CN104167720A - Power-saving controller for automatically detecting states of power device and supply network and delaying outage - Google Patents

Power-saving controller for automatically detecting states of power device and supply network and delaying outage Download PDF

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Publication number
CN104167720A
CN104167720A CN201410394912.1A CN201410394912A CN104167720A CN 104167720 A CN104167720 A CN 104167720A CN 201410394912 A CN201410394912 A CN 201410394912A CN 104167720 A CN104167720 A CN 104167720A
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China
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power
circuit
electricity
saving controller
power supply
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CN104167720B (en
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李波
彭志凌
张亚
张宏翔
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TAIYUAN WEIRUILEI TECHNOLOGY Co Ltd
North University of China
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TAIYUAN WEIRUILEI TECHNOLOGY Co Ltd
North University of China
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Abstract

The invention discloses a power-saving controller for delaying outage. The power-saving controller is capable of automatically detecting shutdown or abnormal power-off signals of a power device with high power and enables the power device to be disconnected with a supply network in the set time, and the requirement of users for using a power device with small power in a short time can be met while the power is saved and used safely. After being triggered, at first, the power-saving controller connects the supply network with the power device, and meanwhile, an outage delay progress in the power-saving controller starts working; the outage delay progress is used for timing, and in the timing process, if the power of a supply line is smaller than a preset threshold value all the time, the power device and the supply network are disconnected when the delay time t is reached; if the power is larger than the threshold value, the outage delay progress is automatically stopped; hereafter, the power of the supply line continues to be detected, and once the power is smaller than the threshold, the outage delay progress is restarted again.

Description

Automatically detect power device and electric network state electricity-saving controller that can delay cut-off
Technical field
The present invention relates to safety utilization of electric power, energy-conserving and environment-protective field, be specifically related to a kind of automatic detection power device and electric network state electricity-saving controller that can time delay auto-breaking.
Background technology
If the power devices such as TV, computer, audio amplifier, printer, game machine are not cut off the electricity supply when not working, power device is throughout the year in holding state.The equipment such as LCD TV, game machine, computer, printer, audio amplifier consumed power when standby between 1W~7W, as surprising in the electric energy consuming in holding state throughout the year.And, although some power consumption equipment powered-down, but its internal circuit is not all isolated with electrical network, if keeped in repair in the situation that not pulling out plug, can there is Danger Electric shock risk, in addition, some electronic components work long hours and understand accelerated ageing, thereby damage the security incidents such as initiation fire even suddenly.
Some low power power devices (as electric iron, charger) do not use and charged after long-time energising there is very large potential safety hazard.For example, the power that charger consumes when giving battery (as battery of mobile phone) quick charge is within 7W, but charging can complete at 2~3 hours, if charged rear not power-off for a long time, can cause damage or bring the potential safety hazards such as battery explosion rechargeable battery.The electric iron power that soldered circuit board is used is at 16W~50W, and approximately 250 ℃ of solder horn temperature, switch on and work, and people have usually forgotten to pull up plug after using, and bring very large potential safety hazard.
The area often having a power failure at some, after having a power failure, electrical appliance does not close power source, once incoming call, the work of just switching on voluntarily, causes that electric energy wastes, shortened equipment life, even can cause the major accidents such as electric shock, fire.
Summary of the invention
In view of this, the invention provides a kind of automatic detection power device and electric network state electricity-saving controller that can time delay auto-breaking, power device shutdown, standby or abnormal power cut signal can automatically be detected, make power device through the automatic disconnection of time of setting and being connected of supply network, thereby the electric energy of avoiding occurring wastes, shortened equipment life, even cause the problem of the major accidents such as electric shock, fire.
This electricity-saving controller can be placed in 220V AC power transducer or power device is inner, also can become the self-contained unit that connects supply network.
This automatically detects power device and electric network state electricity-saving controller that can delay cut-off, is arranged in the supply line of power device; After electricity-saving controller is triggered, first electricity-saving controller connects being connected between electrical network and power device, and the delay cut-off process of electricity-saving controller inside is started working simultaneously; Delay cut-off process is used for carrying out time delay timing, in timing course, the power of electricity-saving controller real time automatic detection supply line, if there is power, be more than or equal to the situation of pre-set threshold value, determine that power device enters normal operating conditions, delay cut-off process stops automatically, keeps being connected between electrical network and power device; If described power is less than pre-set threshold value always, when delay time t arrives, cut off being connected between power device and electrical network; After delay cut-off process stops automatically, electricity-saving controller continue to detect the power of supply line, when emergent power is less than the situation of pre-set threshold value, restarts delay cut-off process.
Preferably, described electricity-saving controller comprises gate-controlled switch, power supply circuits, power-sensing circuit, timing circuit, ON-OFF control circuit and double-pole switch S; Double-pole switch S comprises that S-1 terminal is identical with the on off state of S-2 terminal;
At electrical network, in the supply line of power device, access the gate-controlled switch of initial condition for disconnecting, the two ends S-1 terminal in parallel of gate-controlled switch;
Power supply circuits, for the electric energy producing is sent to power-sensing circuit, ON-OFF control circuit and timing circuit, access S-2 terminal in the supply line between power supply circuits and timing circuit;
Power-sensing circuit, the power for detection of electrical network to the supply line of power consumption equipment power supply, if power is more than or equal to pre-set threshold value, it is the storage capacitor energy storage in timing circuit that Ze Cong supply line extracts electric power, otherwise, energy storage energy is not provided;
Timing circuit, for when power supply circuits or power-sensing circuit provide electric energy, storing electrical energy; Adopt power supply electric energy or storage capacitor to provide break-make to control voltage to ON-OFF control circuit; When power supply circuits and power-sensing circuit do not provide electric energy, the storing electrical energy of storage capacitor is consumed in the delay time t setting;
ON-OFF control circuit, for only when the power supply of power supply circuits and the break-make of timing circuit are controlled voltage and are existed simultaneously, control described gate-controlled switch and connect, any one does not provide the power supply of power supply circuits and the break-make of timing circuit control voltage, controls described gate-controlled switch and disconnects.
Preferably, the described power supply circuits further supply line between gate-controlled switch and power device obtain power supply, and are converted to direct voltage, offer power-sensing circuit, ON-OFF control circuit and timing circuit.
Preferably, described power supply circuits are current rectifying and wave filtering circuit, comprise power transformer T1, the first bridge rectifier, voltage stabilizing didoe VD9 and filter capacitor C1;
The input of power transformer T1 is connected to electrical network, and the output of power transformer T1 connects the input of bridge rectifier, forms step-down, rectification circuit; The output of bridge rectifier and filter capacitor C1, the filtering of voltage stabilizing didoe VD2 formation in parallel, voltage stabilizing circuit; Thereby the Va of the low-voltage DC after step-down, rectifying and wave-filtering, voltage stabilizing is provided, as the electric energy producing, to power-sensing circuit, ON-OFF control circuit and timing circuit, sends.
Preferably, described timing circuit comprises storage capacitor C2 in parallel and bleeder resistor R1; The anode of storage capacitor C2 is as charge-discharge end, accepts the electric energy that power supply circuits, power-sensing circuit provide, and provides break-make to control voltage to ON-OFF control circuit simultaneously.
Preferably, described bleeder resistor R1 is rheostat, for regulating the length of described delay time t.
Preferably, described power-sensing circuit comprises current transformer T2, the second bridge rectifier, filter capacitor C3, the circuit of scale operation in the same way consisting of operational amplifier A and external balance resistance R3 thereof, resistance R 4, feedback resistance R5, plays the light-emitting diode VD12 of on-off action; Operational amplifier A provides electric energy by power supply circuits, forms single power supply;
Current transformer T2 access electrical network live wire, access point is between gate-controlled switch and power device, and the current signal of current transformer T2 induction is undertaken by filter capacitor C3, carrying out filtering after rectification by the second bridge rectifier; The anode of filter capacitor C3 is connected with the positive input terminal of operational amplifier A through balance resistance R3, the minus earth of filter capacitor C3 is connected with the negative input end of operational amplifier A by resistance R 4, and feedback resistance R5 is in parallel with negative input end and the output of operational amplifier A; The anode of the output sending and receiving optical diode VD12 of operational amplifier A, the negative electrode of light-emitting diode VD12 provides electric energy for timing circuit.
Preferably, described feedback resistance R5 is rheostat, for regulating described pre-set threshold value.
Preferably, described ON-OFF control circuit comprises triode V1, triode V2, base resistance R2, collector electrode fly-wheel diode VD11 and AC relay K;
The break-make that one end of base resistance R2 provides as reception timing circuit is controlled one end of voltage, the other end connecting triode V1 base stage of base resistance R2, the emitter of triode V1 is directly coupled to the base stage of triode V2, the grounded emitter of triode V2, after the coils from parallel connection of coils of fly-wheel diode VD11 and AC relay K, the collector electrode of one end connecting triode V1, V2, the other end is drawn as accepting feeder ear, connects the feeder ear of power supply circuits;
Meanwhile, the switch contact K-1 of AC relay K is as described gate-controlled switch.
Preferably, described acceptance further connected and is used to indicate the light-emitting diode VD10 whether electricity-saving controller works on feeder ear.
Beneficial effect:
(1) whether power device closes and whether electrical network has a power failure, all can be reflected on power, therefore can design the power that a kind of electricity-saving controller detects power device automatically, when dropping to a certain threshold values, power device power thinks that user has shut down or electric network fault, start delayed-breaking-off function, the time that process is set is cut off the supply of 220V alternating current.If electricity-saving controller connects small-power power device such as charger, electric iron etc., its operating power starts valve value rate lower than delay cut-off, start after electricity-saving controller, also started its delayed-breaking-off function, user can normally use the quick charge of small-power power device or complete battery pair before electricity-saving controller disconnects 220V ac circuit simultaneously.When having guaranteed electrical energy saving, safety utilization of electric power, also met the demand of using small-power power device in user's short time.
(2) supply line of power supply circuits between double-pole switch S and power device obtains power supply.Like this, after double-pole switch disconnects, power supply circuits have also disconnected the charging process to storage capacitor C2 immediately, guarantee to proceed at once delay cut-off process.Wherein, can adopt transformer coupled step-down power supply, adopt current transformer to detect power device power consumption, isolate with Alternating Current Power Supply network security.
(3) the electricity-saving controller simple circuit that the embodiment of the present invention provides, effective.Delay cut-off starts threshold values T, delay time t and all can arrange voluntarily, thereby has guaranteed being suitable for different power devices.
Power device inside or power supply changeover device that the present invention can be used in family, office, factory building are inner, also can be made into independent control and be connected in supply network, play economize on electricity and safe effect, and market prospects are huge.
Accompanying drawing explanation
Fig. 1 is electricity-saving controller workflow of the present invention.
Fig. 2 is the theory diagram of electricity-saving controller of the present invention.
Fig. 3 and Fig. 4 are a kind of concrete implementing circuit figure of electricity-saving controller of the present invention.
Embodiment
Below in conjunction with the accompanying drawing embodiment that develops simultaneously, the present invention is described in detail.
The invention provides a kind of automatic detection power device and electric network state electricity-saving controller that can delay cut-off, be arranged in the supply line of power device, for controlling electrical network, whether access power device.As shown in Figure 1, after pressing the push-button switch of electricity-saving controller, electricity-saving controller is triggered, and first it connect being connected between electrical network and power device, and electricity-saving controller and power device are all worked on power.The delay cut-off process of electricity-saving controller inside is started working simultaneously.Delay cut-off process is used for carrying out time delay timing, in timing course, the power of electricity-saving controller real time automatic detection supply line, whether power can embody power consumption equipment working properly, or whether electrical network powers normally, if all are normal, the power on electrical network will reach a certain height, if too small, think and have undesired factor to exist.Therefore, electricity-saving controller judges whether power is more than or equal to pre-set threshold value, once there is this situation, determine that power device enters normal operating conditions, delay cut-off process stops automatically, and keeps being connected between electrical network and power device, to continue to maintain the normal operating conditions of power device.If in timing time, the power on electrical network is less than pre-set threshold value always, when delay time arrives, cuts off being connected between power device and electrical network.
After delay cut-off process stops automatically, electricity-saving controller continue to detect the power of supply line, when emergent power is less than the situation of pre-set threshold value, restarts delay cut-off process.
When using low power electric appliance or charging to rechargeable battery: after pressing controller switches, delay cut-off process is started working, the energising of small-power power device, timing arrives, automatically cut off the connection between power device and electrical network, as wanted, extend timing, can timing to before press again switch, delay cut-off process reclocking work.
While using high-power power device: when pressing controller switches, delay cut-off process is started working, high-power power device energising; After this, if power device always in standby or off-mode, timing arrives, and just automatically cuts off the connection between power device and electrical network.If timing does not arrive, when power device enters operating state, delay cut-off process can stop automatically, when power device is entered holding state again or has a power failure suddenly by operating state after, delay cut-off process reopens, and timing arrives, and cuts off the connection between power consumption equipment and electrical network.
Visible, the present invention can solve the variety of issue relating in background technology.
In order to realize above-mentioned electricity-saving controller, Fig. 2 has provided a kind of implementation of electricity-saving controller, and as shown in Figure 2, this electricity-saving controller comprises gate-controlled switch, power supply circuits, power-sensing circuit, timing circuit, ON-OFF control circuit and double-pole switch S.Double-pole switch S comprises two terminals of interlock: S-1 terminal and S-2 terminal, the on off state of these two terminals is identical.
At electrical network, in the supply line of power device, access the gate-controlled switch of initial condition for disconnecting, the S-1 terminal of the two ends double-pole switch S in parallel of gate-controlled switch.
Power supply circuits, for the electric energy of generation is provided to power-sensing circuit, ON-OFF control circuit and timing circuit, access S-2 terminal in the supply line between power supply circuits and timing circuit.
Power-sensing circuit, the power for detection of electrical network to the supply line of power device power supply, if power is more than or equal to pre-set threshold value, it is the storage capacitor energy storage in timing circuit that Ze Cong supply line extracts electric power, otherwise, energy storage energy is not provided.
Timing circuit, for when power supply circuits or power-sensing circuit provide electric energy, storing electrical energy; Adopt power supply electric energy or the storage capacitor of self-powered circuit or power-sensing circuit to provide break-make to control voltage to ON-OFF control circuit; When power supply circuits and power-sensing circuit do not provide electric energy, the storing electrical energy of storage capacitor is consumed in the delay time t setting.These power supply circuits can be independent current source, and for example battery, also can the supply line between gate-controlled switch and power device obtain power supply, and be converted to direct voltage, offers power-sensing circuit, ON-OFF control circuit and timing circuit.When gate-controlled switch K-1 disconnects, double-pole switch S is also in normally open simultaneously, and power supply circuits are stopped power supply at once, relay K dead electricity, and its contact K-1 keeps normally open.In power device running, electrical network has a power failure suddenly, relay K dead electricity, its contact returns to normally open at once, double-pole switch S is also in normally open, once incoming call, because K-1 and S switch are all in normally open, the electric current in electrical network can not impact power device, can not make it rework yet.
ON-OFF control circuit, for only when the power supply of power supply circuits and the break-make of timing circuit are controlled voltage and are existed simultaneously, control described gate-controlled switch and connect, any one does not provide the power supply of power supply circuits and the break-make of timing circuit control voltage, controls described gate-controlled switch and disconnects.
The operation principle of electricity-saving controller shown in Fig. 2 is:
When switch S is pressed, S-1 terminal is switched on, electrical network is powered to power device, meanwhile, due to interaction relation, switch S-2 are also pressed simultaneously, and power supply circuits provide instantaneous electric energy to timing circuit, timing circuit provides break-make to control voltage to ON-OFF control circuit in storing electrical energy, after controlled loop conducting in ON-OFF control circuit, gate-controlled switch is closed, and now electrical network continues to power to power device.
When switch S is released, S-1 terminal and S-2 terminal are all cut off, and due to the storage capacitor end of having charged, therefore can adopt stored energy to continue as ON-OFF control circuit power supply, the closure state of gate-controlled switch is maintained so, and electrical network continues to power to power device.Suppose that power device is because of dormancy, failure and other reasons causes power on mains supply circuit lower than pre-set threshold value, power-sensing circuit does not charge to storage capacitor, storage capacitor has lost power supply circuits and these two supply sources of power-sensing circuit, can only lean on self energy storage to control voltage for ON-OFF control circuit provides break-make, thereby maintain the closure of gate-controlled switch, when the power consumption time of timing circuit, reach the delay time t of setting, and power-sensing circuit does not detect mains supply circuit recovery power between this, because energy storage exhausts, the power supply source of ON-OFF control circuit disappears, ON-OFF control circuit disconnects gate-controlled switch, thereby cut off being connected between electrical network and power device, realized time delay disconnection.
After switch S is released, if power device is normally worked always, or recover normal from dormancy, failure and other reasons, as long as there is normal operating conditions, power-sensing circuit can lead at once overpowering variation and this state detected, thereby for storage capacitor in timing circuit provides electric energy, make storage capacitor stored energy and provide break-make to control voltage to ON-OFF control circuit, ON-OFF control circuit is communicated with being connected between electrical network and power device.When power device is again after dormancy or fault, rely on timing circuit to provide time delay to disconnect service.
Based on above-mentioned principle, Fig. 3 and Fig. 4 have provided a kind of circuit of electricity-saving controller and have realized, and its simple circuit and effect are better.As shown in Figure 3,4, this circuit is comprised of double-pole switch S, current rectifying and wave filtering circuit (being power supply circuits), power-sensing circuit, timing circuit, ON-OFF control circuit.Wherein,
Current rectifying and wave filtering circuit comprises: the first bridge rectifier that power transformer T1, rectifier diode VD1~VD4 forms or bridge heap, voltage stabilizing didoe VD9, filter capacitor C1.
Power-sensing circuit comprises: the second bridge rectifier that current transformer T2, rectifier diode VD5~VD8 form or bridge heap, filtering capacitor C3, the circuit of scale operation in the same way consisting of operational amplifier A and outer meeting resistance R3, R4, R5, the light-emitting diode VD12 of an on-off action.Feedback resistance R5 is rheostat, for regulating described pre-set threshold value.
Timing circuit comprises: storage capacitor C2 and bleeder resistor R1.
ON-OFF control circuit comprises: the triode V1 of composite joint and V2 and external base resistance R2 thereof, collector electrode fly-wheel diode VD11, AC relay K, coil in this AC relay is arranged in ON-OFF control circuit, and its switch contact K-1 is connected to electrical network on supply line's live wire of power device power supply as described gate-controlled switch.Further this ON-OFF control circuit can also comprise circuit working indication light diode VD10.
Double-pole switch S can adopt double-pole self-resetting button switch.
The annexation of above-mentioned each electronic devices and components is as follows:
After the S-1 terminal parallel connection of the switch contact K-1 of AC relay K and double-pole self-resetting button switch S, be connected to live wire, and connect successively current transformer T2, power device, transformer T1 input; The be connected in parallel input of bridge rectifier VD1~VD4 of transformer T1 output forms step-down, rectification circuit; Bridge rectifier VD1~VD4 output and filter capacitor C1, the filtering of voltage stabilizing didoe VD2 formation in parallel, voltage stabilizing circuit, thereby the Va of the low-voltage DC after step-down, rectifying and wave-filtering, voltage stabilizing is provided, as the electric energy producing, to power-sensing circuit, ON-OFF control circuit and timing circuit, sends.
The two ends of the S-2 terminal of double-pole self-resetting button switch S connect the anode of filter capacitor C1 and storage capacitor C2; Storage capacitor C2 minus earth; After storage capacitor C2 and bleeder resistor R1 parallel connection, form RC discharge loop.The anode of storage capacitor C2 is as charge-discharge end, accepts the electric energy that power supply circuits, power-sensing circuit provide, and provides break-make to control voltage to ON-OFF control circuit simultaneously.Preferably, bleeder resistor R1 is rheostat, for regulating the length of described delay time t.
One end of base resistance R2 is as the one end that receives storage capacitor break-make that C2 provides control voltage in timing circuit, be connected with the anode of storage capacitor C2, the other end connecting triode V1 base stage of base resistance R2, the emitter of triode V1 is directly coupled to the base stage of triode V2, the grounded emitter of triode V2, triode V1, the collector electrode of V2 connects the anode of fly-wheel diode VD11, and by the negative electrode of relay K sending and receiving optical diode VD10, fly-wheel diode VD11 is connected with the negative electrode of light-emitting diode VD10, the anode of light-emitting diode VD10 is as accepting feeder ear, be connected with the anode of filter capacitor C1 (feeder ear that is connected power supply circuits), simultaneously, the switch contact K-1 of AC relay K is as described gate-controlled switch.
Current transformer T2 and the induction of second bridge rectifier VD5~VD8 input formation in parallel electric current and rectification circuit, bridge rectifier VD5~VD8 output and filter capacitor C3 formation in parallel filter circuit.Wherein current transformer T2 accesses electrical network live wire, and access point is between gate-controlled switch and power device, and the current signal of current transformer T2 induction is undertaken by filter capacitor C3, carrying out filtering after rectification by bridge rectifier VD5~VD8.The anode of filter capacitor C3 is connected with the positive input terminal of operational amplifier A through balance resistance R3, the minus earth of filter capacitor C3 is connected with the negative input end of operational amplifier A by resistance R 4, feedback resistance R5 is in parallel with negative input end and the output of operational amplifier A, operational amplifier A and its outer meeting resistance R3, R4, R5 forms scale operation circuit in the same way, the operating voltage of operational amplifier A is provided by filter capacitor C1, form single power supply circuit, the anode of the power supply positive input termination filter capacitor C1 of operational amplifier A, the negative electrode of the power-input termination filter capacitor C1 of operational amplifier A, be ground connection, the anode of the output sending and receiving optical diode VD12 of operational amplifier A, the negative electrode of light-emitting diode VD12 connects the anode of storage capacitor C2, thereby for timing circuit provides electric energy.
The operation principle of circuit shown in Fig. 3 is:
Electricity-saving controller will be started working, first need to press double-pole self-resetting button switch S (S-1, S-2 connect simultaneously), now 220V alternating current obtains low-voltage DC Va after transformer T, first bridge rectifier VD1~VD4, filter capacitor C1, voltage stabilizing didoe VD9 step-down, rectifying and wave-filtering, voltage stabilizing.When this low-voltage DC Va provides operating voltage for operational amplifier A, what at double-pole self-resetting button switch S, press is that storage capacitor C2 charges by S-2 in a flash, low-voltage DC Va also makes triode V1, V2 conducting through resistance R 2, relay K energising, its contact K-1 is converted to attracting state by the off-state before switching on.
Discharge after double-pole self-resetting button switch S (being that S-1, S-2 disconnect), storage capacitor C2 ends of charge, beginning is discharged through bleeder resistor R1, and now triode V1, V2 are still in conducting state, and contact K-1 is still in closure state.Suppose in discharge process, the abnormal work of power device, after C2 discharge off, triode V1, V2, relay K quit work, the S-1 terminal of double-pole self-resetting button switch S and the K-1 contact of relay K all disconnect, disconnected and being connected of 220V alternating current, whole circuit quits work, and stops as power device power supply.Light-emitting diode VD10, for circuit working indication, lights and represents power device energising, extinguishes and represents power device power-off.Bleeder resistor R1 is for timing length adjustment.Fly-wheel diode VD11 is for the protection to triode V1, V2.
If discharged after S, power device powers on and normally works, current transformer T2 charges induced potential through the backward filter capacitor C3 of VD5~VD8 rectification, after operational amplifier A collection amplification filtering capacitor C 3 both end voltage, through light-emitting diode VD12, to storage capacitor C2, charge, the power positive correlation of the both end voltage of filter capacitor C3 and the power device of access, operational amplifier A adopts single power supply, supply power voltage is from filter capacitor C1, filter capacitor C1 is operational amplifier A under relay contact K-1 attracting state, relay K, triode V1, V2 provides filtered direct voltage Va, filter capacitor C1 capacity is much smaller than the capacity of storage capacitor C2, when timing arrives, after the contact K-1 of relay K disconnects, filter capacitor C1 two ends instant power-down.
If discharged after S, when power device standby or while closing, its power significantly declines, the induced electromotive force that current transformer T2 senses charges to filter capacitor C3 through second bridge rectifier VD5~VD8, the voltage pole at filter capacitor C3 two ends is low or be zero, output voltage after operational amplifier A is amplified is also lower than the conduction voltage drop of light-emitting diode VD12, not conducting of light-emitting diode VD12, interrupted the charging to storage capacitor C2, storage capacitor C2 starts to discharge through bleeder resistor R1, after storage capacitor C2 discharge off, triode V1, V2 cut-off, relay K dead electricity quits work, the contact K-1 of relay K disconnects, whole circuit quits work.As wanted, extend timing, can timing to before press again double-pole self-resetting button switch S, the reclocking work of delay cut-off process.
Before electricity-saving controller is used for the first time or offers user, need determine threshold voltage for the electric energy of connected power device consumption.Concrete grammar is: first bleeder resistor R1 is turned down, to guarantee the brightness of light-emitting diode VD12, after starting working, adjusts power device feedback resistance R5, when light-emitting diode VD12 is turned to conducting and reached the brightness that naked eyes can be observed by shutoff, adjust complete, so just obtain the threshold values power consumption of monitored power device and there is certain coefficient of safety, when power device power significantly decline enter standby or off-mode after delay cut-off process just can work.After feedback resistance R5 mixes up, heighten bleeder resistor R1 to determine the delay cut-off time, the resistance of bleeder resistor R1 and the positive correlation of delay cut-off time.Light-emitting diode VD10 is controller self working station indicator, and after pressing double-pole self-resetting button switch S-1, circuit obtains electric work, light-emitting diode VD10 is luminous, when relay contact disconnects after the connection of 220V alternating current, circuit dead electricity, light-emitting diode VD10 extinguishes.VD12 mainly helps out when circuit is demarcated and debug.
In sum, these are only a certain concrete methods of realizing of automatic detection power device and electric network state electricity-saving controller that can delay cut-off, be not intended to limit protection scope of the present invention.Within the spirit and principles in the present invention all, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.For example, the bridge rectifier VD1~VD4 in controller and VD5~VD8 can be replaced by voltage doubling rectifing circuit; The current rectifying and wave filtering circuit consisting of power transformer T1, rectifier diode VD1~VD4, voltage stabilizing didoe VD9, filtering capacitor C1 can be replaced by battery or battery pack; Double-pole self-resetting button switch S can be replaced by common double knife switch, like this when switch is during in ON state, electricity-saving controller does not play a role, after switch is by ON state shift OFF state, off signal delay cutoff that electricity-saving controller starts to detect power device are connected with 220V alternating current, and this also just means the electricity-saving controller work that will allow, and the company of need double-click switch, press for the first time as ON, press for the second time as OFF.
This controller can be placed in 220V AC power transducer or power consumption equipment is inner, also can become the self-contained unit that connects supply network.

Claims (10)

1. a electricity-saving controller that can delay cut-off, is characterized in that, described electricity-saving controller is arranged in the supply line of power device; After electricity-saving controller is triggered, first electricity-saving controller connects being connected between electrical network and power device, and the delay cut-off process of electricity-saving controller inside is started working simultaneously; Delay cut-off process is used for carrying out time delay timing, in timing course, the power of electricity-saving controller real time automatic detection supply line, if there is power, be more than or equal to the situation of pre-set threshold value, determine that power device enters normal operating conditions, delay cut-off process stops automatically, keeps being connected between electrical network and power device; If described power is less than pre-set threshold value always, when delay time t arrives, cut off being connected between power device and electrical network; After delay cut-off process stops automatically, electricity-saving controller continue to detect the power of supply line, when emergent power is less than the situation of pre-set threshold value, restarts delay cut-off process.
2. electricity-saving controller according to claim 1, is characterized in that: described electricity-saving controller comprises gate-controlled switch, power supply circuits, power-sensing circuit, timing circuit, ON-OFF control circuit and double-pole switch S; The S-1 terminal that double-pole switch S comprises is identical with the on off state of S-2 terminal;
At electrical network, in the supply line of power device, access the gate-controlled switch of initial condition for disconnecting, the two ends S-1 terminal in parallel of gate-controlled switch;
Power supply circuits, for the electric energy producing is sent to power-sensing circuit, ON-OFF control circuit and timing circuit, access S-2 terminal in the supply line between power supply circuits and timing circuit;
Power-sensing circuit, the power for detection of electrical network to the supply line of power consumption equipment power supply, if power is more than or equal to pre-set threshold value, it is the storage capacitor energy storage in timing circuit that Ze Cong supply line extracts electric power, otherwise, energy storage energy is not provided;
Timing circuit, for when power supply circuits or power-sensing circuit provide electric energy, storing electrical energy; Adopt power supply electric energy or storage capacitor to provide break-make to control voltage to ON-OFF control circuit; When power supply circuits and power-sensing circuit do not provide electric energy, the storing electrical energy of storage capacitor is consumed in the delay time t setting;
ON-OFF control circuit, for only when the power supply of power supply circuits and the break-make of timing circuit are controlled voltage and are existed simultaneously, control described gate-controlled switch and connect, any one does not provide the power supply of power supply circuits and the break-make of timing circuit control voltage, controls described gate-controlled switch and disconnects.
3. electricity-saving controller as claimed in claim 2, it is characterized in that, the described power supply circuits further supply line between gate-controlled switch and power device obtain power supply, and are converted to direct voltage, offer power-sensing circuit, ON-OFF control circuit and timing circuit.
4. electricity-saving controller as claimed in claim 3, is characterized in that, described power supply circuits are current rectifying and wave filtering circuit, comprises power transformer T1, the first bridge rectifier, voltage stabilizing didoe VD9 and filter capacitor C1;
The input of power transformer T1 is connected to electrical network, and the output of power transformer T1 connects the input of bridge rectifier, forms step-down, rectification circuit; The output of bridge rectifier and filter capacitor C1, the filtering of voltage stabilizing didoe VD2 formation in parallel, voltage stabilizing circuit; Thereby the Va of the low-voltage DC after step-down, rectifying and wave-filtering, voltage stabilizing is provided, as the electric energy producing, to power-sensing circuit, ON-OFF control circuit and timing circuit, sends.
5. electricity-saving controller as claimed in claim 2, is characterized in that, described timing circuit comprises storage capacitor C2 in parallel and bleeder resistor R1; The anode of storage capacitor C2 is as charge-discharge end, accepts the electric energy that power supply circuits, power-sensing circuit provide, and provides break-make to control voltage to ON-OFF control circuit simultaneously.
6. electricity-saving controller as claimed in claim 5, is characterized in that, described bleeder resistor R1 is rheostat, for regulating the length of described delay time t.
7. electricity-saving controller as claimed in claim 2, it is characterized in that, described power-sensing circuit comprises current transformer T2, the second bridge rectifier, filter capacitor C3, the circuit of scale operation in the same way consisting of operational amplifier A and external balance resistance R3 thereof, resistance R 4, feedback resistance R5, plays the light-emitting diode VD12 of on-off action; Operational amplifier A provides electric energy by power supply circuits, forms single power supply;
Current transformer T2 access electrical network live wire, access point is between gate-controlled switch and power device, and the current signal of current transformer T2 induction is undertaken by filter capacitor C3, carrying out filtering after rectification by the second bridge rectifier; The anode of filter capacitor C3 is connected with the positive input terminal of operational amplifier A through balance resistance R3, the minus earth of filter capacitor C3 is connected with the negative input end of operational amplifier A by resistance R 4, and feedback resistance R5 is in parallel with negative input end and the output of operational amplifier A; The anode of the output sending and receiving optical diode VD12 of operational amplifier A, the negative electrode of light-emitting diode VD12 provides electric energy for timing circuit.
8. electricity-saving controller as claimed in claim 7, is characterized in that, described feedback resistance R5 is rheostat, for regulating described pre-set threshold value.
9. electricity-saving controller as claimed in claim 2, is characterized in that, described ON-OFF control circuit comprises triode V1, triode V2, base resistance R2, collector electrode fly-wheel diode VD11 and AC relay K;
The break-make that one end of base resistance R2 provides as reception timing circuit is controlled one end of voltage, the other end connecting triode V1 base stage of base resistance R2, the emitter of triode V1 is directly coupled to the base stage of triode V2, the grounded emitter of triode V2, after the coils from parallel connection of coils of fly-wheel diode VD11 and AC relay K, the collector electrode of one end connecting triode V1, V2, the other end is drawn as accepting feeder ear, connects the feeder ear of power supply circuits;
Meanwhile, the switch contact K-1 of AC relay K is as described gate-controlled switch.
10. electricity-saving controller as claimed in claim 9, is characterized in that, described acceptance further connected and be used to indicate the light-emitting diode VD10 whether electricity-saving controller works on feeder ear.
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CN104469221A (en) * 2014-12-08 2015-03-25 巢雨 Automatic television set power-off device
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