CN113049087A - Electromagnetic type vibration sensor - Google Patents
Electromagnetic type vibration sensor Download PDFInfo
- Publication number
- CN113049087A CN113049087A CN202110514991.5A CN202110514991A CN113049087A CN 113049087 A CN113049087 A CN 113049087A CN 202110514991 A CN202110514991 A CN 202110514991A CN 113049087 A CN113049087 A CN 113049087A
- Authority
- CN
- China
- Prior art keywords
- sensor
- module
- inner cover
- induction
- induction coil
- 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.)
- Withdrawn
Links
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01H—MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
- G01H11/00—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by detecting changes in electric or magnetic properties
- G01H11/06—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by detecting changes in electric or magnetic properties by electric means
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Apparatuses For Generation Of Mechanical Vibrations (AREA)
Abstract
The invention relates to the technical field of sensors and discloses an electromagnetic type vibration sensor which comprises a sensor outer cover, wherein an installation seat is arranged on the outer wall of the right side of the sensor outer cover, a main controller is installed inside the installation seat, a sensor inner cover is arranged in the inner cavity of the sensor outer cover, a display lamp is installed on the outer wall of the sensor outer cover, a permanent magnet and an induction coil are arranged on the periphery of the sensor inner cover, an induction ball is arranged in the inner cavity of the sensor inner cover, and the induction ball is magnetized in the radial direction. The invention can directly obtain the vibration direction of the vibrator by utilizing the effect that the suspended sensing ball can move in multiple directions in the inner cover of the sensor, and can obtain the vibration amplitude of the vibrator by adjusting the diameter of the sensing current in the sensing coil, thereby carrying out multi-dimensional representation on the vibration condition of the vibrator and improving the functionality of the vibration sensor.
Description
Technical Field
The invention relates to the technical field of sensors, in particular to an electromagnetic type vibration sensor.
Background
The photovoltaic power generation equipment comprises a solar power generation assembly, a bracket system for supporting the solar power generation assembly and a photovoltaic power generation device for generating electricity
The electromagnetic vibration sensor changes vibration signal into electric signal based on electromagnetic induction principle and consists of magnetic circuit system, inertial mass, spring damper and other parts. The magnetic circuit system generates a constant direct current magnetic field, and a working air gap in the magnetic circuit is fixed and constant, so that the magnetic flux in the air gap is also constant and constant. The moving parts can be coils or magnets, and the working principles are completely the same. When the shell vibrates along with the tested vibrating body, the mass of the moving part is relatively large because the spring is soft, when the vibration frequency is high enough (far higher than the natural frequency of the sensor), the inertia of the moving part is large, the moving part does not vibrate along with the vibrating body and is almost motionless, the vibration energy is almost absorbed by the spring, the relative movement speed between the permanent magnet and the coil is close to the vibration speed of the vibrating body, and the relative movement between the magnet and the coil cuts magnetic lines of force, so that induced potential is generated.
The relative positions of the magnet and the coil are generally coaxial, so that magnetic lines of force are cut when the magnet and the coil move relatively, and the relative movement direction of the magnet and the coil limits the measurement direction of vibration. Therefore, the measuring direction of the vibration sensor is single, and the vibration sensor is troublesome to install, and some vibration bodies have more than a single vibration direction, such as a rotating shaft, and the vibration direction of the vibration sensor is continuously changed due to different damage degrees of different parts and other reasons in the rotating process, and the traditional vibration sensor cannot accurately represent the vibration condition of the vibration body.
Disclosure of Invention
Aiming at the defects of the existing electromagnetic vibration sensor in the background technology in the using process, the invention provides the electromagnetic vibration sensor which has the advantages of multi-directional measurement and convenient installation, and solves the problems that the installation is troublesome and the vibration condition of a vibrating body cannot be accurately represented in the background technology.
The invention provides the following technical scheme: the utility model provides an electromagnetic type vibration sensor, includes the sensor dustcoat, be equipped with the mount pad on the outer wall of the positive side of sensor dustcoat, the internally mounted of mount pad has main control unit, be equipped with the sensor inner cover in the inner chamber of sensor dustcoat, install the display lamp on the outer wall of sensor dustcoat, the periphery of sensor inner cover is equipped with permanent magnet and induction coil, be equipped with the response ball in the inner chamber of sensor inner cover, response ball radial magnetization, magnetic force between induction coil and the response ball makes the center of response ball suspension at the sensor inner cover, induction coil and display lamp all with main control unit electric connection, be connected with the lamp way switch on the return circuit of main control unit and display lamp.
Preferably, the number of the display lamps is thirteen, the number of the induction coils is the same as that of the display lamps, the induction coils are opposite in position, four of the display lamps are positioned on the outer wall of the same side of the section of the center of sphere of the sensor inner cover, one of the display lamps is positioned at the intersection point of the diameter of the sphere vertical to the section of the center of sphere and the outer wall of the sensor inner cover, and the rest of the display lamps are uniformly distributed at the intersection point of the diameter of the sphere forming an included angle of 45 degrees with the section of the center of sphere and the outer wall of the sensor inner cover.
Preferably, the inner cavity of the sensor inner cover is in a vacuum state, and the sensor inner cover is made of magnetic conductivity materials.
Preferably, the permanent magnets are uniformly arranged on the periphery of the inner sensor cover, the number of the permanent magnets is even, the permanent magnets above the sensing balls and the sensing balls attract each other, the permanent magnets below the sensing balls and the sensing balls repel each other, the sum of upward attraction and repulsion force borne by the sensing balls is the same as the gravity of the sensing balls, and the permanent magnets on the left side and the right side of the sensing balls are mutually repulsive and repulsive to the same as the sensing balls.
Preferably, the main controller includes a receiving module, a rectifying module, a comparing unit, a control module and a storage module, the storage module stores the corresponding relationship between the induction coil and the lamp circuit switch, the input end of the receiving module is connected with the induction coil, the output end of the receiving module is electrically connected to the input end of the rectifying module, the output end of the rectifying module is electrically connected to the input end of the comparing unit, the output end of the comparing unit is electrically connected to the input end of the control module, the output end of the control module is respectively connected to the driving unit and the transmission module, the driving unit controls the lamp circuit switch to operate, and the transmission module is connected to the control terminal.
Preferably, the rectification module includes a peak current obtaining module and a current amplifying unit, the induction coils are connected in parallel to the receiving module, the rectification module adjusts the current value of each induction coil at the same time, and the adjusting step is as follows:
s1: the peak current acquisition module acquires the maximum value of the induced current output by each induction coil and transmits the maximum value to the current amplification unit;
s2: the current amplifying unit is used for amplifying the maximum value of the induced current of the induction coil by the same time and transmitting the amplified maximum value to the comparing unit.
Preferably, the operation steps of the comparison unit are as follows:
s11: receiving the current values of all the adjusted induction coils transmitted by the rectifying module;
s22: taking the maximum value of all current values, and associating the lamp circuit switch corresponding to the maximum value by calling data in the storage module;
s33: and transmitting the information of the lamp circuit switch to the control module.
The invention has the following beneficial effects:
1. the invention can directly obtain the vibration direction of the vibrator by utilizing the effect that the suspended sensing ball can move in multiple directions in the inner cover of the sensor, and can obtain the vibration amplitude of the vibrator by adjusting the diameter of the sensing current in the sensing coil, thereby carrying out multi-dimensional representation on the vibration condition of the vibrator and improving the functionality of the vibration sensor.
2. According to the invention, the display lamp is arranged on the outer wall of the sensor outer cover, the vibration direction and the vibration amplitude of the vibration body can be intuitively obtained by utilizing the position of the display lamp and the brightness of the display lamp, so that the change of the vibration direction and the vibration amplitude of the vibration body is conveniently observed, and the practicability of the vibration sensor is improved.
3. The invention makes the sensing ball suspend in the sensor inner cover by using the permanent magnet, and abandons the traditional mode of connecting the sensing ball by using a spring, thereby making the sensing ball move in multiple directions, and the vibration direction of the vibrating body is not needed to be considered when the sensor is installed, thereby making the installation convenient and fast.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a side view of the present invention;
FIG. 3 is a front view of the present invention;
FIG. 4 is a rear view of the present invention;
FIG. 5 is a block diagram of a control system of the master controller of the present invention;
fig. 6 is a partial circuit schematic of the present invention.
In the figure: 1. a sensor housing; 2. a mounting seat; 3. a main controller; 301. a receiving module; 302. a rectification module; 3021. a peak current acquisition module; 3022. a current amplification unit; 303. a comparison unit; 304. a control module; 3041. a drive unit; 3042. a transmission module; 305. a storage module; 4. a sensor inner cover; 5. a permanent magnet; 6. an induction coil; 7. a display lamp; 8. a light circuit switch; 9. and a sensing ball.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-6, an electromagnetic vibration sensor includes a sensor housing 1, a mounting base 2 is disposed on an outer wall of a right side of the sensor housing 1, that is, the mounting base 2 is disposed on a left side or a right side of the sensor housing 1, the sensor housing 1 has a top, a bottom, a left side, and a right side, as shown in fig. 1, the mounting base 2 is disposed on the right side of the sensor housing 1, a main controller 3 is mounted inside the mounting base 2, a sensor inner cover 4 is disposed in an inner cavity of the sensor housing 1, an inner cavity of the sensor inner cover 4 is in a vacuum state, the sensor inner cover 4 is made of a magnetic conductive material, a display lamp 7 is mounted on the outer wall of the sensor housing 1, a cavity is formed between the sensor housing 1 and the sensor inner cover 4, a permanent magnet 5 and an induction coil 6 are disposed on an outer periphery of the sensor inner cover 4, the permanent magnet 5 and the induction coil 6 are, be equipped with induction ball 9 in the inner chamber of sensor inner cover 4, induction ball 9 is radial magnetization, and the magnetic force between induction coil 6 and the induction ball 9 makes induction ball 9 suspend at the center of sensor inner cover 4, and specific position is as follows: permanent magnet 5 evenly is located the periphery of sensor inner cover 4, the quantity of permanent magnet 5 is the even number, be located the permanent magnet 5 and the response ball 9 between the induction ball 9 top inter attraction, be located mutual repulsion between permanent magnet 5 and the response ball 9 of response ball 9 below, and the response ball 9 receives ascending appeal and repulsion sum and the gravity of response ball 9 the same, permanent magnet 5 that is located the response ball 9 left and right sides all repels each other and repulsion are the same with response ball 9, thereby make the center at sensor inner cover 4 that the response ball 9 can suspend, when sensor dustcoat 1, sensor inner cover 4 and mount pad 2 are along with the pendulum vibration, because the effect of inertia, response ball 9 suspends the center with sensor inner cover 4 all the time, and in the vibration in-process, sensor inner cover 4 constantly changes for the position of response ball 9.
Induction coil 6 and display lamp 7 all with main control unit 3 electric connection, be connected with lamp way switch 8 in the return circuit of main control unit 3 and display lamp 7, every induction coil 6, display lamp 7 and lamp way switch 8 all have the one-to-one relation, and corresponding display lamp 7, lamp way switch 8 establish ties, and multiunit display lamp 7, lamp way switch 8's circuit are parallelly connected.
The number of the display lamps 7 is thirteen, the number of the induction coils 6 is the same as that of the display lamps 7, and the induction coils are opposite in position, wherein four display lamps 7 are positioned on the outer wall of the same side of the section of the sphere center of the sensor inner cover 4, one display lamp 7 is positioned at the intersection point of the sphere diameter vertical to the section of the sphere center and the outer wall of the sensor inner cover 4, and the rest display lamps 7 are uniformly distributed at the intersection point of the sphere diameter forming an included angle of 45 degrees with the section of the sphere center and the outer wall of the sensor inner cover 4; in the scheme, the three-dimensional space where the sensing ball 9 is located is divided into twenty-six directions, and in the vibration process of the sensor inner cover 4, no matter which direction the vibration direction of the sensor inner cover 4 is, the moving track of the sensing ball 9 relative to the sensor inner cover 4 always passes through the center of the sensor inner cover 4 to form symmetrical distribution, and only the sensing ball 9 deviates from the center of the sensor inner cover 4, then only one sensing coil 6 is closest to the sensing ball 9, the sensing current value on the sensing coil 6 is the largest, and therefore thirteen sensing coils 6 and the display lamp 7 are arranged to obtain the vibration direction of the vibrator.
The main controller 3 includes a receiving module 301, a rectifying module 302, a comparing unit 303, a control module 304 and a storage module 305, the storage module 305 stores the corresponding relationship between the induction coil 6 and the lamp circuit switch 8, the input end of the receiving module 301 is connected to the induction coil 6, the output end of the receiving module 301 is electrically connected to the input end of the rectifying module 302, the output end of the rectifying module 302 is electrically connected to the input end of the comparing unit 303, the output end of the comparing unit 303 is electrically connected to the input end of the control module 304, the output end of the control module 304 is respectively connected to a driving unit 3041 and a transmission module 3042, the driving unit 3041 controls the lamp circuit switch 8 to operate, the transmission module 3042 is connected to a control terminal, and the transmission data of the transmission module 3042 includes the vibration direction of the vibrating body, i; and the amplitude of the vibration of the vibrating body, i.e. the magnitude of the current value passed into the display lamp 7 or the brightness of the display lamp 7.
The rectifying module 302 includes a peak current obtaining module 3021 and a current amplifying unit 3022, the induction coils 6 are connected in parallel to the receiving module 301, the rectifying module 302 simultaneously adjusts the current value of each induction coil 6, and the adjusting steps are as follows:
s1: the peak current obtaining module 3021 obtains the maximum value of the induced current output by each induction coil 6 and transmits the maximum value to the current amplifying unit 3022;
s2: the maximum value of the induced current of the induction coil 6 is amplified by the current amplifying unit 3022 by the same factor and transmitted to the comparing unit 303.
The operation steps of the comparing unit 303 are:
s11: receiving the current values of all the adjusted induction coils 6 transmitted by the rectifying module 302;
s22: taking the maximum value of all current values, and associating the lamp circuit switch 8 corresponding to the maximum value by calling data in the storage module 305;
s33: the information of the light switch 8 is transmitted to the control module 304.
The control module 304 controls the lamp circuit switch 8 to be closed, so that the corresponding display lamp 7 is turned on, the induced current of the induction coil 6 is adjusted and then transmitted to the display lamp 7 to provide electric energy for the display lamp 7, the brightness of the display lamp 7 visually displays the vibration amplitude of the vibrating body, and the position of the display lamp 7 visually displays the vibration direction of the vibrating body; and when the vibration sensor is installed, the installation seat 2 is directly installed on the vibration body, the vibration direction of the vibration body does not need to be considered, and the vibration sensor is very convenient.
In this embodiment, the induction coil 6 is not necessarily wound around the permanent magnet 5, and only when the positions of the induction coil 6 and the permanent magnet 5 are matched, the induction coil 6 needs to be wound around the permanent magnet 5, and when the induced current of the induction coil 6 is obtained, the current value generated by the action of the permanent magnet 5 on the permanent magnet 5 should be removed.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. The utility model provides an electromagnetic type vibration sensor, includes sensor dustcoat (1), be equipped with mount pad (2), its characterized in that on the outer wall of sensor dustcoat (1) dead side: the internally mounted of mount pad (2) has main control unit (3), be equipped with sensor inner cover (4) in the inner chamber of sensor dustcoat (1), install display lamp (7) on the outer wall of sensor dustcoat (1), the periphery of sensor inner cover (4) is equipped with permanent magnet (5) and induction coil (6), be equipped with induction ball (9) in the inner chamber of sensor inner cover (4), induction ball (9) radial magnetization, magnetic force between induction coil (6) and induction ball (9) makes induction ball (9) suspend at the center of sensor inner cover (4), induction coil (6) and display lamp (7) all with main control unit (3) electric connection, be connected with lamp switch (8) on the return circuit of main control unit (3) and display lamp (7).
2. An electromagnetic vibration sensor as defined in claim 1, wherein: the number of the display lamps (7) is thirteen, the number of the induction coils (6) is the same as that of the display lamps (7) and the induction coils are opposite, wherein the four display lamps (7) are positioned on the outer wall of the same side of the spherical center section of the sensor inner cover (4), one display lamp (7) is positioned at the intersection point of the spherical diameter perpendicular to the spherical center section and the outer wall of the sensor inner cover (4), and the rest display lamps (7) are uniformly distributed at the intersection point of the spherical diameter forming an included angle of 45 degrees with the spherical center section and the outer wall of the sensor inner cover (4).
3. An electromagnetic vibration sensor as defined in claim 1, wherein: the inner cavity of the sensor inner cover (4) is in a vacuum state, and the sensor inner cover (4) is made of magnetic conductivity materials.
4. An electromagnetic vibration sensor as defined in claim 1, wherein: the permanent magnet (5) are uniformly positioned on the periphery of the sensor inner cover (4), the number of the permanent magnets (5) is even, the permanent magnets (5) above the sensing balls (9) and the sensing balls (9) are attracted mutually, the permanent magnets (5) below the sensing balls (9) and the sensing balls (9) are repelled mutually, the sum of upward attraction and repulsion of the sensing balls (9) is the same as the gravity of the sensing balls (9), and the permanent magnets (5) on the left side and the right side of the sensing balls (9) are repelled mutually and have the same repulsion as the sensing balls (9).
5. An electromagnetic vibration sensor as defined in claim 1, wherein: the main controller (3) comprises a receiving module (301), a rectifying module (302), a comparing unit (303), a control module (304) and a storage module (305), the storage module (305) stores the corresponding relation between the induction coil (6) and the lamp circuit switch (8), the input end of the receiving module (301) is connected with the induction coil (6), the output end of the receiving module (301) is electrically connected to the input end of the rectifying module (302), the output end of the rectifying module (302) is electrically connected with the input end of the comparing unit (303), the output end of the comparison unit (303) is electrically connected with the input end of the control module (304), the output end of the control module (304) is respectively connected with a driving unit (3041) and a transmission module (3042), the driving unit (3041) controls the lamp circuit switch (8) to act, and the transmission module (3042) is connected to the control terminal.
6. An electromagnetic vibration sensor as defined in claim 5, wherein: the rectifying module (302) comprises a peak current obtaining module (3021) and a current amplifying unit (3022), the induction coils (6) are connected to the receiving module (301) in parallel, the rectifying module (302) adjusts the current value of each induction coil (6) at the same time, and the adjusting step is as follows:
s1: the maximum value of the induction current output by each induction coil (6) is acquired by a peak current acquisition module (3021) and is transmitted to a current amplification unit (3022);
s2: the maximum value of the induced current of the induction coil (6) is amplified by the current amplifying unit (3022) by the same factor and transmitted to the comparing unit (303).
7. An electromagnetic vibration sensor as defined in claim 6, wherein: the operation steps of the comparison unit (303) are as follows:
s11: receiving the current values of all the adjusted induction coils (6) transmitted by the rectifying module (302);
s22: taking the maximum value of all current values, and associating the lamp circuit switch (8) corresponding to the maximum value by calling data in the storage module (305);
s33: and transmitting the information of the light circuit switch (8) to the control module (304).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110514991.5A CN113049087A (en) | 2021-05-12 | 2021-05-12 | Electromagnetic type vibration sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110514991.5A CN113049087A (en) | 2021-05-12 | 2021-05-12 | Electromagnetic type vibration sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113049087A true CN113049087A (en) | 2021-06-29 |
Family
ID=76518521
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110514991.5A Withdrawn CN113049087A (en) | 2021-05-12 | 2021-05-12 | Electromagnetic type vibration sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113049087A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116698178A (en) * | 2023-08-04 | 2023-09-05 | 国网山东省电力公司费县供电公司 | Cable vibration measuring device for power grid |
-
2021
- 2021-05-12 CN CN202110514991.5A patent/CN113049087A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116698178A (en) * | 2023-08-04 | 2023-09-05 | 国网山东省电力公司费县供电公司 | Cable vibration measuring device for power grid |
| CN116698178B (en) * | 2023-08-04 | 2024-02-02 | 国网山东省电力公司费县供电公司 | Cable vibration measuring device for power grid |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR100671363B1 (en) | Dynamic magnet system | |
| CN106899233B (en) | A kind of Reed type bistable electromagnetic Piezoelectric anisotropy energy collecting device | |
| Zhang et al. | Magnetically levitated-triboelectric nanogenerator as a self-powered vibration monitoring sensor | |
| CN1647352B (en) | Multiple magnet transducer | |
| JP6563247B2 (en) | Micro projector device, magnetic levitation base and micro projector equipment | |
| CN112821708B (en) | Bistable electromagnetic-piezoelectric mixed vibration energy collector and self-powered sensing system | |
| CN2836332Y (en) | Oscillating power generator | |
| CN105680720A (en) | Multi-degree-of-freedom piezoelectric-electromagnetic composite multi-directional broadband kinetic energy collector | |
| CN113049087A (en) | Electromagnetic type vibration sensor | |
| CN103051146B (en) | Energy acquisition component | |
| CN202524321U (en) | Vertical-vibration horizontal-swinging type power generation device of low-frequency large-amplitude piezoelectric cantilever beam | |
| US20160276914A1 (en) | Multi-Axis Levitating Vibration Energy Harvester | |
| Mu et al. | Electromechanical coupling properties of a self-powered vibration sensing device for near-surface observation tower monitoring | |
| CN218600691U (en) | Passive vibration sensor | |
| CN210319023U (en) | Novel magnetic suspension mechanism for vibration and noise reduction of pipeline | |
| CN107453577B (en) | Multimode low-frequency electromagnetic vibration type energy collector based on MEMS | |
| CN111525769A (en) | Magnetic pendulum type electromagnetic-piezoelectric composite energy collector | |
| Zhang et al. | Magnetically levitated/piezoelectric/triboelectric hybrid generator as a power supply for the temperature sensor | |
| CN111122903A (en) | Self-powered electromagnetic motion perception sensor | |
| CN209283065U (en) | A kind of kinetic energy collecting sensor | |
| CN114577327A (en) | Bridge vibration monitoring devices based on electromagnetic conversion | |
| KR102114497B1 (en) | Device for generation of electricity using triboelectic | |
| CN210167944U (en) | Magnetic liquid plane composite multi-frequency vibration energy collector | |
| CN210167943U (en) | Magnetic liquid plane multi-frequency vibration energy collector | |
| CN213586268U (en) | Practical dustproof speaker at home |
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 | ||
| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20210629 |