Abnormal sound detection equipment

Abstract

The utility model discloses abnormal sound detection equipment, and relates to the technical field of equipment voiceprint detection, the abnormal sound detection equipment comprises a box body and an abnormal sound detection device, the box body is provided with a sound insulation chamber, the sound insulation chamber is provided with an inlet and outlet which can be opened and closed, and the sound insulation chamber is used for placing household electrical appliances to be detected; the abnormal sound detection device comprises a plurality of sensors located in the sound insulation chamber, and the plurality of sensors comprise sound sensors and / or vibration sensors and are used for detecting voiceprints generated in the use process of the household electrical appliance product. And when the access is closed, the sound insulation chamber is in a sealed state, so that a good detection environment is formed. The voiceprint is acquired through the sound sensor and / or the vibration sensor, so that the acquired low-frequency signal and / or the high-frequency signal can be uploaded to the control end and then the voiceprint detection result can be obtained through data integration calculation, whether the abnormal sound condition exists in the current household electrical appliance product or not can be judged, manual intervention is not needed in the detection process, and the accuracy is high.

Description

TECHNICAL FIELD

[0001] The utility model relates to equipment voiceprint detection technical field, especially the sound detection equipment of difference. BACKGROUND

[0002] The equipment voiceprint detection technology is to judge whether the equipment exists the abnormal state according to the sound frequency emitted when the equipment works, so it is applied in the equipment processing and manufacturing, equipment maintenance and other processes, such as the sound detection of difference of product on production line, noise detection in the equipment working process, etc., which can help to detect whether the product exists the abnormal sound, so as to facilitate the operator to find the problem in time and take the corresponding measures, thereby improving the quality and production efficiency of product.

[0003] For household electrical appliances, the sound of difference detection is used to detect whether the voiceprint of product exists the abnormal state, and the existing sound detection means usually establishes a special soundproof room, and the product is run by machine, and the sound is identified by manual listening, which requires high technical personnel and is easy to make wrong detection. UTILITY MODEL CONTENT

[0004] The utility model discloses a sound detection equipment of difference, which can be compatible with the detection requirements of different sizes of household electrical appliances, and has high automation detection precision.

[0005] To achieve the above object, the utility model provides a sound detection equipment of difference for the abnormal sound detection of household electrical appliances, which comprises:

[0006] A box body has a soundproof chamber, the soundproof chamber has an openable and closable entrance, and the soundproof chamber is used for placing the household electrical appliances to be detected; and

[0007] A sound detection device of difference comprises a plurality of sensors in the soundproof chamber, and the plurality of sensors comprises a sound sensor and / or a vibration sensor, which is used to detect the voiceprint generated in the use process of household electrical appliances.

[0008] In an embodiment, the box body comprises:

[0009] A shell has a cavity with a side opening, and the opening of the cavity forms the entrance; and

[0010] A cover body is movably installed on the shell to cover or open the opening of the cavity.

[0011] At least one of the shell and the cover body is provided with a sound insulation structure, so that the cover body covers the cavity to form a sealed soundproof chamber.

[0012] In an embodiment, the cover comprises two first sound insulation panels successively sleeved, a first hollow cavity is formed between the two first sound insulation panels, and the two first sound insulation panels and the first hollow cavity together form the sound insulation structure; and / or,

[0013] At least one side wall of the shell comprises two second sound insulation panels arranged at intervals, a second hollow cavity is formed between the two second sound insulation panels, and the two second sound insulation panels and the second hollow cavity together form the sound insulation structure.

[0014] In an embodiment, a part of the box is transparently arranged to form an observation window for exposing the household appliance in the sound insulation chamber.

[0015] In an embodiment, the abnormal sound detection device further comprises an adjusting structure corresponding to the sensor, the adjusting structure comprises a mounting portion movably arranged in a horizontal direction and in an up-down direction;

[0016] At least one sensor is arranged on the mounting portion to be movable close to the surface of the product to be detected or to abut against the surface of the household appliance to be detected.

[0017] In an embodiment, the adjusting structure comprises:

[0018] A plurality of supporting rods, the extension directions of two mutually adjacent supporting rods of the plurality of supporting rods intersect, the plurality of supporting rods comprises a connecting supporting rod and a plurality of cooperating supporting rods, and the end of the connecting supporting rod is fixed to the box;

[0019] A plurality of adapter blocks, each of the adapter blocks is provided with a mounting channel on two adjacent sides thereof to movably pass through two mutually adjacent supporting rods; and,

[0020] The mounting portion is movably mounted to one of the cooperating supporting rods.

[0021] In an embodiment, a sidewall of each mounting channel is provided with a threaded hole penetrating through the corresponding adapter block;

[0022] The adjusting structure further comprises a plurality of threaded members, each threaded member is threaded through the corresponding threaded hole to abut and fix the corresponding supporting rod.

[0023] In an embodiment, the plurality of sensors comprises a vibration sensor;

[0024] The adjusting structure comprises a flexible connecting line, one end of the flexible connecting line is used to connect a control device, and the other end is connected to the vibration sensor;

[0025] The mounting portion comprises the flexible connecting line.

[0026] In an embodiment, the adjusting structure further comprises an adsorption part arranged on the vibration sensor and used for adsorbing and fixing on the surface of the household appliance to be detected.

[0027] In an embodiment, the abnormal sound detection device further comprises a bearing table which is movably arranged in the soundproof chamber in a horizontal direction and has a loading position extending out of the entrance and a detection position in the soundproof chamber, and the bearing table is used for placing the household appliance to be detected.

[0028] In an embodiment, the abnormal sound detection device further comprises a positioning assembly comprising a plurality of limiting parts arranged on the bearing table, the plurality of limiting parts are arranged along the circumference of the bearing table, each limiting part has a movable stroke from the edge of the bearing table towards the center of the bearing table, and the plurality of limiting parts are used for collectively abutting against the circumferential surface of the household appliance to be detected.

[0029] In an embodiment, the bottom surface of the soundproof chamber is provided with a water absorption plate used for absorbing liquid droplets splashed during use of the household appliance to be detected.

[0030] In the technical scheme of the utility model, the household appliance to be detected is placed into and taken out through opening and closing of the soundproof chamber, when the entrance is closed, the soundproof chamber is in a sealed state, thereby forming a good detection environment and ensuring that the soundprint of the household appliance during operation is clearly collected. The soundprint is collected by the sound sensor and / or the vibration sensor, the low-frequency signal and / or the high-frequency signal collected by the sound sensor and / or the vibration sensor can be used to calculate the soundprint detection result after being uploaded to the control end, thereby being used to determine whether the soundprint of the current household appliance meets the design requirement, i.e. whether there is an abnormal sound, the detection process does not need manual intervention and has high accuracy. Meanwhile, the data detected by the sensor can be stored, thereby facilitating subsequent tracing. BRIEF DESCRIPTION OF DRAWINGS

[0031] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or the prior art description, and obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can be obtained from the structure shown in the drawings without creative labor.

[0032] Figure 1 The structure schematic view of one embodiment of the abnormal sound detection device provided by the utility model;

[0033] Figure 2 The structure schematic view of one embodiment of the abnormal sound detection device provided by the utility model; Figure 1Schematic view of the adjustment structure and the coffee machine fitting together;

[0034] Figure 3 For Figure 1 Schematic view of the bearing seat and the positioning assembly fitting together.

[0035] BRIEF DESCRIPTION OF DRAWINGS

[0036] 100, sound detection device; 1, box; 11, shell; 12, cover; 13, access; 14, water absorption plate; 1a, sound insulation chamber; 2, sound detection device; 21, sound sensor; 22, vibration sensor; 3, adjustment structure; 31, support rod; 32, adapter block; 33, mounting portion; 34, screw element; 35, flexible connecting line; 4, bearing table; 5, positioning assembly; 51, limiting piece; 200, coffee machine.

[0037] The realization, functional features and advantages of the utility model will be further described with reference to the drawings in combination with embodiments. DETAILED DESCRIPTION

[0038] The technical solutions in the embodiments of the utility model will be clearly and completely described below in combination with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0039] It should be noted that if the embodiments of the utility model involve directional indications, the directional indications are only used to explain the relative position relationship, movement condition and the like between components in a certain posture, and if the certain posture changes, the directional indications also change accordingly.

[0040] In addition, if the embodiments of the utility model involve the description of "first", "second" and the like, the description of "first", "second" and the like is only for the description purpose, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can explicitly or implicitly include at least one feature. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the realization of those skilled in the art, and when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, and is not within the protection scope required by the utility model.

[0041] The device voiceprint detection technology is to judge whether the device is in an abnormal state according to the sound frequency emitted by the device during operation, and therefore is applied in the processes of device manufacturing, device maintenance, etc., such as abnormal sound detection of products on a production line, noise detection during device operation, etc., which can help to detect whether the products have abnormal sound, so as to facilitate the operator to find problems in time and take corresponding measures, thereby improving the quality and production efficiency of the products.

[0042] For household appliances, the existing abnormal sound detection means usually establishes a special soundproof room, runs the product with the aid of a machine, and relies on manual sound listening to identify whether the voiceprint of the product is in an abnormal state. This way requires high technical personnel and is prone to false detection.

[0043] Specifically, part of the household appliances makes a loud noise during use, which causes a large indoor noise during use by the user. Therefore, an abnormal sound detection device is arranged to detect the abnormal sound of the household appliances, so as to realize the abnormal sound control of the products. The abnormal sound detection device provided by the utility model can meet the detection requirements of household appliances of different sizes and has high precision in automatic detection.

[0044] Please refer to Figures 1 to 2 The abnormal sound detection device 100 comprises a box body 1 and an abnormal sound detection device 2. The box body 1 has a soundproof chamber 1a. The soundproof chamber 1a has an openable and closable entrance 13. The soundproof chamber 1a is used to place the household appliances to be detected. The abnormal sound detection device 2 comprises a plurality of sensors in the soundproof chamber 1a. The plurality of sensors comprise a sound sensor 21 and / or a vibration sensor 22, which are used to detect the voiceprint generated during use of the household appliances.

[0045] In the technical scheme of the utility model, the soundproof chamber 1a is opened and closed to place and take out the household appliances to be detected. When the entrance 13 is closed, the soundproof chamber 1a is in a sealed state, thereby forming a good detection environment and ensuring that the voiceprint during operation of the household appliances is clearly collected. The voiceprint is collected by the sound sensor 21 and / or the vibration sensor 22. The low-frequency signal and / or the high-frequency signal collected by the sound sensor 21 and / or the vibration sensor 22 can be calculated to obtain the voiceprint detection result after being uploaded to the control end, so as to judge whether the voiceprint of the current household appliances meets the design requirements, i.e., whether there is an abnormal sound. The detection process does not require manual intervention and has high precision. Meanwhile, the data detected by the sensors can be stored for subsequent tracing.

[0046] The utility model discloses not limit the specific type of household electrical appliances, mainly applicable to small household electrical appliances or cooking utensils, below with coffee machine 200 as example, specific, with three coffee machine 200 of motor is exampled to be related structure's instruction, the three motors of coffee machine 200 are divided into bean beating motor, brewing motor and overall drive motor according to function.

[0047] Need to explain, multiple sensors are used to correspond multiple motors in coffee machine 200, multiple sensors can all be sound sensor 21, for example multiple microphones, place each sound sensor 21 in the side of coffee machine 200, and correspond one of the motors of coffee machine 200, it should be understood that sound sensor 21 does not contact the surface of coffee machine 200, mainly through receiving sound signal to carry out the output of low-frequency signal, if contact the surface of coffee machine 200, can be influenced detection result because the overall vibration in the working process of coffee machine 200. Multiple sensors can also all be vibration sensor 22, vibration sensor 22 is attached to the surface of coffee machine 200, and the output of high-frequency signal is carried out through vibration sensing. In the embodiment, multiple sound sensors 21 and one vibration sensor 22 that contact the surface of coffee machine 200 are set, so that more accurate detection data can be obtained by directly fitting calculation of low-frequency signal and high-frequency signal through industrial computer.

[0048] The utility model discloses not limit the structure form of box 1, considering the control convenience of entrance and exit 13 switch, in some embodiments, box 1 includes shell 11 and cover 12, shell 11 has the cavity of the setting of lateral opening, and the opening of cavity forms entrance and exit 13;Cover 12 is movably installed to shell 11, to be able to cover or open the opening of cavity;At least one of shell 11 and cover 12 is provided with sound insulation structure, so that cover 12 covers the cavity and forms sealed sound insulation chamber 1a. Through the structure design of splicing, the opening and closing of entrance and exit 13 can be realized by controlling cover 12, and the sound insulation chamber 1a has good sound insulation effect through the sound insulation structure, so as to ensure the detection environment.

[0049] Need to explain, cover 12 can correspond to the upper side or side of shell 11, or design cover plate as a structure with certain shape, so as to correspond multiple sides of shell 11 at the same time.

[0050] The utility model discloses not limit the activity form of cover 12, in the embodiment, one end of cover 12 is hingedly installed on shell 11, and the other end can rotate. In the embodiment, the two opposite ends of cover 12 are connected to shell 11 through two hydraulic rods respectively, so as to realize automatic opening and automatic closing, and the sealing effect of cover 12 and shell 11 can be ensured under the action of hydraulic drive.

[0051] In the embodiment, the cover 12 has an irregular shape, and the cover 12 has four side walls connected to each other, and each adjacent two side walls are arranged at an included angle to form a shell-like shape corresponding to the left side, the right side, the front side and the upper side of the shell 11.

[0052] The utility model discloses not limit the specific form of sound insulation structure, and in some embodiments, the cover 12 includes two first sound insulation boards that are sequentially sleeved, and a first hollow cavity is formed between the two first sound insulation boards, and the two first sound insulation boards and the first hollow cavity jointly form a sound insulation structure. The first sound insulation board can be of glass material, thereby forming a hollow glass sealing structure. This structure has good sound insulation performance. In addition, the glass material has good transparency and light transmittance, so that the operator can directly observe the state of the coffee machine 200 in the sound insulation chamber 1a through the cover plate.

[0053] In some embodiments, at least one side wall of the shell 11 includes two second sound insulation boards arranged at intervals, and a second hollow cavity is formed between the two second sound insulation boards, and the two second sound insulation boards and the second hollow cavity jointly form a sound insulation structure. It should be understood that some side walls of the shell 11 can be arranged as double-layer second sound insulation board structures, or the entire wall part of the shell 11 can be arranged as double-layer second sound insulation board structures. The second sound insulation board can be sound insulation cotton with a thickness of 100 mm, thereby forming a good sound insulation effect.

[0054] The utility model discloses not limit the specific form of sound insulation structure, and in some embodiments, the cover 12 includes two first sound insulation boards that are sequentially sleeved, and a first hollow cavity is formed between the two first sound insulation boards, and the two first sound insulation boards and the first hollow cavity jointly form a sound insulation structure. The first sound insulation board can be of glass material, thereby forming a hollow glass sealing structure. This structure has good sound insulation performance. In addition, the glass material has good transparency and light transmittance, so that the operator can directly observe the state of the coffee machine 200 in the sound insulation chamber 1a through the cover plate.

[0055] The utility model discloses not limit the specific form of sound insulation structure, and in some embodiments, the cover 12 includes two first sound insulation boards that are sequentially sleeved, and a first hollow cavity is formed between the two first sound insulation boards, and the two first sound insulation boards and the first hollow cavity jointly form a sound insulation structure. The first sound insulation board can be of glass material, thereby forming a hollow glass sealing structure. This structure has good sound insulation performance. In addition, the glass material has good transparency and light transmittance, so that the operator can directly observe the state of the coffee machine 200 in the sound insulation chamber 1a through the cover plate.

[0056] Corresponding to multiple sensors, multiple adjusting structures 3 can be provided to correspond to installation, or multiple sensors can be arranged on one adjusting structure 3. Specifically, considering the space limitation in the sound insulation chamber 1a, in some embodiments, please refer toFigure 3 The adjusting structure 3 comprises a plurality of supporting rods 31 and a plurality of adapter blocks 32, the extending directions of two supporting rods 31 adjacent to each other among the plurality of supporting rods 31 intersect, the plurality of supporting rods 31 comprises a connecting supporting rod 31 and a plurality of cooperating supporting rods 31, the end of the connecting supporting rod 31 is fixed to the box body 1; each adapter block 32 is provided with a mounting channel on each of the two adjacent sides, so as to movably pass through two supporting rods 31 adjacent to each other; and the mounting part 33 is movably mounted on one of the cooperating supporting rods 31. The mounting part 33 is used for detachably mounting one of the sensors, the plurality of supporting rods 31 are cooperatively rubberized and connected through the adapter blocks 32, so that the two supporting rods 31 adjacent to each other can be relatively moved, and through reasonable design of the number and angle of the supporting rods 31, the mounting part 33 can be movably adjusted in multiple directions, and the structure is simple and convenient to disassemble and assemble.

[0057] Through reasonable setting of the positions of the supporting rods 31, the plurality of sensors can correspond to the side and / or top of the coffee machine 200 respectively. When the sound sensor 21 is mounted on the mounting part 33, the position of the mounting part 33 is reasonably adjusted, so that the sound sensor 21 can be close to and spaced from the coffee machine 200. When the vibration sensor 22 is mounted on the mounting part 33, the position of the mounting part 33 is reasonably adjusted, so that the vibration sensor 22 is tightly attached to the surface of the coffee machine 200.

[0058] Further, the side wall of each mounting channel is provided with a threaded hole penetrating through the corresponding adapter block 32; and the adjusting structure 3 further comprises a plurality of screwing pieces 34, each screwing piece 34 is screwed through the corresponding threaded hole to abut and fix the corresponding supporting rod 31. Through the screwing piece 34, the two supporting rods 31 adjacent to each other can be fixed, so that they are kept in the required position, so that the adjusting structure exists in a flexible adjusting state and a state of being locked and fixed by the screwing piece 34, and the stability is better.

[0059] In other embodiments, the fixing of the two intersecting supporting rods 31 can be realized by setting an elastic stopper or a buckle and a plurality of buckle grooves, and the present application does not limit this.

[0060] Based on the above embodiment, the adjusting structure 3 is in a manual adjusting form, which is adjusted by the operator, in order to facilitate accurate control of the size of the adjustment, a scale can be arranged on the surface of the plurality of supporting rods 31, so as to serve as a reference during adjustment.

[0061] It should be noted that a screw rod, a motor or the like structure can be arranged to realize the position adjustment of the sensor, which is not described in detail here.

[0062] In other embodiments, the adjusting structure 3 comprises a flexible connecting line 35, one end of which is connected to the control device and the other end is connected to the vibration sensor 22; the mounting portion 33 comprises the flexible connecting line 35. That is, when the plurality of sensors comprises the vibration sensor 22, the flexible connecting line 35 is arranged for connection in consideration of the contact detection of the sensor, so that the position of the vibration sensor 22 can be flexibly adjusted without limitation, and the vibration sensor 22 only needs to be placed at the corresponding position on the coffee machine 200. It should be noted that when arranging the vibration sensor 22, the vibration sensor 22 is preferably placed close to the vibration source, but considering that the whole machine is vibrating when the coffee machine 200 is working, the vibration sensor 22 can also be placed in a position that is not easy to detach for the convenience of installation.

[0063] In order to ensure the stability of the vibration sensor 22 during the vibration detection process, the adjusting structure 3 further comprises an adsorbing portion arranged on the vibration sensor 22 and used for adsorbing and fixing on the surface of the household electrical appliance to be detected. The main function of the adsorbing portion is to fix the vibration sensor 22 on the surface of the coffee machine 200. The adsorbing portion can be a magnetic adsorption structure, which is adsorbed and fixed on the metal material on the surface of the coffee machine 200 by magnetic force. The adsorbing portion can also be a suction cup or an adhesive, which can realize the adsorbing and fixing and removal of the vibration sensor 22.

[0064] In order to facilitate the test taking and placing of the coffee machine 200, in some embodiments, the abnormal sound detection device 100 further comprises a carrying table 4, which can move in the horizontal direction to have a loading position extending out of the entrance and exit 13 and a detection position in the soundproof chamber 1a. The carrying table 4 is used for placing the household electrical appliance to be detected. When the entrance and exit 13 is opened, the carrying table 4 can move to at least partially extend out of the entrance and exit 13, so as to be in the loading position, so that the operator can place and take out the coffee machine 200, thereby reducing the carrying difficulty of the operator, and in the case of the coffee machine 200, the operator can also perform the bean adding and water adding operation.

[0065] It should be noted that the carrying table 4 can realize the automatic pushing function by using a motor and a sliding rail.

[0066] The coffee machine 200 needs to work during the detection process, so a socket needs to be arranged at the bottom of the soundproof chamber 1a to supply power to the plug of the coffee machine 200. The coffee machine 200 and the external industrial computer are connected in communication through a signal connection, so that the operator can control the function selection, start and stop of the coffee machine 200 outside after the coffee machine 200 is placed in the soundproof chamber 1a and the power supply is connected.

[0067] In order to adapt to the liquid splashing when the coffee machine 200 is added water or works, the inside of the soundproof chamber 1a needs to be waterproofed, and the socket and the driving motor of the bearing table 4 are waterproofed and explosion-proofed, so as to ensure the safety performance.

[0068] Specifically, when the adjusting structure 3 is arranged, the adjusting structure 3 is arranged on the bearing table 4 to move together with the bearing table 4, and the adjusting structure 3 can also be arranged on the box body 1.

[0069] Furthermore, the bottom surface of the soundproof chamber 1a is provided with a water absorption plate 14, which can absorb the splashing liquid drops when the coffee machine 200 works, thereby achieving the bottom waterproof function.

[0070] For the position fixing during the detection of the coffee machine 200, in some embodiments, the position can be limited by arranging a positioning groove.

[0071] The plurality of limiting pieces 51 correspond to the circumferential sides of the coffee machine 200 respectively, and each limiting piece 51 can be driven by a gas cylinder, a sliding table or a lead screw, so as to abut against the circumferential side of the coffee machine 200 together, thereby achieving the position fixing of the coffee machine 200.

[0072] The utility model also provides a kind of household electrical appliances detection equipment, and the specific structure of the household electrical appliances detection equipment includes abnormal sound detection equipment 100, which refers to the above embodiment, since the household electrical appliances detection equipment adopts all technical solutions of the above all embodiments, it at least has all beneficial effects brought by the technical solutions of the above embodiments, which will not be repeated here.

[0073] It should be noted that the utility model does not limit the specific type of household electrical appliances, which can be coffee machine 200, soy milk machine, broken wall machine, water dispenser and other appliances, or electromagnetic oven, electric rice cooker and other cooking appliances.

[0074] Embodiment one

[0075] The box body 1 is matched by the shell body 11 and the cover body 12, the movable bearing table 4 is arranged in the shell body 11, so that the bearing table 4 can be moved out when the cover body 12 is opened, the bearing table 4 is provided with three first adjusting structures 3 and three second adjusting structures 3, the first adjusting structure 3 is composed of a plurality of supporting rods 31 and adapter blocks 32, and the sound sensor 21 is installed, the second adjusting structure 3 is composed of a flexible connecting wire 35, and the vibration sensor 22 is installed.

[0076] The test process is as follows: opening the cover body 12, driving the bearing table 4 to extend out, at this time, the adjusting structure 3 and the positioning assembly 5 are taken out synchronously, after the coffee machine 200 is placed, the plurality of limiting pieces 51 are driven to fix the coffee machine 200, then the positions of the mounting portions 33 in the plurality of first adjusting structures 3 are adjusted, so that the plurality of sound sensors 21 are close to and correspond to the plurality of motors of the coffee machine 200, the plurality of vibration sensors 22 are magnetically attracted and fixed on the surface of the coffee machine 200, and are located close to the motors of the coffee machine 200. The power supply of the coffee machine 200 is placed on the power strip in the soundproof chamber 1a, the bearing table 4 is driven to return to the shell body 11, the cover body 12 is closed, so that the soundproof chamber 1a is closed, the industrial computer is controlled to control the coffee machine 200 to work, so that the detection is carried out.

[0077] Example two

[0078] Compared with example one, only three vibration sensors 22 are arranged, the three vibration sensors 22 are all attracted and fixed on the surface of the coffee machine 200, and correspond to the positions of the three motors of the coffee machine 200 respectively, so that the detection is carried out.

[0079] Example three

[0080] Compared with example one, the sound sensor 21 and the vibration sensor 22 are arranged at the same time, but the number of the sound sensor 21 is more than that of the vibration sensor 22.

[0081] The above is only the preferred embodiment of the utility model, and does not limit the patent range of the utility model, and any equivalent structural transformation made by using the utility model specification and the drawings contents, or direct / indirect application in other related technical fields is included in the patent protection range of the utility model.

Claims

1. A noise detection device for detecting abnormal noises in household appliances, characterized in that, include: The enclosure has a soundproof chamber with an openable and closable entrance and exit, and the soundproof chamber is used to place the household appliance to be tested. as well as, An abnormal noise detection device includes multiple sensors located within the soundproof cavity, the multiple sensors including sound sensors and / or vibration sensors, for detecting sound patterns generated during the use of household appliances.

2. The abnormal noise detection device as described in claim 1, characterized in that, The enclosure includes: A housing having a cavity with a side opening, the opening of which forms the inlet / outlet; and, A cover is movably mounted to the housing so as to cover or open the opening of the cavity; At least one of the housing and the cover is provided with a sound insulation structure, such that the cover covers the cavity to form a sealed sound insulation chamber.

3. The abnormal noise detection device as described in claim 2, characterized in that, The cover includes two first sound-insulating panels nested together, with a first hollow cavity formed between the two first sound-insulating panels. The two first sound-insulating panels and the first hollow cavity together form the sound-insulating structure; and / or At least one side wall of the housing includes two second sound insulation plates spaced apart, forming a second hollow cavity between the two second sound insulation plates, and the two second sound insulation plates and the second hollow cavity together form the sound insulation structure.

4. The abnormal noise detection device as described in any one of claims 1 to 3, characterized in that, The enclosure is partially transparent to form an observation window for displaying the home appliances inside the soundproof cavity.

5. The abnormal noise detection device as described in claim 1, characterized in that, The abnormal noise detection device further includes an adjustment structure corresponding to the sensor, the adjustment structure including a mounting part that can be moved horizontally and vertically; At least one of the sensors is disposed on the mounting portion so that it can move to be close to the surface of the product to be tested, or to be moved to be against the surface of the household appliance to be tested.

6. The abnormal noise detection device as described in claim 5, characterized in that, The adjustment structure includes: Multiple support rods, wherein the extension directions of two adjacent support rods intersect, and the multiple support rods include a connecting support rod and multiple mating support rods, wherein the end of the connecting support rod is fixed to the housing; Multiple adapter blocks, each adapter block having installation channels on two adjacent sides for two adjacent support rods to be movably inserted; and, The mounting part is movably mounted onto one of the mating support rods.

7. The abnormal noise detection device as described in claim 6, characterized in that, Each of the mounting channels has a threaded hole on its sidewall that passes through the corresponding adapter block; The adjustment structure also includes multiple screw connectors, each screw connector having its threads passing through a corresponding threaded hole to abut and fix the corresponding support rod.

8. The abnormal noise detection device as described in claim 5, characterized in that, The plurality of sensors include vibration sensors; The adjustment structure includes a flexible connecting line, one end of which is used to connect to the control device, and the other end is used to connect to the vibration sensor. The mounting section includes the flexible connecting line.

9. The abnormal noise detection device as described in claim 8, characterized in that, The adjustment structure also includes an adsorption section, which is disposed on the vibration sensor and is used to adsorb and fix onto the surface of the household appliance to be tested.

10. The abnormal noise detection device as described in claim 1, characterized in that, The noise detection device also includes a support platform, which can be installed horizontally in the soundproof chamber and has a loading position extending out of the inlet and outlet, and a detection position in the soundproof chamber. The support platform is used to place the household appliance product to be tested.

11. The abnormal noise detection device as described in claim 10, characterized in that, The noise detection device further includes a positioning component, which includes multiple limiting members disposed on the support platform. The multiple limiting members are arranged circumferentially along the support platform, and each limiting member has a travel distance from the edge of the support platform toward the center of the support platform. The multiple limiting members are used to jointly abut against the peripheral side of the household appliance to be tested.

12. The abnormal noise detection device as described in claim 1, characterized in that, The bottom surface of the soundproof chamber is equipped with a water-absorbing plate to absorb droplets splashed out during the use of the household appliances to be tested.

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