CN113554924A - Bionic head model and system - Google Patents
Bionic head model and system Download PDFInfo
- Publication number
- CN113554924A CN113554924A CN202110788081.6A CN202110788081A CN113554924A CN 113554924 A CN113554924 A CN 113554924A CN 202110788081 A CN202110788081 A CN 202110788081A CN 113554924 A CN113554924 A CN 113554924A
- Authority
- CN
- China
- Prior art keywords
- bionic
- head
- layer
- data
- skull
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
- G09B25/00—Models for purposes not provided for in G09B23/00, e.g. full-sized devices for demonstration purposes
Landscapes
- Engineering & Computer Science (AREA)
- Business, Economics & Management (AREA)
- Physics & Mathematics (AREA)
- Educational Administration (AREA)
- Educational Technology (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Measuring And Recording Apparatus For Diagnosis (AREA)
Abstract
The invention discloses a bionic head model and a system, wherein the model is used for replacing a user to use a head-wearing article and collect data, and is provided with a bionic skull layer and a bionic head soft tissue layer, the bionic skull layer comprises a bionic brain layer and a bionic face layer, and the bionic head soft tissue layer forms a bionic eye region, a bionic mouth region, a bionic nose region and a bionic ear region; the model further comprises a processor, a transmitter, a camera device, a pressure sensor and a temperature and humidity sensor, wherein the processor is respectively connected with the transmitter, the camera device, the pressure sensor and the temperature and humidity sensor. This bionical head model is through the head data collection that detects when the user uses the head-mounted articles for use to learn user's suitability and comfort level, can test multiple head-mounted articles for use, have higher compatibility, provide more data support for the design development and the inspection of head-mounted articles for use.
Description
Technical Field
The invention relates to the fields of human engineering, information technology and biology, in particular to a bionic head model and a system.
Background
Biomimetic head models are commonly used in the fields of education, beauty salon, medicine, and the like. Biomimetic head models are often used in conjunction with headwear for the design, manufacture, and inspection of headwear. The head-wearing article is worn on the bionic head model, and can test multiple performances of the head-wearing article, including inhalation resistance, exhalation resistance, dead space, visual field, air tightness, flammability, wearing zone pressure and the like of the head-wearing article.
In the field of head-wearing articles, particularly in the field of current medical protective articles under epidemic conditions, a head die is required to be used for testing the inhalation resistance, exhalation resistance, dead space, visual field, air tightness and flammability of the head-wearing articles, and three-dimensional head dies with different head surface characteristic sizes are required for design, manufacture and inspection of various head-wearing articles.
In the prior art, the inventor finds that the bionic head model generally comprises a skull made of hard materials, and some head models wrap a layer of soft tissues of the head and the face on the skull. Its structure is fairly simple, the function is more single, only as the supporting body of head-mounted supplies, only be used for wearing the show of head-mounted supplies and wear the effect, can not learn the user's of wearing the product suitability and comfort level, can't provide relevant data support for the design development and the inspection of head-mounted supplies, lack the detection in the aspect of head-mounted supplies wearers 'perception and comfort level, lead to the head-mounted supplies just can feedback the comfort level after producing through user's actual experience, thereby there is certain hysteresis quality in the feedback of head-mounted supplies. Therefore, the development of a bionic head model for designing and detecting the head-wearing articles is an urgent need at present.
Disclosure of Invention
In order to overcome the defects and shortcomings in the prior art, the invention provides a bionic head model, which is provided with a camera device, a pressure sensor, a temperature and humidity sensor and a sound acquisition device to detect data in the aspects of perception and comfort of a wearer of a head-wearing article.
The second purpose of the invention is to provide a bionic head system.
A third objective of the present invention is to provide a headwear detection system.
In order to achieve the first purpose, the invention adopts the following technical scheme:
a bionic head model is used for replacing a user to use a head-wearing article and collect data, and is provided with a bionic skull layer and a bionic head soft tissue layer, wherein the bionic skull layer comprises a bionic brain layer and a bionic face layer which are connected, the bionic head soft tissue layer is wrapped on the outer layer of the bionic face layer and forms a bionic eye region, a bionic mouth region, a bionic nose region and a bionic ear region, the bionic ear regions are arranged on two sides of the bionic face layer, the bionic head soft tissue layer comprises a bionic skin layer and a bionic muscle layer, and the bionic muscle layer and the bionic skin layer are sequentially arranged from the inner layer to the outer layer to form a layered structure;
the bionic head model further comprises a processor, a transmitter, a camera device, a pressure sensor and a temperature and humidity sensor, wherein the processor is respectively connected with the transmitter, the camera device, the pressure sensor and the temperature and humidity sensor, the processor and the transmitter are embedded in the bionic skull layer, and the camera device, the pressure sensor and the temperature and humidity sensor are respectively embedded in the bionic head soft tissue layer;
the pressure sensor is arranged in the bionic ear area, and the temperature and humidity sensor is arranged in the bionic eye area, the bionic mouth area, the bionic nose area and the bionic skull layer.
According to a preferable technical scheme, the bionic eye area comprises a bionic eye socket area and a bionic eye area, an eye hole is formed in the bionic eye area, the eye hole penetrates through a bionic skin layer and a bionic muscle layer in sequence, the camera device is arranged on the edge portion of the tail end of the eye hole relatively, and the camera device is arranged on a bionic face skull layer.
As a preferred technical scheme, the thickness of the bionic skin layer is larger than 3mm, and the pressure sensor is arranged at the position, from outside to inside, of the bionic skin layer, from 1.5mm to 3 mm.
According to the preferred technical scheme, the temperature and humidity sensor comprises a temperature and humidity sensing main body and a temperature and humidity sensing probe, the temperature and humidity sensing probe is connected with the temperature and humidity sensing main body, the temperature and humidity sensing main body is arranged on the bionic skull layer, and the temperature and humidity sensing probe is arranged at the position, from outside to inside, of 0.5mm to 1mm of the bionic skin layer.
As a preferred technical scheme, the bionic facial skull layer is provided with a bionic jaw bone area, and the bionic jaw bone area is arranged below the bionic eye socket area in the horizontal plane direction;
in the direction vertical to the plane of the bionic skin layer, the bionic jaw area is arranged at the position close to the inner layer of the bionic muscle layer and is connected with the inner layer of the bionic muscle layer;
bionic head model still includes respiratory sensor, respiratory sensor is connected with the treater, respiratory sensor's one end is fixed to be set up in bionical jaw district, and respiratory sensor's the other end sets up in bionical muscle in situ, bionical head soft tissue layer is equipped with jaw through-hole in the direction with bionical jaw district vertically, jaw through-hole corresponds with the position that respiratory sensor set up in bionical jaw district.
As the preferred technical scheme, the bionic ear patch further comprises a sound collection device, wherein the sound collection device is connected with the processor, and the sound collection device is embedded into the middle ear position of the bionic ear region and penetrates through the bionic skin layer from outside to inside by 1mm to 2 mm.
According to the preferred technical scheme, the bionic skull layer is made of ABS engineering plastics and is used for providing powerful support for a bionic head soft tissue layer and a head-wearing article;
the bionic head soft tissue layer is made of silicon rubber, and the bionic skin layer and the bionic muscle layer are made of silicon rubber materials with different Shore hardness;
the bionic head model is manufactured by the following steps:
step S1: scanning a preset number of personnel by utilizing a nuclear magnetic resonance technology to obtain head image data, and summarizing to obtain a head image data average value;
step S2: separating the contours of a soft tissue layer of the head and the skull based on the average value of the head image data, determining the thickness, the density, the Poisson ratio and the elastic modulus of the bionic skull layer and the soft tissue layer of the head, and calculating biological data of a bionic skin layer and a bionic muscle layer, wherein the biological data comprises the thickness, the density, the Poisson ratio and the elastic modulus;
step S3: and manufacturing a bionic head model according to the thickness, the density, the Poisson ratio and the elastic modulus of the bionic skull layer and the bionic head soft tissue layer.
In order to achieve the second object, the invention adopts the following technical scheme:
a bionic head system is provided with a base, a skull supporting mechanism, a skull transmission mechanism, a receiver and a display, wherein the receiver is connected with the display, the bionic head system further comprises the bionic head model, the skull supporting mechanism is movably connected with the base, the skull supporting mechanism is fixedly connected with the skull transmission mechanism, the bionic head model is connected with the skull supporting mechanism, the skull transmission mechanism is arranged on a bionic skull layer, and the skull transmission mechanism is respectively connected with the bionic skull layer and the bionic facial skull layer;
the skull supporting mechanism adopts a steering engine driving mode, the skull transmission mechanism comprises a sun wheel, a planet wheel and an inner gear ring, and the planet wheel is respectively connected with the sun wheel and the inner gear ring so as to form a planet gear reducer for transmission;
the receiver is wirelessly connected with the transmitter;
the bionic head system is used for realizing an evaluation method of the head-wearing article, and the evaluation method of the head-wearing article comprises the following steps:
a data acquisition step: acquiring data through a pressure sensor, a temperature and humidity sensor, a sound acquisition device and a camera device respectively to obtain data to be evaluated, wherein the data to be evaluated comprises pressure data, temperature data, humidity data, audio data and image data;
and (3) data evaluation step: respectively setting a plurality of preset threshold intervals for pressure data, temperature data, humidity data, audio data and image data;
for pressure data, temperature data, humidity data and audio data, each preset threshold interval corresponds to a preset evaluation score and a preset comfort level;
for image data, each preset threshold interval corresponds to a preset evaluation score and a preset performance evaluation grade;
judging a comfort level and a performance evaluation level according to a preset threshold interval in which the data to be evaluated is positioned to obtain evaluation result data, wherein the evaluation result data comprises the comfort level and the performance evaluation level;
and (3) data display step: and sending the data to be evaluated and the evaluation result data to a display for displaying.
In order to achieve the third object, the invention adopts the following technical scheme:
a head-wearing article detection system is provided with a dust generator and a head-wearing article, and further comprises the bionic head system;
the head-wearing article adopts goggles, and the dust generating device is used for generating diffused airflow with dust;
the goggles are provided with a spectacle frame fixing band and a spectacle frame main body, the spectacle frame fixing band is connected with the spectacle frame main body through a rubber band, the spectacle frame fixing band is hung on a bionic ear region, the rubber band is sleeved on a bionic head soft tissue layer wrapped at the rear end part of a bionic skull layer, and the spectacle frame main body and the bionic eye region form a first closed space;
the bionic head model further comprises a dust sensor, wherein the dust sensor is arranged in the first closed space and is embedded in the surface of the bionic skin layer.
As a preferred technical scheme, the head-wearing article detection system is provided with a dust generator and a head-wearing article, and further comprises the bionic head system;
the dust generating device is used for generating diffused airflow with dust;
the head-wearing article adopts a face mask, the face mask is provided with a shielding cover and a shielding cover fixing band, the shielding cover fixing band is connected with the bionic ear region to stabilize the shielding cover, the bionic mouth region and the bionic nose region are wrapped by the shielding cover, the edge part of the shielding cover and the bionic head soft tissue layer are fixed under the tension of the shielding cover fixing band, and then the edge part of the shielding cover, the bionic mouth region and the bionic nose region form a second closed space;
the pressure sensor is arranged at the connecting position of the edge part of the shielding cover, the bionic mouth area and the bionic nose area, and is also arranged at the connecting position of the shielding cover fixing band and the bionic ear area, and the shielding cover fixing band adopts an elastic rope;
the bionic head model further comprises a dust sensor, and the dust sensor is arranged in the second closed space and embedded in the surface of the bionic skin layer;
the processor collects pressure data collected by the pressure sensor according to the pressure point bitmap, the pressure data comprise pressure size and pressure space arrangement, the processor generates pressure point cloud data according to the pressure size and the pressure space arrangement, the pressure data and the pressure point cloud data are sent to the receiver through the sender, and the pressure point cloud data are combined on the three-dimensional virtual simulation head model through the displayer to be displayed in real time.
Compared with the prior art, the invention has the following advantages and beneficial effects:
(1) the bionic head model is provided with a processor, a transmitter, a camera device, a pressure sensor, a temperature and humidity sensor and a sound acquisition device, wherein the processor is respectively connected with the transmitter, the camera device, the pressure sensor, the temperature and humidity sensor and the sound acquisition device.
(2) The bionic head model is embedded in a bionic skull layer by adopting the processor and the transmitter, the camera device, the pressure sensor and the temperature and humidity sensor are respectively embedded in a bionic head soft tissue layer and are fixedly connected in an embedded mode, and the detected acquired data has higher accuracy in the wearing experience simulation of the head-wearing type articles, and has higher reference value in the testing and issuing and counting processes of the head-wearing type articles, so that the defects of the existing detection method of the head-wearing type articles are overcome, the data are acquired in time, and the hysteresis of the detection on the comfort level of a user during the production of the head-wearing type articles is reduced.
(3) According to the bionic head model, the processor is respectively connected with the transmitter, the camera device, the pressure sensor, the temperature and humidity sensor and the sound acquisition device to form integration of acquired data, audio, video, pressure, temperature and humidity data are acquired at the same time, the data are stored through the built-in data integration processor, and integration of the data can be realized without connecting a terminal, so that the data transmission efficiency is improved, the technical problems that the existing bionic head model is single in data acquisition type and can be used for data processing only by connecting the terminal are solved, the environment data are acquired all-directionally and simultaneously, and integration and conversion of the data are realized in the bionic head model, so that the technical effect of acquiring and processing information by the human head is simulated more truly.
Drawings
FIG. 1 is a schematic view of a bionic head model according to embodiment 1 of the present invention;
fig. 2(a) is a schematic front view of a bionic head system in a half-section according to embodiment 2 of the present invention;
FIG. 2(b) is a schematic top view of a half-section of a bionic head system in embodiment 2 of the present invention;
fig. 2(c) is a schematic left-view of a half-section of a bionic head system in embodiment 2 of the present invention.
FIG. 3(a) is a pressure point bitmap of a bionic head model in embodiment 4 of the present invention;
fig. 3(b) is a pressure cloud of the bionic head model in embodiment 4 of the present invention.
The bionic head model comprises a bionic head model 1, a processor 2, a transmitter 3, a camera 4, a pressure sensor 5, a temperature and humidity sensor 6, a sound acquisition device 7, a breathing sensor 8, goggles 9, a visual field diagram 10, a mask 11, a base 12, a skull supporting mechanism 13 and a skull transmission mechanism 14.
Detailed Description
In the description of the present disclosure, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of describing and simplifying the present disclosure, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present disclosure.
Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Also, the use of the terms "a," "an," or "the" and similar referents do not denote a limitation of quantity, but rather denote the presence of at least one. The word "comprising" or "comprises", and the like, means that the element or item appearing before the word covers the element or item listed after the word and its equivalents, but does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect.
In the description of the present disclosure, it is to be noted that the terms "mounted," "connected," and "connected" are to be construed broadly unless otherwise explicitly stated or limited. For example, the connection can be fixed, detachable or integrated; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present disclosure can be understood in specific instances by those of ordinary skill in the art. In addition, technical features involved in different embodiments of the present disclosure described below may be combined with each other as long as they do not conflict with each other.
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Examples
Example 1
As shown in fig. 1, the present embodiment provides a bionic head model for using a head-worn article and collecting data instead of a user. The bionic head model is a user head model and is correspondingly provided with a bionic skull layer and a bionic head soft tissue layer, wherein the bionic skull layer comprises a bionic brain layer and a bionic face layer, the bionic brain layer is connected with the bionic face layer, and the bionic head soft tissue layer is wrapped on the outer layer of the bionic face layer and forms a bionic eye region, a bionic mouth region, a bionic nose region and a bionic ear region. The bionic ear regions are arranged on two sides of the bionic skull layer. Bionic head soft tissue layer includes bionic skin layer and bionic muscle layer, bionic skin layer set up the formation layered structure according to by inlayer to the skin in proper order. The bionic head model further comprises a processor, a transmitter, a camera device, a pressure sensor, a temperature and humidity sensor and a sound collecting device, wherein the processor is respectively connected with the transmitter, the camera device, the pressure sensor, the temperature and humidity sensor and the sound collecting device, the processor and the transmitter are embedded in the bionic brain layer, and the camera device, the pressure sensor and the temperature and humidity sensor are respectively embedded in the bionic head soft tissue layer.
In this embodiment, bionical eye region is equipped with bionical eye orbit district and bionical eyes district, and bionical eyes district is equipped with the eye hole in eyes department, and this eye hole runs through bionical skin layer and bionical muscle layer in proper order, and camera device sets up the terminal edge portion in the eye hole relatively, and camera device specifically sets up on bionical face cranium layer.
In this embodiment, pressure sensor and temperature and humidity sensor all embed at bionical skin layer, and pressure sensor sets up in bionical ear district, and temperature and humidity sensor sets up in bionical eye region, bionical oral area district, bionical nose district, and temperature and humidity sensor still sets up on bionical skull layer to detect the comfort level of wear-type articles for use when dressing better.
In practical application, the thickness of the bionic skin layer is larger than 3mm, and the pressure sensor is arranged at the position of the bionic skin layer, which is 3mm from outside to inside. In addition, the pressure sensor can be arranged at the position from outside to inside 1.5mm to 3mm from the bionic skin layer by a person skilled in the art according to the actual situation.
In this embodiment, the pressure sensor specifically adopts a plurality of Tekscan a401 series film sensors to gather the pressure of wearing the position, and pressure sensor distributes in the position that bionical skin is comparatively mild and receive the oppression of protective articles article to reach installation stability and data acquisition accuracy.
In this embodiment, the temperature and humidity sensor collects temperature and humidity by using an SHT31 miniature digital temperature and humidity sensor, and the temperature and humidity sensor is distributed at positions where temperature and humidity change in a wearing area is significant, including positions near the mouth and nose, a respiratory airflow channel and eye sockets; specifically, temperature and humidity sensor includes humiture sensing main part and humiture sensing probe, and humiture sensing main part and humiture sensing probe are connected, and humiture sensing main part sets up on bionical face layer, and humiture sensing probe sets up in the department of 1mm outside-in apart from bionical skin layer, and humiture sensing probe can set up at bionical skin layer outside-in 0.5mm to 1mm according to actual conditions in addition. According to the detection requirement, the temperature and humidity sensor array is deployed at the positions of the oral cavity, the nose, the eye socket, the head top and the like so as to obtain the microenvironment temperature and humidity of the wearing and covering area of the protective product. The processor transmits the collected data to the transmitter based on the USB3.0, and the transmitter transmits the data with the receiver based on a wireless communication mode.
In this embodiment, the image capturing apparatus specifically uses 2 CCD cameras to acquire visual information. In practical application, the CCD camera is a 5MP M12 super-large wide-angle fisheye CCD, the distribution positions of 2 CCDs are arranged in a head coordinate system where the pupils of a real person are located, and the interpupillary distance and the sight direction are adjusted by adjusting the set angle.
In this embodiment, the sound collection device is embedded in the bionic ear region and penetrates through the bionic skin layer from outside to inside by 1mm to 2 mm. In practical application, the sound collection device adopts a high-fidelity audio collector, and is positioned at the middle ear position of the bionic ear region so as to simulate audio signals received by a real cochlea. During practical application, the sound collecting device specifically adopts a sound pick-up, and the sound pick-up collects audio data of the head-wearing type articles in the testing process and sends the audio data to the processor so as to test the influence degree of wearing the head-wearing type articles on human hearing.
In this embodiment, the bionic facial skull layer is provided with a bionic jaw area, and the bionic jaw area is arranged below the bionic eye socket area in the horizontal plane direction; on the direction of perpendicular bionical skin layer place plane, bionical jaw district sets up and is being connected with the inlayer of bionical muscle layer in the inlayer position department that is close to bionical muscle layer.
In this embodiment, the bionic head model further comprises a respiration sensor, the respiration sensor is connected with the processor, one end of the respiration sensor is fixedly arranged in the bionic jaw bone area, and the other end of the respiration sensor is arranged in the bionic muscle layer; correspondingly, the bionic head soft tissue layer is provided with a jaw bone through hole in the direction vertical to the bionic jaw bone area, and the jaw bone through hole corresponds to the position of the breathing sensor in the bionic jaw bone area. During practical application, when gas contacts the head-wearing article worn on the bionic head model, the breathing sensor acquires airflow data in the mask and transmits the airflow data to the processor, and the processor forwards the airflow data to the receiver through the transmitter.
In this embodiment, the bionic skull layer is made of ABS engineering plastic, and powerful support is provided for the bionic head soft tissue layer and the head-wearing article. The bionic head soft tissue layer is made of silicon rubber, and the silicon rubber has soft texture and can better simulate the skin of the head of a person. The bionic skin layer and the bionic muscle layer are made of silicon rubber materials with different Shore hardness, the Shore hardness of the bionic skin layer is smaller than that of the bionic muscle layer, and then more accurate test effects can be achieved for the bionic hardness of the head. In practical application, the shore hardness of the bionic skin layer is 5A, the shore hardness of the bionic muscle layer is 12A, the shore hardness of soft tissue parts with cartilages such as a nose and an ear is 20A, namely the shore hardness of the bionic mouth region, the bionic nose region and the bionic ear region is 20A.
To the bionic head model that this embodiment provided, technical personnel in the field can use according to actual conditions cooperation head-mounted articles for use, can gather and wear head-mounted articles for use to the multiple facial data that bionic head model produced, including data such as pressure, temperature, humidity, gas tightness, audio frequency and image, and then provide data support for the design development and the inspection of head-mounted articles for use.
In this embodiment, the bionic head model is manufactured by the following steps:
step S1: and scanning a preset number of personnel by utilizing a nuclear magnetic resonance technology to obtain head image data, and summarizing to obtain a head image data average value. In practical application, the preset number of people is specifically 20 adults, male and female.
Step S2: separating the contours of the soft tissue layer of the head and the skull based on the average value of the head image data, determining the thickness, the density, the Poisson ratio and the elastic modulus of the bionic skull layer and the soft tissue layer of the head, and calculating the biological data of the bionic skin layer and the bionic muscle layer, wherein the biological data comprises the thickness, the density, the Poisson ratio and the elastic modulus.
Step S3: and manufacturing a bionic head model according to the thickness, the density, the Poisson ratio and the elastic modulus of the bionic skull layer and the bionic head soft tissue layer.
In this embodiment, when the head-mounted articles for use were worn in bionical head model, pressure sensor and temperature and humidity sensor can simulate mankind and detect corresponding pressure data, temperature data and temperature data to help people to learn the user experience of head-mounted articles for use.
In this embodiment, the distribution strategy of the plurality of sensor measurement points of the bionic head model is as follows: various state values of the head model when the protective article is worn are collected, multi-mode signal source characteristics such as pressure, temperature and humidity, video and audio are analyzed, and distribution of a plurality of sensor measuring points is determined by combining head characteristics and soft tissue structures. The wearing positions and the wearing modes of various head and face protection articles such as full masks, half-mask breathing apparatuses, goggles and the like are analyzed, and head and face features such as compression points, fit areas, audio-visual signal acquisition points and the like on the bionic head model are established.
The integration of data is realized in the treater, converts the raw data that each sensor was gathered into digital signal, and the same time stamp is used in the same chronogenesis processing of rethread, forwards to the receiver through the sender, and then helps people to obtain the user experience data of wear-type articles for use, provides more data support for wear-type articles for use's design development and inspection.
Example 2
As shown in fig. 2(a) to 2(c), the present embodiment provides a bionic head system, which includes a base, a skull supporting mechanism, a skull transmission mechanism, and the bionic head model in embodiment 1. The skull supporting mechanism is movably connected with the base, the skull supporting mechanism is fixedly connected with the skull transmission mechanism, the bionic head model is connected with the skull supporting mechanism, the skull transmission mechanism is arranged on the bionic skull layer, and the skull transmission mechanism is respectively connected with the bionic skull layer and the bionic face skull layer.
In the embodiment, the skull supporting mechanism adopts a steering engine driving mode to realize head nodding action of the bionic head model; the skull transmission mechanism comprises a sun gear, a planet gear and an inner gear ring, and the planet gear is respectively connected with the sun gear and the inner gear ring so as to form a planet gear reducer for transmission.
Example 3
This embodiment 3 is further described by taking goggles in a head-wearing article as an example:
the embodiment provides a head-mounted article detection system, which is provided with a bionic head system, a dust generator and goggles in the embodiment 2, wherein a bionic head model is worn in cooperation with the goggles; the goggles are provided with a spectacle frame fixing belt and a spectacle frame main body, and the spectacle frame fixing belt is connected with the spectacle frame main body. The picture frame main part is connected to the picture frame fixed band adoption rubber band, and the picture frame fixed band is hung and is put on bionical ear district, overlaps the soft tissue layer of bionical head of end parcel behind bionical skull layer with the rubber band, utilizes rubber band elasticity to be fixed in bionical eye district the place ahead with the goggles, and then picture frame main part and bionical eye district form first enclosure space.
In this embodiment, the dust generating device is used to generate a diffused air flow with dust.
In this embodiment, the bionic head model further comprises a dust sensor, the dust sensor is arranged in the first closed space and embedded in the surface of the bionic skin layer, and the dust sensor is specifically arranged in the bionic eye region.
In practical application, when the head-wearing article is worn on the bionic head model for performance test, the camera device collects images or videos of the outside visual field through the eye hole of the bionic eye area, namely image data; and sending the image data to a processor so as to indirectly test the visual field range, the sight line definition and the eye light transmittance of the head-wearing article. The pressure sensor collects pressure data generated by the bionic head soft tissue layer and sends the pressure data to the processor so as to test the adaptation degree of the head-wearing article and the head of a human body. The dust sensor collects dust amount in the goggles to test the dust filtering performance of the bionic head model when the goggles are used, and the temperature and humidity sensor collects temperature and humidity data in the testing process of the head-mounted articles to test the comfort degree of the bionic head model when the goggles are used.
And after receiving the acquired data, the processor transmits the received data to the receiver through the transmitter.
In addition, for the receiver, the technical staff in the art can adopt the display to be connected with the receiver according to actual conditions for displaying the collected data, and can also adopt the data analysis device to be connected with the receiver for further analyzing the collected data, so that designers and researchers of the head-wearing articles can obtain the user adaptability and comfort degree of the tested head-wearing articles according to the collected data and the corresponding preset threshold value.
Example 4
This example 4 further illustrates the detection system of the head-worn article in example 3 by combining the mask of the head-worn article:
in this embodiment, the head-mounted device detection system is further provided with a mask and a dust generation device. The face guard is equipped with the cover and covers fixed band, the cover fixed band is connected with bionical ear district and is stabilized the cover, the cover is wrapping up bionical oral area district and bionical nasal area, the edge part and the soft tissue layer of bionical head of cover are fixed under the tensile force effect of cover fixed band, and then the edge part and the bionical oral area district of cover, bionical nasal area forms the second enclosure space, pressure sensor sets up edge part and bionical oral area district at the cover, the hookup location department in bionical nasal area, pressure sensor still sets up the hookup location department in cover fixed band and bionical ear district. During the actual application, the fixed band of sheltering from cover specifically adopts the elasticity rope.
In this embodiment, the dust generating device is used to generate a diffused air flow with dust.
In this embodiment, the dust sensor sets up in the second enclosure space to the embedded surface that sets up at bionical skin layer, specifically, the dust sensor sets up in bionical oral area district and bionical nose district.
During practical application, when the face guard was dressed to bionical head model, the face guard contact of wearing on gas and the bionical head model, airflow data in the breathing sensor collection face guard is with the gas tightness of testing bionical head model when using the face guard, dust sensor gathers the filtration performance to the dust of dust volume in order to test bionical head model when using the face guard in the face guard, temperature and humidity data are gathered according to the comfort level of testing bionical head model when using the face guard to temperature and humidity sensor, pressure sensor gathers pressure data, and then user's suitability and comfort level when testing the use face guard.
Referring to fig. 3(a) and 3(b), the data processing method of the pressure sensor is as follows: because pressure sensor imbeds in the bionical skin layer and evenly distributed on bionical head model, the pressure data that pressure sensor gathered is collected according to the pressure point bitmap to the treater, pressure data includes pressure size and pressure space arrangement, the treater is arranged according to pressure size and pressure space and is generated pressure point cloud data, send pressure data and pressure point cloud data to the receiver through sending the ware, and utilize the display to combine the three-dimensional virtual simulation head model of pressure point cloud data reduction at the same scale and show in real time, thereby realize the collection of pressure data, integrated processing and visual display's function, with the comfort level when simulating more accurately and detecting user dress head-mounted articles for use.
Example 5
This embodiment 5 further illustrates the detection system of the headset in embodiments 3-4 by taking the headset in the headset as an example: pressure sensor gathers pressure data, and then user's suitability and the comfort level of the earphone formula product of use of test, and the audio data of head-mounted supplies in the test procedure is gathered to sound collection system to send audio data for the treater, judge the influence degree of earphone to human sense of hearing according to audio data and preset volume threshold value. When the volume of the audio data is smaller than a preset volume threshold, judging that the influence on the human hearing is small; otherwise, it is determined that the influence on human hearing is large.
Example 6
This embodiment proposes an evaluation method of a head-mounted item, the method comprising the steps of:
a data acquisition step: acquiring data through a pressure sensor, a temperature and humidity sensor, a sound acquisition device and a camera device respectively to obtain data to be evaluated, wherein the data to be evaluated comprises pressure data, temperature data, humidity data, audio data and image data, the pressure data is specifically a pressure value, the temperature data is specifically a temperature value, the humidity data is specifically a humidity value, the audio data is specifically a volume value, and the image data is specifically a view retention rate;
and (3) data evaluation step: respectively setting a plurality of preset threshold intervals for pressure data, temperature data, humidity data, audio data and image data;
for pressure data, temperature data, humidity data and audio data, each preset threshold interval corresponds to a preset evaluation score and a preset comfort level;
for image data, each preset threshold interval corresponds to a preset evaluation score and a preset performance evaluation grade;
judging a comfort level and a performance evaluation level according to a preset threshold interval in which the data to be evaluated is positioned to obtain evaluation result data, wherein the evaluation result data comprises the comfort level and the performance evaluation level;
and (3) data display step: and sending the data to be evaluated and the evaluation result data to a display for displaying.
In this embodiment, the pressure data is specifically judged by using the following table 1.
TABLE 1 evaluation of pressure data
| Pressure intensity | Score of | Comfort level |
| <5Kpa | 5 | Very comfortable |
| 5- |
4 | Is more comfortable |
| 10- |
3 | In general |
| 15- |
2 | Is less suitable for |
| >20kpa | 1 | Is very uncomfortable |
In practical application, for pressure data, 5 preset threshold value intervals are set, the preset threshold value intervals are divided according to threshold values of 5, 10, 15 and 20 respectively, and for the preset threshold value intervals with two threshold value boundaries, the preset threshold value intervals comprise left boundary values. The preset evaluation scores respectively correspond to different preset threshold intervals from 1-5, and the comfort levels comprise quite uncomfortable, less uncomfortable, general, more comfortable and quite comfortable, so that the quantized pressure data is converted into the corresponding comfort level evaluation levels in the test to evaluate the user experience more accurately.
In this embodiment, the temperature data is specifically determined by using the following table 2.
TABLE 2 evaluation of temperature data
| Temperature of | Score of | Comfort level |
| 18-26℃ | 5 | Very comfortable |
| 12-18 deg.C or 26-32 |
4 | Is more comfortable |
| 7-12 deg.C or 32-38 |
3 | In general |
| 2-7 deg.C or 38-40 |
2 | Is less suitable for |
| <2 ℃ or more than or equal to 40 DEG C | 1 | Is very uncomfortable |
In practical application, for temperature data, 5 preset threshold intervals are set, the preset threshold intervals are divided according to thresholds 2, 7, 12, 18, 26, 32, 38 and 40 respectively, and the preset threshold intervals with two threshold boundaries comprise left boundary values. The preset evaluation scores respectively correspond to different preset threshold intervals from 1-5, and the comfort level comprises quite uncomfortable, less uncomfortable, general, more comfortable and quite comfortable, so that the user experience can be evaluated more accurately by converting quantized temperature data into the corresponding comfort level evaluation level in the test.
In this embodiment, the humidity data is specifically judged by using the following table 3.
Table 3 humidity data evaluation table
| Humidity | Score of | Comfort level |
| 45-65％ | 5 | Very comfortable |
| 35-45% or 65-75% | 4 | Is more comfortable |
| 25-35% or 75-85% | 3 | In general |
| 15-25% or 85-90% | 2 | Is less suitable for |
| <15 percent or more than or equal to 90 percent | 1 | Is very uncomfortable |
In practical application, for humidity data, 5 preset threshold intervals are set, and are divided according to thresholds 15, 25, 35, 45, 65, 75, 85 and 90 respectively, so that a symmetrical range taking 45-65% of the preset threshold intervals as the center is formed; for a preset threshold interval where there are two threshold boundaries, it contains the left boundary value. The preset evaluation scores respectively correspond to different preset threshold intervals from 1-5, and the comfort levels comprise quite uncomfortable, less uncomfortable, general, more comfortable and quite comfortable, so that the quantized humidity data is converted into the corresponding comfort level evaluation levels in the test to evaluate the user experience more accurately.
In this embodiment, the audio data is determined by using the following table 4.
Table 4 audio data evaluation table
| Sound (decibel) | Score of | Comfort level |
| <20db | 5 | Very comfortable |
| 20- |
4 | Is more comfortable |
| 35- |
3 | In general |
| 50- |
2 | Is less suitable for |
| ≥65db | 1 | Is very uncomfortable |
In practical application, for humidity data, 5 preset threshold value sections are set, and are divided according to threshold values 20, 35, 50 and 65 respectively, and for the preset threshold value sections with two threshold value boundaries, the preset threshold value sections contain left boundary values. The preset evaluation scores respectively correspond to different preset threshold intervals from 1-5, and the comfort level comprises quite uncomfortable, less uncomfortable, general, more comfortable and quite comfortable, so that the user experience is more accurately evaluated by converting quantized audio data into the corresponding comfort level evaluation level in the test.
In this embodiment, the image data is specifically determined by using the following table 5.
TABLE 5 evaluation of image data
| Visual field preservation Rate | Score of | Evaluation of Performance |
| ≥80％ | 5 | Is excellent in |
| 60-80％ | 4 | Good effect |
| 40-60％ | 3 | In general |
| 20-40％ | 2 | Is poor |
| ＜20％ | 1 | Extreme difference |
In practical application, for image data, 5 preset threshold value sections are provided, and are divided according to thresholds 20, 40, 60 and 80 respectively, and for the preset threshold value section with two threshold value boundaries, the preset threshold value section contains a left boundary value. The preset evaluation scores are respectively corresponding to different preset threshold intervals from 1-5, and the performance evaluation comprises extremely poor, general, good and excellent, so that the user experience can be evaluated more accurately by converting quantized image data into corresponding comfort evaluation grades in the test.
In addition, a person skilled in the art may adjust a specific threshold value according to an actual situation to divide the preset threshold interval, which is not limited herein.
The above embodiments are preferred embodiments of the present invention, but the present invention is not limited to the above embodiments, and any other changes, modifications, substitutions, combinations, and simplifications which do not depart from the spirit and principle of the present invention should be construed as equivalents thereof, and all such changes, modifications, substitutions, combinations, and simplifications are intended to be included in the scope of the present invention.
Claims (10)
1. A bionic head model is used for replacing a user to use a head-wearing article and collect data, and is provided with a bionic skull layer and a bionic head soft tissue layer, wherein the bionic skull layer comprises a bionic brain layer and a bionic face layer which are connected, the bionic head soft tissue layer is wrapped on the outer layer of the bionic face layer and forms a bionic eye region, a bionic mouth region, a bionic nose region and a bionic ear region, and the bionic ear regions are arranged on two sides of the bionic face layer;
the bionic head model further comprises a processor, a transmitter, a camera device, a pressure sensor and a temperature and humidity sensor, wherein the processor is respectively connected with the transmitter, the camera device, the pressure sensor and the temperature and humidity sensor, the processor and the transmitter are embedded in the bionic skull layer, and the camera device, the pressure sensor and the temperature and humidity sensor are respectively embedded in the bionic head soft tissue layer;
the pressure sensor is arranged in the bionic ear area, and the temperature and humidity sensor is arranged in the bionic eye area, the bionic mouth area, the bionic nose area and the bionic skull layer.
2. The bionic head model according to claim 1, wherein the bionic eye region comprises a bionic eye socket region and a bionic eye region, the bionic eye region is provided with an eye hole, the eye hole sequentially penetrates through a bionic skin layer and a bionic muscle layer, the camera device is oppositely arranged at the tail end edge part of the eye hole, and the camera device is arranged on a bionic skull layer.
3. The biomimetic head model of claim 1, wherein the thickness of the biomimetic skin layer is greater than 3mm, and the pressure sensor is disposed at a location of 1.5mm to 3mm from the outside to the inside of the biomimetic skin layer.
4. The bionic head model according to claim 3, wherein the temperature and humidity sensor comprises a temperature and humidity sensing main body and a temperature and humidity sensing probe, the temperature and humidity sensing probe is connected with the temperature and humidity sensing main body, the temperature and humidity sensing main body is arranged on the bionic skull layer, and the temperature and humidity sensing probe is arranged at the position of 0.5mm to 1mm from outside to inside of the bionic skin layer.
5. The biomimetic head model according to claim 3, wherein the biomimetic facial layer is provided with a biomimetic jaw area, the biomimetic jaw area being disposed below the biomimetic orbital area in a direction of a horizontal plane;
in the direction vertical to the plane of the bionic skin layer, the bionic jaw area is arranged at the position close to the inner layer of the bionic muscle layer and is connected with the inner layer of the bionic muscle layer;
bionic head model still includes respiratory sensor, respiratory sensor is connected with the treater, respiratory sensor's one end is fixed to be set up in bionical jaw district, and respiratory sensor's the other end sets up in bionical muscle in situ, bionical head soft tissue layer is equipped with jaw through-hole in the direction with bionical jaw district vertically, jaw through-hole corresponds with the position that respiratory sensor set up in bionical jaw district.
6. The bionic head model according to claim 1, further comprising a sound collection device connected with the processor, wherein the sound collection device is embedded in the middle ear of the bionic ear region and penetrates through the bionic skin layer from outside to inside by 1mm to 2 mm.
7. The bionic head model according to any one of claims 1-6, wherein the bionic skull layer is made of ABS engineering plastic and is used for providing powerful support for a bionic head soft tissue layer and a head-mounted article;
the bionic head soft tissue layer is made of silicon rubber, and the Shore hardness of the bionic skin layer is smaller than that of the bionic muscle layer;
the bionic head model is manufactured by the following steps:
step S1: scanning a preset number of personnel by utilizing a nuclear magnetic resonance technology to obtain head image data, and summarizing to obtain a head image data average value;
step S2: separating the contours of a soft tissue layer of the head and the skull based on the average value of the head image data, determining the thickness, the density, the Poisson ratio and the elastic modulus of the bionic skull layer and the soft tissue layer of the head, and calculating biological data of a bionic skin layer and a bionic muscle layer, wherein the biological data comprises the thickness, the density, the Poisson ratio and the elastic modulus;
step S3: and manufacturing a bionic head model according to the thickness, the density, the Poisson ratio and the elastic modulus of the bionic skull layer and the bionic head soft tissue layer.
8. A bionic head system, provided with a base, a skull supporting mechanism, a skull transmission mechanism, a receiver and a display, wherein the receiver is connected with the display, the bionic head system is characterized by further comprising a bionic head model according to any one of claims 1-7, the skull supporting mechanism is movably connected with the base, the skull supporting mechanism is fixedly connected with the skull transmission mechanism, the bionic head model is connected with the skull supporting mechanism, the skull transmission mechanism is arranged on a bionic skull layer, and the skull transmission mechanism is respectively connected with the bionic brain layer and the bionic face skull layer;
the skull supporting mechanism adopts a steering engine driving mode, the skull transmission mechanism comprises a sun wheel, a planet wheel and an inner gear ring, and the planet wheel is respectively connected with the sun wheel and the inner gear ring so as to form a planet gear reducer for transmission;
the receiver is wirelessly connected with the transmitter;
the bionic head system is used for realizing an evaluation method of the head-wearing article, and the evaluation method of the head-wearing article comprises the following steps:
a data acquisition step: acquiring data through a pressure sensor, a temperature and humidity sensor, a sound acquisition device and a camera device respectively to obtain data to be evaluated, wherein the data to be evaluated comprises pressure data, temperature data, humidity data, audio data and image data;
and (3) data evaluation step: respectively setting a plurality of preset threshold intervals for pressure data, temperature data, humidity data, audio data and image data;
for pressure data, temperature data, humidity data and audio data, each preset threshold interval corresponds to a preset evaluation score and a preset comfort level;
for image data, each preset threshold interval corresponds to a preset evaluation score and a preset performance evaluation grade;
judging a comfort level and a performance evaluation level according to a preset threshold interval in which the data to be evaluated is positioned to obtain evaluation result data, wherein the evaluation result data comprises the comfort level and the performance evaluation level;
and (3) data display step: and sending the data to be evaluated and the evaluation result data to a display for displaying.
9. A headwear detection system having a dust generator, a headwear, wherein the headwear detection system further comprises the biomimetic head system of claim 8;
the head-wearing article adopts goggles, and the dust generating device is used for generating diffused airflow with dust;
the goggles are provided with a spectacle frame fixing band and a spectacle frame main body, the spectacle frame fixing band is connected with the spectacle frame main body through a rubber band, the spectacle frame fixing band is hung on a bionic ear region, the rubber band is sleeved on a bionic head soft tissue layer wrapped at the rear end part of a bionic skull layer, and the spectacle frame main body and the bionic eye region form a first closed space;
the bionic head model further comprises a dust sensor, wherein the dust sensor is arranged in the first closed space and is embedded in the surface of the bionic skin layer.
10. A headwear detection system having a dust generator, a headwear, wherein the headwear detection system further comprises the biomimetic head system of claim 8;
the dust generating device is used for generating diffused airflow with dust;
the head-wearing article adopts a face mask, the face mask is provided with a shielding cover and a shielding cover fixing band, the shielding cover fixing band is connected with the bionic ear region to stabilize the shielding cover, the bionic mouth region and the bionic nose region are wrapped by the shielding cover, the edge part of the shielding cover and the bionic head soft tissue layer are fixed under the tension of the shielding cover fixing band, and then the edge part of the shielding cover, the bionic mouth region and the bionic nose region form a second closed space;
the pressure sensor is arranged at the connecting position of the edge part of the shielding cover, the bionic mouth area and the bionic nose area, and is also arranged at the connecting position of the shielding cover fixing band and the bionic ear area, and the shielding cover fixing band adopts an elastic rope;
the bionic head model further comprises a dust sensor, and the dust sensor is arranged in the second closed space and embedded in the surface of the bionic skin layer;
the processor collects pressure data collected by the pressure sensor according to the pressure point bitmap, the pressure data comprise pressure size and pressure space arrangement, the processor generates pressure point cloud data according to the pressure size and the pressure space arrangement, the pressure data and the pressure point cloud data are sent to the receiver through the sender, and the pressure point cloud data are combined on the three-dimensional virtual simulation head model through the displayer to be displayed in real time.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110788081.6A CN113554924A (en) | 2021-07-13 | 2021-07-13 | Bionic head model and system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110788081.6A CN113554924A (en) | 2021-07-13 | 2021-07-13 | Bionic head model and system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113554924A true CN113554924A (en) | 2021-10-26 |
Family
ID=78131662
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110788081.6A Pending CN113554924A (en) | 2021-07-13 | 2021-07-13 | Bionic head model and system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113554924A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU219514U1 (en) * | 2023-06-16 | 2023-07-21 | Федеральное государственное бюджетное учреждение науки "Санкт-Петербургский Федеральный исследовательский центр Российской академии наук" | STAND FOR QUALIMETRY OF MEANS OF INDIVIDUAL HEAD PROTECTION AGAINST BIOLOGICAL FACTOR |
| WO2024073912A1 (en) * | 2022-10-08 | 2024-04-11 | 歌尔科技有限公司 | Head and face wearing pressure measurement device and system |
-
2021
- 2021-07-13 CN CN202110788081.6A patent/CN113554924A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024073912A1 (en) * | 2022-10-08 | 2024-04-11 | 歌尔科技有限公司 | Head and face wearing pressure measurement device and system |
| RU219514U1 (en) * | 2023-06-16 | 2023-07-21 | Федеральное государственное бюджетное учреждение науки "Санкт-Петербургский Федеральный исследовательский центр Российской академии наук" | STAND FOR QUALIMETRY OF MEANS OF INDIVIDUAL HEAD PROTECTION AGAINST BIOLOGICAL FACTOR |
| RU219915U1 (en) * | 2023-06-16 | 2023-08-14 | Федеральное государственное бюджетное учреждение науки "Санкт-Петербургский Федеральный исследовательский центр Российской академии наук" | STAND FOR QUALIMETRY OF PERSONAL EYE PROTECTION AGAINST BIOLOGICAL FACTOR |
| RU219914U1 (en) * | 2023-06-16 | 2023-08-14 | Федеральное государственное бюджетное учреждение науки "Санкт-Петербургский Федеральный исследовательский центр Российской академии наук" | STAND FOR QUALIMETRY OF PERSONAL PROTECTION MEANS FROM BIOLOGICAL FACTOR |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US11026588B2 (en) | Methods and apparatus for detecting motion noise and for removing motion noise from physiological signals | |
| Goverdovsky et al. | In-ear EEG from viscoelastic generic earpieces: Robust and unobtrusive 24/7 monitoring | |
| US6974424B2 (en) | Palatometer and nasometer apparatus | |
| US11517708B2 (en) | Ear-worn electronic device for conducting and monitoring mental exercises | |
| JP2006340986A (en) | Face information detector and communication system by detecting face information | |
| CN109350051A (en) | The head wearable device and its working method with adjusting are assessed for the state of mind | |
| US20220355063A1 (en) | Hearing assistance devices with motion sickness prevention and mitigation features | |
| CN113260304A (en) | Physical therapy and vestibular training system employing visual feedback | |
| CN113554924A (en) | Bionic head model and system | |
| CN111657938A (en) | VR helmet automatically adapting to head contour for brain wave detection | |
| CN216249711U (en) | Bionic head model, system and head-mounted article detection system | |
| KR20150066407A (en) | Hair-wear having an auxiliary device for forming head or making space | |
| US11265643B2 (en) | Hearing device including a sensor and hearing system including same | |
| US20230397891A1 (en) | Ear-wearable devices for detecting, monitoring, or preventing head injuries | |
| US20220070596A1 (en) | Device to optically verify custom hearing aid fit and method of use | |
| CN109769186A (en) | A kind of In-Ear bone conduction auditory prosthesis | |
| CN215687825U (en) | Cap is kept apart to baby's nuclear magnetic resonance noise | |
| CN212307861U (en) | VR helmet automatically adapting to head contour for brain wave detection | |
| JP6553634B2 (en) | Cap with aid for profile correction or space formation | |
| CN111818839B (en) | Device for determining visual system | |
| CN207427401U (en) | A kind of VR glasses of assisting sleep | |
| JP6896209B2 (en) | Swallowing function measurement system | |
| Liu et al. | Optimal Choice for Improving the Hearing in Children with Unilateral Microtia and Atresia: Softband or Adhesive Adapter? | |
| CN218181827U (en) | Novel intelligent head-wearing device capable of being attached to face and silent voice recognition equipment | |
| CN209497599U (en) | A kind of In-Ear bone conduction auditory prosthesis |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |