CN110442182A - A kind of control method of conditioning circuit and conditioning circuit - Google Patents
A kind of control method of conditioning circuit and conditioning circuit Download PDFInfo
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- CN110442182A CN110442182A CN201910751477.6A CN201910751477A CN110442182A CN 110442182 A CN110442182 A CN 110442182A CN 201910751477 A CN201910751477 A CN 201910751477A CN 110442182 A CN110442182 A CN 110442182A
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05F—SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
- G05F1/00—Automatic systems in which deviations of an electric quantity from one or more predetermined values are detected at the output of the system and fed back to a device within the system to restore the detected quantity to its predetermined value or values, i.e. retroactive systems
- G05F1/10—Regulating voltage or current
- G05F1/625—Regulating voltage or current wherein it is irrelevant whether the variable actually regulated is ac or dc
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Abstract
This application provides the control method of a kind of conditioning circuit and conditioning circuit, conditioning circuit includes: the first conditioning circuit, the second conditioning circuit, digital signal processor；First conditioning circuit, the second conditioning circuit, to analog signal conditioner to be conditioned, the first conditioned signal, the second conditioned signal are obtained, digital signal processor is input to, the first conditioning circuit input signal amplitude range is identical as the corresponding amplitude range of analog signal to be conditioned；Second conditioning circuit input signal amplitude range is the first preset percentage that analog signal to be conditioned corresponds to amplitude range；If detecting in digital signal processor, the amplitude of analog signal to be conditioned corresponds to the first preset percentage of amplitude range beyond analog signal to be conditioned, samples to the first conditioned signal；If the amplitude of analog signal to be conditioned corresponds to the first preset percentage of amplitude range without departing from analog signal to be conditioned, the second conditioned signal is sampled, improves the resolution ratio for treating the sampling of conditioned signal gamut.
Description
Technical field
This application involves integral control circuit technical fields, more particularly, to the control of a kind of conditioning circuit and conditioning circuit
Method.
Background technique
The digital control circuit of power electronics, be convert analog signals into digital signal, but due to digital signal at
The voltage for managing the input port of device has maximum value limitation, for analog signal to be processed, needs the simulation to be processed first
Signal is improved by digital conditioning circuit, the corresponding conditioned signal of analog signal to be processed is obtained, so that this is to be processed
Analog signal by digital conditioning circuit processing after meet digital signal processor input port allow input voltage model
It encloses, conditioned signal input digital signal processor is then subjected to operation and processing.
But when analog signal range to be processed is larger, if equal to each of analog signal to be processed signal
Same treatment is carried out, then the small analog signal of sampled value passes through digital signal processor operation in analog signal to be processed
Afterwards, resolution ratio is lower, general digital signal processor by choosing more high conversion digit or to existing digital signal at
Reason device is extended out the chip of more high conversion digit, is adjusted the low problem of resolution ratio, but is chosen the number of more high conversion digit
The case where signal processor will lead to conversion digit using insufficient, generate the wasting of resources, and to existing digital signal at
Reason device is extended out the chip of more high conversion digit, so that increased costs, it is therefore desirable to a kind of conditioning circuit of gamut sampling.
Summary of the invention
In view of this, a kind of control method for being designed to provide conditioning circuit and conditioning circuit of the application, to improve
Treat the sampling resolution that conditioned signal carries out gamut sampling.
In a first aspect, the embodiment of the present application provides a kind of conditioning circuit, comprising: the first conditioning circuit, the second conditioning electricity
Road and digital signal processor；First conditioning circuit, second conditioning circuit respectively with the Digital Signal Processing
Device electrical connection, first conditioning circuit, the second conditioning circuit access analog signal to be conditioned；
First conditioning circuit obtains the first conditioned signal for improving the analog signal to be conditioned, and
First conditioned signal is input to the digital signal processor, the amplitude range of the first conditioning circuit input signal
Amplitude range corresponding with the analog signal to be conditioned is identical；
Second conditioning circuit obtains the second conditioned signal for improving the analog signal to be conditioned, and
Second conditioned signal is input to the digital signal processor, the amplitude range of the second conditioning circuit input signal
For the first preset percentage of the corresponding amplitude range of the analog signal to be conditioned；
The digital signal processor, for working as the amplitude for detecting the analog signal to be conditioned beyond described to be conditioned
When the first preset percentage of the corresponding amplitude range of analog signal, first conditioned signal is sampled；When detecting
The amplitude of the analog signal to be conditioned without departing from the corresponding amplitude range of the analog signal to be conditioned first default hundred
Point than when, second conditioned signal is sampled.
In the embodiment of the application, further includes: third conditioning circuit, the third conditioning circuit and the digital signal
Processor electrical connection, the third conditioning circuit access analog signal to be conditioned；
The third conditioning circuit obtains third conditioned signal for improving the analog signal to be conditioned, and
The third conditioned signal is input to the digital signal processor, the amplitude range of the third conditioning circuit input signal
For the second preset percentage of the corresponding amplitude range of the analog signal to be conditioned, second preset percentage is less than described
First preset percentage；
The digital signal processor, comprising: amplitude judging unit, the first sampling unit, the second sampling unit and
Three sampling units, wherein
The amplitude judging unit, for exceeding the mould to be conditioned when the amplitude for detecting the analog signal to be conditioned
When the first preset percentage of the quasi- corresponding amplitude range of signal, first sampling unit is notified；
When the amplitude for detecting the analog signal to be conditioned exceeds the corresponding amplitude range of the analog signal to be conditioned
The second preset percentage, but without departing from the first preset percentage of the corresponding amplitude range of the analog signal to be conditioned
When, notify second sampling unit；
When detecting the amplitude of the analog signal to be conditioned without departing from the corresponding amplitude of the analog signal to be conditioned
When the second preset percentage of range, the third sampling unit is notified；
First sampling unit, for being sampled to first conditioned signal；
Second sampling unit, for being sampled to second conditioned signal；
The third sampling unit, for being sampled to the third conditioned signal.
In the embodiment of the application, further includes: first switch circuit, the first switch circuit is respectively with described second
Conditioning circuit, digital signal processor electrical connection；
The first switch circuit, after receiving provisioning instruction, by the second conditioning of second conditioning circuit output
Signal is input to second sampling unit in the digital signal processor, wherein the first switch circuit original state
It is in off state.
In the embodiment of the application, further includes: second switch circuit, the second switch circuit respectively with the third
Conditioning circuit, digital signal processor electrical connection；
The second switch circuit, after receiving the provisioning instruction, by the third of third conditioning circuit output
Conditioned signal is input to the third sampling unit in the digital signal processor, wherein the second switch circuit is initial
State is in off state.
In the embodiment of the application, the amplitude judging unit in the digital signal processor is also used to when inspection
The amplitude for measuring the analog signal to be conditioned exceeds the second default hundred of the corresponding amplitude range of the analog signal to be conditioned
Point ratio, but when without departing from the first preset percentage of the corresponding amplitude range of the analog signal to be conditioned, it is opened described in transmission
It is logical to instruct to the first switch circuit.
In the embodiment of the application, the amplitude judging unit in the digital signal processor is also used to when inspection
The amplitude of the analog signal to be conditioned is measured without departing from the corresponding amplitude range of the analog signal to be conditioned second is pre-
If when percentage, sending the provisioning instruction to the second switch circuit.
In the embodiment of the application, first conditioning circuit includes: first resistor, second resistance, 3rd resistor,
Four resistance, the 5th resistance and the first amplifier；
One end connection acquisition device of the first resistor, the other end connection 3rd resistor of the first resistor,
And the first end of first amplifier；
One end of the second resistance connects the acquisition device, the other end connection of the second resistance the 4th electricity
The second end of resistance and first amplifier；
4th end of the other end of the 3rd resistor and first amplifier is separately connected the one of the 5th resistance
End；
The other end of 4th resistance is grounded；
The 5th of first amplifier terminates default high voltage, and the third termination of first amplifier presets low electricity
Pressure, wherein the high voltage is identical as the numerical value of the low-voltage；
The other end of 5th resistance connects the digital signal processor.
In the embodiment of the application, second conditioning circuit includes: the 6th resistance, the 7th resistance, the 8th resistance,
Nine resistance, the tenth resistance and the second amplifier；
One end of 6th resistance connects the acquisition device, the other end connection of the 6th resistance the 8th electricity
The first end of resistance and second amplifier；
One end of 7th resistance connects the acquisition device, the other end connection of the 7th resistance the 9th electricity
The second end of resistance and second amplifier；
4th end of the other end of the 8th resistance and second amplifier is separately connected the one of the tenth resistance
End；
The other end of 9th resistance is grounded；
The 5th termination high voltage of second amplifier, the third of second amplifier terminate the low electricity
Pressure；
The other end of tenth resistance connects the first switch circuit.
In the embodiment of the application, the first resistor, the second resistance, the 6th resistance, the 7th electricity
The resistance value of resistance is identical, the 5th resistance, the resistance value of the tenth resistance are identical, the 3rd resistor, the 4th resistance
Resistance value is identical, and the 8th resistance, the resistance value of the 9th resistance are identical, and the resistance of the 3rd resistor, the 4th resistance
It is worth the width with the proportionate relationship of the resistance value of the 8th resistance, the 9th resistance according to the first conditioning circuit input signal
The amplitude range of value range and the second conditioning circuit input signal is configured.
Second aspect, the embodiment of the present application also provide a kind of control method of conditioning circuit, which comprises
Analog signal to be conditioned is improved by the first conditioning circuit, obtains the first conditioned signal, and by described
One conditioned signal is input to digital signal processor, the amplitude range of the first conditioning circuit input signal with it is described to be conditioned
The corresponding amplitude range of analog signal is identical；
The analog signal to be conditioned is improved by the second conditioning circuit, obtains the second conditioned signal, and by institute
It states the second conditioned signal and is input to the digital signal processor, the amplitude range of the second conditioning circuit input signal is institute
State the first preset percentage of the corresponding amplitude range of analog signal to be conditioned；
When the amplitude for detecting the analog signal to be conditioned exceeds the corresponding amplitude range of the analog signal to be conditioned
The first preset percentage when, first conditioned signal is sampled；When the width for detecting the analog signal to be conditioned
When being worth the first preset percentage without departing from the corresponding amplitude range of the analog signal to be conditioned, second conditioning is believed
It number is sampled.
The embodiment of the present application provides a kind of conditioning circuit, by according to the corresponding amplitude range of analog signal to be conditioned,
The amplitude range of the input signal of first conditioning circuit, the second conditioning circuit is set, and then by comparing analog signal to be conditioned
Amplitude amplitude range corresponding with analog signal to be conditioned the first preset percentage, determine the conditioned signal that is sampled,
When conditioned signal progress gamut sampling is treated in realization, sampling resolution is improved.
Other feature and advantage of the application will illustrate in the following description, also, partly become from specification
It obtains it is clear that being understood and implementing the application.The purpose of the application and other advantages are in specification, claims
And specifically noted structure is achieved and obtained in attached drawing.
To enable the above objects, features, and advantages of the application to be clearer and more comprehensible, preferred embodiment is cited below particularly, and cooperate
Appended attached drawing, is described in detail below.
Detailed description of the invention
Technical solution in ord to more clearly illustrate embodiments of the present application, below will be to needed in the embodiment attached
Figure is briefly described, it should be understood that the following drawings illustrates only some embodiments of the application, therefore is not construed as pair
The restriction of range for those of ordinary skill in the art without creative efforts, can also be according to this
A little attached drawings obtain other relevant attached drawings.
Fig. 1 shows a kind of structural schematic diagram of conditioning circuit provided by the embodiments of the present application；
Fig. 2 shows the structural schematic diagrams of another kind conditioning circuit provided by the embodiment of the present application；
Fig. 3 shows the structural schematic diagram of another conditioning circuit provided by the embodiment of the present application；
Fig. 4 shows a kind of concrete structure schematic diagram of conditioning circuit provided by the embodiment of the present application；
Fig. 5 shows a kind of flow diagram of the control method of conditioning circuit provided by the embodiment of the present application.
Specific embodiment
To keep the purposes, technical schemes and advantages of the embodiment of the present application clearer, below in conjunction with attached drawing to the application
Technical solution be clearly and completely described, it is clear that described embodiment is some embodiments of the present application, rather than
Whole embodiments.Based on the embodiment in the application, those of ordinary skill in the art are not making creative work premise
Under every other embodiment obtained, shall fall in the protection scope of this application.
In the prior art, when analog signal range to be processed is larger, if to each in analog signal to be processed
A signal carries out same treatment, then the small analog signal of sampled value passes through Digital Signal Processing in analog signal to be processed
After device operation, resolution ratio is lower.
To be carried out first to a kind of conditioning circuit disclosed in the embodiment of the present application detailed convenient for understanding the present embodiment
It is thin to introduce.
Embodiment one
It is shown in Figure 1, it is a kind of structural schematic diagram of conditioning circuit provided by the embodiment of the present application, comprising: first
Conditioning circuit 101, the second conditioning circuit 102 and digital signal processor 103；First conditioning circuit 101, second conditioning electricity
Road 102 is electrically connected with digital signal processor 103 respectively, and the first conditioning circuit 101, the second conditioning circuit 102 are accessed wait adjust
Manage analog signal.
First conditioning circuit 101 obtains the first conditioned signal for improving analog signal to be conditioned, and by
One conditioned signal is input to digital signal processor 103, the amplitude range and mould to be conditioned of 101 input signal of the first conditioning circuit
The quasi- corresponding amplitude range of signal is identical.
Second conditioning circuit 102 obtains the second conditioned signal for improving analog signal to be conditioned, and by
Two conditioned signals are input to digital signal processor 103, and the amplitude range of 102 input signal of the second conditioning circuit is mould to be conditioned
First preset percentage of the quasi- corresponding amplitude range of signal.
Illustratively, when analog signal to be conditioned be voltage signal, and the amplitude variation range of the voltage signal be 0V
When~300V, the amplitude range for the voltage signal that the first conditioning circuit 101 allows to input is 0V~300V, if the first default percentage
Than being 67%, the amplitude range for the voltage signal that the second conditioning circuit 102 allows to input is 0V~201V, to be conditioned when input
When the amplitude of analog signal is 250V, only analog signal to be conditioned is improved by the first conditioning circuit, obtains the first tune
Signal is managed, and the first conditioned signal is input to digital signal processor 103, when the amplitude of the analog signal to be conditioned of input is
When 150V, analog signal to be conditioned is improved by the first conditioning circuit, the second conditioning circuit respectively, respectively corresponds to obtain
First conditioned signal, the second conditioned signal, and the first conditioned signal, the second conditioned signal are input to digital signal processor
103。
Here, the specific value of the first preset percentage is not limited, can be adjusted according to practical application scene.
Digital signal processor 103, for exceeding analog signal to be conditioned when the amplitude for detecting analog signal to be conditioned
When the first preset percentage of corresponding amplitude range, the first conditioned signal is sampled；When detecting simulation to be conditioned letter
Number amplitude without departing from the corresponding amplitude range of analog signal to be conditioned the first preset percentage when, to the second conditioned signal
It is sampled.
Illustratively, led to respectively according to the example above situation when the amplitude of the analog signal to be conditioned of input is 150V
Cross the first conditioning circuit, the second conditioning circuit improves analog signal to be conditioned, respectively correspond to obtain the first conditioned signal,
Second conditioned signal, and the first conditioned signal, the second conditioned signal are input to digital signal processor 103.
When the first preset percentage is set as 67%, the amplitude for the voltage signal that the first conditioning circuit 101 allows to input
Range is 0V~300V, and the amplitude range for the voltage signal that the second conditioning circuit 102 allows to input is 0V~201V, when setting the
The amplitude of the voltage signal of one conditioning circuit input is 300V, and the amplitude for the voltage signal that the second conditioning circuit of setting inputs is
201V, by presetting the first conditioning circuit, the resistance value in the second conditioning circuit, so that the first conditioning circuit, second adjusting
The amplitude for managing the output signal of circuit is 3V.
When so the amplitude of the analog signal to be conditioned is 150V, which passes through the first conditioning electricity respectively
Road, the second conditioning circuit conditioning after, the amplitude of the first obtained conditioned signal is 1.5V, and the amplitude of the second conditioned signal is about
2.25V detects the amplitude 150V of analog signal to be conditioned without departing from the corresponding amplitude range of analog signal to be conditioned at this time
The first preset percentage, i.e., within the scope of 0V~201V, therefore the amplitude 2.25V of the second conditioned signal is sampled.
If digital signal processor is 12, corresponding digital quantity is up to 4096 in digital signal processor, to the
When the amplitude 2.25V of two conditioned signals is sampled, sampling resolution is 2.25V*100/4096 ≈ 0.055.
When the amplitude of analog signal to be conditioned is 250V, analog signal to be conditioned only passes through the conditioning of the first conditioning circuit
Afterwards, the amplitude of the first conditioned signal obtained is 2.5V, detects that the amplitude 250V of analog signal to be conditioned exceeds wait adjust at this time
The first preset percentage for managing the corresponding amplitude range of analog signal that is, within the scope of 201V~300V, therefore is improved first
The amplitude 2.5V of signal is sampled.
If digital signal processor is 12, corresponding digital quantity is up to 4096 in digital signal processor, to the
When the amplitude 2.5V of one conditioned signal is sampled, sampling resolution is 2.5V*100/4096 ≈ 0.061.
When analog signal to be conditioned is carrying out gamut sampling, when demand sampling resolution is more accurate, conditioning circuit is also wrapped
Include: third conditioning circuit 104, third conditioning circuit 104 are electrically connected with digital signal processor 103, and third conditioning circuit 104 connects
Enter analog signal to be conditioned.
Third conditioning circuit 104 obtains third conditioned signal for improving analog signal to be conditioned, and by
Three conditioned signals are input to digital signal processor 103, and the amplitude range of 104 input signal of third conditioning circuit is mould to be conditioned
Second preset percentage of the quasi- corresponding amplitude range of signal, and the second preset percentage is less than the first preset percentage.
Illustratively, according to the example above situation, when analog signal to be conditioned is voltage signal, and the voltage signal
When amplitude variation range is 0V~300V, if the second preset percentage is 34%, third conditioning circuit 104 allows the voltage inputted
The amplitude range of signal is 0V~102V, when the amplitude of the analog signal to be conditioned of input is 50V, passes through the first conditioning respectively
Circuit, the second conditioning circuit, third conditioning circuit improve analog signal to be conditioned, respectively correspond to obtain the first conditioning letter
Number, the second conditioned signal, third conditioned signal, and the first conditioned signal, the second conditioned signal, third conditioned signal are input to
Digital signal processor 103.
Here, the specific value of the second preset percentage is not limited, can be adjusted according to practical application scene, is adjusted
The number at least two of circuit is managed, but unlimited set the tone manages the maximum value of circuits present.
Digital signal processor 103, comprising: amplitude judging unit, the first sampling unit, the second sampling unit and third
Sampling unit, wherein
Amplitude judging unit, it is corresponding beyond analog signal to be conditioned for working as the amplitude for detecting analog signal to be conditioned
When the first preset percentage of amplitude range, the first sampling unit is notified；
When the amplitude for detecting analog signal to be conditioned is pre- beyond the second of the corresponding amplitude range of analog signal to be conditioned
If percentage, but when without departing from the first preset percentage of the corresponding amplitude range of analog signal to be conditioned, notify second to adopt
Sample unit；
When detecting the amplitude of analog signal to be conditioned without departing from the of the corresponding amplitude range of analog signal to be conditioned
When two preset percentages, third sampling unit is notified；
First sampling unit, for being sampled to the first conditioned signal；
Second sampling unit, for being sampled to the second conditioned signal；
Third sampling unit, for being sampled to third conditioned signal.
Illustratively, according to the example above situation, when the amplitude of the analog signal to be conditioned of input is 50V, due to the
The amplitude range for the voltage signal that one conditioning circuit 101 allows to input is 0V~300V, what the second conditioning circuit 102 allowed to input
The amplitude range of voltage signal is 0V~201V, and the amplitude range for the voltage signal that third conditioning circuit 104 allows to input is 0V
~102V, when the amplitude that the voltage signal that the first conditioning circuit inputs is arranged is 300V, the electricity that the second conditioning circuit of setting inputs
The amplitude for pressing signal is 201V, and the amplitude for the voltage signal that setting third conditioning circuit inputs is 102V, by presetting the
One conditioning circuit, the second conditioning circuit, the resistance value in third conditioning circuit so that the first conditioning circuit, the second conditioning circuit,
The amplitude of the output signal of third conditioning circuit is 3V.
When so the amplitude of the analog signal to be conditioned is 50V, which passes through the first conditioning electricity respectively
Road, the second conditioning circuit, third conditioning circuit conditioning after, the amplitude of the first obtained conditioned signal is 0.5V, the second conditioning
The amplitude of signal is about 0.75V, and the amplitude of third conditioned signal is about 1.5V, detects the amplitude of analog signal to be conditioned at this time
50V without departing from the corresponding amplitude range of analog signal to be conditioned the second preset percentage, i.e., within the scope of 0V~102V, because
This samples the amplitude 1.5V of third conditioned signal.
If digital signal processor is 12, corresponding digital quantity is up to 4096 in digital signal processor, to the
When the amplitude 1.5V of three conditioned signals is sampled, sampling resolution is 1.5V*100/4096 ≈ 0.037.It is shown in Figure 2,
For the structural schematic diagram of another kind conditioning circuit provided by the embodiment of the present application, conditioning circuit further include: first switch circuit
105, second switch circuit 106, first switch circuit 105 are electric with the second conditioning circuit 102, digital signal processor 103 respectively
Connection, second switch circuit 106 are electrically connected with third conditioning circuit 104, digital signal processor 103 respectively.
Amplitude judging unit in digital signal processor 103 is also used to when the amplitude for detecting analog signal to be conditioned
The second preset percentage beyond the corresponding amplitude range of analog signal to be conditioned, but it is corresponding without departing from analog signal to be conditioned
Amplitude range the first preset percentage when, send provisioning instruction to first switch circuit 105；When detecting simulation to be conditioned
The amplitude of signal without departing from the corresponding amplitude range of analog signal to be conditioned the second preset percentage when, send provisioning instruction
To second switch circuit 106.
First switch circuit 105, after receiving provisioning instruction, the second conditioning that the second conditioning circuit 102 is exported is believed
The second sampling unit number being input in digital signal processor 103, wherein 105 original state of first switch circuit is to close shape
State.
Second switch circuit 106, after receiving provisioning instruction, the third conditioning that third conditioning circuit 104 is exported is believed
The third sampling unit number being input in digital signal processor 103, wherein 106 original state of second switch circuit is to close shape
State.
Illustratively, when, there are when first switch circuit, the amplitude of analog signal to be conditioned is 150V, should in conditioning circuit
After analog signal to be conditioned passes through the conditioning of the first conditioning circuit, the second conditioning circuit respectively, obtained the first conditioned signal
Amplitude is 1.5V, and the amplitude of the second conditioned signal is about 2.25V, and 105 original state of first switch circuit is in off state at this time,
Second conditioned signal cannot be sent to the second sampling unit in digital signal processor, when detecting analog signal to be conditioned
Amplitude 150V exceeds the second preset percentage of the corresponding amplitude range of analog signal to be conditioned, but without departing from simulation to be conditioned
When the first preset percentage of the corresponding amplitude range of signal, i.e., the amplitude 150V of analog signal to be conditioned is in 102V~201V model
In enclosing, provisioning instruction is sent to first switch circuit 105, after first switch circuit 105 receives provisioning instruction, by the second conditioning electricity
The second conditioned signal that road 102 exports is input to the second sampling unit in digital signal processor 103, i.e., believes the second conditioning
Number amplitude 2.25V sampled.
When, there are when second switch circuit, the amplitude of analog signal to be conditioned is 50V, the simulation to be conditioned in conditioning circuit
After signal passes through the conditioning of the first conditioning circuit, the second conditioning circuit, third conditioning circuit respectively, obtained the first conditioned signal
Amplitude be 0.5V, the amplitude of the second conditioned signal is about 0.75V, and the amplitude of third conditioned signal is about 1.5V, at this time first
105 original state of switching circuit is in off state, and 106 original state of second switch circuit is in off state, the second conditioned signal,
Third conditioned signal cannot be sent to digital signal processor, when detect the amplitude 50V of analog signal to be conditioned without departing from
When the second preset percentage of the corresponding amplitude range of analog signal to be conditioned, i.e., the amplitude 50V of analog signal to be conditioned is in 0V
Within the scope of~102V, provisioning instruction is sent to second switch circuit 106, after second switch circuit 106 receives provisioning instruction, by the
The third conditioned signal of three conditioning circuits 104 output is input to the third sampling unit in digital signal processor 103, i.e., to the
The amplitude 1.5V of three conditioned signals is sampled.It is shown in Figure 3, it is another conditioning circuit provided by the embodiment of the present application
Structural schematic diagram, conditioning circuit further include: ON-OFF control circuit 107, ON-OFF control circuit 107 respectively with first switch circuit
105, second switch circuit 106, digital signal processor 103 are electrically connected.
Digital signal processor 103, the amplitude result for being also used to will test analog signal to be conditioned are sent to switch control
Circuit 107 processed.
ON-OFF control circuit 107, the amplitude for judging analog signal to be conditioned are corresponding beyond analog signal to be conditioned
Amplitude range the second preset percentage, but without departing from the corresponding amplitude range of analog signal to be conditioned first preset hundred
Point than when, send provisioning instruction to first switch circuit 105；Judge the amplitude of analog signal to be conditioned without departing to be conditioned
When the second preset percentage of the corresponding amplitude range of analog signal, provisioning instruction is sent to second switch circuit 106.
It is shown in Figure 4, it is a kind of concrete structure schematic diagram of conditioning circuit provided by the embodiment of the present application, first adjusts
Reason circuit 101 include: first resistor R11, second resistance R12,3rd resistor R13, the 4th resistance R14, the 5th resistance R15, with
And the first amplifier U1；
One end of first resistor R11 connects acquisition device, the other end connection 3rd resistor R13 of first resistor R11 and
The first end of first amplifier U1；
One end of second resistance R12 connects acquisition device, the other end of second resistance R12 connect the 4th resistance R14 and
The second end of first amplifier U1；
The other end of 3rd resistor R13, one end that the 5th resistance R15 is separately connected with the 4th end of the first amplifier U1；
The other end of 4th resistance R14 is grounded；
The 5th of first amplifier U1 terminates default high voltage, and the third of the first amplifier U1 terminates default low-voltage,
In, high voltage is identical as the numerical value of the low-voltage；
The other end of 5th resistance R15 connects digital signal processor 103.
Here, high voltage Vcc is preset, default low-voltage-Vcc can be adjusted according to actual application scenarios.
Second conditioning circuit 102 include: the 6th resistance R21, the 7th resistance R22, the 8th resistance R23, the 9th resistance R24,
Tenth resistance R25 and the second amplifier U2；
One end of 6th resistance R21 connects acquisition device, the other end of the 6th resistance R21 connect the 8th resistance R23 and
The first end of second amplifier U2；
One end of 7th resistance R22 connects acquisition device, the other end of the 7th resistance R22 connect the 9th resistance R24 and
The second end of second amplifier U2；
The other end of 8th resistance R23, one end that the tenth resistance R25 is separately connected with the 4th end of the second amplifier U2；
The other end of 9th resistance R24 is grounded；
The 5th termination high voltage of second amplifier U2, the third of the second amplifier U2 terminate low-voltage；
The other end of tenth resistance R25 connects first switch circuit 105.
Here, high voltage Vcc, low-voltage-Vcc can be adjusted according to actual application scenarios.
Third conditioning circuit 104 includes: eleventh resistor R31, twelfth resistor R32, thirteenth resistor R33, the 14th
Resistance R34, the 15th resistance R35 and third amplifier U3；
One end of eleventh resistor R31 connects acquisition device, and the other end of eleventh resistor R31 connects thirteenth resistor
The first end of R33 and the second amplifier U2；
One end of twelfth resistor R32 connects acquisition device, and the other end of twelfth resistor R32 connects the 14th resistance
The second end of R34 and the second amplifier U2；
The 4th end of the other end of thirteenth resistor R33 and the second amplifier U2 are separately connected the one of the 15th resistance R35
End；
The other end of 14th resistance R34 is grounded；
The 5th termination high voltage of second amplifier U2, the third of the second amplifier U2 terminate low-voltage；
The other end of 15th resistance R35 connects second switch circuit 106.
Here, high voltage Vcc, low-voltage-Vcc can be adjusted according to actual application scenarios.
Specifically, first resistor R11, second resistance R12, the 6th resistance R21, the 7th resistance R22, eleventh resistor R31,
The resistance value of twelfth resistor R32 is identical, and the 5th resistance R15, the tenth resistance R25, the resistance value of the 15th resistance R35 are identical, third
Resistance R13, the resistance value of the 4th resistance R14 are identical, and the 8th resistance R23, the resistance value of the 9th resistance R24 are identical, thirteenth resistor
R33, the resistance value of the 14th resistance R34 are identical, and the resistance value of 3rd resistor R13, the 4th resistance R14 and the 8th resistance R23, the 9th
The resistance value and thirteenth resistor R33 of resistance R24, the proportionate relationship of the resistance value of the 14th resistance R34 are according to the first conditioning circuit
The amplitude range of 102 input signal of the amplitude range of 101 input signals and the second conditioning circuit is configured.
Illustratively, according to the example above situation, due to the amplitude for the voltage signal that the first conditioning circuit 101 allows to input
Range is 0V~300V, and the amplitude range for the voltage signal that the second conditioning circuit 102 allows to input is 0V~201V, third conditioning
The amplitude range for the voltage signal that circuit 104 allows to input is 0V~102V, is believed when the voltage that the first conditioning circuit inputs is arranged
Number amplitude be 300V, setting the second conditioning circuit input voltage signal amplitude be 201V, setting third conditioning circuit it is defeated
The amplitude of the voltage signal entered is 102V, by presetting the first conditioning circuit, the second conditioning circuit, in third conditioning circuit
Resistance value so that the amplitude of output signal of the first conditioning circuit, the second conditioning circuit, third conditioning circuit is 3V, this
When resistance value be R11=R12=R21=R22=R31=R32, R15=R25=R35, R13=R14=2*R23/3=2*
R24/3=R33/3=R34/3.
A kind of conditioning circuit is present embodiments provided, by according to the corresponding amplitude range of analog signal to be conditioned, setting
The amplitude range of the input signal of first conditioning circuit, the second conditioning circuit, and then by comparing the width of analog signal to be conditioned
It is worth the first preset percentage of amplitude range corresponding with analog signal to be conditioned, determines the conditioned signal sampled, realizes
When treating conditioned signal progress gamut sampling, sampling resolution is improved.
Embodiment two
As shown in figure 5, being answered for a kind of flow diagram of the control method of conditioning circuit provided by the embodiment of the present application
For any one conditioning circuit in above-described embodiment one, method includes the following steps:
S501 improves analog signal to be conditioned by the first conditioning circuit, obtains the first conditioned signal, and by
One conditioned signal is input to digital signal processor, the amplitude range of the first conditioning circuit input signal and analog signal to be conditioned
Corresponding amplitude range is identical.
S502 improves analog signal to be conditioned by the second conditioning circuit, obtains the second conditioned signal, and by
Two conditioned signals are input to digital signal processor, and the amplitude range of the second conditioning circuit input signal is analog signal to be conditioned
First preset percentage of corresponding amplitude range.
S503, when detecting the of the amplitude of analog signal to be conditioned beyond the corresponding amplitude range of analog signal to be conditioned
When one preset percentage, the first conditioned signal is sampled；When detect the amplitude of analog signal to be conditioned without departing to
When improving the first preset percentage of the corresponding amplitude range of analog signal, the second conditioned signal is sampled.
In embodiment provided herein, it should be understood that disclosed device and method, it can be by others side
Formula is realized.The apparatus embodiments described above are merely exemplary, for example, the division of the unit, only one kind are patrolled
Function division is collected, there may be another division manner in actual implementation, in another example, multiple units or components can combine or can
To be integrated into another system, or some features can be ignored or not executed.Another point, shown or discussed is mutual
Coupling, direct-coupling or communication connection can be INDIRECT COUPLING or communication link by some communication interfaces, device or unit
It connects, can be electrical property, mechanical or other forms.
The unit as illustrated by the separation member may or may not be physically separated, aobvious as unit
The component shown may or may not be physical unit, it can and it is in one place, or may be distributed over multiple
In network unit.It can select some or all of unit therein according to the actual needs to realize the mesh of this embodiment scheme
's.
In addition, each functional unit in embodiment provided by the present application can integrate in one processing unit, it can also
To be that each unit physically exists alone, can also be integrated in one unit with two or more units.
It should also be noted that similar label and letter indicate similar terms in following attached drawing, therefore, once a certain Xiang Yi
It is defined in a attached drawing, does not then need that it is further defined and explained in subsequent attached drawing, in addition, term " the
One ", " second ", " third " etc. are only used for distinguishing description, are not understood to indicate or imply relative importance.
Finally, it should be noted that embodiment described above, the only specific embodiment of the application, to illustrate the application
Technical solution, rather than its limitations, the protection scope of the application is not limited thereto, although with reference to the foregoing embodiments to this Shen
It please be described in detail, those skilled in the art should understand that: anyone skilled in the art
Within the technical scope of the present application, it can still modify to technical solution documented by previous embodiment or can be light
It is readily conceivable that variation or equivalent replacement of some of the technical features；And these modifications, variation or replacement, do not make
The essence of corresponding technical solution is detached from the spirit and scope of the embodiment of the present application technical solution.The protection in the application should all be covered
Within the scope of.Therefore, the protection scope of the application shall be subject to the protection scope of the claim.
Claims (10)
1. a kind of conditioning circuit characterized by comprising the first conditioning circuit, the second conditioning circuit and Digital Signal Processing
Device；First conditioning circuit, second conditioning circuit are electrically connected with the digital signal processor respectively, and described first adjusts
Reason circuit, the second conditioning circuit access analog signal to be conditioned；
First conditioning circuit obtains the first conditioned signal for improving the analog signal to be conditioned, and by institute
It states the first conditioned signal and is input to the digital signal processor, the amplitude range of the first conditioning circuit input signal and institute
It is identical to state the corresponding amplitude range of analog signal to be conditioned；
Second conditioning circuit obtains the second conditioned signal for improving the analog signal to be conditioned, and by institute
It states the second conditioned signal and is input to the digital signal processor, the amplitude range of the second conditioning circuit input signal is institute
State the first preset percentage of the corresponding amplitude range of analog signal to be conditioned；
The digital signal processor, for exceeding the simulation to be conditioned when the amplitude for detecting the analog signal to be conditioned
When the first preset percentage of the corresponding amplitude range of signal, first conditioned signal is sampled；It is described when detecting
First preset percentage of the amplitude of analog signal to be conditioned without departing from the corresponding amplitude range of the analog signal to be conditioned
When, second conditioned signal is sampled.
2. conditioning circuit according to claim 1, which is characterized in that further include: third conditioning circuit, the third conditioning
Circuit is electrically connected with the digital signal processor, and the third conditioning circuit accesses analog signal to be conditioned；
The third conditioning circuit obtains third conditioned signal for improving the analog signal to be conditioned, and by institute
It states third conditioned signal and is input to the digital signal processor, the amplitude range of the third conditioning circuit input signal is institute
The second preset percentage of the corresponding amplitude range of analog signal to be conditioned is stated, second preset percentage is less than described first
Preset percentage；
The digital signal processor, comprising: amplitude judging unit, the first sampling unit, the second sampling unit and third are adopted
Sample unit, wherein
The amplitude judging unit, for believing when the amplitude for detecting the analog signal to be conditioned beyond the simulation to be conditioned
When the first preset percentage of number corresponding amplitude range, first sampling unit is notified；
When detecting the of the amplitude of the analog signal to be conditioned beyond the corresponding amplitude range of the analog signal to be conditioned
Two preset percentages, but when without departing from the first preset percentage of the corresponding amplitude range of the analog signal to be conditioned, lead to
Know second sampling unit；
When detecting the amplitude of the analog signal to be conditioned without departing from the corresponding amplitude range of the analog signal to be conditioned
The second preset percentage when, notify the third sampling unit；
First sampling unit, for being sampled to first conditioned signal；
Second sampling unit, for being sampled to second conditioned signal；
The third sampling unit, for being sampled to the third conditioned signal.
3. conditioning circuit according to claim 2, which is characterized in that further include: first switch circuit, the first switch
Circuit is electrically connected with second conditioning circuit, the digital signal processor respectively；
The first switch circuit, after receiving provisioning instruction, by the second conditioned signal of second conditioning circuit output
Second sampling unit being input in the digital signal processor, wherein the first switch circuit original state is to close
Closed state.
4. conditioning circuit according to claim 3, which is characterized in that further include: second switch circuit, the second switch
Circuit is electrically connected with the third conditioning circuit, the digital signal processor respectively；
The second switch circuit improves the third of third conditioning circuit output after receiving the provisioning instruction
Signal is input to the third sampling unit in the digital signal processor, wherein the second switch circuit original state
It is in off state.
5. conditioning circuit according to claim 3, which is characterized in that the amplitude in the digital signal processor is sentenced
Disconnected unit is also used to exceed the corresponding amplitude of the analog signal to be conditioned when the amplitude for detecting the analog signal to be conditioned
Second preset percentage of range, but without departing from the first default percentage of the corresponding amplitude range of the analog signal to be conditioned
Than when, send the provisioning instruction to the first switch circuit.
6. conditioning circuit according to claim 4, which is characterized in that the amplitude in the digital signal processor is sentenced
Disconnected unit is also used to detect that the amplitude of the analog signal to be conditioned is corresponding without departing from the analog signal to be conditioned
When the second preset percentage of amplitude range, the provisioning instruction is sent to the second switch circuit.
7. conditioning circuit according to claim 3, which is characterized in that first conditioning circuit includes: first resistor,
Two resistance, 3rd resistor, the 4th resistance, the 5th resistance and the first amplifier；
One end of the first resistor connects acquisition device, the other end of the first resistor connect the 3rd resistor and
The first end of first amplifier；
One end connection acquisition device of the second resistance, other end connection the 4th resistance of the second resistance,
And the second end of first amplifier；
The other end of the 3rd resistor, one end that the 5th resistance is separately connected with the 4th end of first amplifier；
The other end of 4th resistance is grounded；
The 5th of first amplifier terminates default high voltage, and the third of first amplifier terminates default low-voltage,
In, the high voltage is identical as the numerical value of the low-voltage；
The other end of 5th resistance connects the digital signal processor.
8. conditioning circuit according to claim 7, which is characterized in that second conditioning circuit includes: the 6th resistance,
Seven resistance, the 8th resistance, the 9th resistance, the tenth resistance and the second amplifier；
One end connection acquisition device of 6th resistance, other end connection the 8th resistance of the 6th resistance,
And the first end of second amplifier；
One end connection acquisition device of 7th resistance, other end connection the 9th resistance of the 7th resistance,
And the second end of second amplifier；
The other end of 8th resistance, one end that the tenth resistance is separately connected with the 4th end of second amplifier；
The other end of 9th resistance is grounded；
The 5th termination high voltage of second amplifier, the third of second amplifier terminate the low-voltage；
The other end of tenth resistance connects the first switch circuit.
9. conditioning circuit according to claim 8, which is characterized in that the first resistor, the second resistance, described
Six resistance, the resistance value of the 7th resistance are identical, and the 5th resistance, the resistance value of the tenth resistance are identical, the third electricity
Resistance, the resistance value of the 4th resistance are identical, and the 8th resistance, the resistance value of the 9th resistance are identical, and the 3rd resistor,
The proportionate relationship of the resistance value of 4th resistance and the resistance value of the 8th resistance, the 9th resistance is according to first conditioning
The amplitude range of circuit input signal and the amplitude range of the second conditioning circuit input signal are configured.
10. a kind of control method of conditioning circuit, which is characterized in that be applied in such as any conditioning circuit of claim 1-9, institute
The method of stating includes:
Analog signal to be conditioned is improved by the first conditioning circuit, obtains the first conditioned signal, and described first is adjusted
Reason signal is input to digital signal processor, the amplitude range of the first conditioning circuit input signal and the simulation to be conditioned
The corresponding amplitude range of signal is identical；
The analog signal to be conditioned is improved by the second conditioning circuit, obtains the second conditioned signal, and by described
Two conditioned signals are input to the digital signal processor, the amplitude range of the second conditioning circuit input signal be it is described to
Improve the first preset percentage of the corresponding amplitude range of analog signal；
When detecting the of the amplitude of the analog signal to be conditioned beyond the corresponding amplitude range of the analog signal to be conditioned
When one preset percentage, first conditioned signal is sampled；When the amplitude for detecting the analog signal to be conditioned does not have
When having the first preset percentage beyond the corresponding amplitude range of the analog signal to be conditioned, to second conditioned signal into
Row sampling.
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| CN201910751477.6A CN110442182A (en) | 2019-08-15 | 2019-08-15 | A kind of control method of conditioning circuit and conditioning circuit |
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| CN201910751477.6A CN110442182A (en) | 2019-08-15 | 2019-08-15 | A kind of control method of conditioning circuit and conditioning circuit |
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| CN110907691A (en) * | 2019-12-05 | 2020-03-24 | 中国人民解放军92942部队 | Wide-range direct-current voltage measuring device based on resistance voltage division time-sharing sampling self-calibration |
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Application publication date: 20191112 |