Elevator key control device and elevator key system

Abstract

The present invention provides an elevator key control device and an elevator key system, wherein the elevator key control device comprises at least one key control panel cascaded through a bus, the key control panel receives a key control instruction issued by an external device through an expansion interface, the key control circuit on the key control panel parses the key control instruction to determine the elevator key to be controlled by the external device, and controls the corresponding elevator key or controls the corresponding elevator key through the corresponding key control panel. The key control panel of the present invention can be flexibly assembled according to the number of elevator cases of the elevator key panel, so as to realize key control, key management and key status query, etc., and is suitable for more types of elevator key panels, thereby improving the compatibility of the elevator key control device.

Description

Technical Field

[0001] The invention belongs to the technical field of elevator control, and in particular relates to an elevator key control device and an elevator key system. Background Art

[0002] The existing elevator floor button control is connected to the elevator button or elevator button board through the button control board. When there are many floors, the connection is complicated, which is not conducive to management and maintenance. In addition, the number of elevator buttons controlled by the button control board is limited, and it cannot adapt to elevator button boards with different numbers of floors, and the compatibility is poor. Summary of the invention

[0003] The object of the present invention is to provide an elevator key control device, aiming to solve the problem of poor compatibility of traditional key control panels.

[0004] A first aspect of an embodiment of the present invention provides an elevator key control device, the elevator key control device comprising at least one key control panel cascaded via a bus;

[0005] Each of the key control panels comprises at least one expansion interface for connecting an external device, a plurality of key interfaces, and a key control circuit electrically connected to the at least one expansion interface and the plurality of key interfaces respectively, and the at least one key control panel is electrically connected to the elevator keys in the elevator key panel one by one through the plurality of key interfaces respectively;

[0006] The key control circuit is used for:

[0007] Acquiring the corresponding elevator button status in the elevator button panel through the plurality of button interfaces, receiving the button control instruction issued by the external device through the at least one expansion interface, and parsing the button control instruction to determine the elevator button to be controlled by the external device;

[0008] When it is determined that the elevator button to be controlled by the external device is an elevator button connected to another button control panel, sending the button control instruction to the corresponding button control panel; and

[0009] When it is determined that the elevator button to be controlled by the external device is an elevator button connected to its own button control panel or a button control instruction sent by another button control panel is received, a button trigger signal is sent to the corresponding elevator button to control the corresponding elevator button.

[0010] In one embodiment, the button control circuit is also used to obtain the trigger result of the corresponding elevator button, and feed back the trigger result to the button control board at the first position of the cascade through a bus, so that the button control board at the first position of the cascade feeds back the trigger result to the external device through the corresponding expansion interface.

[0011] In one embodiment, each of the key control circuits includes a controller, a bus module, a key detection control module and a power module;

[0012] The bus module, the key detection module and the power module are electrically connected to the controller respectively, the controller is also electrically connected to the expansion interface, the key detection control module is also electrically connected to multiple key interfaces in the key control board, the power module is also electrically connected to the expansion interface and the key detection control module respectively, and each of the bus modules is electrically cascaded in sequence;

[0013] The button control detection module is used to obtain the elevator button status corresponding to the elevator button panel through the plurality of button interfaces;

[0014] The controller is used to:

[0015] Receiving a key control instruction sent by the external device through the at least one expansion interface, and parsing the key control instruction to determine the elevator key to be controlled by the external device;

[0016] When it is determined that the elevator button to be controlled by the external device is an elevator button connected to another button control panel, sending the button control instruction to the corresponding button control panel; and

[0017] When it is determined that the elevator button to be controlled by the external device is an elevator button connected to its own button control board or a button control instruction sent by another button control board is received, a button trigger signal is sent to the button control detection module;

[0018] The button detection control module is further used to control the corresponding elevator button triggering action according to the button triggering signal, and feed back the triggering result of the elevator button to the controller;

[0019] The controller is further used to feed back the trigger result to the key control board at the first position of the cascade through the bus module, so that the key control board at the first position of the cascade feeds back the trigger result to the external device.

[0020] In one embodiment, the key control board includes a first key control board to an Mth key control board cascaded through a bus, the bus modules of each key control board are cascaded in sequence, the power input end of the power module of the first key control board and the power input end of the bus module are electrically connected to the power supply device, the power output end of the power module of the first key control board is electrically connected to the controller, the expansion interface, and the key detection control module of the first key control board respectively, and the power output end of the bus module of the first key control board is connected to the power input end of the bus module of the adjacent key control board;

[0021] The power output end of the bus module from the key control board adjacent to the first key control board to the Mth key control board is electrically connected to the corresponding power module.

[0022] In one embodiment, each of the bus modules includes a resistor voltage divider circuit, the resistor voltage divider circuit is electrically connected to the controller, the resistor voltage divider circuits of each of the bus modules are cascaded in sequence, the resistor voltage divider circuit of the first key control board is connected to the power supply end of the power supply device, and the resistor voltage divider circuit of the Mth key control board is grounded;

[0023] All the resistor voltage divider circuits are used to perform series resistor voltage division on the voltage output by the power supply device, and output voltage signals of different magnitudes to the controller in the key control board respectively;

[0024] Each of the controllers is used to determine the sequence position of the key control board according to the voltage of the voltage signal, and feed back to the first key control board through the bus module.

[0025] In one embodiment, each of the resistor voltage divider circuits includes a first resistor and a second resistor;

[0026] The first end of the first resistor is the input end of the resistor voltage divider circuit, the second end of the first resistor is connected to the first end of the second resistor to form the output end of the resistor voltage divider circuit, and the second end of the second resistor is the feedback end of the resistor voltage divider circuit.

[0027] In one embodiment, the button control circuit further includes a storage module for storing a parameter configuration file of the button control panel, and the storage module is electrically connected to the power module and the controller respectively.

[0028] In one embodiment, the expansion interface includes one or more of a USB interface, a network port, an RS232 interface, an RS485 interface, and a TTL interface.

[0029] In one embodiment, the bus module includes a CAN serial bus and / or an RS485 serial bus.

[0030] A second aspect of an embodiment of the present invention provides an elevator key system, which includes an elevator key panel, at least one external device and the elevator key control device as described above, wherein the elevator key panel and the external device are electrically connected to the elevator key control device respectively.

[0031] The present invention forms an elevator key control device through at least one key control panel cascaded by a bus. The key control panel is correspondingly arranged according to the number of elevator keys of the elevator key panel. Each key control panel can monitor and control multiple elevator keys. Each key control panel can be connected to at least one external device and receive a key control instruction issued by the external device through an expansion interface. The key control circuit parses the key control instruction to determine the elevator key to be controlled by the external device. When it is determined that the elevator key to be controlled by the external device is an elevator key connected to its own key control panel, the key control circuit sends a key trigger signal to the corresponding elevator key to control the action of the elevator key, such as lighting up, extinguishing or sending a floor control signal. When it is determined that the elevator key to be controlled by the external device is an elevator key connected to another key control panel, the key control circuit sends the key control instruction to the corresponding key control panel, and the other key control panel triggers and controls the elevator key to be controlled. The present invention modularizes the key control panel and can be flexibly assembled according to the number of elevator cases of the elevator key panel, so as to realize key control, key management and key status query, etc. It is more flexible and convenient, and can be applied to more types of elevator key panels, thereby improving the compatibility and reliability of the elevator key control device. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 A first structural schematic diagram of an elevator key control device is provided for an embodiment of the present invention;

[0033] Figure 2 A second structural schematic diagram of an elevator key control device is provided for an embodiment of the present invention;

[0034] Figure 3 A first structural schematic diagram of a resistance sampling circuit is provided for an embodiment of the present invention;

[0035] Figure 4 A second structural schematic diagram of a resistance sampling circuit is provided for an embodiment of the present invention;

[0036] Figure 5 A schematic diagram of the structure of an elevator button system provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0037] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0038] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying 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 one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0039] A first aspect of an embodiment of the present invention provides an elevator key control device 1 .

[0040] like Figure 1 As shown, the elevator key control device 1 includes at least one key control board cascaded through a bus, wherein, when there is only one key control board, the connection between it and the external device also belongs to a cascade relationship.

[0041] Each key control panel includes at least one expansion interface for connecting to an external device 3, a plurality of key interfaces, and a key control circuit electrically connected to the at least one expansion interface and the plurality of key interfaces respectively. At least one key control panel is electrically connected to the elevator keys in the elevator key panel one by one through the plurality of key interfaces respectively.

[0042] Key control circuit for:

[0043] Acquire the corresponding elevator button status in the elevator button panel through a plurality of button interfaces, receive the button control instruction sent by the external device 3 through at least one expansion interface, and parse the button control instruction to determine the elevator button to be controlled by the external device 3;

[0044] When it is determined that the elevator button to be controlled by the external device 3 is an elevator button connected to another button control panel, a button control instruction is sent to the corresponding button control panel; and

[0045] When it is determined that the elevator button to be controlled by the external device 3 is an elevator button connected to its own button control board or when a button control instruction sent by another button control board is received, a button trigger signal is sent to the corresponding elevator button to control the corresponding elevator button.

[0046] In this embodiment, each key control board can monitor and control multiple elevator keys. The number of key control boards can be set according to the number of elevator keys on the elevator key board 2, satisfying (M - 1)*N < X ≦ M*N, where M ≧ 1, M is the number of key control boards, X is the number of elevator keys on the elevator key board 2, and N is the number of key interfaces of the key control board. When different elevator keys are provided on the elevator key board, the number of key control boards is increased accordingly and are respectively connected to the elevator keys on the elevator key board one by one through the key interfaces. By modularizing the key control boards, they can be flexibly assembled according to the number of elevator keys on the elevator key board, can be applied to more types of elevator key boards, and improve the compatibility and reliability of the elevator key control device.

[0047] For example, when one key control board can monitor and control 8 elevator keys, when the number of elevator keys on the elevator key board 2 is 15, only 2 key control boards need to be set. When the number of elevator keys on the elevator key board 2 is 17, 3 key control boards need to be set. When multiple key control boards are provided, the multiple key control boards are cascaded in sequence through the bus and are connected to the corresponding number of elevator keys on the elevator key board 2 through the key interfaces. For example, when the number of key control boards is 3 and the number of elevator keys is 17, the first key control board 100 and the second key control board 200 are respectively connected to 8 elevator keys, and the third key control board is connected to 1 elevator key. At the same time, each key control circuit obtains the states of the elevator keys connected correspondingly, such as floor information, elevator key lighting state, etc. When multiple key control boards are included, the multiple key boards respectively feedback the states of the connected elevator keys to other key control boards. Each key control board can obtain the states of the elevator keys of other key control boards, and the key control board located at the head of the cascade is used as the main key control board to perform parameter configuration, key control and other operations.

[0048] Each key control board can be connected to at least one external device 3 through the expansion interface. The external device 3 can include control terminals such as card readers, robots, wireless modules, etc. The expansion interface supports multiple communication methods including one or more of USB interface, network interface, RS232 interface, RS485 interface and TTL interface.

[0049] When one or more of the key control panels receive a key control instruction from the external device 3, the key control circuit in the key control panel connected to the external device 3 parses the instruction and performs corresponding signal control and transmission. For example, when the robot issues a key control instruction to control the elevator button representing the 5th floor to light up, the key control circuit on the key control panel connected thereto parses the key control instruction and determines that the elevator button to be controlled is the elevator button representing the 5th floor. When the key interface of the robot is connected to the elevator button representing the 5th floor, the key control circuit outputs a key trigger signal to the elevator button, thereby controlling the elevator button to light up. When the button interface is not connected to the elevator button representing the 5th floor, the button control instruction is sent to the corresponding button control board connected to the elevator button representing the 5th floor, and the corresponding button control board controls the elevator button representing the 5th floor to light up. For example, the first button control board 100 is connected to the elevator buttons representing the 1st to 4th floors, and the second button control board 200 is connected to the elevator buttons representing the 5th to 8th floors. The button control circuit on the first button control board 100 forwards the button control instruction to the second button control board 200, and the button control circuit on the second button control board 200 performs elevator button control, thereby realizing the detection, identification, execution and feedback of the button control instruction, and improving the reliability of the button control.

[0050] Similarly, other button control panels perform the same action. When the button control instruction received is to control the elevator button connected to itself, the corresponding elevator button action is controlled. When the button control instruction received is to control the elevator button connected to other button control panels, the button control instruction is forwarded to the corresponding button control panel, and the corresponding button control panel performs the elevator button control work.

[0051] At the same time, since some elevator buttons on the elevator keypad 2 can be unlit, when the button control circuit detects that the elevator button is mistakenly unlit, the button control circuit can control the elevator button to light up again, thereby ensuring the control reliability of the elevator button.

[0052] The key control panel is cascaded through the bus and transmits signals such as configuration information, control instructions, and power signals.

[0053] The button control circuit may include a controller, a communication module and other structures, which are configured according to specific needs.

[0054] The present invention forms an elevator key control device 1 through at least one key control board cascaded by a bus. The key control board is set according to the number of elevator keys on the elevator key board 2. Each key control board can monitor and control N elevator keys. Each key control board can be connected to an external device 3 and receive a key control instruction issued by the external device 3 through an expansion interface. The key control circuit parses the key control instruction to determine the elevator key to be controlled by the external device 3. When it is determined that the elevator key to be controlled by the external device 3 is the elevator key connected to the key control board, the key control circuit sends a key trigger signal to the corresponding elevator key. Control the elevator button trigger action, such as lighting up, extinguishing or sending a floor control signal. When it is determined that the elevator button to be controlled by the external device 3 is an elevator button connected to another button control board, the button control circuit sends the button control instruction to the corresponding button control board, and the other button control board triggers and controls the elevator button to be controlled. The present invention modularizes the button control board and can be flexibly assembled according to the number of elevator cases of the elevator button board 2, so as to realize button control, button management and button status query, etc. It is more flexible and convenient and can be applied to more types of elevator button boards 2, thereby improving the compatibility and reliability of the elevator button control device 1.

[0055] In one embodiment, the button control circuit is also used to obtain the trigger result of the corresponding elevator button, and feed back the trigger result to the button control board at the first position of the cascade through the bus, so that the button control board at the first position of the cascade feeds back the trigger result to the external device 3 through the corresponding expansion interface.

[0056] In this embodiment, the key control board at the first position of the cascade and the key control circuit inside it serve as the master control of the elevator key control device, and perform operations such as signal feedback and sequence bit numbering of the key control board. When the elevator key triggers the action, the elevator key feeds back the corresponding trigger result to the key control circuit that outputs the key trigger signal, and the key control circuit feeds back the trigger result to the key control board at the first position of the cascade, and the key control board at the first position of the cascade feeds back the trigger result to the external device 3 that issues the corresponding key control instruction through the key control board connected to the external device 3.

[0057] like Figure 2As shown, in one embodiment, each key control circuit includes a controller, a bus module, a key detection control module and a power module. For example, the first key control circuit 110 includes a first controller 112, a first bus module 114, a first key detection control module 113 and a first power module 111, and the second key control circuit 210 includes a second controller 212, a second bus module 214, a second key detection control module 213 and a second power module 211. The bus module, the key detection module and the power module are electrically connected to the controller respectively, and the controller is also electrically connected to the expansion interface. The key detection control module is also electrically connected to multiple key interfaces in the key control board. The power module is also electrically connected to the expansion interface and the key detection control module respectively, and each bus module is electrically cascaded in sequence;

[0058] A button control detection module is used to obtain the elevator button status corresponding to the elevator button panel through several button interfaces;

[0059] Controller for:

[0060] Receiving a key control instruction sent by the external device 3 through at least one expansion interface, and parsing the key control instruction to determine the elevator key to be controlled by the external device 3;

[0061] When it is determined that the elevator button to be controlled by the external device 3 is an elevator button connected to another button control panel, a button control instruction is sent to the corresponding button control panel; and

[0062] When it is determined that the elevator button to be controlled by the external device 3 is an elevator button connected to its own button control board or a button control instruction sent by another button control board is received, a button trigger signal is sent to the button control detection module;

[0063] The button detection control module is also used to control the corresponding elevator button triggering action according to the button triggering signal, and feed back the elevator button triggering result to the controller;

[0064] The controller is also used to feed back the trigger result to the key control board at the first position of the cascade through the bus module, so that the key control board at the first position of the cascade feeds back the trigger result to the external device 3.

[0065] In this embodiment, the power supply module on each button control panel provides working power for other modules on its own button control panel. The button detection control module is an execution unit of the elevator button operation. When receiving the button trigger signal of the controller, it controls the corresponding elevator button to light up or cancel the lighting operation. When receiving the status instruction of the controller to query the elevator button, it detects the elevator button status on the elevator button panel 2 and feeds back to the controller to realize the status detection and control of the elevator button. The power supply module on each button control panel can be an independent power supply module, or be connected to the bus respectively and obtain the working power from the bus and perform power conversion output. The specific structure is not limited.

[0066] When multiple button control panels are provided, the bus modules of the multiple button control panels are cascaded to achieve series expansion. The bus module includes functions such as power supply and communication function transmission, such as parameter configuration information instructions, button control instructions, status and configuration query instructions and other signal transmission.

[0067] When one of the key control panels is connected to an external device 3 and receives a key control instruction from the external device 3, for example, when the first key control panel 100 located at the first position in the cascade receives a key control instruction from the external device 3 to control the elevator button representing the 5th floor to light up, the first controller 112 parses the key control instruction and determines that the elevator button to be controlled is the elevator button representing the 5th floor. When it is determined that the first key interface 120 is connected to the elevator button representing the 5th floor, the first controller 112 outputs a key trigger signal to the first key detection control module 113, thereby controlling the elevator button to light up. When the first key interface 120 is not connected to the elevator representing the 5th floor, the first controller 112 outputs a key trigger signal to the first key detection control module 113, thereby controlling the elevator button to light up. When a key is pressed, the key control instruction is sent to the key control panel corresponding to the elevator button representing the 5th floor, and the key detection control module of the corresponding key control panel controls the elevator button representing the 5th floor to light up. For example, the first key control panel 100 is connected to the elevator buttons representing the 1st to 4th floors, and the second key control panel 200 is connected to the elevator buttons representing the 5th to 8th floors. The controller on the first key control panel 100 forwards the key trigger signal to the second key control panel 200, and the second controller 212 and the second key detection control module 213 on the second key control panel 200 perform elevator button control to realize the detection, identification, execution and feedback of the key control instruction.

[0068] Similarly, other connected key control panels perform the same action. For example, when the second key control panel 200 connected adjacent to the first key control panel 100 receives a key control instruction issued by an external device 3 and determines that the key control instruction is to control the elevator button connected to itself, it controls the corresponding elevator button action. When the received key control instruction is to control the elevator button connected to other key control panels, the key control instruction is forwarded to the corresponding key control panel, and the corresponding key control panel performs the elevator button control work. When the elevator button triggers the action, the trigger result is fed back to the corresponding key detection control module, and the corresponding controller feeds back the trigger result to the first key control panel 100 through the bus module. The first key control panel 100 feeds back the trigger result to the corresponding external device 3 that issued the key control instruction.

[0069] At the same time, since some elevator buttons on the elevator keypad 2 can be unlit, when the button control detection control module detects that the elevator button is mistakenly unlit, the button control detection control module can control the elevator button to light up again.

[0070] In this embodiment, each controller can be a controller such as a CPU, a single-chip microcomputer, an MCU, etc., and the specific structure is not limited. The bus module can adopt a CAN serial bus or an RS485 serial bus. The button detection control module can adopt a detection chip and a switch component structure to detect and control the state of the elevator button. The specific structure can be selected according to needs and is not specifically limited here.

[0071] like Figure 2 As shown, in one embodiment, the key control board includes a first key control board 100 to an Mth key control board cascaded through a bus, the bus modules of each key control board are cascaded in sequence, the power input end of the power module of the first key control board 100 and the power input end of the bus module are electrically connected to the power supply device, the power output end of the power module of the first key control board 100 is electrically connected to the controller, the expansion interface, and the key detection control module of the first key control board 100 respectively, and the power output end of the bus module of the first key control board 100 is connected to the power input end of the bus module of the adjacent key control board;

[0072] The power output end of the bus module from the key control board adjacent to the first key control board 100 to the Mth key control board is electrically connected to the corresponding power module.

[0073] In this embodiment, the first power module 111 is provided with working power by the power supply device, and the working power is converted and output to each module on the first key control board 100. At the same time, the first bus module 114 transmits the working power and outputs it to the adjacent bus module, and each bus module transmits it in sequence until the last bus module. The second power module 211 to the Mth power module respectively obtain the working power from the corresponding bus module, and convert the working power and output it to each module on its own key control board, thereby providing working power for each working module of each key control board, thereby synchronously starting each working module, and the subsequent cascaded key control board can start working after being connected to the previous key control board, which simplifies the power supply method.

[0074] In this embodiment, each power module is a power conversion circuit or a power conversion chip, and outputs at least one working voltage to the corresponding module. The power module can be a buck-boost circuit, an LDO voltage regulator circuit, or other structures. The specific structure can be set according to requirements and is not specifically limited here.

[0075] like Figure 4 As shown, in one embodiment, each bus module includes a resistor voltage divider circuit, the resistor voltage divider circuit is electrically connected to the controller, the resistor voltage divider circuits of each bus module are cascaded in sequence, the resistor voltage divider circuit of the first key control board 100 is connected to the power supply end of the power supply device, and the resistor voltage divider circuit of the Mth key control board is grounded;

[0076] All resistor voltage-dividing circuits are used to perform series resistor voltage-dividing on the voltage output by the power supply device, and output voltage signals of different magnitudes to the controller in the key control board respectively;

[0077] Each controller is used to determine the order of the key control board according to the voltage of the voltage signal, and feed back to the first key control board 100 through the bus module.

[0078] In this embodiment, each key control panel on the bus cooperates to control all elevator buttons. In order to accurately send commands to the corresponding key control panels and elevator buttons, a voltage sampling method is used to judge and identify the order of the key control panels, and each key control panel is sorted in order. A resistor voltage divider circuit is provided in the bus module of each key control panel. The resistor voltage divider circuit is connected to the controller, and the resistor voltage divider circuits on each key control panel are connected in series to form a series loop, and output voltage sampling signals of different sizes to the corresponding controller. Each controller determines the order of its own key control panel according to the voltage size of the acquired voltage sampling signal, and feeds back to the controller in the first key control panel 100, so as to accurately identify and control the serial number of each key control panel.

[0079] like Figure 4As shown, in one embodiment, each resistor divider circuit includes a first resistor and a second resistor. For example, the first resistor divider circuit 114A includes a first resistor R11 and a second resistor R12, and the second resistor divider circuit 214A includes a first resistor R21 and a second resistor R22.

[0080] The first end of the first resistor is the input end of the resistor voltage divider circuit, the second end of the first resistor is connected to the first end of the second resistor to form the output end of the resistor voltage divider circuit, and the second end of the second resistor is the feedback end of the resistor voltage divider circuit.

[0081] In this embodiment, in order to improve accuracy, the first resistor and the second resistor of each resistor voltage divider circuit are equal to the resistance values ​​of the first resistor and the second resistor of other resistor voltage divider circuits. When there are M key control boards, the voltage of the voltage sampling signal output by the first resistor voltage divider circuit 114A is VCC / M*(M-1), the voltage of the voltage sampling signal output by the second resistor voltage divider circuit 214A is VCC / M*(M-2), and the voltage of the voltage sampling signal output by the Mth resistor voltage divider circuit is zero. Each controller obtains each voltage sampling signal to determine its own sequence position, and feeds it back to the controller on the first key control board 100 for numbering. When different numbers of key control boards are connected, the sequence position and automatic numbering of each key control board can be automatically identified, thereby improving the driving reliability.

[0082] In one embodiment, the key control circuit also includes a storage module for storing a parameter configuration file of the key control board. The storage module is electrically connected to the power module and the controller respectively. The storage module can be a memory such as RAM, ROM, FLASH, etc.

[0083] like Figure 5 As shown, the present invention also proposes an elevator key system, which includes an elevator key panel 2, at least one external device 3 and an elevator key control device 1. The specific structure of the elevator key control device 1 refers to the above embodiment. Since the elevator key system adopts all the technical solutions of all the above embodiments, it at least has all the beneficial effects brought by the technical solutions of the above embodiments, which will not be repeated here. Among them, the elevator key panel 2 and the external device 3 are electrically connected to the elevator key control device 1 respectively.

[0084] In this embodiment, the elevator button control device 1 can be connected to one or more external devices 3, and control the corresponding elevator button trigger action according to the button control instruction issued by the external device 3. In one embodiment, the external device 3 includes at least one of a card reader, a robot and a wireless module.

[0085] The embodiments described above are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. Such modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention, and should all be included in the protection scope of the present invention.

Claims

1. An elevator button control device, characterized in that: comprising at least one key control panel cascaded via a bus; Each of the key control panels comprises at least one expansion interface for connecting an external device, a plurality of key interfaces, and a key control circuit electrically connected to the at least one expansion interface and the plurality of key interfaces respectively, and the at least one key control panel is electrically connected to the elevator keys in the elevator key panel one by one through the plurality of key interfaces respectively; The key control circuit is used for: Acquiring the corresponding elevator button status in the elevator button panel through the plurality of button interfaces, receiving the button control instruction issued by the external device through the at least one expansion interface, and parsing the button control instruction to determine the elevator button to be controlled by the external device; When it is determined that the elevator button to be controlled by the external device is an elevator button connected to another button control panel, sending the button control instruction to the corresponding button control panel; and When it is determined that the elevator button to be controlled by the external device is an elevator button connected to its own button control panel or a button control instruction sent by another button control panel is received, a button trigger signal is sent to the corresponding elevator button to control the corresponding elevator button.

2. The elevator button control device according to claim 1, characterized in that: The button control circuit is also used to obtain the trigger result of the corresponding elevator button, and feed back the trigger result to the button control board at the first position of the cascade through the bus, so that the button control board at the first position of the cascade feeds back the trigger result to the external device through the corresponding expansion interface.

3. The elevator button control device according to claim 2, characterized in that: Each of the key control circuits comprises a controller, a bus module, a key detection control module and a power module; The bus module, the key detection control module and the power module are electrically connected to the controller respectively, the controller is also electrically connected to the expansion interface, the key detection control module is also electrically connected to multiple key interfaces in the key control board, the power module is also electrically connected to the expansion interface and the key detection control module respectively, and each of the bus modules is electrically cascaded in sequence; The button detection control module is used to obtain the elevator button status corresponding to the elevator button panel through the plurality of button interfaces; The controller is used to: Receiving a key control instruction sent by the external device through the at least one expansion interface, and parsing the key control instruction to determine the elevator key to be controlled by the external device; When it is determined that the elevator button to be controlled by the external device is an elevator button connected to another button control panel, sending the button control instruction to the corresponding button control panel; and When it is determined that the elevator button to be controlled by the external device is an elevator button connected to its own button control board or a button control instruction sent by another button control board is received, a button trigger signal is sent to the button detection control module; The button detection control module is further used to control the corresponding elevator button triggering action according to the button triggering signal, and feed back the elevator button triggering result to the controller; The controller is further used to feed back the trigger result to the key control board at the first position of the cascade through the bus module, so that the key control board at the first position of the cascade feeds back the trigger result to the external device.

4. The elevator button control device according to claim 3, characterized in that: The key control panel comprises a first key control panel to an Mth key control panel cascaded through a bus, the bus modules of each key control panel are cascaded in sequence, the power input end of the power module of the first key control panel and the power input end of the bus module are electrically connected to the power supply device, the power output end of the power module of the first key control panel is electrically connected to the controller, the expansion interface, and the key detection control module of the first key control panel respectively, and the power output end of the bus module of the first key control panel is connected to the power input end of the bus module of the adjacent key control panel; The power output end of the bus module from the key control board adjacent to the first key control board to the Mth key control board is electrically connected to the corresponding power module.

5. The elevator key control device according to claim 4, characterized in that: Each of the bus modules includes a resistor voltage divider circuit, the resistor voltage divider circuit is electrically connected to the controller, the resistor voltage divider circuits of the bus modules are cascaded in sequence, the resistor voltage divider circuit of the first key control board is connected to the power supply end of the power supply device, and the resistor voltage divider circuit of the Mth key control board is grounded; All the resistor voltage divider circuits are used to perform series resistor voltage division on the voltage output by the power supply device, and output voltage signals of different magnitudes to the controller in the key control board respectively; Each of the controllers is used to determine the sequence position of the key control board according to the voltage of the voltage signal, and feed back to the first key control board through the bus module.

6. The elevator button control device according to claim 5, characterized in that: Each of the resistor voltage divider circuits comprises a first resistor and a second resistor; The first end of the first resistor is the input end of the resistor voltage divider circuit, the second end of the first resistor is connected to the first end of the second resistor to form the output end of the resistor voltage divider circuit, and the second end of the second resistor is the feedback end of the resistor voltage divider circuit.

7. The elevator key control device according to claim 3, characterized in that: The key control circuit also includes a storage module for storing a parameter configuration file of the key control panel, and the storage module is electrically connected to the power module and the controller respectively.

8. The elevator button control device according to claim 3, characterized in that: The expansion interface includes one or more of a USB interface, a network port, an RS232 interface, an RS485 interface and a TTL interface.

9. The elevator button control device according to claim 3, characterized in that: The bus module includes a CAN serial bus and / or an RS485 serial bus.

10. An elevator button system, characterized in that: The invention comprises an elevator key panel, at least one external device and the elevator key control device according to any one of claims 1 to 9, wherein the elevator key panel and the external device are electrically connected to the elevator key control device respectively.

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