CN109787334A - A kind of nonlinear Control managing device of piezoelectric energy acquisition - Google Patents
A kind of nonlinear Control managing device of piezoelectric energy acquisition Download PDFInfo
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- CN109787334A CN109787334A CN201910125665.8A CN201910125665A CN109787334A CN 109787334 A CN109787334 A CN 109787334A CN 201910125665 A CN201910125665 A CN 201910125665A CN 109787334 A CN109787334 A CN 109787334A
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Abstract
The present invention discloses a kind of nonlinear Control managing device of piezoelectric energy acquisition, purpose is in order to find the implementation of the nonlinear Control management of more efficiently piezoelectric energy acquisition, it includes resonance matching circuit, rectification circuit, storage capacitor CD, control circuit and power end, resonance matching circuit includes PZT (piezoelectric transducer) and up-conversion switching circuit, and resonance matching circuit is connected to the control circuit by up-converter circuit；The input side of rectification circuit is connect with up-conversion switching circuit, and the outlet side of rectification circuit is connect with one end of storage capacitor CD, and the other end of storage capacitor CD connects to the control circuit.The electric current that the present invention passes through detection PZT (piezoelectric transducer) and two branch of storage capacitor, the duty ratio of automatic control switch, realize resonance matching, PZT (piezoelectric transducer) can obtain maximum power output, storage capacitor also obtains maximum charge power, it is that the load of relatively high power energizes to which energy is efficiently transformed into energy storage device from PZT (piezoelectric transducer).
Description
Technical field
The present invention relates to energy acquisition management circuit and field of non-linear control, specifically, the present invention relates to a kind of pressures
The nonlinear Control managing device of generated energy acquisition.
Background technique
In many application of higher wireless sensor network environment, battery altering is extremely difficult.It will be in environment using energy collecting device
Energy be converted to electric energy, be wireless sensor and electronic device for that can solve the problems, such as energy resource supply very well.But works as and adopt
Collect the natural environment energy when, piezoelectric energy source may be it is unknown, vibration signal is low frequency, changes at random, PZT (piezoelectric transducer)
It is weak to export energy comparison, is difficult efficiently to be collected into weaker energy using usual energy acquisition management circuit, this also just means nothing
Method obtains the maximum output power of energy converter.In the application of some higher-wattages, such as wireless sensor, using maximum power point with
Track technology can automatically track energy converter output power maximum point in unknown energy converter.However, due to resonance circuit
It is non-linear, conventional feedback be difficult lock maximum point.And existing MPPT maximum power point tracking management circuit is extremely complex, packet
Computing circuit containing various logic, or single-chip microcontroller or micro-control unit are used, these complicated high power consumption circuits are for weaker
For energy collecting device, it is clear that be that the energy of its work can not be provided.Therefore need to design lower power consumption automatically tracks maximum
The energy acquisition of power manages circuit, and PZT (piezoelectric transducer) output energy efficient is transformed into energy-storage travelling wave tube, is the nothing of relatively high power
The energy supply of line sensor.
Summary of the invention
In order to find the implementation for the nonlinear Control management that more efficiently piezoelectric energy acquires, the present invention provides
A kind of nonlinear Control managing device of piezoelectric energy acquisition.
To achieve the above object, a kind of nonlinear Control managing device of piezoelectric energy acquisition of the present invention comprising tuning
Match circuit, rectification circuit, storage capacitor CD, control circuit and power end, the resonance matching circuit includes piezoelectric energy-conversion
Device and the up-conversion switching circuit being connect with the PZT (piezoelectric transducer), the resonance matching circuit by the up-converter circuit with
The control circuit connection；The input side of the rectification circuit is connect with the up-conversion switching circuit, the rectification circuit
Outlet side is connect with one end of the storage capacitor CD, and the other end of the storage capacitor CD is connect with the control circuit.
Preferably, the PZT (piezoelectric transducer) is the parallel connection of current source Is and capacitor Cs, the cathode ground connection of the current source Is；
The up-converter circuit includes nonlinear device switch S1, sampling resistor RS2 and transformer T1, wherein
One end of the nonlinear device switch S1 is connect with the anode of the current source Is, the nonlinear device switch
The other end of S1 is connect with the upper end of the transformer T1 input side, the nonlinear Control end of the nonlinear device switch S1 with
The control circuit connection；
One end of the sampling resistor RS2 is connect with the cathode of the current source Is, under the transformer T1 input side
End, control circuit are connect with the other end of the sampling resistor RS2 respectively；
The transformer T1 outlet side is connect with the input side of the rectification circuit.
Preferably, the control circuit includes clock unit, control pulse-generating circuit, for detecting Maximum Power Output
First control unit, the second control unit for judging maximum energy converter output electric current, switch S3 and with power end company
The resistance R2 connect, wherein
The nonlinear Control end of the nonlinear device switch S1, clock unit, switch S3 respectively with the control pulse
Generation circuit connection；
The first control unit includes the Peak current connecting with the other end of storage capacitor CD and the Peak current
The filtering and amplifying circuit of connection, second control unit include the peak point connecting with the other end of the sampling resistor RS2
Circuit and comparison circuit is kept with the sampling of the peak point circuit connection, the switch S3 includes and control pulse production
The common end of raw circuit connection, the switch control terminal and the filtering and amplifying circuit for keeping comparison circuit to connect with the sampling
The movable end a of the connection and movable end b being connect by the resistance R2 with the power end；
The sampling keeps comparison circuit to connect with the power end.
Preferably, the control pulse-generating circuit includes control comparator U4 and capacitor C4；
The control comparator U4 includes that the control that connect with the nonlinear Control end of the nonlinear device switch S1 is defeated
Outlet passes through the capacitor C4 cathode control signal being grounded and the positive control signal connecting with the clock unit；
The control pulse-generating circuit is connect by the cathode control signal with the common end of the switch S3.
Preferably, the Peak current includes sampling resistor RS1, diode D1, capacitor C1 and peak comparator U1；Institute
Stating peak comparator U1 includes peak output terminal, positive peak value input terminal and the cathode peak value connecting with the peak output terminal
Input terminal；
One end of the sampling resistor RS1 is connect with the other end of the storage capacitor CD, and the sampling resistor RS1's is another
One end ground connection；
The anode of the diode D1 is connected to the junction of the sampling resistor RS1 Yu the storage capacitor CD, described
The cathode of diode D1 is connect with the positive peak value input terminal of the peak comparator U1；
One end of the capacitor C1 is connected to the cathode of the diode D1 and the junction of the positive peak value input terminal,
The other end of the capacitor C1 is grounded.
Preferably, the filtering and amplifying circuit includes amplification filter comparator U5, resistance R5, resistance R6, resistance R3 and institute
State the capacitor C5 and resistance R4 of resistance R3 parallel connection, wherein
The amplification filter comparator U5 includes amplification filtering output end, cathode amplification filter input and anode amplification
Filter input, the amplification filter comparator U5 are connect by the amplification filtering output end with the movable end a；
One end of the resistance R3 is connected to the junction of the movable end a and the amplification filtering output end, the electricity
The other end of resistance R3 is connect with one end of the resistance R4, one end ground connection of the resistance R4；
The cathode amplification filter input is connected to the junction of the resistance R3 Yu the resistance R4；
One end of the resistance R6 is connect with the anode amplification filter input, the other end and the peak comparator U1
Peak output terminal connection；
One end of the resistance R5 is connected to the junction of the resistance R6 and the anode amplification filter input, another
End ground connection.
Preferably, the peak value dot circuit includes peak point comparator U2, capacitor C2 and diode D2；
The peak point comparator U2 includes peak point output end, the cathode peak for keeping comparison circuit to connect with the sampling
The positive peak value of the junction of the lower end of value point input terminal and the connection sampling resistor RS2 and the transformer T1 input side
Point input terminal；
The cathode of the diode D2 is connect with the cathode peak point input terminal, and the anode of the diode D2 also connects
In the junction of the sampling resistor RS2 and the lower end of the transformer T1 input side；
One end of the capacitor C2 is connect with the cathode peak point input terminal, other end ground connection.
Preferably, it includes that sampling keeps comparator U3, sample-hold switch S2, capacitor that the sampling, which keeps comparison circuit,
C3, resistance R1 and reference voltage terminal Vref；It includes the switch control terminal with the switch S3 that the sampling, which keeps comparator U3,
The sampling of connection keeps output end, anode sampling that input terminal and the cathode connecting with reference voltage terminal Vref sampling is kept to keep
Input terminal；
The anode sampling keeps input terminal to connect with one end of the sample-hold switch S2, the sample-hold switch
The other end of S2 is connect with the clock unit, and the sampling of the sample-hold switch S2 keeps control terminal and the peak point ratio
Peak point output end connection compared with device U2；
One end of the capacitor C3 is connected to the company that the anode sampling keeps input terminal and the sample-hold switch S2
Connect place, other end ground connection；
One end of the resistance R1 be connected to the switch S3 and the sampling holding output end junction, the other end then with
Power end connection.
Preferably, the control circuit includes clock unit, control pulse-generating circuit, for judging that maximum energy converter is defeated
Second control unit of electric current out；
Second control unit include the peak value dot circuit being connect with the other end of the sampling resistor RS2 and with institute
The sampling for stating peak point circuit connection keeps comparison circuit；The clock unit, sampling keep comparison circuit, nonlinear device to open
The nonlinear Control end for closing S1 is connect with the control pulse-generating circuit respectively；The sampling keeps comparison circuit and the electricity
Source connection.
Preferably, it includes that sampling keeps comparator, the control pulse-generating circuit packet that the sampling, which keeps comparison circuit,
Control comparator is included, the sampling keeps the output end of comparator and the output end of the control comparator to connect.
Compared with prior art, a kind of nonlinear Control managing device of piezoelectric energy acquisition of the embodiment of the present invention has such as
It is lower the utility model has the advantages that
A kind of nonlinear Control managing device of piezoelectric energy acquisition of the embodiment of the present invention by detection PZT (piezoelectric transducer) and
The electric current of two branch of storage capacitor, the duty ratio of automatic control switch realize that resonance matching, PZT (piezoelectric transducer) can obtain maximum
Power output, storage capacitor also obtains maximum charge power, so that energy is efficiently transformed into accumulator from PZT (piezoelectric transducer)
Part is that the load of relatively high power energizes.
The additional aspect of the present invention and advantage will be set forth in part in the description, these will become from the following description
Obviously, or practice through the invention is recognized.
Detailed description of the invention
Above-mentioned and/or additional aspect and advantage of the invention will become from the following description of the accompanying drawings of embodiments
Obviously and it is readily appreciated that, in which:
Fig. 1 is that a kind of circuit structure of the nonlinear Control managing device of piezoelectric energy acquisition of an embodiment of the present invention shows
It is intended to；
Fig. 2 is that a kind of circuit waveform of the nonlinear Control managing device of piezoelectric energy acquisition of an embodiment of the present invention shows
It is intended to；
Fig. 3 is a kind of circuit knot of the nonlinear Control managing device of piezoelectric energy acquisition of another embodiment of the invention
Structure schematic diagram.
Specific embodiment
The embodiment of the present invention is described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning to end
Same or similar label indicates same or similar element or element with the same or similar functions.Below with reference to attached
The embodiment of figure description is exemplary, and for explaining only the invention, and is not construed as limiting the claims.
Referring to Fig. 1, a kind of nonlinear Control managing device of piezoelectric energy acquisition of the embodiment of the present invention comprising tuning
Match circuit 30, rectification circuit 60, storage capacitor CD, control circuit 10 and power end Vcc1, wherein resonance matching circuit 30
Including PZT (piezoelectric transducer) 301 and the up-conversion switching circuit 303 connecting with PZT (piezoelectric transducer) 301, resonance matching circuit 30 passes through
Up-converter circuit 303 is connect with control circuit 10；The input side of rectification circuit 60 is connect with up-conversion switching circuit 303, rectification
The outlet side of circuit 60 is connect with one end of storage capacitor CD, and the other end of storage capacitor CD is connect with control circuit 10.
In some embodiments, PZT (piezoelectric transducer) 301 can be equivalent to the parallel connection of current source Is and capacitor Cs, wherein
The cathode of current source Is is grounded.
In view of upconversion function may be implemented in nonlinear device switch, and PZT (piezoelectric transducer) 301 collects the energy of environment,
Such as vibrational energy, what is usually obtained on PZT (piezoelectric transducer) 301 is low frequency random signal, in order to obtain peak power output, is needed
Low frequency random signal is adjusted upward, therefore, up-converter circuit 303 preferably includes nonlinear device switch S1, sampling resistor
RS2 and transformer T1, wherein one end of nonlinear device switch S1 is connect with the anode of current source Is, and nonlinear device is opened
Close S1 the other end connect with the upper end of transformer T1 input side, the nonlinear Control end of nonlinear device switch S1 then with control
Circuit 10 connects；One end of sampling resistor RS2 is connect with the cathode of current source Is, the lower end of transformer T1 input side, control electricity
Road 10 is then connect with the other end of sampling resistor RS2 respectively；Transformer T1 outlet side is connect with the input side of rectification circuit 60.
Preferably, rectification circuit 60 is bridge rectifier.
In some embodiments, control circuit 10 includes clock unit 100, control pulse-generating circuit 200, for examining
Survey the first control unit of Maximum Power Output, the second control unit for judging maximum energy converter output electric current, switch S3
And the resistance R2 being connect with power end Vcc1, wherein the nonlinear Control end of nonlinear device switch S1, clock unit 100,
Switch S3 is connect with control pulse-generating circuit 200 respectively；First control unit includes connecting with the other end of storage capacitor CD
Peak current 101, the filtering and amplifying circuit 103 that is connect with Peak current 101, the second control unit includes and sampling resistor
The peak value dot circuit 201 of the other end connection of RS2 and the sampling connecting with peak value dot circuit 201 keep comparison circuit 203；It opens
Closing S3 includes the common end connecting with control pulse-generating circuit 200, the switch control for keeping comparison circuit 203 to connect with sampling
End, the movable end a being connect with filtering and amplifying circuit 103 and the movable end b being connect by resistance R2 with power end Vcc1；Sampling
Comparison circuit 203 is kept to connect with power end Vcc1.
Control pulse-generating circuit 200 include control comparator U4 and capacitor C4, wherein control comparator U4 include with it is non-
The control output end of the nonlinear Control end connection of linear unit switch S1, by the capacitor C4 cathode control signal being grounded and
The positive control signal being connect with clock unit 100；It controls pulse-generating circuit 200 and passes through cathode control signal and switch
The common end of S3 connects.
In some embodiments, Peak current 101 includes sampling resistor RS1, diode D1, capacitor C1 and peak value ratio
Compared with device U1, wherein peak comparator U1 includes peak output terminal, positive peak value input terminal and connect with peak output terminal negative
Pole peak value input terminal；One end of sampling resistor RS1 is connect with the other end of storage capacitor CD, another termination of sampling resistor RS1
Ground；The anode of diode D1 is connected to the junction of sampling resistor RS1 Yu storage capacitor CD, the cathode and peak value ratio of diode D1
Positive peak value input terminal connection compared with device U1；One end of capacitor C1 is connected to the cathode and positive peak value input terminal of diode D1
Junction, the other end ground connection of capacitor C1.
Filtering and amplifying circuit 103 includes amplification filter comparator U5, resistance R5, resistance R6, resistance R3, in parallel with resistance R3
Capacitor C5 and resistance R4, wherein amplification filter comparator U5 include amplification filtering output end, cathode amplify filter input
And anode amplification filter input, amplification filter comparator U5 are connect by amplifying filtering output end with movable end a；Resistance R3
One end be connected to movable end a and amplify the junction of filtering output end, the other end of resistance R3 connect with one end of resistance R4,
One end of resistance R4 is grounded, and cathode amplification filter input is connected to the junction of resistance R3 Yu resistance R4；One end of resistance R6
It is connect with anode amplification filter input, the other end is connect with the peak output terminal of peak comparator U1, and one end of resistance R5 connects
It connects in the junction of resistance R6 and anode amplification filter input, other end ground connection.
In some embodiments, peak value dot circuit 201 includes peak point comparator U2, capacitor C2 and diode D2,
Wherein, peak point comparator U2 includes the peak point output end for keeping comparison circuit 203 to connect with sampling, the input of cathode peak point
The positive peak point input terminal of the junction of end and the lower end of connection sampling resistor RS2 and transformer T1 input side；Diode
The cathode of D2 is connect with cathode peak point input terminal, and the anode of diode D2 is connected to sampling resistor RS2 and transformer T1 and inputs
The junction of the lower end of side；One end of capacitor C2 is connect with cathode peak point input terminal, other end ground connection.
It includes that sampling keeps comparator U3, sample-hold switch S2, capacitor C3, resistance R1 that sampling, which keeps comparison circuit 203,
And reference voltage terminal Vref, wherein it includes that the sampling connecting with the switch control terminal of switch S3 is protected that sampling, which keeps comparator U3,
Hold output end, anode sampling keeps input terminal and the cathode connecting with reference voltage terminal Vref sampling keeps input terminal；Anode
Sampling keeps input terminal to connect with one end of sample-hold switch S2, the other end and clock unit 100 of sample-hold switch S2
The sampling of connection, sample-hold switch S2 keeps control terminal to connect with the peak point output end of peak point comparator U2；Capacitor C3
One end be connected to anode sampling keep input terminal and sample-hold switch S2 junction, the other end be grounded；The one of resistance R1
End is connected to switch S3 and sampling keeps output end junction, and the other end is then connect with power end Vcc1.
Referring to Fig. 2, Fig. 2 shows a kind of nonlinear Control managing devices of piezoelectric energy acquisition of the embodiment of the present invention
Circuit waveform schematic diagram, the nonlinear Control managing device that a kind of piezoelectric energy of embodiment acquires to facilitate the understanding of the present invention,
Its working principle is sketched below with reference to Fig. 2:
First control unit is to control nonlinear device switch S1's for maximum charge power on tracing energy-storage capacitor CD
Duty ratio realizes that PZT (piezoelectric transducer) 301 arrives the maximum power transfer of storage capacitor CD；Since the voltage on storage capacitor CD cannot
Mutation, maximum power point is identical as maximum current point, therefore, by maximum current on acquisition resistance RS1, can track maximum
Power points；Voltage obtains the electricity with largest current change by Peak current 101, filtering and amplifying circuit 103 on sampling resistor RS1
Pressure value；When switch S3 control terminal is low level, common end is connected with movable end a point, and the cathode of control comparator U4 controls input
End obtains the waveform of change in duty cycle compared with the waveform that clock unit 100 exports；As charging current increases, the level
Also increase, duty ratio is gradually reduced by 50%, until close to maximum charging current and maximum power value.
Since feedback system is a nonlinear system, if only cannot achieve automatically by detecting Maximum Power Output
Capture maximum power point.In order to lock maximum charging current automatically, it is defeated for maximum PZT (piezoelectric transducer) to increase by the second control unit
Electric current is judged out, and sampling resistor RS2 acquires PZT (piezoelectric transducer) and exports electric current, and peak value dot circuit 201 judges whether that piezoelectricity changes
Whether energy device maximum output current point is between clock high period, if so, turning off nonlinear device switch S1 signal in advance.
In some embodiments, clock unit 100 exports sawtooth wave CLK1 and impulse wave CLK2, period T, pulse
Wave CLK2 initial time is t0, voltage waveform VR1 starts to increase on sampling resistor RS2, comparison circuit 203 is kept through over-sampling,
Switch S3 control waveform VS3 is obtained, waveform VS3 rising edge t is controlled1It is 301 maximum output current point of PZT (piezoelectric transducer), which exists
The failing edge t of impulse wave CLK22Before, then, nonlinear device switch S1 controls signal VS1 in t1Moment becomes low level by force.
In this way, avoiding the problem that nonlinear system can not lock automatically by first control unit and the second control unit.
Referring to Fig. 3, Fig. 3 shows a kind of nonlinear Control pipe of piezoelectric energy acquisition of another embodiment of the invention
The circuit structure for managing device, in addition to removal first control unit, switch S3, resistance R2 namely second clock unit 1002, the
Two samplings keep the nonlinear Control end of comparison circuit 2032, the second nonlinear device switch S12 to control pulse with second respectively
Generation circuit 2002 connects, it can be seen that the structure of above-described embodiment is essentially identical, and working principle is also essentially identical, therefore, no
It being described in detail again, it is notable that the second sampling keeps comparison circuit 2032 compared with sampling keeps comparison circuit 203, the
The second anode sampling that comparator U32 is compared in two sampling holdings keeps input terminal to sample holding input terminal with the second cathode and exchanges position
It sets, the second sampling keeps the second control that the output end of comparator U32 is directly connected in the second control pulse-generating circuit 2002
The output end of comparator U42 processed, the second sampling keep the control of comparator U32 and second comparator U42 to pass through resistance R12 and power supply
Vcc2 is held to be connected, any one comparator is low level in this way, and the control signal of nonlinear device switch S12 is all low, realization
Duty ratio automatic adjustment.Due to only detecting maximum transducer current, control pulse-off, and save energy storage current detecting and control
System.Therefore, which realizes simpler that power consumption is lower, convenient for constituting integrated circuit.
Compared with prior art, a kind of nonlinear Control managing device of piezoelectric energy acquisition of the embodiment of the present invention has such as
It is lower the utility model has the advantages that
A kind of nonlinear Control managing device of piezoelectric energy acquisition of the embodiment of the present invention passes through detection PZT (piezoelectric transducer) 301
With the electric current of two branch of storage capacitor CD, the duty ratio of automatic control switch realizes resonance matching, and PZT (piezoelectric transducer) 301 can
Maximum power output is obtained, storage capacitor CD also obtains maximum charge power, thus efficiently by energy from PZT (piezoelectric transducer) 301
It is transformed into energy storage device, is that the load of relatively high power energizes.
A kind of control circuit 10 of the nonlinear Control managing device of piezoelectric energy acquisition of the embodiment of the present invention uses complete
Portion is low-power consumption analog circuit and switching circuit, and traditional nonlinear circuit is avoided to need high power consumption logic circuit or single-chip microcontroller
Disadvantage can realize that energy converter arrives oneself of energy storage device high efficiency energy according to electric current on automatic detection energy converter and storage capacitor
Turn is moved, and this circuit can be directed to different PZT (piezoelectric transducer)s automatically, may be designed as low power consumption integrated circuit.
The above is only some embodiments of the invention, it is noted that for the ordinary skill people of the art
For member, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications are also answered
It is considered as protection scope of the present invention.
Claims (10)
1. a kind of nonlinear Control managing device of piezoelectric energy acquisition, which is characterized in that the piezoelectric energy acquires non-thread
Property control managing device include resonance matching circuit, rectification circuit, storage capacitor CD, control circuit and power end, the tune
Humorous match circuit includes PZT (piezoelectric transducer) and the up-conversion switching circuit connecting with the PZT (piezoelectric transducer), the resonance matching electricity
Road is connect by the up-converter circuit with the control circuit；The input side of the rectification circuit and up-conversion switch electricity
Road connection, the outlet side of the rectification circuit are connect with one end of the storage capacitor CD, the other end of the storage capacitor CD
It is connect with the control circuit.
2. the nonlinear Control managing device of piezoelectric energy acquisition as described in claim 1, which is characterized in that the piezoelectricity changes
Energy device is the parallel connection of current source Is and capacitor Cs, the cathode ground connection of the current source Is；The up-converter circuit includes non-linear
Devices switch S1, sampling resistor RS2 and transformer T1, wherein
One end of the nonlinear device switch S1 is connect with the anode of the current source Is, the nonlinear device switch S1's
The other end is connect with the upper end of the transformer T1 input side, the nonlinear Control end of the nonlinear device switch S1 with it is described
Control circuit connection；
One end of the sampling resistor RS2 is connect with the cathode of the current source Is, the lower end of the transformer T1 input side, control
Circuit processed is connect with the other end of the sampling resistor RS2 respectively；
The transformer T1 outlet side is connect with the input side of the rectification circuit.
3. the nonlinear Control managing device of piezoelectric energy acquisition as claimed in claim 2, which is characterized in that the control electricity
Road includes clock unit, control pulse-generating circuit, the first control unit for detecting Maximum Power Output, is used to judge most
The second control unit, switch S3 and the resistance R2 being connect with power end of big energy converter output electric current, wherein
The nonlinear Control end of the nonlinear device switch S1, clock unit, switch S3 are generated with the control pulse respectively
Circuit connection；
The first control unit includes the Peak current connecting with the other end of storage capacitor CD, connect with the Peak current
Filtering and amplifying circuit, second control unit includes the peak value dot circuit connecting with the other end of the sampling resistor RS2
And comparison circuit is kept with the sampling of the peak point circuit connection, the switch S3 includes generating electricity with the control pulse
The common end of road connection, the switch control terminal connecting with the sampling holding comparison circuit are connect with the filtering and amplifying circuit
Movable end a and the movable end b that is connect with the power end by the resistance R2；
The sampling keeps comparison circuit to connect with the power end.
4. the nonlinear Control managing device of piezoelectric energy acquisition as claimed in claim 3, which is characterized in that the control arteries and veins
Rushing generation circuit includes control comparator U4 and capacitor C4；
The control comparator U4 include the control output end being connect with the nonlinear Control end of the nonlinear device switch S1,
Pass through the capacitor C4 cathode control signal being grounded and the positive control signal connecting with the clock unit；
The control pulse-generating circuit is connect by the cathode control signal with the common end of the switch S3.
5. the nonlinear Control managing device of piezoelectric energy acquisition as claimed in claim 4, which is characterized in that the peak value electricity
Road includes sampling resistor RS1, diode D1, capacitor C1 and peak comparator U1；The peak comparator U1 includes that peak value is defeated
Outlet, positive peak value input terminal and the cathode peak value input terminal being connect with the peak output terminal；
One end of the sampling resistor RS1 is connect with the other end of the storage capacitor CD, the other end of the sampling resistor RS1
Ground connection；
The anode of the diode D1 is connected to the junction of the sampling resistor RS1 Yu the storage capacitor CD, two pole
The cathode of pipe D1 is connect with the positive peak value input terminal of the peak comparator U1；
One end of the capacitor C1 is connected to the cathode of the diode D1 and the junction of the positive peak value input terminal, described
The other end of capacitor C1 is grounded.
6. the nonlinear Control managing device of piezoelectric energy acquisition as claimed in claim 5, which is characterized in that the amplification filter
Wave circuit include amplification filter comparator U5, resistance R5, resistance R6, resistance R3, the capacitor C5 in parallel with the resistance R3 and
Resistance R4, wherein
The amplification filter comparator U5 includes amplification filtering output end, cathode amplification filter input and anode amplification filtering
Input terminal, the amplification filter comparator U5 are connect by the amplification filtering output end with the movable end a；
One end of the resistance R3 is connected to the junction of the movable end a and the amplification filtering output end, the resistance R3
The other end connect with one end of the resistance R4, one end of resistance R4 ground connection；
The cathode amplification filter input is connected to the junction of the resistance R3 Yu the resistance R4；
One end of the resistance R6 is connect with the anode amplification filter input, the peak of the other end and the peak comparator U1
It is worth output end connection；
One end of the resistance R5 is connected to the junction of the resistance R6 and the anode amplification filter input, another termination
Ground.
7. the nonlinear Control managing device of piezoelectric energy acquisition as claimed in claim 6, which is characterized in that the peak point
Circuit includes peak point comparator U2, capacitor C2 and diode D2；
The peak point comparator U2 includes peak point output end, the cathode peak point for keeping comparison circuit to connect with the sampling
Input terminal and the connection sampling resistor RS2 and the positive peak point of the junction of the lower end of the transformer T1 input side are defeated
Enter end；
The cathode of the diode D2 is connect with the cathode peak point input terminal, and the anode of the diode D2 is also connected to institute
State the junction of the lower end of sampling resistor RS2 and the transformer T1 input side；
One end of the capacitor C2 is connect with the cathode peak point input terminal, other end ground connection.
8. the nonlinear Control managing device of piezoelectric energy acquisition as claimed in claim 7, which is characterized in that the sampling is protected
Holding comparison circuit includes that sampling keeps comparator U3, sample-hold switch S2, capacitor C3, resistance R1 and reference voltage terminal
Vref；It includes the sampling holding output end, just connecting with the switch control terminal of the switch S3 that the sampling, which keeps comparator U3,
Pole sampling keeps input terminal and the cathode connecting with reference voltage terminal Vref sampling to keep input terminal；
The anode sampling keeps input terminal to connect with one end of the sample-hold switch S2, the sample-hold switch S2's
The other end is connect with the clock unit, and the sampling of the sample-hold switch S2 keeps control terminal and the peak point comparator
The peak point output end of U2 connects；
One end of the capacitor C3 is connected to the junction that the anode sampling keeps input terminal and the sample-hold switch S2,
Other end ground connection；
One end of the resistance R1 be connected to the switch S3 and the sampling holding output end junction, the other end then with power supply
End connection.
9. the nonlinear Control managing device of piezoelectric energy acquisition as claimed in claim 2, which is characterized in that the control electricity
Road includes clock unit, control pulse-generating circuit, the second control unit for judging maximum energy converter output electric current；
Second control unit include the peak value dot circuit being connect with the other end of the sampling resistor RS2 and with the peak
The sampling for being worth dot circuit connection keeps comparison circuit；The clock unit, sampling keep comparison circuit, nonlinear device switch S1
Nonlinear Control end connect respectively with the control pulse-generating circuit；The sampling keeps comparison circuit and the power end
Connection.
10. the nonlinear Control managing device of piezoelectric energy acquisition as claimed in claim 9, which is characterized in that the sampling
Keeping comparison circuit includes that sampling keeps comparator, and the control pulse-generating circuit includes control comparator, and the sampling is protected
The output end for holding comparator is connect with the output end of the control comparator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910125665.8A CN109787334B (en) | 2019-02-20 | 2019-02-20 | Nonlinear control management device for piezoelectric energy collection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910125665.8A CN109787334B (en) | 2019-02-20 | 2019-02-20 | Nonlinear control management device for piezoelectric energy collection |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109787334A true CN109787334A (en) | 2019-05-21 |
| CN109787334B CN109787334B (en) | 2020-08-04 |
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| CN113824310A (en) * | 2021-08-29 | 2021-12-21 | 西北工业大学太仓长三角研究院 | Acquisition-management single-stage fusion circuit for mechanical energy and control method thereof |
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| CN113824310A (en) * | 2021-08-29 | 2021-12-21 | 西北工业大学太仓长三角研究院 | Acquisition-management single-stage fusion circuit for mechanical energy and control method thereof |
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| CN114844203A (en) * | 2022-06-10 | 2022-08-02 | 国网智能电网研究院有限公司 | Self-power supply device of transformer substation |
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