CN111446779A - Underwater magnetic coupling resonant wireless charging and communication cable joint - Google Patents
Underwater magnetic coupling resonant wireless charging and communication cable joint Download PDFInfo
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- CN111446779A CN111446779A CN202010264959.1A CN202010264959A CN111446779A CN 111446779 A CN111446779 A CN 111446779A CN 202010264959 A CN202010264959 A CN 202010264959A CN 111446779 A CN111446779 A CN 111446779A
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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
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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
- H02J50/80—Circuit arrangements or systems for wireless supply or distribution of electric power involving the exchange of data, concerning supply or distribution of electric power, between transmitting devices and receiving devices
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Power Engineering (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention relates to a cable joint, in particular to a cable joint for underwater wireless charging and wireless communication. An underwater magnetic coupling resonant wireless charging and communication cable joint comprises a transmitting end and a receiving end, wherein the transmitting end consists of a transmitting end controller and a transmitting end coil, and the receiving end consists of a receiving end controller and a receiving end coil; one end of the transmitting end controller is hermetically connected with the 4-core cable, and the other end of the transmitting end controller is connected with the transmitting end coil; one end of the receiving end controller is hermetically connected with the 4-core cable, and the other end of the receiving end controller is connected with the receiving end coil; and the transmitting end coil and the receiving end coil carry out power transmission in an electromagnetic mutual inductance mode. According to the cable connector, the wireless communication module and the MCU are designed, so that wireless data transmission between the transmitting end and the receiving end is realized, wireless communication can be used for replacing wired communication, closed-loop control is formed between the transmitting end and the receiving end, and power supply transmission is controlled more conveniently.
Description
Technical Field
The invention relates to a cable joint, in particular to a cable joint for underwater wireless charging and wireless communication.
Background
The marine ecological environment monitoring is realized mainly by various underwater sensors, underwater and sea surface buoys, shore-based platforms and the like. The sea surface buoy, the shore base station and the underwater sensor are connected through 4-core cables, and each of the sea surface buoy, the shore base station and the underwater sensor comprises 2 power lines and 2 signal lines. At present, cables are mainly connected by plug-in watertight joints, and the connection mode has several defects: firstly, the cable joint cannot be plugged underwater; secondly, the seaside environment is humid, and the watertight connector is easy to be drained and scrapped when the sensor is maintained or repaired regularly; thirdly, the sea condition environment is complex, and external forces such as underwater ocean currents, waves and the like easily cause water short circuit of the watertight connector. The existence of these problems brings great inconvenience to equipment maintenance personnel, and risks such as instrument equipment burnout or personnel electric shock can be caused by short circuit by carelessness. And the watertight joint is used as a vulnerable article, so that the cost loss is higher.
Utilize the electromagnetic induction principle to realize the mutual inductance power transmission of non-direct connection of coil, replace traditional wire through the power supply connected mode that the plug directly links, the coil can be by the sealed parcel of non-metallic insulating material, even if soak in aqueous can not take place wire and water direct contact yet and cause the danger of short circuit. Therefore, the chinese utility model discloses a mutual inductance type underwater plug and socket, patent No. 201520870233.7, which comprises a plug end and a socket end, wherein at least two plug phase iron cores are arranged in the plug end, a plug lead coil is wound on the plug phase iron cores, and the plug lead coil is connected with a plug phase lead; the outer layer of the plug end is wrapped with a plug shell; the plug shell is an insulating material shell; at least two socket iron cores are arranged in the socket end, socket lead coils are wound on the socket iron cores, and the socket lead coils are connected with socket phase leads; the outer layer of the socket end is wrapped with a socket shell; the socket shell is an insulating material shell.
Although the above patent solves the problem of underwater charging, the following disadvantages exist: 1. the built-in winding of input end generally has the current to pass through the state for a long time, and this kind of design both can waste a large amount of energy, causes the electromagnetic field pollution of certain scope and frequency, can reduce the life of insulating layer because of conductor long-term heating again, causes new electric leakage hidden danger. 2. The general design of conductor winding in output (plug) is mostly closed circuit, before the plug inserts design operating position completely, and general plug rear end lead wire also has voltage output, and such design structure has the potential safety hazard on the one hand, and the undulant output voltage of on the other hand also can produce the damage to electrical apparatus for the rear end.
In addition, the chinese utility model patent 201721707923.6 also discloses an underwater charging connection device for ocean, which comprises a socket with a plurality of slots and a plug matched with the slots, wherein a magnetizer is arranged in the socket, socket conduction switches are respectively arranged at the bottoms of the slots, a live wire of an input lead is wound on the magnetizer as a power input end after being led into the socket and passing through the socket conduction switches in the insulation package under each parallel slot, and a zero line is led out of the socket after winding; the front part of the plug is provided with a plug conduction switch, a lead winding which is spirally arranged is wound in the plug, one end of the socket conduction switch is connected with a leading-out end of the lead winding, and the other end of the lead winding and the other end of the plug conduction switch are respectively led out of the plug and connected with an external electrical appliance.
The technical scheme disclosed by the patent has the following defects and shortcomings:
1. the input end winding coil is prevented from being in a conductive state for a long time through a socket and a plug switch-on mode, but repeated pressing deformation of the switch can cause fatigue damage of an insulating layer, so that the risk of water leakage occurs, and the state of the switch can be influenced by underwater pressure.
2. The change of magnetic flux in the process of inserting and pulling out the input end coil and the output end coil can cause the voltage and current fluctuation in the circuit, thereby causing damage to rear-end electronic elements.
3. The input end generates magnetic field change through alternating current, the frequency of the magnetic field change is not convenient to control, and high-frequency magnetic flux change is difficult to realize.
4. Only the power supply mode is improved, and the requirement of wireless communication cannot be met.
Disclosure of Invention
Based on the problems and the defects in the prior art, the invention provides the underwater magnetic coupling resonant wireless charging and communication cable joint, which can replace wired communication with wireless communication, can also carry out power transmission in an electromagnetic mutual inductance mode, and can adjust the change frequency of a magnetic field according to the requirement to realize the change of high-frequency magnetic flux; the impact and damage of voltage and current fluctuation caused by the change of the magnetic field to the rear-end electronic component are eliminated.
The technical scheme adopted by the invention for solving the technical problems is as follows: an underwater magnetic coupling resonant wireless charging and communication cable joint comprises a transmitting end and a receiving end, wherein the transmitting end consists of a transmitting end controller and a transmitting end coil, and the receiving end consists of a receiving end controller and a receiving end coil; one end of the transmitting end controller is hermetically connected with the 4-core cable, and the other end of the transmitting end controller is connected with the transmitting end coil; one end of the receiving end controller is hermetically connected with the 4-core cable, and the other end of the receiving end controller is connected with the receiving end coil; and the transmitting end coil and the receiving end coil carry out power transmission in an electromagnetic mutual inductance mode.
As a preferred mode of the present invention, the transmitting end controller includes: the device comprises a voltage stabilizing and reducing module, an MCU (micro control unit), a wireless communication module and a primary side energy transmission module; the voltage stabilizing and reducing module is used for receiving a power supply input by the 4-core cable and stabilizing and reducing the input voltage; the MCU reads a communication signal input by the 4-core cable, and then transmits the signal to a receiving end through the wireless communication module; the primary side energy transmission module provides a high-frequency excitation source for the transmitting end coil.
As a preferable mode of the present invention, the voltage stabilizing and reducing module includes: a voltage stabilizing circuit and a voltage reducing circuit; the voltage stabilizing circuit stabilizes the input voltage, provides higher voltage and provides a direct current power supply for an excitation source of the primary side energy transmission module; the voltage reduction circuit is used for reducing the voltage of the voltage stabilized and supplying power to the MCU micro control unit and the wireless communication module.
As a preferred mode of the present invention, the primary side energy transmission module includes an inverter circuit, a switching circuit, and a compensation circuit; the inverter circuit provides a high-frequency excitation source for the transmitting end coil, and the compensation circuit is used for compensating electric energy transmission loss caused by leakage inductance.
Further preferably, the MCU micro control unit can perform on-off control on the primary side energy transmission module according to the signal content, and the primary side energy transmission module receives an on-off control command from the MCU micro control unit to control the on-off of the switching circuit.
As a preferred mode of the present invention, the receiving end controller includes an energy receiving module, a voltage detection circuit, an MCU micro control unit, and a wireless communication module;
the energy receiving module consists of a rectifying circuit, a voltage stabilizing circuit and a compensating circuit, wherein the rectifying circuit and the voltage stabilizing circuit rectify and stabilize the energy received by the receiving end coil and then output the energy to a rechargeable battery pack connected with an external 4-core cable power line to charge the battery pack; the compensation circuit can compensate the electric energy transmission loss caused by leakage inductance.
The voltage detection circuit detects the voltage condition of the external rechargeable battery pack, stabilizes the voltage of the battery pack and supplies power to the MCU micro control unit and the wireless communication module, when the voltage of the external rechargeable battery pack is lower than a certain threshold value, the voltage detection circuit reduces the voltage of the input end of the MCU micro control unit, and then the MCU micro control unit requires the transmitting end to start supplying power through the wireless communication module.
As a preferred mode of the present invention, the primary energy transmission module and the energy receiving module are respectively provided with a compensation circuit for compensating for an electric energy transmission loss caused by leakage inductance.
Further preferably, the wireless communication module is selected from a ZigBee module or a Bluetooth module, and is connected with a signal reading and writing end of the MCU.
As a preferred mode of the present invention, the transmitting end coil and the receiving end coil are concentric coils formed by winding copper wires with insulating covering on the surface layers.
Further preferably, in a power supply state, the circle centers of the transmitting end coil and the receiving end coil are overlapped and tightly attached; the total thickness of the non-metallic insulating material between the coils is about 6-8 mm.
Compared with the prior art, the invention has the beneficial effects that: according to the cable connector, the wireless communication module and the MCU are designed, so that wireless data transmission between the transmitting end and the receiving end is realized, wireless communication can be used for replacing wired communication, closed-loop control is formed between the transmitting end and the receiving end, and power supply transmission is controlled more conveniently. Meanwhile, a voltage stabilizing module and a high-frequency excitation module are designed at the transmitting end, so that the change frequency of the magnetic field can be adjusted more accurately according to the requirement; a rectification and voltage stabilizing circuit module is designed at a receiving end, so that impact and damage of voltage and current fluctuation caused by magnetic field change to rear-end electronic components are eliminated.
Drawings
FIG. 1 is a schematic diagram of an overall structure of an underwater magnetic coupling resonant wireless charging and communication cable joint according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of the structural connection and operation of the transmitting end;
fig. 3 is a schematic diagram of the structural connection and operation of the receiving end.
Detailed Description
The technical solutions in the embodiments of the present invention will be described relatively clearly and completely with reference to the accompanying 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.
One embodiment provided by the invention is as follows: an underwater magnetic coupling resonant wireless charging and communication cable joint is shown in fig. 1, and mainly comprises: a transmitting end controller 101, a transmitting end coil 102, a receiving end controller 103, and a receiving end coil 104. The transmitting end controller 101 and the transmitting end coil 102 constitute a transmitting end of the cable joint, and the receiving end controller 103 and the receiving end coil 104 constitute a receiving end of the cable joint. The transmitting end coil 102 and the receiving end coil 104 are both annular concentric circle coil windings.
4 leads are led out from one end of the transmitting end controller 101 and respectively comprise a power supply anode, a power supply cathode, a reading signal wire and a writing signal wire, the 4 leads are directly connected with the 4-core cable 109 in a sealing way, and the other end of the transmitting end controller is connected with two terminals of the core lead of the transmitting end coil 102. The surface layer of the transmitting end coil 102 and the conducting wires between the transmitting end controller 101 and the transmitting end coil 102 are all sealed and covered by non-metallic insulating materials.
4 leads are led out from one end of the receiving end controller 103 and respectively comprise a power supply anode, a power supply cathode, a reading signal wire and a writing signal wire, the 4 leads are directly connected with the 4-core cable 109 in a sealing way, and the other end of the 4 leads is connected with two terminals of the receiving end coil 104-core lead. The surface layer of the receiving end coil 104 and the lead between the receiving end controller 103 and the receiving end coil 104 are hermetically covered by a non-metallic insulating material.
As shown in fig. 2, the transmitting-end controller 101 includes: the system comprises a first MCU (microprogrammed control unit) micro-control unit 201, a first wireless communication module 202, a voltage stabilizing and reducing module 203 and a primary side energy transmission module 204.
The first MCU micro-control unit 201 reads the communication signal input by the 4-core cable, and then transmits the signal to the receiving end through the first wireless communication module 202, and meanwhile, the first MCU micro-control unit 201 can perform on-off control on the primary energy transmission module 204 according to the signal content.
The first wireless communication module 202 is configured to establish a connection with a wireless communication module at a receiving end, so as to implement wireless transmission of a communication signal. The primary side energy transmission module 204 provides a high-frequency excitation source for the transmitting end coil, can receive the switch control of the first MCU, and switches off the switch when charging is not needed, the transmitting end coil does not have current to pass through, and switches on the switch when charging is needed, so that power is supplied to the receiving end.
The voltage stabilizing and reducing module 203 is divided into a first stabilizing circuit 205 and a voltage reducing circuit 206. The voltage stabilizing and reducing module 203 receives a power supply input by a 4-core cable, and after being stabilized by the first voltage stabilizing circuit 205, the voltage is input to the primary side energy transmission module 204, and the first MCU micro control unit 201 and the first wireless communication module 202 are powered by the voltage reducing circuit 206.
The primary energy transfer module 204 is divided into a switching circuit 207, an inverter circuit 208 and a first compensation circuit 209. The inverter circuit 208 is formed by a voltage-type inverter bridge that provides a high-frequency excitation source for the transmitting-end coil. The switch circuit 207 is composed of a triode or a MOSFET switch tube, the switch circuit 207 receives the switch control of the first MCU micro-control unit 201, the switch is switched off when charging is not needed, and no current passes through a coil at the transmitting end; when charging is needed, the switch is turned on, and the coil at the transmitting end has current to pass through, so that electric energy is provided for the receiving end. The first compensation circuit 209 may compensate for power transmission loss due to leakage inductance.
As shown in fig. 3, the receiving-end controller 103 includes: an energy receiving module 301, a voltage detection circuit 302, a second MCU micro control unit 303 and a second wireless communication module 304.
The energy receiving module 301 is composed of a rectifying circuit 305, a second voltage stabilizing circuit 306 and a second compensating circuit 307, wherein the rectifying circuit 305 and the second voltage stabilizing circuit 306 rectify and stabilize the energy received by the receiving end coil and then output the energy to the rechargeable battery pack 108 connected with an external 4-core cable power line to charge the battery pack; the second compensation circuit 307 can compensate for the power transmission loss caused by the leakage inductance.
The voltage detection circuit 302 detects the voltage condition of the external rechargeable battery pack 108, stabilizes the voltage of the rechargeable battery pack 108 and supplies power to the second MCU microcontrol unit 303 and the second wireless communication module 304, when the voltage of the external rechargeable battery pack 108 is lower than a certain threshold, the voltage detection circuit 302 pulls down the voltage at the input terminal of the second MCU microcontrol unit 303, and then the second MCU microcontrol unit 303 requests the transmitting terminal to start supplying power through the second wireless communication module 304.
The underwater magnetic coupling resonant wireless charging and communication cable joint of the embodiment has the working principle that:
the voltage of the power supply 107 is transmitted through the 4-core cable, firstly enters the first voltage stabilizing circuit 205, is subjected to voltage stabilization processing, passes through the switching circuit 207, the inverter circuit 208 and the first compensating circuit 209, generates a high-frequency excitation source, excites the coil 102 at the transmitting end to generate magnetic flux change, and then transmits energy.
When the voltage value of the rechargeable battery pack 108 is lower than the set threshold, the voltage detection circuit 302 sends a low level signal to the second MCU microcontrol unit 303, the second MCU microcontrol unit 303 sends a charging request to the transmitting-end controller 101 through the second wireless communication module 304, and the switching circuit 207 is turned on to start outputting power to the receiving-end coil 104.
After the receiving end coil 104 converts the magnetic field into current, the external rechargeable battery pack 108 is continuously charged after rectification, voltage stabilization and compensation of the energy receiving module 301, until the electric quantity is full, the voltage detection circuit 302 sends a high level signal to the second MCU micro control unit 303, the second MCU micro control unit 303 requests the transmitting end controller 101 to turn off the switch circuit 207 through the second wireless communication module 304, and the charging process is ended.
The first communication terminal 105 sends a data signal to a read data port of the first MCU microcontrol unit 201, the first MCU microcontrol unit 201 analyzes and judges the data signal, and if the data signal is an on-off control signal, the on-off control of the power supply path is realized by controlling the switch circuit 207 through a control port of the first MCU microcontrol unit 201; if the data transmission signal is received, the first MCU micro control unit 201 forwards the data to the first wireless communication module 202, and then transmits the data to the receiving-end controller 103, and the second wireless communication module 304 forwards the received data to the second MCU micro control unit 303, and then transmits the data to the second communication terminal 106, thereby completing the data communication.
Claims (10)
1. The utility model provides an underwater magnetic coupling resonant wireless charging and communication cable connects, includes transmitting terminal and receiving terminal, its characterized in that: the transmitting end consists of a transmitting end controller and a transmitting end coil, and the receiving end consists of a receiving end controller and a receiving end coil; one end of the transmitting end controller is hermetically connected with the 4-core cable, and the other end of the transmitting end controller is connected with the transmitting end coil; one end of the receiving end controller is hermetically connected with the 4-core cable, and the other end of the receiving end controller is connected with the receiving end coil; and the transmitting end coil and the receiving end coil carry out power transmission in an electromagnetic mutual inductance mode.
2. The underwater magnetic coupling resonant wireless charging and communication cable joint as recited in claim 1, wherein: the transmitting end controller comprises a voltage stabilizing and reducing module, an MCU (micro control unit), a wireless communication module and a primary side energy transmission module; the voltage stabilizing and reducing module is used for receiving a power supply input by the 4-core cable and stabilizing and reducing the input voltage; the MCU reads a communication signal input by the 4-core cable, and then transmits the signal to a receiving end through the wireless communication module; the primary side energy transmission module provides a high-frequency excitation source for the transmitting end coil.
3. The underwater magnetic coupling resonant wireless charging and communication cable joint as recited in claim 2, wherein: the voltage stabilizing and reducing module comprises a voltage stabilizing circuit and a voltage reducing circuit; the voltage stabilizing circuit stabilizes the input voltage, provides higher voltage and provides a direct current power supply for an excitation source of the primary side energy transmission module; the voltage reduction circuit is used for reducing the voltage of the voltage stabilized and supplying power to the MCU micro control unit and the wireless communication module.
4. The underwater magnetic coupling resonant wireless charging and communication cable joint as recited in claim 2, wherein: the primary side energy transmission module comprises an inverter circuit and a switch circuit; the inverter circuit provides a high-frequency excitation source for the transmitting end coil; the switch circuit is used for controlling the on-off of the power transmission path between the transmitting end and the receiving end.
5. The underwater magnetic coupling resonant wireless charging and communication cable joint as recited in claim 4, wherein: and the MCU micro control unit controls the on-off of the switch circuit.
6. The underwater magnetic coupling resonant wireless charging and communication cable joint as recited in claim 1, wherein: the receiving end controller comprises an energy receiving module, a voltage detection circuit, an MCU (micro control unit) and a wireless communication module;
the energy receiving module is used for rectifying and stabilizing the energy received by the receiving end coil and outputting the energy to an external rechargeable battery pack connected with a 4-core cable;
the voltage detection circuit is used for detecting the voltage condition of an external rechargeable battery pack and stabilizing the voltage of the battery pack to supply power to the MCU and the wireless communication module.
7. The underwater magnetic coupling resonant wireless charging and communication cable joint as recited in claim 4 or 6, wherein: and the primary side energy transmission module and the energy receiving module are respectively provided with a compensation circuit for compensating electric energy transmission loss caused by leakage inductance.
8. An underwater magnetic coupling resonant wireless charging and communication cable joint according to any one of claims 2 to 6, characterized in that: the wireless communication module is selected from a ZigBee module or a Bluetooth module and is connected with the signal reading and writing end of the MCU.
9. An underwater magnetic coupling resonant wireless charging and communication cable joint according to any one of claims 1 to 6, characterized in that: the transmitting end coil and the receiving end coil are concentric circles formed by winding copper wires with insulated and covered surface layers.
10. The underwater magnetic coupling resonant wireless charging and communication cable joint as recited in claim 9, wherein: in the power supply state, the circle centers of the transmitting end coil and the receiving end coil are overlapped and tightly attached; the total thickness of the non-metallic insulating material between the coils is about 6-8 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010264959.1A CN111446779A (en) | 2020-04-07 | 2020-04-07 | Underwater magnetic coupling resonant wireless charging and communication cable joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010264959.1A CN111446779A (en) | 2020-04-07 | 2020-04-07 | Underwater magnetic coupling resonant wireless charging and communication cable joint |
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| Publication Number | Publication Date |
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| CN111446779A true CN111446779A (en) | 2020-07-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010264959.1A Pending CN111446779A (en) | 2020-04-07 | 2020-04-07 | Underwater magnetic coupling resonant wireless charging and communication cable joint |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114256991A (en) * | 2021-12-28 | 2022-03-29 | 杭州电子科技大学 | Underwater one-to-many pin-free magnetic coupling connector |
| CN115296076A (en) * | 2022-08-16 | 2022-11-04 | 燕山大学 | Wireless power supply and communication plug for seabed sensing network |
-
2020
- 2020-04-07 CN CN202010264959.1A patent/CN111446779A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114256991A (en) * | 2021-12-28 | 2022-03-29 | 杭州电子科技大学 | Underwater one-to-many pin-free magnetic coupling connector |
| CN114256991B (en) * | 2021-12-28 | 2024-01-02 | 杭州电子科技大学 | Underwater one-to-many pin-free magnetic coupling connector |
| CN115296076A (en) * | 2022-08-16 | 2022-11-04 | 燕山大学 | Wireless power supply and communication plug for seabed sensing network |
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