Communication circuit for elevator car IC card and elevator

Abstract

The utility model discloses a communication circuit for an IC card of an elevator car and an elevator, and the communication circuit comprises an IC card module which is used for reading storage information in the IC card and generating an authorization instruction; the CTB communication board is connected with the IC card module through a serial communication line; the one or more CCB instruction boards are used for collecting floor registration instructions and sending the floor registration instructions to the CTB communication board; the floor registration instruction is an electric signal generated when an elevator floor button is pressed; the IC card module sends an authorization instruction of an IC card to the CTB communication board through a serial communication line; the CTB communication board is used for sending a floor registration instruction and an authorization instruction of the IC card to the main control board; according to the utility model, the floor registration instruction is sent to the CTB communication board in a serial communication manner, so that serial communication between the CCB instruction board and the CTB communication board is realized, modification of signal lines is avoided, wire harnesses in a control box are reduced, the working efficiency is improved, and the complexity of wiring and debugging is reduced.

Description

Technical Field

[0001] The utility model relates to the field of elevator communication, in particular to a communication circuit for an IC card in an elevator car and an elevator. Background Art

[0002] Nowadays, elevators have become an indispensable means of transportation in people's lives, bringing great convenience to travel. However, due to the large number of residents and visitors in the community, many inconveniences have arisen in the use of elevators. The elevator IC card management system provides convenience to users and improves the safety of elevator use.

[0003] The traditional elevator IC card system is a parallel communication method: that is, the IC card reader of the elevator control system and the elevator controller transmit multi-bit data signals simultaneously through multiple physical lines. In the elevator IC card system, the floor button signal is usually output in parallel, that is, each floor button corresponds to one signal line. When IC card control is used, Figure 2 As shown, the original signal lines of the floor buttons (A1N, A2N, ..., A16N) will be modified, that is, the signal lines of all floor buttons are connected in parallel with the input and output ports of the IC card controller, so as to decide whether to allow the elevator to stop at the corresponding floor according to the IC card authority.

[0004] Specifically, the modification of the signal line requires cutting off the signal line of each floor button and stripping off the metal wire, and then connecting the signal lines of all floor buttons in parallel and connecting them to the input end of the IC card controller, so that the IC card controller can obtain the selection signals of all floors at one time. After verifying the legitimacy and authority of the card, the IC card controller decides which floors can be selected based on the card data.

[0005] However, this modification method or parallel communication method has the following problems:

[0006] 1. The higher the floor, the more wires are connected, the larger the wire harness in the control box, and the more space it occupies;

[0007] 2. The workload during production assembly and on-site inspection is very large and prone to errors;

[0008] 3. Layer selector is also required for layer control, which is also more expensive. Utility Model Content

[0009] In order to reduce the wiring harness in the control box, improve work efficiency, and reduce the complexity of debugging, the utility model proposes a communication circuit for an elevator car IC card, which realizes serial communication between an IC card module and an elevator main control board. The elevator includes a main control board, and the communication circuit includes:

[0010] An IC card module is used to read the stored information in the IC card and generate an authorization instruction; the IC card stores the floor information of the set floor;

[0011] CTB communication board, the CTB communication board is connected to the IC card module via a serial communication line;

[0012] One or more CCB command boards, used to collect floor registration instructions and send them to the CTB communication board; the floor registration instructions are electrical signals generated when the elevator floor buttons are pressed;

[0013] The IC card module sends an authorization instruction of the IC card to the CTB communication board via a serial communication line;

[0014] The CTB communication board is used to send floor registration instructions and IC card authorization instructions to the main control board.

[0015] Furthermore, the CCB command board includes multiple JP connectors and command detection circuits; the JP connectors correspond one-to-one to the elevator floor buttons and the command detection circuits respectively; the command detection circuit is used to collect floor registration instructions; the JP connector is used to send the floor registration instructions collected by the command detection circuit to the corresponding CCB command board.

[0016] Furthermore, the IC card module includes: a first 485 communication port, a second 485 communication port, a GND port and a power port.

[0017] Furthermore, the CTB communication board includes: a first MOD port, a second MOD port, a COM port and a power port.

[0018] Furthermore, the first 485 communication port is communicatively connected to the first MOD port to form a first serial communication line; the second 485 communication port is communicatively connected to the second MOD port to form a second serial communication line.

[0019] Furthermore, the GND port is connected to the COM port; the power port in the IC card module is connected to the power port in the CTB communication board.

[0020] Furthermore, the IC card module sends an authorization instruction of the IC card to the CTB communication board through the first serial communication line.

[0021] Furthermore, the JP connector includes: a positive pole, a first switch contact, a second switch contact and a negative pole.

[0022] Furthermore, the instruction detection circuit includes: a first resistor, a first switch, and a first LED lamp; wherein: one end of the first resistor is connected to the negative pole of the JP connector, and the other end is connected to the negative end of the first LED lamp; the positive end of the first LED lamp is connected to the positive pole of the JP connector; one end of the first switch is connected to the second switch contact of the JP connector, and the other end is connected to the first switch contact of the JP connector.

[0023] The utility model also proposes an elevator, comprising:

[0024] Main control panel;

[0025] A communication circuit as described above;

[0026] The communication circuit is communicatively connected with the main control board;

[0027] The main control board controls the elevator to open the elevator door at the corresponding floor based on the authorization instruction and the floor registration instruction sent by the communication circuit.

[0028] Compared with the prior art, the utility model has at least the following beneficial effects:

[0029] The communication circuit proposed by the utility model comprises: an IC card module, which is used for reading the storage information in the IC card and generating an authorization instruction; a CTB communication board, wherein the CTB communication board is connected to the IC card module via a serial communication line; one or more CCB command boards, which are used for collecting floor registration instructions and sending them to the CTB communication board; the floor registration instruction is an electrical signal generated when the elevator floor button is pressed; the IC card module sends the authorization instruction of the IC card to the CTB communication board via the serial communication line; the CTB communication board is used for sending the floor registration instruction and the authorization instruction of the IC card to the main control board; the utility model sends the floor registration instruction to the CTB communication board in a serial communication manner, realizes the serial communication between the CCB command board and the CTB communication board, avoids the modification of the signal line, reduces the wiring harness in the control box, improves the work efficiency, and reduces the complexity of wiring and debugging. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 A communication circuit diagram for an elevator car IC card;

[0031] Figure 2 The present invention is a parallel communication circuit diagram between an IC card reader and a floor button signal in the prior art. DETAILED DESCRIPTION

[0032] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0033] In order to reduce the wiring harness in the control box, improve work efficiency and reduce the complexity of debugging, such as Figure 1 As shown, the utility model proposes a communication circuit for an elevator car IC card, the elevator includes a main control board, and the communication circuit includes:

[0034] An IC card module including a card reader and an IC controller, wherein the card reader is used to read the stored information in the IC card, and the IC controller is used to generate an authorization instruction for the corresponding floor according to the read stored information; the IC card stores the floor information of the set floor (the floor information includes the floor number);

[0035] The IC controller in the IC card module includes: a first 485 communication port 485-A, a second 485 communication port 485-B, a GND port and a power port +24V.

[0036] It should be noted that the IC card is an integrated circuit card, and the chip of the IC card has the ability to write data and store floor information.

[0037] CTB communication board, the CTB communication board is connected to the IC controller via a serial communication line; the CTB communication board comprises a first communication port CN1; the communication port CN1 comprises: a first MOD port MOD+, a second MOD port MOD-, a COM port and a power port +24V.

[0038] The CTB communication board also includes: a second communication port CN7.

[0039] The first 485 communication port 485-A is communicatively connected to the first MOD port MOD+ to form a first serial communication line; the second 485 communication port 485-B is communicatively connected to the second MOD port MOD- to form a second serial communication line; the GND port is connected to the COM port; the power port +24V in the IC controller is connected to the power port +24V in the CTB communication board.

[0040] In this embodiment, the main control board supplies power to the IC controller, and the IC controller supplies power to the CTB communication board; the main control board is also used to send relevant control instructions to the IC controller through the second serial communication line.

[0041] One or more CCB command boards, used to collect floor registration instructions and send them to the CTB communication board; the floor registration instructions are electrical signals generated when the elevator floor buttons are pressed;

[0042] It should be noted that the number of CCB command boards depends on the number of floors of the elevator. In the elevator system of large or high-rise buildings, due to the large number of floors, the complexity and number of commands that the elevator needs to process increase significantly. A single CCB command board may not be able to meet the processing requirements of all floor signals, so by configuring multiple CCB command boards, the control tasks can be shared and the processing capacity of the system can be improved.

[0043] The CCB command board includes multiple JP connectors and command detection circuits; the JP connectors correspond to the elevator floor buttons and the command detection circuits one by one; the command detection circuit is used to collect floor registration instructions; the JP connector is used to send the floor registration instructions collected by the command detection circuit to the corresponding CCB command board.

[0044] The JP connector includes: a positive pole position 1 , a first switch contact 2 , a second switch contact 3 and a negative pole position 4 .

[0045] by Figure 1 The JP connector JP1 is specifically described, and the instruction detection circuit corresponding to JP1 includes: a first resistor R1, a first switch A1N, and a first LED lamp LED1; wherein: one end of the first resistor R1 is connected to the negative pole position 4 of the JP connector, and the other end is connected to the negative end of the first LED lamp LED1; the positive end of the first LED lamp LED1 is connected to the positive pole position 1 of the JP connector; one end of the first switch A1N is connected to the second switch contact 2 of the JP connector, and the other end is connected to the first switch contact 2 of the JP connector.

[0046] The CCB command board also includes a first communication port CN1 and a second communication port CN2;

[0047] The second communication port CN7 of the CTB communication board is communicatively connected with the second communication port CN2 of the CCB command board CCB1; the CCB command board sends a floor registration instruction to the second communication port of the CTB communication board through the second communication port.

[0048] When there are multiple CCB command boards, in two adjacent CCB command boards, the first communication port CN1 of the previous CCB command board is communicatively connected with the second communication port CN2 of the next CCB command board.

[0049] The IC controller in the IC card module sends the authorization instruction of the IC card to the CTB communication board through the serial communication line; specifically, the IC controller sends the authorization instruction of the IC card to the CTB communication board through the first serial communication line.

[0050] The CTB communication board is used to send floor registration instructions and IC card authorization instructions to the main control board.

[0051] This embodiment also provides an elevator, comprising:

[0052] Main control panel;

[0053] A communication circuit as described above;

[0054] The communication circuit is communicatively connected with the main control board;

[0055] The main control board controls the elevator to open the elevator door at the corresponding floor based on the authorization instruction and the floor registration instruction sent by the communication circuit.

[0056] Specifically, when the floor in the floor registration instruction is consistent with the floor corresponding to the authorization instruction, the main control panel will control the elevator to open the elevator door at the corresponding floor.

[0057] The communication circuit proposed by the utility model comprises: an IC card module, which is used for reading the storage information in the IC card and generating an authorization instruction; a CTB communication board, wherein the CTB communication board is connected to the IC card module via a serial communication line; one or more CCB command boards, which are used for collecting floor registration instructions and sending them to the CTB communication board; the floor registration instruction is an electrical signal generated when the elevator floor button is pressed; the IC card module sends the authorization instruction of the IC card to the CTB communication board via the serial communication line; the CTB communication board is used for sending the floor registration instruction and the authorization instruction of the IC card to the main control board; the utility model sends the floor registration instruction to the CTB communication board in a serial communication manner, realizes the serial communication between the CCB command board and the CTB communication board, avoids the modification of the signal line, reduces the wiring harness in the control box, improves the work efficiency, and reduces the complexity of wiring and debugging.

[0058] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back...) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0059] In addition, in the present invention, the descriptions of "first", "second", "one", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0060] In the present invention, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0061] In addition, the technical solutions between the various embodiments of the present invention can be combined with each other, but it must be based on the fact that ordinary technicians in the field can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

Claims

1. A communication circuit for an elevator car IC card, the elevator comprising a main control board, characterized in that: The communication circuit comprises: An IC card module is used to read the stored information in the IC card and generate an authorization instruction; the IC card stores the floor information of the set floor; CTB communication board, the CTB communication board is connected to the IC card module via a serial communication line; One or more CCB command boards, used to collect floor registration instructions and send them to the CTB communication board; the floor registration instructions are electrical signals generated when the elevator floor buttons are pressed; The IC card module sends an authorization instruction of the IC card to the CTB communication board via a serial communication line; The CTB communication board is used to send floor registration instructions and IC card authorization instructions to the main control board.

2. A communication circuit for an elevator car IC card according to claim 1, characterized in that: The CCB command board includes multiple JP connectors and command detection circuits; the JP connectors correspond to the elevator floor buttons and the command detection circuits one by one; the command detection circuit is used to collect floor registration instructions; the JP connector is used to send the floor registration instructions collected by the command detection circuit to the corresponding CCB command board.

3. A communication circuit for an elevator car IC card according to claim 2, characterized in that: The IC card module includes: a first 485 communication port, a second 485 communication port, a GND port and a power port.

4. A communication circuit for an elevator car IC card according to claim 3, characterized in that: The CTB communication board includes: a first MOD port, a second MOD port, a COM port and a power port.

5. A communication circuit for an elevator car IC card according to claim 4, characterized in that: The first 485 communication port is connected to the first MOD port for communication to form a first serial communication line; the second 485 communication port is connected to the second MOD port for communication to form a second serial communication line.

6. A communication circuit for an elevator car IC card according to claim 5, characterized in that: The GND port is connected to the COM port; the power port in the IC card module is connected to the power port in the CTB communication board.

7. A communication circuit for an elevator car IC card according to claim 6, characterized in that: The IC card module sends an authorization instruction of the IC card to the CTB communication board through the first serial communication line.

8. A communication circuit for an elevator car IC card according to claim 7, characterized in that: The JP connector includes: a positive pole, a first switch contact, a second switch contact and a negative pole.

9. A communication circuit for an elevator car IC card according to claim 8, characterized in that: The instruction detection circuit includes: a first resistor, a first switch, and a first LED lamp; wherein: one end of the first resistor is connected to the negative pole of the JP connector, and the other end is connected to the negative end of the first LED lamp; the positive end of the first LED lamp is connected to the positive pole of the JP connector; one end of the first switch is connected to the second switch contact of the JP connector, and the other end is connected to the first switch contact of the JP connector.

10. An elevator, characterized in that: include: Main control panel; The communication circuit according to any one of claims 1 to 9; The communication circuit is communicatively connected with the main control board; The main control board controls the elevator to open the elevator door at the corresponding floor based on the authorization instruction and the floor registration instruction sent by the communication circuit.

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