CN206490688U - Gather the modulator of the mobile terminal of geologic data - Google Patents
Gather the modulator of the mobile terminal of geologic data Download PDFInfo
- Publication number
- CN206490688U CN206490688U CN201720231239.9U CN201720231239U CN206490688U CN 206490688 U CN206490688 U CN 206490688U CN 201720231239 U CN201720231239 U CN 201720231239U CN 206490688 U CN206490688 U CN 206490688U
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- China
- Prior art keywords
- modulator
- signal
- frequency
- amplitude
- resistor
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Abstract
The utility model discloses the modulator of the mobile terminal of collection geologic data, including local oscillator module, frequency multiplier, amplitude modulator, frequency mixer, power amplifier and low frequency signal input module, local oscillator module, frequency multiplier, amplitude modulator, frequency mixer and power amplifier are sequentially connected；Local oscillator module is used to produce carrier signal；Frequency multiplier is used to receive the carrier signal sent from local oscillator module；Amplitude modulator is used to low frequency signal being modulated on carrier wave to produce amplitude-modulated signal；It is another value by a magnitude transform that frequency mixer, which is used for high-frequency signal,；Power amplifier is used for the power amplification of signal to required transmission power；Low frequency signal input module inputs low frequency signal and modulated for amplitude modulator.The utility model can be finely adjusted processing to the amplitude of signal, the amplitude of output signal is met required standard so that signal is more stablized when uploading data, improve operating efficiency.
Description
Technical field
The utility model is related to a kind of modulator of acquisition terminal, and in particular to the tune of the mobile terminal of collection geologic data
Width device.
Background technology
Into 21 century, people, which have been no longer satisfied with being sitting in before the computer desk in office or family, obtains information, and
It is the requirements at the higher level for proposing " obtaining information whenever and wherever possible ".The strong demand driving hair at full speed of mobile computing art
Exhibition, the client of information system extend on a large amount of mobile devices from desktop devices such as traditional PC, work stations.Collection
The phase modulation module of the mobile terminal of geologic data is built upon on the mobile terminal of mobile computing environment, limited processing capacity, knot
Closing GPS positioning technology, there is provided geographic information services distributed, mobile, with chance property with wireless technology.Existing collection geology
The mobile terminals of data by its internal component in use, easily disturbed, usually jitter when data are uploaded,
Cause work efficiency drop.
Utility model content
Technical problem to be solved in the utility model is to solve the deficiencies in the prior art, it is therefore intended that provide collection geology
The modulator of the mobile terminal of data, solves the problem of upstream data signal is unstable.
The utility model is achieved through the following technical solutions：
Gather geologic data mobile terminal modulator, including local oscillator module, frequency multiplier, amplitude modulator, frequency mixer,
Power amplifier and low frequency signal input module, the local oscillator module, frequency multiplier, amplitude modulator, frequency mixer and power amplification
Device is sequentially connected；The local oscillator module is used to produce carrier signal；The frequency multiplier is used to receive the load sent from local oscillator module
Ripple signal；The amplitude modulator is used to low frequency signal being modulated on carrier wave to produce amplitude-modulated signal；The frequency mixer is used for will
High-frequency signal is another value by a magnitude transform；The power amplifier is used to send out the power amplification of signal needed for
Penetrate power；The low frequency signal input module input low frequency signal is modulated for amplitude modulator.
Further, the circuit between the frequency multiplier and amplitude modulator is provided with high-frequency amplifier, by high-frequency signal
Voltage magnitude be amplified to voltage magnitude needed for amplitude modulator.
Further, low-frequency amplifier is provided between amplitude modulator and the low frequency signal input module, low frequency is believed
Number voltage magnitude is amplified to voltage magnitude needed for amplitude modulator.
Further, the power amplifier uses class C power amplifier, because circuit output voltage is 100mV, institute
To select class C power amplifier.
Further, the local oscillator module uses tandem type crystal oscillating circuit, and frequency of oscillation is controlled by tandem type crystal oscillating circuit,
Stability is high.
Further, tandem type crystal oscillating circuit includes first resistor, second resistance, 3rd resistor, the first inductance, the first electricity
Appearance, the second electric capacity, the 3rd electric capacity, triode, crystal oscillator, the termination power VCC of the first inductance one, its other end and triode
Colelctor electrode is connected；The emitter stage connection of described 3rd resistor one end and triode, its other end ground connection；Described second resistance one end
It is connected with the base stage of triode, its other end is connected with 3rd resistor earth terminal；3rd electric capacity is connected in parallel on second resistance two
End；Described first resistor one end is connected to the base stage of triode, and its other end is connected to that of the first inductance connection power supply VCC
End；Described crystal oscillator one end is connected on the circuit that triode is connected with 3rd resistor, and its other end is cathode output end；Described
One electric capacity one end is connected on the circuit that the first inductance is connected with triode, and its other end is connected to the cathode output end of crystal oscillator；
Described second electric capacity one end is connected with 3rd resistor earth terminal, and its other end is connected to the cathode output end of crystal oscillator；Described 3rd
The earth terminal of resistance is cathode output end.
The utility model compared with prior art, has the following advantages and advantages：The utility model gathers geology
The modulator of the mobile terminal of data amplifies output signal provided with power amplifier so that in the movement of application collection geologic data
During terminal, it is to avoid the interference between internal component, while processing can also be finely adjusted to the amplitude of signal, believe output
Number amplitude meet required standard so that upload data when signal more stablize, improve operating efficiency.
Brief description of the drawings
Accompanying drawing described herein is used for providing further understanding the utility model embodiment, constitutes the one of the application
Part, does not constitute the restriction to the utility model embodiment.In the accompanying drawings：
Fig. 1 is the utility model structural representation.
Fig. 2 is the utility model tandem type crystal oscillating circuit figure.
Mark and corresponding parts title in accompanying drawing：
R1- first resistors, R2- second resistances, R3- 3rd resistors, the electric capacity of C1- first, the electric capacity of C2- second, the electricity of C3- the 3rd
Hold, Q1- triodes, T- crystal oscillators.
Embodiment
For the purpose of this utility model, technical scheme and advantage is more clearly understood, with reference to embodiment and accompanying drawing,
The utility model is described in further detail, and exemplary embodiment of the present utility model and its explanation are only used for explaining this
Utility model, is not intended as limiting of the present utility model.
Embodiment
As shown in figure 1, the modulator of the mobile terminal of collection geologic data, including local oscillator module, frequency multiplier, amplitude modulation(PAM)
Device, frequency mixer, power amplifier and low frequency signal input module, the local oscillator module, frequency multiplier, amplitude modulator, frequency mixer
And power amplifier is sequentially connected；The local oscillator module is used to produce carrier signal；The frequency multiplier is used to receive from local oscillator mould
The carrier signal that block is sent；The amplitude modulator is used to low frequency signal being modulated on carrier wave to produce amplitude-modulated signal；It is described mixed
It is another value by a magnitude transform that frequency device, which is used for high-frequency signal,；The power amplifier is used to put the power of signal
The big transmission power needed for；The low frequency signal input module input low frequency signal is modulated for amplitude modulator.
Circuit between frequency multiplier and amplitude modulator is provided with high-frequency amplifier, and high-frequency signal voltage amplitude is amplified to
Voltage magnitude needed for amplitude modulator.Low-frequency amplifier is provided between amplitude modulator and low frequency signal input module, by low frequency
Signal voltage amplitude is amplified to voltage magnitude needed for amplitude modulator.Power amplifier uses class C power amplifier, due to electricity
Road output voltage amplitude is 100mV, so from class C power amplifier.Local oscillator module uses tandem type crystal oscillating circuit, vibration
Frequency is controlled by tandem type crystal oscillating circuit, and stability is high.
Tandem type crystal oscillating circuit includes first resistor R1, second resistance R2,3rd resistor R3, the first inductance L1, the first electricity
Hold C1, the second electric capacity C2, the 3rd electric capacity C3, triode Q1, crystal oscillator T, the termination power VCC of the first inductance L1 mono-, its is another
End is connected with triode Q1 colelctor electrode；Described 3rd resistor R3 one end is connected with triode Q1 emitter stage, its another termination
Ground；Described second resistance R2 one end is connected with triode Q1 base stage, and its other end is connected with 3rd resistor R3 earth terminals；It is described
3rd electric capacity C3 is connected in parallel on second resistance R2 two ends；Described first resistor R1 one end is connected to triode Q1 base stage, and its is another
End is connected to the first inductance L1 connection power supplys VCC that one end；Described crystal oscillator T one end is connected to triode Q1 and 3rd resistor R3
On the circuit of connection, its other end is cathode output end；Described first electric capacity C1 one end is connected to the first inductance L1 and triode
On the circuit of Q1 connections, its other end is connected to crystal oscillator T cathode output end；Described second electric capacity C2 one end and 3rd resistor R3
Earth terminal is connected, and its other end is connected to crystal oscillator T cathode output end；The earth terminal of the 3rd resistor R3 exports for negative pole
End.Low-resistance is presented using crystal oscillator in tandem type crystal oscillator at its series resonance condition, once deviate at series resonance condition,
The characteristics of equivalent resistance increased dramatically, it is connected in feedback branch.Meanwhile, the frequency of oscillation of tandem type crystal is exactly that crystal is humorous
Shake the series resonance frequency of device.The characteristics of this circuit, is used using quartz resonator as series resonant circuit.First inductance
The oscillation circuit of L1, the first electric capacity C1 and the second electric capacity C2 compositions is tuned at crystal oscillator, in this frequency, and crystal oscillator T presents very low
Impedance, feedback signal is very strong.For other frequencies, because crystal oscillator T impedance increases sharply, feedback weakens, it is impossible to produce vibration.
So, frequency of oscillation is controlled by crystal oscillator T, and stability is high.Crystal oscillator T is placed in is sent out the positive-feedback circuit that amplifier is constituted by two-stage altogether,
Constitute the series connection crystal oscillating circuit suitable for low frequency.
Above-described embodiment, is entered to the purpose of this utility model, technical scheme and beneficial effect
One step is described in detail, be should be understood that and be the foregoing is only embodiment of the present utility model, is not used to limit
Fixed protection domain of the present utility model, all any modifications within spirit of the present utility model and principle, made, is equally replaced
Change, improve, should be included within protection domain of the present utility model.
Claims (6)
1. gather the modulator of the mobile terminal of geologic data, it is characterised in that including local oscillator module, frequency multiplier, amplitude modulation(PAM)
Device, frequency mixer, power amplifier and low frequency signal input module, the local oscillator module, frequency multiplier, amplitude modulator, frequency mixer
And power amplifier is sequentially connected；The local oscillator module is used to produce carrier signal；The frequency multiplier is used to receive from local oscillator mould
The carrier signal that block is sent；The amplitude modulator is used to low frequency signal being modulated on carrier wave to produce amplitude-modulated signal；It is described mixed
It is another value by a magnitude transform that frequency device, which is used for high-frequency signal,；The power amplifier is used to put the power of signal
The big transmission power needed for；The low frequency signal input module input low frequency signal is modulated for amplitude modulator.
2. the modulator of the mobile terminal of collection geologic data according to claim 1, it is characterised in that the frequency multiplier
Circuit between amplitude modulator is provided with high-frequency amplifier.
3. the modulator of the mobile terminal of collection geologic data according to claim 1, it is characterised in that the amplitude is adjusted
Low-frequency amplifier is provided between device and low frequency signal input module processed.
4. the modulator of the mobile terminal of collection geologic data according to claim 1, it is characterised in that the power is put
Big device uses class C power amplifier.
5. the modulator of the mobile terminal of collection geologic data according to claim 1, it is characterised in that the local oscillator mould
Block uses tandem type crystal oscillating circuit.
6. the modulator of the mobile terminal of collection geologic data according to claim 5, it is characterised in that the tandem type
Crystal oscillating circuit include first resistor (R1), second resistance (R2), 3rd resistor (R3), the first inductance (L1), the first electric capacity (C1),
Second electric capacity (C2), the 3rd electric capacity (C3), triode (Q1), crystal oscillator (T), the termination power VCC of the first inductance (L1) one, its
The other end is connected with the colelctor electrode of triode (Q1)；Described 3rd resistor (R3) one end is connected with the emitter stage of triode (Q1),
Its other end is grounded；Described second resistance (R2) one end is connected with the base stage of triode (Q1), its other end and 3rd resistor
(R3) earth terminal is connected；3rd electric capacity (C3) is connected in parallel on second resistance (R2) two ends；Described first resistor (R1) one end connects
Triode (Q1) base stage is connected on, its other end is connected to the first inductance (L1) connection power supply VCC that one end；The crystal oscillator
(T) one end is connected on the circuit that triode (Q1) is connected with 3rd resistor (R3), and its other end is cathode output end；Described
One electric capacity (C1) one end is connected on the circuit that the first inductance (L1) is connected with triode (Q1), and its other end is connected to crystal oscillator
(T) cathode output end；Described second electric capacity (C2) one end is connected with 3rd resistor (R3) earth terminal, and its other end is connected to crystalline substance
Shake the cathode output end of (T)；The earth terminal of the 3rd resistor (R3) is cathode output end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720231239.9U CN206490688U (en) | 2017-03-10 | 2017-03-10 | Gather the modulator of the mobile terminal of geologic data |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720231239.9U CN206490688U (en) | 2017-03-10 | 2017-03-10 | Gather the modulator of the mobile terminal of geologic data |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206490688U true CN206490688U (en) | 2017-09-12 |
Family
ID=59762719
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720231239.9U Expired - Fee Related CN206490688U (en) | 2017-03-10 | 2017-03-10 | Gather the modulator of the mobile terminal of geologic data |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206490688U (en) |
-
2017
- 2017-03-10 CN CN201720231239.9U patent/CN206490688U/en not_active Expired - Fee Related
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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: 20170912 |