Light curtain device based on communication

Abstract

The utility model relates to the technical field of elevator safety equipment, in particular to a light curtain device based on communication, which comprises a mounting column, a control module, a wire holder, a light curtain component, an ambient light sensor, a signal wire, a network wire and a control wire. Two groups of mounting columns are arranged, light curtain assemblies are arranged on two opposite surfaces of the two groups of mounting columns, ambient light sensors are arranged on two opposite surfaces of the two groups of mounting columns, wire holders are arranged at the bottoms of the mounting columns, a signal wire is arranged at the bottom of one group of wire holders, and a control module is arranged at one end of the signal wire. The signal wire is electrically connected with the wire holder and the control module, one side of the control module is provided with a network wire, the network wire is electrically connected with the control module, one side of the control module is provided with a control wire, and the control wire is electrically connected with the control module; by adding a communication function, the light curtain device can be directly communicated with the control module, the system integration process is simplified, and the wiring and maintenance cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of elevator safety equipment, in particular to a communication-based light curtain device. Background Art

[0002] The elevator light curtain is a light-type elevator door safety protection device. The working principle of the light curtain is to continuously scan the car door area through the infrared transmitting tube in the transmitter to form a dense infrared protection light curtain. When any beam of light is blocked, the control system will immediately output a door opening signal to stop the elevator door from closing and reverse to open. The elevator door can only be closed normally after the obstacle leaves, thereby avoiding the occurrence of people being trapped.

[0003] It is difficult for existing elevator light curtain devices to communicate with PLC controllers, which makes the integration level of elevator light curtain devices low, increases wiring and maintenance costs, and is not convenient to use a control system to uniformly control multiple groups of elevator light curtain devices.

[0004] Therefore, in response to the above problems, a communication-based light curtain device can be designed so that the light curtain device can communicate directly with the PLC controller, and a network connection function can be added so that the light curtain device can be connected to the industrial Ethernet to achieve remote monitoring and management. Utility Model Content

[0005] In order to overcome the problem that most elevator light curtain devices are difficult to communicate with PLC controllers, which makes the elevator light curtain device less integrated, increases wiring and maintenance costs, and is not convenient to use a control system to uniformly control multiple groups of elevator light curtain devices.

[0006] The technical solution of the utility model is: a communication-based light curtain device, including a mounting column, a control module, a wiring socket, a light curtain component, an ambient light sensor, a signal wire, a network wire and a control wire; two groups of mounting columns are provided, light curtain components are provided on opposite sides of the two groups of mounting columns, ambient light sensors are provided on opposite sides of the two groups of mounting columns, wiring sockets are provided at the bottom of the mounting columns, a signal wire is provided at the bottom of one group of wiring sockets, a control module is provided at one end of the signal wire, the signal wire is electrically connected to the wiring socket and the control module, a network wire is provided on one side of the control module, the network wire is electrically connected to the control module, a control wire is provided on one side of the control module, and the control wire is electrically connected to the control module.

[0007] Preferably, the light curtain assembly is installed by setting installation posts to form a light curtain for detecting an object. The ambient light sensor is used to sense the ambient light intensity, which is convenient for correcting the electrical signal formed by the light curtain. The wiring base is used to connect the wires required for the operation of the device. The signal wires are used to transmit the electrical signal generated by the light curtain assembly and the ambient light information generated by the ambient light receiver to the control module. The control module analyzes the actual situation by integrating multiple groups of signals to reduce the occurrence of errors. After confirming that an object blocks the light curtain, the control wire is used to control the elevator door to remain open. The control module can communicate with the control terminal through the network wire and upload the data, which is convenient for the control terminal to manage multiple groups of light curtain devices.

[0008] Preferably, the light curtain assembly includes a transmitter and a receiver. Multiple groups of transmitters are arranged on one side of a group of installation posts, and multiple groups of receivers are arranged on one side of the other group of installation posts. The number of transmitters and receivers is the same.

[0009] Preferably, the transmitters and receivers are arranged vertically and at equal intervals, and the emitting surface of the transmitter faces the receiving surface of the receiver.

[0010] Preferably, an upper light axis mark is provided above the uppermost group of transmitters or receivers, and a lower light axis mark is provided at the bottom of the lowermost group of transmitters or receivers.

[0011] Preferably, an indicator light is provided at the bottom of the lower light axis mark. Indicator lights are provided on both groups of installation posts. The ambient light sensor is located above the upper light axis mark.

[0012] Preferably, a synchronization wire is provided at the bottom of the wiring base, and the synchronization wire is electrically connected to the two wiring bases.

[0013] Preferably, three groups of power wires are provided at the bottom of the wiring base. The three groups of power wires are electrically connected to the two wiring bases, and the three groups of power wires are also electrically connected to an external power supply.

[0014] The beneficial effects of the present utility model:

[0015] 1. The light curtain device can directly communicate with the control module at high speed, simplifies the system integration process, reduces the wiring and maintenance costs, and adds an ambient light sensor to sense the ambient light intensity, enabling the light curtain to automatically adjust the sensitivity according to the change of ambient light, ensuring accurate detection under different lighting conditions. It also adds a network communication function, enabling the light curtain to access the industrial Ethernet for remote monitoring and management. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 Shown is a three-dimensional structural schematic diagram of a communication-based light curtain device of the present utility model;

[0017] Figure 2The figure shows a three-dimensional structural schematic diagram of the mounting column of a light curtain device based on communication according to the present utility model;

[0018] Figure 3 The figure shows a three-dimensional structural schematic diagram of the wiring base of a light curtain device based on communication according to the present utility model;

[0019] Figure 4 The figure shows a three-dimensional structural schematic diagram of the control wire of a light curtain device based on communication according to the present utility model.

[0020] Explanation of reference numerals: 1, mounting column; 101, upper optical axis mark; 102, lower optical axis mark; 103, indicator light; 2, control module; 3, wiring base; 301, synchronization wire; 302, power wire; 401, transmitter; 402, receiver; 5, ambient light sensor; 6, signal wire; 7, network wire; 8, control wire. Detailed implementation mode

[0021] The present utility model will be further described below in conjunction with the drawings and embodiments.

[0022] Please refer to Figures 1 - 4 , the present utility model provides an embodiment: a light curtain device based on communication, including a mounting column 1, a control module 2, a wiring base 3, a light curtain assembly, an ambient light sensor 5, a signal wire 6, a network wire 7 and a control wire 8; there are two groups of mounting columns 1, light curtain assemblies are arranged on the opposite sides of the two groups of mounting columns 1, ambient light sensors 5 are arranged on the opposite sides of the two groups of mounting columns 1, a wiring base 3 is arranged at the bottom of the mounting column 1, a signal wire 6 is arranged at the bottom of one group of wiring bases 3, one end of the signal wire 6 is provided with a control module 2, the signal wire 6 is electrically connected to the wiring base 3 and the control module 2, a network wire 7 is arranged on one side of the control module 2, the network wire 7 is electrically connected to the control module 2, a control wire 8 is arranged on one side of the control module 2, and the control wire 8 is electrically connected to the control module 2.

[0023] Please refer to Figure 2, in this embodiment, the light curtain assembly includes a transmitter 401 and a receiver 402. On one side of a group of mounting posts 1, multiple groups of transmitters 401 are provided, and on one side of another group of mounting posts 1, multiple groups of receivers 402 are provided. The number of transmitters 401 and receivers 402 is the same. The transmitters 401 and receivers 402 are arranged vertically with the same spacing. The emitting surface of the transmitter 401 faces the receiving surface of the receiver 402. Above the uppermost group of transmitters 401 or receivers 402, an upper optical axis mark 101 is provided. Below the lowermost group of transmitters 401 or receivers 402, a lower optical axis mark 102 is provided. Below the lower optical axis mark 102, an indicator light 103 is provided. Two groups of mounting posts 1 are both provided with indicator lights 103. The ambient light sensor 5 is located above the upper optical axis mark 101. Infrared rays are emitted by multiple groups of transmitters 401 to form a light curtain. The receiver 402 is used to receive the light curtain to generate an electrical signal. The effective range of the light curtain is marked by the upper optical axis mark 101 and the lower optical axis mark 102. One group of indicator lights 103 is a power supply light, which emits red light when powered on. The other group of indicator lights 103 is a working light. The light curtain normally emits green light and emits red light when the light curtain is blocked.

[0024] Please refer to Figure 3 , in this embodiment, a synchronous wire 301 is provided at the bottom of the wiring base 3. The synchronous wire 301 is electrically connected to two groups of wiring bases 3. Three power wires 302 are provided at the bottom of the wiring base 3. The three power wires 302 are electrically connected to two groups of wiring bases 3. The three power wires 302 are also electrically connected to an external power supply. The information of two groups of wiring bases 3 is synchronized through the synchronous wire 301. The three power wires 302 are divided into positive, negative, and ground to ensure normal power supply of the device.

[0025] When an object passes through, the transmitter 401 emits infrared rays to the receiver 402, and multiple groups of infrared rays form a light curtain. When an object passes through the light curtain, some infrared rays will be blocked. The receiver 402 that does not receive the light generates an electrical signal, and the electrical signal is transmitted to the control module 2 through the signal wire 6. The control module 2 analyzes the signal. After confirming that it is not an error, the control wire 8 is used to control the opening of the elevator door to prevent squeezing the object. At the same time, the control module 2 can communicate with the control center through the network wire 7 and report the information for the unified management of multiple groups of elevators.

[0026] During the use of the device, the ambient light sensor 5 can sense the intensity of the surrounding ambient light and transmit the data to the control module 2. The control module 2 can correct the information processing decision according to the ambient light data to reduce the occurrence of errors.

[0027] Through the above steps, the light curtain component is installed by setting the installation posts 1 to form a light curtain for detecting objects. The ambient light sensor 5 is used to sense the ambient light intensity, which is convenient for correcting the electrical signals formed by the light curtain. The wiring base 3 is used to connect the wires required for the operation of the device. The signal wires 6 are used to transmit the electrical signals generated by the light curtain component and the ambient light information generated by the ambient light sensor 5 to the control module 2. The control module 2 analyzes the actual situation by integrating multiple groups of signals to reduce the occurrence of errors. After confirming that an object blocks the light curtain, the control wire 8 is used to control the elevator door to remain open. The control module 2 can communicate with the control terminal through the network wire 7 to upload data, which is convenient for the control terminal to manage multiple groups of light curtain devices.

[0028] The embodiments of the present invention have been described in detail above in conjunction with the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the purpose of the present invention.

Claims

1. A communication-based light curtain device, comprising a mounting column (1); characterized in that: The invention also comprises a control module (2), a wiring socket (3), a light curtain assembly, an ambient light sensor (5), a signal wire (6), a network wire (7) and a control wire (8); two groups of mounting posts (1) are provided, the light curtain assemblies are provided on two opposite sides of the two groups of mounting posts (1), the ambient light sensors (5) are provided on two opposite sides of the two groups of mounting posts (1), a wiring socket (3) is provided at the bottom of the mounting posts (1), a signal wire (6) is provided at the bottom of one group of wiring sockets (3), a control module (2) is provided at one end of the signal wire (6), the signal wire (6) is electrically connected to the wiring socket (3) and the control module (2), a network wire (7) is provided on one side of the control module (2), the network wire (7) is electrically connected to the control module (2), a control wire (8) is provided on one side of the control module (2), and the control wire (8) is electrically connected to the control module (2).

2. A communication-based light curtain device according to claim 1, characterized in that: The light curtain assembly comprises a transmitter (401) and a receiver (402). One side of one group of mounting columns (1) is provided with a plurality of groups of transmitters (401), and one side of another group of mounting columns (1) is provided with a plurality of groups of receivers (402). The number of transmitters (401) and receivers (402) is the same.

3. A communication-based light curtain device according to claim 2, characterized in that: The transmitter (401) and the receiver (402) are arranged vertically with the same spacing, and the transmitting surface of the transmitter (401) faces the receiving surface of the receiver (402).

4. A communication-based light curtain device according to claim 2, characterized in that: An upper optical axis mark (101) is arranged above the uppermost group of transmitters (401) or receivers (402), and a lower optical axis mark (102) is arranged at the bottom of the lowermost group of transmitters (401) or receivers (402).

5. The communication-based light curtain device according to claim 3, characterized in that: An indicator light (103) is provided at the bottom of the lower optical axis mark (102), and both sets of mounting columns (1) are provided with indicator lights (103). The ambient light sensor (5) is located above the upper optical axis mark (101).

6. The communication-based light curtain device according to claim 1, characterized in that: A synchronization wire (301) is arranged at the bottom of the wiring seat (3), and the synchronization wire (301) is electrically connected to the two sets of wiring seats (3).

7. The communication-based light curtain device according to claim 1, characterized in that: Three groups of power wires (302) are arranged at the bottom of the wiring seat (3), and the three groups of power wires (302) are electrically connected to the two groups of wiring seats (3), and the three groups of power wires (302) are also electrically connected to an external power source.

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