Elevator brake performance detection method, device, equipment and storage medium

Abstract

The application relates to an elevator braking performance detection method and device, computer equipment, a storage medium and a computer program product. The method comprises the following steps: obtaining the relative displacement between the brake pressure plate of the elevator brake corresponding to the target elevator after braking of the target elevator to be detected and the brake ratchet of the elevator brake; obtaining the braking distance of the elevator brake according to the relative displacement; and detecting the braking performance of the target elevator by using the braking distance of the elevator brake. The method can accurately detect the braking performance of the target elevator.

Description

TECHNICAL FIELD

[0001] The present application relates to the elevator detection technical field, in particular to an elevator brake performance detection method and device, computer equipment, storage medium and computer program product. BACKGROUND

[0002] With the development of the elevator detection technical field, an elevator brake performance detection method appears, which directly obtains the moving distance of the elevator after the brake switch is started as the brake distance of the elevator, and then further calculates the brake torque of the elevator to detect the brake performance of the elevator.

[0003] However, in actual situations, the elevator brake will idle for a certain distance before starting to brake after the brake switch is started, which results in that the above-mentioned moving distance of the elevator is different from the actual brake distance of the elevator. The above-mentioned technical solution directly takes the above-mentioned moving distance of the elevator as the actual brake distance of the elevator, which will make the further calculation of the brake torque of the elevator inaccurate, thereby resulting in inaccurate detection results of the brake performance of the elevator. SUMMARY

[0004] Therefore, it is necessary to provide an elevator brake performance detection method, device, computer equipment, computer readable storage medium and computer program product capable of accurately detecting the brake performance of the elevator in view of the above-mentioned technical problems.

[0005] In a first aspect, the present application provides an elevator brake performance detection method. The method comprises:

[0006] obtaining the relative displacement between the brake pressure plate of the elevator brake corresponding to the target elevator and the brake ratchet of the elevator brake after the target elevator is braked;

[0007] obtaining the brake distance of the elevator brake according to the relative displacement;

[0008] detecting the brake performance of the target elevator by using the brake distance of the elevator brake.

[0009] In one embodiment, the relative displacement is the relative rotation angle between the brake pressure plate and the brake ratchet after the target elevator is braked; the obtaining the relative displacement between the brake pressure plate of the elevator brake corresponding to the target elevator and the brake ratchet of the elevator brake after the target elevator is braked comprises: obtaining the mark point distance between the pressure plate mark point of the brake pressure plate and the ratchet mark point of the brake ratchet after the target elevator is braked; the pressure plate mark point and the ratchet mark point are at the same position before the target elevator is braked; and the relative rotation angle is obtained based on the mark point distance.

[0010] In one of the embodiments, the obtaining the relative rotation angle based on the mark point distance comprises: obtaining the relative rotation angle between the brake pressure plate and the brake ratchet based on the mark point distance and a pressure plate diameter of the brake pressure plate obtained in advance.

[0011] In one of the embodiments, the obtaining the brake distance of the elevator brake according to the relative displacement comprises: obtaining a chain wheel circumference of a step chain wheel of the elevator brake; and obtaining the brake distance of the elevator brake according to the chain wheel circumference and the relative rotation angle.

[0012] In one of the embodiments, the detecting the brake performance of the target elevator by using the brake distance of the elevator brake comprises: obtaining a brake torque of the elevator brake based on the brake distance of the elevator brake; if the brake torque is greater than or equal to a preset torque threshold, determining that a brake performance detection result of the target elevator is a detection pass; and if the brake torque is less than the preset torque threshold, determining that the brake performance detection result of the target elevator is a detection fail.

[0013] In one of the embodiments, the obtaining the brake torque of the elevator brake based on the brake distance of the elevator brake comprises: obtaining a brake time for the elevator brake to generate the brake distance; obtaining a brake deceleration of the elevator brake based on the brake time and the brake distance; and obtaining the brake torque of the elevator brake based on the brake deceleration.

[0014] In one of the embodiments, the brake distance is a plurality of brake distances corresponding to different brake distance acquisition times; and the detecting the brake performance of the target elevator by using the brake distance of the elevator brake comprises: obtaining an average value of the brake distances, and detecting the brake performance of the target elevator by using the average value of the brake distances.

[0015] In a second aspect, the present application further provides an elevator brake performance detection device. The device comprises:

[0016] a relative displacement obtaining module, configured to obtain a relative displacement between a brake pressure plate of an elevator brake corresponding to a target elevator to be detected and a brake ratchet of the elevator brake after the target elevator is braked;

[0017] a brake distance obtaining module, configured to obtain a brake distance of the elevator brake according to the relative displacement;

[0018] a brake performance detection module, configured to detect a brake performance of the target elevator by using the brake distance of the elevator brake.

[0019] In a third aspect, the present application provides a computer device. The computer device comprises a memory and a processor, the memory stores a computer program, and the processor implements the following steps when executing the computer program:

[0020] obtaining a relative displacement between a brake pressure plate of an elevator brake corresponding to a target elevator to be detected and a brake ratchet of the elevator brake after braking of the target elevator;

[0021] obtaining a brake distance of the elevator brake according to the relative displacement;

[0022] detecting a brake performance of the target elevator by using the brake distance of the elevator brake.

[0023] In a fourth aspect, the present application provides a computer readable storage medium. The computer readable storage medium stores a computer program, and the computer program implements the following steps when executed by a processor:

[0024] obtaining a relative displacement between a brake pressure plate of an elevator brake corresponding to a target elevator to be detected and a brake ratchet of the elevator brake after braking of the target elevator;

[0025] obtaining a brake distance of the elevator brake according to the relative displacement;

[0026] detecting a brake performance of the target elevator by using the brake distance of the elevator brake.

[0027] In a fifth aspect, the present application provides a computer program product. The computer program product comprises a computer program, and the computer program implements the following steps when executed by a processor:

[0028] obtaining a relative displacement between a brake pressure plate of an elevator brake corresponding to a target elevator to be detected and a brake ratchet of the elevator brake after braking of the target elevator;

[0029] obtaining a brake distance of the elevator brake according to the relative displacement;

[0030] detecting a brake performance of the target elevator by using the brake distance of the elevator brake.

[0031] The aforementioned elevator braking performance testing method, apparatus, computer equipment, storage medium, and computer program product acquire the relative displacement between the brake pressure plate and the brake ratchet of the elevator brake after braking of the target elevator; obtain the braking distance of the elevator brake based on the relative displacement; and use the braking distance of the elevator brake to test the braking performance of the target elevator. This application, by acquiring the relative displacement between the brake pressure plate and the brake ratchet of the elevator brake, can accurately test the braking performance of the target elevator. Attached Figure Description

[0032] Figure 1 This is a flowchart illustrating an elevator braking performance testing method in one embodiment;

[0033] Figure 2 This is a flowchart illustrating the process of obtaining the relative rotation angle in one embodiment;

[0034] Figure 3 This is a schematic diagram of the brake pressure plate and brake ratchet in one embodiment;

[0035] Figure 4 This is a schematic diagram of the process for obtaining the braking distance in one embodiment;

[0036] Figure 5 This is a structural block diagram of an elevator braking performance testing device in one embodiment;

[0037] Figure 6 This is an internal structural diagram of a computer device in one embodiment. Detailed Implementation

[0038] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0039] It should be noted that the terms "first" and "second" used in the embodiments of the present invention are merely to distinguish similar objects and do not represent a specific ordering of objects. It is understood that "first" and "second" can be interchanged in a specific order or sequence where permissible. It should be understood that the objects distinguished by "first" and "second" can be interchanged where appropriate so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein.

[0040] In one embodiment, such as Figure 1As shown, a method for detecting elevator braking performance is provided. In this embodiment, the method is applied to a terminal. It should be understood that the method can also be applied to a server, and can also be applied to a system including a terminal and a server, and can be implemented through the interaction of the terminal and the server. In this embodiment, the method includes the following steps:

[0041] In step S101, the relative displacement between the brake pressure plate of the elevator brake corresponding to the target elevator to be detected and the brake ratchet of the elevator brake after the target elevator is braked is obtained.

[0042] The target elevator to be detected can be an escalator, which has a main brake and an additional brake, and the elevator brake can be the additional brake of the target elevator. The braking performance of the target elevator is reflected in the braking performance of the elevator brake. The brake pressure plate, the brake ratchet, and the step chain wheel are all components on the elevator brake. The brake pressure plate, the brake ratchet, and the step chain wheel are three concentric circular components with different diameters. The brake pressure plate is in close contact with the brake ratchet, and there is a friction force between them. The brake pressure plate is used to brake by means of the friction force between the brake pressure plate and the brake ratchet. The brake ratchet has a groove. When the brake command is issued, the brake pawl of the elevator brake moves upward. At this time, the brake ratchet continues to rotate, and in fact, the brake has not started yet. When the pawl is inserted into the groove on the brake ratchet, the brake ratchet stops rotating. Then, the friction force between the brake pressure plate and the brake ratchet causes the brake pressure plate to stop rotating after a certain distance. Because the brake pressure plate and the step chain wheel are fixed together, and the step chain wheel is connected to the target elevator through a hinge, when the brake pressure plate stops, the step chain wheel and the target elevator also stop moving. Finally, the relative displacement refers to the relative friction distance between the brake ratchet and the brake pressure plate.

[0043] Specifically, when the target elevator is braked, the relative friction distance between the brake ratchet and the brake pressure plate is obtained. There are various ways to represent the friction distance. For example, before the target elevator is braked, a mark point is marked at the junction of the brake ratchet and the brake pressure plate. At this time, the mark point is the mark point of the brake ratchet and the mark point of the brake pressure plate. When the target elevator is braked, the two mark points are not in the same position. The arc distance between the two mark points is obtained, which is the relative friction distance between the brake ratchet and the brake pressure plate, i.e., the relative displacement.

[0044] In step S102, the braking distance of the elevator brake is obtained according to the relative displacement.

[0045] The brake distance is the relative displacement between the brake pressure plate and the brake ratchet of the elevator brake corresponding to the target elevator after the target elevator is braked, and the brake distance is the arc length of the rotation of the stepped chain wheel. The stepped chain wheel is connected to the elevator through a hinge, so the arc length of the rotation of the stepped chain wheel is not only the brake distance of the elevator brake, but also the brake distance of the target elevator.

[0046] Specifically, the diameter of the brake pressure plate and the diameter of the stepped chain wheel are obtained in advance, and the ratio of the diameter of the brake pressure plate to the diameter of the stepped chain wheel is further obtained. Based on the relative displacement, the brake distance of the elevator brake is obtained.

[0047] In step S103, the brake performance of the target elevator is detected by using the brake distance of the elevator brake.

[0048] The brake performance is the efficiency of the braking of the target elevator, which can be represented by the brake torque of the elevator brake corresponding to the target elevator.

[0049] Specifically, based on the brake distance of the elevator brake, the brake torque corresponding to the elevator brake is obtained, and finally the brake torque is used to detect the brake performance of the target elevator.

[0050] In the elevator brake performance detection method, the relative displacement between the brake pressure plate of the elevator brake corresponding to the target elevator and the brake ratchet of the elevator brake after the target elevator is braked is obtained, the brake distance of the elevator brake is obtained according to the relative displacement, and the brake performance of the target elevator is detected by using the brake distance of the elevator brake. By obtaining the relative displacement between the brake pressure plate and the brake ratchet of the elevator brake, the brake performance of the target elevator can be accurately detected.

[0051] In one embodiment, as shown in Figure 2 The relative displacement is the relative rotation angle between the brake pressure plate and the brake ratchet after the target elevator is braked. The relative displacement between the brake pressure plate of the elevator brake corresponding to the target elevator and the brake ratchet of the elevator brake after the target elevator is braked includes the following steps:

[0052] In step S201, after the target elevator is braked, the marker point distance between the pressure plate marker point of the brake pressure plate and the ratchet marker point of the brake ratchet is obtained. The pressure plate marker point and the ratchet marker point are in the same position before the target elevator is braked.

[0053] The relative rotation angle refers to a relative rotation angle between the brake pressure plate and the brake ratchet when the brake pressure plate and the brake ratchet are in friction with each other until the rotation stops. The pressure plate mark point is a mark point on the brake pressure plate at the junction with the brake ratchet, and the ratchet mark point is a mark point on the brake ratchet at the junction with the brake pressure plate. The pressure plate mark point and the ratchet mark point are in the same position before the target elevator brake. The final mark point distance is a straight line distance between the pressure plate mark point and the ratchet mark point.

[0054] Specifically, as shown in the figure, Figure 3 Before the target elevator brake, the elevator brake rotates counterclockwise. Point A is the overlapping position of the pressure plate mark point and the ratchet mark point before the target elevator brake. Point B is the ratchet mark point on the brake ratchet after the target elevator brake. Point C is the pressure plate mark point on the brake pressure plate after the target elevator brake. D is the radius of the brake pressure plate. Angle E is the relative rotation angle. L is the mark point distance between the pressure plate mark point and the ratchet mark point after the target elevator brake. First, the position coordinates of the ratchet mark point B are obtained, and then the position coordinates of the pressure plate mark point C are obtained. Based on the two position coordinates, the mark point distance L between the pressure plate mark point and the ratchet mark point can be calculated.

[0055] In step S202, the relative rotation angle is obtained based on the mark point distance.

[0056] Specifically, based on the mark point distance L between the pressure plate mark point and the ratchet mark point, the relative rotation angle angle E between the brake ratchet and the brake pressure plate can be further calculated by a trigonometric function formula.

[0057] In this embodiment, by obtaining the mark point distance between the pressure plate mark point of the brake pressure plate and the ratchet mark point of the brake ratchet after the target elevator brake, the relative rotation angle between the brake ratchet and the brake pressure plate can be accurately calculated.

[0058] In one embodiment, obtaining the relative rotation angle based on the mark point distance includes the following steps: obtaining the relative rotation angle between the brake pressure plate and the brake ratchet based on the mark point distance and a previously obtained pressure plate diameter of the brake pressure plate.

[0059] The pressure plate diameter is the diameter of the circular brake pressure plate.

[0060] Specifically, based on the mark point distance L between the pressure plate mark point and the ratchet mark point and the previously obtained pressure plate diameter of the brake pressure plate, that is, twice the pressure plate radius D, the relative rotation angle angle E between the brake ratchet and the brake pressure plate can be further calculated by a trigonometric function formula.

[0061] In the embodiment, the relative rotation angle between the brake pressing plate and the brake ratchet can be accurately obtained through the marker point distance and the pressing plate diameter of the brake pressing plate obtained in advance.

[0062] In one embodiment, as shown in Figure 4 obtaining the brake distance of the elevator brake according to the relative displacement comprises the following steps:

[0063] In step S401, the chain wheel circumference of the step chain wheel of the elevator brake is obtained.

[0064] The step chain wheel is a circular component of the elevator brake, is locked with the brake pressing plate through a bolt, and has the same center as the brake pressing plate. The step chain wheel is connected with the target elevator through a hinge. The chain wheel circumference refers to the circular circumference of the step chain wheel.

[0065] Specifically, the chain wheel circumference of the step chain wheel of the elevator brake is calculated through the diameter of the step chain wheel obtained in advance.

[0066] In step S402, the brake distance of the elevator brake is obtained according to the chain wheel circumference and the relative rotation angle.

[0067] Specifically, the ratio of the relative rotation angle to 360 degrees is calculated, and the product of the ratio and the chain wheel circumference is the arc distance rotated during the braking of the step chain wheel, that is, the brake distance of the elevator brake.

[0068] In the embodiment, the brake distance of the elevator brake can be accurately calculated through the chain wheel circumference and the relative rotation angle.

[0069] In one embodiment, the brake distance of the elevator brake is used to detect the braking performance of the target elevator, comprising the following steps:

[0070] Based on the brake distance of the elevator brake, the brake torque of the elevator brake is obtained. If the brake torque is greater than or equal to a preset torque threshold, it is determined that the braking performance detection result of the target elevator is passed. If the brake torque is less than the preset torque threshold, it is determined that the braking performance detection result of the target elevator is failed.

[0071] The brake torque is the torque generated by the elevator brake, and the preset torque threshold is a preset value.

[0072] Specifically, the braking torque of the elevator brake is calculated according to the braking distance of the elevator brake, and then the braking torque is compared with the preset torque threshold value. If the braking torque is greater than or equal to the preset torque threshold value, it is determined that the braking performance detection result of the target elevator is passed. On the contrary, if the braking torque is less than the preset torque threshold value, it is determined that the braking performance detection result of the target elevator is failed.

[0073] In the embodiment, the braking performance detection result of the target elevator can be accurately obtained by obtaining the braking torque of the elevator brake.

[0074] In one embodiment, the braking torque of the elevator brake is obtained based on the braking distance of the elevator brake, including the following steps: obtaining the braking time of the elevator brake for generating the braking distance; obtaining the braking deceleration of the elevator brake based on the braking time and the braking distance; and obtaining the braking torque of the elevator brake based on the braking deceleration.

[0075] The braking time is the time consumed in the braking process of the target elevator, and the braking deceleration is the average deceleration generated in the braking process of the elevator brake.

[0076] Specifically, the braking time of the elevator brake for generating the braking distance is obtained by the timer, and then the braking deceleration of the elevator brake is calculated based on the braking time and the braking distance, and then the braking torque of the elevator brake is further calculated.

[0077] In the embodiment, the braking torque of the elevator brake can be accurately calculated based on the braking time and the braking distance of the elevator brake.

[0078] In one embodiment, the number of braking distances is multiple, and each corresponds to a different braking distance acquisition round. The braking performance of the target elevator is detected by using the braking distance of the elevator brake, including the following steps:

[0079] The average value of the braking distances is obtained, and the braking performance of the target elevator is detected by using the average value of the braking distances.

[0080] The different braking distance acquisition rounds refer to multiple rounds of measurement and calculation, and multiple braking distances are obtained respectively.

[0081] Specifically, multiple relative displacement results between the brake pressing plate and the brake ratchet are obtained by multiple measurements, multiple braking distances are calculated based on the multiple relative displacement results, and finally the average value of the multiple braking distances is calculated as the braking distance of the elevator brake.

[0082] In this embodiment, through multiple rounds of measurement, multiple braking distances of the elevator brake are obtained, and finally the average of the multiple braking distances is calculated, so that the detection result of the braking performance of the target elevator is more accurate.

[0083] In one embodiment, an elevator braking performance detection method is provided, and the specific steps are as follows:

[0084] In one embodiment, an elevator braking performance detection method is provided, and the specific steps are as follows:

[0085] L = arcsin(L2 / D1) / 180°xπxD2;

[0086] Wherein D1 is the diameter of the brake pressure plate, D2 is the diameter of the additional elevator brake gear chain wheel, after obtaining the braking distance, the braking torque of the additional elevator brake is further calculated, and the above braking torque is used to detect the braking performance of the elevator.

[0087] In this embodiment, the intersection between the brake ratchet and the brake pressure plate is marked with a line, and the two marks are displaced when the additional brake acts, so that the accurate braking torque of the additional elevator brake is calculated by measuring the distance between the two marks, and the braking performance of the elevator can be accurately detected.

[0088] It should be understood that although each step in the flowchart involved in each of the above embodiments is displayed in sequence according to the arrow, these steps are not necessarily executed in sequence according to the arrow. Unless otherwise stated herein, the execution of these steps is not strictly limited in sequence, and these steps can be executed in other sequences. Moreover, at least part of the steps in the flowchart involved in each of the above embodiments can include multiple steps or stages, which are not necessarily executed at the same time, but can be executed at different times, and the execution sequence of these steps or stages is not necessarily sequential, but can be alternately executed with other steps or steps or stages in other steps.

[0089] Based on the same inventive concept, the embodiments of the present application also provide an elevator brake performance detection device for implementing the above-mentioned elevator brake performance detection method. The implementation scheme for solving the problem provided by the device is similar to the implementation scheme described in the above method, and therefore the specific limitations in one or more elevator brake performance detection device embodiments provided below can refer to the limitations of the elevator brake performance detection method described above, which will not be described here again.

[0090] In one embodiment, as shown in Figure 5 An elevator brake performance detection device is provided, comprising: a relative displacement obtaining module 501, a brake distance obtaining module 502, and a brake performance detection module 503, wherein:

[0091] The relative displacement obtaining module 501 is configured to obtain the relative displacement between the brake pressure plate of the elevator brake corresponding to the target elevator after the target elevator is braked and the brake ratchet of the elevator brake.

[0092] The brake distance obtaining module 502 is configured to obtain the brake distance of the elevator brake according to the relative displacement.

[0093] The brake performance detection module 503 is configured to detect the brake performance of the target elevator by using the brake distance of the elevator brake.

[0094] In one embodiment, the relative displacement obtaining module 501 is further configured to obtain a marker point distance between a pressure plate marker point of the brake pressure plate and a ratchet marker point of the brake ratchet after the target elevator is braked, the pressure plate marker point and the ratchet marker point being at the same position before the target elevator is braked, and obtain a relative rotation angle based on the marker point distance.

[0095] In one embodiment, the relative displacement obtaining module 501 is further configured to obtain the relative rotation angle between the brake pressure plate and the brake ratchet based on the marker point distance and a pressure plate diameter of the brake pressure plate obtained in advance.

[0096] In one embodiment, the brake distance obtaining module 502 is further configured to obtain a chain wheel circumference of a step chain wheel of the elevator brake, and obtain the brake distance of the elevator brake according to the chain wheel circumference and the relative rotation angle.

[0097] In one embodiment, the brake performance detection module 503 is further configured to obtain a brake torque of the elevator brake based on the brake distance of the elevator brake, determine that the brake performance detection result of the target elevator is passed if the brake torque is greater than or equal to a preset torque threshold, and determine that the brake performance detection result of the target elevator is not passed if the brake torque is less than the preset torque threshold.

[0098] In one embodiment, the braking performance detection module 503 is further configured to obtain the braking time during which the elevator brake generates a braking distance; based on the braking time and the braking distance, obtain the braking deceleration of the elevator brake; and based on the braking deceleration, obtain the braking torque of the elevator brake.

[0099] In one embodiment, the braking performance detection module 503 is further used to obtain the average value of each braking distance, and to detect the braking performance of the target elevator using the average value of the braking distance.

[0100] Each module in the aforementioned elevator braking performance testing device can be implemented entirely or partially through software, hardware, or a combination thereof. These modules can be embedded in or independent of the processor in a computer device, or stored in the computer device's memory as software, so that the processor can call and execute the corresponding operations of each module.

[0101] In one embodiment, a computer device is provided, which may be a terminal, and its internal structure diagram may be as follows: Figure 6 As shown, the computer device includes a processor, memory, communication interface, display screen, and input devices connected via a system bus. The processor provides computing and control capabilities. The memory includes non-volatile storage media and internal memory. The non-volatile storage media stores the operating system and computer programs. The internal memory provides an environment for the operation of the operating system and computer programs stored in the non-volatile storage media. The communication interface is used for wired or wireless communication with external terminals; wireless communication can be achieved through Wi-Fi, mobile cellular networks, NFC (Near Field Communication), or other technologies. When the computer program is executed by the processor, it implements a method for detecting elevator braking performance. The display screen can be an LCD screen or an e-ink screen. The input devices can be a touch layer covering the display screen, buttons, a trackball, or a touchpad on the computer device's casing, or an external keyboard, touchpad, or mouse.

[0102] Those skilled in the art will understand that Figure 6 The structure shown is merely a block diagram of a portion of the structure related to the present application and does not constitute a limitation on the computer device to which the present application is applied. Specific computer devices may include more or fewer components than those shown in the figure, or combine certain components, or have different component arrangements.

[0103] In one embodiment, a computer device is provided, including a memory and a processor, wherein the memory stores a computer program, and the processor executes the computer program to perform the following steps:

[0104] obtaining a relative displacement between the brake pressure plate of the elevator brake corresponding to the target elevator and the brake ratchet of the elevator brake after the target elevator is braked;

[0105] obtaining a brake distance of the elevator brake according to the relative displacement;

[0106] detecting the brake performance of the target elevator by using the brake distance of the elevator brake.

[0107] In one embodiment, the processor further implements the following steps when executing the computer program: obtaining a marker point distance between a pressure plate marker point of the brake pressure plate and a ratchet marker point of the brake ratchet after the target elevator is braked; the pressure plate marker point and the ratchet marker point are at the same position before the target elevator is braked; obtaining a relative rotation angle based on the marker point distance.

[0108] In one embodiment, the processor further implements the following steps when executing the computer program: obtaining a relative rotation angle between the brake pressure plate and the brake ratchet based on the marker point distance and a pressure plate diameter of the brake pressure plate obtained in advance.

[0109] In one embodiment, the processor further implements the following steps when executing the computer program: obtaining a sprocket circumference of a sprocket chain wheel of the elevator brake; obtaining the brake distance of the elevator brake according to the sprocket circumference and the relative rotation angle.

[0110] In one embodiment, the processor further implements the following steps when executing the computer program: obtaining a brake torque of the elevator brake based on the brake distance of the elevator brake; if the brake torque is greater than or equal to a preset torque threshold, determining that the brake performance detection result of the target elevator is a detection pass; if the brake torque is less than the preset torque threshold, determining that the brake performance detection result of the target elevator is a detection fail.

[0111] In one embodiment, the processor further implements the following steps when executing the computer program: obtaining a brake time for the elevator brake to generate the brake distance; obtaining a brake deceleration of the elevator brake based on the brake time and the brake distance; obtaining the brake torque of the elevator brake based on the brake deceleration.

[0112] In one embodiment, the processor further implements the following steps when executing the computer program: obtaining an average value of the brake distances; and detecting the brake performance of the target elevator by using the average value of the brake distances.

[0113] In one embodiment, a computer readable storage medium is provided, and the computer readable storage medium stores a computer program. The computer program is executed by a processor to implement the following steps:

[0114] obtaining a relative displacement between the brake pressure plate and the brake ratchet of the elevator brake corresponding to the target elevator after the target elevator is braked;

[0115] obtaining a brake distance of the elevator brake according to the relative displacement;

[0116] detecting the brake performance of the target elevator by using the brake distance of the elevator brake.

[0117] In one embodiment, the processor, when executing the computer program, further implements the following steps: obtaining a marker point distance between a pressure plate marker point of the brake pressure plate and a ratchet marker point of the brake ratchet before the target elevator is braked; the pressure plate marker point and the ratchet marker point are at the same position before the target elevator is braked; obtaining a relative rotation angle based on the marker point distance.

[0118] In one embodiment, the processor, when executing the computer program, further implements the following steps: obtaining a relative rotation angle between the brake pressure plate and the brake ratchet based on the marker point distance and a previously obtained pressure plate diameter of the brake pressure plate.

[0119] In one embodiment, the processor, when executing the computer program, further implements the following steps: obtaining a sprocket circumference of a sprocket chain wheel of the elevator brake; obtaining the brake distance of the elevator brake according to the sprocket circumference and the relative rotation angle.

[0120] In one embodiment, the processor, when executing the computer program, further implements the following steps: obtaining a brake torque of the elevator brake based on the brake distance of the elevator brake; if the brake torque is greater than or equal to a preset torque threshold, determining that the brake performance detection result of the target elevator is a detection pass; if the brake torque is less than the preset torque threshold, determining that the brake performance detection result of the target elevator is a detection fail.

[0121] In one embodiment, the processor, when executing the computer program, further implements the following steps: obtaining a brake time for the elevator brake to generate the brake distance; obtaining a brake deceleration of the elevator brake based on the brake time and the brake distance; obtaining the brake torque of the elevator brake based on the brake deceleration.

[0122] In one embodiment, the processor, when executing the computer program, further implements the following steps: obtaining an average value of the brake distances; and detecting the brake performance of the target elevator by using the average value of the brake distances.

[0123] In one embodiment, a computer program product is provided, comprising a computer program which, when executed by a processor, implements the following steps:

[0124] obtaining a relative displacement between the brake pressure plate and the brake ratchet of the elevator brake corresponding to the target elevator after the target elevator is braked;

[0125] obtaining a brake distance of the elevator brake according to the relative displacement;

[0126] detecting the brake performance of the target elevator by using the brake distance of the elevator brake.

[0127] In an embodiment, the processor, when executing the computer program, further implements the following steps: obtaining a marker point distance between a pressure plate marker point of the brake pressure plate and a ratchet marker point of the brake ratchet before the target elevator is braked; the pressure plate marker point and the ratchet marker point are at the same position before the target elevator is braked; and obtaining a relative rotation angle based on the marker point distance.

[0128] In an embodiment, the processor, when executing the computer program, further implements the following steps: obtaining a relative rotation angle between the brake pressure plate and the brake ratchet based on the marker point distance and a previously obtained pressure plate diameter of the brake pressure plate.

[0129] In an embodiment, the processor, when executing the computer program, further implements the following steps: obtaining a sprocket circumference of a sprocket chain wheel of the elevator brake; and obtaining the brake distance of the elevator brake according to the sprocket circumference and the relative rotation angle.

[0130] In an embodiment, the processor, when executing the computer program, further implements the following steps: obtaining a brake torque of the elevator brake based on the brake distance of the elevator brake; determining that the brake performance detection result of the target elevator is passed if the brake torque is greater than or equal to a preset torque threshold; and determining that the brake performance detection result of the target elevator is not passed if the brake torque is less than the preset torque threshold.

[0131] In an embodiment, the processor, when executing the computer program, further implements the following steps: obtaining a brake time for the elevator brake to generate the brake distance; obtaining a brake deceleration of the elevator brake based on the brake time and the brake distance; and obtaining the brake torque of the elevator brake based on the brake deceleration.

[0132] In an embodiment, the processor, when executing the computer program, further implements the following steps: obtaining an average value of the brake distances; and detecting the brake performance of the target elevator by using the average value of the brake distances.

[0133] It should be noted that the user information (including but not limited to user equipment information, user personal information, etc.) and data (including but not limited to data for analysis, stored data, displayed data, etc.) involved in the present application are all information and data authorized by the user or authorized by all parties.

[0134] Those skilled in the art can understand that all or part of the processes in the above-mentioned embodiment methods can be completed by instructing the relevant hardware through a computer program. The computer program can be stored in a non-volatile computer readable storage medium, and when executed, can include the processes of the above-mentioned embodiment methods. Any reference to memory, database or other medium used in the embodiments provided in the present application can include at least one of non-volatile and volatile memory. Non-volatile memory can include read-only memory (ROM), magnetic tape, floppy disk, flash memory, optical storage, high-density embedded non-volatile memory, resistive memory (ReRAM), magnetoresistive random access memory (MRAM), ferroelectric memory (FRAM), phase change memory (PCM), graphene memory, etc. Volatile memory can include random access memory (RAM) or external cache memory, etc. As an illustration but not limitation, RAM can be in various forms, such as static random access memory (SRAM) or dynamic random access memory (DRAM), etc. The database involved in the embodiments provided in the present application can include at least one of a relational database and a non-relational database. The non-relational database can include a distributed database based on a block chain, etc., without being limited thereto. The processor involved in the embodiments provided in the present application can be a general-purpose processor, a central processing unit, a graphics processing unit, a digital signal processor, a programmable logic device, a data processing logic device based on quantum computing, etc., without being limited thereto.

[0135] Any combination of the technical features of the above embodiments can be made. In order to make the description simple, all possible combinations of the technical features in the above embodiments are not described, however, as long as the combination of the technical features does not exist, it should be considered as the scope of the present application.

[0136] The above embodiments only express several implementation manners of the present application, and the description is more specific and detailed, but it should not be understood as a limitation on the scope of the patent of the present application. It should be pointed out that for ordinary skilled in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which are within the scope of protection of the present application. Therefore, the protection scope of the present application should be subject to the appended claims.

Claims

1. A method for detecting brake performance of an elevator, characterized by, The method comprises: obtaining the relative displacement between the brake pressure plate of the elevator brake corresponding to the target elevator and the brake ratchet of the elevator brake after the target elevator is braked; obtaining the brake distance of the elevator brake according to the relative displacement; detecting the brake performance of the target elevator by using the brake distance of the elevator brake; the relative displacement is the relative rotation angle between the brake pressure plate and the brake ratchet after the target elevator is braked; the obtaining of the relative displacement between the brake pressure plate of the elevator brake corresponding to the target elevator and the brake ratchet of the elevator brake after the target elevator is braked comprises: after the target elevator is braked, obtaining the marker point distance between the pressure plate marker point of the brake pressure plate and the ratchet marker point of the brake ratchet; the pressure plate marker point and the ratchet marker point are at the same position before the target elevator is braked; obtaining the relative rotation angle based on the marker point distance.

2. The method of claim 1, wherein, the obtaining of the relative rotation angle based on the marker point distance comprises: obtaining the relative rotation angle between the brake pressure plate and the brake ratchet based on the marker point distance and the pressure plate diameter of the brake pressure plate obtained in advance.

3. The method of claim 2, wherein, the obtaining of the brake distance of the elevator brake according to the relative displacement comprises: obtaining the chain wheel circumference of the step chain wheel of the elevator brake; obtaining the brake distance of the elevator brake according to the chain wheel circumference and the relative rotation angle.

4. The method according to any one of claims 1 to 3, characterized in that, the detection of the brake performance of the target elevator by using the brake distance of the elevator brake comprises: obtaining the brake torque of the elevator brake based on the brake distance of the elevator brake; if the brake torque is greater than or equal to a preset torque threshold, determining that the brake performance detection result of the target elevator is detection pass; if the brake torque is less than the preset torque threshold, determining that the brake performance detection result of the target elevator is detection fail.

5. The method of claim 4, wherein, the obtaining of the brake torque of the elevator brake based on the brake distance of the elevator brake comprises: obtaining the brake time of the elevator brake for generating the brake distance; obtaining the brake deceleration of the elevator brake based on the brake time and the brake distance; obtaining the brake torque of the elevator brake based on the brake deceleration.

6. The method of claim 1, wherein, the brake distance has a plurality of quantities, and each quantity corresponds to a different brake distance acquisition round; the detection of the brake performance of the target elevator by using the brake distance of the elevator brake comprises: obtaining the average value of each brake distance, and detecting the brake performance of the target elevator by using the average value of the brake distance.

7. An elevator braking performance testing device, characterized in that, The device comprises: a relative displacement obtaining module, configured to obtain the relative displacement between the brake pressure plate of the elevator brake corresponding to the target elevator and the brake ratchet of the elevator brake after the target elevator is braked; a brake distance obtaining module, configured to obtain the brake distance of the elevator brake according to the relative displacement; The brake performance detection module is configured to detect brake performance of the target elevator by using a braking distance of the elevator brake. The relative displacement is a relative rotation angle between the brake pressure plate and the brake ratchet after the target elevator is braked. The relative displacement acquisition module is further configured to acquire a mark point distance between a pressure plate mark point of the brake pressure plate and a ratchet mark point of the brake ratchet after the target elevator is braked, the pressure plate mark point and the ratchet mark point being at the same position before the target elevator is braked, and the relative rotation angle being obtained based on the mark point distance. 8.A computer device, comprising a memory and a processor, wherein the memory stores a computer program, and the computer device is configured to perform the method according to any one of claims 1-7. The processor, when executing the computer program, implements the steps of the method of any one of claims 1 to 6.

9. A computer readable storage medium having stored thereon a computer program, characterized in that, The computer program, when executed by the processor, implements the steps of the method of any one of claims 1 to 6.

10. A computer program product comprising a computer program, characterized in that, The computer program, when executed by the processor, implements the steps of the method of any one of claims 1 to 6.

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