CN101465638A - Low power consumption solid relay - Google Patents
Low power consumption solid relay Download PDFInfo
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- CN101465638A CN101465638A CNA2008102419739A CN200810241973A CN101465638A CN 101465638 A CN101465638 A CN 101465638A CN A2008102419739 A CNA2008102419739 A CN A2008102419739A CN 200810241973 A CN200810241973 A CN 200810241973A CN 101465638 A CN101465638 A CN 101465638A
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- storage capacitor
- power consumption
- triode
- low power
- relay
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Abstract
The invention discloses a low power-consumption solid relay which comprises a switching circuit, control pins A, J, controlled pins G, H, a storage capacitor connected with the switching circuit, a first charging circuit, a second charging circuit and a discharge circuit which are respectively connected with the storage capacitor; when high level is inputted to pin A, the storage capacitor is charged fully by the first charging circuit in the rising edge appearing moment, the switching circuit is turned on, and the controlled pins G and H are turned on, so the relay is turned on; when low level is inputted to the control pin A, the electric quantity of the capacitor is discharged completely by the discharge circuit in the falling edge appearing moment, the controlled G and H are turned off, so the solid relay is turned off. The solid relay only generates certain power consumption when control level changes, and is zero power consumption in other time, so the average power is very low.
Description
[technical field]
The present invention relates to the electric appliance and electronic technical field, particularly a kind of low power consumption solid relay.
[background technology]
Solid state relay is a kind of contactless break-make electronic switch, is four end active devices.Wherein two terminals are the input control end, and two other terminal is output-controlled end.Add direct current or pulse signal at input, output just can be transformed into conducting state (being blocking state during no signal) from off state, promptly when applying voltage between the control pin, the solid state relay conducting, solid state relay turn-offs when voltage between the control pin is cancelled then, thereby control is than heavy load.The contactless switch element that consists of owing to solid state relay, so compare with electromagnetic relay have reliable operation, the life-span is long, disturb to external world little, can be with the logical circuit compatibility, antijamming capability is strong, switching speed is fast and easy to use, thereby have very wide application.Chinese patent discloses a kind of solid state relay No. 200520084249.1, its principle is identical with conventional relay, yet these solid state relays all have a defective, be control pin when being continuously applied voltage this control pin continue to absorb power consumption about about 0.1W, the consumed power height, and in some has the circuit of low-power consumption requirement, use and be greatly limited.
[summary of the invention]
For addressing the above problem, main purpose of the present invention is the low power consumption solid relay that provides a kind of consumed power little to make the electric current that flows into control pin only change moment greatly at level, other the time electric current be zero, to reduce the average power of solid state relay.
For achieving the above object, technical scheme of the present invention is:
A kind of low power consumption solid relay, first, second charging circuit and the discharge circuit that include switching circuit, control pin A, J and controlled pin G, H, the storage capacitor that is connected with switching circuit and be connected to storage capacitor respectively; When control pin A input high level, moment appears in rising edge, and first charging circuit is full of electricity to storage capacitor, the switching circuit conducting, and conducting between then controlled pin G, the H makes this relay conducting; And when control pin A input low level, moment appears in trailing edge, and discharge circuit has been put the electric weight on the storage capacitor, turn-off between controlled pin G, the H, thereby solid state relay turn-offs.
Compared to prior art, low power consumption solid relay control level of the present invention changes from low to high, charge to storage capacitor by coupling capacitance, optocoupler, make the storage capacitor positive pole keep high level for a long time, thereby keep the solid state relay conducting, the controlled AC electricity is the storage capacitor charging during conducting, by charging, to keep the logic level of storage capacitor positive pole.And control level changes from high to low, discharges to storage capacitor by coupling capacitance, optocoupler, makes just very low level of storage capacitor, turn-offs thereby keep solid state relay.Having realized that relay only produces certain power consumption when control level changes, be zero-power At All Other Times, so average power is extremely low.
[description of drawings]
Fig. 1 is the theory diagram of low power consumption solid relay of the present invention.
Fig. 2 is the circuit theory diagrams of low power consumption solid relay of the present invention.
[embodiment]
See also shown in Figure 1, a kind of low power consumption solid relay of the present invention, first, second charging circuit and the discharge circuit that include switching circuit, the storage capacitor that is connected with switching circuit and be connected to storage capacitor respectively.Wherein, A, J pin are control pin, and G, H pin are controlled pin, connect alternating current, controlled break-make whether between the two.Storage capacitor is filled with electricity, switching circuit conducting, then conducting between G, the H pin; If the storage capacitor electric charge has been put, then turn-off between G, the H pin.When A pin input high level, moment appears in rising edge, and first charging circuit is full of electricity to storage capacitor, makes this solid state relay conducting; When A pin input low level, moment appears in trailing edge, and discharge circuit is intact the tele-release on the storage capacitor, and solid state relay turn-offs.Storage capacitor only can be preserved the time in a week charging and discharging electric charge under the situation that circuit is failure to actuate.Second charging circuit only replenishes electric charge to this electric capacity when storage capacitor has electricity (being the solid state relay conducting); Storage capacitor does not have electric charge (being that solid state relay turn-offs) then will not charge.The rechargeable energy of described second charging circuit derives from the controlled AC electricity of G, H pin, and its effect is the logic level that keeps the storage capacitor positive pole.
See also shown in Figure 2, but switching circuit includes the first field effect transistor Q1 that is connected with storage capacitor C1, the 3rd triode Q3, the thyristor Q4 that is connected with triode Q3, the bridge rectifier that is connected with this field effect transistor Q1 by one second resistance R 2 and the keyholed back plate Q5 that is connected with this bridge rectifier.Wherein, the collector electrode of the 3rd triode Q3 connects the control utmost point of thyristor Q4, and the control utmost point of thyristor Q4 is also by the 9th resistance R 9 and the negative electrode of thyristor Q4, the emitter common ground of the 3rd triode Q3; The collector electrode of the 3rd triode Q3 is connected to bridge rectifier jointly by the anode of one the 4th resistance R 4 and thyristor Q4.
First charging circuit includes the first optocoupler M1 and the first diode D1.This optocoupler connects storage capacitor C1 by the first diode D1.Second charging circuit includes the 6th triode Q6 and is connected in the base stage of this triode and the 7th field effect transistor Q7 between the collector electrode, and the 6th triode Q6 is the positive-negative-positive triode, and its collector electrode is connected to storage capacitor C1 by the 3rd diode D3.And discharge circuit includes the second optocoupler M2 and the second field effect transistor Q2.The described second field effect transistor Q2 is connected to storage capacitor C1 by first resistance R 1.Described control pin A is connected to first optocoupler M1 of first charging circuit and the second optocoupler M2 of discharge circuit respectively by the 8th resistance R 8, coupling capacitance C2.
First, second optocoupler M1, M2 are the photocell optocoupler, and inside includes LED light-emitting component and photocell photo detector.Luminous as LED, then photocell produces electric energy and exports high level, otherwise and LED is not luminous, output low level then.From control pin A input high level, level moment from low to high, level is through coupling capacitance C2 coupling, and the LED of the first optocoupler M1 inside is luminous, and storage capacitor C2 begins charging, and then LED is not luminous to be full of electricity.Be subjected to light and export high level at the luminous time period photocell of charging, charge F point high level by the first diode D1 to storage capacitor C1.The time period of coupling capacitance C2 charging does not work owing to LED in the second optocoupler M2 bears back-pressure, corresponding light battery output low level, and the second triode Q2 ends, and storage capacitor C1 is not discharged.If do not discharge and recharge to storage capacitor C1, the F point can be kept the high level of week age.A becomes low level when control pin, level is by high step-down moment, the inner LED negative electrode of the second optocoupler M2 obtains negative pressure and luminous, coupling capacitance C2 discharge this moment, put electricity back LED and do not worked, be subjected to light and export high level, the second field effect transistor Q2 drain-to-source conducting at the time period photocell that discharges, electric charge on the storage capacitor C1 has been put by first resistance R 1, and the F point is a low level.LED in the time period first optocoupler M1 of coupling capacitance C2 discharge bears back-pressure and does not work, and corresponding interior lights battery does not charge to storage capacitor C1.
F point high level, the first field effect transistor Q1 conducting, the 3rd triode Q3 end, and the voltage of ordering with respect to D when the B point rises to above U
TThe time, the thyristor Q4 control utmost point makes thyristor Q4 conducting through the level of the 4th resistance R 4, the 9th resistance R 9 dividing potential drops, alternating current through the 5th resistance R 5, bridge rectifier, thyristor Q4, be back to bridge rectifier to the six resistance R 6; Perhaps through the 6th resistance R 6, bridge rectifier, thyristor Q4, return bridge rectifier to the five resistance R 5.Diode D2, the pressure drop on the thyristor Q4 of bridge rectifier are little, the voltage of the control valve Q5 control utmost point can be considered the 5th resistance R 5 dividing potential drop gained of connecting with the 6th resistance R 6, thereby make the control valve Q5 control utmost point obtain trigger impulse, control valve Q5 conducting, conducting between just controlled pin G, the H.And when F point low level, the first field effect transistor Q1 ends, the 3rd triode Q3 saturation conduction, and the thyristor Q4 control utmost point is low level all the time, and thyristor Q4 turn-offs, and the control valve Q5 control utmost point does not have the conducting pulse, and control valve Q5 ends, thereby turn-offs between control pin G, the H point.
F point high level during the relay conducting, the 7th field effect transistor Q7 conducting, thereby the 6th triode Q6 conducting, the pulse that B is ordered is charged to storage capacitor C1 through the 6th triode Q6, the 8th diode D8, if charging and discharging circuit all is failure to actuate, then storage capacitor C1 only keeps the time in a week, keeps F point high level.Because F point low level, the 7th field effect transistor Q7 ends under the situation that this solid state relay turn-offs, thereby the 6th triode Q6 ends, and the B point can not charge to storage capacitor C1, does not change the F level point.
Low power consumption solid relay of the present invention is no more than a week as long as application process continues ON time, and perhaps conducting surpasses a week but controlled pin G, the zero load of H point are no more than a week, then input high level solid state relay conducting, and low level is ended.Because coupling capacitance C2 plays a part stopping direct current, so this creation low power consumption solid relay only at control level variation moment (promptly uprising by high step-down or by low) electric current greatly, and electric current is 0 At All Other Times, so the average power that consumes is minimum.
Low power consumption solid relay control level of the present invention changes from low to high, charge to storage capacitor by coupling capacitance, optocoupler, make the storage capacitor positive pole keep high level for a long time, thereby keep the solid state relay conducting, the controlled AC electricity is the storage capacitor charging during conducting, by charging, to keep the logic level of storage capacitor positive pole.And control level changes from high to low, discharges to storage capacitor by coupling capacitance, optocoupler, makes just very low level of storage capacitor, turn-offs thereby keep solid state relay.Having realized that relay only produces certain power consumption when control level changes, be zero-power At All Other Times, so average power is extremely low.
Most preferred embodiment described above only is that the present invention is set forth and illustrates, but is not limited to disclosed any concrete form, and it is possible carrying out many modifications and variations.
Claims (9)
1. low power consumption solid relay, include switching circuit, control pin A, J and controlled pin G, H, it is characterized in that: first, second charging circuit and the discharge circuit that also include the storage capacitor that is connected with switching circuit and be connected to storage capacitor respectively; When control pin A input high level, moment appears in rising edge, and first charging circuit is full of electricity to storage capacitor, the switching circuit conducting, and conducting between then controlled pin G, the H makes this relay conducting; And when control pin A input low level, moment appears in trailing edge, and discharge circuit has been put the electric weight on the storage capacitor, turn-off between controlled pin G, the H, thereby solid state relay turn-offs.
2. low power consumption solid relay as claimed in claim 1 is characterized in that: described storage capacitor only can be preserved the time in a week charging and discharging electric charge under the situation that circuit is failure to actuate; When storage capacitor had electricity, second charging circuit replenished electric charge by the controlled AC electricity that derives from controlled pin G, H to this electric capacity, then will not charge when storage capacitor has electric charge.
3. low power consumption solid relay as claimed in claim 2 is characterized in that: the 3rd triode (Q3) that described switching circuit includes first field effect transistor (Q1) that is connected with storage capacitor (C1), be connected with this field effect transistor (Q1) by one second resistance (R2), the thyristor (Q4) that is connected with triode (Q3) but, bridge rectifier and the keyholed back plate (Q5) that is connected with this bridge rectifier.
4. low power consumption solid relay as claimed in claim 3, it is characterized in that: the collector electrode of described the 3rd triode (Q3) connects the control utmost point of thyristor (Q4), and the control utmost point of thyristor (Q4) is also by the 9th resistance (R9) and the negative electrode of thyristor (Q4), the emitter common ground of the 3rd triode (Q3); The collector electrode of the 3rd triode (Q3) is connected to bridge rectifier jointly by the anode of one the 4th resistance (R4) and thyristor (Q4).
5. low power consumption solid relay as claimed in claim 4 is characterized in that: described first charging circuit includes first optocoupler (M1) and first diode (D1), and this optocoupler connects storage capacitor (C1) by first diode (D1).
6. low power consumption solid relay as claimed in claim 5, it is characterized in that: described second charging circuit includes the 6th triode (Q6) and is connected in the base stage of this triode (Q6) and the 7th field effect transistor (Q7) between the collector electrode, the 6th triode (Q6) is the positive-negative-positive triode, and its collector electrode is connected to storage capacitor (C1) by the 3rd diode (D3).
7. low power consumption solid relay as claimed in claim 6 is characterized in that: described discharge circuit includes second optocoupler (M2) and second field effect transistor (Q2); Described second field effect transistor (Q2) is connected to storage capacitor (C1) by first resistance (R1).
8. low power consumption solid relay as claimed in claim 7 is characterized in that: described control pin A is connected to first optocoupler (M1) of first charging circuit and second optocoupler (M2) of discharge circuit respectively by the 8th resistance (R8), coupling capacitance (C2).
9. low power consumption solid relay as claimed in claim 8 is characterized in that: described first, second optocoupler (M1), (M2) are the photocell optocoupler, and inside includes LED light-emitting component and photocell photo detector; Luminous as LED, then photocell produces electric energy and exports high level, otherwise and LED is not luminous, output low level then.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008102419739A CN101465638B (en) | 2008-12-31 | 2008-12-31 | Low power consumption solid relay |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008102419739A CN101465638B (en) | 2008-12-31 | 2008-12-31 | Low power consumption solid relay |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101465638A true CN101465638A (en) | 2009-06-24 |
| CN101465638B CN101465638B (en) | 2011-08-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008102419739A Expired - Fee Related CN101465638B (en) | 2008-12-31 | 2008-12-31 | Low power consumption solid relay |
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| CN (1) | CN101465638B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104218932A (en) * | 2014-08-14 | 2014-12-17 | 河南开启电力实业有限公司 | Simple solid state relay |
| CN104242883B (en) * | 2014-10-10 | 2017-03-15 | 厦门金欣荣电子科技有限公司 | A kind of controlled type solid-state relay |
| US11387827B2 (en) | 2015-05-07 | 2022-07-12 | Qm Power, Inc. | High speed switching solid state relay circuit |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5557440A (en) * | 1994-01-05 | 1996-09-17 | Microsoft Corporation | Noise-insensitive optoencoding techniques with compensation for device variations |
| CN2200256Y (en) * | 1994-03-15 | 1995-06-07 | 王伟民 | Optical feedback type infrared photoelectric switch |
-
2008
- 2008-12-31 CN CN2008102419739A patent/CN101465638B/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104218932A (en) * | 2014-08-14 | 2014-12-17 | 河南开启电力实业有限公司 | Simple solid state relay |
| CN104242883B (en) * | 2014-10-10 | 2017-03-15 | 厦门金欣荣电子科技有限公司 | A kind of controlled type solid-state relay |
| US11387827B2 (en) | 2015-05-07 | 2022-07-12 | Qm Power, Inc. | High speed switching solid state relay circuit |
| US11683034B2 (en) | 2015-05-07 | 2023-06-20 | Qm Power, Inc. | High speed switching solid state relay circuit |
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| Publication number | Publication date |
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| CN101465638B (en) | 2011-08-17 |
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Granted publication date: 20110817 Termination date: 20171231 |
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