CN103092089A - Zero potential on-off control system - Google Patents
Zero potential on-off control system Download PDFInfo
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- CN103092089A CN103092089A CN 201110345867 CN201110345867A CN103092089A CN 103092089 A CN103092089 A CN 103092089A CN 201110345867 CN201110345867 CN 201110345867 CN 201110345867 A CN201110345867 A CN 201110345867A CN 103092089 A CN103092089 A CN 103092089A
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- signal
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- zero potential
- contactors
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Abstract
The invention provides a control method of zero potential control technologies for alternating current (A.C.) contactors, relays and silicon controlled rectifiers (SCRs), and belongs to the field of power supply control. The aero potential on-off control system comprises an A.C. signal zero cross detection circuit, a synchronizing signal retaining circuit, a drive signal circuit and a direct current power (D.C.) supply circuit. An output end of the A.C. signal zero cross detection circuit is connected to an input end of the synchronizing signal retaining circuit, an output end of the synchronizing signal retaining circuit is connected to an input end of the drive signal circuit, and the D.C. power supply unit circuit is connected to the output end of the synchronizing signal retaining circuit and an output end of the drive signal circuit, and then connected with a relay or a silicon controlled rectifier. The zero potential start and stop of the relays, the A.C. contactors and the SCRs can be achieved. The phenomena that electric arcs burn out contactors of the relays and the A.C. contactors and the SCRs are damaged by impact of transient surge current are avoided. The zero potential no-off control system has the advantage that the matching synchronization maintaining between an A.C. frequency zero signal and a D.C. switch drive signal is adopted.
Description
One, technical field
The present invention is a kind of control mode that the zero potential of a kind of A.C. contactor, relay and contactless thyristor type is controlled, and belongs to power supply control technology field, and the on/off that refers in particular in alternating circuit is controlled.
Two, background technology
The contactless thyristor type of contact relay formula that traditional AC power gauge tap mode adopts.Relay system has low price, and technology is simple, and is easy to use, but can produce the phenomenon that the electric arc blast appears drawing in electric spark.
Solve at present relay fully and make its contact the electric arc explosion phenomenon not occur as the break-make of alternating-current switch, there is no a kind of advanced person method both at home and abroad.Directly provide fixed voltage to relay coil for what still adopt on the mode of pilot relay break-make both at home and abroad with regard to present, impel relay coil to get the mode of electric adhesive and outage release, do not have new technical method and avoid the relay electric arc explosion phenomenon that the contact occurs when break-make.
Three, summary of the invention
The object of the present invention is to provide a kind of brand-new switch on and off mode of relay application in ac power supply circuit, guaranteed the electric arc explosion phenomenon not occur as the relay hard contact of switching device.
The invention provides a kind of zero potential on-off controlling system.If zero potential is searched the unit, be used for gathering sinusoidal zero passage periodic signal.So that AC relay can be under ac cycle be zero state, adhesive or release reach conducting or disconnection under the state that hard contact is zero potential at ac cycle, thereby avoid the contact the caused explosion phenomenon of arc through air to occur.
The present invention solves its technical matters scheme and is, a kind of zero potential on-off controlling system is characterized in that, comprises with lower unit:
1. AC signal zero crossing point detecting unit:
Be used for the cycle signal of AC power is carried out the sampling of zero crossing;
2. synchronizing signal keeps locking:
Be used for the synchronization locking of comparing of the cycle signal zero crossing of AC power and the driving signal that drives signal element and provide;
3. dc power supply unit:
Be used for providing the operating voltage of synchronized signal and driver element;
4. driving signal element:
Be used for offering pull-in winding or the silicon controlled driving signal of relay.
Advantage of the present invention is, adopted interchange cycle zero-signal and dc switch to drive the signal fusing synchronization, and the method for its invention is simple, need not debugging, makes simple.
Description of drawings:
Be described in further detail below in conjunction with the embodiment of accompanying drawing to invention.
Fig. 1 is principle compositional block diagram of the present invention.
Fig. 2 is AC signal zero crossing detecting unit figure of the present invention
Fig. 3 is synchronizing signal lock cell figure of the present invention
Fig. 4 is comparison of wave shape schematic diagram of the present invention
Embodiment
Below in conjunction with embodiment and accompanying drawing thereof, the present invention is described
As shown in Figure 1: zero potential break-make system, comprise that alternating current zero crossing detects 1, trigger pip locking 2, synchronizing signal keeps 3, and switching signal 4 drives signal element 5 and couples together, and forms zero potential break-make system.
As shown in Figure 2: in described AC signal zero crossing detection cell circuit, alternating voltage AC is after full-bridge DQ1 rectification, by resistance R 2, the alternating current zero crossing signal is taken out to triode Q1, makes the signal of synchronizeing with zero potential of a positive voltage of triode Q1 formation, to rear class trigger pip lock cell.
As shown in Figure 3: switching signal S1 (being produced by the switching signal 4 in Fig. 1) reaches signal with zero cross signal S2 (being produced by the circuit in Fig. 2) and synchronizes 1, synchronizing signal 1 reaches signal fusing locking 2, signal fusing locking 2 is with the locking of comparing of zero cross signal S2 and synchronized switching signal, when meeting the zero-bit requirement, the near rear class of this locking signal drives adhesive or the disconnection of relay.
As shown in Figure 4: the AC signal ripple was when occurring at 0, and zero potential detects ripple and detects zero cross signal, t
1-0, t
2-0, t
3-0, t
4-0, t
5-0, as switch triggering signal t
1, t
2, t
3, t
4, t
5During appearance, can carry out signal fusing with signal synchronization unit, locking signal output waveform t appears in locking at last
1-1, t
2-1, t
3-1, t
4-1, t
5-1
Can be found out the feasibility of the utilization of zero cross signal in zero potential break-make system by the above.
Claims (2)
1. a kind of control mode of the zero potential of an A.C. contactor, relay and contactless thyristor type control, comprising: alternating current zero crossing detection 1, trigger pip locking 2, synchronizing signal maintenance 3, switching signal 4, driving signal element 5.The locking synchronizing comparison that it is characterized in that alternating current zero crossing signal and trigger pip keeps, this system is when work, after the alternating current zero crossing signal is sampled taking-up, together carrying out signal through circuit with switching signal synchronizes, and then after further carrying out signal fusing locking by circuit, complete control to relay by driving circuit.
2. a kind of zero potential control system of stating of newspaper according to claim 1 is characterized in that alternating current zero crossing detects 1, trigger pip locking 2, synchronizing signal keep 3, switching signal 4, drive the common integrated circuit that forms of signal element 5 and reach the purpose that zero potential is controlled.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110345867 CN103092089A (en) | 2011-10-31 | 2011-10-31 | Zero potential on-off control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110345867 CN103092089A (en) | 2011-10-31 | 2011-10-31 | Zero potential on-off control system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103092089A true CN103092089A (en) | 2013-05-08 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110345867 Pending CN103092089A (en) | 2011-10-31 | 2011-10-31 | Zero potential on-off control system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103092089A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104425184A (en) * | 2013-08-23 | 2015-03-18 | 海尔集团公司 | Control device for switching on and switching off relay and air conditioner |
| CN106940400A (en) * | 2017-05-05 | 2017-07-11 | 深圳市诺尔安磁检测科技有限公司 | Phase angle on-off controller and its application method |
-
2011
- 2011-10-31 CN CN 201110345867 patent/CN103092089A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104425184A (en) * | 2013-08-23 | 2015-03-18 | 海尔集团公司 | Control device for switching on and switching off relay and air conditioner |
| CN106940400A (en) * | 2017-05-05 | 2017-07-11 | 深圳市诺尔安磁检测科技有限公司 | Phase angle on-off controller and its application method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130508 |