CN101917031B - Wireless sensor device for monitoring health of civil engineering structure - Google Patents
Wireless sensor device for monitoring health of civil engineering structure Download PDFInfo
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- 238000012544 monitoring process Methods 0.000 title claims abstract description 22
- 230000036541 health Effects 0.000 title claims abstract description 21
- 238000012545 processing Methods 0.000 claims abstract description 18
- 238000004891 communication Methods 0.000 claims abstract description 13
- 239000000463 material Substances 0.000 claims abstract description 9
- 239000000758 substrate Substances 0.000 claims description 21
- 230000007704 transition Effects 0.000 claims description 15
- 230000000087 stabilizing effect Effects 0.000 claims description 12
- 238000007599 discharging Methods 0.000 claims description 10
- 230000005669 field effect Effects 0.000 claims description 10
- 230000003321 amplification Effects 0.000 claims description 8
- 238000003199 nucleic acid amplification method Methods 0.000 claims description 8
- 230000001953 sensory effect Effects 0.000 claims description 8
- 238000006243 chemical reaction Methods 0.000 claims description 7
- 239000003381 stabilizer Substances 0.000 claims description 6
- 229910000906 Bronze Inorganic materials 0.000 claims description 4
- 239000010974 bronze Substances 0.000 claims description 4
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- 230000008901 benefit Effects 0.000 abstract description 6
- 230000003287 optical effect Effects 0.000 abstract 1
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- 230000007246 mechanism Effects 0.000 description 2
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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
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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
- Y02E70/00—Other energy conversion or management systems reducing GHG emissions
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Abstract
The invention discloses a wireless sensor device for monitoring the health of a civil engineering structure, which comprises a sensing assembly and a power supply device which supplies power to the sensing assembly. The wireless sensor device is characterized in that: the sensing assembly comprises a sensor, a filter amplifying circuit, a signal processing circuit and a wireless communication circuit; the power supply device comprises a storage battery, a power interface circuit, a solar photovoltaic cell and a piezoelectric vibrator, wherein the solar photovoltaic cell converts optical energy into electric energy, and the piezoelectric vibrator converts mechanical energy into the electric energy; the power interface circuit comprises a piezoelectric energy supply circuit and a charge and discharge management circuit; the solar photovoltaic cell is connected with the storage battery through the charge and discharge management circuit; the piezoelectric vibrator is connected with the storage battery through the piezoelectric energy supply circuit; and the storage battery is connected with the sensor, the filter amplifying circuit, the signal processing circuit and the wireless communication circuit respectively. The wireless sensor device has the advantages of converting the mechanical energy and solar energy into the electric energy and storing redundant electric energy in the storage battery by collecting the energy in multiple paths due to the adoption of three power supply modes of the storage battery, solar power supply and piezoelectric material power generation.
Description
Technical field
The present invention relates to a kind of monitoring structural health conditions device of civil engineering, especially relate to a kind of wireless sensor device for civil engineering works structure health monitoring.
Background technology
Large scale civil engineering structure and infrastructure, such as dam, large bridge, skyscraper etc., their operating period all reaches decades even upper century-old.In its military service process, because the impact of the human factor of environmental load effect, fatigue effect, corrosion effect and material aging and other improper use, structure will produce the damage accumulation inevitably, thereby cause the drag decay, even cause burst accident, cause huge loss for the people's life and property, even bring extremely bad social influence.For example, since the eighties in 20th century, in the North America, some countries and regions in Europe and Asia, the unexpected fracture collapse accident of some bridge structures has occured in succession.Therefore, above-mentioned large scale structure and facility are carried out monitoring structural health conditions, take effective means to monitor in real time and forecast the performance of structure, in time find and estimate position and the degree of inside configuration damage, the performance change of predict and residual life are also made and are safeguarded decision, to improving the efficiency of operation of engineering structure, assuring the safety for life and property of the people has earth shaking meaning.
In the civil structure health monitoring systems, self parameter of civil structure and the data such as factor parameter that affect civil structure are to rely on various transducers to gather, the signal of sensor senses is through data acquisition system, convert the required data of computer to, then processing through fusion, arrangement, storage, processing etc. are corresponding, final diagnosis goes out the situation of structure.
The wireless sensor network of wireless senser and composition thereof (Wireless Sensor Networks, WSN) technology is also developing by leaps and bounds, and wireless sensor network becomes the emerging technology of three large technology such as combining transducer, embedded calculating and radio communication.Because wireless senser and network itself thereof have advantages of, so that it has obtained application aspect a lot, main application fields has space flight and aviation, military affairs, medical treatment, scientific research, wild monitoring, monitoring structural health conditions, vehicle tracking etc.Wide application prospect has started domestic and international research boom to WSN.Especially in monitoring structural health conditions, compare with the cable data acquisition system, wireless sensor network have need not a large amount of wirings, install convenient, change easily, maintenance cost is low, save the advantages such as cost, owing to being subjected to external environmental interference little, wireless senser also has higher signal to noise ratio and certainty of measurement simultaneously.
In transducer, no matter be sensing unit or processing unit, be a key for they provide the power supply of energy, even determined use service state and the life-span of whole transducer.
In more than ten years in the past, processing, storage and the communication technology have obtained develop rapidly, and the speed of power technology progress is much smaller by comparison, significantly do not improve on the energy density.Transducer and mutual meshed network aspect have obtained very large achievement in research, but because network node increase quantitatively and minimizing dimensionally, volume, life-span and energy density to power supply require more and more stricter, traditional supply power mode can not satisfy the demand for development of sensor network nodes, therefore, new power supply technique research just seems very crucial.New method of supplying power to can adopt following 2 kinds of approach: the one, adopt the long-life power supplys such as nuclear battery; The 2nd, utilize the environmental energy that can regenerate, mainly comprise the energy that microwave, illumination, vibration, heat and air-flow etc. produce.The second approach can provide safety, low-cost and in theory without the self-powered technology of age limit.
Summary of the invention
Technical problem to be solved by this invention provides a kind of wireless sensor device that is used for civil engineering works structure health monitoring convenient, that replacing is easy and useful life is long of installing.
The present invention solves the problems of the technologies described above the technical scheme that adopts: a kind of wireless sensor device for civil engineering works structure health monitoring, comprise sensory package and the supply unit of powering to described sensory package, it is characterized in that described sensory package comprises transducer, filter amplification circuit, signal processing circuit and wireless communication line, described supply unit comprises storage battery, power interface circuit, conversion luminous energy is that solar-energy photo-voltaic cell and the conversion mechanical energy of electric energy is the piezoelectric vibrator of electric energy, described power interface circuit comprises piezoelectricity energy supply circuit and management of charging and discharging circuit, described solar-energy photo-voltaic cell is connected with described storage battery by described management of charging and discharging circuit, described piezoelectric vibrator is connected with described storage battery by described piezoelectricity energy supply circuit, described storage battery respectively with described transducer, described filter amplification circuit, described signal processing circuit be connected wireless communication line and connect.
Described piezoelectric vibrator comprises a mass and at least one piezoelectric element, and described piezoelectric element comprises fixed block and substrate, is provided with piezoelectric patches on the described substrate.
Described substrate width vertically equates, is homalographic beam type piezoelectric oscillator.
Described substrate width vertically is prismatic to be changed, and is equal strength beam type piezoelectric vibrator.
The material of described piezoelectric patches is the PZT piezoelectric ceramic, and the material of described substrate is beryllium-bronze.
Described management of charging and discharging circuit comprises the first fuse, the second fuse, the first resistance, the second resistance, the 3rd resistance, the 4th resistance, the 5th resistance, the first electric capacity, the second electric capacity, the first triode, the first voltage stabilizing didoe, the first light-emitting diode, the first potentiometer and model are the solar recharging control chip of BQ2057, one end ground connection of described solar-energy photo-voltaic cell, the other end of described solar-energy photo-voltaic cell by described the first fuse after the first via be connected with ground through described the first electric capacity, the second the road is connected with the 8th end with the 3rd end of described solar recharging control chip simultaneously, Third Road through behind described the first resistance with the emitter of described the first triode be connected the first end of solar recharging control chip and be connected, the base stage of described the first triode is connected with the 7th end of described solar recharging control chip by described the second resistance, the 6th end ground connection of described solar recharging control chip, the collector electrode of described the first triode is connected with the negative pole of described the first voltage stabilizing didoe, the anodal first via of described the first voltage stabilizing didoe is connected with the positive pole of described storage battery by described the second fuse, the second the tunnel is connected with the second end of described solar recharging control chip, Third Road is by described the second capacity earth, the five terminal of described solar recharging control chip is by described the first light-emitting diode and described the 3rd grounding through resistance, the 4th end first via of described solar recharging control chip is connected to ground by the negative pole of described potentiometer and described storage battery, the second the tunnel by described the 5th grounding through resistance, and described the 4th resistance is connected across between the 8th end and the 4th end of described solar recharging control chip.
Described piezoelectricity energy supply circuit comprises bridge rectifier and the 6th resistance, the 7th resistance, the 8th resistance, the 9th resistance, the tenth resistance, the 11 resistance, the 12 resistance, the 3rd electric capacity, the 4th electric capacity, the 5th electric capacity, the 6th electric capacity, the second triode, the second voltage stabilizing didoe, the first field effect transistor and model are the first integrated circuit (IC) chip of MAX666, the two ends of described piezoelectric vibrator are connected with the 3rd end with the 1st end of described bridge rectifier, the 2nd end of described bridge rectifier respectively with an end of described the 6th resistance, one end of described the 9th resistance, one end of described the 3rd electric capacity, one end of described the 4th electric capacity and the 8th end of described the first integrated circuit (IC) chip connect, the other end of described the 3rd electric capacity respectively with an end of described the 7th resistance, the negative terminal of described the second voltage-stabiliser tube, the 4th end of described bridge rectifier and the source electrode of described field effect transistor connect, the other end of described the 6th resistance is connected with an end of described the 5th electric capacity and the emitter of described the second triode respectively, the other end of described the 7th resistance is connected with the collector electrode of described the second triode and the grid of described the first field effect transistor respectively, the base stage of described the second triode is connected with an end of the 8th resistance and the anode of described the second voltage-stabiliser tube respectively, the other end of described the 5th electric capacity is connected with the 7th end of described the first integrated circuit (IC) chip and an end of described the 12 resistance respectively, the other end of described the 12 resistance respectively with the 1st～2 end of described the first integrated circuit (IC) chip, one end of described the tenth resistance and an end of described the 6th electric capacity are connected to the positive pole of described storage battery, the other end of described the tenth resistance is connected with the 3rd end of described the first integrated circuit (IC) chip and an end of described the 11 resistance respectively, the other end of described the 8th resistance, the other end of described the 9th resistance, the other end of described the 4th electric capacity, the 4th～6 end of described the first integrated circuit (IC) chip, the other end of the other end of described the 11 resistance and described the 6th electric capacity is connected to ground.
Described piezoelectricity energy supply circuit comprises that model is the rectification chip of DF005S, model is the voltage transitions chip of TPS62200, the 13 resistance, the 14 resistance, the 7th electric capacity, the 8th electric capacity, the 9th electric capacity, the tenth electric capacity and inductance coil, the two ends of described piezoelectric vibrator are connected with the input of described rectification chip, an output in two outputs of described rectification chip is connected with EN with the V1 end of described voltage transitions chip and is connected, another output in two outputs of described rectification chip and the GND of described voltage transitions chip end ground connection, described the 7th electric capacity and described the 8th electric capacity are connected across between two outputs of described rectification chip, the SW end of described voltage transitions chip is connected with an end of described inductance coil, the other end of described inductance coil respectively with an end of described the 13 resistance, one end of described the 9th electric capacity and an end of described the tenth electric capacity are connected to the positive pole of described storage battery, the other end of described the 13 resistance respectively with the other end of described the 9th electric capacity, the FB end of described voltage transitions chip and an end of described the 14 resistance connect, and the other end of the other end of described the 14 resistance and described the tenth electric capacity is connected to ground.
Described power interface circuit is provided with secondary battery protection circuit.
Compared with prior art, the invention has the advantages that and adopted storage battery, solar powered and three kinds of supply power modes of piezoelectric material to generate electricity.By the number of ways harvest energy, mechanical energy and solar energy are converted into electric energy, and unnecessary electric energy stored in storage battery, by power interface circuit the current/voltage that produces is carried out rectification and voltage transformation, come the useful life of maximized prolongation wireless sensor node by self-powered method, reduce maintenance workload.The present invention takes full advantage of the characteristics that monitoring target itself is a vibrating body, has consisted of together the piezo-electric generating system by a piezoelectric vibrator and piezoelectricity energy supply circuit are set, and can guarantee under any weather conditions the uninterrupted power supply to transducer.
Solar photovoltaic power of the present invention system has the following advantages:
(1) take solar energy as energy source, is converted into electric energy, prolongs the useful life of sensor network;
(2) cost is low, energy density is large, small volume;
(3) when enough providing electric energy for sensor node, can be the charge in batteries that carries simultaneously;
(4) application of management of charging and discharging circuit makes system move more safety and stability, convenient.
The solar recharging control chip has used BQ2057, and the protection chip of battery has used MAX1665.
The characteristics of the piezo-electric generating system among the present invention have:
(1) adopted the piezoelectric vibrator of equal strength beam type or homalographic beam type, substrate uses beryllium-bronze material, and elasticity is large, can improve the efficient of piezoelectric patches;
(2) adopt multi-disc piezoelectric patches syndeton, carry out circuit by parallel way between the piezoelectric patches and connect, voltage is identical with the voltage of monolithic piezoelectric sheet, and energy output is increased to original several times;
The connecting mode of multi-disc piezoelectric vibrator is to make Blast Furnace Top Gas Recovery Turbine Unit (TRT) have stronger generating capacity in less excitation density, wider frequency range.
Description of drawings
Fig. 1 is the wireless sensor network architectural schematic;
Fig. 2 is the structural representation of supply unit of the present invention;
Fig. 3 is structural representation of the present invention;
Fig. 4 is the mechanical mechanism schematic diagram of the piezoelectric vibrator of the embodiment of the invention one;
Fig. 5 is the mechanical mechanism schematic diagram of the piezoelectric vibrator of the embodiment of the invention two;
Fig. 6 is management of charging and discharging circuit theory diagrams of the present invention;
Fig. 7 is secondary battery protection circuit schematic diagram of the present invention;
Fig. 8 is the circuit theory diagrams of wireless communication line of the present invention;
Fig. 9 is the circuit theory diagrams of filter amplification circuit of the present invention;
Figure 10 signal processing circuit schematic diagram of the present invention;
Figure 11 is the piezoelectricity energy supply circuit schematic diagram of embodiments of the invention one;
Figure 12 is the piezoelectricity energy supply circuit schematic diagram of embodiments of the invention two.
Embodiment
Embodiment is described in further detail the present invention below in conjunction with accompanying drawing.
Embodiment one: a kind of wireless sensor device for civil engineering works structure health monitoring, comprise sensory package 10 and supply unit 5, sensory package 10 comprises transducer 1, signal processing circuit 2, filter amplification circuit 3 and wireless communication line 4, supply unit 5 comprises storage battery 51, power interface circuit 52, conversion luminous energy is that solar-energy photo-voltaic cell 53 and the conversion mechanical energy of electric energy is the piezoelectric vibrator 54 of electric energy, power interface 52 circuit comprise piezoelectricity energy supply circuit 521 and management of charging and discharging circuit 522, storage battery 51 respectively with transducer 1, signal processing circuit 2, filter amplification circuit 3 is connected connection with wireless communication line.Piezoelectric vibrator 54 comprises a mass 541, two fixed blocks 542 and two substrates 543, interconnect by a fixed block 542 between two substrates 543, mass 541 and fixed block 542 are separately positioned on the both sides of piezoelectric vibrator 54, be provided with piezoelectric patches 544 on the substrate 543, the material of piezoelectric patches 544 is the PZT piezoelectric ceramic, the material of substrate 543 is beryllium-bronze, and substrate 543 width vertically equates, is homalographic beam type piezoelectric oscillator.
Management of charging and discharging circuit 522 comprises the first fuse F
1, the second fuse F
2, the first resistance R
1, the second resistance R
2, the 3rd resistance R
3, the 4th resistance R
4, the 5th resistance R
5, the first capacitor C
1, the second capacitor C
2, the first triode Q
1, the first voltage stabilizing didoe D
1, the first LED
1, the first potentiometer TR
1With model be the solar recharging control chip U of BQ2057
1, an end ground connection of solar-energy photo-voltaic cell 53, the other end of solar-energy photo-voltaic cell 53 is by the first fuse F
1The rear first via is through the first capacitor C
1Be connected for the second tunnel while and solar recharging control chip U with ground
1The 3rd end connect with the 8th end, Third Road is through the first resistance R
1Afterwards with the first triode Q
1Emitter and solar recharging control chip U
1First end connect the first triode Q
1Base stage by the second resistance R
2With solar recharging control chip U
1The 7th end connect solar recharging control chip U
1The 6th end ground connection, the first triode Q
1Collector electrode and the first voltage stabilizing didoe D
1Negative pole connect the first voltage stabilizing didoe D
1The anodal first via by the second fuse F
2Be connected with the positive pole of storage battery 51, the second tunnel with solar recharging control chip U
1The second end connect, Third Road is by the second capacitor C
2Ground connection, solar recharging control chip U
1Five terminal by the first light-emitting diode D
1With the 3rd resistance R
3Ground connection, solar recharging control chip U
1The 4th end first via by potentiometer TR
1Be connected to ground with the negative pole of storage battery 51, the second tunnel by the 5th resistance R
5Ground connection, the 4th resistance R
4Be connected across solar recharging control chip U
1The 8th end and the 4th end between.
Piezoelectricity energy supply circuit 521 comprises bridge rectifier B
1And the 6th resistance R
6, the 7th resistance R
7, the 8th resistance R
8, the 9th resistance R
9, the tenth resistance R
10, the 11 resistance R
11, the 12 resistance R
12, the 3rd capacitor C
3, the 4th capacitor C
4, the 5th capacitor C
5, the 6th capacitor C
6, the second triode Q
2, the second voltage stabilizing didoe D
2, the first field effect transistor Q
3With model be the first integrated circuit (IC) chip U of MAX666
2, the two ends of piezoelectric vibrator 54 and bridge rectifier B
1The 1st end connect bridge rectifier B with the 3rd end
1The 2nd end respectively with the 6th resistance R
6An end, the 9th resistance R
9An end, the 3rd capacitor C
3An end, the 4th capacitor C
4An end and the first integrated circuit (IC) chip U
2The 8th end connect the 3rd capacitor C
3The other end respectively with the 7th resistance R
7An end, the second voltage-stabiliser tube D
2Negative terminal, bridge rectifier B
1The 4th end and the first field effect transistor Q
3Source electrode connect the 6th resistance R
6The other end respectively with the 5th capacitor C
5An end and the second triode Q
2Emitter connect the 7th resistance R
7The other end respectively with the second triode Q
2Collector electrode and the first field effect transistor Q
3Grid connect the second triode Q
2Base stage respectively with the 8th resistance R
8An end and the second voltage-stabiliser tube D
2Anode connect the 5th capacitor C
5The other end respectively with the first integrated circuit (IC) chip U
2The 7th end and the 12 resistance R
12An end connect the 12 resistance R
12The other end respectively with the first integrated circuit (IC) chip U
2The 1st～2 end, the tenth resistance R
10An end and the 6th capacitor C
6An end be connected to the positive pole of storage battery 51, the tenth resistance R
10The other end respectively with the first integrated circuit (IC) chip U
2The 3rd end and the 11 resistance R
11An end connect the 8th resistance R
8The other end, the 9th resistance R
9The other end, the 4th capacitor C
4The other end, the first field effect transistor Q
3Drain electrode, the first integrated circuit (IC) chip U
2The 4th～6 end, the 11 resistance R
11The other end and the 6th capacitor C
6The other end and the negative pole of storage battery 51 be connected to ground.
Operation principle of the present invention is:
1, solar-energy photo-voltaic cell 53, storage battery 51 are connected to respectively on the power interface circuit 52 by power line.Under the effect of efficient light photograph, solar-energy photo-voltaic cell 53 is electric energy with light energy conversion, is whole sensor device power supply after nursing one's health through power interface circuit 52 pairs of voltages, electric currents, and unnecessary electric energy can store among the storage battery 51 simultaneously.
2, substrate 543 is linked together by fixed block 542, pick up vibration by the mass 541 that is fixed on the substrate 543, produce strain at piezoelectric vibrator 54, and make piezoelectric patches 544 produce electric energy.Then, carry out the processing such as rectification, voltage transformation by power interface circuit 52, be whole sensor device power supply, unnecessary electric energy can store among the storage battery 51 simultaneously.
3, the operating state of the whole node of signal processing circuit 2 controls, on the one hand, transducer 1 measure physical quantities also is translated into the signal of telecommunication, after filter amplification circuit 3 processing on the transducer 1, be sent to 2 pairs of signals of signal processing circuit and process, on the other hand, when signal preliminary finish dealing with after, digitized signal is sent to wireless communication line 4, under the control of signal processing circuit 2, by wireless communication line 4 signal is encoded by being sent by antenna.
Embodiment two: other structure is identical with embodiment one, but piezoelectric vibrator 54 is different from embodiment one with piezoelectricity energy supply circuit 521, piezoelectric vibrator 54 comprises a mass 541, a fixed block 542 and a substrate 543, mass 541 and fixed block 542 are separately positioned on the both sides of piezoelectric vibrator, be provided with piezoelectric patches 544 on the substrate 543, wherein substrate 543 width vertically is the prismatic variation, is equal strength beam type piezoelectric vibrator; And piezoelectricity energy supply circuit 521 comprises that model is the rectification chip U of DF005S
3, model is the voltage transitions chip U of TPS62200
4, the 13 resistance R
13, the 14 resistance R
14, the 7th capacitor C
7, the 8th capacitor C
8, the 9th capacitor C
9, the tenth capacitor C
10With inductance coil L, the two ends of piezoelectric vibrator 54 and rectification chip U
3Input connect rectification chip U
3Two outputs in output and voltage transitions chip U
4V1 end be connected connection, rectification chip U with EN
3Two outputs in another output and voltage transitions chip U
4GND end ground connection, the 7th capacitor C
7With the 8th capacitor C
8Be connected across rectification chip U
3Two outputs between, voltage transitions chip U
4SW end be connected with the end of inductance coil L, the other end of inductance coil L respectively with the 13 resistance R
13An end, the 9th capacitor C
9An end and the tenth capacitor C
10An end be connected to the positive pole of storage battery 51, the 13 resistance R
13The other end respectively with the 9th capacitor C
9The other end, voltage transitions chip U
4FB end and the 14 resistance R
14An end connect the 14 resistance R
14The other end and the tenth capacitor C
10The other end be connected to ground.
Claims (8)
1. wireless sensor device that is used for civil engineering works structure health monitoring, comprise sensory package and the supply unit of powering to described sensory package, it is characterized in that described sensory package comprises transducer, filter amplification circuit, signal processing circuit and wireless communication line, described supply unit comprises storage battery, power interface circuit, conversion luminous energy is that solar-energy photo-voltaic cell and the conversion mechanical energy of electric energy is the piezoelectric vibrator of electric energy, described power interface circuit comprises piezoelectricity energy supply circuit and management of charging and discharging circuit, described solar-energy photo-voltaic cell is connected with described storage battery by described management of charging and discharging circuit, described piezoelectric vibrator is connected with described storage battery by described piezoelectricity energy supply circuit, described storage battery respectively with described transducer, described filter amplification circuit, described signal processing circuit be connected wireless communication line and connect, described management of charging and discharging circuit comprises the first fuse, the second fuse, the first resistance, the second resistance, the 3rd resistance, the 4th resistance, the 5th resistance, the first electric capacity, the second electric capacity, the first triode, the first voltage stabilizing didoe, the first light-emitting diode, the first potentiometer and model are the solar recharging control chip of BQ2057, one end ground connection of described solar-energy photo-voltaic cell, the other end of described solar-energy photo-voltaic cell by described the first fuse after the first via be connected with ground through described the first electric capacity, the second the road is connected with the 8th end with the 3rd end of described solar recharging control chip simultaneously, Third Road through behind described the first resistance with the emitter of described the first triode be connected the first end of solar recharging control chip and be connected, the base stage of described the first triode is connected with the 7th end of described solar recharging control chip by described the second resistance, the 6th end ground connection of described solar recharging control chip, the collector electrode of described the first triode is connected with the negative pole of described the first voltage stabilizing didoe, the anodal first via of described the first voltage stabilizing didoe is connected with the positive pole of described storage battery by described the second fuse, the second the tunnel is connected with the second end of described solar recharging control chip, Third Road is by described the second capacity earth, the five terminal of described solar recharging control chip is by described the first light-emitting diode and described the 3rd grounding through resistance, the 4th end first via of described solar recharging control chip is connected to ground by the negative pole of described potentiometer and described storage battery, the second the tunnel by described the 5th grounding through resistance, and described the 4th resistance is connected across between the 8th end and the 4th end of described solar recharging control chip.
2. a kind of wireless sensor device for civil engineering works structure health monitoring as claimed in claim 1, it is characterized in that described piezoelectric vibrator comprises a mass and at least one piezoelectric element, described piezoelectric element comprises fixed block and substrate, is provided with piezoelectric patches on the described substrate.
3. a kind of wireless sensor device for civil engineering works structure health monitoring as claimed in claim 2 is characterized in that described substrate width vertically equates.
4. a kind of wireless sensor device for civil engineering works structure health monitoring as claimed in claim 2 is characterized in that described substrate width vertically is prismatic and changes.
5. a kind of wireless sensor device for civil engineering works structure health monitoring as claimed in claim 2, the material that it is characterized in that described piezoelectric patches is the PZT piezoelectric ceramic, the material of described substrate is beryllium-bronze.
6. a kind of wireless sensor device for civil engineering works structure health monitoring as claimed in claim 1, it is characterized in that described piezoelectricity energy supply circuit comprises bridge rectifier and the 6th resistance, the 7th resistance, the 8th resistance, the 9th resistance, the tenth resistance, the 11 resistance, the 12 resistance, the 3rd electric capacity, the 4th electric capacity, the 5th electric capacity, the 6th electric capacity, the second triode, the second voltage stabilizing didoe, the first field effect transistor and model are the first integrated circuit (IC) chip of MAX666, the two ends of described piezoelectric vibrator are connected with the 3rd end with the 1st end of described bridge rectifier, the 2nd end of described bridge rectifier respectively with an end of described the 6th resistance, one end of described the 9th resistance, one end of described the 3rd electric capacity, one end of described the 4th electric capacity and the 8th end of described the first integrated circuit (IC) chip connect, the other end of described the 3rd electric capacity respectively with an end of described the 7th resistance, the negative terminal of described the second voltage-stabiliser tube, the 4th end of described bridge rectifier and the source electrode of described field effect transistor connect, the other end of described the 6th resistance is connected with an end of described the 5th electric capacity and the emitter of described the second triode respectively, the other end of described the 7th resistance is connected with the collector electrode of described the second triode and the grid of described the first field effect transistor respectively, the base stage of described the second triode is connected with an end of the 8th resistance and the anode of described the second voltage-stabiliser tube respectively, the other end of described the 5th electric capacity is connected with the 7th end of described the first integrated circuit (IC) chip and an end of described the 12 resistance respectively, the other end of described the 12 resistance respectively with the 1st～2 end of described the first integrated circuit (IC) chip, one end of described the tenth resistance and an end of described the 6th electric capacity are connected to the positive pole of described storage battery, the other end of described the tenth resistance is connected with the 3rd end of described the first integrated circuit (IC) chip and an end of described the 11 resistance respectively, the other end of described the 8th resistance, the other end of described the 9th resistance, the other end of described the 4th electric capacity, the 4th～6 end of described the first integrated circuit (IC) chip, the other end of the other end of described the 11 resistance and described the 6th electric capacity is connected to ground.
7. a kind of wireless sensor device for civil engineering works structure health monitoring as claimed in claim 1, it is characterized in that described piezoelectricity energy supply circuit comprises that model is the rectification chip of DF005S, model is the voltage transitions chip of TPS62200, the 13 resistance, the 14 resistance, the 7th electric capacity, the 8th electric capacity, the 9th electric capacity, the tenth electric capacity and inductance coil, the two ends of described piezoelectric vibrator are connected with the input of described rectification chip, an output in two outputs of described rectification chip is connected with EN with the V1 end of described voltage transitions chip and is connected, another output in two outputs of described rectification chip and the GND of described voltage transitions chip end ground connection, described the 7th electric capacity and described the 8th electric capacity are connected across between two outputs of described rectification chip, the SW end of described voltage transitions chip is connected with an end of described inductance coil, the other end of described inductance coil respectively with an end of described the 13 resistance, one end of described the 9th electric capacity and an end of described the tenth electric capacity are connected to the positive pole of described storage battery, the other end of described the 13 resistance respectively with the other end of described the 9th electric capacity, the FB end of described voltage transitions chip and an end of described the 14 resistance connect, and the other end of the other end of described the 14 resistance and described the tenth electric capacity is connected to ground.
8. a kind of wireless sensor device for civil engineering works structure health monitoring as claimed in claim 1 is characterized in that described power interface circuit is provided with secondary battery protection circuit.
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| CN102158876A (en) * | 2010-12-30 | 2011-08-17 | 北京林业大学 | Monitoring method and system based on Internet of things |
| CN102118432A (en) * | 2010-12-30 | 2011-07-06 | 北京林业大学 | Wireless multimedia sensor node system oriented to field ecological monitoring |
| CN104158254A (en) * | 2014-08-20 | 2014-11-19 | 淮阴工学院 | Electromagnetic piezoelectric composite type vibration energy conversion circuit |
| CN104299392A (en) * | 2014-11-07 | 2015-01-21 | 智性科技南通有限公司 | Wireless sensing node for monitoring health of building structure |
| US10401319B2 (en) * | 2017-01-16 | 2019-09-03 | The Boeing Company | Structural health monitoring system |
| CN109269761B (en) * | 2018-09-28 | 2020-10-09 | 杭州电子科技大学 | Self-powered sensor for evaluating rockfall risk |
| CN111525870B (en) * | 2020-04-21 | 2022-10-21 | 上海电力大学 | Building outer wall power generation system integrating piezoelectric effect and photovoltaic utilization |
| CN111551139A (en) * | 2020-05-11 | 2020-08-18 | 浙江大学 | Self-energy type structure monitoring wireless sensor based on piezoelectric effect |
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| CN201726173U (en) * | 2010-07-13 | 2011-01-26 | 宁波杉工结构监测与控制工程中心有限公司 | Wireless sensor device for civil engineering structure health monitoring |
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| CN201726173U (en) * | 2010-07-13 | 2011-01-26 | 宁波杉工结构监测与控制工程中心有限公司 | Wireless sensor device for civil engineering structure health monitoring |
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