CN112051083A - Abnormal sound acquisition device and method - Google Patents
Abnormal sound acquisition device and method Download PDFInfo
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- CN112051083A CN112051083A CN202011040082.4A CN202011040082A CN112051083A CN 112051083 A CN112051083 A CN 112051083A CN 202011040082 A CN202011040082 A CN 202011040082A CN 112051083 A CN112051083 A CN 112051083A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M99/00—Subject matter not provided for in other groups of this subclass
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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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Abstract
The invention discloses a device and a method for collecting abnormal sounds, wherein the device comprises: the mute unit is arranged in the mute box and is provided with a placing groove and a sound collecting structure, the placing groove is arranged at one end of the mute unit, the sound collecting structure is arranged at one end, opposite to the placing groove, in the mute unit, and a sensor is arranged in the mute unit; the driving mechanism is arranged in the mute box and is fixedly connected with one side wall of the mute unit, or the driving mechanism is arranged outside the mute box and is fixedly connected with one side wall of the mute box; and the control mechanism is arranged outside the mute box, is connected with the mute unit and the driving mechanism and is used for controlling the driving mechanism to rotate. The method comprises the following steps: acquiring a first sound signal emitted by a sample device during working; and rotating the sample device to different angles to obtain the sound signals emitted by the sample device at different angles. The whole process is automatically carried out, the acquisition efficiency is high, and the acquisition result has higher accuracy.
Description
Technical Field
The invention relates to the technical field of equipment detection, in particular to a different sound acquisition device and method.
Background
In the field of traditional equipment manufacturing, such as fan or motor production lines, abnormal sound detection and collection of equipment basically depends on human judgment. However, this approach has various disadvantages: firstly, the detection of abnormal sound of equipment is not uniform due to the influence of a test method and a test level of production line testers, and the quality of products flowing into the market is uneven; secondly, the influence of subjective factors of testees is easily detected, and a large amount of repeated and monotonous listening labor is easy to cause auditory fatigue of human ears, so that the subjective judgment of the testees is influenced, and the accuracy of abnormal sound detection is finally influenced; thirdly, the sound collection efficiency is low. Along with the high-speed development of science and technology, the demands for the quality and the quantity of various products in the market are continuously increased, and the requirements for production development can not be met by far by applying the abnormal sound acquisition and detection mode.
Disclosure of Invention
The invention aims to at least solve one technical problem in the prior art, and therefore the invention provides the abnormal sound acquisition device and the abnormal sound acquisition method, which not only have high acquisition efficiency, but also have higher accuracy of acquisition results.
In a first aspect of the present invention, there is provided an abnormal sound collecting device, including: the mute box is used for isolating external noise; the mute unit is arranged in the mute box and is provided with a placing groove and a sound collecting structure, the placing groove is arranged at one end of the mute unit and is used for placing a sample device to be collected, the sound collecting structure is arranged at one end, opposite to the placing groove, in the mute unit, a sensor is arranged in the mute unit and is used for receiving a sound signal and converting the sound signal into an electric signal; the driving mechanism is arranged inside the mute box and fixedly connected with one side wall of the mute unit and is used for driving the mute unit to rotate, or the driving mechanism is arranged outside the mute box and fixedly connected with one side wall of the mute box and is used for driving the mute box to rotate so as to drive the mute unit to rotate; and the control mechanism is arranged outside the mute box, is connected with the mute unit and the driving mechanism and is used for controlling the driving mechanism to rotate.
The abnormal sound collecting device according to the embodiment of the first aspect of the invention has at least the following beneficial effects: the sample device to be collected is placed in the placing groove of the mute unit, and a sensor arranged in the mute unit is responsible for collecting sound signals emitted by the device in the working state and converting the sound signals into electric signals. And whole silence unit sets up in the silence case, can completely cut off external noise for the acquisition result is more accurate. The control mechanism controls the driving mechanism to drive the mute unit to rotate, further drives the to-be-collected device placed in the mute unit to rotate, and receives and analyzes the electric signal transmitted by the sensor so as to analyze whether the sample device is abnormal or not. In the operating condition, the sample device of rotation exposes the problem more easily for the abnormal sound results of gathering are more accurate. The whole process is automatically carried out, so that the acquisition result is more accurate, and the acquisition efficiency is higher.
According to some embodiments of the invention, the sensor comprises a vibration sensor disposed on the placement slot for receiving a second sound signal emitted by the sample device, and a sound sensor disposed on the sound collection structure for receiving a first sound signal emitted by the sample device. The fixed sample device and the vibration sensor that are provided with on the standing groove, at sample device during operation, if there is unusual vibration, the vibration sensor receives the second sound signal, gives control mechanism with the second sound signal transmission, and control mechanism analysis play the second sound signal unusual, accurately judges sample device's unusual. The sound collecting structure at the opposite end of the placing groove is provided with a sound sensor for collecting a first sound signal emitted by the sample device during working, the sound sensor converts the collected sound signal into an electric signal, the electric signal is transmitted to the control mechanism, and the control mechanism receives and analyzes the electric signal transmitted by the sound sensor to accurately judge the abnormity of the sample device.
According to some embodiments of the invention, the sound collecting structure is arranged in a cone-hopper shape, the large end of the sound collecting structure is close to the placement groove, and the small end of the sound collecting structure is fixed in the muting unit. The big end of sound collection structure is close to the sample device, can collect more sound signals, and the tip is fixed to be set up in the silence unit, and the collection of the sound signal of being convenient for is assembled. The mute cone hopper-shaped sound collection structure can better collect the sound signal emitted by the sample device at the opposite end, so that the sound collection result of the sample device is more accurate.
According to some embodiments of the invention, the sound sensor is disposed at a bottom middle position of the small end of the sound collecting structure. The sound sensor is arranged in the middle of the bottom of the small end of the sound collecting structure, so that sound signals are accumulated through a series of reflections of the cone hopper, more sound signals are collected, and the result of the sound collection signals is more accurate.
According to some embodiments of the present invention, the side wall of the mute unit connected to the driving mechanism or the side wall of the mute box connected to the driving mechanism is perpendicular to the surface of the end of the placing groove. The drive mechanism can impart a vertical angular acceleration to the sample device during operation of the sample device, making the sample device more susceptible to potential problems. The detection result is more accurate.
According to some embodiments of the present invention, the mute unit is further provided with a case cover and a connection pipe, the case cover is connected to an outside of a sidewall of the mute unit through the connection pipe, and the case cover and the connection pipe are used for air backflow of the mute unit. The connecting pipe is arranged to connect the side wall of the mute unit and the case cover, so that air flow at the air outlet of the sample device conveniently returns to the air inlet of the sample device along the connecting pipe, the generation of air flow sound is avoided, and the sound collection result of the sample device is more accurate.
According to some embodiments of the invention, four mute units are provided, every two of the four mute units are fixedly connected, one side of the mute unit connected with the connecting pipe is arranged on the opposite side of the connecting surface with other mute units, and the driving mechanism is used for driving the four mute units to rotate.
In a second aspect of the present invention, a method for collecting abnormal sounds is provided, including: acquiring a first sound signal emitted by a sample device during working; and rotating the sample device to different angles to obtain the sound signals emitted by the sample device at different angles.
The abnormal sound collection method according to the embodiment of the second aspect of the invention has at least the following beneficial effects: the sample device can expose the problem at different positions when the sample device works in different postures, and the sound signals of the sample device in different postures can be collected by collecting the sound of the sample device in the normal posture of the working state and rotating the sample device to different angles to collect the sound of the sample device in different postures, so that the sound signals of the sample device can be collected more comprehensively, and the sound signals of the sample device can be collected more comprehensively and accurately.
According to some embodiments of the present invention, rotating the sample device to different angles, and acquiring the sound signals emitted by the sample device at different angles comprises: rotating the sample device to a first angle, and acquiring a second sound signal emitted when the sample device stops rotating; rotating the sample device to a second angle to obtain a third sound signal emitted when the sample device stops rotating; and rotating the sample device to a third angle, and acquiring a fourth sound signal emitted when the sample device stops rotating. When the sample device works in different postures, different parts can be exposed. Through the collection of the sound signals of the sample device under the first angle, the second angle and the third angle, the sound signals of the sample device can be collected more accurately and comprehensively.
According to some embodiments of the present invention, rotating the sample device to different angles to obtain the sound signals emitted by the sample device at different angles comprises: applying an angular acceleration to the sample device in a direction perpendicular to the sample device; and acquiring a fifth sound signal emitted by the sample device in the rotating process. Under the drive of the angular acceleration in the vertical direction, the sample device is easier to expose potential problems, and the collection and detection results of abnormal sounds of the sample device are more accurate.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 is a schematic connection diagram of modules of an abnormal sound collection device according to an embodiment of the present invention;
fig. 2 is a schematic connection diagram of modules of an abnormal sound collecting device according to another embodiment of the present invention;
fig. 3 is a schematic view of a connection structure of a local mute unit and a driving mechanism of the abnormal sound collecting device according to the embodiment of the present invention;
fig. 4 is a schematic view of a connection structure of an integral mute unit and a driving mechanism of the abnormal sound collecting device according to the embodiment of the present invention;
fig. 5 is a schematic view of a connection structure of a plurality of mute units and a driving mechanism of the abnormal sound collecting device according to the embodiment of the present invention;
fig. 6 is a flowchart of an abnormal sound collection method according to an embodiment of the present invention.
Reference numerals:
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
In the description of the present invention, it should be understood that the orientation or positional relationship referred to in the description of the orientation, such as the upper, lower, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, the meaning of a plurality of means is one or more, the meaning of a plurality of means is two or more, and larger, smaller, larger, etc. are understood as excluding the number, and larger, smaller, inner, etc. are understood as including the number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.
In the description of the present invention, unless otherwise explicitly limited, terms such as arrangement, installation, connection and the like should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific contents of the technical solutions. The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the gist of the present invention.
Referring to fig. 1, fig. 2 and fig. 3, in a first aspect of the embodiment of the present invention, an abnormal sound collecting device is provided, including: a mute box 100 for isolating external noise; the mute unit 200 is arranged in the mute box 100, the mute unit 200 is provided with a placing groove 210 and a sound collecting structure 220, the placing groove 210 is arranged at one end of the mute unit 200 and is used for placing a sample device to be collected, the sound collecting structure 220 is arranged at one end of the mute unit 200 opposite to the placing groove 210, a sensor is arranged in the mute unit 200 and is used for receiving a sound signal and converting the sound signal into an electric signal; the driving mechanism 300 is arranged inside the mute box 100 and fixedly connected with one side wall of the mute unit 200, and the driving mechanism 300 is used for driving the mute unit 200 to rotate, or the driving mechanism 300 is arranged outside the mute box 100 and fixedly connected with one side wall of the mute box 100, and the driving mechanism 300 is used for driving the sound box 100 to rotate so as to drive the mute unit 200 to rotate; and a control mechanism 400 disposed outside the mute case 100, connected to the mute unit 200 and the driving mechanism 300, and controlling the rotation of the driving mechanism 300.
The driving mechanism 300 is connected with the mute box 100 to control the mute box 100 to rotate, so that noise produced by the driving mechanism 300 can be better shielded; the driving mechanism 300 is disposed inside the mute case 100 and connected to the mute unit 200, which is relatively easy to implement, but is easy to make noise, and has a certain interference effect on the collection of the sound signal of the sample device, but relatively accurate sound information can be obtained by processing the middle noise signal of the sound information by the control mechanism 400.
Specifically, in one aspect, control mechanism 400 controls the rotation of drive mechanism 300, and thus the attitude of the sample device. The sound signals emitted by the sample devices in different postures are different, so that the collected sound signals of the sample devices are more comprehensive and accurate. On the other hand, the control mechanism 400 controls the rotational speed of the drive mechanism 300, which more easily exposes potential problems when the sample device is subjected to a vertical angular acceleration. The control mechanism 400 can also receive and analyze the sound signals transmitted by the sensor, and finally detect whether the sample device has abnormal sound to judge whether the sample device is bad, so that the collection of the sound signals of the sample device is more accurate and comprehensive, and the abnormal sound detection result is more reliable.
Further, the placement groove 210 is configured as a position-limiting structure for placing and fixing the sample device.
The sample device is placed in the placing groove 210 of the mute unit 200, and the sensor arranged on the sound collecting structure 220 is responsible for collecting the sound signal emitted by the device in the working state and converting the sound signal into an electric signal. The whole mute unit 200 is arranged in the mute box 100, so that external noise can be isolated, and the acquisition result is more accurate. The control mechanism 400 controls the driving mechanism 300 to drive the mute unit 200 to rotate, and further drives the sample device placed in the mute unit 200 to rotate, and the control mechanism 400 receives and analyzes the electric signal transmitted by the sensor to analyze whether the sample device is abnormal. In the operating condition, the sample device of rotation exposes the problem more easily for the abnormal sound results of gathering are more accurate. The whole process is automatically carried out, so that the acquisition result is more accurate, and the acquisition efficiency is higher.
In some embodiments of the present invention, the sensors include a vibration sensor 240 and a sound sensor 230, the vibration sensor 240 is disposed on the placement groove 210, the vibration sensor 240 is configured to receive a second sound signal emitted from the sample device, and the sound sensor 230 is disposed on the sound collection structure 220 and configured to receive a sound signal emitted from the sample device. The sample device and the vibration sensor 240 are fixedly arranged on the placing groove 210, when the sample device works, if abnormal vibration exists, the vibration sensor 240 receives the second sound signal and transmits the second sound signal to the control mechanism 400, and the control mechanism 400 analyzes the abnormality of the second sound signal and accurately judges the abnormality of the sample device. The sound sensor 230 is arranged on the sound collecting structure 220 at the opposite end of the placement groove 210 and used for collecting a first sound signal emitted by the sample device during working, the sound sensor 230 converts the collected first sound signal into an electric signal and transmits the electric signal to the control mechanism 400, and the control mechanism 400 receives and analyzes the electric signal transmitted by the sound sensor 230 and accurately judges the abnormality of the sample device. Specifically, the second sound signal is a vibration sound signal.
Further, the abnormal sound collection device also comprises a current and voltage measurement unit, when the current and voltage are abnormal, the internal circuit of the device is proved to have short circuit, disconnection or other problems, the potential problems of the sample device can be detected in advance, defective products are prevented from flowing into the market, and economic or reputation loss is brought to brands or companies.
In some embodiments of the present invention, the sound collecting structure 220 is configured in a cone-hopper shape, the large end of the sound collecting structure 220 is close to the placement groove 210, and the small end of the sound collecting structure 220 is fixed in the silencing unit 200. The big end of the sound collecting structure 220 is close to the sample device, so that more sound signals can be collected, and the small end is fixedly arranged at the end, opposite to the placing groove 210, of the mute unit 200, so that the sound signals can be collected and gathered conveniently. The mute cone-hopper-shaped sound collection structure 220 can better collect sound signals emitted by the sample device at the opposite end, so that the sound collection result of the sample device is more accurate.
In some embodiments of the present invention, the sound sensor 230 is disposed at a bottom middle position of the small end of the sound collecting structure 220. The sound sensor 230 is arranged in the middle of the bottom of the small end of the sound collection structure 220, so that sound signals are accumulated through a series of reflections of the cone hopper, more sound signals are collected, and the result of the sound collection signals is more accurate.
In some embodiments of the present invention, the side wall of the mute unit 200 connected to the driving mechanism 300 or the side wall of the mute box 100 connected to the driving mechanism 300 is perpendicular to the surface of the end of the placing slot 210. The drive mechanism 300 can impart a vertical angular acceleration to the sample device during operation of the sample device, making the sample device more susceptible to potential problems. The detection result is more accurate.
Referring to fig. 4, in some embodiments of the present invention, the mute unit 200 is further provided with a cover 260 and a connection pipe 250, the cover 260 is connected to an outside of a sidewall of the mute unit 200 through the connection pipe 250, and the cover 260 and the connection pipe 250 are used for air backflow of the mute unit 200. The connecting pipe 250 is arranged to connect the side wall of the mute unit 200 and the case cover 260, so that the air flow at the air outlet of the sample device can return to the air inlet of the sample device along the connecting pipe 250, the generation of air flow sound is avoided, and the sound collection result of the sample device is more accurate.
Referring to fig. 5, in some embodiments of the present invention, four mute units 200 are provided, two of the four mute units 200 are fixedly connected to each other, one side of the mute unit 200 connected to the connecting pipe 250 is disposed on the opposite side of the connecting surface with the other mute units 200, and the driving mechanism 300 is configured to drive the four mute units 200 to rotate.
Further, the placement groove 210 is provided in two layers, and a damping material is disposed between the two layers. The damping material is provided with a material which converts solid mechanical vibration energy into heat and dissipates, so that vibration and noise can be weakened, the interference of vibration sound can be effectively reduced by the arrangement of the damping material, and the collection of the sound signal of the sample device is more accurate.
Specifically, in order to reduce the interference of the vibration of the sample device on the collection of the sound signal, the position of the placement groove 210 contacting the sample device may be configured to be a soft structure. The outer wall of the placing groove 210 is provided with a sound absorbing material.
Specifically, the sound sensor 230 is configured as a directional sound sensor, and the directional sound sensor includes one or a combination of two of a PU sensor and a silicon microphone sensor.
Further, the abnormal sound collection device further comprises a display mechanism 500, the display mechanism 500 is arranged outside the mute box 100, and the display mechanism 500 is connected with the control mechanism 400 and is used for displaying the analysis result of the control mechanism 400 on the collected sound of the sample device.
Referring to fig. 6, in a second aspect of the embodiments of the present invention, there is provided an abnormal sound collecting method, including:
s100, acquiring a first sound signal emitted by a sample device during working;
s400, rotating the sample device to different angles to obtain sound signals emitted by the sample device at different angles.
The sample device can expose the problem at different positions when the sample device works in different postures, and the sound signals of the sample device in different postures can be collected by collecting the sound of the sample device in the normal posture of the working state and rotating the sample device to different angles to collect the sound of the sample device in different postures, so that the sound signals of the sample device can be collected more comprehensively, and the sound signals of the sample device can be collected more comprehensively and accurately.
In some embodiments of the present invention, rotating the sample device to different angles, and acquiring the sound signals emitted by the sample device at different angles comprises:
s410, rotating the sample device to a first angle, and acquiring a second sound signal emitted when the sample device stops rotating;
s420, rotating the sample device to a second angle, and acquiring a third sound signal emitted when the sample device stops rotating;
and S430, rotating the sample device to a third angle, and acquiring a fourth sound signal emitted when the sample device stops rotating.
When the sample device works in different postures, different parts can be exposed. Through the collection of the sound signals of the sample device under the first angle, the second angle and the third angle, the sound signals of the sample device can be collected more accurately and comprehensively. Specifically, the first angle is 90 degrees, the second angle is 180 degrees, and the third angle is 270 degrees.
In some embodiments of the present invention, rotating the sample device to different angles to obtain the sound signals emitted by the sample device at different angles comprises:
s200, applying an angular acceleration to the sample device in a direction perpendicular to the sample device;
and S300, acquiring a fifth sound signal emitted by the sample device in the rotating process.
Under the drive of the angular acceleration in the vertical direction, the sample device is easier to expose potential problems, and the collection and detection results of abnormal sounds of the sample device are more accurate.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the gist of the present invention.
Referring to fig. 1 to 6, an abnormal sound collecting apparatus according to an embodiment of the present invention is described in detail with a specific embodiment. It is to be understood that the following description is only exemplary, and not a specific limitation of the invention.
Referring to fig. 1 to 6, an embodiment of the present invention provides an abnormal sound collecting apparatus, including: a mute box 100 for isolating external noise; a mute unit 200 disposed in the mute box 100, the mute unit 200 being configured as a box body, the mute unit 200 being provided with a placement groove 210, a sound collecting structure 220, a box cover 260 and a connection pipe 250, the box cover 260 being connected to an outside of a sidewall of the mute unit 200 through the connection pipe 250, the box cover 260 and the connection pipe 250 being used for air backflow of the mute unit 200, the placement groove 210 being disposed at one end of the mute unit 200 for placing a sample device to be collected, the sound collecting structure 220 being disposed at an end of the mute unit 200 opposite to the placement groove 210, the mute unit 200 being provided therein with a sensor including a vibration sensor 240 and a sound sensor 230, the vibration sensor 240 being disposed on the placement groove 210, the vibration sensor 240 being used for receiving a second sound signal emitted from the sample device, the sound sensor 230 being disposed on the sound collecting structure 220, the placement groove 210 being configured as two layers, the sound absorbing material is arranged on the outer wall of the placing groove 210, the sound sensor 230 is used for receiving a sound signal emitted by the sample device, wherein the sound collecting structure 220 is in a cone-hopper shape, the large end of the sound collecting structure 220 is close to the placing groove 210, the small end of the sound collecting structure 220 is fixed at one end, opposite to the placing groove 210, in the silencing unit 200, and the sound sensor 230 is arranged at the middle position of the bottom of the small end of the sound collecting structure 220; the driving mechanism 300 is arranged inside the mute box 100 and fixedly connected with one side wall of the mute unit 200, and the driving mechanism 300 is used for driving the mute unit 200 to rotate, or the driving mechanism 300 is arranged outside the mute box 100 and fixedly connected with one side wall of the mute box 100, and the driving mechanism 300 is used for driving the sound box 100 to rotate so as to drive the mute unit 200 to rotate; and a control mechanism 400 disposed outside the mute case 100, connected to the mute unit 200 and the driving mechanism 300, and controlling the rotation of the driving mechanism 300. The driving mechanism 300 is connected with the mute box 100 to control the mute box 100 to rotate, so that noise produced by the driving mechanism 300 can be better shielded; the driving mechanism 300 is disposed inside the mute case 100 and connected to the mute unit 200, which is relatively easy to implement, but is easy to make noise, and has a certain interference effect on the collection of the sound signal of the sample device, but relatively accurate sound information can be obtained by processing the middle noise signal of the sound information by the control mechanism 400. Further, the side wall of the mute unit 200 connected to the driving mechanism 300 or the side wall of the mute box 100 connected to the driving mechanism 300 is perpendicular to the surface of the end of the placing slot 210. The abnormal sound acquisition device also comprises a current and voltage measuring unit, and when the current and voltage are detected to be abnormal, whether the internal circuit of the device is short-circuited or disconnected or other problems are detected. The abnormal sound collection device further comprises a display mechanism 500, the display mechanism 500 is arranged outside the mute box 100, and the display mechanism 500 is connected with the control mechanism 400 and used for displaying the analysis result of the control mechanism 400 on the collected sound of the sample device.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.
Claims (10)
1. An abnormal sound collection device, comprising:
the mute box is used for isolating external noise;
the mute unit is arranged in the mute box and is provided with a placing groove and a sound collecting structure, the placing groove is arranged at one end of the mute unit and is used for placing a sample device to be collected, the sound collecting structure is arranged at one end, opposite to the placing groove, in the mute unit, a sensor is arranged in the mute unit and is used for receiving a sound signal and converting the sound signal into an electric signal;
the driving mechanism is arranged in the mute box and is fixedly connected with one side wall of the mute unit, the driving mechanism is used for driving the mute unit to rotate,
alternatively, the first and second electrodes may be,
the driving mechanism is arranged outside the mute box and fixedly connected with one side wall of the mute box, and is used for driving the mute box to rotate so as to drive the mute unit to rotate;
and the control mechanism is arranged outside the mute box, is connected with the driving mechanism and is used for controlling the driving mechanism to rotate.
2. The abnormal sound collection device of claim 1, wherein the sensor comprises a vibration sensor and a sound sensor, the vibration sensor is disposed on the placement slot, the vibration sensor is configured to receive a second sound signal emitted by the sample device, and the sound sensor is disposed on the sound collection structure and configured to receive a first sound signal emitted by the sample device.
3. The abnormal sound collection device according to claim 1, wherein the sound collection structure is provided in a funnel shape, a large end of the sound collection structure is close to the placement groove, and a small end of the sound collection structure is fixed in the mute unit.
4. The abnormal sound collection device according to claim 3, wherein the sound sensor is disposed at a middle position of a bottom of the small end of the sound collection structure.
5. The abnormal sound collection device according to claim 1, wherein the side wall of the mute unit connected to the driving mechanism or the side wall of the mute box connected to the driving mechanism are perpendicular to the surface of the end of the placing groove.
6. The abnormal sound collection device according to claim 1, wherein the mute unit is further provided with a case cover and a connecting pipe, the case cover is connected with the outside of one side wall of the mute unit through the connecting pipe, and the case cover and the connecting pipe are used for air backflow of the mute unit.
7. The abnormal sound collecting device according to claim 6, wherein four of the mute units are provided, two of the four mute units are fixedly connected with each other, one side of the mute unit connected with the connecting pipe is arranged on the opposite side of the connecting surface with the other mute units, and the driving mechanism is configured to drive the four mute units to rotate.
8. An abnormal sound collection method is characterized by comprising the following steps:
acquiring a first sound signal emitted by a sample device during working;
and rotating the sample device to different angles to obtain sound signals emitted by the sample device at different angles.
9. The abnormal sound collection method according to claim 8, wherein the step of rotating the sample device to different angles to obtain the sound signals emitted from the sample device at different angles comprises:
rotating the sample device to a first angle to obtain a second sound signal emitted when the sample device stops rotating;
rotating the sample device to a second angle to obtain a third sound signal emitted when the sample device stops rotating;
and rotating the sample device to a third angle to obtain a fourth sound signal sent out when the sample device stops rotating.
10. The abnormal sound collection method according to claim 9, wherein the rotating the sample device to different angles to obtain the sound signals emitted from the sample device at different angles comprises:
applying an angular acceleration to the sample device in a direction perpendicular to the sample device;
and acquiring a fifth sound signal emitted by the sample device in the rotating process.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114659616A (en) * | 2020-12-23 | 2022-06-24 | 丰田自动车株式会社 | Sound source estimation server, sound source estimation system, sound source estimation device, and sound source estimation method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114659616A (en) * | 2020-12-23 | 2022-06-24 | 丰田自动车株式会社 | Sound source estimation server, sound source estimation system, sound source estimation device, and sound source estimation method |
| CN114659616B (en) * | 2020-12-23 | 2024-05-07 | 丰田自动车株式会社 | Sound source estimation server, sound source estimation system, sound source estimation device, and sound source estimation method |
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