CN2563027Y - Car carried FM transmitting and receiving device - Google Patents
Car carried FM transmitting and receiving device Download PDFInfo
- Publication number
- CN2563027Y CN2563027Y CN 02266063 CN02266063U CN2563027Y CN 2563027 Y CN2563027 Y CN 2563027Y CN 02266063 CN02266063 CN 02266063 CN 02266063 U CN02266063 U CN 02266063U CN 2563027 Y CN2563027 Y CN 2563027Y
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- circuit
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- microphone
- switch
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Abstract
The utility model relates to a vehicle frequency modulation emission answering device which mainly comprises an outer casing, a battery, a switch and a microphone, wherein, the inside of the outer casing is provided with a circuit board and a built-in loop antenna consisting of the copper foils arranged on the circuit board; the back side of the outer casing is provided with a clamp; the lower end of the back side of the outer casing is provided with a microphone port, and the position of the microphone port is corresponding to the clamping end of the clamp; the circuit board is formed by the microphone, an audio frequency amplifying circuit, a frequency mixing modulation circuit, a frequency selective network, a high-frequency power amplifier and a radio transmitter which are connected in series in turn; high frequency signal source is provided by a high frequency oscillator; moreover, the battery is connected with the switch. The utility model has the advantages that: the device ensures that a car driver can realize hand-free operation of a mobile phone during driving; meanwhile, the device transmits the incoming call of the mobile phone to a vehicle frequency modulation radio set, and clear sound of the incoming call is directly emitted by the radio set; moreover, the utility model is characterized by simple structure and convenience for use.
Description
Technical field
The utility model relates to the emission of a kind of frequency modulation and answers device, and device is answered in particularly a kind of vehicle-mounted frequency modulation emission, mainly is applicable to answering of mobile phone in the automobile.
Background technology
Mobile phone use at present is more prevalent, and the automobile driver through regular meeting's answering cell phone, still can reduce the safety of driving on the run like this, and navigating mate answering cell phone, proficiency is on the other hand driven, and is not easy control vehicle and travels.Also have some mobile phones that hand-free function is arranged now or use earphone, but noise makes that to answer speech unintelligible in the car.
The utility model content
The purpose of this utility model is in order to solve the deficiency of above-mentioned technology, can make the automobile driver not have the manual manipulation mobile phone on the run and provide a kind of, the other side's calling in the mobile phone is transmitted in the vehicle-mounted FM receiver, directly sends the vehicle-mounted frequency modulation emission of clear calling sound through the radio receiver sound equipment and answer device.
In order to achieve the above object, device is answered in the vehicle-mounted frequency modulation emission that the utility model relates to, and mainly comprises shell, battery, switch and microphone, is provided with circuit card in the shell, loop antenna in the machine that is made of the Copper Foil on the circuit card; The shell back side is provided with clip, and the lower end at the shell back side is provided with the microphone mouth, and microphone mouth position is corresponding with the pinching end of clip.
The technical scheme that its technical matters that solves the utility model adopts can also be further perfect.Described circuit card is to be connected in series successively by microphone, audio amplifier circuit, mixed modulated circuit, frequency selection network, radio frequency power amplifier device and wireless launcher, and provides high-frequency signal source by high frequency generator; Battery links to each other with switch, and switch links to each other with microphone, audio amplifier circuit, mixed modulated circuit, frequency selection network, radio frequency power amplifier device and high frequency generator respectively, controls its on off state.Described audio amplifier circuit is by MIC, aerotron Q1, and resistance R 2, R3, R4, capacitor C 3, C4, C5 form, and R3, C5 are in parallel with Q1, and connect with R4, C4 respectively in two ends, and C4 connects with circuit parallel of being made up of C3 and MIC and R2; High frequency generator 4 is made up of resistance R 6, diode D1 and JT, and R6 is in parallel with D1, connects with JT again; The mixed modulated device is by resistance R 7, R9, capacitor C 9, C10, and aerotron Q2 forms, and C10 is in parallel with R9 and connected by the circuit parallel that C9, Q2 form, and connects with R7 again.Frequency selection network (6) is made up of electric capacity L3, C11, the two parallel connection; The radio frequency power amplifier device is made up of resistance R 10, capacitor C 13, inductance L 4, aerotron Q3, and C13 is in parallel with L4, and is with the Q3 series connection, in parallel with R10 more then.
Useful effect of the present utility model is: can make the automobile driver not have the manual manipulation mobile phone on the run, the other side's calling in the mobile phone is transmitted in the vehicle-mounted FM receiver, directly send clear calling sound through the radio receiver sound equipment, have characteristics simple in structure, easy to use.
Description of drawings
Fig. 1 is a main TV structure scheme drawing of the present utility model;
Fig. 2 is a right TV structure scheme drawing of the present utility model;
Fig. 3 is a functional block diagram of the present utility model;
Fig. 4 is schematic circuit diagram of the present utility model;
The specific embodiment
Below in conjunction with embodiment the utility model is further described.As Fig. 1, Fig. 2 and shown in Figure 3, device is answered in this vehicle-mounted frequency modulation emission, mainly comprises shell 1, battery 2, switch 5 and microphone 6, is provided with circuit card 4 in the shell 1, loop antenna 3 in the machine that is made of the Copper Foil on the circuit card 4; Shell 1 back side is provided with clip 7, and the lower end at shell 1 back side is provided with microphone mouth 8, and microphone mouth 8 positions are corresponding with the pinching end of clip 7.Described circuit card 4 is to be connected in series successively by microphone, audio amplifier circuit, mixed modulated circuit, frequency selection network, radio frequency power amplifier device and wireless launcher, and provides high-frequency signal source by high frequency generator; Battery 2 links to each other with switch 1, and switch 1 links to each other with microphone, audio amplifier circuit, mixed modulated circuit, frequency selection network, radio frequency power amplifier device and high frequency generator respectively, controls its on off state.
Concrete circuit, as shown in Figure 4, described audio amplifier circuit is by MIC, aerotron Q1, resistance R 2, R3, R4, capacitor C 3, C4, C5 form, R3, C5 are in parallel with Q1, connect with R4, C4 respectively in two ends, and C4 connects with circuit parallel of being made up of C3 and MIC and R2; High frequency generator 4 is made up of resistance R 6, diode D1 and JT, and R6 is in parallel with D1, connects with JT again; The mixed modulated device is by resistance R 7, R9, capacitor C 9, C10, and aerotron Q2 forms, and C10 is in parallel with R9 and connected by the circuit parallel that C9, Q2 form, and connects with R7 again.Frequency selection network is made up of electric capacity L3, C11, the two parallel connection; The radio frequency power amplifier device is made up of resistance R 10, capacitor C 13, inductance L 4, aerotron Q3, and C13 is in parallel with L4, and is with the Q3 series connection, in parallel with R10 more then.
Working process: microphone 6 usefulness clips 7 are clamped and are made on its transmitter that is close to mobile phone, the sound that the transmitter of mobile phone is sent converts electric signal to, via MIC, aerotron Q1, resistance R 2, R3, R4, capacitor C 3, C4, the audio amplifier circuit that C5 forms amplifies to be delivered to by resistance R 7, R9, capacitor C 9, C10, in the mixed modulated circuit that aerotron Q2 forms, with by resistance R 6, the high-frequency signal that the high frequency generator that diode D1 and JT form sends carries out mixed modulated, produce a high order harmonic ten public abundant frequencies, again via capacitor C 3, the frequency selection network that C11 forms is selected the harmonic components of a frequency in 88～108MHZ scope, delivers to wireless launcher through the radio frequency power amplifier device.
Claims (3)
1, device is answered in a kind of vehicle-mounted frequency modulation emission, mainly comprises shell (1), battery (2), switch (5) and microphone (6), it is characterized in that: be provided with circuit card (4) in the shell (1), by loop antenna (3) in the machine of the formation of the Copper Foil on the circuit card (4); Shell (1) back side is provided with clip (7), and the lower end at shell (1) back side is provided with microphone mouth (8), and microphone mouth (8) position is corresponding with the pinching end of clip (7).
2, device is answered in vehicle-mounted frequency modulation emission according to claim 1, it is characterized in that: described circuit card (4) is to be connected in series successively by microphone, audio amplifier circuit, mixed modulated circuit, frequency selection network, radio frequency power amplifier device and wireless launcher, and provides high-frequency signal source by high frequency generator; Battery (2) links to each other with switch (1), and switch (1) links to each other with microphone, audio amplifier circuit, mixed modulated circuit, frequency selection network, radio frequency power amplifier device and high frequency generator respectively, controls its on off state.
3, device is answered in vehicle-mounted frequency modulation emission according to claim 1 and 2, it is characterized in that: described audio amplifier circuit is by MIC, aerotron Q1, resistance R 2, R3, R4, capacitor C 3, C4, C5 form, R3, C5 are in parallel with Q1, connect with R4, C4 respectively in two ends, and C4 connects with circuit parallel of being made up of C3 and MIC and R2; High frequency generator 4 is made up of resistance R 6, diode D1 and JT, and R6 is in parallel with D1, connects with JT again; The mixed modulated device is by resistance R 7, R9, capacitor C 9, C10, and aerotron Q2 forms, and C10 is in parallel with R9 and connected by the circuit parallel that C9, Q2 form, and connects with R7 again.Frequency selection network is made up of electric capacity L3, C11, the two parallel connection; The radio frequency power amplifier device is made up of resistance R 10, capacitor C 13, inductance L 4, aerotron Q3, and C13 is in parallel with L4, and is with the Q3 series connection, in parallel with R10 more then.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02266063 CN2563027Y (en) | 2002-08-06 | 2002-08-06 | Car carried FM transmitting and receiving device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02266063 CN2563027Y (en) | 2002-08-06 | 2002-08-06 | Car carried FM transmitting and receiving device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2563027Y true CN2563027Y (en) | 2003-07-30 |
Family
ID=33731972
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02266063 Expired - Fee Related CN2563027Y (en) | 2002-08-06 | 2002-08-06 | Car carried FM transmitting and receiving device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2563027Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009062393A1 (en) * | 2007-10-31 | 2009-05-22 | Yuhua Wang | Combining device including fm transmitter and wireless earphone |
-
2002
- 2002-08-06 CN CN 02266063 patent/CN2563027Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009062393A1 (en) * | 2007-10-31 | 2009-05-22 | Yuhua Wang | Combining device including fm transmitter and wireless earphone |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |