CN102147283A - 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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- CN102147283A CN102147283A CN 201010603480 CN201010603480A CN102147283A CN 102147283 A CN102147283 A CN 102147283A CN 201010603480 CN201010603480 CN 201010603480 CN 201010603480 A CN201010603480 A CN 201010603480A CN 102147283 A CN102147283 A CN 102147283A
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- 238000012806 monitoring device Methods 0.000 title claims abstract description 17
- 238000012544 monitoring process Methods 0.000 claims abstract description 71
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- 238000001514 detection method Methods 0.000 claims description 12
- 230000002457 bidirectional effect Effects 0.000 claims description 11
- 239000000919 ceramic Substances 0.000 claims description 11
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- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 2
- 229910052802 copper Inorganic materials 0.000 claims description 2
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- 238000006243 chemical reaction Methods 0.000 description 2
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- 230000036541 health Effects 0.000 description 2
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- 230000035945 sensitivity Effects 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 230000003313 weakening effect Effects 0.000 description 1
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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 by 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 by the data collection and analysis system by the eddy current sensor that is installed in the acceleration transducer on the axle bed or is installed in paraxial position, this type of device ubiquity is following not enough: (1) installs very inconvenience, 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 by monitoring sensor is nursed one's health, is calculated and analyze through row, just can obtain the abnormal vibrations information of rotor apparatus, the process complexity; (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 with this drive self work, need not to power and extra monitoring sensor and conditioning device, abnormality 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 and energy recovery unit 5 constitute by metal-piezo-electric ceramic composite material, Condition Monitoring Unit 4 only is made of a compound substance monomer, energy recovery unit 5 is formed in parallel by at least three compound substance monomers, Condition Monitoring Unit 4 is positioned at the vibration core position, 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 the materials that is composited by two copper sheets or other sheet metals and the piezoelectric ceramics that is clipped in the middle of it.
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 of control chip 10 outputs, the first control pin is 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 by standard interface.
Described energy recovering circuit 8 comprises the bidirectional electronic switch 11 that has inductance, full bridge rectifier 12, electric current monitor 13, super capacitor 14, generating circuit from reference voltage 15, comparer 16, flash driving circuit 17,5 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 by 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, electric current monitor 12, the output terminal of 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, super capacitor 14, mu balanced circuit 9, generating circuit from reference voltage 15, the equal ground connection of the negative pole of 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 by 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, energy recovery unit 5 is made up of a plurality of compound substance monomers, the energy recovering circuit 8 that can produce more electric energy and control by control chip 10 under oscillating action reclaims to greatest extent, and store the energy in the super capacitor 14, use for control chip 10 and wireless module 3 operate as normal.
Condition Monitoring Unit 4 is come its duty of perception according to the vibration situation of equipment, the vibration peak of equipment detects by the peak detection circuit 19 of status monitoring circuit 6, when abnormal conditions occurring, vibration peak sharply increases, comparator circuit 20 outputs are transferred to high level and are continued to keep high level by low level, trigger control chip 10 and produce interruption, start the wireless signal that wireless module 3 sends the indication equipment fault; After fault was eliminated, 6 outputs of status monitoring circuit transferred low level to by high level again, and control chip 10 signal that no longer gives the alarm recovers operate as normal.Equipment running status is assessed and need be carried out vibratory output when gathering at needs, can send acquisition instructions to device by external wireless device, the closed electronic switch 21 of instruction that control chip 10 is received according to wireless module 3, thereby start the vibration acquisition circuit 7 be in closed condition at ordinary times, the equipment bipolarity vibration signal that Condition Monitoring Unit 4 perceives changes unipolar half-wave vibration signal in the control chip 10 voltage acquisition scopes into by full bridge rectifier 22 and modulate circuit 23 and carries out A/D and gather and send by wireless module 3.
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 by 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 by 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
The present invention is further detailed explanation below in conjunction with accompanying drawing.
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, be respectively applied for monitoring equipment vibrational state and the required electric energy of generator work, the two constitutes by metal-piezo-electric ceramic composite material monomer, shape can be the cymbals type, the cymbals type or the drum type that have slit, Condition Monitoring Unit 4 is independent separately with energy recovery unit 5, wherein Condition Monitoring Unit 4 only comprises a monomer, be 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 that conveniently nurses one's health and meet 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 be distributed in around the Condition Monitoring Unit 4, with Condition Monitoring Unit 4 is the center distribution that is centrosymmetric, make the oscillating action that produces in the equipment running process can act on Condition Monitoring Unit 4 better, simultaneously instantaneous impact is disturbed certain weakening effect is arranged, guarantee that vibration signal can be delivered to Condition Monitoring Unit 4 well, export the electric signal of accurate characterization device vibration, improve the vibration monitoring precision, use metal-piezo-electric ceramic composite material, effectively amplified and acted 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 be arranged, thus the energy that the high efficiente callback vibration equipment produces.Piezoceramic material hardness height, the stress of device metal-piezo-electric ceramic composite material monomer inside during work are out of shape smallly in 0.3MPa, make 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 of control chip 10 outputs, the first control pin is connected with the control input end of vibration acquisition circuit 7 and the control input end of energy recovering circuit 8 respectively, control chip 10 and wireless module 3 are connected by standard interface, the vibration equipment energy produces ac voltage signal by energy recovery unit 5, transfer DC voltage to through energy recovering circuit 8, and pass through mu balanced circuit 9 generation normal voltages and use for recovery control circuit 2 and wireless module 3 work, control chip 10 reclaims vibrational energy 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.
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 have 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 by 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, electric current monitor 12, the output terminal of 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, super capacitor 14, mu balanced circuit 9, generating circuit from reference voltage 15, the equal ground connection of the negative pole of 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, 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 by electronic switch 21, full bridge rectifier 22 and modulate circuit 23 are formed, the output terminal of Condition Monitoring Unit 4 is connected to the input end of full bridge rectifier 22 by 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, the first control pin of control chip 10 outputs is connected to the control input end of electronic switch 21, generally control chip 10 disconnects electronic switch 21, circuit is not worked, 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, energy recovery unit 5 is made up of a plurality of compound substance monomers, the energy recovering circuit 8 that can produce more electric energy and control by control chip 10 under oscillating action reclaims to greatest extent, and store the energy in the super capacitor 14, use for control chip 10 and wireless module 3 operate as normal.
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 by Condition Monitoring Unit 4 also is in normal level, the signal that status monitoring circuit 6 is input to control chip 10 is continuously low level, do not produce the fault look-at-me, this moment, energy recovering circuit 8 produced SSHI control interrupt request with 2 times to the rotor apparatus gyro frequency, when the signal of the sign output current of electric current monitor 13 output during enough big and super capacitor 14 energy storage abundance, the bidirectional electronic switch 11 that control chip 10 in good time of short duration closures have inductance carries out SSHI control, simultaneously in interruption, control chip 10 also will characterize rotor apparatus and move normal wireless signal and send, and enter the low-power consumption park mode afterwards.
When equipment occur eccentric, when bumping abnormality 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, the peak detection circuit 19 of status monitoring circuit 6 obtains the high voltage peak of this moment, compare 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 the fault interruption, be 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 fault and get rid of, 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 interrupts having 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, enters the normal hibernation state.
When equipment operation needs after a period of time equipment running status assessed, can utilize the external wireless device to send the numerical information that characterizes vibration acquisition installs to this, control chip 10 produces the wireless collection interruption after receiving wireless signal, enters mode of operation from park mode immediately.Act on of the influence of the SSHI control method in parallel 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 enters 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 the polarity conversion through full bridge rectifier 22 after the voltage that modulate circuit 23 changes in the control core 10A/D sample conversion scope carries out the high-speed a/d collection and passes through wireless transmission, its signal that collects is the half-wave vibration signal, 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 enabled the SSHI control function once more and is disconnected electronic switch, entered dormancy after closing vibration acquisition circuit 7.
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 (6)
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).
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 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 of a compound substance monomer, energy recovery unit (5) is formed in parallel by at least three compound substance monomers, Condition Monitoring Unit (4) is positioned at the vibration core position, 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 the materials that is composited by two copper sheets or other sheet metals and the piezoelectric ceramics that is clipped in the middle of it.
3. 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 of control chip (10) output, the first control pin is 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 by standard interface with wireless module (3).
4. the flush type self energizing wireless monitoring device of a kind of rotor apparatus according to claim 1, 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 have 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 by 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, electric current monitor (12), the output terminal of 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, super capacitor (14), mu balanced circuit (9), generating circuit from reference voltage (15), the equal ground connection of negative pole of control chip (10).
5. the flush type self energizing wireless monitoring device of a kind of rotor apparatus according to claim 1, it is characterized in that: described status monitoring circuit (6) is by full bridge rectifier (18), peak detection circuit (19) and comparator circuit (20) are formed, 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).
6. the flush type self energizing wireless monitoring device of a kind of rotor apparatus according to claim 1, it is characterized in that: described vibration acquisition circuit (7) is by electronic switch (21), full bridge rectifier (22) and modulate circuit (23) are formed, the output terminal of Condition Monitoring Unit (4) is connected to the input end of full bridge rectifier (22) by 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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Cited By (7)
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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 |
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 |
CN111091698A (en) * | 2019-12-30 | 2020-05-01 | 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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CN111091698A (en) * | 2019-12-30 | 2020-05-01 | 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 |
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