CN101783599A - Voltage doubling rectifying circuit - Google Patents
Voltage doubling rectifying circuit Download PDFInfo
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- CN101783599A CN101783599A CN200910076788A CN200910076788A CN101783599A CN 101783599 A CN101783599 A CN 101783599A CN 200910076788 A CN200910076788 A CN 200910076788A CN 200910076788 A CN200910076788 A CN 200910076788A CN 101783599 A CN101783599 A CN 101783599A
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Abstract
The invention relates to a voltage doubling rectifying circuit. The circuit comprises an AC-DC stage unit, a pulse voltage circuit and a DC-DC stage unit, wherein the AC-DC stage unit comprises a plurality of cascaded first charging units used for converting AC voltage to DC voltage; the pulse voltage circuit is used to generate impulse voltage Ph1 and impulse voltage Ph2 which have the same frequency and are not overlapped; the DC-DC stage unit comprises a plurality of cascaded second charging units and is used to amplify the DC voltage outputted by the AC-DC stage unit in a cascade way under the control of the impulse voltage Ph1 and the impulse voltage Ph2 and output the amplified DC voltage. The voltage doubling rectifying circuit can output intermittent heavy-current through energy accumulation under the condition of low input, can be used in some electronic devices used for intermittent measurement or operation and can also be used to provide power for the monitoring module in the non-battery automobile tire pressure monitoring system.
Description
Technical field
The present invention relates to circuit field, be specifically related to a kind of voltage doubling rectifing circuit, be suitable for being applied in the electronic equipment of no battery car system for monitoring pressure in tyre and needs amplification rectification thereof.
Background technology
Automobile tire pressure monitoring system (TPMS) is used for tire pressure being monitored automatically when running car in good time, and low tire pressure that causes having a flat tire and the high tire pressure of high temperature carry out early warning, guarantee traffic safety.The technical difficult points of TPMS concentrates on the interior monitoring modular of tire.At present charged pool TPMS module has had the technology of comparative maturity, but battery brings several serious problems: battery life is limited, volume and weight is excessive, environmental pollution etc., therefore presses for the key technology of the no battery TPMS of research.
A kind of feasible program that realizes no battery system for monitoring pressure in tyre is to adopt the inductance coupling high mode, realize coupling by the spatial high-frequency alternating magnetic field, according to the law of electromagnetic induction, induce voltage and current in the coil by alternating magnetic field monitoring modular in tire, for monitoring modular in the tire provides energy.Generally speaking, this mode can provide little electric current output continuously, therefore is applicable in system's (as radio RF recognition technology) of low-power consumption, can't guarantee big electric current output.Yet in no battery TPMS application scenario, DATA REASONING and sending module consumed current be big (about 10mA), requires to have the interval power supply device that big electric current can be provided.Existing intermittence device to change the AC signal of collecting into direct current signal by rectification by the inductance coupling high mode be the electric capacity charging, be about to energy storages on electric capacity, after energy acquires a certain degree, wake transducer in the TPMS system, MCU, rf data radiating circuit etc. up by enable signal and finish a data acquisition and process of transmitting, consume energy stored.Subsequently, circuit enters the process of energy storage again.This process circulates repeatedly, thereby reaches the purpose of intermittently exporting big electric current.
But in actual applications, the antenna apart from each other (as more than 70 centimetres) of TPMS system monitoring module in outer energy emitter of tire and the tire, therefore the AC energy that can receive is comparatively faint, presses for the rectification circuit with high-amplification-factor.In the present disclosed technology, be the existing report of power electronic equipment with AC signal through over commutation, but its output current of is less.Simultaneously, the technology of exporting big electric current after the store energy is also had report, but it requires input signal bigger, has limited the distance between energy transmitting antenna and the reception antenna.
Remove the problem that in automobile tire pressure monitoring system TPMS, has above-mentioned rectification circuit, in other the application system that can't obtain big input exchange signal and the bigger output direct current signal of needs, also have the problems referred to above.
Summary of the invention
The purpose of this invention is to provide a kind of voltage doubling rectifing circuit, this voltage doubling rectifing circuit is further carried out voltage again and is amplified step by step under the situation of low input after rectification, by energy accumulation, and the intermittent big electric current of output.
For achieving the above object, the present invention adopts following technical scheme:
A kind of voltage doubling rectifing circuit, this voltage doubling rectifing circuit comprises:
AC-DC level unit comprises first charhing unit that alternating voltage is converted to direct voltage of several cascades;
Pulse voltage circuit is used to produce pulse voltage Ph1 and the pulse voltage Ph2 that does not overlap with two-phase frequently;
DC-DC level unit comprises the plurality of cascaded second charging unit, is used under the control of pulse voltage Ph1 and pulse voltage Ph2, and the direct voltage that AC-DC level unit is exported amplifies step by step, the direct voltage after output is amplified.
Preferably, this voltage doubling rectifing circuit also comprises the pressure limiting circuit that is connected AC-DC level unit output, is used for the voltage of AC-DC level unit output is limited to below the magnitude of voltage of voltage doubling rectifing circuit manufacturing process.
Preferably, described pressure limiting circuit is several diode in series.
Preferably, every grade first charhing unit comprises capacitor C
2k, capacitor C
2k+1, diode D
2k, diode D
2k+1, wherein:
Capacitor C
2kAn end input ac voltage;
Diode D
2kPositive pole be connected with the output of upper level first charhing unit;
Capacitor C
2kThe other end and diode D
2kPositive pole together insert diode D after connecting
2k+1Positive pole;
Diode D
2k+1Negative pole and capacitor C
2k+1An end connect capacitor C
2k+1Other end ground connection; Described diode D
2k+1Negative pole end be the output of this grade first charhing unit;
The diode D of the first order first charhing unit
2kPlus earth.
Preferably, this voltage doubling rectifing circuit comprises first charhing unit of level Four phase cascade.
Preferably, each the level second charhing unit comprise capacitor C '
2k, capacitor C '
2k+1, diode D '
2k, diode D '
2k+1, wherein:
Diode D '
2kPositive pole be connected with the output of upper level second charhing unit;
Capacitor C '
2kOne termination is gone into pulse voltage signal Ph1;
Capacitor C '
2k+1A termination go into pulse voltage signal Ph2;
Diode D '
2kNegative pole and capacitor C '
2kThe other end together insert diode D ' after connecting
2k+1Positive pole;
Diode D '
2k+1Negative pole and capacitor C '
2k+1The other end connect described diode D '
2k+1Negative pole end be the output of this grade second charhing unit;
The diode D ' of the first order second charhing unit
2kPositive pole be connected with the output of AC-DC level unit.
Preferably, this voltage doubling rectifing circuit comprises Pyatyi phase cascaded second charging unit.
Preferably, described pulse voltage circuit comprises frequency divider and time-delay arithmetic unit, wherein:
The described alternating voltage of one termination of frequency divider carries out four frequency divisions to the alternating voltage of importing;
The alternating voltage of delayer arithmetic unit after with four frequency divisions carries out the computing time-delay and produces pulse voltage Ph1 and the pulse voltage Ph2 that does not overlap with two-phase frequently.
Preferably, this voltage doubling rectifing circuit is applied to no battery car system for monitoring pressure in tyre, charges for the energy-storage travelling wave tube in the no battery car system for monitoring pressure in tyre behind the AC signal rectification and voltage multiplier that will receive by antenna.
Utilize voltage doubling rectifing circuit provided by the invention, have following beneficial effect:
First order AC-DC level unit will exchange input and change direct current signal into, DC-DC level unit, the second level carries out further voltage and promotes, make output voltage satisfy requirement for the energy-storage travelling wave tube charging, under the situation of low input, pass through energy accumulation, the intermittent big electric current of output can satisfy in the electronic equipment of some intermittent measurement or discontinuity work.
Description of drawings
Fig. 1 is the structured flowchart of voltage doubling rectifing circuit of the present invention;
Fig. 2 is the first charhing unit circuit diagram of AC-DC level unit in the voltage doubling rectifing circuit in the embodiment of the invention;
Fig. 3 is the structure chart of AC-DC level unit in the voltage doubling rectifing circuit of the present invention;
Fig. 4 is the second charhing unit circuit diagram of DC-DC level unit in the voltage doubling rectifing circuit in the embodiment of the invention;
Fig. 5 is the structure chart of DC-DC level unit in the voltage doubling rectifing circuit of the present invention;
Fig. 6 is the structure chart of the pulse voltage circuit in the embodiment of the invention.
Embodiment
The voltage doubling rectifing circuit that the present invention proposes is described as follows in conjunction with the accompanying drawings and embodiments.
The voltage doubling rectifing circuit that the present invention proposes is to realize the low input that exchanges, the voltage doubling rectifing circuit of high direct current output.The present invention is that the mode with integrated circuit realizes, after if input increases, voltage surpasses the voltage range that integrated circuit fabrication process limited after the multiplication of voltage, chip will be burnt, so under the situation that the invention circuit mainly is conceived to import less (with respect to the subsequent conditioning circuit demand), multiplication of voltage output can be follow-up accumulator charging.
Embodiment
As shown in Figure 1, a kind of voltage doubling rectifing circuit, this voltage doubling rectifing circuit comprises:
AC-DC level unit comprises first charhing unit of several cascades, and first charhing unit is used to receive ac input signal, and changes it into direct current signal, and cascade can realize exporting the amplification of rectified signal step by step; Pulse voltage circuit is used to produce pulse voltage Ph1 and the pulse voltage Ph2 that does not overlap with two-phase frequently; DC-DC level unit comprises the plurality of cascaded second charging unit, is used for the direct voltage of AC-DC level unit output being amplified step by step the direct voltage after output is amplified.In the circuit of AC-DC level unit, the instantaneous amplitude of the AC signal AC that is imported changes, therefore can utilize at circuit a plurality of diodes are set, when utilizing each diode and conducting, the time and turn-off, different combinations just makes each charhing unit be in the cyclic process that charging-electric charge is shifted; And DC-DC level unit is just different, and its input signal is stable relatively, therefore needs pulse voltage to control the different conductings of diode constantly and the combination of shutoff.The meaning of the pulse voltage signal here should be a control signal in fact, for no other reason than that it has periodically, the generation circuit has been quoted the clock circuit in other circuit design, so present embodiment also is called " clock generation circuit ".
Preferably, this voltage doubling rectifing circuit also comprises the pressure limiting circuit that is connected AC-DC level unit output, be used for the voltage of AC-DC level unit output is limited to below the magnitude of voltage of voltage doubling rectifing circuit manufacturing process, prevent that the voltage of some node in the multiplication of voltage process from surpassing the restriction of integrated circuit fabrication process and causing burning of pipe.
The present invention compared with prior art, improvement mainly is the cascade of two-stage because adopt AC-DC level unit be difficult to voltage doubly very high.The circuit structure and the function of present embodiment each several part are described in detail in detail below.
(1) AC-DC level unit
Basic principle in the AC-DC level unit is to utilize semiconductor diode and energy storage component to discharge and recharge, thereby increases amplitude step by step.Be illustrated in figure 2 as the first charhing unit circuit diagram of AC-DC level unit in the voltage doubling rectifing circuit of the present invention, this first charhing unit comprises: comprise capacitor C
2k, capacitor C
2k+1, diode D
2k, diode D
2k+1, wherein: capacitor C
2kAn end input ac voltage; Diode D
2kPositive pole be connected with the output of upper level first charhing unit; Capacitor C
2kThe other end and diode D
2kPositive pole together insert diode D after connecting
2k+1Positive pole; Diode D
2k+1Negative pole and capacitor C
2k+1An end connect capacitor C
2k+1Other end ground connection; Described diode D
2k+1Negative pole end be the output of this grade first charhing unit; The diode D of the first order first charhing unit
2kPlus earth.Wherein k represents the sequence number of first charhing unit, and is desirable 0,1,2....The structure chart of AC-DC level unit in the voltage doubling rectifing circuit of the present invention as shown in Figure 3, the first different charhing units mark with different wire frames, AC-DC level unit adopts first charhing unit of level Four cascade in the present embodiment, the progression of cascade was not limited to level Four when the present invention specifically implemented, and can take the circumstances into consideration plus-minus according to actual conditions.
In this first charhing unit,, promptly get k=0, V for the 1st grade
0Promptly be the negative pole of input signal, ground connection.Usually, for any k, V
2k, V
2k+2Have with the alternating voltage of importing and have opposite phases.Therefore, work as V
2kAmplitude and V
2k+1The difference of amplitude surpass diode D
2kConducting voltage the time, diode D
2kDuring conducting, diode D
2k+1End V
2kBy diode D
2kGive capacitor C
2kCharging is up to V
2kAmplitude and V
2k+1The difference of amplitude less than diode D
2kDuring threshold value, D
2kTurn-off, and D
2k+1Conducting; This moment, the input ac voltage Vinp of institute passed through capacitor C
2k, diode D
2k+1To capacitor C
2k+1Charging makes V
2k+2Voltage rise.Fig. 3 after indicating can see that each inter-stage connects in turn, and in the one-period of input exchange signal Vinp, each grade first charhing unit all experiences the process of a charge transfer, with V in other words
2kElectric charge be sent to V
2k+2,, finally obtain big voltage direct current output with this form iteration progressively.
The pressure limiting circuit of AC-DC level unit is that the rightest shown in Figure 3 row are not by four diode in series of frame in this enforcement.
(2) DC-DC level unit
In order to make the direct current input of small-signal that bigger rectifier output voltage can be arranged, and keep certain conversion efficiency, the form of DC-DC DC-DC is adopted in second level conversion.
The second charhing unit circuit diagram of DC-DC level unit in the voltage doubling rectifing circuit of the present invention as shown in Figure 4, each the level second charhing unit comprise capacitor C '
2k, capacitor C '
2k+1, diode D '
2k, diode D '
2k+1, diode D '
2kPositive pole be connected with the output of upper level second charhing unit; Capacitor C '
2kOne termination is gone into pulse voltage signal Ph1; Capacitor C '
2k+1A termination go into pulse voltage signal Ph2; Diode D '
2kNegative pole and capacitor C '
2kThe other end together insert diode D ' after connecting
2k+1Positive pole; Diode D '
2k+1Negative pole and capacitor C '
2k+1The other end connect described diode D '
2k+1Negative pole end be the output of this grade second charhing unit; The diode D ' of the first order second charhing unit
2kPositive pole be connected with the output of AC-DC level unit.
Wherein, Ph1 and Ph2 signal are the pulse voltage signals that the two-phase of same frequency does not overlap.Be under the initial condition, DC-DC level unit circuit export to C '
0Charging makes C '
0On the accumulation of certain electric charge is arranged.Suppose capacitor C '
2kCarried charge Q2k, capacitor C '
2k+1Carried charge Q2k+1, when Ph1 for just and
V
Ph1+V′
2k+1＞V
thD2k+1+V′
2k+2
V in the formula
ThD2k+1Expression diode D '
2k+1Threshold value, that is to say have only voltage difference to surpass this value diode could forward conduction, the electric charge transfer of Q2k to Q2k+1 will take place, thereby makes V '
2k+2Raise.Shown in Figure 5, the second different charhing units mark with wire frame, and DC-DC level unit adopts first charhing unit of Pyatyi cascade in the present embodiment, and the progression of cascade was not limited to Pyatyi when the present invention specifically implemented, and can take the circumstances into consideration plus-minus according to actual conditions.
(3) pulse voltage circuit
Pulse voltage circuit comprises frequency divider and time-delay arithmetic unit in the present embodiment, and a termination alternating voltage of frequency divider carries out four frequency divisions to the alternating voltage of importing; Delayer arithmetic unit, the alternating voltage behind part four frequency divisions carry out the computing time-delay and produce pulse voltage Ph1 and the pulse voltage signal Ph2 that does not overlap with two-phase frequently.
As shown in Figure 6, the concrete d type flip flop that is connected into feedback form that adopts earlier carries out the processing of four frequency divisions to ac voltage signal, and the time-delay arithmetic unit that utilizes NAND gate and inverter to form then carries out the computing time-delay and produces the pulse voltage signal that two-phase does not overlap.This process is a prior art, no longer describes in detail here.
Voltage doubling rectifing circuit provided by the present invention is applied to no battery car system for monitoring pressure in tyre, powers for the monitoring modular in the no battery car system for monitoring pressure in tyre behind the AC signal rectification and voltage multiplier that will receive by antenna.The about 1.2V of input amplitude, frequency are the 13.56MHz AC signal, and this voltage doubling rectifing circuit can be exported high direct current output (more than the 8V).Certainly, also can be applied in the electronic equipment of some intermittent measurement or discontinuity work.
Above execution mode only is used to illustrate the present invention; and be not limitation of the present invention; the those of ordinary skill in relevant technologies field; under the situation that does not break away from the spirit and scope of the present invention; can also make various variations and modification; therefore all technical schemes that are equal to also belong to category of the present invention, and scope of patent protection of the present invention should be defined by the claims.
Claims (9)
1. a voltage doubling rectifing circuit is characterized in that, this voltage doubling rectifing circuit comprises:
AC-DC level unit comprises first charhing unit that alternating voltage is converted to direct voltage of several cascades;
Pulse voltage circuit is used to produce pulse voltage Ph1 and the pulse voltage Ph2 that does not overlap with two-phase frequently;
DC-DC level unit comprises the plurality of cascaded second charging unit, is used under the control of pulse voltage Ph1 and pulse voltage Ph2, and the direct voltage that AC-DC level unit is exported amplifies step by step, the direct voltage after output is amplified.
2. voltage doubling rectifing circuit according to claim 1, it is characterized in that, this voltage doubling rectifing circuit also comprises the pressure limiting circuit that is connected AC-DC level unit output, is used for below the magnitude of voltage of manufacturing process that voltage with AC-DC level unit output is limited to voltage doubling rectifing circuit.
3. voltage doubling rectifing circuit according to claim 2 is characterized in that, described pressure limiting circuit is several diode in series.
4. voltage doubling rectifing circuit according to claim 1 is characterized in that, every grade first charhing unit comprises capacitor C
2k, capacitor C
2k+1, diode D
2k, diode D
2k+1, wherein:
Capacitor C
2kAn end input ac voltage;
Diode D
2kPositive pole be connected with the output of upper level first charhing unit;
Capacitor C
2kThe other end and diode D
2kPositive pole together insert diode D after connecting
2k+1Positive pole;
Diode D
2k+1Negative pole and capacitor C
2k+1An end connect capacitor C
2k+1Other end ground connection; Described diode D
2k+1Negative pole end be the output of this grade first charhing unit;
The diode D of the first order first charhing unit
2kPlus earth.
5. voltage doubling rectifing circuit according to claim 4 is characterized in that, this voltage doubling rectifing circuit comprises first charhing unit of level Four phase cascade.
6. voltage doubling rectifing circuit according to claim 1 is characterized in that, each the level second charhing unit comprise capacitor C '
2k, capacitor C '
2k+1, diode D '
2k, diode D '
2k+1, wherein:
Diode D '
2kPositive pole be connected with the output of upper level second charhing unit;
Capacitor C '
2kOne termination is gone into pulse voltage signal Ph1;
Capacitor C '
2k+1A termination go into pulse voltage signal Ph2;
Diode D '
2kNegative pole and capacitor C '
2kThe other end together insert diode D ' after connecting
2k+1Positive pole;
Diode D '
2k+1Negative pole and capacitor C '
2k+1The other end connect described diode D '
2k+1Negative pole end be the output of this grade second charhing unit;
The diode D ' of the first order second charhing unit
2kPositive pole be connected with the output of AC-DC level unit.
7. voltage doubling rectifing circuit according to claim 6 is characterized in that, this voltage doubling rectifing circuit comprises Pyatyi phase cascaded second charging unit.
8. voltage doubling rectifing circuit according to claim 6 is characterized in that, described pulse voltage circuit comprises frequency divider and time-delay arithmetic unit, wherein:
The described alternating voltage of one termination of frequency divider carries out four frequency divisions to the alternating voltage of importing;
The alternating voltage of delayer arithmetic unit after with four frequency divisions carries out the computing time-delay and produces pulse voltage Ph1 and the pulse voltage Ph2 that does not overlap with two-phase frequently.
9. voltage doubling rectifing circuit according to claim 1, it is characterized in that, this voltage doubling rectifing circuit is applied to no battery car system for monitoring pressure in tyre, charges for the energy-storage travelling wave tube in the no battery car system for monitoring pressure in tyre behind the AC signal rectification and voltage multiplier that will receive by antenna.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910076788A CN101783599A (en) | 2009-01-21 | 2009-01-21 | Voltage doubling rectifying circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910076788A CN101783599A (en) | 2009-01-21 | 2009-01-21 | Voltage doubling rectifying circuit |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102570865A (en) * | 2011-12-26 | 2012-07-11 | 上海交通大学 | Low-voltage AC-DC (Alternating Current to Direct Current) converter |
| CN103475201A (en) * | 2013-09-11 | 2013-12-25 | 昆山新金福精密电子有限公司 | Rectifying circuit |
| CN103516376A (en) * | 2012-06-20 | 2014-01-15 | 李骏恒 | Wireless information display apparatus |
| CN103595272A (en) * | 2013-10-18 | 2014-02-19 | 上海交通大学 | Thyristor phase-controlled direct-current circuit |
| CN106961166A (en) * | 2017-03-28 | 2017-07-18 | 江苏科技大学 | A kind of parallel RF energy collector of multiple antennas |
| CN110829551A (en) * | 2018-08-29 | 2020-02-21 | 华为技术有限公司 | Wireless battery charging with improved efficiency |
-
2009
- 2009-01-21 CN CN200910076788A patent/CN101783599A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102570865A (en) * | 2011-12-26 | 2012-07-11 | 上海交通大学 | Low-voltage AC-DC (Alternating Current to Direct Current) converter |
| CN103516376A (en) * | 2012-06-20 | 2014-01-15 | 李骏恒 | Wireless information display apparatus |
| CN103475201A (en) * | 2013-09-11 | 2013-12-25 | 昆山新金福精密电子有限公司 | Rectifying circuit |
| CN103475201B (en) * | 2013-09-11 | 2016-02-10 | 昆山新金福精密电子有限公司 | A kind of rectification circuit |
| CN103595272A (en) * | 2013-10-18 | 2014-02-19 | 上海交通大学 | Thyristor phase-controlled direct-current circuit |
| CN103595272B (en) * | 2013-10-18 | 2016-04-13 | 上海交通大学 | Thyristor Controlled DC circuit |
| CN106961166A (en) * | 2017-03-28 | 2017-07-18 | 江苏科技大学 | A kind of parallel RF energy collector of multiple antennas |
| CN110829551A (en) * | 2018-08-29 | 2020-02-21 | 华为技术有限公司 | Wireless battery charging with improved efficiency |
| US11289936B2 (en) | 2018-08-29 | 2022-03-29 | Huawei Technologies Co., Ltd. | Wireless battery charging with improved efficiency |
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Application publication date: 20100721 |