CN215990728U - Novel signal extraction device - Google Patents
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- CN215990728U CN215990728U CN202122485386.8U CN202122485386U CN215990728U CN 215990728 U CN215990728 U CN 215990728U CN 202122485386 U CN202122485386 U CN 202122485386U CN 215990728 U CN215990728 U CN 215990728U
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Abstract
The utility model relates to the technical field of signal extraction, in particular to a novel signal extraction device, which comprises: the pre-amplification unit is connected with the phase-locked amplification unit, the phase-locked amplification unit is connected with the filtering unit, and the phase-locked amplification unit is also connected with an external frequency generator; the pre-amplification unit amplifies the received external interference noise signal and outputs the amplified interference noise signal to the phase-locked amplification unit, the phase-locked amplification unit compares the received interference noise signal amplified by the pre-amplification unit with an input reference signal, and if the comparison is consistent, a square wave signal is output; after receiving the interference noise signal amplified by the pre-amplification unit, the phase-locked amplification unit compares the interference noise signal with an input reference signal, wherein the comparison comprises frequency and phase comparison; and then realize the specific extraction to frequency and phase place, and the circuit is simple, and is with low costs, small, convenient to use, extensive applicability.
Description
Technical Field
The utility model relates to the technical field of signal extraction, in particular to a novel signal extraction device.
Background
Most of the existing signal extraction devices extract signals through filters, the phases of the extracted signals cannot be selected, and the use requirements of people cannot be met.
SUMMERY OF THE UTILITY MODEL
The technical problem to be solved by the present invention is to provide a novel signal extraction device with simple circuit, low cost, small volume, convenient use and wide applicability, aiming at the above defects of the prior art.
The technical scheme adopted by the utility model for solving the technical problems is as follows:
constructing a novel signal extraction device, which comprises a preamplification unit, a phase-locked amplification unit and a filtering unit; the pre-amplification unit is used for amplifying received external interference noise signals and outputting the amplified signals to the phase-locked amplification unit, the phase-locked amplification unit compares the received interference noise signals amplified by the pre-amplification unit with an input reference signal, and if the comparison is consistent, a square wave signal is output; the filtering unit correspondingly filters the square wave signals according to preset filtering frequency and outputs the filtered square wave signals;
the pre-amplification unit is connected with the phase-locked amplification unit, the phase-locked amplification unit is connected with the filtering unit, and the phase-locked amplification unit is also connected with an external frequency generator;
the phase-locked amplifying unit compares the interference noise signal after being amplified by the pre-amplifying unit with an input reference signal, and the phase-locked amplifying unit comprises: comparing the frequency and the phase.
The novel signal extraction device comprises a pre-amplification unit, a first capacitor and a first resistor, wherein the equidirectional input end of the first operational amplifier is connected with the first capacitor and the first resistor, the other end of the first capacitor is used as the input end of the pre-amplification unit and used for receiving the external interference noise signal, and the other end of the first resistor is grounded;
the inverting input end of the first operational amplifier is connected with a second resistor and a third resistor, the other end of the second resistor is grounded, and the other end of the third resistor is connected with the output end of the first operational amplifier;
the output end of the first operational amplifier is connected with a second capacitor, and the other end of the second capacitor is connected with the phase-locked amplification unit through the output end of the pre-amplification unit;
and the negative end of the operational amplifier is connected with a negative 5V power supply end, and the positive end of the operational amplifier is connected with a negative 5V power supply end.
The novel signal extraction device is characterized in that the phase-locked amplification unit is a demodulator, an SEL A end of the demodulator is connected with a third capacitor, and the other end of the third capacitor is a reference signal input end of the phase-locked amplification unit;
the Ri nA end of the demodulator is connected with the output end of the pre-amplification unit and is also connected with a fourth resistor, and the other end of the fourth resistor is grounded;
the RA end of the demodulator is connected with the output end of the pre-amplification unit, and the CH A-end of the demodulator is connected with the CH B-end and also connected with the RF end;
the VOUT end of the demodulator is connected with an external state detection circuit or the filtering unit through the output end of the phase-locked amplifying unit;
the-VS end of the demodulator is connected with the-5V power supply end, the + VS end of the demodulator is connected with the 5V power supply end, and the SEL B end and the RB end of the demodulator are both grounded.
The novel signal extraction device comprises a filtering unit, wherein the filtering unit comprises a second operational amplifier, a 1OUT end and a 1 IN-end of the second operational amplifier are connected and are also connected with a fourth capacitor, a 1IN + end of the second operational amplifier is connected with a fifth resistor, and the other end of the fifth resistor is connected with a sixth resistor and is also connected with the other end of the fourth capacitor; the other end of the sixth resistor is an input end of the filtering unit and is connected with an output end of the phase-locked amplifying unit;
the 2IN + end of the second operational amplifier is connected with a seventh resistor, the other end of the seventh resistor is connected with an eighth resistor and a fifth capacitor, the other end of the eighth resistor is connected with the 1OUT end of the second operational amplifier, and the other end of the fifth capacitor is respectively connected with the 2OUT end and the 2 IN-end of the second operational amplifier; the output end of the second operational amplifier outputs the filtered square wave signal for the output end of the filtering unit;
and the VCC + end of the second operational amplifier is connected with the 5V power supply end, and the VCC-end is connected with the-5V power supply end.
According to the novel signal extraction device, the CSB end of the demodulator is connected with the cathode of the light emitting diode, the anode of the light emitting diode is connected with the ninth resistor, and the other end of the ninth resistor is grounded.
The novel signal extraction device further comprises a power supply circuit, wherein the power supply circuit is respectively connected with the preamplification unit, the phase-locked amplification unit and the filtering unit;
the power circuit comprises a rectifier bridge, a first three-terminal voltage regulator tube and a second three-terminal voltage regulator tube, wherein a first input end and a second input end of the rectifier bridge are respectively connected with a live wire and a zero line of 220V alternating current commercial power in a one-to-one mode;
the positive electrode output end of the rectifier bridge is connected with a sixth capacitor, the negative electrode output end of the rectifier bridge is connected with a seventh capacitor, the positive electrode of the sixth capacitor is connected with the positive electrode output end of the rectifier bridge, the negative electrode of the sixth capacitor is connected with the positive electrode of the seventh capacitor, and the negative electrode of the seventh capacitor is connected with the negative electrode output end of the rectifier bridge;
a VI end and a GND end of the first three-terminal voltage regulator tube are connected in parallel with an eighth capacitor, and a VI end and a GND end of the second three-terminal voltage regulator tube are connected in parallel with a ninth capacitor;
the VI end of the second three-terminal voltage-regulator tube is connected with the positive electrode output end of the rectifier bridge, the GND end of the second three-terminal voltage-regulator tube is connected with the GND end of the second three-terminal voltage-regulator tube and grounded, and the VI end of the second three-terminal voltage-regulator tube is connected with the negative electrode output end of the rectifier bridge;
the VO end of the first three-end voltage-stabilizing tube is the +5V power supply end, and the VOD end of the second three-end voltage-stabilizing tube is the-5V power supply end.
The utility model has the beneficial effects that: the pre-amplification unit amplifies the received external interference noise signal and outputs the amplified interference noise signal to the phase-locked amplification unit, the phase-locked amplification unit compares the received interference noise signal amplified by the pre-amplification unit with an input reference signal, and if the comparison is consistent, a square wave signal is output; the filtering unit correspondingly filters the square wave signals according to preset filtering frequency and outputs the filtered square wave signals; after receiving the interference noise signal amplified by the pre-amplification unit, the phase-locked amplification unit compares the interference noise signal with an input reference signal, wherein the comparison comprises frequency and phase comparison; and then realize the specific extraction to frequency and phase place, and the circuit is simple, and is with low costs, small, convenient to use, extensive applicability.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the present invention will be further described with reference to the accompanying drawings and embodiments, wherein the drawings in the following description are only part of the embodiments of the present invention, and for those skilled in the art, other drawings can be obtained without inventive efforts according to the accompanying drawings:
fig. 1 is a schematic circuit diagram of a pre-amplification unit, a phase-locked amplification unit and a filtering unit of a novel signal extraction device according to a preferred embodiment of the utility model;
fig. 2 is a schematic circuit diagram of a power circuit of the novel signal extraction device according to the preferred embodiment of the utility model.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present invention, and it is obvious that the described embodiments are some embodiments of the present invention, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without inventive step, are within the scope of the present invention.
Fig. 1 shows a novel signal extraction device according to a preferred embodiment of the present invention, and fig. 2 to 2 are also included; comprises a pre-amplification unit 101, a phase-locked amplification unit 102 and a filtering unit 103; the pre-amplification unit 101 is configured to amplify a received external interference noise signal and output the amplified interference noise signal to the phase-locked amplification unit 102, and the phase-locked amplification unit 102 compares the received interference noise signal amplified by the pre-amplification unit 101 with an input reference signal, and outputs a square wave signal if the comparison is consistent; the filtering unit 103 correspondingly filters the square wave signals according to a preset filtering frequency, and outputs the filtered square wave signals;
the pre-amplification unit 101 is connected with the phase-locked amplification unit 102, the phase-locked amplification unit 102 is connected with the filtering unit 103, and the phase-locked amplification unit 102 is also connected with an external frequency generator;
the phase-locked amplifying unit 102 compares the interference noise signal amplified by the pre-amplifying unit 101 with the input reference signal, and includes: comparing the frequency and the phase;
the pre-amplification unit 101 amplifies the received external interference noise signal and outputs the amplified signal to the phase-locked amplification unit 102, the phase-locked amplification unit 102 compares the received interference noise signal amplified by the pre-amplification unit 101 with an input reference signal, and if the comparison is consistent, a square wave signal is output; the filtering unit 103 correspondingly filters the square wave signals according to a preset filtering frequency, and outputs the filtered square wave signals; after receiving the interference noise signal amplified by the pre-amplification unit 101, the phase-locked amplification unit 102 compares the interference noise signal with an input reference signal, including comparing a frequency and a phase; and then realize the specific extraction to frequency and phase place, and the circuit is simple, and is with low costs, small, convenient to use, extensive applicability.
As shown in fig. 1, the pre-amplification unit 101 includes a first operational amplifier U2, a first capacitor C3 and a first resistor R5 are connected to a same-direction input end of the first operational amplifier U2, the other end of the first capacitor C3 is an input end of the pre-amplification unit 101 and is used for receiving an external interference noise signal, and the other end of the first resistor R5 is grounded;
the inverting input end of the first operational amplifier U2 is connected with a second resistor R1 and a third resistor R2, the other end of the second resistor R1 is grounded, and the other end of the third resistor R2 is connected with the output end of the first operational amplifier U2;
the output end of the first operational amplifier U2 is connected with a second capacitor C2, and the other end of the second capacitor C2 is connected with the phase-locked amplifying unit 102 as the output end of the pre-amplifying unit 101;
the negative end of the operational amplifier is connected with a negative 5V power supply end, and the positive end of the operational amplifier is connected with a negative 5V power supply end; the circuit is simple, the cost is low, and the volume is small.
As shown in fig. 1, the phase-locked amplifying unit 102 is a demodulator U1, a SEL a end of the demodulator U1 is connected to a third capacitor C8, and the other end of the third capacitor C8 is a reference signal input end of the phase-locked amplifying unit 102;
the rinA end of the demodulator U1 is connected with the output end of the pre-amplification unit 101 and is also connected with a fourth resistor R3, and the other end of the fourth resistor R3 is grounded;
the RA end of the demodulator U1 is connected with the output end of the pre-amplification unit 101, and the CH A-end and the CH B-end of the demodulator U1 are connected and also connected with the RF end;
the VOUT terminal of the demodulator U1 is the output terminal of the phase-locked amplifying unit 102 and is connected to an external state detecting circuit or the filtering unit 103;
the-VS end of the demodulator U1 is connected with the-5V power supply end, the + VS end is connected with the 5V power supply end, and the SEL B end and the RB end of the demodulator U1 are both grounded; the demodulator U1 is AD630 in model number, and has a phase locking function, so that the product volume is greatly reduced, and the use is convenient;
further, the phase-locked amplification unit 102 locks the same frequency and phase signal from the interference noise signal according to the change of the frequency and phase of the reference signal for dynamic phase-locked amplification.
As shown IN fig. 1, the filtering unit 103 includes a second operational amplifier U3, a 1OUT terminal of the second operational amplifier U3 is connected to a 1 IN-terminal and is further connected to a fourth capacitor C9, a 1IN + terminal of the second operational amplifier U3 is connected to a fifth resistor R12, and the other terminal of the fifth resistor R12 is connected to a sixth resistor R11 and is further connected to the other terminal of the fourth capacitor C9; the other end of the sixth resistor R11 is an input end of the filtering unit 103 and is connected with an output end of the phase-locked amplifying unit 102;
the 2IN + end of the second operational amplifier U3 is connected with a seventh resistor R13, the other end of the seventh resistor R13 is connected with an eighth resistor R14 and a fifth capacitor C10, the other end of the eighth resistor R14 is connected with the 1OUT end of the second operational amplifier U3, and the other end of the fifth capacitor C10 is respectively connected with the 2OUT end and the 2 IN-end of the second operational amplifier U3; the output end of the second operational amplifier U3 outputs the filtered square wave signal for the output end of the filtering unit 103;
the VCC + end of the second operational amplifier U3 is connected with the 5V power supply end and the VCC-end is connected with the-5V power supply end;
the fifth resistor R12 to the eighth resistor R14, the fourth capacitor C9 and the fifth capacitor C10 are used for setting the filtering frequency of the filtering unit 103; the filtering unit 103 using an operational amplifier is simple, low in cost and small in size.
As shown in fig. 1, the CSB end of the demodulator U1 is connected to the cathode of the led D1, the anode of the led D1 is connected to the ninth resistor R8, and the other end of the ninth resistor R8 is grounded; the led D1 is used to display the frequency of the reference signal.
As shown in fig. 1 and fig. 2, the novel signal extraction apparatus further includes a power circuit 104, and the power circuit 104 is respectively connected with the pre-amplification unit 101, the phase-locked amplification unit 102 and the filtering unit 103;
the power circuit 104 comprises a rectifier bridge VD1, a first three-terminal voltage regulator tube U21 and a second three-terminal voltage regulator tube U22, wherein a first input end and a second input end of the rectifier bridge VD1 are respectively connected with a live wire and a zero wire of 220V alternating current commercial power in a one-to-one mode;
the positive electrode output end of the rectifier bridge VD1 is connected with a sixth capacitor C21, the negative electrode output end of the rectifier bridge VD1 is connected with a seventh capacitor C22, the positive electrode of the sixth capacitor C21 is connected with the positive electrode output end of the rectifier bridge VD1, the negative electrode of the sixth capacitor C21 is connected with the positive electrode of the seventh capacitor C22, and the negative electrode of the seventh capacitor C22 is connected with the negative electrode output end of the rectifier bridge VD 1;
an eighth capacitor C23 is connected in parallel between the VI end and the GND end of the first three-terminal regulator tube U21, and a ninth capacitor C24 is connected in parallel between the VI end and the GND end of the second three-terminal regulator tube U22;
the VI end of the second three-terminal voltage-regulator tube U22 is connected with the anode output end of the rectifier bridge VD1, the GND end of the second three-terminal voltage-regulator tube U22 is connected with the GND end of the second three-terminal voltage-regulator tube U22 and grounded, and the VI end of the second three-terminal voltage-regulator tube U22 is connected with the cathode output end of the rectifier bridge VD 1;
the VO end of the first three-terminal voltage regulator tube U21 is a +5V power supply end, and the VO end of the second three-terminal voltage regulator tube U22 is a-5V power supply end; the circuit is simple, the cost is low, and the volume is small.
It will be understood that modifications and variations can be made by persons skilled in the art in light of the above teachings and all such modifications and variations are intended to be included within the scope of the utility model as defined in the appended claims.
Claims (6)
1. A novel signal extraction device comprises a preamplification unit, a phase-locked amplification unit and a filtering unit; the device is characterized in that the pre-amplification unit is used for amplifying received external interference noise signals and outputting the amplified signals to the phase-locked amplification unit, the phase-locked amplification unit compares the received interference noise signals amplified by the pre-amplification unit with input reference signals, and if the comparison is consistent, square wave signals are output; the filtering unit correspondingly filters the square wave signals according to preset filtering frequency and outputs the filtered square wave signals;
the pre-amplification unit is connected with the phase-locked amplification unit, the phase-locked amplification unit is connected with the filtering unit, and the phase-locked amplification unit is also connected with an external frequency generator;
the phase-locked amplifying unit compares the interference noise signal after being amplified by the pre-amplifying unit with an input reference signal, and the phase-locked amplifying unit comprises: comparing the frequency and the phase.
2. The novel signal extraction device according to claim 1, wherein the pre-amplification unit comprises a first operational amplifier, a first capacitor and a first resistor are connected to a same-direction input end of the first operational amplifier, the other end of the first capacitor is an input end of the pre-amplification unit and is used for receiving the external interference noise signal, and the other end of the first resistor is grounded;
the inverting input end of the first operational amplifier is connected with a second resistor and a third resistor, the other end of the second resistor is grounded, and the other end of the third resistor is connected with the output end of the first operational amplifier;
the output end of the first operational amplifier is connected with a second capacitor, and the other end of the second capacitor is connected with the phase-locked amplification unit through the output end of the pre-amplification unit;
and the negative end of the operational amplifier is connected with a negative 5V power supply end, and the positive end of the operational amplifier is connected with a negative 5V power supply end.
3. The novel signal extraction device according to claim 2, wherein the phase-locked amplification unit is a demodulator, a third capacitor is connected to an SEL a terminal of the demodulator, and the other terminal of the third capacitor is a reference signal input terminal of the phase-locked amplification unit;
the RinA end of the demodulator is connected with the output end of the pre-amplification unit and is also connected with a fourth resistor, and the other end of the fourth resistor is grounded;
the RA end of the demodulator is connected with the output end of the pre-amplification unit, and the CH A-end of the demodulator is connected with the CH B-end and also connected with the RF end;
the VOUT end of the demodulator is connected with an external state detection circuit or the filtering unit through the output end of the phase-locked amplifying unit;
the-VS end of the demodulator is connected with the-5V power supply end, the + VS end of the demodulator is connected with the 5V power supply end, and the SEL B end and the RB end of the demodulator are both grounded.
4. The novel signal extraction device as claimed IN claim 3, wherein the filtering unit comprises a second operational amplifier, the 1OUT terminal of the second operational amplifier is connected with the 1 IN-terminal and is further connected with a fourth capacitor, the 1IN + terminal of the second operational amplifier is connected with a fifth resistor, and the other end of the fifth resistor is connected with a sixth resistor and is further connected with the other end of the fourth capacitor; the other end of the sixth resistor is an input end of the filtering unit and is connected with an output end of the phase-locked amplifying unit;
the 2IN + end of the second operational amplifier is connected with a seventh resistor, the other end of the seventh resistor is connected with an eighth resistor and a fifth capacitor, the other end of the eighth resistor is connected with the 1OUT end of the second operational amplifier, and the other end of the fifth capacitor is respectively connected with the 2OUT end and the 2 IN-end of the second operational amplifier; the output end of the second operational amplifier outputs the filtered square wave signal for the output end of the filtering unit;
and the VCC + end of the second operational amplifier is connected with the 5V power supply end, and the VCC-end is connected with the-5V power supply end.
5. The novel signal extraction device as claimed in claim 4, wherein the CSB terminal of the demodulator is connected to the cathode of a light emitting diode, the anode of the light emitting diode is connected to a ninth resistor, and the other end of the ninth resistor is grounded.
6. The novel signal extraction device according to claim 5, further comprising a power supply circuit, the power supply circuit being connected to the pre-amplification unit, the phase-locked amplification unit, and the filtering unit, respectively;
the power circuit comprises a rectifier bridge, a first three-terminal voltage regulator tube and a second three-terminal voltage regulator tube, wherein a first input end and a second input end of the rectifier bridge are respectively connected with a live wire and a zero line of 220V alternating current commercial power in a one-to-one mode;
the positive electrode output end of the rectifier bridge is connected with a sixth capacitor, the negative electrode output end of the rectifier bridge is connected with a seventh capacitor, the positive electrode of the sixth capacitor is connected with the positive electrode output end of the rectifier bridge, the negative electrode of the sixth capacitor is connected with the positive electrode of the seventh capacitor, and the negative electrode of the seventh capacitor is connected with the negative electrode output end of the rectifier bridge;
a VI end and a GND end of the first three-terminal voltage regulator tube are connected in parallel with an eighth capacitor, and a VI end and a GND end of the second three-terminal voltage regulator tube are connected in parallel with a ninth capacitor;
the VI end of the second three-terminal voltage-regulator tube is connected with the positive electrode output end of the rectifier bridge, the GND end of the second three-terminal voltage-regulator tube is connected with the GND end of the second three-terminal voltage-regulator tube and grounded, and the VI end of the second three-terminal voltage-regulator tube is connected with the negative electrode output end of the rectifier bridge;
the VO end of the first three-end voltage-stabilizing tube is the 5V power supply end, and the VOD end of the second three-end voltage-stabilizing tube is the-5V power supply end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122485386.8U CN215990728U (en) | 2021-10-15 | 2021-10-15 | Novel signal extraction device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122485386.8U CN215990728U (en) | 2021-10-15 | 2021-10-15 | Novel signal extraction device |
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| CN215990728U true CN215990728U (en) | 2022-03-08 |
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| CN202122485386.8U Expired - Fee Related CN215990728U (en) | 2021-10-15 | 2021-10-15 | Novel signal extraction device |
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- 2021-10-15 CN CN202122485386.8U patent/CN215990728U/en not_active Expired - Fee Related
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