Odor release device and method and head-mounted display

Abstract

The invention provides a smell releasing device which comprises a material bin used for storing capsules containing smell compounds; the pressure adjusting mechanism is communicated with the stock bin and is used for adjusting the air pressure in the stock bin so as to control whether the capsule is broken or not; the stock bin driving mechanism is connected with the stock bin; the driving circuit is electrically connected with the pressure adjusting mechanism and the stock bin driving mechanism and used for controlling the pressure adjusting mechanism to adjust the air pressure in the stock bin according to image information received in real time and controlling the stock bin driving mechanism to drive the stock bin to be opened or closed. And the odor compound is dispersed out of the stock bin when the stock bin is opened and the capsule is broken. The invention also provides a smell releasing method and a head-mounted display.

Description

Technical Field

[0001] The present application relates to an odor releasing device, an odor releasing method and a head mounted display. Background Art

[0002] With the development of science and technology, multi-sensory experience technology has gradually entered people's entertainment life. Virtual Reality (VR) and Augmented Reality (AR) technologies combine vision, hearing and touch to provide synthetic simulation experience and enhanced real vision respectively. 4D movies combine 3D vision, hearing and physical touch, such as vibration, swaying, tilting, blowing, spraying water, etc., to provide audiences with interactive and immersive experience. 5D movies go a step further and add smoke, rain, lightning, bubbles, and smell. The addition of smell makes the whole experience more real and rich, complementing other sensory stimulations. How to release the smell when needed is a problem that needs to be solved at present. Summary of the invention

[0003] The first aspect of the present application provides an odor release device, comprising: a silo for storing capsules containing odor compounds; A pressure regulating mechanism, connected to the silo, for regulating the air pressure in the silo to control whether the capsule ruptures; A silo driving mechanism, connected to the silo and used to drive the silo to open or close; The driving circuit is electrically connected to the pressure regulating mechanism and the silo driving mechanism, respectively, and is used to control the pressure regulating mechanism to adjust the air pressure in the silo according to the image information received in real time, and control the silo driving mechanism to drive the silo to open or close, so that the odor compound is emitted to the outside of the silo when the silo is opened and the capsule is ruptured.

[0004] In the above-mentioned odor release device, the capsule is located in the silo, and the driving circuit is used to control the pressure regulating mechanism to adjust the air pressure in the silo according to the image information received in real time, so that a pressure difference is generated between the air pressure inside the capsule and the air pressure outside the capsule. When the air pressure difference is greater than the preset air pressure difference, the capsule ruptures, and the odor compounds in the capsule are released into the silo. At this time, the driving circuit is also used to control the silo driving mechanism to drive the silo to open, so that the odor compounds in the silo are released outside the silo. When the odor release device is applied to a head-mounted display, the driving circuit releases the corresponding odor compounds according to the image displayed by the display device in the head-mounted display, so that the user can smell the corresponding odor while seeing the image, so that the user can get a better immersive experience.

[0005] Furthermore, the material bin includes a shell, a cover and a storage structure, the shell is rotatably connected to the cover, the shell is located between the cover and the drive circuit, and when the shell and the cover are in contact with each other, the material bin as a whole forms a closed first accommodating space; The storage structure is located in the first accommodating space and connected to the cover body for storing the capsule. The storage structure and the cover body together enclose a second accommodating space, and the capsule is located in the second accommodating space.

[0006] Furthermore, the surface of the storage structure is a microporous membrane structure, and the microporous membrane structure has a plurality of through holes, and the pore size of each through hole is smaller than the diameter of the capsule and larger than the diameter of the odor compound.

[0007] Furthermore, the odor release device further comprises a pressure sensor located in the silo, and the pressure sensor is used to sense the real-time air pressure in the silo; The driving circuit is electrically connected to the pressure sensor, and is used to control the pressure regulating mechanism to adjust the air pressure in the silo according to the real-time received image information and the real-time air pressure sent back by the pressure sensor.

[0008] Furthermore, when the pressure sensor senses that the pressure difference between the real-time air pressure in the silo and the preset air pressure is greater than the preset pressure difference, the drive circuit controls the pressure regulating mechanism to adjust the air pressure in the silo, and controls the silo drive mechanism to drive the silo to open.

[0009] Furthermore, the pressure regulating mechanism is an air pump or a pressure regulating valve, which is connected to the silo and is used to discharge the gas in the silo, thereby reducing the air pressure in the silo.

[0010] Furthermore, the pressure regulating mechanism is a heating element, which is used to increase the temperature in the silo, thereby increasing the air pressure in the silo.

[0011] A second aspect of the present application provides a method for releasing an odor, which is applied to a head-mounted display, wherein the head-mounted display comprises an odor releasing device and a display device connected to each other; The odor release method comprises: An image is received from the display device, and content of the image is identified.

[0012] When it is recognized that the image contains a target object, at least one odor release unit in the odor release device corresponding to the target object is selected as a target odor release unit; and The air pressure in the silo in the target odor release unit is adjusted and the silo is opened, so that the capsules stored in the silo are broken and the odor compounds in the capsules are released to the outside of the silo.

[0013] The above-mentioned odor releasing method, when applied to the above-mentioned odor releasing device, can achieve all the beneficial effects of the above-mentioned odor releasing device.

[0014] Furthermore, the step of adjusting the air pressure in the silo in the target odor release unit includes: sensing the real-time air pressure in the silo, and discharging the gas in the silo according to the real-time air pressure in the silo to reduce the air pressure in the silo; or The real-time air pressure in the silo is sensed, and the temperature in the silo is increased according to the real-time air pressure in the silo, thereby increasing the air pressure in the silo.

[0015] A third aspect of the present application provides a head mounted display, comprising: A scent release device as described in any of the above items; and A display device, electrically connected to the driving circuit, for displaying images; Wherein, the driving circuit is used to control the silo driving mechanism to drive the silo to open or close according to the image information.

[0016] For the above-mentioned head-mounted display, the above-mentioned odor release device is integrated, and all the beneficial effects of the above-mentioned odor release device can be achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 Schematic diagram of the structure of a head mounted display according to an embodiment of the present application.

[0018] Figure 2 This is a schematic diagram of a module of an odor release device according to an embodiment of the present application.

[0019] Figure 3 A schematic diagram of the structure of multiple silos.

[0020] Figure 4 for Figure 3 Schematic diagram of the structure when one of the silos is opened.

[0021] Figure 5 Schematic diagram of the flow of the odor release method according to an embodiment of the present application.

[0022] Main component symbols Head mounted display: 1 Scent release device: 100 Gas release unit: 101 Silo: 10 First accommodation space: 10a Housing: 11 Cover: 12 Storage structure: 13 Microporous membrane: 131 Through hole: 131a Pressure adjustment mechanism: 20 Silo drive mechanism: 30 Drive circuit: 40 Pressure sensor: 50 Display devices: 200 The following specific implementation methods will further illustrate the present application in conjunction with the above-mentioned drawings. DETAILED DESCRIPTION

[0023] The present application provides an odor releasing device and a head mounted display including the odor releasing device. The odor releasing device is used to release odor compounds according to an image displayed by the head mounted display, so that a user can smell an odor corresponding to the image content, thereby giving the user a more immersive experience.

[0024] See also Figure 1 The head mounted display 1 of the embodiment of the present application includes an odor release device 100, a display device 200 and an exhaust device 300, and the odor release device 100 is connected to the display device 200 and the exhaust device 300 respectively. When the user wears the head mounted display 1, the display device 100 is arranged corresponding to the user's eyes, so that the image light emitted by the display device 100 can be received by the user's eyes. The odor release device 100 and the exhaust device 300 are arranged at a position of the frame of the head mounted display 1 close to the user's nose, so that the odor compound released by the odor release device 100 can be smelled by the user through the exhaust device 300. The display device 200 is used to display images, the odor release device 100 is used to release odor compounds, and the exhaust device 300 is used to transmit the odor compounds released by the odor release device 100 to the user's nose, so that the user can smell the corresponding odor.

[0025] See also Figure 2The odor releasing device 100 of the embodiment of the present application includes a silo 10, a pressure regulating mechanism 20, a silo driving mechanism 30 and a driving circuit 40. The silo 10 is used to store capsules containing odor compounds. The pressure regulating mechanism 20 is in communication with the silo 10, and is used to adjust the air pressure in the silo 10 to control whether the capsules are broken or not. The silo driving mechanism 30 is connected to the silo 10, and is used to drive the silo 10 to open or close. The driving circuit 40 is electrically connected to the pressure regulating mechanism 20 and the silo driving mechanism 30, respectively, and is used to control the pressure regulating mechanism 20 to adjust the air pressure in the silo 10, and is used to control the silo driving mechanism 30 to drive the silo 10 to open or close according to the image information displayed by the display device 200 received in real time, so that the odor compounds are emitted to the outside of the silo 10 when the silo 10 is opened and the capsules are broken.

[0026] Please also read Figure 3 and Figure 4 In this embodiment, the odor release device 100 includes a plurality of odor release units 101, and each odor release unit 101 includes a silo, a pressure regulating mechanism, and a silo driving mechanism as described above. Each odor release unit 101 is connected to the same surface of the driving circuit 40. Each odor release unit 101 is in the shape of a long cylinder as a whole, and each odor release unit 101 is closely spaced and arranged on the surface of the driving circuit 40 to form a rectangular array including multiple rows and columns. Each odor release unit 101 has basically the same structure and function, and works independently of each other. The specific structure and function of one of the odor release units 101 will be described below as an example.

[0027] In each odor release unit 101, the silo 10 includes a shell 11 and a cover 12 that are rotatably connected. The shell 11 is located between the cover 12 and the drive circuit 40. The silo drive mechanism is electrically connected to the drive circuit 40 and is connected to the end of the shell 11 away from the cover 12, and is used to drive the shell 11 to rotate relative to the cover 12 in a preset direction, wherein the "preset direction" refers to the rotation direction of the shell when the shell 11 moves away from the cover 12. When the shell 11 and the cover 12 are screwed together, the silo 10 as a whole forms a closed first accommodating space 10a. After the shell 11 rotates relative to the cover 12 for a preset period of time under the drive of the silo drive mechanism, the cover 12 is screwed out from the shell 11 to open the first accommodating space 10a.

[0028] In this embodiment, the silo 10 of each odor release unit 101 further includes a storage structure 13, which is located in the first accommodating space 10a and connected to the cover body 12. The storage structure 13 and the cover body 12 together enclose a second accommodating space, and the capsule is located in the second accommodating space. The storage structure 13 is used to store one or more capsules containing odor compounds. The capsule can be made by emulsion polymerization, coprecipitation or spray drying. The capsules made by these methods are microcapsules, and the diameter of the microcapsules ranges from 1 to 1000 μm. When making capsules, corresponding capsules can be made by changing the materials used to make the capsules to meet different user needs.

[0029] The surface of the storage structure 13 is a microporous membrane structure 131, and the microporous membrane structure 131 has a plurality of through holes 131a, so that the second accommodation space is connected to the first accommodation space 10a. The aperture of each through hole 131a is smaller than the diameter of the capsule, so as to prevent the capsule from passing through the through hole 131a to the outside of the storage structure 13. The aperture of each through hole 131a is larger than the diameter of the odor compound, so that when the capsule is broken, the odor compound can pass through the through hole 131a to the outside of the storage structure 13. The multiple through holes 131a on the microcapsule structure 131 are evenly spaced, so that the odor compound in the second accommodation space is evenly emitted. By changing the aperture size of the through hole 131a, the microporous membrane structure 131 can store capsules with different diameters and filter odor compounds with different diameters. In addition to odor compounds, the capsule also contains other substances, such as liquids such as water and emulsions. After all capsules in a silo 10 are broken, the microporous membrane structure 131 is used to store other substances except the odor compound in the second accommodation space, preventing these substances from flowing into the first accommodation space 10a through the through hole 131a, affecting the secondary use of the silo 10. In this embodiment, the material used to make the microporous membrane structure 131 is an organic material, such as polyethylene (PE). This organic material is chemically resistant and high temperature resistant, so it has a long service life, which is conducive to reducing the maintenance cost of the microcapsule structure 131.

[0030] When the silo driving mechanism drives the shell 11 to rotate relative to the cover body 12 in a preset direction for a preset time and the capsule ruptures, the odor compound in the capsule first passes through the through hole 131a and is emitted into the first accommodating space 10a. Since the first accommodating space 10a is opened, the odor compound is emitted from the first accommodating space 10a to the outside of the silo 10, so that the user can smell the corresponding odor.

[0031] In another embodiment of the present application, different from the above embodiment, the silo 10 does not include the storage structure 13, and the capsules are directly stored in the first accommodation space 10a of the shell 11. The silo driving mechanism 30 is connected to the end of the shell 11 away from the cover 12, and is used to drive the shell 11 to rotate relative to the cover 12 in a preset direction, so as to open the silo 10, so that the odor compounds in the silo 10 are emitted to the outside of the silo 10 through the gap between the shell 11 and the cover 12.

[0032] In this embodiment, the pressure regulating mechanism 20 can be an air pump or a pressure regulating valve, which is connected to the shell 11 of the silo 10 and is used to discharge the gas in the silo 10, thereby reducing the air pressure in the silo 10, so that the air pressure difference between the air pressure inside the capsule and the air pressure outside the capsule (that is, the air pressure in the closed first accommodating space 10a) increases. When the air pressure difference between the real-time air pressure in the silo 10 and the preset air pressure is greater than the preset air pressure difference, the capsule is squeezed and ruptured, and the odor compound is released into the silo 10. Among them, "preset air pressure" refers to the original air pressure in the silo 10 before the pressure regulating mechanism 20 adjusts the air pressure in the silo 10, and "preset air pressure difference" refers to the air pressure difference between the air pressure inside the capsule and the air pressure outside the capsule that can cause the capsule to rupture.

[0033] In other embodiments, the pressure regulating mechanism 20 may be a heating element, which is used to increase the temperature in the silo 10, thereby increasing the air pressure in the silo 10. Since the capsule is located in the silo 10, the increase in the temperature in the silo 10 will cause the temperature in the capsule to increase, thereby increasing the air pressure in the capsule. That is, the increase in the temperature in the silo 10 will cause the increase in the air pressure in the silo 10 and the air pressure in the capsule. However, the volume of the silo 10 is larger than the volume of the capsule. According to the ideal gas law, the speed at which the air pressure in the silo 10 increases is slower than the speed at which the air pressure in the capsule increases. Therefore, the pressure regulating mechanism 20 continues to heat the silo, which will cause a pressure difference between the air pressure in the silo 10 and the air pressure in the capsule. When the pressure difference is greater than the preset pressure difference, the capsule ruptures, and the odor compound is released into the silo 10.

[0034] The odor release device 100 further includes a pressure sensor 50, which is located in the silo 10 and is used to sense the real-time air pressure in the silo 10 and convert the air pressure in the silo 10 into an electrical signal. The drive circuit 40 is electrically connected to the pressure sensor 50, and the drive circuit 40 is used to control the pressure regulating mechanism 20 to adjust the air pressure in the silo 10 according to the real-time received image information and the real-time air pressure (electrical signal) returned by the pressure sensor 50.

[0035] When the driving circuit 40 detects that the image information includes an object corresponding to the odor compound in the capsule, the driving circuit 40 controls the pressure regulating mechanism 20 to regulate the air pressure in the silo 10. When the pressure sensor 50 senses that the pressure difference between the real-time air pressure in the silo 10 and the preset air pressure is greater than the preset air pressure difference, the driving circuit 40 is used to control the pressure regulating mechanism 20 to stop regulating the air pressure in the silo 10 according to the real-time air pressure (electrical signal) in the silo 10 transmitted back by the pressure sensor 50. At this time, the capsule is squeezed and ruptured, and the odor compound in the capsule is released into the first accommodating space 10a. When the pressure sensor 50 senses that the pressure difference between the real-time air pressure in the silo 10 and the preset air pressure is greater than the preset air pressure difference, the driving circuit 40 is also used to control the pressure regulating mechanism 20 to stop regulating the pressure in the silo 10, and control the silo driving mechanism 30 to open the silo 10, so that the odor compound in the first accommodating space 10a is released to the outside of the silo 10, so that the user can smell the odor.

[0036] When the drive circuit 40 does not detect an object corresponding to the odor compound in the capsule included in the image information, the silo 10 remains closed. When the pressure sensor 50 senses a pressure difference between the real-time air pressure in the silo 10 and the preset air pressure, the drive circuit 40 controls the pressure regulating mechanism 20 to regulate the air pressure in the silo 10 so that the pressure difference between the real-time air pressure in the silo 10 and the preset air pressure is less than the preset pressure difference, thereby preventing the capsule from rupturing.

[0037] In this embodiment, the capsules stored in the same odor release unit 101 contain the same type of odor compounds, and the capsules stored in different odor release units 101 may contain the same or different odor compounds. When the capsules in different odor release units 101 contain different odor compounds, the driving circuit 40 is used to identify the content in the image from the display device, and select to open the silo 10 of at least one odor release unit 101 corresponding to the content in the image according to the content in the image, so as to release the corresponding at least one odor compound.

[0038] The odor release device 100 of the embodiment of the present application includes one or more silos 10 storing capsules, and the pressure regulating mechanism 20 is connected to the silo 10 for regulating the air pressure in the silo 10. The driving circuit 40 is electrically connected to the pressure regulating mechanism 20, and is used to control the pressure regulating mechanism 20 to adjust the air pressure in the silo 10 according to the image received in real time from the display device 200. When the driving circuit 40 detects that the image information includes an object corresponding to the odor compound in the capsule, the driving circuit 40 controls the pressure regulating mechanism 20 to adjust the air pressure in the silo 10 so that the air pressure difference between the real-time air pressure in the silo 10 and the preset air pressure is greater than the preset air pressure difference. At this time, the capsule is squeezed and ruptured, and the odor compound is released into the first accommodation space 10a of the silo 10. The driving circuit 40 also controls the silo driving mechanism 30 to drive the silo 10 to open, and release the odor compound in the first accommodation space 10a to the outside of the silo 10, so that the user can smell the corresponding odor while seeing the image from the display device 200, so that the user can get a better immersive experience.

[0039] In addition, the odor release device 100 further includes a pressure sensor 50 for sensing the real-time air pressure in the silo 10, and the driving circuit 40 controls the pressure regulating mechanism 20 to adjust the air pressure in the silo 10 according to the real-time air pressure in the silo. When the driving circuit 40 does not detect that the image information includes an object corresponding to the odor compound, if the pressure sensor 50 senses that the air pressure difference between the air pressure in the silo 10 and the preset air pressure is too large, the driving circuit 40 can control the pressure regulating mechanism 30 to adjust the air pressure in the silo 10 to reduce the air pressure difference, prevent the capsule from rupturing, and thus reduce the waste of capsules.

[0040] The present application also provides a method for releasing odor, which is applied to the head mounted display. Figure 5 , the odor release method comprises the following steps: S1, receiving an image from a display device, identifying the image content, and determining whether the image contains a target object.

[0041] If the judgment is yes, execute: Step S2, selecting at least one odor release unit corresponding to the target object as a target odor release unit; and Step S3, adjusting the air pressure in the silo in the target odor release unit and opening the silo, so that the capsules stored in the silo are broken, and the odor compounds in the capsules are released to the outside of the silo.

[0042] If the judgment is no, step S4 is executed to maintain the air pressure in the silo and keep the silo closed.

[0043] In step S1, an image from a display device is received by a driving circuit, and the image content is identified. The driving circuit stores feature information corresponding to a target object, and the feature information corresponding to the target object includes the shape of the contour of the target object, the color of the target object, and the like.

[0044] The step of determining whether the image contains the target object includes: extracting feature information of the object in the image through a driving circuit, comparing the feature information of the object in the image with feature information of the target object already in the driving circuit; if the feature information of the object in the image is the same as the feature information of the target object, then the image contains the target object, and steps S2 and S3 are executed in sequence; if the feature information of the object in the image is different from the feature information of the target object, then the image does not contain the target object, and step S4 is executed.

[0045] In step S2, an odor releasing unit stores an odor compound, and the driving circuit stores characteristic information of a target object corresponding to the odor compound. When the driving circuit detects that the image contains a target object, the driving circuit selects at least one odor releasing unit corresponding to the target object as a target odor releasing unit according to the characteristic information of the target object, and the odor of the odor compound stored in the target odor releasing unit is the same as the odor emitted by the target object.

[0046] In step S3, in this embodiment, the step of adjusting the air pressure in the silo in the target odor release unit includes: sensing the real-time air pressure in the silo by a pressure sensor, and the driving circuit controls the pressure regulating mechanism to discharge the gas in the silo according to the real-time air pressure in the silo transmitted back by the pressure sensor, thereby reducing the air pressure in the silo.

[0047] The step of rupturing the capsules stored in the silo and emitting the odor compounds in the capsules to the outside of the silo comprises: after the pressure regulating mechanism makes the pressure difference between the real-time air pressure in the silo and the preset air pressure greater than the preset pressure difference, the capsules in the silo rupture and the odor compounds in the capsules emit into the first accommodation space of the silo; After the pressure sensor senses that the pressure difference between the real-time air pressure in the silo and the preset air pressure is greater than the preset pressure difference, the drive circuit controls the pressure sensor to stop adjusting the air pressure in the silo, and controls the silo drive mechanism to open the silo, so that the odor compounds in the first containing space are released to the outside of the silo.

[0048] In another embodiment of the present application, different from the above-mentioned embodiment, the step of adjusting the air pressure in the silo in the target odor release unit includes: sensing the real-time air pressure in the silo by a pressure sensor, and the driving circuit controls the pressure regulating mechanism to increase the temperature in the silo according to the real-time air pressure in the silo transmitted back by the pressure sensor, thereby increasing the air pressure in the silo.

[0049] Since the capsule is located in the silo, the increase in temperature in the silo will also cause the temperature in the capsule to increase, thereby increasing the air pressure in the capsule. The volume of the silo is larger than the volume of the capsule. According to the ideal gas law, the rate at which the air pressure in the silo increases is slower than the rate at which the air pressure in the capsule increases. Therefore, the pressure regulating mechanism continues to heat the silo, which will cause a pressure difference between the air pressure in the silo and the air pressure in the capsule. When the pressure difference is greater than the preset pressure difference, the capsule ruptures, allowing the odor compounds in the capsule to be released into the silo.

[0050] In step S4, the step of maintaining the air pressure in the silo includes: when the pressure sensor senses a pressure difference between the real-time air pressure in the silo and the preset air pressure, the drive circuit controls the pressure regulating mechanism 20 to adjust the air pressure in the silo 10, so that the pressure difference between the real-time air pressure in the silo 10 and the preset air pressure is less than the preset pressure difference, thereby preventing the capsule from rupturing.

[0051] The above-mentioned odor release method controls the pressure adjustment mechanism to adjust the air pressure in the silo according to the image from the display device in the head-mounted display, so that a pressure difference is generated between the air pressure inside the capsule and the air pressure outside the capsule. When the air pressure difference is greater than the preset air pressure difference, the capsule ruptures and the odor compound in the capsule is released into the silo. The odor release method allows the user to smell the odor corresponding to the object in the image while seeing the image displayed by the head-mounted display, thereby giving the user a more realistic and rich experience.

[0052] Those skilled in the art should recognize that the above embodiments are only used to illustrate the present application and are not intended to be limiting of the present application. As long as they are within the spirit and scope of the present application, appropriate changes and modifications to the above embodiments are within the scope of protection claimed in the present application.

Claims

1. An odor releasing device, characterized in that: include: a silo for storing capsules containing odor compounds; A pressure regulating mechanism, connected to the silo, for regulating the air pressure in the silo to control whether the capsule ruptures; A silo driving mechanism, connected to the silo and used to drive the silo to open or close; The driving circuit is electrically connected to the pressure regulating mechanism and the silo driving mechanism, respectively, and is used to control the pressure regulating mechanism to adjust the air pressure in the silo according to the image information received in real time, and control the silo driving mechanism to drive the silo to open or close, so that the odor compound is emitted to the outside of the silo when the silo is opened and the capsule is ruptured.

2. The odor release device according to claim 1, characterized in that The material bin comprises a shell, a cover and a storage structure, wherein the shell is rotatably connected to the cover, the shell is located between the cover and the driving circuit, and when the shell and the cover are in contact with each other, the material bin as a whole forms a closed first accommodating space; The storage structure is located in the first accommodating space and connected to the cover body for storing the capsule. The storage structure and the cover body together enclose a second accommodating space, and the capsule is located in the second accommodating space.

3. The odor release device according to claim 2, characterized in that The surface of the storage structure is a microporous membrane structure, and the microporous membrane structure has a plurality of through holes. The pore size of each through hole is smaller than the diameter of the capsule and larger than the diameter of the odor compound.

4. The odor release device according to claim 1, characterized in that The odor release device further comprises a pressure sensor located in the silo, the pressure sensor being used to sense the real-time air pressure in the silo; The driving circuit is electrically connected to the pressure sensor, and is used to control the pressure regulating mechanism to adjust the air pressure in the silo according to the real-time received image information and the real-time air pressure sent back by the pressure sensor.

5. The odor release device according to claim 4, characterized in that When the pressure sensor senses that the pressure difference between the real-time air pressure in the silo and the preset air pressure is greater than the preset pressure difference, the drive circuit controls the pressure regulating mechanism to adjust the air pressure in the silo, and controls the silo drive mechanism to drive the silo to open.

6. The odor release device according to claim 1, characterized in that The pressure regulating mechanism is an air pump or a pressure regulating valve, which is connected to the silo and is used to discharge the gas in the silo, thereby reducing the air pressure in the silo.

7. The odor release device according to claim 1, characterized in that: The pressure regulating mechanism is a heating element, which is used to increase the temperature in the silo, thereby increasing the gas pressure in the silo.

8. A method for releasing odor, characterized in that: Applied to a head mounted display, the head mounted display comprising an odor releasing device and a display device connected to each other; The odor release method comprises: receiving an image from the display device and identifying content of the image; When it is recognized that the image contains a target object, at least one odor release unit in the odor release device corresponding to the target object is selected as a target odor release unit; and The air pressure in the silo in the target odor release unit is adjusted and the silo is opened, so that the capsules stored in the silo are broken and the odor compounds in the capsules are released to the outside of the silo.

9. The odor releasing method according to claim 8, characterized in that: The step of adjusting the air pressure in the silo in the target odor release unit comprises: sensing the real-time air pressure in the silo, and discharging the gas in the silo according to the real-time air pressure in the silo to reduce the air pressure in the silo; or The real-time air pressure in the silo is sensed, and the temperature in the silo is increased according to the real-time air pressure in the silo, thereby increasing the air pressure in the silo.

10. A head mounted display, characterized in that: include: The odor releasing device according to any one of claims 1 to 7; as well as A display device, electrically connected to the driving circuit, for displaying images; Wherein, the driving circuit is used to control the silo driving mechanism to drive the silo to open or close according to the image information.

Images