Fault-tolerant layer electrical system, fault-tolerant layer implementation method using the system, and elevator including the system

Abstract

The present application relates to a foolproof layer electrical system, a foolproof layer implementation method using the system and an elevator comprising the system. The foolproof layer electrical system comprises a striker, a plurality of travel switches and an electrical interlock device, the striker is arranged on a portal frame of a car and can move together with the car; the plurality of travel switches are respectively fixed on car guide rails in a hoistway, and are arranged to respectively correspond to the arrangement position of the striker when the car stops at the leveling position of a corresponding floor, the corresponding travel switch is triggered when the striker contacts the corresponding travel switch, each travel switch has a first group of contacts and a second group of contacts; the electrical interlock device can be electrically connected with the first group of contacts of the corresponding travel switch, and the electrical interlock device is powered when electrically connected with the first group of contacts of the corresponding travel switch. The foolproof layer electrical system serves as an independent peripheral electrical judgment system to cooperate with the CPU for redundancy, so as to prevent the elevator door lock from malfunctioning when the CPU fails or is disordered.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of elevator control technology, in particular to an anti-mislanding electrical system, an anti-mislanding implementation method using the system and an elevator comprising the system. BACKGROUND

[0002] An elevator is a vertical lift powered by an electric motor, equipped with a box-shaped cabin, used for multi-storey buildings to carry people or carry goods. With the continuous completion of high-rise buildings, elevators are widely used as vertical transportation tools in buildings. The landing of the elevator requires accuracy, and the elevator should stop at the flat position, that is, the ground of the car and the ground of the landing floor are flat. A slight deviation will cause the elevator to land between two floors. When the elevator has a mislanding problem, there is a situation where the car has not actually arrived, but the elevator door is opened, and the person taking the elevator does not notice that the car has not actually arrived, and continues to walk, causing a vicious accident of falling, being hit or squeezed by the elevator.

[0003] Therefore, the anti-mislanding function of the elevator is a function to enhance the safety of the elevator, and the absolute position encoding record is realized by the central processing unit (CPU) of the elevator control system in combination with the peripheral sensor. However, the CPU may also malfunction or be confused, causing the elevator door lock to malfunction, so the above-mentioned vicious accidents cannot be completely avoided.

[0004] The above statements on the background art are only for the convenience of deep understanding of the technical solutions of the present application (the technical means used, the technical problems solved and the technical effects generated, etc.), and should not be regarded as acknowledging or in any form implying that the message constitutes the prior art known to those skilled in the art. SUMMARY

[0005] The purpose of the present application is to provide an anti-mislanding electrical system, an anti-mislanding implementation method using the system and an elevator comprising the system, which provides a set of independent peripheral electrical judgment system and method to cooperate with the CPU of the elevator control system for redundant judgment, to prevent the elevator control system CPU from malfunctioning or being confused, causing the elevator door lock to malfunction.

[0006] According to an embodiment of the present application, there is provided an error-proof floor electrical system, comprising: a striker arranged on a portal frame of a car and capable of moving together with the car; a plurality of travel switches respectively fixed on car guide rails in a hoistway, and arranged to respectively correspond to positions of the striker when the car is parked at a level position of a corresponding floor, each of the travel switches having a first set of contacts and a second set of contacts, and being triggered when the striker contacts the travel switch; an electrical interlock device electrically connected with the first set of contacts of the corresponding travel switch, and powered when electrically connected with the first set of contacts of the corresponding travel switch; wherein the second set of contacts of each of the travel switches and an elevator control system are connected in series to form a feedback circuit for detecting the action of the first set of contacts of the corresponding travel switch.

[0007] Further, the first set of contacts are normally open contacts, and the second set of contacts are normally closed contacts; when the travel switch is triggered, the first set of contacts are closed, and the second set of contacts are opened.

[0008] Further, the striker comprises a vertical portion and pre-contact portions arranged at upper and lower ends of the vertical portion; the pre-contact portion arranged at the upper end of the vertical portion is inclined upward from the connection with the vertical portion; the pre-contact portion arranged at the lower end of the vertical portion is inclined downward from the connection with the vertical portion.

[0009] Further, an end of each of the travel switches is provided with a pivotable trigger roller; the trigger roller of each of the travel switches is arranged to be capable of contacting the pre-contact portions and the vertical portion of the striker; wherein, in the case that the striker moves together with the car to the level position of the corresponding floor, when the trigger roller of the travel switch of the corresponding floor contacts the middle position of the vertical portion of the striker, the corresponding travel switch is triggered.

[0010] Further, the vertical portion of the striker is arranged in a vertical direction; the axis of the pivotable trigger roller of each of the travel switches is arranged in a horizontal direction.

[0011] According to an embodiment of the present application, there is provided an error-proof floor implementation method using an electrical system, the electrical system being the error-proof floor electrical system according to the above, the method comprising the following steps: in the case that the car of the elevator is parked at the level position of the corresponding floor, when the striker of the car contacts the trigger roller of the travel switch of the corresponding floor so that the first set of contacts is closed, and the elevator control system determines that the electrical interlock device for the corresponding floor is powered, the elevator door is opened.

[0012] According to an embodiment of the present application, there is provided an elevator, comprising the error-proof floor electrical system according to the above.

[0013] The present application has the following beneficial effects: as a set of independent peripheral electrical judgment system and method to cooperate with the CPU of the elevator control system to make redundant judgment, preventing the elevator door lock from malfunctioning when the CPU fails or is confused. When the CPU of the elevator control system judges the absolute floor to run the elevator to a certain floor, the power supply for the electromagnetic lock corresponding to the floor is output, and only when the elevator stops at this floor, the first group of contacts of the travel switch is closed, so that the electrical interlocking device is powered and the electromagnetic lock is actuated, thereby allowing the elevator door to be opened; if the CPU of the elevator control system makes a mistake or crashes when judging the absolute floor, and the actual elevator stop floor is inconsistent with the floor judged by the CPU of the elevator control system, even if the CPU of the elevator control system mistakenly outputs the power supply for the electromagnetic lock of the non-actual elevator stop floor, the electromagnetic lock will not be actuated due to the actual stop floor error and the first group of contacts of the travel switch will not act, thereby avoiding the elevator door from being mistakenly opened, and forming the function of preventing the floor from being mistaken by the electrical system. In addition, the second group of contacts of the travel switch can feed back the actuation signal to the elevator control system to judge whether the first group of contacts has a sticking fault, thereby meeting the demand for detecting and monitoring the anti-mistaken floor electrical system. BRIEF DESCRIPTION OF DRAWINGS

[0014] The exemplary embodiments of the present application will be described in detail below with reference to the accompanying drawings. For the sake of clarity, the same components in the different drawings are denoted by the same reference numerals. It should be noted that the drawings merely show schematic views and are not necessarily drawn to scale. In these drawings:

[0015] Figure 1 is a schematic view showing the setting position of the bumping bow and the travel switch of the anti-mistaken floor electrical system according to the exemplary embodiment of the present application.

[0016] Figure 2 is a structural schematic view of the bumping bow and the travel switch of the anti-mistaken floor electrical system according to the exemplary embodiment of the present application.

[0017] Figure 3 is a schematic view showing the configuration of the anti-mistaken floor electrical system according to the exemplary embodiment of the present application.

[0018] Figure 4 is a feedback circuit constituted by the second group of contacts of the travel switch of the anti-mistaken floor electrical system according to the exemplary embodiment of the present application. DETAILED DESCRIPTION

[0019] The embodiments of the present application will be described in detail below, which are implemented on the premise of the technical solution of the present application, and give detailed implementation modes and specific operation processes, but the protection scope of the present application is not limited to the following embodiments.

[0020] Figure 1 is a schematic view showing the setting position of a striker and a travel switch of a mislayer prevention electrical system according to an exemplary embodiment of the present application. As shown in Figure 1 , the mislayer prevention electrical system according to an exemplary embodiment of the present application can include a striker 10 provided on a portal frame 30 of a car 20 and capable of moving together with the car 20, and a plurality of travel switches 40 respectively fixed on car guides in a shaft and arranged to respectively correspond to the setting position of the striker 10 when the car 20 stops at a landing position of a corresponding floor. Figure 1 Figure 1 Only two travel switches 40 are shown, but the present application is not limited thereto. According to an embodiment of the present application, the number of travel switches corresponds to the number of floors.

[0021] Figure 2 is a structural schematic view showing a striker and a travel switch of a mislayer prevention electrical system according to an exemplary embodiment of the present application.

[0022] As shown in Figure 2 , the striker 10 includes a vertical portion 11 and pre-contact portions 12 provided at upper and lower end portions of the vertical portion 11. The pre-contact portion 12 provided at the upper end portion of the vertical portion 11 is inclined upward from the connection with the vertical portion 11, and the pre-contact portion 12 provided at the lower end portion of the vertical portion 11 is inclined downward from the connection with the vertical portion 11.

[0023] An end portion of each travel switch 40 is provided with a pivotable trigger roller 41. The trigger roller 41 of each travel switch 40 is arranged to be capable of contacting the pre-contact portions 12 and the vertical portion 11 of the striker 10.

[0024] The pre-contact portions 12 are intended to prevent the striker 10 from damaging the travel switches 40 due to the excessive speed of the car 20, and the vertical portion 11 is intended to trigger the travel switches 40. Thus, in the case where the striker 10 moves together with the car 20 to a landing position of a corresponding floor, when the trigger roller 41 of the travel switch 40 of the corresponding floor contacts the middle position of the vertical portion 11 of the striker 10, the corresponding travel switch is triggered. In addition, when the positions of the striker 10 and the travel switches 40 are set, the landing position of the car at each floor is set, and the travel switches 40 are arranged to respectively correspond to the middle position of the vertical portion 11 of the striker 10.

[0025] Preferably, the vertical portion 11 of the striker 10 is provided in a vertical direction, and the axis around which the trigger roller 41 of each travel switch 40 is pivotable is provided in a horizontal direction, so that the frictional force of the sliding of the trigger roller 41 can be reduced, and the pivoting can be smoother.

[0026] ​The travel switch is a commonly used small current master electric appliance. The collision of the moving parts of the production machinery is used to make the contact of the travel switch act to realize the on or off control circuit, so as to achieve a certain control purpose. In the exemplary embodiment of the present application, when the striker 10 contacts the corresponding travel switch 40, the corresponding travel switch 40 is triggered, each travel switch 40 has a first group of contacts and a second group of contacts (not shown). According to the embodiment of the present application, the first group of contacts is a normally open contact, and the second group of contacts is a normally closed contact. When the travel switch is triggered, the first group of contacts is closed, and the second group of contacts is opened.

[0027] Figure 3 is a schematic diagram showing the configuration of the error-proof layer electrical system according to the exemplary embodiment of the present application. As shown in Figure 3 , the travel switch 40 is provided with a first connector assembly 42. Wherein, one end of the first connector assembly 42 is connected with the first group of contacts, and the other end is connected with the electrical interlocking device 50.

[0028] The error-proof layer electrical system according to the exemplary embodiment of the present application can further include an electrical interlocking device 50, which can include an electromagnetic lock. When the electromagnetic lock is powered, the electromagnetic lock is attracted, thereby allowing the elevator door to be opened.

[0029] In the exemplary embodiment of the present application, the electrical interlocking device 50 can be electrically connected with the first group of contacts of the corresponding travel switch 40, and when electrically connected with the first group of contacts of the corresponding travel switch 40, the electrical interlocking device 50 is powered. The electrical interlocking device 50 being powered causes the electromagnetic lock to act, specifically, the electromagnetic lock is attracted, thereby allowing the elevator door to be opened.

[0030] The working principle of the error-proof layer electrical system according to the exemplary embodiment of the present application is as follows: the Central Processing Unit (CPU) of the elevator control system combines with the peripheral sensor to realize absolute position encoding recording and absolute floor judgment. When the CPU of the elevator control system judges that the elevator runs to a certain floor according to the absolute floor judgment, the power supply for the electromagnetic lock corresponding to the floor is output, and only when the elevator stops at this floor, the striker 10 touches the travel switch 40, the first group of contacts of the travel switch 40 is closed, so that the electrical interlocking device 50 is powered, the electromagnetic lock acts, and the elevator door is allowed to be opened; if the CPU of the elevator control system judges that the absolute floor is wrong or crashes, and the actual elevator stop floor is inconsistent with the floor judged by the CPU of the elevator control system, even if the elevator control system mistakenly outputs the power supply for the electromagnetic lock of the floor which is not the actual stop floor of the elevator, due to the error of the floor, the first group of contacts of the travel switch 40 does not act, and the electromagnetic lock does not act, thereby avoiding the misopening of the elevator door, and thus forming the function of preventing the floor from being mistaken by the electrical system.

[0031] Therefore, the error-proof layer electrical system according to the exemplary embodiment of the present application cooperates with the CPU of the elevator control system as an independent peripheral electrical judgment system to make redundant judgment, and prevents the elevator door lock from malfunctioning when the CPU of the elevator control system fails or is in disorder.

[0032] In addition, the error-proof layer electrical system according to the exemplary embodiment of the present application as an independent peripheral electrical judgment system also needs to be detected and monitored. As shown in Figure 3 The travel switch 40 is also provided with a second connector assembly 43. One end of the second connector assembly 43 is connected to the second set of contacts, and the other end is connected to the second set of contacts of the travel switch 40 of the adjacent floor.

[0033] Figure 4 is a feedback circuit composed of the second set of contacts of the travel switch according to the error-proof layer electrical system of the exemplary embodiment of the present application. As shown in Figure 4 The second set of contacts S0, S1, … of each floor are in a closed state, and the second set of contacts of each floor are connected in series and fed back to the elevator control system. That is, the second set of contacts of each travel switch 40 and the elevator control system are connected in series.

[0034] The travel switch 40 feeds back the closing or opening of the second set of contacts, and then the elevator control system makes a judgment. The elevator control system can judge whether the elevator is in the area where the travel switch 40 is triggered, i.e., whether the car is parked at the leveling position of the corresponding floor, according to the individual door zone signal. If the car is parked at the leveling position of the corresponding floor, the second set of contacts of the corresponding travel switch 40 fed back to the elevator control system should be open, otherwise it should be closed. The action signal of the travel switch 40 includes the triggering of the travel switch 40 and the non-triggering of the travel switch 40. When the travel switch 40 is not triggered, the first set of contacts is open and the second set of contacts is closed; when the travel switch 40 is triggered, the first set of contacts is closed and the second set of contacts is open. Therefore, the series connection of the second set of contacts and the elevator control system forms a circuit for feeding back the action signal of the travel switch 40, and further forms a feedback circuit for detecting the action of the first set of contacts of the travel switch 40, which can be used to judge whether the first set of contacts has a sticking failure.

[0035] According to an exemplary embodiment of the present application, there is also provided a method for implementing a fault-tolerant layer using an electrical system, the electrical system being a fault-tolerant layer electrical system according to the above exemplary embodiment, the method comprising the following steps: when the elevator car 20 stops at a corresponding floor at a level position, the contact of the bumper 10 of the elevator car 20 with the trigger roller 41 of the travel switch 40 of the corresponding floor causes the first group of contacts to close, and the elevator control system determines that the power supply to the electrical interlock device for the corresponding floor, the elevator door is opened.

[0036] When the elevator control system CPU determines to run the elevator to a certain floor according to the absolute floor, the power supply for the electromagnetic lock corresponding to the floor is output, and only when the elevator stops at this floor, the bumper 10 touches the travel switch 40, the first group of contacts of the travel switch 40 is closed, so that the electrical interlock device 60 is powered, the electromagnetic lock is actuated, and the door is allowed to be opened; if the CPU of the elevator control system judges that the absolute floor is wrong or crashes, and the actual elevator stops at a floor different from the floor judged by the CPU of the elevator control system, even if the elevator control system mistakenly outputs the power supply for the electromagnetic lock of the floor where the elevator does not actually stop, due to the error of the floor, the first group of contacts of the travel switch 40 will not actuate the wrong electromagnetic lock, and the elevator door will not be opened by mistake, thereby forming a function of the fault-tolerant layer through the electrical system.

[0037] Therefore, the method for implementing a fault-tolerant layer using an electrical system according to the exemplary embodiment of the present application is used as a set of independent peripheral electrical judgment method to cooperate with the CPU of the elevator control system for redundant judgment, so as to prevent the elevator door lock from being mistakenly actuated when the CPU of the elevator control system fails or is wrong.

[0038] According to an exemplary embodiment of the present application, there is also provided an elevator comprising the fault-tolerant layer electrical system of the above exemplary embodiment.

[0039] The various embodiments of the present application are not an exhaustive list of all possible combinations, but are intended to describe representative aspects of the present application, and the content described in the various embodiments can be applied independently or in combination of two or more.

[0040] The description presented by the above exemplary embodiments is only used to illustrate the technical solutions of the present application, and is not intended to be exhaustive, nor is it intended to limit the present application to the exact form described. Obviously, many changes and variations are possible for those skilled in the art based on the above teachings. The exemplary embodiments are selected and described in order to explain the specific principles of the present application and its practical application, so that other skilled in the art can easily understand, implement and utilize various exemplary embodiments of the present application and various selected forms and modifications thereof. The scope of protection of the present application is intended to be defined by the appended claims and their equivalents.

Claims

1. A poka-yoke electrical system, characterized in that, The error-proof floor electrical system comprises: a striker arranged on a portal frame of the elevator car and movable together with the elevator car, the striker comprising a vertical portion and a pre-contact portion arranged at an upper end portion and a lower end portion of the vertical portion, the pre-contact portion arranged at the upper end portion of the vertical portion being inclined upward from a connection with the vertical portion, and the pre-contact portion arranged at the lower end portion of the vertical portion being inclined downward from a connection with the vertical portion; a plurality of travel switches respectively fixed on the car guide rails in the hoistway, and arranged to respectively correspond to the arrangement position of the striker when the elevator car stops at a leveling position of a corresponding floor, the corresponding travel switch being triggered when the striker contacts the corresponding travel switch, each travel switch having a first set of contacts and a second set of contacts; an electrical interlock device electrically connectable with the first set of contacts of the corresponding travel switch, the electrical interlock device being powered when electrically connected with the first set of contacts of the corresponding travel switch; wherein the second set of contacts of each travel switch and the elevator control system are connected in series to form a feedback circuit for detecting the action of the first set of contacts of the corresponding travel switch, the first set of contacts being normally open contacts, and the second set of contacts being normally closed contacts, the first set of contacts being closed and the second set of contacts being opened when the travel switch is triggered. In the case that the elevator car stops at the leveling position of the corresponding floor, the elevator door is opened when the striker of the elevator car contacts the triggering roller of the travel switch of the corresponding floor to make the first set of contacts closed, and the elevator control system determines that the electrical interlock device for the corresponding floor is powered.

2. The error-proof floor electrical system according to claim 1, wherein an end portion of each travel switch is provided with a pivotable triggering roller; the triggering roller of each travel switch is arranged to be capable of contacting the pre-contact portion and the vertical portion of the striker; wherein in the case that the striker moves together with the elevator car to the leveling position of the corresponding floor, the corresponding travel switch is triggered when the triggering roller of the travel switch of the corresponding floor contacts the middle position of the vertical portion of the striker.

3. The error-proof floor electrical system according to claim 2, wherein the vertical portion of the striker is arranged in a vertical direction; an axis on which the triggering roller of each travel switch is pivotable is arranged in a horizontal direction.

4. An elevator, characterized in that The elevator comprises the error-proof floor electrical system according to any one of claims 1 to 3.

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