CN108471104A - A kind of Self-recover overvoltage-undervoltage protector and its circuit - Google Patents
A kind of Self-recover overvoltage-undervoltage protector and its circuit Download PDFInfo
- Publication number
- CN108471104A CN108471104A CN201810535606.3A CN201810535606A CN108471104A CN 108471104 A CN108471104 A CN 108471104A CN 201810535606 A CN201810535606 A CN 201810535606A CN 108471104 A CN108471104 A CN 108471104A
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- China
- Prior art keywords
- circuit
- self
- resistance
- relay
- undervoltage
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- Pending
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- 230000001012 protector Effects 0.000 title claims abstract description 26
- 230000003750 conditioning effect Effects 0.000 claims abstract description 17
- 239000000203 mixture Substances 0.000 claims description 10
- 230000009467 reduction Effects 0.000 claims description 4
- 230000004224 protection Effects 0.000 abstract description 5
- 238000011084 recovery Methods 0.000 abstract description 5
- 230000006837 decompression Effects 0.000 abstract description 3
- 238000001514 detection method Methods 0.000 abstract description 3
- 238000009434 installation Methods 0.000 description 9
- 230000005611 electricity Effects 0.000 description 8
- 238000010586 diagram Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 238000010923 batch production Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/20—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to excess voltage
- H02H3/207—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to excess voltage also responsive to under-voltage
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H1/00—Details of emergency protective circuit arrangements
- H02H1/0007—Details of emergency protective circuit arrangements concerning the detecting means
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/24—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to undervoltage or no-voltage
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/24—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to undervoltage or no-voltage
- H02H3/253—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to undervoltage or no-voltage for multiphase applications, e.g. phase interruption
Landscapes
- Emergency Protection Circuit Devices (AREA)
Abstract
The present invention relates to self-recovering type overvoltage/undervoltage protection technical field of electric appliances more particularly to a kind of Self-recover overvoltage-undervoltage protectors and its circuit.The circuit includes power circuit, voltage signal conditioning circuit, MCU working power circuits, microcontroller, relay drive circuit, circuit, operation interface circuit and relay input circuit needed for microcontroller；This relay input circuit and relay drive circuit provided by the invention are used cooperatively, and product is not required to turn when realization " outlet under upper incoming line " that can be easily and effectively and " outlet on lower inlet wire " are installed, while zero curve and firewire are in the same position.Simultaneously; this Self-recover overvoltage-undervoltage protector circuit provided by the invention is in order to improve the accuracy of detection of voltage signal; using it is simple, conveniently, effective halfwave rectifier and resistance decompression voltage signal conditioning circuit design; effectively solving traditional approach uses operational amplifier to form hysteresis loop comparator, the consistent poor problem of overvoltage/undervoltage recovery value for core.
Description
Technical field
The present invention relates to self-recovering type overvoltage/undervoltage protection technical field of electric appliances more particularly to a kind of protections of Self-recover overvoltage-undervoltage
Device and its circuit.
Background technology
The mounting means of self-recovering type overvoltage/undervoltage protection electric appliance is divided into " outlet under upper incoming line " or " outlet on lower inlet wire " two
Kind mounting means.But traditional self-recovering type overvoltage-undervoltage protector is to realize " outlet under upper incoming line " or " outlet on lower inlet wire " installation
When mode, product needs turn installation, as shown in Figure 1.When " outlet under upper incoming line " is installed, the zero curve of product is in the left side, firewire
On the right；When " outlet on lower inlet wire " is installed, product must turn installation, and zero curve is on the right, firewire is on the left side.It cannot achieve
" outlet under upper incoming line " and " outlet on lower inlet wire " install when, product without turn with the zero curve of two kinds of mounting means the left side,
Firewire on the right, is unified in the same position.Wiring is complicated and unsightly when its defect is product installation.Its voltage signal simultaneously
It is that the comparator with hysteretic characteristic that core forms realizes overvoltage/undervoltage that modulate circuit, which is generally used with operational amplifier (LM224),
It measures and faulty action preventing judges.Its defect：The consistency of overvoltage/undervoltage recovery value is poor, and batch production cannot meet standard JB/T 12762
《Self-recovering type overvoltage-undervoltage protector》The requirement of overvoltage/undervoltage recovery value；Operational amplifier and overvoltage/undervoltage a reference value power supply need simultaneously
Stable working power is provided, could ensure that circuit stability is run；Circuit structure design is complicated, more using electronic component quantity
And it is of high cost.
Invention content
The present invention provides a kind of Self-recover overvoltage-undervoltage protector and its circuits, are protected with solving existing self-recovering type overvoltage/undervoltage
Protect electric appliance there are the problem of.
For this purpose, the present invention provides following technical proposals：A kind of Self-recover overvoltage-undervoltage protector circuit, the circuit include
Power circuit, voltage signal conditioning circuit, MCU working power circuits, microcontroller, relay drive circuit, microcontroller
Circuit needed for MCU, operation interface circuit and relay input circuit；
Circuit, MCU working power circuits, relay drive circuit needed for the microcontroller, voltage signal conditioning electricity
Road is electrically connected with microcontroller respectively；
The MCU working power circuits and voltage signal conditioning circuit are electrically connected with the power circuit respectively；
The relay input circuit is electrically connected with the power circuit and relay drive circuit respectively；
The voltage signal conditioning circuit selects rectifier diode D6 to constitute half-wave finishing circuit, selects resistance R1, R2, R6
Reduction voltage circuit is constituted, capacitance C5 is selected to constitute filter circuit.
Further, the relay drive circuit selects resistance R1 and triode Q1 compositions；The relay input electricity
Routing relay K1 and end of incoming cables selection circuit composition, end of incoming cables selection circuit select resistance R2, R3, and resistance R2, R3 resistance
Value is 0.
Further, the relay drive circuit selects resistance R1 and triode Q1 compositions；The relay input electricity
Routing relay K1 and end of incoming cables selection circuit composition, end of incoming cables selection circuit select switch 1 and switch 2 to form.
A kind of Self-recover overvoltage-undervoltage protector, in the protector setting claim 1-3 any described one is installed
Kind Self-recover overvoltage-undervoltage protector circuit.
Further, at " outlet under upper incoming line ", resistance R2 is installed, and resistance R3 is not installed；In " outlet on lower inlet wire "
When resistance R2 do not install, resistance R3 is installed.
Further, at " outlet under upper incoming line ", switch 1 is connected, and switch 2 disconnects；It is switched at " outlet on lower inlet wire "
1 disconnects, and switch 2 is connected.
Technical solution provided by the invention includes following advantageous effects：This relay input electricity provided by the invention
Road and relay drive circuit are used cooperatively, realization " outlet under upper incoming line " that can be easily and effectively and " outlet on lower inlet wire " installation
When product be not required to turn, while zero curve and firewire are in the same position.Meanwhile this Self-recover overvoltage-undervoltage provided by the invention is protected
Protect device circuit in order to improve the accuracy of detection of voltage signal, using it is simple, conveniently, effective halfwave rectifier and resistance decompression electricity
Signal conditioning circuit design is pressed, traditional approach is effectively solved and operational amplifier (LM224) is used to form hysteresis loop comparator for core,
The consistent poor problem of overvoltage/undervoltage recovery value.
Description of the drawings
In order to illustrate more clearly of technical scheme of the present invention, letter will be made to attached drawing needed in the embodiment below
Singly introduce, it should be apparent that, for those of ordinary skills, without having to pay creative labor,
Other drawings may also be obtained based on these drawings.
Fig. 1 is the mounting means schematic diagram that traditional self-recovering type overvoltage/undervoltage protects electric appliance.
Fig. 2 is a kind of mounting means schematic diagram of Self-recover overvoltage-undervoltage protector provided by the invention.
Fig. 3 is a kind of functional block diagram of Self-recover overvoltage-undervoltage protector circuit provided in an embodiment of the present invention.
Fig. 4 is relay drive circuit provided in an embodiment of the present invention and relay input circuit schematic diagram.
Fig. 5 is voltage signal conditioning circuit schematic diagram provided in an embodiment of the present invention.
Specific implementation mode
The drawings herein are incorporated into the specification and forms part of this specification, and shows the implementation for meeting the present invention
Example, and be used to explain the principle of the present invention together with specification.
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technology description to be briefly described, it should be apparent that, for those of ordinary skill in the art
Speech, without creative efforts, other drawings may also be obtained based on these drawings.
Embodiment one
As shown in figure 3, a kind of Self-recover overvoltage-undervoltage protector circuit, the circuit includes power circuit, voltage signal tune
Manage circuit, MCU working power circuits, microcontroller, relay drive circuit, circuit needed for microcontroller, operation circle
Face circuit and relay input circuit；
Circuit, MCU working power circuits, relay drive circuit needed for the microcontroller, voltage signal conditioning electricity
Road is electrically connected with microcontroller respectively；
The MCU working power circuits and voltage signal conditioning circuit are electrically connected with the power circuit respectively；
The relay input circuit is electrically connected with the power circuit and relay drive circuit respectively；
The voltage signal conditioning circuit selects rectifier diode D6 to constitute half-wave finishing circuit, selects resistance R1, R2, R6
Reduction voltage circuit is constituted, capacitance C5 is selected to constitute filter circuit.
One as the present embodiment technical solution improves greatly, and the relay drive circuit selects resistance R1 and triode Q1
Composition；The relay input circuit is made of relay K1 and end of incoming cables selection circuit, and end of incoming cables selection circuit selects electricity
R2, R3 are hindered, and resistance R2, R3 resistance value is 0.
One as the present embodiment technical solution improves greatly, and the relay drive circuit selects resistance R1 and triode Q1
Composition；The relay input circuit is made of relay K1 and end of incoming cables selection circuit, and selection circuit selection in end of incoming cables is opened
Close 1 and the composition of switch 2.
Specifically, 1 installation site of the switch is the installation site (not shown) of resistance R2.
2 installation site of the switch is the installation site (not shown) of resistance R3.
Embodiment two
As shown in Fig. 2, a kind of Self-recover overvoltage-undervoltage protector, the interior setting of the protector is equipped with claim 1-3 and appoints
A kind of Self-recover overvoltage-undervoltage protector circuit described in one.
One as the present embodiment technical solution improves greatly, and at " outlet under upper incoming line ", resistance R2 is installed, resistance R3
It does not install；At " outlet on lower inlet wire ", resistance R2 is not installed, and resistance R3 is installed.
One as the present embodiment technical solution improves greatly, and at " outlet under upper incoming line ", switch 1 is connected, and switch 2 disconnects；
At " outlet on lower inlet wire ", switch 1 disconnects, and switch 2 is connected.
It cannot achieve " outlet under upper incoming line " in order to solve traditional self-recovering type overvoltage-undervoltage protector and " go out on lower inlet wire
When line " is installed, product is not turned, while the zero curve of product and firewire are the same position the problem of.Relay input circuit is adopted
With the circuit design selected with end of incoming cables, as shown in Figure 4.Relay input circuit and relay drive circuit are used cooperatively, energy
Product is not required to turn when realization " outlet under upper incoming line " and " outlet on lower inlet wire " easily and effectively is installed, while zero curve and firewire
In the same position.Relay drive circuit selects resistance R1 and triode Q1 compositions；Relay input circuit is by relay K1
With end of incoming cables selection circuit form, end of incoming cables selection circuit select resistance R2, R3, and resistance R2, R3 resistance value be 0 (while electricity
Hindering R2, R3 can also use switch to substitute).At " outlet under upper incoming line ", resistance R2 is installed, and resistance R3 is not installed (with switch generation
For when the positions R2 switch connection, the switches of the positions R3 disconnects)；At " outlet on lower inlet wire ", resistance R2 is not installed, resistance R3
It installs and (is disconnected with the switch of the positions R2 when switch in place, the switch connection of the positions R3).
Simultaneously in order to improve the accuracy of detection of voltage signal, using it is simple, conveniently, effective halfwave rectifier and resistance is depressured
Voltage signal conditioning circuit design, as shown in Figure 5.It is whole that its voltage signal conditioning circuit selects rectifier diode D6 to constitute half-wave
Circuit is managed, resistance R1, R2, R6 is selected to constitute reduction voltage circuit, capacitance C5 is selected to constitute filter circuit；As main power voltage signal
It measures, realizes that voltage is shown and over-pressed, under-voltage, decompression and open-phase protection.It effectively solves traditional approach and uses operational amplifier
(LM224) it is that core forms hysteresis loop comparator, the consistent poor problem of overvoltage/undervoltage recovery value.
It should be noted that the relational terms of such as " first " and " second " or the like be used merely to an entity or
Operation is distinguished with another entity or operation, and without necessarily requiring or implying between these entities or operation, there are any
This actual relationship or sequence.Moreover, the terms "include", "comprise" or its any other variant be intended to it is non-exclusive
Property include but also include not having so that article or equipment including a series of elements include not only those elements
The other element being expressly recited, or further include for elements inherent to such a process, method, article, or device.Do not having
There is the element limited by sentence "including a ..." in the case of more limiting, it is not excluded that in the mistake for including the element
There is also other identical elements in journey, method, article or equipment.
The above is only the specific implementation mode of the present invention, is made skilled artisans appreciate that or realizing this hair
It is bright.Various modifications to these embodiments will be apparent to one skilled in the art, as defined herein
General Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, of the invention
It is not intended to be limited to the embodiments shown herein, and is to fit to and the principles and novel features disclosed herein phase one
The widest range caused.
It should be understood that the invention is not limited in the contents for being described above and being shown in the accompanying drawings, and can
To carry out various modifications and change without departing from the scope.The scope of the present invention is limited only by the attached claims.
Claims (6)
1. a kind of Self-recover overvoltage-undervoltage protector circuit, it is characterised in that：The circuit includes power circuit, voltage signal conditioning
Circuit, MCU working power circuits, microcontroller, relay drive circuit, circuit, operation interface needed for microcontroller
Circuit and relay input circuit；
Circuit, MCU working power circuits, relay drive circuit, voltage signal conditioning circuit needed for the microcontroller point
It is not electrically connected with microcontroller；
The MCU working power circuits and voltage signal conditioning circuit are electrically connected with the power circuit respectively；
The relay input circuit is electrically connected with the power circuit and relay drive circuit respectively；
The voltage signal conditioning circuit selects rectifier diode D6 to constitute half-wave finishing circuit, and resistance R1, R2, R6 is selected to constitute
Reduction voltage circuit selects capacitance C5 to constitute filter circuit.
2. a kind of Self-recover overvoltage-undervoltage protector circuit according to claim 1, it is characterised in that：The relay driving
Circuit selects resistance R1 and triode Q1 compositions；The relay input circuit is by relay K1 and end of incoming cables selection circuit group
At end of incoming cables selection circuit selects resistance R2, R3, and resistance R2, R3 resistance value is 0.
3. a kind of Self-recover overvoltage-undervoltage protector circuit according to claim 1, it is characterised in that：The relay driving
Circuit selects resistance R1 and triode Q1 compositions；The relay input circuit is by relay K1 and end of incoming cables selection circuit group
At end of incoming cables selection circuit selects switch 1 and switch 2 to form.
4. a kind of Self-recover overvoltage-undervoltage protector, it is characterised in that：It is any to be equipped with claim 1-3 for setting in the protector
A kind of Self-recover overvoltage-undervoltage protector circuit.
5. a kind of Self-recover overvoltage-undervoltage protector according to claim 4, it is characterised in that：At " outlet under upper incoming line "
Resistance R2 is installed, and resistance R3 is not installed；At " outlet on lower inlet wire ", resistance R2 is not installed, and resistance R3 is installed.
6. a kind of Self-recover overvoltage-undervoltage protector according to claim 4, it is characterised in that：At " outlet under upper incoming line "
Switch 1 is connected, and switch 2 disconnects；At " outlet on lower inlet wire ", switch 1 disconnects, and switch 2 is connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810535606.3A CN108471104A (en) | 2018-05-30 | 2018-05-30 | A kind of Self-recover overvoltage-undervoltage protector and its circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810535606.3A CN108471104A (en) | 2018-05-30 | 2018-05-30 | A kind of Self-recover overvoltage-undervoltage protector and its circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108471104A true CN108471104A (en) | 2018-08-31 |
Family
ID=63261658
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810535606.3A Pending CN108471104A (en) | 2018-05-30 | 2018-05-30 | A kind of Self-recover overvoltage-undervoltage protector and its circuit |
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| Country | Link |
|---|---|
| CN (1) | CN108471104A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111435103A (en) * | 2019-01-15 | 2020-07-21 | 哈尔滨工业大学 | Bolt loosening self-power monitoring system based on piezoelectric vibration thin sheet |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN205509466U (en) * | 2016-03-08 | 2016-08-24 | 浙江天正电气股份有限公司 | Undervoltage protection ware circuit is crossed to self -resuming formula |
| CN107834507A (en) * | 2017-11-27 | 2018-03-23 | 浙江凯发电气有限公司 | A kind of self-recovering type overvoltage-undervoltage protector circuit |
-
2018
- 2018-05-30 CN CN201810535606.3A patent/CN108471104A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN205509466U (en) * | 2016-03-08 | 2016-08-24 | 浙江天正电气股份有限公司 | Undervoltage protection ware circuit is crossed to self -resuming formula |
| CN107834507A (en) * | 2017-11-27 | 2018-03-23 | 浙江凯发电气有限公司 | A kind of self-recovering type overvoltage-undervoltage protector circuit |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111435103A (en) * | 2019-01-15 | 2020-07-21 | 哈尔滨工业大学 | Bolt loosening self-power monitoring system based on piezoelectric vibration thin sheet |
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Application publication date: 20180831 |