Elevator running speed control system and control method

Abstract

The elevator running speed control system comprises a speed detection module and a height detection module, the speed detection module is used for obtaining the real-time running speed of an elevator, and the height detection module is used for obtaining the real-time running height of the elevator; the control system further comprises a standard data generation module, a real-time data generation module and a comparison control module. The standard data generation module is used for generating a plurality of standard speed distribution curves of elevator operation. The real-time data generation module is used for generating a plurality of real-time state parameters, the comparison control module generates an actual speed distribution curve, the actual speed distribution curve is compared with a standard speed distribution curve, and an elevator speed control instruction is generated; by detecting the air pressure in the elevator shaft, the running speed of the elevator is collected in real time, the real-time speed is compared with the standard speed to quickly determine whether the real-time speed of the elevator is within the normal range or not, the corresponding control instruction is output, and the speed control precision is improved.

Description

Technical Field

[0001] The present application relates to the technical field of elevator equipment, and in particular to an elevator running speed control system and control method. Background Art

[0002] Elevators are widely used as necessary means of transporting people in high-rise buildings. In the prior art, in order to better control the operation of elevators, speed monitoring devices are generally provided. The speed monitoring devices generally choose to set multiple position transponders or photoelectric sensors in the elevator shaft, and calculate the speed of the elevator by calibrating the elevator position and running time. However, the above speed monitoring method has a certain lag, which is not conducive to real-time control of the elevator's running speed, and the above parameters are generally average values, which is not conducive to improving the control accuracy of the elevator's running speed. Summary of the invention

[0003] The main purpose of the present application is to provide an elevator running speed control system and a control method, aiming to solve the defect of poor speed control accuracy existing in the prior art.

[0004] This application achieves the above objectives through the following technical solutions:

[0005] An elevator running speed control system, comprising:

[0006] Speed ​​detection module, used to obtain the real-time speed V of the elevator n ; Where n represents the number compiled according to the order of acquisition;

[0007] Height detection module, used to obtain the real-time height H of the elevator n ; Where n represents the number compiled according to the order of acquisition;

[0008] A standard data generation module, used to generate several standard speed distribution curves of the elevator operation according to the floors to be stopped;

[0009] A real-time data generation module is used to generate several real-time state parameters of the elevator operation according to the real-time speed and real-time height. n 、V n};

[0010] The comparison control module is used to generate an actual speed distribution curve according to each of the real-time state parameters, compare the actual speed distribution curve with the standard speed distribution curve, and generate an elevator speed control instruction.

[0011] Optionally, the speed detection module includes a detection box, which is provided with an elastic diaphragm and a static pressure tube, one end of the static pressure tube is connected to the detection box, and the other end thereof is connected to the car; the detection box is also provided with a distance detection module for measuring the deformation of the elastic diaphragm.

[0012] Optionally, a sealing cover is threadedly connected to the detection box, and a ventilation hole is arranged on the sealing cover. The elastic diaphragm is arranged on the sealing cover, and the elastic diaphragm is arranged opposite to the ventilation hole; a limiting plate is threadedly connected inside the sealing cover and fits tightly with the elastic diaphragm.

[0013] Optionally, the elastic diaphragm comprises a detection plate, an annular corrugated plate and a mounting plate, and along the radial direction of the elastic diaphragm, the detection plate, the annular corrugated plate and the mounting plate are coaxially connected in sequence;

[0014] Optionally, the detection plate, the annular corrugated plate and the mounting plate are all rubber plates or silicone plates, and a reinforcing mesh is embedded in the annular corrugated plate; and a reinforcing plate is embedded in the mounting plate.

[0015] Accordingly, the present application also discloses a control method based on the above control system, comprising the following steps:

[0016] Get the real-time speed V of the elevator n ; Where n represents the number compiled according to the order of acquisition;

[0017] Get the real-time height H of the elevator n ; Where n represents the number compiled according to the order of acquisition;

[0018] Generate several standard speed distribution curves of the elevator operation according to the floors to be stopped;

[0019] Generate several real-time state parameters of the elevator operation according to the real-time speed and real-time height {H n 、V n};

[0020] An actual speed distribution curve is generated according to each of the real-time state parameters, and the actual speed distribution curve is compared with the standard speed distribution curve to generate an elevator speed control instruction.

[0021] Optionally, generating a plurality of standard speed distribution curves of the elevator operation according to the floors to be stopped includes the following steps:

[0022] Get the parameters of all floors to be stopped by the elevator;

[0023] Calculate the number of floors to be operated between any two adjacent floors to be stopped according to the parameters of each floor to be stopped;

[0024] According to the number of layers to be operated, several standard velocity distribution curves are retrieved from the database respectively;

[0025] The standard speed distribution curves are arranged in sequence according to the order in which the elevators stop.

[0026] Optionally, generating an actual speed distribution curve according to each of the real-time state parameters, comparing the actual speed distribution curve with the standard speed distribution curve, and generating an elevator speed control instruction comprises the following steps:

[0027] generating a comparison coordinate system, wherein the horizontal axis of the comparison coordinate system represents the height, and the vertical axis represents the speed;

[0028] Selecting a standard comparison speed distribution curve from each of the standard speed distribution curves according to the current stop floor parameter of the elevator, and importing the standard comparison speed distribution curve into the comparison coordinate system;

[0029] Selecting comparison points in the comparison coordinate system according to the acquired real-time state parameters, and generating an actual speed distribution curve by fitting the comparison points;

[0030] Setting the deviation redundancy, and generating an upper deviation curve and a lower deviation curve by combining the standard comparison speed distribution curve and the deviation redundancy;

[0031] An elevator speed control instruction is generated according to the position of the actual speed distribution curve relative to the upper deviation curve and the lower deviation curve.

[0032] Optionally, setting the deviation redundancy, combining the standard comparison speed distribution curve and the deviation redundancy to generate an upper deviation curve and a lower deviation curve, comprises the following steps:

[0033] Set the upper and lower speed deviation values ​​according to actual needs;

[0034] Obtaining a comparison coordinate system with a standard comparison velocity distribution curve;

[0035] The standard comparison speed distribution curve is shifted upward according to the speed upper deviation value to calibrate the upper deviation curve;

[0036] The standard comparison speed distribution curve is shifted downward according to the speed lower deviation value to calibrate the lower deviation curve.

[0037] Optionally, generating an elevator speed control instruction according to the position of the actual speed distribution curve relative to the upper deviation curve and the lower deviation curve comprises the following steps:

[0038] If the actual speed distribution curve is between the upper deviation curve and the lower deviation curve, it is determined that the elevator running speed is normal;

[0039] If the speed deviation curve is located above the upper deviation curve, the elevator is judged to be overspeeding and a deceleration control command is output;

[0040] If the speed deviation curve is located below the lower deviation curve, it is determined that the elevator speed does not meet the standard and an acceleration control instruction is output.

[0041] Compared with the prior art, this application has the following beneficial effects:

[0042] The present application includes a speed detection module and a height detection module, wherein the speed detection module is used to obtain the real-time speed of the elevator, and the height detection module is used to obtain the real-time height of the elevator; the control system also includes a standard data generation module, a real-time data generation module and a comparison control module, wherein the standard data generation module is used to generate several standard speed distribution curves of the elevator according to the floor to be stopped; the real-time data generation module is used to generate several real-time state parameters of the elevator according to the real-time speed and real-time height, and the comparison control module is used to generate an actual speed distribution curve according to each of the real-time state parameters, compare the actual speed distribution curve with the standard speed distribution curve, and generate an elevator speed control instruction;

[0043] In actual use, the speed detection module is set on the top of the elevator car, and it is necessary to ensure that the speed detection module is not affected by the chaotic airflow caused by the auxiliary equipment on the top of the car during operation;

[0044] When the elevator car moves upward, the elevator shaft space on the top of the car is in a state of continuous shrinkage. Conversely, when the elevator moves downward, the elevator shaft space on the top of the car is in a state of continuous expansion. Since the elevator shaft is in a closed state, the elevator shaft on the top of the car is in a process of exhausting air outwards during the ascending process, and when descending, the elevator shaft on the top of the car is in a state of suction. In the exhaust state, the air pressure force applied to the speed detection module is pressure, and its magnitude is positively correlated with the speed of the elevator; in the exhaust state, the air pressure force applied to the speed detection module is tension, and its magnitude is positively correlated with the speed of the elevator. Therefore, by measuring the change in the volume of the speed detection module, the running speed of the elevator can be monitored in real time, that is, the real-time speed of the elevator can be obtained;

[0045] Compared with the prior art, the present application realizes the real-time collection of the elevator running speed by detecting the air pressure in the elevator shaft, compares the real-time speed with the standard speed to quickly determine whether the real-time speed of the elevator is within the normal range, and outputs the corresponding control instructions to realize the real-time control of the elevator running speed, avoiding the defect of poor speed control accuracy caused by the lag of speed parameters;

[0046] Secondly, the speed control system of the present application has a simple structure, which not only reduces the equipment cost, but also helps to improve the reliability and stability of the entire device. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] Figure 1 A schematic diagram of the structure of an elevator speed control system provided in Embodiment 1 of the present application;

[0048] Figure 2 This is the exploded diagram of the speed detection module;

[0049] Figure 3 is a cross-sectional view of a speed detection module;

[0050] Figure 4 is a cross-sectional view of the elastic diaphragm;

[0051] Figure 5 It is the structural diagram of the controller;

[0052] Figure 6 A flow chart of a control method provided in Embodiment 2 of the present application;

[0053] Figure 7 This is the comparison principle diagram of the actual speed distribution curve of the elevator;

[0054] Figure markings: 1-detection box, 2-elastic diaphragm, 3-static pressure tube, 4-distance detection module, 5-sealing cover, 6-ventilation hole, 7-limiting plate, 8-controller, 9-height detection module, 201-detection plate, 202-annular corrugated plate, 203-mounting plate, 204-reinforced mesh, 205-strengthening plate.

[0055] The purpose, features and advantages of this application will be further described in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0056] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0057] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0058] In the present invention, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0059] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the meaning of "and / or" appearing in the full text includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme that satisfies both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in the field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0060] Implementation Method 1

[0061] Reference Figures 1 to 5 This embodiment is an optional embodiment of the present application, which discloses an elevator running speed control system, including a speed detection module, the speed detection module includes a detection box 1, the detection box 1 is a closed cylindrical structure, a detection cavity is arranged therein, along the axis direction of the detection cavity, the top of the detection box 1 is a completely open structure, and a mounting hole is arranged at the bottom; a mounting frame is also arranged on the outer peripheral surface of the detection box 1 to facilitate the installation of the entire speed detection module;

[0062] Secondly, the mounting frame can also raise the position of the entire speed detection module. Since a large number of devices are installed on the top of the elevator car, the above-mentioned devices will generate a large amount of turbulence during the operation of the elevator car, interfering with the detection accuracy. By increasing the height of the speed detection module, the interference of the above-mentioned turbulence can be avoided and the detection accuracy can be improved.

[0063] A sealing cover 5 is also threadedly connected to the top of the detection box 1. The cross section of the sealing cover 5 is a U-shaped structure, and a ventilation hole 6 coaxial with the sealing cover 5 is also provided on the sealing cover 5; along the axial direction of the sealing cover 5, the side of the sealing cover 5 opposite to the detection box 1 is defined as the inner side, and the other side is defined as the outer side. An elastic diaphragm 2 and a limiting plate 7 are also sequentially provided on the inner side of the sealing cover 5, wherein the limiting plate 7 is threadedly connected to the sealing cover 5, and the limiting plate 7 is a circular ring structure, and its top surface is tightly fitted with the edge of the elastic diaphragm 2, so as to fix the elastic module in the sealing cover 5;

[0064] A static pressure pipe 3 is also inserted into the installation hole, and the other end of the static pressure pipe 3 is inserted into the elevator car, thereby connecting the elevator car with the detection cavity;

[0065] The equipment of the sealing cover 5 and the static pressure pipe 3 ensures that the detection box 1 is only connected to the elevator car, that is, the air pressure in the detection box 1 is the same as that in the elevator car;

[0066] If the detection box 1 is in a completely closed state, the air pressure in the detection box 1 will continue to increase as the elastic diaphragm 2 is compressed, and the deformation of the elastic diaphragm 2 will continue to decrease, and even become difficult to detect. Therefore, the balance of the air pressure through the static pressure tube 3 can effectively ensure the detection accuracy;

[0067] Further, the elastic diaphragm 2 includes a detection plate 201, an annular corrugated plate 202 and a mounting plate 203. Along the radial direction of the elastic diaphragm 2, the detection plate 201, the annular corrugated plate 202 and the mounting plate 203 are coaxially connected in sequence; that is, the detection plate 201 is a circular flat plate structure, the outer side of the detection plate 201 is sleeved with an annular corrugated plate 202, the annular corrugated plate 202 is provided with at least one set of complete crests and troughs, and the outer side of the annular corrugated plate 202 is sleeved with a mounting plate 203, the mounting plate 203 is an annular flat plate structure, the detection plate 201, the annular corrugated plate 202 and the mounting plate 203 are connected smoothly in one piece; the detection plate 201, the annular corrugated plate 202 and the mounting plate 203 are all highly elastic rubber plates or silicone plates;

[0068] The annular corrugated plate 202 can effectively enhance the elasticity of the elastic diaphragm 2, thereby ensuring that the detection plate 201 can rebound and reset in time, which is beneficial to improving the service life of the elastic diaphragm 2 and the detection accuracy of the equipment;

[0069] Furthermore, a reinforcing net 204 is embedded in the annular corrugated plate 202; a reinforcing plate 205 is embedded in the mounting plate 203. The reinforcing net and the reinforcing plate 205 can effectively improve the structural strength of the annular corrugated plate 202 and the mounting plate 203, on the one hand, prolonging the service life of the elastic diaphragm 2; on the other hand, the reinforcing net can enhance the elasticity of the annular corrugated plate 202, ensuring that the elastic diaphragm 2 can rebound in time;

[0070] Furthermore, a device hole is provided at the bottom of the detection box 1, and a distance detection module 4 is provided in the device hole. The distance detection module 4 is preferably a laser distance measurement sensor;

[0071] Furthermore, the control system further comprises a height detection module, and the height detection module is preferably an elevator height detector in the prior art or other device capable of detecting the elevator height in real time;

[0072] The control system further includes a controller 8, the data entry end of the controller 8 is electrically connected to the distance detection module 4 and the height detection module respectively; the controller 8 further includes a standard data generation module, a real-time data generation model and a comparison control module, wherein the data entry end of the standard data generation module is connected to a database of elevator control, wherein a plurality of standard speed distribution curves are stored in the database, and each standard speed distribution curve is selected from a plurality of parameters actually tested by the elevator;

[0073] The input end of the real-time data generation module is respectively connected to the height detection module and the distance detection module 4 to generate several real-time state parameters of the elevator operation according to the real-time speed and real-time height;

[0074] The data output ends of the real-time data generation module and the standard data generation module are respectively connected to the comparison control module, and the comparison control module generates an actual speed distribution curve according to each of the real-time state parameters, compares the actual speed distribution curve with the standard speed distribution curve, and generates an elevator speed control instruction;

[0075] In actual use, the speed detection module is placed on the top or bottom of the car, and it is necessary to ensure that the speed detection module is not affected by the turbulence generated by the external equipment of the car;

[0076] During the operation of the elevator, the elevator doors on different floors are in a closed state, so the elevator shaft is in a relatively closed state. Therefore, when the elevator car moves upward, the elevator shaft space on the top of the car is in a state of continuous shrinkage. Conversely, when the elevator moves downward, the elevator shaft space on the top of the car is in a state of continuous expansion. Since the elevator shaft is in a closed state, during the ascent, the elevator shaft on the top of the car is in a process of exhausting air outwards, and when descending, the elevator shaft on the top of the car is in a state of suction. In the exhaust state, the air pressure force applied to the speed detection module is pressure, and its magnitude is positively correlated with the speed of the elevator; in the exhaust state, the air pressure force applied to the speed detection module is tension, and its magnitude is positively correlated with the speed of the elevator, that is, the piston effect of the elevator will cause the pressure received by the elastic diaphragm 2 to be in a constantly changing state;

[0077] Specifically, if the speed detection module is set on the top of the elevator car, and the distance parameter detected by the laser ranging sensor in a static state is used as a reference, during the elevator ascending process, the air will squeeze the elastic diaphragm 2 inward, and the distance parameter detected by the laser ranging sensor will decrease, and as the speed increases, the above distance parameter will further decrease; conversely, during the elevator descending process, the negative pressure will pull the elastic diaphragm 2 outward, and the distance parameter detected by the laser ranging sensor will increase; and as the air pressure changes, the above parameters will change in real time, and because the elastic diaphragm 2 is always under the influence of air pressure, real-time detection of the elevator running speed can be achieved;

[0078] It should be pointed out that the elastic diaphragm 2 made of different materials will have different deformation capabilities, so it is necessary to first conduct quantitative testing in engineering applications, that is, to establish and update the corresponding calculation model by testing the relationship between the change amount of the elastic diaphragm 2 and the speed under different standard speeds, and reversely calculate the speed through the above calculation model in actual application; at the same time, it is also necessary to regularly update the above calculation model to ensure the accuracy of the test;

[0079] The entire detection device has a simple structure and has high stability and reliability.

[0080] Finally, it should be pointed out that the present application reduces the requirements for the speed detection device through air pressure conversion, that is, there is no need to arrange a speed sensor with a large detection range (the measurement range changes according to the change of floors), and the above function can be achieved through an ordinary laser ranging sensor, thereby reducing the cost of the entire set of equipment.

[0081] Implementation Method 2

[0082] Reference Figure 6 and Figure 7As another optional embodiment of the present application, this embodiment discloses a method for controlling the running speed of an elevator, comprising the following steps:

[0083] S1. Get the real-time speed V of the elevator n ; Where n represents the number compiled according to the order of acquisition;

[0084] During the operation of the elevator, the real-time speed V of the elevator is continuously obtained. n , and then assign a unique code n to it according to the time when the data is received;

[0085] S2. Get the real-time height H of the elevator n ; Where n represents the number compiled according to the order of acquisition;

[0086] During the operation of the elevator, the real-time height H of the elevator is continuously obtained. n , and then assign a unique code n to it according to the time when the data is received;

[0087] S3, generating several standard speed distribution curves of the elevator operation according to the floors to be stopped;

[0088] S31. Obtaining parameters of all floors to be stopped by the elevator;

[0089] After all passengers get on the elevator and press the floor button, the detailed parameters of all floors to be stopped are obtained, such as stopping at the 3rd, 4th, 6th, 9th, and 13th floors;

[0090] S32, calculating the number of floors to be operated between any two adjacent floors to be stopped according to the parameters of each floor to be stopped;

[0091] If you need to stop at the 3rd, 4th, 6th, 9th, and 13th floors, the 3rd and 4th floors are adjacent floors, and the number of floors to be operated between the two stopping floors is 1. Similarly, the number of floors to be stopped from the 4th to the 6th floors is two, and the other operating floors are calculated as 3 and 4 respectively; at the same time, if you run from the 1st floor to the 1st floor, the number of floors to be operated is two;

[0092] S33, respectively retrieve several standard velocity distribution curves from the database according to the number of floors to be operated;

[0093] The database pre-stores the standard speed distribution curves for all floors to be operated. For example, for an 18-story building, the floors to be operated are 1, 2, 3, ..., 17; that is, the floors from 1st floor to 2nd floor are 1 floor, the floors from 1st floor to 3rd floor are 2 floors, and the floors from 1st floor to 18th floor are 17 floors.

[0094] There are 17 standard velocity distribution curves pre-stored in the database;

[0095] It should be noted that the standard speed distribution curve is selected by engineers after multiple tests, and the best operating speed is selected from the test data as the standard speed distribution curve;

[0096] S34. Arrange the standard speed distribution curves in sequence according to the order in which the elevators stop.

[0097] Taking the number of floors to be operated calculated in step S32 as an example, the number of floors to be operated is 2, 1, 2, 3, and 4; the corresponding standard speed distribution curves are retrieved from the database recorded in step S33 respectively;

[0098] It should also be pointed out that the standard speed distribution curves to be retrieved or adjusted need to be arranged in sequence according to the operating floors of the elevator. For example, the operating floor from the 1st floor to the 3rd floor is 2, so the standard speed distribution curve for the two operating floors is ranked first and numbered, and the remaining standard speed distribution curves can be arranged according to the same principle;

[0099] S4, generating a real-time state parameter {H} of the elevator operation according to the real-time speed and real-time height n 、V n};

[0100] Since the real-time speed and real-time altitude are both encoded according to time, when the encoding is the same, the sampling time of the real-time speed and the real-time altitude is the same, and the real-time speed and real-time altitude with the same number are grouped into the same set, thus forming the real-time state parameter {H n 、V n};

[0101] S5. Generate an actual speed distribution curve according to each of the real-time state parameters, compare the actual speed distribution curve with the standard speed distribution curve, and generate an elevator speed control instruction.

[0102] S51, generating a comparison coordinate system, wherein the horizontal axis of the comparison coordinate system represents height, and the vertical axis represents speed;

[0103] S52, selecting a standard comparison speed distribution curve from each of the standard speed distribution curves according to the current stop floor parameter of the elevator, and importing the standard comparison speed distribution curve into the comparison coordinate system;

[0104] Taking the floor in step S31 as an example, if the elevator currently stops at the 1st floor, a standard speed distribution curve with two operating floors is retrieved as a standard comparison speed distribution curve, and the standard comparison speed distribution curve is imported into the comparison coordinate system;

[0105] It should be pointed out that when the elevator stops at the floor to be stopped, it is necessary to re-acquire the standard comparison speed distribution curve according to the stop floor and update the comparison coordinate system; that is, in the actual operation process, if the elevator stops at the 4th floor, before restarting the elevator, the standard comparison speed distribution curve corresponding to the 4th to 6th floors needs to be re-imported into the comparison coordinate system to complete the data update;

[0106] S53, selecting comparison points in the comparison coordinate system according to the acquired real-time state parameters, and generating an actual speed distribution curve by fitting the comparison points;

[0107] Get the real-time status parameters obtained in step 4 {H n 、V n}, and according to the real-time status parameters {H n 、V n} Selecting comparison points in the comparison coordinate system, and then generating an actual velocity distribution curve by fitting according to each of the comparison points;

[0108] It should be noted that the real-time status parameter {H n 、V n} is not acquired all at once, but is acquired continuously as the elevator runs, so the real-time status parameter {H n 、V n} is increasing, so it is necessary to constantly adjust the real-time status parameters {H n 、V n} The actual velocity distribution curve is not generated, and the comparison coordinate system is refreshed;

[0109] S54, setting the deviation redundancy, and generating an upper deviation curve and a lower deviation curve by combining the standard comparison speed distribution curve and the deviation redundancy;

[0110] S541, setting the speed upper deviation value and the speed lower deviation value according to actual needs;

[0111] There are certain errors in the detection of speed and height. Therefore, in order to ensure the normal operation of the equipment, it is necessary to set a certain deviation redundancy. The deviation redundancy includes upper deviation and lower deviation. The upper deviation and lower deviation are determined according to actual needs. For example, the upper deviation is set to +5% and the lower deviation is -5%. If the standard speed at a certain moment is 10m / s, the upper deviation is 10.5m / s and the lower deviation is 9.5m / s.

[0112] According to the above conversion formula, the upper and lower speed deviation values ​​at any time can be calculated;

[0113] S542, obtaining a comparison coordinate system with a standard comparison velocity distribution curve;

[0114] S543, shifting the standard comparison speed distribution curve upward according to the speed upper deviation value, and calibrating the upper deviation curve;

[0115] The upper deviation curve can be obtained by calculating the deviation value at the moment according to the method in step S541, and then generating it by fitting; however, its accuracy is poor;

[0116] Another feasible way is to obtain it by means of an offset curve according to a set deviation degree, so as to ensure the consistency between the upper deviation curve and the lower deviation curve.

[0117] S544. Shift the standard comparison speed distribution curve downward according to the speed lower deviation value to calibrate the lower deviation curve.

[0118] The lower deviation curve is obtained by using the lower deviation value in the same way as step S543;

[0119] It should be pointed out that the upper deviation and the lower deviation can be the same or different, depending on the actual situation.

[0120] S55. Generate an elevator speed control instruction according to the position of the actual speed distribution curve relative to the upper deviation curve and the lower deviation curve.

[0121] S551. If the actual speed distribution curve is between the upper deviation curve and the lower deviation curve, it is determined that the elevator running speed is normal;

[0122] S552: If the speed deviation curve is located above the upper deviation curve, it is determined that the elevator is overspeeding, and a deceleration control instruction is output;

[0123] S553, if the speed deviation curve is below the lower deviation curve, it is determined that the elevator speed does not meet the standard, and an acceleration control instruction is output;

[0124] The magnitude of acceleration and deceleration is determined according to the deviation, that is, according to the difference between the actual speed and the upper and lower deviations;

[0125] Compared with the prior art, the present application realizes the real-time collection of the elevator running speed by detecting the air pressure in the elevator shaft, compares the real-time speed with the standard speed to quickly determine whether the real-time speed of the elevator is within the normal range, and outputs the corresponding control instructions to realize the real-time control of the elevator running speed, avoiding the defect of poor speed control accuracy caused by the lag of speed parameters;

[0126] Secondly, the speed control system of the present application has a simple structure, which not only reduces the equipment cost, but also helps to improve the reliability and stability of the entire device.

[0127] The above are only preferred embodiments of the present application, and are not intended to limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the present application specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. An elevator speed control system, characterized in that: include: The speed detection module is used to obtain the real-time speed Vn of the elevator; where n represents the number compiled according to the order of acquisition; A height detection module (9) is used to obtain the real-time height Hn of the elevator operation; wherein n represents a number compiled according to the order of acquisition; A standard data generation module, used to generate several standard speed distribution curves of the elevator operation according to the floors to be stopped; A real-time data generation module, used to generate a number of real-time state parameters {Hn, Vn} of the elevator operation according to the real-time speed and real-time height; The comparison control module is used to generate an actual speed distribution curve according to each of the real-time state parameters, compare the actual speed distribution curve with the standard speed distribution curve, and generate an elevator speed control instruction.

2. An elevator running speed control system according to claim 1, characterized in that: The speed detection module comprises a detection box (1), on which an elastic diaphragm (2) and a static pressure pipe (3) are arranged, one end of the static pressure pipe (3) is connected to the detection box (1), and the other end thereof is connected to the car; the detection box (1) is also provided with a distance detection module (4) for measuring the deformation of the elastic diaphragm (2).

3. An elevator running speed control system according to claim 2, characterized in that: The detection box (1) is also threadedly connected to a sealing cover (5), and a ventilation hole (6) is provided on the sealing cover (5). The elastic diaphragm (2) is arranged on the sealing cover (5), and the elastic diaphragm (2) and the ventilation hole (6) are arranged opposite to each other. A limiting plate (7) that is tightly fitted with the elastic diaphragm (2) is also threadedly connected inside the sealing cover (5).

4. An elevator running speed control system according to claim 2 or 3, characterized in that: The elastic diaphragm (2) comprises a detection plate (201), an annular corrugated plate (202) and a mounting plate (203); along the radial direction of the elastic diaphragm (2), the detection plate (201), the annular corrugated plate (202) and the mounting plate (203) are coaxially connected in sequence.

5. An elevator running speed control system according to claim 4, characterized in that: The detection plate (201), the annular corrugated plate (202) and the mounting plate (203) are all rubber plates or silicone plates; a reinforcing mesh (204) is also embedded in the annular corrugated plate (202); and a reinforcing plate (205) is embedded in the mounting plate (203).

6. The control method of the elevator speed control system according to any one of claims 1 to 5, characterized in that: The following steps are involved: Get the real-time speed V of the elevator n ; Where n represents the number compiled according to the order of acquisition; Get the real-time height H of the elevator n ; Where n represents the number compiled according to the order of acquisition; Generate several standard speed distribution curves of the elevator operation according to the floors to be stopped; Generate the real-time state parameter {H} of the elevator operation according to the real-time speed and real-time height n 、V n }; An actual speed distribution curve is generated according to each of the real-time state parameters, and the actual speed distribution curve is compared with the standard speed distribution curve to generate an elevator speed control instruction.

7. The control method according to claim 6, characterized in that: The method of generating a plurality of standard speed distribution curves of the elevator operation according to the floors to be stopped comprises the following steps: Get the parameters of all floors to be stopped by the elevator; Calculate the number of floors to be operated between any two adjacent floors to be stopped according to the parameters of each floor to be stopped; According to the number of layers to be operated, several standard velocity distribution curves are retrieved from the database respectively; The standard speed distribution curves are arranged in sequence according to the order in which the elevators stop.

8. The control method according to claim 6, characterized in that: The method of generating an actual speed distribution curve according to each of the real-time state parameters, comparing the actual speed distribution curve with the standard speed distribution curve, and generating an elevator speed control instruction comprises the following steps: generating a comparison coordinate system, wherein the horizontal axis of the comparison coordinate system represents the height, and the vertical axis represents the speed; Selecting a standard comparison speed distribution curve from each of the standard speed distribution curves according to the current stop floor parameter of the elevator, and importing the standard comparison speed distribution curve into the comparison coordinate system; Selecting comparison points in the comparison coordinate system according to the acquired real-time state parameters, and generating an actual speed distribution curve by fitting the comparison points; Setting the deviation redundancy, and generating an upper deviation curve and a lower deviation curve by combining the standard comparison speed distribution curve and the deviation redundancy; An elevator speed control instruction is generated according to the position of the actual speed distribution curve relative to the upper deviation curve and the lower deviation curve.

9. The control method according to claim 8, characterized in that: The setting of the deviation redundancy, combining the standard comparison speed distribution curve and the deviation redundancy to generate an upper deviation curve and a lower deviation curve, comprises the following steps: Set the upper and lower speed deviation values ​​according to actual needs; Obtaining a comparison coordinate system with a standard comparison velocity distribution curve; The standard comparison speed distribution curve is shifted upward according to the speed upper deviation value to calibrate the upper deviation curve; The standard comparison speed distribution curve is shifted downward according to the speed lower deviation value to calibrate the lower deviation curve.

10. The control method according to claim 8, characterized in that: The step of generating an elevator speed control instruction according to the position of the actual speed distribution curve relative to the upper deviation curve and the lower deviation curve comprises the following steps: If the actual speed distribution curve is between the upper deviation curve and the lower deviation curve, it is determined that the elevator running speed is normal; If the speed deviation curve is located above the upper deviation curve, the elevator is judged to be overspeeding and a deceleration control command is output; If the speed deviation curve is located below the lower deviation curve, it is determined that the elevator speed does not meet the standard and an acceleration control instruction is output.

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