CN107801125A - A kind of intelligent sound box control system with microwave radar sensing - Google Patents
A kind of intelligent sound box control system with microwave radar sensing Download PDFInfo
- Publication number
- CN107801125A CN107801125A CN201711263849.8A CN201711263849A CN107801125A CN 107801125 A CN107801125 A CN 107801125A CN 201711263849 A CN201711263849 A CN 201711263849A CN 107801125 A CN107801125 A CN 107801125A
- Authority
- CN
- China
- Prior art keywords
- microwave radar
- unit
- circuit
- control system
- information
- 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
- 230000008447 perception Effects 0.000 claims abstract description 20
- 230000035945 sensitivity Effects 0.000 claims abstract description 16
- 238000012545 processing Methods 0.000 claims description 23
- 238000004891 communication Methods 0.000 claims description 3
- 230000004044 response Effects 0.000 claims description 2
- 230000003993 interaction Effects 0.000 abstract description 7
- 230000006870 function Effects 0.000 abstract description 3
- 230000037007 arousal Effects 0.000 abstract 1
- 230000001360 synchronised effect Effects 0.000 abstract 1
- 230000006698 induction Effects 0.000 description 7
- 238000003491 array Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 238000013473 artificial intelligence Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000004148 unit process Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R3/00—Circuits for transducers, loudspeakers or microphones
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R2420/00—Details of connection covered by H04R, not provided for in its groups
- H04R2420/03—Connection circuits to selectively connect loudspeakers or headphones to amplifiers
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Radar Systems Or Details Thereof (AREA)
Abstract
The invention discloses a kind of intelligent sound box control system with microwave radar sensing, including pick up facility, for gathering voice messaging；Playback equipment, the language message gathered for playing the pick up facility；Microwave radar unit, for detecting person body orientation perception information, and sent when determining that personnel enter or the default working range of the microwave radar unit be present according to the person body orientation perception information to main control unit and wake up instruction；Main control unit, wake-up for receiving the microwave radar unit instructs and pick up facility described in synchronized wake-up and the playback equipment, and for receiving the person body orientation perception information and the sensitivity of the pick up facility being adjusted according to the person body orientation perception information.The intelligent sound box control system, it can not only realize remote arousal function, but also can obtain good man-machine interaction experience sense.
Description
Technical Field
The invention relates to the technical field of audio systems, in particular to an intelligent sound box control system with microwave radar induction.
Background
Along with the appearance of artificial intelligence AI, intelligent sound box has been pushed to intelligent control's wind gap wave tip as the control entry of intelligent house. Smart speakers typically use multiple microphones and multiple speakers to form a 360 degree omni-directional sound pickup. The structure is complicated and the cost is high. And the plurality of microphones and the MCU are in working states at all times so as to quickly respond when receiving external sound instructions.
When the intelligent sound box is used, voice awakening (for example, a command such as hello) is needed, or key awakening is carried out, and the sound box enters a voice recognition state by touching a set key so as to start man-machine interaction.
The user needs to send a wake-up command first to wait for the system to wake up. During the waiting period, the voice information cannot be recognized or the recognition is wrong.
For the accuracy of voice acquisition, a voice system usually adopts 6 or 8 microphone arrays or MEMS arrays to achieve omnidirectional voice information acquisition, which is not only high in cost, but also complex in design and production. Meanwhile, due to the existence of a plurality of microphone arrays, all-around sound information can be collected. The method for screening out really useful human voice information from complex information is a complex system, and a complex algorithm needs to be operated to improve the accuracy of voice recognition, but the accuracy of the system is reduced due to the serious problem of delayed response, so that the human-computer interaction experience is greatly influenced.
Therefore, an intelligent sound box control system capable of realizing remote awakening and good human-computer interaction experience is urgently needed.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention aims to provide an intelligent sound box control system with microwave radar induction, which not only can realize a remote awakening function, but also can obtain good human-computer interaction experience.
In order to solve the technical problems, the technical scheme adopted by the invention specifically comprises the following contents:
an intelligent sound box control system with microwave radar induction comprises
The pickup equipment is used for collecting voice information;
the playing device is used for playing the language information collected by the sound pickup device;
the microwave radar unit is used for detecting human body direction sensing information and sending a wake-up instruction to the main control unit when determining that personnel enter or exist in a preset working range of the microwave radar unit according to the human body direction sensing information;
and the main control unit is used for receiving the awakening instruction of the microwave radar unit, awakening the pickup equipment and the playing equipment synchronously, receiving the human body direction perception information and adjusting the sensitivity of the pickup equipment according to the human body direction perception information.
Preferably, the sound pickup apparatus includes a microphone array and an audio pickup unit; the language information is transmitted to the main control unit through the microphone array and the audio acquisition unit in sequence, and then transmitted to the playing equipment through the main control unit.
Preferably, the main control unit adjusts the sensitivity of each input channel of the audio acquisition unit according to the human body orientation perception information.
Preferably, the microphone array consists of 4 or 6 or 8 microphones, or is a MEMS microphone array.
Preferably, the playing device includes an audio processing unit and a speaker, and the main control unit sends the language information to the speaker through the audio processing unit.
Preferably, the microwave radar unit includes a receiving circuit, a mixing circuit, an intermediate frequency amplifying circuit, a signal processing circuit, and a transmitting circuit; the receiving circuit sends the awakening instruction and the human body direction perception information to the main control unit through the mixing circuit, the intermediate frequency amplifying circuit, the signal processing circuit and the transmitting circuit in sequence.
Preferably, the main control unit mainly comprises a communication circuit, an arithmetic circuit, a control circuit and a storage circuit.
Preferably, the human body orientation perception information includes, but is not limited to, moving direction information, orientation information, and distance information of the human body.
Preferably, the preset working range is a circular area range with the microwave radar unit as a circle center and the radius of 2 meters.
Preferably, the intelligent sound box control system with microwave radar induction further comprises a power supply processing circuit, and the power supply processing circuit is used for supplying power to the pickup equipment, the microwave radar unit, the playing equipment and the main control unit.
Compared with the prior art, the invention has the following beneficial technical effects:
the intelligent sound box control system with microwave radar induction provided by the invention adopts the microwave radar unit to replace the voice awakening or key awakening mode in the prior art, so that the function of remotely awakening the sound box system is realized.
2, the microwave radar unit detects the human body direction perception information to realize sensitivity adjustment on the pickup equipment, so that the sensitivity of voice signal acquisition in a useful direction is improved, the voice recognition accuracy is greatly improved, the accuracy reaches more than 70%, and better human-computer interaction experience is realized.
The foregoing description is only an overview of the technical solutions of the present invention, and in order to make the technical means of the present invention more clearly understood, the present invention may be implemented in accordance with the content of the description, and in order to make the above and other objects, features, and advantages of the present invention more clearly understood, the following preferred embodiments are described in detail with reference to the accompanying drawings.
Drawings
Fig. 1 is a schematic circuit structure diagram of the intelligent sound box control system with microwave radar sensing of the present invention.
Detailed Description
To further illustrate the technical means and effects of the present invention adopted to achieve the predetermined objects, the following detailed description of the embodiments, structures, features and effects according to the present invention with reference to the accompanying drawings and preferred embodiments is as follows:
as shown in fig. 1, the intelligent sound box control system with microwave radar sensing of the present invention includes a sound pickup device for collecting voice information; the playing device is used for playing the language information collected by the sound pickup device; the microwave radar unit is used for detecting human body direction sensing information and sending a wake-up instruction to the main control unit when determining that personnel enter or exist in a preset working range of the microwave radar unit according to the human body direction sensing information; and the main control unit is used for receiving the awakening instruction of the microwave radar unit, awakening the pickup equipment and the playing equipment synchronously, receiving the human body direction perception information and adjusting the sensitivity of the pickup equipment according to the human body direction perception information.
Wherein,
the microwave radar unit adopts a radio frequency technology with 24Ghz or higher frequency, and is matched with the omnidirectional antenna to realize 360-degree monitoring. The microwave radar unit comprises a transmitting circuit, a receiving circuit, a mixing circuit, an intermediate frequency amplifying circuit and a signal processing circuit. The signal processing circuit analyzes human body sensing information such as the distance, the direction, the moving direction and the like of the human body and sends the human body sensing information to the main control unit through the transmitting circuit of the serial port. The microwave radar unit has the working process that: the microwave radar unit monitors whether a person exists in a preset working range (for example, a circular working range with the microwave main control unit as a circle center and the radius of 2 meters) or not or whether the person enters the range, and the microwave radar unit uploads the information to serve as a wake-up instruction to the main control unit.
The pickup equipment comprises a microphone array and an audio acquisition unit; the language information is transmitted to the main control unit through the microphone array and the audio acquisition unit in sequence, and then transmitted to the playing equipment through the main control unit. In order to achieve omnidirectional sound pick-up, the microphone array is composed of 4 or 6 or 8 microphones, or is a MEMS microphone array. Of course, the number of microphones constituting the microphone array of the present invention is not limited to the aforementioned specific number, and those skilled in the art can easily understand that the larger the number of microphones, the easier it is to achieve omnidirectional sound pickup.
The playing device comprises an audio processing unit and a loudspeaker, and the main control unit sends the language information to the loudspeaker through the audio processing unit.
The main control unit is a system core, mainly comprises a communication circuit, an operation circuit, a control circuit and a storage circuit, and is responsible for processing recognition of voice information, control of related equipment and processing of cloud or network end setting instructions. The main control unit also adjusts the sensitivity of each input channel of the audio acquisition unit according to the human body direction perception information.
The power supply processing circuit is used for supplying power to the pickup equipment, the microwave radar unit, the playing equipment and the main control unit. The system is particularly used for supplying power to an audio acquisition unit of pickup equipment, a microwave radar unit, an audio processing unit of playing equipment and a main control unit.
The microwave radar unit always detects the human body direction sensing information, and immediately awakens the main control unit, the sound pickup equipment and the playing equipment once the person is analyzed and known to enter the preset working range of the microwave radar unit from the detected human body direction sensing information, so that compared with the existing voice recognition and key triggering, the recognition error is avoided, the recognition waiting time is reduced, and a sound box system can be awakened remotely. Moreover, the sensitivity of the pickup equipment can be adjusted by detecting the human body position sensing information through the microwave radar unit, so that the sensitivity of voice signal acquisition in a useful direction is improved, the voice recognition accuracy is greatly improved, and better human-computer interaction experience is realized.
The working steps of the intelligent sound box control system with microwave radar induction provided by the invention are as follows:
the microwave radar unit is always in a working state, and a detection field is formed around the system.
The first step is as follows: when personnel enter or exist in a preset working range, the microwave radar unit sends a wake-up instruction;
the second step is that: the microwave radar unit processes the microwave signals, selects human body sensing information such as the distance, the direction, the moving direction and the like of a human body, and reports the human body sensing information to the main control unit through a transmitting circuit of a serial port;
the third step: the main control unit is awakened, and simultaneously an audio acquisition unit of the pickup equipment and an audio processing unit of the playing equipment are awakened to enter a working state;
the fourth step: when the system is designed, the position and the angle of a microphone of the sound pickup equipment are preset. The main control unit respectively adjusts the sensitivity of each input channel of the audio acquisition unit in the corresponding working range according to the human body perception information. For example, the sensitivity of the input channel of the audio acquisition unit is adjusted according to the human body perception information, namely the human body direction, the sensitivity of the input channel corresponding to the direction is improved to 100%, the sensitivity of the input channel in the directions at two sides, particularly the input channel in the direction within +/-90 degrees, is reduced to 60%, and the sensitivity of the input channel in the direction away from the direction within 180 degrees is reduced to 30%;
the fifth step: uploading the language information acquired by the audio acquisition unit to a main control unit for system identification and processing;
and a sixth step: and aiming at the identified content, sending a control instruction to an audio processing unit, and playing the language information through a loudspeaker.
The above embodiments are only preferred embodiments of the present invention, and the protection scope of the present invention is not limited thereby, and any insubstantial changes and substitutions made by those skilled in the art based on the present invention are within the protection scope of the present invention.
Claims (10)
1. The utility model provides an intelligent audio amplifier control system with microwave radar response which characterized in that: comprises that
The pickup equipment is used for collecting voice information;
the playing device is used for playing the language information collected by the sound pickup device;
the microwave radar unit is used for detecting human body direction sensing information and sending a wake-up instruction to the main control unit when determining that personnel enter or exist in a preset working range of the microwave radar unit according to the human body direction sensing information;
and the main control unit is used for receiving the awakening instruction of the microwave radar unit, awakening the pickup equipment and the playing equipment synchronously, receiving the human body direction perception information and adjusting the sensitivity of the pickup equipment according to the human body direction perception information.
2. The smart speaker control system with microwave radar sensing of claim 1, wherein: the pickup equipment comprises a microphone array and an audio acquisition unit; the language information is transmitted to the main control unit through the microphone array and the audio acquisition unit in sequence, and then transmitted to the playing equipment through the main control unit.
3. The smart speaker control system with microwave radar sensing of claim 2, wherein: and the main control unit adjusts the sensitivity of each input channel of the audio acquisition unit according to the human body direction perception information.
4. The smart speaker control system with microwave radar sensing of claim 2, wherein: the microphone array is composed of 4 or 6 or 8 microphones, or is a MEMS microphone array.
5. The smart speaker control system with microwave radar sensing of claim 2, wherein: the playing device comprises an audio processing unit and a loudspeaker, and the main control unit sends the language information to the loudspeaker through the audio processing unit.
6. A smart loudspeaker control system with microwave radar sensing according to any one of claims 1 to 5, characterised in that: the microwave radar unit comprises a receiving circuit, a mixing circuit, an intermediate frequency amplifying circuit, a signal processing circuit and a transmitting circuit; the receiving circuit sends the awakening instruction and the human body direction perception information to the main control unit through the mixing circuit, the intermediate frequency amplifying circuit, the signal processing circuit and the transmitting circuit in sequence.
7. A smart loudspeaker control system with microwave radar sensing according to any one of claims 1 to 5, characterised in that: the main control unit mainly comprises a communication circuit, an arithmetic circuit, a control circuit and a storage circuit.
8. A smart loudspeaker control system with microwave radar sensing according to any one of claims 1 to 5, characterised in that: the human body orientation perception information includes, but is not limited to, moving direction information, orientation information, and distance information of the human body.
9. A smart loudspeaker control system with microwave radar sensing according to any one of claims 1 to 5, characterised in that: the preset working range is a circular area range with the microwave radar unit as a circle center and the radius of 2 meters.
10. A smart loudspeaker control system with microwave radar sensing according to any one of claims 1 to 5, characterised in that: still include power supply processing circuit, power supply processing circuit is used for pickup equipment, microwave radar unit, playback devices and main control unit power supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711263849.8A CN107801125A (en) | 2017-12-04 | 2017-12-04 | A kind of intelligent sound box control system with microwave radar sensing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711263849.8A CN107801125A (en) | 2017-12-04 | 2017-12-04 | A kind of intelligent sound box control system with microwave radar sensing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107801125A true CN107801125A (en) | 2018-03-13 |
Family
ID=61538220
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711263849.8A Pending CN107801125A (en) | 2017-12-04 | 2017-12-04 | A kind of intelligent sound box control system with microwave radar sensing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107801125A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108831451A (en) * | 2018-03-30 | 2018-11-16 | 广东思派康电子科技有限公司 | Computer readable storage medium and voice recognition sound box using same |
| CN109817206A (en) * | 2018-12-20 | 2019-05-28 | 航天信息股份有限公司 | A kind of voice interaction device and method for automatic terminal equipment |
| CN110085235A (en) * | 2019-05-05 | 2019-08-02 | 珠海格力电器股份有限公司 | voice control method and device |
| CN110853330A (en) * | 2019-11-29 | 2020-02-28 | 潘江 | Voice system microwave sound wave infrared power saving module and intelligent device awakening system |
| CN110867932A (en) * | 2019-11-29 | 2020-03-06 | 潘江 | Microwave sound wave infrared induction multi-path power supply system of intelligent and sound control equipment |
| CN111376244A (en) * | 2018-12-27 | 2020-07-07 | 深圳市优必选科技有限公司 | A robot wake-up method, system and robot |
| CN113628617A (en) * | 2020-05-09 | 2021-11-09 | 西安电子科技大学青岛计算技术研究院 | Intelligent voice equipment control method based on millimeter wave radar |
| CN114885254A (en) * | 2022-04-30 | 2022-08-09 | 上海浩宜信息科技有限公司 | Pick-up device with human body induction function |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101740028A (en) * | 2009-11-20 | 2010-06-16 | 四川长虹电器股份有限公司 | Voice control system of household appliance |
| CN102804806A (en) * | 2009-06-23 | 2012-11-28 | 诺基亚公司 | Method and device for processing audio signals |
| CN104284485A (en) * | 2014-09-26 | 2015-01-14 | 生迪光电科技股份有限公司 | Intelligent lighting device, lighting system and intelligent lighting control method |
| CN104703090A (en) * | 2013-12-05 | 2015-06-10 | 北京东方正龙数字技术有限公司 | Automatic adjustment pick-up equipment based on face recognition and automatic adjustment method |
| CN106782584A (en) * | 2016-12-28 | 2017-05-31 | 北京地平线信息技术有限公司 | Audio signal processing apparatus, method and electronic equipment |
-
2017
- 2017-12-04 CN CN201711263849.8A patent/CN107801125A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102804806A (en) * | 2009-06-23 | 2012-11-28 | 诺基亚公司 | Method and device for processing audio signals |
| CN101740028A (en) * | 2009-11-20 | 2010-06-16 | 四川长虹电器股份有限公司 | Voice control system of household appliance |
| CN104703090A (en) * | 2013-12-05 | 2015-06-10 | 北京东方正龙数字技术有限公司 | Automatic adjustment pick-up equipment based on face recognition and automatic adjustment method |
| CN104284485A (en) * | 2014-09-26 | 2015-01-14 | 生迪光电科技股份有限公司 | Intelligent lighting device, lighting system and intelligent lighting control method |
| CN106782584A (en) * | 2016-12-28 | 2017-05-31 | 北京地平线信息技术有限公司 | Audio signal processing apparatus, method and electronic equipment |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108831451A (en) * | 2018-03-30 | 2018-11-16 | 广东思派康电子科技有限公司 | Computer readable storage medium and voice recognition sound box using same |
| CN109817206A (en) * | 2018-12-20 | 2019-05-28 | 航天信息股份有限公司 | A kind of voice interaction device and method for automatic terminal equipment |
| CN111376244A (en) * | 2018-12-27 | 2020-07-07 | 深圳市优必选科技有限公司 | A robot wake-up method, system and robot |
| CN111376244B (en) * | 2018-12-27 | 2021-10-29 | 深圳市优必选科技有限公司 | Robot awakening method and system and robot |
| CN110085235A (en) * | 2019-05-05 | 2019-08-02 | 珠海格力电器股份有限公司 | voice control method and device |
| CN110853330A (en) * | 2019-11-29 | 2020-02-28 | 潘江 | Voice system microwave sound wave infrared power saving module and intelligent device awakening system |
| CN110867932A (en) * | 2019-11-29 | 2020-03-06 | 潘江 | Microwave sound wave infrared induction multi-path power supply system of intelligent and sound control equipment |
| CN113628617A (en) * | 2020-05-09 | 2021-11-09 | 西安电子科技大学青岛计算技术研究院 | Intelligent voice equipment control method based on millimeter wave radar |
| CN114885254A (en) * | 2022-04-30 | 2022-08-09 | 上海浩宜信息科技有限公司 | Pick-up device with human body induction function |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107801125A (en) | A kind of intelligent sound box control system with microwave radar sensing | |
| CN106910500B (en) | Method and device for voice control of device with microphone array | |
| CN107465974A (en) | Voice signal detector | |
| CN107464564B (en) | Voice interaction method, device and equipment | |
| CN204442410U (en) | The intelligent home device that a kind of sound is auxiliary | |
| EP3185521B1 (en) | Voice wake-up method and device | |
| CN204116902U (en) | To the voice-operated Voice command end of household electrical appliance and control terminal | |
| CN106440192A (en) | Household appliance control method, device and system and intelligent air conditioner | |
| CN104284485A (en) | Intelligent lighting device, lighting system and intelligent lighting control method | |
| CN104216351A (en) | Household appliance voice control method and system | |
| CN103986996B (en) | A kind of conference system based on Array Microphone | |
| CN106507244A (en) | A kind of central control system | |
| CN206559550U (en) | The remote control and television system of a kind of built-in microphone array | |
| CN106358061A (en) | Television voice remote control system and television voice remote control method | |
| CN105911900A (en) | Information processing system applied to vehicle-mounted system | |
| JP6489664B2 (en) | Headset noise reduction method and apparatus | |
| CN206490785U (en) | There is the remote control and television system of far field and near field voice identification simultaneously | |
| CN209044373U (en) | Intelligent human-body infrared sensor and control system | |
| US11297429B2 (en) | Proximity detection for wireless in-ear listening devices | |
| US20160349852A1 (en) | Non-touch control apparatus and control method thereof | |
| CN204697289U (en) | Microphone-based sound source recognition system and smart home appliances | |
| US20160337743A1 (en) | Apparatus and methods for attenuation of an audio signal | |
| US11259126B1 (en) | Property control and configuration based on door knock detection | |
| CN203416751U (en) | Bird repelling device for electric power tower | |
| CN204360208U (en) | A kind of based on the antitheft of Internet of Things and long distance control system |
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 | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180313 |
|
| RJ01 | Rejection of invention patent application after publication |