CN203774749U - Digital display adjustable self-reset type overvoltage and undervoltage protector - Google Patents
Digital display adjustable self-reset type overvoltage and undervoltage protector Download PDFInfo
- Publication number
- CN203774749U CN203774749U CN201320892130.1U CN201320892130U CN203774749U CN 203774749 U CN203774749 U CN 203774749U CN 201320892130 U CN201320892130 U CN 201320892130U CN 203774749 U CN203774749 U CN 203774749U
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- voltage
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- digital display
- overvoltage
- microprocessor
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Abstract
The utility model discloses a digital display adjustable self-reset type overvoltage and undervoltage protector which is characterized in that a circuit power supply of the protector acts as input to be connected with a voltage sampling circuit to detect and sample voltage and convert voltage into digital quantity to be transmitted to a microprocessor. After the acquired voltage and overvoltage and undervoltage preset values are judged by the microprocessor, a main circuit is connected and disconnected by driving a magnetic latching relay via a drive circuit so that residential user equipment is ensured to normally work when power grid voltage is normal, the user equipment is automatically disconnected in the overvoltage and undervoltage states, and the main circuit can be automatically connected when power supply voltage recovers.
Description
Technical field
The utility model relates to the field that manufactures and designs of overvoltage-undervoltage protector, particularly the adjustable Self-recover overvoltage-undervoltage protector of a kind of digital display.
Background technology
On April 1st, 2012, JGJ242-2011 " the residential housing electrical design specification " 6.3.2 article of up-to-date enforcement clearly specifies: 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 instruction, on market, the instruction 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, provide a kind of digital display adjustable Self-recover overvoltage-undervoltage protector, raising reflects more intuitively voltage when protecting accuracy and time parameter is the problem that prior art need to solve.
Utility model content
Technical problem to be solved in the utility model is to provide a kind of digital display adjustable 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; the technical solution of the utility model is; the adjustable Self-recover overvoltage-undervoltage protector of a kind of digital display; it is characterized in that: described protector is using circuit power as input; connecting voltage sampling circuit detects and samples 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 guarantee residential customer equipment is normally worked in the time that line voltage is normal, and automatic disconnect user equipment in the time of over voltage can automatically be connected main circuit in the time that 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; Start timing and show voltage and the time if sampled voltage exceeds after setting range drives magnetic latching relay cut-out subscriber equipment to enter time delay simultaneously; 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.
The adjustable Self-recover overvoltage-undervoltage protector of a kind of digital display, owing to adopting above-mentioned structure, the utility model has the advantage of: 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 adjust over voltage and delay time set point by operation push-button, meet users' user demand.
Brief description of the drawings
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail;
Fig. 1 is the structured flowchart of the adjustable Self-recover overvoltage-undervoltage protector of a kind of digital display of the utility model;
Fig. 2 is the software flow pattern of the adjustable Self-recover overvoltage-undervoltage protector of a kind of digital display of the utility model;
Fig. 3 is the schematic appearance of the adjustable Self-recover overvoltage-undervoltage protector of a kind of digital display of the utility model;
In Fig. 1,1, power circuit; 2, voltage sampling circuit; 3, microprocessor; 4, Digital Display Circuit; 5, drive circuit; 6, magnetic latching relay; 7, operation push-button.
Embodiment
As Figure 1-3, the utility model is using circuit power 1 as input, connecting voltage sampling circuit 2 detects and samples 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 guarantee residential customer equipment is normally worked in the time that line voltage is normal, and automatic disconnect user equipment in the time of over voltage can automatically be connected main circuit in the time that supply voltage recovers.
Microprocessor 3 connects Digital Display Circuit 4, and Digital Display Circuit 4 shows the voltage detecting or delay time by LED, to intuitively inform user, allows user understand power supply operating mode.Microprocessor 3 attended operation buttons 7, so that user sets the parameter of overvoltage/undervoltage and delay time.Power circuit 1 is respectively voltage sampling circuit 2, microprocessor 3, drive circuit 5, magnetic latching relay 6 and powers.
Microprocessor 2 is controlled Digital Display Circuit 4 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 setting range and drives magnetic latching relay 6 to cut off after subscriber equipment entered time delay to start timing and show voltage and the time simultaneously; When detecting, sampled voltage recovers normally and protector reset after keeping the L time, recloses subscriber equipment.
The utility model 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, disconnect or connect thereby control Self-recover overvoltage-undervoltage protector.
Digital Display Circuit 4 shows the voltage detecting or delay time by LED, to intuitively inform user, allow user understand power supply operating mode.Microprocessor 3 is connected with operation push-button 7, can set over voltage and delay time parameter by operation push-button.In voltage detecting circuit, be provided with photoelectrical coupler, the voltage of current power supply is carried out to continuous sampling, then send in analog to digital converter.
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; in the time 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; drive magnetic latching relay 6 adhesives by drive circuit 5; 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, drives magnetic latching relay 6 to discharge by drive circuit 5; protection disconnects major loop, to reach over voltage protection object.
In the time that 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 utility model is exemplarily described above; obviously the utility model specific implementation is not subject to the restrictions described above; as long as the various improvement that adopted technical solutions of the utility model to carry out; or directly apply to other occasion without improvement, all within protection range of the present utility model.
Claims (4)
1. the adjustable Self-recover overvoltage-undervoltage protector of digital display; it is characterized in that: described protector is using circuit power (1) as input; connecting voltage sampling circuit (2) detects and samples and be converted into digital quantity and give microprocessor (3) voltage; after microprocessor (3) judges the voltage collecting and overvoltage/undervoltage set point, drive magnetic latching relay (6) to carry out break-make main circuit by drive circuit (5).
2. the adjustable Self-recover overvoltage-undervoltage protector of a kind of digital display according to claim 1; it 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. the adjustable Self-recover overvoltage-undervoltage protector of a kind of digital display according to claim 1, is characterized in that: described microprocessor (3) attended operation button (7).
4. the adjustable Self-recover overvoltage-undervoltage protector of a kind of digital display 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 |
|---|---|---|---|
| CN201320892130.1U CN203774749U (en) | 2013-12-31 | 2013-12-31 | Digital display adjustable self-reset type overvoltage and undervoltage protector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320892130.1U CN203774749U (en) | 2013-12-31 | 2013-12-31 | Digital display adjustable self-reset type overvoltage and undervoltage protector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203774749U true CN203774749U (en) | 2014-08-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320892130.1U Expired - Fee Related CN203774749U (en) | 2013-12-31 | 2013-12-31 | Digital display adjustable self-reset type overvoltage and undervoltage protector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203774749U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103762549A (en) * | 2013-12-31 | 2014-04-30 | 安徽鑫龙电器股份有限公司 | Self-reset overvoltage and undervoltage protector |
| CN104505806A (en) * | 2015-01-05 | 2015-04-08 | 浙江奥德克电气科技有限公司 | Self-recovery over-voltage and under-voltage protector |
-
2013
- 2013-12-31 CN CN201320892130.1U patent/CN203774749U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103762549A (en) * | 2013-12-31 | 2014-04-30 | 安徽鑫龙电器股份有限公司 | Self-reset overvoltage and undervoltage protector |
| CN104505806A (en) * | 2015-01-05 | 2015-04-08 | 浙江奥德克电气科技有限公司 | Self-recovery over-voltage and under-voltage protector |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140813 Termination date: 20161231 |