CN105430619A - Power broadcasting system facilitating information notification - Google Patents
Power broadcasting system facilitating information notification Download PDFInfo
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- CN105430619A CN105430619A CN201510708884.0A CN201510708884A CN105430619A CN 105430619 A CN105430619 A CN 105430619A CN 201510708884 A CN201510708884 A CN 201510708884A CN 105430619 A CN105430619 A CN 105430619A
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- power
- broadcast
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- 230000005540 biological transmission Effects 0.000 claims description 11
- 230000005236 sound signal Effects 0.000 claims description 8
- 238000000034 method Methods 0.000 claims description 7
- 230000010355 oscillation Effects 0.000 claims description 6
- 239000000203 mixture Substances 0.000 claims description 4
- 230000003321 amplification Effects 0.000 claims description 3
- 239000000919 ceramic Substances 0.000 claims description 3
- 239000013078 crystal Substances 0.000 claims description 3
- 230000005284 excitation Effects 0.000 claims description 3
- 238000001914 filtration Methods 0.000 claims description 3
- 238000003199 nucleic acid amplification method Methods 0.000 claims description 3
- 238000004891 communication Methods 0.000 description 10
- 230000005611 electricity Effects 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- 230000000739 chaotic effect Effects 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04H—BROADCAST COMMUNICATION
- H04H20/00—Arrangements for broadcast or for distribution combined with broadcast
- H04H20/53—Arrangements specially adapted for specific applications, e.g. for traffic information or for mobile receivers
- H04H20/59—Arrangements specially adapted for specific applications, e.g. for traffic information or for mobile receivers for emergency or urgency
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04H—BROADCAST COMMUNICATION
- H04H20/00—Arrangements for broadcast or for distribution combined with broadcast
- H04H20/65—Arrangements characterised by transmission systems for broadcast
- H04H20/71—Wireless systems
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/06—Selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS]; Services to user groups; One-way selective calling services
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Multimedia (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
The invention discloses a power broadcasting system facilitating information notification. The system comprises clients and a control terminal, the control terminal is a broadcasting relay with an emission antenna, the reception clients are cellphones with the function of specific channel reception, the broadcasting relay sends modulation signals via a modulation circuit, and the signals are amplified and adjusted at receiving terminals of the cellphones and are modulated via a voltage-controlled oscillator. Low frequency signals obtained after frequency discrimination are received, a part of the signals are amplified, and filtered and shaped via a band-pass filter with a continuous tone controlled squelch system and then enters a CPU, compared with a preset channel value, and an audio power amplifier and the loudspeaker are controlled to output a result. If the result and the preset channel value are the same, the loudspeaker is turned on; and if the result and the preset channel value are different, the loudspeaker is turned off. By employing the technical scheme, the cellphones can receive the specific channel signals of a local base station and automatically turn on loudspeakers for playing, and the missing of information notification due to accidental conditions such as poor signals of the public base station or mute is prevented.
Description
Technical field
The invention belongs to power system communication field, relate to a kind of broadcast system.
Background technology
Electric power is the energy using electric energy as power.Invent in 19 century 70s, the invention of electric power and application have started second time industrialization climax.Since becoming 18th century of human history, one of three scientific and technological revolutions that the world occurs, from then on science and technology changes the life of people.The large-scale electrical power system that 20th century occurred is one of most important achievement in the human engineering history of science, the electrical production be made up of links such as generating, transmission of electricity, power transformation, distribution and electricity consumptions and consume system.Natural primary energy is changed into electric power by mechanical energy device by it, then supplies power to each user through transmission of electricity, power transformation and distribution.
Be the epoch of the Internet now, we still have the demand of sustainable growth to electric power, because we have invented the product of more use electric power such as computer, household electrical appliances.Constantly the occurring of undeniable new technology makes electric power become the necessity of people.
Power equipment and circuit have a variety of causes to need to be serviced and check, due to the restriction of technology, can not accomplish online O&M completely, therefore must have a power failure in some moment.Generally having a power failure to not cause large area to concentrate, is generally after the power failure process of region, then another region that has a power failure.Large-area power failure can be avoided like this to affect.
Therefore power off notifying in advance can be carried out before certain region has a power failure.One's respective area electricity consumption resident is made to have a preparation, in order to avoid temporary interruption causes various loss.
Broadcast systems all is at present all adopt special line, or wireless signal transmits broadcast singal.Wherein, adopt special line to carry out transmission and there is the problems such as investment is comparatively large, line upkeep is difficult, strongly professional.And adopting that wireless to carry out transmitting its principle as follows: broadcasting station broadcast items first sound is converted to audio electrical signal by microphone, modulated by high-frequency signal (carrier wave) after amplifying, at this moment a certain parameter of high-frequency carrier signal is along with the corresponding change of audio signal do, the audio signal making us transmit is included within high-frequency carrier signal, high-frequency signal is large through putting 8 again, then when high-frequency current flows through antenna, form radio wave outwards to launch, velocity of radio wave is 3 × 10m/s, this radio wave is received by radio antenna, then through amplifying, demodulation, be reduced to audio electrical signal, send in speaker voice coil, play cone to vibrate accordingly, just original sound can be gone back, namely be that acoustic-electric conversion transmits---the process of electroacoustic conversion.Although adopt wireless transmission method to greatly reduce transmission cost, signal source can not be guaranteed, and is easily interfered in transmitting procedure.In view of this, prior art has yet to be improved and developed.Application number: 201310229685.2; The applying date: 2013-06-09, title: a kind of system by power line transmission broadcast singal, a kind of broadcast system is disclosed, the invention discloses a kind of system by power line transmission broadcast singal, wherein, described system comprises: power line modem, coupling transformer and control device; Wherein, described control device connects described power line modem, and described power line modem connects described power line by described coupling transformer.Carry out broadcast singal transmission owing to have employed power line, its versatility is good, easy to use, and installation and maintenance are simple, utilize existing platform to transform, economical, laborsaving; As long as the place of energising, just can cover broadcast singal, have good marketing application prospect.
In actual job site, multiple communication equipment or the communication modes such as intercom, mobile phone, landline telephone be usually equipped with, existing emergency communication system, the communication connection of the communication mode of single kind can only be realized, between different types of communication mode, cannot establish a communications link, thus have impact on the efficient communication under the emergency rating of transformer station, bring very large inconvenience to emergency.
Long at some region interruption duration, or because the power supply failed suddenly because of emergency.If inform resident not in time, will draw that it is panic and chaotic, it is very many to address inquires to phone, adds various added burden.
Need to provide the power information reporting system under a kind of analogue thus.
Summary of the invention
The invention provides a kind of electric power broadcast being convenient to message notice, comprise client and control terminal, control terminal is the broadcast relay with transmitting antenna, client is the mobile phone accepting function with specific channel, wherein, 1, broadcast relay is radiating portion: the power information for broadcast produces through phase-locked loop and voltage controlled oscillator (VCO) radio-frequency carrier signal launched, through Hyblid Buffer Amplifier, excitation is amplified, power amplifier, produce specified radio-frequency power, through antenna low pass filter, harmonic inhabitation composition, is then gone out by antenna transmission.
2, receiving unit is the mobile phone having special frequency channel concurrently:
Amplifying signal from radio frequency and the first local oscillation signal from phase-locked loop frequency synthesizer circuit are generated the first intermediate-freuqncy signal in the first frequency mixer place mixing by receiving unit.First intermediate-freuqncy signal eliminates the noise signal of neighboring trace further by crystal filter.Filtered first intermediate-freuqncy signal enters intermediate frequency process chip, with the second local oscillation signal again mixing generate the second intermediate-freuqncy signal, the second intermediate-freuqncy signal, by after a useless spurious signal of ceramic filter filtering, is exaggerated and frequency discrimination, produces audio signal.Audio signal by amplifications, band pass filter, the circuit such as postemphasis, and enters volume control circuit and power amplifier amplifies, driving loud speaker, obtains the information needed for people.
In order to increase flexibility, having voice and play-overing function, broadcast relay increases modulation signal and modulation circuit, and the speech of people converts the signal of telecommunication of audio frequency to by microphone.And by modulation circuit, modulation signal is sent.
At receiving terminal, signal, through amplifying adjustment, enters voltage controlled oscillator and modulates.Receive the low frequency signal obtained after frequency discrimination, a part, through to amplify and infrasonic band pass filter carries out filter shape, enters CPU, compares with channel predetermined value, by the output of its output control audio frequency power amplifier and loud speaker.If namely identical with preset channel predetermined value, then open loud speaker, if different, then mute speaker.
Adopt technical scheme of the present invention, mobile phone can accept the specific channel signals of home base stations, and automatically opens loud speaker and play, prevent public base station poor signal or and the fortuitous event such as quiet, unanimously miss announcement information.
Accompanying drawing illustrates:
Fig. 1 is the system composition schematic diagram of invention.
Specific embodiment
The invention provides a kind of electric power broadcast being convenient to message notice, comprise client and control terminal, control terminal is the broadcast relay with transmitting antenna, client is the mobile phone accepting function with specific channel, wherein, 1, broadcast relay is radiating portion: the power information for broadcast produces through phase-locked loop and voltage controlled oscillator (VCO) radio-frequency carrier signal launched, through Hyblid Buffer Amplifier, excitation is amplified, power amplifier, produce specified radio-frequency power, through antenna low pass filter, harmonic inhabitation composition, is then gone out by antenna transmission.
2, receiving unit is the mobile phone having special frequency channel concurrently:
Amplifying signal from radio frequency and the first local oscillation signal from phase-locked loop frequency synthesizer circuit are generated the first intermediate-freuqncy signal in the first frequency mixer place mixing by receiving unit.First intermediate-freuqncy signal eliminates the noise signal of neighboring trace further by crystal filter.Filtered first intermediate-freuqncy signal enters intermediate frequency process chip, with the second local oscillation signal again mixing generate the second intermediate-freuqncy signal, the second intermediate-freuqncy signal, by after a useless spurious signal of ceramic filter filtering, is exaggerated and frequency discrimination, produces audio signal.Audio signal by amplifications, band pass filter, the circuit such as postemphasis, and enters volume control circuit and power amplifier amplifies, driving loud speaker, obtains the information needed for people.
In order to increase flexibility, having voice and play-overing function, broadcast relay increases modulation signal and modulation circuit, and the speech of people converts the signal of telecommunication of audio frequency to by microphone.And by modulation circuit, modulation signal is sent.
At receiving terminal, signal, through amplifying adjustment, enters voltage controlled oscillator and modulates.Receive the low frequency signal obtained after frequency discrimination, a part, through to amplify and infrasonic band pass filter carries out filter shape, enters CPU, compares with channel predetermined value, by the output of its output control audio frequency power amplifier and loud speaker.If namely identical with preset channel predetermined value, then open loud speaker, if different, then mute speaker.
By providing multiple communication modes, ensure that power information can arrive electricity consumption resident in time.Reduce the impact of each factors such as power failure.
Claims (5)
1. be convenient to the electric power broadcast system of message notice for one kind, it is characterized in that: comprise client and control terminal, control terminal is the broadcast relay with transmitting antenna, client is the mobile phone accepting function with specific channel, wherein, 1, broadcast relay is radiating portion: the power information for broadcast produces through phase-locked loop and voltage controlled oscillator (VCO) radio-frequency carrier signal launched, through Hyblid Buffer Amplifier, excitation is amplified, power amplifier, produce specified radio-frequency power, through antenna low pass filter, harmonic inhabitation composition, is then gone out by antenna transmission.
2. the electric power broadcast system being convenient to message notice according to claim 1, is characterized in that: receiving unit is have the mobile phone receiving special frequency channel concurrently:
3. the electric power broadcast system being convenient to message notice according to claim 2, is characterized in that: at mobile phone receiving terminal, and signal, through amplifying adjustment, enters voltage controlled oscillator and modulates.Receive the low frequency signal obtained after frequency discrimination, a part, through to amplify and infrasonic band pass filter carries out filter shape, enters CPU, compares with channel predetermined value, by the output of its output control audio frequency power amplifier and loud speaker; If namely identical with preset channel predetermined value, then open loud speaker, if different, then mute speaker.
4. the electric power broadcast system being convenient to message notice according to claim 2, it is characterized in that: described broadcast system has voice and play-overs function, broadcast relay increases modulation signal and modulation circuit, and the speech of people converts the signal of telecommunication of audio frequency to by microphone.And by modulation circuit, modulation signal is sent.
5. the electric power broadcast system being convenient to message notice according to claim 2, it is characterized in that: the amplifying signal from radio frequency and the first local oscillation signal from phase-locked loop frequency synthesizer circuit are generated the first intermediate-freuqncy signal in the first frequency mixer place mixing by receiving unit, and the first intermediate-freuqncy signal eliminates the noise signal of neighboring trace further by crystal filter; Filtered first intermediate-freuqncy signal enters intermediate frequency process chip, with the second local oscillation signal again mixing generate the second intermediate-freuqncy signal, the second intermediate-freuqncy signal, by after a useless spurious signal of ceramic filter filtering, is exaggerated and frequency discrimination, produces audio signal; Audio signal by amplifications, band pass filter, the circuit such as postemphasis, and enters volume control circuit and power amplifier amplifies, driving loud speaker.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510708884.0A CN105430619A (en) | 2015-10-28 | 2015-10-28 | Power broadcasting system facilitating information notification |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510708884.0A CN105430619A (en) | 2015-10-28 | 2015-10-28 | Power broadcasting system facilitating information notification |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105430619A true CN105430619A (en) | 2016-03-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510708884.0A Pending CN105430619A (en) | 2015-10-28 | 2015-10-28 | Power broadcasting system facilitating information notification |
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| Country | Link |
|---|---|
| CN (1) | CN105430619A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106817778A (en) * | 2016-12-09 | 2017-06-09 | 国网北京市电力公司 | Communication means, device and system for dispatch command |
-
2015
- 2015-10-28 CN CN201510708884.0A patent/CN105430619A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106817778A (en) * | 2016-12-09 | 2017-06-09 | 国网北京市电力公司 | Communication means, device and system for dispatch command |
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| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160323 |
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| WD01 | Invention patent application deemed withdrawn after publication |