Elevator waiting hall calling equipment for group control of elevators

Abstract

The utility model relates to the technical field of elevators, in particular to elevator waiting hall calling equipment for group control of elevators, which comprises a plurality of elevator waiting hall calling equipment bodies connected with a group control cabinet. Each elevator waiting hall elevator calling device body comprises an elevator calling device control main board, a communication control unit, a processor and a displayer capable of conducting conversion and display between a target floor login mode interface and a button login mode interface. According to the utility model, the communication control unit consisting of the Ethernet communication module and the RS485 communication module is matched with the processor and the elevator calling equipment control mainboard, so that the processor can carry out logic judgment and display content control instruction transmission according to an elevator calling signal and an upper computer signal; therefore, the display can switch and display between the target floor login mode interface and the button login mode interface, and on the premise of controlling the cost, the complementation and compatibility of two elevator calling modes of the group control button and the target floor login system are realized.

Description

Technical Field

[0001] The utility model relates to the technical field of elevators, in particular to an elevator lobby calling device used for group-controlled elevators. Background Art

[0002] As people's living standards continue to improve, high-rise buildings, especially high-traffic office buildings, are increasingly using group-controlled elevators to cope with higher elevator demands.

[0003] The elevator calling equipment in the elevator lobby of a group control elevator generally adopts the method of group control buttons. The elevator calling signal is transmitted to the group control cabinet to coordinate the dispatch of the elevators. Later, in order to process the elevator calling signal more efficiently, some high-end projects began to use destination floor login devices in the elevator lobby. The destination floor login device can obtain the destination floor information when the passenger logs in, so that the elevator can be allocated more reasonably, the number of elevator stops can be reduced, and the overall efficiency of the elevator can be improved.

[0004] Although the group control button control method has a more stable communication status, when the building has a high demand for elevators, the passenger flow may be concentrated on a certain floor, resulting in reduced elevator efficiency. The use of the destination login system can more efficiently solve the problem of passenger flow distribution, but because the destination login system carries a larger data flow, it will have higher requirements for the communication network and server. When the communication network is poor or the server is abnormal, it will cause the login system of a certain floor or the entire elevator to be unusable, which will bring great inconvenience. Therefore, we need to propose an elevator lobby call device for group control elevators to solve the above problems, so that it can achieve the complementary compatibility of the two elevator call modes of group control buttons and destination login systems under the premise of controlling costs. Utility Model Content

[0005] The purpose of the utility model is to provide an elevator lobby calling device for a group-controlled elevator, which can achieve complementary compatibility of two elevator calling modes of a group control button and a destination floor login system under the premise of controlling costs, so as to solve the problems raised in the background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an elevator lobby call device for a group-controlled elevator, comprising a plurality of elevator lobby call device bodies connected to a group control cabinet, each of which comprises an elevator lobby call device control mainboard, a communication control unit, a processor for processing logic judgment of elevator call signals and host computer signals and display content control, and a display capable of switching and displaying between a destination layer login mode interface and a button login mode interface, the communication control unit and the processor are both arranged on the elevator lobby call device control mainboard, and one end of the elevator lobby call device control mainboard is connected to a power module;

[0007] The communication control unit includes an Ethernet communication module and an RS485 communication module connected to the communication interface of the group control cabinet. The Ethernet communication module and the RS485 communication module are both connected to the processor. The Ethernet communication module is connected to a protection circuit for protecting the input interface circuit from external interference. The RS485 communication module is connected to a bias circuit for ensuring the stability of the signal receiving end state.

[0008] Preferably, the Ethernet communication module includes an Ethernet controller and an Ethernet interface connected to a group control cabinet, the Ethernet controller is connected to a processor, and the Ethernet interfaces on a plurality of elevator call device control motherboards are all connected to the group control cabinet.

[0009] Preferably, the protection circuit includes a resistor R3 and a resistor R4 arranged in parallel, the connecting end of the resistor R3 and the resistor R4 is connected to a capacitor C1 to ground, the other end of the resistor R3 is connected to the RX+ end of the Ethernet controller, and the other end of the resistor R4 is connected to the RX- end of the Ethernet controller.

[0010] Preferably, the protection circuit also includes a resistor R1 and a resistor R2 arranged in parallel, the connecting end of the resistor R1 and the resistor R2 is connected to the power supply module, the other end of the resistor R1 is connected to the TX- end of the Ethernet controller, and the other end of the resistor R2 is connected to the TX+ end of the Ethernet controller.

[0011] Preferably, the RS485 communication module includes an RS485 transceiver and an RS485 interface connected to the group control cabinet at one end, and one end of the RS485 transceiver is connected to the processor.

[0012] Preferably, the bias circuit includes a ground resistor R6, a resistor R5, and a TVS diode D1 and a TVS diode D2 arranged in parallel, the connecting end of the TVS diode D1 and the TVS diode D2 is grounded, the other end of the TVS diode D1 is connected to the B end of the RS485 interface, the ground resistor R6 is connected to the B end of the RS485 interface, the other end of the TVS diode D2 is connected to the A end of the RS485 interface, one end of the resistor R5 is connected to the A end of the RS485 interface, and the other end of the resistor R5 is connected to the power module.

[0013] Preferably, the power module includes two power supplies, and the two power supplies are respectively connected to the connection ends of the resistor R1 and the resistor R2 and the other end of the resistor R5.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] 1. The utility model cooperates with the communication control unit composed of Ethernet communication module and RS485 communication module, the processor and the elevator call device control mainboard, so that the processor can perform logical judgment and transmit display content control instructions according to the elevator call signal and the upper computer signal, so that the display can switch and display between the destination layer login mode interface and the button login mode interface. Under the premise of controlling costs, the complementary compatibility of the two elevator call modes of the group control button and the destination layer login system is realized.

[0016] 2. The utility model effectively protects the input interface circuit from external interference through the cooperation of the protection circuit and the Ethernet communication module. Through the cooperation of the bias circuit and the RS485 communication module, it can effectively ensure the stability of the signal receiving end state, thereby ensuring the stability of the communication signal transmission of the communication control unit, so as to improve the accuracy of elevator call signal processing. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a cross-sectional view of the elevator lobby calling device used for group-controlled elevators of the utility model;

[0018] Figure 2 This is the circuit diagram of the communication control unit of the utility model;

[0019] Figure 3 It is the work flow chart of the utility model;

[0020] Figure 4 The figure is a schematic diagram of switching between two elevator call interfaces of the display of the utility model.

[0021] In the figure: 1. Elevator call equipment control main board; 2. Communication control unit; 21. Ethernet interface; 22. RS485 interface; 23. Ethernet controller; 24. RS485 transceiver; 3. Processor; 4. Display; 5. Group control cabinet; 51. Main control computer; 52. Group management control main board; 53. Network switch; 6. Power supply. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] See also Figure 1-4The utility model provides a technical solution: a lobby elevator call device for a group-controlled elevator, comprising a plurality of lobby elevator call device bodies connected to a group control cabinet 5, each lobby elevator call device body comprising an elevator call device control mainboard 1, a communication control unit 2, a processor 3 for processing logic judgment of elevator call signals and upper computer signals and display content control, and a display 4 capable of switching and displaying between a destination layer login mode interface and a button login mode interface, the communication control unit 2 and the processor 3 are both arranged on the elevator call device control mainboard 1, and one end of the elevator call device control mainboard 1 is connected to a power module;

[0024] The processor 3 is used to process the logic judgment of the elevator call signal and the host computer signal, the control command of the liquid crystal display 4 display content, transmit the elevator call information to the group control cabinet 5 through the communication interface, and convert the received control cabinet command into the display information of the display 4;

[0025] The communication control unit 2 monitors the status of the communication interface. The Ethernet communication module is the regular communication interface, and the RS485 communication module is the backup communication interface. When the Ethernet communication interface (regular communication interface) has multiple groups of communication data that are not responded to, the RS485 interface 22 (backup communication interface) will be used to verify the system working status. When the judgment result is that the network is interrupted or the server is abnormal, the backup communication interface will be enabled to upload the elevator call information.

[0026] The group control cabinet 5 includes a main control computer, a network switch 53 and a group management control mainboard 52 . The LAN interface of the main control computer 51 is connected to the LAN interface of the network switch 53 , and the group management control mainboard 52 is connected to the main control computer 51 .

[0027] The communication control unit 2 includes an Ethernet communication module and an RS485 communication module connected to the communication interface of the group control cabinet 5. The Ethernet communication module and the RS485 communication module are both connected to the processor 3. The Ethernet communication module is connected to a protection circuit for protecting the input interface circuit from external interference, and the RS485 communication module is connected to a bias circuit for ensuring the stability of the signal receiving end state.

[0028] The Ethernet communication module includes an Ethernet controller 23 and an Ethernet interface 21 connected to the group control cabinet 5. The Ethernet controller 23 is connected to the processor 3. The Ethernet interfaces 21 on the multiple elevator call device control motherboards 1 are all connected to the group control cabinet 5, that is, the Ethernet interface 21 is connected to the LAN interface of the network switch 53.

[0029] The protection circuit includes a resistor R3 and a resistor R4 which are arranged in parallel. The connecting end of the resistor R3 and the resistor R4 is connected to a capacitor C1 to ground. The other end of the resistor R3 is connected to the RX+ end of the Ethernet controller 23. The other end of the resistor R4 is connected to the RX- end of the Ethernet controller 23. The resistors R3 and R4 are differential mode matching resistors at the receiving end. The capacitor C1 to ground is grounded to provide a return path for the common mode signal, filter out the common mode interference signal, and thus protect the input interface circuit from external interference.

[0030] The protection circuit also includes a resistor R1 and a resistor R2 arranged in parallel, the connection end of the resistor R1 and the resistor R2 is connected to the power module, the other end of the resistor R1 is connected to the TX- end of the Ethernet controller 23, and the other end of the resistor R2 is connected to the TX+ end of the Ethernet controller 23. The resistors R1 and R2 are differential mode matching resistors at the transmitting end.

[0031] The RS485 communication module includes an RS485 transceiver 24 and an RS485 interface 22 connected to the group control cabinet 5 at one end, and one end of the RS485 transceiver 24 is connected to the processor 3. The bias circuit includes a ground resistor R6, a resistor R5, and a TVS diode D1 and a TVS diode D2 arranged in parallel, the connection end of the TVS diode D1 and the TVS diode D2 is grounded, the other end of the TVS diode D1 is connected to the B end of the RS485 interface 22, the ground resistor R6 is connected to the B end of the RS485 interface 22, the other end of the TVS diode D2 is connected to the A end of the RS485 interface 22, one end of the resistor R5 is connected to the A end of the RS485 interface 22, and the other end of the resistor R5 is connected to the power module. It is connected to the RS485 interface of the group management mainboard of the group control cabinet 5 through the RS485 communication interface. TVS diode D1 and TVS diode D2 are transient voltage suppression diodes used to protect the interface circuit from being damaged by voltage spikes introduced by the wires. Resistors R5 and R6 are safety bias resistors used to ensure the stability of the signal receiving end state.

[0032] The power supply module includes two power supplies 6, which are respectively connected to the connection ends of the resistors R1 and R2 and the other end of the resistor R5. The two power supplies 6 provide stable electrical levels for the RS485 communication module and the Ethernet communication module to ensure that the RS485 communication module and the Ethernet communication module can work normally.

[0033] When the network is interrupted or the server is abnormal, the standby communication interface of the elevator calling device in the elevator lobby continuously sends request data but cannot get a reply. At the same time, the backup data interface will synchronously send the elevator calling information to the group control cabinet 5. If a correct response is obtained from the group control cabinet 5, it is judged that the network or server of the standby communication interface is faulty. The elevator calling device in the elevator lobby will switch to the button calling mode and exit the destination floor login mode.

[0034] While the elevator lobby call device is switched to push-button call mode, its standby communication interface will still monitor the network communication status. If the network signal has returned to normal, in order to avoid confusion, it will return to the standby destination floor login mode display screen after processing the operational needs of passengers logging in according to the push-button mode.

[0035] The display 4 is configured as a display with a touch screen, which serves as a window for interacting with passengers, can receive passenger elevator call information, and display elevator dispatch information from the group control cabinet 5 .

[0036] The communication control unit 2 has two interfaces, one is the Ethernet interface 21 for regular communication, and the other is the RS485 interface 22 for backup communication. The Ethernet interface 21 has a higher data transmission efficiency, and can timely process the passenger login information collected by the elevator lobby login device, upload it to the group control cabinet 5 in a predetermined format, and convert the instructions issued by the group control cabinet 5 into the display status executed by the elevator lobby login device. The RS485 interface 22 has a more stable communication stability. When the elevator lobby call device works in the mode of the destination floor login device, the RS485 interface 22 only sends verification data, and when it is determined that the network or server of the regular communication interface fails, the elevator lobby call device body switches to the button call mode, and the RS485 interface 22 will send the elevator lobby login data according to the instructions of the processor 3.

[0037] The two human-machine interfaces displayed on the display 4 include a destination floor login mode interface and a button login mode interface. The processor 3 determines the screen status to be displayed based on the communication data obtained from the elevator lobby login device interface. When the Ethernet interface 21 communicates normally with the group control cabinet 5, the destination floor login mode interface is displayed. When the Ethernet interface 21 cannot receive the communication data of the group control cabinet 5 normally, and the RS485 interface 22 can communicate normally with the group control cabinet 5, the button login mode interface is displayed.

[0038] It should be noted that the elevator calling device should also include a necessary power interface and a power conversion circuit, as well as other necessary components. For the convenience of description, the drawings only illustrate the parts related to the utility model, rather than the entire structure.

[0039] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An elevator lobby call device for a group-controlled elevator, comprising a plurality of elevator lobby call device bodies connected to a group control cabinet (5), characterized in that: Each of the elevator lobby elevator call devices comprises an elevator call device control mainboard (1), a communication control unit (2), a processor (3) for processing the logic judgment of elevator call signals and host computer signals and controlling the display content, and a display (4) capable of switching and displaying between a destination floor login mode interface and a button login mode interface, wherein the communication control unit (2) and the processor (3) are both arranged on the elevator call device control mainboard (1), and one end of the elevator call device control mainboard (1) is connected to a power module; The communication control unit (2) comprises an Ethernet communication module and an RS485 communication module connected to the communication interface of the group control cabinet (5); the Ethernet communication module and the RS485 communication module are both connected to the processor (3); the Ethernet communication module is connected to a protection circuit for protecting the input interface circuit from external interference; and the RS485 communication module is connected to a bias circuit for ensuring the stability of the state of the signal receiving end.

2. The elevator lobby calling device for a group-controlled elevator according to claim 1, characterized in that: The Ethernet communication module comprises an Ethernet controller (23) and an Ethernet interface (21) connected to a group control cabinet (5); the Ethernet controller (23) is connected to a processor (3); and the Ethernet interfaces (21) on a plurality of elevator call device control mainboards (1) are all connected to the group control cabinet (5).

3. The elevator lobby calling device for a group-controlled elevator according to claim 2, characterized in that: The protection circuit comprises a resistor R3 and a resistor R4 which are arranged in parallel, wherein the connection end of the resistor R3 and the resistor R4 is connected to a capacitor C1 to ground, the other end of the resistor R3 is connected to the RX+ end of the Ethernet controller (23), and the other end of the resistor R4 is connected to the RX- end of the Ethernet controller (23).

4. The elevator lobby calling device for a group-controlled elevator according to claim 3, characterized in that: The protection circuit also includes a resistor R1 and a resistor R2 which are arranged in parallel, wherein the connection ends of the resistor R1 and the resistor R2 are connected to the power module, the other end of the resistor R1 is connected to the TX- end of the Ethernet controller (23), and the other end of the resistor R2 is connected to the TX+ end of the Ethernet controller (23).

5. The elevator lobby calling device for a group-controlled elevator according to claim 4, characterized in that: The RS485 communication module comprises an RS485 transceiver (24) and an RS485 interface (22) one end of which is connected to the group control cabinet (5); one end of the RS485 transceiver (24) is connected to the processor (3).

6. The elevator lobby calling device for a group-controlled elevator according to claim 5, characterized in that: The bias circuit comprises a ground resistor R6, a resistor R5, and a TVS diode D1 and a TVS diode D2 which are arranged in parallel, wherein the connection end of the TVS diode D1 and the TVS diode D2 is grounded, the other end of the TVS diode D1 is connected to the B end of the RS485 interface (22), the ground resistor R6 is connected to the B end of the RS485 interface (22), the other end of the TVS diode D2 is connected to the A end of the RS485 interface (22), one end of the resistor R5 is connected to the A end of the RS485 interface (22), and the other end of the resistor R5 is connected to a power module.

7. The elevator lobby calling device for a group-controlled elevator according to claim 6, characterized in that: The power supply module comprises two power supplies (6), and the two power supplies (6) are respectively connected to the connection ends of the resistor R1 and the resistor R2 and the other end of the resistor R5.

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