CN103219894B - Ultra-low-voltage boosting system and control method thereof - Google Patents
Ultra-low-voltage boosting system and control method thereof Download PDFInfo
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- CN103219894B CN103219894B CN201310161973.9A CN201310161973A CN103219894B CN 103219894 B CN103219894 B CN 103219894B CN 201310161973 A CN201310161973 A CN 201310161973A CN 103219894 B CN103219894 B CN 103219894B
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Abstract
The invention relates to an ultra-low-voltage boosting system and a control method thereof. The ultra-low-voltage boosting system comprises an open-circuit voltage sampling holder, a polarity detection and control signal generator, a first-level switch tube, a flyback transformer, a rectifier bridge, an energy storage element and a singlechip, wherein the open-circuit voltage sampling holder is connected with a weak-energy output source or an energy converter and is also connected with the singlechip, the polarity detection and control signal generator and the flyback transformer; the first-level switch tube is connected with the polarity detection and control signal generator and the flyback transformer; the flyback transformer is connected with the rectifier bridge; and the rectifier bridge is connected with the energy storage element. By combining the ultra-low-voltage boosting system with the control method thereof, the defect that the circuit produced by a conventional process has difficulty in adapting to the working under a millivolt-level voltage in the field of environmental energy collection can be effectively avoided, and the defects that the boosting multiple and the boosting efficiency are very difficultly considered simultaneously in the prior art and the problem that an positive-negative bipolar input source is unresolved can be avoided.
Description
Technical field
The invention belongs to voltage transitions and power module technical field, be specifically related to a kind of ultralow pressure booster system and control method thereof, particularly relate to a kind of ultralow pressure booster system and control method thereof of environmental energy assembling sphere, the weak voltage signals that can export the output source of faint energy or transducer carries out boosting and stores, and powers for a long time for low power consuming devices such as wireless sensers.
Background technology
Because the input voltage of power supply voltage converter is more and more lower, even only have the cut-in voltage of tens mV, and the conversion efficiency of self also affects the utilance of electric energy.For extremely faint electric energy output source, such as heat energy (solar thermal energy, underground heat, variations in temperature etc.) transducer, electromagnetic energy (light, electromagnetic wave etc.) transducer, kinetic energy (wind, vibration etc.) the faint energy that exports of the transducer such as transducer, carry out rectification, boosting, enable to be battery charging effectively, it is very difficult for powering for a long time for sensor low power consuming devices, especially in environmental energy is collected, because environmental energy is very faint, ultralow pressure boosting and boost power conversion are the technological difficulties of environmental energy assembling sphere, mainly there is following shortcoming in the prior art of such environmental energy assembling sphere:
First, ultralow pressure boosting needs rectifying device and the switching device of low voltage operating.The about hundreds of millivolt of wherein traditional diode turn-on voltage, metal-oxide-semiconductor needs the turning-on voltage of volt level, works under collection of energy millivolt step voltage because the circuit of traditional handicraft is difficult to conform.
Secondly, prior art is difficult to take into account boosting multiple and boosting efficiency simultaneously, and not yet solves the problem of positive and negative bipolarity input source.
Summary of the invention
The invention provides a kind of ultralow pressure booster system and control method thereof, comprise open circuit voltage sampling holder, Check up polarity and control signal generator, one-level switching tube, flyback transformer, rectifier bridge, energy-storage travelling wave tube and single-chip microcomputer, described open circuit voltage sampling holder is connected with the output source of faint energy or transducer, open circuit voltage sampling holder also same single-chip microcomputer in addition, Check up polarity is connected with control signal generator and flyback transformer, described one-level switching tube same polarity Detection & Controling signal generator and flyback transformer are connected, flyback transformer is connected with rectifier bridge, rectifier bridge is connected with energy-storage travelling wave tube.And effectively avoid the circuit of traditional handicraft to be difficult to conform the defect worked under collection of energy millivolt step voltage in conjunction with its control method, and prior art can be avoided simultaneously to be difficult to take into account boosting multiple and boosting efficiency and not yet to solve the defect of the problem of positive negative bipolar input source.
For achieving the above object, technical scheme of the present invention is:
A kind of ultralow pressure booster system, comprise open circuit voltage sampling holder 102, Check up polarity and control signal generator 103, one-level switching tube 104, flyback transformer 105, rectifier bridge 106, energy-storage travelling wave tube 107 and single-chip microcomputer 108, described open circuit voltage sampling holder 102 is connected with the output source of faint energy or transducer 101, open circuit voltage sampling holder 102 is also with single-chip microcomputer 108 in addition, Check up polarity is connected with control signal generator 103 and flyback transformer 105, described one-level switching tube 104 same polarity Detection & Controling signal generator 103 and flyback transformer 105 are connected, flyback transformer 105 is connected with rectifier bridge 106, rectifier bridge 106 is connected with energy-storage travelling wave tube 107.
Described single-chip microcomputer 108 adopts Micro Energy Lose chip, and the chip that single-chip microcomputer 108 also can have processing capacity by other in addition substitutes; One-level switching tube 104 adopts input capacitance C
issbe less than 235pF and conducting resistance R
dS (ON)be less than the metal-oxide-semiconductor of 90m Ω; Flyback transformer 105 adopts EI magnetic core and selects adaptive inductance value to enable ultralow pressure booster system be operated in interrupted or critical conduction mode; Four diode selecting conduction voltage drops of rectifier bridge 106 are lower than the diode of 0.4V.
Described open circuit voltage sampling holder 102 comprises open circuit voltage sampler 201, inhibit signal HOLD control switching tube 202, voltage divider 203 and holding capacitor 204, described open circuit voltage sampler 201 is connected with voltage divider 203 with inhibit signal HOLD control switching tube 202, described holding capacitor 204 is also connected with voltage divider 203 with inhibit signal HOLD control switching tube 202, and described open circuit voltage sampler 201 comprises interconnective open circuit voltage sampler switching tube Q2 and open circuit voltage sampler electric capacity C1; Described voltage divider 203 comprises interconnective voltage divider the first switching tube Q4 and is connected with voltage divider electric capacity C2, and this voltage divider electric capacity C2 is also connected with voltage divider second switch pipe Q3.
Described Check up polarity and control signal generator 103 comprise malleation and detection of negative pressure device 301, passage bridge bridge 302 and hysteresis comparator 303, malleation is connected with passage bridge bridge 302 with detection of negative pressure device 301, passage bridge bridge 302 is connected with hysteresis comparator 303, described malleation and detection of negative pressure device 301 comprise the malleation and detection of negative pressure device comparator V1 that are connected in turn, malleation and detection of negative pressure device the first resistance R1, malleation and detection of negative pressure device metal-oxide-semiconductor Q0 and malleation and detection of negative pressure device the second resistance R2, described passage bridge bridge 302 comprises passage bridge bridge the first metal-oxide-semiconductor O1, passage bridge bridge the first metal-oxide-semiconductor O1 is connected with passage bridge bridge the 3rd metal-oxide-semiconductor O3 with passage bridge bridge the second metal-oxide-semiconductor O2, passage bridge bridge the 4th metal-oxide-semiconductor O4 is also connected with passage bridge bridge the 3rd metal-oxide-semiconductor O3 with passage bridge bridge the second metal-oxide-semiconductor O2, described hysteresis comparator 303 comprises operational amplifier V2, this operational amplifier V2 is with hysteresis comparator the first resistance R3, hysteresis comparator the second resistance R5 and adjustable resistance R4 is connected, hysteresis comparator the second resistance R5 is serially connected with hysteresis comparator electric capacity C11.
The control method of described ultralow pressure booster system be described open circuit voltage sampling holder 102 under the control of the output sampled signal SAMP of single-chip microcomputer 108, to the output source of faint energy or the output voltage U of transducer 101
isample, open circuit voltage sampling holder 102 also, under the control of the output inhibit signal HOLD of single-chip microcomputer 108, is got half to the output source of faint energy or the open circuit voltage of transducer 101, is obtained the output source of faint energy or the open circuit voltage V of transducer 101
oChalf, i.e. V
oCthe voltage of/2 outputs to the input of Check up polarity and control generator 103; Open circuit voltage sampling holder 102 derives the operating voltage U of faint Energy transmission source or transducer 101 simultaneously
1output in the Same Name of Ends of flyback transformer 105 and Check up polarity and control generator 103; First Check up polarity described like this and control signal generator 103 detect the positive-negative polarity of the output voltage Ui of faint Energy transmission source or transducer 101, and the faint Energy transmission source of open-circuit voltage sampling holder 102 output or the operating voltage U of transducer 101
1and V
oCthe voltage of/2 compares, according to the result compared, then Check up polarity and control signal generator 103 export the grid of corresponding control signal CTRL to one-level switching tube 104 for controlling opening or turning off of one-level switching tube 104, thus control the operating state of flyback transformer 105, make flyback transformer 105 in conjunction with the operating voltage U of faint Energy transmission source or transducer 101
1and perform respectively when the opening or turn off of one-level switching tube 104 and release energy or the process of storage power, when flyback transformer 105 output AC in the process of releasing energy is electric in rectifier bridge 106, rectifier bridge 106 will derive direct current to energy-storage travelling wave tube 107 after this AC rectification, this galvanic electric energy is carried out energy storage by energy-storage travelling wave tube 107.
The described output source to faint energy or the open circuit voltage of transducer 101 process partly of getting is that open circuit voltage sampler 201 is under the high level exporting sampled signal SAMP controls, at this moment open circuit voltage sampler switching tube Q2 opens and charges with open circuit voltage sampler electric capacity C1, now inhibit signal HOLD control switching tube 202 turns off under the low level control exporting inhibit signal HOLD, and voltage divider is opened with the first switching tube Q4 and voltage divider electric capacity C2 discharges, then under the high level exporting inhibit signal HOLD controls, inhibit signal HOLD control switching tube 202 is open-minded, the operating voltage U of faint like this Energy transmission source or transducer 101
1output follow the output source of faint energy or the output voltage U of transducer 101
isuch voltage divider second switch pipe Q3 opens and voltage divider the first switching tube Q4 turns off, and open circuit voltage sampler switching tube Q2 turns off, now open circuit voltage sampler electric capacity C1 and voltage divider electric capacity C2 forms loop, and open circuit voltage sampler 201 exports V thus
oCthe voltage of/2.
It is described that according to the result compared, then Check up polarity and control signal generator 103 export corresponding control signal CTRL to the course of work of the grid of one-level switching tube 104 is that first malleation and detection of negative pressure device 301 detect the output source of the faint energy accessed or the output voltage U of transducer 101
i, as the output source of faint energy or the output voltage U of transducer 101
iduring >0V, malleation and the detection of negative pressure device output signal U of comparator V1
pfor high level; As the output source of faint energy or the output voltage U of transducer 101
iduring <0V, malleation and the detection of negative pressure device output signal U of comparator V1
pfor low level, malleation and detection of negative pressure device as inverter, make the output voltage U of malleation and detection of negative pressure device metal-oxide-semiconductor Q0 with metal-oxide-semiconductor Q0
nwith malleation and the detection of negative pressure device output signal U with comparator V1
pkeep contrary level, when the detection of negative pressure device output signal U of comparator V1
pduring >0, passage bridge bridge the first metal-oxide-semiconductor O1 and the 4th metal-oxide-semiconductor O4 conducting of passage bridge bridge, output to the anti-phase input end signal I-=V of operational amplifier V2 like this
oC/ 2, and the normal phase input end signal I+=U outputting to operational amplifier V2
1; As malleation and the detection of negative pressure device output voltage U of metal-oxide-semiconductor Q0
nduring >0, passage bridge bridge the second metal-oxide-semiconductor O2 and the 3rd metal-oxide-semiconductor O3 conducting of passage bridge bridge, output to the anti-phase input end signal I-=U of operational amplifier V2 like this
1, and output to the normal phase input end signal I+=V of operational amplifier V2
oC/ 2, then hysteresis comparator 303 compares the voltage swing of the normal phase input end signal I+ outputting to operational amplifier V2 and the anti-phase input end signal I-outputting to operational amplifier V2, and according to the result compared, then Check up polarity and control signal generator 103 export the grid of corresponding control signal CTRL to one-level switching tube 104.
Described is work as controlling the judgment mode opened or turn off of one-level switching tube 104 | U
1| >| V
oCduring/2|, one-level switching tube 104 is open-minded, when | U
1| <| V
oCduring/2|, one-level switching tube 104 turns off.
Described hysteresis comparator 303 adopts working-point maximal power tracing algorithm, in the scope namely set near maximum power point, sets two quiescent potentials and is respectively the first quiescent potential V
hwith the second quiescent potential V
l, in a switching process, working point is at the first quiescent potential V
hwith the second quiescent potential V
lbetween jump, in charging process, the output source of faint energy or the output voltage U of transducer 101
irise gradually, working point is by the second quiescent potential V
lrise to the first quiescent potential V
h, when working point rises to the first quiescent potential V
hafter, by open-minded for one-level switching tube 104, the output source of faint energy or the output voltage U of transducer 101
iwill decline, when working point drops to the second quiescent potential V
ltime, one-level switching tube 104 turns off, and can also complete the process that primary energy transmits thus.
The present invention also tool has the following advantages:
1. under Micro Energy Lose environment, use maximal power tracing point technology, use analog circuit to complete track algorithm, maximum functional point is replaced with maximum functional region, use lower switching frequency to control, thus reduce switching loss, conversion efficiency is further improved;
2. input source minimum voltage is low, and minimum input positive voltage is 36.5mV, and minimum input negative voltage amplitude is 35mV, and boosting multiple is large, and the highest boosting multiple can reach 120, and boosting efficiency is high, and converter peak efficiency can reach 80%;
3. solve positive and negative bipolarity input source problem, achieve and negative voltage is boosted.
Accompanying drawing explanation
Fig. 1 is the schematic block diagram of ultralow pressure booster system of the present invention;
Fig. 2 is the theory structure schematic diagram of open circuit voltage sampling holder of the present invention;
Fig. 3 is Check up polarity of the present invention and control signal generator circuit schematic diagram;
Fig. 4 is the coordinate diagram of working-point maximal power tracing algorithm, and wherein the P of ordinate represents the power output of transducer.
Embodiment
Below by specific embodiment, the utility model is described further:
As shown in Figure 1, ultralow pressure booster system, comprise open circuit voltage sampling holder 102, Check up polarity and control signal generator 103, one-level switching tube 104, flyback transformer 105, rectifier bridge 106, energy-storage travelling wave tube 107 and single-chip microcomputer 108, described open circuit voltage sampling holder 102 is connected with the output source of faint energy or transducer 101, open circuit voltage sampling holder 102 is also connected with control signal generator 103 and flyback transformer 105 with single-chip microcomputer 108, Check up polarity in addition, and single-chip microcomputer 108 is for exporting sampled signal SAMP and inhibit signal HOLD; Described one-level switching tube 104 same polarity Detection & Controling signal generator 103 and flyback transformer 105 are connected, flyback transformer 105 is connected with rectifier bridge 106, rectifier bridge 106 is connected with energy-storage travelling wave tube 107, rectifier bridge 106 exports direct current, for energy-storage travelling wave tube storage power for the AC rectification exported by flyback transformer; Energy-storage travelling wave tube 107, for the electrical power storage exported by rectifier bridge, is powered for a long time for low power dissipation electron equipment such as wireless sensor nodes.Described single-chip microcomputer 108 adopts Micro Energy Lose chip, and the chip that single-chip microcomputer 108 also can have processing capacity by other in addition substitutes; One-level switching tube 104 adopts input capacitance C
issbe less than 235pF and conducting resistance R
dS (ON)be less than the metal-oxide-semiconductor of 90m Ω; Flyback transformer 105 adopts EI magnetic core and selects adaptive inductance value to enable ultralow pressure booster system be operated in interrupted or critical conduction mode; Four diode selecting conduction voltage drops of rectifier bridge 106 are lower than the diode of 0.4V.Described open circuit voltage sampling holder 102 comprises open circuit voltage sampler 201, inhibit signal HOLD control switching tube 202, voltage divider 203 and holding capacitor 204, described open circuit voltage sampler 201 is connected with voltage divider 203 with inhibit signal HOLD control switching tube 202, described holding capacitor 204 is also connected with voltage divider 203 with inhibit signal HOLD control switching tube 202, and described open circuit voltage sampler 201 comprises interconnective open circuit voltage sampler switching tube Q2 and open circuit voltage sampler electric capacity C1; Described voltage divider 203 comprises interconnective voltage divider the first switching tube Q4 and is connected with voltage divider electric capacity C2, and this voltage divider electric capacity C2 is also connected with voltage divider second switch pipe Q3.Described Check up polarity and control signal generator 103 comprise malleation and detection of negative pressure device 301, passage bridge bridge 302 and hysteresis comparator 303, malleation is connected with passage bridge bridge 302 with detection of negative pressure device 301, passage bridge bridge 302 is connected with hysteresis comparator 303, described malleation and detection of negative pressure device 301 comprise the malleation and detection of negative pressure device comparator V1 that are connected in turn, malleation and detection of negative pressure device the first resistance R1, malleation and detection of negative pressure device metal-oxide-semiconductor Q0 and malleation and detection of negative pressure device the second resistance R2, described passage bridge bridge 302 comprises passage bridge bridge the first metal-oxide-semiconductor O1, passage bridge bridge the first metal-oxide-semiconductor O1 is connected with passage bridge bridge the 3rd metal-oxide-semiconductor O3 with passage bridge bridge the second metal-oxide-semiconductor O2, passage bridge bridge the 4th metal-oxide-semiconductor O4 is also connected with passage bridge bridge the 3rd metal-oxide-semiconductor O3 with passage bridge bridge the second metal-oxide-semiconductor O2, described hysteresis comparator 303 comprises operational amplifier V2, this operational amplifier V2 is with hysteresis comparator the first resistance R3, hysteresis comparator the second resistance R5 and adjustable resistance R4 is connected, hysteresis comparator the second resistance R5 is serially connected with hysteresis comparator electric capacity C11.
The control method of described ultralow pressure booster system be described open circuit voltage sampling holder 102 under the control of the output sampled signal SAMP of single-chip microcomputer 108, to the output source of faint energy or the output voltage U of transducer 101
isample, open circuit voltage sampling holder 102 also, under the control of the output inhibit signal HOLD of single-chip microcomputer 108, is got half to the output source of faint energy or the open circuit voltage of transducer 101, is obtained the output source of faint energy or the open circuit voltage V of transducer 101
oChalf, i.e. V
oCthe voltage of/2 outputs to the input of Check up polarity and control generator 103; Open circuit voltage sampling holder 102 derives the operating voltage U of faint Energy transmission source or transducer 101 simultaneously
1output in the Same Name of Ends of flyback transformer 105 and Check up polarity and control generator 103; First Check up polarity described like this and control signal generator 103 detect the positive-negative polarity of the output voltage Ui of faint Energy transmission source or transducer 101, and the faint Energy transmission source of open-circuit voltage sampling holder 102 output or the operating voltage U of transducer 101
1and V
oCthe voltage of/2 compares, according to the result compared, then Check up polarity and control signal generator 103 export the grid of corresponding control signal CTRL to one-level switching tube 104 for controlling opening or turning off of one-level switching tube 104, thus control the operating state of flyback transformer 105, make flyback transformer 105 in conjunction with the operating voltage U of faint Energy transmission source or transducer 101
1and perform respectively when the opening or turn off of one-level switching tube 104 and release energy or the process of storage power, when flyback transformer 105 output AC in the process of releasing energy is electric in rectifier bridge 106, rectifier bridge 106 will derive direct current to energy-storage travelling wave tube 107 after this AC rectification, this galvanic electric energy is carried out energy storage by energy-storage travelling wave tube 107.The described output source to faint energy or the open circuit voltage of transducer 101 process partly of getting is that open circuit voltage sampler 201 is under the high level exporting sampled signal SAMP controls, at this moment open circuit voltage sampler switching tube Q2 opens and charges with open circuit voltage sampler electric capacity C1, now inhibit signal HOLD control switching tube 202 turns off under the low level control exporting inhibit signal HOLD, and voltage divider is opened with the first switching tube Q4 and voltage divider electric capacity C2 discharges, then under the high level exporting inhibit signal HOLD controls, inhibit signal HOLD control switching tube 202 is open-minded, the operating voltage U of faint like this Energy transmission source or transducer 101
1output follow the output source of faint energy or the output voltage U of transducer 101
isuch voltage divider second switch pipe Q3 opens and voltage divider the first switching tube Q4 turns off, and open circuit voltage sampler switching tube Q2 turns off, now open circuit voltage sampler electric capacity C1 and voltage divider electric capacity C2 forms loop, and open circuit voltage sampler 201 exports V thus
oCthe voltage of/2.It is described that according to the result compared, then Check up polarity and control signal generator 103 export corresponding control signal CTRL to the course of work of the grid of one-level switching tube 104 is that first malleation and detection of negative pressure device 301 detect the output source of the faint energy accessed or the output voltage U of transducer 101
i, as the output source of faint energy or the output voltage U of transducer 101
iduring >0V, malleation and the detection of negative pressure device output signal U of comparator V1
pfor high level; As the output source of faint energy or the output voltage U of transducer 101
iduring <0V, malleation and the detection of negative pressure device output signal U of comparator V1
pfor low level, malleation and detection of negative pressure device as inverter, make the output voltage U of malleation and detection of negative pressure device metal-oxide-semiconductor Q0 with metal-oxide-semiconductor Q0
nwith malleation and the detection of negative pressure device output signal U with comparator V1
pkeep contrary level, when the detection of negative pressure device output signal U of comparator V1
pduring >0, passage bridge bridge the first metal-oxide-semiconductor O1 and the 4th metal-oxide-semiconductor O4 conducting of passage bridge bridge, output to the anti-phase input end signal I-=V of operational amplifier V2 like this
oC/ 2, and the normal phase input end signal I+=U outputting to operational amplifier V2
1; As malleation and the detection of negative pressure device output voltage U of metal-oxide-semiconductor Q0
nduring >0, passage bridge bridge the second metal-oxide-semiconductor O2 and the 3rd metal-oxide-semiconductor O3 conducting of passage bridge bridge, output to the anti-phase input end signal I-=U of operational amplifier V2 like this
1, and output to the normal phase input end signal I+=V of operational amplifier V2
oC/ 2, then hysteresis comparator 303 compares the voltage swing of the normal phase input end signal I+ outputting to operational amplifier V2 and the anti-phase input end signal I-outputting to operational amplifier V2, and according to the result compared, then Check up polarity and control signal generator 103 export the grid of corresponding control signal CTRL to one-level switching tube 104.Described is work as controlling the judgment mode opened or turn off of one-level switching tube 104 | U
1| >| V
oCduring/2|, one-level switching tube 104 is open-minded, when | U
1| <| V
oCduring/2|, one-level switching tube 104 turns off.Described hysteresis comparator 303 adopts working-point maximal power tracing algorithm, in the scope namely set near maximum power point, sets two quiescent potentials and is respectively the first quiescent potential V
hwith the second quiescent potential V
l, in a switching process, working point is at the first quiescent potential V
hwith the second quiescent potential V
lbetween jump, in charging process, the output source of faint energy or the output voltage U of transducer 101
irise gradually, working point is by the second quiescent potential V
lrise to the first quiescent potential V
h, when working point rises to the first quiescent potential V
hafter, by open-minded for one-level switching tube 104, the output source of faint energy or the output voltage U of transducer 101
iwill decline, when working point drops to the second quiescent potential V
ltime, one-level switching tube 104 turns off, and can also complete the process that primary energy transmits thus.
This embodiment is only illustrate reference of the present invention, does not form any restriction to content of the present invention.
Claims (9)
1. a ultralow pressure booster system, is characterized in that comprising: open circuit voltage sampling holder (102), Check up polarity and control signal generator (103), one-level switching tube (104), flyback transformer (105), rectifier bridge (106), energy-storage travelling wave tube (107) and single-chip microcomputer (108);
Described open circuit voltage sampling holder (102), for the output source of faint energy or the output signal U of transducer (101)
isample, the output source of a rood to faint energy or the open circuit voltage V of transducer (101)
oChalf, i.e. V
oCthe voltage of/2 outputs to the input of Check up polarity and control signal generator (103), and another rood is to the operating voltage U of faint Energy transmission source or transducer (101)
1output in the Same Name of Ends of flyback transformer (105) and Check up polarity and control signal generator (103);
Described single-chip microcomputer (108), for exporting sampled signal SAMP and exporting inhibit signal HOLD to open circuit voltage sampling holder (102);
Described Check up polarity and control signal generator (103), for the output source of faint energy or the output signal U of transducer (101)
ipolarity judge, and according to the U that open circuit voltage sampling holder (102) exports
1and V
oC/ 2 determine to export control signal CTRL to one-level switching tube (104) jointly, for controlling the judgment mode opened or turn off of one-level switching tube (104) for working as | U
1| >| V
oCduring/2|, one-level switching tube (104) is open-minded, when | U
1| <| V
oCduring/2|, one-level switching tube (104) turns off;
Described flyback transformer (105), for being used for storing and releasing energy under the control of opening with turning off of one-level switching tube (104), the output AC signal of telecommunication is to rectifier bridge (106);
Described rectifier bridge (106), is rectified into DC signal for the ac signal exported by flyback transformer (105), outputs to energy-storage travelling wave tube (107);
Described energy-storage travelling wave tube (107), carries out energy storage for the galvanic electric energy exported by rectifier bridge (106).
2. ultralow pressure booster system according to claim 1, it is characterized in that described single-chip microcomputer (108) adopts Micro Energy Lose chip, the chip that single-chip microcomputer (108) also can have processing capacity by other in addition substitutes; One-level switching tube (104) adopts input capacitance C
issbe less than 235pF and conducting resistance R
dS (ON)be less than the metal-oxide-semiconductor of 90m Ω; Flyback transformer (105) adopts EI magnetic core and selects adaptive inductance value to enable ultralow pressure booster system be operated in interrupted or critical conduction mode; Four diode selecting conduction voltage drops of rectifier bridge (106) are lower than the diode of 0.4V.
3. according to ultralow pressure booster system according to claim 1 or claim 2, it is characterized in that described open circuit voltage sampling holder (102) comprises open circuit voltage sampler (201), inhibit signal HOLD controls with switching tube (202), voltage divider (203) and holding capacitor (204), described open circuit voltage sampler (201) is connected with voltage divider (203) with inhibit signal HOLD control switching tube (202), described holding capacitor (204) is also connected with voltage divider (203) with inhibit signal HOLD control switching tube (202), described open circuit voltage sampler (201) comprises interconnective open circuit voltage sampler switching tube (Q2) and open circuit voltage sampler electric capacity (C1), described voltage divider (203) comprises interconnective voltage divider the first switching tube (Q4) and is connected with voltage divider electric capacity (C2), and this voltage divider electric capacity (C2) is also connected with voltage divider second switch pipe (Q3).
4. ultralow pressure booster system according to claim 3, it is characterized in that described Check up polarity and control signal generator (103) comprise malleation and detection of negative pressure device (301), passage bridge bridge (302) and hysteresis comparator (303), malleation is connected with passage bridge bridge (302) with detection of negative pressure device (301), passage bridge bridge (302) same to hysteresis comparator (303) is connected, described malleation and detection of negative pressure device (301) comprise the malleation and detection of negative pressure device comparator (V1) that are connected in turn, malleation and detection of negative pressure device are with the first resistance (R1), malleation and detection of negative pressure device metal-oxide-semiconductor (Q0) and malleation and detection of negative pressure device the second resistance (R2), described passage bridge bridge (302) comprises passage bridge bridge the first metal-oxide-semiconductor (O1), passage bridge bridge the first metal-oxide-semiconductor (O1) is connected with passage bridge bridge the 3rd metal-oxide-semiconductor (O3) with passage bridge bridge the second metal-oxide-semiconductor (O2), passage bridge bridge the 4th metal-oxide-semiconductor (O4) is also connected with passage bridge bridge the 3rd metal-oxide-semiconductor (O3) with passage bridge bridge the second metal-oxide-semiconductor (O2), described hysteresis comparator (303) comprises operational amplifier (V2), this operational amplifier (V2) with hysteresis comparator with the first resistance (R3), hysteresis comparator the second resistance (R5) and adjustable resistance (R4) are connected, hysteresis comparator the second resistance (R5) is serially connected with hysteresis comparator electric capacity (C11).
5. the control method of a ultralow pressure booster system according to claim 4, it is characterized by described open circuit voltage sampling holder (102) under the control of the output sampled signal SAMP of single-chip microcomputer (108), to the output source of faint energy or the output voltage U of transducer (101)
isample, open circuit voltage sampling holder (102) under the control of the output inhibit signal HOLD of single-chip microcomputer (108), to the output source of faint energy or the open circuit voltage V of transducer (101)
oCget half, obtain the output source of faint energy or the open circuit voltage V of transducer (101)
oChalf, i.e. V
oCthe voltage of/2 outputs to the input of Check up polarity and control signal generator (103); Open circuit voltage sampling holder (102) derives the operating voltage U of faint Energy transmission source or transducer (101) simultaneously
1output in the Same Name of Ends of flyback transformer (105) and Check up polarity and control signal generator (103); Check up polarity described like this and control signal generator (103) first detect the positive-negative polarity of the output voltage Ui of faint Energy transmission source or transducer (101), and the operating voltage U of the faint Energy transmission source that exports of open-circuit voltage sampling holder (102) or transducer (101)
1and V
oCthe voltage of/2 compares, according to the result compared, then Check up polarity and control signal generator (103) export the grid of corresponding control signal CTRL to one-level switching tube (104) for controlling opening or turning off of one-level switching tube (104), thus control the operating state of flyback transformer (105), make flyback transformer (105) in conjunction with the operating voltage U of faint Energy transmission source or transducer (101)
1and perform respectively when the opening or turn off of one-level switching tube (104) and release energy or the process of storage power, when flyback transformer (105) output AC electricity in the process of releasing energy arrives in rectifier bridge (106), rectifier bridge (106) will derive direct current to energy-storage travelling wave tube (107) after this AC rectification, this galvanic electric energy is carried out energy storage by energy-storage travelling wave tube (107).
6. the control method of ultralow pressure booster system according to claim 5, the open circuit voltage Voc process partly of getting that it is characterized by the described output source to faint energy or transducer (101) is that open circuit voltage sampler (201) is under the high level exporting sampled signal SAMP controls, at this moment open circuit voltage sampler switching tube (Q2) is opened and charges with open circuit voltage sampler electric capacity (C1), now inhibit signal HOLD control switching tube (202) turns off under the low level control exporting inhibit signal HOLD, and voltage divider is opened with the first switching tube (Q4) and voltage divider electric capacity (C2) electric discharge, then under the high level exporting inhibit signal HOLD controls, inhibit signal HOLD control switching tube (202) is open-minded, the operating voltage U of faint like this Energy transmission source or transducer (101)
1output follow the output source of faint energy or the output voltage U of transducer (101)
isuch voltage divider second switch pipe (Q3) is opened and voltage divider the first switching tube (Q4) turns off, and open circuit voltage sampler switching tube (Q2) turns off, now open circuit voltage sampler electric capacity (C1) and voltage divider electric capacity (C2) form loop, and open circuit voltage sampler (201) exports V thus
oCthe voltage of/2.
7. the control method of ultralow pressure booster system according to claim 5, it is characterized by described according to the result compared then Check up polarity export the grid of corresponding control signal CTRL to one-level switching tube (104) with control signal generator (103), the course of work is that first malleation and detection of negative pressure device (301) detect the output source of faint energy or the output voltage U of transducer (101) of access
i, as the output source of faint energy or the output voltage U of transducer (101)
iduring >0V, malleation and the detection of negative pressure device output signal U of comparator (V1)
pfor high level; As the output source of faint energy or the output voltage U of transducer (101)
iduring <0V, malleation and the detection of negative pressure device output signal U of comparator (V1)
pfor low level, malleation and detection of negative pressure device as inverter, make the output voltage U of malleation and detection of negative pressure device metal-oxide-semiconductor (Q0) with metal-oxide-semiconductor (Q0)
nwith malleation and the detection of negative pressure device output signal U with comparator (V1)
pkeep contrary level, when the detection of negative pressure device output signal U of comparator (V1)
pduring >0, passage bridge bridge the first metal-oxide-semiconductor (O1) and the 4th metal-oxide-semiconductor (O4) conducting of passage bridge bridge, output to the anti-phase input end signal I-=V of operational amplifier (V2) like this
oC/ 2, and the normal phase input end signal I+=U outputting to operational amplifier (V2)
1; As malleation and the detection of negative pressure device output voltage U of metal-oxide-semiconductor (Q0)
nduring >0, passage bridge bridge the second metal-oxide-semiconductor (O2) and the 3rd metal-oxide-semiconductor (O3) conducting of passage bridge bridge, output to the anti-phase input end signal I-=U of operational amplifier (V2) like this
1, and output to the normal phase input end signal I+=V of operational amplifier (V2)
oC/ 2, then hysteresis comparator (303) compares the normal phase input end signal I+ that outputs to operational amplifier (V2) and outputs to the voltage swing of anti-phase input end signal I-of operational amplifier (V2), according to the result compared then Check up polarity export the grid of corresponding control signal CTRL to one-level switching tube (104) with control signal generator (103).
8. the control method of ultralow pressure booster system according to claim 5, is characterized by the described judgment mode opened or turn off for controlling one-level switching tube (104) for working as | U
1| >| V
oCduring/2|, one-level switching tube (104) is open-minded, when | U
1| <| V
oCduring/2|, one-level switching tube 104 turns off.
9. the control method of ultralow pressure booster system according to claim 5, it is characterized by described hysteresis comparator (303) and adopt working-point maximal power tracing algorithm, namely, in the scope set near maximum power point, set two quiescent potentials and be respectively the first quiescent potential V
hwith the second quiescent potential V
l, in a switching process, working point is at the first quiescent potential V
hwith the second quiescent potential V
lbetween jump, in charging process, the output voltage U of the output source of faint energy or transducer (101)
irise gradually, working point is by the second quiescent potential V
lrise to the first quiescent potential V
h, when working point rises to the first quiescent potential V
hafter, by open-minded for one-level switching tube (104), the output voltage U of the output source of faint energy or transducer (101)
iwill decline, when working point drops to the second quiescent potential V
ltime, one-level switching tube (104) turns off, and can also complete the process that primary energy transmits thus.
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| CN111509966B (en) * | 2020-03-22 | 2023-04-25 | 天津理工大学 | Ultra-low voltage negative feedback modulation energy collection circuit |
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|---|---|---|---|---|
| CN201509152U (en) * | 2009-09-18 | 2010-06-16 | 重庆希诺达通信有限公司 | Boosted circuit for input ultra-low voltage |
| CN102097929A (en) * | 2011-03-18 | 2011-06-15 | 上海交通大学 | Single-level power factor corrector controlled by complete open loop |
| CN102497097A (en) * | 2011-12-08 | 2012-06-13 | 上海交通大学 | Ultra-low-voltage booster circuit for solar power generation |
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| JP2005294905A (en) * | 2004-03-31 | 2005-10-20 | Pioneer Electronic Corp | System and method of notifying location of remote controller |
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|---|---|---|---|---|
| CN201509152U (en) * | 2009-09-18 | 2010-06-16 | 重庆希诺达通信有限公司 | Boosted circuit for input ultra-low voltage |
| CN102097929A (en) * | 2011-03-18 | 2011-06-15 | 上海交通大学 | Single-level power factor corrector controlled by complete open loop |
| CN102497097A (en) * | 2011-12-08 | 2012-06-13 | 上海交通大学 | Ultra-low-voltage booster circuit for solar power generation |
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