CN105334395A - Simple super-capacitor capacity measurement circuit - Google Patents
Simple super-capacitor capacity measurement circuit Download PDFInfo
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- CN105334395A CN105334395A CN201510502440.1A CN201510502440A CN105334395A CN 105334395 A CN105334395 A CN 105334395A CN 201510502440 A CN201510502440 A CN 201510502440A CN 105334395 A CN105334395 A CN 105334395A
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- bus transceiver
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Abstract
The invention relates to a simple super-capacitor capacity measurement circuit, and the technical characteristics of the circuit are that the circuit comprises a single-chip microcomputer, two isolation RS232 bus transceivers, two non-isolation RS232 bus transceivers, a programmable DC power supply, and a programmable electronic load; the single-chip microcomputer is sequentially connected with the first isolation RS232 bus transceiver, the first non-isolation RS232 bus transceiver and the programmable DC power supply; the single-chip microcomputer is sequentially connected with the second isolation RS232 bus transceiver, the second non-isolation RS232 bus transceiver and the programmable electronic load; and the programmable DC power supply and the programmable electronic load are connected with a measured super-capacitor. Two serial ports of the single-chip microcomputer are respectively used for controlling the programmable DC power supply and the programmable electronic load to carry out the charging and discharging of the super-capacitor. The single-chip microcomputer records the data in the charging and discharging process, and calculates the capacity of the super-capacitor according to the data. The circuit is simple in structure, is high in reliability, is low in manufacture cost, and is easy to popularize.
Description
Technical field
The invention belongs to measuring capacitance capacity technical field, especially a kind of simple and easy super capacitor cubic content measurement circuit.
Background technology
Super capacitor is a kind of novel energy-storage travelling wave tube, is commonly employed in the field such as back-up source, electric automobile.The measuring technique of super capacitor capacity promotes the use of a kind of important technology of super capacitor.Current measuring technique mainly adopts special capacity measurement instrument, there is the shortcoming that cost is higher, not easily promote.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art, a kind of simple and easy super capacitor cubic content measurement circuit is provided, solve the shortcoming that existing super capacitor cubic content measurement circuit cost is high, not easily promote.
The present invention solves its technical matters and takes following technical scheme to realize:
A kind of simple and easy super capacitor cubic content measurement circuit, comprises single-chip microcomputer, the first isolation RS232 bus transceiver, the first non-isolated RS232 bus transceiver, programmable DC power supply, the second isolation RS232 bus transceiver, the second non-isolated RS232 bus transceiver and programmable electronic load; RS232 bus transceiver isolated by single-chip microcomputer and first, the first non-isolated RS232 bus transceiver, programmable DC power supply are connected successively, and the output terminal of programmable DC power supply is connected with measured super capacitor; RS232 bus transceiver isolated by single-chip microcomputer and second, the second non-isolated RS232 bus transceiver is connected successively with programmable electronic load, and the output terminal of programmable electronic load is connected with measured super capacitor.
And, described single-chip microcomputer, first isolation RS232 bus transceiver, first non-isolated RS232 bus transceiver, programmable DC power supply, second isolation RS232 bus transceiver, concrete annexation between second non-isolated RS232 bus transceiver and programmable electronic load is: the data transmit-receive port that first serial line interface and first of single-chip microcomputer isolates RS232 bus transceiver is connected, another data transmit-receive port of first isolation RS232 bus transceiver is connected with the data transmit-receive port of the first non-isolated RS232 bus transceiver, another data transmit-receive port of first non-isolated RS232 bus transceiver is connected with the serial line interface of programming direct supply, the data transmit-receive port that second serial line interface and second of single-chip microcomputer isolates RS232 bus transceiver is connected, another data transmit-receive port of second isolation RS232 bus transceiver is connected with the data transmit-receive port of the second non-isolated RS232 bus transceiver, and another data transmit-receive port of the second non-isolated RS232 bus transceiver is connected with the serial line interface of programmable electronic load.
And, described single-chip microcomputer adopts PIC18F46K80 chip, described first isolation RS232 bus transceiver, the second isolation RS232 bus transceiver all adopt ADM3251 chip, and described first non-isolated RS232 bus transceiver, the second non-isolated RS232 bus transceiver all adopt MAX3232 chip; What described programmable DC power supply U4 adopted is M8874 chip, the M9713 chip that described programmable electronic load U7 adopts.
Advantage of the present invention and good effect are:
The present invention controls a programmable DC power supply respectively by the dual serial interface of a single-chip microcomputer and a programmable electronic load carries out charge and discharge to super capacitor, single-chip microcomputer records the charge and discharge time in charge and discharge process, charge and discharge size of current, and super-capacitor voltage in charge and discharge process, and calculate the capacity of super capacitor according to above-mentioned data, have that circuit structure is simple, reliability is high, cheap, be easy to the features such as popularization.
Accompanying drawing explanation
Fig. 1 is circuit theory diagrams of the present invention;
In figure, single-chip microcomputer U1: single-chip microcomputer, first isolation RS232 bus transceiver U2: isolation RS232 bus transceiver, first non-isolated RS232 bus transceiver U3: non-isolated RS232 bus transceiver, programmable DC power supply U4: programmable DC power supply, second isolation RS232 bus transceiver U5: isolation RS232 bus transceiver, second non-isolated RS232 bus transceiver U6: non-isolated RS232 bus transceiver, programmable electronic load U7: programmable electronic load, C1: electric capacity, C2: electric capacity, C3: electric capacity, C4: electric capacity, C5: electric capacity, C6: electric capacity, C7: electric capacity, C8: electric capacity, C9: electric capacity, C10: electric capacity, C11: electric capacity, C12: electric capacity, CX: measured super capacitor, 5V: power supply, TX: serial line interface output terminal, RX: serial line interface input end.
Embodiment
Below in conjunction with accompanying drawing, the embodiment of the present invention is further described:
A kind of simple and easy super capacitor cubic content measurement circuit, as shown in Figure 1, comprise single-chip microcomputer U1, the first isolation RS232 bus transceiver U2, the first non-isolated RS232 bus transceiver U3, programmable DC power supply U4, the second isolation RS232 bus transceiver U5, the second non-isolated RS232 bus transceiver U6 and programmable electronic load U7.Single-chip microcomputer U1 and first isolates RS232 bus transceiver U2, the first non-isolated RS232 bus transceiver U3, programmable DC power supply U4 are connected successively, and the output terminal of programmable DC power supply U4 is connected with measured super capacitor CX; Single-chip microcomputer U1 and second isolates RS232 bus transceiver U5, the second non-isolated RS232 bus transceiver U6 is connected successively with programmable electronic load U7, and programmable electronic load U7 is connected with measured super capacitor CX.In the present embodiment, single-chip microcomputer U1 adopts PIC18F46K80 chip, first isolation RS232 bus transceiver U2, the second isolation RS232 bus transceiver U5 all adopt ADM3251 chip, and the first non-isolated RS232 bus transceiver U3, the second non-isolated RS232 bus transceiver U6 all adopt MAX3232 chip; What programmable DC power supply U4 adopted is M8874 chip, the M9713 chip that programmable electronic load U7 adopts.
Fig. 1 gives circuit diagram of the present invention, in figure, the 1st pin (input end of first serial line interface) of single-chip microcomputer U1 connects the 8th pin (transmission data output end) of the first isolation RS232 bus transceiver U2,44th pin (output terminal of first serial line interface) of single-chip microcomputer U1 connects the 9th pin (reception data input pin) of the first isolation RS232 bus transceiver U2,16th pin (transmission data output end) of the first isolation RS232 bus transceiver U2 connects the 8th pin (reception data input pin) of the first non-isolated RS232 bus transceiver U3,15th pin (reception data input pin) of the first isolation RS232 bus transceiver U2 connects the 7th pin (transmission data output end) of the first non-isolated RS232 bus transceiver U3,10th pin (transmission data input pin) of the first non-isolated RS232 bus transceiver U3 connects the output terminal TX of the serial line interface of programmable DC power supply U4,9th pin (reception data output end) of the first non-isolated RS232 bus transceiver U3 connects the serial line interface input end RX of programmable DC power supply U4.Single-chip microcomputer U1 controls output voltage and the electric current of programmable DC power supply U4 by the first isolation RS232 bus transceiver U2 and the first non-isolated RS232 bus transceiver U3, and reads output voltage and the electric current of programmable DC power supply U4.
Single-chip microcomputer U1 the 5th pin (input end of second serial line interface) connects the 8th pin (transmission data output end) that chip second isolates RS232 bus transceiver U5,4th pin (output terminal of second serial line interface) of single-chip microcomputer U1 connects the 9th pin (reception data input pin) of the second isolation RS232 bus transceiver U5,16th pin (transmission data output end) of the second isolation RS232 bus transceiver U5 connects the 8th pin (reception data input pin) of the second non-isolated RS232 bus transceiver U6,15th pin (reception data input pin) of the second isolation RS232 bus transceiver U5 connects the 7th pin (transmission data output end) of the second non-isolated RS232 bus transceiver U6,10th pin (transmission data input pin) of the second non-isolated RS232 bus transceiver U6 connects the output terminal TX of the serial line interface of programmable electronic load U7,9th pin (reception data output end) of the second non-isolated RS232 bus transceiver U6 connects the serial line interface input end RX of programmable electronic load U7.Therefore, single-chip microcomputer U1 controls input voltage and the electric current of programmable electronic load U7 by the second isolation RS232 bus transceiver U5 and the second non-isolated RS232 bus transceiver U6, and reads input voltage and the electric current of programmable electronic load U7.
Principle of work of the present invention is: in measuring capacitance capacity process, single-chip microcomputer U1 reads the initial voltage V1 of super capacitor by programmable DC power supply U4, then control programmable DC power supply U4 to charge to CX with steady current Ic, after charging stops, finally reading the charge complete voltage V2 of CX, and the time Tc of record charging.Capacity=the IcxTc/ (V2-V1) of super capacitor.In like manner, single-chip microcomputer U1 reads the initial voltage V3 of super capacitor by programmable electronic load U7, then control programmable electronic load U7 to discharge to CX with steady current Id, after electric discharge stops, finally reading the electric discharge end voltage V4 of CX, and the time Td of record charging.Capacity=the IdxTd/ (V3-V4) of super capacitor.
It is emphasized that; embodiment of the present invention is illustrative; instead of it is determinate; therefore the present invention includes the embodiment be not limited to described in embodiment; every other embodiments drawn by those skilled in the art's technical scheme according to the present invention, belong to the scope of protection of the invention equally.
Claims (3)
1. a simple and easy super capacitor cubic content measurement circuit, is characterized in that: comprise single-chip microcomputer, the first isolation RS232 bus transceiver, the first non-isolated RS232 bus transceiver, programmable DC power supply, the second isolation RS232 bus transceiver, the second non-isolated RS232 bus transceiver and programmable electronic load; RS232 bus transceiver isolated by single-chip microcomputer and first, the first non-isolated RS232 bus transceiver, programmable DC power supply are connected successively, and the output terminal of programmable DC power supply is connected with measured super capacitor; RS232 bus transceiver isolated by single-chip microcomputer and second, the second non-isolated RS232 bus transceiver is connected successively with programmable electronic load, and the output terminal of programmable electronic load is connected with measured super capacitor.
2. one according to claim 1 simple and easy super capacitor cubic content measurement circuit device, it is characterized in that: described single-chip microcomputer, first isolation RS232 bus transceiver, first non-isolated RS232 bus transceiver, programmable DC power supply, second isolation RS232 bus transceiver, concrete annexation between second non-isolated RS232 bus transceiver and programmable electronic load is: the data transmit-receive port that first serial line interface and first of single-chip microcomputer isolates RS232 bus transceiver is connected, another data transmit-receive port of first isolation RS232 bus transceiver is connected with the data transmit-receive port of the first non-isolated RS232 bus transceiver, another data transmit-receive port of first non-isolated RS232 bus transceiver is connected with the serial line interface of programming direct supply, the data transmit-receive port that second serial line interface and second of single-chip microcomputer isolates RS232 bus transceiver is connected, another data transmit-receive port of second isolation RS232 bus transceiver is connected with the data transmit-receive port of the second non-isolated RS232 bus transceiver, and another data transmit-receive port of the second non-isolated RS232 bus transceiver is connected with the serial line interface of programmable electronic load.
3. one according to claim 1 simple and easy super capacitor cubic content measurement circuit device, it is characterized in that: described single-chip microcomputer adopts PIC18F46K80 chip, described first isolation RS232 bus transceiver, the second isolation RS232 bus transceiver all adopt ADM3251 chip, and described first non-isolated RS232 bus transceiver, the second non-isolated RS232 bus transceiver all adopt MAX3232 chip; What described programmable DC power supply U4 adopted is M8874 chip, the M9713 chip that described programmable electronic load U7 adopts.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510502440.1A CN105334395A (en) | 2015-08-14 | 2015-08-14 | Simple super-capacitor capacity measurement circuit |
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| CN201510502440.1A CN105334395A (en) | 2015-08-14 | 2015-08-14 | Simple super-capacitor capacity measurement circuit |
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| CN105334395A true CN105334395A (en) | 2016-02-17 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109900967A (en) * | 2017-12-07 | 2019-06-18 | 北京金风科创风电设备有限公司 | Capacitance value detection method and device of super capacitor and wind generating set |
| CN111505386A (en) * | 2020-04-08 | 2020-08-07 | 东莞市仟泰自动化设备有限公司 | Method for detecting capacity of super capacitor |
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2015
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| CN109900967A (en) * | 2017-12-07 | 2019-06-18 | 北京金风科创风电设备有限公司 | Capacitance value detection method and device of super capacitor and wind generating set |
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