CN204993334U - A high -efficient relaying RF communications circuit for between concentrator - Google Patents
A high -efficient relaying RF communications circuit for between concentrator Download PDFInfo
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- CN204993334U CN204993334U CN201520790514.1U CN201520790514U CN204993334U CN 204993334 U CN204993334 U CN 204993334U CN 201520790514 U CN201520790514 U CN 201520790514U CN 204993334 U CN204993334 U CN 204993334U
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Abstract
The utility model provides a high -efficient relaying RF communications circuit for between concentrator, including a CPU, receiving circuit, radio frequency control chip and transmitting circuit, CPU passes through the radio frequency control chip is connected respectively transmitting circuit and receiving circuit, the radio frequency control chip is connected to receiving circuit still includes power vdd_PA, power vdd_B, directional coupler T1, ba lun device T2, electric capacity C3, electric capacity C4, electric capacity C5, electric capacity C8, electric capacity C9, electric capacity C10, electric capacity C11, electric capacity C12, electric capacity C13, electric capacity C14, inductance L2, inductance L3, resistance R3 and antenna, the transmitting circuit includes a power amplifier U1, the utility model discloses circuit wireless communication frequency channel is adjustable, and power communication is adjustable, and the communications and information capacity is adjustable, and GPRS module expense is saved to the at utmost.
Description
Technical field
The utility model relates to a kind of for the efficient relaying radio frequency communications circuitry between concentrator.
Background technology
Current fault detector communication mode major part is such, and fault detector uses 433M radio frequency information to be sent to the communication concentrator of annex, and communication concentrator uses GPRS mode and main website end to carry out data transmission the data collected again.This communication mode must be equipped with a set of concentrator on every set of fault indicating device, so just consumes a large amount of GPRS module, cost adds many expenses.Conventional trunking traffic module also just uses 433M radio frequency to do expansion, communication reliability exists wretched insufficiency, receives very large must restriction.Therefore, need a kind of efficient radio frequency communications circuitry to realize carrying out reliable data interaction between fault detector and concentrator, efficient trunking traffic circuit is exactly produce in this case.
Existing fault detector is when breaking down situation, trunk module is passed to by rf data, near trunk module have collected after all fault detector information, re-use same radio frequency module and data are sent to concentrator, because frequency range is identical, when REPEATER DATA issues concentrator, loss of data can be caused unavoidably.
Summary of the invention
The technical problems to be solved in the utility model, is to provide a kind of for the efficient relaying radio frequency communications circuitry between concentrator, at utmost saves GPRS module expense.
The utility model is achieved in that a kind of for the efficient relaying radio frequency communications circuitry between concentrator, comprises a CPU, receiving circuit, radio frequency control chip and radiating circuit, described CPU connects described radiating circuit and receiving circuit respectively by described radio frequency control chip, and described radio frequency control chip is connected to described receiving circuit, also comprises power supply Vdd_PA, power supply Vdd_B, directional coupler T1, barron device part T2, electric capacity C3, electric capacity C4, electric capacity C5, electric capacity C8, electric capacity C9, electric capacity C10, electric capacity C11, electric capacity C12, electric capacity C13, electric capacity C14, inductance L 2, inductance L 3, resistance R3 and antenna, described radiating circuit comprises a power amplifier U1, and power supply Vdd_PA connects one end of described electric capacity C3 respectively, one end of electric capacity C4, one end of electric capacity C5 and one end of inductance L 2, the other end of described inductance L 2 connects the pin RF_OUT1 of described power amplifier U1 respectively, the pin RF_OUT2 of power amplifier U1 and one end of inductance L 3, the other end of described inductance L 3 is connected to one end of described electric capacity C8 and one end of electric capacity C10, the other end of described electric capacity C10 connects one end of described electric capacity C9 and the pin In of directional coupler T1 respectively, the CPL pin of described directional coupler T1 is by resistance R3 ground connection, the pin OUT of described directional coupler is connected to antenna, the pin Term of described directional coupler T1 is connected to the pin UB of described barron device part T2, the pin B1 of described barron device part T2 is connected to described receiving circuit by electric capacity C12, the pin B2 of described barron device part T2 is connected to described receiving circuit by electric capacity C11, and power supply Vdd_B connects the pin PD of described power amplifier U1 respectively, one end of electric capacity C13 and one end of electric capacity C14, the pin RE_IN of described power amplifier U1 is connected to described radio frequency control chip, the other end of described electric capacity C3, the other end of electric capacity C4, the other end of electric capacity C5, the other end of electric capacity C8, the other end of electric capacity C9, the pin GND1 of directional coupler, the pin GND2 of directional coupler, the pin GND3 of directional coupler, the pin GND4 of directional coupler, the pin GND1 of barron device part T2, the pin GND2 of barron device part T2, the other end of electric capacity C13, the other end of electric capacity C14, the pin GND1 of power amplifier U1 and the equal ground connection of pin GND2 of power amplifier U1.
Further, also comprise electric capacity C1, electric capacity C2, electric capacity C6, electric capacity C7, inductance L 1, resistance R1, resistance R2, diode D1 and diode D2, described power supply Vdd_PA connects one end of described inductance L 1 respectively, one end of electric capacity C1, one end of electric capacity C2, one end of electric capacity C6, one end of electric capacity C7 and the pin VBIAS of power amplifier U1, the other end of described inductance L 1 is connected to the pin VCC of described power amplifier U1, the pin G1 of described power amplifier connects one end of described resistance R1 and the negative pole of diode D1 respectively, the pin G2 of described power amplifier U1 connects one end of described resistance R2 and the negative pole of diode D2 respectively, described CPU is connected to the positive pole of described diode D1 and the positive pole of diode D2 respectively, the other end of described electric capacity C1, the other end of electric capacity C2, the other end of electric capacity C6, the other end of electric capacity C7, the other end of resistance R1 and the equal ground connection of the other end of resistance R2.
Further, described inductance L 1 is high frequency choke inductance.
Further, also comprise antennal interface chip P1, described antennal interface chip P1 is provided with an interface, described interface is connected to described antenna, the pin IN of described antennal interface chip is connected to the pin OUT of described coupler T1, the described pin GND1 of antennal interface chip P1 and the equal ground connection of pin GND2 of antennal interface chip P1.
Further, described inductance L 2 is high frequency choke inductance.
The utility model has the advantage of: the utility model is a kind of for the efficient relaying radio frequency communications circuitry between concentrator, the considering of communication distance and power consumption can be arranged flexibly, receiving and transmitting signal is isolated by directional coupler, input signal adopts both-end orthogonal signalling to improve antijamming capability, improve the communication quality of fault detector product, and wireless communication frequency band is adjustable, power communication is adjustable, communication information capacity is adjustable, at utmost saves GPRS module expense.
Accompanying drawing explanation
The utility model is further described with reference to the accompanying drawings in conjunction with the embodiments.
Fig. 1 is that the utility model is a kind of for the efficient relaying radio frequency communications circuitry between concentrator.
Embodiment
Refer to shown in Fig. 1, the utility model is used for the efficient relaying radio frequency communications circuitry between concentrator, comprises a CPU, receiving circuit, radio frequency control chip, radiating circuit, power supply Vdd_PA, power supply Vdd_B, directional coupler T1, barron device part T2, electric capacity C3, electric capacity C4, electric capacity C5, electric capacity C8, electric capacity C9, electric capacity C10, electric capacity C11, electric capacity C12, electric capacity C13, electric capacity C14, inductance L 2, inductance L 3, resistance R3 and antenna,, described CPU connects described radiating circuit and receiving circuit respectively by described radio frequency control chip, and described radio frequency control chip is connected to described receiving circuit, described radiating circuit comprises a power amplifier U1, and power supply Vdd_PA connects one end of described electric capacity C3 respectively, one end of electric capacity C4, one end of electric capacity C5 and one end of inductance L 2, the other end of described inductance L 2 connects the pin RF_OUT1 of described power amplifier U1 respectively, the pin RF_OUT2 of power amplifier U1 and one end of inductance L 3, the other end of described inductance L 3 is connected to one end of described electric capacity C8 and one end of electric capacity C10, the other end of described electric capacity C10 connects one end of described electric capacity C9 and the pin In of directional coupler T1 respectively, the CPL pin of described directional coupler T1 is by resistance R3 ground connection, the pin OUT of described directional coupler is connected to antenna, the pin Term of described directional coupler T1 is connected to the pin UB of described barron device part T2, the pin B1 of described barron device part T2 is connected to described receiving circuit by electric capacity C12, the pin B2 of described barron device part T2 is connected to described receiving circuit by electric capacity C11, and power supply Vdd_B connects the pin PD of described power amplifier U1 respectively, one end of electric capacity C13 and one end of electric capacity C14, the pin RE_IN of described power amplifier U1 is connected to described radio frequency control chip, the other end of described electric capacity C3, the other end of electric capacity C4, the other end of electric capacity C5, the other end of electric capacity C8, the other end of electric capacity C9, the pin GND1 of directional coupler, the pin GND2 of directional coupler, the pin GND3 of directional coupler, the pin GND4 of directional coupler, the pin GND1 of barron device part T2, the pin GND2 of barron device part T2, the other end of electric capacity C13, the other end of electric capacity C14, the pin GND1 of power amplifier U1 and the equal ground connection of pin GND2 of power amplifier U1, described inductance L 2 is high frequency choke inductance.
The utility model also comprises electric capacity C1, electric capacity C2, electric capacity C6, electric capacity C7, inductance L 1, resistance R1, resistance R2, diode D1 and diode D2, described power supply Vdd_PA connects one end of described inductance L 1 respectively, one end of electric capacity C1, one end of electric capacity C2, one end of electric capacity C6, one end of electric capacity C7 and the pin VBIAS of power amplifier U1, the other end of described inductance L 1 is connected to the pin VCC of described power amplifier U1, the pin G1 of described power amplifier connects one end of described resistance R1 and the negative pole of diode D1 respectively, the pin G2 of described power amplifier U1 connects one end of described resistance R2 and the negative pole of diode D2 respectively, described CPU is connected to the positive pole of described diode D1 and the positive pole of diode D2 respectively, the other end of described electric capacity C1, the other end of electric capacity C2, the other end of electric capacity C6, the other end of electric capacity C7, the other end of resistance R1 and the equal ground connection of the other end of resistance R2, described inductance L 1 is high frequency choke inductance.
Described antennal interface chip P1 is provided with an interface, described interface is connected to described antenna, the pin IN of described antennal interface chip is connected to the pin OUT of described coupler T1, the described pin GND1 of antennal interface chip P1 and the equal ground connection of pin GND2 of antennal interface chip P1.
As shown in fig. 1, U1 is radio-frequency power amplifier chip, and Vdd-PA is its power supply, regulating power source voltage value, can adjust peak power output, L1, L2 is high frequency choke inductance, C1, C2, C3, C4, C5, C6, C7 are filter capacitors, and these inductance capacitances one are to the loop of radiofrequency signal one to ground, two is DC feedback circuits, ensures that radiofrequency signal and direct current signal are isolated mutually.Vdd-B is power consumption control pin, when high input voltage, controls this pin and power amplifier can be made to enter low-power consumption mode.G1, G2 are gain control making pin, can control power output size, and D1, D2 are protection diode, and anti-stop signal pours in down a chimney, R1, and R2 is current limiting safeguard resistor.T1 is radio-frequency (RF) coupler, the inductance L 3 between power amplifier and coupler and electric capacity C8, and C9, C10 form filter, the interference signal that filtering is unnecessary.P1 is antennal interface.T2 is barron device part.
The course of work describes: radio frequency transmissions, after U1 power amplifier, exports to antenna by coupler T1.By control Vdd-PA, Vdd-B, G1, G2 can reach the object controlling power output.When transmission range is far away, the gain of power amplifier can be improved, reach the object of long-distance transmissions; When close together, power amplifier gain can be reduced, drag down Vdd-B simultaneously, arrive the object reducing power consumption.Radio frequency receiving signal enters coupler by antenna, then is input to Ba Lun by the coupling port of coupler, and it is transformed into both-end orthogonal signalling by single-ended signal, improves the antijamming capability of input signal.
Although the foregoing describe embodiment of the present utility model; but be familiar with those skilled in the art to be to be understood that; specific embodiment described by us is illustrative; instead of for the restriction to scope of the present utility model; those of ordinary skill in the art, in the modification of the equivalence done according to spirit of the present utility model and change, should be encompassed in scope that claim of the present utility model protects.
Claims (5)
1., for the efficient relaying radio frequency communications circuitry between concentrator, comprise a CPU, receiving circuit, radio frequency control chip and radiating circuit, described CPU connects described radiating circuit and receiving circuit respectively by described radio frequency control chip, and described radio frequency control chip is connected to described receiving circuit, it is characterized in that: also comprise power supply Vdd_PA, power supply Vdd_B, directional coupler T1, barron device part T2, electric capacity C3, electric capacity C4, electric capacity C5, electric capacity C8, electric capacity C9, electric capacity C10, electric capacity C11, electric capacity C12, electric capacity C13, electric capacity C14, inductance L 2, inductance L 3, resistance R3 and antenna, described radiating circuit comprises a power amplifier U1, and power supply Vdd_PA connects one end of described electric capacity C3 respectively, one end of electric capacity C4, one end of electric capacity C5 and one end of inductance L 2, the other end of described inductance L 2 connects the pin RF_OUT1 of described power amplifier U1 respectively, the pin RF_OUT2 of power amplifier U1 and one end of inductance L 3, the other end of described inductance L 3 is connected to one end of described electric capacity C8 and one end of electric capacity C10, the other end of described electric capacity C10 connects one end of described electric capacity C9 and the pin In of directional coupler T1 respectively, the CPL pin of described directional coupler T1 is by resistance R3 ground connection, the pin OUT of described directional coupler is connected to antenna, the pin Term of described directional coupler T1 is connected to the pin UB of described barron device part T2, the pin B1 of described barron device part T2 is connected to described receiving circuit by electric capacity C12, the pin B2 of described barron device part T2 is connected to described receiving circuit by electric capacity C11, and power supply Vdd_B connects the pin PD of described power amplifier U1 respectively, one end of electric capacity C13 and one end of electric capacity C14, the pin RE_IN of described power amplifier U1 is connected to described radio frequency control chip, the other end of described electric capacity C3, the other end of electric capacity C4, the other end of electric capacity C5, the other end of electric capacity C8, the other end of electric capacity C9, the pin GND1 of directional coupler, the pin GND2 of directional coupler, the pin GND3 of directional coupler, the pin GND4 of directional coupler, the pin GND1 of barron device part T2, the pin GND2 of barron device part T2, the other end of electric capacity C13, the other end of electric capacity C14, the pin GND1 of power amplifier U1 and the equal ground connection of pin GND2 of power amplifier U1.
2. a kind of for the efficient relaying radio frequency communications circuitry between concentrator as claimed in claim 1, it is characterized in that: also comprise electric capacity C1, electric capacity C2, electric capacity C6, electric capacity C7, inductance L 1, resistance R1, resistance R2, diode D1 and diode D2, described power supply Vdd_PA connects one end of described inductance L 1 respectively, one end of electric capacity C1, one end of electric capacity C2, one end of electric capacity C6, one end of electric capacity C7 and the pin VBIAS of power amplifier U1, the other end of described inductance L 1 is connected to the pin VCC of described power amplifier U1, the pin G1 of described power amplifier connects one end of described resistance R1 and the negative pole of diode D1 respectively, the pin G2 of described power amplifier U1 connects one end of described resistance R2 and the negative pole of diode D2 respectively, described CPU is connected to the positive pole of described diode D1 and the positive pole of diode D2 respectively, the other end of described electric capacity C1, the other end of electric capacity C2, the other end of electric capacity C6, the other end of electric capacity C7, the other end of resistance R1 and the equal ground connection of the other end of resistance R2.
3. a kind of for the efficient relaying radio frequency communications circuitry between concentrator as claimed in claim 2, it is characterized in that: described inductance L 1 is high frequency choke inductance.
4. a kind of for the efficient relaying radio frequency communications circuitry between concentrator as claimed in claim 1, it is characterized in that: also comprise antennal interface chip P1, described antennal interface chip P1 is provided with an interface, described interface is connected to described antenna, the pin IN of described antennal interface chip is connected to the pin OUT of described coupler T1, the described pin GND1 of antennal interface chip P1 and the equal ground connection of pin GND2 of antennal interface chip P1.
5. a kind of for the efficient relaying radio frequency communications circuitry between concentrator as claimed in claim 1, it is characterized in that: described inductance L 2 is high frequency choke inductance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520790514.1U CN204993334U (en) | 2015-10-14 | 2015-10-14 | A high -efficient relaying RF communications circuit for between concentrator |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520790514.1U CN204993334U (en) | 2015-10-14 | 2015-10-14 | A high -efficient relaying RF communications circuit for between concentrator |
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| CN204993334U true CN204993334U (en) | 2016-01-20 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105187090A (en) * | 2015-10-14 | 2015-12-23 | 福建奥通迈胜电力科技有限公司 | Efficient relay radio frequency communication circuit used between concentrators |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105187090A (en) * | 2015-10-14 | 2015-12-23 | 福建奥通迈胜电力科技有限公司 | Efficient relay radio frequency communication circuit used between concentrators |
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