CN111817450B - Underwater communication power supply system based on magnetic communication - Google Patents
Underwater communication power supply system based on magnetic communication Download PDFInfo
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- CN111817450B CN111817450B CN202010874822.8A CN202010874822A CN111817450B CN 111817450 B CN111817450 B CN 111817450B CN 202010874822 A CN202010874822 A CN 202010874822A CN 111817450 B CN111817450 B CN 111817450B
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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
- H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
- H02J50/10—Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling
- H02J50/12—Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling of the resonant type
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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
- H02J7/02—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from ac mains by converters
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Abstract
The invention discloses an underwater communication power supply system based on magnetic communication, which comprises a seabed monitoring device and a power supply communication device carried on an underwater robot, wherein the power supply communication device and the seabed monitoring device both comprise a resonance body, when the underwater robot moves to a preset range of the position of the seabed monitoring device, the resonance body of the power supply communication device and the resonance body of the seabed monitoring device resonate in a first frequency band or a second frequency band, the power supply communication device and the seabed monitoring device realize communication between the power supply communication device and the seabed monitoring device through the first frequency band, and the power supply communication device passes through the first frequency band which is different from the second frequency band. Compared with the prior art, the invention not only reduces the use of watertight joints and cables, realizes stable communication and stable charging at medium and short distances, but also realizes communication and wireless charging by using the same resonator in different devices, thereby greatly saving the cost.
Description
Technical Field
The invention relates to the technical field of ocean monitoring, in particular to an underwater communication power supply system based on magnetic communication.
Background
In the prior art, the submarine monitoring equipment is used as an underwater monitoring node and is basically connected with the underwater monitoring node through a cable and a watertight interface, when a large number of underwater monitoring nodes need to be arranged, a large number of cables and watertight sockets are needed, especially dozens or even hundreds of underwater monitoring nodes need to be arranged in a large submarine observation network, and the deployment difficulty and cost are greatly increased due to the use of the large number of cables and watertight interfaces. Currently, there are three common underwater communication modes, namely underwater acoustic communication, optical communication and wireless radio frequency communication. In underwater environment communication, the sound wave energy is transmitted for a long distance but the data transmission rate is low, so that the method is not suitable for high-frequency communication when the submarine observation network collects underwater monitoring node data; the underwater optical communication can realize stable communication only by ensuring the accurate aiming of the receiving and transmitting equipment, and has higher requirement on accurate aiming in an underwater complex environment; the underwater wireless radio frequency communication has the defects that the underwater wireless radio frequency communication is obviously attenuated underwater, is only suitable for ultra-short distance underwater communication, and has not ideal effects on acquiring underwater monitoring node data or controlling the underwater monitoring node over a short distance. Therefore, how to realize short-medium distance stable communication and reduce the use of cables and watertight sockets is a problem to be solved urgently in the technical field of ocean development.
Disclosure of Invention
The invention mainly aims to provide an underwater communication power supply system based on magnetic communication, and aims to solve the problems that short-medium distance stable communication cannot be realized in the prior art, and a large amount of cables and watertight sockets are used, so that the deployment difficulty of a submarine observation network is high, and the cost is high.
In order to achieve the above purpose, the underwater communication power supply system based on magnetic communication provided by the invention comprises a submarine monitoring device and a power supply communication device mounted on an underwater robot, wherein the power supply communication device and the submarine monitoring device both comprise a resonance body, when the underwater robot moves to a predetermined range of the position of the submarine monitoring device, the resonance body of the power supply communication device and the resonance body of the submarine monitoring device resonate in a first frequency band or a second frequency band, the power supply communication device and the submarine monitoring device realize communication therebetween through the first frequency band, and the power supply communication device passes through the first frequency band which is different from the second frequency band.
Further, the first frequency band is larger than the second frequency band.
Furthermore, the resonator comprises three annular coils which are connected in series, the diameters and the turns of the three annular coils are the same and have a common circle center, and the planes of the three annular coils are perpendicular to each other.
Further, the power supply communication device and the seafloor monitoring device each further comprise: a microcontroller; a digital potentiometer connected to the microcontroller and in parallel with the resonator body; a resonant capacitor connected in series with the resonator body; the microcontroller adjusts the self-inductance coefficient of the resonance body by adjusting the resistance value of the digital potentiometer, so that the resonance body is adjusted to be in a first frequency band or a second frequency band.
Further, the power supply communication device and the seafloor monitoring device each further comprise: the numerical control analog switch is electrically connected between the microcontroller and the resonant capacitor; the microcontroller is electrically connected with the numerical control analog switch through the modulation module and the transmitting amplification circuit in sequence; the digital control analog switch is electrically connected with the microcontroller through the receiving amplifying circuit and the demodulating module in sequence; the microcontroller controls the input and output states of the numerical control analog switch so as to switch the resonator between a signal receiving state, a signal transmitting state and a charging state.
Further, the power supply communication apparatus further includes: a watertight interface electrically connected with the microcontroller and further for electrically connecting with the underwater robot; an inverter electrically connected to the watertight interface; and the power device is electrically connected with the microcontroller, the inverter and the numerical control analog switch.
Further, the power supply communication apparatus further includes: the resonance body and the watertight interface are arranged on the outer surface of the first shell, and the microcontroller, the digital potentiometer, the resonance capacitor, the modulation module, the transmitting amplification circuit, the numerical control analog switch, the demodulation module, the receiving amplification circuit, the inverter and the power device are arranged in the first shell.
Further, the subsea monitoring device further comprises: the high-frequency rectifying and filtering circuit is electrically connected with the numerical control analog switch; and the energy storage battery is electrically connected with the high-frequency rectifying and filtering circuit and the microcontroller.
Further, the subsea monitoring device further comprises: at least one detection sensor electrically connected to the microcontroller.
Further, the subsea monitoring device further comprises: the resonance body is arranged on the outer surface of the second shell, and the microcontroller, the digital potentiometer, the resonance capacitor, the modulation module, the transmitting amplification circuit, the numerical control analog switch, the demodulation module, the receiving amplification circuit and the sensor are all arranged in the second shell.
In the technical scheme of the invention, the power supply communication equipment and the seabed monitoring equipment both comprise a resonance body, when the underwater robot moves to a preset range of the position of the seabed monitoring equipment, such as within 0.5 meter, the resonance body of the power supply communication equipment and the resonance body of the seabed monitoring equipment resonate in a first frequency band or a second frequency band, and when the two resonance bodies resonate in the first frequency band, the power supply communication equipment and the seabed monitoring equipment realize mutual communication through the first frequency band so as to realize mutual data transmission, in particular to realize that the seabed monitoring equipment uploads monitoring data to the power supply communication equipment; when the two resonators resonate in the second frequency band, the power supply communication device supplies power to the subsea monitoring device through the second frequency band, where the first frequency band is different from the second frequency band, that is, the power supply communication device is in one of a communication state and a charging state at the same time, so that the power supply communication device realizes communication with the subsea monitoring device 1 by controlling the same resonator to resonate in different frequencies, and realizes wireless charging to the subsea monitoring device. Compare in prior art, not only reduced the use of watertight joint and cable, realized the stable communication of short distance and stably charged, and use same synthon to realize communication and wireless charging in different equipment, greatly practiced thrift the cost.
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, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
Fig. 1 is a schematic diagram of a framework of an embodiment of the subsea monitoring device of the underwater communication power supply system based on magnetic communication according to the present invention.
Fig. 2 is a schematic frame diagram of a power supply communication device of an underwater communication power supply system based on magnetic communication according to an embodiment of the present invention.
Fig. 3 is a schematic circuit connection diagram of a resonant body, a resonant capacitor and a digital potentiometer of the underwater communication power supply system based on magnetic communication.
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious 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 derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that all the directional indicators (such as up, down, left, right, front, and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the movement situation, etc. in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indicator is changed accordingly.
In addition, the descriptions related to "first", "second", etc. in the present invention are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.
Referring to fig. 1-2, fig. 1 is a schematic block diagram of an embodiment of a power supply communication device 20 of the present invention, and fig. 2 is a schematic block diagram of an embodiment of a seafloor monitoring device 10 of the present invention, wherein a dashed line represents a signal transmission path and a solid line represents a power transmission path. The invention provides an underwater communication power supply system based on magnetic communication, which comprises an underwater monitoring device 10 and a power supply communication device 20 mounted on an underwater robot (not shown), wherein the power supply communication device 20 and the underwater monitoring device 10 both comprise a resonance body 11 (21), when the underwater robot moves to a predetermined range of the position of the underwater monitoring device 10, the resonance body 21 of the power supply communication device 20 and the resonance body 11 of the underwater monitoring device 10 resonate in a first frequency band or a second frequency band, the power supply communication device 20 and the underwater monitoring device 10 realize communication between the two devices through the first frequency band, the power supply communication device 20 supplies power to the underwater monitoring device 10 through the second frequency band, and the first frequency band is different from the second frequency band.
In this embodiment, the underwater robot is configured to drive the power supply communication device 20 to move between different seafloor monitoring devices 10, and under the driving of the underwater robot, when the power supply communication device 20 enters a predetermined range of the seafloor monitoring devices 10, the power supply communication device 20 communicates with the seafloor monitoring devices 10 to obtain monitoring data, such as hydrological data, detected by the seafloor monitoring devices 10, and meanwhile, within the predetermined range, the power supply communication device 20 is further configured to wirelessly charge the seafloor monitoring devices 10 to ensure that the seafloor monitoring devices 10 have enough power to continuously maintain operation. The number of the subsea monitoring devices 10 is at least one as a subsea monitoring node, and a plurality of the subsea monitoring devices 10 may form a subsea observation station, a subsea observation chain, or a subsea observation network, so as to monitor a wider subsea area.
In this embodiment, the power supply communication device 20 and the subsea monitoring device 10 communicate with each other by using a magnetic resonance technology, so that stable communication between the power supply communication device 20 and the subsea monitoring device 10 over a medium-short distance can be ensured, specifically, in the prior art, when acquiring monitoring data acquired by a subsea monitoring node by using technologies such as a subsea wireless radio frequency communication technology, the distance between the subsea device acquiring the monitoring data and the subsea monitoring node needs to be very close, and even the subsea device and the subsea monitoring node need to be abutted against each other or fixed to each other, so as to achieve high coupling, thereby achieving stable communication over an ultra-short distance, whereas in this embodiment, due to the use of the magnetic resonance technology, the power supply communication device 20 and the subsea monitoring device 10 can achieve subsea communication within a distance of 0.5 meter, and in an actual working subsea environment, under the influence of ocean currents on the seabed, when the underwater wireless radio frequency communication technology or other communication technologies are used for communication, the coupling coefficient between the underwater equipment and the underwater monitoring node can be changed constantly, so that data transmission is unstable, in the embodiment, the power supply communication equipment 20 and the seabed monitoring equipment 10 can realize medium-short distance communication within 0.5 m, the coupling requirement is relatively low, and even if relative movement occurs under the influence of the ocean currents on the seabed, stable medium-short distance communication can be realized as long as the distance between the power supply communication equipment 20 and the seabed monitoring equipment 10 is ensured to be within 0.5 m, and the unstable communication condition cannot occur.
Further, in this embodiment, the power supply communication device 20 charges the subsea monitoring device 10 based on a magnetic resonance technology, so that it can be ensured that the power supply communication device 20 performs stable wireless charging on the subsea monitoring device 10 at a medium-short distance, specifically, in the prior art, the distance between the underwater device and the subsea monitoring node needs to be very close, and even the underwater device and the subsea monitoring node need to be attached or fixed to each other, so as to achieve high coupling, thereby achieving stable wireless charging on the subsea monitoring node by the underwater device, and in this embodiment, due to the magnetic resonance technology, the power supply communication device 20 can perform stable wireless power supply on the subsea monitoring device 10 within a distance of 0.5 meter. In an actual working underwater environment, under the influence of ocean currents on the seabed, when an underwater monitoring node is charged by other wireless charging technologies, the coupling coefficient between the underwater equipment and the underwater monitoring node is constantly changed, so that the wireless charging process is unstable, and in the embodiment, as the power supply communication equipment 20 can wirelessly supply power to the underwater monitoring equipment 10 within a distance of 0.5 meter, even if relative movement occurs under the influence of the ocean currents on the power supply communication equipment 20, stable wireless charging can be realized as long as the distance between the power supply communication equipment 20 and the underwater monitoring equipment 10 is ensured to be within 0.5 meter, and the unstable wireless charging condition cannot occur.
In this embodiment, specifically, the power supply communication device 20 and the subsea monitoring device 10 each include a resonator 11 (21), when the underwater robot moves to a predetermined range, for example, within 0.5 meter, of the location of the subsea monitoring device 10, the resonator 21 of the power supply communication device 20 and the resonator 11 of the subsea monitoring device 10 resonate in a first frequency band or a second frequency band, and when the two resonators 11 (21) resonate in the first frequency band, the power supply communication device 20 and the subsea monitoring device 10 communicate with each other through the first frequency band to implement data transmission therebetween, in particular, to implement uploading of monitoring data from the subsea monitoring device 10 to the power supply communication device 20; when the two resonators 11 (21) resonate in the second frequency band, the power supply communication device 20 supplies power to the subsea monitoring device 10 through the second frequency band, where the first frequency band is different from the second frequency band, that is, the power supply communication device 20 is in one of a communication state and a charging state at the same time, so that the power supply communication device 20 realizes communication with the subsea monitoring device 10 and wireless charging to the subsea monitoring device 10 by controlling the same resonator 11 to resonate in different frequencies, and similarly, the power supply communication device 20 realizes communication with the power supply communication device 20 by controlling the same resonator 21 to resonate in different frequencies, and receives power transmitted by the power supply communication device 20 through the same resonator 21. Compared with the prior art, the use of watertight joints and cables is reduced, stable communication and stable charging at medium and short distances are realized, the same resonator body 11 (21) is used in different devices to realize communication and wireless charging, and the cost is greatly saved.
Further, the first frequency band is larger than the second frequency band.
In this embodiment, the first frequency band is greater than the second frequency band, for example, the first frequency band may be a 13.56MHz frequency band, and the second frequency band may be an 85kHz frequency band, so that when two resonators 11 (21) resonate in the first frequency band for communication, high-speed transmission of information can be ensured, and when two resonators 11 (21) resonate in the second frequency band for wireless charging, loss of electric energy in a charging process can be reduced, and efficient transmission of electric energy is ensured.
Referring to fig. 1-3, further, the resonator 11 (21) includes three toroidal coils 111 (211) connected in series, the diameters and the numbers of turns of the three toroidal coils 111 (211) are the same and have a common center, and planes of the three toroidal coils 111 (211) are perpendicular to each other.
In this embodiment, the toroidal coils 111 (211) are formed by winding fine small-diameter coils, and the fine small-diameter coils have a certain loss compared with the thick-line sparse large-diameter coils, but can ensure communication stability and responsiveness, and it is to be particularly noted that the diameters and the turns of the three serially connected toroidal coils 111 (211) are the same and have a common center, two planes on which the three toroidal coils 111 (211) are located are perpendicular to each other, that is, the three toroidal coils 111 (211) are arranged in a pairwise orthogonal manner, so that two resonators 11 (21) have a certain coupling coefficient in each direction, thereby realizing omnidirectional communication and wireless charging, that is, the resonators 11 (21) are omnidirectional antennas during communication, and mutual inductance between the three toroidal coils 111 (211) perpendicular to each other is 0, and the mutual interference is completely avoided, so that when the power supply communication equipment 20 carried by the underwater robot moves to a communication range, stable and efficient communication or charging can be realized, the distance between the power supply communication equipment 20 and the seabed monitoring equipment 10 does not need to be shortened to an ultra-short distance or even abutted, and the two devices do not need to be aligned.
Referring to fig. 1 to 3, further, the power supply communication device 20 and the seafloor monitoring device 10 each further include: microcontroller 12 (22); a digital potentiometer 13 (23), said digital potentiometer 13 (23) being connected to said microcontroller 12 (22) and in parallel with said resonator body 11 (21); a resonant capacitor 14 (24), said resonant capacitor 14 (24) being in series with said resonator body 11 (21); the microcontroller 12 (22) adjusts the self-inductance coefficient of the resonator 11 (21) by adjusting the resistance value of the digital potentiometer 13 (23), so as to adjust the resonator 11 (21) to resonate in the first frequency band or the second frequency band.
In the present embodiment, in the powered communication device 20 and the subsea monitoring device 10, by connecting the resonance capacitor 14 (24) in series with the resonant body 11 (21) and connecting the digital potentiometer 13 (23) in parallel with the resonant body 11 (21), and connecting the digital potentiometer 13 (23) to the microcontroller 12 (22), the microcontroller 12 (22) adjusts the resistance value of the digital potentiometer 13 (23) to change the self-inductance of the resonant body 11 (21), so as to adjust the resonant frequency of the resonant body 11 (21) to the first frequency band or the second frequency band, wherein in a default state, the resonant body 11 (21) resonates in the first frequency band, and the subsea monitoring device 10 is in a signal receiving state by default, and the powered communication device 10 is in a signal transmitting state by default, to enable communication between the powered communication device 20 and the subsea monitoring device 10. Meanwhile, the optimal load resistance of the connection mode is several ohms to dozens of ohms, the load interval of the working of the embodiment is met, and the charging and communication can be guaranteed to work at high efficiency.
Referring to fig. 1-2, further, the powered communication device 20 and the seafloor monitoring device 10 each further include: a digital control analog switch 15 (25), wherein the digital control analog switch 15 (25) is electrically connected between the microcontroller 12 (22) and the resonance capacitor 14 (24); the modulation module 16 (26) and the transmitting amplifying circuit 17 (27), the microcontroller 12 (22) is electrically connected with the numerical control analog switch 15 (25) through the modulation module 16 (26) and the transmitting amplifying circuit 17 (27) in sequence; the demodulation module 18 (28) and the receiving amplification circuit 19 (29), the numerical control analog switch 15 (25) is electrically connected with the microcontroller 12 (22) through the receiving amplification circuit 19 (29) and the demodulation module 18 (28) in sequence; the microcontroller 12 (22) controls the input and output states of the digitally controlled analog switch 15 (25) to switch the resonator 11 (21) between a signal receiving state, a signal transmitting state and a charging state.
In the present embodiment, in the power supply communication device 20 and the seafloor monitoring device 10, the microcontroller 12 (22), the modulation module 16 (26), the transmission amplifying circuit 17 (27), the digitally controlled analog switch 15 (25), and the resonant capacitor 14 (24) are connected in sequence, and form a signal transmission loop together with the resonant body 11 (21); the resonant capacitor 14 (24), the digital control analog switch 15 (25), the receiving amplifying circuit 19 (29), the demodulation module 18 (28) and the microcontroller 12 (22) are connected in sequence, and form a signal receiving loop together with the resonant body 11 (21); the microcontroller 12 (22) controls the input/output state of the digital control analog switch 15 (25) to switch the resonator 11 (21) between a signal receiving state, a signal transmitting state and a charging state, and specifically includes:
(1) the microcontroller 12 (22) controls the input of the digitally controlled analog switch 15 (25) to be the output of the resonant capacitor 14 (24), and the signal receiving loop is turned on when the output of the digitally controlled analog switch 15 (25) is the input of the receiving amplifying circuit 19 (29), at this time, the resonant body 11 (21) of the power supply communication device 20 and the seafloor monitoring device 10 is in a signal receiving state;
(2) the microcontroller 12 (22) controls the output of the digitally controlled analog switch 15 (25) to be used as the input of the resonant capacitor 14 (24), and when the input of the digitally controlled analog switch 15 (25) is used as the output of the transmitting amplifying circuit 17 (27), the signal transmitting loop is turned on, and at this time, the resonant body 11 (21) of the power supply communication device 20 and the seafloor monitoring device 10 is in a signal transmitting state;
it is understood that when the signal receiving loop in the power supply communication device 20 is conductive, the signal transmitting loop of the subsea monitoring device 10 is conductive, thereby enabling the subsea monitoring device 10 to send data to the powered communications device 20, and vice versa, when the signal transmitting loop in the power supply communication equipment 20 is conducted, the signal receiving loop of the subsea monitoring equipment 10 is conducted, so that the power supply communication equipment 20 sends data to the subsea monitoring equipment 10, before the communication process, the microcontroller 12 (22) changes the self-inductance coefficient of the resonant body 11 (21) by adjusting the resistance value of the digital potentiometer 13 (23), thereby, the resonance frequency of the resonance body 11 (21) is adjusted to the first frequency band, so as to realize signal receiving and signal transmitting between the power supply communication equipment 20 and the seafloor monitoring equipment 10.
Referring to fig. 2, further, the power supply communication device 20 further includes: a watertight interface 30, said watertight interface 30 being electrically connected to said microcontroller 22, and said watertight interface 30 also being for electrical connection to said underwater robot; an inverter 31, the inverter 31 being electrically connected to the watertight interface 30; and the power device 32, wherein the power device 32 is electrically connected with the microcontroller 22, the inverter 31 and the numerical control analog switch 25.
In the present embodiment, in the power supply communication device 20, the watertight interface 30, the inverter 31, the power device 32, the digitally controlled analog switch 25, and the resonant capacitor 24 are sequentially connected, and form a power supply loop in the power supply communication device 20 together with the resonant body 21, wherein the watertight interface 30, the power device 32, and the digitally controlled analog switch 25 are all connected to the microcontroller 22 to receive the control of the microcontroller 22; wherein, when the microcontroller 22 controls the input of the digital control analog switch 25 as the output of the power device 32 and the output of the digital control analog switch 25 as the input of the resonant capacitor 24, the power supply loop is turned on, and at the same time, the microcontroller 22 further adjusts the resistance value of the digital potentiometer 23 to change the self-inductance coefficient of the resonator 21, so as to adjust the resonant frequency of the resonator 21 to the second frequency band, and resonate in the second frequency band through the resonator 21, so as to charge the subsea monitoring device 10. The inverter 31 is configured to convert direct current transmitted by the underwater robot into alternating current, and the alternating current is adjusted by the power device 32 and then output to the digital control analog switch 25.
Referring to fig. 2, further, the power supply communication device 20 further includes: the first housing 33, the resonant body 21 and the watertight interface 30 are disposed on an outer surface of the first housing 33, and the microcontroller 22, the digital potentiometer 23, the resonant capacitor 24, the digital control analog switch 25, the modulation module 26, the transmission amplification circuit 27, the demodulation module 28, the reception amplification circuit 29, the inverter 31 and the power device 32 are disposed in the first housing 33.
In this embodiment, the first housing 33 may be made of acrylic material, and is preferably tubular in shape, and by disposing the resonant body 21 outside the first housing 33, the resonant body 21 of the power supply and communication device 20 and the resonant body 11 of the subsea monitoring device 10 are made to resonate, so as to avoid the interference of the resonant body 21 with the electronic devices inside the first housing 33; by arranging the watertight interface 30 in the first housing 33, the watertight interface 30 is used for being plugged into the underwater robot to realize electrical connection, when the resonant body 21 of the power supply communication device 20 is in a charging state, the power supply communication device 20 obtains electric energy from the underwater robot through the watertight interface 30, and supplies power to the energy storage battery 102 in the subsea monitoring device 10 through the resonant body 21 resonating in a second frequency band; when the resonance body 21 of the power supply communication device 20 is in a signal receiving state, the power supply communication device 20 sends the received signal to the underwater robot through the watertight interface 30; when the resonance body 21 of the power supply communication device 20 is in a signal transmission state, the microcontroller 22 acquires a signal to be transmitted by the underwater robot from the watertight interface 30, and transmits the signal to the seafloor monitoring device 10 by controlling the resonance body 21 to vibrate in a first frequency band; meanwhile, the microcontroller 22, the digital potentiometer 23, the resonant capacitor 24, the modulation module 26, the transmission amplification circuit 27, the demodulation module 28, the reception amplification circuit 29, the inverter 31 and the power device 32 are all arranged in the first housing 33, so that the microcontroller 22, the digital potentiometer 23, the resonant capacitor 24, the numerical control analog switch 25, the modulation module 26, the transmission amplification circuit 27, the demodulation module 28, the reception amplification circuit 29, the inverter 31 and the power device 32 are prevented from being influenced by a severe submarine environment.
Referring to fig. 1, further, the seafloor monitoring device 10 further includes: the high-frequency rectifying and filtering circuit 101 is electrically connected with the numerical control analog switch 15; and the energy storage battery 102 is electrically connected with the high-frequency rectifying and filtering circuit 101 and the microcontroller 12.
In this embodiment, in the subsea monitoring device 10, the digitally controlled analog switch 15, the high-frequency rectifying and filtering circuit 101, and the energy storage battery 102 are sequentially connected, and form a power receiving loop together with the resonator 11, wherein the digitally controlled analog switch 15 is further connected to the microcontroller 12 to receive control from the microcontroller 12; the microcontroller 12 controls the input of the digital control analog switch 15 to be the output of the resonant capacitor 14, and the output of the digital control analog switch 15 to be the input of the high-frequency rectification filter circuit 101, the power supply loop is turned on, and meanwhile, the microcontroller 12 also adjusts the resistance value of the digital potentiometer 13 to change the self-inductance coefficient of the resonator 11, so as to adjust the resonant frequency of the resonator 11 to the second frequency band, and the resonator 11 resonates in the second frequency band to charge the energy storage battery 102. The energy storage battery 102 may be a battery cell or a battery pack.
Referring to fig. 1, further, the seafloor monitoring device 10 further includes: at least one detection sensor 103, said detection sensor 103 being electrically connected to said microcontroller 12.
In this embodiment, according to actual needs, the subsea monitoring device 10 may include one or more different types of the detection sensors 103 for detecting monitoring data around the subsea monitoring device 10 and transmitting the monitoring data to the powered communication device 20 and the underwater robot from the subsea monitoring device 10 through the resonant body 11; the detection sensors 103 include, but are not limited to, temperature sensors, depth sensors, salinity sensors, water flow rate and direction sensors, fluorescence sensors, ocean bottom acoustic pressure sensors, ocean current meters, geophysical sensors, geophones, tsunami sensors, inclinometers, magnetometers, turbidimeters, and the like.
Further, the seafloor monitoring device 10 further comprises: the resonance body 11 is arranged on the outer surface of the second shell 104, and the microcontroller 12, the digital potentiometer 13, the resonance capacitor 14, the modulation module 16, the digital control analog switch 15, the transmission amplifying circuit 17, the demodulation module 18, the reception amplifying circuit 19 and the detection sensor 103 are all arranged in the second shell 104.
In this embodiment, the second housing 104 may be made of acrylic material and is preferably tubular in shape, and by disposing the resonator body 11 outside the second housing 104, the resonator body 11 of the subsea monitoring device 10 and the resonator body 11 of the power supply communication device 20 are made to resonate, so as to prevent the resonator body 11 from being interfered by the electronic devices inside the second housing 104; meanwhile, the microcontroller 12, the digital potentiometer 13, the resonant capacitor 14, the modulation module 16, the transmitting amplification circuit 17, the demodulation module 18, the receiving amplification circuit 19 and the sensor are all arranged in the second shell 104, so that the microcontroller 12, the digital potentiometer 13, the resonant capacitor 14, the numerical control analog switch 15, the modulation module 16, the transmitting amplification circuit 17, the demodulation module 18, the receiving amplification circuit 19 and the sensor are prevented from being influenced by a severe submarine environment.
Based on the underwater communication power supply system based on magnetic communication provided above, taking the subsea monitoring device 10 as an underwater monitoring node for monitoring subsea hydrology as an example, the working process of the underwater communication power supply system will be described:
when monitoring data of an underwater monitoring node needs to be collected, the underwater robot carries the power supply communication device 20 to move together, when the underwater robot moves to a communication range of a resonator 11 of the seabed monitoring device 10, the underwater robot sends a message requesting communication to a microcontroller 22 of the power supply communication device 20 through a watertight interface 30, after the microcontroller 22 receives the message, because the power supply communication device 20 is in a signal transmission state of a communication mode by default, the microcontroller 22 controls the modulation module 26 to generate a communication request signal, the communication request signal is amplified by a transmission amplifying circuit 27 and then output to the numerical control analog switch 25, the numerical control analog switch 25 outputs to the resonance capacitor 24, and then sends a changing magnetic field outwards in a first frequency band such as 13.56MHz through the resonator 21, after the transmission is completed, the microcontroller 22 controls the digital control analog switch 25 to change the input of the digital control analog switch 25 to the output of the resonant capacitor 24, and changes the output of the digital control analog switch 25 to the input of the receiving and amplifying circuit 29, so as to enter a signal receiving state of a communication mode and wait for the subsea monitoring device 10 to answer.
Because the subsea monitoring device 10 is in a signal receiving state of a communication mode by default, the resonant body 11 of the subsea monitoring device 10 analyzes the received magnetic field signal into a digital signal through the resonant capacitor 14, the digitally controlled analog switch 15, the receiving amplification circuit 19 and the demodulation module 18 in sequence, and sends the digital signal to the microcontroller 12 of the subsea monitoring device 10; the microcontroller 12 controls the digital control analog switch 15 to change its input to the output of the transmitting amplifying circuit 17, and outputs the digital control analog switch 15 as the input of the resonant capacitor 14, so that the seabed monitoring equipment 10 enters a signal transmitting state of a communication mode; the microcontroller 12 controls the modulation module 16 to generate a response signal, and the response signal sequentially passes through the modulation module 16, the transmitting amplification circuit 17, the numerical control analog switch 15, the resonant capacitor 14 and the resonator 11 to send a variable magnetic field outwards at a first frequency band, such as a 13.56MHz frequency band; the microcontroller 12 enters a signal reception state of the communication mode in a similar operation as described above, waiting for a response confirmation signal of the power supply communication device 20.
After receiving the response signal of the subsea monitoring device 10, the power supply communication device 20 replies a response confirmation signal in the signal transmitting state entering the communication mode through the similar operation, and then enters the signal receiving state of the communication mode to wait for the subsea monitoring device 10 to return the hydrological information of the underwater monitoring node; after obtaining the confirmation signal, the seafloor monitoring device 10 starts to send the hydrological information, enters a signal receiving state of a communication mode after the sending is finished, and waits for the next instruction; the power supply communication device 20 receives the hydrological information until receiving the end mark, and the power supply communication device 20 completes data acquisition.
When the energy storage battery 102 of the seafloor monitoring device 10 is operated for a period of time, the energy storage battery 102 needs to be charged, when the electric quantity is insufficient, the seafloor monitoring device 10 sends information of the residual electric quantity and a charging request to the power supply communication device 20, after the power supply communication device 20 receives the charging request, a confirmation signal is sent to the seafloor monitoring device 10 to wait for confirmation reply of the seafloor monitoring device 10, after the seafloor monitoring device 10 receives the confirmation signal, a confirmation reply signal is sent, then the microcontroller 12 adjusts the resistance value of the digital potentiometer 13, so as to change the self-inductance coefficient of the resonator 11, adjust the resonance frequency of the resonator 11 to a second frequency band, simultaneously change the input of the numerical control analog switch 15 to the output of the resonance capacitor 14, and change the output of the numerical control analog switch 15 to the input of the high-frequency rectification filter circuit 101, the subsea monitoring device 10 enters a charging mode to wait for power delivery; after the power supply communication device 20 obtains the confirmation reply signal, the microcontroller 22 adjusts the resistance value of the digital potentiometer 23, further adjusts the resonant frequency of the resonant body 21 to the second frequency band, changes the input of the numerical control analog switch 25 to the output of the power device 32, changes the output of the numerical control analog switch 25 to the input of the resonant capacitor 24, and the power supply communication device 20 enters the charging mode; the microcontroller 22 communicates with the underwater robot through the watertight interface 30, requesting the underwater robot to discharge; electric energy of the underwater robot passes through the watertight interface 30 and the inverter 31 in a direct current mode, the inverter 31 converts the direct current into alternating current, and then the alternating current is converted into a variable magnetic field of a second frequency band such as an 85kHz frequency band through the power device 32, the numerical control analog switch 25, the resonant capacitor 24 and the resonant body 21 in sequence and is transmitted outwards; the magnetic energy received by the seabed monitoring equipment 10 is converted into direct current through the resonator 11, the resonant capacitor 14, the numerical control analog switch 15 and the high-frequency rectification filter circuit 101 to charge the energy storage battery 102.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (8)
1. An underwater communication power supply system based on magnetic communication is characterized by comprising a seabed monitoring device and a power supply communication device carried on an underwater robot, wherein the power supply communication device and the seabed monitoring device both comprise a resonance body, when the underwater robot moves to a preset range of the position of the seabed monitoring device, the resonance body of the power supply communication device and the resonance body of the seabed monitoring device resonate in a first frequency band or a second frequency band, the power supply communication device and the seabed monitoring device realize communication between the power supply communication device and the seabed monitoring device through the first frequency band, the power supply communication device supplies power to the seabed monitoring device through the second frequency band, and the first frequency band is different from the second frequency band;
the power supply communication equipment and the seafloor monitoring equipment both further comprise:
a microcontroller;
a digital potentiometer connected to the microcontroller and in parallel with the resonator body;
a resonant capacitor connected in series with the resonator body;
the microcontroller adjusts the self-inductance coefficient of the resonance body by adjusting the resistance value of the digital potentiometer, so that the resonance body is adjusted to be in a first frequency band or a second frequency band;
the numerical control analog switch is electrically connected between the microcontroller and the resonant capacitor;
the microcontroller is electrically connected with the numerical control analog switch through the modulation module and the transmitting amplification circuit in sequence;
the digital control analog switch is electrically connected with the microcontroller through the receiving amplifying circuit and the demodulating module in sequence;
the microcontroller controls the input and output states of the numerical control analog switch so as to switch the resonator between a signal receiving state, a signal transmitting state and a charging state.
2. The magnetic communication-based underwater communications power supply system of claim 1 wherein said first frequency band is greater than said second frequency band.
3. The underwater magnetic communication power supply system as claimed in claim 1, wherein the resonator comprises three annular coils which are connected in series, the diameters and the turns of the three annular coils are the same and have a common circle center, and planes of the three annular coils are perpendicular to each other.
4. The underwater communication power supply system based on magnetic communication as claimed in claim 1, wherein said power supply communication device further comprises:
a watertight interface electrically connected with the microcontroller and further for electrically connecting with the underwater robot;
an inverter electrically connected to the watertight interface;
and the power device is electrically connected with the microcontroller, the inverter and the numerical control analog switch.
5. The underwater communication power supply system based on magnetic communication as claimed in claim 4, wherein said power supply communication device further comprises:
the resonance body and the watertight interface are arranged on the outer surface of the first shell, and the microcontroller, the digital potentiometer, the resonance capacitor, the modulation module, the transmitting amplification circuit, the numerical control analog switch, the demodulation module, the receiving amplification circuit, the inverter and the power device are arranged in the first shell.
6. The magnetic communication-based subsea communication power supply system of claim 4, wherein said subsea monitoring device further comprises:
the high-frequency rectifying and filtering circuit is electrically connected with the numerical control analog switch;
and the energy storage battery is electrically connected with the high-frequency rectifying and filtering circuit and the microcontroller.
7. The magnetic communication-based subsea communication power supply system of claim 5, wherein said subsea monitoring device further comprises:
at least one detection sensor electrically connected to the microcontroller.
8. The magnetic communication-based subsea communication power supply system of claim 7, wherein said subsea monitoring device further comprises:
the resonance body is arranged on the outer surface of the second shell, and the microcontroller, the digital potentiometer, the resonance capacitor, the modulation module, the transmitting amplification circuit, the numerical control analog switch, the demodulation module, the receiving amplification circuit and the sensor are all arranged in the second shell.
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| WO2015061780A1 (en) * | 2013-10-25 | 2015-04-30 | Greene Charles E | Bi-stable display tag |
| CN104600877A (en) * | 2015-02-13 | 2015-05-06 | 哈尔滨工业大学 | Wireless power transmission device with sidesway adaptability and rotation adaptability |
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