Elevator group maintenance door opening method and device, smart key, and storage medium

Abstract

The application discloses an elevator group maintenance door opening method and device, an intelligent key and a storage medium. When the intelligent key is inserted into the door lock of a hall door, an elevator identification signal is received. A first elevator number of the hall door is determined according to the elevator identification signal. When the car data of the car is received, the car altitude and a second elevator number of the car to which the car belongs are determined from the car data. When the first elevator number is the same as the second elevator number, the key altitude is obtained through the first height sensor. Whether the floor where the hall door is located is a safe floor is determined according to the car altitude and the key altitude. If not, the alarm module on the intelligent key is controlled to alarm. In the maintenance scene of the elevator group multi-lift, the intelligent key can identify the elevator number of the hall door, so as to determine the car data of the elevator with the same elevator number, avoid the risk of car position misjudgment caused by the failure to identify the elevator number, and improve the accuracy of the car position detection through the height sensor.

Description

Technical Field

[0001] This invention relates to the field of elevator maintenance technology, and in particular to a method, device, smart key, and storage medium for opening doors during elevator group maintenance. Background Technology

[0002] Elevator maintenance personnel often need to use smart keys to open elevator hall doors, such as when an elevator malfunctions, to open the hall door with a smart triangular key to enter the car for rescue, or during routine maintenance, to open the hall door to enter the top of the elevator car in the elevator shaft.

[0003] In order to effectively detect the location of the elevator car when there is an elevator malfunction, and to prevent maintenance personnel from losing their center of gravity and falling into the shaft when opening the elevator hall door without confirming whether the car is on the current floor or the next floor, the existing technology uses wireless communication modules on both the car and the smart key to detect the car's position. The position of the car relative to the smart key is determined by measuring the distance through the wireless communication module.

[0004] However, for ease of maintenance, maintenance personnel typically use a single smart key to open the landing doors of different elevators. In elevator group maintenance scenarios, when the smart key receives a wireless signal from the car, it cannot determine whether the elevator to which the car belongs is the same elevator as the one to which the currently inserted landing door belongs. There is a risk of misidentifying the car of an adjacent elevator as the car of the elevator to which the currently inserted landing door belongs, leading to misjudgment of the car's position. In addition, the car is located in the enclosed metal environment of the elevator shaft, where many factors affect the strength of the wireless signal, resulting in low accuracy in detecting the car's position. Summary of the Invention

[0005] This invention provides a method, device, smart key, and storage medium for elevator group maintenance and opening, in order to solve the problems in the prior art where the smart key cannot recognize the elevator number in the elevator group, resulting in misjudgment of the car position and low detection accuracy.

[0006] In a first aspect, the present invention provides a method for opening elevator group doors during maintenance. A smart key is equipped with a first height sensor and a first wireless communication module. Each elevator in the elevator group has a second height sensor and a second wireless communication module installed on its car. The second wireless communication module is used to broadcast the car's altitude collected by the second height sensor on the car, including:

[0007] When the smart key is inserted into the door lock of the hall door, the elevator identification signal is received from the door lock, and the first elevator number of the elevator to which the hall door belongs is determined based on the elevator identification signal;

[0008] When the car data of the car is received from the second wireless communication module through the first wireless communication module, the car altitude and the second elevator number of the elevator to which the car belongs are determined from the car data;

[0009] Determine whether the first elevator number and the second elevator number are the same;

[0010] When the first elevator number is the same as the second elevator number, the key altitude of the smart key is obtained through the first height sensor;

[0011] Determine whether the floor where the hall door is located is a safe floor based on the altitude of the elevator car and the altitude of the key.

[0012] If not, control the alarm module on the smart key to sound an alarm.

[0013] Secondly, the present invention provides an elevator group maintenance door opening device, wherein a first height sensor and a first wireless communication module are installed on the smart key, and a second height sensor and a second wireless communication module are installed on the car of each elevator in the elevator group. The second wireless communication module is used to broadcast the car's altitude collected by the second height sensor on the car, including:

[0014] The first elevator number determination module is used to receive an elevator identification signal from the door lock when the smart key is inserted into the door lock of the hall door, and determine the first elevator number of the elevator to which the hall door belongs based on the elevator identification signal;

[0015] The car altitude and second elevator number determination module is used to determine the car altitude and the second elevator number of the elevator to which the car belongs from the car data received from the second wireless communication module through the first wireless communication module.

[0016] The elevator number determination module is used to determine whether the first elevator number and the second elevator number are the same;

[0017] The key altitude determination module is used to obtain the key altitude of the smart key through the first altitude sensor;

[0018] The safe floor determination module is used to determine whether the floor where the hall door is located is a safe floor based on the car's altitude and the key's altitude.

[0019] An alarm control module is used to control the alarm module on the smart key to trigger an alarm.

[0020] Thirdly, the present invention provides a smart key, the smart key comprising:

[0021] At least one processor; and

[0022] The system includes a wireless communication module, a height sensor, and a memory that are communicatively connected to the at least one processor. The memory stores a computer program that can be executed by the at least one processor, and the computer program is executed by the at least one processor to enable the at least one processor to perform the elevator group maintenance and door opening method described in the first aspect of the present invention.

[0023] Fourthly, the present invention provides a computer-readable storage medium storing computer instructions that, when executed by a processor, implement the elevator group maintenance and door opening method described in the first aspect of the present invention.

[0024] The smart key in this embodiment of the invention is equipped with a first wireless communication module and a first height sensor. Each elevator in the elevator group is equipped with a second wireless communication module and a second height sensor in its car. When the smart key is inserted into the door lock of the landing door, it receives an elevator identification signal and identifies the first elevator number of the elevator to which the landing door belongs based on the elevator identification signal. It determines the car's altitude and the second elevator number of the elevator to which the car belongs based on car data sent by the second wireless communication module on the car. If the first elevator number and the second elevator number are the same, it determines whether the floor where the landing door is located is a safe floor based on the car's altitude and the key's altitude. If not, it controls the smart key... The alarm module enables the smart key to identify the elevator number of the elevator to which the hall door belongs in maintenance scenarios with multiple elevators connected in parallel in an elevator group. It can also filter out the car height of elevators with the same elevator number from the received car data. This solves the problem of existing smart keys being unable to identify the elevator number in an elevator group, which leads to misjudgment of the car position. It can accurately determine the car position of the elevator to which the smart key is inserted in the hall door, so as to issue an alarm when the floor where the hall door is located is not a safe floor, thus ensuring the safety of maintenance personnel. In addition, the height sensor is used to determine the height of the car and the height of the smart key more accurately, which improves the accuracy of whether the floor where the hall door is located is a safe floor.

[0025] It should be understood that the description in this section is not intended to identify key or essential features of the embodiments of the present invention, nor is it intended to limit the scope of the invention. Other features of the invention will become readily apparent from the following description. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 This is a schematic diagram of an elevator group maintenance scenario;

[0028] Figure 2 This is a flowchart of an elevator group maintenance and door opening method provided in Embodiment 1 of the present invention;

[0029] Figure 3A This is a flowchart of an elevator group maintenance and door opening method provided in Embodiment 2 of the present invention;

[0030] Figure 3B This is a schematic diagram of an electrical circuit formed between the door lock and the smart key when the door lock is equipped with an adjustable resistor in an embodiment of the present invention;

[0031] Figure 3C This is a schematic diagram showing the position of the height sensor on the car in an embodiment of the present invention;

[0032] Figure 3D This is a schematic diagram of the first difference in an embodiment of the present invention;

[0033] Figure 3E This is a schematic diagram of the second difference in an embodiment of the present invention;

[0034] Figure 3F This is a schematic diagram of the elevator car position detection system in an embodiment of the present invention;

[0035] Figure 4 This is a structural block diagram of an elevator group maintenance door opening device provided in Embodiment 3 of the present invention;

[0036] Figure 5 This is a structural block diagram of the smart key provided in Embodiment 4 of the present invention. Detailed Implementation

[0037] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.

[0038] like Figure 1 The elevator group shown includes elevators #1, #2, #3, and #4. Each elevator car in the group is equipped with a wireless communication module, and smart key A is also equipped with a wireless communication module. Smart key A determines the position of the elevator car by the strength of the wireless signal when communicating with the wireless communication module on the car. Figure 1In the process, smart key A needs to open the hall door of elevator #2. It can receive the wireless signal from the wireless communication module on the car B2 of elevator #2 and determine the position of car B2 relative to the smart key based on the strength of the wireless signal, thereby judging whether there is a risk of falling into the elevator shaft of elevator #2 when opening the hall door of elevator #2.

[0039] However, for ease of maintenance, smart key A can open the hall doors of each elevator in the elevator group, such as... Figure 1 As shown, after smart key A is inserted into the landing door of elevator #2 on a certain floor, it can receive wireless signals from elevator car B1 of #1, elevator car B2 of #2, elevator car B3 of #3, and elevator car B4 of #4. Since smart key A cannot identify elevators within the elevator group, when it is inserted into the landing door of elevator #2, if the adjacent elevator car B3 of #3 is on the same floor, smart key A will receive the wireless signal from car B3 and determine that a car is on the same floor as smart key A. If smart key A mistakenly identifies elevator car B3 of #3 as a car of elevator #2, it will allow smart key A to open the landing door of elevator #2 without triggering an alarm. However, in reality, elevator car B2 of #2 is on a floor above smart key A. If maintenance personnel open the landing door of elevator #2 at this time, they risk falling into the elevator shaft.

[0040] To address the aforementioned issues, the elevator group maintenance and door opening method provided by the embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0041] Example 1

[0042] Figure 2 This is a flowchart of an elevator group maintenance door opening method provided in Embodiment 1 of the present invention. This embodiment is applicable to situations where it is necessary to determine whether the current floor is a safe floor during elevator group maintenance. This method can be executed by an elevator group maintenance door opening device, which can be implemented in hardware and / or software, and can be configured in a smart key. Figure 2 As shown, the elevator group's maintenance and door opening methods include:

[0043] S101. When the smart key is inserted into the door lock of the hall door, the elevator identification signal is received from the door lock, and the first elevator number of the elevator to which the hall door belongs is determined according to the elevator identification signal.

[0044] This embodiment is applied to the maintenance of an elevator group consisting of multiple elevators, in a scenario where it is safe to use a smart key to open the landing door of any elevator in the group. The smart key is equipped with a first height sensor and a first wireless communication module. Each elevator in the group is equipped with a second height sensor and a second wireless communication module. The second wireless communication module is used to broadcast the car's altitude collected by the second height sensor on the car. The first height sensor and the second height sensor can be barometric altitude sensors.

[0045] To ensure that the reference of the first altitude sensor and the second altitude sensor is consistent, the first altitude sensor and the second altitude sensor can be calibrated in the same environment (same indoor air pressure, same altitude, same temperature and humidity), and the calibration data after calibration is stored in the sensor's memory (PROM). When the first altitude sensor and the second altitude sensor are working, the program reads the collected atmospheric pressure and temperature values, and then uses the calibration data to compensate and reduce the error.

[0046] During maintenance, maintenance personnel insert a smart key into the door lock of the elevator hall door that needs maintenance. The smart key can receive an elevator identification signal from the door lock to determine the first elevator number of the elevator to which the hall door belongs. The elevator identification signal is related to the way the elevator number is encoded in the door lock. Those skilled in the art can encode the elevator number using different encoding methods, so the way to determine the first elevator number of the elevator to which the hall door belongs is also different. This embodiment does not limit this.

[0047] S102. When the car data of the car is received from the second wireless communication module through the first wireless communication module, the car altitude and the second elevator number of the elevator to which the car belongs are determined from the car data.

[0048] In this embodiment, after the smart key is inserted into the door lock of the hall, the first wireless communication module on the smart key is activated, enabling the first wireless communication module to communicate with the second wireless communication modules on the cars of each elevator in the elevator group. Thus, car data can be received from the second wireless communication module that enters the wireless communication range of the first wireless communication module. The car data includes the car's altitude and the second elevator number of the elevator to which the car belongs.

[0049] If the first wireless communication module is not connected to any second wireless communication module, then the floor where the current hall door is located is determined to be a non-safe floor, and S106 can be executed.

[0050] S103. Determine whether the first elevator number and the second elevator number are the same.

[0051] Specifically, in order to determine the car altitude of the elevator to which the current hall door belongs, the first elevator number and the second elevator number can be compared. If the first elevator number and the second elevator number are the same, then S104 is executed. If the first elevator number and the second elevator number are different, then the received data is discarded.

[0052] S104. Obtain the altitude of the smart key through the first altitude sensor.

[0053] Specifically, when the first wireless communication module on the smart key receives the car altitude of the elevator to which the current hall door belongs, it activates the first altitude sensor of the smart key to collect the altitude of the smart key.

[0054] S105. Determine whether the floor where the hall door is located is a safe floor based on the car's altitude and the key's altitude.

[0055] Specifically, the position of the car relative to the smart key can be determined by the car's altitude and the key's altitude. For example, the car's height data and key's height data can determine whether the car is above or below the current landing door. When the car is above the current landing door, the difference between the car's height and the smart key's height is further calculated. If the difference is greater than a threshold, the current landing door's floor is determined to be a non-safe floor, and S106 is executed; otherwise, the current landing door's floor is determined to be a safe floor, and the smart key does not issue an alarm. Similarly, when the car is below the current landing door, the difference between the smart key's height and the car's height is further calculated. If the difference is greater than a threshold, the current landing door's floor is determined to be a non-safe floor, and S106 is executed; otherwise, the current landing door's floor is determined to be a safe floor, and the smart key does not issue an alarm.

[0056] S106, alarm on the alarm module of the control smart key.

[0057] In this embodiment, the alarm module is installed on the smart key. The alarm module can be at least one of the following: indicator light, speaker, and vibration motor. When the floor where the lobby door is located is a non-safe floor, the alarm module on the smart key can be controlled to issue an alarm with at least one of the following: sound, indicator light, and voice prompt, to remind maintenance personnel that there is a risk of falling into the shaft when opening the lobby door.

[0058] The smart key in this embodiment of the invention is equipped with a first wireless communication module and a first height sensor. Each elevator in the elevator group is equipped with a second wireless communication module and a second height sensor in its car. When the smart key is inserted into the door lock of the landing door, it receives an elevator identification signal and identifies the first elevator number of the elevator to which the landing door belongs based on the elevator identification signal. It determines the car's altitude and the second elevator number of the elevator to which the car belongs based on car data sent by the second wireless communication module on the car. If the first elevator number and the second elevator number are the same, it determines whether the floor where the landing door is located is a safe floor based on the car's altitude and the key's altitude. If not, it controls the smart key... The alarm module enables the smart key to identify the elevator number of the elevator to which the hall door belongs in maintenance scenarios with multiple elevators connected in parallel in an elevator group. It can also filter out the car height of elevators with the same elevator number from the received car data. This solves the problem of existing smart keys being unable to identify the elevator number in an elevator group, which leads to misjudgment of the car position. It can accurately determine the car position of the elevator to which the smart key is inserted in the hall door, so as to issue an alarm when the floor where the hall door is located is not a safe floor, thus ensuring the safety of maintenance personnel. In addition, the height sensor is used to determine the height of the car and the height of the smart key more accurately, which improves the accuracy of whether the floor where the hall door is located is a safe floor.

[0059] Example 2

[0060] Figure 3A This is a flowchart of an elevator group maintenance door opening method provided in Embodiment 2 of the present invention. This embodiment of the present invention is an optimization based on Embodiment 1 described above, such as... Figure 3A As shown, the elevator group's maintenance and door opening methods include:

[0061] S201. When the smart key is inserted into the door lock of the hall door, the elevator identification signal is received from the door lock, and the first elevator number of the elevator to which the hall door belongs is determined according to the elevator identification signal.

[0062] In this embodiment, the door lock can be equipped with a module that encodes the elevator number of the elevator to which the hall door belongs. When the smart key is inserted into the door lock, the module can output an elevator identification signal to the smart key. This elevator identification signal is used to uniquely identify the elevator number of the elevator to which the hall door belongs. The signal characteristics of the elevator identification signal can be extracted, and the first elevator number of the elevator to which the hall door belongs can be determined based on the signal characteristics.

[0063] like Figure 3BAs shown in the example, the door lock can be equipped with an adjustable resistor R. Different resistance values ​​represent different elevator numbers. For example, a resistance value of 100Ω represents elevator #1, 200Ω represents elevator #2, 300Ω represents elevator #3, and so on. When the smart key is inserted into the door lock, the internal circuit of the smart key and the adjustable resistor R form an electrical circuit. The voltage signal output across the adjustable resistor R is the elevator identification signal. The smart key can then determine the voltage of the elevator identification signal, identify the target resistance corresponding to the voltage in a preset voltage-resistance lookup table as the signal characteristic of the elevator identification signal, and identify the elevator number corresponding to the target resistance in a resistance-elevator number lookup table to obtain the first elevator number.

[0064] Of course, you can also use a DIP switch, infrared tube, or other means to replace the adjustable resistor R, and then use the corresponding identification method to identify the first elevator number of the elevator to which the hall door belongs.

[0065] In another embodiment, an electronic tag identifying the elevator number of the hall door can be installed on the door lock, and a card reader can be installed on the smart key. When the smart key is inserted into the door lock, the card reader on the smart key reads the electronic tag on the door lock to obtain the elevator identification signal. The card reader parses the elevator identification signal to obtain the first elevator number of the hall door. For example, the electronic tag can be placed near the door lock, and the elevator number is written in the electronic tag, so that the smart key can read the first elevator number.

[0066] S202. If no car data is received from the car via the second wireless communication module through the first wireless communication module within a preset time period, the floor where the hall door is located is determined to be a non-safe floor.

[0067] In this embodiment, the first wireless communication module on the smart key is in a sleep or off state by default. When the smart key is inserted into the door lock, the first wireless communication module is activated. If the cars of each elevator in the elevator group are within the communication range of the first wireless communication module, the first wireless communication module communicates with the second wireless communication module on the car and receives the car data from the second wireless communication module. If no car data is received within a preset time, it is determined that the cars of all elevators in the elevator group are outside the communication range of the first wireless communication module and are far from the smart key. Therefore, it can be determined that the floor where the current hall door is located is a non-safe floor, and S214 can be executed.

[0068] S203. When the car data of the car is received from the second wireless communication module through the first wireless communication module, the car altitude and the second elevator number of the elevator to which the car belongs are determined from the car data.

[0069] In this embodiment, the second height sensor on the car collects the car's altitude and sends it to the second wireless communication module. After adding the second elevator number of the elevator to which the car belongs, the second wireless communication module sends the second elevator number and the car's altitude as car data to the first wireless communication module of the smart key. When the first wireless communication module receives the car data from the second wireless communication module, it determines that a car in the elevator group has entered the wireless communication range of the smart key, and can determine the car's altitude and the second elevator number of the elevator to which the car belongs from the car data.

[0070] S204. Determine whether the first elevator number and the second elevator number are the same.

[0071] Specifically, in order to determine the car altitude of the elevator to which the current hall door belongs, the first elevator number and the second elevator number can be compared. If the first elevator number and the second elevator number are the same, then S205-S212 are executed; if the first elevator number and the second elevator number are different, then S213 is executed.

[0072] S205. Obtain the altitude of the smart key through the first altitude sensor.

[0073] In this embodiment, the first height sensor in the smart key is in a default off or sleep state. If the first elevator number and the second elevator number are the same, it is determined that the smart key has received the car altitude of the elevator to which the hall door of the inserted door belongs. The smart key then activates the first height sensor to collect the key altitude of the smart key.

[0074] S206. Determine whether the car's altitude is greater than the key's altitude.

[0075] Specifically, the car's altitude can be compared with the key's altitude. If the car's altitude is greater than the key's altitude, execute S207-209. If the car's altitude is less than the key's altitude, execute S210-212. If the car's altitude is equal to the key's altitude, determine the floor where the smart key is inserted into the hall door as the safe floor.

[0076] S207. Calculate the first difference between the car's altitude and the key's altitude.

[0077] like Figure 3C As shown, when the threshold of car B and the threshold of hall door C are aligned at the same altitude, the first height sensor A1 is at the same horizontal position when the second height sensor B1 on car B and the smart key A are inserted into the door lock of hall door C.

[0078] like Figure 3DAs shown, when the car's altitude is greater than the key's altitude, the first difference H1 between the car's altitude and the key's altitude is calculated. The first difference H1 is as follows: Figure 3D As shown.

[0079] S208. When the first difference is less than the first threshold, determine that the floor where the smart key is inserted is a safe floor.

[0080] like Figure 3D As shown, if the first difference H1 is less than the first threshold, it is determined that the gap between the threshold B2 of the car B and the threshold C1 of the hall door is small, which can ensure that maintenance personnel cannot fall into the shaft from the gap. Then, the floor where the hall door where the smart key is inserted is determined to be a safe floor. The smart key will not alarm, and the maintenance personnel can open the hall door and enter the car.

[0081] S209. When the first difference is greater than or equal to the first threshold, determine that the floor where the smart key is inserted is a non-secure floor.

[0082] like Figure 3D As shown, if the first difference H1 is greater than or equal to the first threshold, it is determined that the gap between the threshold B2 of the car B and the threshold C1 of the hall door is large, and there is a risk that maintenance personnel will fall into the shaft through the gap after opening the hall door. Therefore, it is determined that the floor where the hall door where the smart key is inserted is a non-safe floor, and S214 can be executed.

[0083] S210, Calculate the second difference between the key elevation and the car elevation.

[0084] like Figure 3E As shown, when the key's altitude is greater than the car's altitude, the first difference H2 between the key's altitude and the car's altitude is calculated. The first difference H2 is as follows: Figure 3E As shown.

[0085] S211. When the second difference is less than the second threshold, determine that the floor where the smart key is inserted is a safe floor.

[0086] like Figure 3E As shown, if the second difference H2 is less than the first threshold, it is determined that the distance between the top of the car B and the threshold of the hall door is small, which can ensure that maintenance personnel can safely descend from the hall door to the top of the car B. Then, the floor where the hall door where the smart key is inserted is determined to be a safe floor, the smart key has no alarm, and the maintenance personnel can open the hall door and descend to the top of the car.

[0087] S212. When the second difference is greater than or equal to the second threshold, determine that the floor where the smart key is inserted is a non-secure floor.

[0088] like Figure 3EAs shown, if the second difference H2 is greater than or equal to the first threshold, it is determined that the distance between the top of the car B and the threshold of the hall door is large, and there is a risk of injury or falling into the well for maintenance personnel descending from the hall door to the top of the car B. Then, it is determined that the floor where the hall door where the smart key is inserted is a non-safe floor, and S214 can be executed.

[0089] S213. When the first elevator number and the second elevator number are different, discard the car data and determine that the floor where the hall door is located is a non-safe floor.

[0090] When the first elevator number is different from the second elevator number, the smart key can determine that the received car data is not the data of the car of the elevator to which the current hall door belongs. It can discard the car data without processing it, indicating that the car of the elevator to which the current hall door belongs is far away from the smart key and the current hall door is on a non-safe floor. S214 can be executed.

[0091] S214, alarm on the alarm module of the control smart key.

[0092] In this embodiment, the alarm module is installed on the smart key. The alarm module can be at least one of the following: indicator light, speaker, and vibration motor. When the floor where the lobby door is located is a non-safe floor, the alarm module on the smart key can be controlled to issue an alarm with at least one of the following: sound, indicator light, and voice prompt, to remind maintenance personnel that there is a risk of falling into the shaft when opening the lobby door.

[0093] To more clearly illustrate the elevator group maintenance door opening method of this embodiment, the following explanation is provided with reference to examples:

[0094] like Figure 3FAs shown, the smart key includes a smart key power supply, a first height sensor, a first processor, a first wireless communication module, an elevator number recognition module, and an audible and visual alarm module. The smart key power supply provides power to the first height sensor, the first processor, the first wireless communication module, the elevator number recognition module, and the audible and visual alarm module. The car is equipped with a car power supply, a second height sensor, a second processor, and a second wireless communication module. The car power supply provides power to the second height sensor, the second processor, and the second wireless communication module. The door lock is equipped with a door lock encoding module. When the smart key is inserted into the door lock, the door lock encoding module in the door lock outputs an elevator identification signal to the elevator encoding recognition module. The elevator coding and identification module outputs the first elevator number to the first processor. The second height sensor on the car transmits the car's altitude to the first wireless communication module after the second processor adds the second elevator number to the car's elevator. The second elevator number is then transmitted to the first wireless communication module via the second wireless communication module. The first processor receives the car's altitude and the second elevator number from the first wireless communication module. When the first elevator number and the second elevator number are the same, the first processor receives the key altitude of the smart key from the first height sensor. Based on the key altitude and the car's altitude, the processor determines whether the floor to which the current hall door belongs is a safe floor. If not, it controls the audible and visual alarm module to sound an alarm to remind maintenance personnel that there is a danger in opening the current hall door.

[0095] In this embodiment, the smart key is equipped with a first wireless communication module and a first height sensor. Each elevator in the elevator group is equipped with a second wireless communication module and a second height sensor. When the smart key is inserted into the door lock, the first elevator number of the elevator to which the landing door belongs is determined based on the elevator identification signal output by the door lock. When the car data of the car is received from the second wireless communication module through the first wireless communication module, the car altitude and the second elevator number of the elevator to which the car belongs are determined from the car data. If the first elevator number and the second elevator number are the same, the floor where the current landing door is located is determined to be safe by using the key altitude and the car altitude. The addition of floor information enables the smart key to identify the elevator number of the elevator in a multi-elevator parallel maintenance scenario, and to filter out the car elevation of elevators with the same elevator number from the received car data. This solves the problem of existing smart keys being unable to identify elevator numbers in an elevator group, leading to misjudgments of the car position. It can accurately determine the car position of the elevator to which the smart key is inserted, so as to issue an alarm when the floor where the hall door is located is not a safe floor, ensuring the safety of maintenance personnel. In addition, the height sensor is used to determine the height of the car and the height of the smart key more accurately, improving the accuracy of whether the floor where the hall door is located is a safe floor.

[0096] Example 3

[0097] Figure 4This is a schematic diagram of an elevator group maintenance door opening device provided in Embodiment 3 of the present invention. In this embodiment, the smart key is equipped with a first height sensor and a first wireless communication module. Each elevator in the elevator group is equipped with a second height sensor and a second wireless communication module. The second wireless communication module is used to broadcast the car's altitude collected by the second height sensor on the car, such as... Figure 4 As shown, the elevator group maintenance door opening device includes:

[0098] The first elevator number determination module 401 is used to receive an elevator identification signal from the door lock when the smart key is inserted into the door lock of the hall door, and determine the first elevator number of the elevator to which the hall door belongs based on the elevator identification signal.

[0099] The car altitude and second elevator number determination module 402 is used to determine the car altitude and the second elevator number of the elevator to which the car belongs from the car data when the car data is received from the second wireless communication module through the first wireless communication module.

[0100] Elevator number determination module 403 is used to determine whether the first elevator number and the second elevator number are the same;

[0101] The key altitude determination module 404 is used to obtain the key altitude of the smart key through the first altitude sensor;

[0102] The safe floor determination module 405 is used to determine whether the floor where the hall door is located is a safe floor based on the car's altitude and the key's altitude.

[0103] The alarm control module 406 is used to control the alarm module on the smart key to trigger an alarm.

[0104] Optional, also includes:

[0105] The first unsafe floor determination module is used to determine that the floor where the hall door is located is an unsafe floor when the car data of the car is not received from the second wireless communication module through the first wireless communication module within a preset time period, and to execute the alarm control module 406.

[0106] Optional, also includes:

[0107] The second unsafe floor determination module is used to discard the car data and determine the floor where the hall door is located as an unsafe floor when the first elevator number and the second elevator number are different, and execute the alarm control module 406.

[0108] Optionally, the first elevator number determination module 401 includes:

[0109] A signal feature extraction unit is used to extract the signal features of the elevator identification signal;

[0110] The first elevator number determination unit is used to determine the first elevator number of the elevator to which the hall door belongs based on the signal characteristics.

[0111] Optionally, the door lock of the hall door is equipped with an adjustable resistor, and the signal feature extraction unit includes:

[0112] A voltage determination subunit is used to determine the voltage of the elevator identification signal;

[0113] The target resistance determination subunit is used to determine the target resistance corresponding to the voltage in a preset voltage-resistance lookup table, so as to serve as the signal feature of the elevator identification signal;

[0114] The first elevator number determination unit includes:

[0115] The first elevator number matching subunit is used to determine the elevator number corresponding to the target resistor in the resistor-elevator number lookup table to obtain the first elevator number.

[0116] Optionally, the door lock is equipped with an electronic tag identifying the elevator number of the elevator to which the hall door belongs, the smart key is equipped with a card reader, and the first elevator number determination module 401 includes:

[0117] An electronic tag reading unit is used by the card reader to read the electronic tag and obtain an elevator identification signal;

[0118] The first elevator number parsing unit is used by the card reader to parse the elevator identification signal and obtain the first elevator number of the elevator to which the hall door belongs.

[0119] Optionally, the safe floor determination module 405 includes:

[0120] An altitude comparison unit is used to determine whether the altitude of the car is greater than the altitude of the key;

[0121] The first altitude difference calculation unit is used to calculate the first difference between the altitude of the car and the altitude of the key.

[0122] The first safe floor determination unit is used to determine the floor where the hall door into which the smart key is inserted is a safe floor when the first difference is less than the first threshold.

[0123] The first non-safe floor determination unit is used to determine that the floor where the smart key is inserted is a non-safe floor when the first difference is greater than or equal to the first threshold.

[0124] The second altitude difference calculation unit is used to calculate the second difference between the altitude of the key and the altitude of the car.

[0125] The second safe floor determination unit is used to determine the floor where the smart key is inserted is a safe floor when the second difference is less than the second threshold.

[0126] The second non-safe floor determination unit is used to determine that the floor where the smart key is inserted is a non-safe floor when the second difference is greater than or equal to the second threshold.

[0127] The elevator group maintenance door opening device provided in the embodiments of the present invention can execute the elevator group maintenance door opening method provided in any embodiment of the present invention, and has the corresponding functional modules and beneficial effects of the method.

[0128] Example 4

[0129] Figure 5 A schematic diagram of the structure of a smart key 50 that can be used to implement embodiments of the present invention is shown. Figure 5 As shown, the smart key 50 includes at least one processor 51, and a memory, a height sensor 56, and a wireless communication module 57 communicatively connected to the at least one processor 51. The memory can be a read-only memory (ROM) 52, a random access memory (RAM) 53, etc., wherein the memory stores a computer program that can be executed by at least one processor. The processor 51 can perform various appropriate actions and processes based on the computer program loaded into the random access memory (RAM) 53 according to the computer program stored in the read-only memory (ROM) 52. The RAM 53 can also store various programs and data required for the operation of the smart key 50. The processor 51, ROM 52, and RAM 53 are interconnected with each other via a bus 54. An input / output (I / O) interface 55 is also connected to the bus 54.

[0130] Multiple components in the smart key 50 are connected to the I / O interface 55. The altitude sensor 56 can collect the altitude of the smart key and send it to the processor 51 through the I / O interface 55. The wireless communication module 57 allows the smart key 50 to exchange information / data with other devices through computer networks such as the Internet and / or various telecommunications networks.

[0131] Processor 51 can be a variety of general-purpose and / or special-purpose processing components with processing and computing capabilities. Some examples of processor 51 include, but are not limited to, a central processing unit (CPU), a graphics processing unit (GPU), various special-purpose artificial intelligence (AI) computing chips, various processors running machine learning model algorithms, a digital signal processor (DSP), and any suitable processor, controller, microcontroller, etc. Processor 51 performs the various methods and processes described above, such as the elevator group maintenance door opening method.

[0132] In some embodiments, the elevator group maintenance and door opening method may be implemented as a computer program tangibly contained in a computer-readable storage medium. In some embodiments, part or all of the computer program may be loaded and / or installed on the smart key 50 via ROM 52 and / or wireless communication module 57. When the computer program is loaded into RAM 53 and executed by processor 51, one or more steps of the elevator group maintenance and door opening method described above may be performed. Alternatively, in other embodiments, processor 51 may be configured to perform the elevator group maintenance and door opening method by any other suitable means (e.g., by means of firmware).

[0133] Various embodiments of the systems and techniques described above herein can be implemented in digital electronic circuit systems, integrated circuit systems, field-programmable gate arrays (FPGAs), application-specific integrated circuits (ASICs), application-specific standard products (ASSPs), systems-on-a-chip (SoCs), complex programmable logic devices (CPLDs), computer hardware, firmware, software, and / or combinations thereof. These various embodiments may include implementations in one or more computer programs that can be executed and / or interpreted on a programmable system including at least one programmable processor, which may be a dedicated or general-purpose programmable processor, capable of receiving data and instructions from a storage system, at least one input device, and at least one output device, and transmitting data and instructions to the storage system, the at least one input device, and the at least one output device.

[0134] Computer programs used to implement the methods of the present invention may be written in any combination of one or more programming languages. These computer programs may be provided to a processor of a general-purpose computer, a special-purpose computer, or other programmable data processing device, such that when executed by the processor, the computer programs cause the functions / operations specified in the flowcharts and / or block diagrams to be performed. The computer programs may be executed entirely on a machine, partially on a machine, or as a standalone software package, partially on a machine and partially on a remote machine, or entirely on a remote machine or server.

[0135] In the context of this invention, a computer-readable storage medium can be a tangible medium that may contain or store a computer program for use by or in conjunction with an instruction execution system, apparatus, or device. A computer-readable storage medium may include, but is not limited to, electronic, magnetic, optical, electromagnetic, infrared, or semiconductor systems, apparatus, or devices, or any suitable combination thereof. Alternatively, a computer-readable storage medium may be a machine-readable signal medium. More specific examples of machine-readable storage media include electrical connections based on one or more wires, portable computer disks, hard disks, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), optical fibers, portable compact disk read-only memory (CD-ROM), optical storage devices, magnetic storage devices, or any suitable combination thereof.

[0136] It should be understood that the various forms of processes shown above can be used, with steps reordered, added, or deleted. For example, the steps described in this invention can be executed in parallel, sequentially, or in different orders, as long as the desired result of the technical solution of this invention can be achieved, and this is not limited herein.

[0137] The specific embodiments described above do not constitute a limitation on the scope of protection of this invention. Those skilled in the art should understand that various modifications, combinations, sub-combinations, and substitutions can be made according to design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this invention should be included within the scope of protection of this invention.

Claims

1. A method for opening elevator group doors during maintenance, characterized in that, This is applied to smart keys, which are equipped with a first height sensor and a first wireless communication module. Each elevator in the elevator group is equipped with a second height sensor and a second wireless communication module. The second wireless communication module is used to broadcast the car's altitude collected by the second height sensor, including: When the smart key is inserted into the door lock of the hall door, the elevator identification signal is received from the door lock, and the first elevator number of the elevator to which the hall door belongs is determined based on the elevator identification signal; When the car data of the car is received from the second wireless communication module through the first wireless communication module, the car altitude and the second elevator number of the elevator to which the car belongs are determined from the car data; Determine whether the first elevator number and the second elevator number are the same; When the first elevator number is the same as the second elevator number, the key altitude of the smart key is obtained through the first height sensor; Determine whether the floor where the hall door is located is a safe floor based on the altitude of the elevator car and the altitude of the key. If not, control the alarm module on the smart key to sound an alarm; The door lock of the hall door is equipped with an adjustable resistor. When the smart key is inserted into the door lock, the internal circuit of the smart key and the adjustable resistor form an electrical circuit. When the smart key is inserted into the door lock, an elevator identification signal is received from the door lock, and the first elevator number to which the hall door belongs is determined based on the elevator identification signal, including: When the smart key is inserted into the door lock of the hall door, the voltage signal output across the adjustable resistor is used as the elevator identification signal; Determine the voltage of the elevator identification signal; The target resistance corresponding to the voltage is determined in a preset voltage-resistance lookup table to serve as the signal feature of the elevator identification signal; Determine the elevator number corresponding to the target resistor in the resistor-elevator number lookup table to obtain the first elevator number.

2. The elevator group maintenance door opening method according to claim 1, characterized in that, After receiving an elevator identification signal from the door lock when the smart key is inserted into the hall door, and determining the first elevator number of the elevator to which the hall door belongs based on the elevator identification signal, the system further includes: If no car data is received from the second wireless communication module via the first wireless communication module within a preset time period, the floor where the hall door is located is determined to be a non-safe floor, and the alarm module on the smart key is activated.

3. The elevator group maintenance door opening method according to claim 1, characterized in that, Also includes: If the first elevator number and the second elevator number are different, discard the car data, determine that the floor where the hall door is located is a non-safe floor, and execute the step of controlling the alarm module on the smart key to sound an alarm.

4. The elevator group maintenance door opening method according to any one of claims 1-3, characterized in that, The step of determining whether the floor where the hall door is located is a safe floor based on the car's altitude and the key's altitude includes: Determine whether the altitude of the car is greater than the altitude of the key; If so, calculate the first difference between the car's altitude and the key's altitude; When the first difference is less than the first threshold, the floor where the smart key is inserted is determined to be a safe floor; When the first difference is greater than or equal to the first threshold, the floor where the smart key is inserted is determined to be a non-secure floor. If not, calculate a second difference between the key's altitude and the car's altitude; When the second difference is less than the second threshold, the floor where the smart key is inserted is determined to be a safe floor; When the second difference is greater than or equal to the second threshold, the floor where the smart key is inserted is determined to be a non-secure floor.

5. A door opening device for elevator group maintenance, characterized in that, The smart key is equipped with a first height sensor and a first wireless communication module. Each elevator in the elevator group is equipped with a second height sensor and a second wireless communication module. The second wireless communication module is used to broadcast the car's altitude collected by the second height sensor on the car, including: The first elevator number determination module is used to receive an elevator identification signal from the door lock when the smart key is inserted into the door lock of the hall door, and determine the first elevator number of the elevator to which the hall door belongs based on the elevator identification signal; The car altitude and second elevator number determination module is used to determine the car altitude and the second elevator number of the elevator to which the car belongs from the car data received from the second wireless communication module through the first wireless communication module. The elevator number determination module is used to determine whether the first elevator number and the second elevator number are the same; The key altitude determination module is used to obtain the key altitude of the smart key through the first altitude sensor; The safe floor determination module is used to determine whether the floor where the hall door is located is a safe floor based on the car's altitude and the key's altitude. An alarm control module is used to prevent the smart key from opening the hall door; The door lock of the hall door is equipped with an adjustable resistor. When the smart key is inserted into the door lock, the internal circuit of the smart key and the adjustable resistor form an electrical circuit. The first elevator number determination module is specifically used for: When the smart key is inserted into the door lock of the hall door, the voltage signal output across the adjustable resistor is used as the elevator identification signal; Determine the voltage of the elevator identification signal; The target resistance corresponding to the voltage is determined in a preset voltage-resistance lookup table to serve as the signal feature of the elevator identification signal; Determine the elevator number corresponding to the target resistor in the resistor-elevator number lookup table to obtain the first elevator number.

6. A smart key, characterized in that, The smart key includes: At least one processor; and The system includes a wireless communication module, a height sensor, and a memory that are communicatively connected to the at least one processor. The memory stores a computer program that can be executed by the at least one processor, and the computer program is executed by the at least one processor to enable the at least one processor to perform the elevator group maintenance and door opening method according to any one of claims 1-4.

7. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores computer instructions that cause a processor to execute the elevator group maintenance and door opening method according to any one of claims 1-4.

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