CN110806262B - Multi-channel strain analysis test system and test method thereof - Google Patents
Multi-channel strain analysis test system and test method thereof Download PDFInfo
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- CN110806262B CN110806262B CN201911147126.0A CN201911147126A CN110806262B CN 110806262 B CN110806262 B CN 110806262B CN 201911147126 A CN201911147126 A CN 201911147126A CN 110806262 B CN110806262 B CN 110806262B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01H—MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
- G01H17/00—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves, not provided for in the preceding groups
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
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Abstract
The invention discloses a multi-channel strain analysis test system and a test method thereof. The system belongs to the technical field of multi-noise source transmission path searching, can detect a noise source transmission path emitted by a plurality of noise sources, and can introduce a part of noise to a place far away from a region S where the noise is small, and comprises a sound guide tube, a sound collecting loudspeaker cover, a shell and a laser lamp, wherein a data processing module and a controller are respectively arranged in the shell, a support is arranged on the upper surface of the shell, and a first universal rotating mechanism is arranged on the support; five sounding pipes are arranged on the first universal rotating mechanism, the lengths of the five sounding pipes are equal, the diameters of pipe holes are equal, and the pipe center lines are parallel; the front end surfaces of the five sounding pipes are also located in the same vertical plane; a noise sensor is arranged in each sounding pipe, the laser lamp is also arranged in the fifth sounding pipe, and the center line of light emitted by the laser lamp and the pipe center line of the fifth sounding pipe are on the same straight line.
Description
Technical Field
The invention relates to the technical field of multi-noise source transmission path searching, in particular to a multi-channel strain analysis testing system and a testing method thereof.
Background
In workshops, a plurality of machine tables emit noise at the same time, but sometimes a region S with small noise is needed outside the workshops and inside the workshops, the current approach is generally to make the region with small noise into a soundproof room by using a soundproof board, so that the cost for building the soundproof room is high, and the occupied space of the soundproof board for the soundproof room is large. If a multi-noise-source transmission path is found, noise at the region S can be largely shielded as long as a soundproof board is mounted on this multi-noise-source transmission path.
Disclosure of Invention
The invention provides a multi-channel strain analysis test system and a test method thereof, which are simple in structure and convenient to use, can detect a noise source transmission path emitted by multiple noise sources and can introduce a part of noise to a place S far away from a region needing small noise.
The technical problems are solved by the following technical proposal:
the multichannel strain analysis testing system comprises a sound guide tube, a sound collecting horn cover, a shell and a laser lamp, wherein a data processing module and a controller are respectively arranged in the shell, a support is arranged on the upper surface of the shell, and a first universal rotating mechanism is arranged on the support;
five sounding pipes are arranged on the first universal rotating mechanism, the lengths of the five sounding pipes are equal, the diameters of pipe holes are equal, and the pipe center lines are parallel; the front end surfaces of the five sounding pipes are also located in the same vertical plane; the first sounding pipe of the five sounding pipes is arranged right above the fifth sounding pipe, and the second sounding pipe is arranged right below the fifth sounding pipe; the third sounding pipe is arranged right and left of the fifth sounding pipe, and the fourth sounding pipe is arranged right and left of the fifth sounding pipe; the first sounding pipe and the second sounding pipe are arranged symmetrically up and down relative to the fifth sounding pipe, and the third sounding pipe and the fourth sounding pipe are arranged symmetrically left and right relative to the fifth sounding pipe;
a noise sensor is respectively arranged in the fifth sounding pipe, the first sounding pipe, the second sounding pipe, the third sounding pipe and the fourth sounding pipe, the laser lamp is arranged in the fifth sounding pipe, and the central line of light emitted by the laser lamp and the pipe center line of the fifth sounding pipe are on the same straight line;
the control end of the first universal rotating mechanism, the control end of the laser lamp, the data processing module and each noise sensor are respectively connected with the controller.
The sound collecting horn cover is connected to one end of the sound guide pipe in a butt joint mode, and a sound insulation film is arranged on the inner surface of the sound guide pipe.
In use, the multi-channel strain analysis testing system is first placed in a desired region S of low noise.
Then simultaneously starting the noise sensors in the first sound measuring tube, the second sound measuring tube, the third sound measuring tube and the fourth sound measuring tube, and uploading the noise information detected by each noise sensor at the same moment to the controller;
then comparing the noise intensity of each piece of uploaded noise information by a data processing module, and if the noise intensity A1 detected by the noise sensor in the first sound measuring tube is larger or smaller than the noise intensity A2 detected by the noise sensor in the second sound measuring tube, controlling the first universal rotating mechanism to rotate to the right or to rotate to the left until the noise intensity detected by the noise sensor in the first sound measuring tube is equal to the noise intensity detected by the noise sensor in the second sound measuring tube by the controller; similarly, if the noise intensity A3 detected by the noise sensor in the third sound measuring tube is greater than or less than the noise intensity A4 detected by the noise sensor in the fourth sound measuring tube, the controller controls the first universal rotating mechanism to rotate to the right or to rotate to the left until the noise intensity detected by the noise sensor in the third sound measuring tube is equal to the noise intensity detected by the noise sensor in the fourth sound measuring tube;
stopping rotation of the first universal rotation mechanism when a1=a2=a3=a4; then, a noise sensor in a fifth sounding pipe is started to detect the noise intensity A5, and the laser lamp is turned on at the same time, so that a path irradiated by light emitted by the laser lamp is a path which needs to be passed when the multi-noise source is transmitted by the multi-noise source, and a multi-noise source transmission path is found.
Then the sound collecting horn cover is arranged on a noise source collecting transmission path of the multi-noise source, the other end of the sound guide tube is far away from the region S with small required noise, and the pipe orifice at the other end of the sound guide tube is arranged back to the region S with small required noise, so that part of noise is introduced into the region S with small required noise through the sound guide tube, and the noise at the region S meets the set requirement.
The noise at the region S can be largely shielded by providing a soundproof plate or a sound deadening plate on the noise source-closing transmission path of the multiple noise sources. This scheme need not to separate regional S department into the sound insulation room with the acoustic celotex board, has reduced the use of acoustic celotex board, just also reduced the occupation area of acoustic celotex board and reduced the cost of sound insulation processing, simple structure, convenient to use can detect out the synthetic noise sound source transmission path that many noise sources sent to can introduce the regional S department that keeps away from needs small in noise with some noise.
Preferably, the multi-channel strain analysis testing system further comprises a noise reflecting cover, wherein the noise reflecting cover is arranged at the lateral front or the right front of the cover opening of the sound focusing loudspeaker cover.
Preferably, a sound insulation plate is arranged at the right end opening of each sound measurement tube, and a sound elimination layer is further arranged on the inner tube wall of each sound measurement tube.
The noise elimination layer reduces the echo of noise in the sounding pipe, and the reliability is good.
A wireless module connected with the controller is also arranged in the shell.
The wireless module can enable the multi-channel strain analysis testing system to be in wireless connection with an external computer or an intelligent terminal, so that the control and the management of the multi-channel strain analysis testing system are facilitated.
The testing method comprises a multi-noise source combined noise source transmission path searching method, wherein the multi-noise source combined noise source transmission path searching method comprises the following implementation processes:
the multi-channel strain analysis testing system is first placed at the desired low noise region S.
Then simultaneously starting the noise sensors in the first sound measuring tube, the second sound measuring tube, the third sound measuring tube and the fourth sound measuring tube, and uploading the noise information detected by each noise sensor at the same moment to the controller;
then comparing the noise intensity of each piece of uploaded noise information by a data processing module, and if the noise intensity A1 detected by the noise sensor in the first sound measuring tube is larger or smaller than the noise intensity A2 detected by the noise sensor in the second sound measuring tube, controlling the first universal rotating mechanism to rotate to the right or to rotate to the left until the noise intensity detected by the noise sensor in the first sound measuring tube is equal to the noise intensity detected by the noise sensor in the second sound measuring tube by the controller; similarly, if the noise intensity A3 detected by the noise sensor in the third sound measuring tube is greater than or less than the noise intensity A4 detected by the noise sensor in the fourth sound measuring tube, the controller controls the first universal rotating mechanism to rotate to the right or to rotate to the left until the noise intensity detected by the noise sensor in the third sound measuring tube is equal to the noise intensity detected by the noise sensor in the fourth sound measuring tube;
stopping rotation of the first universal rotation mechanism when a1=a2=a3=a4; then, a noise sensor in a fifth sounding pipe is started to detect the noise intensity A5, and the laser lamp is turned on at the same time, so that a path irradiated by light emitted by the laser lamp is a path which needs to be passed when the multi-noise source is transmitted by the multi-noise source, and a multi-noise source transmission path is found.
Then the sound collecting horn cover is arranged on a noise source collecting transmission path of the multi-noise source, the other end of the sound guide tube is far away from the region S with small required noise, and the pipe orifice at the other end of the sound guide tube is arranged back to the region S with small required noise, so that part of noise is introduced into the region S with small required noise through the sound guide tube, and the noise at the region S meets the set requirement.
The invention can achieve the following effects:
according to the invention, the area S is not required to be separated into the soundproof room by using the soundproof board, so that the use of the soundproof board is reduced, the occupied area of the soundproof board is reduced, the cost of soundproof treatment is reduced, the structure is simple, the use is convenient, the combined noise sound source transmission path emitted by multiple noise sources can be detected, and a part of noise can be introduced into the area S far away from the area S needing small noise.
Drawings
Fig. 1 is a schematic diagram of a connection structure according to the present invention.
Fig. 2 is a schematic cross-sectional connection structure of a fifth sounding pipe according to the present invention.
Fig. 3 is a schematic diagram of a connection structure in a use state when a sound collecting speaker cover is not arranged on a noise source transmission path of the multi-noise source.
Fig. 4 is a schematic diagram of a connection structure of a sound collecting speaker cover in a multi-noise source transmission path according to the present invention.
Detailed Description
The invention is further described below with reference to the drawings and examples.
Embodiments of the multi-channel strain analysis testing system are shown in FIGS. 1-3. The device comprises a sound guide tube 27, a sound collecting loudspeaker cover 26, a noise reflecting cover 25, a shell 2 and a laser lamp 12, wherein a wireless module, a data processing module 3 and a controller 4 are respectively arranged in the shell, a bracket 1 is arranged on the upper surface of the shell, and a first universal rotating mechanism 8 is arranged on the bracket;
five sounding pipes are arranged on the first universal rotating mechanism, the lengths of the five sounding pipes are equal, the diameters of pipe holes are equal, and the pipe center lines are parallel; the front end surfaces of the five sounding pipes are also located in the same vertical plane; the first sounding pipe 13 of the five sounding pipes is arranged right above the fifth sounding pipe 11, and the second sounding pipe 7 is arranged right below the fifth sounding pipe; the third sounding pipe 15 is arranged right and left of the fifth sounding pipe, and the fourth sounding pipe 10 is arranged right and left of the fifth sounding pipe; the first sounding pipe and the second sounding pipe are arranged symmetrically up and down relative to the fifth sounding pipe, and the third sounding pipe and the fourth sounding pipe are arranged symmetrically left and right relative to the fifth sounding pipe;
a noise sensor 17 is arranged in the fifth sound measuring tube, a noise sensor 14 is arranged in the first sound measuring tube, a noise sensor 6 is arranged in the second sound measuring tube, a noise sensor 16 is arranged in the third sound measuring tube, a noise sensor 9 is arranged in the fourth sound measuring tube, a laser lamp is arranged in the fifth sound measuring tube, and the central line of light 18 emitted by the laser lamp and the tube center line of the fifth sound measuring tube fall on the same straight line;
the control end of the first universal rotating mechanism, the wireless module, the control end of the laser lamp, the data processing module and each noise sensor are respectively connected with the controller.
The sound collecting horn cover is connected to one end of the sound guide pipe in a butt joint mode, and a sound insulation film is arranged on the inner surface of the sound guide pipe. The noise reflecting cover is arranged at the side front or the right front of the cover opening of the sound collecting loudspeaker cover.
The fifth noise sensor in the sounding pipe measures the noise intensity A5 of the noise source of the multi-noise source.
A wireless module 5 connected with the controller is also arranged in the shell. A wireless module connected with the controller is also arranged in the shell. The wireless module can enable the multi-channel strain analysis testing system to be in wireless connection with an external computer or an intelligent terminal, so that the control and the management of the multi-channel strain analysis testing system are facilitated.
The right end opening of each sounding pipe is provided with a sound insulation plate 22, and the inner pipe wall of each sounding pipe is also provided with a sound elimination layer 23. The noise elimination layer reduces the echo of noise in the sounding pipe, and the reliability is good.
According to the testing method of the multi-channel strain analysis testing system, the testing method comprises a multi-noise-source combined noise source transmission path searching method, and the multi-noise-source combined noise source transmission path searching method comprises the following implementation process:
in use, the multi-channel strain analysis testing system is first placed in a desired region S of low noise.
Then simultaneously starting the noise sensors in the first sound measuring tube, the second sound measuring tube, the third sound measuring tube and the fourth sound measuring tube, and uploading the noise information detected by each noise sensor at the same moment to the controller;
then comparing the noise intensity of each piece of uploaded noise information by a data processing module, and if the noise intensity A1 detected by the noise sensor in the first sound measuring tube is larger or smaller than the noise intensity A2 detected by the noise sensor in the second sound measuring tube, controlling the first universal rotating mechanism to rotate to the right or to rotate to the left until the noise intensity detected by the noise sensor in the first sound measuring tube is equal to the noise intensity detected by the noise sensor in the second sound measuring tube by the controller; similarly, if the noise intensity A3 detected by the noise sensor in the third sound measuring tube is greater than or less than the noise intensity A4 detected by the noise sensor in the fourth sound measuring tube, the controller controls the first universal rotating mechanism to rotate to the right or to rotate to the left until the noise intensity detected by the noise sensor in the third sound measuring tube is equal to the noise intensity detected by the noise sensor in the fourth sound measuring tube;
stopping rotation of the first universal rotation mechanism when a1=a2=a3=a4; then, a noise sensor in the fifth sounding pipe is started to detect the noise intensity A5, and the laser lamp is turned on at the same time, so that a section of path irradiated by the light 18 emitted by the laser lamp is the path 24 which needs to be passed when the noise source of the multiple noise sources 20 transmits, and a noise source transmission path of the multiple noise sources is found. The noise-dividing paths 19 of the multiple noise sources 20 are combined to form a path 24 which the combined noise source needs to pass when transmitting.
After the noise source-closing transmission path 24 of the multi-noise source is found, the noise at the region S can be largely shielded by providing the soundproof plate 21 or the sound-deadening plate on the noise source-closing transmission path 24 of the multi-noise source. The area S in this embodiment is where the multi-channel strain analysis test system is placed.
According to the embodiment, the area S is not required to be divided into the soundproof houses by the soundproof plates, the use of the soundproof plates is reduced, the occupied area of the soundproof plates is reduced, the cost of soundproof treatment is reduced, the structure is simple, the use is convenient, and the combined noise source transmission path emitted by multiple noise sources can be detected.
Then the sound collecting loudspeaker cover is arranged on the noise source collecting transmission path of the multi-noise source, the other end of the sound guide tube is far away from the region S with small required noise, the pipe orifice at the other end of the sound guide tube is arranged back to the region S with small required noise, and the noise reflecting cover is arranged at the side front or the front of the mouth of the sound collecting loudspeaker cover. Therefore, a part of noise is introduced into the region S far away from the region S where the noise is required to be small through the sound guide tube, and the noise in the region S meets the set requirement.
The embodiments of the present invention have been described above with reference to the accompanying drawings, but the embodiments are not limited to the above examples, and various changes or modifications may be made by one of ordinary skill in the art within the scope of the appended claims.
Claims (3)
1. The multichannel strain analysis test system is characterized by comprising a sound guide tube, a sound collecting loudspeaker cover, a shell and a laser lamp, wherein a data processing module and a controller are respectively arranged in the shell, a bracket is arranged on the upper surface of the shell, and a first universal rotating mechanism is arranged on the bracket;
five sounding pipes are arranged on the first universal rotating mechanism, the lengths of the five sounding pipes are equal, the diameters of pipe holes are equal, and the pipe center lines are parallel; the front end surfaces of the five sounding pipes are also located in the same vertical plane; the first sounding pipe of the five sounding pipes is arranged right above the fifth sounding pipe, and the second sounding pipe is arranged right below the fifth sounding pipe; the third sounding pipe is arranged right and left of the fifth sounding pipe, and the fourth sounding pipe is arranged right and left of the fifth sounding pipe; the first sounding pipe and the second sounding pipe are arranged symmetrically up and down relative to the fifth sounding pipe, and the third sounding pipe and the fourth sounding pipe are arranged symmetrically left and right relative to the fifth sounding pipe;
a noise sensor is respectively arranged in the fifth sounding pipe, the first sounding pipe, the second sounding pipe, the third sounding pipe and the fourth sounding pipe, the laser lamp is arranged in the fifth sounding pipe, and the central line of light emitted by the laser lamp and the pipe center line of the fifth sounding pipe are on the same straight line;
the control end of the first universal rotating mechanism, the control end of the laser lamp, the data processing module and each noise sensor are respectively connected with the controller;
the sound collecting loudspeaker cover is connected to one end of the sound guide pipe in a butt joint way, and a sound insulation film is arranged on the inner surface of the sound guide pipe;
the multi-channel strain analysis test system also comprises a noise reflecting cover, wherein the noise reflecting cover is arranged at the front side or right front side of the cover opening of the sound focusing loudspeaker cover;
the right end opening of each sounding pipe is provided with a sound insulation plate, and the inner pipe wall of each sounding pipe is also provided with a sound elimination layer.
2. The multi-channel strain analysis testing system of claim 1, wherein a wireless module is further provided within the housing and coupled to the controller.
3. A test method of a multi-channel strain analysis test system according to claim 1, wherein,
the testing method comprises a multi-noise-source combined noise source transmission path searching method, and the multi-noise-source combined noise source transmission path searching method is realized as follows:
firstly, placing the multi-channel strain analysis testing system at a region S with small required noise;
then, simultaneously starting the noise sensors in the first sound measuring tube, the second sound measuring tube, the third sound measuring tube and the fourth sound measuring tube, and uploading the noise information detected by each noise sensor at the same moment to a controller;
then, the data processing module compares the noise intensity of each piece of uploaded noise information and calculates the vibration frequency, and if the noise intensity A1 detected by the noise sensor in the first sound measuring tube is larger or smaller than the noise intensity A2 detected by the noise sensor in the second sound measuring tube, the controller controls the first universal rotating mechanism to rotate towards the right or towards the left until the noise intensity detected by the noise sensor in the first sound measuring tube is equal to the noise intensity detected by the noise sensor in the second sound measuring tube; similarly, if the noise intensity A3 detected by the noise sensor in the third sound measuring tube is greater than or less than the noise intensity A4 detected by the noise sensor in the fourth sound measuring tube, the controller controls the first universal rotating mechanism to rotate to the right or to rotate to the left until the noise intensity detected by the noise sensor in the third sound measuring tube is equal to the noise intensity detected by the noise sensor in the fourth sound measuring tube;
stopping rotation of the first universal rotation mechanism when a1=a2=a3=a4; then starting a noise sensor in a fifth sounding pipe to detect the noise intensity A5, and simultaneously turning on the laser lamp, wherein a section of path irradiated by light emitted by the laser lamp is a path which needs to be passed when the multi-noise source is transmitted by the multi-noise source, so that a multi-noise source combined noise source transmission path is found;
then the sound collecting horn cover is arranged on a noise source collecting transmission path of the multi-noise source, the other end of the sound guide tube is far away from the region S with small required noise, and the pipe orifice at the other end of the sound guide tube is arranged back to the region S with small required noise, so that part of noise is introduced into the region S with small required noise through the sound guide tube, and the noise at the region S meets the set requirement.
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