CN103438986A - Vibration and skewing analysis method - Google Patents
- ️Wed Dec 11 2013
CN103438986A - Vibration and skewing analysis method - Google Patents
Vibration and skewing analysis method Download PDFInfo
-
Publication number
- CN103438986A CN103438986A CN2013103559802A CN201310355980A CN103438986A CN 103438986 A CN103438986 A CN 103438986A CN 2013103559802 A CN2013103559802 A CN 2013103559802A CN 201310355980 A CN201310355980 A CN 201310355980A CN 103438986 A CN103438986 A CN 103438986A Authority
- CN
- China Prior art keywords
- vibration
- angle
- supervision platform
- monitor supervision
- deviation angle Prior art date
- 2013-08-15 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.)
- Granted
Links
Images
Landscapes
- Emergency Alarm Devices (AREA)
Abstract
The invention discloses a vibration and skewing analysis method. The method comprises the steps that (1) vibration and skewing parameters including the vibration threshold value, the skewing angle threshold value and the alarm level are set in a monitoring platform, (2) the monitoring platform receives vibration acceleration and vibration and skewing information sent by each monitoring terminal in real time through the network, (3) vibration acceleration analysis is carried out each time the monitoring platform receives the current vibration acceleration, (4) vibration and skewing angle analysis is carried out after skewing included angle calculation each time the monitoring platform receives the vibration and skewing information, (5) vibration and skewing results of each monitoring terminal are output from the monitoring platform. The vibration and skewing analysis method is strong in timeliness, good in compatibility, simple in operation, and capable of guaranteeing safety operation of power cables.
Description
Technical field
The present invention relates to the monitoring field of electric power tunnel equipment, relate in particular to a kind of vibration skew analytical approach.
Background technology
Along with sustained economic growth, in Modernized City Construction, keep away the existence of unavoidable various ground machine constructions, and the large-scale mechanical execution of this large tracts of land can jeopardize power delivery networks in Urban underground Tunnel accidentally, and Modern Urban Living and production are increasing to the dependence of electric power, the failure-free operation that electric power is carried is had higher requirement, and therefore ensures that the safe and reliable operation of underground electric power facility seems particularly important.Therefore whether, how effectively the mechanical execution behavior that is positioned at the underground installation periphery is implemented to monitoring and early warning, knowing periphery by inference has certain mechanical execution behavior to exist, and the cardinal principle orientation that calculates mechanical execution seems particularly important.
Summary of the invention
The deficiency existed for solving prior art, the invention discloses a kind of vibration skew analytical approach, the method receives and measures the various vibrations by the earth conduction by the monitoring terminal to installing in electric power tunnel, this analytical approach is according to analytical model, position, monitoring point, vibration frequency, oscillation intensity, speed, the acceleration information of system made, whether have certain mechanical execution behavior exist, thereby provide foundation for assessment and the strick precaution of risk if can know periphery by inference.
For achieving the above object, concrete scheme of the present invention is as follows:
A kind of vibration skew analytical approach comprises the following steps:
Step 1: the vibration migration parameter is set in monitor supervision platform, described parameter involving vibrations threshold value, deviation angle threshold value and alarm level;
Step 2: monitor supervision platform receives from monitoring host computer vibration acceleration and the vibration offset information that each monitor terminal sends by network mode in real time;
Step 3: the vibration acceleration analysis is done in the every reception of monitor supervision platform once current vibration acceleration;
Step 4: the every reception of monitor supervision platform is once vibrated offset information and do the analysis of vibration deviation angle after migration included angle is calculated;
Step 5: vibration and the migration result of each monitor terminal of output in monitor supervision platform.
In described step 2, vibration acceleration and vibration offset information receive and measure by being arranged on monitoring terminal in electric power tunnel.
The concrete steps that in described step 3, vibration acceleration is analyzed are as follows:
(1) receive the state value of vibration acceleration from monitor terminal;
(2) waveform values of vibration acceleration is got to amplitude, get the maximal value of vibration acceleration;
(3) be greater than the vibration threshold of setting when the maximal value of getting, platform will send warning information, and warning message is presented on monitor supervision platform, and there is destructive activity the reminding user position, and the suggestion user carries out manual intervention;
(4) do not exceed the threshold value of setting when the maximal value of the vibration acceleration of getting, do not carry out alarm, the vibration acceleration value is presented on monitor supervision platform;
The concrete steps that described step 4 vibration deviation angle is analyzed are as follows:
(1) receive X, the Y gathered from monitor terminal, the oscillating component of tri-directions of Z;
(2) carry out angle calculating according to the angle offset equation, calculate the angle deviation angle;
(3) deviation angle calculated and initial offset angle compare, and when difference is greater than the deviation angle threshold value of setting, platform sends warning message, and warning message is presented on monitor supervision platform, and reminding user carries out artificial emergency processing;
(4) do not exceed the deviation angle threshold value of setting when difference, do not carry out alarm, the oscillating component of X, Y, tri-directions of Z is presented on monitor supervision platform;
The computation process of described angle deviation angle is as follows:
If vectorial
a → = ( a 1 , a 2 , a 3 ) , b → = ( b 1 , b 2 , b 3 )Formula (2)
Wherein
for
with
vector angle, a 1, a 2, a 3for vector
oscillating component on X, Y, tri-directions of Z, b 1, b 2, b 3for vector
oscillating component on X, Y, tri-directions of Z.
By formula (2), can calculate the cosine value of vector angle.
Formula (3)
Because the monotonicity of cosine function on [0, π], calculate the angle deviation angle of space vector by formula (3).
The present invention for the various vibrations of the earth conduction, main vibration source comprises the vibration that the mechanical execution equipment such as quartering hammer, ram engine, ramming machine, street roller, excavator produce, this kind of equipment all directly acts on the earth with larger impulsive force and causes vibration, and vibration arrives through the earth conduction monitoring terminal that is positioned at underground installation.This kind equipment forms the intensity of percussive action apparently higher than other interference source to the earth; Equipment presents certain cyclical variation on the time when construction; In normal operation, plant equipment is not move or slowly move, by contrast, faster as the road traffic instrument translational speed of common interference main body.
Described vibration threshold, unit is acceleration of gravity, if the vibration acceleration value of receiving has surpassed vibration threshold, just represent that destructive activity may occur this monitor terminal periphery, this threshold value is manually to set by the operator on duty, and installation personnel needs to carry out an initial adaptive value after simulated damage after installing, after simulated damage, can in monitor supervision platform, see the size of this value, this value can be configured in vibration threshold the threshold value as vibration alarming.
Described deviation angle threshold value, migration included angle number of degrees, if the deviation angle value calculated has surpassed the deviation angle threshold value, just represent that destructive activity may occur this monitor terminal periphery, this threshold value is undertaken manually setting by the operator on duty, a security standpoint value after workmen's installation, need artificial judgement and calculate, and scope is the 0-180 degree.
Described alarm level, be exactly the judgement of warning accident importance to occurring, and the general alarm grade is divided into four grades: normal, minor alarm, significant alarm, and high severity alarm, according to alarm level manually is set, monitor supervision platform shows different alarm grades according to different numerical value.
The realization of this vibration skew analytical approach is to realize in the framework be comprised of monitor supervision platform, monitoring host computer, monitor terminal, wherein monitor terminal is placed and is fixed in electric power tunnel, monitoring host computer is placed in transformer station, and monitor supervision platform is arranged on the power monitoring center.Monitor terminal arrives monitoring host computer by the data upload gathered, monitoring host computer is transferred to monitor supervision platform by the data of receiving by network communication mode, the server be provided with in monitor supervision platform carries out analyzing and processing to the monitor data gathered in real time, analysis result is presented on monitor supervision platform, so that, for managerial personnel provide effective Monitoring Data, carry out manual intervention or early warning in early stage.
Described monitor terminal is a kind of hardware device that adopts high integration and ultralow Consumption, and this equipment is installed in electric power tunnel, various environmental datas in electric power tunnel are gathered, then by data upload to monitoring host computer.
Described monitoring host computer is the equipment that connects monitor supervision platform and monitor terminal, and the device data that its acquisition monitoring terminal collects, be sent to monitor supervision platform after data encapsulation.Monitoring host computer is transferred to monitor supervision platform by the data received in the mode of TCP/IP Ethernet interface.
Described monitor supervision platform possesses the function that data receiver, data processing, alarm generation, real time monitoring, history are checked.Monitor supervision platform is supported the access of multiple common equipment, can control and the data response monitored equipment fast, and have open framework, is convenient to the access of expanded function and third-party platform.This platform can carry out the increase and decrease of module according to user's demand, meet the demand of user's different levels.
Beneficial effect of the present invention:
Vibration skew analytical approach is by the vibration offset information gathered from subterranean tunnel, can within the very first time, find danger and the destruction information of cable periphery, with effective method, the mechanical execution behavior that is positioned at the underground installation periphery is implemented to monitoring and early warning, significant to the safe and reliable operation that ensures underground electric power facility.This analytical approach is by measurement and analysis to vibration, realize the monitoring of underground installation periphery mechanical execution behavior, and, according to information such as the analytical model of system made, position, monitoring point, vibration frequency, oscillation intensity, speed, acceleration, sound, analyze type and the construction location of Vibration Targets.Monitoring terminal is installed on appropriate location in underground installation, receives and measure the various vibrations by the earth conduction.When the parameter of measuring surpasses default threshold values, monitoring terminal starts to gather and upload vibration data.Platform is by the analysis to vibration data, whether can know periphery by inference has certain mechanical execution behavior to exist, can provide in time alarm and prompting to vibration and drift condition, and calculate the cardinal principle orientation of mechanical execution, thereby provide foundation for assessment and the strick precaution of risk.The enforcement of this analytical approach, both improved the security of various device and facility in the electric power tunnel, can carry out early warning and avoid unknown electric power accident in advance, avoided again the waste of manpower and materials, improved to a great extent the safe operation of cable, effectively prevent the further expansion of hidden danger and fault, reduced to greatest extent loss.The related vibration of native system skew analytical approach is real-time, compatible good, simple to operate, for the safe operation of power cable provides guarantee.
The accompanying drawing explanation
Fig. 1 vibrates skew analytical approach system architecture schematic diagram;
Fig. 2 vibrates skew analytical process schematic diagram;
Fig. 3 vibration analysis method schematic diagram;
Fig. 4 is offset the analytical approach schematic diagram;
In figure, 1. monitor supervision platform, 2. monitoring host computer, 3. monitor terminal.
Embodiment:
Below in conjunction with accompanying drawing, the present invention is described in detail:
As shown in Figure 1, vibration skew analytical approach system architecture schematic diagram, it comprises monitor supervision platform 1, and the monitoring host computer 2 be connected successively with monitor supervision platform 1 and monitor terminal 3.
Monitoring host computer 2 is arranged in transformer station, as the medium between monitor supervision platform 1 and monitor terminal 3, realizes the conversion of the communication protocol of monitor supervision platform 1 network service and monitor terminal 3, realizes the remote power feeding to monitor terminal 3, and communication such as patrols and examines at a series of functions.
Monitor terminal 3 can be detected cable sheath ground current and fault current, and monitor terminal 3 adopts ultralow Consumption, has realized Real-Time Monitoring and the collection that can't realize under conventional power consumption.
Between monitor terminal 3 and monitoring host computer 2, adopt bus to be connected, by monitoring host computer 2 remote power feedings, communication employing polling mode.
As Fig. 2, vibration skew analytical process schematic diagram, at first, monitor supervision platform is written into the vibration skew analytical parameters of setting, and parameter mainly contains vibration threshold, deviation angle threshold value and alarm level; Then, monitor supervision platform receives vibration offset data information in real time, and vibration acceleration value of every reception and offset information value, trigger a vibration analysis and skew is analyzed.Finally, the result output after analysis module will be analyzed, the display analysis result, notify the operator on duty to be disposed if any alarm generation.
The method to set up of vibration threshold and deviation angle threshold value: installation personnel needs to carry out an initial adaptive value after simulated damage after installing, vibration threshold unit is acceleration of gravity, after simulated damage, can in monitor supervision platform, see the size of this value, this value can be configured in vibration threshold the threshold value as vibration alarming; The deviation angle threshold value is a security standpoint value after installation, needs artificial judgement and calculates, and scope is the 0-180 degree.
Vibration analysis, can effectively judge vibration bursts intensity and vibration number; Skew is analyzed can make effective judgement to direction of vibration and Oscillation Amplitude; Vibration analysis and skew are analyzed, and whether have mechanical execution behavior exist, and calculate the cardinal principle orientation of mechanical execution if can realize predicting in advance periphery, the timely early warning before accomplishing to be out of order.These two kinds of analytical approachs organically combine, and by the analysis-by-synthesis to oscillation intensity, vibration frequency, direction of vibration and skew, can effectively prevent the safe operation of various device in electric power tunnel and cable.
As Fig. 3, the vibration analysis method schematic diagram, when monitor terminal 3 on certain direction, periodically monitor vibratory impulse (periodic vibration), perhaps in the unit interval, be consecutively detected high-intensity vibratory impulse (aperiodic vibration), monitor terminal 3 gathers vibration data, and be reported to monitor supervision platform 1, monitor supervision platform 1 receives the waveform values of vibration acceleration in real time, monitor supervision platform is according to the waveform values of getting, find the amplitude of waveform, it is the maximal value of vibration acceleration, if maximal value is more than or equal to the vibration threshold of setting, analyze and produce warning information, warning is divided into four grades: normal, minor alarm, significant alarm, and high severity alarm, large minizone according to the accekeration arranged, show different alarm grades, and warning information and vibration acceleration value are presented to monitor supervision platform 1, there is destructive activity warning information reminding user position, the suggestion user carries out manual intervention, if vibration acceleration is less than vibration threshold, can not report to the police, the value of vibration acceleration is presented at monitor supervision platform.
Described vibration acceleration has following relation with stressed and mass of object:
A=F/m formula (1)
A is acceleration in top formula (1), and F is the suffered impulsive force of acceleration direction, and m is mass of object, and from formula (1), acceleration and suffered impulsive force are proportional, and in the certain situation of quality, the power that is hit is large, and the acceleration obtained is with regard to greatly; The power that is hit is little, and the acceleration obtained is just little.The size that can more directly reflect vibratory impulse power by the measurement to acceleration, the size of the vibration acceleration that monitor terminal can directly be surveyed.
Described vibration threshold, unit is acceleration of gravity, if the vibration acceleration value of receiving has surpassed vibration threshold, just represent that destructive activity may occur this monitor terminal periphery, this threshold value is manually to set by the operator on duty, and installation personnel needs to carry out an initial adaptive value after simulated damage after installing, after simulated damage, can in monitor supervision platform, see the size of this value, this value can be configured in vibration threshold the threshold value as vibration alarming.
As Fig. 4, skew analytical approach schematic diagram, when certain monitor terminal 3 monitors periphery, vibratory impulse is arranged, will gather the vibration offset data and report monitor supervision platform 1, monitor supervision platform is to X, the Y gathered from monitor terminal 3, the oscillating component of tri-directions of Z, carry out angle calculating according to the vector angle computing formula, calculate the angle deviation angle, the deviation angle of calculating and initial offset angle compare, if angle difference is greater than the deviation angle threshold value of setting, will produce warning message, in monitor supervision platform display alarm, reminding user carries out artificial emergency processing; If angle difference does not exceed the deviation angle threshold value of setting, do not carry out alarm; If any warning, warning message is presented to monitor supervision platform; As there is no alarm generation, the oscillating component of getting X, Y, tri-directions of Z is presented to monitor supervision platform.
Space vector angle computing formula:
If vectorial
a → = ( a 1 , a 2 , a 3 ) , b → = ( b 1 , b 2 , b 3 )Formula (2)
Wherein
for
with
vector angle, a 1, a 2, a 3for vector
oscillating component on X, Y, tri-directions of Z, b 1, b 2, b 3for vector
oscillating component on X, Y, tri-directions of Z.
By formula (2), can calculate the cosine value of vector angle.
Because the monotonicity of cosine function on [0, π] can obtain vector angle by formula (2):
Formula (3)
Can calculate the angle of space vector by formula (3), by the difference with the original offset angle relatively, just the size of this time vibrating migration included angle can be known, if this migration included angle is greater than the deviation angle threshold value of setting, warning message will be produced, warning is divided into four grades: normal, minor alarm, significant alarm, and high severity alarm, large minizone according to the deviation angle arranged, show different alarm grades.
Before the deviation angle analysis, deviation angle does not have initial value, when skew is analyzed, monitor supervision platform receives X, the Y of collection, the oscillating component of tri-directions of Z for the first time, after calculating migration included angle, owing to there is no initial migration included angle, therefore, can't complete the comparison of deviation angle, therefore do not need the skew of comparison angle, analyze and finish.The vector angle angle of calculating for the first time is as the initial offset angle, and the vector angle later gathered all carries out difference relatively with this initial offset angle.
Described deviation angle threshold value, migration included angle number of degrees, if the deviation angle value calculated has surpassed the deviation angle threshold value, just represent that destructive activity may occur this monitor terminal periphery, this threshold value is undertaken manually setting by the operator on duty, a security standpoint value after workmen's installation, need artificial judgement and calculate, and scope is the 0-180 degree.
Although above-mentioned, by reference to the accompanying drawings the specific embodiment of the present invention is described; but be not limiting the scope of the invention; on the basis of technical scheme of the present invention, those skilled in the art do not need to pay various modifications that creative work can make still in protection scope of the present invention.
Claims (5)
1. a vibration skew analytical approach, is characterized in that, comprises the following steps:
Step 1: the vibration migration parameter is set in monitor supervision platform, described parameter involving vibrations threshold value, deviation angle threshold value and alarm level;
Step 2: monitor supervision platform receives from monitoring host computer vibration acceleration and the vibration offset information that each monitor terminal sends by network mode in real time;
Step 3: the vibration acceleration analysis is done in the every reception of monitor supervision platform once current vibration acceleration;
Step 4: the every reception of monitor supervision platform is once vibrated offset information and do the analysis of vibration deviation angle after migration included angle is calculated;
Step 5: vibration and the migration result of each monitor terminal of output in monitor supervision platform.
2. a kind of vibration skew analytical approach as claimed in claim 1, is characterized in that, the concrete steps that in described step 3, vibration acceleration is analyzed are as follows:
(1) receive the state value of vibration acceleration from monitor terminal;
(2) waveform values of vibration acceleration is got to amplitude, get the maximal value of vibration acceleration;
(3) be greater than the vibration threshold of setting when the maximal value of getting, platform will send warning information, and warning message is presented on monitor supervision platform;
(4) do not exceed the threshold value of setting when the maximal value of the vibration acceleration of getting, do not carry out alarm, the vibration acceleration value is presented on monitor supervision platform.
3. a kind of vibration skew analytical approach as claimed in claim 1, is characterized in that, the concrete steps that described step 4 vibration deviation angle is analyzed are as follows:
(1) receive X, the Y gathered from monitor terminal, the oscillating component of tri-directions of Z;
(2) carry out angle calculating according to the angle offset equation, calculate the angle deviation angle;
(3) deviation angle calculated and initial offset angle compare, and when difference is greater than the deviation angle threshold value of setting, platform sends warning message, and warning message is presented on monitor supervision platform;
(4) do not exceed the deviation angle threshold value of setting when difference, do not carry out alarm, the oscillating component of X, Y, tri-directions of Z is presented on monitor supervision platform.
4. a kind of vibration skew analytical approach as claimed in claim 3, is characterized in that, the computation process of described angle deviation angle is as follows:
If vectorial
a → = ( a 1 , a 2 , a 3 ) , b → = ( b 1 , b 2 , b 3 )Formula (2)
Wherein
for
with vector angle, a 1, a 2a 3for vector
oscillating component on X, Y, tri-directions of Z, b 1, b 1, b 3for vector
oscillating component on X, Y, tri-directions of Z,
Formula (3)
The monotonicity of cosine function on [0, π], calculate the angle deviation angle of space vector by formula (3).
5. a kind of vibration skew analytical approach as claimed in claim 1, is characterized in that, in described step 2, vibration acceleration and vibration offset information receive and measure by being arranged on monitoring terminal in electric power tunnel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310355980.2A CN103438986B (en) | 2013-08-15 | 2013-08-15 | A kind of vibration shift analysis method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310355980.2A CN103438986B (en) | 2013-08-15 | 2013-08-15 | A kind of vibration shift analysis method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103438986A true CN103438986A (en) | 2013-12-11 |
| CN103438986B CN103438986B (en) | 2016-08-10 |
Family
ID=49692682
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310355980.2A Active CN103438986B (en) | 2013-08-15 | 2013-08-15 | A kind of vibration shift analysis method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103438986B (en) |
Cited By (6)
* Cited by examiner, † Cited by third party| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105510959A (en) * | 2015-11-30 | 2016-04-20 | 山东康威通信技术股份有限公司 | Method for recognizing type of vibration source of tunnel, and vibration source positioning method |
| CN105700008A (en) * | 2014-11-26 | 2016-06-22 | 国家电网公司 | Cable channel external damage prevention underground sound monitoring early warning application system |
| CN108333472A (en) * | 2018-01-24 | 2018-07-27 | 江阴众和电力仪表有限公司 | Contact net holder loosens intelligent monitoring device, on-line monitoring system and its method |
| CN111337121A (en) * | 2020-03-13 | 2020-06-26 | 沈阳科网通信息技术有限公司 | Vibration signal deviation soft measurement and correction method for motor rotating equipment |
| CN114088192A (en) * | 2021-10-12 | 2022-02-25 | 向量传感科技(宁波)有限公司 | Vibration monitoring protection system and method and storage medium |
| CN114756819A (en) * | 2021-12-31 | 2022-07-15 | 杭州广立微电子股份有限公司 | Stability analysis method and system for integrated circuit production process |
Citations (5)
* Cited by examiner, † Cited by third party| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07286892A (en) * | 1994-04-18 | 1995-10-31 | Toshiba Corp | Device for monitoring/diagnosing rotating machine |
| JPH09257562A (en) * | 1996-03-19 | 1997-10-03 | Nippon Steel Corp | Electric machine abnormality diagnosis method |
| CN101226384A (en) * | 2008-01-15 | 2008-07-23 | 北京英华达电力电子工程科技有限公司 | Oscillation testing protective equipment and testing method |
| CN101393049A (en) * | 2008-08-25 | 2009-03-25 | 北京天源科创风电技术有限责任公司 | Method of Vibration Monitoring and Fault Diagnosis for Wind Turbine Generating Units |
| CN102120256A (en) * | 2010-12-30 | 2011-07-13 | 中冶连铸技术工程股份有限公司 | Method for determining deflection displacement-time change relationship in mold vibration |
-
2013
- 2013-08-15 CN CN201310355980.2A patent/CN103438986B/en active Active
Patent Citations (5)
* Cited by examiner, † Cited by third party| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07286892A (en) * | 1994-04-18 | 1995-10-31 | Toshiba Corp | Device for monitoring/diagnosing rotating machine |
| JPH09257562A (en) * | 1996-03-19 | 1997-10-03 | Nippon Steel Corp | Electric machine abnormality diagnosis method |
| CN101226384A (en) * | 2008-01-15 | 2008-07-23 | 北京英华达电力电子工程科技有限公司 | Oscillation testing protective equipment and testing method |
| CN101393049A (en) * | 2008-08-25 | 2009-03-25 | 北京天源科创风电技术有限责任公司 | Method of Vibration Monitoring and Fault Diagnosis for Wind Turbine Generating Units |
| CN102120256A (en) * | 2010-12-30 | 2011-07-13 | 中冶连铸技术工程股份有限公司 | Method for determining deflection displacement-time change relationship in mold vibration |
Non-Patent Citations (1)
* Cited by examiner, † Cited by third party| Title |
|---|
| 陈志新等: "结晶器振动偏移和相位差的在线检测与计算方法", 《测控技术》 * |
Cited By (7)
* Cited by examiner, † Cited by third party| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105700008A (en) * | 2014-11-26 | 2016-06-22 | 国家电网公司 | Cable channel external damage prevention underground sound monitoring early warning application system |
| CN105700008B (en) * | 2014-11-26 | 2019-05-14 | 国家电网公司 | A kind of anti-external force destruction rock noise monitoring and warning application system of cable passage |
| CN105510959A (en) * | 2015-11-30 | 2016-04-20 | 山东康威通信技术股份有限公司 | Method for recognizing type of vibration source of tunnel, and vibration source positioning method |
| CN108333472A (en) * | 2018-01-24 | 2018-07-27 | 江阴众和电力仪表有限公司 | Contact net holder loosens intelligent monitoring device, on-line monitoring system and its method |
| CN111337121A (en) * | 2020-03-13 | 2020-06-26 | 沈阳科网通信息技术有限公司 | Vibration signal deviation soft measurement and correction method for motor rotating equipment |
| CN114088192A (en) * | 2021-10-12 | 2022-02-25 | 向量传感科技(宁波)有限公司 | Vibration monitoring protection system and method and storage medium |
| CN114756819A (en) * | 2021-12-31 | 2022-07-15 | 杭州广立微电子股份有限公司 | Stability analysis method and system for integrated circuit production process |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103438986B (en) | 2016-08-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103438986A (en) | 2013-12-11 | Vibration and skewing analysis method |
| CN103806005B (en) | 2015-12-30 | A kind of intelligent remote monitoring of underground utilities galvanic protection, monitoring method |
| CN201331378Y (en) | 2009-10-21 | Vibration tester |
| CN102509421B (en) | 2013-07-03 | Real-time monitoring and prewarning system for geological disasters |
| US20100027380A1 (en) | 2010-02-04 | Sensor unit having a directional aperture |
| CN201569426U (en) | 2010-09-01 | High-pressure power transmission pole tower incline situation monitoring device |
| CN106768265A (en) | 2017-05-31 | A kind of Measures for Explosive Vibration in Tunnel test system and method based on wireless telecommunications |
| CN102186186B (en) | 2013-08-14 | Wireless sensor network motoring method and system for infrastructure |
| CN111009087B (en) | 2021-06-15 | Mining area anti-border-crossing illegal mining monitoring and early warning method and system |
| CN103076533A (en) | 2013-05-01 | Analysis method for line parameter and fault disturbance in power grid |
| CN108268972A (en) | 2018-07-10 | Led to based on day and monitor prewarning analysis system and method on-line with the aviation integral admittance electric power facility of big-dipper satellite |
| CN110988588A (en) | 2020-04-10 | Distributed power grid distribution line working condition monitoring system and monitoring method |
| CN104793062A (en) | 2015-07-22 | Field terminal equipment lightning protection method based on agricultural internet of things |
| WO2022198212A2 (en) | 2022-09-22 | Fault detection and monitoring |
| CN204119531U (en) | 2015-01-21 | Distributed energy circuit Multidimensional Awareness system |
| CN106965833A (en) | 2017-07-21 | A kind of method of automatic monitoring damper rail performance |
| CN202231875U (en) | 2012-05-23 | Power transmission line monitoring base station and system |
| CN113465527B (en) | 2023-03-21 | Tunnel surrounding rock stability monitoring device and method |
| CN204244248U (en) | 2015-04-01 | A kind of intelligent tower safety monitoring system |
| CN112070999B (en) | 2022-05-31 | Underground pipe network protection warning board and vibration signal identification method thereof |
| CN103578231A (en) | 2014-02-12 | Landslide and debris flow alarm system based on Internet of Things |
| CN203882417U (en) | 2014-10-15 | Alarm system for landslide and debris flow based on IOT (Internet of Things) |
| CN112611354A (en) | 2021-04-06 | A mine surface subsidence monitoring system |
| CN203849835U (en) | 2014-09-24 | Wireless data acquisition control system |
| CN117649748A (en) | 2024-03-05 | Online monitoring system and method for preventing external damage of high-voltage power cable |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 2013-12-11 | C06 | Publication | |
| 2013-12-11 | PB01 | Publication | |
| 2014-01-08 | C10 | Entry into substantive examination | |
| 2014-01-08 | SE01 | Entry into force of request for substantive examination | |
| 2016-08-10 | C14 | Grant of patent or utility model | |
| 2016-08-10 | GR01 | Patent grant | |
| 2021-01-22 | CP03 | Change of name, title or address | |
| 2021-01-22 | CP03 | Change of name, title or address |
Address after: 250101 A203, block F, entrepreneurship square, Qilu Software Park, No.1 Shunhua Road, high tech Development Zone, Jinan City, Shandong Province Patentee after: Conway Communication Technology Co., Ltd Address before: 250101 Qilu Software Park, No. 1 Shunhua Road, Jinan High-tech Development Zone, Shandong Province, A 203 Patentee before: SHANDONG KANGWEI COMMUNICATION TECHNOLOGY Co.,Ltd. |