CN106773967A - A kind of vibrating wire acquirer with vibrating wire sensor diagnosis - Google Patents
A kind of vibrating wire acquirer with vibrating wire sensor diagnosis Download PDFInfo
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- CN106773967A CN106773967A CN201611182771.2A CN201611182771A CN106773967A CN 106773967 A CN106773967 A CN 106773967A CN 201611182771 A CN201611182771 A CN 201611182771A CN 106773967 A CN106773967 A CN 106773967A
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- vibrating wire
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- 238000003745 diagnosis Methods 0.000 title claims abstract description 16
- 238000004891 communication Methods 0.000 claims abstract description 13
- 230000003750 conditioning effect Effects 0.000 claims abstract description 12
- 230000008878 coupling Effects 0.000 claims description 9
- 238000010168 coupling process Methods 0.000 claims description 9
- 238000005859 coupling reaction Methods 0.000 claims description 9
- 230000001276 controlling effect Effects 0.000 claims description 6
- 230000002159 abnormal effect Effects 0.000 claims description 3
- 230000005611 electricity Effects 0.000 claims description 3
- 238000012544 monitoring process Methods 0.000 abstract description 4
- 238000005086 pumping Methods 0.000 abstract description 3
- 230000005284 excitation Effects 0.000 description 10
- 230000004913 activation Effects 0.000 description 5
- 238000004804 winding Methods 0.000 description 4
- 238000012545 processing Methods 0.000 description 3
- 241001269238 Data Species 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/042—Programme control other than numerical control, i.e. in sequence controllers or logic controllers using digital processors
- G05B19/0428—Safety, monitoring
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/20—Pc systems
- G05B2219/26—Pc applications
- G05B2219/2656—Instrumentation
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- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
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Abstract
The present invention relates to a kind of vibrating wire acquirer with vibrating wire sensor diagnosis, structure safety and Health monitoring industry is applied to.It includes vibrating wire sensor, signal conditioning circuit, signal acquisition circuit, STM32 SCM systems, storage circuit, RTC clock circuit, exciting circuit, RS485 communication modules and vibrating wire sensor diagnostic circuit；Signal conditioning circuit and signal acquisition circuit are connected, and signal acquisition circuit is connected with the I/O port of STM32 SCM systems, and STM32 SCM systems control exciting circuit by pin, and connect storage circuit, and connect RTC clock circuit by I2C buses；RS485 communication modules are connected with STM32 SCM systems by serial ports controller.The present invention is operated according to the result that vibrating wire sensor is diagnosed, it is to avoid vibrating wire acquirer sends damage of the pumping signal to vibrating wire acquirer and vibrating wire sensor, improves the reliability of vibrating wire acquirer.
Description
Technical field
The present invention relates to a kind of vibrating wire acquirer with vibrating wire sensor diagnosis, structure safety and Health monitoring row is applied to
Industry.
Background technology
Vibrating string type sensor is the sensor of domestic and international most attention and a kind of wide variety of non-electricity measure at present.By
Directly export the natural frequency of vibration signal of vibratory string in vibrating wire sensor, therefore, with strong antijamming capability, by electrical parameter influenceed it is small,
Zero drift is small, temperature influence is small, stable and reliable for performance, vibration resistance, long lifespan the features such as.Vibrating wire sensor is used extensively
In engineering, the long term monitoring project of scientific research.Vibrating wire acquirer is the instrument and equipment for gathering vibrating wire sensor, mainly by swashing
Shake the part such as circuit, signal acquisition circuit, temperature collection circuit, data processing composition.The excitation that usual Acquisition Instrument passes through frequency sweep
Method encourages vibrating wire sensor, after exciting, Acquisition Circuit collection induced signal, and by the way that after AD conversion, single-chip microcomputer is by calculating
Draw the frequency of signal.
, it is necessary to first send high pressure activation signal to vibrating wire sensor coil during vibrating wire acquirer collection vibrating wire sensor, when
After string wire starting of oscillation, Acquisition Circuit pick-up winding induced signal calculates sensor frequency and signal amplitude, so as to complete a vibratory string
Sensor is gathered.When vibrating wire sensor is normal, the high-voltage signal that vibrating wire acquirer sends is then return to vibratory string collection by coil
Instrument, forms a complete excitation loop.But when vibrating wire sensor is abnormal, now vibrating wire acquirer sends to vibrating wire sensor
High pressure activation signal, may damage vibrating wire sensor and vibrating wire acquirer.
The content of the invention
For above-mentioned problem, patent of the present invention provides a kind of vibratory string collection with diagnosis vibrating wire sensor function
Instrument, during collection vibrating wire sensor, can first diagnose vibrating wire sensor state before pumping signal is sent, then being acquired,
The high-voltage signal for sending is avoided to produce damage to vibrating wire sensor and vibrating wire acquirer.
The present invention to achieve these goals, is adopted the following technical scheme that：
A kind of vibrating wire acquirer with vibrating wire sensor diagnosis, it includes vibrating wire sensor, signal conditioning circuit, signal acquisition
Circuit, STM32 SCM systems, storage circuit, RTC clock circuit, exciting circuit, RS485 communication modules and vibrating wire sensor
Diagnostic circuit；
Signal conditioning circuit and signal acquisition circuit are connected, and signal acquisition circuit is connected with the I/O port of STM32 SCM systems,
STM32 SCM systems control exciting circuit by pin, and connect storage circuit, and connect RTC clock electricity by I2C buses
Road；
RS485 communication modules are connected with STM32 SCM systems by serial ports controller.
Vibrating wire sensor diagnostic circuit is made up of light coupling relay, signal relay, DC5V power supplys and resistance I；
DC5V power supplys are connected to signal conditioning circuit during the light coupling relay control diagnosis vibrating wire sensor.
During collection vibrating wire sensor, STM32 SCM system control signals relay accesses vibrating wire sensor, while
The control light coupling relay conducting of STM32 SCM systems, after conducting, DC5V power supplys can be connected to vibratory string and sense by resistance I
Device, if vibrating wire sensor exception, DC5V power supplys form loop by resistance II and resistance III, if normally, DC5V power supplys
Then loop is formed by resistance I and vibrating wire sensor；
STM32 SCM systems read the magnitude of voltage between resistance II and resistance III, according to the difference of magnitude of voltage, then may determine that
The state of vibrating wire sensor.
The coil resistance of the vibrating wire sensor of collection is between 180 Ω ~ 200 Ω.
Exciting circuit is made up of high-pressure modular, and high-pressure modular can export 30V high pressures by STM32 Single-chip Controllings,
STM32 SCM systems control high-pressure modular to send by I/O pin, when to be gathered, Single-chip Controlling High voltage output, excitation
Vibrating wire sensor.STM32 SCM systems can select two kinds of different energisation modes, respectively resonance excitation to swash with multiple-pulse
Encourage, the sensor weaker for live amplitude signal can select to be encouraged by the way of resonance excitation, produce sensor
Resonance, can make cell winding sense larger signal, be easy to collection.
Signal conditioning circuit is made up of filter circuit and amplifying circuit.When sensor is gathered, vibrating wire sensor signal is very
It is faint, after filtering after circuit and amplifying circuit, situ part interference signal is filtered first, then vibrating wire sensor is sensed
Signal amplifies, and the signal of collection is met the input requirements of signal acquisition circuit.Signal acquisition circuit uses 16 independent ADC,
Sensor input signal is changed into data signal.
STM32 SCM systems to be input into Digital Signal Processing, the built-in TTF algorithms of single-chip microcomputer, by signal acquisition circuit
The time-domain signal of input is converted to frequency domain.After the completion of FFT is calculated, the frequency values and signal amplitude of vibrating wire sensor are drawn.Meanwhile,
STM32 Single-chip Controlling peripheral circuits, gather vibrating wire sensor temperature, and after the completion of collection, a data acquisition is completed.
RS485 communication modules are connected with STM32 SCM systems by serial ports controller, vibrating wire acquirer collection completion
Afterwards, gathered data is sent to RS485 communication modules, by the wireless data transmission equipment DTU above 485 buses, by data is activation
To cloud platform storage displaying.
Storage circuit is constituted using 32M storage chips, the built-in small files system of STM32 single-chip microcomputers, is stored for managing
Data.STM32 SCM systems are connected with storage circuit by I/O port pin.When data acquisition, STM32 SCM systems are same
When collection RTC clock time, during data is activation to the RS485 communication modules of collection, while saving the data in storage circuit
In, it is ensured that the reliability of data.Storage circuit can preserve a large amount of gathered datas using circulation storage mode.
Realization principle of the present invention：A kind of vibrating wire acquirer with vibrating wire sensor diagnosis, mainly by STM32 single-chip microcomputers system
System, exciting circuit, signal conditioning circuit, signal acquisition circuit, storage circuit, power circuit, telecommunication circuit, RTC clock circuit
And vibrating wire sensor diagnostic circuit composition.Wherein, SCM system is to use STM32 single-chip microcomputers, STM32 single-chip microcomputer volumes
Small, low in energy consumption, in the case of being operated in low-power consumption, operating current only has 50uA or so, and the built-in resource of single-chip microcomputer is more, facilitates monolithic
Control of the machine system to each several part logic circuit.Exciting circuit uses 30V high-pressure modulars, by transistor controls break-make, makes it
Cell winding can be encouraged before vibrating wire sensor is gathered.Signal conditioning circuit includes filter circuit and amplifying circuit, filter
Wave circuit can make the signal of 300Hz to 5000Hz normal through.The effect of amplifying circuit is to believe faint vibrating wire sensor
Number it is amplified to the signal that signal acquisition circuit can be recognized.Storage circuit can be stored data in locally, it is to avoid loss of data,
Ensure the continuity of data.Telecommunication circuit is made up of RS485, by RS485 chips, can connect Multichannel vibrating wire acquirer
To live 485 bus.RTC clock circuit is connected with STM32 SCM systems, for vibrating wire sensor collection provides acquisition time,
Electric power management circuit provides system working power by outside DC12V power supplys, and by being system after power management module treatment
Modules provide power management.Vibrating wire sensor diagnostic circuit is by DC5V power supplys, light coupling relay, signal relay and some
Capacitance resistance ware is constituted.When vibrating wire sensor is gathered, STM32 SCM systems control vibrating wire sensor diagnostic circuit to pass vibratory string
Sensor is diagnosed, if it is determined that vibrating wire sensor is normal, is then transmitted pumping signal operation, will otherwise stop gathering.
Beneficial effects of the present invention：
When the present invention solves the collection of structural safety monitoring industry vibrating wire acquirer, there is exception in vibrating wire sensor, can examine automatically
Disconnected vibrating wire sensor state, is operated according to the result that vibrating wire sensor is diagnosed, it is to avoid vibrating wire acquirer sends excitation letter
Damage number to vibrating wire acquirer and vibrating wire sensor, improves the reliability of vibrating wire acquirer.
Brief description of the drawings
Fig. 1 is internal electric connection diagram of the present invention；
Fig. 2 vibrating wire sensor diagnostic circuit schematic diagrames.
Specific embodiment
A kind of vibrating wire acquirer with vibrating wire sensor diagnosis, including vibrating wire sensor 1, signal conditioning circuit 2, signal
Acquisition Circuit 3, STM32 SCM systems 4, storage circuit 6, RTC clock circuit 7, exciting circuit 9, the He of RS485 communication modules 8
Vibrating wire sensor diagnostic circuit 5 is constituted.
Exciting circuit 9 is made up of high-pressure modular, and high-pressure modular can export 30V high pressures by STM32 Single-chip Controllings,
STM32 SCM systems 4 control high-pressure modular to send by I/O pin, when to be gathered, Single-chip Controlling High voltage output, excitation
Vibrating wire sensor 1.STM32 SCM systems 4 can select two kinds of different energisation modes, respectively resonance excitation and multiple-pulse
Excitation, the sensor weaker for live amplitude signal can select to be encouraged by the way of resonance excitation, produce sensor
Raw resonance, can make cell winding sense larger signal, be easy to collection.
Signal conditioning circuit 2 is made up of filter circuit and amplifying circuit, and when sensor is gathered, the signal of vibrating wire sensor 1 is non-
It is often faint, after filtering after circuit and amplifying circuit, situ part interference signal is filtered first, then by vibrating wire sensor 1
Induced signal amplifies, and the signal of collection is met the input requirements of signal acquisition circuit 3.Signal acquisition circuit 3 is only using 16
Vertical ADC, data signal is changed into by sensor input signal.
4 pairs of Digital Signal Processing of input of STM32 SCM systems, the built-in TTF algorithms of single-chip microcomputer, by signal acquisition circuit
The time-domain signal of 3 inputs is converted to frequency domain.After the completion of FFT is calculated, the frequency values and signal amplitude of vibrating wire sensor 1 are drawn.Together
When, the Control peripheral circuit of STM32 single-chip microcomputers 4 gathers vibrating wire sensor temperature, and after the completion of collection, a data acquisition is completed.
RS485 communication modules 8 are connected with STM32 SCM systems 4 by serial ports controller, and vibrating wire acquirer collection is completed
Afterwards, gathered data is sent to RS485 communication modules 8, by the wireless data transmission equipment DTU above 485 buses, data is sent out
Deliver to cloud platform storage displaying.
Storage circuit 6 is stored using 32M storage chips composition, the built-in small files system of STM32 single-chip microcomputers for managing
Data.STM32 SCM systems 4 are connected with storage circuit 6 by I/O port pin.When data acquisition, STM32 SCM systems
The time of RTC clock 7 is gathered simultaneously, during data is activation to the RS485 communication modules 8 of collection, while saving the data in storage
In circuit 6, it is ensured that the reliability of data.Storage circuit 6 can preserve a large amount of gathered datas using circulation storage mode.
Vibrating wire sensor diagnostic circuit 5 is by I 12 groups of light coupling relay 10, signal relay 13, DC5V power supplys 11 and resistance
Into.During collection vibrating wire sensor 1,4 control signal relay of STM32 SCM systems 13 accesses vibrating wire sensor 1, while
The control of STM32 SCM systems 4 light coupling relay 10 is turned on, and after conducting, DC5V power supplys 11 can be connected to by resistance I 12 and shake
Chord sensor, if vibrating wire sensor 1 is abnormal, DC5V power supplys 11 form loop by resistance II 14 and resistance III 15, if
Normally, DC5V power supplys then form loop by resistance I 12 and vibrating wire sensor 1.STM32 SCM systems 4 read resistance II 14
And the magnitude of voltage between resistance III 15, according to the difference of magnitude of voltage, then may determine that the state of vibrating wire sensor 1.
Claims (7)
1. it is a kind of with vibrating wire sensor diagnosis vibrating wire acquirer, it is characterised in that：It includes vibrating wire sensor（1）, signal
Modulate circuit（2）, signal acquisition circuit（3）, STM32 SCM systems（4）, storage circuit（6）, RTC clock circuit（7）, swash
Encourage circuit（9）, RS485 communication modules（8）With vibrating wire sensor diagnostic circuit（5）；
Signal conditioning circuit（2）And signal acquisition circuit（3）Connection, signal acquisition circuit（3）With STM32 SCM systems（4）
I/O port connection, STM32 SCM systems（4）Exciting circuit is controlled by pin, and connects storage circuit（6）, and by I2C
Bus connects RTC clock circuit（7）；
RS485 communication modules（8）With STM32 SCM systems（4）Connected by serial ports controller.
2. it is according to claim 1 with vibrating wire sensor diagnosis vibrating wire acquirer, it is characterised in that：Vibrating wire sensor
Diagnostic circuit（5）By light coupling relay（10）, signal relay（13）, DC5V power supplys（11）With resistance I（12）Composition；
The light coupling relay（10）Control diagnosis vibrating wire sensor（1）When by DC5V power supplys（11）It is connected to signal conditioning circuit
（2）.
3. according to claim 2 with vibrating wire sensor diagnose vibrating wire acquirer, it is characterised in that：
Collection vibrating wire sensor（1）When, STM32 SCM systems（4）Control signal relay（13）Access vibrating wire sensor
（1）, while STM32 SCM systems（4）Control light coupling relay（10）Conducting, after conducting, DC5V power supplys（11）Can pass through
Resistance I（12）Vibrating wire sensor is connected to, if vibrating wire sensor（1）It is abnormal, then DC5V power supplys（11）By resistance II（14）
With resistance III（15）Loop is formed, if normally, DC5V power supplys are then by resistance I（12）And vibrating wire sensor（1）Form loop；
STM32 SCM systems（4）Read resistance II（14）With resistance III（15）Between magnitude of voltage, according to magnitude of voltage not
Together, then may determine that vibrating wire sensor（1）State.
4. it is according to claim 1 with vibrating wire sensor diagnosis vibrating wire acquirer, it is characterised in that：The vibratory string of collection
Sensor（1）Coil resistance between 180 Ω ~ 200 Ω.
5. it is according to claim 1 with vibrating wire sensor diagnosis vibrating wire acquirer, it is characterised in that：Exciting circuit
（9）It is made up of high-pressure modular, high-pressure modular is by STM32 Single-chip Controllings.
6. it is according to claim 1 with vibrating wire sensor diagnosis vibrating wire acquirer, it is characterised in that：Signal condition electricity
Road（2）It is made up of filter circuit and amplifying circuit.
7. it is according to claim 1 with vibrating wire sensor diagnosis vibrating wire acquirer, it is characterised in that：RS485 communicates
Module（8）With STM32 SCM systems（4）Connected by serial ports controller.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201611182771.2A CN106773967A (en) | 2016-12-20 | 2016-12-20 | A kind of vibrating wire acquirer with vibrating wire sensor diagnosis |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201611182771.2A CN106773967A (en) | 2016-12-20 | 2016-12-20 | A kind of vibrating wire acquirer with vibrating wire sensor diagnosis |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107478182A (en) * | 2017-06-23 | 2017-12-15 | 江西飞尚科技有限公司 | A kind of multi-channel synchronous vibrating wire acquirer |
| CN107990919A (en) * | 2017-12-14 | 2018-05-04 | 上海岩联工程技术有限公司 | The self-adapting data acquisition method and device of a kind of vibrating wire sensor |
| CN110488697A (en) * | 2019-08-16 | 2019-11-22 | 江西飞尚科技有限公司 | A kind of Portable engineering and signal analyzer and its analysis method |
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| KR20130041572A (en) * | 2011-10-17 | 2013-04-25 | 한국전기연구원 | Complex condition diagnosis device and method for induction motor using on-line technique |
| WO2016014685A1 (en) * | 2014-07-22 | 2016-01-28 | Fisher Controls International Llc | Magnetic field sensor feedback for diagnostics |
| CN105738134A (en) * | 2014-12-10 | 2016-07-06 | 南京河海南自水电自动化有限公司 | Health diagnosis and prediction system for motor structure |
| CN206460280U (en) * | 2016-12-20 | 2017-09-01 | 江西飞尚科技有限公司 | A kind of vibrating wire acquirer diagnosed with vibrating wire sensor |
-
2016
- 2016-12-20 CN CN201611182771.2A patent/CN106773967A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201787958U (en) * | 2010-08-18 | 2011-04-06 | 无锡职业技术学院 | Multi-channel signal acquisition card of vibrating string type sensor and based on controller area network (CAN) bus |
| KR20130041572A (en) * | 2011-10-17 | 2013-04-25 | 한국전기연구원 | Complex condition diagnosis device and method for induction motor using on-line technique |
| WO2016014685A1 (en) * | 2014-07-22 | 2016-01-28 | Fisher Controls International Llc | Magnetic field sensor feedback for diagnostics |
| CN105738134A (en) * | 2014-12-10 | 2016-07-06 | 南京河海南自水电自动化有限公司 | Health diagnosis and prediction system for motor structure |
| CN206460280U (en) * | 2016-12-20 | 2017-09-01 | 江西飞尚科技有限公司 | A kind of vibrating wire acquirer diagnosed with vibrating wire sensor |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107478182A (en) * | 2017-06-23 | 2017-12-15 | 江西飞尚科技有限公司 | A kind of multi-channel synchronous vibrating wire acquirer |
| CN107990919A (en) * | 2017-12-14 | 2018-05-04 | 上海岩联工程技术有限公司 | The self-adapting data acquisition method and device of a kind of vibrating wire sensor |
| CN110488697A (en) * | 2019-08-16 | 2019-11-22 | 江西飞尚科技有限公司 | A kind of Portable engineering and signal analyzer and its analysis method |
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