CN204810265U - Intercom - Google Patents
Intercom Download PDFInfo
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- CN204810265U CN204810265U CN201520461489.2U CN201520461489U CN204810265U CN 204810265 U CN204810265 U CN 204810265U CN 201520461489 U CN201520461489 U CN 201520461489U CN 204810265 U CN204810265 U CN 204810265U
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Abstract
The utility model discloses an intercom, including organism, little the control unit, power supply circuit, radio frequency module, audio power amplifier, loudspeaker, microphone and antenna, little the control unit, power supply circuit, radio frequency module, audio power amplifier, loudspeaker and microphone are located in the organism, power supply circuit and little the control unit are connected for for little the control unit power supply, radio frequency module respectively with little the control unit, microphone and antenna connection, connect audio power amplifier between radio frequency module and the loudspeaker, be equipped with display screen, numerical key and the key of talkbacking on the organism, display screen, numerical key and the key of talkbacking are connected respectively on little the control unit, it grouies busy the key still to be equipped with on the organism, group busy that the key -type connection is on little the control unit. This intercom optional is grouied busy or is called one to one.
Description
Technical field
The utility model relates to wireless communication technology field, specifically, relates to a kind of intercom.
Background technology
Along with the development of public mobile communication, intercom market progressively becomes an important specialized communication market, is one of communication products with fastest developing speed except mobile phone.Intercom is widely used in the every field of national economy, becomes the important Wireless Telecom Equipment of the departments such as national security, traffic administration, petrochemical industry, construction, property security personnel.
The drive chance of the outdoor activities such as trip, mountain-climbing, camping and number of times of people increases gradually, but at some remote sites, mobile phone signal is bad, by intercom and team communication.American-European countries has spread to each family in the early 1990s, and particularly when natural calamity occurs, intercom is the most effective the fastest means of communication.
Intercom common is in the market all receive at same channel one to one or transmit, and realizes communicating with each other, and can not select call or one-to-multiple call one to one according to actual conditions.
Utility model content
The purpose of this utility model is to provide the intercom of optionally grouping busy or calling out one to one.
The technical scheme that intercom disclosed in the utility model adopts is:
A kind of intercom, comprises body, micro-control unit, power circuit, radio-frequency module, audio frequency power amplifier, loudspeaker, radio frequency amplifying circuit, transmit-receive switch, Mike's signal amplification circuit, microphone and antenna, described micro-control unit, power circuit, radio-frequency module, audio frequency power amplifier, radio frequency amplifying circuit, transmit-receive switch, loudspeaker and microphone are located in body, described power circuit is connected with micro-control unit, for powering for micro-control unit, described radio-frequency module is connected with micro-control unit, connect audio frequency power amplifier between described radio-frequency module and loudspeaker, between described radio-frequency module and microphone, connect Mike's signal amplification circuit, between described radio-frequency module and transmit-receive switch, connect radio frequency amplifying circuit, described transmit-receive switch control antenna receives or transmits, and described body is provided with display screen, numerical key and intercommunication key, described display screen, numerical key and intercommunication key are connected on micro-control unit, described body is also provided with and grouies busy key, described in group busy that key is connected on micro-control unit.
Preferably, described radio frequency amplifying circuit comprises Received signal strength amplifying circuit and transmitting power amplifying circuit.
Preferably, described numerical key comprises 0 to 9 number key.
Preferably, described body is also provided with function key, described function key is connected with micro-control unit, and described function key comprises "+" key and "-" key, and described "+" key is for increasing volume, and described "-" key is for reducing volume.
Preferably, described body is also provided with locking key, described locking key is connected on micro-control unit.
Preferably, described intercom also comprises low pass filter, and described low pass filter is located between antenna and transmit-receive switch.
Disclosed in the utility model, the beneficial effect of intercom is: intercom selectively carries out stealth call to another intercom, avoids information to be obtained by other personnel, also can group busy, notify a group membership expeditiously.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model intercom;
Fig. 2 is the housing construction schematic diagram of the utility model intercom;
Fig. 3 is the call flow diagram of the utility model intercom;
Fig. 4 is the Signal reception flow chart of the utility model intercom.
Embodiment
Below in conjunction with specific embodiment and Figure of description the utility model be further elaborated and illustrate:
Please refer to Fig. 1, described intercom comprises body 10, micro-control unit 20, power circuit 30, radio-frequency module 40, audio frequency power amplifier 50, loudspeaker 60, microphone 70, antenna 80, low pass filter 90, radio frequency amplifying circuit, transmit-receive switch 100 and Mike's signal amplification circuit 130.Described radio frequency amplifying circuit comprises Received signal strength amplifying circuit 110 and transmitting power amplifying circuit 120.Described micro-control unit 20, power circuit 30, radio-frequency module 40, audio frequency power amplifier 50, radio frequency amplifying circuit, transmit-receive switch 100, loudspeaker 60 and microphone 70 are located in body 10.
Described power circuit 30 is connected with micro-control unit 20, for powering for micro-control unit 20.Described radio-frequency module 40 is connected with micro-control unit 20, audio frequency power amplifier 50 is connected between described radio-frequency module 40 and loudspeaker 60, Mike's signal amplification circuit 130 is connected between described radio-frequency module 40 and microphone 70, radio frequency amplifying circuit is connected between described radio-frequency module 40 and transmit-receive switch 100, described antenna 80 is connected low pass filter 90 with between transmit-receive switch 100, and described low pass filter 90 is for filter out noise.
Please refer to Fig. 2, described body 10 is provided with display screen 11, numerical key 12, grouies busy key 13, intercommunication key 14, locking key 15 and function key 16, described display screen 11, numerical key 12, group busy that key 13, intercommunication key 14, locking key 15 and function key 16 are all connected on micro-control unit 20.Described numerical key 12 comprises 0 to 9 number key, and described function key comprises "+" key and "-" key.
Be each intercom setting number in one group of intercom: numerical key a period of time in 0-9 number key is pressed to certain intercom, as 7 seconds, then can hear a sound of " beep ", the number of this this intercom of numeral, as pressed 1 number key 7 seconds, then the number of this intercom is " 1 ", is followed successively by other intercom and sets a number.This group intercom is provided with identical common signal channel.
Arrange the volume of intercom: press "+" key, often press once, volume tunes up one grade, presses "-" key, and often press successively, volume turns one grade down.
Please refer to Fig. 3, in one group of intercom, an intercom is called out for another intercom in this group intercom, first press the number of another intercom, pin the intercommunication key of this TV station intercom, talk facing to microphone, the voice signal that microphone receives first is amplified by Mike's signal amplification circuit 130, voice signal after amplification is sent to radio-frequency module, radio-frequency module carries out signal amplification through radio frequency amplifying circuit, by antenna, voice signal is sent on another intercom, until unclamp the intercommunication key of this TV station intercom, this TV station intercom stops voice signal.Press the number of another intercom, click the locking key of this TV station intercom, facing to microphone speech, in like manner, the voice signal that microphone receives is sent on another intercom by antenna, then clicks the locking key of this TV station intercom, and voice signal transmits and terminates.As grouied busy, pin and group busy key, facing to microphone speech, the voice signal that microphone receives spreads out of through antenna, and that unclamps this TV station intercom grouies busy key, and voice signal transmits and terminates.
Please refer to Fig. 4, what intercom received other intercom in this group intercom grouies busy that this intercom of signal is transformed into received speech signal on common signal channel automatically, through the audio frequency power amplifier of this intercom and loudspeaker, voice signal is played back, group busy end, this intercom turns back to holding state.When an intercom receives the session request of other intercom, receive the voice signal of this other intercom, end-of-dialogue, this intercom turns back to holding state.
Above-mentioned intercom selectively carries out stealth call to an intercom in this group intercom, avoids information to be obtained by other member of this group.Also can group busy the member of this group intercom, notify this group membership expeditiously.
Finally should be noted that; above embodiment is only in order to illustrate the technical solution of the utility model; but not the restriction to the utility model protection range; although done to explain to the utility model with reference to preferred embodiment; those of ordinary skill in the art is to be understood that; can modify to the technical solution of the utility model or equivalent replacement, and not depart from essence and the scope of technical solutions of the utility model.
Claims (6)
1. an intercom, comprises body, micro-control unit, power circuit, radio-frequency module, audio frequency power amplifier, loudspeaker, radio frequency amplifying circuit, transmit-receive switch, Mike's signal amplification circuit, microphone and antenna, described micro-control unit, power circuit, radio-frequency module, audio frequency power amplifier, radio frequency amplifying circuit, transmit-receive switch, loudspeaker and microphone are located in body, described power circuit is connected with micro-control unit, for powering for micro-control unit, described radio-frequency module is connected with micro-control unit, connect audio frequency power amplifier between described radio-frequency module and loudspeaker, between described radio-frequency module and microphone, connect Mike's signal amplification circuit, between described radio-frequency module and transmit-receive switch, connect radio frequency amplifying circuit, described transmit-receive switch control antenna receives or transmits, and described body is provided with display screen, numerical key and intercommunication key, described display screen, numerical key and intercommunication key are connected on micro-control unit, it is characterized in that, described body is also provided with and grouies busy key, described in group busy that key is connected on micro-control unit.
2. intercom as claimed in claim 1, it is characterized in that, described radio frequency amplifying circuit comprises Received signal strength amplifying circuit and transmitting power amplifying circuit.
3. intercom as claimed in claim 2, it is characterized in that, described numerical key comprises 0 to 9 number key.
4. intercom as claimed in claim 3, is characterized in that, described body is also provided with function key, described function key is connected with micro-control unit, described function key comprises "+" key and "-" key, and described "+" key is for increasing volume, and described "-" key is for reducing volume.
5. the intercom as described in any one of claim 1-4, is characterized in that, described body is also provided with locking key, and described locking key is connected on micro-control unit.
6. intercom as claimed in claim 5, it is characterized in that, also comprise low pass filter, described low pass filter is located between antenna and transmit-receive switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520461489.2U CN204810265U (en) | 2015-07-01 | 2015-07-01 | Intercom |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520461489.2U CN204810265U (en) | 2015-07-01 | 2015-07-01 | Intercom |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204810265U true CN204810265U (en) | 2015-11-25 |
Family
ID=54595013
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520461489.2U Active CN204810265U (en) | 2015-07-01 | 2015-07-01 | Intercom |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204810265U (en) |
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2015
- 2015-07-01 CN CN201520461489.2U patent/CN204810265U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |