CN202201981U - Cathode protection data acquisition device based on recommended standard (RS)-485 bus - Google Patents
Cathode protection data acquisition device based on recommended standard (RS)-485 bus Download PDFInfo
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- CN202201981U CN202201981U CN2011202892927U CN201120289292U CN202201981U CN 202201981 U CN202201981 U CN 202201981U CN 2011202892927 U CN2011202892927 U CN 2011202892927U CN 201120289292 U CN201120289292 U CN 201120289292U CN 202201981 U CN202201981 U CN 202201981U
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Abstract
The utility model discloses a cathode protection data acquisition device based on a recommended standard (RS)-485 bus. A pre-acquired voltage signal is input to a voltage isolation amplification circuit through a voltage anti-jamming filtering circuit, the voltage isolation amplification circuit is connected with a voltage acquisition circuit, the voltage acquisition circuit is connected with a micro-processing control circuit, a pre-acquired current signal is input to a current isolation amplification circuit through a current anti-jamming filtering circuit, the current isolation amplification circuit is connected with a current acquisition circuit, the current acquisition circuit is connected with the micro-processing control circuit, a pre-acquired reference potential signal is input to a reference potential isolation amplification circuit through a reference potential anti-jamming filtering circuit, the reference potential isolation amplification circuit is connected with a reference potential acquisition circuit, and the reference potential acquisition circuit is connected with the micro-processing control circuit. The cathode protection data acquisition device has the advantages that the running conditions of all systems can be timely understood, running parameters are reasonably adjusted, a fault is timely found and rapidly removed, and the safety running of the systems is ensured.
Description
Technical field
The utility model relates to a kind of cathodic protection monitoring equipment, relates in particular to a kind of galvanic protection data trap based on the RS-485 bus.
Background technology
Galvanic protection is extensively adopted in the anticorrosive metal system, and according to the practice at home and abroad empirical evidence, the galvanic protection effect is significant.Therefore, can slow down corrosion of metal with cathode protecting process at metal structures such as underground communication cable, petroleum pipe line, natural gas line, boats and ships, harbour, gate, chemical plants.The principle of galvanic protection: make the surface that is contacted with surrounding medium by the protection metallic substance realize the cathodic polarization state, realize the purpose of anticorrosive metal.
Manual measurement is adopted in the anticorrosion equipment (like potentiostat) of at present traditional impressed current cathodic anticorrosion protection system and the monitoring of cathode potential mostly, and manual testing's cycle is long, TP is few, is difficult to correctly embody whole preservative effect in the zone.
Summary of the invention
The utility model technical problem to be solved provides a kind of galvanic protection data trap based on the RS-485 bus.
The utility model solves the problems of the technologies described above the technical scheme that is adopted: a kind of galvanic protection data trap based on the RS-485 bus is characterized in that it comprises voltage anti-interference filtration circuit, voltage isolation amplifying circuit, voltage collection circuit, electric current anti-interference filtration circuit, electric current isolating amplifier circuit, current acquisition circuit, reference potential anti-interference filtration circuit, reference potential isolating amplifier circuit, reference potential Acquisition Circuit, little control and treatment circuit and RS-485 communicating circuit;
The voltage signal of gathering in advance is input to described voltage isolation amplifying circuit through described voltage anti-interference filtration circuit; The output terminal of voltage isolation amplifying circuit is connected with the input terminus of voltage collection circuit, and the output terminal of voltage collection circuit is connected with little control and treatment circuit;
The current signal of gathering in advance is input to described electric current isolating amplifier circuit through overcurrent anti-interference filtration circuit; The output terminal of electric current isolating amplifier circuit is connected with the input terminus of current acquisition circuit, and the output terminal of current acquisition circuit is connected with little control and treatment circuit;
The reference potential signal of gathering in advance is input to described reference potential isolating amplifier circuit through reference potential anti-interference filtration circuit; The output terminal of reference potential isolating amplifier circuit is connected with the input terminus of reference potential Acquisition Circuit, and the output terminal of described reference potential Acquisition Circuit is connected with little control and treatment circuit;
Communication signals in little control and treatment circuit is sent in the RS-485 bus through the RS-485 communicating circuit.
Also comprise microprocessor peripheral circuit and power source circuit, described little control and treatment circuit is connected with microprocessor peripheral circuit, and power source circuit is connected with little control and treatment circuit.
The voltage isolation amplifying circuit comprises the first precision meter magnifying glass and first operational amplifier, and described voltage collection circuit comprises that model is first precision photoelectric coupler and second operational amplifier of HCNR201;
Described electric current isolating amplifier circuit comprises the 3rd operational amplifier, and described current acquisition circuit comprises that model is second precision photoelectric coupler and the four-operational amplifier of HCNR201;
Described reference potential isolating amplifier circuit comprises the second precision meter magnifying glass and the 5th operational amplifier; Described reference potential Acquisition Circuit comprises that model is trilinear photoelectrical coupler and the 6th operational amplifier of HCNR201; Described little control and treatment circuit comprises that model is first chip of C8051F350; Described RS-485 communicating circuit comprises that model is second chip of ADUM1301BRWZ and the 3rd chip that model is MAX487EPA
The output terminal of the first precision meter magnifying glass is connected with the input terminus of first operational amplifier; The output terminal of first operational amplifier is connected with the input terminus of first precision photoelectric coupler; The output terminal of first precision photoelectric coupler is connected with the input terminus of second operational amplifier, and the output terminal of described second operational amplifier is connected with the 4th pin of first chip;
The output terminal of the 3rd operational amplifier is connected with the input terminus of second precision photoelectric coupler; The output terminal of described second precision photoelectric coupler is connected with the input terminus of four-operational amplifier, and the output terminal of four-operational amplifier is connected with the 3rd pin of first chip;
The output terminal of the second precision meter magnifying glass is connected with the input terminus of the 5th operational amplifier; The output terminal of the 5th operational amplifier is connected with the input terminus of trilinear photoelectrical coupler; The output terminal of trilinear photoelectrical coupler is connected with the input terminus of the 6th operational amplifier, and the output terminal of the 6th operational amplifier is connected with the 5th pin of first chip;
Described first chip is connected with second chip, and second chip is connected with the 3rd chip, and the 3rd chip is connected with the RS-485 bus
Compared with prior art, the advantage of the utility model helps guaranteeing the safe operation of cathodic protection system, improves the operational efficiency of cathodic protection system.Guarantee to obtain the protection effect of expection, prolong by the work-ing life of protective.Make things convenient for the management and the regulation and control of anticathode securing system, reduce the management and the working cost of galvanic protection.This utility model is to utilize modern microcomputer and means of communication; Realize the remote centralized supervision and control of a plurality of scenes or open-air impressed current cathodic protection system; Reach purpose to the real-time monitoring of a plurality of securing systems; Help understanding immediately the running condition of each system, rationally regulate operating parameter and in time find fault and eliminating immediately, guarantee the safe operation of system.
Description of drawings
Fig. 1 is the structured flowchart of the utility model;
Fig. 2 is the schematic circuit of the utility model.
Embodiment
Embodiment describes in further detail the utility model below in conjunction with accompanying drawing.
A kind of galvanic protection data trap based on the RS-485 bus, it comprises voltage anti-interference filtration circuit 1, voltage isolation amplifying circuit 2, voltage collection circuit 3, electric current anti-interference filtration circuit 4, electric current isolating amplifier circuit 5, current acquisition circuit 6, reference potential anti-interference filtration circuit 7, reference potential isolating amplifier circuit 8, reference potential Acquisition Circuit 9, little control and treatment circuit 10 and RS-485 communicating circuit 13;
The voltage signal of gathering in advance is input to voltage isolation amplifying circuit 2 through superpotential anti-interference filtration circuit 1; The output terminal of voltage isolation amplifying circuit 2 is connected with the input terminus of voltage collection circuit 3, and the output terminal of voltage collection circuit 3 is connected with little control and treatment circuit 10;
The current signal of gathering in advance is input to electric current isolating amplifier circuit 5 through overcurrent anti-interference filtration circuit 4; The output terminal of electric current isolating amplifier circuit 5 is connected with the input terminus of current acquisition circuit 6, and the output terminal of current acquisition circuit 6 is connected with little control and treatment circuit 10;
The reference potential signal of gathering in advance is input to reference potential isolating amplifier circuit 8 through reference potential anti-interference filtration circuit 7; The output terminal of reference potential isolating amplifier circuit 8 is connected with the input terminus of reference potential Acquisition Circuit 9, and the output terminal of reference potential Acquisition Circuit 9 is connected with little control and treatment circuit 10;
Communication signals in little control and treatment circuit 10 is sent in the RS-485 bus through RS-485 communicating circuit 13.
Also comprise microprocessor peripheral circuit 12 and power source circuit 11, little control and treatment circuit 10 is connected with microprocessor peripheral circuit 12, and power source circuit 11 is connected with little control and treatment circuit 10.
Voltage isolation amplifying circuit 2 comprises the first precision meter magnifying glass IC3 and the first operational amplifier IC2A, and voltage collection circuit 3 comprises that model is the first precision photoelectric coupler IC4 and the second operational amplifier IC13A of HCNR201;
Electric current isolating amplifier circuit 5 comprises the 3rd operational amplifier IC2B, and current acquisition circuit 6 comprises that model is second precision photoelectric coupler IC6 and the four-operational amplifier IC13B of HCNR201;
Reference potential isolating amplifier circuit 8 comprises the second precision meter magnifying glass IC8 and the 5th operational amplifier IC12A; Reference potential Acquisition Circuit 9 comprises that model is trilinear photoelectrical coupler IC5 and the 6th operational amplifier IC15A of HCNR201; Little control and treatment circuit 10 comprises that model is first chip of C8051F350; RS-485 communicating circuit 13 comprises that model is second chip of ADUM1301BRWZ and the 3rd chip that model is MAX487EPA
The output terminal of the first precision meter magnifying glass IC3 is connected with the input terminus of the first operational amplifier IC2A; The output terminal of the first operational amplifier IC2A is connected with the input terminus of the first precision photoelectric coupler IC4; The output terminal of the first precision photoelectric coupler IC4 is connected with the input terminus of the second operational amplifier IC13A, and the output terminal of the second operational amplifier IC13A is connected with the 4th pin of first chip;
The output terminal of the 3rd operational amplifier IC2B is connected with the input terminus of the second precision photoelectric coupler IC6; The output terminal of the second precision photoelectric coupler IC6 is connected with the input terminus of four-operational amplifier IC13B, and the output terminal of four-operational amplifier IC13B is connected with the 3rd pin of first chip;
The output terminal of the second precision meter magnifying glass IC8 is connected with the input terminus of the 5th operational amplifier IC12A; The output terminal of the 5th operational amplifier IC12A is connected with the input terminus of trilinear photoelectrical coupler IC5; The output terminal of trilinear photoelectrical coupler IC5 is connected with the input terminus of the 6th operational amplifier IC15A, and the output terminal of the 6th operational amplifier IC15A is connected with the 5th pin of first chip;
First chip is connected with second chip, and second chip is connected with the 3rd chip, and the 3rd chip is connected with the RS-485 bus.
The principle of work of the utility model: the voltage signal of gathering in advance is connected in the microprocessor control circuit 10 through superpotential anti-interference filtration circuit 1, voltage isolation amplifying circuit 2, voltage collection circuit 3.The current signal of gathering in advance is connected in the microprocessor control circuit 10 through overcurrent anti-interference filtration circuit 4, electric current isolating amplifier circuit 5, current acquisition circuit 6.The reference potential signal of gathering in advance is connected in the microprocessor control circuit 10 through reference potential anti-interference filtration circuit 7, reference potential isolating amplifier circuit 8, reference potential Acquisition Circuit 9.Microprocessor control circuit 10 is sent in the RS-485 bus through RS-485 communicating circuit 13 through 485 signals that internal processes calculating generation meets the upper machine communication agreement.
Claims (3)
1. the galvanic protection data trap based on the RS-485 bus is characterized in that it comprises voltage anti-interference filtration circuit, voltage isolation amplifying circuit, voltage collection circuit, electric current anti-interference filtration circuit, electric current isolating amplifier circuit, current acquisition circuit, reference potential anti-interference filtration circuit, reference potential isolating amplifier circuit, reference potential Acquisition Circuit, little control and treatment circuit and RS-485 communicating circuit;
The voltage signal of gathering in advance is input to described voltage isolation amplifying circuit through described voltage anti-interference filtration circuit; The output terminal of voltage isolation amplifying circuit is connected with the input terminus of voltage collection circuit, and the output terminal of voltage collection circuit is connected with little control and treatment circuit;
The current signal of gathering in advance is input to described electric current isolating amplifier circuit through overcurrent anti-interference filtration circuit; The output terminal of electric current isolating amplifier circuit is connected with the input terminus of current acquisition circuit, and the output terminal of current acquisition circuit is connected with little control and treatment circuit;
The reference potential signal of gathering in advance is input to described reference potential isolating amplifier circuit through reference potential anti-interference filtration circuit; The output terminal of reference potential isolating amplifier circuit is connected with the input terminus of reference potential Acquisition Circuit, and the output terminal of described reference potential Acquisition Circuit is connected with little control and treatment circuit;
Communication signals in little control and treatment circuit is sent in the RS-485 bus through the RS-485 communicating circuit.
2. a kind of galvanic protection data trap according to claim 1 based on the RS-485 bus; It is characterized in that also comprising microprocessor peripheral circuit and power source circuit; Described little control and treatment circuit is connected with microprocessor peripheral circuit, and power source circuit is connected with little control and treatment circuit.
3. a kind of galvanic protection data trap according to claim 1 based on the RS-485 bus; It is characterized in that the voltage isolation amplifying circuit comprises the first precision meter magnifying glass and first operational amplifier, described voltage collection circuit comprises that model is first precision photoelectric coupler and second operational amplifier of HCNR201;
Described electric current isolating amplifier circuit comprises the 3rd operational amplifier, and described current acquisition circuit comprises that model is second precision photoelectric coupler and the four-operational amplifier of HCNR201;
Described reference potential isolating amplifier circuit comprises the second precision meter magnifying glass and the 5th operational amplifier; Described reference potential Acquisition Circuit comprises that model is trilinear photoelectrical coupler and the 6th operational amplifier of HCNR201; Described little control and treatment circuit comprises that model is first chip of C8051F350; Described RS-485 communicating circuit comprises that model is second chip of ADUM1301BRWZ and the 3rd chip that model is MAX487EPA
The output terminal of the first precision meter magnifying glass is connected with the input terminus of first operational amplifier; The output terminal of first operational amplifier is connected with the input terminus of first precision photoelectric coupler; The output terminal of first precision photoelectric coupler is connected with the input terminus of second operational amplifier, and the output terminal of described second operational amplifier is connected with the 4th pin of first chip;
The output terminal of the 3rd operational amplifier is connected with the input terminus of second precision photoelectric coupler; The output terminal of described second precision photoelectric coupler is connected with the input terminus of four-operational amplifier, and the output terminal of four-operational amplifier is connected with the 3rd pin of first chip;
The output terminal of the second precision meter magnifying glass is connected with the input terminus of the 5th operational amplifier; The output terminal of the 5th operational amplifier is connected with the input terminus of trilinear photoelectrical coupler; The output terminal of trilinear photoelectrical coupler is connected with the input terminus of the 6th operational amplifier, and the output terminal of the 6th operational amplifier is connected with the 5th pin of first chip;
Described first chip is connected with second chip, and second chip is connected with the 3rd chip, and the 3rd chip is connected with the RS-485 bus.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202892927U CN202201981U (en) | 2011-08-10 | 2011-08-10 | Cathode protection data acquisition device based on recommended standard (RS)-485 bus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202892927U CN202201981U (en) | 2011-08-10 | 2011-08-10 | Cathode protection data acquisition device based on recommended standard (RS)-485 bus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202201981U true CN202201981U (en) | 2012-04-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202892927U Expired - Fee Related CN202201981U (en) | 2011-08-10 | 2011-08-10 | Cathode protection data acquisition device based on recommended standard (RS)-485 bus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202201981U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103451661A (en) * | 2013-04-28 | 2013-12-18 | 江苏正能石化技术服务有限公司 | Cathode protection wireless monitoring system based on GPRS (General Packet Radio Service) network |
| CN104451704A (en) * | 2014-12-08 | 2015-03-25 | 西安石油大学 | Potential detection and collection system for pulse constant potential power supply |
-
2011
- 2011-08-10 CN CN2011202892927U patent/CN202201981U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103451661A (en) * | 2013-04-28 | 2013-12-18 | 江苏正能石化技术服务有限公司 | Cathode protection wireless monitoring system based on GPRS (General Packet Radio Service) network |
| CN104451704A (en) * | 2014-12-08 | 2015-03-25 | 西安石油大学 | Potential detection and collection system for pulse constant potential power supply |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: JIANGSU ZHENGNENG PETROLCHMICAL TECHNOLOGY SERVICE Free format text: FORMER OWNER: NINGBO ZHONGKE CORROSION CONTROL ENGINEERING TECHNOLOGY CO., LTD. Effective date: 20140326 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 315040 NINGBO, ZHEJIANG PROVINCE TO: 215513 SUZHOU, JIANGSU PROVINCE |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20140326 Address after: 215513 Jiangsu Province Economic and Technological Development Zone Changshou City Science Park Institute of Road No. 7, Room 203 Patentee after: Jiangsu Zhengneng Petroleum Technology Service Co., Ltd. Address before: 509, room 5, building 999, No. 315040, sailing Road, hi tech Zone, Zhejiang, Ningbo Patentee before: Ningbo Zhongke Corrosion Control Engineering Technology Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120425 Termination date: 20150810 |
|
| EXPY | Termination of patent right or utility model |