the second electric safety controller 12 includes a third communication unit, and the second logic processing unit outputs an identifier corresponding to the first safety switch in the abnormal state and an identifier corresponding to the second safety switch in the abnormal state to the elevator main controller 15 through the third communication unit. So that the safety switch in the safety circuit that has failed can be accessed by the personnel concerned via the elevator main control 15.
In addition, the second logic processing unit of the second electronic safety controller 12 can also output the identifier corresponding to the first safety switch with abnormal state and the identifier corresponding to the second safety switch with abnormal state to an independent display device. That is, the safety circuit fault detection system further includes a display device, the second electronic safety controller 12 is connected to the display device, and outputs the identifier corresponding to the first safety switch with abnormal state and the identifier corresponding to the second safety switch with abnormal state to the display device 16 for displaying, so that the relevant personnel can obtain the safety switch with fault in the safety circuit through the display device 16.
In the above safety loop fault detection system, the N first electric safety controllers 11 may include one or more of: the safety device comprises a car top electronic safety board (independent of a car top board) arranged on the car top, a well electronic safety board arranged on a well and a pit electronic safety board arranged on a pit. And the first terminal of the car top electronic safety board is connected to one or more of the following first safety switches: a car top maintenance switch, a safety gear electrical switch, a maintenance operation switch, a maintenance uplink switch, a maintenance downlink switch, a car door lock switch and the like; the first terminal of the hoistway electronic safety board is connected to one or more of the following first safety switches: a first buffer switch, a second buffer switch, a clamping rope electrical switch, a speed limiter electrical switch, an upper limit switch, a lower limit switch, a landing door lock switch and the like; the first terminal of the pit electronic safety board is connected to one or more of the following first safety switches: a pit switch box emergency stop switch, a speed limiter tensioning wheel rope breaking switch, a pit maintenance box switch and the like.
The second electric safety controller may be a machine room electric safety board (independent of the elevator main control board) mounted in the machine room, the second terminal of the machine room electric safety board being connected to one or more of the following second safety switches: a control cabinet emergency stop button, a host emergency stop switch, a jigger handwheel electrical switch, an operation relay safety switch, a band-type brake relay safety switch and the like.
As shown in fig. 4, an embodiment of the present invention further provides an elevator safety loop fault detection method, which may be performed by a second electronic safety controller (e.g., a machine room electronic safety board), and the second electronic safety controller is communicatively connected to one or more first electronic safety controllers through a safety 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: each first electronic safety controller respectively acquires state signals of a plurality of first safety switches connected with the first electronic safety controller and sends the state signals to the second electronic safety controller through a safety bus.
Specifically, each first electrical safety controller is connected to a plurality of first safety switches, and the first electrical safety controller may send status signals of the plurality of first safety switches to the second electrical safety controller in a status signal manner, where the status signals include a status of each first safety switch of the first electrical safety controller.
In particular, each first electric safety controller can send a state signal to the second electric safety controller according to a preset period, so that the second electric safety controller can obtain the state of each first safety controller in real time, and the real-time performance is improved.
In an embodiment of the present invention, each first electric safety controller includes a plurality of first terminals, and each first terminal is respectively used for connecting to a first safety switch. In each first electronic safety controller, each first safety switch is connected in series between the first power supply and the first terminal, so that the first electronic safety controller can acquire the state of each first safety switch in real time through the first terminal, namely when the first electronic safety controller detects that the first terminal is at a high level, the first safety switch connected with the first terminal is confirmed to be closed; when the first electronic safety controller detects that the first terminal is at a low level, the first safety switch connected with the first terminal is confirmed to be disconnected.
The status signal may include an identification corresponding to the safety switch, such as the number of the first electric safety controller to which the safety switch is connected, the number of the terminal of the connected first electric safety controller, and the like.
Step S42: the second electronic safety controller acquires state signals of a plurality of second safety switches connected with the second electronic safety controller and controls the elevator brake control device to be switched on or switched off according to the state signals of the first safety switches and the state signals of the second safety switches.
Specifically, the second electronic safety controller is connected to the plurality of second safety switches, and the second electronic safety controller can obtain the state of each first safety switch by analyzing the state signal sent by the first electronic safety controller.
In another embodiment of the present invention, the second electric safety controller includes a plurality of second terminals, and each of the second terminals is respectively used for connecting one second safety switch and outputting an identifier corresponding to the abnormal-state first safety switch (e.g. open). In the second electronic safety controller, each second safety switch is connected in series between the second power supply and the second terminal, so that the second electronic safety controller can acquire the state of each second safety switch in real time through the second terminal, namely when the second electronic safety controller detects that the second terminal is at a high level, the second safety switch connected with the second terminal is confirmed to be closed; and when the second electronic safety controller detects that the second terminal is in a low level, the second safety switch connected with the second terminal is confirmed to be disconnected. And the second electronic safety controller also outputs the identification corresponding to the first safety switch with the abnormal state and the identification corresponding to the second safety switch with the abnormal state, thereby facilitating the positioning of the failure safety switch.
The elevator safety loop fault detection method in this embodiment and the elevator safety loop fault detection system in the corresponding embodiment in fig. 2-3 belong to the same concept, and the specific implementation process is detailed in the corresponding system embodiment, and the technical features in the system embodiment are correspondingly applicable in this method embodiment, which is not described herein again.
The embodiment of the invention also provides elevator safety loop fault detection equipment which comprises at least one first electronic safety controller 5 and one second electronic safety controller 6, wherein each first electronic safety controller 5 is connected with the second electronic safety controller 6 through a safety bus. As shown in fig. 5, the first electric safety controller 5 of the present embodiment includes a first memory 51 and a first processor 52, and a computer program operable on the first processor 52 is stored in the first memory 51, and the second electric safety controller 6 includes a second memory 61 and a second processor 62, and a computer program operable on the second processor 62 is stored in the second memory 61, and when the computer program is executed by the first processor 52 and the second memory 62, the steps of the elevator safety loop fault detection method described above are implemented.
The elevator safety loop fault detection device in this embodiment and the elevator safety loop fault detection system in the embodiment corresponding to fig. 2-3 belong to the same concept, and the specific implementation process is detailed in the corresponding system embodiment, and the technical features in the system embodiment are applicable in this device embodiment, and are not described herein again.
An embodiment of the present invention further provides a computer-readable storage medium, where a computer program is stored on the storage medium, and when the computer program is executed by a processor, the steps of the elevator safety loop fault detection method described above are implemented. The computer-readable storage medium in this embodiment is the same as the elevator safety loop fault detection system in the embodiment corresponding to fig. 2 to 3, and the specific implementation process is described in detail in the corresponding system embodiment, and the technical features in the system embodiment are 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 elevator safety loop fault detection system, method and apparatus may be implemented in other ways. For example, the elevator safety loop fault detection 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 (10)
1. The elevator safety loop fault detection system is characterized by comprising N first electronic safety controllers and a second electronic safety controller, wherein N is an integer greater than or equal to 1; the second electronic safety controllers are arranged in a machine room, and each first electronic safety controller is communicated with the second electronic safety controller through a safety bus;
each first electronic safety controller is connected with a plurality of first safety switches, acquires state signals of the first safety switches and sends the state signals to the second electronic safety controller through the safety bus;
the second electronic safety controller is connected with the second safety switches, acquires the state signals of the second safety switches, and controls the elevator brake control device to be switched on or switched off according to the state signals of the first safety switches and the state signals of the second safety switches.
2. The elevator safety loop fault detection system of claim 1, wherein each of the first electrical safety controllers includes a first logical processing unit, a first communication unit, and at least one first terminal, the second electrical safety controller includes a second logical processing unit and a second communication unit, and the first communication unit of each of the first electrical safety controllers communicates with the second communication unit of the second electrical safety controller via a safety bus, respectively;
in each first electronic safety controller, each first terminal is connected with one first safety switch, the first logic processing unit is respectively connected with the first communication unit and each first terminal, and sends a state signal to the second communication unit of the second electronic safety controller through the first communication unit, wherein the state signal comprises the state of each first safety switch connected with the first terminal;
the second logic processing unit obtains the state of each first safety switch by analyzing the state signal received by the second communication unit and outputs an identifier corresponding to the first safety switch with abnormal state;
the second electronic safety controller comprises at least one second terminal, and each second terminal is connected with a second safety switch;
and the second logic processing unit is respectively connected with each second terminal and outputs the identifier corresponding to the second safety switch with abnormal state.
3. The elevator safety loop fault detection system of claim 2, wherein the second electrical safety controller includes a switch assembly and the switch assembly is connected in series in a power supply loop of an elevator brake control device;
and the second logic processing unit controls the switch component to be switched off when the state of any first safety switch or second safety switch is abnormal.
4. The elevator safety loop fault detection system of claim 2, wherein the fault detection system further comprises an elevator main controller, the second electronic safety controller comprises a third communication unit, and the second logic processing unit outputs an identifier corresponding to the first safety switch with abnormal state and an identifier corresponding to the second safety switch with abnormal state to the elevator main controller through the third communication unit;
or, the fault detection system further comprises a display device, and the second electronic safety controller is connected with the display device and outputs the identifier corresponding to the first safety switch with the abnormal state and the identifier corresponding to the second safety switch with the abnormal state to the display device for display.
5. The elevator safety loop fault detection system of claim 2, wherein the N first electronic safety controllers include one or more of: the elevator car comprises a car top electronic safety board arranged on the car top, a well electronic safety board arranged on a well, and a pit electronic safety board arranged on a pit; the second electronic safety controller is a machine room electronic safety board installed in a machine room.
6. The elevator safety loop fault detection system of claim 2, wherein each of the first safety switches is connected in series between a first power supply and one of the first terminals; each of the second safety switches is connected in series between a second power supply and one of the second terminals.
7. An elevator safety circuit fault detection method, characterized by comprising:
each first electronic safety controller respectively acquires state signals of a plurality of connected first safety switches and sends the state signals to the second electronic safety controller through a safety bus;
the second electronic safety controller acquires state signals of a plurality of second safety switches connected with each other, and controls the elevator brake control device to be switched on or switched off according to the state signals of the first safety switches and the state signals of the second safety switches.
8. The elevator safety loop fault detection method according to claim 7, wherein the first electric safety controller is connected to a plurality of first safety switches through a plurality of first terminals, respectively, and the second electric safety controller is connected to a plurality of second safety switches through a plurality of second terminals, respectively; the method further comprises the following steps:
the first electronic safety controller respectively acquires the states of a plurality of first safety switches through a plurality of first terminals;
the second electronic safety controller respectively acquires the states of a plurality of second safety switches through a plurality of second terminals;
and the second electronic safety controller outputs an identifier corresponding to the first safety switch with the abnormal state and an identifier corresponding to the second safety switch with the abnormal state.
9. An elevator safety loop fault detection apparatus, comprising a first electronic safety controller and a second electronic safety controller, the first electronic safety controller comprising a first memory and a first processor, and the first memory having stored therein a computer program operable on the first processor; the second electric safety controller comprises a second memory and a second processor, and a computer program executable on the second processor is stored in the second memory, and the first processor and the second processor, when executing the computer program, implement the steps of the elevator safety loop fault detection method according to any one of claims 7 to 8.
10. A computer-readable storage medium, characterized in that a computer program is stored on the computer-readable storage medium, which computer program, when being executed by a processor, carries out the steps of the elevator safety circuit fault detection method according to any one of claims 7 to 8.
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