Tunnel wireless communication optical fiber repeater

Abstract

The utility model provides a tunnel wireless communication optical fiber repeater. One side of a metal housing is provided with a power supply interface, an IO interface and a temperature and humidity detector. The IO interface comprises an optical fiber interface, an RJ45 network interface, a radio frequency interface, an RS485 / RS23 serial port interface and a plurality of gas detection device joints, the gas detection device joints are used for being connected with gas detection sensors, a power supply module and a control circuit board are installed in the metal shell, the power supply module is connected with the control circuit board and the power supply interface, and the control circuit board is connected with the power supply interface. The control circuit board is provided with a multifunctional acquisition module, a digital intermediate frequency board, an amplifier module and a filter module. The repeater can collect various tunnel data, such as temperature, humidity, gas concentration and the like, provides comprehensive tunnel environment information for operation and maintenance personnel, and facilitates timely processing, thereby ensuring continuity and reliability of wireless communication signals in a tunnel.

Description

TECHNICAL FIELD

[0001] The utility model relates to a tunnel monitoring equipment, concretely relates to a tunnel wireless communication optical fiber repeater. BACKGROUND

[0002] With the development of economy, the scale of highway tunnel is expanding continuously. Tunnel is a kind of tubular road, and the relatively closed space is needed to be deployed with special dispatch intercom, public security fire control, frequency modulation broadcast and other special wireless signal coverage in addition to the deployment of operator mobile phone signal in tunnel, to further guarantee the communication convenience of emergency rescue and tunnel safe operation.

[0003] In order to realize the coverage of tunnel private network wireless signal, the mode of optical fiber repeater is generally adopted, and the wireless signal is realized in the whole tunnel by the mode of near-end machine, far-end machine and coverage antenna leak cable. Due to the influence of different geological conditions, the working condition environment of tunnel is generally relatively poor, and the high temperature, high humidity, high corrosion, toxic and harmful gas diffusion and other harsh working conditions occur from time to time, which poses a great challenge to the wireless communication repeater with high power operation. UTILITY MODEL CONTENT

[0004] In view of the defects of the prior art, the utility model provides a tunnel wireless communication optical fiber repeater, the repeater can adapt to the complex and changeable working condition environment in tunnel, improve the stability and reliability of wireless communication signal, and is provided with a plurality of IO interfaces at the same time, can collect a plurality of tunnel data, and is convenient for operation and maintenance personnel to process in time, so as to ensure the continuity and reliability of wireless communication signal in tunnel. In order to realize the above purpose, the technical scheme of the utility model is as follows:

[0005] A tunnel wireless communication optical fiber repeater, the tunnel wireless communication optical fiber repeater contains metal shell,

[0006] A power supply interface, an IO interface and a temperature and humidity detector are installed on one side of the metal shell.

[0007] The IO interface contains at least one optical fiber interface, an RJ45 network interface, a radio frequency interface, an RS485 / RS23 serial port interface and at least one gas sensor connector, the RS485 / RS23 serial port interface is used for connecting tunnel safety sensor, and the gas sensor connector is connected with gas detection sensor.

[0008] A power supply module and a control circuit board are installed in the metal shell, the power supply module is connected with the control circuit board and the power supply interface, and a multifunctional acquisition module, a digital intermediate frequency board, an amplifier module and a filter module are installed on the control circuit board,

[0009] The multifunctional acquisition module is provided with a plurality of signal input ends, and the radio frequency interface, the RS485 / RS23 serial port interface, the temperature and humidity detector, and the gas detection device joint are connected with the corresponding signal input ends through signal lines at one end inside the metal shell,

[0010] The digital intermediate frequency board is connected with the optical fiber interface, the RJ45 network interface, the radio frequency interface, the amplifier module, and the multifunctional acquisition module.

[0011] Further, the metal shell is composed of an upper cover and a lower cover connected by turning, one end of the upper cover and the lower cover is connected by a hinge or a pin shaft, and the other end is fixedly connected by a buckle or a screw, and the contact end surface of the upper cover and the lower cover is provided with a sealing ring;

[0012] The outer surfaces of the upper cover and the lower cover are provided with heat dissipation fins, and the inner surfaces of the upper cover and the lower cover are pasted with graphene heat conduction pads, and the multifunctional acquisition module, the power module, the digital intermediate frequency board, the amplifier module, and the filter module are in contact with the graphene heat conduction pads.

[0013] Further, the two sides of the lower cover are connected with "L"-shaped mounting feet through bolts, and the mounting holes are arranged in the mounting feet.

[0014] Further, the power supply interface, the upper optical fiber interface, the lower optical fiber interface, the RJ45 network interface are arranged on one side of the upper cover,

[0015] The radio frequency interface, the RS485 / RS23 serial port interface, the temperature and humidity detector, a gas sensor joint, and a second gas sensor joint are arranged on one side of the lower cover.

[0016] Further, a reserved port is mounted at the bottom of the lower cover, the reserved port is connected with the multifunctional acquisition module, and the reserved port is used for accessing the data of non-serial port output signals in the tunnel weak current monitoring system.

[0017] Further, the RS485 / RS23 serial port interface is connected with weak current detection equipment, and the weak current detection equipment includes ventilation environment monitoring equipment, lighting environment monitoring equipment, fire alarm monitoring equipment, and intelligent traffic monitoring equipment.

[0018] Further, the gas detection sensor comprises a plug, a filter screen upper cover, a gas collection plate, and a gas detection probe, one end of the plug is detachably connected in communication with the gas sensor joint, the filter screen upper cover is mounted at the other end of the plug, the gas collection plate is mounted in the filter screen upper cover, and the gas detection probe is arranged on the gas collection plate.

[0019] The gas detection sensor is used for detecting one or more gas components of carbon monoxide, carbon dioxide, oxygen, hydrogen sulfide, methane, nitric oxide, nitrogen dioxide, ammonia, and ozone.

[0020] The utility model discloses compact structure design is reasonable, can adapt to the complex and changeable working condition environment in tunnel, improves the stability and reliability of wireless communication signal. The metal shell not only provides good protection, still through the design of radiating fin and graphene heat conduction pad, effectively promotes the heat dissipation efficiency of internal electronic component, ensures the stable operation of equipment under the harsh environment such as high temperature, high humidity. At the same time, the design of multiple IO interfaces makes the repeater can collect various tunnel data, such as temperature, humidity, gas concentration etc., provides comprehensive tunnel environment information for operation and maintenance personnel, is convenient for processing in time, thereby ensures the continuity and reliability of wireless communication signal in tunnel. In addition, the design of the reserved port also provides the convenience for possible future expansion, so that the repeater can meet the long-term development needs of tunnel wireless communication system. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to more clearly illustrate the technical scheme in the embodiments of the utility model, the following will introduce the drawings needed to be used in the embodiment or prior art description, obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can also be obtained according to these drawings without creative labor.

[0022] Figure 1 It is a front view of the utility model one kind tunnel wireless communication optical fiber repeater station;

[0023] Figure 2 It is a side view of the utility model tunnel wireless communication optical fiber repeater station;

[0024] Figure 3 It is the internal structure diagram of the utility model tunnel wireless communication optical fiber repeater station after upper and lower covers are opened;

[0025] Figure 4 It is the structure diagram of gas detection device;

[0026] Figure 5 It is the gas collection board structure diagram in the gas detection device. DETAILED DESCRIPTION

[0027] In the following description, a large number of specific details are given in order to provide a more thorough understanding of the utility model. However, it is obvious for those skilled in the art that the utility model can be implemented without one or more of these details. In other examples, in order to avoid confusion with the utility model, some technical features known in the art are not described.

[0028] In order to thoroughly understand the utility model, the detailed steps and detailed structure will be proposed in the following description, so as to explain the technical scheme of the utility model. The preferred embodiments of the utility model are described in detail as follows, however, in addition to these detailed descriptions, the utility model can also have other implementation manners.

[0029] Referring to Figures 1-5 As shown in the utility model provides a kind of tunnel wireless communication optical fiber repeater, tunnel wireless communication optical fiber repeater includes metal shell.The metal shell is composed of upper cover 1 and lower cover 2 of flip connection, one end of upper cover 1 and lower cover 2 is rotatably connected by hinge or pin shaft, and the other end is fixedly connected by buckle or screw, and the contact end surface of upper cover 1 and lower cover 2 is equipped with dust seal ring, to ensure internal sealing.

[0030] The both sides of lower cover 2 are connected with the "L" shaped mounting foot by bolt, and the mounting hole is provided in the mounting foot, so as to facilitate the installation of tunnel wireless communication optical fiber repeater on the mounting bracket in the tunnel.

[0031] Power supply interface 3, upper optical fiber interface 4, lower optical fiber interface 5, RJ45 network interface 6 are provided on one side of upper cover 1.RF interface 7, RS485 / RS23 serial interface 8, temperature and humidity detector 9, No.1 gas sensor joint 10, No.2 gas sensor joint 11, reserved port 12 are provided on one side of lower cover 2.

[0032] RS485 / RS23 serial interface 8 can access the data of more weak current detection equipment in the tunnel, such as ventilation environment monitoring equipment, lighting environment monitoring equipment, fire alarm monitoring equipment, intelligent traffic monitoring equipment, etc.

[0033] Temperature and humidity detector 9, No.1 gas sensor joint 10 and No.2 gas sensor joint 11 are installed at the bottom of lower cover 2, which solves the real-time measurement of optical fiber repeater operating environment parameters, such as temperature and humidity, oxygen, methane and other environmental parameters, and the detection components of No.1 gas sensor joint and No.2 gas sensor joint can be configured according to requirements, such as commonly used, carbon monoxide, carbon dioxide, oxygen, hydrogen sulfide, methane, nitrogen monoxide, nitrogen dioxide, ammonia, ozone and other gas detection.

[0034] The reserved port 12 interface can conveniently access other non-serial output signal data of weak current monitoring system in the tunnel, such as network port, analog quantity, switching quantity and other data information.

[0035] The power module 19 and the control circuit board are mounted in the metal shell, the power module 19 is connected with the control circuit board and the power supply interface 3, and the multifunctional acquisition module 18, the digital intermediate frequency board 20, the amplifier module 21 and the filter module 22 are mounted on the control circuit board. The digital intermediate frequency board 20 is connected with the optical fiber interface, the RJ45 network interface 6, the radio frequency interface 7, the amplifier module 21, the multifunctional acquisition module 18.

[0036] The multifunctional acquisition module 18 is provided with a plurality of signal input ends, the radio frequency interface 7, the RS485 / RS23 serial port interface 8 and the temperature and humidity detector 9 are connected with corresponding signal input ends through signal lines at one end inside the metal shell. The multifunctional acquisition module 18 supports access to data of the RS485 / RS23 serial port interface 8, the temperature and humidity detector 9, the first gas sensor connector 10, the second gas sensor connector 11 and the reserved port 12, such as data of the COVI detector, the oxygen detector, the toxic and harmful gas detector, the illumination detector, the brightness detector, the color temperature detector, the double-wavelength flame detector, the temperature sensing cable, the microwave vehicle detector, the ultrahigh detector and other non-body detection equipment installed in the tunnel, which are transmitted to the multifunctional acquisition module 18 through the RS485 / RS23 interface 8; the temperature and humidity detector 9, the first gas sensor connector 10 and the second gas sensor connector 11 are directly collected by the multifunctional acquisition module 18 as the body self-provided equipment. The multifunctional acquisition module 18 analyzes, screens and arranges tunnel environment monitoring data, ventilation monitoring data, lighting monitoring data, fire monitoring data and intelligent traffic monitoring data of the body equipment and / or non-body equipment, and then transmits the data to the monitoring center through the digital intermediate frequency board 20 and the optical fiber.

[0037] The temperature and humidity detector 9 can collect temperature and humidity data of the installation position of the repeater; the first gas sensor connector 10 and the second gas sensor connector 11 can install corresponding gas detection sensors according to the installation environment to detect corresponding gases. The detection components of the gas detection sensors can be configured according to requirements, such as commonly used gases, carbon monoxide, carbon dioxide, oxygen, hydrogen sulfide, methane, nitric oxide, nitrogen dioxide, ammonia, ozone and the like.

[0038] In an optional embodiment, the first gas sensor connector 10 and the second gas sensor connector 11 are arranged on the lower cover 2, and two gas detection sensors are connected with the first gas sensor connector 10 and the second gas sensor connector 11 respectively in a buckle type direct insertion mode. Compared with the traditional screw rotation installation mode, the buckle type direct insertion mode can save time and eliminate the problem of difficult replacement caused by thread aging and rusting. Figure 4 and Figure 5As shown, the gas detection sensor comprises a connector, a filter cover 13, a gas collection plate 14, and a gas detection probe 15, one end of the connector is detachably connected with the first gas sensor connector 10 or the second gas sensor connector 11, the other end of the connector is provided with the filter cover 13, the gas collection plate 14 is installed in the filter cover 13, and the gas detection probe 15 is arranged on the gas collection plate 14. The gas detection probe 15 collects the gas in the tunnel through the filter cover 13 and detects the gas composition through the gas collection plate 14.

[0039] The inner surfaces of the upper cover 1 and the lower cover 2 are respectively attached with graphene upper heat-conducting pads 16 and graphene lower heat-conducting pads 17. The power module 19 and the digital intermediate frequency board 20 are installed on the graphene upper heat-conducting pads 16 of the inner surface of the upper cover 1, and the high-power amplifier module 21, the filter module 22 and the multifunctional collection module 18 are installed on the heat-conducting pads 17 of the inner surface of the lower cover 2. The installation mode ensures that the heat generated by all the internal high-power components is quickly transmitted to the shell through the graphene heat-conducting pads, and the heat is quickly dissipated to the outside through the shell in contact with the outside. In addition, the outer surfaces of the upper cover 1 and the lower cover 2 are provided with heat dissipation fins, which can expand the heat exchange area and achieve better heat dissipation effect.

[0040] The utility model has the advantages that:

[0041] 1) The detection problem of the operation environment of the optical fiber repeater and the tunnel environment is solved, the real-time monitoring alarm of the operation environment of the special network communication equipment can guarantee the normal operation of the optical fiber repeater, reduce the failure rate and guarantee the reliability of the emergency communication system. When disaster occurs, the continuity of the communication network is improved, which plays an important role in rescue and disaster relief.

[0042] 2) The new tunnel wireless optical fiber repeater can also access more tunnel operation and environment detector data through the serial port, such as the data of the tunnel monitoring equipment, such as the COVI detector, the wind speed and direction detector, the illumination brightness detector, the temperature and humidity detector, the oxygen detector, the toxic and harmful gas detector, the fire alarm and the intelligent traffic detector. The data are sent to the monitoring center at the same time, so that the tunnel center platform can timely master the tunnel operation environment data and make the data link redundant.

[0043] 3) The new tunnel wireless optical fiber repeater can form a wireless communication linkage induction through the tunnel environment data detected by itself and the monitoring data of the tunnel environment detector accessed nearby, such as the FM frequency modulation broadcast system of the tunnel special network, which realizes emergency insertion and publishes emergency induction information or prompt information to passing vehicles through the vehicle radio, thereby reducing the influence of the abnormal tunnel environment on the traffic operation.

[0044] The preferred embodiments of the present application are described above. It should be understood that the present application is not limited to the specific embodiments described above, wherein the devices and structures not described in detail should be understood as being implemented in the ordinary way in the art; any person skilled in the art, without departing from the scope of the technical scheme of the present application, can make many possible changes and modifications to the technical scheme of the present application by using the disclosed methods and technical contents, or modify equivalent embodiments, which does not affect the essential content of the present application. Therefore, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present application, without departing from the content of the technical scheme of the present application, still belongs to the scope of protection of the technical scheme of the present application.

Claims

1. A tunnel wireless communication fiber optic repeater, the tunnel wireless communication fiber optic repeater comprising a metal casing, characterized in that, A power supply interface (3), an I / O interface, and a temperature and humidity detector (9) are installed on one side of the metal casing. The IO interface includes at least one optical fiber interface, an RJ45 network interface (6), a radio frequency interface (7), an RS485 / RS23 serial port interface (8), and at least one gas sensor connector. The RS485 / RS23 serial port interface (8) is used to connect a tunnel safety sensor, and the gas sensor connector is connected to a gas detection sensor. A power module (19) and a control circuit board are installed inside the metal casing. The power module (19) is connected to the control circuit board and the power supply interface (3). A multi-functional acquisition module (18), a digital intermediate frequency board (20), an amplifier module (21), and a filter module (22) are installed on the control circuit board. The multi-functional acquisition module (18) is provided with multiple signal input terminals. The radio frequency interface (7), the RS485 / RS23 serial port interface (8), the temperature and humidity detector (9), and the gas sensor connector are respectively connected to the corresponding signal input terminals through signal lines at one end inside the metal casing. The digital intermediate frequency board (20) is connected to the optical fiber interface, the RJ45 network interface (6), the radio frequency interface (7), the amplifier module (21), and the multi-functional acquisition module (18).

2. The tunnel wireless communication fiber optic repeater as described in claim 1, characterized in that, The metal casing consists of an upper cover (1) and a lower cover (2) that are flipped together. One end of the upper cover (1) and the lower cover (2) are rotatably connected by a hinge or a pin, and the other end is fixedly connected by a buckle or a screw. The contact surfaces of the upper cover (1) and the lower cover (2) are provided with sealing rings. The outer surfaces of the upper cover (1) and the lower cover (2) are provided with heat dissipation fins, and graphene thermal pads are attached to the inner surfaces of the upper cover (1) and the lower cover (2). The multi-functional acquisition module (18), the power supply module (19), the digital intermediate frequency board (20), the amplifier module (21), and the filter module (22) are in contact with the graphene thermal pads.

3. A tunnel wireless communication fiber optic repeater as described in claim 2, characterized in that, The lower cover (2) has "L"-shaped mounting feet (2-1) connected to both sides by bolts, and the mounting feet (2-1) have mounting holes.

4. A tunnel wireless communication fiber optic repeater as described in claim 2, characterized in that, The power supply interface (3), the upstream fiber optic interface (4), the downstream fiber optic interface (5), and the RJ45 network interface (6) are provided on one side of the upper cover (1). The radio frequency interface (7), the RS485 / RS23 serial port interface (8), the temperature and humidity detector (9), the first gas sensor connector (10), and the second gas sensor connector (11) are provided on one side of the lower cover (2).

5. A tunnel wireless communication fiber optic repeater as described in claim 4, characterized in that, The bottom of the lower cover (2) is equipped with a reserved port (12), which is connected to the multi-functional acquisition module (18). The reserved port (12) is used to access the data of the non-serial port output signal of the weak current monitoring system in the tunnel.

6. A tunnel wireless communication fiber optic repeater as described in claim 1, characterized in that, The RS485 / RS23 serial port interface (8) is connected to the low-voltage detection equipment, which includes ventilation environment monitoring equipment, lighting environment monitoring equipment, fire alarm monitoring equipment, and intelligent traffic monitoring equipment.

7. A tunnel wireless communication fiber optic repeater as described in claim 4, characterized in that, The gas detection sensor includes a connector, a filter cover (13), a gas collection plate (14), and a gas detection probe (15). One end of the connector is detachably connected to a gas sensor connector, and the filter cover (13) is installed at the other end of the connector. The gas collection plate (14) is installed inside the filter cover (13), and the gas collection plate (14) is provided with a gas detection probe (15). The gas detection sensor is used to detect one or more gaseous components, including carbon monoxide, carbon dioxide, oxygen, hydrogen sulfide, methane, nitric oxide, nitrogen dioxide, ammonia, and ozone.

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