CN111726754A - Intelligent communication system of interphone - Google Patents
Intelligent communication system of interphone Download PDFInfo
- Publication number
- CN111726754A CN111726754A CN202010761517.8A CN202010761517A CN111726754A CN 111726754 A CN111726754 A CN 111726754A CN 202010761517 A CN202010761517 A CN 202010761517A CN 111726754 A CN111726754 A CN 111726754A
- Authority
- CN
- China
- Prior art keywords
- module
- main control
- interphone
- early warning
- intercom
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/02—Services making use of location information
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B25/00—Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems
- G08B25/01—Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems characterised by the transmission medium
- G08B25/10—Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems characterised by the transmission medium using wireless transmission systems
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B7/00—Signalling systems according to more than one of groups G08B3/00 - G08B6/00; Personal calling systems according to more than one of groups G08B3/00 - G08B6/00
- G08B7/06—Signalling systems according to more than one of groups G08B3/00 - G08B6/00; Personal calling systems according to more than one of groups G08B3/00 - G08B6/00 using electric transmission, e.g. involving audible and visible signalling through the use of sound and light sources
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
- H04B1/40—Circuits
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/04—TPC
- H04W52/18—TPC being performed according to specific parameters
- H04W52/28—TPC being performed according to specific parameters using user profile, e.g. mobile speed, priority or network state, e.g. standby, idle or non transmission
- H04W52/283—Power depending on the position of the mobile
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W8/00—Network data management
- H04W8/005—Discovery of network devices, e.g. terminals
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Databases & Information Systems (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Interconnected Communication Systems, Intercoms, And Interphones (AREA)
- Telephone Function (AREA)
Abstract
The invention discloses an intelligent communication system of an interphone, which comprises a main control module, an adjusting module, a battery module, a radio frequency detection module, a positioning module, a voice receiving module, an early warning module, a data storage module and a control panel, wherein one end of the main control module is respectively electrically connected with the adjusting module, the radio frequency detection module, the positioning module, the voice receiving module, the early warning module, the data storage module and the control panel through lead wires, and the other end of the main control module is electrically connected with the battery module through lead wires. This intercom intelligent communication system rotates through the cooperation of three groups of motors, can perceive the positional information that the intercom used constantly to by the regulation and control to positional information, the power that the automatic control intercom used, and then the automatically regulated of power when having realized the intercom communication, make it when guaranteeing that communication is stable, can also save the electric quantity, and remind the user in time to charge for the intercom, when having avoided outside use, the loss problem that the electric quantity is not enough to cause.
Description
Technical Field
The invention belongs to the technical field of communication, and particularly relates to an intelligent communication system of an interphone.
Background
The interphone is a two-way mobile communication tool, can be used for communication without any network support, is suitable for occasions with relatively fixed and frequent communication, does not generate telephone charges, and is suitable for occasions with relatively fixed and frequent communication. Interphones currently have three main categories: analog interphone, digital interphone, IP interphone.
The prior interphone is used, although a user can finish the using operation of the interphone after receiving certain training, in the operating process of the interphone, the operation of a key control type is generally carried out at the present stage, when a worker uses the interphone alternately at long and short distances, if the stable use of the long-distance interphone is ensured, the worker is required to switch the interphone to be high-power, and the interphone is used to be high-power and power-consuming at short distances, so that the worker is required to operate the interphone for multiple times, the interphone is troublesome, and the interphone is easy to forget, and the electric quantity loss of the interphone is fast.
Disclosure of Invention
The invention aims to provide an intelligent communication system of an interphone, which aims to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: an intelligent communication system of an interphone comprises a main control module, an adjusting module, a battery module, a radio frequency detection module, a positioning module, a voice receiving module, an early warning module, a data storage module and a control panel, wherein one end of the main control module is respectively electrically connected with the adjusting module, the radio frequency detection module, the positioning module, the voice receiving module, the early warning module, the data storage module and the control panel through lead wires, and the other end of the main control module is electrically connected with the battery module through a lead wire;
the main control module is used for acquiring information and data sent by other elements in the interphone and sending control signals to the receiving ends of the electronic elements through an internally allocated program;
the data storage module is used for storing control information and common instruction information used in the interphone in real time;
the adjusting module is used for receiving the control information sent by the main control module, and the adjusting module adjusts and controls different information, so that the corresponding electronic element receives a corresponding instruction, and the operation of the function of the interphone is completed.
Preferably, the positioning module is mainly a GPS positioning chip for positioning, is installed inside the interphone, positions the used interphone, transmits the positioning information into the main control module, and the main control module retrieves the common positioning coordinate information stored in the data storage module;
if the positioning coordinate information received by the main control module is not in the called common coordinate information, the main control module starts to control the adjusting module, the adjusting module operates the battery module, and the power consumption of the interphone is switched to high power so as to ensure that the interphone can work normally and stably.
Preferably, the battery module is used for providing electric energy for the operation of the whole interphone equipment, and a corresponding power adjusting mechanism is arranged in the battery module, so that the power can be adjusted to the optimal power for the interphone after the instruction information is received.
Preferably, the battery module further comprises a battery capacity detection unit, and in the process of battery capacity loss, the battery capacity detection unit transmits the residual capacity condition of the battery to the main control module in real time, and the degree is allocated by the interior of the main control module;
when the electric quantity of the battery is consumed to be about% approximately, the main control module starts to send out an early warning instruction signal, the early warning instruction signal is transmitted to the early warning module, and the early warning module sends out a corresponding early warning instruction.
Preferably, the early warning module is including setting up electric quantity signal early warning lamp and the early warning loudspeaker with the intercom surface, and the bluetooth module of installation in the intercom to main control module sends charging information through the smart mobile phone that bluetooth module is connected about every loss% of electric quantity simultaneously, and here bluetooth module mainly is used for the adaptation of intercom and smart mobile phone to be connected.
Preferably, the control panel comprises a control signal key for controlling the main control module and a display screen, wherein the display screen of the control panel is further used for displaying the electric quantity condition of the battery module.
Preferably, the voice receiving module is installed inside the interphone and used for receiving the voice control information sent by the user, and transmitting the voice control information to the main control module in the form of a control signal in a revolving manner, so that the main control module completes the overall operation of the interphone.
Preferably, the radio frequency detection module is used for detecting frequencies sent by other interphones in real time, transmitting the frequency information into the main control module, receiving the frequency information by the main control module, selecting the frequency information by the control panel, and adjusting the frequency of the interphones to the frequency selected by the control panel by the adjusting module after the selection is completed.
The invention has the technical effects and advantages that: the intelligent communication system of the interphone has the advantages that through the arrangement of the positioning module, the main control module, the data storage module and the electrical connection between the adjusting module and the battery module, a user can sense the position information used by the interphone at any time in the process of using the interphone for communication, and the power used by the interphone is automatically controlled by adjusting and controlling the position information, so that the automatic adjustment of the power in the process of using the interphone for communication is realized, the communication stability is ensured, and meanwhile, the electric quantity can be saved; the Bluetooth module and the early warning module are matched, when the electric quantity of the interphone is insufficient, the interphone can be reminded of charging the interphone in time through multiple early warning settings, and the problem of loss caused by insufficient electric quantity when the interphone is used outside is solved; besides, the interphone can also sense the frequency sent by other interphones and is rapidly connected into the corresponding frequency, so that the rapid operation process of the interphone during communication is realized, and the operation time is saved.
Drawings
FIG. 1 is a block diagram of the present invention;
FIG. 2 is a block diagram of the positioning module, the early warning module, the Bluetooth module and the main control module according to the present invention;
FIG. 3 is a block diagram of the positioning module, the adjusting module, the battery module, the data storage module and the main control module according to the present invention;
FIG. 4 is a block diagram of the RF detection module, the main control module, the control panel and the adjustment module according to the present invention.
In the figure: the system comprises a main control module 1, a battery module 2, an early warning module 3, a Bluetooth module 4, a voice receiving module 5, a positioning module 6, a radio frequency detection module 7, an adjusting module 8, a control panel 9 and a data storage module 10.
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.
The invention provides an intercom intelligent communication system as shown in figures 1-4, which comprises a main control module 1, an adjusting module 8, a battery module 2, a radio frequency detection module 7, a positioning module 6, a voice receiving module 5, an early warning module 3, a data storage module 10 and a control panel 9, wherein one end of the main control module 1 is respectively and electrically connected with the adjusting module 8, the radio frequency detection module 7, the positioning module 6, the voice receiving module 5, the early warning module 3, the data storage module 10 and the control panel 9 through lead wires, and the other end of the main control module 1 is electrically connected with the battery module 2 through lead wires;
the main control module 1 is used for acquiring information and data sent by other elements in the interphone and sending control signals to receiving ends of all electronic elements through an internal allocated program;
the data storage module 10 is used for storing control information and common instruction information used in the interphone in real time;
the adjusting module 8 is used for receiving the control information sent by the main control module, and the adjusting module 8 adjusts and controls different information, so that the corresponding electronic element receives a corresponding instruction, and the operation of the function of the interphone is completed.
Specifically, the positioning module 6 is mainly a GPS positioning chip for positioning, is installed inside an intercom, positions the position of the intercom, transmits the positioning information to the main control module 1, and the main control module 1 retrieves the common positioning coordinate information stored in the data storage module 10;
if the positioning coordinate information received by the main control module 1 is not in the retrieved common coordinate information, the main control module 1 starts to control the adjusting module 8, the adjusting module 8 operates the battery module 2, and the power consumption of the interphone is switched to high power, so that the interphone can work normally and stably.
Specifically, the battery module 2 is used for providing electric energy for the operation of the whole interphone equipment, and a corresponding power adjusting mechanism is arranged in the battery module, so that the power can be adjusted to the optimal power for the interphone after receiving the instruction information.
Specifically, the battery module 2 further comprises a battery capacity detection unit, and in the process of battery capacity loss, the battery capacity detection unit transmits the residual capacity condition of the battery to the main control module 1 in real time, and the degree is allocated by the interior of the main control module 1;
when the electric quantity of the battery is consumed to be about 30%, the main control module 1 starts to send out an early warning instruction signal, the early warning instruction signal is transmitted to the early warning module 3, and the early warning module 3 sends out a corresponding early warning instruction.
Specifically, early warning module 3 is including setting up electric quantity signal early warning lamp and the early warning loudspeaker on with the intercom surface, and early warning module 3 sends charging information to the smart mobile phone that main control module 1 passes through bluetooth module 4 and connects when every loss of electric quantity is about 5% simultaneously, by bluetooth module 4 of installation in the intercom, and here bluetooth module 4 mainly used intercom and smart mobile phone's adaptation is connected.
Specifically, the control panel 9 includes a control signal key for controlling the main control module 1 and a display screen, wherein the display screen of the control panel 9 is further used for displaying the electric quantity condition of the battery module 2.
Specifically, the voice receiving module 5 is installed inside the interphone and used for receiving the voice control information sent by the user, and the voice control information is converted into a control signal and transmitted to the main control module 1, so that the main control module 1 completes the overall operation of the interphone.
Specifically, the radio frequency detection module 7 is configured to detect frequencies sent by other interphones in real time, transmit frequency information to the main control module 1, receive the frequency information by the main control module 1, select each frequency information by the control panel 9, and adjust the frequency of the interphones to the frequency selected by the control panel 9 by the adjustment module 8 after the selection is completed.
The working principle of the intercom intelligent communication system is that in the using process, the positioning module 6, the main control module 1, the data storage module 10, the electrical connection between the adjusting module 8 and the battery module 2 are used, a user can sense the position information used by the intercom constantly in the intercom communication process, when the position information exceeds the initially limited position coordinate, the adjusting module 8 switches the power used by the intercom, uses smaller power in short distance, uses larger power in long distance, completes the regulation and control of the position information, automatically controls the power used by the intercom, further realizes the automatic regulation of the power in the intercom communication, ensures the stable communication, saves the electric quantity, and simultaneously when the electric quantity of the intercom is insufficient, the main control module 1 sends out an information instruction of insufficient electric quantity to the early warning module 3, early warning module 3 begins to control the work that intercom surface indicator light is bright and speaker, make the staff in time observe, reach the back in the limited range at the electric quantity simultaneously, do not reduce 5% by bluetooth module 4, to in the staff's of looks adaptation cell-phone, send charging information, avoid the intercom in early warning information user not in time observe or appear damaging the back, the problem of early warning is not in time carried out, remind the user in time to charge for the intercom, when having avoided the external use, the loss problem that the electric quantity is not enough to cause, and when the intercom begins who uses, open the intercom, the frequency information that its inside radio frequency detection module 7 sent other intercoms is responded to, the frequency of photo is selected by staff's pronunciation or manual operation, thereby accomplish the problem of adaptation fast.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.
Claims (8)
1. The utility model provides an intercom intelligent communication system, includes main control module (1), adjusting module (8), battery module (2), radio frequency detection module (7), orientation module (6), voice reception module (5), early warning module (3), data storage module (10) and control panel (9), its characterized in that: one end of the main control module (1) is respectively electrically connected with the adjusting module (8), the radio frequency detection module (7), the positioning module (6), the voice receiving module (5), the early warning module (3), the data storage module (10) and the control panel (9) through wires, and the other end of the main control module is electrically connected with the battery module (2) through wires;
the main control module (1) is used for acquiring information and data sent by other elements in the interphone and sending control signals to the receiving ends of the electronic elements through an internal allocated program;
the data storage module (10) is used for storing control information and common instruction information used in the interphone in real time;
the adjusting module (8) is used for receiving the control information sent by the main control module, and the adjusting module (8) adjusts and controls different information, so that the corresponding electronic element receives a corresponding instruction, and the operation of the function of the interphone is completed.
2. The intercom intelligent communication system of claim 1, wherein: the positioning module (6) is mainly a GPS positioning chip for positioning, is arranged in the interphone, positions the used interphone, transmits positioning information into the main control module (1), and calls the common positioning coordinate information stored in the data storage module (10) by the main control module (1);
if the positioning coordinate information received by the main control module (1) is not in the called common coordinate information, the main control module (1) starts to control the adjusting module (8), the adjusting module (8) operates the battery module (2), and the power consumption of the interphone is switched to high power so as to ensure that the interphone can work normally and stably.
3. The intercom intelligent communication system of claim 2, wherein: the battery module (2) is used for providing electric energy for the operation of the whole interphone equipment, and a corresponding power adjusting mechanism is arranged in the battery module and can adjust the power to the optimal power for the interphone after receiving the instruction information.
4. The intercom intelligent communication system of claim 1, wherein: the battery module (2) also comprises a battery electric quantity detection unit, and in the process of battery electric quantity loss, the battery detection unit transmits the residual electric quantity condition of the battery to the main control module (1) in real time and allocates the degree from the interior of the main control module (1);
when the electric quantity of the battery is consumed to be about 30%, the main control module (1) starts to send out an early warning instruction signal, the early warning instruction signal is transmitted to the early warning module (3), and the early warning module (3) sends out a corresponding early warning instruction.
5. The intercom intelligent communication system of claim 4, wherein: early warning module (3) are including setting up electric quantity signal early warning lamp and the early warning loudspeaker on with the intercom surface, and when every loss of electric quantity was controlled in early warning module (3) simultaneously, by bluetooth module (4) of installation in the intercom, to main control module (1) through the smart mobile phone that bluetooth module (4) are connected send charging information, here bluetooth module (4) mainly used intercom and smart mobile phone's adaptation is connected.
6. The intercom intelligent communication system of claim 1, wherein: the control panel (9) comprises a control signal key and a display screen, wherein the control signal key is used for controlling the main control module (1), and the display screen of the control panel (9) is also used for displaying the electric quantity condition of the battery module (2).
7. The intercom intelligent communication system of claim 1, wherein: the voice receiving module (5) is installed in the interphone and used for receiving voice control information sent by a user, the voice control information is converted into control signals to be transmitted to the main control module (1), and the main control module (1) completes the whole operation of the interphone.
8. The intercom intelligent communication system of claim 1, wherein: the radio frequency detection module (7) is used for detecting the frequencies sent by other interphones in real time, transmitting the frequency information to the main control module (1), receiving the frequency information by the main control module (1), selecting the frequency information by the control panel (9), and adjusting the frequency of the interphones to the frequency selected by the control panel (9) by the adjusting module (8) after the selection is completed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010761517.8A CN111726754A (en) | 2020-07-31 | 2020-07-31 | Intelligent communication system of interphone |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010761517.8A CN111726754A (en) | 2020-07-31 | 2020-07-31 | Intelligent communication system of interphone |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111726754A true CN111726754A (en) | 2020-09-29 |
Family
ID=72574380
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010761517.8A Pending CN111726754A (en) | 2020-07-31 | 2020-07-31 | Intelligent communication system of interphone |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111726754A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101414857A (en) * | 2007-10-18 | 2009-04-22 | 郝鹏程 | Radio frequency power SAS for wireless walkie-talkie |
| CN202652445U (en) * | 2012-05-30 | 2013-01-02 | 昆明聚讯科技有限公司 | Hand-held interphone |
| CN104159280A (en) * | 2014-08-01 | 2014-11-19 | 科立讯通信股份有限公司 | Method for reducing power consumption of DMR terminal circuit |
| CN105933959A (en) * | 2016-04-21 | 2016-09-07 | 西安拓奇电子科技有限公司 | Adaptive transmission parameter adjustment method and device based on geographical position |
| CN106452612A (en) * | 2016-10-14 | 2017-02-22 | 北京小米移动软件有限公司 | Intercom frequency-band state detection method and device, intercom equipment and electronic equipment |
| CN106657585A (en) * | 2016-09-30 | 2017-05-10 | 北京小米移动软件有限公司 | Method and device for regulating frequency of intercom |
| CN106686202A (en) * | 2015-06-04 | 2017-05-17 | 单正建 | Control method of intelligent terminal/mobile phone |
| CN106846720A (en) * | 2016-12-30 | 2017-06-13 | 肇庆高新区黑阳科技有限公司 | A kind of electronic monitoring device and its control method |
-
2020
- 2020-07-31 CN CN202010761517.8A patent/CN111726754A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101414857A (en) * | 2007-10-18 | 2009-04-22 | 郝鹏程 | Radio frequency power SAS for wireless walkie-talkie |
| CN202652445U (en) * | 2012-05-30 | 2013-01-02 | 昆明聚讯科技有限公司 | Hand-held interphone |
| CN104159280A (en) * | 2014-08-01 | 2014-11-19 | 科立讯通信股份有限公司 | Method for reducing power consumption of DMR terminal circuit |
| CN106686202A (en) * | 2015-06-04 | 2017-05-17 | 单正建 | Control method of intelligent terminal/mobile phone |
| CN105933959A (en) * | 2016-04-21 | 2016-09-07 | 西安拓奇电子科技有限公司 | Adaptive transmission parameter adjustment method and device based on geographical position |
| CN106657585A (en) * | 2016-09-30 | 2017-05-10 | 北京小米移动软件有限公司 | Method and device for regulating frequency of intercom |
| CN106452612A (en) * | 2016-10-14 | 2017-02-22 | 北京小米移动软件有限公司 | Intercom frequency-band state detection method and device, intercom equipment and electronic equipment |
| CN106846720A (en) * | 2016-12-30 | 2017-06-13 | 肇庆高新区黑阳科技有限公司 | A kind of electronic monitoring device and its control method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US11196305B2 (en) | Wireless charging device and wireless charging method | |
| CN105739398A (en) | Single-fire electric consumption intelligent switch and control system thereof | |
| CN102659005B (en) | Elevator intelligent remote alarm system | |
| CN103200483A (en) | Bluetooth headset of capacitance distance sensing switch control and vehicle provided with headset | |
| CN203136125U (en) | A capacitive distance-sensed switching control Bluetooth earphone and a vehicle equipped with the earphone | |
| CN102857274A (en) | Short range wireless communication apparatus | |
| CN103200482A (en) | Solar charging-type Bluetooth headset and vehicle provided with same | |
| CN203445874U (en) | Bluetooth interphone | |
| CN203136126U (en) | A photosensitive switching control Bluetooth earphone and a vehicle equipped with such Bluetooth earphone | |
| CN103200484A (en) | Phototonus switching control Bluetooth headset and vehicle with same | |
| CN203151719U (en) | Solar rechargeable Bluetooth headset and vehicle provided with solar rechargeable Bluetooth headset | |
| CN111726754A (en) | Intelligent communication system of interphone | |
| CN205620745U (en) | Electric intelligence switch is got to single fire and control system thereof | |
| CN105471457B (en) | A kind of multiband intelligence intercom | |
| CN201035718Y (en) | Remote controller of household electrical appliance | |
| CN104602367A (en) | Vehicle earphone radio frequency wireless system | |
| CN209845272U (en) | Bluetooth sound that can wirelessly charge | |
| CN205754313U (en) | A kind of GPS positioning interphone utilizing 4G network | |
| CN206686252U (en) | A kind of digital intelligent audio communication system | |
| CN220475948U (en) | Multi-channel fusion communication positioning terminal for realizing three distances of far, middle and near | |
| CN103095877A (en) | Wireless fixed-line telephone with battery monitoring and solar energy charging | |
| CN203721022U (en) | Bidirectional integrated machine with multifunctional fixed telephone | |
| CN220457582U (en) | Call switching circuit, call system and vehicle | |
| CN213694052U (en) | Wireless conference system capable of being charged wirelessly | |
| CN211791502U (en) | Interactive positioning pager with intelligent loudspeaker box |
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 | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200929 |