CN201523410U - Multiband interphone - Google Patents
Multiband interphone Download PDFInfo
- Publication number
- CN201523410U CN201523410U CN200920166174XU CN200920166174U CN201523410U CN 201523410 U CN201523410 U CN 201523410U CN 200920166174X U CN200920166174X U CN 200920166174XU CN 200920166174 U CN200920166174 U CN 200920166174U CN 201523410 U CN201523410 U CN 201523410U
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- frequency range
- multiband
- intercom
- working frequency
- modules
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Abstract
The utility model provides a multiband interphone comprising a receiving circuit and a transmitting circuit, wherein the receiving circuit comprises two or more receiving modules which work at different preset working bands; the transmitting circuit comprises transmitting modules with the number being the same as that of the receiving modules; and the transmitting modules work at different preset working bands and correspond to the working bands of the receiving modules in a one-to-one manner. The multiband interphone can selectively work at a plurality of preset working bands, and reduce mutual interference between adjacent users to the greatest extent.
Description
Technical field
The utility model relates to a kind of multiband intercom that can be operated in two or more frequency range sections.
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 working frequency range, 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 multiband intercom, make the user can between several default frequency ranges, adjust the working frequency range 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 multiband intercom, comprise receiving circuit and radiating circuit, described receiving circuit comprises two or more receiver modules, and described receiver module is operated in different default working frequency range; Described radiating circuit comprises the transmitter module identical with receiver module quantity, and described transmitter module is operated in different default working frequency range, and corresponding one by one with the working frequency range of described receiver module.
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 the frequency range switching device shifter of the working frequency range that is used to control the multiband intercom.
The utility model proposes a kind of multiband intercom, comprise receiving circuit and radiating circuit, described receiving circuit comprises two or more receiver modules, and described receiver module is operated in different default working frequency range; Described radiating circuit comprises the transmitter module identical with receiver module quantity, and described transmitter module is operated in different default working frequency range, and corresponding one by one with the working frequency range of described receiver module.Multiband intercom of the present utility model can optionally be operated in several default working frequency range, 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 working frequency range; Described radiating circuit 2 comprises two transmitter modules parallel with one another, and described transmitter module is operated in different default working frequency range, and corresponding one by one with the working frequency range of described receiver module.As preferably, one of them receiver module is operated in VHF frequency range: 136～174.9875MHz; Another receiver module is operated in uhf band: 400～470.9875MHz.
The frequency range switching device shifter 12 that also comprises the working frequency range that is used to control the multiband 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. a multiband intercom 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 working frequency range; Described radiating circuit comprises the transmitter module identical with receiver module quantity, and described transmitter module is operated in different default working frequency range, and corresponding one by one with the working frequency range of described receiver module.
2. multiband intercom according to claim 1 is characterized in that the receiver module of described receiving circuit is parallel with one another.
3. multiband intercom according to claim 1 is characterized in that the transmitter module of described radiating circuit is parallel with one another.
4. multiband intercom according to claim 1 is characterized in that, also comprises the frequency range switching device shifter of the working frequency range that is used to control the multiband intercom.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920166174XU CN201523410U (en) | 2009-07-19 | 2009-07-19 | Multiband interphone |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920166174XU CN201523410U (en) | 2009-07-19 | 2009-07-19 | Multiband interphone |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201523410U true CN201523410U (en) | 2010-07-07 |
Family
ID=42509586
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200920166174XU Expired - Fee Related CN201523410U (en) | 2009-07-19 | 2009-07-19 | Multiband interphone |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201523410U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103379390A (en) * | 2012-04-18 | 2013-10-30 | 泉州欧讯电子有限公司 | A vehicle-mounted intercom having double frequency bands and capable of simultaneous reception |
| CN103378866A (en) * | 2012-04-18 | 2013-10-30 | 泉州欧讯电子有限公司 | A double-frequency band vehicle-mounted intercom having two operating systems |
| CN103595429A (en) * | 2013-10-26 | 2014-02-19 | 泉州欧讯电子有限公司 | Vehicle-mounted seven-wave-band interphone |
| CN105071822A (en) * | 2012-04-18 | 2015-11-18 | 泉州欧讯电子有限公司 | Vehicle-mounted intercom having a dual-band duplex cross-band transfer function |
| CN105338429A (en) * | 2015-12-10 | 2016-02-17 | 南京正泽科技有限公司 | Interphone voice frequency signal relay system |
| 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 CN200920166174XU patent/CN201523410U/en not_active Expired - Fee Related
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103379390A (en) * | 2012-04-18 | 2013-10-30 | 泉州欧讯电子有限公司 | A vehicle-mounted intercom having double frequency bands and capable of simultaneous reception |
| CN103378866A (en) * | 2012-04-18 | 2013-10-30 | 泉州欧讯电子有限公司 | A double-frequency band vehicle-mounted intercom having two operating systems |
| CN103379390B (en) * | 2012-04-18 | 2015-11-18 | 泉州欧讯电子有限公司 | There is the Vehicular intercom that two-band can receive simultaneously |
| CN105071822A (en) * | 2012-04-18 | 2015-11-18 | 泉州欧讯电子有限公司 | Vehicle-mounted intercom having a dual-band duplex cross-band transfer function |
| CN105207691A (en) * | 2012-04-18 | 2015-12-30 | 泉州欧讯电子有限公司 | Vehicle-mounted interphone conducting receiving at two frequency bands simultaneously |
| CN105207691B (en) * | 2012-04-18 | 2017-07-25 | 泉州欧讯电子有限公司 | The Vehicular intercom that two-band is received simultaneously |
| CN103595429A (en) * | 2013-10-26 | 2014-02-19 | 泉州欧讯电子有限公司 | Vehicle-mounted seven-wave-band interphone |
| CN105338429A (en) * | 2015-12-10 | 2016-02-17 | 南京正泽科技有限公司 | Interphone voice frequency signal relay system |
| CN105338429B (en) * | 2015-12-10 | 2022-05-20 | 南京正泽科技股份有限公司 | Intercom audio signal relay system |
| 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 |