CN201523411U - Dual-display multi-frequency interphone - Google Patents
Dual-display multi-frequency interphone Download PDFInfo
- Publication number
- CN201523411U CN201523411U CN2009201661754U CN200920166175U CN201523411U CN 201523411 U CN201523411 U CN 201523411U CN 2009201661754 U CN2009201661754 U CN 2009201661754U CN 200920166175 U CN200920166175 U CN 200920166175U CN 201523411 U CN201523411 U CN 201523411U
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- Prior art keywords
- frequency
- intercom
- utility
- receiver module
- interphone
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- Expired - Fee Related
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- Interconnected Communication Systems, Intercoms, And Interphones (AREA)
Abstract
The utility model discloses a dual-display multi-frequency interphone, comprising a receiving circuit and a transmitting circuit, wherein the receiving circuit comprises two or more receiving modules which work under different preset working frequencies; and the transmitting circuit comprises transmitting modules which have the same number with the receiving modules, work under different preset working frequencies and correspond to the working frequencies of the receiving modules in a one-to-one way. The dual-display multi-frequency interphone can selectively work under a plurality of preset working frequencies and reduce the interference between adjacent users to a maximum extent.
Description
Technical field
The utility model relates to a kind of two multi-frequency intercoms that show that can be operated in two or more frequency bands.
Background technology
Intercom has irreplaceable effect in the short distance communication.Especially in security fields,, all be very important communication tool as industries such as police, security personnel.Existing civilian intercom adopts the frequency locking technology substantially, makes intercom can't change operating frequency, takies frequency range to prevent the user.Though but this frequency locking can be good at carrying out radio control, along with the generally use of intercom, the user disturbs mutually through regular meeting, and influence is used.
The utility model content
At defective that exists in the prior art and deficiency, the purpose of this utility model is to propose a kind of two multi-frequency intercom that shows, make the user can between several default frequencies, adjust the operating frequency of intercom, reduce the situation of adjoining user's phase mutual interference as far as possible.
In order to achieve the above object, the utility model proposes and propose a kind of two multi-frequency intercom that shows, comprise receiving circuit and radiating circuit, described receiving circuit comprises two or more receiver modules, and described receiver module is operated in different default operating frequencies; Described radiating circuit comprises the transmitter module identical with receiver module quantity, and described transmitter module is operated in different default operating frequencies, and corresponding one by one with the operating frequency of described receiver module; Also comprise display screen and display driver, the described display screen of described display driver drives shows described two groups of operating frequencies.
Preferred as technique scheme, the receiver module of described receiving circuit is parallel with one another.
Preferred as technique scheme, the transmitter module of described radiating circuit is parallel with one another.
Preferred as technique scheme also comprises being used to control two frequency switching mechanisms that show the operating frequency of multi-frequency intercoms.
The utility model proposes a kind of two multi-frequency intercom that shows, comprise receiving circuit and radiating circuit, described receiving circuit comprises two or more receiver modules, and described receiver module is operated in different default operating frequencies; Described radiating circuit comprises the transmitter module identical with receiver module quantity, and described transmitter module is operated in different default operating frequencies, and corresponding one by one with the operating frequency of described receiver module.Two multi-frequency intercom that shows of the present utility model can optionally be operated in several default operating frequencies, to reduce the phase mutual interference between the contiguous user to greatest extent.
Description of drawings
Fig. 1 is the circuit diagram of the utility model preferred embodiment;
Fig. 2 is the structural representation of the utility model preferred embodiment.
Embodiment
Below in conjunction with accompanying drawing, embodiment of the present utility model is described in further detail.For the person of ordinary skill in the field, to the detailed description of the present utility model, above-mentioned and other purposes of the present utility model, feature and advantage will be apparent.
The intercom that has radio function that the utility model preferred embodiment proposes, its structure as shown in Figure 1 and Figure 2, comprise receiving circuit 1 and radiating circuit 2, described receiving circuit 1 comprises two receiver modules parallel with one another, and described two receiver modules are operated in different default operating frequencies; Described radiating circuit 2 comprises two transmitter modules parallel with one another, and described transmitter module is operated in different default operating frequencies, and corresponding one by one with the operating frequency of described receiver module.Also comprise and be used to control two frequency switching mechanisms 11 that show the operating frequency of multi-frequency intercom.
As depicted in figs. 1 and 2, intercom comprises: be used to receive and send the receiving lines 1 and the emission circuit 2 of radio signal, and the oscillating circuit 3 and microprocessor 4, liquid crystal driver 5, illuminating line 6, FM radio module 7, illuminating lamp 8, FM radio switch 9, luminous lamp switch 10, frequency diverter switch 11, frequency range diverter switch 12, LCDs and the keyboard 13 that are used for amplification signal.Fig. 1, intercom shown in Figure 2 have duplexing working frequency and duplex is made frequency range.
Display driver 5 (HD44780) drives LCDs 13 and shows two class frequencys, switches to the frequency of current this class frequency by two frequency switch keys 11, and this two class frequency can belong to a frequency range, also can belong to different frequency range.Whether microprocessor 4 (EM78P568) opens two functions of waiting for according to list/pair section switch key 12, and a group of LCDs 13 demonstrations or oscillator 3, emission circuit 2, the receiving lines 1 of the pairing frequency range of two class frequencys are waited for.Control the ON/OFF of the illuminating lamp 8 in the illuminating line 6 by luminous lamp switch 10, thereby realize illumination functions.FM radio switch 9 can open or cut out frequency-shift keying radio reception module 7 (CDCL6010) circuit and realize FM radio.
Though; the utility model clearly demonstrates by above embodiment and accompanying drawing thereof; yet under the situation that does not deviate from the utility model spirit and essence thereof; the person of ordinary skill in the field works as can make various corresponding variations and correction according to the utility model, but these corresponding variations and correction all should belong to the protection range of claim of the present utility model.
Claims (4)
1. two multi-frequency intercom that shows comprises receiving circuit and radiating circuit, it is characterized in that described receiving circuit comprises two or more receiver modules, and described receiver module is operated in different default operating frequencies; Described radiating circuit comprises the transmitter module identical with receiver module quantity, and described transmitter module is operated in different default operating frequencies, and corresponding one by one with the operating frequency of described receiver module; Also comprise display screen and display driver, the described display screen of described display driver drives shows described two groups of operating frequencies.
2. two multi-frequency intercom that shows according to claim 1 is characterized in that the receiver module of described receiving circuit is parallel with one another.
3. two multi-frequency intercom that shows according to claim 1 is characterized in that the transmitter module of described radiating circuit is parallel with one another.
4. two multi-frequency intercom that shows according to claim 1 is characterized in that, also comprises being used to control two frequency switching mechanisms that show the operating frequency of multi-frequency intercom.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201661754U CN201523411U (en) | 2009-07-19 | 2009-07-19 | Dual-display multi-frequency interphone |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201661754U CN201523411U (en) | 2009-07-19 | 2009-07-19 | Dual-display multi-frequency interphone |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201523411U true CN201523411U (en) | 2010-07-07 |
Family
ID=42509587
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201661754U Expired - Fee Related CN201523411U (en) | 2009-07-19 | 2009-07-19 | Dual-display multi-frequency interphone |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201523411U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103607214A (en) * | 2013-10-26 | 2014-02-26 | 泉州欧讯电子有限公司 | Four-waveband transmission vehicle-borne interphone |
| CN106506031A (en) * | 2016-11-14 | 2017-03-15 | 北京小米移动软件有限公司 | The method and device of adjustment talk back equipment frequency |
-
2009
- 2009-07-19 CN CN2009201661754U patent/CN201523411U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103607214A (en) * | 2013-10-26 | 2014-02-26 | 泉州欧讯电子有限公司 | Four-waveband transmission vehicle-borne interphone |
| CN106506031A (en) * | 2016-11-14 | 2017-03-15 | 北京小米移动软件有限公司 | The method and device of adjustment talk back equipment frequency |
| CN106506031B (en) * | 2016-11-14 | 2019-03-22 | 北京小米移动软件有限公司 | Adjust the method and device of talk back equipment frequency |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100707 Termination date: 20150719 |
|
| EXPY | Termination of patent right or utility model |