CN110196279B - Theater steel wire safety detection method - Google Patents
Theater steel wire safety detection method Download PDFInfo
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- CN110196279B CN110196279B CN201910461729.1A CN201910461729A CN110196279B CN 110196279 B CN110196279 B CN 110196279B CN 201910461729 A CN201910461729 A CN 201910461729A CN 110196279 B CN110196279 B CN 110196279B
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- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
- G01N29/04—Analysing solids
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
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Abstract
The invention provides a theater steel wire safety detection method, which relates to the technical field of stage safety and comprises the following steps: s1: dividing the steel wire into at least one detection unit, and mounting a positioner on the detection unit; s2: suspending an article of predetermined mass on a steel wire; s3: sending a beam of sound wave with preset frequency to the direction of the steel wire at intervals of preset time by adopting an ultrasonic generator; s4: acquiring the position of the positioner in real time, drawing a vibration curve of the positioner, and acquiring a safety coefficient of the steel wire; s5: judging whether the safety coefficient value of the steel wire is lower than a preset safety threshold value or not, and if so, giving an alarm; otherwise, the process returns to step S4. The theater steel wire safety detection method is convenient to detect, high in accuracy, free of steel wire disassembly, capable of performing safety detection at any time and small in influence of external factors.
Description
Technical Field
The invention relates to the technical field of stage safety,
in particular, the invention relates to a theater steel wire safety detection method.
Background
Along with the increasing abundance of cultural life, people have higher and higher requirements on stage effects in performance activities, and in order to enable performance arts to generate unusual special effects, various types of stage mechanical equipment are installed in modern various large-scale performance places and the like, and the stage mechanical equipment plays the roles of drawing dragon eyes and making a look in the stage performance.
Stage theatre often needs the steel wire, during especially the stage performance, in order to demonstrate graceful aerial dance, the performer need be with the help of steel wire wei ya, circumference annular flight in stage sky, carry out various action performances, perhaps camera instrument and light etc. carry out stage shooting and stage arrangement to reasonable place with the help of steel wire displacement again, however, because performer or apparatus suspend in midair at the air motion, personnel are numerous in the theatre, very high to the safety requirement of steel wire, and after the steel wire live time is of a specified duration, wire rope can leave imperceptible damage, make when the dance, cause the wire rope fracture easily, cause the potential safety hazard.
Therefore, how to design a theater steel wire safety detection method becomes a problem which needs to be solved urgently at present.
Disclosure of Invention
The invention aims to provide a theater steel wire safety detection method which is convenient to detect, high in accuracy, free of steel wire disassembly, capable of performing safety detection at any time and less affected by external factors.
In order to achieve the purpose, the invention is realized by adopting the following technical scheme:
a theater steel wire safety detection method comprises the following steps:
s1: dividing the steel wire into at least one detection unit, and mounting a positioner on the detection unit;
s2: suspending an article of predetermined mass on a steel wire;
s3: sending a beam of sound wave with preset frequency to the direction of the steel wire at intervals of preset time by adopting an ultrasonic generator;
s4: acquiring the position of the positioner in real time, drawing a vibration curve of the positioner, and acquiring a safety coefficient of the steel wire;
s5: judging whether the safety coefficient value of the steel wire is lower than a preset safety threshold value or not, and if so, giving an alarm; otherwise, the process returns to step S4.
Preferably, in step S1, the number of the locators is at least one.
As a preferred aspect of the present invention, when step S1 is performed, each of the positioners is installed at the same corresponding position in different lengths of the sensing unit.
Preferably, in step S1, the locator is a MESTO dither locator with GPS.
In the present invention, it is preferable that the detection units are numbered in order of the direction in which the wire extends when step S1 is executed.
Preferably, in step S2, the predetermined object has a mass equal to the maximum load bearing mass of the performance wire.
As a preferred aspect of the present invention, step S3 is performed to emit sound waves having a frequency ranging from 30KHz to 50 KHz.
As a preferable aspect of the present invention, the predetermined interval time ranges from 0.1S to 500S when step S3 is executed.
Preferably, step S4 specifically includes the following steps:
s41: acquiring the number of a detection unit where a steel wire suspended object is located;
s42: acquiring the real-time position of the positioner, and drawing the average amplitude of a vibration curve;
s43: reading the number of the detection unit where the positioner is located, and dividing the average amplitude by the difference value between the number of the detection unit where the positioner is located and the number of the detection unit where the article is located to obtain the safety coefficient in the unit length of the steel wire;
s44: repeating the steps S42 to S43, and sequentially detecting all the locators;
s45: and (4) performing combined voting on all the locator checking results, wherein the result with the highest score is the steel wire safety coefficient.
As a preferred aspect of the present invention, the predetermined safety threshold is set based on the mass of the wire-suspended item, the position of the wire-suspended item, and the frequency of the emitted sound wave before step S5 is performed.
In the present invention, it is preferable that, when the wire safety coefficient value is lower than the predetermined safety threshold value at the time of executing the step S5, the finally obtained wire safety coefficient value is outputted by an alarm.
The theater steel wire safety detection method has the beneficial effects that: the detection is convenient, the accuracy is high, the steel wire does not need to be disassembled, the safety detection can be carried out at any time, and the influence of external factors is small.
Drawings
Fig. 1 is a schematic flow chart of a theater steel wire safety detection method of the invention.
Detailed Description
The following are specific examples of the present invention and further describe the technical solutions of the present invention, but the present invention is not limited to these examples.
Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that: the relative arrangement of the modules and steps set forth in these embodiments and steps do not limit the scope of the invention unless specifically stated otherwise.
Meanwhile, it should be understood that the flows in the drawings are not merely performed individually for convenience of description, but a plurality of steps are performed alternately with each other.
The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses.
Techniques, methods, and systems known to those of ordinary skill in the relevant art may not be discussed in detail, but are intended to be part of the specification where appropriate.
Along with the increasing abundance of cultural life, people have higher and higher requirements on stage effects in performance activities, stage theaters often need steel wires, particularly during stage performance, in order to present beautiful aerial dances, performers need to fly annularly in the air above stages in a circumferential mode by means of the steel wires, various action performances are performed, or shooting instruments, lamplights and the like perform stage shooting and stage arrangement to reasonable places by means of steel wire displacement, but because the performers or instruments suspend in the air for movement, the personnel in the theaters are numerous, the safety requirements on the steel wires are very high, and after the steel wires are used for a long time, the steel wires can leave imperceptible damage, so that the steel wires are easy to break when dancing, and potential safety hazards are caused.
Example one
As shown in fig. 1, which is only one embodiment of the present invention, the present invention provides a theater steel wire safety detection method, which includes the following steps:
s1: dividing the steel wire into at least one detection unit, and mounting a positioner on the detection unit;
first, the steel wire is divided into at least one detecting unit, and preferably, the steel wire is divided into detecting units having the same length.
Further, when step S1 is executed, the number of locators is at least one, and actually one locator is mounted on each detecting unit. And each locator is installed in the same direction or unified position that corresponds in different detecting element length, and every locator is all installed in different detecting element and all installs the upper end or the middle at different detecting element promptly.
When making things convenient for the later stage to draw locator vibration curve like this, every locator all has the same position for the detecting element, reduces the error that detects.
S2: suspending an article of predetermined mass on a steel wire;
in fact, the steel wire of theater installation need not to dismantle and gets off to detect, can directly carry predetermined article on the steel wire that the installation finishes, of course, need guarantee no longer that other article interfere on the steel wire, and the article of carrying on the steel wire is controllable like this, and the testing result accuracy is higher.
Of course, the articles mounted on the steel wire can be mounted at the end part of the steel wire, and can also be mounted at any position in the middle of the steel wire.
S3: sending a beam of sound wave with preset frequency to the direction of the steel wire at intervals of preset time by adopting an ultrasonic generator;
after hanging predetermined article on the steel wire, the steel wire is taut straight, adopts supersonic generator to send a branch of sound wave to the steel wire direction this moment, and the unique high-frequency oscillation of ultrasonic wave can drive the steel wire vibration, also is that the locator can take place periodic rocking promptly.
Here, the locator is a MESTO dither locator with GPS, and shaking data of the locator such as amplitude, oscillation period, and oscillation attenuation value can be acquired according to the GPS.
S4: acquiring the position of the positioner in real time, drawing a vibration curve of the positioner, and acquiring a safety coefficient of the steel wire;
according to the position and the parameters of the positioner, a vibration curve of the positioner is drawn, the amplitude and the oscillation period are actually calculated according to the distance between the positioner and a mounted object, and the tension and the elastic variable of the detection unit of the steel wire under tension are obtained.
Actually, the detection unit coefficients obtained by the position and parameters of one positioner are not enough to indicate the safety factor of the whole steel wire, and all positioners should be subjected to parameter acquisition to obtain multiple groups of detection unit coefficients, and the parameters are integrated to obtain the safety factor of the whole steel wire.
S5: judging whether the safety coefficient value of the steel wire is lower than a preset safety threshold value or not, and if so, giving an alarm; otherwise, the process returns to step S4.
In practice, a predetermined safety threshold is set based on the quality of the wire-suspended item, the position of the wire-suspended item and the frequency of the emitted sound waves before step S5 is performed.
Comparing the safety coefficient of the steel wire obtained by calculation, if the safety coefficient is not lower than a preset safety threshold, the steel wire is safe and qualified, and can still be used; otherwise, the steel wire is damaged with high risk, the steel wire needs to be replaced, and an alarm is sent to inform relevant workers of replacement.
The theater steel wire safety detection method is convenient to detect, high in accuracy, free of steel wire disassembly, capable of performing safety detection at any time except performance time, capable of calculating the safety coefficients of the detection units at different positions on the steel wire under the condition that other controllable variables are the same, and small in influence of external factors.
Example two
Still as shown in fig. 1, still one embodiment of the present invention is provided, in order to make the detection of the theater steel wire safety detection method of the present invention more stable and obtain higher detection accuracy, the present invention further has the following designs:
first, when step S1 is executed, the detection units are numbered in order in the direction in which the wire extends. For example, the numbers 1, 2, 3 are numbered in order from the left end to the right end of the steel wire.
Then, step S4 specifically includes the following steps:
s41: acquiring the number of a detection unit where a steel wire suspended object is located;
s42: acquiring the real-time position of the positioner, and drawing the average amplitude of a vibration curve;
s43: reading the number of the detection unit where the positioner is located, and dividing the average amplitude by the difference value between the number of the detection unit where the positioner is located and the number of the detection unit where the article is located to obtain the safety coefficient in the unit length of the steel wire;
s44: repeating the steps S42 to S43, and sequentially detecting all the locators;
s45: and (4) performing combined voting on all the locator checking results, wherein the result with the highest score is the steel wire safety coefficient.
When step S5 is executed, if the wire safety coefficient value is lower than the predetermined safety threshold value, the finally obtained wire safety coefficient value is output by an alarm. The data acquisition and analysis of the workers are facilitated, and the maintenance and the replacement are convenient.
It should be noted that:
when step S2 is executed, the mass of the predetermined article is the maximum load bearing mass of the performance wire. Generally speaking, the safety factor under the condition of simulating the maximum mounting threshold of the steel wire is more effective and stable in the obtained result.
And, when step S3 is executed, emitting sound wave with frequency range of 30KHz to 50 KHz. The sound wave frequency is selected according to the diameter of the steel wire and the function of the steel wire, for example, the optimal sound wave frequency for detecting the suspension wire with the diameter of 44mm should be 38.75 KHz, the initial vibration of the steel wire is faster, and the vibration period is more stable.
Finally, when step S3 is executed, the predetermined interval time ranges from 0.1S to 500S. In fact, it is ensured that the wire emits sound waves again after the vibrations have stopped under the drive of the last sound wave. Thus, the accuracy of polishing is higher.
The theater steel wire safety detection method is convenient to detect, high in accuracy, free of steel wire disassembly, capable of performing safety detection at any time and small in influence of external factors.
While certain specific embodiments of the present invention have been described in detail by way of illustration, it will be understood by those skilled in the art that the foregoing is illustrative only and is not limiting of the scope of the invention, as various modifications or additions may be made to the specific embodiments described and substituted in a similar manner by those skilled in the art without departing from the scope of the invention as defined in the appending claims. It should be understood by those skilled in the art that any modifications, equivalents, improvements and the like made to the above embodiments in accordance with the technical spirit of the present invention are included in the scope of the present invention.
Claims (8)
1. A theater steel wire safety detection method is characterized by comprising the following steps:
s1: dividing the steel wire into at least one detection unit, mounting a positioner on the detection unit, and numbering the detection units in sequence according to the extension direction of the steel wire;
s2: suspending an article of predetermined mass on a steel wire;
s3: sending a beam of sound wave with preset frequency to the direction of the steel wire at intervals of preset time by adopting an ultrasonic generator;
s4: acquiring the number of a detection unit where a steel wire suspended article is located, acquiring the real-time position of a positioner, drawing the average amplitude of a vibration curve of the positioner, reading the number of the detection unit where the positioner is located, dividing the average amplitude by the difference value between the number of the detection unit where the positioner is located and the number of the detection unit where the article is located, acquiring the safety coefficient of the steel wire in unit length, repeatedly executing the steps, sequentially detecting all the positioners, performing combined voting on the detection results of all the positioners, and obtaining the highest scoring result, namely the safety coefficient of the steel wire;
s5: judging whether the safety coefficient value of the steel wire is lower than a preset safety threshold value or not, and if so, giving an alarm; otherwise, the process returns to step S4.
2. The theater steel wire safety detection method according to claim 1, characterized in that:
in step S1, the number of locators is at least one.
3. The theater steel wire safety detection method according to claim 1, characterized in that:
in step S1, the locator is a MESTO dither locator with GPS.
4. The theater steel wire safety detection method according to claim 1, characterized in that:
when step S2 is executed, the mass of the predetermined article is the maximum load bearing mass of the performance wire.
5. The theater steel wire safety detection method according to claim 1, characterized in that:
in step S3, a sound wave is emitted in a frequency range of 30KHz to 50 KHz.
6. The theater steel wire safety detection method according to claim 1, characterized in that:
when step S3 is executed, the predetermined interval time ranges from 0.1S to 500S.
7. The theater steel wire safety detection method according to claim 1, characterized in that:
before step S5 is performed, a predetermined safety threshold is set based on the mass of the wire-suspended item, the position of the wire-suspended item, and the frequency of the emitted sound waves.
8. The theater steel wire safety detection method according to claim 1, characterized in that:
when step S5 is executed, if the wire safety coefficient value is lower than the predetermined safety threshold, the finally obtained wire safety coefficient value is output by an alarm.
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| NL7502188A (en) * | 1975-02-24 | 1976-08-26 | Rucker Co | Cable stress monitoring system - for construction and underwater drilling, uses electromagnet with pole near cable and coil forming part of circuit |
| CN1046388A (en) * | 1989-04-13 | 1990-10-24 | 浙江省建筑科学研究所 | Gentle rope component detection method of wire tensioning force and detector |
| CN103454171B (en) * | 2012-05-30 | 2016-07-13 | 海洋王（东莞）照明科技有限公司 | Friction durability tested device and method by a kind of steel wire rope |
| CN104155044A (en) * | 2014-07-14 | 2014-11-19 | 华南理工大学 | Measuring device and measuring method for cable force of cable-stayed bridge based on mobile terminal |
| CN104457956B (en) * | 2014-12-08 | 2017-12-15 | 湘潭天鸿检测科技有限公司 | Fundamental frequency identification method in a kind of Cable power detection |
| JP6545384B2 (en) * | 2016-07-05 | 2019-07-17 | 三菱電機ビルテクノサービス株式会社 | Elevator rope monitoring device |
| CN107202661B (en) * | 2017-07-27 | 2019-10-25 | 哈尔滨开博科技有限公司 | A kind of inhaul cable vibration frequency rank recognition methods based on pseudo- greatest common divisor |
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Address after: 310000 room 1702, win win Weihai International Commercial Affairs Building, 998 Binhe Road, Changhe street, Hangzhou, Zhejiang, Binjiang District Patentee after: Hangzhou Youbang Culture Technology Co.,Ltd. Address before: Room 1702, Zhongying international business building, 998 Binhe Road, Changhe street, Binjiang District, Hangzhou City, Zhejiang Province, 310051 Patentee before: HANGZHOU YOUBANG PERFORMING ARTS EQUIPMENT Co.,Ltd. |