Distributed controller for expressway tunnel

Abstract

The utility model provides a distributed controller for an expressway tunnel, which belongs to the field of controllers and comprises a controller box body, a state display panel, a wiring terminal, a network interface and a controller mainboard, the state display panel is arranged on the controller box body, the wiring terminal is arranged at the upper end of the controller box body, and the network interface is arranged on the controller mainboard. The network interface is arranged at the lower end of the controller box body, one side of the network interface is provided with the power supply interface, the power supply interface is arranged at the lower end of the controller box body, the controller mainboard is arranged in the controller box body, the controller mainboard is provided with electronic components, and the electronic components are respectively connected with the wiring terminal, the network interface and the power supply interface. The distributed controller provided by the utility model not only meets the monitoring requirements of traditional control equipment using DI, DO and AI signals, but also is provided with the communication network interface, can be directly connected with network communication equipment, realizes interconnection and intercommunication with other systems, avoids the problem of repeated construction when each system is used, and is simple and convenient in site construction.

Description

Technical Field

[0001] The utility model relates to the field of controllers, in particular to a distributed controller used in highway tunnels. Background Art

[0002] In recent years, the pace of new construction, renovation, and expansion of domestic highways has accelerated, leading to a growing road network. The number and variety of equipment in tunnel electromechanical systems has continued to increase, necessitating the deployment of multiple modules to collect signals from diverse devices, significantly increasing maintenance complexity and costs. Traditional tunnel monitoring utilizes PLC technology, making tunnel monitoring more efficient and intelligent, ensuring both safety and effectiveness. However, due to the numerous control devices within a tunnel, PLCs, acting as zone controllers for connecting some of the tunnel's electromechanical equipment, create complex wiring within the control cabinet. This leads to significant wiring difficulties, construction, commissioning, and operational maintenance challenges, requiring specialized personnel for ongoing maintenance, increasing costs. Furthermore, traditional PLC control methods utilize integrated control by section, and failure of a zone PLC can impact control across the entire zone. This results in low reliability and scalability, making it incapable of adapting to the continuous flow of new products.

[0003] With the continuous development of industrial automation technology, the market is gradually adopting other intelligent control technologies to monitor electromechanical equipment in highway tunnels. Chinese Patent 201921781316.3 discloses an industrial measurement and control actuator for use in tunnel corridors. This actuator is used for control, reducing the need for wiring cables. Chinese Patent 202223081727.6 discloses an industrial measurement and control actuator that can visually display wiring status, reducing construction difficulty and maintenance, and meeting general use requirements. Chinese Patent 202320688113.X discloses a PLC measurement and control actuator specifically for highway tunnels. This actuator uses Ethernet plus fiber optics instead of traditional RS485 communication to address the problem of traditional industrial measurement and control actuators being unable to meet RS485 transmission distance requirements. However, these measurement and control actuators only meet the measurement and control functions required for accessing some of the electromechanical equipment in tunnel monitoring systems and cannot directly connect to network communication equipment, resulting in duplication of equipment in actual use. Therefore, a distributed controller for highway tunnels is needed. Utility Model Content

[0004] The purpose of this utility model is to provide a distributed controller for highway tunnels, resolving existing technical problems. This device features a rational structure, compact size, and excellent heat dissipation. It can intuitively display device status and directly connect to network communication devices, enabling interconnection with other network communication systems. This solves the problem of duplicated systems in tunnel monitoring systems.

[0005] To achieve the above object, the technical solution adopted by the present utility model is as follows:

[0006] A distributed controller for a highway tunnel, comprising a controller box body, a status display panel, a terminal block, a network interface and a controller main board. The status display panel is arranged on the controller box body, the terminal block is arranged at the upper end of the controller box body, the network interface is arranged at the lower end of the controller box body, a power interface is arranged on one side of the network interface and is arranged at the lower end of the controller box body, the controller main board is arranged inside the controller box body, electronic components are arranged on the controller main board, and the electronic components are respectively connected to the terminal block, the network interface and the power interface.

[0007] Further, the electronic components include a main control unit, a wireless communication unit, a switch control unit, an RS communication unit, an analog-to-digital conversion unit, a circuit conversion unit and a digital signal detection unit, and the main control unit is respectively connected to the wireless communication unit, the switch control unit, the RS communication unit, the analog-to-digital conversion unit, the circuit conversion unit and the digital signal detection unit.

[0008] Further, the terminal block includes an RS terminal block, an analog quantity terminal block, a digital quantity output terminal block and a digital quantity input terminal block. The RS terminal block is connected to the RS communication unit, the analog quantity terminal block is connected to the analog-to-digital conversion unit, the digital quantity output terminal block is connected to the circuit conversion unit, and the digital quantity input terminal block is connected to the digital signal detection unit.

[0009] Further, the network interface includes 2 optical ports and 3 electrical ports, and the 2 optical ports and the 3 electrical ports are respectively connected to the switch control unit.

[0010] Further, the power interface is respectively connected to the main control unit and the switch control unit.

[0011] Further, a buckle is arranged at the rear side of the controller box body, and the buckle is a hanging buckle or a guide rail buckle.

[0012] Further, the controller box body includes two box bodies, an L-shaped structure fastening is arranged at the connection of the two box bodies, and the four corners of the controller box body are fixed by knob bolts.

[0013] Due to the adoption of the above technical solution, the present utility model has the following beneficial effects:

[0014] 1. The distributed controller of the present utility model not only meets the monitoring requirements for traditional devices controlled by DI, DO, and AI signals, but also has a communication network interface, can be directly connected to network communication devices, realizes interconnection and interoperability with other systems, solves the problem of monitoring multiple devices in the tunnel monitoring system, and avoids the problem of repeated construction when each system is used, thus simplifying the on-site construction.

[0015] 2. The distributed controller of the present utility model has good heat dissipation performance, stable operation, can intuitively display the interface status of the connected devices, and has multiple communication methods to meet the requirements of different usage scenarios, providing convenience for the later operation and maintenance of the devices. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is the front view of the distributed controller of the present utility model;

[0017] Figure 2 is the internal schematic diagram of the distributed controller of the present utility model;

[0018] Figure 3 is the rear view of the distributed controller of the present utility model.

[0019] In the drawings, 1 - controller housing, 2 - status display panel, 3 - RS485 wiring terminal, 4 - analog quantity wiring terminal, 5 - digital quantity output wiring terminal, 6 - digital quantity input wiring terminal, 7 - controller main board, 8 - RS485 communication unit, 9 - digital-to-analog conversion unit, 10 - circuit conversion unit, 11 - digital signal detection unit, 12 - main control unit, 13 - wireless communication unit, 14 - switch control unit, 15 - optical port, 16 - electrical port, 17 - power supply interface, 18 - knob bolt, 19 - buckle. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] In order to make the purpose, technical solutions and advantages of the present utility model clearer, the following preferred embodiments are cited with reference to the drawings and the present utility model is described in further detail. However, it should be noted that many details listed in the specification are only for enabling the reader to have a thorough understanding of one or more aspects of the present utility model, and these aspects of the present utility model can be implemented even without these specific details.

[0021] Such as Figures 1-3As shown in the figure, a distributed controller for a highway tunnel includes a controller box body 1, a status display panel 2, terminal blocks, a network interface, and a controller main board 7. The status display panel 2 is arranged on the controller box body 1, the terminal blocks are arranged at the upper end of the controller box body 1, the network interface is arranged at the lower end of the controller box body 1, a power interface 17 is arranged on one side of the network interface, and the power interface 17 is arranged at the lower end of the controller box body 1. The controller main board 7 is arranged inside the controller box body 1. To reduce the overall size, the distributed controller divides the controller main board into upper and lower parts and installs them in the controller box body. Electronic components are arranged on the controller main board 7, and the electronic components are respectively connected to the terminal blocks, the network interface, and the power interface 17. The statuses of all interfaces of the distributed controller are centrally displayed on the status display panel 2 on the front of the controller box body 1, and the status display panel 2 is arranged in a convex shape, which is conducive to directly observing the actual interface status during use. The distributed controller of the present utility model not only meets the monitoring requirements for traditional devices controlled by DI, DO, and AI signals, but also has a communication network interface, can be directly connected to network communication devices, realizes interconnection and interoperability with other systems, solves the problem of monitoring multiple devices in the tunnel monitoring system, and avoids duplicate construction problems during the use of each system, simplifying on-site construction.

[0022] As Figure 2 shown, the electronic components include a main control unit 12, a wireless communication unit 13, a switch control unit 14, an RS485 communication unit 8, a digital-to-analog conversion unit 9, a circuit conversion unit 10, and a digital signal detection unit 11. The main control unit 12 is respectively connected to the wireless communication unit 13, the switch control unit 14, the RS485 communication unit 8, the digital-to-analog conversion unit 9, the circuit conversion unit 10, and the digital signal detection unit 11. The compositions of the above units are all common structures in the prior art, so they are not described in detail. The terminal blocks include an RS485 terminal block 3, an analog terminal block 4, a digital quantity output terminal block 5, and a digital quantity input terminal block 6. The RS485 terminal block 3 is connected to the RS485 communication unit 8, the analog terminal block 4 is connected to the digital-to-analog conversion unit 9, the digital quantity output terminal block 5 is connected to the circuit conversion unit 10, and the digital quantity input terminal block 6 is connected to the digital signal detection unit 11. The network interface includes two optical ports 15 and three electrical ports 16, and the two optical ports 15 and the three electrical ports 16 are respectively connected to the switch control unit 14.

[0023] In the embodiment of the present utility model, the power interface 17 is respectively connected to the main control unit 12 and the switch control unit 14. There are two power supply methods for the distributed controller. One is DC24V access, and the other is AC220V access. It is accessed into the inside of the controller box body 1 through the power interface 17, enhancing the applicability in the industrial field.

[0024] In an embodiment of the present utility model, a buckle 19 is provided at the rear side of the controller box body 1, and the buckle 19 is a hanging buckle or a guide rail buckle. There are two installation methods for the distributed controller. One is the hanging buckle type installation, and the other is the guide rail type installation. Installing a hanging buckle or a guide rail buckle at the rear side of the distributed controller box body can achieve different installation methods and meet the needs of users in different usage environments. Similarly, the hanging buckle or the guide rail buckle is made of aluminum alloy material to ensure the stability and reliability of the installation.

[0025] In an embodiment of the present utility model, the controller box body 1 includes two box bodies, and an L-shaped structure is provided at the connection of the two box bodies for fastening. The four corners of the controller box body 1 are fixed by knob bolts 18. To ensure good heat dissipation performance and sealing performance, the controller box body 1 is made of aluminum alloy material, and the protection grade of the controller box body 1 is IP43, meeting the requirements of conventional use conditions.

[0026] When using the distributed controller of the present utility model to measure and control the connected device, the transmission signal of the connected device is transmitted to the digital or analog conversion unit through the digital quantity input terminal or the analog quantity input terminal on the distributed controller. After the input signal is detected and converted, it is transmitted to the main control unit 12. The main control unit 12 performs corresponding data processing, and the processed data can be transmitted to other upstream devices for display, and the digital quantity can also be output through the digital quantity output terminal.

[0027] The distributed controller of the present utility model supports communication methods of Modbus RTU and Modbus TCP / IP protocols. It can not only connect and communicate with devices using traditional RS485 communication with twisted pair wires, but also use fiber optic connection to transmit data to devices supporting network access, extending the transmission distance. Insert a signal conversion module into the optical port of the distributed controller to connect the optical fiber. The control instruction of the upstream acquisition device is transmitted to the signal conversion module through the optical fiber, and then transmitted to the main control unit 12 through the switch control unit 14. After corresponding processing by the main control unit 12, a control action is made on the control device, and the feedback information of the acquired device is transmitted to the signal conversion module through the switch control unit 14, and finally transmitted to the upstream acquisition device through the optical fiber, achieving the purpose of remotely monitoring the device. Through the two optical ports of the distributed controller, the monitored devices can be serially connected in pairs, and all devices can be monitored through a single transmission optical cable, improving communication stability and simplifying on-site wiring.

[0028] The distributed controller of the present utility model also has the function of a switch. By connecting other network communication devices through the electrical port of the controller, the signals of the communication devices can be transmitted through optical fiber after being processed by the switch control unit 14, realizing the function of interconnecting with other network communication systems.

[0029] The distributed controller of the present utility model also supports wireless communication mode. The control instructions of the wireless control device received through the wireless communication unit 13 are transmitted to the main control unit 12. After corresponding processing by the main control unit 12, control actions are made on the control device, and the device feedback information collected is transmitted to the wireless control device through the wireless communication unit 13. Through the wireless communication mode, it is possible to debug and maintain the device nearby without opening the box for wiring or climbing the suspension, achieving that what is visible is what can be obtained for device monitoring, which provides great convenience for device operation and maintenance.

[0030] The application of the distributed controller of the present utility model in highway tunnels will bring very beneficial effects. First of all, it can collect and process digital and analog data simultaneously without additional data acquisition devices, reducing the number of wiring cables. Secondly, it is provided with a status display panel for real-time indicating the interface status, which is convenient for installers and maintenance personnel to intuitively understand in real time. Finally, it uses aluminum alloy material and a specific design structure to improve the heat dissipation performance and operation stability, and extend the service life. In addition, the distributed controller provides multiple communication modes to meet different communication usage scenarios, and has the function of a switch, which can connect each electromechanical system in the tunnel to the distributed controller to achieve interconnection and interoperability between systems, avoiding the problem of repetitive construction.

[0031] The above are only the preferred embodiments of the present utility model. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present utility model, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the present utility model.

Claims

1. A distributed controller for a highway tunnel, characterized in that: It includes a controller box body (1), a status display panel (2), terminal blocks, a network interface, and a controller main board (7). The status display panel (2) is arranged on the controller box body (1). The terminal blocks are arranged at the upper end of the controller box body (1). The network interface is arranged at the lower end of the controller box body (1). A power interface (17) is arranged on one side of the network interface and is also arranged at the lower end of the controller box body (1). The controller main board (7) is arranged inside the controller box body (1). Electronic components are arranged on the controller main board (7), and the electronic components are respectively connected to the terminal blocks, the network interface, and the power interface (17).

2. The distributed controller for a highway tunnel according to claim 1, wherein: The electronic components include a main control unit (12), a wireless communication unit (13), a switch control unit (14), an RS485 communication unit (8), a digital-to-analog conversion unit (9), a circuit conversion unit (10), and a digital signal detection unit (11). The main control unit (12) is respectively connected to the wireless communication unit (13), the switch control unit (14), the RS485 communication unit (8), the digital-to-analog conversion unit (9), the circuit conversion unit (10), and the digital signal detection unit (11).

3. The distributed controller for a highway tunnel according to claim 1, characterized in that: The terminal blocks include an RS485 terminal block (3), an analog quantity terminal block (4), a digital quantity output terminal block (5), and a digital quantity input terminal block (6). The RS485 terminal block (3) is connected to the RS485 communication unit (8). The analog quantity terminal block (4) is connected to the digital-to-analog conversion unit (9). The digital quantity output terminal block (5) is connected to the circuit conversion unit (10). The digital quantity input terminal block (6) is connected to the digital signal detection unit (11).

4. The distributed controller for a highway tunnel according to claim 1, characterized in that: The network interface includes 2 optical ports (15) and 3 electrical ports (16). The 2 optical ports (15) and the 3 electrical ports (16) are respectively connected to the switch control unit (14).

5. The distributed controller for a highway tunnel according to claim 1, characterized in that: The power interface (17) is respectively connected to the main control unit (12) and the switch control unit (14).

6. The distributed controller for a highway tunnel according to claim 1, wherein: A buckle (19) is arranged at the rear side of the controller box body (1), and the buckle (19) is a hanging buckle or a guide rail buckle.

7. A distributed controller for a highway tunnel according to claim 1, characterized in that: The controller box body (1) includes two box bodies. An L-shaped structure is arranged at the connection of the two box bodies for fastening. The four corners of the controller box body (1) are fixed by knob bolts (18).

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