CN105242091A - Low-cost port multimode isolation detection method - Google Patents
Low-cost port multimode isolation detection method Download PDFInfo
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- CN105242091A CN105242091A CN201510716562.0A CN201510716562A CN105242091A CN 105242091 A CN105242091 A CN 105242091A CN 201510716562 A CN201510716562 A CN 201510716562A CN 105242091 A CN105242091 A CN 105242091A
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Abstract
The invention discloses a low-cost port multimode isolation detection method. The low-cost port multimode isolation detection method comprises: for solving the problems of complex circuit and high cost of conventional port detection, port states are distinguished through voltage division of an equivalent load and primary current-limiting resistance of a transformer, isolation and detection are merged together, and the method provided by the invention is different from a conventional isolation line inspection mode by which power supply and state detection require individual isolation.
Description
Technical field
The present invention relates to port isolation detection field, particularly relate to and a kind ofly realize port to be checked and main system for load module, input/output module, trunk module etc. and isolate and the low cost solution of measuring ability.
Background technology
In the port status process of load module beyond self communication system of monitoring, due to isolation of system, the power supply and the state-detection that cause port to examine line all need to do separately isolates, thus causes port observation circuit complexity, cost high.For this problem, propose a kind of polymorphic isolation detection of port of low cost.
Summary of the invention
The technical problem to be solved in the present invention is: provide a kind of new technical scheme, all needs to do separately the problem of isolating, be unlikely to again to bring the problem that hardware circuit is complicated, cost is high simultaneously with the power supply and state-detection that solve port inspection line.
The invention provides a kind of polymorphic isolation detection of port of low cost, it is characterized in that: use transformer to form an insulating power supply without feedback by Switching Power Supply mode.Power supply and main system that this transformer had both realized port inspection line are isolated, and realize again port and examine the state-detection of line and main system is isolated, will isolate and combining data detection.Thus make hardware circuit not need to be respectively the power supply of port inspection line and state-detection and main system design isolated.The polymorphic isolation detection of port of low cost according to claim 1, it is characterized by: only use 1 transformer just achieves the isolation that port inspection line is powered with state-detection and main system, and unlike traditional approach, transformer is only responsible for port inspection line and is powered and the isolation of main system, recycles other transformers or light lotus root and realizes port inspection line states and detect the isolation with main system.The polymorphic isolation detection of port of low cost according to claim 2, it is characterized by: by the difference of transformer secondary output load, cause the equivalent load of primary different, utilize the current-limiting resistance dividing potential drop of this equivalent load and primary to distinguish port status; Electric current simultaneously by regulating the current-limiting resistance of primary to regulate transformer secondary output load, improves interference free performance; Integrated circuit is simply to reduce costs; Software adopt time sharing power supply mode to reduce power consumption.
Accompanying drawing explanation
In order to be illustrated more clearly in the present invention's technical scheme of the prior art, be briefly described to the accompanying drawing used required in description of the prior art below.In the accompanying drawings:
Fig. 1 is port isolation observation circuit;
Embodiment
Clearly understand for making the object, technical solutions and advantages of the present invention, below in conjunction with embodiment of the present invention accompanying drawing, description clear, complete is further done to the technical scheme in the embodiment of the present invention, obviously, described embodiment is the one of the embodiment of the present invention, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
The invention provides a kind of polymorphic isolation detection of port of low cost, it is characterized in that: use transformer to form an insulating power supply without feedback by Switching Power Supply mode.Power supply and main system that this transformer had both realized port inspection line are isolated, and realize again port and examine the state-detection of line and main system is isolated, will for electric isolution and combining data detection.Thus make hardware circuit not need to be respectively the power supply of port inspection line and state-detection and main system design isolated.The polymorphic isolation detection of port of low cost according to claim 1, it is characterized by: only use 1 transformer just achieves the isolation that port inspection line is powered with state-detection and main system, and unlike traditional approach, transformer is only responsible for port inspection line and is powered and the isolation of main system, recycles other transformers or light lotus root and realizes port inspection line states and detect the isolation with main system.The polymorphic isolation detection of port of low cost according to claim 2, it is characterized by: by the difference of transformer secondary output load, cause the equivalent load of primary different, utilize the current-limiting resistance dividing potential drop of this equivalent load and primary to distinguish port status; Electric current simultaneously by regulating the current-limiting resistance of primary to regulate transformer secondary output load, improves interference free performance; Integrated circuit is simply to reduce costs; Software adopt time sharing power supply mode to reduce power consumption.With reference to accompanying drawing 1 port isolation observation circuit.Traditional port isolation observation circuit only uses transformer to provide stabilized voltage supply for port, the monitoring of port status needs to use additional isolation circuit (such as light lotus root buffer circuit etc.) that port status is passed to main system, detected by main system I/O port again, the composition of this circuit is complicated, and cost is higher.
In sum, utilize the mode of load equivalent electric resistance partial pressure differentiation state and tradition to isolate and examine compared with line mode, will isolate and combining data detection, circuit is simple, practical, efficient.
The foregoing is only embodiments of the invention; not thereby the scope of the claims of the present invention is limited; every utilize instructions of the present invention and accompanying drawing content to do equivalent structure or equivalent flow process conversion; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present invention.
Claims (3)
1. the polymorphic isolation detection of the port of low cost, is characterized in that: use transformer to form an insulating power supply without feedback by Switching Power Supply mode.Power supply and main system that this transformer had both realized port inspection line are isolated, and realize again port and examine the state-detection of line and main system is isolated, will isolate and combining data detection.
2. the polymorphic isolation detection of the port of low cost according to claim 1, it is characterized in that: only use 1 transformer just achieves the isolation that port inspection line is powered with state-detection and main system, and unlike traditional approach, transformer is only responsible for port inspection line and is powered and the isolation of main system, recycles other modes and realizes port inspection line states and detect the isolation with main system.
3. the polymorphic isolation detection of the port of low cost according to claim 2, it is characterized in that: by the difference of transformer secondary output load, cause the equivalent load of primary different, utilize the current-limiting resistance dividing potential drop of this equivalent load and primary to distinguish port status; Electric current simultaneously by regulating the current-limiting resistance of primary to regulate transformer secondary output load, improves interference free performance; Integrated circuit is simply to reduce costs; Software adopt time sharing power supply mode to reduce power consumption.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510716562.0A CN105242091A (en) | 2015-10-26 | 2015-10-26 | Low-cost port multimode isolation detection method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510716562.0A CN105242091A (en) | 2015-10-26 | 2015-10-26 | Low-cost port multimode isolation detection method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105242091A true CN105242091A (en) | 2016-01-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510716562.0A Pending CN105242091A (en) | 2015-10-26 | 2015-10-26 | Low-cost port multimode isolation detection method |
Country Status (1)
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| CN (1) | CN105242091A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102185485A (en) * | 2011-05-13 | 2011-09-14 | 深圳航天科技创新研究院 | Switch power magnetic isolation reactive circuit for feeding back output voltage error signal |
| CN103427655A (en) * | 2013-06-25 | 2013-12-04 | 广州金升阳科技有限公司 | Control method and controller |
| CN203674974U (en) * | 2014-01-21 | 2014-06-25 | 邹海平 | Circuit for enhancing power supply impacting and interference resistance properties of power-take switch |
-
2015
- 2015-10-26 CN CN201510716562.0A patent/CN105242091A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102185485A (en) * | 2011-05-13 | 2011-09-14 | 深圳航天科技创新研究院 | Switch power magnetic isolation reactive circuit for feeding back output voltage error signal |
| CN103427655A (en) * | 2013-06-25 | 2013-12-04 | 广州金升阳科技有限公司 | Control method and controller |
| CN203674974U (en) * | 2014-01-21 | 2014-06-25 | 邹海平 | Circuit for enhancing power supply impacting and interference resistance properties of power-take switch |
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| WD01 | Invention patent application deemed withdrawn after publication | ||
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Application publication date: 20160113 |