CN206506449U - Can adjust automatically polarity electric current loop lightning protection interface adapter - Google Patents
Can adjust automatically polarity electric current loop lightning protection interface adapter Download PDFInfo
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- CN206506449U CN206506449U CN201720132016.7U CN201720132016U CN206506449U CN 206506449 U CN206506449 U CN 206506449U CN 201720132016 U CN201720132016 U CN 201720132016U CN 206506449 U CN206506449 U CN 206506449U
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- 239000003990 capacitor Substances 0.000 claims abstract description 7
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- 208000033999 Device damage Diseases 0.000 abstract description 2
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- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
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Abstract
The utility model discloses it is a kind of can adjust automatically polarity electric current loop lightning protection interface adapter, including input (1), output end (5).Described input (1) contains tri- interfaces of I1, I2, EGND, described output end (5) contains tri- interfaces of I+, I, EGND, and TVS pipe (2), rectifier bridge (3), common-mode filter (4) and filter capacitor are also sequentially between input (1), output end (5)；Described filter capacitor contains electric capacity C1, electric capacity C2, electric capacity C3, and electric capacity C1, electric capacity C2, electric capacity C3 are linked in sequence and form loop.The utility model is remarkably improved the destruction of the antijamming capability, suppression highfield and induced lightening of instrument and system to equipment, user need not distinguish both positive and negative polarity when inputting terminated line, avoid polarity connection error and cause device damage, 4 20mA electric currents transmission circuits and various 4 20mA electric current loops application scenarios for resonant mode densimeter measurement, are particularly suitable for applying in the resonant mode densitometer that mine concentration is applied.
Description
Technical field
The utility model belongs to measure and control instrument technical field, and in particular to a kind of 4- for resonant mode densimeter measurement
20mA electric current transmission circuits, while being also suitable various 4-20mA electric current loops application scenarios, are particularly suitable in mine concentration application
Resonant mode densitometer in apply.
Background technology
Electric current loop is a kind of analogue communication mode, compared with various modern digital communication modes, the volume that it need not be complicated
Code, decoding effort, communication mode are simple；With higher antijamming capability, have very in the complicated industry spot of noise circumstance
High reliability.
At present, there is following defect in existing current loop circuit：
(1) applied under forceful electric power magnetic environment, be easily introduced electromagnetic interference, have influence on the stability of system；
(2) when applying in the wild, it is easily introduced thunder and lightning and causes instrument or device systems to damage；
(3) wiring is it is noted that distinguish positive-negative polarity, the connection of mistake can cause signal to transmit, or even can cause interface
Circuit is damaged.
The content of the invention
In order to overcome deficiencies of the prior art, the utility model provides a kind of strong antijamming capability, can
Suppress highfield and induced lightening to the destruction of equipment can adjust automatically polarity electric current loop lightning protection interface adapter.
To realize above-mentioned purpose of the present utility model, the utility model can the electric current loop lightning protection interface of adjust automatically polarity fit
Orchestration uses following technical scheme：
The utility model can adjust automatically polarity electric current loop lightning protection interface adapter include input, output end.It is described
Input contain tri- interfaces of I1, I2, EGND, described output end contains tri- interfaces of I+, I-, EGND, in input, defeated
Go out between holding and be also sequentially with TVS pipe, rectifier bridge, common-mode filter and filter capacitor；Described filter capacitor contain electric capacity C1,
Electric capacity C2, electric capacity C3, electric capacity C1, electric capacity C2, electric capacity C3 are linked in sequence and form loop.The I1 of the input passes through TVS pipe
Z1 meet EGND, the I2 of the input meets EGND by the Z2 of TVS pipe, the Z3 connections that the I1 of the input passes through TVS pipe
I2.The AC1 ends of the rectifier bridge connect the I1 of input, and the AC2 ends of the rectifier bridge connect the I2 of input, the rectifier bridge
Output end DC+ connection common-mode filters first input pin；The output end DC- connection common-mode filters of the rectifier bridge
Second input pin.The I+ of the output end and the first output pin of common-mode filter are connected, the I- of the output end
It is connected with the second output pin of common-mode filter, the I+ of the output end is connected by electric capacity C1 with EGND, the output end
I- be connected by electric capacity C2 with EGND, the I+ of the output end passes through electric capacity C3 and the I- of output end connections.
For enhancing antijamming capability, suppress the destruction of highfield and induced lightening to equipment, adapt to resonant mode densimeter measurement
The demand of the measuring environment particularly adverse circumstances such as iron mine beneficiation factory forceful electric power magnetic environment, strong noise environment, described rectifier bridge
Using DB107, described common-mode filter uses SCM7038F, and Z1, Z2 of described TVS pipe all use P6KE36A, described
The Z3 of TVS pipe uses P6KE36CA.
The utility model can the operation principle of electric current loop lightning protection interface adapter of adjust automatically polarity be：
When the I1 of input be just, I2 be negative when, the I+ that output end is made after the rectified bridge rectification of input current be just, I- be
It is negative.When the I1 of input be bear, I2 is timing, make after the rectified bridge rectification of input current output end still using I+ as just, I- be
It is negative.
When interference signal is introduced by the I1 and I2 of input, interference signal presses down through common-mode filter and electric capacity C1, C2, C3
System and filter, it is to avoid influence of the interference signal to output.
When thunder and lightning is incorporated into input, when thunder and lightning high pressure is higher than the threshold voltage of TVS pipe, TVS pipe conducting high pressure is passed through
AGND ends are released to the earth, it is to avoid destruction of the thunder and lightning high pressure to rear class.
The utility model can adjust automatically polarity electric current loop lightning protection interface adapter use above technical scheme after, have
Advantages below：It is remarkably improved the destruction of the antijamming capability, suppression highfield and induced lightening of instrument and system to equipment, user
Both positive and negative polarity need not be distinguished when inputting terminated line, it is to avoid polarity connection error causes device damage.
Brief description of the drawings
Fig. 1 be the utility model can adjust automatically polarity electric current loop lightning protection interface adapter circuit theory diagram；
Fig. 2 be the utility model the utility model can adjust automatically polarity electric current loop lightning protection interface adapter circuit structure
Contact schematic diagram.
Reference is：1- inputs；2-TVS is managed；3- rectifier bridges；4- common-mode filters；5- output ends, a- common mode filterings
First output pin of device, the first output pin of b- common-mode filters, the second output pin of c- common-mode filters, d- common modes
Second input pin of wave filter.
Embodiment
With reference to the accompanying drawings and examples to utility model can the electric current loop lightning protection interface adapter of adjust automatically polarity do
It is further described.
The utility model as shown in Figure 1 can adjust automatically polarity electric current loop lightning protection interface adapter circuit theory diagram
And find out with reference to Fig. 2, the utility model can the electric current loop lightning protection interface adapter of adjust automatically polarity be by input 1, TVS pipe
2nd, rectifier bridge 3, common-mode filter 4, filter capacitor, output end 5 sequentially couple composition, described input 1 containing I1, I2,
Tri- interfaces of EGND, described output end 5 contains tri- interfaces of I+, I-, EGND, and described filter capacitor contains electric capacity C1, electricity
Hold C2, electric capacity C3, electric capacity C1, electric capacity C2, electric capacity C3 are linked in sequence and form loop；Described rectifier bridge 3 is DB107, described
Common-mode filter 4 be SCM7038F.
The I1 of the input 1 meets EGND by the Z1 of TVS pipe 2, and the I2 of the input 1 is connect by the Z2 of TVS pipe 2
The Z3 connections I2 that EGND, the I1 of the input 1 pass through TVS pipe；Z1, Z2 of described TVS pipe 2 all use P6KE36A, described
The Z3 of TVS pipe 2 use P6KE36CA.
The AC1 ends of the rectifier bridge 3 connect the I1 of input 1, and the AC2 ends of the rectifier bridge 3 connect the I2 of input 1,
First input pin a, the output end DC- of the rectifier bridge 3 of the output end DC+ connections common-mode filter 4 of the rectifier bridge 3
Connect second input pin d of common-mode filter 4；The I+ of the output end 5 and the first output pin b of common-mode filter 4
Connection, the I- of the output end 5 is connected with the second output pin c of common-mode filter 4, and the I+ of the output end 5 passes through electric capacity
C1 is connected with EGND；The I- of the output end 5 is connected by electric capacity C2 with EGND, the I+ of the output end 5 by electric capacity C3 with
The I- connections of output end 5.
The utility model can adjust automatically polarity electric current loop lightning protection interface adapter in resonant mode densitometer and its
Applied in its mining survey instrument, the field application more than 2 years is it was verified that the utility model has circuit performance stable, reliable
Property it is high, can lightning protection, good in anti-interference performance the characteristics of, technique effect, economic effect are obvious.
Claims (3)
1. it is a kind of can adjust automatically polarity electric current loop lightning protection interface adapter, including input (1), output end (5), its feature
It is：Described input (1) contains tri- interfaces of I1, I2, EGND, and described output end (5) contains I+, I-, EGND tri-
Interface, is also sequentially with TVS pipe (2), rectifier bridge (3), common-mode filter (4) and filter between input (1), output end (5)
Ripple electric capacity；Described filter capacitor contains electric capacity C1, electric capacity C2, electric capacity C3, and electric capacity C1, electric capacity C2, electric capacity C3 are linked in sequence simultaneously
Form loop；
The I1 of the input (1) meets EGND by the Z1 of TVS pipe (2), the Z2 that the I2 of the input (1) passes through TVS pipe (2)
Meet EGND, the Z3 connections I2 that the I1 of the input (1) passes through TVS pipe；
The I1 of the AC1 ends connection input (1) of the rectifier bridge (3), the AC2 ends connection input (1) of the rectifier bridge (3)
I2, first input pin (a) of the output end DC+ connection common-mode filters (4) of the rectifier bridge (3), the rectifier bridge (3)
Output end DC- connection common-mode filters (4) second input pin (d)；
The I+ of the output end (5) is connected with the first output pin (b) of common-mode filter (4), the I- of the output end (5) with
The second output pin (c) connection of common-mode filter (4), the I+ of the output end (5) is connected by electric capacity C1 with EGND；It is described
The I- of output end (5) is connected by electric capacity C2 with EGND, and the I+ of the output end (5) passes through electric capacity C3 and the I- of output end (5)
Connection.
2. as claimed in claim 1 can adjust automatically polarity electric current loop lightning protection interface adapter, it is characterised in that：Described
Rectifier bridge (3) is DB107, and described common-mode filter (4) is SCM7038F.
3. as claimed in claim 1 or 2 can adjust automatically polarity electric current loop lightning protection interface adapter, it is characterised in that：Institute
Z1, the Z2 for the TVS pipe (2) stated all use P6KE36A, the Z3 of described TVS pipe (2) to use P6KE36CA.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720132016.7U CN206506449U (en) | 2017-02-14 | 2017-02-14 | Can adjust automatically polarity electric current loop lightning protection interface adapter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720132016.7U CN206506449U (en) | 2017-02-14 | 2017-02-14 | Can adjust automatically polarity electric current loop lightning protection interface adapter |
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| Publication Number | Publication Date |
|---|---|
| CN206506449U true CN206506449U (en) | 2017-09-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201720132016.7U Active CN206506449U (en) | 2017-02-14 | 2017-02-14 | Can adjust automatically polarity electric current loop lightning protection interface adapter |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106712482A (en) * | 2017-02-14 | 2017-05-24 | 中钢集团马鞍山矿山研究院有限公司 | Anti-thunder and input polarity automatic adjusting electric current loop interface adapter |
-
2017
- 2017-02-14 CN CN201720132016.7U patent/CN206506449U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106712482A (en) * | 2017-02-14 | 2017-05-24 | 中钢集团马鞍山矿山研究院有限公司 | Anti-thunder and input polarity automatic adjusting electric current loop interface adapter |
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Address after: 243000 Xitang Road, Ma'anshan Economic Development Zone, Anhui, No. 666 Co-patentee after: HUAWEI METAL MINERAL RESOURCE EFFICIENT RECYCLING UTILIZATION NATIONAL ENGINEERING RESEARCH CENTER Co.,Ltd. Patentee after: MAANSHAN Mine Research Institute Co.,Ltd. Address before: 243000 Xitang Road, Ma'anshan Economic Development Zone, Anhui, No. 666 Co-patentee before: HUAWEI METAL MINERAL RESOURCE EFFICIENT RECYCLING UTILIZATION NATIONAL ENGINEERING RESEARCH CENTER Co.,Ltd. Patentee before: SINOSTEEL MAANSHAN INSTITUTE OF MINING RESEARCH Co.,Ltd. |