CN103762549A - Self-reset overvoltage and undervoltage protector - Google Patents
Self-reset overvoltage and undervoltage protector Download PDFInfo
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- CN103762549A CN103762549A CN201310753405.8A CN201310753405A CN103762549A CN 103762549 A CN103762549 A CN 103762549A CN 201310753405 A CN201310753405 A CN 201310753405A CN 103762549 A CN103762549 A CN 103762549A
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Abstract
The invention discloses a self-reset overvoltage and undervoltage protector. The self-reset overvoltage and undervoltage protector is characterized in that a circuit power supply is used as input of the protector, voltages are connected, a circuit is adopted to detect and sample the voltages, the voltages are converted into digital values, the digital values are sent to a microprocessor, and after the microprocessor judges a collected voltage set value and collected overvoltage and undervoltage set values, a drive circuit drives a magnetic latching relay to switch on and off a main circuit. Therefore, it is guaranteed that residence user equipment works normally when power grid voltages are normal, the user equipment is automatically switched off in the overvoltage and undervoltage process, and the main circuit is automatically switched on when the power supply voltages are restored.
Description
Technical field
The present invention relates to the field that manufactures and designs of overvoltage-undervoltage protector, particularly a kind of Self-recover overvoltage-undervoltage protector.
Background technology
On April 1st, 2012,6.3.2 article of the JGJ242-2011 < < residential housing electrical design standard > > of up-to-date enforcement clearly stipulates: every cover house should arrange that self-recovering type is crossed, under-voltage protector.Self-resetting type over voltage protector is mainly used in frequent generative center line broken string, phase line and center line and connects single phase power supply overvoltage or under voltage occasion anti-and that the serious imbalance of threephase load causes, plays subscriber equipment protective effect.
At present, existing application both at home and abroad, especially nearest 1 year, domestic many enterprises researched and developed rapidly production, but its product respectively has feature.On market, self-resetting type over voltage protector, from operation principle, mainly contains two kinds of analog circuit and digital circuits: adopt simple analog circuit to realize, voltage sample precision is lower, and delay time error is larger; Adopt digital circuit can realize high-precision defencive function, become many client's favors.From work indication, on market, the indication of self-resetting type over voltage protector is divided into two lamps, and green light represents guard mode, and red light represents that the time delay after over voltage state or voltage recover treats on-state.Because red light has represented the existence of two states, therefore can not clearly be in over voltage state or voltage has recovered to be in time delay and has treated on-state, its voltage and delay time change and numerical value also cannot show, can not intuitively reflect self-resetting type over voltage operating state, user is used and has certain blind area.From set point user demand, on market, self-resetting type over voltage protector is fixing nonadjustable in overvoltage, the design of under-voltage and delay time, can not meet the demand of user's all situations.
For above-mentioned situation, a kind of Self-recover overvoltage-undervoltage protector is provided, raising reflects more intuitively voltage when protecting accuracy and time parameter is the problem that prior art need to solve.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of Self-recover overvoltage-undervoltage protector, to reach the object that reflects more intuitively voltage and time parameter when accuracy is protected in raising.
For achieving the above object; technical scheme of the present invention is; a kind of Self-recover overvoltage-undervoltage protector; it is characterized in that: described protector is using circuit power as input; connecting voltage adopts circuit to detect and sample and be converted into digital quantity and give microprocessor voltage; microprocessor drives magnetic latching relay to carry out break-make main circuit by drive circuit after the voltage collecting and overvoltage/undervoltage set point are judged.Thereby assurance residential customer equipment is normally worked when line voltage is normal, and automatic disconnect user equipment in the time of over voltage can automatically be connected main circuit when supply voltage recovers.
Described microprocessor connects Digital Display Circuit, and Digital Display Circuit shows the voltage detecting or delay time by LED, to intuitively inform user, allow user understand power supply operating mode.
Described microprocessor is controlled Digital Display Circuit in sample circuit and is carried out voltage demonstration receiving, and constantly detect voltage whether locate with the parameter area of setting in; If sampled voltage exceeds after setting range drives magnetic latching relay cut-out subscriber equipment to enter time delay simultaneously, start timing and show voltage and the time; When detecting, sampled voltage recovers normally and protector reset after keeping the L time, recloses subscriber equipment.
Described microprocessor attended operation button, so that user sets the parameter of overvoltage/undervoltage and delay time.
Described power circuit is respectively voltage sampling circuit, microprocessor, drive circuit, magnetic latching relay and powers.
A kind of Self-recover overvoltage-undervoltage protector, owing to adopting above-mentioned structure, the invention has the advantages that: 1, adopt the protection of digital circuit over voltage, protection precision is high; 2, adopt LED digital display that real-time supply voltage and delay time are shown, reflection power supply operating mode and guard mode; 3, can to over voltage and delay time set point, adjust by operation push-button, meet users' user demand.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the present invention is further detailed explanation;
Fig. 1 is the structured flowchart of the adjustable Self-recover overvoltage-undervoltage protector of a kind of digital display of the present invention;
Fig. 2 is the software flow pattern of the adjustable Self-recover overvoltage-undervoltage protector of a kind of digital display of the present invention;
Fig. 3 is the schematic appearance of the adjustable Self-recover overvoltage-undervoltage protector of a kind of digital display of the present invention;
In Fig. 1,1, power circuit; 2, voltage adopts circuit; 3, microprocessor; 4, Digital Display Circuit; 5, drive circuit; 6, magnetic latching relay; 7, operation push-button.
Embodiment
As Figure 1-3, the present invention is using circuit power 1 as input, connecting voltage adopts circuit 2 to detect and sample and be converted into digital quantity and give microprocessor 3 voltage, microprocessor 3 drives magnetic latching relay 6 to carry out break-make main circuit by drive circuit 5 after the voltage collecting and overvoltage/undervoltage set point are judged.Thereby assurance residential customer equipment is normally worked when line voltage is normal, and automatic disconnect user equipment in the time of over voltage can automatically be connected main circuit when supply voltage recovers.
The present invention is using residential customer circuit power 1 as input; voltage detecting is carried out in inside; voltage being sampled and is converted into digital quantity gives microprocessor 3 and processes; microprocessor 3 carries out intelligent decision to the voltage collecting and overvoltage/undervoltage set point; microprocessor 3 connects drive circuit 5; to drive magnetic latching relay 6 switchings, thereby control Self-recover overvoltage-undervoltage protector, disconnect or connect.
After electrical network powers on for the first time to self-resetting type over voltage protector; voltage sampling circuit 2 carries out continuous detecting line voltage to house input circuit power supply; and sampled voltage is converted into digital quantity gives microprocessor 3 and carry out logic judgement; when detecting that line voltage is in normal range (NR); output two paths of signals; Digital Display Circuit 4 is exported to show voltage in one tunnel; show real-time normal voltage; another road output adhesive pulse signal is to drive circuit 5; by drive circuit 5, drive magnetic latching relay 6 adhesives; magnetic latching relay 6 adhesives, protector is connected major loop.
Self-resetting type over voltage protector is when line voltage overvoltage or when under-voltage; microprocessor 3 detects electrical network overvoltage or under-voltage by voltage sampling circuit 2; output two paths of signals; Digital Display Circuit 4 is exported on one tunnel; corresponding overvoltage or under-voltage value flickering display, another road output discharges pulse signal to drive circuit 5, by drive circuit 5, drives magnetic latching relay 6 to discharge; protection disconnects major loop, to reach over voltage protection object.
When line voltage recovers normal, microprocessor 3 detects that by voltage sampling circuit 2 power system restoration is normal, normal signal output Digital Display Circuit 4, and enter delay time timing, Digital Display Circuit 4 shows between normal voltage value and time delay in turn, when voltage in delay time all normal, output adhesive pulse signal, to drive circuit 5, drives magnetic latching relay 6 adhesives by drive circuit 5, connects major loop, restore electricity, reach runback object.
By reference to the accompanying drawings the present invention is exemplarily described above; obviously specific implementation of the present invention is not subject to the restrictions described above; as long as the various improvement that adopted technical solution of the present invention to carry out, or directly apply to other occasion without improvement, all within protection scope of the present invention.
Claims (5)
1. a Self-recover overvoltage-undervoltage protector; it is characterized in that: described protector is using circuit power (1) as input; connecting voltage adopts circuit (2) to detect and sample and be converted into digital quantity and give microprocessor (3) voltage; after microprocessor (3) judges the voltage collecting and overvoltage/undervoltage set point, by drive circuit (5), drive magnetic latching relay (6) to carry out break-make main circuit.
2. a kind of Self-recover overvoltage-undervoltage protector according to claim 1, is characterized in that: described microprocessor (3) connects Digital Display Circuit (4), and Digital Display Circuit (4) shows the voltage detecting or delay time by LED.
3. a kind of Self-recover overvoltage-undervoltage protector according to claim 1 and 2, it is characterized in that: described microprocessor (3) is controlled Digital Display Circuit (4) in sampled voltage and carried out voltage demonstration receiving, and constantly detect voltage whether locate with the parameter area of setting in; If sampled voltage exceeds after setting range drives magnetic latching relay (6) cut-out subscriber equipment to enter time delay simultaneously, start timing and show voltage and the time; When detecting, sampled voltage recovers normally and protector reset after keeping the L time, recloses subscriber equipment.
4. a kind of Self-recover overvoltage-undervoltage protector according to claim 1, is characterized in that: described microprocessor (3) attended operation button (7).
5. a kind of Self-recover overvoltage-undervoltage protector according to claim 1, is characterized in that: described power circuit (1) is respectively voltage sampling circuit (2), microprocessor (3), drive circuit (5), magnetic latching relay (6) and powers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310753405.8A CN103762549A (en) | 2013-12-31 | 2013-12-31 | Self-reset overvoltage and undervoltage protector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310753405.8A CN103762549A (en) | 2013-12-31 | 2013-12-31 | Self-reset overvoltage and undervoltage protector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103762549A true CN103762549A (en) | 2014-04-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310753405.8A Pending CN103762549A (en) | 2013-12-31 | 2013-12-31 | Self-reset overvoltage and undervoltage protector |
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| CN (1) | CN103762549A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201490686U (en) * | 2009-07-11 | 2010-05-26 | 杭州之江开关股份有限公司 | Self-recover overvoltage-undervoltage protector |
| CN103050938A (en) * | 2012-12-21 | 2013-04-17 | 张增乐 | Full-automatic over-voltage and under-voltage time-delaying protector |
| CN203026906U (en) * | 2013-01-16 | 2013-06-26 | 黄锋勇 | Resettable over-voltage and under-voltage protector |
| CN103311884A (en) * | 2013-04-23 | 2013-09-18 | 上海良信电器股份有限公司 | Non-stick overvoltage and under-voltage protector with leakage protection function |
| CN203326551U (en) * | 2013-01-23 | 2013-12-04 | 陆继明 | Magnetic latching non-stick over-voltage and under-voltage protector |
| CN203774749U (en) * | 2013-12-31 | 2014-08-13 | 安徽鑫龙电器股份有限公司 | Digital display adjustable self-reset type overvoltage and undervoltage protector |
-
2013
- 2013-12-31 CN CN201310753405.8A patent/CN103762549A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201490686U (en) * | 2009-07-11 | 2010-05-26 | 杭州之江开关股份有限公司 | Self-recover overvoltage-undervoltage protector |
| CN103050938A (en) * | 2012-12-21 | 2013-04-17 | 张增乐 | Full-automatic over-voltage and under-voltage time-delaying protector |
| CN203026906U (en) * | 2013-01-16 | 2013-06-26 | 黄锋勇 | Resettable over-voltage and under-voltage protector |
| CN203326551U (en) * | 2013-01-23 | 2013-12-04 | 陆继明 | Magnetic latching non-stick over-voltage and under-voltage protector |
| CN103311884A (en) * | 2013-04-23 | 2013-09-18 | 上海良信电器股份有限公司 | Non-stick overvoltage and under-voltage protector with leakage protection function |
| CN203774749U (en) * | 2013-12-31 | 2014-08-13 | 安徽鑫龙电器股份有限公司 | Digital display adjustable self-reset type overvoltage and undervoltage protector |
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Application publication date: 20140430 |
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| RJ01 | Rejection of invention patent application after publication |