CN108173567A - The frequency modulation system and its frequency modulation method of a kind of multiband interphone - Google Patents
The frequency modulation system and its frequency modulation method of a kind of multiband interphone Download PDFInfo
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- CN108173567A CN108173567A CN201810125168.3A CN201810125168A CN108173567A CN 108173567 A CN108173567 A CN 108173567A CN 201810125168 A CN201810125168 A CN 201810125168A CN 108173567 A CN108173567 A CN 108173567A
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- 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
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- 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
- H04B1/005—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 adapting radio receivers, transmitters andtransceivers for operation on two or more bands, i.e. frequency ranges
- H04B1/0064—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 adapting radio receivers, transmitters andtransceivers for operation on two or more bands, i.e. frequency ranges with separate antennas for the more than one band
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Transceivers (AREA)
- Interconnected Communication Systems, Intercoms, And Interphones (AREA)
Abstract
The present invention provides a kind of frequency modulation system and its frequency modulation method of multiband interphone, level-one modem module isolates the second frequency band signals and the second frequency band signals is sent to secondary modulation demodulating unit in the frequency modulation system, and the first frequency band signals after demodulation are sent to control unit；The second frequency band signals after demodulation are sent to control unit delay process by secondary modulation demodulating unit；Second frequency band signals of transmitting are sent to time control signal transmitting and receiving unit by control unit, and signal transmitting and receiving unit sends control command to time control signal transmitting and receiving unit, so that the second frequency band signals are emitted by two level dual-mode antenna.The frequency modulation system of the present invention, two-stage O_3-BAC demodulating unit is set, to realize the signal that two frequency ranges are isolated from the radiofrequency signal of receiving, the demodulation of signal is carried out respectively to shorten the response time of signal, and when emitting signal, it using the mechanism individually emitted, is sent respectively in an alternate fashion, to reduce the interference between signal.
Description
Technical field
The present invention relates to communication technique field, specifically, being related to the frequency modulation system and its tune of a kind of multiband interphone
Frequency method.
Background technology
Intercom is a kind of bidirectional mobile communication instrument, can be conversed in the case where not needing to any network support,
It suitable for being relatively fixed and the occasion of frequently conversing, is generated without telephone expenses, suitable for being relatively fixed and the occasion of frequently conversing.It is right
Say that machine there are three categories at present：Analog walkie-talkie, digital walkie-talkie, IP intercoms.General intercom is all same frequency intercommunication, one
As soon as receiving the signal for being loaded with intercommunication content in a frequency range, the use of such intercom is restricted very much, also wastes the resource of frequency range.
Invention content
In place of solving above-mentioned the deficiencies in the prior art, the purpose of the present invention is to provide a kind of multiband interphones
Frequency modulation system and its frequency modulation method, the defects of to overcome in the prior art.
To achieve these goals, the present invention provides a kind of frequency modulation system of multiband interphone, the frequency modulation systems
Including radio-frequency receiving-transmitting antenna, signal transmitting and receiving unit, level-one modem module, secondary modulation demodulating unit, time control signal transmitting and receiving
Unit, two level dual-mode antenna, control unit and intercommunication unit；Wherein, radio-frequency receiving-transmitting antenna is connect with signal transmitting and receiving unit, signal
Transmit-Receive Unit is connect with level-one modem module, and level-one modem module is single with secondary modulation demodulating unit and control respectively
Member connection, secondary modulation demodulating unit connect respectively with time control signal transmitting and receiving unit and control unit, control unit respectively with it is right
Say that unit is connected with time control signal transmitting and receiving unit；Level-one modem module for the first frequency band signals of modulation /demodulation, is isolated
Second frequency band signals are simultaneously sent to secondary modulation demodulating unit by the second frequency band signals, and the first frequency band signals after demodulation are sent
To control unit；Secondary modulation demodulating unit, for the second frequency band signals of modulation /demodulation, and by the second frequency band signals after demodulation
It is sent to control unit delay process；Time control signal transmitting and receiving unit, for emitting the second frequency band signals, control unit is by transmitting
Second frequency band signals are sent to time control signal transmitting and receiving unit, and signal transmitting and receiving unit sends control command to time control signal transmitting and receiving list
Member, so that the second frequency band signals are emitted by two level dual-mode antenna.
As the further explanation to frequency modulation system of the present invention, it is preferable that level-one modem module includes low
Bandpass filter, high-pass filter, the first digital oscillator and the first delay circuit；Wherein, signal transmitting and receiving unit respectively with high pass
Wave filter is connected with low-pass filter, and low-pass filter is connect with secondary modulation demodulating unit, high-pass filter and the first number
Oscillator connects, and the first digital oscillator is connect by the first delay circuit with control unit.
As the further explanation to frequency modulation system of the present invention, it is preferable that secondary modulation demodulating unit includes the
Two digital oscillators and the second delay circuit；Wherein, level-one modem module is connect with the second digital oscillator, the second number
Oscillator is connect by the second delay circuit with control unit.
As the further explanation to frequency modulation system of the present invention, it is preferable that when time control signal transmitting and receiving unit includes
Clock circuit and third delay circuit；Wherein, control unit is connect by third delay circuit with clock circuit, clock circuit and letter
The connection of number Transmit-Receive Unit.
In order to realize another object of the present invention, the present invention also provides a kind of tune using the multiband interphone
The frequency modulation method of display system, the frequency modulation method include the following steps：
Step 1)：The radiofrequency signal that signal transmitting and receiving unit receives is sent to level-one modem module, to isolate first
Frequency band signals and the second frequency band signals, and the second frequency band signals are sent to secondary modulation demodulating unit；
Step 2)：Level-one modem module the first frequency band signals of frequency-conversion processing obtain the first frequency band audio letter after demodulation
Number it is sent to control unit；Secondary modulation demodulating unit the second frequency band signals of frequency-conversion processing, obtain the second frequency band audio after demodulation
Signal is sent to control unit, and intercommunication unit sends control command to control unit, to realize the first frequency band audio signal and the
The order output of two frequency band audio signals；
Step 3)：Intercommunication unit exports the first frequency band audio signal and the second frequency band audio signal, and control unit sends the
One frequency band audio signal to level-one modem module is modulated to obtain the first frequency band signals, and control unit sends the second frequency band audio
Signal is modulated to obtain the second frequency band signals to secondary modulation demodulating unit；
Step 4)：Control unit sends the second frequency band signals to time control signal transmitting and receiving unit delay and waits for；Meanwhile first frequency
Segment signal is emission of radio frequency signals by signal transmitting and receiving cell processing, and sends control command to time control signal transmitting and receiving unit, time control
Signal transmitting and receiving unit emits the second frequency band signals.
The frequency modulation system of the present invention sets two-stage O_3-BAC demodulating unit, is isolated from the radiofrequency signal of receiving with realizing
The signal of two frequency ranges carries out the demodulation of signal to shorten the response time of signal, and when emitting signal respectively, using list
The mechanism solely emitted, is sent respectively in an alternate fashion, to reduce the interference between signal.
Description of the drawings
Fig. 1 is the structure diagram of the frequency modulation system of the multiband interphone of the present invention；
Fig. 2 is the structure diagram of the level-one modem module of the present invention；
Fig. 3 is the structure diagram of the secondary modulation demodulating unit of the present invention；
Fig. 4 is the structure diagram of the time control signal transmitting and receiving unit of the present invention.
Specific embodiment
It is attached in conjunction with appended preferred embodiment in order to further appreciate that structure, feature and the other purposes of the present invention
With attached drawing, detailed description are as follows, this attached drawing embodiment described is merely to illustrate technical scheme of the present invention, and non-limiting
Invention.
As shown in FIG. 1, FIG. 1 is the structure diagrams of the frequency modulation system of the multiband interphone of the present invention；The frequency modulation system
System includes radio-frequency receiving-transmitting antenna 1, signal transmitting and receiving unit 2, level-one modem module 3, secondary modulation demodulating unit 4, time control letter
Number Transmit-Receive Unit 5, two level dual-mode antenna 6, control unit 7 and intercommunication unit 8；Wherein, radio-frequency receiving-transmitting antenna 1 and signal transmitting and receiving list
Member 2 connects, and signal transmitting and receiving unit 2 connect with level-one modem module 3, level-one modem module 3 respectively with secondary modulation
Demodulating unit 4 and control unit 7 connect, secondary modulation demodulating unit 4 respectively with time control signal transmitting and receiving unit 5 and control unit 7
Connection, control unit 7 are connect respectively with intercommunication unit 8 and time control signal transmitting and receiving unit 5；Level-one modem module 3, for adjusting
System the first frequency band signals of demodulation, isolate the second frequency band signals and the second frequency band signals are sent to secondary modulation demodulating unit 4,
The first frequency band signals after demodulation are sent to control unit 7；Secondary modulation demodulating unit 4, for the second frequency range of modulation /demodulation
Signal, and the second frequency band signals after demodulation are sent to 7 delay process of control unit；Time control signal transmitting and receiving unit 5, for sending out
The second frequency band signals are penetrated, the second frequency band signals of transmitting are sent to time control signal transmitting and receiving unit 5, signal transmitting and receiving by control unit 7
Unit 2 sends control command to time control signal transmitting and receiving unit 5, so that the second frequency band signals are emitted by two level dual-mode antenna 6.
The frequency modulation system of the present invention sets two-stage O_3-BAC demodulating unit, is isolated from the radiofrequency signal of receiving with realizing
The signal of two frequency ranges carries out the demodulation of signal to shorten the response time of signal, by control unit delay process second respectively
Frequency band signals, with the frequency cycle that the first frequency band signals emit, using the mechanism individually emitted, interval transmitting the second frequency range letter
Number, to reduce the interference between signal.
Fig. 2 is please referred to, Fig. 2 is the structure diagram of the level-one modem module of the present invention；Level-one modem module 3
Including low-pass filter 31, high-pass filter 32, the first digital oscillator 33 and the first delay circuit 34；Wherein, signal transmitting and receiving
Unit 2 is connect respectively with high-pass filter 32 and low-pass filter 31, and low-pass filter 31 connects with secondary modulation demodulating unit 4
It connects, high-pass filter 32 is connect with the first digital oscillator 33, and the first digital oscillator 33 passes through the first delay circuit 34 and control
Unit 7 processed connects.The radiofrequency signal that signal transmitting and receiving unit 2 receives is using the parallel transfer mode of two-wire, by high-pass filter
32 isolate the first frequency band signals, and pass through the first digital oscillator 33 and be demodulated into the first frequency band audio signal, the first frequency range sound
Frequency signal is sent to control unit 8 by the first delay circuit 34；Low-pass filter 31 isolates the second frequency band signals, and sends
It is demodulated to secondary modulation demodulating unit 4；It sets the first delay circuit 34 that can be pressed in the control of intercommunication generator terminal and answers first
During frequency range button, the first frequency band audio signal is played.
Fig. 3 is please referred to, Fig. 3 is the structure diagram of the secondary modulation demodulating unit of the present invention；Secondary modulation demodulating unit 4
Including the second digital oscillator 41 and the second delay circuit 42；Wherein, 3 and second digital oscillator 41 of level-one modem module
Connection, the second digital oscillator 41 are connect by the second delay circuit 42 with control unit 7.Second frequency band signals are by the second number
Oscillator 41 is demodulated into the second frequency band audio signal, and the second frequency band audio signal is sent to control list by the second delay circuit 42
Member 8, the second delay circuit 42 of setting can play the second frequency range sound when the control of intercommunication generator terminal presses and answers the second frequency range button
Frequency signal.
Fig. 4 is please referred to, Fig. 4 is the structure diagram of the time control signal transmitting and receiving unit of the present invention.Time control signal transmitting and receiving unit 5
Including clock circuit 51 and third delay circuit 52；Wherein, control unit 7 is connected by third delay circuit 52 and clock circuit 51
It connects, clock circuit 51 is connect with signal transmitting and receiving unit 2.The first frequency band audio signal that intercommunication unit 8 inputs, by main control unit
7, which are sent to level-one modem module 3, modulates, and is then handled by signal transmitting and receiving unit 2 as radiofrequency signal, by radio-frequency receiving-transmitting antenna
1 transmitting；The second frequency band audio signal that intercommunication unit 8 inputs, is sent to secondary modulation demodulating unit 4 by main control unit 7 and adjusts
System, then the second frequency band audio signal of modulation is sent in time control signal transmitting and receiving unit 5 by main control unit 7, in time control signal
5 second frequency band audio signal of Transmit-Receive Unit is treated as radiofrequency signal, by 52 waiting signal Transmit-Receive Unit 2 of third delay circuit
Control command, signal transmitting and receiving unit 2 enters sleep state, the emission state of signal transmitting and receiving unit 2, sleep shape after emitting signal
Alternately, and interval time is controlled by control unit 7 for state and reception state, and once signal transmitting and receiving unit 2 is into sleep state
With regard to sending clock circuit 51 of the trigger signal to time control signal transmitting and receiving unit 5, clock circuit 51 triggers third delay circuit 52, makes
Two level dual-mode antenna 6 emits radiofrequency signal, and emission state, the sleep state of clock circuit 51 are also controlled by control unit 7, to protect
Radio-frequency receiving-transmitting antenna 1 and 6 alternate emission signal of two level dual-mode antenna are demonstrate,proved, avoids generating interference between the signal of two frequency ranges.
The present invention also provides a kind of frequency modulation method of the frequency modulation system using the multiband interphone, the frequency modulation
Method includes the following steps：
Step 1)：The radiofrequency signal that signal transmitting and receiving unit 2 receives is sent to level-one modem module 3, to isolate the
One frequency band signals and the second frequency band signals, and the second frequency band signals are sent to secondary modulation demodulating unit 4.
Step 2)：3 the first frequency band signals of frequency-conversion processing of level-one modem module obtain the first frequency band audio letter after demodulation
Number it is sent to control unit 7；4 the second frequency band signals of frequency-conversion processing of secondary modulation demodulating unit, obtain the second frequency range sound after demodulation
Frequency signal is sent to control unit 7, and intercommunication unit 8 sends control command to control unit 7, to realize the first frequency band audio signal
With the order output of the second frequency band audio signal.
Step 3)：Intercommunication unit 8 exports the first frequency band audio signal and the second frequency band audio signal, control unit 7 are sent
First frequency band audio signal to the modulation of level-one modem module 3 obtains the first frequency band signals, and control unit 7 sends the second frequency range
Audio signal to the modulation of secondary modulation demodulating unit 4 obtains the second frequency band signals.
Step 4)：Control unit 7 sends the second frequency band signals to the delay of time control signal transmitting and receiving unit 5 and waits for；Meanwhile first
Frequency band signals are handled by signal transmitting and receiving unit 2 as emission of radio frequency signals, and send control command to time control signal transmitting and receiving unit 5,
Time control signal transmitting and receiving unit 5 emits the second frequency band signals.
It is to be understood that foregoing invention content and specific embodiment are intended to prove technical solution provided by the present invention
Practical application should not be construed as limiting the scope of the present invention.Those skilled in the art are in spirit and principles of the present invention
It is interior, when can various modifications may be made, equivalent replacement or improvement.Protection scope of the present invention is subject to the appended claims.
Claims (5)
1. a kind of frequency modulation system of multiband interphone, which is characterized in that the frequency modulation system include radio-frequency receiving-transmitting antenna (1),
Signal transmitting and receiving unit (2), level-one modem module (3), secondary modulation demodulating unit (4), time control signal transmitting and receiving unit (5),
Two level dual-mode antenna (6), control unit (7) and intercommunication unit (8)；Wherein,
Radio-frequency receiving-transmitting antenna (1) is connect with signal transmitting and receiving unit (2), signal transmitting and receiving unit (2) and level-one modem module (3)
Connection, level-one modem module (3) are connect respectively with secondary modulation demodulating unit (4) and control unit (7), secondary modulation solution
Adjust unit (4) connect respectively with time control signal transmitting and receiving unit (5) and control unit (7), control unit (7) respectively with intercommunication unit
(8) it is connected with time control signal transmitting and receiving unit (5)；
Level-one modem module (3) for the first frequency band signals of modulation /demodulation, isolates the second frequency band signals and by the second frequency
Segment signal is sent to secondary modulation demodulating unit (4), and the first frequency band signals after demodulation are sent to control unit (7)；
Secondary modulation demodulating unit (4) for the second frequency band signals of modulation /demodulation, and the second frequency band signals after demodulation is sent
To control unit (7) delay process；
Time control signal transmitting and receiving unit (5), for emitting the second frequency band signals, control unit (7) is by the second frequency band signals of transmitting
It is sent to time control signal transmitting and receiving unit (5), signal transmitting and receiving unit (2) sends control command to time control signal transmitting and receiving unit (5), with
The second frequency band signals is made to be emitted by two level dual-mode antenna (6).
2. frequency modulation system as described in claim 1, which is characterized in that level-one modem module (3) is including low-pass filter
(31), high-pass filter (32), the first digital oscillator (33) and the first delay circuit (34)；Wherein, signal transmitting and receiving unit (2)
It is connect respectively with high-pass filter (32) and low-pass filter (31), low-pass filter (31) and secondary modulation demodulating unit (4)
Connection, high-pass filter (32) are connect with the first digital oscillator (33), and the first digital oscillator (33) passes through the first delay electricity
Road (34) is connect with control unit (7).
3. frequency modulation system as described in claim 1, which is characterized in that secondary modulation demodulating unit (4) shakes including the second number
Swing device (41) and the second delay circuit (42)；Wherein, level-one modem module (3) is connect with the second digital oscillator (41),
Second digital oscillator (41) is connect by the second delay circuit (42) with control unit (7).
4. frequency modulation system as described in claim 1, which is characterized in that time control signal transmitting and receiving unit (5) is including clock circuit
(51) and third delay circuit (52)；Wherein, control unit (7) is connected by third delay circuit (52) and clock circuit (51)
It connects, clock circuit (51) is connect with signal transmitting and receiving unit (2).
5. a kind of frequency modulation method of the frequency modulation system of multiband interphone using as described in claim 1-4 is any, feature
It is, the frequency modulation method includes the following steps：
Step 1)：The radiofrequency signal that signal transmitting and receiving unit (2) receives is sent to level-one modem module (3), to isolate the
One frequency band signals and the second frequency band signals, and the second frequency band signals are sent to secondary modulation demodulating unit (4)；
Step 2)：Level-one modem module (3) first frequency band signals of frequency-conversion processing, obtain the first frequency band audio signal after demodulation
It is sent to control unit (7)；Secondary modulation demodulating unit (4) second frequency band signals of frequency-conversion processing, obtain the second frequency range after demodulation
Audio signal is sent to control unit (7), and intercommunication unit (8) sends control command to control unit (7), to realize the first frequency range
The order output of audio signal and the second frequency band audio signal；
Step 3)：Intercommunication unit (8) exports the first frequency band audio signal and the second frequency band audio signal, and control unit (7) is sent
First frequency band audio signal to level-one modem module (3) modulation obtains the first frequency band signals, and control unit (7) sends second
Frequency band audio signal to secondary modulation demodulating unit (4) modulation obtains the second frequency band signals；
Step 4)：Control unit (7) sends the second frequency band signals to time control signal transmitting and receiving unit (5) delay and waits for；Meanwhile first
It is emission of radio frequency signals that frequency band signals are handled by signal transmitting and receiving unit (2), and sends control command to time control signal transmitting and receiving unit
(5), time control signal transmitting and receiving unit (5) emits the second frequency band signals.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810125168.3A CN108173567B (en) | 2018-02-08 | 2018-02-08 | Frequency modulation system and frequency modulation method of multi-band interphone |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810125168.3A CN108173567B (en) | 2018-02-08 | 2018-02-08 | Frequency modulation system and frequency modulation method of multi-band interphone |
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| Publication Number | Publication Date |
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| CN108173567A true CN108173567A (en) | 2018-06-15 |
| CN108173567B CN108173567B (en) | 2023-07-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810125168.3A Active CN108173567B (en) | 2018-02-08 | 2018-02-08 | Frequency modulation system and frequency modulation method of multi-band interphone |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115296691A (en) * | 2022-08-01 | 2022-11-04 | 深圳金信诺高新技术股份有限公司 | Signal receiving and transmitting device and wireless network equipment |
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| CN207884622U (en) * | 2018-02-08 | 2018-09-18 | 福建省万华电子科技有限公司 | A kind of frequency modulation system of multiband interphone |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101741803A (en) * | 2009-12-24 | 2010-06-16 | 中国科学技术大学 | Multi-band frequency spectrum aggregating wireless transmitter-receiver device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115296691A (en) * | 2022-08-01 | 2022-11-04 | 深圳金信诺高新技术股份有限公司 | Signal receiving and transmitting device and wireless network equipment |
| CN115296691B (en) * | 2022-08-01 | 2024-01-02 | 深圳金信诺高新技术股份有限公司 | Signal receiving and transmitting device and wireless network equipment |
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| CN108173567B (en) | 2023-07-07 |
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