CN206269943U - Vibratory string collecting device - Google Patents
Vibratory string collecting device Download PDFInfo
- Publication number
- CN206269943U CN206269943U CN201621025120.8U CN201621025120U CN206269943U CN 206269943 U CN206269943 U CN 206269943U CN 201621025120 U CN201621025120 U CN 201621025120U CN 206269943 U CN206269943 U CN 206269943U
- Authority
- CN
- China
- Prior art keywords
- circuit
- vibrating wire
- wire sensor
- string
- frequency
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Abstract
Embodiment of the present utility model discloses a kind of vibratory string collecting device, including：At least one vibrating wire sensor, vibrating wire sensor frequency collection device and Big Dipper positioner；The vibrating wire sensor is used to sense the vibrations of string wire, and the vibrating wire sensor frequency collection device is used to obtain the vibration frequency of vibrating wire sensor, and the vibration frequency of vibrating wire sensor is sent into host computer；The Big Dipper positioner obtains the current latitude and longitude information of equipment and is sent to host computer.Vibrating wire sensor frequency collection device of the present utility model can simultaneously gather 8 frequencies of vibrating wire sensor, and communicated with host computer by various ways such as RS232 serial communication interfaces, ethernet network interface, GPRS wireless communication interfaces, receive BEI-DOU position system location information simultaneously and parse the longitude and latitude position of sensor, processor is submitted in the way of asynchronous serial data, the accurate management to multiple sensors is realized.
Description
Technical field
The utility model is related to Signal Collection Technology field, more particularly to a kind of vibratory string collecting device.
Background technology
Vibrating string type sensor (vibrating wire transducer) is using the metallic cord for tensing as sensing element
Resonant transducer.After the length of string determines, the variable quantity of its eigentone can characterize the big of pulling force suffered by string
It is small, by corresponding measuring circuit, so that it may the electric signal into certain relation with pulling force is obtained, because vibrating wire sensor is directly exported
The natural frequency of vibration signal of vibratory string, therefore, influenceed that small, zero drift is small, temperature influence with strong antijamming capability, by electrical parameter
The features such as small, stable and reliable for performance, vibration resistance, long lifespan, it is used widely in engineering, encourages vibrating string type sensor, and
The equipment for gathering its signal is exactly vibrating wire acquirer.
The vibrating wire acquirer of prior art mainly uses two kinds of technologies：High pressure is manipulated the strings excitation method, low pressure swept frequency excitation method：
The advocate approach that high pressure is manipulated the strings generally is amplified from triode to pulse signal, by transformer that triode is defeated
The AC signal for going out is coupled in voltage doubling rectifing circuit, by controlling the charging interval to electric capacity in voltage-multiplying circuit, adjusts electric capacity
The charging voltage at two ends, when electric capacity both end voltage reaches 110 volts or so, controls controlled silicon conducting, 110 volts of voltage to be added to and shake
On chorded coil, the electric current on coil produces the vibration of magnetically-actuated string wire, and when driving current disappears, vibratory string does damped vibration, now
Vibration frequency is the intrinsic frequency of string wire.
Low pressure swept frequency excitation method, 400~5000Hz is generally in the range of according to the intrinsic frequency of string wire, according to resonance principle,
When pumping signal is close or equal with the intrinsic frequency of sensor, string wire resonates, and during resonance, the amplitude of string wire is maximum,
When pumping signal stops, the electromotive force that string wire vibration is produced is maximum, in order to ensure string wire can starting of oscillation, pulse signal needed every
A period of time is kept in individual small frequency band.
In existing two kinds of technologies, high pressure excitation method circuit structure of manipulating the strings is complex, bulky, is unfavorable for test
Device miniaturization, low pressure swept frequency excitation method needs to enter row energization in a frequency range, monitors, and the time is more long, therefore, prior art
Need to improve.
Utility model content
The utility model embodiment technical problem to be solved is：A kind of vibratory string collecting device is provided, to solve
Problems of the prior art.
According to the one side of the utility model embodiment, there is provided a kind of vibratory string collecting device, including：
At least one vibrating wire sensor, vibrating wire sensor frequency collection device and Big Dipper positioner；The vibratory string sensing
Device is used to sense the vibrations of string wire, and the vibrating wire sensor frequency collection device is used to obtain the vibration frequency of vibrating wire sensor,
And the vibration frequency of vibrating wire sensor is sent to host computer；The Big Dipper positioner obtains the current latitude and longitude information of equipment simultaneously
It is sent to host computer；
The vibrating wire sensor frequency collection device includes：Output of pulse signal circuit, signal amplification shaping circuit, data
Acquisition Circuit, processor and signal circuit；
The output of pulse signal circuit is connected with the processor, with the step-length output pulse signal of 30Hz, with vibratory string
Sensor produces resonance；
The signal amplification shaping circuit is connected with the processor, and the signal amplification shaping circuit is by vibrating wire sensor
The flyback signal produced after starting of oscillation amplifies, is shaped to square wave, and edge is carried out to square wave rising edge or rising edge and trailing edge
Catch, the time difference caught by edge twice is calculated the cycle of flyback signal, so as to obtain the first vibration frequency of string wire
Rate；
The data acquisition circuit is connected with processor and signal amplification shaping circuit, the flyback signal after to amplification
Amplitude samples are carried out, Fast Fourier Transform (FFT) is carried out to the discrete signal that sampling is obtained, obtain the second vibration frequency of string wire；
The processor controls the output pulse frequency of the output of pulse signal circuit, and judges the first vibration of string wire
Whether frequency is less than setting threshold value with the difference of the second vibration frequency, if less than setting threshold value, with the first vibration frequency
It is the resulting vibration frequency of string wire with the average of the second vibration frequency；Otherwise it is assumed that this collection is invalid, the string wire for obtaining is deleted
The first vibration frequency and the second vibration frequency；Wherein it is determined that signal circuit described in the resulting vibration frequency of string wire includes：
RS232 interface circuits, ethernet interface circuit and GPRS radio communication circuits, by RS232 interface circuits, Ethernet interface electricity
The resulting vibration frequency information of string wire is sent to host computer by least one of road and GPRS radio communication circuits.
In another embodiment based on above-mentioned vibratory string collecting device, the vibrating wire sensor frequency collection device also includes
Electric power management circuit；
The electric power management circuit be respectively output of pulse signal circuit, signal amplification shaping circuit, data acquisition circuit,
Processor and signal circuit are powered.
In another embodiment based on above-mentioned vibratory string collecting device, the data acquisition circuit uses 12 analog-to-digital conversions
Device.
In another embodiment based on above-mentioned vibratory string collecting device, the output of pulse signal circuit is 8 tunnel pulse letters
Number output circuit.
In another embodiment based on above-mentioned vibratory string collecting device, the signal amplification shaping circuit is put for 8 road signals
Big shaping circuit.
In another embodiment based on above-mentioned vibratory string collecting device, the BEI-DOU position system circuit passes through asynchronous transmission
Mode is connected with processor, for receiving Big Dipper information and parsing the longitude and latitude position of oneself, with the side of asynchronous serial data
Formula submits to processor.
Compared with prior art, the utility model has advantages below：
Based on the vibratory string collecting device that the utility model above-described embodiment is provided, multiple vibrating wire sensors can be simultaneously gathered
Frequency, by the frequency of processor control wave output circuit, and produces resonance, signal to amplify shaping electricity with vibrating wire sensor
Road amplifies to the flyback signal after vibrating wire sensor starting of oscillation, is shaped to square wave, and catching On-Chip peripheral by the edge of processor obtains
The cycle of flyback signal is obtained, so as to calculate vibration frequency, Usage data collection is electric simultaneously to the flyback signal after amplification, shaping
Road carries out data acquisition, to collection after every group of discrete signal carry out Fast Fourier Transform (FFT), calculate the frequency of flyback signal,
After judging two frequency synthesis, final vibratory string frequency is determined, final vibratory string frequency passes through RS232 interface circuits, ether
The modes such as network interface circuit, GPRS radio communication circuits are sent to host computer, realize remote data collection and control to sensor
System, BEI-DOU position system receives Big Dipper information and parses the longitude and latitude position of sensor, is carried in the way of asynchronous serial data
Processor is given, the accurate management to multiple sensors is realized.
Below by drawings and Examples, the technical solution of the utility model is described in further detail.
Brief description of the drawings
The Description of Drawings embodiment of the present utility model of a part for specification is constituted, and is used for together with description
Explain principle of the present utility model.
Referring to the drawings, according to following detailed description, the utility model can be more clearly understood from, wherein：
Fig. 1 is the structural representation of the utility model vibratory string collecting device one embodiment.
Fig. 2 is the structural representation of another embodiment of the utility model vibratory string collecting device.
Fig. 3 is the specific example structural representation of another embodiment of the utility model vibratory string collecting device.
Fig. 4 is the structural representation of another embodiment of vibratory string collecting device of the present utility model.
Specific embodiment
Describe various exemplary embodiments of the present utility model in detail now with reference to accompanying drawing.It should be noted that：Unless another
Illustrate outward, the part and the positioned opposite of step, numerical expression and numerical value for otherwise illustrating in these embodiments are not limited
Make scope of the present utility model.
Simultaneously, it should be appreciated that for the ease of description, the size of the various pieces shown in accompanying drawing is not according to reality
Proportionate relationship draw.
The description only actually at least one exemplary embodiment is illustrative below, never as to this practicality
New and its application or any limitation for using.
May be not discussed in detail for technology and equipment known to person of ordinary skill in the relevant, but in appropriate situation
Under, the technology and equipment should be considered as a part for specification.
It should be noted that：Similar label and letter represents similar terms in following accompanying drawing, therefore, once a certain Xiang Yi
It is defined in individual accompanying drawing, then it need not be further discussed in subsequent accompanying drawing.
Fig. 1 is the structural representation of one embodiment of vibratory string collecting device of the present utility model, as shown in figure 1, the reality
The vibratory string collecting device for applying example includes：
At least one vibrating wire sensor 1, vibrating wire sensor frequency collection device 2 and the and of Big Dipper positioner 3, the vibratory string
Sensor 1 is used to sense the vibrations of string wire, and the vibrating wire sensor frequency collection device 2 is used to obtain the shake of vibrating wire sensor 1
Dynamic frequency, and the vibration frequency of vibrating wire sensor 1 is sent to host computer；The acquisition equipment of the Big Dipper positioner 3 is currently passed through
Latitude information is simultaneously sent to host computer；
The signal circuit includes：RS232 interface circuits, ethernet interface circuit and GPRS radio communication circuits,
The final of string wire is shaken by least one of RS232 interface circuits, ethernet interface circuit and GPRS radio communication circuits
Dynamic frequency information is sent to host computer.
Based on the vibratory string collecting device that the utility model above-described embodiment is provided, multiple vibrating wire sensors can be simultaneously gathered
Frequency, by the frequency of processor control wave output circuit, and produces resonance, signal to amplify shaping electricity with vibrating wire sensor
Road amplifies to the flyback signal after vibrating wire sensor starting of oscillation, is shaped to square wave, and catching On-Chip peripheral by the edge of processor obtains
The cycle of flyback signal is obtained, so as to calculate vibration frequency, Usage data collection is electric simultaneously to the flyback signal after amplification, shaping
Road carries out data acquisition, to collection after every group of discrete signal carry out Fast Fourier Transform (FFT), calculate the frequency of flyback signal,
After judging two frequency synthesis, final vibratory string frequency is determined, final vibratory string frequency passes through RS232 interface circuits, ether
The modes such as network interface circuit, GPRS radio communication circuits are sent to host computer, realize remote data collection and control to sensor
System, BEI-DOU position system receives Big Dipper information and parses the longitude and latitude position of sensor, is carried in the way of asynchronous serial data
Processor is given, the accurate management to multiple sensors is realized.
Fig. 2 is the structural representation of another embodiment of vibratory string collecting device of the present utility model, as shown in Fig. 2 institute
Stating vibrating wire sensor frequency collection device 2 includes：Output of pulse signal circuit 21, signal amplification shaping circuit 22, data acquisition
Circuit 23, processor 24 and signal circuit 25；
The output of pulse signal circuit 21 is connected with the processor, with the step-length output pulse signal of 30Hz, and shakes
Chord sensor produces resonance；
The signal amplification shaping circuit 22 is connected with the processor, and the signal amplification shaping circuit 22 passes vibratory string
The flyback signal produced after sensor starting of oscillation amplifies, is shaped to square wave, and square wave rising edge or rising edge and trailing edge are carried out
Edge catches, and the time difference caught by edge twice is calculated the cycle of flyback signal, and so as to obtain string wire first shakes
Dynamic frequency；The edge catches to be realized by processor, when the rising edge to square wave carries out edge to be caught, twice rising edge it
Between time difference be a cycle of flyback signal；And when rising edge and trailing edge to square wave all catch, twice
Time difference between seizure is the half period of flyback signal, is multiplied by for two cycles for obtaining flyback signal by by the time difference.Institute
State data acquisition circuit 23 to be connected with processor 24 and signal amplification shaping circuit 22, the flyback signal after to amplification is carried out
Amplitude samples, Fast Fourier Transform (FFT) is carried out to the discrete signal that sampling is obtained, and obtains the second vibration frequency of string wire；
The processor 24 controls the output pulse frequency of the output of pulse signal circuit 21, and judges the first of string wire
Whether vibration frequency is less than setting threshold value with the difference of the second vibration frequency, if less than setting threshold value, with the first vibration
The average of frequency and the second vibration frequency is the resulting vibration frequency of string wire；Otherwise it is assumed that this collection is invalid, delete what is obtained
First vibration frequency and the second vibration frequency of string wire；The resulting vibration frequency of string wire is sent to signal circuit 25.
When the difference of the second vibration frequency of first vibration frequency and string wire of string wire exceeds setting threshold value, explanation is adopted
Collection process there is a problem, now abandon the first vibration frequency of the string wire of acquisition and the second vibration frequency of string wire, enter again
Row collection, such as repeats problem, illustrates that equipment breaks down, and will notify that maintenance personal is repaired in time.
As shown in figure 3, above-described embodiment equipment is in specific example, the vibrating wire sensor frequency collection device also includes
Electric power management circuit 26,12 volts of voltages of direct current of the input of the electric power management circuit 26 are accessed after diode polarity is protected
DC-DC conversion chips produce 9 volts of voltages, and used as the power supply to the pulse of vibrating wire sensor 1 for producing resonance, 9 volts of voltages become through LDO
Change 5 volts of voltages into, 5 volts of voltage produces -5 volt voltages by polarity reversal again, amplifying circuit from positive and negative 5 volts of voltage to flyback signal
Power supply, 3.3 volts of voltages required for processor 21 works are also that 5 volts of voltages are converted through LDO.
Changed voltage is accessed by electric power management circuit, be that the circuit in equipment provides suitable voltage confession respectively
Electricity, and being powered respectively without multiple power supplys, carries out to circuit integrated on the basis of save space, makes equipment volume more
It is small, it is more convenient for operating with.
Fig. 4 is the structural representation of another embodiment of vibratory string collecting device of the present utility model, as shown in figure 4, institute
Stating signal circuit 25 includes：RS232 interface circuits 251, ethernet interface circuit 252, GPRS radio communication circuits 253,
The resulting vibration frequency information of string wire is sent to host computer 4, the resulting vibration frequency information of the string wire shakes for described first
The vibration frequency that dynamic frequency and second vibration frequency finally determine by comprehensive descision.
Based on the vibratory string collecting device that the utility model above-described embodiment is provided, the data acquisition circuit 23 uses 12
Analog-digital converter.
Based on the vibratory string collecting device that the utility model above-described embodiment is provided, the output of pulse signal circuit 21 is 8
Road output of pulse signal circuit.
Based on the vibratory string collecting device that the utility model above-described embodiment is provided, the signal amplification shaping circuit 22 is 8
Road signal amplification shaping circuit.
Based on the vibratory string collecting device that the utility model above-described embodiment is provided, the Big Dipper positioner is by asynchronous biography
Defeated mode is connected with processor, for receiving Big Dipper information and parsing the latitude and longitude information of equipment, with asynchronous serial data
Mode submits to processor 24.
Latitude and longitude information where current device is positioned by Big Dipper positioner, can be by the positional information of equipment in certain essence
It is determined in degree, the confirmation of monitoring and data source for equipment is particularly significant, when there is data error or equipment fault
When, staff can be quickly processed equipment by latitude and longitude information.
Each embodiment is described by the way of progressive in this specification, and what each embodiment was stressed is and it
The difference of its embodiment, same or analogous part cross-reference between each embodiment.
Description of the present utility model is given for the sake of example and description, and is not exhaustively or by originally
Utility model is limited to disclosed form.Many modifications and variations are for the ordinary skill in the art obvious.
Selection and description embodiment are, in order to more preferably illustrate principle of the present utility model and practical application, and to make the common skill of this area
Art personnel are it will be appreciated that the utility model is suitable to the various embodiments with various modifications of special-purpose so as to design.
Claims (6)
1. a kind of vibratory string collecting device, it is characterised in that including：At least one vibrating wire sensor, vibrating wire sensor frequency collection
Device and Big Dipper positioner；The vibrating wire sensor is used to sense the vibrations of string wire, the vibrating wire sensor frequency collection dress
Put to obtain the vibration frequency of vibrating wire sensor, and the vibration frequency of vibrating wire sensor is sent to host computer；The Big Dipper
Positioner obtains the current latitude and longitude information of equipment and is sent to host computer；
The vibrating wire sensor frequency collection device includes：Output of pulse signal circuit, signal amplification shaping circuit, data acquisition
Circuit, processor and signal circuit；
The output of pulse signal circuit is connected with the processor, with the step-length output pulse signal of 30Hz, is sensed with vibratory string
Device produces resonance；
The signal amplification shaping circuit is connected with the processor；
The data acquisition circuit is connected with processor and signal amplification shaping circuit；
The processor controls the output pulse frequency of the output of pulse signal circuit；Wherein it is determined that the resulting vibration of string wire
Signal circuit includes described in frequency：RS232 interface circuits, ethernet interface circuit and GPRS radio communication circuits, pass through
At least one of RS232 interface circuits, ethernet interface circuit and GPRS radio communication circuits by the resulting vibration of string wire frequently
Rate information is sent to host computer.
2. vibratory string collecting device according to claim 1, it is characterised in that the vibrating wire sensor frequency collection device is also
Including electric power management circuit；
The electric power management circuit is respectively output of pulse signal circuit, signal amplification shaping circuit, data acquisition circuit, treatment
Device and signal circuit are powered.
3. vibratory string collecting device according to claim 1, it is characterised in that the data acquisition circuit uses 12 moduluses
Converter.
4. vibratory string collecting device according to claim 1, it is characterised in that the output of pulse signal circuit is 8 road arteries and veins
Rush signal output apparatus.
5. vibratory string collecting device according to claim 1, it is characterised in that the signal amplification shaping circuit is 8 roads letter
Number amplification and rectification circuit.
6. the vibratory string collecting device according to claim 1-5 any one, it is characterised in that the Big Dipper positioner leads to
Cross Asynchronous Transfer Mode to be connected with processor, for receiving Big Dipper information and parsing the latitude and longitude information of oneself, with asynchronous string
The mode of row data submits to processor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621025120.8U CN206269943U (en) | 2016-08-31 | 2016-08-31 | Vibratory string collecting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621025120.8U CN206269943U (en) | 2016-08-31 | 2016-08-31 | Vibratory string collecting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206269943U true CN206269943U (en) | 2017-06-20 |
Family
ID=59036044
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621025120.8U Active CN206269943U (en) | 2016-08-31 | 2016-08-31 | Vibratory string collecting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206269943U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108538043A (en) * | 2018-06-01 | 2018-09-14 | 华南理工大学 | A kind of bridge strain monitoring system and method based on the WIFI communication technologys |
| CN109060197A (en) * | 2018-06-25 | 2018-12-21 | 中国海洋大学 | A kind of separated wireless transmission type vibration wire frequency plate reading with computing function |
| CN110333423A (en) * | 2019-06-19 | 2019-10-15 | 广州供电局有限公司 | Transformer current translation method, device, computer equipment and storage medium |
| CN113899444A (en) * | 2021-10-08 | 2022-01-07 | 招商局重庆交通科研设计院有限公司 | Resonance frequency measurement method of vibrating wire sensor based on Hanning double windows |
-
2016
- 2016-08-31 CN CN201621025120.8U patent/CN206269943U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108538043A (en) * | 2018-06-01 | 2018-09-14 | 华南理工大学 | A kind of bridge strain monitoring system and method based on the WIFI communication technologys |
| CN109060197A (en) * | 2018-06-25 | 2018-12-21 | 中国海洋大学 | A kind of separated wireless transmission type vibration wire frequency plate reading with computing function |
| CN110333423A (en) * | 2019-06-19 | 2019-10-15 | 广州供电局有限公司 | Transformer current translation method, device, computer equipment and storage medium |
| CN113899444A (en) * | 2021-10-08 | 2022-01-07 | 招商局重庆交通科研设计院有限公司 | Resonance frequency measurement method of vibrating wire sensor based on Hanning double windows |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN206269943U (en) | Vibratory string collecting device | |
| CN101839684A (en) | Piezoelectric transducer and intelligent wireless sensing network node based on piezoelectric energy recovery | |
| CN106712246A (en) | Self-powered sensing system based on surface acoustic wave sensor and control method thereof | |
| CN205301554U (en) | Ferreous characteristic testing arrangement of electromagnetism | |
| CN110365122B (en) | Self-powered wireless sensing system based on friction nano generator | |
| CN106981188B (en) | Wireless sensor network system based on vibrating wire type sensor and operation method thereof | |
| CN204613359U (en) | A kind of detection system of current transformer for metering secondary circuit state | |
| CN202522915U (en) | Data acquisition system based on vibration wire type sensor | |
| CN103292836A (en) | Measuring system and method of LC (inductive capacitive) sensor in sweep frequency mode | |
| CN207459809U (en) | Self energizing sensor-based system, tire pressure monitoring system, rail temperature monitoring system | |
| CN108702021A (en) | Collection of energy sensor | |
| CN108955788A (en) | A kind of contactless time difference method high-precision ultrasonic gas flowmeter | |
| CN101833032A (en) | High-voltage direct metering device | |
| CN107063147A (en) | A kind of dynamic strain measurement method of use vibrating string extensometer | |
| CN105678987B (en) | Unstable state vibration equipment wireless monitoring device | |
| Xu et al. | Miniature self-powered stick-on wireless sensor node for monitoring of overhead power lines | |
| CN203069733U (en) | A vibration-detection-based partial discharging point positioning device used for GIS tests | |
| CN203053474U (en) | Vibrating wire sensor adapter compatible with SDI-12 protocol | |
| CN100562450C (en) | Insulation-free track circuit compensation capacitor on-line active measuring device | |
| CN203489917U (en) | Intelligent data acquisition system of vibrating wire sensor | |
| CN213336458U (en) | Resonant frequency detection system | |
| CN110579229A (en) | Piezomagnetic sensor detection system based on frequency sweep detection | |
| CN202586514U (en) | EMSR electromagnetic energy transmitting and receiving system | |
| CN209639855U (en) | Based on wireless and passive thermometric vibration measuring system | |
| CN204129211U (en) | A kind of base passive and wireless multi-parameter sensor intelligent electric energy meter temperature rise detecting device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |