CN204886926U - A circuit for inciting somebody to action voltage signal converts frequency signal into - Google Patents
A circuit for inciting somebody to action voltage signal converts frequency signal into Download PDFInfo
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- CN204886926U CN204886926U CN201520604441.2U CN201520604441U CN204886926U CN 204886926 U CN204886926 U CN 204886926U CN 201520604441 U CN201520604441 U CN 201520604441U CN 204886926 U CN204886926 U CN 204886926U
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- emitter follower
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Abstract
The utility model discloses a circuit for inciting somebody to action voltage signal converts frequency signal into, it is required for accomplishing circuit design, voltage signal after the piezoelectricity conversion can be will passed through and required frequency signal is converted to, include voltage input circuit and the VF converting circuit who is connected with it, VF converting circuit includes VF converter U2, VF converter U2's 7 foot connecting resistance R8, VF converter U2's 1 foot and 6 feet pass through resistance -capacitance circuit ground connection, and resistance -capacitance circuit is including parallelly connected each other electric capacity C3 and resistance R10, VF converter U2's 5 feet pass through resistance R11 to be connected with the positive supply, and VF converter U2's 5 feet pass through electric capacity C4 and are not connected with ground, VF converter U2's 3 feet pass through resistance R12 to be connected with the positive supply, and VF converter U2's 2 feet pass through resistance R13 ground connection, and VF converter U2's 8 feet are connected with the positive supply, and VF converter U2's 4 feet are not connected with ground.
Description
Technical field
The utility model relates to the technical field such as signal transacting, signal conversion, specifically, is a kind of circuit for voltage signal being converted to frequency signal.
Background technology
Signal transacting (signalprocessing), to various types of signal of telecommunication, carries out the general designation of the course of processing by the object of various expection and requirement.Analog is called to the process of analog signal, Digital Signal Processing is called to the process of digital signal.So-called " signal transacting ", will process the signal be recorded on certain media exactly, to extract the process of useful information, it is the general designation processing procedure such as extracting, convert, analyze, be comprehensive to signal.
Conversion, filtering, modulation, demodulation, detection and analysis of spectrum and estimation etc. is had in signal transacting is the most basic.Convert the Fourier transform of such as type, sine transform, cosine transform, Walsh transformation etc.; Filtering comprises high-pass filtering, low-pass filtering, bandpass filtering, Wiener filtering, Kalman filtering, linear filtering, nonlinear filtering and adaptive-filtering etc.; Analysis of spectrum aspect comprises the analysis of deterministic signal and the analysis of random signal, usually studies the analysis of the most generally random signal, and also claim Analysis of Statistical Signal or estimation, heterogeneous linear Power estimation and nonlinear spectral are estimated again usually for it; Power estimation has periodogram estimation, Maximum Entropy Spectral Estimation etc.; Complicated along with signal type, when requiring the signal analyzed can not meet the condition such as Gaussian Profile, non-minimum phase, has again the method for high order equilibrium.High order equilibrium can provide the phase information of signal, non-gaussian category information and nonlinear transformations; Adaptive-filtering is also a large field of application study with balanced.Adaptive-filtering comprises horizontal LMS adaptive-filtering, lattice adaptive-filtering, adaptive cancellation filtering, and adaptive equalization etc.In addition, Array Signal Processing etc. is also had for array signal.
Signal transacting is basic theory and the technology of telecommunications.Its mathematical theory has theory of equation, the theory of functions, number theory, Stochastic Process Theory, least square method and Optimum Theory etc., and its technology pillar is circuit analysis, synthesis and electronic computer technology.Signal transacting and contemporary pattern recognition, artificial intelligence, nerve net calculate and multimedia signal processing etc. has close relationship, and it is closely linked basic theory and engineer applied.Therefore signal transacting is an existing complicated mathematical analysis background, has again the subject of wide practical engineering prospect.
Signal transacting develops centered by Digital Signal Processing.This is because signal generally can represent by digitized forms, and digitized signal can realize calculating or process by software on electronic computer, like this, no matter how complex calculations, as long as mathematically can analyze, optimum solving can be obtained, just can simulate on electronic computer.If computational speed is suitably fast, can also complete in real time by ultra-large special digital signal transacting lamination.Therefore, Digital Signal Processing becomes one of subject the most dynamic in Information Technology Development.
Utility model content
The purpose of this utility model is as completing circuit design, can the voltage signal after piezoelectricity transforms be converted to required frequency signal, and design a kind of circuit for voltage signal being converted to frequency signal especially, whole circuit has the feature such as design science, applying flexible.
The utility model is achieved through the following technical solutions: a kind of circuit for voltage signal being converted to frequency signal, comprise voltage input circuit and be attached thereto the V/F change-over circuit connect, described V/F change-over circuit comprises V/F transducer U2, the 7 pin contact resistance R8 of described V/F transducer U2; 1 pin of described V/F transducer U2 and 6 pin are by resistance-capacitance circuit ground connection, and described resistance-capacitance circuit comprises electric capacity C3 parallel with one another and resistance R10; 5 pin of described V/F transducer U2 are connected with positive supply by resistance R11, and 5 pin of V/F transducer U2 are connected to ground by electric capacity C4; 3 pin of described V/F transducer U2 are connected with positive supply by resistance R12, and 2 pin of described V/F transducer U2 are by resistance R13 ground connection, and 8 pin of described V/F transducer U2 are connected with positive supply, and 4 pin of V/F transducer U2 are connected to ground.
For better realizing the utility model, further, for the voltage signal after piezoelectricity transforms is input in V/F change-over circuit, described voltage input circuit comprises emitter follower U1, the output of described emitter follower U1 is connected with 7 pin of V/F transducer U2 by RC pi type filter, the input of described RC pi type filter also by resistance R9 ground connection, is connected to RC parallel circuits between the negative input of described emitter follower U1 and output.
For better realizing the utility model, further, be the bias current impact that 6 pin of offsetting V/F transducer cause, reduce frequency error, be provided with following structure especially: also comprise resistance R7, described resistance R7 connects the output of emitter follower U1 and the input of RC pi type filter respectively.
Further, for better realizing the utility model, also comprise the peripheral input circuit of emitter follower U1, described peripheral input circuit comprises the resistance R3, the resistance R5 that are connected to emitter follower U1 electrode input end, and being connected to resistance R1, resistance R2, the resistance R4 of emitter follower U1 negative input, described emitter follower U1 is also connected with negative supply with positive supply respectively; Described resistance R2 and resistance R5 all ground connection, described resistance R1 connects positive supply.
Further, for better realizing the utility model, can provide suitable generating positive and negative voltage, being arranged to following structure especially: described positive supply is+9V, described negative supply is-9V.
The utility model compared with prior art, has the following advantages and beneficial effect:
(1) the utility model is completing circuit design, and can convert the voltage signal after piezoelectricity transforms to required frequency signal, whole circuit has the feature such as design science, applying flexible.
(2) the utility model is when carrying out signal transacting, can reduce frequency error to greatest extent, reduces gain error.
(3) resistance-capacitance circuit that the utility model is connected to V/F transducer 6 pin can produce hysteresis effect, can obtain the good linearity for V/F change-over circuit.
Accompanying drawing explanation
Fig. 1 is circuit theory diagrams of the present utility model.
Embodiment
Below in conjunction with embodiment, the utility model is described in further detail, but execution mode of the present utility model is not limited thereto.
Embodiment 1:
For completing circuit design, can the voltage signal after piezoelectricity transforms be converted to required frequency signal, and design a kind of circuit for voltage signal being converted to frequency signal especially, as shown in Figure 1, comprise voltage input circuit and be attached thereto the V/F change-over circuit connect, described V/F change-over circuit comprises V/F transducer U2, when specific design, V/F transducer U2 can select LM331, the 7 pin contact resistance R8 of described V/F transducer U2; 1 pin of described V/F transducer U2 and 6 pin are by resistance-capacitance circuit ground connection, and described resistance-capacitance circuit comprises electric capacity C3 parallel with one another and resistance R10; 5 pin of described V/F transducer U2 are connected with positive supply by resistance R11, and 5 pin of V/F transducer U2 are connected to ground by electric capacity C4; 3 pin of described V/F transducer U2 are connected with positive supply by resistance R12,2 pin of described V/F transducer U2 are by resistance R13 ground connection, for the gain error of minimizing LM331 with by the deviation caused by resistance R10 and resistance R11, resistance R13 selects the resistance of 51K, 8 pin of described V/F transducer U2 are connected with positive supply, and 4 pin of V/F transducer U2 are connected to ground.
Wherein, V/F change-over circuit, is converted to the treatment circuit of frequency signal by voltage signal.
Embodiment 2:
The present embodiment is at the enterprising one-step optimization in the basis of above-described embodiment, for better realizing the utility model, further, for the voltage signal after piezoelectricity transforms is input in V/F change-over circuit, as shown in Figure 1, described voltage input circuit comprises emitter follower U1, the output of described emitter follower U1 is connected with 7 pin of V/F transducer U2 by RC pi type filter, RC pi type filter is made up of resistance R8 and electric capacity C1 and electrochemical capacitor C2, resistance R13 selects the resistance of 51K also can reduce deviation caused by electrochemical capacitor C2, electric capacity C1 mainly strobes, the input of described RC pi type filter is also by resistance R9 ground connection, be connected to RC parallel circuits between the negative input of described emitter follower U1 and output.
When design ap-plication, when 6 pin of V/F transducer U2 and the RC time constant of 7 pin match, the Spline smoothing of input voltage will cause the Spline smoothing of output frequency, during design, the capacitance of electric capacity C3 can much larger than the capacitance of electric capacity C1, design like this, when the Spline smoothing of input voltage can cause the moment of output frequency to stop; The resistance of 6 pin of V/F transducer U2 and electric capacity can bad student's hysteresis effects, to obtain the good linearity.
Embodiment 3:
The present embodiment is at the enterprising one-step optimization in the basis of above-mentioned any embodiment, for better realizing the utility model, further, as shown in Figure 1, for the bias current impact that 6 pin of offsetting V/F transducer cause, reduce frequency error, be provided with following structure especially: also comprise resistance R7, described resistance R7 connects the output of emitter follower U1 and the input of RC pi type filter respectively.
Embodiment 4:
The present embodiment is at the enterprising one-step optimization in the basis of above-described embodiment, further, for better realizing the utility model, as shown in Figure 1, also comprise the peripheral input circuit of emitter follower U1, described peripheral input circuit comprises the resistance R3, the resistance R5 that are connected to emitter follower U1 electrode input end, and is connected to resistance R1, resistance R2, the resistance R4 of emitter follower U1 negative input, and described emitter follower U1 is also connected with negative supply with positive supply respectively; Described resistance R2 and resistance R5 all ground connection, described resistance R1 connects positive supply.
Embodiment 5:
The present embodiment is at the enterprising one-step optimization in the basis of above-described embodiment, further, for better realizing the utility model, can provide suitable generating positive and negative voltage, and as shown in Figure 1, be arranged to following structure especially: described positive supply is+9V, described negative supply is-9V.
The above; it is only preferred embodiment of the present utility model; not do any pro forma restriction to the utility model, every any simple modification, equivalent variations done above embodiment according to technical spirit of the present utility model, all falls within protection range of the present utility model.
Claims (5)
1. for voltage signal being converted to a circuit for frequency signal, it is characterized in that: comprise voltage input circuit and be attached thereto the V/F change-over circuit connect, described V/F change-over circuit comprises V/F transducer U2, the 7 pin contact resistance R8 of described V/F transducer U2; 1 pin of described V/F transducer U2 and 6 pin are by resistance-capacitance circuit ground connection, and described resistance-capacitance circuit comprises electric capacity C3 parallel with one another and resistance R10; 5 pin of described V/F transducer U2 are connected with positive supply by resistance R11, and 5 pin of V/F transducer U2 are connected to ground by electric capacity C4; 3 pin of described V/F transducer U2 are connected with positive supply by resistance R12, and 2 pin of described V/F transducer U2 are by resistance R13 ground connection, and 8 pin of described V/F transducer U2 are connected with positive supply, and 4 pin of V/F transducer U2 are connected to ground.
2. a kind of circuit for voltage signal being converted to frequency signal according to claim 1, it is characterized in that: described voltage input circuit comprises emitter follower U1, the output of described emitter follower U1 is connected with 7 pin of V/F transducer U2 by RC pi type filter, the input of described RC pi type filter also by resistance R9 ground connection, is connected to RC parallel circuits between the negative input of described emitter follower U1 and output.
3. a kind of circuit for voltage signal being converted to frequency signal according to claim 1 and 2, is characterized in that: also comprise resistance R7, and described resistance R7 connects the output of emitter follower U1 and the input of RC pi type filter respectively.
4. a kind of circuit for voltage signal being converted to frequency signal according to claim 3, it is characterized in that: the peripheral input circuit also comprising emitter follower U1, described peripheral input circuit comprises the resistance R3, the resistance R5 that are connected to emitter follower U1 electrode input end, and being connected to resistance R1, resistance R2, the resistance R4 of emitter follower U1 negative input, described emitter follower U1 is also connected with negative supply with positive supply respectively; Described resistance R2 and resistance R5 all ground connection, described resistance R1 connects positive supply.
5. a kind of circuit for voltage signal being converted to frequency signal according to claim 4, it is characterized in that: described positive supply is+9V, described negative supply is-9V.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520604441.2U CN204886926U (en) | 2015-08-12 | 2015-08-12 | A circuit for inciting somebody to action voltage signal converts frequency signal into |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520604441.2U CN204886926U (en) | 2015-08-12 | 2015-08-12 | A circuit for inciting somebody to action voltage signal converts frequency signal into |
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| Publication Number | Publication Date |
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| CN204886926U true CN204886926U (en) | 2015-12-16 |
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| CN201520604441.2U Expired - Fee Related CN204886926U (en) | 2015-08-12 | 2015-08-12 | A circuit for inciting somebody to action voltage signal converts frequency signal into |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105099452A (en) * | 2015-08-12 | 2015-11-25 | 成都易思科科技有限公司 | Circuit for converting voltage signal into frequency signal |
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2015
- 2015-08-12 CN CN201520604441.2U patent/CN204886926U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105099452A (en) * | 2015-08-12 | 2015-11-25 | 成都易思科科技有限公司 | Circuit for converting voltage signal into frequency signal |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151216 Termination date: 20160812 |
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| CF01 | Termination of patent right due to non-payment of annual fee |