CN102147283B - Embedded self-energy supply wireless monitoring device of rotor equipment - Google Patents
Embedded self-energy supply wireless monitoring device of rotor equipment Download PDFInfo
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- CN102147283B CN102147283B CN2010106034802A CN201010603480A CN102147283B CN 102147283 B CN102147283 B CN 102147283B CN 2010106034802 A CN2010106034802 A CN 2010106034802A CN 201010603480 A CN201010603480 A CN 201010603480A CN 102147283 B CN102147283 B CN 102147283B
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Abstract
The invention discloses an embedded self-energy supply wireless monitoring device of rotor equipment, comprising a piezoelectric module, wherein the piezoelectric module is connected with a recovery control circuit, and the recovery control circuit is connected with a wireless module. The device is installed in a foundation with obvious vibration characteristics of the rotor equipment; when the rotor equipment operates, periodic pressure is generated to act on the piezoelectric module; and the periodic pressure is converted into a single-polarity semi-wave vibration signal by the recovery control circuit to carry out A/D acquisition and is sent by the wireless module. According to the embedded self-energy supply wireless monitoring device, vibration energy generated in the operation process can be recovered, and can be used for driving the wireless monitoring device to work, and power supply, additional monitoring sensors and conditioning equipment are not required. The embedded self-energy supply wireless monitoring device has the functions of abnormal state monitoring and vibration energy collecting, is convenient to maintain and is free from maintaining and has low cost.
Description
Technical field
The present invention relates to rotor apparatus Condition Monitoring Technology field, particularly a kind of flush type self energizing wireless monitoring device of rotor apparatus.
Background technology
The state monitoring apparatus of rotor apparatus is very important for rotor apparatus, can monitor the unusual condition of rotor apparatus through state monitoring apparatus, guarantees its good operation, reduces accident rate, greatly reduces the loss.But at present common rotor apparatus state monitoring apparatus all is to monitor rotor oscillation, monitor its running status through the data collection and analysis system through the eddy current sensor that is installed in the acceleration transducer on the axle bed or is installed in paraxial position; This type of is not enough below device ubiquity: very inconvenience is installed in (1); The installation of monitoring equipment even can influence the operate as normal of equipment in some cases; And the installation requirement of monitoring sensors such as acceleration transducer and eddy current sensor is very strict, very difficult; (2) monitoring equipment needs special power supply power supply, under the obviously good situation of equipment state, has expended a large amount of unnecessary energy; (3) the signal demand Special Equipment that obtains through monitoring sensor is nursed one's health, is calculated and analyze through row, just can obtain the abnormal vibrations information of rotor apparatus, and process is complicated; (4) need regularly monitoring sensor, conditioning analytical equipment to be safeguarded that cost is higher.
Summary of the invention
In order to overcome the shortcoming of above-mentioned prior art; The object of the present invention is to provide a kind of flush type self energizing wireless monitoring device of rotor apparatus; The vibrational energy that produces in can the reclaimer operational process, and drive self work with this, need not to supply power and extra monitoring sensor and conditioning device; ERST monitoring, vibratory output acquisition function are arranged, have simultaneously easy for installation, avoid safeguarding and advantage with low cost.
In order to achieve the above object, the technical scheme taked of the present invention is:
A kind of flush type self energizing wireless monitoring device of rotor apparatus comprises piezo electric module 1, recovery control circuit 2 and wireless module 3, and piezo electric module 1 is connected with recovery control circuit 2, and recovery control circuit 2 is connected with wireless module 3.
Described piezo electric module 1 comprises Condition Monitoring Unit 4 and energy recovery unit 5; Condition Monitoring Unit 4 constitutes by metal-piezo-electric ceramic composite material with energy recovery unit 5; Condition Monitoring Unit 4 only is made up of a compound substance monomer; Energy recovery unit 5 is formed in parallel by at least three compound substance monomers, and Condition Monitoring Unit 4 is positioned at the vibration core position, and energy recovery unit 5 is the center with Condition Monitoring Unit 4; The distribution that is centrosymmetric, described metal-piezo-electric ceramic composite material are by two copper sheets or other sheet metals and the material that is composited of the piezoelectric ceramics between being clipped in wherein.
Described recovery control circuit 2 comprises status monitoring circuit 6, vibration acquisition circuit 7, energy recovering circuit 8, mu balanced circuit 9 and control chip 10; The input end of the output terminal of Condition Monitoring Unit 4 and status monitoring circuit 6 and the signal input part of vibration acquisition circuit 7 are connected; The output terminal of status monitoring circuit 6 and vibration acquisition circuit 7 links to each other with an A/D pin with first interrupt pin of control chip 10 respectively; The energy input end of the output terminal of energy recovery unit 5 and energy recovering circuit 8 is connected; The energy supply output terminal of energy recovering circuit 8 is connected with the input end of mu balanced circuit 9; The output terminal of mu balanced circuit 9 is connected with the power pins of control chip 10; The control signal output ends of energy recovering circuit 8 is connected with the 2nd A/D pin with second interrupt pin of control chip 10 respectively with the energy state output terminal; The first control pin, the first control pin of control chip 10 output are connected with the control input end of vibration acquisition circuit 7 and the control input end of energy recovering circuit 8 respectively, and control chip 10 and wireless module 3 are connected through standard interface.
Described energy recovering circuit 8 comprises bidirectional electronic switch 11, full bridge rectifier 12, electric current monitor 13, super capacitor 14, generating circuit from reference voltage 15, comparer 16, the flash driving circuit 17 that has inductance; 5 two output terminals of energy recovery unit are connected to bidirectional electronic switch 11 two ends and full bridge rectifier 12 input ends that have inductance simultaneously; Full bridge rectifier 12 positive output ends are connected to super capacitor 14 and mu balanced circuit 9 positive input terminals through electric current monitor 13; The output of electric current monitor 13 is directly connected to the 2nd A/D pin of control chip 10; The output terminal of mu balanced circuit 9 is connected to the power pins of the input end and the control chip 10 of generating circuit from reference voltage 15 simultaneously; The output terminal of electric current monitor 12, generating circuit from reference voltage 15 is connected to the homophase and the inverting input of comparer 16 respectively; The output terminal of comparer 16 is connected to second interrupt pin of control chip 10; The second control pin of control chip 10 outputs is connected to the input end of flash driving circuit 17; The output terminal of flash driving circuit 17 is connected to the control input end of the bidirectional electronic switch 11 that has inductance, the equal ground connection of negative pole of super capacitor 14, mu balanced circuit 9, generating circuit from reference voltage 15, control chip 10.
Described status monitoring circuit 6 is made up of full bridge rectifier 18, peak detection circuit 19 and comparator circuit 20; The output terminal of Condition Monitoring Unit 4 is connected to the input end of full bridge rectifier 18; Full bridge rectifier 18 output terminals are connected to the input end of peak detection circuit 19; The output terminal of peak detection circuit 19 is input to the input end of comparator circuit 20, and comparator circuit 20 outputs are connected with first interrupt pin of control chip 10.
Described vibration acquisition circuit 7 is made up of electronic switch 21, full bridge rectifier 22 and modulate circuit 23; The output terminal of Condition Monitoring Unit 4 is connected to the input end of full bridge rectifier 22 through electronic switch 21; The output terminal of full bridge rectifier 22 is connected to the input end of modulate circuit 23; The output terminal of modulate circuit 23 is connected to an A/D pin of control chip 10, and the first control pin of control chip 10 outputs is connected to the control input end of electronic switch 21.
Principle of work of the present invention is:
This device is installed in the tangible ground of rotor apparatus vibration performance; During the rotor apparatus operation; Can produce periodic pressure and act on the equipment ground; Thereby act on the Condition Monitoring Unit of forming by metal-piezo-electric ceramic composite material in the piezo electric module 14 and energy recovery unit 5; Thereby vibration information and vibrational energy are converted into voltage signal and electric energy output, and energy recovery unit 5 is made up of a plurality of compound substance monomers, can under oscillating action, produce more electric energy and the energy recovering circuit 8 controlled through control chip 10 reclaims to greatest extent; And store the energy in the super capacitor 14, supply control chip 10 and wireless module 3 operate as normal to use.
The present invention is installed in the rotor apparatus ground, need not external sensor and signal condition equipment, therefore can the operate as normal of equipment not exerted an influence; The vibrational energy that device produces through vibration equipment drives self work dispense with outer connecting power; And owing to adopting the piezoelectricity Condition Monitoring Unit impression vibration that is positioned at the ground pressurized, life-span length and the periodic maintenance problem that does not exist use vibration transducer monitoring device to exist; Device not only can carry out early warning to the unit exception state; And can carry out the vibratory output collection through external wireless device wake control chip; Equipment running status is assessed; Simple and convenient and with low cost, for rotor apparatus normally move, reduce the loss and maintenance cost significant.
Description of drawings
Fig. 1 is a structural principle block diagram of the present invention.
Fig. 2 is the structural representation of piezo electric module 1 of the present invention.
Fig. 3 is the structural principle block diagram of energy recovering circuit 8 of the present invention.
Fig. 4 is the structural principle block diagram of status monitoring circuit 6 of the present invention and vibration acquisition circuit 7.
Fig. 5 is a control flow chart of the present invention.
Embodiment
Below in conjunction with accompanying drawing the present invention is done further detailed explanation.
With reference to Fig. 1, a kind of flush type self energizing wireless monitoring device of rotor apparatus comprises piezo electric module 1, recovery control circuit 2 and wireless module 3, and piezo electric module 1 is connected with recovery control circuit 2, and recovery control circuit 2 is connected with wireless module 3.
With reference to Fig. 2; Described piezo electric module 1 is made up of Condition Monitoring Unit 4 and energy recovery unit 5, is respectively applied for monitoring equipment vibrational state and the required electric energy of generator work, and the two constitutes by metal-piezo-electric ceramic composite material monomer; Shape can be the cymbals type, have the cymbals type or the drum type of slit; Condition Monitoring Unit 4 is independent separately with energy recovery unit 5, and wherein Condition Monitoring Unit 4 only comprises a monomer, is positioned at piezo electric module 1 center; Very effectively sensing device vibration; Be characterized in that the output charge amount is big and output voltage is lower, the A/D of convenient conditioning and coincidence control chip 10 gathers the requirement to voltage, and higher vibration survey sensitivity is arranged again simultaneously; Energy recovery unit 5 is formed in parallel by at least two monomers, balancedly is distributed in around the Condition Monitoring Unit 4, and be the center distribution that is centrosymmetric with Condition Monitoring Unit 4; Make the oscillating action that produces in the equipment running process can act on Condition Monitoring Unit 4 better; Simultaneously instantaneous impact being disturbed has certain weakening effect, guarantees that vibration signal can be delivered to Condition Monitoring Unit 4 well, exports the electric signal of accurate characterization device vibration; Improve the vibration monitoring precision; Use metal-piezo-electric ceramic composite material, effectively amplified and act on the acting force on the piezoelectric in the compound substance, the equiblibrium mass distribution of energy recovery unit 5; Make the monomer output energy of forming it that consistance preferably arranged, thus the energy that the high efficiente callback vibration equipment produces.Piezoceramic material hardness is high, and the inner stress of metal-piezo-electric ceramic composite material monomer is out of shape smallly in 0.3MPa during device work, makes Unit Installation can not exert an influence to the operate as normal of rotor apparatus.
Described recovery control circuit 2 comprises status monitoring circuit 6, vibration acquisition circuit 7, energy recovering circuit 8, mu balanced circuit 9 and control chip 10; The input end of the output terminal of Condition Monitoring Unit 4 and status monitoring circuit 6 and the signal input part of vibration acquisition circuit 7 are connected; The output terminal of status monitoring circuit 6 and vibration acquisition circuit 7 links to each other with an A/D pin with first interrupt pin of control chip 10 respectively; The energy input end of the output terminal of energy recovery unit 5 and energy recovering circuit 8 is connected; The energy supply output terminal of energy recovering circuit 8 is connected with the input end of mu balanced circuit 9; The output terminal of mu balanced circuit 9 is connected with the power pins of control chip 10; The control signal output ends of energy recovering circuit 8 is connected with the 2nd A/D pin with second interrupt pin of control chip 10 respectively with the energy state output terminal; The first control pin, the first control pin of control chip 10 output are connected with the control input end of vibration acquisition circuit 7 and the control input end of energy recovering circuit 8 respectively, and control chip 10 and wireless module 3 are connected through standard interface, and the vibration equipment energy passes through energy recovery unit 5 generation ac voltage signals; Transfer DC voltage to through energy recovering circuit 8; And through mu balanced circuit 9 generation normal voltages confession recovery control circuits 2 and wireless module 3 work uses, control chip 10 is according to the energy state signal of energy recovering circuit 8 inputs and the working method of control signal control energy recovery circuit 8, with maximum organic efficiency recovery vibrational energy.
With reference to Fig. 3; Described energy recovering circuit 8 comprises full bridge rectifier 12, super capacitor 14, electric current monitor 13, generating circuit from reference voltage 15, comparer 16, flash driving circuit 17 and has the bidirectional electronic switch 11 of inductance; 5 two output terminals of energy recovery unit are connected to bidirectional electronic switch 11 two ends and full bridge rectifier 12 input ends that have inductance simultaneously; Full bridge rectifier 12 positive output ends are connected to super capacitor 14 and mu balanced circuit 9 positive input terminals through electric current monitor 13; The output of electric current monitor 13 is directly connected to the 2nd A/D pin of control chip 10; The output terminal of mu balanced circuit 9 is connected to the power pins of the input end and the control chip 10 of generating circuit from reference voltage 15 simultaneously; The output terminal of electric current monitor 12, generating circuit from reference voltage 15 is connected to the homophase and the inverting input of comparer 16 respectively; The output terminal of comparer 16 is connected to second interrupt pin of control chip 10; The second control pin of control chip 10 outputs is connected to the input end of flash driving circuit 17, and the output terminal of flash driving circuit 17 is connected to the control input end of the bidirectional electronic switch 11 that has inductance, the equal ground connection of negative pole of super capacitor 14, mu balanced circuit 9, generating circuit from reference voltage 15, control chip 10.
With reference to Fig. 4; Described status monitoring circuit 6 is made up of full bridge rectifier 18, peak detection circuit 19 and comparator circuit 20; The output terminal of Condition Monitoring Unit 4 is connected to the input end of full bridge rectifier 18; Full bridge rectifier 18 output terminals are connected to the input end of peak detection circuit 19, and the output terminal of peak detection circuit 19 is input to the input end of comparator circuit 20, and comparator circuit 20 outputs are connected with first interrupt pin of control chip 10.
With reference to Fig. 4; Described vibration acquisition circuit 7 is made up of electronic switch 21, full bridge rectifier 22 and modulate circuit 23; The output terminal of Condition Monitoring Unit 4 is connected to the input end of full bridge rectifier 22 through electronic switch 21; The output terminal of full bridge rectifier 22 is connected to the input end of modulate circuit 23, and the output terminal of modulate circuit 23 is connected to an A/D pin of control chip 10, and the first control pin of control chip 10 outputs is connected to the control input end of electronic switch 21; Generally control chip 10 breaks off electronic switch 21; Circuit is not worked, and only when needs carried out the vibratory output collection, electronic switch 21 just can closed Vibration on Start-up Acquisition Circuit 7 carry out work.
Principle of work of the present invention is:
This device is installed in the tangible ground of rotor apparatus vibration performance; During the rotor apparatus operation; Can produce periodic pressure and act on the equipment ground; Thereby act on the Condition Monitoring Unit of forming by metal-piezo-electric ceramic composite material in the piezo electric module 14 and energy recovery unit 5; Thereby vibration information and vibrational energy are converted into voltage signal and electric energy output, and energy recovery unit 5 is made up of a plurality of compound substance monomers, can under oscillating action, produce more electric energy and the energy recovering circuit 8 controlled through control chip 10 reclaims to greatest extent; And store the energy in the super capacitor 14, supply control chip 10 and wireless module 3 operate as normal to use.
With reference to Fig. 5, when the rotor apparatus operate as normal, vibratory output is steady and basicly stable; Can not produce comparatively violent vibration; The magnitude of voltage that produces through Condition Monitoring Unit 4 also is in normal level, and the signal that status monitoring circuit 6 is input to control chip 10 is continuously low level, does not produce the fault interrupting signal; This moment, energy recovering circuit 8 produced SSHI control interrupt request with 2 times to the rotor apparatus gyro frequency; When enough big and super capacitor 14 energy storage were sufficient when the signal of the sign output current of electric current monitor 13 output, the bidirectional electronic switch 11 that control chip 10 in good time of short duration closures have inductance carried out SSHI control, and the while is in interruption; Control chip 10 also will characterize rotor apparatus and move normal wireless signal and send, and get into the low-power consumption park mode afterwards.
When equipment occur eccentric, when bumping ERST such as mill, surge; Oscillation intensity obviously increases; The vibration that acts on Condition Monitoring Unit 4 is obviously strengthened; Thereby the voltage peak that makes its generation is obviously greater than the voltage peak under the normal condition, and the peak detection circuit 19 of status monitoring circuit 6 obtains the high voltage peak of this moment, compares at comparator circuit 20 with reference voltage; Because this moment, voltage peak was higher than reference voltage level, the input end that links to each other with control chip 10 promptly produces the rising edge saltus step and continues high level.Rising edge triggers control chip 10 and produces fault interrupting; Waken up the back from dormant state and send the wireless signal that unusual condition appears in characterization device with the high speed high power, caution need be carried out the fault eliminating, and the accident that prevents takes place; Produce loss; And constantly whether detected state observation circuit 6 continues to keep high level, if continue high level, will continue to send unlimited alarm signal.Under any circumstance, fault interrupting has the highest interrupt priority level, has no progeny in breaking down and sends the wireless signal that unusual condition appears in characterization device immediately.Carry out after fault gets rid of in equipment downtime or monitoring maintenance, the signal that status monitoring circuit 6 is input to control chip 10 changes low level again into, after control chip detects low level, stops to send fault-signal, gets into the normal hibernation state.
When equipment operation need be assessed equipment running status after a period of time; External wireless device capable of using sends the numerical information that characterizes vibration acquisition and installs to this; Control chip 10 produces the wireless collection interruption after receiving wireless signal, gets into mode of operation from park mode immediately.Act on of the influence of the parallelly connected SSHI control method of energy recovery unit 5 in order to reduce as far as possible to vibration acquisition; Control chip is closed the SSHI control function; The full-bridge rectification recovery circuit that energy recovering circuit 8 gets into standard carries out energy recovery; Closed electronic switch 21 is communicated with vibration acquisition circuit 7 with Condition Monitoring Unit 4 simultaneously; The vibration signal of Condition Monitoring Unit perception carries out through full bridge rectifier 22 that polarity transforms, and voltage in the control core 10A/D sample conversion scope carries out the high-speed a/d collection and through wireless transmission, its signal that collects is the half-wave vibration signal after modulate circuit 23 changes into, and positive half cycle phase negative half period is at interval but all with positive half cycle performance.After data acquisition finished, control chip 10 was launched the SSHI control function once more and is broken off electronic switch, closed vibration acquisition circuit 7 backs and got into dormancy.
In the accompanying drawing: piezo electric module 1; Recovery control circuit 2; Wireless module 3; Condition Monitoring Unit 4; Energy recovery unit 5; Status monitoring circuit 6; Vibration acquisition circuit 7; Energy recovering circuit 8; Mu balanced circuit 9; Control chip 10; Bidirectional electronic switch 11; Full bridge rectifier 12; Electric current monitor 13; Super capacitor 14; Generating circuit from reference voltage 15; Comparer 16; Flash driving circuit 17; Full bridge rectifier 18; Peak detection circuit 19; Comparator circuit 20; Electronic switch 21; Full bridge rectifier 22; Modulate circuit 23.
Claims (5)
1. the flush type self energizing wireless monitoring device of a rotor apparatus; Comprise piezo electric module (1), recovery control circuit (2) and wireless module (3); It is characterized in that: piezo electric module (1) is connected with recovery control circuit (2), and recovery control circuit (2) is connected with wireless module (3);
Described piezo electric module (1) comprises Condition Monitoring Unit (4) and energy recovery unit (5); Condition Monitoring Unit (4) and energy recovery unit (5) constitute by metal-piezo-electric ceramic composite material; Condition Monitoring Unit (4) only is made up of a compound substance monomer; Energy recovery unit (5) is formed in parallel by at least three compound substance monomers, and Condition Monitoring Unit (4) is positioned at the vibration core position, and energy recovery unit (5) is the center with Condition Monitoring Unit (4); The distribution that is centrosymmetric, described metal-piezo-electric ceramic composite material are by two copper sheets or other sheet metals and the material that is composited of the piezoelectric ceramics between being clipped in wherein.
2. the flush type self energizing wireless monitoring device of a kind of rotor apparatus according to claim 1; It is characterized in that: described recovery control circuit (2) comprises status monitoring circuit (6), vibration acquisition circuit (7), energy recovering circuit (8), mu balanced circuit (9) and control chip (10); The input end of the output terminal of Condition Monitoring Unit (4) and status monitoring circuit (6) and the signal input part of vibration acquisition circuit (7) are connected; The output terminal of status monitoring circuit (6) and vibration acquisition circuit (7) links to each other with an A/D pin with first interrupt pin of control chip (10) respectively; The output terminal of energy recovery unit (5) is connected with the energy input end of energy recovering circuit (8); The energy supply output terminal of energy recovering circuit (8) is connected with the input end of mu balanced circuit (9); The output terminal of mu balanced circuit (9) is connected with the power pins of control chip (10); The control signal output ends of energy recovering circuit (8) is connected with the 2nd A/D pin with second interrupt pin of control chip (10) respectively with the energy state output terminal; The first control pin, the second control pin of control chip (10) output are connected with the control input end of vibration acquisition circuit (7) and the control input end of energy recovering circuit (8) respectively, and control chip (10) is connected through standard interface with wireless module (3).
3. the flush type self energizing wireless monitoring device of a kind of rotor apparatus according to claim 2; It is characterized in that: described energy recovering circuit (8) comprises full bridge rectifier (12), super capacitor (14), electric current monitor (13), generating circuit from reference voltage (15), comparer (16), flash driving circuit (17) and has the bidirectional electronic switch (11) of inductance; (5) two output terminals of energy recovery unit are connected to bidirectional electronic switch (11) two ends and full bridge rectifier (12) input end that has inductance simultaneously; Full bridge rectifier (12) positive output end is connected to super capacitor (14) and mu balanced circuit (9) positive input terminal through electric current monitor (13); The output of electric current monitor (13) is directly connected to the 2nd A/D pin of control chip (10); The output terminal of mu balanced circuit (9) is connected to the power pins of the input end and the control chip (10) of generating circuit from reference voltage (15) simultaneously; The output terminal of electric current monitor (12), generating circuit from reference voltage (15) is connected to the homophase and the inverting input of comparer (16) respectively; The output terminal of comparer (16) is connected to second interrupt pin of control chip (10); The second control pin of control chip (10) output is connected to the input end of flash driving circuit (17); The output terminal of flash driving circuit (17) is connected to the control input end of the bidirectional electronic switch (11) that has inductance, the equal ground connection of negative pole of super capacitor (14), mu balanced circuit (9), generating circuit from reference voltage (15), control chip (10).
4. the flush type self energizing wireless monitoring device of a kind of rotor apparatus according to claim 2; It is characterized in that: described status monitoring circuit (6) is made up of full bridge rectifier (18), peak detection circuit (19) and comparator circuit (20); The output terminal of Condition Monitoring Unit (4) is connected to the input end of full bridge rectifier (18); Full bridge rectifier (18) output terminal is connected to the input end of peak detection circuit (19); The output terminal of peak detection circuit (19) is input to the input end of comparator circuit (20), and comparator circuit (20) output is connected with first interrupt pin of control chip (10).
5. the flush type self energizing wireless monitoring device of a kind of rotor apparatus according to claim 2; It is characterized in that: described vibration acquisition circuit (7) is made up of electronic switch (21), full bridge rectifier (22) and modulate circuit (23); The output terminal of Condition Monitoring Unit (4) is connected to the input end of full bridge rectifier (22) through electronic switch (21); The output terminal of full bridge rectifier (22) is connected to the input end of modulate circuit (23); The output terminal of modulate circuit (23) is connected to an A/D pin of control chip (10), and the first control pin of control chip (10) output is connected to the control input end of electronic switch (21).
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| CN2010106034802A CN102147283B (en) | 2010-12-20 | 2010-12-20 | Embedded self-energy supply wireless monitoring device of rotor equipment |
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| CN2010106034802A CN102147283B (en) | 2010-12-20 | 2010-12-20 | Embedded self-energy supply wireless monitoring device of rotor equipment |
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| CN102147283B true CN102147283B (en) | 2012-05-09 |
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| CN108955864A (en) * | 2017-05-20 | 2018-12-07 | 天津大学（青岛）海洋工程研究院有限公司 | A kind of self-powered vibration frequency sensing system based on voltage multiplier technology |
| CN107576389A (en) * | 2017-09-14 | 2018-01-12 | 浙江海洋大学 | A kind of torsional vibration monitoring device |
| CN108593091A (en) * | 2018-04-28 | 2018-09-28 | 哈尔滨工程大学 | A kind of fault diagnosis and health monitoring device based on piezoelectric vibration energy collection |
| CN111091698B (en) * | 2019-12-30 | 2021-05-11 | 广东工业大学 | Wireless control system and wireless control method for realizing power supply on-off operation of equipment |
| CN111146853A (en) * | 2020-02-09 | 2020-05-12 | 南京凯奥思数据技术有限公司 | Wireless sensor with vibration energy recovery function and data transmission method thereof |
| CN111998939A (en) * | 2020-09-25 | 2020-11-27 | 江苏新道格自控科技有限公司 | Self-powered wireless vibration sensor for monitoring vibration of rotating machinery |
| CN113091888A (en) * | 2021-03-11 | 2021-07-09 | 西安交通大学 | Self-powered vibration monitoring system for power transmission line |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JPH07107752A (en) * | 1993-09-30 | 1995-04-21 | Mitsuteru Kimura | Piezoelectric generating device |
| US6259372B1 (en) * | 1999-01-22 | 2001-07-10 | Eaton Corporation | Self-powered wireless transducer |
| US7719416B2 (en) * | 2005-09-09 | 2010-05-18 | Microstrain, Inc. | Energy harvesting, wireless structural health monitoring system |
| GB0524737D0 (en) * | 2005-12-03 | 2006-01-11 | Rolls Royce Plc | Vibration sensor |
| CN101017989B (en) * | 2007-02-28 | 2011-04-20 | 西南科技大学 | Self-supply micro radio sensing network node based on the piezoelectric vibration power generation |
| CN101414192B (en) * | 2008-11-10 | 2011-01-19 | 南京航空航天大学 | Structure vibration and noise control device without outside energy supply |
| CN101488033B (en) * | 2008-12-12 | 2010-06-30 | 南京航空航天大学 | Structural vibration and noise control device based on energy recovery |
| CN101839684A (en) * | 2010-03-09 | 2010-09-22 | 南京航空航天大学 | Piezoelectric transducer and intelligent wireless sensing network node based on piezoelectric energy recovery |
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