Elevator floor position learning system

Abstract

The invention discloses an elevator floor position learning system which comprises a lift car absolute position detection device, an elevator control system and a travel switch. The lift car absolute position detection device comprises an absolute position sensor and a position information coding device; the position information encoding device is vertically fixed in an elevator shaft, the absolute position sensor is installed on an elevator car, and real-time position information of the car in the shaft is detected by reading encoding information on the position information encoding device; the elevator control system is connected with the lift car absolute position detection device through a bus so as to obtain lift car position information. The elevator control system is connected with the travel switch through a wire harness so as to obtain the action state of the travel switch; the travel switch is installed on the side, close to the landing door, of the elevator car, and when the end of the travel switch makes contact with the switch triggering piece at the position where the elevator car is located, the travel switch acts. And when the end part of the travel switch is not in contact with the switch triggering piece, the travel switch automatically resets. The floor position learning operation is simple and easy to implement, and the hardware cost is extremely low.

Description

Technical Field

[0001] The invention relates to the field of elevator control, and in particular to an elevator floor position learning system, which is particularly suitable for elevators equipped with absolute position detection devices. Background Art

[0002] With the development of technology, more and more elevators are equipped with absolute position detection devices, which are used to detect the position of the elevator car in the hoistway.

[0003] There are generally two ways to learn the floor position of an elevator equipped with an absolute position detection device:

[0004] Method 1: One person is inspecting and operating the elevator on the top of the car, while another person is in the car. When the elevator reaches the floor where it needs to stop, it stops and then opens the door. The person in the car measures the horizontal deviation between the car sill and the floor door sill, and inputs the deviation value into the elevator control system through the human-machine interface. The elevator control system then calculates the leveling position of this floor based on the car position value transmitted by the absolute position detection device at this time. The same operation steps need to be repeated for each floor that needs to stop to complete the floor position learning, which is time-consuming and laborious.

[0005] Method 2: Add markers and sensors to the sills of the floor doors and car doors, such as magnetic switches and magnetic strips, photoelectric switches and baffles. Although this method can save the time required by method 1 for two people to cooperate in leveling position calibration on each floor, it also increases the installation time and material costs. For example, a magnetic strip or baffle needs to be installed on the floor door sill of each floor, and a magnetic switch or photoelectric switch needs to be installed on the car door sill. In addition, the installation accuracy of the markers and sensors is also very high. When the sensor detects the marker, the hall door sill and the car sill must be horizontally aligned. Otherwise, the car position value of the absolute position detection device recorded by the control system when the sensor detects the marker is not the accurate leveling position. For example, Chinese patent document CN210682871U discloses this method. Method 2 also has another problem: the area where the sensor detects the marker has a certain range, and the sensor action has a delay. The position value of the sensor action is different for different elevator running directions or speeds. The control system needs to correct the learned leveling position value according to the operating conditions. Summary of the invention

[0006] The technical problem to be solved by the present invention is how to provide a technical solution for learning the floor position of an elevator which is simple to operate and efficient.

[0007] In order to solve the above technical problems, the present invention provides an elevator floor position learning system, comprising a car absolute position detection device, an elevator control system and a travel switch;

[0008] The car absolute position detection device comprises an absolute position sensor and a position information encoding device; the position information encoding device is vertically fixed in the elevator shaft, and the absolute position sensor is installed on the elevator car, and the real-time position information of the car in the shaft is detected by reading the encoding information on the position information encoding device;

[0009] The elevator control system is connected to the car absolute position detection device through a bus to obtain the car position information; the elevator control system is connected to the travel switch through a wiring harness to obtain the action state of the travel switch;

[0010] The travel switch is installed on the elevator car near the landing door, and the end of the travel switch partially overlaps with the switch trigger on the vertical projection plane; when the elevator car is located so that the end of the travel switch contacts the switch trigger, the travel switch is actuated; when the end of the travel switch does not contact the switch trigger, the travel switch automatically resets; the switch trigger is a floor sill or a landing door upper sill.

[0011] Preferably, the method for performing floor position learning using the elevator floor position learning system is:

[0012] Control the elevator car to run from the first terminal floor to the second terminal floor; obtain the leveling position value of the first terminal floor; obtain the leveling position value of the second terminal floor;

[0013] When the elevator car is in operation, the travel switch contacts the first terminal floor switch trigger and each intermediate floor switch trigger; record the car position value when the travel switch contacts the first terminal floor switch trigger and each intermediate floor switch trigger; calculate the first deviation between the leveling position value of the first terminal floor and the car position value when the travel switch contacts the first terminal floor switch trigger; calculate the leveling position values ​​of all corresponding intermediate floors according to the car position value when the travel switch contacts the intermediate floor switch trigger and the first deviation;

[0014] When the elevator car is in operation, the travel switch contacts the second terminal floor switch trigger and each intermediate floor switch trigger; record the car position value when the travel switch contacts the second terminal floor switch trigger and each intermediate floor switch trigger; calculate the second deviation between the leveling position value of the second end floor and the car position value when the travel switch contacts the second terminal floor switch trigger; calculate the leveling position values ​​of all corresponding intermediate floors based on the car position value when the travel switch contacts the switch trigger of each intermediate floor and the second deviation.

[0015] Preferably, when controlling the elevator car to run from the first terminal floor to the second terminal floor, the travel switch contacts the switch trigger member of the first terminal floor or the second terminal floor and the switch trigger members of all intermediate floors at the same speed.

[0016] Preferably, the travel switch is a lever-type travel switch, and the lever-type travel switch can act in both directions.

[0017] Preferably, when the lever-type travel switch contacts the upper surface or the lower surface of the switch triggering member, the lever-type travel switch can be actuated.

[0018] Preferably, the travel switch is a roller type travel switch.

[0019] Preferably, the installation position of the travel switch is higher than the car sill.

[0020] Preferably, the travel switch is installed on the car top.

[0021] Preferably, the installation position of the travel switch is lower than the car sill.

[0022] Compared with the prior art, the present invention can automatically complete the position learning of each intermediate floor by installing a travel switch on the car and utilizing the existing floor door sill or floor door upper sill frame of the elevator. After the learning is completed, the travel switch can be removed and used for the floor position learning of other elevators. Not only is the operation of floor position learning simple and easy, but the hardware cost is also extremely low. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments:

[0024] Figure 1 Schematic diagram of the floor position learning system and the floor position learning process of Example 1 and Example 2;

[0025] Figure 2 Schematic diagram of the floor position learning system and the floor position learning process of Example 3;

[0026] Figure 3 Schematic diagram of the floor position learning system and the floor position learning process of Example 4;

[0027] Figure 4 Schematic diagram of the floor position learning system and the floor position learning process of Example 5. DETAILED DESCRIPTION

[0028] The following describes the implementation methods of the present invention through specific specific embodiments, and those skilled in the art can fully understand other advantages and technical effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through different specific implementation methods, and the details in this specification can also be applied based on different viewpoints, and various modifications or changes can be made without deviating from the overall design concept of the invention. It should be noted that the following embodiments and the features in the embodiments can be combined with each other in the absence of conflict. The following exemplary embodiments of the present invention can be implemented in a variety of different forms and should not be interpreted as being limited to the specific embodiments described herein. It should be understood that these embodiments are provided to make the disclosure of the present invention thorough and complete, and to fully convey the technical solutions of these exemplary specific embodiments to those skilled in the art.

[0029] Example 1

[0030] like Figure 1 , shows an elevator system, in which a car 4 and a counterweight 10 are suspended on a traction machine 9, and the traction machine 9 drives the car 4 to run in the elevator shaft. The elevator system has a car absolute position detection device, which includes an absolute position sensor 2 and a position information encoding device 3. The position information encoding device 3 is vertically fixed in the elevator shaft, and the absolute position sensor 2 is installed on the elevator car 4. The real-time position information of the car 4 in the shaft is detected by reading the encoded information on the position information encoding device 3. The elevator control system 8 controls the elevator system, and the elevator control system 8 and the traction machine 9 are fixed in the upper part of the shaft or in the machine room above the shaft. The elevator system serves each floor in the building, and the top and bottom floors served by the elevator are also called terminal floors, and each floor located between the top and bottom floors is called an intermediate floor. The terminal floors and the intermediate floors have a landing door system, and the landing door system includes a landing door sill and a landing door upper sill frame, such as a top floor door sill 5, an intermediate floor door sill 6, and a bottom floor door sill 7.

[0031] The elevator system has a floor position learning system. The floor position learning system provided in this embodiment includes a car absolute position detection device, an elevator control system 8 and a travel switch 1. The travel switch 1 is installed on the elevator car 4 near the floor door, and the end of the travel switch 1 partially overlaps with the switch trigger on the vertical projection plane; when the elevator car 4 is located so that the end of the travel switch contacts the switch trigger, the travel switch operates; when the end of the travel switch 1 does not contact the switch trigger, the travel switch automatically resets. The switch trigger here is a floor sill or a floor door upper sill frame, which utilizes the components already present in the elevator system.

[0032] The elevator control system 8 is connected to the car absolute position detection device through a bus to obtain the car position information; the elevator control system 8 is connected to the travel switch 1 through a wiring harness to obtain the operating state of the travel switch 1.

[0033] The method for the elevator floor position learning system to learn the floor position is:

[0034] Control the elevator car to run from the first terminal floor to the second terminal floor; obtain the leveling position value of the first terminal floor; obtain the leveling position value of the second terminal floor;

[0035] When the elevator car is in operation, the travel switch contacts the first terminal floor switch trigger and each intermediate floor switch trigger; record the car position value when the travel switch contacts the first terminal floor switch trigger and each intermediate floor switch trigger; calculate the first deviation between the leveling position value of the first terminal floor and the car position value when the travel switch contacts the first terminal floor switch trigger; calculate the leveling position values ​​of all corresponding intermediate floors according to the car position value when the travel switch contacts the intermediate floor switch trigger and the first deviation;

[0036] When the elevator car is in operation, the travel switch contacts the second terminal floor switch trigger and each intermediate floor switch trigger; record the car position value when the travel switch contacts the second terminal floor switch trigger and each intermediate floor switch trigger; calculate the second deviation between the leveling position value of the second end floor and the car position value when the travel switch contacts the second terminal floor switch trigger; calculate the leveling position values ​​of all corresponding intermediate floors based on the car position value when the travel switch contacts the switch trigger of each intermediate floor and the second deviation.

[0037] The first terminal floor is the top floor or the bottom floor; when the first terminal floor is the top floor, the second terminal floor is the bottom floor; conversely, when the first terminal floor is the bottom floor, the second terminal floor is the top floor.

[0038] The method for obtaining the leveling position values ​​of the first terminal floor and the second terminal floor may utilize the method of method 1 in the background technology.

[0039] Therefore, this embodiment can automatically complete the position learning of each intermediate floor by installing a travel switch on the car and using the existing floor door sill or floor door upper sill frame of the elevator as the triggering device of the travel switch. After the floor position learning is completed, the travel switch can be removed and used for the floor position learning of other elevators. Therefore, the operation of the floor position learning system of this embodiment is simple and easy, and the hardware cost is extremely low.

[0040] Preferably, in the process of controlling the elevator car to run from the first terminal floor to the second terminal floor, the speed at which the travel switch contacts the switch trigger of the first terminal floor or the second terminal floor and the switch trigger of all intermediate floors is the same. This can eliminate the deviation in floor position learning caused by different delays in travel switch action.

[0041] In the description of the following embodiments, the floor door sill is used as the switch triggering element for illustration.

[0042] Example 2

[0043] Based on Example 1, this example further illustrates an exemplary process of floor position learning by the elevator floor position learning system.

[0044] like Figure 1 As shown, the travel switch 1 of this embodiment is a lever-type travel switch, which can act in both directions. The travel switch 1 is installed on the top of the car, at a level higher than the car sill. The first terminal floor is the top floor, and the second terminal floor is the bottom floor.

[0045] The specific floor position learning process of this embodiment includes the following steps:

[0046] S1, control the car 4 to be at the top floor, first complete the leveling position learning of the top floor, that is, obtain the leveling position value of the top floor, the method can refer to the method 1 in the background technology, and the leveling position value of the top floor is stored in the elevator control system 8;

[0047] S2, control the elevator car 4 to move downward, and the travel switch 1 touches the upper surface of the top floor door sill 5 and the upper surface of the middle floor door sill 6 in sequence until the elevator moves to the bottom floor;

[0048] S3, after the elevator control system 8 detects the action of the travel switch 1, it records the car position value when the travel switch touches the top floor door sill 5 and the middle floor door sill 6 according to the data transmitted by the absolute position sensor 2.

[0049] Calculate the deviation between the leveling position value of the top floor and the car position value when the travel switch touches the door sill of the top floor; calculate the leveling position value of the corresponding intermediate floor according to the car position value when the travel switch touches the door sill of each intermediate floor and the deviation, and save it in the elevator control system 8;

[0050] S4, when the elevator car 4 is at the bottom floor, the bottom floor leveling position learning is completed, that is, the bottom floor leveling position value is obtained. The learning method can refer to the method 1 in the background technology. The bottom floor leveling position value is stored in the elevator control system 8.

[0051] In this embodiment, except for the leveling positions of the top and bottom floors which need to be learned separately, the leveling positions of the middle floors can be automatically learned with the help of travel switches, which shortens the working hours required for floor learning and has extremely low hardware costs.

[0052] Example 3

[0053] Based on Example 1, this example further illustrates an exemplary process of floor position learning by the elevator floor position learning system.

[0054] like Figure 2 As shown, the travel switch 1 of this embodiment is a lever-type travel switch, which can act in both directions. The travel switch 1 is installed on the top of the car, at a level higher than the car sill. The first terminal floor is the bottom floor, and the second terminal floor is the top floor.

[0055] The specific floor position learning process of this embodiment includes the following steps:

[0056] S1, control the car 4 to be at the bottom floor, first complete the bottom floor leveling position learning, the learning method can refer to method 1, the bottom floor leveling position value is saved in the elevator control system 8;

[0057] S2, control the elevator car 4 to move upward, and the travel switch 1 touches the lower surface of the middle floor door sill 6 and the lower surface of the top floor door sill 5 in sequence, until the elevator runs to the top floor;

[0058] S3, when the elevator car 4 is at the top floor, the top floor leveling position learning is completed. The learning method can refer to method 1, and the top floor leveling position value is saved in the elevator control system 8;

[0059] S4, after the elevator control system 8 detects the action of the travel switch 1, it records the car position value when the travel switch contacts the top floor door sill 5 and the middle floor door sill 6 according to the data transmitted by the absolute position sensor 2;

[0060] Calculate the deviation between the leveling position value of the top floor and the car position value when the travel switch touches the door sill of the top floor; calculate the leveling position value of the corresponding intermediate floor according to the car position value when the travel switch touches the door sill of each intermediate floor and the deviation, and save it in the elevator control system 8.

[0061] In this embodiment, the travel switch contacts the lower surface of the landing door sill.

[0062] Example 4

[0063] like Figure 3As shown, the only difference between this embodiment and embodiment 2 is the type of travel switch. The travel switch of embodiment 2 is a lever type, and the main contact between it and the floor door sill is the upper surface of the sill. In this embodiment, the travel switch is a roller type, and the main contact between it and the floor door sill is the vertical surface of the floor door sill.

[0064] The lever-type travel switch used in Example 2 and Example 3 can generally fluctuate in both directions, so the installation position and installation direction of the travel switch can be exactly the same in Example 2 and Example 3. However, the roller-type travel switch in this embodiment can generally only touch in one direction. If it is necessary to refer to Example 3 to start learning the floor position from the bottom floor, the travel switch 1 needs to be installed with the roller facing downward so that it can touch the door sill.

[0065] Example 5

[0066] like Figure 4 As shown, the biggest difference between this embodiment and embodiment 2, embodiment 3 and embodiment 4 is that the travel switch 1 is installed at a position lower than the level of the car sill. The travel switch 1 is a lever type, installed at the bottom of the car, below the level of the car sill.

[0067] The specific floor position learning process of this embodiment includes the following steps:

[0068] S1, control the car 4 to be at the bottom floor, first complete the bottom floor leveling position learning, the learning method can refer to method 1, the bottom floor leveling position value is saved in the elevator control system 8;

[0069] S2, control the elevator to move upward, and the travel switch 1 touches the lower surface of the bottom floor door sill 7 and the middle floor door sill 6 in turn until the elevator runs to the top floor;

[0070] S3, when the elevator car 4 is at the top floor, the top floor leveling position learning is completed. The learning method can refer to method 1. The top floor leveling position value is saved in the elevator control module 8.

[0071] S4, after the elevator control system 8 detects the action of the travel switch 1, it records the car position value when the travel switch contacts the bottom floor door sill 7 and the middle floor door sill 6 according to the data transmitted by the absolute position sensor 2;

[0072] Calculate the deviation between the leveling position value of the bottom floor and the car position value when the travel switch touches the door sill of the bottom floor; calculate the leveling position value of the corresponding middle floor according to the car position value when the travel switch touches the door sill of each middle floor and the deviation, and save it in the elevator control system 8.

[0073] In this embodiment, since the travel switch 1 is installed at the bottom of the car, it is not convenient to install and adjust, and the convenience is lower than that of Embodiments 2, 3 and 4.

[0074] The present invention has been described in detail above through specific implementation modes and embodiments, but these do not constitute limitations of the present invention. Without departing from the principles of the present invention, those skilled in the art may also make many variations and improvements, which should also be regarded as the protection scope of the present invention.

Claims

1. An elevator floor position learning system, characterized in that: It includes a car absolute position detection device, an elevator control system and a travel switch; The car absolute position detection device comprises an absolute position sensor and a position information encoding device; the position information encoding device is vertically fixed in the elevator shaft, and the absolute position sensor is installed on the elevator car, and the real-time position information of the car in the shaft is detected by reading the encoding information on the position information encoding device; The elevator control system is connected to the car absolute position detection device through a bus to obtain the car position information; the elevator control system is connected to the travel switch through a wiring harness to obtain the action state of the travel switch; The travel switch is installed on the elevator car near the landing door, and the end of the travel switch partially overlaps with the switch trigger on the vertical projection plane; when the elevator car is located so that the end of the travel switch contacts the switch trigger, the travel switch is actuated; when the end of the travel switch does not contact the switch trigger, the travel switch automatically resets; The switch triggering member is a floor door sill or a floor door upper sill frame.

2. The elevator floor position learning system according to claim 1, characterized in that: The method for performing floor position learning using the elevator floor position learning system is as follows: Controlling the elevator car to run from the first terminal floor to the second terminal floor; Get the leveling position value of the first terminal floor; Get the leveling position value of the second terminal floor; When the elevator car is in operation, the travel switch contacts the first terminal floor switch trigger and each intermediate floor switch trigger; record the car position value when the travel switch contacts the first terminal floor switch trigger and each intermediate floor switch trigger; calculate the first deviation between the leveling position value of the first terminal floor and the car position value when the travel switch contacts the first terminal floor switch trigger; calculate the leveling position values ​​of all corresponding intermediate floors according to the car position value when the travel switch contacts the intermediate floor switch trigger and the first deviation; When the elevator car is in operation, the travel switch contacts the second terminal floor switch trigger and each intermediate floor switch trigger; record the car position value when the travel switch contacts the second terminal floor switch trigger and each intermediate floor switch trigger; calculate the second deviation between the leveling position value of the second end floor and the car position value when the travel switch contacts the second terminal floor switch trigger; calculate the leveling position values ​​of all corresponding intermediate floors based on the car position value when the travel switch contacts the switch trigger of each intermediate floor and the second deviation.

3. The elevator floor position learning system according to claim 2, characterized in that: When controlling the elevator car to run from the first terminal floor to the second terminal floor, the travel switch has the same speed when contacting the switch triggering member of the first terminal floor or the second terminal floor and the switch triggering members of all the intermediate floors.

4. The elevator floor position learning system according to claim 1, characterized in that: The travel switch is a lever-type travel switch, and the lever-type travel switch can act in two directions.

5. The elevator floor position learning system according to claim 4, characterized in that: When the lever-type travel switch contacts the upper surface or the lower surface of the switch triggering member, the lever-type travel switch can be actuated.

6. The elevator floor position learning system according to claim 1, characterized in that: The travel switch is a roller type travel switch.

7. The elevator floor position learning system according to claim 2, characterized in that: The installation position of the travel switch is higher than the car sill.

8. The elevator floor position learning system according to claim 7, characterized in that: The installation position of the travel switch is located on the top of the car.

9. The elevator floor position learning system according to claim 2, characterized in that: The installation position of the travel switch is lower than the car sill.

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