CN116455844A - Mining communication method based on intrinsic safety type network switch - Google Patents
Mining communication method based on intrinsic safety type network switch Download PDFInfo
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- CN116455844A CN116455844A CN202310400503.7A CN202310400503A CN116455844A CN 116455844 A CN116455844 A CN 116455844A CN 202310400503 A CN202310400503 A CN 202310400503A CN 116455844 A CN116455844 A CN 116455844A
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- 230000006854 communication Effects 0.000 title claims abstract description 168
- 238000004891 communication Methods 0.000 title claims abstract description 168
- 238000000034 method Methods 0.000 title claims abstract description 30
- 238000005065 mining Methods 0.000 title description 2
- 238000012360 testing method Methods 0.000 claims description 24
- 230000007175 bidirectional communication Effects 0.000 claims description 6
- 238000009434 installation Methods 0.000 claims 1
- 238000012986 modification Methods 0.000 description 4
- 230000004048 modification Effects 0.000 description 4
- 238000006467 substitution reaction Methods 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L49/00—Packet switching elements
- H04L49/20—Support for services
- H04L49/201—Multicast operation; Broadcast operation
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
- H04W16/24—Cell structures
- H04W16/26—Cell enhancers or enhancement, e.g. for tunnels, building shadow
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Abstract
The invention relates to the field of underground communication, in particular to an underground communication method based on an intrinsic safety type network switch, which comprises the steps of determining the space range and the inclination angle of each roadway in a well and the coverage range of a signal area of the intrinsic safety type network switch; installing an intrinsic safety type network switch at the entrance of an underground mine tunnel and in each underground tunnel, and arranging a portable intelligent terminal to be in wireless connection with the intrinsic safety type network switch; acquiring the number of portable intelligent terminals in each roadway under the well; different communication modes are adopted according to the number of the portable intelligent terminals; when the portable intelligent terminal reaches the signal coverage limit distance, generating an alarm signal and sending the alarm signal to an intrinsic safety type network switch of a corresponding roadway; the intrinsic safety type network switch corresponding to the roadway broadcasts the alarm signal, and under the premise of guaranteeing the underground communication quality, the coverage range of the communication signal is enlarged through the portable intelligent terminal, and meanwhile the safety of underground operators is protected.
Description
Technical Field
The invention relates to the field of submerged communication, in particular to a submerged communication method based on an intrinsic safety type network switch.
Background
At present, more than 99% of underground coal mines have no online network, and under the special environment with complex environment and no closed network, the data acquisition and updating of system equipment all need the on-site operation of workers to the first line.
The Chinese patent publication No. CN107654258A discloses an underground networking-free remote communication method, which comprises the steps that a wifi module gathers data generated by communication equipment, the wifi module is in communication connection with a remote controller, the data pre-stored in the wifi module are transmitted to the remote controller, and the remote controller stores the received data. When the remote controller returns to the ground for charging, the remote controller is in communication connection with the server, data stored in the remote controller is transmitted to the server through 4G, meanwhile, the server transmits updated data back to the remote controller, and the remote controller stores the returned updated data; when the remote controller returns to the working place to remotely control the communication equipment, the remote controller is in communication connection with the wifi module, and update data in the remote controller are transmitted to the wifi module. However, the invention does not adjust the communication method when the number of remote controllers in the well is different, so that the communication area is fixed and the communication is discontinuous.
In the prior art, only a single wired or wireless communication mode is adopted, so that the problems that the communication area is fixed, the communication is incoherent and the safety of underground operators cannot be effectively ensured exist.
Disclosure of Invention
Therefore, the invention provides an underground communication method based on an intrinsic safety type network switch, which can realize a communication method combining wires and wireless, is used for solving the problems of fixed communication area and incoherent communication in the prior art, and effectively ensures the safety of underground operators.
In order to achieve the above object, the present invention provides an underground communication method based on an intrinsic safety type network switch, the method comprising:
determining the space range, the inclination angle and the signal area coverage range of an intrinsic safety type network switch of each roadway in the pit;
installing an intrinsic safety type network switch at an entrance of an underground mine hole and in each underground tunnel according to the spatial range and the inclination angle of each tunnel and the coverage range of a signal area of the intrinsic safety type network switch;
setting a portable intelligent terminal to be in wireless connection with the intrinsic safety type network switch, and testing the portable intelligent terminal to obtain the number of the portable intelligent terminals in each underground roadway;
adopting different communication modes according to the number of portable intelligent terminals in each underground roadway;
when the portable intelligent terminal reaches the signal coverage limit distance, generating an alarm signal and sending the alarm signal to an intrinsic safety type network switch of a corresponding roadway;
and broadcasting the alarm signal by the intrinsic safety type network switch of the corresponding roadway.
Further, the determining the spatial range, the inclination angle and the signal area coverage of the intrinsic safety type network switch of each roadway comprises:
detecting the height H, the length a, the width d and the vertical drop H of each roadway under the well by adopting a laser detector;
according to formula (1), calculating the space range S of each tunnel, wherein c is the speed of light in vacuum,
calculating the inclination angle theta of each roadway according to the formula (2), wherein theta is more than or equal to 0 and less than
Determining the signal area coverage area S1 of the intrinsic safety type network switch according to the maximum number n supported by the ports of the intrinsic safety type network switch and the network line length l through a formula (3), wherein pi is a circumference ratio,
further, the installing the intrinsic safety type network switch at the entrance of the mine hole and in each roadway in the pit according to the spatial range and the inclination angle of each roadway and the coverage range of the signal area of the intrinsic safety type network switch comprises:
at least one intrinsic safety type network switch is arranged at the entrance of the mine tunnel, and the intrinsic safety type network switch at the entrance of the mine tunnel is connected with the intrinsic safety type network switch and the mine dispatching station in each tunnel in the pit;
determining the number of the intrinsic safety type network switches installed in each underground roadway according to the spatial range and the inclination angle of each underground roadway and the signal coverage range of the intrinsic safety type network switches;
and the intrinsic safety type network switches are equidistantly arranged in each underground roadway.
Further, the determining the number of the intrinsic safety type network switches installed in each roadway in the well according to the spatial range and the inclination angle of each roadway and the signal coverage range of the intrinsic safety type network switch comprises:
determining the number M of the intrinsic safety type network switches installed in each roadway in the well according to a formula (4) according to the coverage range of the signal area of the intrinsic safety type network switch, the spatial range of each roadway and the inclination angle of each roadway,
further, the step of testing the portable intelligent terminals, the step of obtaining the number of the portable intelligent terminals in each roadway comprises the following steps:
the method comprises the steps that a test starting time t0 and a test ending time t1 are set, a portable intelligent terminal sends preset test information to an intrinsic safety type network switch in a roadway during test, and the number of the portable intelligent terminals in the roadway is determined according to the number of the received test information.
Further, according to the number of portable intelligent terminals in the roadway, adopting different communication modes includes:
when the number of the portable intelligent terminals in the roadway is 1, a first communication mode is adopted;
when the number of the portable intelligent terminals in the roadway is more than 1 and less than 10, adopting a second communication mode;
when the number of the portable intelligent terminals in the roadway is more than or equal to 10, adopting a third communication mode;
the first communication mode is that the portable intelligent terminal in the roadway is in direct communication with the intrinsic safety type network switch in the roadway, the second communication mode is that the portable intelligent terminal in the roadway is in full communication with the intrinsic safety type network switch in the roadway, and the portable intelligent terminal in the roadway and the intrinsic safety type network switch in the roadway construct a communication network.
Further, the full communication between the portable intelligent terminal in the roadway and the intrinsic safety type network switch in the roadway comprises:
the portable intelligent terminal in the tunnel is regarded as a mobile node, and the intrinsic safety type network switch in the tunnel is regarded as a fixed node;
the fixed node establishes two-way communication with a mobile node in the coverage area of the signal area;
the mobile node establishing communication with the fixed node performs two-way communication with all mobile nodes in the coverage area of the signal area.
Further, the communication network established by the portable intelligent terminal in the tunnel and the intrinsic safety type network switch in the tunnel comprises:
the method comprises the steps of presetting the maximum communication number of a fixed node as k1, presetting the maximum communication number of a mobile node as 2, and setting the number of the mobile nodes in the coverage range of a signal area of the fixed node as k2, wherein k1 is more than 2;
when k2 is less than or equal to k1, the fixed node establishes two-way communication with all mobile nodes in the coverage area of the area, and the mobile node which establishes communication with the fixed node selects all mobile nodes with signal intensity in the coverage area of the signal area to establish two-way communication so as to establish a communication network;
when k2 is more than k1, the fixed node compares the received signal intensities of the mobile nodes, selects k1 mobile nodes with larger signal intensities for bidirectional communication, and establishes bidirectional communication with the mobile node with the largest signal intensity in the coverage area of the mobile node selection signal area for establishing communication with the fixed node, so as to construct a communication network.
Further, when the portable intelligent terminal reaches the signal coverage limit distance, the intrinsic safety type network switch for generating and transmitting the alarm signal to the corresponding roadway comprises:
the intrinsic safety type network switch is provided with a signal coverage limit distance Lg, and the portable intelligent terminal is provided with a signal coverage limit distance Ld;
when the first communication mode or the second communication mode is adopted, generating an alarm signal when the linear distance between the portable intelligent terminal in the roadway and the intrinsic safety type network switch for establishing communication with the portable intelligent terminal exceeds Lg;
when the third communication mode is adopted, when the linear distance between the portable intelligent terminal in the roadway and the intrinsic safety type network switch for establishing communication exceeds Lg or the linear distance between the portable intelligent terminal in the roadway and the intrinsic safety type network switch for establishing communication exceeds Ld, an alarm signal is generated.
Further, the broadcasting the alarm signal by the intrinsic safety type network switch corresponding to the roadway comprises:
the intrinsic safety type network switch of the corresponding roadway transmits an alarm signal to the intrinsic safety type network switch of the last roadway, and the intrinsic safety type network switch connected with the alarm signal transmits the alarm signal to the intrinsic safety type network switch of the last roadway until the alarm signal reaches the intrinsic safety type network switch at the entrance of the mine tunnel, and the intrinsic safety type network switch at the entrance of the mine tunnel transmits the alarm signal to a dispatching station on the mine;
and the intrinsic safety type network switch which receives the alarm signal sends the alarm signal to all portable intelligent terminals which establish communication with the intrinsic safety type network switch.
Compared with the prior art, the invention has the beneficial effects that the intrinsic safety type network switch is arranged at the entrance of the mine tunnel and in each tunnel in the pit according to the determined space range, the inclination angle and the signal area coverage range of the intrinsic safety type network switch, the portable intelligent terminal is arranged to be in wireless connection with the intrinsic safety type network switch, and different communication modes are adopted; when the portable intelligent terminal reaches the signal coverage limit distance, generating an alarm signal and sending the alarm signal to an intrinsic safety type network switch of a corresponding roadway; the intrinsic safety type network switch corresponding to the roadway broadcasts the alarm signal, and under the premise of guaranteeing the underground communication quality, the coverage range of the communication signal is enlarged through the portable intelligent terminal, and meanwhile the safety of underground operators is protected.
In particular, the invention detects the height, length, width and vertical fall of each roadway underground by adopting a laser detector, obtains the space range and the inclination angle of each roadway by calculation, determines the signal area coverage of the intrinsic safety type network switch according to the maximum port support number and the network line length of the intrinsic safety type network switch, installs the intrinsic safety type network switch at the entrance of an underground mine hole and in the underground roadway according to the calculated parameters, provides wired coverage for the whole mine field, and ensures the basic requirement of mine field communication.
In particular, the portable intelligent terminals are provided with the wireless signal transmitting function, and each portable intelligent terminal is equivalent to a small wireless base station, is in wireless connection with an intrinsic safety type network switch in a roadway and is connected with each other in a wireless manner, so that the underground communication range is improved.
In particular, the invention obtains the number of the portable intelligent terminals in each mine tunnel through carrying out periodic test on the portable intelligent terminals, adopts different communication modes according to the number of the portable intelligent terminals in the tunnel, and ensures the stability of communication on the premise of ensuring the communication quality.
In particular, the invention ensures the communication stability by directly communicating with the intrinsic safety type network switch when only one portable intelligent terminal is arranged in the tunnel, and ensures the communication quality and the communication range by communicating with the portable intelligent terminals in the coverage area of all signal areas and the intrinsic safety type network switch when a plurality of portable intelligent terminals are arranged in the tunnel, and sets the maximum connection quantity for the intrinsic safety type network switch when a large number of portable intelligent terminals are arranged in the tunnel, connects the portable intelligent terminals with the maximum signal intensity in the coverage area of the signal, and connects the portable intelligent terminals with the maximum signal intensity in the coverage area of the signal areas by connecting the portable intelligent terminals with the intrinsic safety type network switch, thereby ensuring the communication speed and avoiding the condition of signal channel congestion.
In particular, the signal coverage limit distance is set for the intrinsic safety type network switch and the portable intelligent terminal respectively, and when the portable intelligent terminal exceeds the communication limit distance, namely, the portable intelligent terminal immediately breaks away from the coverage range of a signal area, an alarm signal is generated, and the alarm signal is transmitted to the whole mine step by step, so that underground operators are reminded of going away from the communication area, and the safety of the underground operators is ensured.
Drawings
Fig. 1 is a schematic flow chart of an underground communication method based on an intrinsic safety type network switch according to an embodiment of the present invention;
fig. 2 is a flow chart of another method for communication under mine based on an intrinsic safety type network switch according to an embodiment of the present invention.
Detailed Description
In order that the objects and advantages of the invention will become more apparent, the invention will be further described with reference to the following examples; it should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
Preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are merely for explaining the technical principles of the present invention, and are not intended to limit the scope of the present invention.
It should be noted that, in the description of the present invention, terms such as "upper," "lower," "left," "right," "inner," "outer," and the like indicate directions or positional relationships based on the directions or positional relationships shown in the drawings, which are merely for convenience of description, and do not indicate or imply that the apparatus or elements must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention.
Furthermore, it should be noted that, in the description of the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the terms in the present invention can be understood by those skilled in the art according to the specific circumstances.
Referring to fig. 1, an embodiment of the present invention provides an underground communication method based on an intrinsic safety network switch, including:
step S100: determining the space range, the inclination angle and the signal area coverage range of an intrinsic safety type network switch of each roadway in the pit;
step S200: installing an intrinsic safety type network switch at an entrance of an underground mine hole and in each underground tunnel according to the spatial range and the inclination angle of each tunnel and the coverage range of a signal area of the intrinsic safety type network switch;
step S300: setting a portable intelligent terminal to be in wireless connection with the intrinsic safety type network switch, and testing the portable intelligent terminal to obtain the number of the portable intelligent terminals in each underground roadway;
step S400: adopting different communication modes according to the number of portable intelligent terminals in each underground roadway;
step S500: when the portable intelligent terminal reaches the signal coverage limit distance, generating an alarm signal and sending the alarm signal to an intrinsic safety type network switch of a corresponding roadway;
step S600: and broadcasting the alarm signal by the intrinsic safety type network switch of the corresponding roadway.
Specifically, the application scenario of the embodiment of the invention is that an intrinsic safety network switch is arranged at an entrance of an underground mine tunnel arranged on the ground, a plurality of tunnels can be connected to the entrance of the underground mine tunnel, the positions, the spatial ranges, the inclination angles and the like of the tunnels are different, staff can exist in different tunnels, each staff is provided with a portable intelligent terminal in practical application, and the intrinsic safety network switch for signal transfer can be arranged in the tunnels in order to ensure effective transfer of signals in practical application.
Specifically, the invention determines the spatial range, the inclination angle and the signal area coverage of an intrinsic safety type network switch of each roadway, installs the intrinsic safety type network switch at the entrance of an underground mine hole and in each roadway according to the spatial range and the inclination angle of each roadway and the signal area coverage of the intrinsic safety type network switch, sets a portable intelligent terminal to be in wireless connection with the intrinsic safety type network switch, tests the portable intelligent terminal, acquires the number of the portable intelligent terminals in each roadway, adopts different communication modes according to the number of the portable intelligent terminals in each roadway, generates alarm signals and transmits the alarm signals to the intrinsic safety type network switch of the corresponding roadway when the portable intelligent terminal reaches the signal coverage limit distance, and the intrinsic safety type network switch of the corresponding roadway broadcasts the alarm signals while expanding the coverage of the communication signals through the portable intelligent terminal on the premise of guaranteeing the underground communication quality.
Specifically, the determining the spatial range, the inclination angle and the signal area coverage range of the intrinsic safety type network switch of each roadway comprises the following steps:
detecting the height H, the length a, the width d and the vertical drop H of each roadway under the well by adopting a laser detector;
according to formula (1), calculating the space range S of each tunnel, wherein c is the speed of light in vacuum,
calculating the inclination angle theta of each roadway according to the formula (2), wherein theta is more than or equal to 0 and less than
Determining the signal area coverage area S1 of the intrinsic safety type network switch according to the maximum number n supported by the ports of the intrinsic safety type network switch and the network line length l through a formula (3), wherein pi is a circumference ratio,
according to the method, a technician detects the height, the length, the width and the vertical fall of each roadway underground by using a laser detector in advance, calculates the spatial range and the inclination angle of each roadway, and determines the coverage range of the signal area of the intrinsic safety type network switch according to the maximum number of port supports and the length of network wires of the intrinsic safety type network switch.
Specifically, the invention obtains the topographic parameters of all the tunnels under the well through the laser detector, calculates the spatial range and the inclination angle of the tunnels according to the topographic parameters, and determines the signal area coverage of the intrinsic safety type network switch according to the maximum number of port supports and the network line length of the intrinsic safety type network switch, thereby installing the intrinsic safety type network switch according to the environment of each tunnel under the well and ensuring the stability of communication.
Specifically, the installing the intrinsic safety type network switch at the entrance of the mine tunnel and in each tunnel in the pit according to the spatial range and the inclination angle of each tunnel and the coverage range of the signal area of the intrinsic safety type network switch comprises:
at least one intrinsic safety type network switch is arranged at the entrance of the mine tunnel, and the intrinsic safety type network switch at the entrance of the mine tunnel is connected with the intrinsic safety type network switch and the mine dispatching station in each tunnel in the pit;
determining the number of the intrinsic safety type network switches installed in each underground roadway according to the spatial range and the inclination angle of each underground roadway and the signal coverage range of the intrinsic safety type network switches;
and the intrinsic safety type network switches are equidistantly arranged in each underground roadway.
Specifically, at least one intrinsic safety type network switch is arranged at the entrance of an underground mine tunnel, the intrinsic safety type network switches are equidistantly arranged in each underground roadway, each intrinsic safety type is connected with each other through wires, so that the mine field has wired coverage of a foundation, the stability of communication is guaranteed by means of wired stability, and underground information can be transmitted to the underground.
Specifically, the determining the number of the intrinsic safety type network switches installed in each roadway in the well according to the spatial range and the inclination angle of each roadway and the signal coverage range of the intrinsic safety type network switches includes:
determining the number M of the intrinsic safety type network switches installed in each roadway in the well according to a formula (4) according to the coverage range of the signal area of the intrinsic safety type network switch, the spatial range of each roadway and the inclination angle of each roadway,
specifically, when the inclination angles of the roadways are different, the number of the intrinsic safety type network switches installed in each roadway in the pit is determined in different modes according to the coverage range of the signal area of the intrinsic safety type network switch and the spatial range of each roadway, so that the intrinsic safety type network switch covers most areas of the roadway, and the communication quality is ensured.
Specifically, the step of testing the portable intelligent terminals to obtain the number of the portable intelligent terminals in each roadway comprises the following steps:
the method comprises the steps that a test starting time t0 and a test ending time t1 are set, a portable intelligent terminal sends preset test information to an intrinsic safety type network switch in a roadway during test, and the number of the portable intelligent terminals in the roadway is determined according to the number of the received test information.
Specifically, the portable intelligent terminals are periodically tested, the number of the portable intelligent terminals in the roadway is determined according to the number of the received test information, so that personnel distribution of each roadway can be obtained on the well, and an unused communication mode is adopted according to the number of the portable intelligent terminals.
Specifically, according to the number of portable intelligent terminals in the roadway, different communication modes are adopted, including:
when the number of the portable intelligent terminals in the roadway is 1, a first communication mode is adopted;
when the number of the portable intelligent terminals in the roadway is more than 1 and less than 10, adopting a second communication mode;
when the number of the portable intelligent terminals in the roadway is more than or equal to 10, adopting a third communication mode;
the first communication mode is that the portable intelligent terminal in the roadway is in direct communication with the intrinsic safety type network switch in the roadway, the second communication mode is that the portable intelligent terminal in the roadway is in full communication with the intrinsic safety type network switch in the roadway, and the portable intelligent terminal in the roadway and the intrinsic safety type network switch in the roadway construct a communication network.
Specifically, the invention adopts different communication modes through the detected quantity of intelligent terminals in each roadway, so that the roadway has high-efficiency communication and the coverage area of a signal area is enlarged.
Specifically, the full communication between the portable intelligent terminal in the roadway and the intrinsic safety type network switch in the roadway comprises:
the portable intelligent terminal in the tunnel is regarded as a mobile node, and the intrinsic safety type network switch in the tunnel is regarded as a fixed node;
the fixed node establishes two-way communication with a mobile node in the coverage area of the signal area;
the mobile node establishing communication with the fixed node performs two-way communication with all mobile nodes in the coverage area of the signal area.
Specifically, when the number of the portable intelligent terminals in the roadway is more than or equal to 1 and less than 10, the portable intelligent terminals are directly communicated with the intrinsic safety type network switch, so that the stability of communication is ensured.
Referring to fig. 2, the communication network established by the portable intelligent terminal in the tunnel and the intrinsic safety type network switch in the tunnel includes:
the method comprises the steps of presetting the maximum communication number of a fixed node as k1, presetting the maximum communication number of a mobile node as 2, and setting the number of the mobile nodes in the coverage range of a signal area of the fixed node as k2, wherein k1 is more than 2;
when k2 is less than or equal to k1, the fixed node establishes two-way communication with all mobile nodes in the coverage area of the area, and the mobile node which establishes communication with the fixed node selects all mobile nodes with signal intensity in the coverage area of the signal area to establish two-way communication so as to establish a communication network;
when k2 is more than k1, the fixed node compares the received signal intensities of the mobile nodes, selects k1 mobile nodes with larger signal intensities for bidirectional communication, and establishes bidirectional communication with the mobile node with the largest signal intensity in the coverage area of the mobile node selection signal area for establishing communication with the fixed node, so as to construct a communication network.
When the number of the portable intelligent terminals in the roadway is greater than or equal to 10, the maximum communication number k1 of the intrinsic safety type network switch is set, the switch among the intrinsic safety type networks preferentially establishes communication with k1 portable intelligent terminals in the coverage range of the signal area, and establishes communication with the portable intelligent terminals which establish communication with the intrinsic safety type network switch and the portable intelligent terminals with the maximum signal intensity in the signal coverage range, so that a communication network is constructed.
Specifically, when the number of the portable intelligent terminals in the roadway is more than or equal to 10, the maximum communication number of the intrinsic safety type network switches is set, the maximum communication number of the portable intelligent terminals is set, a communication network is constructed, all the intrinsic safety type network switches and the portable intelligent terminals in the roadway are ensured to enter the communication network, repeated connection is not generated, the blocking of a communication road is avoided, the signal coverage area is enlarged, and meanwhile, the communication stability is ensured.
Specifically, when the portable intelligent terminal reaches a signal coverage limit distance, the intrinsic safety type network switch for generating an alarm signal and sending the alarm signal to a corresponding roadway comprises:
the intrinsic safety type network switch is provided with a signal coverage limit distance Lg, and the portable intelligent terminal is provided with a signal coverage limit distance Ld;
when the first communication mode or the second communication mode is adopted, generating an alarm signal when the linear distance between the portable intelligent terminal in the roadway and the intrinsic safety type network switch for establishing communication with the portable intelligent terminal exceeds Lg;
when the third communication mode is adopted, when the linear distance between the portable intelligent terminal in the roadway and the intrinsic safety type network switch for establishing communication exceeds Lg or the linear distance between the portable intelligent terminal in the roadway and the intrinsic safety type network switch for establishing communication exceeds Ld, an alarm signal is generated.
The invention sets signal coverage limit distance for the intrinsic safety type network switch and the portable intelligent terminal respectively, and generates alarm signal when the portable intelligent terminal exceeds the signal coverage limit distance with the connected portable intelligent terminal or the intrinsic safety type network switch, namely, the portable intelligent terminal is about to enter the coverage of the no-signal area.
Specifically, the invention generates an alarm signal for the portable intelligent terminal which is about to enter the coverage of the no-signal area, alerts the underground operator that the underground operator possibly breaks away from the communication range, and protects the safety of the underground operator on the premise of ensuring the communication range.
Specifically, the intrinsically safe network switch corresponding to the roadway broadcasts the alarm signal, which comprises:
the intrinsic safety type network switch of the corresponding roadway transmits an alarm signal to the intrinsic safety type network switch of the last roadway, and the intrinsic safety type network switch connected with the alarm signal transmits the alarm signal to the intrinsic safety type network switch of the last roadway until the alarm signal reaches the intrinsic safety type network switch at the entrance of the mine tunnel, and the intrinsic safety type network switch at the entrance of the mine tunnel transmits the alarm signal to a dispatching station on the mine;
and the intrinsic safety type network switch which receives the alarm signal sends the alarm signal to all portable intelligent terminals which establish communication with the intrinsic safety type network switch.
Specifically, the portable intelligent terminal generating the alarm signal is transmitted to the intrinsic safety type exchanger in the corresponding roadway, the intrinsic safety type exchanger receiving the alarm signal is transmitted to the intrinsic safety type network exchanger of the previous roadway until the alarm signal is transmitted to the entrance of the mine tunnel, and the intrinsic safety type network exchanger receiving the alarm signal is used for transmitting the alarm signal to all portable intelligent terminals establishing communication with the intrinsic safety type network exchanger, so that the alarm signal can be broadcasted in a mine field area, and the safety of underground operators is ensured.
Thus far, the technical solution of the present invention has been described in connection with the preferred embodiments shown in the drawings, but it is easily understood by those skilled in the art that the scope of protection of the present invention is not limited to these specific embodiments. Equivalent modifications and substitutions for related technical features may be made by those skilled in the art without departing from the principles of the present invention, and such modifications and substitutions will be within the scope of the present invention.
The foregoing description is only of the preferred embodiments of the invention and is not intended to limit the invention; various modifications and variations of the present invention will be apparent to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The submerged communication method based on the intrinsic safety type network switch is characterized by comprising the following steps of:
determining the space range, the inclination angle and the signal area coverage range of an intrinsic safety type network switch of each roadway in the pit;
installing an intrinsic safety type network switch at an entrance of an underground mine hole and in each underground tunnel according to the spatial range and the inclination angle of each tunnel and the coverage range of a signal area of the intrinsic safety type network switch;
setting a portable intelligent terminal to be in wireless connection with the intrinsic safety type network switch, and testing the portable intelligent terminal to obtain the number of the portable intelligent terminals in each underground roadway;
adopting different communication modes according to the number of portable intelligent terminals in each underground roadway;
when the portable intelligent terminal reaches the signal coverage limit distance, generating an alarm signal and sending the alarm signal to an intrinsic safety type network switch of a corresponding roadway;
and broadcasting the alarm signal by the intrinsic safety type network switch of the corresponding roadway.
2. The method for submerged communication based on an intrinsically safe network switch of claim 1, wherein the determining the spatial extent, the inclination angle and the signal area coverage of the intrinsically safe network switch for each roadway in the pit comprises:
detecting the height H, the length a, the width d and the vertical drop H of each roadway under the well by adopting a laser detector;
according to formula (1), calculating the space range S of each tunnel, wherein c is the speed of light in vacuum,
calculating the inclination angle theta of each roadway according to the formula (2), wherein theta is more than or equal to 0 and less than
Determining the signal area coverage area S1 of the intrinsic safety type network switch according to the maximum number n supported by the ports of the intrinsic safety type network switch and the network line length l through a formula (3), wherein pi is a circumference ratio,
3. the method for submerged communication based on an intrinsically safe network switch of claim 2, wherein installing the intrinsically safe network switch at an entrance of an uphole mine and in each underground roadway according to the spatial range and the inclination angle of each roadway and the coverage area of the signal area of the intrinsically safe network switch comprises:
at least one intrinsic safety type network switch is arranged at the entrance of the mine tunnel, and the intrinsic safety type network switch at the entrance of the mine tunnel is connected with the intrinsic safety type network switch and the mine dispatching station in each tunnel in the pit;
determining the number of the intrinsic safety type network switches installed in each underground roadway according to the spatial range and the inclination angle of each underground roadway and the signal coverage range of the intrinsic safety type network switches;
and (5) equidistant installation of the intrinsic safety type network switches in all the underground roadways.
4. The method for submerged communication based on an intrinsically safe network switch of claim 3, wherein the determining the number of installed intrinsically safe network switches in each roadway in the pit based on the spatial extent and the inclination angle of each roadway and the signal coverage of the intrinsically safe network switch comprises:
determining the number M of the intrinsic safety type network switches installed in each roadway in the well according to a formula (4) according to the coverage range of the signal area of the intrinsic safety type network switch, the spatial range of each roadway and the inclination angle of each roadway,
5. the method for submerged communication based on an intrinsic safety type network switch of claim 4, wherein the step of testing the portable intelligent terminals to obtain the number of the portable intelligent terminals in each tunnel in the pit comprises the steps of:
the method comprises the steps that a test starting time t0 and a test ending time t1 are set, a portable intelligent terminal sends preset test information to an intrinsic safety type network switch in a roadway during test, and the number of the portable intelligent terminals in the roadway is determined according to the number of the received test information.
6. The method for submerged communication based on the intrinsic safety type network switch of claim 5, wherein the adopting different communication modes according to the number of the portable intelligent terminals in the roadway comprises:
when the number of the portable intelligent terminals in the roadway is 1, a first communication mode is adopted;
when the number of the portable intelligent terminals in the roadway is more than 1 and less than 10, adopting a second communication mode;
when the number of the portable intelligent terminals in the roadway is more than or equal to 10, adopting a third communication mode;
the first communication mode is that the portable intelligent terminal in the roadway is in direct communication with the intrinsic safety type network switch in the roadway, the second communication mode is that the portable intelligent terminal in the roadway is in full communication with the intrinsic safety type network switch in the roadway, and the portable intelligent terminal in the roadway and the intrinsic safety type network switch in the roadway construct a communication network.
7. The method for submerged communication based on an intrinsically safe network switch of claim 6, wherein the full communication between the portable intelligent terminal in the roadway and the intrinsically safe network switch in the roadway comprises:
the portable intelligent terminal in the tunnel is regarded as a mobile node, and the intrinsic safety type network switch in the tunnel is regarded as a fixed node;
the fixed node establishes two-way communication with a mobile node in the coverage area of the signal area;
the mobile node establishing communication with the fixed node performs two-way communication with all mobile nodes in the coverage area of the signal area.
8. The method for submerged communication based on an intrinsically safe network switch of claim 7, wherein the establishing a communication network between the portable intelligent terminal in the tunnel and the intrinsically safe network switch in the tunnel comprises:
the method comprises the steps of presetting the maximum communication number of a fixed node as k1, presetting the maximum communication number of a mobile node as 2, and setting the number of the mobile nodes in the coverage range of a signal area of the fixed node as k2, wherein k1 is more than 2;
when k2 is less than or equal to k1, the fixed node establishes two-way communication with all mobile nodes in the coverage area of the area, and the mobile node which establishes communication with the fixed node selects all mobile nodes with signal intensity in the coverage area of the signal area to establish two-way communication so as to establish a communication network;
when k2 is more than k1, the fixed node compares the received signal intensities of the mobile nodes, selects k1 mobile nodes with larger signal intensities for bidirectional communication, and establishes bidirectional communication with the mobile node with the largest signal intensity in the coverage area of the mobile node selection signal area for establishing communication with the fixed node, so as to construct a communication network.
9. The method for submerged communication based on an intrinsically safe network switch of claim 8, wherein generating and transmitting the alarm signal to the intrinsically safe network switch of the corresponding roadway when the portable intelligent terminal reaches the signal coverage limit distance comprises:
the intrinsic safety type network switch is provided with a signal coverage limit distance Lg, and the portable intelligent terminal is provided with a signal coverage limit distance Ld;
when the first communication mode or the second communication mode is adopted, generating an alarm signal when the linear distance between the portable intelligent terminal in the roadway and the intrinsic safety type network switch for establishing communication with the portable intelligent terminal exceeds Lg;
when the third communication mode is adopted, when the linear distance between the portable intelligent terminal in the roadway and the intrinsic safety type network switch for establishing communication exceeds Lg or the linear distance between the portable intelligent terminal in the roadway and the intrinsic safety type network switch for establishing communication exceeds Ld, an alarm signal is generated.
10. The method for submerged communication based on an intrinsically safe network switch of claim 9, wherein the intrinsically safe network switch corresponding to the roadway broadcasts an alarm signal comprising:
the intrinsic safety type network switch of the corresponding roadway transmits an alarm signal to the intrinsic safety type network switch of the last roadway, and the intrinsic safety type network switch connected with the alarm signal transmits the alarm signal to the intrinsic safety type network switch of the last roadway until the alarm signal reaches the intrinsic safety type network switch at the entrance of the mine tunnel, and the intrinsic safety type network switch at the entrance of the mine tunnel transmits the alarm signal to the dispatching station on the mine;
and the intrinsic safety type network switch which receives the alarm signal sends the alarm signal to all portable intelligent terminals which establish communication with the intrinsic safety type network switch.
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| CN202475781U (en) * | 2011-12-31 | 2012-10-03 | 徐州中矿大华洋通信设备有限公司 | Mine intrinsic safe wireless switch |
| CN102802173A (en) * | 2012-08-06 | 2012-11-28 | 中国矿业大学(北京) | System for underground communication and staff monitoring based on TD-LTE technology |
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