CN205265230U - Voltage controller is owed in outage time delay - Google Patents
Voltage controller is owed in outage time delay Download PDFInfo
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- CN205265230U CN205265230U CN201520407732.2U CN201520407732U CN205265230U CN 205265230 U CN205265230 U CN 205265230U CN 201520407732 U CN201520407732 U CN 201520407732U CN 205265230 U CN205265230 U CN 205265230U
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Abstract
The utility model relates to a voltage controller is owed in outage time delay, include: filter circuit, the microprocesso. Voltage signal acquisition circuit, the delay adjustment device, power charging and discharging circuit, coil control circuit, capacitor charging and discharging circuit, capacitor charging and discharging circuit: an electrolytic capacitor's positive pole and the 2nd zener diode's negative pole connect step -down rectifying circuit's output, and an electrolytic capacitor's negative pole connects the negative pole of second diode and the 2nd zener diode's positive pole, and the positive pole of second diode connects the minus earth of the positive pole of third current regulator diode, third current regulator diode, the 2nd zener diode's of input termination of first resistance positive pole, the first end of the output termination second switch of first resistance pipe, the positive pole of the second termination fourth diode of second switch pipe, the control end of second switch pipe links to each other with microprocessor, the minus earth of fourth diode. The utility model discloses the circuit has simple structure, reliable and stable characteristics.
Description
Technical field
The utility model relates to under-voltage protection technical field, is specifically related to power cut off delay under-voltage controller.
Background technology
In power supply circuits, often there will be under-voltage fault. Occurring when under-voltage fault, as do not taked in time safeguard measure, when the maximum that exceedes some equipment when voltage is born voltage, will damage equipment, cause huge loss. Pressure-failure protector is exactly the device for reducing the loss that this situation causes, and it can be detecting timely disconnecting circuit while having under-voltage fault in power supply circuits, protection equipment.
Generally speaking, equipment can bear the under-voltage work of short time, if in this time under-voltage recovery normal power supply, equipment can not be damaged, and under these circumstances, power-off but may cause loss of data, damp production, the loss causing is extended on the contrary. Current under-voltage protection product does not have the function of can Intelligent time delay monitoring and select whether power-off.
Utility model content
The technical problems to be solved in the utility model is to provide one and is suitable for when supply line is under-voltage or when power-off, carry out the power cut off delay under-voltage controller of delayed releasing.
In order to solve the problems of the technologies described above, the utility model provides a kind of power cut off delay under-voltage controller, comprise: filter circuit, its input is connected with external power grid, and the output of this filter circuit is connected with step-down rectifying circuit, power circuit and voltage signal acquisition circuit; Microprocessor; Described microprocessor is connected with a timer part with voltage signal acquisition circuit;
Power supply charge-discharge circuit, its charging end is connected with the output of described power circuit, and discharge end is connected with microprocessor; Coil control circuit, comprises trip coil and obtains the first switching tube of electric or dead electricity for controlling this trip coil, the input of trip coil is connected with the output of described step-down rectifying circuit, and the control end of the first switching tube is connected with microprocessor; Capacitor charge and discharge circuit; Described capacitor charge and discharge circuit comprises: the first electrochemical capacitor, the second Zener diode, the second diode, the 3rd current regulator diode, the 4th diode, the first resistance and second switch pipe; Wherein the negative electrode of the anode of the first electrochemical capacitor and the second Zener diode connects the output of step-down rectifying circuit, the negative electrode of the first electrochemical capacitor connects the negative electrode of the second diode and the anode of the second Zener diode, the anode of the second diode connects the anode of the 3rd current regulator diode, the minus earth of the 3rd current regulator diode; The anode of input termination second Zener diode of the first resistance, the first end of the output termination second switch pipe of the first resistance, the anode of the second termination the 4th diode of second switch pipe, the control end of second switch pipe is connected with microprocessor, the minus earth of the 4th diode.
Further, the 3rd diode adopts current regulator diode.
Technique scheme of the present utility model has the following advantages compared to existing technology: the utility model has met when the time delay 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, thus reach the effect of time delay; In addition, also by preferably adopting current regulator diode, make after power-off the discharge current of electrochemical capacitor constant, this constant discharge ensures that trip coil can be in longer time delay attracting state, to obtain better working effect.
Brief description of the drawings
For content of the present utility model is more likely to be clearly understood, below the specific embodiment by reference to the accompanying drawings of basis, the utility model is described in further detail, wherein
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 drawings and Examples, the present invention is described in detail:
See Fig. 1, a kind of power cut off delay under-voltage controller, comprising: filter circuit, its input is connected with external power grid, and the output of this filter circuit is connected with step-down rectifying circuit, power circuit and voltage signal acquisition circuit; Power supply charge-discharge circuit, its charging end is connected with the output of described power circuit, and discharge end is connected with microprocessor; Coil control circuit, comprises trip coil QT and obtains the first switching tube Q2 of electric or dead electricity for controlling this trip coil, the input of trip coil is connected with the output of described step-down rectifying circuit; Capacitor charge and discharge circuit, its charge-discharge end is connected with the input of circle control circuit. Described microprocessor is connected with control end and a timer part of voltage signal acquisition circuit, the first switching tube.
Wherein, described delay adjustment circuit can adopt timer, or Chinese patent literature, the disclosed a kind of delay circuit of its application publication number CN102332899A; The technical scheme that described one-chip computer module obtains current voltage value by voltage signal acquisition circuit is disclosed in the prior art, no longer elaborates here; The AD module that voltage signal acquisition circuit comprises reduction voltage circuit, is connected with this reduction voltage circuit, reduction voltage circuit can adopt series connection bleeder circuit to form, and AD module can adopt 7705 modules; One-chip computer module can adopt C51 series monolithic; Described power circuit is realized by reduction voltage circuit and 7805 voltage-stabiliser tubes, also can add as required 7812 also to meet different integrated circuit needs.
Concrete, the charge-discharge end of described capacitor charge and discharge circuit is connected with the input of trip coil QT, the output of this trip coil QT is connected with the first end of described the first switching tube Q2, the second end ground connection of this first switching tube Q2, the control end of described the first switching tube Q2 is connected with described microprocessor; Described the first switching tube Q2 can adopt triode or metal-oxide-semiconductor to realize switching function, if adopt triode, first end can be colelctor electrode, and the second end is emitter stage, and control end is base stage; If employing metal-oxide-semiconductor, first end is the D utmost point, and the second end is the S utmost point, and control end is the G utmost point.
Described capacitor charge and discharge circuit comprises: 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 R 2 and second switch pipe Q1; Wherein the negative electrode of the anode of the first electrochemical capacitor C6 and the second Zener diode Z1 connects the output 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 second 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 input termination second Zener diode of the first resistance R 2, the first end of the output termination second switch pipe Q1 of the first resistance R 2, the anode of the 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 can adopt triode or metal-oxide-semiconductor to realize switching function, if adopt triode, first end can be colelctor electrode, and the second end is emitter stage, and control end is base stage; If employing metal-oxide-semiconductor, first end is the D utmost point, and the second end is the S utmost point, and control end is the G utmost point.
Described power supply charge-discharge circuit comprises: the 5th diode D1 that anode is connected with the feeder ear of described power circuit, the negative electrode of the 5th diode D1 is connected with one end of the second resistance R 1, the other end of this second resistance R 1 is connected with the positive pole of the second electrochemical capacitor C5, the minus earth of this second electrochemical capacitor C5; The anode of described the 5th diode D1 is also connected with the negative electrode of the 6th diode D2, and the anode of the 6th diode D2 is connected with the positive pole of described the second electrochemical capacitor C5; The negative electrode of described the 6th diode D2 is also connected with the feeder ear of microprocessor.
Step-down rectifying circuit comprises the 3rd electrochemical capacitor C4, its purposes be by electrical network ac high voltage after decompression capacitor and rectifier bridge, adjust to the voltage that can drive trip coil QT action, and capacitor C 3 wherein can be also resistance.
The course of work of described power cut off delay under-voltage controller: not conducting of second switch pipe Q1 while powering on, in the time that the 3rd electrochemical capacitor C4 both end voltage reaches the threshold value of coil action message of setting, the first switching tube Q2 conducting, trip coil QT current flowing, makes the action of under-voltage electromagnet. After action, second switch pipe Q1 conducting, the first electrochemical capacitor C6 is charged, and the first zener diode Z1 ensures that the first electrochemical capacitor C6 can not be overcharged, and the first resistance R 2 plays current limliting while charging; In the time of the power-off of under-voltage controller, the second electrochemical capacitor C5 guarantee microprocessor of power supply charge-discharge circuit is normally worked, carry out time delay by the delay time of setting, now the first switching tube Q2 keeps conducting state, the first electrochemical capacitor C6 discharges by trip coil QT, the first switching tube Q2, the 3rd current regulator diode D4, the second diode D3, thereby ensure the normal attracting state of trip coil QT, D4 preferably adopts current regulator diode, the current constant of trip coil coil QT is flow through in guarantee, can extend the discharge time of the first electrochemical capacitor C6.
The under-voltage controller course of work: whether microprocessor is normal by voltage signal acquisition electric circuit inspection supply voltage, when supply voltage 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 conducting, gives the first electrochemical capacitor C6 charging, when supply voltage is under-voltage or when power-off, ensure that by the second electrochemical capacitor C5 in power supply charge-discharge circuit microprocessor is in normal operating conditions, disconnect second switch pipe Q1 simultaneously, remove 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 the 3rd current regulator diode D4 that increases, 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 disconnects the first switching tube Q2, make trip coil QT in release conditions.
Obviously, above-described embodiment is only for the utility model example is clearly described, and is not the restriction to embodiment of the present utility model. For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description. Here without also giving exhaustive to all embodiments. And these belong to apparent variation that spirit of the present utility model extended out or variation still among protection domain of the present utility model.
Claims (1)
1. a power cut off delay under-voltage controller, comprising:
Filter circuit, its input is connected with external power grid, and the output of this filter circuit is connected with step-down rectifying circuit, power circuit and voltage signal acquisition circuit;
Microprocessor, described microprocessor is connected with a timer part with voltage signal acquisition circuit;
Power supply charge-discharge circuit, its charging end is connected with the output of described power circuit, and discharge end is connected with microprocessor;
Coil control circuit, comprises trip coil and obtains the first switching tube of electric or dead electricity for controlling this trip coil, the input of trip coil is connected with the output of described step-down rectifying circuit, and the control end of the first switching tube is connected with microprocessor;
Characterized by further comprising:
Capacitor charge and discharge circuit; Described capacitor charge and discharge circuit comprises: the first electrochemical capacitor, the second Zener diode, the second diode, the 3rd current regulator diode, the 4th diode, the first resistance and second switch pipe; Wherein the negative electrode of the anode of the first electrochemical capacitor and the second Zener diode connects the output of step-down rectifying circuit, the negative electrode of the first electrochemical capacitor connects the negative electrode of the second diode and the anode of the second Zener diode, the anode of the second diode connects the anode of the 3rd current regulator diode, the minus earth of the 3rd current regulator diode; The anode of input termination second Zener diode of the first resistance, the first end of the output termination second switch pipe of the first resistance, the anode of the second termination the 4th diode of second switch pipe, the control end of second switch pipe is connected with microprocessor, the minus earth of the 4th diode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520407732.2U CN205265230U (en) | 2015-06-15 | 2015-06-15 | Voltage controller is owed in outage time delay |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520407732.2U CN205265230U (en) | 2015-06-15 | 2015-06-15 | Voltage controller is owed in outage time delay |
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| Publication Number | Publication Date |
|---|---|
| CN205265230U true CN205265230U (en) | 2016-05-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520407732.2U Expired - Fee Related CN205265230U (en) | 2015-06-15 | 2015-06-15 | Voltage controller is owed in outage time delay |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109981097A (en) * | 2019-03-12 | 2019-07-05 | 福建睿能科技股份有限公司 | A kind of power supply circuit and knitting electric-control system power supply unit |
| CN112542819A (en) * | 2020-12-01 | 2021-03-23 | 真兰电气(上海)有限公司 | Under-voltage protection circuit |
-
2015
- 2015-06-15 CN CN201520407732.2U patent/CN205265230U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109981097A (en) * | 2019-03-12 | 2019-07-05 | 福建睿能科技股份有限公司 | A kind of power supply circuit and knitting electric-control system power supply unit |
| CN109981097B (en) * | 2019-03-12 | 2022-10-25 | 福建睿能科技股份有限公司 | Power supply circuit and power supply device of knitting electrical system |
| CN112542819A (en) * | 2020-12-01 | 2021-03-23 | 真兰电气(上海)有限公司 | Under-voltage protection circuit |
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| DD01 | Delivery of document by public notice |
Addressee: Wenzhou is strange electric Science and Technology Ltd. forever Document name: Notification to Make Rectification |
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| CF01 | Termination of patent right due to non-payment of annual fee |
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| CF01 | Termination of patent right due to non-payment of annual fee |