CN202230552U - Wired knock type doorbell - Google Patents
Wired knock type doorbell Download PDFInfo
- Publication number
- CN202230552U CN202230552U CN 201120286231 CN201120286231U CN202230552U CN 202230552 U CN202230552 U CN 202230552U CN 201120286231 CN201120286231 CN 201120286231 CN 201120286231 U CN201120286231 U CN 201120286231U CN 202230552 U CN202230552 U CN 202230552U
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- door
- doorbell
- wired
- knocking
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Abstract
The utility model discloses a wired knock type doorbell which comprises a doorbell body. The doorbell body comprises a signal processing system connected with a sound production element, and further comprises a door knocking information acquisition device used for acquiring door knocking information, wherein the door knocking information acquisition device is connected with the signal processing system in a wired way and comprises a vibration sensing system which acquires the door knocking information by acquiring a vibration signal produced by a knock on a door. When a visitor knocks the door with a hand, the door knocking information acquisition device acquires the vibration signal produced by the knock on the door through the vibration sensing system to acquire the door knocking information, and transmits the acquired door knocking information to the signal processing system, and then the signal processing system controls the sound production element to produce sounds. Therefore, compared with the prior art, the wired knock type doorbell can prompt the visit of the visitor to a master more explicitly.
Description
Technical field
The utility model relates to household articles, specifically, relates to a kind of doorbell.
Background technology
Doorbell can be sounded and reminded owner to have the people visiting, in life, has received widespread use.But owing to the installation site of doorbell is difficult for coming to light sometimes, or from habits and customs, people in most cases still go to knock at the door with hand.On the other hand, along with the development of sound insulation technology, the soundproof effect of door is also become better and better, and in this case, knocks at the door with hand again, and the owner in the room may can't hear.Moreover some has adopted special material now, even hammer at the door again, also possibly not strike and ring.
Summary of the invention
The purpose of the utility model provides a kind of visitor can be to wired percussive doorbell of the clear prompting of owner when knocking at the door with hand.
For addressing the above problem, the technical scheme that the utility model adopted is:
A kind of wired percussive doorbell; Comprise the doorbell main body; Said doorbell main body comprises a signal processing system; Said signal processing system connects a sounding component, it is characterized in that: comprise that also one is used to obtain the information acquisition device of knocking at the door of the information of knocking at the door, the said said signal processing system of information acquisition device wired connection of knocking at the door; The said information acquisition device of knocking at the door comprises one through obtaining the vibration sensing system that the vibration signal that causes of knocking at the door obtains the information of knocking at the door.
The said information acquisition device of knocking at the door obtains the vibration signal that causes of knocking at the door through vibration sensing system and obtains the information of knocking at the door, and the information of knocking at the door that will get access to is as one of input signal of said signal processing system.When the human hand is knocked at the door; The said information acquisition device of knocking at the door obtains the vibration signal that causes of knocking at the door through vibration sensing system and obtains the information of knocking at the door, and after signal processing system is received the input signal relevant with the information of knocking at the door, handles coherent signal; Analyzing the incident of whether knocking at the door takes place; Incident takes place if knock at the door, and signal processing system control sounding component is sounded, and has the people visiting with the prompting owner.
Said vibration sensing system is one to be used for gathering the acoustic information acquisition module of acoustic information of knocking at the door, and the acoustic information acquisition module can directly connect signal processing system.Said doorbell main body also comprises an acoustic information identification module, and the acoustic information acquisition module connects the acoustic information identification module, and the acoustic information identification module connects signal processing system.Said doorbell main body comprises that also one is used to adjust the voice recognition range finder of the voice recognition scope of acoustic information identification module.Like this, owner just can be according to the characteristic of the door voice recognition scope through voice recognition range finder adjustment acoustic information identification module, so that tap-tap can be by effective collection.The voice recognition scope of said acoustic information identification module is 500-1000 hertz, 40-85 decibel.
Said sounding component adopts the reversible sounding component of signal, and said sounding component and acoustic information acquisition module are shared, promptly simultaneously connects said signal processing system as said acoustic information acquisition module with said sounding component.The reversible sounding component of signal is meant and can electric signal be converted into voice signal, also can voice signal be converted into the sounding component of electric signal.The reversible sounding component of common signal is as with the loudspeaker of electromagnet as controlled dynamical element; Piezo-electric ceramic sounding element.Through making sounding component and acoustic information acquisition module shared, to reduce cost simplified structure.
Said acoustic information acquisition module is a microphone; Comprise a filter amplification circuit, an electric capacity and a counting chip in the said signal processing system, and a Music Clip; Microphone, filter amplification circuit, electric capacity, counting chip and Music Clip are connected successively.When the human hand is knocked at the door; After microphone collects the acoustic information of knocking at the door; Amplify to electric capacity through filter amplification circuit filtering and to charge; Capacitance voltage reaches setting value flip-flop number chip, and counting chip is triggered and then triggers Music Clip more than 3 times or 3 times and sound within a certain period of time, and promptly doorbell rings.The certain hour that sets can be realized through another electric capacity.When triggering for the first time, counting chip connects a discharge circuit for another electric capacity charging, another electric capacity charging, and another electric capacity also connects a counting chip reset circuit, when another electric capacity electric weight is enough low, resets.Therefore, more than 3 times or 3 times, the time, another electric capacity electric weight was very low when longer, and counting chip resets, again counting.
Perhaps, said acoustic information acquisition module is a microphone; Comprise a filter amplification circuit and an electric capacity in the said signal processing system, and one have tally function Music Clip; Microphone, filter amplification circuit, electric capacity and Music Clip are connected successively.When the human hand is knocked at the door; After microphone collects the acoustic information of knocking at the door; Filtering is amplified to the electric capacity charging through filter amplification circuit, and capacitance voltage reaches setting value and triggers the Music Clip with tally function, and the Music Clip of tally function is triggered more than 3 times or 3 times within a certain period of time; Then sound, promptly doorbell rings.
The said information acquisition device of knocking at the door is provided with the stationary installation that is used to be fixed, and said stationary installation is detachable stationary installations such as viscose, sucker, magnet.
Said wired percussive doorbell also comprises a video acquisition, and said video acquisition comprises that one is used to gather the image collecting device of image information outdoors, and said image collecting device connects an image display device through an image processing apparatus; Said video acquisition connects the signal processing system of its duty of control.
Said signal processing system is provided with a video starting switch.When the video starting switch is in closure state, after signal processing system is received the input signal relevant with the information of knocking at the door, handle coherent signal; Analyzing the incident of whether knocking at the door takes place; Incident takes place if knock at the door, and when signal processing system control sounding component was sounded, control of video was obtained system start-up; Image collecting device is gathered image information outdoors, and this image information shows on image display device after image processing apparatus is handled.
Said signal processing system also is provided with an early warning switch.Be under the closed situation at the video starting switch, make the early warning switch closure, doorbell gets into alert status.At this moment; After signal processing system is received the input signal relevant with the information of knocking at the door, handle coherent signal, analyze the incident of whether knocking at the door and take place; Incident takes place if knock at the door; The signal processing system control of video is obtained system start-up, and image collecting device is gathered image information outdoors, and this image information is dealt into image information on the wireless terminal of appointment through a wireless terminal after image processing apparatus is handled.
Said video acquisition comprises that also one is used for the image memory device of stored images information.Image information is after image processing apparatus is handled outdoors, on the wireless terminal that image information is dealt into appointment through wireless terminal in, through image memory device with this image information storage.Said image memory device can be fixedly connected said image processing apparatus, and said image processing apparatus also can removably connect.Image memory device can be a storage card, and said storage card is through the inserting groove grafting image processing apparatus of image processing apparatus.
Said wired percussive doorbell is provided with a control panel, and said control panel is provided with video starting switch button, early warning switch key and as the display of the image display device of video acquisition.Ornamental for control panel is had, said control panel adopts touch-screen, and switch keys such as video starting switch button and early warning switch key are the touch key-press switch.The image memory device internal memory contains various display images with aesthetic effect.There is not control signal input or touch-screen does not have under the situation of touching the display image of storing in the displayable image memory storage on the touch-screen in signal processing system.
In order not influence the attractive in appearance of a body, improve the disguise of image collecting device simultaneously, image collecting device can place the opal place, also can with the shared shell of the information acquisition device of knocking at the door.When image collecting device placed the opal place, the camera lens of image collecting device can directly embed opal.Image collecting device can also connect a fixed bar through a rotating shaft, and fixed bar connects a door body, rotates around the axis through making image collecting device, make image collecting device towards opal.Like this, promptly guarantee the disguise of image collecting device, do not influenced the normal use of opal again.The user only needs that image collecting device is left opal and gets final product through outdoors image of opal manual observation the time.
Owing to adopted technique scheme, compared with prior art, when the visitor knocked at the door with hand, the utility model can point out owner to have the guest visiting more explicitly.
Description of drawings
Fig. 1 is a kind of circuit block diagram of the utility model;
Fig. 2 is a kind of structural representation of the utility model.
Embodiment
For technological means, creation characteristic that the utility model is realized, reach purpose and be easy to understand with effect and understand, below in conjunction with the further elaboration the present invention of concrete diagram.
With reference to Fig. 1, Fig. 2, wired percussive doorbell comprises the doorbell main body.The doorbell main body comprises sounding component 2, signal processing system 1.The doorbell main body comprises that also one is used to obtain the information acquisition device 11 of knocking at the door of the information of knocking at the door, the information acquisition device 11 wired connection signal processing systems 1 of knocking at the door.The information acquisition device of knocking at the door comprises a vibration sensing system; When the human hand is knocked at the door; The information acquisition device 11 of knocking at the door obtains the vibration signal that causes of knocking at the door through vibration sensing system and obtains the information of knocking at the door; And the transmitted information signal disposal system 1 of knocking at the door that will get access to, as one of input signal of signal processing system 1.
Vibration sensing system is one to be used for gathering the acoustic information acquisition module of acoustic information of knocking at the door, and the acoustic information acquisition module directly connects signal processing system 1.The doorbell main body also comprises an acoustic information identification module, and the acoustic information acquisition module connects the acoustic information identification module, and the acoustic information identification module connects signal processing system 1.
The doorbell main body comprises that also one is used to adjust the voice recognition range finder of the voice recognition scope of acoustic information identification module.Like this, owner just can be according to the characteristic of the door voice recognition scope through voice recognition range finder adjustment acoustic information identification module, so that tap-tap can be by effective collection.Generally, the voice recognition scope of acoustic information identification module is set at 500-1000 hertz, 40-85 decibel.When the door body adopts special material to make, can set the voice recognition scope separately.
The acoustic information acquisition module is a microphone.Comprise a filter amplification circuit, an electric capacity and a counting chip in the signal processing system, and a Music Clip.Microphone, filter amplification circuit, electric capacity, counting chip and Music Clip are connected successively.When the human hand is knocked at the door; After microphone collects the acoustic information of knocking at the door; Amplify to electric capacity through filter amplification circuit filtering and to charge; Capacitance voltage reaches setting value flip-flop number chip, and counting chip is triggered and then triggers Music Clip more than 3 times or 3 times and sound within a certain period of time, and promptly doorbell rings.The certain hour that sets can be realized through another electric capacity.When triggering for the first time, counting chip connects a discharge circuit for another electric capacity charging, another electric capacity charging, and another electric capacity also connects a counting chip reset circuit, when another electric capacity electric weight is enough low, resets.Therefore when the time was longer more than 3 times or 3 times, another electric capacity electric weight was very low, and counting chip resets, again counting.
Perhaps, the acoustic information acquisition module is a microphone.Comprise a filter amplification circuit and an electric capacity in the signal processing system, and one have tally function Music Clip.Microphone, filter amplification circuit, electric capacity and Music Clip are connected successively.When the human hand is knocked at the door; After microphone collects the acoustic information of knocking at the door; Filtering is amplified to the electric capacity charging through filter amplification circuit, and capacitance voltage reaches setting value and triggers the Music Clip with tally function, and the Music Clip of tally function is triggered more than 3 times or 3 times within a certain period of time; Then sound, promptly doorbell rings.
Specific embodiment 1: wired percussive doorbell that the information acquisition device 11 of knocking at the door is built-in
With reference to Fig. 2, the information acquisition device 11 of knocking at the door is fixed on an inboard through stationary installation, and stationary installation can be detachable stationary installations such as viscose, sucker 5, magnet.The information acquisition device 11 of knocking at the door connects signal processing system 1.When the human hand is knocked at the door, the transmitted information signal disposal system 1 of knocking at the door that the information acquisition device 11 of knocking at the door will get access to, signal processing system 1 control sounding component 2 sounds, and has the people visiting with the prompting owner.The information acquisition device 11 of knocking at the door is built-in, helps keeping the overall appearance of door on the one hand, and the information acquisition device 11 that can effectively prevent to knock at the door on the other hand damages.
Specific embodiment 2: wired percussive doorbell of band keyswitch 21
Wired percussive doorbell comprises a keyswitch 21, and keyswitch 21 connects signal processing system 1.Be wired connection between keyswitch 21 and the signal processing system 1, certainly, also can be wireless.After the people touched keyswitch 21, keyswitch 21 can be to signal processing system 1 input signal.
Adopt wired percussive doorbell of this structure, can utilize existing doorbell to reequip fully.Only need on the basis of the structure that has common doorbell now, to install the information acquisition device 11 of knocking at the door additional, the signal input part of the signal output part connection signal processing system 1 of the information acquisition device 11 of knocking at the door is got final product.As for signal processing system 1 is to accept the signal of keyswitch 21; Still accept the to knock at the door signal of information acquisition device 11; And two precedence relationships between the signal, can adjust through the function selecting mechanism of the input signal that is used to select whether accept keyswitch 21 and/or knock at the door information acquisition device 11.Because the adjustment process of function selecting mechanism very easily realizes, columns no longer one by one here.
Wired percussive doorbell of band keyswitch 21 can place an inboard with the information acquisition device 11 of knocking at the door when installing and using, keyswitch 21 places outer side of door; Also can the information acquisition device 11 of knocking at the door be placed in the housing of keyswitch 21, and be fixed on outer side of door through keyswitch 21.
Specific embodiment 3: wired percussive doorbell of band video acquisition
Wired percussive doorbell can also comprise a video acquisition.Video acquisition comprises that one is used to gather the image collecting device 31 of image information outdoors, and image collecting device 31 connects an image display device through an image processing apparatus 32, and video acquisition connects signal processing system.The duty of video acquisition receives the control of signal processing system 1.Image processing apparatus 32 can with signal processing system 1 a shared processor.Signal processing system 1 is provided with a video starting switch; When the video starting switch is in closure state, after signal processing system 1 is received the input signal relevant with the information of knocking at the door, handle coherent signal; Analyzing the incident of whether knocking at the door takes place; Incident takes place if knock at the door, and when signal processing system 1 control sounding component 2 was sounded, control of video was obtained system start-up; Image collecting device 31 is gathered image information outdoors, and this image information shows on image display device after image processing apparatus 32 is handled.
Signal processing system also is provided with an early warning switch, is under the closed situation at the video starting switch, makes the early warning switch closure, and wired percussive doorbell gets into alert status.At this moment; After signal processing system 1 is received the input signal relevant with the information of knocking at the door, handle coherent signal, analyze the incident of whether knocking at the door and take place; Incident takes place if knock at the door; Signal processing system 1 control of video is obtained system start-up, and image collecting device 31 is gathered image information outdoors, and this image information is dealt into image information on the wireless terminal of appointment through a wireless terminal after image processing apparatus 32 is handled.Wireless terminal can be connected on the signal processing system 1, comes unified management by signal processing system 1.Wireless terminal also can directly connect image processing apparatus 32, to reduce the programming difficulty of signal processing system 1.
Video acquisition can also comprise an image memory device 33, on the wireless terminal that image information is dealt into appointment through wireless terminal in, through image memory device 33 with the storage of this image information.Image memory device 33 can be connected on the signal processing system 1, comes unified management by signal processing system 1.Image memory device 33 also can directly connect image processing apparatus 32, to reduce the programming difficulty of signal processing system 1.
Wired percussive doorbell is provided with a control panel 41.Control panel 41 is provided with video starting switch button, early warning switch key.Also be provided with a display 42 on the control panel 41, adopt the image display device of display 42 as video acquisition.In order to increase the function of control panel 41, it is ornamental that control panel 41 is had, and control panel 41 adopts touch-screen, and each CS is the touch key-press switch.Image memory device 33 internal memories contain various display images with aesthetic effect.There are not under the situation of touching the various display images of storage in the displayable image memory storage 33 on the touch-screen with aesthetic effect in input of signal processing system 1 no signal or touch-screen.
In order not influence the attractive in appearance of a body, improve the disguise of image collecting device 31 simultaneously, image collecting device 31 can place the opal place, also can with the information acquisition device 11 shared shells of knocking at the door that place outer side of door.When image collecting device placed the opal place, the camera lens of image collecting device can directly embed opal.Image collecting device can also connect a fixed bar through a rotating shaft, and fixed bar connects a door body, rotates around the axis through making image collecting device, make image collecting device towards opal.Like this, promptly guarantee the disguise of image collecting device, do not influenced the normal use of opal again.The user only needs that image collecting device is left opal and gets final product through outdoors image of opal manual observation the time.
Among above-mentioned each embodiment, each several part can organic assembling, with the function of enhanced system.
More than show and described ultimate principle, principal character and the advantage of the utility model.The technician of the industry should understand; The utility model is not restricted to the described embodiments; The principle of describing in the foregoing description and the instructions that the utility model just is described; Under the prerequisite that does not break away from the utility model spirit and scope, the utility model also has various changes and modifications, and these variations and improvement all fall in the utility model scope that requires protection.The utility model requires protection domain to be defined by appending claims and equivalent thereof.
Claims (10)
1. wired percussive doorbell; Comprise the doorbell main body; Said doorbell main body comprises a signal processing system; Said signal processing system connects a sounding component, it is characterized in that: comprise that also one is used to obtain the information acquisition device of knocking at the door of the information of knocking at the door, the said said signal processing system of information acquisition device wired connection of knocking at the door; The said information acquisition device of knocking at the door comprises one through obtaining the vibration sensing system that the vibration signal that causes of knocking at the door obtains the information of knocking at the door.
2. wired percussive doorbell according to claim 1 is characterized in that: said vibration sensing system is one to be used for gathering the acoustic information acquisition module of acoustic information of knocking at the door, and the acoustic information acquisition module directly connects the acoustic information identification module.
3. wired percussive doorbell according to claim 1; It is characterized in that: said vibration sensing system is one to be used for gathering the acoustic information acquisition module of acoustic information of knocking at the door; The acoustic information acquisition module connects the acoustic information identification module, and the acoustic information identification module connects signal processing system.
4. wired percussive doorbell according to claim 3 is characterized in that: said doorbell main body comprises that also one is used to adjust the voice recognition range finder of the voice recognition scope of acoustic information identification module.
5. wired percussive doorbell according to claim 3 is characterized in that: the voice recognition scope of said acoustic information identification module is the 40-85 decibel.
6. wired percussive doorbell according to claim 2 is characterized in that: said acoustic information acquisition module is a microphone; Comprise a filter amplification circuit, an electric capacity and a counting chip in the said signal processing system, and a Music Clip; Microphone, filter amplification circuit, electric capacity, counting chip and Music Clip are connected successively.
7. wired percussive doorbell according to claim 2; It is characterized in that: said sounding component adopts the reversible sounding component of signal; Said sounding component and acoustic information acquisition module are shared, promptly simultaneously connect said signal processing system as said acoustic information acquisition module with said sounding component.
8. according to any described wired percussive doorbell in the claim 1 to 7, it is characterized in that: the said information acquisition device of knocking at the door is provided with the stationary installation that is used to be fixed, and said stationary installation is detachable stationary installation.
9. according to any described wired percussive doorbell in the claim 1 to 7; It is characterized in that: said wired percussive doorbell also comprises a video acquisition; Said video acquisition comprises that one is used to gather the image collecting device of image information outdoors, and said image collecting device connects an image display device through an image processing apparatus; Said video acquisition connects the signal processing system of its duty of control.
10. wired percussive doorbell according to claim 9 is characterized in that: said image collecting device places the opal place of a body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120286231 CN202230552U (en) | 2010-09-14 | 2011-08-08 | Wired knock type doorbell |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010281537 | 2010-09-14 | ||
| CN201010281537.1 | 2010-09-14 | ||
| CN 201120286231 CN202230552U (en) | 2010-09-14 | 2011-08-08 | Wired knock type doorbell |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202230552U true CN202230552U (en) | 2012-05-23 |
Family
ID=45944279
Family Applications (4)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201120286235 Expired - Fee Related CN202230553U (en) | 2010-09-14 | 2011-08-08 | Wireless percussive doorbell |
| CN2011202864823U Expired - Fee Related CN202257785U (en) | 2010-09-14 | 2011-08-08 | Boxed knock-type doorbell |
| CN201110226320.5A Active CN102419880B (en) | 2010-09-14 | 2011-08-08 | Tap-tap triggers doorbell |
| CN 201120286231 Expired - Fee Related CN202230552U (en) | 2010-09-14 | 2011-08-08 | Wired knock type doorbell |
Family Applications Before (3)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201120286235 Expired - Fee Related CN202230553U (en) | 2010-09-14 | 2011-08-08 | Wireless percussive doorbell |
| CN2011202864823U Expired - Fee Related CN202257785U (en) | 2010-09-14 | 2011-08-08 | Boxed knock-type doorbell |
| CN201110226320.5A Active CN102419880B (en) | 2010-09-14 | 2011-08-08 | Tap-tap triggers doorbell |
Country Status (1)
| Country | Link |
|---|---|
| CN (4) | CN202230553U (en) |
Families Citing this family (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102999980A (en) * | 2012-12-12 | 2013-03-27 | 谢忠玉 | Vibration induction type wireless electronic doorbell calling unit |
| CN103702083A (en) * | 2013-12-29 | 2014-04-02 | 广州视声电子科技有限公司 | Knock identification method and knock identification device |
| CN204117226U (en) * | 2014-06-13 | 2015-01-21 | 上海科斗电子科技有限公司 | Doorbell intelligence activating system |
| CN104063968A (en) * | 2014-06-13 | 2014-09-24 | 米振宇 | Knock type doorbell circuit |
| CN204143560U (en) * | 2014-06-13 | 2015-02-04 | 上海科斗电子科技有限公司 | Knock trigger-type induction door bell |
| CN104125426A (en) * | 2014-07-31 | 2014-10-29 | 孔祥琪 | Intelligent doorbell starting device |
| CN105374137A (en) * | 2014-08-20 | 2016-03-02 | 上海本星电子科技有限公司 | Inductive doorbell trigger system |
| CN105374136A (en) * | 2014-08-28 | 2016-03-02 | 上海本星电子科技有限公司 | Knocking sound identification doorbell wakeup system |
| CN105957278A (en) * | 2015-03-09 | 2016-09-21 | 上海本星电子科技有限公司 | Intelligent induction doorbell and door by employing the same |
| CN106056805A (en) * | 2015-04-14 | 2016-10-26 | 上海本星电子科技有限公司 | Inductive doorbell triggering system |
| CN107705409A (en) * | 2017-11-15 | 2018-02-16 | 深圳市中物联传感技术研究中心 | A kind of concealed intelligent gate control system and its control method |
| CN108806137A (en) * | 2018-06-14 | 2018-11-13 | 北京奇虎科技有限公司 | A kind of control method and device of intelligent doorbell, intelligent doorbell |
| CN111429675A (en) * | 2020-02-28 | 2020-07-17 | 哈尔滨工业大学（深圳） | Deaf-mute doorbell |
| CN113689637A (en) * | 2021-07-12 | 2021-11-23 | 浙江工业大学 | Doorbell without button and implementation method thereof |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2138825Y (en) * | 1992-11-30 | 1993-07-21 | 上海天下电子电器有限公司 | Knocking type door bell |
| CN2233103Y (en) * | 1994-12-21 | 1996-08-14 | 赵习经 | Anti-theft door bell |
| CN2388331Y (en) * | 1999-09-13 | 2000-07-19 | 吴光祥 | Anti-theft door |
| US7079014B2 (en) * | 2004-05-08 | 2006-07-18 | Scott Steinetz | Digital sampling playback doorbell system |
| CN201111666Y (en) * | 2007-09-18 | 2008-09-10 | 河南农业大学 | Induction type anti-theft door bell |
| CN201489617U (en) * | 2009-08-18 | 2010-05-26 | 李智新 | Vibration type electronic music doorbell |
| CN201508611U (en) * | 2009-09-23 | 2010-06-16 | 丁路 | Electronic reminder |
| CN201974888U (en) * | 2010-09-14 | 2011-09-14 | 上海科斗电子科技有限公司 | Knocking type doorbell |
| CN201886564U (en) * | 2010-09-14 | 2011-06-29 | 上海科斗电子科技有限公司 | Wireless induction doorbell |
-
2011
- 2011-08-08 CN CN 201120286235 patent/CN202230553U/en not_active Expired - Fee Related
- 2011-08-08 CN CN2011202864823U patent/CN202257785U/en not_active Expired - Fee Related
- 2011-08-08 CN CN201110226320.5A patent/CN102419880B/en active Active
- 2011-08-08 CN CN 201120286231 patent/CN202230552U/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN202257785U (en) | 2012-05-30 |
| CN102419880B (en) | 2016-06-15 |
| CN202230553U (en) | 2012-05-23 |
| CN102419880A (en) | 2012-04-18 |
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