Method and device for confirming and displaying position of elevator car

Abstract

The invention discloses an elevator car position confirmation and display device which comprises an elevator control system, an elevator car and an external calling device, and the external calling device comprises a processor module, a communication module, an elevator calling module, a sampling module, a resistance adjusting module, a display module and a power module. The communication module, the elevator calling module, the sampling module, the power supply module and the display module are respectively connected with the processor module, the resistance adjusting module is connected with the sampling module, the sampling module is used for sampling the resistance adjusting module in real time and sending sampling data to the processor module, and the processor module calculates to obtain a corresponding floor position; the external calling device keeps an AD voltage value table of each floor and calculates the position of the elevator car through a formula, so that rescue workers can conveniently, rapidly and accurately position the position of the elevator car for rescue and judge when turning rescue is needed, and turning of the upper floor or the lower floor is faster; according to the scheme, the position of the elevator car is accurate.

Description

Technical Field

[0001] The present invention belongs to the technical field of elevator cars, and in particular relates to a method and device for confirming and displaying the position of an elevator car. Background Art

[0002] With the rapid development of society, elevators are becoming more and more popular, bringing great convenience to people's lives and work. However, during the operation of the elevator, elevator failures or power outages are inevitable. When an elevator fails or a power outage occurs, the elevator will stop immediately. If passengers are trapped, external rescue personnel need to accurately and quickly determine the location of the car. The current practice is generally to determine the location of the car based on floor indicators, computer displays or opening the hall door.

[0003] Due to various faults, emergency stop slips and long power outages, indicator lights and computer displays cannot be accurately judged most of the time. Most of the time, rescue workers can only make judgments by opening the hall door. This method has risks on the one hand and low rescue efficiency on the other.

[0004] Chinese invention patent CN 110526057 B discloses a system, method and device for confirming the position of an elevator car, wherein the system for confirming the position of an elevator car includes a controller, a rotary encoder, a power failure emergency device and a leveling sensor; when the elevator loses power, the power failure emergency device counts the number of leveling signals transmitted by the leveling sensor during the period when the power grid power supply is in a power-off state. The initial position of the car can be obtained by the rotary encoder, and the second position of the elevator car can be obtained according to the number and initial position of the leveling signal. The controller obtains the operation data and initial position of the elevator car when the elevator car enters the power failure state, and processes the initial position operation data to obtain the first position of the elevator car. The positions of the elevator car obtained by the two methods are compared, that is, by comparing the first position and the second position, so that a more accurate position of the elevator car can be obtained, which is conducive to improving the speed of the elevator's self-rescue leveling when the power is restored and the safety of the elevator.

[0005] Therefore, the present invention provides a method and device for confirming and displaying the position of an elevator car to solve the problems raised by the above background technology. Summary of the invention

[0006] In view of the problems raised by the above background technology, the purpose of the present invention is to provide a method and device for confirming and displaying the position of an elevator car, which is conducive to accurately determining the position of the elevator car and performing rapid rescue.

[0007] In order to achieve the above technical objectives, the technical solution adopted by the present invention is as follows:

[0008] A method and device for confirming and displaying the position of an elevator car, comprising an elevator control system, an elevator car and an external call device, wherein the external call device comprises a processor module, a communication module, an elevator calling module, a sampling module, a resistance adjustment module, a display module and a power supply module, wherein the communication module, the elevator calling module, the sampling module, the power supply module and the display module are respectively connected to the processor module, the resistance adjustment module is connected to the sampling module, the sampling module is used to sample the resistance adjustment module in real time, and send the sampled data to the processor module, and the processor module calculates the corresponding floor position.

[0009] It is further defined that it also includes a working power supply and a backup power supply, the power supply module is connected to the working power supply and the backup power supply respectively, the backup power supply is used to supply power to the external device when the elevator is abnormally powered off, and the power supply module is used to detect the working condition of the working power supply, and automatically switch to the backup power supply for power supply if an abnormality occurs.

[0010] It is further defined that a resistance voltage divider module is integrated in the hall call device, and the resistance voltage divider module is arranged in the hoistway of the elevator car.

[0011] A method for confirming and displaying the position of an elevator car, comprising a self-learning step of an external call device:

[0012] S1: Self-learning floor height mode, the elevator control system controls the hall call device to enter the self-learning floor height mode;

[0013] S2: The elevator runs from bottom to top or from top to bottom, and the sampling module of the hall call device samples the AD voltage value of each floor, stores the sampled data in the local storage unit, and generates an AD value table.

[0014] Further, the AD voltage value of each floor is recorded in the form of V1 for the 1st floor, V2 for the 2nd floor, and V N-1 、N floor is denoted as V N .

[0015] Further limitations include the working process of the hall call device when the elevator power supply is abnormal and people are trapped in the elevator, specifically:

[0016] S10: When the hall call device detects abnormal power failure of the working power supply through the power module, it switches to the backup power supply for power supply and enters the rescue auxiliary mode;

[0017] S11: The hall call device collects the current AD voltage value through the sampling module, and measures the actual AD voltage value, which is recorded as V;

[0018] S12: Compare the actual AD voltage value with the local AD value table, calculate the actual floor of the current elevator car, and display it through the display module;

[0019] S13: When the power module of the hall call device detects that the working power returns to normal, it automatically switches to the normal working mode;

[0020] S14: The hall call device transmits the actual AD voltage value V and the Nth floor AD voltage value V through the communication module. N and N-1F AD voltage value V N-1 Send to the elevator control system;

[0021] S15: The elevator control system sets V and V according to the car position judgment logic. N and V N-1 The value is compared with the value of the elevator, and then the elevator car is controlled to run for self-rescue, run to the nearest floor and open the elevator car door automatically. At the same time, the external call device returns to normal mode and displays the floor value of the elevator operation.

[0022] Further defined, the car position determination logic in S15 is as follows:

[0023] V N-1 =V–V N-1 and V N =V N –V

[0024] When V ≥ V N When V≤V1, the elevator car is at the bottom floor.

[0025] When V N-1 >V N When the car is located at floor N, when V N-1 ≤V N When , the car is located at the N-1 floor.

[0026] Further limitation includes that when the elevator is abnormal or the power supply is abnormal and cannot be restored and people are trapped in the elevator and need manual rescue, the working process of the external call device is as follows:

[0027] S21: When the hall call device detects abnormal power failure of the working power supply through the power module, it switches to the backup power supply for power supply and enters the rescue auxiliary mode;

[0028] S22: The hall call device collects the current AD voltage value through the sampling module, and measures the actual AD voltage value, which is recorded as V;

[0029] S23: Compare the actual AD voltage value with the local AD value table, calculate the actual floor of the current elevator car, and display it through the display module;

[0030] S24: Calculate the actual AD voltage value V and the Nth floor AD voltage value V respectively N and N-1F AD voltage value V N-1 Send to the elevator control system;

[0031] S25: The elevator control system determines when the elevator car door can be safely opened according to the elevator car door opening and turning judgment logic, and calculates the distance and direction that the turning gear needs to move. The display module displays whether the elevator car door can be opened directly, and if turning gear is required, displays the current distance that needs to be turned up or down;

[0032] Specifically, when the leveling height is less than the AD voltage value V in the resistance adjustment module S , then the elevator car can be opened for rescue;

[0033] When the leveling height is greater than the AD voltage value V in the resistance adjustment module S , then rescue is needed.

[0034] Further defined, the elevator car door opening and turning judgment logic is as follows:

[0035] Set the rescue safety door opening height to H s , set the AD voltage value in the resistance adjustment module to V S ,

[0036] When the elevator car is at the highest floor: When (VH s )>V s When the car is in the state of emergency, turn the car downwards, otherwise, open the door safely;

[0037] When the elevator car is at the bottom floor: When (V1-V)>V s When the car is in the state of emergency, turn the car upwards, otherwise, open the door safely;

[0038] When the elevator car is on the Nth floor: When V N >V s When the car is in the state of emergency, turn the car upwards, otherwise, open the door safely;

[0039] When the elevator car is on the Nth floor: When V N >V s When the car is in the state of emergency, turn the car upwards, otherwise, open the door safely;

[0040] When the elevator car is at floor N-1: When V N-1 >V s If the car is in the wrong position, turn the car downwards, otherwise, open the door safely.

[0041] Beneficial effects of the present invention:

[0042] The present invention provides a method and device for confirming and displaying the position of an elevator car. The method and device are provided with an elevator control system, an elevator car and an external call device. The external call device is composed of a processor module, a communication module, an elevator call module, a sampling module, a resistance adjustment module, a display module, a power supply module and a resistance voltage divider module. The power supply module detects the working condition of the working power supply. If an abnormality occurs, the backup power supply is automatically switched to supply power. At the same time, the external call device enters a rescue auxiliary mode. The external call device calculates the position of the elevator car through a formula by maintaining an AD voltage value table of each floor, and displays the number of floors in real time on the display module, so that rescue personnel can quickly and accurately locate the position of the elevator car for rescue. The elevator car door opening and turning judgment logic are also used to determine when turning rescue is required. At the same time, when turning rescue is required, it is faster to turn the car to the upper floor or the lower floor. The scheme is conducive to accurately locating the position of the elevator car and performing rapid rescue. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] The present invention can be further illustrated by the non-limiting examples given in the accompanying drawings;

[0044] Figure 1 A self-learning workflow diagram of a hall call device in an embodiment of an elevator car position confirmation and display method and device of the present invention;

[0045] Figure 2 It is a working diagram of a hall call device of an embodiment of an elevator car position confirmation and display method and device of the present invention;

[0046] Figure 3 It is a working diagram of a hall call device of an embodiment of an elevator car position confirmation and display method and device of the present invention;

[0047] Figure 4 A system structure diagram of an embodiment of an elevator car position confirmation and display method and device of the present invention;

[0048] Figure 5 A system module diagram of an embodiment of an elevator car position confirmation and display method and device of the present invention;

[0049] Figure 6 The present invention provides a door zone distance diagram of an elevator car position confirmation and display method and device embodiment. DETAILED DESCRIPTION

[0050] In order to enable those skilled in the art to better understand the present invention, the technical solution of the present invention is further described below in conjunction with the accompanying drawings and embodiments. The technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings 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 the field without creative work are within the scope of protection of the present invention.

[0051] 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.

[0052] In addition, the descriptions of "first", "second", etc. in the present invention are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. 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. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0053] like Figure 4 , Figure 5 and Figure 6 As shown, a method and device for confirming and displaying the position of an elevator car of the present invention include an elevator control system, an elevator car and an external call device, wherein the external call device includes a processor module, a communication module, an elevator calling module, a sampling module, a resistance adjustment module, a display module and a power supply module, wherein the communication module, the elevator calling module, the sampling module, the power supply module and the display module are respectively connected to the processor module, the resistance adjustment module is connected to the sampling module, the sampling module is used to sample the resistance adjustment module in real time, and send the sampled data to the processor module, and the processor module calculates the corresponding floor position.

[0054] Specifically, the hall call device of this embodiment is different from the traditional hall call device. Only one hall call device can be installed in one elevator, and can be installed on a public floor, such as the lobby on the first floor or a public parking lot floor.

[0055] In the actual application of this embodiment, it also includes a working power supply and a backup power supply. The power supply module is connected to the working power supply and the backup power supply respectively. The backup power supply is used to supply power to the external device when the elevator is abnormally powered off. The power supply module is used to detect the working condition of the working power supply. If an abnormality occurs, the backup power supply is automatically switched to supply power.

[0056] In the actual application of this embodiment, the hall call device is integrated with a resistance voltage divider module, and the resistance voltage divider module is set in the shaft of the elevator car. Specifically, during the up and down movement of the elevator, the resistance voltage divider module can drive the control resistor to adjust the resistance, and the AD sampling module samples the resistance adjustment module in real time, and calculates and compares the sampled data to obtain the corresponding floor position.

[0057] like Figure 1 As shown, a method for confirming and displaying the position of an elevator car includes a self-learning step of an external call device:

[0058] S1: Self-learning floor height mode, the elevator control system controls the hall call device to enter the self-learning floor height mode;

[0059] S2: The elevator runs from bottom to top or from top to bottom, and the sampling module of the hall call device samples the AD voltage value of each floor, stores the sampled data in the local storage unit, and generates an AD value table.

[0060] In the actual application of this embodiment, the AD voltage value of each floor is recorded in the form of V1 for the 1st floor, V2 for the 2nd floor, V for the N-1st floor, and V N-1 、N floor is denoted as V N .

[0061] In the practical application of this embodiment, the working process of the hall call device in the case of abnormal power supply of the elevator and people trapped in the elevator is also included, specifically:

[0062] like Figure 2 As shown, S10: when the external call device detects that the working power supply is abnormally powered off through the power module, it switches to the backup power supply for power supply and enters the rescue auxiliary mode;

[0063] S11: The hall call device collects the current AD voltage value through the sampling module, and measures the actual AD voltage value, which is recorded as V;

[0064] S12: Compare the actual AD voltage value with the local AD value table, calculate the actual floor of the current elevator car, and display it through the display module;

[0065] Specifically, the position deviation caused by wire rope slippage due to emergency stop of the elevator due to power failure and abnormal movement of the elevator car will also be measured.

[0066] S13: When the power module of the hall call device detects that the working power returns to normal, it automatically switches to the normal working mode;

[0067] S14: The hall call device transmits the actual AD voltage value V and the Nth floor AD voltage value V through the communication module. N and N-1F AD voltage value V N-1 Send to the elevator control system;

[0068] S15: The elevator control system sets V and V according to the car position judgment logic. N and V N-1 The value is compared with the value of the elevator, and then the elevator car is controlled to run for self-rescue, run to the nearest floor and open the elevator car door automatically. At the same time, the external call device returns to normal mode and displays the floor value of the elevator operation.

[0069] In the practical application of this embodiment, the car position judgment logic in S15 is as follows:

[0070] V N-1 =V–V N-1 and V N =V N –V

[0071] When V ≥ V N When V≤V1, the elevator car is at the bottom floor.

[0072] When V N-1 >V N When the car is located at floor N, when V N-1 ≤V N When , the car is located at the N-1 floor.

[0073] In the practical application of this embodiment, when the elevator is abnormal or the power supply is abnormal and cannot be restored and people are trapped in the elevator and need manual rescue, the working process of the hall call device is as follows:

[0074] like Figure 3 As shown, S21: when the hall call device detects that the working power supply is abnormally powered off through the power module, it switches to the backup power supply for power supply and enters the rescue auxiliary mode;

[0075] S22: The hall call device collects the current AD voltage value through the sampling module, and measures the actual AD voltage value, which is recorded as V;

[0076] S23: Compare the actual AD voltage value with the local AD value table, calculate the actual floor of the current elevator car, and display it through the display module;

[0077] S24: Calculate the actual AD voltage value V and the Nth floor AD voltage value V respectively N and N-1F AD voltage value V N-1 Send to the elevator control system;

[0078] S25: The elevator control system determines when the elevator car door can be safely opened according to the elevator car door opening and turning judgment logic, and calculates the distance and direction that the turning gear needs to move. The display module displays whether the elevator car door can be opened directly, and if turning gear is required, displays the current distance that needs to be turned up or down;

[0079] Specifically, when the leveling height is less than the AD voltage value V in the resistance adjustment module S , then the elevator car can be opened for rescue;

[0080] When the leveling height is greater than the AD voltage value V in the resistance adjustment module S , then rescue is needed.

[0081] Therefore, when an elevator breaks down or a power outage occurs, if there are people trapped in the elevator and they need rescue, the rescuers can directly obtain useful information from the external call device, such as the current floor position of the elevator car and whether it is safe to open the hall door at that floor position; and when the door cannot be opened directly, whether the elevator should turn up or down to reach the leveling area the fastest.

[0082] In the actual application of this embodiment, the elevator car door opening and turning judgment logic is as follows:

[0083] Set the rescue safety door opening height to H s , set the AD voltage value in the resistance adjustment module to V S Usually, during rescue, the elevator car should be 300mm above or below the level position before the lobby can be opened directly to rescue the trapped people. Otherwise, it is necessary to turn the car to the level position for rescue.

[0084] When the elevator car is at the highest floor: When (VH s )>V s When the car is in the state of emergency, turn the car downwards, otherwise, open the door safely;

[0085] When the elevator car is at the bottom floor: When (V1-V)>V s When the car is in the state of emergency, turn the car upwards, otherwise, open the door safely;

[0086] When the elevator car is on the Nth floor: When V N >V s When the car is in the state of emergency, turn the car upwards, otherwise, open the door safely;

[0087] When the elevator car is on the Nth floor: When V N >V sWhen the car is in the state of emergency, turn the car upwards, otherwise, open the door safely;

[0088] When the elevator car is at floor N-1: When V N-1 >V s If the car is in the wrong position, turn the car downwards, otherwise, open the door safely.

[0089] The working process of this implementation is as follows:

[0090] 1. After the elevator is installed, it needs to self-learn the floor height. When the elevator enters the self-learning mode, the elevator control system uses the elevator communication to let the external call device enter the self-learning floor height mode and set the AD voltage value V of all floors. N All are recorded in local storage. As shown in the following table:

[0091] floor 1st floor 2nd Floor …… N-1 Floor N Building AD voltage value V1 V2 …… VN-1 VN

[0092] 2. The communication power module of the hall call device detects the working power supply. Once the working power is off, it is possible that the elevator is faulty or there is a power outage. In this case, it will automatically switch to the backup power supply and the hall call will enter the rescue auxiliary module.

[0093] 3. The external call device determines the position of the elevator car through calculation according to the saved floor AD voltage value table and displays the floor number on the external call device, so that rescue personnel can quickly and accurately locate the elevator car position for rescue.

[0094] 4. According to the calculation results V N-1 With V N By comparison, it can be concluded whether rescue is needed. At the same time, when rescue is needed, it can be determined whether it is faster to go up one floor or down one floor.

[0095] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the technology may modify or change the above embodiments without violating the spirit and scope of the present invention. Therefore, all equivalent modifications or changes made by those with ordinary knowledge in the technical field without departing from the spirit and technical ideas disclosed by the present invention should still be covered by the claims of the present invention.

Claims

1. A device for confirming and displaying the position of an elevator car, characterized in that: It includes an elevator control system, an elevator car and an external call device, the external call device includes a processor module, a communication module, an elevator calling module, a sampling module, a resistance adjustment module, a display module and a power supply module, the communication module, the elevator calling module, the sampling module, the power supply module and the display module are respectively connected to the processor module, the resistance adjustment module is connected to the sampling module, the sampling module is used to sample the resistance adjustment module in real time, and send the sampled data to the processor module, and the processor module calculates the corresponding floor position.

2. The device for confirming and displaying the position of an elevator car according to claim 1, characterized in that: It also includes a working power supply and a backup power supply. The power supply module is connected to the working power supply and the backup power supply respectively. The backup power supply is used to supply power to the external device when the elevator is abnormally powered off. The power supply module is used to detect the working condition of the working power supply. If an abnormality occurs, the backup power supply is automatically switched to supply power.

3. The device for confirming and displaying the position of an elevator car according to claim 1, characterized in that: The hall call device is integrated with a resistance voltage divider module, and the resistance voltage divider module is arranged in the hoistway of the elevator car.

4. A method for confirming and displaying the position of an elevator car, characterized in that: Including the self-learning steps of external devices: S1: Self-learning floor height mode, the elevator control system controls the hall call device to enter the self-learning floor height mode; S2: The elevator runs from bottom to top or from top to bottom, and the sampling module of the hall call device samples the AD voltage value of each floor, stores the sampled data in the local storage unit, and generates an AD value table.

5. A method for confirming and displaying the position of an elevator car according to claim 4, characterized in that: The AD voltage value of each floor is recorded in the form of V1 for the 1st floor, V2 for the 2nd floor, and V for the N-1st floor. N-1 、N floor is denoted as V N .

6. A method for confirming and displaying the position of an elevator car according to claim 5, characterized in that: It also includes the working process of the hall call device when the elevator power supply is abnormal and people are trapped in the elevator, specifically: S10: When the hall call device detects abnormal power failure of the working power supply through the power module, it switches to the backup power supply for power supply and enters the rescue auxiliary mode; S11: The hall call device collects the current AD voltage value through the sampling module, and measures the actual AD voltage value, which is recorded as V; S12: Compare the actual AD voltage value with the local AD value table, calculate the actual floor of the current elevator car, and display it through the display module; S13: When the power module of the hall call device detects that the working power returns to normal, it automatically switches to the normal working mode; S14: The hall call device transmits the actual AD voltage value V and the Nth floor AD voltage value V through the communication module. N and N-1F AD voltage value V N-1 Send to the elevator control system; S15: The elevator control system sets V and V according to the car position judgment logic. N and V N-1 The value is compared with the value of the elevator, and then the elevator car is controlled to run for self-rescue, run to the nearest floor and open the elevator car door automatically. At the same time, the external call device returns to normal mode and displays the floor value of the elevator operation.

7. A method for confirming and displaying the position of an elevator car according to claim 6, characterized in that: The car position determination logic in S15 is as follows: V N-1 =V–V N-1 and V N =V N –V When V ≥ V N When V≤V1, the elevator car is at the bottom floor. When V N-1 >V N When the car is located at floor N, when V N-1 ≤V N When , the car is located at the N-1 floor.

8. The method for confirming and displaying the position of an elevator car according to claim 5, characterized in that: It also includes the following process when the elevator is abnormal or the power supply is abnormal and cannot be restored and people are trapped in the elevator and need manual rescue: S21: When the hall call device detects abnormal power failure of the working power supply through the power module, it switches to the backup power supply for power supply and enters the rescue auxiliary mode; S22: The hall call device collects the current AD voltage value through the sampling module, and measures the actual AD voltage value, which is recorded as V; S23: Compare the actual AD voltage value with the local AD value table, calculate the actual floor of the current elevator car, and display it through the display module; S24: Calculate the actual AD voltage value V and the Nth floor AD voltage value V respectively N and N-1F AD voltage value V N-1 Send to the elevator control system; S25: The elevator control system determines when the elevator car door can be safely opened according to the elevator car door opening and turning judgment logic, and calculates the distance and direction that the turning gear needs to move. The display module displays whether the elevator car door can be opened directly, and if turning gear is required, displays the current distance that needs to be turned up or down; Specifically, when the leveling height is less than the AD voltage value V in the resistance adjustment module S , then the elevator car can be opened for rescue; When the leveling height is greater than the AD voltage value V in the resistance adjustment module S , then rescue is needed.

9. A method for confirming and displaying the position of an elevator car according to claim 8, characterized in that: The elevator car door opening and turning judgment logic is as follows: Set the rescue safety door opening height to H s , set the AD voltage value in the resistance adjustment module to V S , When the elevator car is at the highest floor: When (VH s )>V s When the car is in the state of emergency, turn the car downwards, otherwise, open the door safely; When the elevator car is at the bottom floor: When (V1-V)>V s When the car is in the state of emergency, turn the car upwards, otherwise, open the door safely; When the elevator car is on the Nth floor: When V N >V s When the car is in the state of emergency, turn the car upwards, otherwise, open the door safely; When the elevator car is on the Nth floor: When V N >V s When the car is in the state of emergency, turn the car upwards, otherwise, open the door safely; When the elevator car is at floor N-1: When V N-1 >V s If the car is in the wrong position, turn the car downwards, otherwise, open the door safely.

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