CN201999993U - Multi-channel potentiostat - Google Patents
Multi-channel potentiostat Download PDFInfo
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- CN201999993U CN201999993U CN2011200329504U CN201120032950U CN201999993U CN 201999993 U CN201999993 U CN 201999993U CN 2011200329504 U CN2011200329504 U CN 2011200329504U CN 201120032950 U CN201120032950 U CN 201120032950U CN 201999993 U CN201999993 U CN 201999993U
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- power supply
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- convertor
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Abstract
The utility model relates to a multi-channel potentiostat, which comprises a power supply multi-channel grouping unit, a converter circuit unit, a control unit, a synchronous on-off drive circuit and a control display module, wherein the power supply multi-channel grouping unit is connected with a converter circuit and then is connected with the circuit of the control unit, the circuit of the control unit is connected with a synchronous on-off circuit and the synchronous on-off circuit is connected with an on-off switching circuit in the converter circuit unit. The multi-channel potentiostat is characterized in that the multi-channel potentiostat additionally comprises a data signal isolation conversion circuit, the power supply multi-channel grouping unit comprises a grid lightning protection anti-interference circuit and a power supply multi-channel grouping circuit, the grid lightning protection anti-interference circuit is connected with the power supply multi-channel grouping circuit and the data signal isolation conversion circuit is connected with the circuit of the control unit. The utility model aims at providing the multi-channel potentiostat which has the advantages that multi-channel outputs are realized and are not affected mutually, constant-potential and constant-current automatic switching is realized and the cathode protection of complex areas can be effectively conducted.
Description
Technical field
The utility model relates to a kind of potentiostat, relates in particular to a kind of multichannel potentiostat that is used for regional galvanic protection.
Background technology
Cathodic protection system has good protective action to the buried metal that uses in oil, petrochemical industry, harbour, harbour and the municipal pipeline.At present, the galvanic protection power unit of domestic main use is a potentiostat.China's utility model patent; Granted publication CN201386137Y; patent name is in the patent document of " a kind of potentiostat of cathodic protection system "; a kind of potentiostat is disclosed; anti-jamming circuit is connected with filtering circuit by the front end rectifying circuit; filtering circuit is connected with power driving circuit; switch circuit is between power driving circuit and high-frequency isolation transformer; high-frequency isolation transformer is connected with output filtering and output sample circuit by the rear end rectifying circuit; also comprise central control unit in the potentiostat, central control unit is connected with power driving circuit; output filtering and output sample circuit connect.Adopt the potentiostat of this structure to protect, but also there are the following problems: 1, uniline potentiostat territory, the place galvanic protection of can't effectively standing to metal pipe line; 2, existing potentiostat does not possess the function of cutting continuous current from constant potential automatically, makes the reliability of galvanic protection be affected.
The utility model content
The utility model aims to provide a kind of multichannel output, is independent of each other, and constant potential, continuous current automatically switch the multichannel potentiostat that can effectively carry out the complex region galvanic protection.
The technical scheme that the utility model adopted is: the multichannel potentiostat, comprise the power supply duplex grouped element, the convertor circuit unit, control unit, synchronous break-make driving circuit, described power supply duplex grouped element is connected the back and is connected with the control unit circuit with convertor circuit, the control unit circuit is connected with synchronous on-off circuit, on-off circuit links to each other with the convertor circuit unit synchronously, it is characterized in that also comprising data signal isolated variable circuit, described power supply duplex grouped element comprises electrical network lightning protection anti-jamming circuit, the power supply duplex packet circuit, electrical network lightning protection anti-jamming circuit is connected with the power supply duplex packet circuit, and data signal isolated variable circuit is connected with described control unit circuit.
Described convertor circuit comprises controlled convertor circuit, filtering circuit, switch on and off circuit, exports sample circuit, exports anti-lightning strike anti-jamming circuit, controlled convertor circuit is connected with filtering circuit, filtering circuit is connected with the switch on and off circuit, the switch on and off circuit links to each other with the output sample circuit, and the output sample circuit is connected with the anti-lightning strike anti-jamming circuit of output.
Described control unit circuit comprises high precision relatively amplifying circuit, operational mode switching circuit, microcontroller circuit, and high precision comparison amplifying circuit and microcontroller circuit all are connected to the operational mode switching circuit.
Also comprise the control display module, described control display module is connected with described control unit circuit.
Also comprise the data communication module, described data communication module links to each other with control unit.
The beneficial effects of the utility model are: 1, circuit multichannel grouped element of the present utility model adopts transformer multichannel group technology, make the power supply that offers every road independent respectively, be independent of each other, can wide, the complicated zone of pipeline, protection zone; 2, adopt controlled Semiconductor Converting Technology in the convertor circuit of the present utility model, thereby guarantee the continuous adjusting of each road outward current; 3, the utility model adopts the comparison amplifying circuit of high gain, high linearity, high precision, stable performance to satisfy the needs of on-the-spot use.Adopt the control of microcontroller circuit online in real time,, realized the judgement of data gathering, running status by programming; pass through keyboard; can realize any conversion of working order, and make-and-break time can be provided with according to actual needs easily, satisfy the needs of galvanic protection.
Description of drawings
Accompanying drawing 1 is the complete machine functional block diagram of the utility model multichannel potentiostat;
Accompanying drawing 2 is single channel potentiostat functional block diagrams of the multichannel potentiostat of Fig. 1.
Embodiment
Below in conjunction with accompanying drawing and specific embodiment the utility model is described in detail:
Embodiment of the present utility model as shown in drawings, the multichannel potentiostat, comprise power supply duplex grouped element 1, convertor circuit unit 2, control unit 3, data signal isolated variable circuit 4, synchronous break-make driving circuit 5, control display module 7, power supply duplex grouped element 1 is connected the back and is connected with control unit circuit 3 with convertor circuit unit 2, control unit circuit 3 is connected with synchronous break-make driving circuit 5, and break-make driving circuit 5 links to each other with switch on and off circuit 23 in the convertor circuit unit 2 synchronously.Data signal isolated variable circuit 4 links to each other with output sample circuit 24, microcontroller circuit 33 between control unit circuit 3 and convertor circuit power supply 2.Circuit multichannel grouped element 1 adopts transformer multichannel group technology, makes the power supply that offers every road independent respectively, is independent of each other.
Power supply duplex grouped element 1 comprises lightning protection anti-jamming circuit 11, power supply duplex packet circuit 12, and electrical network lightning protection anti-jamming circuit 11 is connected with power supply duplex packet circuit 12.
Convertor circuit 2 comprises controlled convertor circuit 21, filtering circuit 22, switch on and off circuit 23, output sample circuit 24, the anti-lightning strike anti-jamming circuit 25 of output, controlled convertor circuit 21 is connected with filtering circuit 22, filtering circuit 22 is connected with switch on and off circuit 23, switch on and off circuit 23 links to each other with output sample circuit 24, and output sample circuit 24 is connected with the anti-lightning strike anti-jamming circuit 25 of output.Owing in convertor circuit 2, adopt controlled Semiconductor Converting Technology, thereby guarantee the continuous adjusting of each road outward current.
Described control unit circuit 3 comprises microcontroller circuit 33, compares amplifying circuit 32, operational mode switching circuit 31, and relatively amplifying circuit 32 and microcontroller circuit 33 all are connected to operational mode switching circuit 31.Control unit circuit 3 is cores of potentiostat, and the utility model adopts the comparison amplifying circuit 32 of high gain, high linearity, high precision, stable performance, makes the control accuracy of potentiostat be better than 5mV, and drift has been satisfied the needs of on-the-spot use less than 5mV.Adopt the control of microcontroller circuit 33 online in real time,, realized the judgement of data gathering, running status by programming; pass through keyboard; can realize any conversion of working order, and make-and-break time can be provided with according to actual needs easily, satisfy the needs of galvanic protection.
The utility model comprises control display module 7, and described control display module 7 is connected with microcontroller 33 in the control unit 3.Be equiped with data communication module 6 on the utility model, described data communication module 6 is connected to measurement and control center with after control unit 3 links to each other.Data communication module 6 adopts stdn, modular design; can be equipped with polytype communication interface (as USB interface, network interface, point-to-point interface, RS485 interface, RS232 interface) according to the needs of field data communication; satisfy the needs that cathodic protection system carries out remote measurement and control, conveniently carry out informationization, intelligent management.
Claims (6)
1. multichannel potentiostat, comprise the power supply duplex grouped element, the convertor circuit unit, control unit, synchronous break-make driving circuit, the control display module, described power supply duplex grouped element is connected the back and is connected with the control unit circuit with convertor circuit, the control unit circuit is connected with synchronous on-off circuit, synchronously on-off circuit links to each other with switch on and off circuit in the convertor circuit unit, it is characterized in that also comprising data signal isolated variable circuit, described power supply duplex grouped element comprises electrical network lightning protection anti-jamming circuit, the power supply duplex packet circuit, electrical network lightning protection anti-jamming circuit is connected with the power supply duplex packet circuit, and data signal isolated variable circuit is connected with described control unit circuit.
2. multichannel potentiostat according to claim 1, it is characterized in that: described convertor circuit comprises controlled convertor circuit, filtering circuit, switch on and off circuit, exports sample circuit, exports anti-lightning strike anti-jamming circuit, controlled convertor circuit is connected with filtering circuit, filtering circuit is connected with the switch on and off circuit, the switch on and off circuit links to each other with the output sample circuit, and the output sample circuit is connected with the anti-lightning strike anti-jamming circuit of output.
3. multichannel potentiostat according to claim 1, it is characterized in that: described control unit circuit comprises high precision relatively amplifying circuit, operational mode switching circuit, microcontroller circuit, and high precision comparison amplifying circuit and microcontroller circuit all are connected to the operational mode switching circuit.
4. multichannel potentiostat according to claim 1, it is characterized in that: also comprise the synchronous break-make driving circuit of multichannel, described control unit circuit is connected with the synchronous break-make driving circuit of multichannel, and the synchronous break-make driving circuit of multichannel is connected with switch on and off circuit in the convertor circuit.
5. multichannel potentiostat according to claim 1 is characterized in that: also comprise the control display module, described control display module is connected with described control unit circuit.
6. multichannel potentiostat according to claim 1 is characterized in that: also comprise the data communication module, described data communication module links to each other with control unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200329504U CN201999993U (en) | 2011-01-26 | 2011-01-26 | Multi-channel potentiostat |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200329504U CN201999993U (en) | 2011-01-26 | 2011-01-26 | Multi-channel potentiostat |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201999993U true CN201999993U (en) | 2011-10-05 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200329504U Expired - Fee Related CN201999993U (en) | 2011-01-26 | 2011-01-26 | Multi-channel potentiostat |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201999993U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109596694A (en) * | 2018-11-21 | 2019-04-09 | 中山大学 | A kind of measurement analysis device suitable for different impedance electrochemical systems |
-
2011
- 2011-01-26 CN CN2011200329504U patent/CN201999993U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109596694A (en) * | 2018-11-21 | 2019-04-09 | 中山大学 | A kind of measurement analysis device suitable for different impedance electrochemical systems |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111005 Termination date: 20200126 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |