Strong current interference prevention device for tunnel marker lamp

Abstract

The utility model discloses a strong current interference prevention device for tunnel marker lamps, which comprises a host and a plurality of marker lamps arranged in a tunnel, a first signal conversion module is arranged in the host, and a second signal conversion module, a bus module and a power supply conversion module are arranged in front of the first marker lamp. The first signal conversion module and the second signal conversion module are both CAN-485 signal conversion modules, the first signal conversion module and the second signal conversion module are connected through a CAN port, the signal output end of the second signal conversion module is connected with the signal input end of the bus module, and the signal output end of the bus module is connected with the marker lamp; the main machine is connected with the first marker lamp through the two CAN (controller area network)-485 signal conversion modules, and the communication is carried out by adopting CAN signals, so that the strong current interference in the middle of a line can be reduced, various faults caused by the strong current interference to the communication are avoided, and the marker lamps in the whole tunnel can be subjected to good communication control.

Description

Technical Field

[0001] The utility model relates to an anti-interference device, in particular to an anti-strong electricity interference device for tunnel marker lights. Background Art

[0002] At present, when the marker lights in the subway tunnel are controlled by communication, they are all controlled by a remote host. From the host to the first marker light in the tunnel, due to the existence of strong electricity interference, communication failures occur frequently, and each failure form is different each time, which brings great difficulties to the control and maintenance of the marker lights in the tunnel. Summary of the Utility Model

[0003] The technical task of the utility model is to provide an anti-strong electricity interference device for tunnel marker lights aiming at the above deficiencies of the prior art.

[0004] The technical solution adopted by the utility model to solve its technical problems is: an anti-strong electricity interference device for tunnel marker lights, including a host and several marker lights arranged in the tunnel. A first signal conversion module is arranged in the host, and a second signal conversion module, a bus module and a power conversion module are arranged in front of the first marker light. The first signal conversion module and the second signal conversion module are both CAN-485 signal conversion modules. The first signal conversion module and the second signal conversion module are connected through a CAN port. The signal output end of the second signal conversion module is connected to the signal input end of the bus module. The signal output end of the bus module is connected to the marker light;

[0005] The power conversion module and the marker light are both connected to the power supply in the tunnel. There are two power output ports on the power conversion module. One of the power output ports is connected to the power input port of the second signal conversion module. The two power output ports on the power conversion module are respectively connected to the internal and external power input ports on the bus module.

[0006] The advantages of the utility model: between the host and the first marker light, they are connected through two CAN-485 signal conversion modules and communicate with CAN signals, so that the strong electricity interference brought in the middle of the line can be reduced, and various failures caused by strong electricity interference to communication can be avoided. Finally, the second signal conversion module converts the CAN signal into a 485 signal for the communication control of the marker light, so that the marker lights in the whole tunnel can be well communicated and controlled. Description of the Drawings

[0007] Figure 1 It is a schematic structural diagram of the utility model.

[0008] In the figure: host 1, marker light 2, first signal conversion module 3, second signal conversion module 4, bus module 5, power conversion module 6. Detailed implementation mode

[0009] The following will make a detailed description of the present utility model in conjunction with the accompanying drawings of the specification.

[0010] As shown in the figure, an anti-strong electric interference device for a tunnel marker lamp includes a main unit 1 and a number of marker lamps 2 arranged in the tunnel. A first signal conversion module 3 is provided in the main unit 1. A second signal conversion module 4, a bus module 5, and a power conversion module 6 are provided in front of the first marker lamp 2. Both the first signal conversion module 3 and the second signal conversion module 4 are CAN-485 signal conversion modules. The first signal conversion module 3 and the second signal conversion module 4 are connected through a CAN port. The signal output end of the second signal conversion module 4 is connected to the signal input end of the bus module 5. The signal output end of the bus module 5 is connected to the marker lamp 2.

[0011] Both the power conversion module 6 and the marker lamp 2 are connected to the power supply in the tunnel. There are two power output ports on the power conversion module 6. One of the power output ports is connected to the power input port of the second signal conversion module 4. The two power output ports on the power conversion module 6 are respectively connected to the internal and external power input ports on the bus module 5.

[0012] Its working principle is as follows: First, the first signal conversion module 3 is provided in the main unit 1, and the second signal conversion module 4, the bus module 5, and the power module 6 are all provided in front of the first marker lamp 2. During operation, the first signal conversion module 3 and the second signal conversion module 4 communicate through CAN signals, thereby reducing the situation of strong electric interference encountered by the signals midway. Then, the second signal conversion module 4 converts the CAN signal into a 485 signal and transmits it to the bus module 5. Finally, the bus module 5 transmits the signal to each marker lamp 2 to complete the communication control of the marker lamp. During this process, both the power conversion module 6 and the marker lamp 2 are connected to the 24v power supply from the tunnel site. The power conversion module 6 converts the input 24v power supply into 5v power supply and then connects it to the second signal conversion module 4 and the bus module 5 respectively for power supply to the two.

[0013] The above are only the embodiments of the present utility model, and do not limit the patent scope of the present utility model accordingly. Any equivalent structure or equivalent process transformation made by using the content of the specification and drawings of the present utility model, or directly or indirectly applied in other related technical fields, shall be equally included in the patent protection scope of the present utility model.

Claims

1. An anti-strong electric interference device for tunnel marker lights, comprising a host and a plurality of marker lights arranged in a tunnel, characterized in that: A first signal conversion module is provided inside the host, and a second signal conversion module, a bus module, and a power conversion module are provided in front of the first indicator light. Both the first signal conversion module and the second signal conversion module are CAN-485 signal conversion modules. The first signal conversion module and the second signal conversion module are connected through a CAN port. The signal output end of the second signal conversion module is connected to the signal input end of the bus module, and the signal output end of the bus module is connected to the indicator light. Both the power conversion module and the indicator light are connected to the power supply in the tunnel. There are two power output ports on the power conversion module. One of the power output ports is connected to the power input port of the second signal conversion module, and the two power output ports on the power conversion module are respectively connected to the internal and external power input ports on the bus module.

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