CN205385282U - Voltage controller is owed in outage time delay - Google Patents
Voltage controller is owed in outage time delay Download PDFInfo
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- CN205385282U CN205385282U CN201620102321.7U CN201620102321U CN205385282U CN 205385282 U CN205385282 U CN 205385282U CN 201620102321 U CN201620102321 U CN 201620102321U CN 205385282 U CN205385282 U CN 205385282U
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Abstract
The utility model relates to a voltage controller is owed in outage time delay, it includes filter circuit, and its input links to each other with the external power grid, and this filter circuit's output links to each other with step -down rectifying circuit, power supply circuit and voltage signal acquisition circuit, the microprocesso, microprocessor links to each other with a voltage signal acquisition circuit and a delay adjustment device, power charging and discharging circuit, its charge the end with power supply circuit's output links to each other, and the discharge end links to each other with microprocessor, coil control circuit's input with step -down rectifying circuit's output links to each other, and coil control circuit's control end and microprocessor link to each other, capacitor charging and discharging circuit, its charge the end with step -down rectifying circuit's output links to each other, and the discharge end links to each other with release coil QT. Through coil control circuit, capacitor charging and discharging circuit and power charging and discharging circuit have satisfied when delay control, microprocessor and release coil QT's the normal power supply to the delayed effect has been reached.
Description
Technical field
This utility model relates to under-voltage protection technical field, particularly to a kind of power cut off delay under-voltage controller.
Background technology
In power supply circuits, under-voltage fault often occurs.When under-voltage fault occurs, as protective measure can not be taked in time, when voltage exceed some equipment maximum bear voltage time, it will damage equipment, cause huge loss.Pressure-failure protector is just used to reduce the device of the loss that this situation causes, timely disconnecting circuit when it can have a under-voltage fault in power supply circuits being detected, protects equipment.
It is said that in general, equipment can bear the under-voltage work of short time, if in this time under-voltage recovery normal power supply, equipment will not be damaged, and in this case, power-off is but likely to result in loss of data, damp production, the loss caused is extended on the contrary.Current under-voltage protection product does not have can monitor and choose whether the function of power-off by Intelligent time delay.
Utility model content
The technical problems to be solved in the utility model is to provide one and is suitable to when supply line is under-voltage or during power-off, carries out the power cut off delay under-voltage controller of delayed releasing.
In order to solve above-mentioned technical problem, this utility model provides a kind of power cut off delay under-voltage controller, it includes filter circuit, and its input is connected with external power grid, and the outfan of this filter circuit is connected with step-down rectifying circuit, power circuit and voltage signal acquisition circuit；Microprocessor, described microprocessor is connected with voltage signal acquisition circuit and a delay adjustment device；Power supply charge-discharge circuit, its charging end is connected with the outfan of described power circuit, and discharge end is connected with microprocessor；Coil control circuit, electric or dead electricity the first switching tube Q2 is obtained including trip coil QT with for controlling this trip coil QT, the input of trip coil QT is connected with the outfan of described step-down rectifying circuit, and the control end of the first switching tube Q2 is connected with microprocessor；Capacitor charge and discharge circuit, its charging end is connected with the outfan of described step-down rectifying circuit, and discharge end is connected with trip coil QT.
Described capacitor charge and discharge circuit it include the first electrochemical capacitor C6, the first Zener diode Z1, the second diode D3, the 3rd current regulator diode D4, the 4th diode D5, the first resistance R2 and second switch pipe Q1；Wherein the anode of the first electrochemical capacitor C6 and the negative electrode of the first Zener diode Z1 connect the outfan of step-down rectifying circuit, the negative electrode of the first electrochemical capacitor C6 connects the negative electrode of the second diode D3 and the anode of the first Zener diode Z1, the anode of the second diode D3 connects the anode of the 3rd current regulator diode D4, the minus earth of the 3rd current regulator diode D4；The anode of the input termination first Zener diode Z1 of the first resistance R2, first end of the output termination second switch pipe Q1 of the first resistance R2, the anode of second termination the 4th diode D5 of second switch pipe Q1, the control end of second switch pipe Q1 is connected with microprocessor, the minus earth of the 4th diode D5.
Described power supply charge-discharge circuit includes the 5th diode D1, the 6th diode D2, the second resistance R1, the second electrochemical capacitor C5, the negative electrode of described 5th diode D1 and one end of the second resistance R1 are connected, the other end of the second resistance R1 and the positive pole of the second electrochemical capacitor C5 are connected, the minus earth of the second electrochemical capacitor C5；The anode of described 5th diode D1 and the negative electrode of the 6th diode D2 are connected, and the anode of the 6th diode D2 is connected with the positive pole of described second electrochemical capacitor C5, and the negative electrode of the 6th diode D2 is connected with the feeder ear of microprocessor.
Described step-down rectifying circuit includes the 3rd electrochemical capacitor C4 and rectifier bridge, and the anode of described 3rd electrochemical capacitor C4 is connected with the outfan of rectifier bridge, the minus earth of described 3rd electrochemical capacitor C4.
Described first switching tube Q2 adopts audion or metal-oxide-semiconductor.
Described second switch pipe Q1 adopts audion or metal-oxide-semiconductor.
The beneficial effects of the utility model are: this utility model meets when delays time to control by described coil control circuit, capacitor charge and discharge circuit and power supply charge-discharge circuit, the normal power supply of microprocessor and trip coil QT, thus having reached the effect of time delay；It addition, also by preferably employing current regulator diode so that after power-off, the discharge current of electrochemical capacitor is constant, and this constant discharge ensures that trip coil QT may be at longer time delay attracting state, to obtain working effect more preferably.
Accompanying drawing explanation
Fig. 1 is the circuit block diagram of power cut off delay under-voltage controller of the present utility model.
Detailed description of the invention
Below in conjunction with accompanying drawing, this utility model embodiment is described further:
As it can be seen, a kind of power cut off delay under-voltage controller, it includes filter circuit, and its input is connected with external power grid, and the outfan of this filter circuit is connected with step-down rectifying circuit, power circuit and voltage signal acquisition circuit；Microprocessor, described microprocessor is connected with voltage signal acquisition circuit and a delay adjustment device；Power supply charge-discharge circuit, its charging end is connected with the outfan of described power circuit, and discharge end is connected with microprocessor；Coil control circuit, electric or dead electricity the first switching tube Q2 is obtained including trip coil QT with for controlling this trip coil QT, the input of trip coil QT is connected with the outfan of described step-down rectifying circuit, and the control end of the first switching tube Q2 is connected with microprocessor；Capacitor charge and discharge circuit, its charging end is connected with the outfan of described step-down rectifying circuit, and discharge end is connected with trip coil QT.
Wherein, described delay adjustment circuit can adopt intervalometer or the disclosed a kind of delay circuit of Chinese patent literature (application publication number: CN102332899A)；The technical scheme that described microprocessor obtains current voltage value by voltage signal acquisition circuit is disclosed in the prior art, no longer elaborates here；Voltage signal acquisition circuit includes reduction voltage circuit, the A/D module being connected with this reduction voltage circuit, and reduction voltage circuit can adopt series connection bleeder circuit to constitute, and A/D module can adopt 7705 modules；Microprocessor can adopt C51 series monolithic；Described power circuit is realized by reduction voltage circuit and 7805 stabilivolts, it is also possible to add 7812 demands meeting different integrated circuit as required.
Concrete, described first switching tube Q2 can adopt audion or metal-oxide-semiconductor just to realize switching function, and according to audion, then the first end is colelctor electrode, and the second end is emitter stage, and control end is base stage；According to metal-oxide-semiconductor, then the first end is D pole, and the second end is S pole, and controlling end is G pole.
Described capacitor charge and discharge circuit it include the first electrochemical capacitor C6, the first Zener diode Z1, the second diode D3, the 3rd current regulator diode D4, the 4th diode D5, the first resistance R2 and second switch pipe Q1；Wherein the anode of the first electrochemical capacitor C6 and the negative electrode of the first Zener diode Z1 connect the outfan of step-down rectifying circuit, the negative electrode of the first electrochemical capacitor C6 connects the negative electrode of the second diode D3 and the anode of the first Zener diode Z1, the anode of the second diode D3 connects the anode of the 3rd current regulator diode D4, the minus earth of the 3rd current regulator diode D4；The anode of the input termination first Zener diode Z1 of the first resistance R2, first end of the output termination second switch pipe Q1 of the first resistance R2, the anode of second termination the 4th diode D5 of second switch pipe Q1, the control end of second switch pipe Q1 is connected with microprocessor, the minus earth of the 4th diode D5.Described second switch pipe Q1 adopts audion or metal-oxide-semiconductor, and according to audion, then according to audion, then the first end is colelctor electrode, and the second end is emitter stage, and control end is base stage；According to metal-oxide-semiconductor, then the first end is D pole, and the second end is S pole, and controlling end is G pole.
Described power supply charge-discharge circuit includes the 5th diode D1, the 6th diode D2, the second resistance R1, the second electrochemical capacitor C5, the negative electrode of described 5th diode D1 and one end of the second resistance R1 are connected, the other end of the second resistance R1 and the positive pole of the second electrochemical capacitor C5 are connected, the minus earth of the second electrochemical capacitor C5；The anode of described 5th diode D1 and the negative electrode of the 6th diode D2 are connected, and the anode of the 6th diode D2 is connected with the positive pole of described second electrochemical capacitor C5, and the negative electrode of the 6th diode D2 is connected with the feeder ear of microprocessor.
Described step-down rectifying circuit includes the 3rd electrochemical capacitor C4 and rectifier bridge, the anode of described 3rd electrochemical capacitor C4 is connected with the outfan of rectifier bridge, the minus earth of described 3rd electrochemical capacitor C4, for by electrical network ac high voltage after decompression capacitor and rectifier bridge, adjusting to the voltage that can drive trip coil QT action, its electric capacity C3 therein can be resistance.
The work process of described power cut off delay under-voltage controller:
When powering on, second switch pipe Q1 is not turned on, and when the 3rd electrochemical capacitor C4 both end voltage reaches the threshold values of the coil action message of setting, the first switching tube Q2 conducting, trip coil QT flows through electric current, makes under-voltage electric magnet action.
After action, second switch pipe Q1 turns on, and the first electrochemical capacitor C6 is electrically charged, and the first Zener diode Z1 ensures that the first electrochemical capacitor C6 will not be overcharged, and plays the effect of current limliting during the first resistance R2 charging.
When under-voltage controller power-off, second electrochemical capacitor C5 of power supply charge-discharge circuit ensures microprocessor normal operation, time delay is carried out by the delay time set, now the first switching tube Q2 tends to remain on, first electrochemical capacitor C6 is discharged by trip coil QT, the first switching tube Q2, the 3rd current regulator diode D4, the second diode D3, thus ensureing the normal attracting state of trip coil QT, 3rd current regulator diode D4, ensure to flow through the current constant of trip coil QT, it is possible to extend the discharge time of the first electrochemical capacitor C6.
Under-voltage controller work process:
Whether microprocessor is normal by voltage signal acquisition electric circuit inspection supply voltage, when supply voltage is normal, output control instruction makes the first switching tube Q2 conducting, trip coil QT is in attracting state, then microprocessor output control instruction makes second switch pipe Q1 turn on, and charges to the first electrochemical capacitor C6；When supply voltage is under-voltage or during power-off, ensure that microprocessor is in normal operating conditions by the second electrochemical capacitor C5 in power supply charge-discharge circuit, simultaneously switch off second switch pipe Q1, release the charged state of the first electrochemical capacitor C6, keeping the first switching tube Q2 is conducting state, now the first electrochemical capacitor C6 switches to discharge condition at once, in order to extend the discharge time of the first electrochemical capacitor C6, special increase the 3rd current regulator diode D4, the constant discharge of the first electrochemical capacitor C6 ensures that coil is in longer time delay attracting state, after delay time arrives, microprocessor output order makes the first switching tube Q2 disconnect, trip coil QT is made to be in release conditions.
Being only preferred implementation of the present utility model above in association with the embodiment described by accompanying drawing, and not restriction to protection domain of the present utility model, any improvement done based on this utility model spirit all ought within this utility model protection domain.
Claims (6)
1. a power cut off delay under-voltage controller, it is characterised in that including:
Filter circuit, its input is connected with external power grid, and the outfan of this filter circuit is connected with step-down rectifying circuit, power circuit and voltage signal acquisition circuit；Microprocessor, described microprocessor is connected with voltage signal acquisition circuit and a delay adjustment device；
Power supply charge-discharge circuit, its charging end is connected with the outfan of described power circuit, and discharge end is connected with microprocessor；
Coil control circuit, electric or dead electricity the first switching tube Q2 is obtained including trip coil QT with for controlling this trip coil QT, the input of trip coil QT is connected with the outfan of described step-down rectifying circuit, and the control end of the first switching tube Q2 is connected with microprocessor；
Capacitor charge and discharge circuit, its charging end is connected with the outfan of described step-down rectifying circuit, and discharge end is connected with trip coil QT.
2. a kind of power cut off delay under-voltage controller according to claim 1, it is characterised in that: described capacitor charge and discharge circuit it include the first electrochemical capacitor C6, the first Zener diode Z1, the second diode D3, the 3rd current regulator diode D4, the 4th diode D5, the first resistance R2 and second switch pipe Q1；Wherein the anode of the first electrochemical capacitor C6 and the negative electrode of the first Zener diode Z1 connect the outfan of step-down rectifying circuit, the negative electrode of the first electrochemical capacitor C6 connects the negative electrode of the second diode D3 and the anode of the first Zener diode Z1, the anode of the second diode D3 connects the anode of the 3rd current regulator diode D4, the minus earth of the 3rd current regulator diode D4；The anode of the input termination first Zener diode Z1 of the first resistance R2, first end of the output termination second switch pipe Q1 of the first resistance R2, the anode of second termination the 4th diode D5 of second switch pipe Q1, the control end of second switch pipe Q1 is connected with microprocessor, the minus earth of the 4th diode D5.
3. a kind of power cut off delay under-voltage controller according to claim 1, it is characterized in that: described power supply charge-discharge circuit includes the 5th diode D1, the 6th diode D2, the second resistance R1, the second electrochemical capacitor C5, the negative electrode of described 5th diode D1 and one end of the second resistance R1 are connected, the other end of the second resistance R1 and the positive pole of the second electrochemical capacitor C5 are connected, the minus earth of the second electrochemical capacitor C5；The anode of described 5th diode D1 and the negative electrode of the 6th diode D2 are connected, and the anode of the 6th diode D2 is connected with the positive pole of described second electrochemical capacitor C5, and the negative electrode of the 6th diode D2 is connected with the feeder ear of microprocessor.
4. a kind of power cut off delay under-voltage controller according to claim 1, it is characterized in that: described step-down rectifying circuit includes the 3rd electrochemical capacitor C4 and rectifier bridge, the anode of described 3rd electrochemical capacitor C4 is connected with the outfan of rectifier bridge, the minus earth of described 3rd electrochemical capacitor C4.
5. a kind of power cut off delay under-voltage controller according to claim 1, it is characterised in that: described first switching tube Q2 adopts audion or metal-oxide-semiconductor.
6. a kind of power cut off delay under-voltage controller according to claim 2, it is characterised in that: described second switch pipe Q1 adopts audion or metal-oxide-semiconductor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620102321.7U CN205385282U (en) | 2016-02-02 | 2016-02-02 | Voltage controller is owed in outage time delay |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620102321.7U CN205385282U (en) | 2016-02-02 | 2016-02-02 | Voltage controller is owed in outage time delay |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205385282U true CN205385282U (en) | 2016-07-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620102321.7U Active CN205385282U (en) | 2016-02-02 | 2016-02-02 | Voltage controller is owed in outage time delay |
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| Country | Link |
|---|---|
| CN (1) | CN205385282U (en) |
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2016
- 2016-02-02 CN CN201620102321.7U patent/CN205385282U/en active Active
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