CN205091071U - Steel pylons stress on -line monitoring system - Google Patents
Steel pylons stress on -line monitoring system Download PDFInfo
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- CN205091071U CN205091071U CN201520704421.2U CN201520704421U CN205091071U CN 205091071 U CN205091071 U CN 205091071U CN 201520704421 U CN201520704421 U CN 201520704421U CN 205091071 U CN205091071 U CN 205091071U
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Abstract
The utility model provides an octuple vibration wire sensor collection system, excitation circuit, filter circuit, shaping circuit, STM32 treater, wireless transmission module connect to form according to the preface, and whole monitoring system adopts solar energy power module to supply power of steel pylons stress on -line monitoring system, characterized by, it is by parallelly connected. The utility model discloses an useful result: the utility model has the advantages of simply, it is with low costs, reliable, can go out steel pylons stress by the accurate measurement. Still have the low price, it is practical in batches in the steel pylons circuit to be convenient for. Long -range radio transmission technology has overcome steel pylons electromagnetic interference's influence, convenient and fast and reliable advantage.
Description
Technical background
Iron tower of power transmission line is due to the effect of bearing ice coating load for a long time, wind load, column foot loosen these external environment load, this safety to transmission line of electricity, reliability service have a great impact, especially when the wire of electric power pylon both sides, ground wire ice cover are different, iron tower of power transmission line can be caused to bear unbalanced tensile force and run-off the straight, the broken string of falling tower will be caused when problem is serious, not only can bring huge economic loss to society, and can daily life be badly influenced.
Along with continuous upgrading and the development of electric system, transmission line of electricity falls the frequent generation of tower and line-outage contingency, and had a strong impact on the safe operation of electrical network, large-scale transmission line of electricity receives destruction.In order to ensure the safe operation of electrical network, will carry out on-line monitoring to the distribution situation of iron tower of power transmission line stress, obtain the position that each rod member of iron tower of power transmission line is subject to stress maximum, iron tower of power transmission line feeds back to operation maintenance personnel in time by stress situation the most at last.
During existing iron tower of power transmission line stress measurement, because dispersion is compared in steel tower distribution, with a varied topography, cost is higher, safeguards complicated.The Radio Transmission Technology adopted easily receives the impact of electric power pylon wire electromagnetic interference (EMI).
Summary of the invention
It is complicated that the utility model overcomes above-mentioned wiring, and cost is higher, safeguards complicated, by the shortcoming of electromagnetic interference influence.Provide a kind of electric power pylon Stress On-Line system.
The technical solution of the utility model is:
A kind of electric power pylon Stress On-Line system, the utility model feature is, it is sequentially connected to form by eight road vibrating wire sensor acquisition systems of parallel connection, excitation chain, filtering circuit, shaping circuit, STM32 processor, wireless transport module, and whole monitoring system adopts solar powered module for power supply.
Vibrating wire sensor acquisition system described in the utility model adopts the VMS-10B vibratory stress gauge comprising temperature acquisition function.
The single coil excitement of the signal de-energisation vibrating string type sensor that excitation chain described in the utility model can regulate by a frequency, makes vibrating wire sensor starting of oscillation.
Filtering circuit described in the utility model adopts quadravalence Bezier active low-pass filter.
Wireless transport module wireless transmission described in the utility model communicates with power optical fiber the Real Time Communication Network that OPGW combines, adopt the Mesh networking of multi-hop broadband, use the wireless router based on the wireless mesh of WDS, use IEEE802.11b to carry out long-distance transmissions.
Beneficial outcomes of the present utility model: the utility model has simply, and cost is low, reliably, can accurately measure the advantage of electric power pylon stress.Also have cheap, be convenient to batch in electric power pylon circuit practical.Long range radio transmissions technology overcomes the impact of electric power pylon electromagnetic interference (EMI), convenient and swift and reliable advantage.
Accompanying drawing explanation
Fig. 1 is the main block diagram of this novel system structure;
Fig. 2 is this novel excitation chain figure;
Fig. 3 is this Novel low pass wave filter circuit figure;
Fig. 4 is this Novel shaping circuit diagram;
Fig. 5 is this novel radio networking mode figure.
Embodiment
See accompanying drawing 1, a kind of electric power pylon Stress On-Line system, the utility model feature is, it is sequentially connected to form by eight road vibrating wire sensor acquisition systems of parallel connection, excitation chain, filtering circuit, shaping circuit, STM32 processor, wireless transport module, and whole monitoring system adopts solar powered module for power supply.
Vibrating wire sensor acquisition system described in the utility model adopts the VMS-10B vibratory stress gauge comprising temperature acquisition function.
The single coil excitement of the signal de-energisation vibrating string type sensor that excitation chain described in the utility model can regulate by a frequency, makes vibrating wire sensor starting of oscillation.
Filtering circuit described in the utility model adopts quadravalence Bezier active low-pass filter.
Wireless transport module wireless transmission described in the utility model communicates with power optical fiber the Real Time Communication Network that OPGW combines, adopt the Mesh networking of multi-hop broadband, use the wireless router based on the wireless mesh of WDS, use IEEE802.11b to carry out long-distance transmissions.
Vibrating wire sensor gathers ess-strain signal, and signal is through excitation chain, and filtering circuit, shaping circuit is modulated, and through the process of STM32 processor, is passed to host computer through wireless transport module.
See accompanying drawing 2, system excitation chain, the single coil excitement of the signal de-energisation vibrating string type sensor that can regulate by a frequency, if the natural frequency of the frequency of signal and vibratory string is close, vibratory string just can reach resonance state rapidly.Frequency due to pumping signal easily controls with software is convenient, as long as so the approximate range knowing vibratory string natural frequency (in general, the approximate range of the natural frequency of often kind of sensor is determined), just with the pumping signal de-energisation near this frequency it, just can make the very fast starting of oscillation of string.When TR_IN0 is high level, BG1, BG5, BG9 conducting simultaneously, to strainometer with high-voltage pulse pumping signal, when TR_INO is low level, BG1, BG5, BG9 ends simultaneously, and driving pulse disappears, and after the of short duration time, vibrating string type sensor exports natural frequency signal.
See accompanying drawing 3, system low pass wave circuit wave filter adopts quadravalence Bezier active low-pass filter.Low-pass filter adopts OPA37 high speed operation amplifier.Low-pass filter effectively can filter the noise jamming that vibrating wire sensor produces.Maximum sampling rate due to ADS1271 is 100KHz, so low-pass Bessel filter 3dB cutoff frequency is designed to 50KHz.
See accompanying drawing 4, system shaping circuit.The frequency exported due to vibrating string type sensor is the sine wave that amplitude constantly decays, and therefore, needing to be converted to square wave could be identified by processor.
See accompanying drawing 5, system wireless networking mode.Transmission technology adopt wireless transmission to communicate with power optical fiber Real Time Communication Network that (OPGW) combine, adopt the Mesh networking of multi-hop broadband, for improving transmission bandwidth, adopt directional antenna and multichannel concurrent technique, adopt dynamic conditioning network load mode to reach communication resource Appropriate application.Based on the wireless router of the wireless mesh of WDS, solve power transmission and transformation wireless communications application neighborhood covering area wide, the problem that transmission range is long.Router support WEP, the link encryption mode of WPA/WPA2,802.1X, have employed timing dormancy and initiatively wake up, the passive electricity-saving mechanism waken up.Between electric power pylon transmission node, form multi-hop, netted wireless network, adjacent node can realize data transmission, if a node damages, cannot realize data transmission, the node of being separated by also can realize data transmission.Terminal data to be communicated with power optical fiber by plnm network and imports transformer station's terminal into.At each steel tower place of a transmission line of electricity, a Radio Transmission Node is all installed, node collects the stress information that on steel tower, vibrating wire sensor collects, as the intermediate transmission station of information, by selecting suitable transmitted power, realize closing on tower and the communication of the remote-wireless between tower of being separated by, the node eventually to terminal transmits step by step.
Claims (4)
1. an electric power pylon Stress On-Line system, it is characterized in that, it is sequentially connected to form by eight road vibrating wire sensor acquisition systems of parallel connection, excitation chain, filtering circuit, shaping circuit, STM32 processor, wireless transport module, and whole monitoring system adopts solar powered module for power supply.
2. a kind of electric power pylon Stress On-Line system according to claim 1, is characterized in that, described vibrating wire sensor acquisition system adopts the VMS-10B vibratory stress gauge comprising temperature acquisition function.
3. a kind of electric power pylon Stress On-Line system according to claim 1, is characterized in that, described filtering circuit adopts quadravalence Bezier active low-pass filter.
4. a kind of electric power pylon Stress On-Line system according to claim 1, it is characterized in that, described wireless transport module wireless transmission communicates with power optical fiber the Real Time Communication Network that OPGW combines, adopt the Mesh networking of multi-hop broadband, use the wireless router based on the wireless mesh of WDS, use IEEE802.11b to carry out long-distance transmissions.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520704421.2U CN205091071U (en) | 2015-09-11 | 2015-09-11 | Steel pylons stress on -line monitoring system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520704421.2U CN205091071U (en) | 2015-09-11 | 2015-09-11 | Steel pylons stress on -line monitoring system |
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| CN205091071U true CN205091071U (en) | 2016-03-16 |
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| CN201520704421.2U Active CN205091071U (en) | 2015-09-11 | 2015-09-11 | Steel pylons stress on -line monitoring system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105136348A (en) * | 2015-09-11 | 2015-12-09 | 云南电网有限责任公司电力科学研究院 | Power transmission iron tower stress online monitoring system |
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2015
- 2015-09-11 CN CN201520704421.2U patent/CN205091071U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105136348A (en) * | 2015-09-11 | 2015-12-09 | 云南电网有限责任公司电力科学研究院 | Power transmission iron tower stress online monitoring system |
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