CN206313979U - A kind of FM reception circuit and light fixture - Google Patents
A kind of FM reception circuit and light fixture Download PDFInfo
- Publication number
- CN206313979U CN206313979U CN201621362059.6U CN201621362059U CN206313979U CN 206313979 U CN206313979 U CN 206313979U CN 201621362059 U CN201621362059 U CN 201621362059U CN 206313979 U CN206313979 U CN 206313979U
- Authority
- CN
- China
- Prior art keywords
- reception
- electrically connected
- amplifier
- microprocessor
- light fixture
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Abstract
The utility model discloses a kind of FM reception circuit and light fixture, FM reception circuit includes：FM reception antenna for receiving FM signal；FM reception chip, is electrically connected at FM reception antenna；Microprocessor is received, FM reception chip is electrically connected at；The receives frequency code switch of frequency is received for adjusting, reception microprocessor is electrically connected at；Amplifier, is electrically connected at FM reception chip；Loudspeaker, are electrically connected at amplifier.It is, by setting different frequent points with the audio signal outside FM reception, to not only increase the antijamming capability of telecontrol engineering to implement the beneficial effects of the utility model, also improves the reliability of smart home communication；By setting the music networking function between multiple loudspeaker nodes or the multiple nodes of light fixture realization or light fixture, the adventure in daily life of people is improved, enrich Intelligent housing function.
Description
Technical field
The utility model is related to frequency-modulated communication techniques field, more particularly to a kind of FM reception circuit and light fixture.
Background technology
With the popularization of music light source technology, increasing music light source gets their way into people's lives.Pass through at present
The technology of Intelligent household remote control music light source is more ripe, but this telecontrol engineering antijamming capability is weak, networking inconvenience, reliable
Property is general.And in the prior art, it is difficult to the networking function between multiple music light sources is realized, more lamp is realized not over frequency modulation
Has the technical scheme of music networking.
Utility model content
The purpose of this utility model is to provide a kind of FM reception circuit and light fixture, solves telecontrol engineering in the prior art
Antijamming capability is weak, networking inconvenience, and reliability is general, and is difficult to the networking function between multiple music light sources, does not have
The problem of the technical scheme of light fixture music networking is realized by frequency modulation.
The technical solution of the utility model is realized as follows：
On the one hand, the utility model provides a kind of FM reception circuit, including：
FM reception antenna for receiving FM signal；
FM reception chip, is electrically connected at the FM reception antenna；
Microprocessor is received, the FM reception chip is electrically connected at；
The receives frequency code switch of frequency is received for adjusting, the reception microprocessor is electrically connected at；
Amplifier, is electrically connected at the FM reception chip；
Loudspeaker, are electrically connected at the amplifier.
In FM reception circuit described in the utility model, also include：
Electric supply installation, is electrically connected at the amplifier, the FM reception chip and the reception microprocessor.
In FM reception circuit described in the utility model, the electric supply installation includes：
Power supply circuit for providing first voltage, is electrically connected at the amplifier；
For accessing the first voltage to export the mu balanced circuit of second voltage, its input is connected to the power supply electricity
Road, its output end is electrically connected at the FM reception chip and the reception microprocessor.
In FM reception circuit described in the utility model, the receives frequency code switch is parallel with one another including three
Sub switch, to switch the reception frequency of the FM reception antenna.
In FM reception circuit described in the utility model, also include：
Reception LED for showing FM signal reception state, is electrically connected at the reception microprocessor.
In FM reception circuit described in the utility model, the amplifier is class ab ammplifier.
, there is provided a kind of light fixture, including FM reception circuit as described above on the one hand.
Therefore, the beneficial effects of the utility model are, by setting different frequent points with the audio signal outside FM reception,
The antijamming capability of telecontrol engineering is not only increased, the reliability of smart home communication is also improved；By setting multiple loudspeaker
Node or light fixture realize the music networking function between multiple nodes or light fixture, improve the adventure in daily life of people, enrich intelligence
Can home control function.
Brief description of the drawings
Below in conjunction with drawings and Examples, the utility model is described in further detail, in accompanying drawing：
A kind of module frame chart of FM reception circuit that Fig. 1 is provided for the utility model；
FM reception antenna that Fig. 2 is provided for the embodiment of the utility model one, FM reception chip, receive microprocessor and
The structural representation of receives frequency code switch；
The structural representation of amplifier, loudspeaker and electric supply installation that Fig. 3 is provided for the embodiment of the utility model one.
Specific embodiment
In order to be more clearly understood to technical characteristic of the present utility model, purpose and effect, accompanying drawing will be below compareed
Describe specific embodiment of the present utility model in detail.It should be appreciated that following explanation is only the specific of the utility model embodiment
Illustrate, protection domain of the present utility model should not be limited with this.
The utility model provides a kind of FM reception circuit 100, light fixture and its audio frequency playing method, it is intended that logical
The audio signal crossed outside frequency modulation communications reception, the antijamming capability of telecontrol engineering is improved by setting different frequent points, is improve
The reliability of smart home communication, by setting the sound between multiple nodes of loudspeaker 6 or the multiple nodes of light fixture realization or light fixture
Happy networking function, improves the adventure in daily life of people, enriches Intelligent housing function.
Referring to Fig. 1, a kind of module frame chart of FM reception circuit 100 that Fig. 1 is provided for the utility model, the FM reception
Circuit 100 includes FM reception antenna 1, FM reception chip 2, receives microprocessor 3, receives frequency code switch 4, amplifier
5 and loudspeaker 6.
FM reception antenna 1 is used to receive FM signal, and the tuning range that it is received is 88MHz-110MHz.
FM reception chip 2 is electrically connected at the FM reception antenna 1；Referring to Fig. 2, Fig. 2 is real the utility model one
The structure of FM reception antenna 1, FM reception chip 2, reception microprocessor 3 and the receives frequency code switch 4 of example offer is provided
Schematic diagram, FM reception chip 2 is the U2 in Fig. 2, and its port FMIN is connected to one end of electric capacity C25, the other end of electric capacity C25
It is connected to one end of one end, one end of inductance L5 and electric capacity C11 of electric capacity C10, the other end of electric capacity C10 and inductance L5's is another
One end is grounded, and the other end of electric capacity C11 is connected to one end of inductance L4, and the other end of inductance L4 is connected to FM reception antenna 1.
Receive microprocessor 3 and be electrically connected at the FM reception chip 2；It is the MCU2 in Fig. 2 to receive microprocessor 3,
Its port 5 is connected to the port SDA of U2, and port 6 is connected to the port SCLK of U2.
The receives frequency code switch 4 of frequency is received for adjusting, the reception microprocessor 3 is electrically connected at；Receive
Frequency coding switch 4 includes three sub switchs parallel with one another, to switch the reception frequency of the FM reception antenna 1.This three
Individual sub switch is respectively sub switch A, sub switch B and sub switch C, and one end of sub switch A, sub switch B and sub switch C are grounded,
The other end of sub switch A is connected to the port 3 of MCU2 by resistance R17, and the other end of sub switch B is connected to by resistance R14
The port 4 of MCU2, the other end of sub switch C is connected to the port 7 of MCU2 by resistance R21.
Amplifier 5 is electrically connected at the FM reception chip 2；The amplifier 5 is class ab ammplifier 5, and AB classes are amplified
Device 5 is to rely on the combination device of the size of bias current and the A classes of output level and class-b amplifier 5, class ab ammplifier 5
Biasing is between class-a amplifier 5 and class-b amplifier 5.The efficiency far of AB classes more than class-a amplifier 5, put by slightly below B classes
Big device 5.The biasing of class ab ammplifier 5 can cover the operation interval mutual for working in two transistors of symmetrical operation mode
Lid.Simultaneously because class ab ammplifier does not disturb FM to receive frequency range, this equipment is highly suitable for.Referring to Fig. 3, Fig. 3 is this practicality
The structural representation of amplifier 5, loudspeaker 6 and electric supply installation 7 that a new embodiment is provided, amplifier 5 is the U3 in Fig. 3, its
Port 4 passes sequentially through resistance R36, electric capacity C32, inductance L7, resistance R34 and electric capacity C28 and is connected to interface 101, such as Fig. 2, interface
The 101 port ROUT that U2 is connected to by resistance R33.The port 3 of U3 is connected to one end of resistance R20, the other end of resistance R20
It is connected to one end of electric capacity C30 and is connected between inductance L7 and resistance R34, the other end of electric capacity C30 is connected to electric capacity C29's
One end is simultaneously connected between resistance R34 and electric capacity C28, and the other end of electric capacity C29 is connected to interface 102, such as Fig. 2, and interface 102 leads to
Cross the port LOUT that resistance R31 is connected to U2.The port 2 of U3 is connected to one end of electric capacity C34, and the other end of C34 is connected to electricity
One end of R20 and one end of resistance R18 are hindered, the other end of resistance R18 is connected to electric capacity C13, and the other end of electric capacity C13 is connected to
Between inductance L7 and resistance R34.
Loudspeaker 6 are electrically connected at the amplifier 5.One end of loudspeaker 6 be connected to electric capacity C15 one end and inductance L2 one
End, the other end of loudspeaker 6 is connected to one end of electric capacity C16 and one end of inductance L3, and the other end of inductance L2 is connected to the end of U3
Mouth 5, the other end of inductance L3 is connected to the port 8 of U3.
Preferably, referring to Fig. 3, the FM reception circuit 100 also includes electric supply installation 7, is electrically connected at the amplifier
5th, the FM reception chip 2 and the reception microprocessor 3.The electric supply installation 7 includes power supply circuit 71 and mu balanced circuit
72。
Power supply circuit 71 is used to provide first voltage, is electrically connected at the port 6 of the amplifier 5；The first voltage is excellent
Elect+3.6-8V as.
For the mu balanced circuit 72 for accessing the first voltage to export second voltage, its input is connected to the power supply
Circuit 71, its output end is electrically connected at the FM reception chip 2 and the reception microprocessor 3.Second voltage is preferably
3.3V, second voltage is linked into the port 1 of MCU2 and the port VDD of U2.
Preferably, referring to Fig. 2, the FM reception circuit 100 also includes receiving LED RX-LED, receives LED RX-LED
Reception LED for showing FM signal reception state, is electrically connected at the reception microprocessor 3.Receive LED RX-
The positive pole of LED is connected to the port 2 of MCU2 by resistance R16.
Preferably, the FM reception circuit 100 can be applied in light fixture, such as Down lamp, included by will install multiple
The Down lamp of the FM reception circuit 100 realizes the effect of indoor surround sound in the diverse location of same indoor ceiling.And adjust
The audio input of the emitter that takes place frequently has 2 tunnels：Wired input and it is wirelessly input to, wired input, can be by by the AUX interfaces on transmitter
The audio signal of television set, CD-ROM device or other equipment is accessed；It is wirelessly input to by bluetooth connection mode, can be by Bluetooth pairing
The audio signal that mobile phone is played is launched, for multiple receiving unit playbacks, so as to realize the interaction of light and music.And frequency modulation
Transmitter may be mounted at the indoor place close to audio, such as by television set, by setting frequency-modulated transmitter, by television set
Sound is sent to multiple receiving units by the frequency-modulated transmitter, and multiple receiving units can be by the FM reception circuit 100
While sounding.
On the one hand, there is provided a kind of audio frequency playing method of light fixture, there is provided light fixture as described above, including step S1-S5：
S1, by it is described reception microprocessor 3 and the receives frequency code switch 4 control the FM reception antenna 1
Reception frequency；Step S1 includes sub-step S11-S12：
S11, three states of sub switch that the receives frequency code switch 4 is obtained by the reception microprocessor 3；
Referring to Fig. 2, three sub switchs are respectively sub switch A, sub switch B and sub switch C, and signal 1 is produced during switch closure, are produced during disconnection
Raw signal 0, therefore three sub switchs can realize eight kinds of different signals, such as following table by switch combination：
| f1 | f2 | f3 | f4 | f5 | f6 | f7 | f8 | |
| A | 0 | 0 | 0 | 0 | 1 | 1 | 1 | 1 |
| B | 0 | 0 | 1 | 1 | 0 | 0 | 1 | 1 |
| C | 0 | 1 | 0 | 1 | 0 | 1 | 0 | 1 |
By three various combinations of sub switch, 8 kinds of different frequencies are can correspond to.
S12, the state of three sub switchs of foundation determine the reception frequency.For example, f1 is 88MHz, as sub switch A
Disconnect, sub switch B disconnects, when sub switch C is closed, the working frequency points of FM reception antenna 1 are the 88MHz of f1, by that analogy.
S2, by the FM reception antenna 1 according to it is described reception frequency receive outside FM signal；For example, current
When the working frequency points of FM reception antenna 1 are the 88MHz of f1, the FM signal of outside 88MHz frequencies is received.
S3, the FM signal is converted to by audio signal by the FM reception chip 2.
S4, amplified by 5 pairs, the amplifier audio signals.
S5, play amplified audio signal by the loudspeaker 6.
Preferably, the audio frequency playing method also includes step S6-S7：
S6, by first voltage for the amplifier 5 is powered.First voltage is preferably+3.6-8V.
S7, by second voltage be the FM reception chip 2 and it is described reception microprocessor 3 power.Second voltage is excellent
Elect+3.3V as.Because light fixture just has power taking wiring in itself, therefore without adding external electric wire in addition, only need to be by power supply electricity
Road 71 is connected to light fixture supply lines in itself.Light fixture own resources rationally are make use of, cost has been saved.
There is provided herein the various operations of embodiment.In one embodiment, described one or operation may be constructed one
The computer-readable instruction stored on individual or computer-readable medium, it will be so that computing device be held when being performed by electronic equipment
The row operation.Describing the order of some or all of operations, to should not be construed as to imply that these operations necessarily order dependent
's.It will be appreciated by those skilled in the art that the alternative sequence of the benefit with this specification.Furthermore, it is to be understood that not being institute
Having operation must exist in each embodiment provided in this article.
And, word " preferred " used herein means serving as example, example or illustration.Feng Wen is described as " preferably
" any aspect or design be not necessarily to be construed as than other aspect or design it is more favourable.Conversely, the use purport of word " preferred "
Concept is being proposed in a concrete fashion.Term "or" as used in this application is intended to mean the "or" for including and non-excluded
"or".I.e., unless otherwise or clear from the context, " X uses A or B " means that nature includes any one of arrangement.
That is, if X uses A；X uses B；Or X uses A and B both, then " X uses A or B " is met in foregoing any example.
And, although the disclosure, people in the art has shown and described relative to one or implementation
Member will appreciate that equivalent variations and modification based on the reading and understanding to the specification and drawings.The disclosure includes all such
Modification and modification, and be limited only by the scope of the following claims.Particularly with by said modules (such as element, resource
Deng) various functions that perform, the term for describing such component is intended to correspond to the specified function (example for performing the component
Functionally of equal value such as it) random component (unless otherwise instructed), even if in structure with perform shown in this article
The open structure of the function in disclosed exemplary implementations is not equivalent.Although additionally, the special characteristic of the disclosure phase
It is disclosed for the only one in some implementations, but this feature can be for given or application-specific with such as
It is to expect one or other combinations of features with other favourable implementations.And, with regard to term " including ", " having ", " contain
Have " or its deformation be used in specific embodiment or claim for, such term be intended to with term " include " phase
As mode include.
Each functional unit in the utility model embodiment can be integrated in a processing module, or each list
Unit is individually physically present, it is also possible to which two or more units are integrated in a module.Above-mentioned integrated module both can be with
Realized in the form of hardware, it would however also be possible to employ the form of software function module is realized.If the integrated module is with software
The form of functional module is realized and as independent production marketing or when using, it is also possible to which storage is deposited in an embodied on computer readable
In storage media.Storage medium mentioned above can be read-only storage, disk or CD etc..Above-mentioned each device or system,
The method in correlation method embodiment can be performed.
In sum, although the utility model is disclosed above with preferred embodiment, but above preferred embodiment is not used
To limit the utility model, one of ordinary skill in the art is not departing from spirit and scope of the present utility model, can make
Various changes are defined with retouching, therefore protection domain of the present utility model by the scope that claim is defined.
Claims (7)
1. a kind of FM reception circuit, it is characterised in that including：
FM reception antenna for receiving FM signal；
FM reception chip, is electrically connected at the FM reception antenna；
Microprocessor is received, the FM reception chip is electrically connected at；
The receives frequency code switch of frequency is received for adjusting, the reception microprocessor is electrically connected at；
Amplifier, is electrically connected at the FM reception chip；
Loudspeaker, are electrically connected at the amplifier.
2. FM reception circuit according to claim 1, it is characterised in that also include：
Electric supply installation, is electrically connected at the amplifier, the FM reception chip and the reception microprocessor.
3. FM reception circuit according to claim 2, it is characterised in that the electric supply installation includes：
Power supply circuit for providing first voltage, is electrically connected at the amplifier；
For accessing the first voltage to export the mu balanced circuit of second voltage, its input is connected to the power supply circuit,
Its output end is electrically connected at the FM reception chip and the reception microprocessor.
4. FM reception circuit according to claim 1, it is characterised in that the receives frequency code switch includes three
Sub switch parallel with one another, to switch the reception frequency of the FM reception antenna.
5. FM reception circuit according to claim 1, it is characterised in that also include：
Reception LED for showing FM signal reception state, is electrically connected at the reception microprocessor.
6. FM reception circuit according to claim 1, it is characterised in that the amplifier is class ab ammplifier.
7. a kind of light fixture, it is characterised in that including the FM reception circuit as described in claim any one of 1-6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621362059.6U CN206313979U (en) | 2016-12-12 | 2016-12-12 | A kind of FM reception circuit and light fixture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621362059.6U CN206313979U (en) | 2016-12-12 | 2016-12-12 | A kind of FM reception circuit and light fixture |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206313979U true CN206313979U (en) | 2017-07-07 |
Family
ID=59252055
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621362059.6U Expired - Fee Related CN206313979U (en) | 2016-12-12 | 2016-12-12 | A kind of FM reception circuit and light fixture |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206313979U (en) |
-
2016
- 2016-12-12 CN CN201621362059.6U patent/CN206313979U/en not_active Expired - Fee Related
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103501558A (en) | LED lighting device, wireless speaker system and wireless audio playing method | |
| CN204090123U (en) | Audio output control circuit and audio-frequence player device | |
| CN105848028A (en) | Earphone for charging audio device and method for charging audio device | |
| CN203537555U (en) | Audio device | |
| CN103929695B (en) | Household mosaic Bluetooth music play system and player method | |
| CN107872233A (en) | A kind of modulating emission circuit and FM transmission method | |
| CN106507241A (en) | Method for determining the order of connection of the node on power-up audio-frequency bus | |
| CN203788427U (en) | Remote control audio system | |
| CN103152670A (en) | Audio frequency processing circuit and earphone | |
| CN206313758U (en) | A kind of modulating emission circuit | |
| CN206313979U (en) | A kind of FM reception circuit and light fixture | |
| CN105355223A (en) | Novel wireless audio playback system and initialization method therefor | |
| CN107872753A (en) | A kind of FM reception circuit, light fixture and its audio frequency playing method | |
| CN204992154U (en) | Smart jack and system with wireless interactive function | |
| CN206075529U (en) | Infrared universal remote control | |
| CN203734823U (en) | Audio device | |
| CN204615858U (en) | Based on the music share system of WiFi technology | |
| CN204669589U (en) | A kind of Multi-audio-frequency passage bridge control circuit and audio frequency apparatus | |
| CN202721728U (en) | Mobile phone and audio amplification output circuit thereof | |
| CN203399276U (en) | Audio frequency power amplification device | |
| CN205899493U (en) | Low -power consumption public service intelligent terminal machine | |
| CN204291283U (en) | Log sound equipment | |
| CN206893292U (en) | Smart home embedded Bluetooth background music player | |
| CN205249255U (en) | Control all -in -one among digital network of built -in switch | |
| CN204650995U (en) | A kind of home entertaining all-in-one |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170707 Termination date: 20211212 |