JP3841270B2 - How to identify the cause of squealing - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a method for identifying the cause of a house squeaking sound called house ringing.
[0002]
[Prior art]
One of the problems with homes is squealing. This squealing occurs when members of various parts of the house are displaced or vibrated by the action of external force such as temperature change, drying, and wind.
[0003]
To give some examples, for example, when the members constituting the structural enclosure expand and contract due to temperature changes and stress distortion occurs, the frictional sound when the contact surfaces at the joints and intersections between the members shift, and accompanying temperature changes Due to the expansion and contraction of the members, the house was deformed by various noises generated in the interior ceiling, outer wall, makeup difference, balcony, glass door and window frame, eaves, etc., sound when wood was broken by drying, and wind force There is a sound that shifts the intersection of braces.
[0004]
House noise usually occurs in some form, but if the frequency of occurrence increases, there is a resonance material, the radiation efficiency is good and amplified, and the sound pressure level exceeds a certain level, Some residents were worried that they were structurally flawed.
[0005]
[Problems to be solved by the invention]
However, at present, no method or apparatus has been established for identifying which part of the house is causing squealing and for what reason. For this reason, it is difficult to respond appropriately to consultations and complaints about rumbling from residents, and the residents' anxieties could not be resolved. Moreover, it was not possible to take appropriate measures to reduce the occurrence frequency and sound pressure level of squealing.
[0006]
Therefore, in view of the above, the present invention is a method for identifying the cause of squealing in order to eliminate the anxiety about squealing of residents and to take measures to reduce the frequency of occurrence of squealing and the sound pressure level. For the purpose of provision.
[0007]
[Means for Solving the Problems]
In order to solve the above-mentioned problem, the cause identification method of the house noise according to the present invention predicts the first detection unit for detecting the state of vibration or distortion of the member and the microphone that captures the house noise as the source of the house noise. In addition to recording the detection data of these first and second detectors in time series, the second detector for detecting the cause of the occurrence of squealing such as temperature and humidity is arranged in a place to be The sound captured by the microphone is recorded in time series, and the recorded detection data and the recorded sound generation state are matched. As a 2nd detection part, you may use a wind direction anemometer other than a temperature sensor and a humidity sensor.
[0008]
In addition, a vibration sensor that detects the vibration of the member, a temperature sensor that detects the surface temperature of the member, and a microphone that captures the ringing of the house are arranged at a location that is predicted to be the source of the ringing of the house, and the vibration sensor and the temperature sensor are detected. In addition to recording data in time series, the sound captured by the microphone is recorded in time series, and the recorded detection data and the recorded sound generation state are matched.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 shows a measuring device used to identify the cause of squealing. This measuring device includes a first detection unit (1) for detecting the state of a member, a second detection unit (2) for detecting the cause of the squealing, and a microphone (3) for capturing the squealing. ing.
[0010]
As the first detection unit (1), a vibration sensor (vibration pickup) for detecting the vibration of the member is used. This vibration pickup (1) is connected to a sound level meter (6) through a preamplifier (5). A level recorder (7) as a recording unit is connected to the AC output side of the sound level meter (6), and detection data from the vibration pickup (1), that is, vibration level data is recorded in time series. It is like that. A controller (8) is connected to the DC output side of the sound level meter (6).
[0011]
In addition to the vibration pickup (1), a strain gauge that detects the stress strain of the member may be used as the first detection unit (1). In this case, the strain gauge is connected to a data logger as a recording unit, and the detection data from the strain gauge is recorded in time series.
[0012]
As the second detector (2), a temperature sensor (10) for detecting the surface temperature of the member, a humidity sensor (11) for detecting the humidity around the member, and an anemometer (12) are used. . The temperature sensor (10) and the humidity sensor (11) are, for example, a type using a thermocouple.
[0013]
The temperature sensor (10), humidity sensor (11), and wind direction anemometer (12) are connected to a data logger (13) as a recording unit. Therefore, detection data from the temperature sensor (10), the humidity sensor (11), and the anemometer (12) are recorded in time series by the data logger (13).
[0014]
The microphone (3) is connected to a digital audio tape recorder (15) as a recording unit. Therefore, the sound of the household noise captured by the microphone (3) is recorded in time series by the tape recorder (15). The tape recorder (15) is connected to the controller (8), and the controller (8) sends a start signal to the tape recorder (15) only when the vibration pickup (1) detects a vibration level above a certain level. By sending it, it is possible to control the recording of the squealing. By this, the recording is performed only when the squealing is predicted, and the recording time can be shortened.
[0015]
Next, a method for identifying the cause of squealing using the measuring apparatus having the above configuration will be described. First, the source of squealing is estimated by hearing from residents. Then, as shown in FIG. 2, the vibration sensor (1), the temperature sensor (10), the humidity sensor (11), and the microphone (3) are attached to the members at the locations where the generation of the squeal is predicted. Further, an anemometer (12) is attached to the roof, for example.
[0016]
When such an arrangement is completed, detection of temperature, humidity, vibration and squealing noise is started at each location, wind direction and wind speed are also detected at the same time, and these detection data are recorded in chronological order, and squealing is also chronologically detected. To record. Such measurement is performed continuously for several hours, preferably 24 hours.
[0017]
When the measurement is completed, the detection data recorded at each location and the recorded sound are processed and output as a graph or a table for each location. For example, the level recorder (7) outputs a graph as shown in FIG. 3 for vibration level data, and the temperature data and humidity data are processed by a personal computer (not shown) connected to the data logger (13). 4 and FIG. 5 are output, and the recorded sound is processed by a personal computer (not shown) connected to the digital audio tape recorder (15) to output the graph as shown in FIG. To do.
[0018]
Then, using these graphs, the various detection data recorded and the state of the recorded sound are matched to identify at which location and for what reason the squeal occurred. For example, referring to the graphs of FIGS. 3 to 6, the vibration level changes greatly corresponding to the rise and fall of the temperature, and the sound pressure level of the house cry increases with the change in the vibration level. It turns out that these have a correlation. Therefore, at the measurement location where the graphs of FIGS. 3 to 6 are obtained, it is possible to specify that squealing is occurring along with expansion and contraction due to temperature change of the member.
[0019]
This is just an example.For example, if there is a correlation between humidity change, vibration level, and sound pressure level, it is possible to identify the occurrence of squealing as the member dries due to humidity change, and wind direction wind speed and vibration If there is a correlation between the level and the sound pressure level, it is possible to specify that squealing is occurring as the member is deformed by the wind load. Furthermore, if a strain gauge is attached and detection data obtained from the strain gauge, that is, the stress strain state of the member is taken into consideration, the cause can be identified more precisely.
[0020]
In addition, this invention is not limited to the said embodiment, Of course, many corrections and changes can be added to the said embodiment within the scope of this invention.
[0021]
【The invention's effect】
As is clear from the above description, according to the present invention, at the location that is predicted to be the source of squealing, the squealing is recorded, and at the same time, the state of vibration and distortion of the member, and further the cause of squealing are detected. Since these are matched, it is possible to specify in which part of the house the cause of the ringing is caused by what factors. As a result, it is possible to eliminate anxiety about squealing by the resident of the house, and it becomes easy to take appropriate measures for reducing the occurrence frequency and sound pressure level of squealing based on the specific result.
[Brief description of the drawings]
FIG. 1 is a configuration diagram of a measuring device used in a method for identifying the cause of home crying according to an embodiment of the present invention.
FIG. 2 is a diagram illustrating an arrangement state of sensors and microphones at various locations in a house.
FIG. 3 is a graph showing vibration level data.
FIG. 4 is a graph showing temperature data.
FIG. 5 is a graph showing humidity data.
FIG. 6 is a graph showing the sound pressure level of home squealing.
[Explanation of symbols]
(1) First detector (vibration sensor)
(2) Second detector
(3) Microphone
(10) Temperature sensor
(11) Humidity sensor
(12) Anemometer

Claims (3)

The first detector for detecting the state of vibration, distortion, etc. of the member, and the microphone that captures the squealing are arranged at the location that is predicted to be the squealing source. A second detection unit for detection is provided, and the detection data of the first and second detection units are recorded in time series, and the sound captured by the microphone is recorded in time series, and these recorded detections are recorded. A method for identifying the cause of home crying, characterized in that the data and recorded sound generation conditions are matched. 2. The method for identifying the cause of squealing as claimed in claim 1, wherein an anemometer is used as the second detector in addition to the temperature sensor and the humidity sensor. A vibration sensor that detects the vibration of the member, a temperature sensor that detects the surface temperature of the member, and a microphone that captures the ringing of the house are arranged at a place that is predicted to be the source of the ringing of the house. Identifying the cause of home ringing, characterized by recording time-sequentially and recording the sound captured by the microphone in time-sequentially, and matching the recorded detection data with the recorded sound generation status Method.

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