CN114221423B - Thermoelectric energy collection system for ocean optical fiber sensing network - Google Patents
Thermoelectric energy collection system for ocean optical fiber sensing network Download PDFInfo
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- CN114221423B CN114221423B CN202111525990.7A CN202111525990A CN114221423B CN 114221423 B CN114221423 B CN 114221423B CN 202111525990 A CN202111525990 A CN 202111525990A CN 114221423 B CN114221423 B CN 114221423B
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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
- H02J7/32—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from a charging set comprising a non-electric prime mover rotating at constant speed
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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
- H02J7/345—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering using capacitors as storage or buffering devices
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02N—ELECTRIC MACHINES NOT OTHERWISE PROVIDED FOR
- H02N11/00—Generators or motors not provided for elsewhere; Alleged perpetua mobilia obtained by electric or magnetic means
- H02N11/002—Generators
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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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/30—Energy from the sea, e.g. using wave energy or salinity gradient
Abstract
The invention provides a thermoelectric energy collection system for an ocean optical fiber sensing network, which is characterized in that a TEG thermoelectric module is arranged in a chassis or a component with large temperature difference of the device, so that the temperature difference between the inside and the outside of the device is converted into a power supply through the TEG thermoelectric module, and the power supply is supplied to related components after the high-efficiency energy collection circuit and the voltage boosting and reducing module are converted into the power supply suitable for the optical fiber wireless sensing network, thereby realizing the functions of collecting and utilizing the heat energy emitted by the optical fiber wireless sensing network during working and improving the cruising ability of equipment. The invention is applied to the field of ocean optical fiber sensing detection, effectively improves the endurance of the instrument, improves the energy utilization efficiency, and effectively solves the problem of observation interruption caused by frequent battery replacement. The invention supplements power supply by utilizing the huge temperature difference between the inside and the outside of the submarine seismograph, effectively utilizes the huge temperature difference between the inside and the outside of the device, improves the endurance of the device, and is particularly suitable for being used under submarine conditions.
Description
Technical Field
The invention belongs to the technical field of thermoelectric energy collection, and particularly relates to a thermoelectric energy collection system for a marine optical fiber sensing network.
Background
In recent years, research on problems such as development of ocean resources, ocean environment detection and the like is also being intensified in countries around the world. In researches in the years, the introduction of the optical fiber sensing technology successfully solves the problems of service life of a sensor, interference of environmental noise and the like during submarine seismic exploration, but the limited capacity of a battery is still an important factor influencing the service life of a submarine seismic exploration node instrument.
The energy collection technology can utilize energy generated in the environment, and the endurance capacity of the optical fiber sensing network can be improved when the optical fiber sensing network is used for detecting submarine earthquakes. In the submarine seismograph based on the optical fiber sensing network, a large amount of heat can be generated by the self-laser, the whole device is in a low-temperature deep sea environment, the heat can be effectively utilized due to the large temperature difference between equipment and the environment, the heat energy is converted into electric energy to supply power for the seismograph, and the detection time of the equipment can be greatly prolonged. Although many wireless sensing systems with heat energy collecting devices are proposed and even applied to practical engineering, almost all of the wireless sensing systems are electric sensing networks, and have the problem that the wireless sensing networks cannot be stably and reliably detected in severe environments, and little research on the energy collecting problem of the wireless sensing networks is performed, particularly in severe deep sea environments. Therefore, a thermal power acquisition technology capable of acquiring and utilizing energy in an optical fiber wireless sensor network is urgently needed in the field of marine environment detection equipment.
Disclosure of Invention
The invention aims to solve the technical problems that: the thermoelectric energy collection system is used for collecting and utilizing heat energy emitted by the optical fiber wireless sensing network during operation and improving the cruising ability of equipment.
The technical scheme adopted by the invention for solving the technical problems is as follows: a thermoelectric energy collection system for a marine optical fiber sensing network comprises a TEG thermoelectric module, a boost storage module and a voltage stabilizing output module; the TEG thermoelectric module is arranged in the submarine seismograph and is used for collecting thermoelectric energy; the energy output end of the TEG thermoelectric module is connected with the power input end of the boost storage module and is used for transmitting the acquired thermoelectric energy to the boost storage module; the TEG thermoelectric module comprises an N-type doped semiconductor chip, a P-type doped semiconductor chip, a metal sheet, a first heat-conducting ceramic plate and a second heat-conducting ceramic plate; the surfaces of the first heat-conducting ceramic plate and the second heat-conducting ceramic plate are respectively metallized, an N-type doped semiconductor chip, a metal sheet and a P-type doped semiconductor chip are sequentially clamped between the first heat-conducting ceramic plate and the second heat-conducting ceramic plate, the N-type doped semiconductor chip and the P-type doped semiconductor chip are connected in series through the metal sheet, and the outer sides of the first heat-conducting ceramic plate and the second heat-conducting ceramic plate are respectively led out through leads to output electric energy; the power supply output end of the boost storage module is connected with the power supply input end of the voltage stabilizing output module, and the boost storage module is used for boosting, storing and transmitting the ultra-low voltage and low power electric energy to the voltage stabilizing output module; the power output end of the voltage stabilizing output module is connected with the power input end of the equipment to be charged, and the voltage stabilizing output module is used for stably transmitting electric energy to the equipment to be charged.
According to the scheme, the semiconductor material adopted by the N-type doped semiconductor chip and the P-type doped semiconductor chip is bismuth telluride Bi2Te3.
According to the scheme, the metal sheet is a copper sheet.
According to the above scheme, the boost storage module includes an energy harvesting chip, a first capacitor C1, a second capacitor CSC, a third capacitor CHVR, a fourth capacitor CREF, a fifth capacitor CBYP, a sixth capacitor csor, a first inductor LBST, a first resistor ROK1, a second resistor ROK2, a third resistor ROK3, a fourth resistor ROC1, a fifth resistor ROC2, a sixth resistor ROV1, a seventh resistor ROV2, an eighth resistor RUV1, and a ninth resistor RUV2; the VSTOR pin of the energy acquisition chip is grounded through a fifth capacitor CBYP connected in series, and a sixth capacitor CSTOR is connected in parallel to two ends of the fifth capacitor CBYP; one end of the first inductor LBST is connected with an LBST pin of the energy acquisition chip, the other end of the first inductor LBST is respectively connected with an energy output end of the TEG thermoelectric module and one end of the third capacitor CHVR, and the other end of the third capacitor CHVR is grounded; the fifth resistor ROC2 is connected in parallel between the VIN-DC pin and the VOC-SAMP pin of the energy acquisition chip, and the VIN-DC pin of the energy acquisition chip is connected with the energy output end of the TEG thermoelectric module; one end of the fourth resistor ROC1 is connected with the VOC-SAMP pin of the energy acquisition chip, and the other end of the fourth resistor ROC1 is grounded; one end of the fourth capacitor CREF is connected with the VREF-SAMP pin of the energy acquisition chip, and the other end of the fourth capacitor CREF is grounded; the VSS pin of the energy acquisition chip is grounded; the seventh resistor ROV2 is connected in parallel between the VBAT-OV pin and the VRDIV pin of the energy acquisition chip; one end of the sixth resistor ROV1 is connected with a VBAT-OV pin of the energy acquisition chip, and the other end of the sixth resistor ROV is grounded; the ninth resistor RUV2 is connected in parallel between a VBAT-UV pin and a VRDIV pin of the energy acquisition chip; one end of the eighth resistor RUV1 is connected with a VBAT-UV pin of the energy acquisition chip, and the other end of the eighth resistor RUV1 is grounded; the first resistor ROK1 is connected in parallel between an AVSS pin and an OK-PROG pin of the energy acquisition chip, and the AVSS pin and the VSS pin of the energy acquisition chip are respectively grounded; the second resistor ROK2 is connected in parallel between an OK-HYST pin and an OK-PROG pin of the energy acquisition chip; the third resistor ROK3 is connected in parallel between a VRDIV pin and an OK-HYST pin of the energy acquisition chip; one end of the first capacitor C1 is connected with a YBA pin of the energy acquisition chip, and the other end of the first capacitor C is grounded; the positive pole of second electric capacity CSC is connected with the YBA pin of energy acquisition chip, and the negative pole is ground connection.
According to the scheme, the boosting storage module comprises an energy acquisition chip and a storage element; the starting voltage of the energy acquisition chip is lower than 300mV, and the energy acquisition chip is used for continuously collecting a low-voltage input power supply with the voltage greater than or equal to 130 mV; the storage element adopts a super capacitor.
According to the scheme, the voltage stabilizing output module comprises a voltage stabilizing chip, a second inductor L1 and a seventh capacitor C2; the VIN pin of the voltage stabilizing chip is respectively connected with the EN pin of the voltage stabilizing chip and the YBA pin of the energy collecting chip; the FB pin of the voltage stabilizing chip is respectively connected with the VOUT pin of the voltage stabilizing chip and the power input end of the equipment to be charged; one end of the seventh capacitor C2 is connected with the VOUT pin of the voltage stabilizing chip, and the other end of the seventh capacitor C2 is grounded; the second inductor L1 is connected in parallel between an EN pin and an L pin of the voltage stabilizing chip; the GND pin of the voltage stabilizing chip is grounded.
Further, the voltage stabilizing chip is used for inputting voltage of 0.7V-5.5V and stably outputting voltage of 3.0V-3.5V.
According to the scheme, the equipment to be charged comprises a rechargeable battery module, a demodulator and a controller.
The beneficial effects of the invention are as follows:
1. according to the thermoelectric energy collection system for the marine optical fiber sensing network, the TEG thermoelectric module is arranged in the chassis or the component with large temperature difference, so that the temperature difference between the inside and the outside of the device is converted into the power supply through the TEG thermoelectric module, and the power supply is supplied to the relevant component after the high-efficiency energy collection circuit and the voltage boosting and reducing module are converted into the power supply suitable for the optical fiber wireless sensing network, so that the functions of collecting and utilizing the heat energy emitted by the optical fiber wireless sensing network during working and improving the cruising ability of equipment are realized.
2. The invention is applied to the field of ocean optical fiber sensing detection, effectively improves the endurance of the instrument, improves the energy utilization efficiency, and effectively solves the problem of observation interruption caused by frequent battery replacement.
3. The invention supplements power supply by utilizing the huge temperature difference between the inside and the outside of the submarine seismograph, effectively utilizes the huge temperature difference between the inside and the outside of the device, improves the endurance of the device, and is particularly suitable for being used under submarine conditions.
Drawings
Fig. 1 is a functional block diagram of an embodiment of the present invention.
Fig. 2 is a circuit diagram of an embodiment of the present invention.
Detailed Description
The invention will be described in further detail with reference to the drawings and the detailed description.
Referring to fig. 1, an embodiment of the present invention includes a TEG thermoelectric module that performs thermoelectric energy harvesting, and a boost storage module that utilizes ultra-low voltage, low power electrical energy, and a regulated output module that stably outputs the electrical energy. The TEG thermoelectric module is arranged in the submarine seismograph with higher temperature and larger temperature difference; the TEG thermoelectric module is connected with the power input end of the boost storage module, the power output end of the boost storage module is connected with the power input end of the voltage stabilizing output module, and the power output end of the voltage stabilizing output module is connected with the equipment to be charged. The device to be charged comprises a rechargeable battery module, a demodulator and a controller.
The TEG thermoelectric module adopts a thermoelectric material based on bismuth telluride, and consists of a thermoelectric material, a copper sheet, a metallized ceramic sheet and a lead. The TEG thermoelectric module is composed of an N-type doped semiconductor chip and a P-type doped semiconductor chip electrically connected in series and sandwiched between two heat conductive ceramic plates, and the semiconductor material of the TEG thermoelectric module 1 used in this example is Bi2Te3.
The boost storage module includes an energy harvesting chip, a capacitor C1, a capacitor CSC, a capacitor CHVR, a capacitor CREF, a capacitor CBYP, a capacitor CSTOR, an inductor LBST, a resistor ROK1, a resistor ROK2, a resistor ROK3, a resistor ROC1, a resistor ROC2, a resistor ROV1, a resistor ROV2, a resistor RUV1, and a resistor RUV2. The VSTOR pin of the electric energy acquisition chip is connected with the two capacitors CBYP and CSTOR which are connected in parallel and then connected with the grounding end; the LBST pin of the electric energy acquisition chip is electrically connected with the voltage output port of the thermoelectric module TEG after being connected with the inductance LBST, and the voltage output port of the thermoelectric module TEG is connected with the capacitor CHVR and then connected with the grounding end; the VIN-DC pin and the VOC-SAMP pin of the electric energy acquisition chip are connected with the thermoelectric module TEG after being connected with the two ends of the resistor ROC 2; the resistor ROC1 is connected with the resistor ROC2 in series and then is connected with the grounding end; the VREF-SAMP pin of the electric energy acquisition chip is connected with the capacitor CREF and then grounded; the VSS pin of the electric energy acquisition chip is grounded; the VBAT-OV pin and the VRDIV pin of the electric energy acquisition chip are connected to the two ends of the resistor ROV 2; the resistor ROV2 is connected with the resistor ROV1 in series and then connected with the ground terminal; VBAT-UV and VRDIV pins of the electric energy acquisition chip are connected to two ends of the resistor RUV2; the resistor RUV2 is connected with the resistor RUV1 in series and then connected with the grounding end; the AVSS pin and the OK-PROG pin of the electric energy acquisition chip are connected to two ends of the resistor ROK 1; the OK-HYST pin and the OK-PROG pin of the electric energy acquisition chip are connected to two ends of the resistor ROK 2; the VRDIV pin and the OK-HYST pin of the electric energy acquisition chip are connected to the two ends of the resistor ROK 3; the resistor ROK1, the resistor ROK2 and the resistor ROK3 are connected in series and then connected with the grounding end; the AVSS pin of the electric energy acquisition chip is connected with the grounding end; the YBA pin of the electric energy acquisition chip is connected with the capacitor CSC and the capacitor C1.
The boost storage module adopts an electric energy acquisition chip, and is started through voltage as low as 300mV, and continuous energy collection is carried out on a low-voltage input source as low as 130 mV. The storage element adopts a super capacitor.
The voltage stabilizing output module comprises a voltage stabilizing chip, an inductor L1 and a capacitor C2. The VIN pin of the voltage stabilizing chip is connected with the capacitor C1 and the output end of the boosting storage module; the FB pin of the voltage stabilizing chip is connected with the VOUT pin, connected with the capacitor C2 and then connected with the grounding end, and simultaneously connected with the external equipment WSN; and an EN pin of the voltage stabilizing chip is connected with the L pin after being connected with the inductor L1 and is connected with the output end of the boosting storage module.
The voltage stabilizing output module is connected with a battery device of the submarine seismograph.
The voltage stabilizing output module adopts a voltage stabilizing chip to stabilize the voltage of 0.7V-5.5V to 3.0V-3.5V for output, thereby meeting the power supply requirement of the optical fiber wireless sensor network module.
The above embodiments are merely for illustrating the design concept and features of the present invention, and are intended to enable those skilled in the art to understand the content of the present invention and implement the same, the scope of the present invention is not limited to the above embodiments. Therefore, all equivalent changes or modifications according to the principles and design ideas of the present invention are within the scope of the present invention.
Claims (6)
1. A thermoelectric energy collection system for ocean optical fiber sensing network, its characterized in that: the system comprises a TEG thermoelectric module, a boost storage module and a voltage stabilizing output module;
the TEG thermoelectric module is arranged in the submarine seismograph and is used for collecting thermoelectric energy; the energy output end of the TEG thermoelectric module is connected with the power input end of the boost storage module and is used for transmitting the acquired thermoelectric energy to the boost storage module;
the TEG thermoelectric module comprises an N-type doped semiconductor chip, a P-type doped semiconductor chip, a metal sheet, a first heat-conducting ceramic plate and a second heat-conducting ceramic plate; the surfaces of the first heat-conducting ceramic plate and the second heat-conducting ceramic plate are respectively metallized, an N-type doped semiconductor chip, a metal sheet and a P-type doped semiconductor chip are sequentially clamped between the first heat-conducting ceramic plate and the second heat-conducting ceramic plate, the N-type doped semiconductor chip and the P-type doped semiconductor chip are connected in series through the metal sheet, and the outer sides of the first heat-conducting ceramic plate and the second heat-conducting ceramic plate are respectively led out through leads to output electric energy;
the power supply output end of the boost storage module is connected with the power supply input end of the voltage stabilizing output module, and the boost storage module is used for boosting, storing and transmitting the electric energy to the voltage stabilizing output module;
the boost storage module comprises an energy collection chip, a first capacitor C1, a second capacitor CSC, a third capacitor CHVR, a fourth capacitor CREF, a fifth capacitor CBYP, a sixth capacitor CSTOR, a first inductor LBST, a first resistor ROK1, a second resistor ROK2, a third resistor ROK3, a fourth resistor ROC1, a fifth resistor ROC2, a sixth resistor ROV1, a seventh resistor ROV2, an eighth resistor RUV1 and a ninth resistor RUV2;
the VSTOR pin of the energy acquisition chip is grounded through a fifth capacitor CBYP connected in series, and a sixth capacitor CSTOR is connected in parallel to two ends of the fifth capacitor CBYP;
one end of the first inductor LBST is connected with an LBST pin of the energy acquisition chip, the other end of the first inductor LBST is respectively connected with an energy output end of the TEG thermoelectric module and one end of the third capacitor CHVR, and the other end of the third capacitor CHVR is grounded;
the fifth resistor ROC2 is connected in parallel between the VIN-DC pin and the VOC-SAMP pin of the energy acquisition chip, and the VIN-DC pin of the energy acquisition chip is connected with the energy output end of the TEG thermoelectric module;
one end of the fourth resistor ROC1 is connected with the VOC-SAMP pin of the energy acquisition chip, and the other end of the fourth resistor ROC1 is grounded;
one end of the fourth capacitor CREF is connected with the VREF-SAMP pin of the energy acquisition chip, and the other end of the fourth capacitor CREF is grounded;
the VSS pin of the energy acquisition chip is grounded;
the seventh resistor ROV2 is connected in parallel between the VBAT-OV pin and the VRDIV pin of the energy acquisition chip;
one end of the sixth resistor ROV1 is connected with a VBAT-OV pin of the energy acquisition chip, and the other end of the sixth resistor ROV is grounded;
the ninth resistor RUV2 is connected in parallel between a VBAT-UV pin and a VRDIV pin of the energy acquisition chip;
one end of the eighth resistor RUV1 is connected with a VBAT-UV pin of the energy acquisition chip, and the other end of the eighth resistor RUV1 is grounded;
the first resistor ROK1 is connected in parallel between an AVSS pin and an OK-PROG pin of the energy acquisition chip, and the AVSS pin and the VSS pin of the energy acquisition chip are respectively grounded;
the second resistor ROK2 is connected in parallel between an OK-HYST pin and an OK-PROG pin of the energy acquisition chip;
the third resistor ROK3 is connected in parallel between a VRDIV pin and an OK-HYST pin of the energy acquisition chip;
one end of the first capacitor C1 is connected with a YBA pin of the energy acquisition chip, and the other end of the first capacitor C is grounded;
the anode of the second capacitor CSC is connected with the YBAT pin of the energy acquisition chip, and the cathode is grounded;
the power supply output end of the voltage stabilizing output module is connected with the power supply input end of the equipment to be charged, and the voltage stabilizing output module is used for stably transmitting electric energy to the equipment to be charged;
the voltage stabilizing output module comprises a voltage stabilizing chip, a second inductor L1 and a seventh capacitor C2;
the VIN pin of the voltage stabilizing chip is respectively connected with the EN pin of the voltage stabilizing chip and the YBA pin of the energy collecting chip;
the FB pin of the voltage stabilizing chip is respectively connected with the VOUT pin of the voltage stabilizing chip and the power input end of the equipment to be charged;
one end of the seventh capacitor C2 is connected with the VOUT pin of the voltage stabilizing chip, and the other end of the seventh capacitor C2 is grounded;
the second inductor L1 is connected in parallel between an EN pin and an L pin of the voltage stabilizing chip;
the GND pin of the voltage stabilizing chip is grounded.
2. A thermoelectric energy harvesting system for a marine fiber optic sensing network as set forth in claim 1, wherein: the semiconductor material adopted by the N-type doped semiconductor chip and the P-type doped semiconductor chip is bismuth telluride Bi2Te3.
3. A thermoelectric energy harvesting system for a marine fiber optic sensing network as set forth in claim 1, wherein: the metal sheet is a copper sheet.
4. A thermoelectric energy harvesting system for a marine fiber optic sensing network as set forth in claim 1, wherein: the boost storage module comprises an energy acquisition chip and a storage element; the starting voltage of the energy acquisition chip is lower than 300mV, and the energy acquisition chip is used for continuously collecting a low-voltage input power supply with the voltage greater than or equal to 130 mV; the storage element adopts a super capacitor.
5. A thermoelectric energy harvesting system for a marine fiber optic sensing network as set forth in claim 1, wherein: the voltage stabilizing chip is used for inputting 0.7V-5.5V and stably outputting 3.0V-3.5V.
6. A thermoelectric energy harvesting system for a marine fiber optic sensing network as set forth in claim 1, wherein: the equipment to be charged comprises a rechargeable battery module, a demodulator and a controller.
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| US11349482B2 (en) * | 2019-04-05 | 2022-05-31 | Oregon State University | Integrated circuit for low-voltage thermoelectric energy harvesting with self-start |
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| CN103596293A (en) * | 2013-10-28 | 2014-02-19 | 天津大学 | Wireless sensor node stable power supply system based on minitype thermoelectric generator |
| WO2015164903A1 (en) * | 2014-04-30 | 2015-11-05 | Salevo Pty Ltd | A means for harvesting energy from heat |
| CN204461635U (en) * | 2015-03-11 | 2015-07-08 | 河南师范大学 | Based on solar powered high voltage bus wireless temperature monitoring device |
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