CN103697938A - Wireless sensor node capable of collecting reinforcement corrosion energy - Google Patents
Wireless sensor node capable of collecting reinforcement corrosion energy Download PDFInfo
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- CN103697938A CN103697938A CN201310667487.4A CN201310667487A CN103697938A CN 103697938 A CN103697938 A CN 103697938A CN 201310667487 A CN201310667487 A CN 201310667487A CN 103697938 A CN103697938 A CN 103697938A
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Abstract
The invention provides a wireless sensor node capable of collecting reinforcement corrosion energy. The wireless sensor node comprises a reinforcement corrosion energy source, an ultralow-power voltage booster, a super capacitor and a wireless sensor node body, wherein a Q235 carbon steel plate and a graphite plate form a counter electrode of the reinforcement corrosion energy source; a simulated corroded concrete solution is added between the Q235 carbon steel plate and the graphite plate; the reinforcement corrosion energy source is connected with the ultralow-power voltage booster which is connected with the super capacitor; the super capacitor is connected with the wireless sensor node body; battery energy is stored in the super capacitor through an ultralow-power voltage boosted circuit, and the wireless sensor node body starts acquiring and transmitting various environmental parameters after the voltage of the super capacitor reaches the working voltage of the wireless sensor node body. According to the wireless sensor node, the weak corrosion current is fully used for supplying energy to the wireless sensor node, so that energy sources capable of supporting and monitoring the Internet of Things to serve for a long time are provided for structure monitoring and control systems, particularly for major infrastructures serving to support the lifelines of the national economy in severe corrosion environments for a long time.
Description
Technical field
What the present invention relates to is a kind of wireless sensor node of collecting reinforcement corrosion energy.
Background technology
Steel and concrete structure is now and one of the primary structure pattern that will adopt in later considerable time, and reinforcement corrosion is the main reason that causes that steel and concrete structure permanance reduces.American National material board of consultants investigates and shows, heavy corrosion phenomenon appears in nearly 253000 concrete slabs; Japan approximately has 21.4% steel and concrete structure to damage to be caused by reinforcement corrosion; Only Dangerous highway bridge will just reach 9597 in the end of the year 2002 of China, and the bus station, Shandong of 4,000 ten thousand yuan of costs, especially 2009 after building up 5 years high tower, wherein reinforcement corrosion is the one of the main reasons that causes structure military service major cycle.In the recent period, China again drops into number and has developed infrastructure construction in trillion fund, occupies the endurance issues of the steel and concrete structure of significant proportion, certainly will become and affect the national economic development and the stable strategic problem of social harmony.The harm of reinforcement corrosion is big unexpected, and along with the deterioration of global climate and environment, this problem certainly will present the situation of increasingly sharpening, and steel and concrete structure corrosion of reinforcing steel bar is just causing whole world extensive concern.
Along with steel and concrete structure corrosion of reinforcing steel bar causes global extensive concern, both at home and abroad for the material under coupling corrosive attack, member to the performance of structure carried out in a large number, systematic research, the database of preciousness between etch state and material, member and structural behaviour has been set up in these researchs.Once monitoring corrosion of steel system successfully builds, to between structure erosion state and structure military service performance, set up " bridge ", grasp in real time the permanance state of structure, and finally for the evaluation of structure military service security, the proposition that rationalizes corrosion control measure and maintenance and reinforcement scheme and life-cycle design etc. provide scientific basis.Carrying out of steel and concrete structure monitoring corrosion of steel systematic study work is imperative, and this work has significant economic benefit and potential, important social benefit.
On-line monitoring and control are in real time the research frontiers of the health monitoring of civil engineering work mechanism and control.Obviously, wireless senser and network thereof determine that in all many-sided huge advantage it is just playing the effect of critical support platform in monitoring integral system.Conventionally, the Power supply of wireless senser and network derives from the traditional approachs such as battery, electrical network.In fact, the wireless senser and the network overwhelming majority thereof that in present stage, are widely used in field of civil engineering adopt above-mentioned energy resource supply mode.The difficult situation that this has just caused wireless senser and network " signal transmission is wireless, and energy resource supply is wired " thereof, has a greatly reduced quality the huge advantage that should possess of wireless senser and network.This is mainly due to the important difference of field of civil engineering and space flight, military field demand, the design Years Of Service of civil engineering structure can be from supreme a century decades, this just requires effective Years Of Service of wireless supervisory control system can not be lower than the Years Of Service of structure, and obviously radio node can only frequently be changed battery or access electrical network with the energy resource supply of network at present.
With regard to structure control system, if the structure that wireless sensor node can be monitored from it itself is extracted energy for supplying with self, will greatly promote its service life and military service performance so.In fact, in recent years based on being fabricated from energy collecting sensor node such as wind energy, sun power, energy of vibration and the energy of flow etc. are wireless.With regard to steel and concrete structure corrosion monitoring and control, corrosion is serial electrochemical reaction process in essence, and this process is the slow dispose procedure of energy.The coal energy that the energy source discharging consumes in steel smelting procedure.Obviously, in steel smelting procedure, the disordered state of Fe from iron ore is converted into the crystalline state in iron and steel, and the heat energy of the generations such as coal is for realizing this from the process of disorder to order.The corrosion process of iron and steel is exactly from order to unordered process, and the crystalline network of Fe is broken, and the mode of the faint electric energy that energy produces with corrosion is released in occurring in nature gradually.This is undoubtedly for the Power supply of the wireless senser for great steel and concrete structure corrosion monitoring and network thereof provides very bright opportunity.
Summary of the invention
The object of the present invention is to provide a kind of wireless sensor node of collecting reinforcement corrosion energy, this wireless sensor node adopts the faint electric energy producing in steel and concrete structure reinforcement corrosion process to supply with.
The object of the present invention is achieved like this: a kind of wireless sensor node of collecting reinforcement corrosion energy, comprise reinforcement corrosion energy source, ultra low power stepup transformer, ultracapacitor and wireless sensor node, described reinforcement corrosion energy source adopts Q235 carbon steel steel plate and graphite cake structure paired electrode, add the concrete solution after simulation is etched between the two, reinforcement corrosion energy source connects ultra low power stepup transformer, ultra low power stepup transformer connects ultracapacitor, ultracapacitor connects wireless sensor node, by ultra low power booster circuit, battery can be stored in ultracapacitor, and then at ultracapacitor voltage, reach after the operating voltage of radio node, radio node starts various environmental parameters gather and transmit.
The present invention also has following technical characterictic:
1. the reinforcement corrosion energy source described in also comprises the bar-mat reinforcement of actual steel and concrete structure itself.
2. the Q235 carbon steel steel plate described in or employing corrosion susceptibility material, comprise that Mg, Zn, Al or the powder based on the prepared alloy of this three or sheet material are as the source of power generation.
3. the reinforcement corrosion described in can be used as the anode architectures in etching system in electrode bar-mat reinforcement to electrode.
4. the ultra low power stepup transformer described in is Bq25504 booster circuit.
5. the wireless sensor node described in is Telosb node.
Ultimate principle of the present invention is: in xoncrete structure, the corrosion process of reinforcing bar is series electrochemical reaction process slowly, inert material and reinforcing bar are under equal corrosion environment, corrosion potential is between the two different, thereby cause having the generation of electric current between the two, wherein the reinforcing bar of lower corrosion potential is as the supply source of electronics, and the inert material of higher corrosion potential receives the electronics that reinforcing bar produces.In above-mentioned serial reaction process, between the anode and cathode of electrode, produce pressure reduction, thereby can provide the energy for external load.
Beneficial effect of the present invention:
Take full advantage of the faint corrosion current of never being paid close attention to by people, realized the energy resource supply of radio node, thereby be structure monitoring and control system, especially long service great infrastructure under severe erosion environment, that support lifelines of the national economy, provides the energy source that can support monitoring Internet of Things long service.Compared to traditional wind energy, sun power, geothermal energy, energy of vibration equal energy source form, application corrosion can be without increasing too much optional equipment, and as blower fan, solar panels, heat pump, piezoelectric device etc., recoverable corrodes energy.In essence, corrosion can be that a large amount of heat energy that expend in steel smelting procedure are released to natural energy by weak current form.For large-scale basis structure; corrosion can extensively exist; therefore utilize corrosion to provide energy resource supply for monitoring structural health conditions and control system, the key scientific problems such as man-rate, maintenance and reinforcement and the design of the life-cycle based on performance for structure provide solid reliable platform undoubtedly.In addition, the utilization of corrosion energy is green, the industry that faces south, and can make full use of discarded corrosion the crucial energy pattern with superpower on-the-spot applicability can be provided for the Internet of Things of supporting construction safety.
Accompanying drawing explanation
Fig. 1 reinforcement corrosion process power supply capacity figure;
The charging process curve map of Fig. 2 ultracapacitor;
Fig. 3 corrodes the radio node building form figure that can supply with;
Fig. 4 is wireless from the monitoring result exemplary plot of energy collecting node;
Wherein, 1, reinforcement corrosion energy, 2, Bq25504 ultra low power booster circuit, 3, ultracapacitor, 4, Telosb radio node, 5, temperature detection, 6, node voltage.
Specific embodiment
Below in conjunction with accompanying drawing, for example the present invention is described in more detail:
Embodiment 1
A kind of wireless sensor node of collecting reinforcement corrosion energy, comprise reinforcement corrosion energy source, ultra low power stepup transformer, ultracapacitor and wireless sensor node, described reinforcement corrosion energy source adopts Q235 carbon steel steel plate and graphite cake structure paired electrode, add the concrete solution after simulation is etched between the two, reinforcement corrosion energy source 1 connects ultra low power stepup transformer, ultra low power stepup transformer 2 connects ultracapacitor 3, ultracapacitor 3 connects wireless sensor node 4, by ultra low power booster circuit 2, battery can be stored in ultracapacitor to 3, and then reach after the operating voltage of radio node 4 at ultracapacitor 3 voltages, radio node 4 starts various environmental parameters gather and transmit.Described reinforcement corrosion energy source also comprises the bar-mat reinforcement of actual steel and concrete structure itself.Described Q235 carbon steel steel plate or employing corrosion susceptibility material, comprise that Mg, Zn, Al or the powder based on the prepared alloy of this three or sheet material are as the source of power generation.Described reinforcement corrosion can to the anode architectures in etching system in electrode as bar-mat reinforcement to electrode.Described ultra low power stepup transformer is Bq25504 booster circuit.Described wireless sensor node is Telosb node.
The electrode pair of four pairs of Q235/ graphite (5cm * 5cm) is immersed in 0.0087M KH
2pO
4+ 0.00302M Na
2hPO
4in the corrosion concrete simulated solution of+1.0M NaCl.The four pairs of Q235/ graphite electrodes between connect.To the right power supply capacity test result of unitary electrode as shown in Figure 1, electrode potential is between [0.640V ,-0.550V], and electric current magnitude is 10
-6a/cm
2.The electrochemical reaction occurring at corrosion process middle-jiao yang, function of the spleen and stomach, negative electrode is respectively: Fe → Fe
2++ 2e
-and 1/2O
2+ H
2o+2e
-→ 2OH
-.Fig. 2 has provided the process of source of corrosion to ultracapacitor charging, and the voltage of ultracapacitor rose to 2.07V from 0V in 1758 minutes, can start as node provides normal work electric energy, and ultracapacitor charging process is exponential law.
Wirelessly from energy collecting node, comprise altogether source of corrosion, ultra low power stepup transformer Bq25504, ultracapacitor STARCAP and radio node Telosb tetra-parts, the connected mode of each several part as shown in Figure 3.Wherein, the trigger voltage of Bq25504 is 330mV, at it, has completed after start-up course, can be and is not less than the current boost of 100mV and is effectively collected; The rated voltage of STARCAP and capacity are respectively 2.7V and 10F; The trigger voltage of Telosb is 1.8V, in order to prevent node unexpected death, its real work voltage range is adjusted to 2.0V, when voltage is during higher than 2.0V, node collection and transmission data, once voltage is lower than 1.9V, node stop sampling and transmission data, only maintain the function of continuous scanning ultracapacitor voltage, until this voltage is not less than after 2.0V, continue to start the work of next circulation.Fig. 4 is that Telosb passes through the light intensity sensor embedding own, the monitoring result of the STARCAP voltage that environmental light intensity is connected with node, can see that egress successfully adopts corrosion to have realized wireless from energy collecting, and effectively monitor the light intensity variation of node surrounding environment.Can adopt embedded or separated external sensing element perception monitoring objective.
Claims (6)
- One kind collect reinforcement corrosion can wireless sensor node, comprise reinforcement corrosion energy source, ultra low power stepup transformer, ultracapacitor and wireless sensor node, it is characterized in that: described reinforcement corrosion energy source adopts Q235 carbon steel steel plate and graphite cake structure paired electrode, add the concrete solution after simulation is etched between the two, reinforcement corrosion energy source connects ultra low power stepup transformer, ultra low power stepup transformer connects ultracapacitor, ultracapacitor connects wireless sensor node, by ultra low power booster circuit, battery can be stored in ultracapacitor, and then at ultracapacitor voltage, reach after the operating voltage of radio node, radio node starts various environmental parameters gather and transmit.
- 2. a kind of wireless sensor node of collecting reinforcement corrosion energy as claimed in claim 1, is characterized in that: described reinforcement corrosion energy source also comprises the bar-mat reinforcement of actual steel and concrete structure itself.
- As claimed in claim 1 a kind of collect reinforcement corrosion can wireless sensor node, it is characterized in that: described Q235 carbon steel steel plate or employing corrosion susceptibility material, comprise that Mg, Zn, Al or the powder based on the prepared alloy of this three or sheet material are as the source of power generation.
- As claimed in claim 1 or 2 a kind of collect reinforcement corrosion can wireless sensor node, it is characterized in that: described reinforcement corrosion can to the anode architectures in etching system in electrode as bar-mat reinforcement to electrode.
- 5. a kind of wireless sensor node of collecting reinforcement corrosion energy as claimed in claim 1, is characterized in that: described ultra low power stepup transformer is Bq25504 booster circuit.
- 6. a kind of wireless sensor node of collecting reinforcement corrosion energy as claimed in claim 1, is characterized in that: described wireless sensor node is Telosb node.
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-
2013
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|---|---|---|---|---|
| US20120074843A1 (en) * | 2006-03-28 | 2012-03-29 | Wireless Environment, Llc | Lighting Wall Switch with Power Failure Capability |
| CN102548034A (en) * | 2011-12-26 | 2012-07-04 | 哈尔滨工业大学 | Wireless automatic-energy-concentration corrosion monitoring sensor network for heavy and large reinforced concrete structure |
| CN102564937A (en) * | 2011-12-26 | 2012-07-11 | 哈尔滨工业大学 | Energy supply unit of wireless self-energy-accumulating corrosion sensor for steel mixed structure |
| CN103139936A (en) * | 2013-01-18 | 2013-06-05 | 西北农林科技大学 | Energy-self-feeding wireless sensor network node |
| CN203203725U (en) * | 2013-04-23 | 2013-09-18 | 杭州休普电子技术有限公司 | Wireless temperature measurement sensor of electromagnetic energy collection type |
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Application publication date: 20140402 |