CN114143123B - Passive wireless network for forest grassland - Google Patents
Passive wireless network for forest grassland Download PDFInfo
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- CN114143123B CN114143123B CN202111427046.8A CN202111427046A CN114143123B CN 114143123 B CN114143123 B CN 114143123B CN 202111427046 A CN202111427046 A CN 202111427046A CN 114143123 B CN114143123 B CN 114143123B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/02—Details
- H04L12/10—Current supply arrangements
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B17/00—Fire alarms; Alarms responsive to explosion
- G08B17/06—Electric actuation of the alarm, e.g. using a thermally-operated switch
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B17/00—Fire alarms; Alarms responsive to explosion
- G08B17/10—Actuation by presence of smoke or gases, e.g. automatic alarm devices for analysing flowing fluid materials by the use of optical means
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B25/00—Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems
- G08B25/01—Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems characterised by the transmission medium
- G08B25/10—Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems characterised by the transmission medium using wireless transmission systems
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/14—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from dynamo-electric generators driven at varying speed, e.g. on vehicle
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/34—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering
- H02J7/35—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering with light sensitive cells
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/18—Structural association of electric generators with mechanical driving motors, e.g. with turbines
- H02K7/1892—Generators with parts oscillating or vibrating about an axis
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
- H04L69/22—Parsing or analysis of headers
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/30—Services specially adapted for particular environments, situations or purposes
- H04W4/38—Services specially adapted for particular environments, situations or purposes for collecting sensor information
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W84/00—Network topologies
- H04W84/18—Self-organising networks, e.g. ad-hoc networks or sensor networks
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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
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/30—Systems integrating technologies related to power network operation and communication or information technologies for improving the carbon footprint of the management of residential or tertiary loads, i.e. smart grids as climate change mitigation technology in the buildings sector, including also the last stages of power distribution and the control, monitoring or operating management systems at local level
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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
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
- Y04S20/20—End-user application control systems
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Power Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Computer Security & Cryptography (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention provides a passive wireless network for a forest grassland, and belongs to the technical field of wireless communication. The wireless network node comprises a plurality of wireless network nodes, each wireless network node can be used as a relay node, receives information sent by one adjacent wireless network node and forwards the information to another adjacent wireless network node; each wireless network node comprises: the system comprises a processor, a transceiver, an antenna and a power supply module for supplying power, wherein the processor, the transceiver and the antenna are sequentially connected; the power supply module comprises an energy storage unit, a solar power generation unit, a swing power generation unit, a detection unit, a power supply switching circuit and a power supply management unit; the detection unit is used for respectively detecting the electrical parameters of the output ends of the solar power generation unit, the swing power generation unit and the energy storage unit; the power supply management unit is used for controlling the power supply switching circuit to switch the power supply mode or maintain the current power supply mode according to the electric parameters detected by the detection unit. The invention can ensure reliable energy supply of the wireless network in the scenes that power supply cannot be carried out by using a power grid, such as forest and grassland.
Description
Technical Field
The invention relates to the technical field of wireless communication, in particular to a passive wireless network for a forest grassland.
Background
The forest and grassland fire not only seriously destroys forest and grassland resources and ecological environment, but also can cause great harm to the lives and properties of people and public safety, and poses great threat to national economic sustainable development and ecological safety. The specific hazards are shown in the following aspects: the method has the advantages of burning forest and grassland vegetation resources, damaging wild animals, causing water and soil loss, reducing the water quality of downstream rivers, causing air pollution and threatening the safety of lives and properties of people.
Therefore, in order to avoid or minimize damage caused by forest grassland fires, in the related art, fire prevention and detection is achieved by arranging a detector (which may include, for example, a smoke sensor, a temperature sensor, a carbon dioxide sensor, a carbon monoxide sensor, etc.) including one or more sensors in the forest grassland. Aiming at the characteristics that forest and grassland areas are large and people are rare and people are not living basically, the detectors are basically required to be communicated with related platforms or servers through wireless networks so as to send detected information or send fire alarm. The wireless network laid out in a forest or a grassland can not rely on power supply of a power grid as the current base station, and basically can only rely on an energy storage battery and/or a self-carried power generation module (such as a solar power generation module and a wind power generation module). Although the capacity of the battery is larger at present, the power supply time is limited, and the cost is higher when the capacity of the battery is larger. If the solar power generation or the wind power generation is mainly relied on, the reliability of power supply is low due to the limitation of weather and wind power.
Disclosure of Invention
Therefore, the technical problem to be solved by the embodiment of the invention is to overcome the defect that the passive wireless network in the prior art is low in power supply reliability when power supply cannot be carried out by using a power grid, so that the passive wireless network for the forest grassland is provided.
To this end, the invention provides a passive wireless network for forest grassland, comprising: each wireless network node can be used as a relay node, receives information sent by one adjacent wireless network node and forwards the information to another adjacent wireless network node; each of the radio network nodes comprises: the system comprises a processor, a transceiver, an antenna and a power supply module for supplying power, wherein the processor, the transceiver and the antenna are connected in sequence;
the power supply module comprises an energy storage unit, a solar power generation unit, a swing power generation unit, a detection unit, a power supply switching circuit and a power supply management unit;
the detection unit is used for respectively detecting the electrical parameters of the output ends of the solar power generation unit, the swing power generation unit and the energy storage unit;
the power supply management unit is used for controlling the power supply switching circuit to switch a power supply mode or maintain a current power supply mode according to the electric parameters detected by the detection unit, wherein the power supply mode comprises three modes, namely power supply of the solar power generation unit, power supply of the swing power generation unit and power supply of the energy storage unit.
Optionally, the wireless network node further includes a first parabolic focusing plate, an electromagnetic wave filter, and a second parabolic focusing plate;
the first parabolic focusing plate is used for focusing wireless communication signals transmitted by one adjacent wireless network node to the electromagnetic wave filter, the electromagnetic wave filter is used for filtering interference electromagnetic waves except the wireless communication signals in the signals focused by the first parabolic focusing plate, and the second parabolic focusing plate is used for reflecting the wireless communication signals penetrating through the electromagnetic wave filter to another adjacent wireless network node.
Optionally, the wireless network node further comprises a driving mechanism for driving the first parabolic focusing plate and/or the second parabolic focusing plate to rotate;
when a first indication signal which is sent by the antenna and the transceiver and indicates that the test signal is not successfully received by the adjacent wireless network node is received by the antenna and the transceiver, the processor controls the driving mechanism to drive the first parabolic focusing plate and/or the second parabolic focusing plate to rotate until a second indication signal which is sent by the adjacent wireless network node and indicates that the test signal is successfully received is received;
wherein the test signal is forwarded between the adjacent wireless network nodes through the first parabolic focusing plate, the electromagnetic wave filter and the second parabolic focusing plate.
Optionally, the antenna and the transceiver are used for receiving wireless communication signals sent by the adjacent wireless network nodes through the antenna and the transceiver or through the first parabolic focusing plate, the electromagnetic wave filter and the second parabolic focusing plate;
the processor is configured to parse a packet header of a data packet carried by the wireless communication signal, and if the packet header indicates that forwarding needs to be performed through the antenna and the transceiver, control the antenna and the transceiver to forward the received data packet carried by the wireless communication signal; and if the sending target of the data packet carried by the wireless communication signal in the packet header indicates that the wireless network node where the processor is located is the sending target, analyzing a message body in the data packet.
Optionally, the wireless network node includes two sets of the first parabolic focusing plates, the electromagnetic wave filter, and the second parabolic focusing plates.
Optionally, the antenna includes two antenna arrays respectively facing two adjacent wireless network nodes, and an adjustable capacitor assembly respectively connected to the two antenna arrays; the processor adjusts the operating frequency of the antenna array by adjusting the capacitance value of the adjustable capacitance component.
Optionally, the wireless network node includes one or more sensors, the sensor is used for detecting information required for forest and grassland fire prevention and control, and the sensor includes one or more of a smoke sensor, a carbon dioxide concentration sensor, a carbon monoxide concentration sensor, a temperature sensor, a humidity sensor, an illumination sensor and an image sensor.
Optionally, the wireless network node further includes a data storage module, configured to store data to be sent;
the processor is also used for controlling the data storage module to delete corresponding data when receiving feedback information which is sent by a data sending target and used for indicating that the data has confirmed to be received; and if the feedback information is not received, sending corresponding data again after a preset time interval until the feedback information is received.
Optionally, the swing power generation unit includes a base, a swing rod, a power generation assembly disposed on the base, and an energy conversion assembly disposed on the swing rod and the base, and the base is connected to the swing rod through a movable assembly;
the energy conversion assembly comprises a fork part and a wheel part, the fork part is arranged on the oscillating rod, the wheel part is arranged on the base through a supporting assembly, the fork part comprises a slide way, a first slide block, an oscillating block and an escapement fork, the slide way is arranged on the circumferential outer wall of the oscillating rod, the first slide block is arranged in the slide way in a sliding mode, the first slide block is connected with the oscillating block through an electric telescopic rod, and the oscillating block is matched with the escapement fork;
the wheel part comprises an escape wheel, an escape tooth and a transmission tooth, the escape wheel is of an annular structure, the escape wheel is arranged on the base through the support assembly, the escape wheel is located around the escape fork, the escape teeth are multiple and arranged on the inner wall of the escape wheel, and the transmission tooth is multiple and arranged on the outer wall of the escape wheel; the escape fork drives the escape wheel to rotate; the escape wheel is movably connected with the support component;
the movable assembly comprises a central part and a peripheral side part, the central part comprises a connecting ball and a spherical groove connected with the connecting ball, the connecting ball is connected with the swinging rod, and the spherical groove is arranged at the central position of the base;
week side portion includes connecting portion, lower connecting portion, elastomeric element and magnet, go up connecting portion be a plurality of and locate on the swinging arms, it is a plurality of go up connecting portion and be circumference array equidistance and arrange, it is corresponding, lower connecting portion be a plurality of and locate on the base upper surface with go up the position that connecting portion correspond, elastomeric element also is a plurality of and locate the position respectively and correspond go up connecting portion with between the lower connecting portion, every go up connecting portion below and every the lower connecting portion top all is equipped with one magnet, at least one polarity in two mutual magnets that correspond is variable.
Optionally, the electricity generation subassembly includes generator and driven gear, driven gear with driving gear intermeshing, driving gear drive driven gear and rotate, the generator center is equipped with the permanent magnet, is equipped with the coil on every side, and driven gear drives the permanent magnet and rotates, and the coil is the action of cutting magnetic induction line.
Optionally, a guide rail is arranged on the base, a second sliding block is movably arranged in the guide rail, a fixing column is arranged between the second sliding block and the escape fork, and a power assembly is arranged in the base.
Optionally, a controller is arranged on the base, the controller is electrically connected with the power assembly and the electric telescopic rod, and a proximity sensor is arranged on the first sliding block and electrically connected with the controller.
The technical scheme of the embodiment of the invention has the following advantages:
according to the passive wireless network for the forest and grassland provided by the embodiment of the invention, the energy storage unit, the solar power generation unit and the swing power generation unit are arranged in each wireless network node to realize reliable power supply of the wireless network, wherein the swing power generation unit can generate power only by small wind power, so that the energy supply can be ensured even in long-term rainy weather.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a schematic block diagram of a specific example of a passive wireless network for a forest grassland in an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a specific example of a wireless communication signal forwarding component in an embodiment of the present invention;
FIG. 3 is a schematic longitudinal center sectional view of a specific example of a swing power generation unit according to an embodiment of the present invention;
fig. 4 is a partially enlarged view of the point F shown in fig. 3.
Reference numerals are as follows:
1-a wireless network node; 11-a processor; 12-a transceiver; 13-an antenna; 14-a power supply module; 141-an energy storage unit; 142-a solar power generation unit; 143-a swing generating unit; 144-a detection unit; 145-power switching circuit; 146-a power management unit; 340-upper connection; 350-lower connection; 360-an elastic member; 370-a magnet.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it is to be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.
In describing the present invention, it is to be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. The terms "comprises" and/or "comprising," when used in this specification, are intended to specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. The term "and/or" includes any and all combinations of one or more of the associated listed items. The terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," "outer," and the like are used in the orientation or positional relationship indicated in the drawings for convenience in describing the invention and for simplicity in description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be construed as limiting the invention. The terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. The terms "mounted," "connected," and "coupled" are to be construed broadly and may include, for example, fixed connections, removable connections, or integral connections; can be mechanically or electrically connected; the two elements can be directly connected, indirectly connected through an intermediate medium, or communicated with each other inside; either a wireless or a wired connection. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Furthermore, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
The present embodiment provides a passive wireless network for forest grassland, as shown in fig. 1, including:
each wireless network node 1 can be used as a relay node, receives information sent by one adjacent wireless network node 1 and forwards the information to another adjacent wireless network node 1; each of the radio network nodes 1 comprises: a processor 11, a transceiver 12 and an antenna 13, which are connected in sequence, and a power supply module 14 for supplying power;
the power module 14 comprises an energy storage unit 141, a solar power generation unit 142, a swing power generation unit 143, a detection unit 144, a power switching circuit 145 and a power management unit 146;
the detection unit 144 is configured to detect electrical parameters at output ends of the solar power generation unit 142, the swing power generation unit 143, and the energy storage unit 141 respectively; the electrical parameters may specifically include voltage, etc.;
the power management unit 146 is configured to control the power switching circuit 145 to switch a power supply mode or maintain a current power supply mode according to the electrical parameter detected by the detection unit 144, where the power supply mode includes three power supply modes, i.e., power supply from the solar power generation unit, power supply from the swing power generation unit, and power supply from the energy storage unit.
In the embodiment of the invention, the energy storage unit 141, the solar power generation unit 142 and the swing power generation unit 143 are arranged in each wireless network node of the passive wireless network for the forest and grassland to realize reliable power supply of the wireless network, wherein the swing power generation unit 143 can generate power only by small wind power, so that the energy supply can be ensured even in long-term rainy weather.
Each wireless network node may further include one or more sensors, where the sensors are configured to detect information required for forest and grassland fire prevention and control, and specifically, the sensors may include one or more of a smoke sensor, a carbon dioxide concentration sensor, a carbon monoxide concentration sensor, a temperature sensor, a humidity sensor, an illumination sensor, and an image sensor.
In the case where the electric energy generated by the solar power generation unit 142 or the swing power generation unit 143 can satisfy the requirement, the solar power generation unit power supply method or the swing power generation unit power supply method is preferentially used, and the energy storage unit 141 can be charged with the surplus electric energy generated during the power supply of the solar power generation unit 142 or the swing power generation unit 143. In the case that the power generated by the solar power generation unit 142 and the swing power generation unit 143 cannot satisfy the power supply requirement, the energy storage unit 141 is used to supply power. Therefore, the maximum utilization of the electric energy is ensured, and the situations that the electric energy generated by the solar power generation unit 142 and the swing power generation unit 143 cannot meet the power supply requirement and the electric power storage of the energy storage unit 141 is insufficient can be avoided.
Optionally, as shown in fig. 2, the wireless network node 1 further includes a first parabolic focusing plate 15, an electromagnetic wave filter 16, and a second parabolic focusing plate 17;
the first parabolic focusing plate 15 is configured to focus a wireless communication signal transmitted by one adjacent wireless network node 1 to the electromagnetic wave filter 16, the electromagnetic wave filter 16 is configured to filter interfering electromagnetic waves except the wireless communication signal from the signal focused by the first parabolic focusing plate 15, and the second parabolic focusing plate 17 is configured to reflect the wireless communication signal transmitted through the electromagnetic wave filter 16 to another adjacent wireless network node 1.
In the embodiment of the present invention, when the wireless network node 1 is used as a relay node to forward wireless communication signals of other wireless network nodes 1, the wireless network node directly forwards the wireless communication signals in the form of focusing and reflecting electromagnetic waves without passing through the transceiver 12, so that passive signal forwarding can be implemented, and in addition, time delay caused by signal processing when the transceiver 12 forwards the signals can be reduced.
In this embodiment, the wireless communication signal for transmitting information may use an electromagnetic wave with a longer wavelength, such as a millimeter wave, as a carrier wave.
Optionally, the wireless network node 1 further comprises a driving mechanism (not shown in the figure) for driving the first parabolic focusing plate 15 and/or the second parabolic focusing plate 17 to rotate;
when a first indication signal which is sent by the antenna 13 and the transceiver 12 and indicates that the test signal is not successfully received by the adjacent wireless network node 1, and is received by the antenna 13 and the transceiver 12, the processor 11 controls the driving mechanism to drive the first parabolic focusing plate 15 and/or the second parabolic focusing plate 17 to rotate until a second indication signal which is sent by the adjacent wireless network node 1 and indicates that the test signal is successfully received is received;
wherein the test signal is forwarded between the adjacent wireless network nodes 1 through the first parabolic focusing plate 15, the electromagnetic wave filter 16 and the second parabolic focusing plate 17.
In this embodiment, the test signal is used to test whether the signal forwarding between the adjacent wireless network nodes 1 is normally performed through the first parabolic focusing plate 15, the electromagnetic wave filter 16 and the second parabolic focusing plate 17, which may be performed at regular time, and the test period may be longer.
Specifically, the adjacent wireless network node 1 may receive, through the antenna 13 and the transceiver 12, a test signal forwarded by the adjacent previous wireless network node 1 through the first parabolic focusing plate 15, the electromagnetic wave filter 16 and the second parabolic focusing plate 17, and transmit the test signal to the processor 11 for analysis to determine whether the test signal is successfully received, if the test signal is successfully received, the processor 11 controls the antenna 13 and the transceiver 12 to send a second indication signal to the adjacent previous wireless network node 1, otherwise, the first indication signal is sent.
Optionally, the antenna 13 and the transceiver 12 are used for receiving wireless communication signals sent by the adjacent wireless network node 1 through the antenna 13 and the transceiver 12, or through the first parabolic focusing plate 15, the electromagnetic wave filter 16 and the second parabolic focusing plate 17;
the processor 11 is configured to parse a packet header of a data packet carried by the wireless communication signal, and if the packet header indicates that forwarding needs to be performed through the antenna 13 and the transceiver 12, control the antenna 13 and the transceiver 12 to forward the received data packet carried by the wireless communication signal; and if the packet header indicates that the sending destination of the data packet carried by the wireless communication signal is the wireless network node 1 where the processor 11 is located, analyzing a message body in the data packet.
In the embodiment of the present invention, the transmission through the first parabolic focusing plate 15, the electromagnetic wave filter 16 and the second parabolic focusing plate 17 is not affected when the transmission is performed through the antenna 13 and the transceiver 12. For example, in the case of a fire alarm signal, this may indicate a need for retransmission via the antenna 13 and the transceiver 12. If not a fire alarm signal but detected data, no indication is required for forwarding through the antenna 13 and the transceiver 12.
In this embodiment, although the receiver in the transceiver 12 needs to operate in real time, power consumption can be reduced because the transmitter does not need to operate in real time.
Optionally, the wireless network node 1 includes two sets of first parabolic focusing plates 15, electromagnetic wave filters 16, and second parabolic focusing plates 17, and is configured to forward signals to different directions respectively. Signals in different directions can adopt different frequencies, so that interference is avoided.
Further optionally, the antenna includes two antenna arrays respectively facing two adjacent wireless network nodes 1, and adjustable capacitor assemblies respectively connected to the two antenna arrays; the processor 11 adjusts the operating frequency of the antenna array by adjusting the capacitance value of the adjustable capacitance component.
The wireless network node 1 may further include a data storage module, configured to store data to be sent; the processor 11 is further configured to control the data storage module to delete corresponding data when receiving feedback information sent by a data sending target and used for indicating that the data has been acknowledged; and if the feedback information is not received, sending corresponding data again after a preset time interval until the feedback information is received.
Specifically, if feedback information confirming the receipt of data transmitted from a transmission target (for example, a forest and grassland fire prevention and control related platform or a server) is received (which may be transmitted through another set of the first parabolic focusing plate 15, the electromagnetic wave filter 16, and the second parabolic focusing plate 17 different from the data upload), the data that has been successfully transmitted may be deleted from the data storage module, and otherwise, the data may be transmitted again after a preset time interval.
Optionally, the swing power generation unit includes a base, a swing rod, a power generation assembly arranged on the base, and an energy conversion assembly arranged on the swing rod and the base, and the base is connected to the swing rod through a movable assembly;
the energy conversion assembly comprises a fork part and a wheel part, the wheel part is arranged on the base through a supporting assembly, the fork part comprises a slide way, a first slide block, a swinging block and a pallet, the slide way is arranged on the circumferential outer wall of the swinging rod, the first slide block is arranged in the slide way in a sliding mode, the first slide block is connected with the swinging block through an electric telescopic rod, and the swinging block is matched with the pallet;
when the swinging rod swings, the swinging block is driven to swing, and when the swinging direction of the swinging rod is different, the first sliding block slides to a position vertical to the swinging direction of the swinging rod in the slideway, swings along with the swinging of the swinging rod, and drives the escapement fork to swing through the swinging block;
the wheel part comprises an escape wheel, a plurality of escapement teeth and transmission teeth, the escape wheel is of an annular structure, the escape wheel is arranged on the base through the support assembly, the plurality of escapement teeth are arranged on the inner wall of the escape wheel, and the plurality of transmission teeth are arranged on the outer wall of the escape wheel; the escapement fork is positioned in the escapement wheel ring and drives the escapement wheel to rotate; the escape wheel is movably connected with the support component;
as shown in fig. 3, the movable assembly includes a central portion and a peripheral side portion, the central portion includes a connecting ball and a spherical groove that is engaged with the connecting ball, the connecting ball is connected with the swing lever, and the spherical groove is provided at a central position of the base; wherein, the connecting ball can move in the spherical groove in a larger range;
as shown in fig. 3 and 4, the peripheral side portion includes an upper connecting portion 340, a lower connecting portion 350, an elastic member 360 and magnets 370, the upper connecting portion 340 is plural and is disposed on the oscillating rod, the plural upper connecting portions 340 are arranged in a circumferential array at equal intervals, correspondingly, the plural lower connecting portions 350 are plural and are disposed on the upper surface of the base corresponding to the upper connecting portion 340, the plural elastic members 360 are also plural and are respectively disposed between the upper connecting portion 340 and the lower connecting portion 350 corresponding to the positions, one magnet 370 is disposed below each upper connecting portion 340 and above each lower connecting portion 350 (the magnet 370 below the upper connecting portion 340 is not shown in the figure), and at least one of the two magnets 370 corresponding to each other has a variable polarity. The elastic member 360 connects the upper connection part 340 and the lower connection part 350, so that a certain range of motion is provided between the swing lever and the base, when the swing lever swings, if the distance between the two magnets 370 is smaller than the distance when the swing lever does not swing, the polarities of the two magnets 370 are adjusted to be the same, the like poles repel each other, and if the distance between the two magnets 370 is larger than the distance when the swing lever does not swing, the polarities of the two magnets 370 are adjusted to be different, the opposite poles attract each other, thereby providing a restoring force to pull back the swing lever. Specifically, the number of the upper connecting portions 340 may be four or more, for example, six. The number of the lower connection parts 350 is the same as that of the upper connection parts 340.
Specifically, a distance sensor may be installed above the lower connection portion 350, and configured to measure a distance between the upper connection portion 340 and the lower connection portion 350, and when the distance is greater than a first preset threshold, the magnet 370 above the lower connection portion 350 is controlled to change polarity, so that the magnet 370 below the upper connection portion 340 and the magnet 370 above the lower connection portion 350 have different polarities; when the distance is smaller than a second predetermined threshold (the first predetermined threshold is greater than or equal to the second predetermined threshold), the magnet 370 above the lower connecting portion 350 is controlled to switch back to the original polarity, so that the magnet 370 below the upper connecting portion 340 has the same polarity as the magnet 370 above the lower connecting portion 350.
The swing power generation unit provided in the present embodiment can generate power even when wind power is small, swings the swing lever by using wind power, converts swing kinetic energy into swing mechanical energy by using a mechanical structure, converts swing mechanical energy into rotational mechanical energy, and then cuts magnetic lines of force by rotating the permanent magnet so that electromotive force is generated according to faraday's law of electromagnetic induction to generate power.
Optionally, the swinging rod is made of a flexible material.
Optionally, the electricity generation subassembly includes generator and driven gear, driven gear with driving gear intermeshing, driving gear drive driven gear and rotate, the generator center is equipped with the permanent magnet, is equipped with the coil on every side, and driven gear drives the permanent magnet and rotates, and the action of cutting magnetic induction line is done to the coil, and according to Faraday's electromagnetic induction law, the coil produces induced-current, generates electricity.
Optionally, a guide rail is arranged on the base, a second sliding block is movably arranged in the guide rail, a fixing column is arranged between the second sliding block and the escape fork, and a power assembly is arranged in the base.
In this embodiment, the power assembly provides power to drive the second slide to slide in the guide rail to indirectly move the pallet.
Optionally, a controller is arranged on the base, the controller is electrically connected with the power assembly and the electric telescopic rod, and a proximity sensor is arranged on the first sliding block and electrically connected with the controller.
In this embodiment, the controller controls the switch of the power assembly and the extension and retraction of the electric telescopic rod, and the escapement fork can be rotated to the position close to the sensor through the power assembly. The swinging block is inserted into the horn head of the pallet fork in cooperation with the expansion and contraction of the electric telescopic rod.
Specifically, when the distance between the pallet (specifically, the horn on the pallet) and the proximity sensor is greater than a preset distance, the controller controls the power assembly to start to drive the second sliding block to slide, so that the pallet is indirectly moved. And when the distance between the pallet fork and the proximity sensor is smaller than or equal to a preset distance, the controller controls the power assembly to be turned off.
The working principle of the swing power generation device is as follows:
the base is installed in external open area, when the external world appears breeze, the swinging arms is along with the wind direction swing, make the swinging block of installing on the swinging arms also along the wind direction swing, the swinging block drives the escapement tooth rotation, the escapement tooth is on the inner wall of escape wheel, it is rotatory to drive the escape wheel, the rotatory driving gear that makes the outer lane of escape wheel is rotatory, driving gear and driven gear meshing, it is rotatory to make driven gear, the permanent magnet rotation among the driven gear drive generator makes the coil cutting magnetic induction line around the permanent magnet, generate electricity.
Because the wind direction changes, the wind direction can also change for a plurality of times in one day, so the angle and the direction of each swing are different, the prior art can only convert the kinetic energy in one swing direction into electric energy, and the wind energy utilization rate is lower. In the embodiment of the invention, the oscillating rod is provided with the annular slide way, the slide way is provided with the first sliding block capable of sliding, the first sliding block is connected with the oscillating block through the electric telescopic rod, and the oscillating block can drive the escapement fork to oscillate; set up annular escape wheel around the swinging arms, set up the escapement tooth of cooperation pallet on the annular inner wall, set up the driving gear on the outer wall, regardless of the direction of sway like this, the pallet is in where, all has the escapement tooth of complex with it on every side, becomes rotary motion with its swing, generates electricity, has increased driven flexibility, has improved the utilization efficiency of wind energy.
In addition, the following problems are addressed: in the swinging process, under the condition of low wind power, the swinging frequency is low, the returning return speed of the swinging rod is low when the swinging rod swings towards one direction, so that the swinging rod rotates slowly and the power generation efficiency is low when power is generated.
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are within the scope of the invention.
Claims (7)
1. A passive wireless network for a forest grassland, comprising: a plurality of wireless network nodes (1), wherein each wireless network node (1) can be used as a relay node, receives information sent by one adjacent wireless network node (1) and forwards the information to another adjacent wireless network node (1); each of the radio network nodes (1) comprises: the system comprises a processor (11), a transceiver (12) and an antenna (13) which are connected in sequence, and a power supply module (14) for supplying power;
the power supply module (14) comprises an energy storage unit (141), a solar power generation unit (142), a swing power generation unit (143), a detection unit (144), a power supply switching circuit (145) and a power supply management unit (146);
the detection unit (144) is used for respectively detecting the electrical parameters of the output ends of the solar power generation unit (142), the swing power generation unit (143) and the energy storage unit (141);
the power supply management unit (146) is used for controlling the power supply switching circuit (145) to switch a power supply mode or maintain a current power supply mode according to the electrical parameters detected by the detection unit (144), wherein the power supply mode comprises three power supply modes, namely power supply of the solar power generation unit, power supply of the swing power generation unit and power supply of the energy storage unit; the wireless network node (1) further comprises a first parabolic focusing plate (15), an electromagnetic wave filter (16) and a second parabolic focusing plate (17);
the first parabolic focusing plate (15) is used for focusing wireless communication signals transmitted by one adjacent wireless network node (1) to the electromagnetic wave filter (16), the electromagnetic wave filter (16) is used for filtering interference electromagnetic waves except the wireless communication signals in the signals focused by the first parabolic focusing plate (15), and the second parabolic focusing plate (17) is used for reflecting the wireless communication signals transmitted through the electromagnetic wave filter (16) to another adjacent wireless network node (1).
2. A passive wireless network for forest grasslands according to claim 1, characterized in that: the wireless network node (1) further comprises a driving mechanism for driving the first parabolic focusing plate (15) and/or the second parabolic focusing plate (17) to rotate;
the processor (11) controls the driving mechanism to drive the first parabolic focusing plate (15) and/or the second parabolic focusing plate (17) to rotate when a first indication signal which is sent by the antenna (13) and the transceiver (12) and indicates that a test signal is not successfully received is received by the adjacent wireless network node (1) which is received by the antenna (13) and the transceiver (12), until a second indication signal which is sent by the adjacent wireless network node (1) and indicates that the test signal is successfully received is received;
wherein the test signal is forwarded between the adjacent wireless network nodes (1) through the first parabolic focusing plate (15), the electromagnetic wave filter (16) and the second parabolic focusing plate (17).
3. A passive wireless network for forest grasses as claimed in claim 1, wherein:
the antenna (13) and the transceiver (12) are used for receiving wireless communication signals transmitted by the adjacent wireless network node (1) through the antenna (13) and the transceiver (12) or through the first parabolic focusing plate (15), the electromagnetic wave filtering sheet (16) and the second parabolic focusing plate (17);
the processor (11) is configured to parse a packet header of a data packet carried by the wireless communication signal, and if the packet header indicates that forwarding needs to be performed through the antenna (13) and the transceiver (12), control the antenna (13) and the transceiver (12) to forward the received data packet carried by the wireless communication signal; and if the sending target of the data packet carried by the wireless communication signal in the packet header indicates that the wireless network node (1) where the processor (11) is located, analyzing a message body in the data packet.
4. A passive wireless network for forest grasslands according to claim 1, characterized in that: the wireless network node (1) comprises two groups of the first parabolic focusing plates (15), the electromagnetic wave filter plates (16) and the second parabolic focusing plates (17).
5. A passive wireless network for forest grasslands according to claim 4, characterized in that: the antenna comprises two groups of antenna arrays which respectively face two adjacent wireless network nodes (1) and adjustable capacitor assemblies which are respectively connected with the two groups of antenna arrays; the processor (11) adjusts the operating frequency of the antenna array by adjusting the capacitance value of the adjustable capacitance component.
6. A passive wireless network for forest grasses as claimed in claim 1, wherein: the wireless network node (1) comprises one or more sensors, the sensors are used for detecting information needed by forest and grassland fire prevention and control, and the sensors comprise one or more of a smoke sensor, a carbon dioxide concentration sensor, a carbon monoxide concentration sensor, a temperature sensor, a humidity sensor, an illumination sensor and an image sensor.
7. A passive wireless network for forest grasses as claimed in claim 1, wherein: the wireless network node (1) also comprises a data storage module used for storing data to be sent;
the processor (11) is further configured to control the data storage module to delete corresponding data when receiving feedback information sent by a data sending target and used for indicating that the data has been acknowledged; and if the feedback information is not received, sending corresponding data again after a preset time interval until the feedback information is received.
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