Elevator safety gear detection method and system, elevator, device, and medium

Abstract

An elevator safety gear detection method and system, an elevator, a device, and a medium. The elevator safety gear detection method comprises: obtaining a first position detection signal of a safety gear in a first direction (S101); obtaining a second position detection signal of the safety gear in a second direction (S102), wherein the first direction and the second direction are perpendicular to each other; on the basis of the first position detection signal and / or the second position detection signal, determining whether the safety gear deviates (S103); and when the safety gear deviates, controlling an elevator to execute a maintenance handling action (S104). By using the method, whether a safety gear deviates can be detected in time and accurately, thereby guaranteeing that safety gears can be effectively used to achieve synchronous braking in scenes where the safety gears are used to stop cars of elevators, improving the safety and reliability of the elevators, and making users feel safer during riding in the elevators.

Description

Elevator safety clamp detection method, system, elevator, equipment and medium

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to Chinese patent application number "202311441729.8" filed by Lingwang Elevator Co., Ltd. on November 1, 2023, with the invention name "Elevator safety clamp detection method, system, elevator, equipment and medium". Technical Field

[0003] The present application relates to the technical field of elevators, and in particular to a method, system, elevator, equipment and medium for detecting safety clamps of an elevator. Background Art

[0004] An elevator's safety clamp is a safety device typically installed on the guide rails between the elevator car and the hoistway. If the elevator car loses control or overspeeds, it automatically activates and applies emergency brakes to prevent the elevator from falling or rushing out of the hoistway, thereby ensuring passenger safety.

[0005] Generally speaking, an elevator is equipped with multiple safety clamps. When the elevator needs to be stopped by the safety clamps, if the safety clamps acting on the elevator car or the wedges of the safety clamps on the counterweight side cannot be lifted synchronously (i.e., they cannot operate synchronously), for example, if the safety clamps are misaligned (such as position offset), the elevator car may be pulled crooked by the weight or its own gravity, thereby affecting the effective stopping of the elevator.

[0006] Summary of the Invention

[0007] Based on this, it is necessary to provide an installation and debugging method, system, equipment and medium for an elevator multi-linkage safety clamp to address the above technical problems, which has the advantages of high synchronization and high accuracy in the installation of the safety clamp, thereby improving the safety and reliability of the elevator.

[0008] In a first aspect, a method for detecting a safety clamp of an elevator is provided, comprising:

[0009] obtaining a first position detection signal of the safety gear in a first direction;

[0010] obtaining a second position detection signal of the safety gear in a second direction, wherein the first direction and the second direction are perpendicular to each other;

[0011] determining whether the safety clamp is deflected according to the first position detection signal and / or the second position detection signal;

[0012] In the event that the safety gear is deflected, the elevator is controlled to perform a maintenance processing action.

[0013] Furthermore, the first direction is horizontal, and obtaining a first position detection signal of the safety gear in the first direction includes:

[0014] When an elevator door closing signal is received, or when a door closing signal is received when the elevator is at the target floor, a first position detection signal of the safety clamp sent by a lateral deviation detection device is obtained, wherein the lateral deviation detection device is set on the current floor and is used to detect the lateral position of the safety clamp.

[0015] Furthermore, the lateral deviation detection device includes an infrared radiation sensor, which is respectively located on both sides of the safety clamp to detect whether the safety clamp has undergone lateral deviation.

[0016] Furthermore, the detecting whether the safety gear has lateral deviation includes:

[0017] When the lateral offset distance of the safety gear is greater than a predetermined error distance or the lateral offset angle is greater than a predetermined error angle, it is determined that the safety gear has been laterally offset.

[0018] Furthermore, the second direction is a longitudinal direction, and obtaining a second position detection signal of the safety gear in the second direction includes:

[0019] A second position detection signal of the wedge of the safety clamp sent by a longitudinal deviation detection device is obtained, wherein the longitudinal deviation detection device is provided on the elevator car and is used to detect the longitudinal position of the wedge.

[0020] Furthermore, the longitudinal position detection device includes a color recognition sensor, a target color area is provided on the wedge block, and the color recognition sensor is used to detect whether the wedge block has longitudinal displacement based on the target color area.

[0021] Furthermore, detecting whether the wedge has undergone longitudinal displacement according to the target color region includes: determining whether the target color region of the wedge is located within the detection region of the color recognition sensor, wherein when the wedge has not undergone longitudinal displacement, the target color region falls within the detection region, and an error tolerance distance is set between a boundary of the target color region and a boundary of the detection region;

[0022] If not, it is determined that the wedge is longitudinally offset.

[0023] Furthermore, when the safety gear is deflected, controlling the elevator to perform a maintenance processing action includes:

[0024] In the event that the safety gear deflects, an alarm is triggered;

[0025] And / or, controlling the elevator to return to the base station and stop.

[0026] In a second aspect, a safety clamp detection system for an elevator is provided, comprising:

[0027] An acquisition module, configured to obtain a first position detection signal of the safety gear in a first direction, and obtain a second position detection signal of the safety gear in a second direction, wherein the first direction and the second direction are perpendicular to each other;

[0028] a judgment module, configured to determine whether the safety clamp is offset according to the first position detection signal and / or the second position detection signal;

[0029] A control module is used to control the elevator to perform maintenance processing actions when the safety clamp is offset.

[0030] In a third aspect, an elevator is provided, comprising: the elevator safety clamp detection system according to the second aspect.

[0031] In a fourth aspect, a computer device is provided, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor. When the processor executes the program, the steps of the elevator safety clamp detection method according to the first aspect and any possible implementation of the first aspect are implemented.

[0032] In a fifth aspect, a computer-readable storage medium is provided, on which a computer program is stored. When the program is executed by a processor, the steps of the elevator safety clamp detection method according to the first aspect and any possible implementation of the first aspect are implemented.

[0033] By adopting the embodiments of the present application, by obtaining the lateral position detection signal and the longitudinal position detection signal of the safety clamp, it is possible to accurately determine whether the safety clamp has been offset, and in the event that the safety clamp has been offset, the elevator can be promptly controlled to perform maintenance processing. Thus, in the scenario where the elevator stops the car by the safety clamp, the safety clamp can be effectively used to achieve synchronous braking, thereby improving the safety and reliability of the elevator and enhancing the user's sense of safety when riding in the elevator. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Other features, objects and advantages of the present application will become more apparent upon reading the detailed description of non-limiting embodiments made with reference to the following drawings:

[0035] FIG1 is a flow chart of a method for detecting a safety clamp of an elevator according to an embodiment of the present application;

[0036] FIG2 is a top view of the positional relationship between the infrared beam sensor and the safety gear arranged in the elevator safety gear detection method provided by an embodiment of the present application;

[0037] FIG3 is a schematic diagram of a bottom floor leveling signal triggering switch in a safety clamp detection method for an elevator provided by an embodiment of the present application;

[0038] FIG4 is a schematic diagram of a main control board in a safety clamp detection method for an elevator provided in an embodiment of the present application;

[0039] FIG5 is a circuit diagram of an infrared beam sensor in a safety clamp detection method for an elevator provided in an embodiment of the present application;

[0040] FIG6 is a schematic diagram of a target color area on a safety gear in a method for detecting a safety gear of an elevator provided by an embodiment of the present application;

[0041] FIG7 is a schematic diagram showing a target color area on a cut block identified by a color recognition sensor in a method for detecting safety gear of an elevator provided by an embodiment of the present application;

[0042] FIG8 is a schematic diagram of an infrared device detection device in a safety clamp detection method for an elevator provided in an embodiment of the present application;

[0043] FIG9 is a schematic diagram of a color device detection device in a safety clamp detection method for an elevator provided in an embodiment of the present application;

[0044] FIG10 is a structural block diagram of a safety clamp detection system for an elevator provided in an embodiment of the present application;

[0045] FIG11 is a structural block diagram of a computer device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0046] The present application will be further described in detail below with reference to the embodiments and accompanying drawings. It should be understood that the specific embodiments described herein are intended only to illustrate the relevant application and are not intended to limit the application. It should also be noted that, for ease of description, only the portions relevant to the application are shown in the accompanying drawings.

[0047] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments in this application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0048] An elevator's safety clamp is a safety device typically installed on the guide rails between the elevator car and the hoistway. The safety clamp's function is to automatically activate and apply emergency braking to the elevator if the car loses control or overspeeds, preventing it from falling or rushing out of the hoistway, thereby ensuring passenger safety. However, if the safety clamp acting on the elevator car or the wedge of the safety clamp on the counterweight side are not lifted synchronously, for example, if the safety clamp is misaligned (e.g., offset), the elevator car may be pulled crooked by the weight or its own gravity, affecting the elevator's effective stopping.

[0049] Based on this, the embodiments of the present invention provide an elevator safety clamp detection method, system, elevator, equipment and medium that can quickly and effectively detect whether the position of the elevator's safety clamp is accurate, thereby ensuring the synchronization of the safety clamp and improving the safety and reliability of elevator riding.

[0050] FIG1 is a flow chart of a safety clamp detection method according to an embodiment of the present application. As shown in FIG1 , a safety clamp detection method for an elevator according to an embodiment of the present application specifically includes the following steps:

[0051] S101: Obtain a first position detection signal of the safety gear in a first direction.

[0052] The position of the safety clamp in a certain direction, such as a first direction, can be detected by the deviation detection device, and a corresponding position detection signal, ie, a first position detection signal, can be output.

[0053] Specifically, obtaining a first position detection signal of the safety gear in a first direction includes:

[0054] When an elevator door closing signal is received, or when a door closing signal is received when the elevator is at the target floor, a first position detection signal of the safety clamp sent by a lateral deviation detection device is obtained, wherein the lateral deviation detection device is set on the current floor and is used to detect the lateral position of the safety clamp.

[0055] The first direction is, for example, the lateral direction, i.e., the horizontal direction. Accordingly, the first position detection signal is a lateral position detection signal, which can detect, for example, whether the safety gear has experienced lateral displacement. Specifically, when an elevator door closing signal is received, or when a door closing signal is received when the elevator is at the target floor, a lateral position detection signal of the safety gear transmitted by the lateral displacement detection device is obtained. The lateral displacement detection device is used to detect whether the safety gear has experienced lateral displacement.

[0056] The safety clamp lateral position detection signal sent by the lateral deviation detection device can be obtained when the elevator door closing signal is received. That is, when the elevator door closes, the safety clamp lateral position detection signal sent by the deviation detection device is obtained. In this way, the safety clamp lateral position detection signal sent by the deviation detection device can be obtained regardless of which floor the elevator reaches and the door closes. In this example, a lateral deviation detection device is generally installed on each floor, so that the safety clamp lateral position detection signal sent by the deviation detection device can be obtained regardless of which floor the elevator reaches and the door closes.

[0057] Of course, to reduce the cost of installing a lateral deviation detection device, it is also possible to install a lateral deviation detection device on a specific floor or a subset of floors. In this example, assuming the lateral deviation detection device is installed on the target floor, for example, the target floor is the ground floor, then the lateral deviation detection device is installed on the ground floor. In this way, when the elevator door closes on the ground floor, the safety gear lateral position detection signal sent by the deviation detection device is obtained.

[0058] A trigger switch can be installed on the ground floor. When the elevator reaches the ground floor, the trigger switch is triggered, confirming the elevator's presence on the ground floor. At this point, when the elevator door closes, the offset detection device is activated to detect the lateral position of the safety gear. This allows for intelligent control of the offset detection device's operation and stopping, allowing it to be turned off when not needed, thus reducing energy consumption.

[0059] In one specific embodiment of the present invention, the lateral displacement detection device includes, for example, infrared beam sensors located on either side of the safety clamp to detect lateral displacement of the safety clamp. FIG2 shows a top view of the positional relationship between the arranged infrared beam sensors (also known as beam infrared switches) and the safety clamp. FIG2 illustrates an elevator equipped with six safety clamps, with the safety clamps arranged symmetrically in pairs. For example, as shown in FIG2 , six pairs of infrared beam sensors can be arranged, i.e., two pairs of infrared beam sensors are arranged on either side of the symmetrically arranged safety clamps. It can be seen that when the safety clamp is not displaced laterally, the infrared light emitted by the transmitting end of the infrared beam sensor is received by the corresponding receiving end. When the infrared light emitted by the transmitting end of one or more pairs of infrared beam sensors cannot be received by the corresponding receiving end, it indicates that the corresponding safety clamp has displaced, blocking the infrared light. In this case, a first position detection signal is output.

[0060] In the above example, a certain lateral deviation error is generally allowed for the safety gear. That is, if the lateral deviation of the safety gear does not exceed the lateral deviation error, then even though the safety gear may have slightly deviated, it does not exceed the lateral deviation error. In this case, the safety gear is considered to have not deviated. Specifically, the infrared beam sensor detects whether the safety gear has deviated laterally, including determining that the safety gear has deviated laterally when the lateral deviation distance of the safety gear is greater than a predetermined error distance or the lateral deviation angle is greater than a predetermined error angle. As shown in Figure 2, in the case where the safety gear has not deviated laterally, for example, a pair of infrared beam sensors are disposed on either side of the safety gear above the safety gear, and the infrared rays emitted by the pair of infrared beam sensors are set at a certain error tolerance distance from the upper side of the safety gear. In this way, when the safety gear has slightly deviated laterally, the lateral deviation distance of the safety gear will not exceed the predetermined error distance, and the lateral deviation angle will not exceed the predetermined error angle. Therefore, even if the safety gear has slightly deviated, it is considered that the safety gear has not deviated. This can reduce false detections of safety gear deviated and improve safety gear detection accuracy.

[0061] As shown in Figure 3, this is a schematic diagram of the trigger switch on the bottom floor (i.e., the bottom floor leveling signal trigger switch). When the elevator reaches the bottom floor, the trigger switch is triggered, thereby determining that the elevator has reached the bottom floor. This signal can be directly given to the infrared beam sensor to prepare the infrared beam sensor for operation.

[0062] Next, upon receiving the elevator's door-closing signal, the infrared beam sensor is controlled to operate. In a specific example, the elevator's main control board can send a door-closing signal to the infrared beam sensor, causing the infrared beam sensor to begin operating, i.e., detecting whether the safety clamp is laterally offset. Figure 4 shows a schematic diagram of the elevator's main control board. After determining that the elevator door is closed, the main control board transmits a door-closing signal TK to the infrared beam sensor.

[0063] After receiving the door closing signal TK, the infrared counter-beam sensor begins operation. Figure 5 shows a schematic diagram of the infrared counter-beam sensor circuit connection. As can be seen from Figure 5, upon receiving the door closing signal TK, the circuit is closed, thereby energizing the infrared counter-beam sensor and commencing detection. When at least one set of infrared counter-beam sensors detects lateral displacement of the corresponding safety clamp, it issues a first position detection signal HM. Figure 5 shows three sets of infrared counter-beam sensors. The first position detection signals emitted by these three sets of infrared counter-beam sensors are respectively designated as HM1, HM2, HM3, HM4, HM5, and HM6. Similarly, for the six sets of infrared counter-beam sensors, the first position detection signals emitted can be respectively designated as HM1, HM2, HM3, HM4, HM6, and HM6.

[0064] It should be noted that when a heavy object or a person enters the elevator, assuming that the heavy object or the person is in a corner of the elevator car, the weight carried in the car is unbalanced. In this case, the elevator is prone to tilt, that is, the safety clamp is prone to lateral displacement. Therefore, in an embodiment of the present invention, the lateral displacement detection of the safety clamp is performed when the elevator door is closed.

[0065] S102: Obtain a second position detection signal of the safety clamp in a second direction, wherein the first direction and the second direction are perpendicular to each other.

[0066] The position of the safety gear in a certain direction, such as the second direction, can be detected by another offset detection device, and a corresponding position detection signal, ie, a second position detection signal, can be output.

[0067] Specifically, obtaining a second position detection signal of the safety clamp in the second direction includes: obtaining a second position detection signal of the wedge block of the safety clamp sent by a longitudinal offset detection device, wherein the longitudinal offset detection device is arranged on the elevator car and is used to detect the longitudinal position of the wedge block.

[0068] When the blocks of the safety clamp are longitudinally offset, if the elevator loses control or overspeeds, the safety clamp is activated and the wedges of different safety clamps will not be able to lock the track synchronously. Therefore, in an embodiment of the present invention, a longitudinal offset detection device is provided to achieve real-time detection of the longitudinal position of the wedges of the safety clamp.

[0069] In one embodiment of the present invention, the second direction is longitudinal, for example, and accordingly, the second position detection signal is a longitudinal position detection signal. The longitudinal position detection device includes, for example, a color recognition sensor, and a target color area is provided on the wedge. The color recognition sensor is used to detect whether the wedge has undergone longitudinal displacement based on the target color area. For example, if the target color area is a red area, when the wedge of the safety clamp does not undergo up-down (longitudinal) displacement, the color recognition sensor is pre-set to the target color area of ​​the wedge, that is, the color recognition sensor is positioned on the recognition line to face the target color area of ​​the wedge. Then, when the wedge of the safety clamp does not undergo longitudinal displacement, the color recognition sensor can identify the target color area of ​​the wedge. Assuming that the wedge of the safety clamp undergoes longitudinal displacement, the color recognition sensor will not be able to precisely identify the target color area of ​​the wedge. Therefore, it recognizes that the wedge has undergone longitudinal movement and outputs the second position detection signal, that is, the longitudinal position detection signal.

[0070] FIG6 shows a target color area set on a wedge of a safety gear. FIG7 shows that when the wedge is not longitudinally offset, the color recognition sensor 1110 can recognize the target color area on the wedge. As shown in FIG7 , the stripe-shaped area on the wedge is the target color area. In this case, the recognition signal of the color recognition sensor 1110 is configured to recognize this position, and the target color area on the wedge can be recognized. As shown in Figures 6 and 7, when the wedge block undergoes longitudinal displacement, for example, moves downward, the color recognition sensor 1110 cannot or cannot completely recognize the target color area on the wedge block, that is, the wedge block moves downward, and the strip-shaped area on the wedge block, i.e., the target color area, will move downward accordingly. As a result, the recognition signal of the color recognition sensor 1110 will not be able to completely or cannot recognize the target color area on the wedge block. For example, if the target color area is a red area, the color recognition sensor 1110 cannot or cannot completely recognize the red area. That is, if the wedge block moves downward a large amount, the recognition signal of the color recognition sensor 1110 will not be able to recognize the red area. If the wedge block moves downward a small amount, the recognition signal of the color recognition sensor 1110 will not be able to completely recognize the red area. In this case, it is indicated that the wedge block has shifted in the upper and lower positions, and a longitudinal position detection signal is output.

[0071] In this example, the color recognition sensor detects whether the wedge has experienced longitudinal offset based on the target color region. This includes determining whether the target color region of the wedge is within the detection area of ​​the color recognition sensor. If the wedge has not experienced longitudinal offset, the target color region falls within the detection area, and a tolerance distance is set between the boundary of the target color region and the boundary of the detection area. If not, longitudinal offset is determined to have occurred. In other words, slight longitudinal offset of the wedge is permitted, as long as it is within the tolerance range. This prevents false detection of wedge offset, improving detection accuracy and reliability.

[0072] S103: Determine whether the safety clamp is offset according to the first position detection signal and / or the second position detection signal.

[0073] For example, if the safety gear is determined to have lateral displacement according to the first position detection signal, or if the wedge is determined to have longitudinal displacement according to the second position detection signal, or if both the safety gear and the wedge are determined to have lateral displacement and longitudinal displacement, then the safety gear is determined to have been displaced.

[0074] S104: When the safety clamp is deflected, the elevator is controlled to perform maintenance processing actions.

[0075] Methods for controlling an elevator to perform maintenance actions include, but are not limited to, prompting and returning for repair. For example, if the safety clamp deflects, controlling the elevator to perform maintenance actions may include triggering an alarm and / or controlling the elevator to return to the base station and stop. Triggering the alarm may involve controlling an audible warning device to sound an alarm, or generating a prompt message and sending it to a smart terminal of a relevant person, such as, but not limited to, a smartphone or tablet. As shown in FIG8 , if a lateral deviation of the safety clamp is detected, the corresponding light will illuminate. For example, if the first position detection signal HM1 indicates that the corresponding safety clamp has deflected, the prompt light EL1 will illuminate. Similarly, if the first position detection signal HM2 indicates that the corresponding safety clamp has deflected, the prompt light EL2 will illuminate. If the first position detection signal HM3 indicates that the corresponding safety clamp has deflected, the prompt light EL3 will illuminate, and so on. Simultaneously, the audible and visual warning devices will be triggered to provide a prompt. As shown in Figure 9 and combined with Figure 7, assuming that a longitudinal offset of the wedge of the safety clamp is detected, the corresponding light will be lit. For example, taking 6 safety clamps as an example, the 6 safety clamps are named safety clamp No. 1, safety clamp No. 2, safety clamp No. 3, safety clamp No. 4, safety clamp No. 5 and safety clamp No. 6, respectively. It is assumed that safety clamp No. 1 corresponds to the second position detection signal YC1, safety clamp No. 2 corresponds to the second position detection signal YC2, safety clamp No. 3 corresponds to the second position detection signal YC3, safety clamp No. 4 corresponds to the second position detection signal YC4, safety clamp No. 5 corresponds to the second position detection signal YC5, and safety clamp No. 6 corresponds to the second position detection signal YC6, and YC1 corresponds to the warning light EL7, YC2 corresponds to the warning light EL8, YC3 corresponds to the warning light EL9, YC4 corresponds to the warning light EL10, YC5 corresponds to the warning light EL11, and YC6 corresponds to the warning light EL12. Assuming that the wedge block of safety clamp No. 1 is longitudinally offset, the second position detection signal YC1 is output to indicate that the corresponding wedge block of safety clamp No. 1 is laterally offset, and the warning light EL7 is lit. Similarly, the second position detection signal YC2 indicates that the corresponding wedge block of safety clamp No. 2 is laterally offset, and the warning light EL8 is lit, and so on. At the same time, the sound and light warning device in Figure 9 is triggered to give a warning.

[0076] The color device detection device in Figure 9 can be installed on the top of an elevator car. Furthermore, it is possible to distinguish between sending a prompt message to the relevant personnel's smart terminal when the warning light in the infrared device detection device is illuminated and sending a prompt message to the relevant personnel's smart terminal when the warning light in the color device detection device is illuminated. For example, when the infrared device detection device sends a prompt message to the relevant personnel's smart terminal, it can simultaneously indicate that it was sent by the infrared device detection device. Similarly, when the color device detection device sends a prompt message to the relevant personnel's smart terminal, it can simultaneously indicate that it was sent by the color device detection device. Thus, the prompt on the smart terminal can distinguish whether the corresponding safety clamp has experienced lateral displacement or longitudinal displacement of the wedge of the corresponding safety clamp.

[0077] 2 to 8 , in the safety gear detection method according to the embodiment of the present invention, the detection is divided into two types of detection, namely, whether the safety gear is laterally deflected and whether the wedge of the safety gear is vertically deflected.

[0078] For the six safety clamps, lateral deviation detection is performed by six infrared sensors, corresponding to HW1-HW6. The infrared sensors are controlled by the door-closing signal TK from the elevator's main control board and the bottom leveling trigger switch. When the elevator reaches the bottom leveling floor, the leveling signal triggers the switch to close. When the elevator main control board outputs the door-closing signal TK, the TK relay coil energizes, and the infrared sensors begin detecting. If the elevator car tilts forward or backward due to a load, or tilts when reaching the bottom leveling floor empty, the infrared switches trigger, outputting the corresponding HM1-HM6 signals to the infrared device detection device and illuminating the corresponding EL1-EL6 warning lights. These can also trigger an elevator stop, for example, notifying nearby maintenance personnel via the IoT for repairs. Maintenance personnel can identify safety clamp anomalies by observing which warning lights are illuminated. Six RGB color recognition sensors detect whether the wedge is moving up or down. Power is supplied to the elevator car's top box. If any of the six sensors detect movement, they send a signal to the elevator's main control board, which then returns the elevator to the base station and notifies maintenance personnel for repairs. This ensures that even when the elevator is stopped by the safety clamp, the safety clamp can be used to synchronize braking, ensuring passenger safety.

[0079] According to the safety clamp detection method for an elevator in an embodiment of the present invention, by obtaining the lateral position detection signal and the longitudinal position detection signal of the safety clamp, it is possible to accurately determine whether the safety clamp has been deviated. In the event that the safety clamp has been deviated, the elevator can be promptly controlled to perform maintenance processing. Thus, in the scenario where the elevator car is stopped by the safety clamp, the safety clamp can be effectively used to achieve synchronous braking, thereby improving the safety and reliability of the elevator and enhancing the user's sense of safety when riding in the elevator.

[0080] Figure 10 is a block diagram of a safety clamp detection system for an elevator according to an embodiment of the present application. As shown in Figure 10, the safety clamp detection system for an elevator according to an embodiment of the present application includes: an acquisition module 910, a judgment module 920 and a control module 930, wherein:

[0081] An acquisition module 910 is configured to obtain a first position detection signal of the safety gear in a first direction and a second position detection signal of the safety gear in a second direction, wherein the first direction and the second direction are perpendicular to each other;

[0082] a judgment module 920, configured to determine whether the safety clamp is offset according to the first position detection signal and / or the second position detection signal;

[0083] The control module 930 is used to control the elevator to perform maintenance processing actions when the safety clamp is offset.

[0084] The safety clamp detection system for an elevator according to an embodiment of the present invention can accurately determine whether the safety clamp has been deviated by obtaining the lateral position detection signal and the longitudinal position detection signal of the safety clamp. In the event that the safety clamp has been deviated, the elevator can be promptly controlled to perform maintenance processing. Thus, when the elevator car is stopped by the safety clamp, the safety clamp can be effectively used to achieve synchronous braking, thereby improving the safety and reliability of the elevator and enhancing the user's sense of safety when riding in the elevator.

[0085] The specific definitions of the elevator safety clamp detection system can be found in the definitions of the elevator safety clamp detection method above and will not be repeated here. The various modules of the aforementioned elevator safety clamp detection system can be implemented in whole or in part through software, hardware, or a combination thereof. These modules can be embedded in or independent of a processor in a computer device in hardware form, or stored in a computer device memory in software form, so that the processor can call and execute the corresponding operations of each module.

[0086] Reference is now made to FIG11 , which shows a schematic diagram of the structure of a computer device suitable for implementing an embodiment of the present application.

[0087] As shown in FIG11 , a computer system 1000 includes a central processing unit (CPU) 1001, which can perform various appropriate actions and processes according to a program stored in a read-only memory (ROM) 1002 or a program loaded from a storage unit 1008 into a random access memory (RAM) 1003. Various programs and data required for the system's operating instructions are also stored in the RAM 1003. The CPU 1001, ROM 1002, and RAM 1003 are connected to each other via a bus 1004. An input / output (I / O) interface 1005 is also connected to the bus 1004.

[0088] The following components are connected to the I / O interface 1005: an input section 1006 including a keyboard, a mouse, and the like; an output section 1007 including devices such as a cathode ray tube (CRT), a liquid crystal display (LCD), and a speaker; a storage section 1008 including a hard disk; and a communication section 1009 including a network interface card such as a LAN card or a modem. The communication section 1009 performs communication processing via a network such as the Internet. A drive 1010 is also connected to the I / O interface 1005 as needed. A removable medium 1011, such as a magnetic disk, an optical disk, a magneto-optical disk, or a semiconductor memory, is installed in the drive 1010 as needed, so that computer programs read therefrom can be installed into the storage section 1008 as needed.

[0089] In particular, according to an embodiment of the present application, the process described above with reference to flowchart Figure 1 can be implemented as a computer software program. For example, an embodiment of the present application includes a computer program product, which includes a computer program carried on a computer-readable medium, and the computer program includes a program code for executing the method shown in the flowchart. In such an embodiment, the computer program includes a program code for executing the method shown in the flowchart. In such an embodiment, the computer program can be downloaded and installed from a network via the communication section 1009, and / or installed from a removable medium 1011. When the computer program is executed by the central processing unit (CPU) 1001, the above-mentioned functions defined in the system of the present application are executed.

[0090] It should be noted that the computer-readable medium shown in this application can be a computer-readable signal medium or a computer-readable storage medium, or any combination of the two. The computer-readable storage medium can be, for example, but not limited to, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, device, or device, or any combination of the above. More specific examples of computer-readable storage media can include, but are not limited to: an electrical connection with one or more wires, a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the above. In this application, a computer-readable storage medium can be any tangible medium that contains or stores a program that can be used by or in conjunction with an instruction execution system, device, or device. In this application, a computer-readable signal medium can include a data signal propagated in baseband or as part of a carrier wave, which carries computer-readable program code. This propagated data signal can take a variety of forms, including but not limited to electromagnetic signals, optical signals, or any suitable combination of the above. A computer-readable signal medium may also be any computer-readable medium other than a computer-readable storage medium that can transmit, propagate, or transfer a program for use by or in conjunction with an instruction execution system, apparatus, or device. The program code contained on the computer-readable medium may be transmitted using any suitable medium, including but not limited to wireless, wire, optical cable, RF, or any suitable combination thereof.

[0091] The flowcharts and block diagrams in the accompanying drawings illustrate the possible implementation architecture, functions and operating instructions of the systems, methods and computer program products according to various embodiments of the present application. In this regard, each box in the flowchart or block diagram can represent a module, program segment, or a part of code, and the aforementioned module, program segment, or a part of code contains one or more executable instructions for realizing the specified logical function. It should also be noted that in some alternative implementations, the functions marked in the box can also occur in a different order than the order marked in the accompanying drawings. For example, the boxes represented by two connections can actually be executed substantially in parallel, and they can sometimes be executed in the opposite order, depending on the functions involved. It should also be noted that each box in the block diagram and / or flowchart, and the combination of the boxes in the block diagram and / or flowchart, can be implemented using a dedicated hardware-based system that performs the specified function or operating instruction, or can be implemented using a combination of dedicated hardware and computer instructions.

[0092] The units or modules involved in the embodiments described in this application may be implemented in software or hardware. The units or modules described may also be provided in a processor. The names of these units or modules do not, in certain circumstances, constitute limitations on the units or modules themselves.

[0093] The present application also provides a computer-readable storage medium storing a computer program, wherein a processor executes the computer program to implement the aforementioned elevator safety clamp detection method embodiment, for example, to perform the steps of the elevator safety clamp detection method according to any embodiment of the present application.

[0094] The present invention provides a computer program product comprising instructions that, when executed, cause the method described in the present invention to be performed. For example, the steps of the elevator safety clamp detection method shown in FIG1 can be executed, such as the steps of the elevator safety clamp detection method according to any of the embodiments of the present invention.

[0095] The technical features of the above embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0096] The above embodiments merely illustrate several implementation methods of the present application. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that a person of ordinary skill in the art may make various modifications and improvements without departing from the spirit of the present application, all of which fall within the scope of protection of the present application. Therefore, the scope of protection of the present patent application shall be determined by the appended claims.

Claims

1. A method for detecting a safety clamp of an elevator, characterized in that: include: Obtaining a first position detection signal of the safety clamp in a first direction, wherein the first direction is a lateral direction, the obtaining of the first position detection signal of the safety clamp in the first direction comprises: when receiving an elevator door closing signal, or receiving a door closing signal when the elevator is at a target floor, obtaining a first position detection signal of the safety clamp sent by a lateral deviation detection device, wherein the lateral deviation detection device is arranged on a current floor and is used to detect a lateral position of the safety clamp; Obtaining a second position detection signal of the safety clamp in a second direction, wherein the first direction and the second direction are perpendicular to each other, comprising: obtaining a second position detection signal of a wedge of the safety clamp sent by a longitudinal offset detection device, wherein the longitudinal offset detection device is disposed on the elevator car and is used to detect the longitudinal position of the wedge; determining whether the safety clamp is offset according to the first position detection signal and the second position detection signal; In the case where the safety clamp is deviated, the elevator is controlled to perform a maintenance processing action.

2. The elevator safety clamp detection method according to claim 1, characterized in that: The lateral deviation detection device comprises an infrared counter-radiation sensor, and the infrared counter-radiation sensor is respectively located on both sides of the safety clamp to detect whether the safety clamp is laterally deviated.

3. The elevator safety clamp detection method according to claim 2, characterized in that: The detecting whether the safety clamp is laterally deviated comprises: When the lateral offset distance of the safety clamp is greater than a predetermined error distance or the lateral offset angle is greater than a predetermined error angle, it is determined that the safety clamp is laterally offset.

4. The elevator safety clamp detection method according to claim 1, characterized in that: The longitudinal position detection device comprises a color recognition sensor. A target color area is provided on the wedge block. The color recognition sensor is used to detect whether the wedge block is longitudinally offset according to the target color area.

5. The elevator safety clamp detection method according to claim 4, characterized in that: The detecting whether the wedge block is longitudinally offset according to the target color area comprises: determining whether the target color area of ​​the wedge block is located within the detection area of ​​the color recognition sensor, wherein when the wedge block is not longitudinally offset, the target color area falls within the detection area, and an error tolerance distance is set between the boundary of the target color area and the boundary of the detection area; If not, it is determined that the wedge is longitudinally offset.

6. The elevator safety clamp detection method according to claim 1, characterized in that: When the safety clamp is offset, controlling the elevator to perform a maintenance process comprises: In the event that the safety clamp is deflected, an alarm is triggered; And / or, controlling the elevator to return to the base station and stop.

7. An elevator safety clamp detection system, characterized in that: include: an acquisition module, for acquiring a first position detection signal of the safety clamp in a first direction, wherein the first direction is a lateral direction, and the acquiring of the first position detection signal of the safety clamp in the first direction comprises: when receiving an elevator door closing signal, or receiving a door closing signal when the elevator is at a target floor, acquiring the first position detection signal of the safety clamp sent by a lateral offset detection device, wherein the lateral offset detection device is arranged on a current floor and is used to detect the lateral position of the safety clamp; and acquiring a second position detection signal of the safety clamp in a second direction comprises: acquiring a second position detection signal of a wedge of the safety clamp sent by a longitudinal offset detection device, wherein the longitudinal offset detection device is arranged on the elevator car and is used to detect the longitudinal position of the wedge, wherein the first direction and the second direction are perpendicular to each other; a judgment module, used for determining whether the safety clamp is offset according to the first position detection signal and the second position detection signal; The control module is used to control the elevator to perform maintenance processing actions when the safety clamp is offset.

8. An elevator, characterized in that: include: The safety clamp detection system for an elevator according to claim 7.

9. A computer device comprising a memory, a processor and a computer program stored in the memory and executable on the processor, characterized in that: When the processor executes the program, the safety clamp detection method for the elevator according to any one of claims 1-6 is implemented.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the program is executed by a processor, the safety clamp detection method for an elevator according to any one of claims 1 to 6 is implemented.

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