CN104467824A - Detector circuit based on phase-locked loop - Google Patents
Detector circuit based on phase-locked loop Download PDFInfo
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- CN104467824A CN104467824A CN201410665256.4A CN201410665256A CN104467824A CN 104467824 A CN104467824 A CN 104467824A CN 201410665256 A CN201410665256 A CN 201410665256A CN 104467824 A CN104467824 A CN 104467824A
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Abstract
The invention discloses a detector circuit based on a phase-locked loop. The detector circuit mainly comprises a sampling circuit, a voltage comparison circuit connected with the sampling circuit, and a conversion circuit connected with the voltage comparison circuit. The detector circuit is characterized in that a phase-locked loop circuit is arranged at the output end of the conversion circuit; the phase-locked loop circuit is composed of a triode VT1, a triode VT2, a triode VT3, a capacitor C4, a resistor R10, a capacitor C5 and the like, wherein the positive electrode of the capacitor C4 is connected with the conversion circuit, the negative electrode of the capacitor C4 is connected with the base electrode of the triode VT1, one end of the resistor R10 is connected with the collector electrode of the triode VT1, the other end of the resistor R10 passes a resistor R9 and a resistor R11 and then is connected with the collector electrode of the triode VT1, the negative electrode of the capacitor C5 passes a resistor R13 and a resistor R12 and then is connected with the collector electrode of the triode VT2, and the positive electrode of the capacitor C5 is connected with the emitting electrode of the triode VT1. The phase-locked loop circuit is arranged, the frequency range of a detector can be wider, and frequency can be more stable.
Description
Technical field
The present invention relates to a kind of detector circuit, specifically refer to a kind of detector circuit based on phase-locked loop.
Background technology
Wave detector can detect certain useful information in fluctuation signal, and it is for identifying the device that ripple, oscillator signal exist or change, and also can be used for extracting the information entrained by the external world.Current wave detector is widely used, and the noise etc. as can be used for geological prospecting and engineering survey, when running for measurement equipment, has brought very large facility.
But its frequency range of wave detector is on the market wide at present, and frequency stability is not high, and very everybody limits the scope of application of wave detector for this.
Summary of the invention
The object of the invention is to overcome existing wave detector frequency range wideless, and the defect that frequency stability is not high, provide a kind of frequency range wide, the detector circuit based on phase-locked loop that frequency stability is high.
Object of the present invention is achieved through the following technical solutions: a kind of detector circuit based on phase-locked loop, mainly comprise sample circuit, the voltage comparator circuit be connected with sample circuit, the change-over circuit be connected with voltage comparator circuit, is also provided with phase-locked loop circuit at change-over circuit output; Described phase-locked loop circuit is by triode VT1, triode VT2, triode VT3, the electric capacity C4 that positive pole is connected with change-over circuit, negative pole is connected with the base stage of triode VT1, the resistance R10 that one end is connected with the collector electrode of triode VT1, the other end is connected with the collector electrode of triode VT1 after resistance R11 through resistance R9, the electric capacity C5 that negative pole is connected with the collector electrode of triode VT2 after resistance R12 through resistance R13, positive pole is connected with the emitter of triode VT1, and the electric capacity C6 that negative pole is connected with its positive pole after resistance R14 through resistance R15 forms; The collector electrode of described triode VT3 is connected with the negative pole of electric capacity C6, emitter is connected with the emitter of triode VT2, base stage is connected with the negative pole of electric capacity C5, the base stage of triode VT2 is connected with the positive pole of electric capacity C6, emitter is connected with the collector electrode of triode VT1, resistance R10 is connected with the negative pole of electric capacity C4 with the tie point of resistance R9, and resistance R15 is connected with the tie point of resistance R13 and resistance R12 and the tie point of resistance R11 and resistance R9 mutually with the tie point of resistance R14.
Described sample circuit is by amplifier P, one end is connected with the positive pole of amplifier P, the other end is as the resistance R1 of signal input part, one end is connected with the positive pole of amplifier P, the electric capacity C1 of other end ground connection, the resistance R2 be in parallel with electric capacity C1, be serially connected in the resistance R4 between the negative pole of amplifier P and output stage, and one end is connected with the negative pole of amplifier P, the resistance R3 of other end ground connection forms; The output stage of described amplifier P is also connected with voltage comparator circuit.
Described voltage comparator circuit is by comparable chip U1, one end is connected with the IN2 pin of comparable chip U1, the resistance R6 that the other end is connected with the V+ pin of comparable chip U1 with change-over circuit simultaneously, one end is connected with the IN2 pin of comparable chip U1, the resistance R7 that the other end is then connected with the OUT pin of comparable chip U1, one end is connected with the output of amplifier P, the resistance R5 that the other end is then connected with the IN1 pin of comparable chip U1, and one end is connected with the V-pin of comparable chip U1, the other end forms with the electric capacity C2 that the GND pin of comparable chip U1 is connected with change-over circuit simultaneously, the V+ pin of described comparable chip U1 is connected with external power source, and its OUT pin is also connected with change-over circuit, GND pin ground connection.
Described change-over circuit is by conversion chip U2, and electric capacity C3, resistance R8 form; One end of resistance R8 is connected with the OUT pin of comparable chip U1, the other end is connected with the IN pin of conversion chip U2, and electric capacity C3 is then serially connected between the NON pin of conversion chip U2 and OUT pin; The VCC+ pin of described conversion chip U2 is connected with the V+ pin of comparable chip U1, and its VCC-pin is connected with the GND pin of comparable chip U1, and its OUT pin is then connected with the positive pole of electric capacity C4.
The present invention comparatively prior art compares, and has the following advantages and beneficial effect:
(1) the present invention is provided with phase-locked loop circuit, and it can make the frequency range of wave detector wider, and frequency is more stable.
(2) comparison circuit of the present invention, can compare process to the signal detected, simultaneously can the negative peak of clearly recognition detection signal, and the situation of distortion appears in the signal exported when avoiding detection signal to there is negative peak.
Accompanying drawing explanation
Fig. 1 is overall structure schematic diagram of the present invention.
Embodiment
Below in conjunction with embodiment, the present invention is described in further detail, but embodiments of the present invention are not limited to this.
Embodiment
As shown in Figure 1, the detector circuit based on phase-locked loop of the present invention, mainly comprises sample circuit, the voltage comparator circuit be connected with sample circuit, the change-over circuit be connected with voltage comparator circuit.In order to realize object of the present invention, be also provided with phase-locked loop circuit at change-over circuit output.
Wherein, phase-locked loop circuit is by triode VT1, triode VT2, triode VT3, the electric capacity C4 that positive pole is connected with change-over circuit, negative pole is connected with the base stage of triode VT1, the resistance R10 that one end is connected with the collector electrode of triode VT1, the other end is connected with the collector electrode of triode VT1 after resistance R11 through resistance R9, the electric capacity C5 that negative pole is connected with the collector electrode of triode VT2 after resistance R12 through resistance R13, positive pole is connected with the emitter of triode VT1, and the electric capacity C6 that negative pole is connected with its positive pole after resistance R14 through resistance R15 forms; The collector electrode of described triode VT3 is connected with the negative pole of electric capacity C6, emitter is connected with the emitter of triode VT2, base stage is connected with the negative pole of electric capacity C5, the base stage of triode VT2 is connected with the positive pole of electric capacity C6, emitter is connected with the collector electrode of triode VT1, resistance R10 is connected with the negative pole of electric capacity C4 with the tie point of resistance R9, and resistance R15 is connected with the tie point of resistance R13 and resistance R12 and the tie point of resistance R11 and resistance R9 mutually with the tie point of resistance R14.Phase-locked loop circuit can make the frequency range of wave detector more extensively, more stable.
Sample circuit to be collected after outside signal Signal transmissions to voltage comparator circuit, it is by amplifier P, one end is connected with the positive pole of amplifier P, the other end is as the resistance R1 of signal input part, one end is connected with the positive pole of amplifier P, the electric capacity C1 of other end ground connection, the resistance R2 be in parallel with electric capacity C1, be serially connected in the resistance R4 between the negative pole of amplifier P and output stage, and one end is connected with the negative pole of amplifier P, the resistance R3 of other end ground connection forms; The output stage of described amplifier P is also connected with voltage comparator circuit.
Described voltage comparator circuit is by comparable chip U1, one end is connected with the IN2 pin of comparable chip U1, the resistance R6 that the other end is connected with the V+ pin of comparable chip U1 with change-over circuit simultaneously, one end is connected with the IN2 pin of comparable chip U1, the resistance R7 that the other end is then connected with the OUT pin of comparable chip U1, one end is connected with the output of amplifier P, the resistance R5 that the other end is then connected with the IN1 pin of comparable chip U1, and one end is connected with the V-pin of comparable chip U1, the other end forms with the electric capacity C2 that the GND pin of comparable chip U1 is connected with change-over circuit simultaneously, the V+ pin of described comparable chip U1 is connected with external power source, and its OUT pin is also connected with change-over circuit, GND pin ground connection.Guarantee implementation result, this comparable chip is preferably LM311 cake core to realize.
Described change-over circuit is by conversion chip U2, and electric capacity C3, resistance R8 form; One end of resistance R8 is connected with the OUT pin of comparable chip U1, the other end is connected with the IN pin of conversion chip U2, and electric capacity C3 is then serially connected between the NON pin of conversion chip U2 and OUT pin; The VCC+ pin of described conversion chip U2 is connected with the V+ pin of comparable chip U1, and its VCC-pin is connected with the GND pin of comparable chip U1, and its OUT pin is then connected with the positive pole of electric capacity C4.Change-over circuit exports the signal that comparison circuit inputs after treatment again, people can be judged by the signal exported detect state to picture.For guaranteeing result of use, this conversion chip U2 then preferentially adopts NE555 chip to realize.
As mentioned above, just well the present invention can be implemented.
Claims (4)
1. based on a detector circuit for phase-locked loop, mainly comprise sample circuit, the voltage comparator circuit be connected with sample circuit, the change-over circuit be connected with voltage comparator circuit, is characterized in that: be also provided with phase-locked loop circuit at change-over circuit output; Described phase-locked loop circuit is by triode VT1, triode VT2, triode VT3, the electric capacity C4 that positive pole is connected with change-over circuit, negative pole is connected with the base stage of triode VT1, the resistance R10 that one end is connected with the collector electrode of triode VT1, the other end is connected with the collector electrode of triode VT1 after resistance R11 through resistance R9, the electric capacity C5 that negative pole is connected with the collector electrode of triode VT2 after resistance R12 through resistance R13, positive pole is connected with the emitter of triode VT1, and the electric capacity C6 that negative pole is connected with its positive pole after resistance R14 through resistance R15 forms; The collector electrode of described triode VT3 is connected with the negative pole of electric capacity C6, emitter is connected with the emitter of triode VT2, base stage is connected with the negative pole of electric capacity C5, the base stage of triode VT2 is connected with the positive pole of electric capacity C6, emitter is connected with the collector electrode of triode VT1, resistance R10 is connected with the negative pole of electric capacity C4 with the tie point of resistance R9, and resistance R15 is connected with the tie point of resistance R13 and resistance R12 and the tie point of resistance R11 and resistance R9 mutually with the tie point of resistance R14.
2. a kind of detector circuit based on phase-locked loop according to claim 1, it is characterized in that: described sample circuit is by amplifier P, one end is connected with the positive pole of amplifier P, the other end is as the resistance R1 of signal input part, one end is connected with the positive pole of amplifier P, the electric capacity C1 of other end ground connection, the resistance R2 be in parallel with electric capacity C1, be serially connected in the resistance R4 between the negative pole of amplifier P and output stage, and one end is connected with the negative pole of amplifier P, the resistance R3 of other end ground connection forms; The output stage of described amplifier P is also connected with voltage comparator circuit.
3. a kind of detector circuit based on phase-locked loop according to claim 2, it is characterized in that: described voltage comparator circuit is by comparable chip U1, one end is connected with the IN2 pin of comparable chip U1, the resistance R6 that the other end is connected with the V+ pin of comparable chip U1 with change-over circuit simultaneously, one end is connected with the IN2 pin of comparable chip U1, the resistance R7 that the other end is then connected with the OUT pin of comparable chip U1, one end is connected with the output of amplifier P, the resistance R5 that the other end is then connected with the IN1 pin of comparable chip U1, and one end is connected with the V-pin of comparable chip U1, the other end forms with the electric capacity C2 that the GND pin of comparable chip U1 is connected with change-over circuit simultaneously, the V+ pin of described comparable chip U1 is connected with external power source, and its OUT pin is also connected with change-over circuit, GND pin ground connection.
4. a kind of detector circuit based on phase-locked loop according to claim 3, is characterized in that: described change-over circuit is by conversion chip U2, and electric capacity C3, resistance R8 form; One end of resistance R8 is connected with the OUT pin of comparable chip U1, the other end is connected with the IN pin of conversion chip U2, and electric capacity C3 is then serially connected between the NON pin of conversion chip U2 and OUT pin; The VCC+ pin of described conversion chip U2 is connected with the V+ pin of comparable chip U1, and its VCC-pin is connected with the GND pin of comparable chip U1, and its OUT pin is then connected with the positive pole of electric capacity C4.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410665256.4A CN104467824A (en) | 2014-11-19 | 2014-11-19 | Detector circuit based on phase-locked loop |
| CN201510284288.4A CN104852730A (en) | 2014-11-19 | 2015-05-28 | A phase locking type detector based on pulse amplifying trigger circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410665256.4A CN104467824A (en) | 2014-11-19 | 2014-11-19 | Detector circuit based on phase-locked loop |
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| Publication Number | Publication Date |
|---|---|
| CN104467824A true CN104467824A (en) | 2015-03-25 |
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Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410665256.4A Pending CN104467824A (en) | 2014-11-19 | 2014-11-19 | Detector circuit based on phase-locked loop |
| CN201510284288.4A Withdrawn CN104852730A (en) | 2014-11-19 | 2015-05-28 | A phase locking type detector based on pulse amplifying trigger circuit |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510284288.4A Withdrawn CN104852730A (en) | 2014-11-19 | 2015-05-28 | A phase locking type detector based on pulse amplifying trigger circuit |
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| CN (2) | CN104467824A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104852730A (en) * | 2014-11-19 | 2015-08-19 | 成都冠深科技有限公司 | A phase locking type detector based on pulse amplifying trigger circuit |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU2002322203A1 (en) * | 2001-07-18 | 2003-03-03 | Vrije Universiteit Brussel (Vub) | Line equalizer with differentiating circuit and hysteresis decoder |
| CN103760175A (en) * | 2014-02-08 | 2014-04-30 | 四川环龙技术织物有限公司 | Circuit system for measuring humidity of papermaking felt through microwave technique |
| CN104467824A (en) * | 2014-11-19 | 2015-03-25 | 成都创图科技有限公司 | Detector circuit based on phase-locked loop |
| CN104470116A (en) * | 2014-11-28 | 2015-03-25 | 成都措普科技有限公司 | Mixed type grid driving system |
-
2014
- 2014-11-19 CN CN201410665256.4A patent/CN104467824A/en active Pending
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2015
- 2015-05-28 CN CN201510284288.4A patent/CN104852730A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104852730A (en) * | 2014-11-19 | 2015-08-19 | 成都冠深科技有限公司 | A phase locking type detector based on pulse amplifying trigger circuit |
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| Publication number | Publication date |
|---|---|
| CN104852730A (en) | 2015-08-19 |
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Application publication date: 20150325 |