CN204012952U - A kind of novel self-powered wireless temperature measurement transducer is got can circuit - Google Patents
A kind of novel self-powered wireless temperature measurement transducer is got can circuit Download PDFInfo
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- CN204012952U CN204012952U CN201420369820.3U CN201420369820U CN204012952U CN 204012952 U CN204012952 U CN 204012952U CN 201420369820 U CN201420369820 U CN 201420369820U CN 204012952 U CN204012952 U CN 204012952U
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Abstract
The utility model discloses a kind of novel self-powered wireless temperature measurement transducer and get energy circuit, comprise rectification circuit, electronic switch, electronic switch control circuit, voltage stabilizing and bleeder circuit, capacitance energy storage pond, LDO linear power supply, voltage stabilization feedback circuit, coil and annular core, wherein coil winding is on annular core, rectification circuit input end connecting coil, output connecting electronic switch, electronic switch connecting electronic ON-OFF control circuit and voltage stabilizing and bleeder circuit, capacitance energy storage pond connects voltage stabilizing and bleeder circuit, and connect LDO linear power supply, capacitance energy storage pond also connects an input of voltage stabilization feedback circuit, another input termination one setting voltage of voltage stabilization feedback circuit, output is connected to electronic switch control circuit, pass through the utility model, not only reduced the complexity of circuit, and can not produce coil problems of excessive heat, improve circuit efficiency, and reduced hardware cost and reduced by a procedure, increase work efficiency.
Description
Technical field
The utility model, about a kind of energy circuit of getting, particularly relates to a kind of novel self-powered wireless temperature measurement transducer and gets energy circuit.
Background technology
At present, traditional self-powered wireless temperature measurement transducer power pack treatment circuit is shown in Fig. 1.Its operation principle adopts following control mode, and annular core has two groups of coils, and wherein one group as actuating coil, and another group is short-circuited coil.Operation principle is as follows: after high pressure carrying object has electric current to pass through, produce alternating voltage UAC1, after rectification circuit, storage capacitor is charged.LDO (Low Drop-Out regulator, low pressure difference linear voltage regulator) powers for late-class circuit after storage capacitor voltage being carried out to linear transformation.When voltage surpasses set point (VDC voltage can not be too high, otherwise can damage electronic circuit), the work of voltage stabilization feedback circuit, controls electronic switch conducting, makes short-circuited coil pass through rectifier bridge short circuit.Because actuating coil and short-circuited coil coexist on an iron core, after short-circuited coil short circuit, the magnetic flux on iron core substantially all drops on short-circuited coil, so the voltage on actuating coil will reduce.When actuating coil lower voltage arrives set point, voltage stabilization feedback circuit is controlled electronic switch and is opened, and the voltage that actuating coil produces raises, to capacitor charging, for subsequent conditioning circuit work.
Yet adopting traditional self-powered wireless temperature measurement transducer of Fig. 1 to get can circuit, has following shortcoming: 1, need to be wound around two groups of coils on annular core, increase cost, and fecund given birth to a procedure, reduced production efficiency; 2, due to can not be too high in order to control operating voltage, therefore short-circuited coil is in the state of short circuit, open circuit alternation all the time, therefore, produced an interrupted short circuit current, this electric current continuous firing in coil, can cause coil heating, and along with the rising of short circuit current, heating situation is more and more serious.3, control efficiency is low.Owing to adopting short circuit mode of operation, at high pressure, at fluid electric current, increase, when magnetic field increases, the necessary one group of coil of liaison short circuit of this circuit, reduces the voltage that another organizes coil.This operating circuit is mainly that heat exhaustion is fallen by Conversion of Energy, so efficiency is lower.
Utility model content
The deficiency existing for overcoming above-mentioned prior art, one of the utility model object is to provide a kind of novel self-powered wireless temperature measurement transducer to get energy circuit, one group of toroidal iron core coil of its need, has reduced hardware cost and has reduced by a procedure, has improved operating efficiency.
Another object of the utility model is to provide a kind of novel self-powered wireless temperature measurement transducer to get energy circuit, and it adopts unicoil open circuit control model, has reduced the complexity of circuit, simple and reliable.
The another object of the utility model is to provide a kind of novel self-powered wireless temperature measurement transducer to get energy circuit, has solved coil heating problem.
An object again of the utility model is to provide a kind of novel self-powered wireless temperature measurement transducer to get energy circuit, it make subsequent conditioning circuit and main circuit disconnect controlling voltage by electronic switch, so efficiency improves greatly when voltage raises, can not produce coil problems of excessive heat, improve circuit efficiency.
For reaching above-mentioned and other object, the utility model proposes a kind of novel self-powered wireless temperature measurement transducer and get energy circuit, this is got and can comprise rectification circuit by circuit, electronic switch, electronic switch control circuit, voltage stabilizing and bleeder circuit, capacitance energy storage pond, LDO linear power supply, voltage stabilization feedback circuit, coil and annular core, wherein, described coil winding is on described annular core, described rectification circuit input end connects described coil, output connects described electronic switch, described electronic switch connects described electronic switch control circuit and described voltage stabilizing and bleeder circuit, described capacitance energy storage pond connects described voltage stabilizing and bleeder circuit, and connect described LDO linear power supply with stable output voltage, described capacitance energy storage pond also connects an input of described voltage stabilization feedback circuit, another input termination one setting voltage of described voltage stabilization feedback circuit, output is connected to described electronic switch control circuit.
Further, described electronic switch control circuit comprises a relay (U1), the existing leakage resistance (R1) of output and input current-limiting resistance (R2), described input current-limiting resistance (R2) connects the control end of described relay (U1) and the output of described voltage stabilization feedback circuit, described output current limiting resistance (R1) connects output and the described electronic switch of described relay (U1), the output of LDO linear power supply described in another control termination of described relay (U1), the controlled end of described relay (U1) connects the output of described rectification circuit.
Further, the MOSFET type relay that described relay (U1) is closed type.
Further, described electronic switch comprises the first triode (Q1) and the second triode (Q2) that Darlington connects, the collector electrode of described the first triode (Q1), described the second triode (Q2) connects the output of described rectification circuit, described the first triode (Q1) emitter connects described the second triode (Q2) base stage, described the second triode (Q2) emitter connects described voltage stabilizing and bleeder circuit, and described the first triode (Q1) base stage connects the output of described relay (U1) by described output current limiting resistance (R1).
Further, described voltage stabilizing and bleeder circuit comprise the first diode (D1) and the second diode (D2), the second diode (D2) negative electrode connects the output of described rectification circuit, described the first diode (D1) plus earth, the emitter of the second triode (Q2) and the anode in described capacitance energy storage pond of electronic switch described in described the first diode (D1) and the public termination of described the second diode (D2).
Further, described capacitance energy storage pond comprises a plurality of high power capacity electric capacity being connected in parallel, negativing ending grounding, and anode is connected to the input of described LDO linear power supply, and the anode in described capacitance energy storage pond is also connected to the sampling input of described voltage stabilization feedback circuit.
Further, described voltage stabilization feedback circuit comprises sample circuit, generating circuit from reference voltage and amplifier (U4), capacitance energy storage pond described in the sampling input termination of described sample circuit, output is connected to the inverting input of described amplifier (U4), described generating circuit from reference voltage is connected to the in-phase input end of described amplifier, and the output of described amplifier (U4) is connected to the control end of described electronic switch control circuit relay (U1) by described input current-limiting resistance.
Compared with prior art, a kind of novel self-powered wireless temperature measurement transducer of the utility model is got and can be adopted unicoil open-circuit working pattern by circuit, when high pressure carrying object electric current raises, operating voltage VDC is elevated to after setting range, voltage stabilization feedback loop is controlled electron tube open circuit, after open circuit, power supply is no longer to capacitor charging, and the release of capacitive energy is mainly leaned in the work of late-class circuit; When capacitive energy is discharged into a certain degree (reaction is capacitance voltage reduction), by voltage stabilization feedback loop, control electronic switch closes, input voltage charges to electric capacity, makes the lifting of LDO input voltage, thereby also input voltage is controlled in a rational scope, the utility model has not only reduced the complexity of circuit, simple and reliable, and can not produce coil problems of excessive heat, improved circuit efficiency, and reduced hardware cost and reduced by a procedure, improved operating efficiency.
Accompanying drawing explanation
Fig. 1 is the circuit block diagram that in prior art, a kind of self-powered wireless temperature measurement transducer is got energy circuit;
Fig. 2 is the circuit block diagram that a kind of novel self-powered wireless temperature measurement transducer of the utility model is got energy circuit.；
Fig. 3 is the circuit theory diagrams that a kind of novel self-powered wireless temperature measurement transducer of the utility model is got the preferred embodiment of energy circuit.
Embodiment
Below, by specific instantiation accompanying drawings execution mode of the present utility model, those skilled in the art can understand other advantage of the present utility model and effect easily by content disclosed in the present specification.The utility model also can be implemented or be applied by other different instantiation, and the every details in this specification also can be based on different viewpoints and application, carries out various modifications and change not deviating under spirit of the present utility model.
Fig. 2 is the circuit block diagram that a kind of novel self-powered wireless temperature measurement transducer of the utility model is got energy circuit.As shown in Figure 2, a kind of novel confession point wireless temperature-measuring sensor of the utility model is got energy circuit, comprise: rectification circuit 10, electronic switch 20, electronic switch control circuit 30, voltage stabilizing and bleeder circuit 40, capacitance energy storage pond 50, LDO linear power supply 60, voltage stabilization feedback circuit 70, AC coil 80 and annular core 90, AC coil 80 is wound on annular core 90, the two constitutes jointly to exchange gets energy circuit with interrogation energy when having high pressure carrying object by annular core 90 and with alternating voltage formal output, this output voltage is connected to rectification circuit 10 to be converted to direct voltage VDC, this direct voltage VDC is connected to electronic switch 20, electronic switch 20 is exported controlled potential pulse Vin to voltage stabilizing and bleeder circuit 40 under the control of electronic switch control circuit 30, this potential pulse Vin is connected to capacitance energy storage pond 50 energy is stored, capacitance energy storage pond 50 is connected to LDO linear power supply stable output voltage as 3.3V, voltage stabilizing and bleeder circuit 40 are also connected to voltage stabilization feedback circuit 70 when exporting controlled potential pulse Vin, so that potential pulse Vin and a setting voltage comparison are formed to negative feedback to output control signals to electronic switch control circuit 30, complete the control that the power conversion that AC coil 80 and annular core 90 are picked up is burning voltage output.
Specifically, the effect of rectification circuit 10 is that the ac voltage rectifier of the coil of annular core 90 80 outputs is become to direct voltage (VDC) output.Electronic switching circuit 20 is mainly the control of being responsible for carrying out VD size, and when direct voltage surpasses set point, electronic switch 20 is opened, and direct voltage stops storage capacitor pond to charge; When direct voltage is less than set point, electronic switch is connected, and direct voltage charges to storage capacitor pond.Electronic switch control circuit 30 is main to be responsible for the control of electronic switch and driving, and conducting is disconnected with pipe reliably under the control of voltage stabilization feedback circuit 70 to make it.Voltage stabilizing and bleeder circuit 40 mainly play two effects: first pair of direct voltage limits, and prevent that the too high circuit original paper that causes of direct voltage from damaging, and the second, circuit voltage is carried out to dividing potential drop, the input voltage (Vin) of LDO is provided.LDO linear power supply 60 Main Functions are that the Vin voltage of change is carried out to voltage stabilizing output, guarantee that follow-up 3.3V can stablize output.Voltage stabilization feedback circuit 70 is mainly that the input voltage vin of LDO linear power supply 60 and setting voltage are compared, and when Vin is during higher than set point, voltage stabilization feedback circuit 70 is controlled electronic switches 20 and opened; When Vin is during lower than set point, voltage stabilization feedback circuit 70 is controlled electronic switches 20 and is connected.
Fig. 3 is the circuit theory diagrams that a kind of novel self-powered wireless temperature measurement transducer of the utility model is got the preferred embodiment of energy circuit.Wherein, coil 80, annular core 90 and rectification circuit 10 are conventional products, capacitance energy storage pond 50 is a plurality of high power capacity electric capacity (C1 for example, C2, C5), LDO linear power supply 60 comprises linear voltage regulator LDO and filter capacitor C3, electronic switch control circuit 30 comprises a MOSFET type relay U1 and output current limiting resistance R 1 and input current-limiting resistance R2, input current-limiting resistance R2 connects the output of the control end of MOSFET type relay U1 and the amplifier U4 of voltage stabilization feedback circuit 70, output current limiting resistance R 1 connects the output of MOSFET type relay U1 and the triode Q1 base stage of electronic switch 20, another of MOSFET type relay U1 controlled the output of termination LDO linear power supply 60, the controlled end of MOSFET type relay U1 is input as rectification output dc voltage VDC, electronic switch 20 comprises that triode Q1 and Q2 that Darlington connects (can be referred to as the first triode Q1, the second triode Q2), Q1, Q2 collector electrode meets rectification output dc voltage VDC, Q1 emitter connects Q2 base stage, Q2 emitter connects the voltage-stabiliser tube D2 of voltage stabilizing and bleeder circuit 40 and the common port of D1, Q1 base stage is succeeded the output of electrical equipment U1 by current-limiting resistance R1, voltage stabilizing and bleeder circuit 40 comprise that Zener diode D1 and D2 (can be referred to as the first diode D1, the second diode D2), D2 negative electrode meets rectification output dc voltage VDC, D1 plus earth, the output of the public termination electronic switch 20 of D1 and D2 is the emitter of Q2 and the anode in capacitance energy storage pond 50, the negativing ending grounding in capacitance energy storage pond 50, the anode in capacitance energy storage pond 50 is connected to the input of LDO linear power supply 60, its output is connected to load as CPU etc., the anode in capacitance energy storage pond 50 is also connected to the sampling input of voltage stabilization feedback circuit 70, voltage stabilization feedback circuit 70 comprises sample circuit, generating circuit from reference voltage and amplifier U4, resistance R 4 and R6 form sample circuit, its sampling input termination capacitance energy storage pond 50, output is connected to the inverting input of amplifier U4, R3 and R5 form generating circuit from reference voltage, its output is connected to the in-phase input end of amplifier U4, the input that amplifier U4 output is connected to electronic switch control circuit 30 by input current-limiting resistance R2 is the control end of relay U1.
To coordinate Fig. 2, Fig. 3 to further illustrate principle of the present utility model below: annular core 90, under the magnetic fields of high pressure carrying object, forms alternating magnetic field.Magnetic field makes the AC coil 80 of annular core produce alternating voltage.Alternating voltage forms direct voltage VDC after rectification circuit 10 is processed.Voltage VDC, after electronic switch 20, then is connected on storage capacitor 50 through dividing potential drop, and as the input voltage of LDO linear power supply 60.For controlling LDO linear power supply 60 input voltages, be no more than the setting of chip, voltage stabilization feedback circuit 70 monitors it all the time, when voltage exceeds setting voltage, voltage stabilization feedback circuit 70 is controlled electronic switch 20 and is disconnected, and the power supply of at this moment load relies on the energy storage in electric capacity completely.Along with releasing of capacitance energy storage, voltage Vin reduces.After lower than set point, voltage stabilization feedback circuit 70 is opened electronic switch, and VDC charges to storage capacitor after dividing potential drop, after being charged to high pressure set point, closes.Because the voltage on electric capacity can not suddenly change, so the input voltage vin of LDO is charging, electric discharge within the specific limits.And the output stabilized voltage characteristic of LDO has determined the stable of follow-up 3.3V voltage.
In order to guarantee at subsequent conditioning circuit in powered on moment energy startup work, the MOSFET type relay that the U1 in electronic switch control circuit is closed type.In electric moment, electronic switch is opened, to capacitor charging.When capacitance voltage is elevated to after the voltage that LDO can start work, subsequent conditioning circuit is started working, and voltage is stablized to control.
Visible, a kind of novel self-powered wireless temperature measurement transducer of the utility model is got and can be adopted unicoil open-circuit working pattern by circuit, when high pressure carrying object electric current raises, operating voltage VDC is elevated to after setting range, voltage stabilization feedback loop is controlled electron tube open circuit, after open circuit, power supply is no longer to capacitor charging, and the release of capacitive energy is mainly leaned in the work of late-class circuit; When capacitive energy is discharged into a certain degree (reaction is capacitance voltage reduction), by voltage stabilization feedback loop, control electronic switch closes, input voltage charges to electric capacity, makes the lifting of LDO input voltage, thereby also input voltage is controlled in a rational scope.
Compared with prior art, the utlity model has following advantage:
(1) toroidal iron core coil only needs one group, has reduced hardware cost and has reduced by a procedure, has improved operating efficiency.
(2) adopt unicoil open circuit control model, reduced the complexity of circuit, simple and reliable.
(3) solved coil heating problem.Due to traditional control mode, circuit in stable operation process, the continuous short circuit coil of electronic switch, short circuit coil is in interrupted short-circuit mode, produced the short circuit current of a variation, this electric current persistent fever in coil, and then cause that coil temperature raises.And the present invention adopts open circuit control model, when voltage raises, electronic switch is to be under open-circuit condition, so the electric current of coil is very little.Therefore, can not produce the problem of coil heating.
(4) circuit efficiency improves greatly.Because traditional control mode is short circuit coil when voltage raises, energy is converted into heat completely, and the present invention is when voltage raises, the mode that subsequent conditioning circuit and main circuit are disconnected by electronic switch is controlled voltage, therefore efficiency improves greatly, can not produce coil problems of excessive heat, improve circuit efficiency.
Above-described embodiment is illustrative principle of the present utility model and effect thereof only, but not for limiting the utility model.Any those skilled in the art all can, under spirit of the present utility model and category, modify and change above-described embodiment.Therefore, rights protection scope of the present utility model, should be as listed in claims.
Claims (7)
1. a novel self-powered wireless temperature measurement transducer is got energy circuit, it is characterized in that: this is got and can comprise rectification circuit by circuit, electronic switch, electronic switch control circuit, voltage stabilizing and bleeder circuit, capacitance energy storage pond, LDO linear power supply, voltage stabilization feedback circuit, coil and annular core, wherein, described coil winding is on described annular core, described rectification circuit input end connects described coil, output connects described electronic switch, described electronic switch connects described electronic switch control circuit and described voltage stabilizing and bleeder circuit, described capacitance energy storage pond connects described voltage stabilizing and bleeder circuit, and connect described LDO linear power supply with stable output voltage, described capacitance energy storage pond also connects an input of described voltage stabilization feedback circuit, another input termination one setting voltage of described voltage stabilization feedback circuit, output is connected to described electronic switch control circuit.
2. a kind of novel self-powered wireless temperature measurement transducer as claimed in claim 1 is got energy circuit, it is characterized in that: described electronic switch control circuit comprises a relay (U1), output current limiting resistance (R1) and input current-limiting resistance (R2), described input current-limiting resistance (R2) connects the control end of described relay (U1) and the output of described voltage stabilization feedback circuit, described output current limiting resistance (R1) connects output and the described electronic switch of described relay (U1), the output of LDO linear power supply described in another control termination of described relay (U1), the controlled end of described relay (U1) connects the output of described rectification circuit.
3. a kind of novel self-powered wireless temperature measurement transducer as claimed in claim 2 is got energy circuit, it is characterized in that: described relay (U1) is the MOSFET type relay of closed type.
4. a kind of novel self-powered wireless temperature measurement transducer as claimed in claim 3 is got energy circuit, it is characterized in that: described electronic switch comprises the first triode (Q1) and the second triode (Q2) that Darlington connects, described the first triode (Q1), the collector electrode of described the second triode (Q2) connects the output of described rectification circuit, described the first triode (Q1) emitter connects described the second triode (Q2) base stage, described the second triode (Q2) emitter connects described voltage stabilizing and bleeder circuit, described the first triode (Q1) base stage connects the output of described relay (U1) by described output current limiting resistance (R1).
5. a kind of novel self-powered wireless temperature measurement transducer as claimed in claim 4 is got energy circuit, it is characterized in that: described voltage stabilizing and bleeder circuit comprise the first diode (D1) and the second diode (D2), the second diode (D2) negative electrode connects the output of described rectification circuit, described the first diode (D1) plus earth, the emitter of the second triode (Q2) and the anode in described capacitance energy storage pond of electronic switch described in described the first diode (D1) and the public termination of described the second diode (D2).
6. a kind of novel self-powered wireless temperature measurement transducer as claimed in claim 5 is got energy circuit, it is characterized in that: described capacitance energy storage pond comprises a plurality of high power capacity electric capacity being connected in parallel, negativing ending grounding, anode is connected to the input of described LDO linear power supply, and the anode in described capacitance energy storage pond is also connected to the sampling input of described voltage stabilization feedback circuit.
7. a kind of novel self-powered wireless temperature measurement transducer as claimed in claim 6 is got energy circuit, it is characterized in that: described voltage stabilization feedback circuit comprises sample circuit, generating circuit from reference voltage and amplifier (U4), capacitance energy storage pond described in the sampling input termination of described sample circuit, output is connected to the inverting input of described amplifier (U4), described generating circuit from reference voltage is connected to the in-phase input end of described amplifier, and the output of described amplifier (U4) is connected to the control end of described electronic switch control circuit relay (U1) by described input current-limiting resistance.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420369820.3U CN204012952U (en) | 2014-07-04 | 2014-07-04 | A kind of novel self-powered wireless temperature measurement transducer is got can circuit |
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| CN201420369820.3U CN204012952U (en) | 2014-07-04 | 2014-07-04 | A kind of novel self-powered wireless temperature measurement transducer is got can circuit |
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| CN204012952U true CN204012952U (en) | 2014-12-10 |
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| CN201420369820.3U Expired - Fee Related CN204012952U (en) | 2014-07-04 | 2014-07-04 | A kind of novel self-powered wireless temperature measurement transducer is got can circuit |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107806942A (en) * | 2017-11-25 | 2018-03-16 | 吉林大学 | A kind of piezoelectric capacitance combined type self-powered temperature field detection device |
| CN109787337A (en) * | 2019-01-28 | 2019-05-21 | 江苏森源电气股份有限公司 | Composite power supply formula wireless temperature-measuring sensor and its control method |
| CN110208597A (en) * | 2019-05-23 | 2019-09-06 | 宁波大学 | A kind of self-power wireless current monitoring system based on simplex winding current transformer |
| CN112213542A (en) * | 2020-10-09 | 2021-01-12 | 和远智能科技股份有限公司 | Single-coil current sensor for electricity taking and measurement |
| CN112533279A (en) * | 2020-11-13 | 2021-03-19 | 珠海格力电器股份有限公司 | Wireless data conversion module and energy Internet system |
| CN114123441A (en) * | 2018-11-06 | 2022-03-01 | 武汉领普科技有限公司 | Self-powered method and device based on polarity detection |
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2014
- 2014-07-04 CN CN201420369820.3U patent/CN204012952U/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107806942A (en) * | 2017-11-25 | 2018-03-16 | 吉林大学 | A kind of piezoelectric capacitance combined type self-powered temperature field detection device |
| CN107806942B (en) * | 2017-11-25 | 2023-07-28 | 吉林大学 | Piezoelectric capacitance combined type self-powered temperature field detection device |
| CN114123441A (en) * | 2018-11-06 | 2022-03-01 | 武汉领普科技有限公司 | Self-powered method and device based on polarity detection |
| CN114123441B (en) * | 2018-11-06 | 2024-03-15 | 武汉领普科技有限公司 | Polarity detection-based self-powered method and device |
| CN109787337A (en) * | 2019-01-28 | 2019-05-21 | 江苏森源电气股份有限公司 | Composite power supply formula wireless temperature-measuring sensor and its control method |
| CN109787337B (en) * | 2019-01-28 | 2022-04-29 | 江苏森源电气股份有限公司 | Composite power supply type wireless temperature measuring sensor and control method thereof |
| CN110208597A (en) * | 2019-05-23 | 2019-09-06 | 宁波大学 | A kind of self-power wireless current monitoring system based on simplex winding current transformer |
| CN110208597B (en) * | 2019-05-23 | 2021-04-23 | 宁波大学 | Self-powered wireless current monitoring system based on single-winding current transformer |
| CN112213542A (en) * | 2020-10-09 | 2021-01-12 | 和远智能科技股份有限公司 | Single-coil current sensor for electricity taking and measurement |
| CN112533279A (en) * | 2020-11-13 | 2021-03-19 | 珠海格力电器股份有限公司 | Wireless data conversion module and energy Internet system |
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