CN102594322A - Passive normally-closed type solid state relay - Google Patents
Passive normally-closed type solid state relay Download PDFInfo
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- CN102594322A CN102594322A CN2011104314911A CN201110431491A CN102594322A CN 102594322 A CN102594322 A CN 102594322A CN 2011104314911 A CN2011104314911 A CN 2011104314911A CN 201110431491 A CN201110431491 A CN 201110431491A CN 102594322 A CN102594322 A CN 102594322A
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- state relay
- solid state
- normally
- solid
- closed
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Abstract
The invention relates to the technical field of a solid state relay, in particular to a passive normally-closed type solid state relay. The passive normally-closed type solid state relay comprises a small-current normally-closed solid state relay, a small-current normally-open solid state relay and an optical coupling loop, wherein the small-current normally-closed solid state relay and the small-current normally-open solid state relay respectively comprise a control signal input end, a rectifying voltage stabilizing circuit, an optical coupling trigger control circuit and a resistance capacitance (RC) absorption protection circuit, and two ends of the optical coupling loop are respectively and electrically connected with the small-current normally-closed solid state relay and the small-current normally-open solid state relay. The passive normally-closed type solid state relay provided by the invention realizes the effect of using weak current for controlling the switch-on or switch-off operation of strong current, in addition, the low-voltage release protection is also realized, the safety insurance effect is reached, and meanwhile, the control capability is high.
Description
Technical field
The present invention relates to the relay technical field, particularly a kind of passive normally-closed formula solid-state relay.
Background technology
In automatic field, some relays can not satisfy the needs of high automation gradually at present, and relay only is applied in control loop and protects in the loop, as a switch of often opening, just realizes the function of crawl; The contact capacity of relay is smaller simultaneously; Can't satisfy the control needs of equipment; To this phenomenon need design a kind of can totalizing relay and the advantage of contactor, realize controlling to connect perhaps cutting off forceful electric power with light current, have the low-voltage release guard and control relay capacious.
Summary of the invention
To prior art problems, the present invention proposes a kind of passive normally-closed formula solid-state relay, realize controlling connection or cutting off forceful electric power, but also have the low-voltage release guard with light current, play the effect of security insurance; It is big to control capacity simultaneously.
For reaching the object of the invention; What a kind of passive normally-closed formula solid-state relay of the present invention comprised the normally closed solid-state relay of little electric current, little electric current often opens solid-state relay and optocoupler loop, and the solid-state relay of often opening of the normally closed solid-state relay of said little electric current and little electric current includes signal input end, regulator rectifier circuit, optocoupler trigger control circuit and RC and absorbs the protection loop; The two ends in said optocoupler loop are connected with the normally closed solid-state relay of little electric current and the solid-state relay of often opening of little electric current respectively.
The operation principle of passive normally-closed formula solid-state relay of the present invention is: when the main loop circuit access failure, the normally closed solid-state relay of little electric current is in conducting state, and other switching point then is in off-state; When main loop circuit was connected, the former solid-state relay that is in closure state broke off, and the former solid-state relay of often opening that is in off-state then changes conducting state into; When often opening solid-state relay work, normally closed solid-state relay triggerless, promptly normally closed solid-stately do not work; When operating, utilize described auxiliary direct current optocoupler loop to break off major loop.
Passive normally-closed formula solid-state relay of the present invention can be used as a kind of double-standard switching device; As the control motor; Also can be used for controlling other electrical load; Like electric equipments such as electric heater, illumination, electric welding machine, capacitor, shop equipment, electric heater, machine-tool and various kinds electric power units, be mainly used in the protection or various manufacturing machine automatic control circuit of electric equipment.
Passive normally-closed formula solid-state relay of the present invention combines the advantage of relay and contactor, can realize controlling with light current and connect or cut off forceful electric power, but also have the low-voltage release guard, plays the effect of security insurance.It is big to control capacity simultaneously, can be used for the big equipment of frequent starting electric current; Also can be used for the automatic operation of far distance controlled power consumption equipment and stop.
Description of drawings
Through the detailed description below in conjunction with accompanying drawing, aforesaid purpose, the feature and advantage with other of the present invention will become obvious.Wherein:
Shown in Figure 1 is that passive normally-closed formula solid-state relay of the present invention is formed structural representation;
Shown in Figure 2 is the circuit theory diagrams of passive normally-closed formula solid-state relay of the present invention.
Embodiment
Of the present invention passive normally-closed formula solid-state relay as shown in Figure 1 is formed structural representation; What the passive normally-closed formula solid-state relay of one embodiment of the present of invention comprised the normally closed solid-state relay of little electric current, little electric current often opens solid-state relay and optocoupler loop, and the solid-state relay of often opening of the normally closed solid-state relay of said little electric current and little electric current includes signal input end, regulator rectifier circuit, optocoupler trigger control circuit and RC and absorbs the protection loop; The two ends in said optocoupler loop are connected with the normally closed solid-state relay of little electric current and the solid-state relay of often opening of little electric current respectively.
Refer again to the circuit theory diagrams of of the present invention passive normally-closed formula solid-state relay shown in Figure 2; The operation principle of passive normally-closed formula solid-state relay of the present invention is: when the main loop circuit access failure; The normally closed solid-state relay of little electric current is in conducting state, and other switching point then is in off-state; When main loop circuit was connected, the former solid-state relay that is in closure state broke off, and the former solid-state relay of often opening that is in off-state then changes conducting state into; When often opening solid-state relay work, normally closed solid-state relay triggerless, promptly normally closed solid-stately do not work; Described auxiliary direct current optocoupler loop is used for disconnection/conducting major loop.
Passive normally-closed formula solid-state relay of the present invention combines the advantage of relay and contactor, can realize controlling with the optocoupler loop of light current and connect or cut off the forceful electric power major loop, but also have the low-voltage release guard, plays the effect of security insurance; Its control capacity is big, can be used for the big equipment of frequent starting electric current; Also can be used for the automatic operation of far distance controlled power consumption equipment and stop.
The present invention is not limited to described embodiment, and those skilled in the art still can do some corrections or change, so rights protection scope of the present invention is as the criterion with claims restricted portion not breaking away from spirit of the present invention promptly openly in the scope.
Claims (1)
1. passive normally-closed formula solid-state relay; What it comprised the normally closed solid-state relay of little electric current, little electric current often opens solid-state relay and optocoupler loop, and the solid-state relay of often opening of the normally closed solid-state relay of said little electric current and little electric current includes signal input end, regulator rectifier circuit, optocoupler trigger control circuit and RC and absorbs the protection loop; The two ends in said optocoupler loop are connected with the normally closed solid-state relay of little electric current and the solid-state relay of often opening of little electric current respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011104314911A CN102594322A (en) | 2011-12-20 | 2011-12-20 | Passive normally-closed type solid state relay |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011104314911A CN102594322A (en) | 2011-12-20 | 2011-12-20 | Passive normally-closed type solid state relay |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102594322A true CN102594322A (en) | 2012-07-18 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011104314911A Pending CN102594322A (en) | 2011-12-20 | 2011-12-20 | Passive normally-closed type solid state relay |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102594322A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104270131A (en) * | 2014-10-10 | 2015-01-07 | 厦门金欣荣电子科技有限公司 | Solid-state relay circuit |
| CN114442519A (en) * | 2021-12-20 | 2022-05-06 | 南京铁道职业技术学院 | Rail vehicle sliding fault simulation system |
-
2011
- 2011-12-20 CN CN2011104314911A patent/CN102594322A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104270131A (en) * | 2014-10-10 | 2015-01-07 | 厦门金欣荣电子科技有限公司 | Solid-state relay circuit |
| CN104270131B (en) * | 2014-10-10 | 2017-06-16 | 厦门金欣荣电子科技有限公司 | A kind of solid-state relay circuit |
| CN114442519A (en) * | 2021-12-20 | 2022-05-06 | 南京铁道职业技术学院 | Rail vehicle sliding fault simulation system |
| CN114442519B (en) * | 2021-12-20 | 2023-09-22 | 南京铁道职业技术学院 | Rail vehicle slides trouble analog system |
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Legal Events
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| C06 | Publication | ||
| PB01 | Publication | ||
| C05 | Deemed withdrawal (patent law before 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20120718 |