CN105471457A - Multi- frequency band intelligent interphone - Google Patents

Multi- frequency band intelligent interphone Download PDF

Info

Publication number
CN105471457A
CN105471457A CN201510950693.5A CN201510950693A CN105471457A CN 105471457 A CN105471457 A CN 105471457A CN 201510950693 A CN201510950693 A CN 201510950693A CN 105471457 A CN105471457 A CN 105471457A
Authority
CN
China
Prior art keywords
unit
intercom
master control
control borad
electrically
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.)
Granted
Application number
CN201510950693.5A
Other languages
Chinese (zh)
Other versions
CN105471457B (en
Inventor
石强
邵明绪
彭亮
张建华
艾康
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Xi'an Tuoqi Electronic Technology Co Ltd
Beijing Xiaomi Technology Co Ltd
Xiaomi Inc
Original Assignee
Xi'an Tuoqi Electronic Technology Co Ltd
Xiaomi Inc
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Xi'an Tuoqi Electronic Technology Co Ltd, Xiaomi Inc filed Critical Xi'an Tuoqi Electronic Technology Co Ltd
Priority to CN201510950693.5A priority Critical patent/CN105471457B/en
Publication of CN105471457A publication Critical patent/CN105471457A/en
Application granted granted Critical
Publication of CN105471457B publication Critical patent/CN105471457B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B1/00Details 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
    • H04B1/38Transceivers, 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
    • H04B1/3827Portable transceivers
    • H04B1/3833Hand-held transceivers
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04QSELECTING
    • H04Q5/00Selecting arrangements wherein two or more subscriber stations are connected by the same line to the exchange
    • H04Q5/24Selecting arrangements wherein two or more subscriber stations are connected by the same line to the exchange for two-party-line systems
    • H04Q5/245Circuit arrangements in which for one subscriber low frequency speech and/or signalling signals proceed on the line, while for the other subscriber the low frequency speech and/or signalling signals are modulated upon a high frequency carrier signal
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B1/00Details 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
    • H04B1/38Transceivers, 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
    • H04B1/3827Portable transceivers
    • H04B1/385Transceivers carried on the body, e.g. in helmets
    • H04B2001/3861Transceivers carried on the body, e.g. in helmets carried in a hand or on fingers

Abstract

The invention belongs to the interphone technical field, specifically providing a multi- frequency band intelligent interphone, comprising an enclosure with three-proofing design, a main control plate mounted in the enclosure, a loudspeaker mounted in the enclosure and electrically connected to the main control plate, a battery fixed in the enclosure for supplying power to the main control plate, a first knob for switching channels and a knob for adjusting audio frequency mounted on the enclosure, and a PTT knob for controlling voice call; the main control plate comprises a power supply management unit, a processer unit, a radio frequency unit and a power amplification unit; the battery is connected to the corresponding position of the power supply management unit; the radio frequency unit is electrically connected to the processor unit; the power amplification unit is electrically connected to the radio frequency unit; the interphone also comprises a Bluetooth unit arranged on the main control plate; and the Bluetooth unit is electrically connected to the processer unit on the main control plate. Antennas are switched through the radio frequency unit, thus realizing working on multi- frequency bands, and the interphone is suitable for different people.

Description

A kind of multiband intelligence intercom
Technical field
The invention belongs to intercom technical field, relate to a kind of multiband intelligence intercom, make intercom can be operated in amateur band and public's intercom frequency range, make different use per family can legal use intercom equipment.
Background technology
Existing communication equipment, especially intercom equipment, it is a kind of bidirectional mobile communication instrument, when without any need for network support, just can converse, not have telephone expenses to produce, be applicable to relatively fix and the occasion of frequent call, in daily life and outdoor exercises and emergency relief aspect, very important effect is had.But, owing to there is no the relaying action of base station, only rely on the radio-frequency transmissions of unit to communicate, make intercom on communication distance, not reach the level of mobile phone far away.Simultaneously, owing to using High power radios, interference may be caused to other equipment with frequency range, therefore, the national use frequency range to intercom, transmitting power limit, simultaneously, require to use the people of relatively powerful wireless device to hold license, therefore, for amateurish intercom, because its transmitting power mostly is about 5W, domestic consumer needs to be admitted to radio adaptation grade card, intercom needs to carry out putting on record and can use, and therefore domestic consumer uses this kind of intercom to be illegal.But for public's intercom, its transmitting power is 0.5W, country, to the use of this kind of intercom not restriction, namely can use without the need to accredited; But the frequency fixing due to it and less transmitting power, make its experience poor.After user obtains legal license, when wanting to experience powerful talk back equipment, purchase of equipment again of having to, and, want to use this two frequency ranges simultaneously, then need to carry different intercoms.
For this situation, the invention provides a kind of multiband intelligence intercom, comprise there is three-proof design shell, master control borad be in the enclosure installed, be arranged on loudspeaker that enclosure is electrically connected with master control borad, fixed housing inside for power to master control borad battery, be installed on shell and breathe out the PTT button controlled for the first knob of channel switch and the knob regulated for audio frequency and for voice; Master control borad comprises Power Management Unit, processor unit, radio frequency unit, power amplifier unit, battery is connected to the correspondence position of Power Management Unit, and radio frequency unit and processor unit are electrically connected, and power amplifier unit and radio frequency unit are electrically connected; Also comprise the bluetooth unit be placed on master control borad, described bluetooth unit is corresponding with the processor unit on master control borad to be electrically connected.By a radio circuit, switched antenna thus realize at multiple band operation, make intercom can be adapted to different crowds.
Summary of the invention
The object of the invention is to overcome existing amateurish intercom and there is no public's intercom pattern, do not operate the personage of card and operate illegal problem.
For this reason, the invention discloses a kind of multiband intelligence intercom, comprise there is three-proof design shell, master control borad be in the enclosure installed, be arranged on microphone that enclosure and master control borad be electrically connected and loudspeaker, fixed housing inside for power to master control borad battery, be installed on shell and breathe out the PTT button controlled for the first knob of channel switch and the knob regulated for audio frequency and for voice; Master control borad comprises Power Management Unit, processor unit, radio frequency unit, power amplifier unit, battery is connected to the correspondence position of Power Management Unit, and radio frequency unit and processor unit are electrically connected, and power amplifier unit and radio frequency unit are electrically connected; Also comprise the bluetooth unit be placed on master control borad, described bluetooth unit is corresponding with the processor unit on master control borad to be electrically connected.By bluetooth unit, intercom can be connected to the smart machine such as mobile phone or panel computer, by smart machine, to the configuration that intercom is correlated with.
Above-mentioned intelligent intercom at least two antennas; Wherein, the first antenna is fixedly welded on master control borad, and this antenna is the antenna of public's intercom, because according to national policy regulation, public's intercom is fixed as 20 channels, transmitting power must not more than 0.5W, and antenna does not allow change.Therefore, when intercom is operated in public's intercom pattern, the first antenna is switched on, because the first natural barrier is welded on master control borad, so non-exchange.Other antenna (7X) is installed by the antennal interface be arranged on shell, and described antennal interface is corresponding with master control borad to be electrically connected; This antennal interface adopts ripe SMA interface, can antenna on compatible market, and user can change according to demand.When only having intercom to be linked into non-public intercom pattern, this antennal interface is just switched on, and could use this passage.Switching between first antenna and other antennas, controls by being positioned at switch element on master control borad.
Above-mentioned a kind of multiband intelligence intercom, also comprises the display screen being embedded in case surface; Described display screen is corresponding with the processor unit on master control borad to be electrically connected.Display screen can show the information such as electricity, signal, pattern and frequency.Here processor can adopt STM32 series processors, and for utilizing STM32 processor to complete display screen driving, switch control rule supervisor, for described those skilled in the art, the easy acquisition of energy, belongs to known technology.
Above-mentioned a kind of multiband intelligence intercom, under at least can being operated in public's intercom pattern and amateurish intercom pattern, the radio frequency unit that various pattern uses is shared module, so radio frequency unit at least can be operated in two band limits; Certainly except public's intercom frequency range 409.75MHZ-409.9875MHZ, amateur band has multiple, and except 430MHZ-440MHZ, also have 144MHZ-146MHZ, therefore radio frequency unit can be operated in multiple frequency range.
Above-mentioned a kind of multiband intelligence intercom, described bluetooth unit is low-power consumption bluetooth.Its connection can compatible common Android device and ios device.For ensureing the aesthetic property of display, display screen is here color screen, adopts the finished product of outsourcing.
The invention has the beneficial effects as follows: by smart machine, intercom is arranged, the hardware configuration of intercom can be simplified, meanwhile, by means of some hardware devices of mobile phone, the cost of intercom can be reduced; Meanwhile, adopt the design of multiband, for there is no the people of radio license, public's intercom can be used, for the people with license, high-power amateurish intercom can be used, thus make intercom can adapt to more crowd.
Below in conjunction with accompanying drawing, the invention will be further described.
Accompanying drawing explanation
As the design diagram that Fig. 1 is the first embodiment of the present invention;
As the right side perspective view that Fig. 2 is the first embodiment of the present invention;
It is the module frame chart of the master control borad of the first embodiment of the present invention as Fig. 3;
As the design diagram that Fig. 4 is the second embodiment of the present invention;
It is the module frame chart of the master control borad of the second embodiment of the present invention as Fig. 5;
As the design diagram that Fig. 6 is the third embodiment of the present invention;
Reference numeral: 1, shell; 2, master control borad; 3, loudspeaker; 4, battery; 5, display screen; 7, antenna; 8, antennal interface; 21, Power Management Unit; 22, processor unit; 23, radio frequency unit; 24, power amplifier unit; 25, bluetooth unit; 26, switch element; 71, the first antenna.
Embodiment
Embodiment 1
As the design diagram that Fig. 1 is the first embodiment of the present invention, as the right side perspective view that Fig. 2 is the first embodiment, comprise the shell 1 with three-proof design, the master control borad 2 be arranged in shell 1, be arranged on the inner microphone that be electrically connected with master control borad 2 of shell 1 and loudspeaker 3, fixed housing 1 inside for power to master control borad 2 battery 4, be installed on shell 1 and breathe out the PTT button and at least two antennas 7 that control for the first knob of channel switch and the knob regulated for audio frequency and for voice, it is the module frame chart of the master control borad of the first embodiment of the present invention as Fig. 3, master control borad 2 comprises the Power Management Unit 21 be electrically connected with battery 4 for providing power supply to master control borad 2, processor unit 22, radio frequency unit 23, power amplifier unit 24, bluetooth unit 25 and switch element 26, radio frequency unit 23, power amplifier unit 24, bluetooth unit 25 and switch element 26 are all corresponding with processor unit 22 to be electrically connected, power amplifier unit 24 and radio frequency unit 23 are electrically connected, power amplifier unit 24 is connected respectively to antennal interface 8 and the first antenna 71 by switch element 26, wherein the first antenna 71 is public's interphone antenna, band limits is 409.75MHZ-409.9875MHZ, be welded on master control borad 2, be electrically connected with one end of switch element 26.By bluetooth unit 25, intercom can be connected to the smart machine such as mobile phone or panel computer, by smart machine, to the configuration that intercom is correlated with.Processor unit 22 adopts STM32F103 single-chip microcomputer to complete, and bluetooth unit 25 adopts bluetooth module ripe on market, adopts bluetooth 4.0 module HC-05.
After bluetooth connects, pass through smart machine, first mode of operation is selected, if select public's intercom pattern, configuration information is transferred to bluetooth unit 25 by bluetooth by smart machine, is transferred to processor unit 22 by bluetooth unit 25, processor unit 22 control switch unit 26, first antenna 71 will be switched on, and the first antenna 71 is welded on master control borad 2, non-exchange.Now, user can select channel by smart machine, and under public's intercom pattern, working frequency range scope is 409.75MHZ-409.9875MHZ, altogether 20 Frequency Band Selection, and bandwidth is 12.5kHZ.Under public's intercom pattern, processor unit 22 is by controlling the output signal size of radio frequency unit 23, and control power output, make intercom under public's intercom pattern, power is no more than 0.5W.
If select amateurish intercom pattern, configuration information is transferred to bluetooth unit 25 by bluetooth by smart machine, processor unit 22 is transferred to by bluetooth unit 25, processor unit 22 control switch unit 26, antennal interface 8 will be switched on, antennal interface 8 is welded on master control borad 2, and belong to general SMA interface, user can select antenna as required.Now, user can select channel by smart machine, and under amateurish intercom pattern, working frequency range scope is 430MHZ-440MHZ, and bandwidth is 12.5kHZ.Under amateurish intercom pattern, processor unit 22 is by controlling the output signal size of radio frequency unit 23, and control power output, make intercom under amateurish intercom pattern, power is no more than 5W.
For the control terminal on smart machine, mainly transmit corresponding instruction by bluetooth to processor unit 22; This instruction is by protocol conventions, and can carry out self-defined with amendment according to program literary style, this is operating as usual procedure operation, belongs to public technology.Complete switch control rule as use STM32F103, and complete information exchange by the specification of bluetooth module, for person of ordinary skill in the field, belong to known technology.
Embodiment 2
As the design diagram that Fig. 1 is the first embodiment of the present invention, as the right side perspective view that Fig. 2 is the first embodiment, comprise the shell 1 with three-proof design, the master control borad 2 be arranged in shell 1, be arranged on the inner microphone that be electrically connected with master control borad 2 of shell 1 and loudspeaker 3, fixed housing 1 inside for power to master control borad 2 battery 4, the display screen 5 being embedded in shell 1 surface, be installed on shell 1 for the first knob of channel switch and the knob regulated for audio frequency, to breathe out for voice the PTT button and at least two antennas 7 that control, it is the module frame chart of the master control borad of the first embodiment of the present invention as Fig. 3, master control borad 2 comprises the Power Management Unit 21 be electrically connected with battery 4 for providing power supply to master control borad 2, processor unit 22, radio frequency unit 23, power amplifier unit 24, bluetooth unit 25 and switch element 26, radio frequency unit 23, power amplifier unit 24, bluetooth unit 25 and switch element 26 are all corresponding with processor unit 22 to be electrically connected, power amplifier unit 24 and radio frequency unit 23 are electrically connected, power amplifier unit 24 is connected respectively to antennal interface 8 and the first antenna 71 by switch element 26, wherein the first antenna 71 is public's interphone antenna, band limits is 409.75MHZ-409.9875MHZ, be welded on master control borad 2, be electrically connected with one end of switch element 26.Display screen 5 is corresponding with the processor unit 22 on master control borad 2 to be electrically connected.Display screen 5 can show the information such as electricity, signal, pattern and frequency.By bluetooth unit 25, intercom can be connected to the smart machine such as mobile phone or panel computer, by smart machine, to the configuration that intercom is correlated with.Processor unit 22 adopts STM32F103 single-chip microcomputer to complete, and bluetooth unit 25 adopts bluetooth module ripe on market, adopts bluetooth 4.0 module HC-05.
After bluetooth connects, pass through smart machine, first mode of operation is selected, if select public's intercom pattern, configuration information is transferred to bluetooth unit 25 by bluetooth by smart machine, is transferred to processor unit 22 by bluetooth unit 25, processor unit 22 control switch unit 26, first antenna 71 will be switched on, and the first antenna 71 is welded on master control borad 2, non-exchange.Now, user can select channel by smart machine, and under public's intercom pattern, working frequency range scope is 409.75MHZ-409.9875MHZ, altogether 20 Frequency Band Selection, and bandwidth is 12.5kHZ.Under public's intercom pattern, processor unit 22 is by controlling the output signal size of radio frequency unit 23, and control power output, make intercom under public's intercom pattern, power is no more than 0.5W.
If select amateurish intercom pattern, configuration information is transferred to bluetooth unit 25 by bluetooth by smart machine, processor unit 22 is transferred to by bluetooth unit 25, processor unit 22 control switch unit 26, antennal interface 8 will be switched on, antennal interface 8 is welded on master control borad 2, and belong to general SMA interface, user can select antenna as required.Now, user can select channel by smart machine, and under amateurish intercom pattern, working frequency range scope is 430MHZ-440MHZ, and bandwidth is 12.5kHZ.Under amateurish intercom pattern, processor unit 22 is by controlling the output signal size of radio frequency unit 23, and control power output, make intercom under amateurish intercom pattern, power is no more than 5W.
For the control terminal on smart machine, mainly transmit corresponding instruction by bluetooth to processor unit 22; This instruction is by protocol conventions, and can carry out self-defined with amendment according to program literary style, this is operating as usual procedure operation, belongs to public technology.As for use, STM32F103 completes switch control rule, display screen 5 drives, show various data message, and completes information exchange by the specification of bluetooth module, for person of ordinary skill in the field, belongs to known technology.
Embodiment 3
On the basis of embodiment 1 and embodiment 2, further,
Elected remaining intercom pattern of choosing a job, configuration information is transferred to bluetooth unit 25 by bluetooth by smart machine, processor unit 22 is transferred to by bluetooth unit 25, processor unit 22 control switch unit 26, antennal interface 8 will be switched on, antennal interface 8 is welded on master control borad 2, and belong to general SMA interface, user can select antenna as required.Now, user can select channel by smart machine, and under amateurish intercom pattern, working frequency range scope is 144MHZ-146MHZ and 430MHZ-440MHZ, and bandwidth is 12.5kHZ.Under amateurish intercom pattern, processor unit 22 is by controlling the output signal size of radio frequency unit 23, and control power output, make intercom under amateurish intercom pattern, power is no more than 5W.
Embodiment 4
On the basis of embodiment 1 and embodiment 2, further, if Fig. 6 is the design diagram of the third embodiment of the present invention; In two antennas, wherein one is connected by antennal interface, and antenna is exposed to enclosure, and user can change; An other astronomical cycle is in the inside of shell, thus from outside, this intercom only has an antenna.Be installed on the antenna of enclosure, adopt spring antenna, be welded on the correspondence position of switch element.
Further, an other antenna can adopt pcb board to carry antenna, is integrated in PCB by antenna, thus can save inner space, avoids installing.
Above embodiment just based on the preferred implementation of thinking of the present invention, does not form any limitation of the invention, and obviously, based on thinking of the present invention, can also have other change and substitute, these are all at the row of protection of the present invention.

Claims (10)

1. a multiband intelligence intercom, comprises the shell (1) with three-proof design, the master control borad (2) be arranged in shell (1), is arranged on battery (4) that the inner microphone that is electrically connected with master control borad (2) of shell (1) and loudspeaker (3), fixed housing (1) inside is used for powering to master control borad (2), is installed on shell (1) and breathes out the PTT button controlled for the first knob of channel switch and the knob regulated for audio frequency and for voice; Master control borad (2) comprises Power Management Unit (21), processor unit (22), radio frequency unit (23), power amplifier unit (24), battery (4) is connected to the correspondence position of Power Management Unit (21), radio frequency unit (23) and processor unit (22) are electrically connected, and power amplifier unit (24) and radio frequency unit (23) are electrically connected;
It is characterized in that: also comprise the bluetooth unit (25) be placed on master control borad (2), described bluetooth unit (25) is corresponding with the processor unit (22) on master control borad (2) to be electrically connected.
2. a kind of multiband intelligence intercom according to claim 1, is characterized in that: also comprise at least two antennas (7); Wherein, the first antenna (71) is fixedly welded on master control borad (2), and other antenna (7X) is installed by the antennal interface (8) be arranged on shell (1), and described antennal interface (8) is corresponding with master control borad (2) to be electrically connected.
3. a kind of multiband intelligence intercom according to claim 1, is characterized in that: also comprise the display screen (5) being embedded in shell (1) surface; Described display screen (5) is corresponding with the processor unit (22) on master control borad (2) to be electrically connected.
4. a kind of multiband intelligence intercom according to claim 2, is characterized in that: the SMA interface that described antennal interface (8) is standard.
5. a kind of multiband intelligence intercom according to claim 1, it is characterized in that: described master control borad (2) has switch element (26), power amplifier unit (24) is by switch element (26) and the first antenna (71) and antennal interface (8) is corresponding is electrically connected.
6. a kind of multiband intelligence intercom according to claim 1, is characterized in that: described radio frequency unit (23) at least can be operated in two band limits.
7. a kind of multiband intelligence intercom according to claim 1 or 6, is characterized in that: described radio frequency unit (23) at least can be operated in the frequency range of 430MHZ-440MHZ and 409.75MHZ-409.9875MHZ.
8. a kind of multiband intelligence intercom according to claim 1 or 6, is characterized in that: described radio frequency unit (23) at least can be operated in the frequency range of 430MHZ-440MHZ and 144MHZ-146MHZ.
9. a kind of multiband intelligence intercom according to claim 1, is characterized in that: described bluetooth unit (25) is low-power consumption bluetooth.
10. a kind of multiband intelligence intercom according to claim 3, is characterized in that: described display screen (5) is color screen.
CN201510950693.5A 2015-12-19 2015-12-19 A kind of multiband intelligence intercom Active CN105471457B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201510950693.5A CN105471457B (en) 2015-12-19 2015-12-19 A kind of multiband intelligence intercom

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201510950693.5A CN105471457B (en) 2015-12-19 2015-12-19 A kind of multiband intelligence intercom

Publications (2)

Publication Number Publication Date
CN105471457A true CN105471457A (en) 2016-04-06
CN105471457B CN105471457B (en) 2018-07-06

Family

ID=55608822

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201510950693.5A Active CN105471457B (en) 2015-12-19 2015-12-19 A kind of multiband intelligence intercom

Country Status (1)

Country Link
CN (1) CN105471457B (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106059614A (en) * 2016-08-04 2016-10-26 泉州凯利电子有限公司 Improved interphone
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
CN109831220A (en) * 2017-11-22 2019-05-31 北京小米移动软件有限公司 Mobile network's communicating terminal

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20120008533A1 (en) * 2006-09-21 2012-01-12 Active Control Technology Inc. Network for Confined Hazardous or Other Extreme Environments
CN202334507U (en) * 2011-11-23 2012-07-11 湖北沙鸥通信股份有限公司 Wireless ad-hoc-network communication machine
CN202998087U (en) * 2012-12-11 2013-06-12 中国电子科技集团公司第五十研究所 Ad hoc network hand-held digital interphone based on binary channels
CN103236872A (en) * 2013-03-25 2013-08-07 国家电网公司 Communication terminal, communication device and communication system
CN205657686U (en) * 2015-12-19 2016-10-19 西安拓奇电子科技有限公司 Multifrequency section intelligence intercom

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20120008533A1 (en) * 2006-09-21 2012-01-12 Active Control Technology Inc. Network for Confined Hazardous or Other Extreme Environments
CN202334507U (en) * 2011-11-23 2012-07-11 湖北沙鸥通信股份有限公司 Wireless ad-hoc-network communication machine
CN202998087U (en) * 2012-12-11 2013-06-12 中国电子科技集团公司第五十研究所 Ad hoc network hand-held digital interphone based on binary channels
CN103236872A (en) * 2013-03-25 2013-08-07 国家电网公司 Communication terminal, communication device and communication system
CN205657686U (en) * 2015-12-19 2016-10-19 西安拓奇电子科技有限公司 Multifrequency section intelligence intercom

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106059614A (en) * 2016-08-04 2016-10-26 泉州凯利电子有限公司 Improved interphone
CN106059614B (en) * 2016-08-04 2019-02-12 泉州凯利电子有限公司 A kind of modified 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
CN109831220A (en) * 2017-11-22 2019-05-31 北京小米移动软件有限公司 Mobile network's communicating terminal

Also Published As

Publication number Publication date
CN105471457B (en) 2018-07-06

Similar Documents

Publication Publication Date Title
CN105471457A (en) Multi- frequency band intelligent interphone
CN101937682B (en) Method and device for handling receiving voice
CN203445874U (en) Bluetooth interphone
US20200280331A1 (en) Methods and apparatus for reducing cellular telephone radiation exposure
CN205232324U (en) Camera based on wireless hotspot network is connected in sound wave configuration
CN204993792U (en) Wirelessly share portable outdoor audio amplifier
TWI256230B (en) Mobile phone including a wireless network module and a memory module
CN205584188U (en) Bimodulus intercom
CN105471458A (en) Dual-mode interphone
CN103281839A (en) Wireless intelligent household illuminating system
CN205693384U (en) A kind of novel radio charger based on router
CN205657686U (en) Multifrequency section intelligence intercom
CN202799060U (en) Audio high-fidelity wireless headset
CN203504636U (en) Mobile phone with interphone function
CN205657682U (en) Multifrequency section intelligence intercom based on WIFI connects
CN105187572A (en) Mobile phone case
CN109548198A (en) A kind of local microcellulor signal covering micro-base station structure
CN206807796U (en) A kind of low-power consumption bluetooth turns WIFI equipment
CN109103570A (en) loop antenna system and mobile terminal
CN204119311U (en) A kind of cordless telephone with cell phone incoming call pickup feature
CN107204784A (en) Multi-functional communications equipment
CN204422997U (en) There is the alarm clock of short-distance wireless communication function
CN203134027U (en) Anti-interference wireless doorbell
CN105610457A (en) Outdoor communication system
CN203368534U (en) Anti-radiation call-answering phone for GSM cellphone

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant