CN104009673A - Power supply device for forest environment monitoring sensor - Google Patents
Power supply device for forest environment monitoring sensor Download PDFInfo
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- CN104009673A CN104009673A CN201410257579.XA CN201410257579A CN104009673A CN 104009673 A CN104009673 A CN 104009673A CN 201410257579 A CN201410257579 A CN 201410257579A CN 104009673 A CN104009673 A CN 104009673A
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Abstract
A power supply device for a forest environment monitoring sensor comprises a heat dissipation airflow tube, cooling fins, a thermoelectric power generation piece, an all-glass vacuum solar heat collecting tube, a conducting strip and an electric energy collecting module. The power supply device is reasonable in structure, convenient to install, high in reliability and stable in transmission, the temperatures of the two cold and hot ends of the thermoelectric power generation piece are monitored in real time through a temperature sensor, heat energy generated by temperature difference is converted into electric energy stably through a thermoelectric conversion module, and a power supply support is provided for a wireless sensor network in a forest region.
Description
Technical field
The present invention relates to a kind of forest environment monitoring sensor electric supply installation, be applicable to associated hot electric flux and collect application.The present invention is a kind of forest environment monitoring sensor electric supply installation that forest environment energy conversion is utilized that is particularly useful for.
Background technology
Be laid in forest zone, particularly the powerup issue of the end electronic devices such as wireless sensor network in a forest insoluble scientific and technical difficult problem always; Particularly utilize the research of small heat resource power generation in forest still in blank.Therefore, under complicated forest environment condition, development convenient that install, without the forest environment monitoring sensor electric supply installation of additional power source, by having, extremely have important using value.
Summary of the invention
The forest environment monitoring sensor electric supply installation of the present invention's design is a kind of power conversion gathering-device based on green clean energy resource cycling and reutilization principle.
A forest environment monitoring sensor electric supply installation, comprises radiating airflow pipe, fin, thermo-electric generation sheet, all glass vacuum heat collection tube of solar energy, conducting strip and electricity collection module, wherein:
Radiating airflow pipe is embedded in depth of soils, is U-shaped state; Soil is all directly exposed at radiating airflow pipe two ends, contacts with air; Radiating airflow pipe left end port is a little more than ground; Radiating airflow pipe right-hand member port is a little more than the taper soil heap top of protruding ground, and radiating airflow pipe right-hand member port position is tiltedly to fin;
All glass vacuum heat collection tube of solar energy and ground form and are more than or equal to 30 ° of angle slant settings; All glass vacuum heat collection tube of solar energy one end embeds laminating conducting strip;
Conducting strip and the hot junction laminating of thermo-electric generation sheet left side, the right side cold junction of thermo-electric generation sheet and fin laminating;
When illumination is to all glass vacuum heat collection tube of solar energy, pipe surfaces externally and internally temperature raises, and to conducting strip, conducts heat rapidly; Conducting strip is delivered to thermo-electric generation sheet hot junction by heat, and thermo-electric generation sheet hot-side temperature rises, and heat is transferred to thermo-electric generation sheet cold junction from the hot junction of thermo-electric generation sheet by thermo-electric generation sheet thermocouple arm; Along with thermo-electric generation sheet cold junction accumulation of heat, thermo-electric generation sheet cold junction and heatsink temperature raise;
Because the air themperature flowing out in radiating airflow pipe is far below heatsink temperature, form large temperature difference heat convection current, thermal convection blows to fin, cause thermo-electric generation sheet cold junction temperature to decline, thermo-electric generation sheet two ends effective temperature difference raises, the thermoelectric voltage producing when thermo-electric generation sheet reaches electricity collection module starting resistor, and electricity collection module starts to start;
Electricity collection module is powered to forest environment monitoring sensor, by forest environment monitoring sensor, gather the environmental data information such as air themperature, air humidity, the soil moisture, soil moisture, intensity of illumination and wind speed, process sensor communication network transfers to Computer Data Communication port with the form of digital signal, the final terminal that arrives, carries out data processing.
Wherein radiating airflow pipe, fin and conducting strip material are easy heat sink material, and conducting strip conductive coefficient is higher than heat sink conducts heat coefficient, and radiating airflow pipe thermal transmission coefficient is higher than the thermal transmission coefficient of fin.
Wherein radiating airflow pipe nozzle orientation is erect upwards, guarantees relative with fin locus side direction.
Wherein conducting strip laminating is installed on all glass vacuum heat collection tube of solar energy tube wall, guarantees the good heat transfer of described conducting strip and described all glass vacuum heat collection tube of solar energy.
Wherein the axis direction of fin dimensional orientation in all glass vacuum heat collection tube of solar energy, guarantees and air dielectric good contact.
Wherein said thermo-electric generation sheet material is two kinds of different semi-conductor thermoelectric materials; Thermo-electric generation sheet position is fixed on and all glass vacuum heat collection tube of solar energy axis direction, and by stickum and adjacent conducting strip and fin good fit.
Wherein electricity collection module comprises LTC3108 transducer, LPR6235-752SML step-up transformer and external lithium battery and holding capacitor; Electricity collection module is connected with thermo-electric generation sheet two ends binding post, whole electricity collection module fixed position and connection mode are not limit, guarantee that thermo-electric generation sheet two ends connect LTC3108 transducer, transducer connects LPR6235-752SML transformer, and transformer is external lithium battery and holding capacitor power supply.
This electric supply installation is rational in infrastructure, easy for installation, reliability is high, transmission is stable, by the cold and hot two ends of temperature sensor Real-Time Monitoring thermo-electric generation sheet temperature, thermo-electric conversion module is realized heat energy that the temperature difference produces to the stable conversion of electric energy, is the support of powering of the wireless sensor network in forest zone.
The object of the invention is: the requirement of the powerup issue of the wireless senser using based on solution forest environment, utilize this invention to realize and utilize all glass vacuum heat collection tube of solar energy, air, thin solum to make thermo-electric generation sheet two ends form effective temperature difference, thereby output electric energy, and by power storage in lithium ion battery or electric capacity, for the micro-power devices such as wireless senser provide electric energy.This is laid in forest zone for solution, and particularly the powerup issue of the acquisition of the sensor end electronic device in forest electric energy has and important meaning.
Accompanying drawing explanation
Fig. 1: forest environment monitoring sensor electric supply installation integral installation schematic diagram of the present invention;
Fig. 2: forest environment monitoring sensor electric supply installation thermal-collecting tube of the present invention and thermo-electric generation sheet scheme of installation;
Fig. 3: forest environment monitoring sensor electric supply installation electricity collection modular circuit chip pin connection layout of the present invention;
Reference numeral:
1---radiating airflow pipe
2---fin
3---thermo-electric generation sheet
4---all glass vacuum heat collection tube of solar energy
5---conducting strip
6---electricity collection module
7---ground
8---soil
9---air
10---light
Embodiment
In order to make narration of the present invention more detailed and complete, can be with reference to appended drawings and Examples, in accompanying drawing, identical number represents identical or similar assembly, but the scope that the embodiment providing is not contained in order to limit the present invention.
As shown in Figure 1 and Figure 2, a kind of forest environment monitoring sensor electric supply installation comprises radiating airflow pipe 1, fin 2, thermo-electric generation sheet 3, all glass vacuum heat collection tube of solar energy 4, conducting strip 5, electricity collection module 6; Radiating airflow pipe 1 is embedded in depth of soils, is U-shaped state; Soil is all directly exposed at radiating airflow pipe 1 two ends, contacts with air; Radiating airflow pipe 1 left end port, a little more than ground 7, guarantees that air-flow imports smoothly; Radiating airflow pipe 1 right-hand member port is a little more than the taper soil heap top of protruding ground 7, and radiating airflow pipe 1 right-hand member port position is tiltedly to fin 2.
Wherein radiating airflow pipe, fin and conducting strip material are easy heat sink material, and conducting strip conductive coefficient is higher than heat sink conducts heat coefficient, and radiating airflow pipe thermal transmission coefficient is higher than the thermal transmission coefficient of fin.
As shown in Figure 1 and Figure 2, all glass vacuum heat collection tube of solar energy 4 forms 30 ° of angle slant settings with ground 7; All glass vacuum heat collection tube of solar energy 4 one end embed laminating conducting strip 5; Conducting strip 5 and 3 hot junction, the left side laminatings of thermo-electric generation sheet, the right side cold junction of thermo-electric generation sheet 3 and fin 2 laminatings; When illumination is to all glass vacuum heat collection tube of solar energy 4, pipe surfaces externally and internally temperature raises, and to conducting strip 5, conducts heat rapidly; Conducting strip 5 is delivered to thermo-electric generation sheet 3 hot junctions by heat, and thermo-electric generation sheet 3 hot-side temperatures rise, and heat is transferred to thermo-electric generation sheet 3 cold junctions from the hot junction of thermo-electric generation sheet 3 by thermo-electric generation sheet thermocouple arm; Along with thermo-electric generation sheet 3 cold junction accumulation of heat, thermo-electric generation sheet 3 cold junctions and fin 2 temperature raise; Because the air themperature of radiating airflow pipe 1 interior outflow is far below fin 2 temperature, form large temperature difference heat convection current, thermal convection blows to fin 2, cause thermo-electric generation sheet 3 cold junction temperatures to decline, thermo-electric generation sheet 3 two ends effective temperature differences raise, the thermoelectric voltage producing when thermo-electric generation sheet 3 reaches electricity collection module 6 starting resistors, and electricity collection module 6 starts to start.
Electricity collection module 6 is forest environment monitoring sensor electric supply installation critical components, and as shown in Figure 3, as the DC-DC converter chip of a high integration, LTC3108 is for controlling the Voltage-output of thermoelectric generator; Adopt the LPR6235-752SML transformer that step-up ratio is 1: 100, realize the input voltage start-up circuit with 20mV to 500rmV; Input voltage amplifies by transformer, is LTC3108 chip power supply; LTC3108 chip arranges V by VS1 and VS2
oUToutput voltage regulates and controls; Wherein VS1 pin meets V
aUX, VS2 pin meets GND, when input voltage is 20mV, and V
oUToutput 3.3V; V
oUTand V
oUT2output electric energy, powers to 3.3V wireless senser; V
oUTreach stationary value 93% after, LTC3108 controls electric energy from V
sTOREpin charges to 0.1F holding capacitor; Input voltage is less than 20mV, and the electric energy in holding capacitor is reversed the energy supply of LTC3108 chip, continues to power to wireless senser.
As shown in Figure 3, forest environment monitoring sensor Sensors is the core component of environment information acquisition; As the important component part of forest zone sensor network, forest environment monitoring sensor Sensors is significantly applied to the transmission of forest environment data message.Forest environment monitoring sensor Sensors employing ZigBee, GPRS and 2G, 3G data transfer mode; The environmental data information such as air themperature, air humidity, the soil moisture, soil moisture, intensity of illumination and wind speed that collect by forest environment monitoring sensor Sensors, process ZigBee, GPRS and 2G, 3G sensor communication network, with digital signal form, transfer to Computer Data Communication port, the final terminal that arrives, carries out data analysis processing.
Consider the internal resistance of thermo-electric generation sheet and surrounding environment influence, in practical application, to driving the output effect contrived experiment of electricity collection module, measure: as accompanying drawing 3, TEG thermo-electric generation sheet is connected with electricity collection module, with universal instrument, measure respectively thermo-electric generation sheet output voltage, input current and V
oUTvoltage.When thermo-electric generation sheet two ends, output voltage is 35mV, when input current is 0.12mA, and V
oUToutput 4.32V, can realize to 4.3V wireless senser and charging; When thermo-electric generation sheet two ends output voltage is during lower than 20mV, holding capacitor continues to power to wireless senser.The minimum power output of thermo-electric generation sheet in electricity collection module is about 4.2uW, in this state, can guarantee that electricity collection module normally works.For the wireless sensor network using in forest environment monitoring carries out stable power-supplying.
Wherein radiating airflow pipe 1 material is easy heat sink material, as aluminium, and aluminium copper etc.; Radiating airflow pipe 1 nozzle orientation is erect upwards, guarantees relative with fin locus side direction;
Wherein conducting strip 5 materials are easy Heat Conduction Material, as silver, and copper etc.; Conducting strip 5 laminating is installed on all glass vacuum heat collection tube of solar energy 4 inner tubal walls, guarantees the good heat transfer of itself and all glass vacuum heat collection tube of solar energy 4;
Wherein the axis direction of fin 2 dimensional orientations in all glass vacuum heat collection tube of solar energy 4, guarantees and air dielectric good contact;
Thermo-electric generation sheet 3 materials are two kinds of different semiconductors; Thermo-electric generation sheet 3 positions are fixed on and all glass vacuum heat collection tube of solar energy 4 axis directions, and by stickum and adjacent conducting strip and fin good fit;
All glass vacuum heat collection tube of solar energy 4 must be more than or equal to 30 degree with ground angle; Under above-mentioned angle condition, the energy guarantee that illumination produces on all glass vacuum heat collection tube of solar energy 4 meets thermo-electric generation demand;
Wherein electricity collection module 6 comprises LTC3108 transducer, LPR6235-752SML step-up transformer and external lithium battery and holding capacitor; Electricity collection module 6 is connected with thermo-electric generation sheet 3 two ends binding posts, and whole electricity collection module 6 fixed positions and connection mode are not limit; Guarantee that thermo-electric generation sheet 3 two ends connect LTC3108 transducer, transducer connects LPR6235-752SML transformer, and transformer is external lithium battery and holding capacitor power supply.
[embodiment 1]
Radiating airflow pipe 1 pipe shaft is positioned at soil inside, is U-shaped distribution, and in the soil that pipe shaft least significant end is embedded in, two ends port is exposed in air; Radiating airflow pipe 1 one end port is as low side, a little more than ground 7; Another port is as high-end, a little more than the taper soil heap top of protruding ground 7; High-end port side, to fin 2, guarantees that heat radiation is sufficient.
Complete glass vacuum sun thermal-collecting tube 4 slant settings, pipe shaft and horizontal plane angle are 30 degree; Conducting strip 5 is made U-shaped, the U-shaped mouthful of conducting strip 5 embeds all-glass vacuum solar heat pipe 4 inner tubes and is connected with it with heat conductive silica gel, and conducting strip 5 bottoms use heat conductive silica gel to be connected with the hot junction of thermo-electric generation sheet 3; Thermo-electric generation sheet 3 cold junctions are connected with fin 2 with heat conductive silica gel.Complete glass vacuum sun thermal-collecting tube 4 and thermo-electric generation sheet 3 interfaces adopt aerogel blanket and the sealing of adiabatic heat-insulation glue, reduce thermo-electric generation sheet 3 hot junction heat loss.
Thermo-electric generation sheet 3 is connected with electricity collection module 6, and in electricity collection module 6, temperature sensor shows thermo-electric generation sheet 3 cold and hot two ends Temperature numerical; Electricity collection module 6 is wireless senser charging; The output valve temperature of on time dividing segment record temperature sensor after installation, Real-Time Monitoring, guarantees stability monitoring and the transmission of data message.
[embodiment 2]
As shown in Figure 1, on the ground, thermal-collecting tube 4 low sides are fixed on horizontal plane to complete glass vacuum sun thermal-collecting tube 4 slant settings, the high-end taper soil heap top of protruding ground 7 that is fixed on of thermal-collecting tube 4; The high-end port of radiating airflow pipe 1 is exposed on taper soil heap top, dispels the heat; Under the double-radiation function effect of soil 8 and air 9, forest environment monitoring sensor electric supply installation starts to carry out power conversion and collection work;
Complete glass vacuum sun thermal-collecting tube 4 is tilted to be arranged between ground 7 and soil 8 tops, and thermal-collecting tube 4 low sides are fixed on ground 7, and the high-end taper soil heap top that is fixed on, guarantees that itself and ground 7 angles equal 30 degree; Dependency relation as shown in Figure 1.
Radiating airflow pipe 1 one end port is as low side, a little more than ground 7; Another port is as high-end, a little more than the taper soil heap top of protruding ground 7; High-end port side, to fin 2, guarantees that heat radiation is sufficient.Mounting means is as accompanying drawing 1.
Conducting strip 5 one end are connected with all-glass vacuum solar heat pipe 4 inner tubes with heat conductive silica gel, and the other end is connected with the hot junction of thermo-electric generation sheet 3 with heat conductive silica gel; Fin 2 use heat conductive silica gels are connected with thermo-electric generation sheet 3 cold junctions.
Complete glass vacuum sun thermal-collecting tube 4 and thermo-electric generation sheet 3 interfaces adopt aerogel blanket and the sealing of adiabatic heat-insulation glue; Guarantee that fin 3 centers and the high-end port of radiating airflow pipe 1 center on thermal-collecting tube 4 are in same vertical orientation, suitably adjust complete glass vacuum sun thermal-collecting tube 4 angles of inclination, guarantee that forest environment monitoring sensor electric supply installation can carry out continuous firing when illumination and wind speed are stablized.
The conversion of experimental data and energy and collection: the cold and hot two ends temperature data of realizing thermo-electric generation sheet 3 in real-time displaying device by the temperature sensor in device; By being connected to the electricity collection module harvest energy at thermo-electric generation sheet 3 two ends, and by collected Energy Transfer in holding capacitor, and then charge for the wireless sensor network of forest environment monitoring.
Technique effect
The present invention is by utilizing the different temperatures of complete glass vacuum sun thermal-collecting tube, air, thin solum to make the cold and hot two ends of thermo-electric generation sheet form the large span temperature difference, driving interlock circuit to realize boosts, and final storage and the output electric energy realized, be the wireless sensor network stable power-supplying in forest zone.The monitoring temperature of temperature sensor and interlock circuit boost and the storage of electric energy and output all complete automatically, do not need manual operation, reduced artificial error and workload, reached easy for installation, reliable and stable, safety and environmental protection, without the requirement of external electric energy.Through repetition test, by temperature sensor, successfully show that the real time temperature at the cold and hot two ends of thermo-electric generation sheet changes numerical value, the output voltage of the forest environment monitoring sensor electric supply installation that the smooth demonstration by external universal instrument obtains is 4.3V.Therefore,, by this poor forest environment monitoring sensor electric supply installation, without external power supply in the situation that, the wireless sensor network that is embodied as forest zone carries out stable power-supplying and can guarantee smooth realization.
Claims (7)
1. a forest environment monitoring sensor electric supply installation, comprise radiating airflow pipe (1), fin (2), thermo-electric generation sheet (3), all glass vacuum heat collection tube of solar energy (4), conducting strip (5) and electricity collection module (6), it is characterized in that:
Radiating airflow pipe (1) is embedded in depth of soils, is U-shaped state; Soil is all directly exposed at radiating airflow pipe (1) two ends, contacts with air; Radiating airflow pipe (1) left end port is a little more than ground (7); Radiating airflow pipe (1) right-hand member port is a little more than the taper soil heap top of protruding ground (7), and radiating airflow pipe (1) right-hand member port position is tiltedly to fin (2);
All glass vacuum heat collection tube of solar energy (4) forms and is more than or equal to 30 ° of angle slant settings with ground (7); All glass vacuum heat collection tube of solar energy (4) one end embeds laminating conducting strip (5);
Conducting strip (5) and the laminating of thermo-electric generation sheet (3) hot junction, the cold junction of thermo-electric generation sheet (3) and fin (2) laminating;
When illumination is to all glass vacuum heat collection tube of solar energy (4), pipe surfaces externally and internally temperature raises, and to conducting strip (5), conducts heat rapidly; Conducting strip (5) is delivered to thermo-electric generation sheet (3) hot junction by heat, thermo-electric generation sheet (3) hot-side temperature rises, and heat is transferred to thermo-electric generation sheet (3) cold junction from the hot junction of thermo-electric generation sheet (3) by thermo-electric generation sheet (3) thermocouple arm; Along with thermo-electric generation sheet (3) cold junction accumulation of heat, thermo-electric generation sheet (3) cold junction and fin (2) temperature raise;
Because the air themperature flowing out in radiating airflow pipe (1) is far below fin (2) temperature, form large temperature difference heat convection current, thermal convection blows to fin (2), cause thermo-electric generation sheet (3) cold junction temperature to decline, thermo-electric generation sheet (3) two ends effective temperature difference raises, the thermoelectric voltage producing when thermo-electric generation sheet (3) reaches electricity collection module (6) starting resistor, and electricity collection module (6) starts to start;
Electricity collection module (6) is powered to forest environment monitoring sensor, by forest environment monitoring sensor, gather the environmental data information such as air themperature, air humidity, the soil moisture, soil moisture, intensity of illumination and wind speed, process sensor communication network transfers to Computer Data Communication port with the form of digital signal, the final terminal that arrives, carries out data processing.
2. forest environment monitoring sensor electric supply installation according to claim 1, wherein radiating airflow pipe (1), fin (2) material are easy heat sink material, conducting strip (5) material is easy Heat Conduction Material, conducting strip (5) conductive coefficient is higher than fin (2) conductive coefficient, and radiating airflow pipe (1) thermal transmission coefficient is higher than the thermal transmission coefficient of fin (2).
3. forest environment monitoring sensor electric supply installation according to claim 2, wherein radiating airflow pipe (1) nozzle orientation is erect upwards, guarantees relative with fin (2) locus side direction.
4. forest environment monitoring sensor electric supply installation according to claim 1, wherein conducting strip (5) laminating is installed on all glass vacuum heat collection tube of solar energy (4) tube wall, guarantees the good heat transfer of described conducting strip and described all glass vacuum heat collection tube of solar energy (4).
5. forest environment monitoring sensor electric supply installation according to claim 1, the axis direction of described fin (2) dimensional orientation in all glass vacuum heat collection tube of solar energy (4), guarantees and air dielectric good contact.
6. forest environment monitoring sensor electric supply installation according to claim 1, wherein said thermo-electric generation sheet (3) material is two kinds of different semi-conductor thermoelectric materials; Thermo-electric generation sheet (3) position is fixed on and all glass vacuum heat collection tube of solar energy (4) axis direction, and by stickum and adjacent conducting strip (5) and fin (2) good fit.
7. forest environment monitoring sensor electric supply installation according to claim 1, described electricity collection module (6) comprises LTC3108 transducer, LPR6235-752SML step-up transformer and external lithium battery and holding capacitor; Electricity collection module (6) is connected with thermo-electric generation sheet (3) two ends binding post, whole electricity collection module (6) fixed position and connection mode are not limit, guarantee that thermo-electric generation sheet (3) two ends connect LTC3108 transducer, transducer connects LPR6235-752SML transformer, and transformer is external lithium battery and holding capacitor power supply.
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| CN106441425A (en) * | 2016-08-30 | 2017-02-22 | 孟玲 | Forest environmental monitoring system |
| CN107091963A (en) * | 2017-07-09 | 2017-08-25 | 北京林业大学 | A kind of soil thermo-electric generation experimental provision |
| CN107171427A (en) * | 2017-06-21 | 2017-09-15 | 江南大学 | A kind of thermo-electric generation for soil temperature-moisture sensor and the complementary electric supply installation of battery |
| CN108390592A (en) * | 2018-02-22 | 2018-08-10 | 北京林业大学 | A kind of power generator of with acquiring light energy mix |
| CN108448942A (en) * | 2018-03-08 | 2018-08-24 | 国网黑龙江省电力有限公司电力科学研究院 | A kind of low temperature environment sunshine takes thermal electric generator |
| CN111735497A (en) * | 2020-07-03 | 2020-10-02 | 北京物联芯语科技有限公司 | NB-IoT environmental data monitoring system based on thermoelectric generation |
| CN113670472A (en) * | 2021-07-29 | 2021-11-19 | 云南电网有限责任公司曲靖供电局 | Distributed optical fiber communication method for wireless temperature measurement system of high-voltage transmission line |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106441425A (en) * | 2016-08-30 | 2017-02-22 | 孟玲 | Forest environmental monitoring system |
| CN107171427A (en) * | 2017-06-21 | 2017-09-15 | 江南大学 | A kind of thermo-electric generation for soil temperature-moisture sensor and the complementary electric supply installation of battery |
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| CN108390592A (en) * | 2018-02-22 | 2018-08-10 | 北京林业大学 | A kind of power generator of with acquiring light energy mix |
| CN108448942A (en) * | 2018-03-08 | 2018-08-24 | 国网黑龙江省电力有限公司电力科学研究院 | A kind of low temperature environment sunshine takes thermal electric generator |
| CN111735497A (en) * | 2020-07-03 | 2020-10-02 | 北京物联芯语科技有限公司 | NB-IoT environmental data monitoring system based on thermoelectric generation |
| CN113670472A (en) * | 2021-07-29 | 2021-11-19 | 云南电网有限责任公司曲靖供电局 | Distributed optical fiber communication method for wireless temperature measurement system of high-voltage transmission line |
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| CN104009673B (en) | 2016-03-02 |
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