Switching value optical transceiver suitable for fire-fighting remote start

Abstract

The invention relates to a switching value optical transmitter and receiver suitable for fire-fighting remote start, which comprises a switching value optical transmitter and receiver near-end machine and a switching value optical transmitter and receiver far-end machine, the switching value optical transmitter and receiver near-end machine is arranged in a monitoring center, the switching value optical transmitter and receiver far-end machine is arranged in a tunnel, a near-end machine input and output module is arranged on a mainboard of the switching value optical transmitter and receiver near-end machine, and the near-end machine input and output module is connected with the switching value optical transmitter and receiver far-end machine. The near-end machine input and output module comprises a first input module and a first output module, a mainboard of a far-end machine of the switching value optical transceiver is provided with a far-end machine input and output module, and the far-end machine input and output module comprises a second input module, a third input module and a second output module. And a fire-fighting instruction transmission path and a feedback path are respectively arranged between the switching value optical transceiver near-end machine and the switching value optical transceiver far-end machine. The super-long tunnel has the fire-fighting emergency starting function, the control core is still in the tunnel comprehensive control center, fire-fighting duty rooms and fire-fighting personnel do not need to be arranged on the tunnel site, and the labor cost is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of tunnel fire alarm, and in particular to a switch optical terminal suitable for remote start of fire fighting. Background Art

[0002] The tunnel fire alarm system is an indispensable system in the highway industry. Due to the high airtightness and high danger of tunnels, if advanced monitoring and management measures are not adopted, traffic accidents and traffic jams are very likely to occur under conditions of heavy traffic and bad weather. Therefore, remote monitoring and control of the status in tunnels has always been the focus of research in the highway industry. Generally, fans and fire pumps in tunnels need to be remotely controlled. However, in ultra-long tunnels, the remote control system started by the monitoring center cannot be set up due to the long transmission distance. Only fire duty rooms can be set up in different areas to achieve remote control. Remote control is greatly limited by distance. In tunnels over 1 km, remote control of the monitoring center cannot be achieved, and the labor cost is high. At the same time, the switch optical transceiver currently on the market does not match the operating logic of the fire alarm system. Summary of the invention

[0003] The present invention aims to solve the deficiencies of the prior art and provide a switch optical terminal suitable for fire remote start.

[0004] In order to achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a switch optical terminal suitable for remote fire start, comprising a switch optical terminal proximal machine and a switch optical terminal remote machine, the switch optical terminal proximal machine is arranged in a monitoring center, the switch optical terminal remote machine is arranged in a tunnel, a proximal machine input-output module is arranged on a main board of the switch optical terminal proximal machine, the proximal machine input-output module comprises a first input module and a first output module, a remote machine input-output module is arranged on a main board of the switch optical terminal remote machine, the remote machine input-output module comprises a second input module, a third input module, and a second output module, and a fire command transmission path and a feedback path are arranged between the switch optical terminal proximal machine and the switch optical terminal remote machine respectively;

[0005] The fire command transmission path is: the start button of the fire alarm host is connected to the first input module, the first input module is used to receive the command and convert the electrical signal into an optical signal, the first input module is connected to the second input module, the second input module is used to receive the optical signal and convert it back to an electrical signal, the second input module is connected to the second output module, the second output module is connected to the start / stop terminal of the on-site equipment in the tunnel, and the second output module is used to receive the electrical signal and drive the on-site equipment to operate;

[0006] The feedback path is: the operation signal of the field equipment is connected to the third input module, the third input module is used to receive the operation signal of the field equipment and convert it into an optical signal, the third input module is connected to the first output module, the first output module is connected to the feedback light of the fire alarm host, and the first output module is used to convert the received optical signal back into an electrical signal and finally connect it to the feedback light, so that the operator can directly observe the status of the field equipment;

[0007] The first input module adopts an independent relay coil trigger structure to independently receive each signal sent from the start button of the fire alarm host, and the first output module independently sends switch information to ensure that the feedback lights of the fire alarm host work independently without interfering with each other;

[0008] The third input module uses 24V direct current to collect the switch quantity signal of the field equipment, and the second output module uses 24V positive and negative signal mode to drive the relay coil of the field equipment to work.

[0009] Particularly, the near-end unit of the switching optical terminal and the far-end unit of the switching optical terminal are connected via an optical fiber.

[0010] In particular, the remote end of the switch optical terminal and the field equipment are connected mainly by wiring and supplemented by wireless.

[0011] In particular, a redundant input and output module is provided on the main board of the remote unit of the switching optical terminal. The redundant input and output module has the same structure as the remote unit input and output module. The redundant input and output module adopts an independent backup link to connect with the near-end unit input and output module and the field equipment, and the redundant input and output module is equipped with an independent power supply.

[0012] The beneficial effects of the present invention are:

[0013] The present invention places a fire-dedicated switch optical terminal proximal machine in the tunnel monitoring center, and uses a fire-dedicated switch optical terminal remote machine in the tunnel; one-to-one optical fiber communication is adopted between the proximal machine and the remote machine, so that the super-long tunnel also has the fire emergency start function, and the control core is still in the tunnel comprehensive control center, without setting up a fire duty room and fire duty personnel at the tunnel site, thereby reducing labor costs.

[0014] The present invention adopts a new type of optical terminal structure, and the input and output modules of the near-end machine and the far-end machine adopt a special configuration, which is suitable for the remote start of the fire alarm system; the first input module of the near-end machine adopts an independent coil trigger logic, which can ensure that each signal sent from the fire start button is received independently, and the first output module can independently send switch information to ensure that the fire button indicator light works independently without interfering with each other; the third input module of the far-end machine adopts 24V DC voltage level collection, which can enhance the stability and anti-interference of the collected signal, and the second output module adopts a 24V positive and negative signal mode, so that each switch optical terminal and the far-end machine control the equipment at a farther distance, and can effectively control the closing and opening of the relay, thereby realizing remote control of other electrical equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural block diagram of the present invention;

[0016] In the figure: 1-switching optical terminal near-end; 101-first input module; 102-first output module; 2-switching optical terminal far-end; 201-second input module; 202-third input module; 203-second output module;

[0017] The following is a detailed description of the embodiments of the present invention with reference to the accompanying drawings. DETAILED DESCRIPTION

[0018] The present invention will be further described below in conjunction with embodiments:

[0019] like Figure 1 As shown, a switch optical terminal suitable for remote start of firefighting comprises a switch optical terminal proximal end 1 and a switch optical terminal remote end 2, wherein the switch optical terminal proximal end 1 is arranged in a monitoring center, and the switch optical terminal remote end 2 is arranged in a tunnel, the switch optical terminal proximal end 1 and the switch optical terminal remote end 2 are connected via an optical fiber, the switch optical terminal remote end 2 and the on-site equipment are connected in a wiring-based and wireless-assisted manner, a proximal end input / output module is arranged on a mainboard of the switch optical terminal proximal end 1, and the proximal end input / output module comprises a first input module 101 and a first output module 102, and a remote end input / output module is arranged on a mainboard of the switch optical terminal remote end 2, and the remote end input / output module comprises a second input module 201, a third input module 202, and a second output module 203.

[0020] The main board of the remote unit 2 of the switch optical terminal is provided with a redundant input and output module, which has the same structure as the remote unit input and output module. The redundant input and output module uses an independent backup link to connect with the near-end unit input and output module and the field equipment, and the redundant input and output module is equipped with an independent power supply. When the remote unit input and output module fails, the redundant input and output module is seamlessly replaced. The setting of this redundant part can improve reliability and fault tolerance.

[0021] A fire command transmission path and a feedback path are respectively provided between the near-end device 1 of the switch optical terminal and the far-end device 2 of the switch optical terminal;

[0022] The fire command transmission path is as follows: the start button of the fire alarm host is connected to the first input module 101, the first input module 101 is used to receive commands and convert electrical signals into optical signals, the first input module 101 is connected to the second input module 201, the second input module 201 is used to receive optical signals and convert them back into electrical signals, the second input module 201 is connected to the second output module 203, the second output module 203 is connected to the start / stop terminal of the on-site equipment in the tunnel, and the second output module 203 is used to receive electrical signals and drive the on-site equipment to operate;

[0023] The feedback path is: the operation signal of the field device is connected to the third input module 202, the third input module 202 is used to receive the operation signal of the field device and convert it into an optical signal, the third input module 202 is connected to the first output module 102, the first output module 102 is connected to the feedback light of the fire alarm host, and the first output module 102 is used to convert the received optical signal back into an electrical signal and finally connect it to the feedback light, so that the operator can directly observe the status of the field device;

[0024] The first input module 101 adopts an independent relay coil trigger structure, which is used to independently receive each signal sent from the start button of the fire alarm host, and the first output module 102 independently sends switch quantity information to ensure that the feedback lights of the fire alarm host work independently without interfering with each other;

[0025] The third input module 202 uses 24V direct current to collect the switch quantity signal of the field equipment, and the second output module 203 uses a 24V positive and negative signal mode to drive the relay coil of the field equipment to work.

[0026] The present invention adopts a new type of optical terminal structure, and the input and output modules of the near-end machine and the far-end machine adopt a special configuration, which is suitable for the remote start of the fire alarm system; the first input module 101 of the near-end machine adopts an independent coil trigger logic, which can ensure that each signal sent from the fire start button is received independently, and the first output module 102 can independently send switch information to ensure that the fire button indicator light works independently without interfering with each other; the third input module 202 of the far-end machine adopts 24V DC voltage level acquisition, which can enhance the stability and anti-interference of the acquired signal, and the second output module 203 adopts a 24V positive and negative signal mode, so that each switch optical terminal and the far-end machine control the equipment at a farther distance, and can effectively control the closing and opening of the relay, thereby realizing remote control of other electrical equipment.

[0027] For example: in a certain undersea tunnel project, the tunnel is 5km long and the monitoring center is located 800m outside the north tunnel entrance. The near-end switch optical terminal 1 of the monitoring center is connected to the remote-end switch optical terminal 2 in the tunnel through optical fiber. The first input module 101 of the near-end switch optical terminal 1 of the monitoring center is connected to the start button of the fire alarm host, the feedback light of the fire alarm host is connected to the first output module 102 of the near-end switch optical terminal 1, the second output module 203 of the remote-end switch optical terminal 2 is connected to the fan start / stop terminal of the fan control box, and the third input module 202 is connected to the operation signal of the fan control box. After the system is powered on and put into use, the fan positive start signal is clicked at the fire alarm button, and the fan operation signal is normally fed back to the feedback light.

[0028] The present invention places a fire-fighting-specific switch optical terminal proximal machine 1 in the tunnel monitoring center, and uses a fire-fighting-specific switch optical terminal remote machine 2 in the tunnel; one-to-one optical fiber communication is adopted between the proximal machine and the remote machine, so that the super-long tunnel also has a fire emergency start function, and the control core is still in the tunnel comprehensive control center, without setting up a fire duty room and fire duty personnel at the tunnel site, thereby reducing labor costs.

[0029] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0030] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "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.

[0031] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; 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.

[0032] The above is an exemplary description of the present invention. Obviously, the specific implementation of the present invention is not limited to the above-mentioned method. As long as various improvements are made using the method concept and technical solution of the present invention, or they are directly applied to other occasions without improvement, they are all within the protection scope of the present invention.

Claims

1. A switch optical terminal suitable for fire remote start, characterized in that: The invention comprises a near-end switch optical terminal (1) and a far-end switch optical terminal (2), wherein the near-end switch optical terminal (1) is arranged in a monitoring center, and the far-end switch optical terminal (2) is arranged in a tunnel, a near-end input / output module is arranged on a mainboard of the near-end switch optical terminal (1), and the near-end input / output module comprises a first input module (101) and a first output module (102), a far-end input / output module is arranged on a mainboard of the far-end switch optical terminal (2), and the far-end input / output module comprises a second input module (201), a third input module (202), and a second output module (203), and a fire command transmission path and a feedback path are arranged between the near-end switch optical terminal (1) and the far-end switch optical terminal (2), respectively; The fire command transmission path is as follows: the start button of the fire alarm host is connected to the first input module (101), the first input module (101) is used to receive the command and convert the electrical signal into an optical signal, the first input module (101) is connected to the second input module (201), the second input module (201) is used to receive the optical signal and convert it back into an electrical signal, the second input module (201) is connected to the second output module (203), the second output module (203) is connected to the start / stop terminal of the on-site equipment in the tunnel, and the second output module (203) is used to receive the electrical signal and drive the on-site equipment to operate; The feedback path is as follows: the operation signal of the field device is connected to the third input module (202), the third input module (202) is used to receive the operation signal of the field device and convert it into an optical signal, the third input module (202) is connected to the first output module (102), the first output module (102) is connected to the feedback light of the fire alarm host, and the first output module (102) is used to convert the received optical signal back into an electrical signal and finally connect it to the feedback light, so that the operator can directly observe the status of the field device; The first input module (101) adopts an independent relay coil trigger structure for independently receiving each signal sent from the start button of the fire alarm host, and the first output module (102) independently sends switch quantity information to ensure that the feedback lights of the fire alarm host work independently without interfering with each other; The third input module (202) uses 24V direct current to collect switch quantity signals of the field equipment, and the second output module (203) uses a 24V positive and negative signal mode to drive the relay coil of the field equipment to work.

2. A switch optical terminal suitable for fire remote start according to claim 1, characterized in that: The near-end switch optical terminal (1) and the far-end switch optical terminal (2) are connected via optical fibers.

3. A switch optical terminal suitable for fire remote start according to claim 1, characterized in that: The switch optical terminal remote device (2) and the on-site equipment are connected by wiring as the main method and wireless as the auxiliary method.

4. A switch optical terminal suitable for fire remote start according to claim 1, characterized in that: A redundant input / output module is provided on the main board of the remote unit (2) of the switching optical terminal. The redundant input / output module has the same structure as the remote unit input / output module. The redundant input / output module is connected to the local unit input / output module and the on-site equipment using an independent backup link, and the redundant input / output module is equipped with an independent power supply.

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