Floor positioning device and method for elevator

Abstract

The floor positioning device comprises an elevator shaft and a lift car, the lift car is arranged in the elevator shaft, calling devices are arranged outside the elevator shaft and in the lift car, a main controller for controlling operation of the lift car is further arranged in the elevator shaft, the calling devices are in communication connection with the main controller, and a transmission device is arranged at the top of the lift car. An RFID reader-writer is arranged on one side of the lift car, a plurality of RFID tags are arranged on the inner wall of the elevator shaft, and the transmission device is in communication connection with the main controller. A first fixing support is arranged at the top of the lift car, a first distance measuring device is arranged at the top of the first fixing support, a second fixing support is arranged at the bottom of the lift car, and a second distance measuring device is fixedly connected to the bottom of the second fixing support. According to the floor positioning device and method for the elevator, the position of the lift car is positioned for the first time through the RFID technology, then the distance measuring device is matched for accurate floor recognition, the positioning precision is greatly improved, and errors are reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of elevator control, and in particular to a floor positioning device and a positioning method for an elevator. Background Art

[0002] With the continuous development of modern construction technology, elevators have become an indispensable means of transportation in high-rise buildings. During the operation of the elevator, accurate and reliable floor positioning is the key to ensuring passenger safety and improving operating efficiency. At present, the positioning of elevator floors mainly adopts the combination of traditional travel switches and rotary encoders, and the current floor is determined by measuring the moving distance of the elevator car. However, this positioning method has the following disadvantages: first, the travel switch is easily affected by environmental factors such as dust and humidity, resulting in reduced positioning accuracy; second, the rotary encoder may have cumulative errors after long-term operation, which in turn affects the accurate judgment of the floor; finally, for situations where the floor spacing varies greatly or the floor height is inconsistent, the traditional positioning method cannot adapt.

[0003] Therefore, it is necessary to develop a novel elevator floor positioning device and positioning method to solve the problems existing in the prior art. Summary of the invention

[0004] 1. Technical issues to be solved

[0005] The invention provides an elevator floor positioning device and a positioning method, aiming to solve the problems of poor positioning accuracy and incompatibility with inconsistent floor spacing in the prior art.

[0006] (II) Technical solution

[0007] To achieve the above objectives, the present invention is implemented through the following technical solutions: a floor positioning device for an elevator, comprising an elevator shaft and a car, the car is arranged in the elevator shaft, a calling device is arranged outside the elevator shaft and inside the car, a main controller for controlling the operation of the car is also arranged in the elevator shaft, the calling device is communicatively connected with the main controller, a transmission device is arranged on the top of the car, an RFID reader is arranged on one side of the car, a plurality of RFID tags are arranged on the inner wall of the elevator shaft, and the transmission device is communicatively connected with the main controller;

[0008] A first fixed bracket is provided on the top of the car, a first distance measuring device is provided on the top of the first fixed bracket, a second fixed bracket is provided on the bottom of the car, and a second distance measuring device is fixedly connected to the bottom of the second fixed bracket;

[0009] The RFID reader / writer, the first distance measuring device and the second distance measuring device are electrically connected to the transmission device.

[0010] Preferably, the first ranging device and the second ranging device are arranged in the same vertical plane, and reflective plates are arranged at the top and bottom of the elevator shaft and at positions directly corresponding to the first ranging device.

[0011] Preferably, an acceleration sensor is also provided on the top of the car, and the acceleration sensor is electrically connected to the transmission device.

[0012] Preferably, the RFID tag is arranged in the middle between floors, and the RFID reader is arranged in the middle in the height direction of the car.

[0013] Preferably, the first fixed bracket includes a base 1, support frames 1 are arranged on both sides of the top of the base 1, a cross 1 is rotatably connected between the two support frames 1, both ends of the cross 1 are rotatably connected to support frames 1, a mounting seat 1 is fixedly connected to the surface of the support frame 1, fixing bolts 1 are symmetrically arranged on both sides of the mounting seat 1, a connecting frame is arranged at the bottom of the support frame 1, and a hanging hammer is fixedly connected to one end of the connecting frame.

[0014] Preferably, the second fixed bracket includes a base 2, support frames 2 are arranged on both sides of the top of the base 2, a cross 2 is rotatably connected between the two support frames 2, both ends of the cross 2 are rotatably connected to support frames 2, the surface of the support frame 2 is fixedly connected to a mounting seat 2, and fixing bolts 2 are symmetrically arranged on both sides of the mounting seat 2.

[0015] A positioning method for a floor positioning device of an elevator comprises the following steps:

[0016] S1. Before the elevator starts, the distance between the car and the bottom and top of the elevator shaft is measured by the distance measuring device to determine the position of the car, and the data is stored in the main controller;

[0017] S2, the elevator starts, by triggering the call device, the main control device controls the car to move towards the destination according to the control signal;

[0018] S3, the RFID reader starts working, continuously reads the information of the RFID tags passing by, starts the distance measuring device after reading the target RFID tag, and transmits the measurement data to the main controller;

[0019] S4. The main controller controls the car to stop at the corresponding floor according to the calculated car position.

[0020] Preferably, the main controller sends the positioning data and operating status information to the monitoring center via wireless transmission technology.

[0021] (III) Beneficial effects

[0022] The present invention provides a floor positioning device and positioning method for an elevator, which has the following beneficial effects:

[0023] The position of the car is initially located through RFID technology, and then the distance measuring device is used to accurately identify the floor, which greatly improves the positioning accuracy, reduces errors, avoids the distance measuring device from working continuously during the operation of the car, and is not affected by environmental factors; two distance measuring devices are set at the same time, which can verify each other and improve the robustness of the system; the fixed bracket is set to avoid the influence of the shaking of the car on the distance measuring device, further improving the positioning accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0025] Figure 2 It is a schematic structural diagram of the first fixing bracket of the present invention;

[0026] Figure 3 is a schematic structural diagram of a second fixing bracket of the present invention;

[0027] Figure 4 This is a flow chart of the positioning method of the present invention.

[0028] In the figure: 1-elevator shaft, 2-car, 3-calling device, 4-main controller, 5-transmission device, 6-RFID reader / writer, 7-RFID tag, 8-first fixed bracket, 81-base one, 82-support frame one, 83-cross one, 84-support frame one, 85-mounting seat one, 86-connecting frame, 87-hanging hammer, 88-fixing bolt one, 9-first distance measuring device, 10-second fixed bracket, 101-base two, 102-support frame two, 103-cross two, 104-support frame two, 105-mounting seat two, 106-fixing bolt two, 11-second distance measuring device, 12-reflection plate, 13-acceleration sensor. DETAILED DESCRIPTION

[0029] 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.

[0030] See also Figure 1-4The present invention provides a technical solution: a floor positioning device of an elevator, comprising an elevator shaft 1 and a car 2, the car 2 is arranged in the elevator shaft 1, a driving device for driving the car 2 to rise and fall is arranged on the top of the elevator shaft 1, a calling device 3 is arranged outside the elevator shaft 1 and inside the car 2, a main controller 4 for controlling the operation of the car 2 is also arranged in the elevator shaft 1, the main controller 4 controls the operation of the driving device, the calling device 3 is communicatively connected with the main controller 4, a transmission device 5 is arranged on the top of the car 2, an RFID reader / writer 6 is arranged on one side of the car 2, a plurality of RFID tags 7 are arranged on the inner wall of the elevator shaft 1, the transmission device 5 is communicatively connected with the main controller 4, the RFID reader / writer 6, the first distance measuring device 9 and the second distance measuring device 11 are electrically connected with the transmission device 5, so as to realize the transmission of the read information and the measurement information to the main controller 4.

[0031] Different floor information is set in multiple RFID tags 7, and the RFID tag 7 is set in the middle position between floors. The RFID reader 6 is set in the middle of the height direction of the car 2. When the RFID reader 6 reads the RFID tag 7 of the floor information called by the calling device 3, the distance between the car 2 and the destination floor is half the height of the car 2.

[0032] A first fixed bracket 8 is provided on the top of the car 2, a first distance measuring device 9 is provided on the top of the first fixed bracket 8, a second fixed bracket 10 is provided on the bottom of the car 2, and a second distance measuring device 11 is fixedly connected to the bottom of the second fixed bracket 10;

[0033] The first distance measuring device 9 and the second distance measuring device 11 are arranged in the same vertical plane. Reflection plates 12 are arranged at the top and bottom of the elevator shaft 1 and at positions corresponding to the first distance measuring device 9. The distance measuring device adopts a commercially available laser distance meter. Since the sum of the distances of the car 2 from the top and the bottom of the elevator shaft 1 remains unchanged during operation, the use of two distance measuring devices can improve the detection accuracy and realize accurate positioning of the elevator floor.

[0034] An acceleration sensor 13 is also provided on the top of the car 2. The acceleration sensor 13 is electrically connected to the transmission device 5. The acceleration sensor 13 can monitor the motion state of the elevator car in real time in order to improve the robustness of the system.

[0035] The first fixed bracket 8 includes a base 81, support frames 82 are arranged on both sides of the top of the base 81, a cross 83 is rotatably connected between the two support frames 82, support frames 84 are rotatably connected to the two ends of the cross 83, a mounting seat 85 is fixedly connected to the surface of the support frame 84, fixing bolts 88 are symmetrically arranged on both sides of the mounting seat 85, a connecting frame 86 is arranged at the bottom of the support frame 82, a pendulum 87 is fixedly connected to one end of the connecting frame 86, the mass of the pendulum 87 is greater than the sum of the weights of the mounting seat 85 and the first distance measuring device 9, thereby ensuring that the pendulum 87 is located at the bottom of the distance measuring device, and utilizing the cross-shaped structure to reduce the influence of the shaking of the car 2 on the distance measuring device, thereby ensuring that the distance measuring device 9 is in a vertical state, and improving the measurement accuracy.

[0036] The second fixed bracket 10 includes a base 101, support frames 102 are arranged on both sides of the top of the base 101, a cross 103 is rotatably connected between the two support frames 102, and support frames 104 are rotatably connected at both ends of the cross 103. A mounting seat 105 is fixedly connected to the surface of the support frame 104, and fixing bolts 106 are symmetrically arranged on both sides of the mounting seat 105. The same structure reduces the influence of the shaking of the car 2 on the distance measuring device and improves the measurement accuracy.

[0037] A positioning method for a floor positioning device of an elevator comprises the following steps:

[0038] S1. Before the elevator starts, the distance between the car and the bottom and top of the elevator shaft is measured by the distance measuring device to determine the position of the car, and the data is stored in the main controller;

[0039] S2, the elevator starts, by triggering the call device, the main control device controls the car to move towards the destination according to the control signal;

[0040] S3, the RFID reader starts working, continuously reads the information of the RFID tags passing by, starts the distance measuring device after reading the target RFID tag, and transmits the measurement data to the main controller;

[0041] S4. The main controller controls the car to stop at the corresponding floor according to the calculated car position.

[0042] The main controller sends positioning data and operating status information to the monitoring center through wireless transmission technology, which facilitates management personnel to conduct real-time monitoring and maintenance.

[0043] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the statement "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0044] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An elevator floor positioning device, comprising an elevator shaft (1) and a car (2), wherein the car (2) is arranged in the elevator shaft (1), a calling device (3) is arranged outside the elevator shaft (1) and inside the car (2), and a main controller (4) for controlling the operation of the car (2) is also arranged in the elevator shaft (1), and the calling device (3) is communicatively connected with the main controller (4), characterized in that: A transmission device (5) is arranged on the top of the car (2), an RFID reader (6) is arranged on one side of the car (2), a plurality of RFID tags (7) are arranged on the inner wall of the elevator shaft (1), and the transmission device (5) is communicatively connected with a main controller (4); A first fixed bracket (8) is arranged on the top of the car (2), a first distance measuring device (9) is arranged on the top of the first fixed bracket (8), a second fixed bracket (10) is arranged on the bottom of the car (2), and a second distance measuring device (11) is fixedly connected to the bottom of the second fixed bracket (10); The RFID reader / writer (6), the first distance measuring device (9) and the second distance measuring device (11) are electrically connected to the transmission device (5).

2. The floor positioning device of an elevator according to claim 1, characterized in that: The first distance measuring device (9) and the second distance measuring device (11) are arranged in the same vertical plane, and reflecting plates (12) are arranged at the top and bottom of the elevator shaft (1) and at positions directly corresponding to the first distance measuring device (9).

3. The floor positioning device of an elevator according to claim 1, characterized in that: An acceleration sensor (13) is also provided on the top of the car (2), and the acceleration sensor (13) is electrically connected to the transmission device (5).

4. The floor positioning device of an elevator according to claim 1, characterized in that: The RFID tag (7) is arranged at a middle position between floors, and the RFID reader / writer (6) is arranged at a middle position in a height direction of the car (2).

5. The floor positioning device of an elevator according to claim 1, characterized in that: The first fixed bracket (8) includes a base (81), support frames (82) are arranged on both sides of the top of the base (81), a cross (83) is rotatably connected between the two support frames (82), both ends of the cross (83) are rotatably connected to a support frame (84), the surface of the support frame (84) is fixedly connected to a mounting seat (85), fixing bolts (88) are symmetrically arranged on both sides of the mounting seat (85), a connecting frame (86) is arranged at the bottom of the support frame (82), and one end of the connecting frame (86) is fixedly connected to a hanging hammer (87).

6. The floor positioning device of an elevator according to claim 1, characterized in that: The second fixed bracket (10) comprises a base 2 (101), support frames 2 (102) are arranged on both sides of the top of the base 2 (101), a cross 2 (103) is rotatably connected between the two support frames 2 (102), and support frames 2 (104) are rotatably connected at both ends of the cross 2 (103), a mounting seat 2 (105) is fixedly connected to the surface of the support frame 2 (104), and fixing bolts 2 (106) are symmetrically arranged on both sides of the mounting seat 2 (105).

7. A positioning method for a floor positioning device of an elevator according to any one of claims 1 to 6, characterized in that: The following steps are involved: S1. Before the elevator starts, the distance between the car and the bottom and top of the elevator shaft is measured by the distance measuring device to determine the position of the car, and the data is stored in the main controller; S2, the elevator starts, by triggering the call device, the main control device controls the car to move towards the destination according to the control signal; S3, the RFID reader starts working, continuously reads the information of the RFID tags passing by, starts the distance measuring device after reading the target RFID tag, and transmits the measurement data to the main controller; S4. The main controller controls the car to stop at the corresponding floor according to the calculated car position.

8. A positioning method for a floor positioning device of an elevator according to claim 7, characterized in that: The main controller sends the positioning data and operation status information to the monitoring center through wireless transmission technology.

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