CN101316038A - Control circuit of multifunctional protection socket - Google Patents
Control circuit of multifunctional protection socket Download PDFInfo
- Publication number
- CN101316038A CN101316038A CNA2008100222868A CN200810022286A CN101316038A CN 101316038 A CN101316038 A CN 101316038A CN A2008100222868 A CNA2008100222868 A CN A2008100222868A CN 200810022286 A CN200810022286 A CN 200810022286A CN 101316038 A CN101316038 A CN 101316038A
- Authority
- CN
- China
- Prior art keywords
- circuit
- control circuit
- signal processing
- protection
- processing chip
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Landscapes
- Breakers (AREA)
- Emergency Protection Circuit Devices (AREA)
Abstract
The invention discloses a control circuit for a multi-functional protection socket, comprising a signal processing chip IC, a zero sequence current transformer L1, a controllable silicon VS1, a releasing coil L5, a rectifier circuit, a testing circuit, an indicator circuit, a piezoresistor RV1 and other resistor-capacitor unit. The control circuit is characterized in that the control circuit also comprises an over-current transformer L2, a recovery coil L4, a controllable silicon VS2, a short circuit coil L3, a temperature switch ST and a piezoresistor RV2. As the invention has the functions of electric leakage protection, over-load protection, over-heat protection, short circuit protection, over-voltage protection, anti-thunder, etc., the control circuit has wider protection range, and can protect the lives and the possessions of people more effectively and safely.
Description
Technical field
The present invention relates to a kind of control circuit with multifunctional protection sockets such as overload protection, overvoltage protection, overtemperature protection, earth leakage protective, short-circuit protection and lightning protection.
Background technology
The control circuit of existing in the market protection socket, its defective is: function singleness, protection range is narrow, operating current is big, sensitivity is low, unstable properties.And overload protection still adopts double-metal sheet type, and break-time is influenced by environmental temperature, and the disjunction delay time is longer, deenergization rapidly, and special in the small household appliance of rated current below 1A, its defective is more obvious.And earth leakage protective operating current still is 30～100mA, greater than the human body electric current 10mA that is perfectly safe.
Summary of the invention
The technical scheme that the present invention solves above-mentioned prior art defective is: the control circuit that a kind of multiple functional, protection range is wide, operating current is little, highly sensitive, stable and reliable for performance multifunctional protection socket is provided.
In order to realize technique scheme; the invention provides a kind of control circuit of multifunctional protection socket, comprise signal processing chip IC, zero-sequence transformer L1, controllable silicon VS1, tripping coil L5, rectification circuit, test circuit, indicating circuit, piezo-resistance RV1 and other Resistor-Capacitor Unit.It is characterized in that: described control circuit also comprises overcurrent instrument transformer L2, resetting coil L4, controllable silicon VS2, short-circuited coil L3, temperature switch ST and piezo-resistance RV2.
Described zero-sequence transformer L1, be used for the leakage current signal that testing circuit occurs, one end of its secondary winding is connected to 3 pin of described signal processing chip IC and the positive pole of voltage stabilizing didoe D5, the other end links to each other with the positive pole of partiting dc capacitor C3, the negative pole of voltage stabilizing didoe D5 and the end of divider resistance R6, the negative pole of described partiting dc capacitor C3 is connected to 1 pin of signal processing chip IC and the end of build-out resistor R5, and the other end of described build-out resistor R5 is connected to 7 pin of signal processing chip IC.Described voltage stabilizing didoe D5 protects the secondary winding of described zero-sequence transformer L1 and overcurrent instrument transformer L2 not burnt out.
The negative electrode of described controllable silicon VS1 is connected 4 pin and 5 pin of signal processing chip IC respectively with the control utmost point, and anode is connected and met power supply phase line L behind the described tripping coil L5.
Be provided with anti-interference capacitor C2 between 5 pin of described signal processing chip IC and 4 pin.This anti-interference capacitor adopts electrochemical capacitor, and after producing a triggering signal voltage between 4 pin of signal processing chip IC and 5 pin, under the effect of anti-interference capacitor C2, the voltage at electric capacity two ends rises gradually.If this signal voltage is the disturbing pulse signal, then before reaching the trigger voltage of controllable silicon VS1 as yet, the voltage at electric capacity two ends just do not disappeared, thereby the controllable silicon VS1 conducting that can not be triggered, can avoid misoperation.
Described rectification circuit is made up of rectifier diode D1～D4, IC provides normal working voltage for signal processing chip, its input is connected respectively on phase line of power L and the center line N, output plus terminal connects 6 pin that are connected to signal processing chip IC behind the current-limiting resistance R1, and the output negative terminal is connected to 4 pin of signal processing chip IC.Also be provided with a filter capacitor C1 between 6 pin of described signal processing chip IC and 4 pin, make the operating voltage of signal processing chip IC more stable.
Described test circuit, whether working properly, be composed in series by test resistance R3 and Test Switchboard S2 if being used to detect the present invention.The end of described test resistance R3 is connected on the L polar curve of zero-sequence transformer L1 front, and the other end links to each other with the end of described Test Switchboard S2, and the other end of Test Switchboard S2 is connected on the N polar curve of load end of zero-sequence transformer L1 back.
Described indicating circuit is used to indicate load end whether voltage is arranged, and is composed in series by current-limiting resistance R7 and LED.The end of described current-limiting resistance R7 links to each other with the N polar curve of load end, and the other end links to each other with an end of described LED, and the other end of LED links to each other with the L polar curve of load end.
Described piezo-resistance RV1 is connected in parallel on the power end of described rectification circuit, guarantee signal processing chip IC and on every side Resistor-Capacitor Unit in overvoltage or there is thunderstorm hour not burnt out.
Described overcurrent instrument transformer L2 is used for the overcurrent signal that testing circuit occurs, and an end of its secondary winding is connected to 3 pin of signal processing chip IC, and the other end links to each other with 1 pin of signal processing chip IC with partiting dc capacitor C3 by divider resistance R6.
The end of described resetting coil L4 links to each other with the phase line L of power end, and the other end links to each other with the anode of described controllable silicon VS2; The negative electrode of described controllable silicon VS2 links to each other with the negative pole of described rectification circuit, and the control utmost point links to each other with the end of divider resistance R4, the negative pole of voltage stabilizing didoe D7; The other end of described divider resistance R4 links to each other with the negative pole of rectification circuit; The positive pole of described voltage stabilizing didoe D7 links to each other with the end of reset switch S1, the other end of described reset switch S1 links to each other with the positive pole of voltage stabilizing didoe D6, the negative pole of described voltage stabilizing didoe D6 links to each other with the end of divider resistance R2, the positive pole of triggering capacitor C 4, and the other end of described divider resistance R2 links to each other with the end of divider resistance R1, the positive pole of filter capacitor C1,6 pin of signal processing chip IC; The negative pole of described triggering capacitor C 4 links to each other with the negative pole of rectification circuit.
Described short-circuited coil L3 is connected on the phase line L of main line power end, is used for the short-circuit current that testing circuit occurs, and plays the short-circuit protection effect.
Described temperature switch ST and piezo-resistance RV2 are connected in parallel on the two ends of Test Switchboard S2.When normal the and Test Switchboard S2 of supply voltage disconnected, temperature switch ST and piezo-resistance RV2 were high-impedance state; When occurring overheated in the circuit or ambient temperature when too high, temperature switch ST closure, being equivalent to Test Switchboard S2 connects, it is the test circuit conducting, the electric current that then passes the phase line L of zero-sequence transformer L1 and center line N is just uneven, the secondary winding of zero-sequence transformer L1 will induce faint voltage signal, amplify through signal processing chip IC, relatively, upset is to be exported by 5 pin behind the high level, trigger controllable silicon VS1 conducting, also conducting of tripping coil L5, iron core in tripping coil L5 and its axle center hole just produces electromagnetic force, makes the tripping mechanism action, drives main switch K disjunction, deenergization; When supply voltage is higher than setting value or surge voltage is arranged and thunderstorm hour, piezo-resistance RV2 moment conducting, then also conducting of test circuit, the iron core in tripping coil L5 and its axle center hole just produces electromagnetic force, make the tripping mechanism action, drive main switch K disjunction, deenergization.
Because the present invention has adopted zero-sequence transformer L1, overcurrent instrument transformer L2, temperature switch ST, short-circuited coil L3 and piezo-resistance RV2 simultaneously; therefore, the present invention has functions such as earth leakage protective, overload protection, overtemperature protection, short-circuit protection, overvoltage protection and lightning protection simultaneously.
Description of drawings
The invention will be further described below in conjunction with drawings and Examples.
Accompanying drawing is a schematic diagram of the present invention.
Embodiment
With reference to bowing figure, the present invention includes signal processing chip IC, zero-sequence transformer L1, controllable silicon VS1, tripping coil L5, rectification circuit, test circuit, indicating circuit, piezo-resistance RV1 and other Resistor-Capacitor Unit.It is characterized in that: the present invention also comprises overcurrent instrument transformer L2, resetting coil L4, controllable silicon VS2, short-circuited coil L3, temperature switch ST and piezo-resistance RV2.
The FM2145 type earth leakage protective device special chip that described signal processing chip IC adopts Shanghai Fudan Microelectronics Co., Ltd to produce.
One end of the secondary winding of described zero-sequence transformer L1 is connected to 3 pin of signal processing chip IC and the positive pole of voltage stabilizing didoe D5, the other end links to each other with the positive pole of partiting dc capacitor C3, the negative pole of voltage stabilizing didoe D5 and the end of divider resistance R6, the negative pole of described partiting dc capacitor C3 is connected to 1 pin of signal processing chip IC and the end of build-out resistor R5, and the other end of described build-out resistor R5 is connected to 7 pin of signal processing chip IC.Described voltage stabilizing didoe D5 protects the secondary winding of described zero-sequence transformer L1 and overcurrent instrument transformer L2 not burnt out.
The negative electrode of described controllable silicon VS1 is connected 4 pin and 5 pin of signal processing chip IC respectively with the control utmost point, and anode is connected and met power supply phase line L behind the described tripping coil L5.
Be provided with anti-interference capacitor C2 between 5 pin of described signal processing chip IC and 4 pin.
Described rectification circuit is made up of rectifier diode D1～D4, for described signal processing chip IC provides normal working voltage, its input is connected respectively on phase line of power L and the center line N, output plus terminal connects 6 pin that are connected to signal processing chip IC behind the current-limiting resistance R1, and the output negative terminal is connected to 4 pin of signal processing chip IC.Also be provided with a filter capacitor C1 between 6 pin of described signal processing chip IC and 4 pin, make the operating voltage of signal processing chip IC more stable.
Described test circuit is composed in series by test resistance R3 and Test Switchboard S2.The end of described test resistance R3 is connected on the L polar curve of zero-sequence transformer L1 front, and the other end links to each other with the end of described Test Switchboard S2, and the other end of Test Switchboard S2 is connected on the N polar curve of load end of zero-sequence transformer L1 back.
Described indicating circuit is composed in series by current-limiting resistance R7 and LED.The end of described current-limiting resistance R7 links to each other with the N polar curve of load end, and the other end links to each other with an end of LED, and the other end of LED links to each other with the L polar curve of load end.
Described piezo-resistance RV1 is connected in parallel on the power end of described rectification circuit, guarantee signal processing chip IC and on every side Resistor-Capacitor Unit in overvoltage or there is thunderstorm hour not burnt out.
One end of the secondary winding of described overcurrent instrument transformer L2 is connected to 3 pin of signal processing chip IC, and the other end links to each other with 1 pin of signal processing chip IC with partiting dc capacitor C3 by divider resistance R6.
The end of described resetting coil L4 links to each other with the phase line L of power end, and the other end links to each other with the anode of described controllable silicon VS2; The negative electrode of described controllable silicon VS2 links to each other with the negative pole of rectification circuit, and the control utmost point links to each other with the end of divider resistance R4, the negative pole of voltage stabilizing didoe D7; The other end of described divider resistance R4 links to each other with the negative pole of rectification circuit; The positive pole of described voltage stabilizing didoe D7 links to each other with the end of reset switch S1, the other end of described reset switch S1 links to each other with the positive pole of voltage stabilizing didoe D6, the negative pole of described voltage stabilizing didoe D6 links to each other with the end of divider resistance R2, the positive pole of triggering capacitor C 4, and the other end of described divider resistance R2 links to each other with the end of divider resistance R1, the positive pole of filter capacitor C1,6 pin of signal processing chip IC; The negative pole of described triggering capacitor C 4 links to each other with the negative pole of rectification circuit.
Described short-circuited coil L3 is connected on the phase line L of main line power end, plays the short-circuit protection effect.
Described temperature switch ST and piezo-resistance RV2 are connected in parallel on the two ends of Test Switchboard S2.Temperature signal in the described temperature switch ST testing circuit plays superheat protecting function; Overvoltage signal in the described piezo-resistance RV2 testing circuit plays the overvoltage protection effect.
Operation principle of the present invention is as follows:
One, energized:
Under normal circumstances, the positive pole of rectification circuit is given and is triggered capacitor C 4 chargings behind current-limiting resistance R1, R2.When reset switch S1 connects, trigger stored electric charge in the capacitor C 4, behind voltage stabilizing didoe D6, D7, flow to the control utmost point of controllable silicon VS2, trigger controllable silicon VS2, make electric current pass through resetting coil L4, iron core in resetting coil L4 and its axle center hole just produces electromagnetic force, makes the tripping mechanism action, drives main switch K closure, energized.
Two, earth leakage protective:
When electric leakage being arranged in the circuit loop or has the people to get an electric shock, the secondary winding of zero-sequence transformer L1 will induce faint electric leakage signal voltage, this signal voltage is delivered to the input pin 1,3 of signal processing chip IC by partiting dc capacitor C3, amplify, compare, overturn and export by 5 pin through signal processing chip IC for behind the high level, trigger controllable silicon VS1 conducting, make electric current pass through tripping coil L5, iron core in tripping coil L5 and its axle center hole just produces electromagnetic force, make the tripping mechanism action, drive main switch K disjunction, deenergization.
Three, overcurrent protection:
When the load end of circuit overload current occurs or wire insulation is aging causes short circuit or power consumption equipment that fault is arranged; when causing the load current increase and reaching setting value; the secondary winding of overcurrent instrument transformer L2 will induce faint signal voltage; this signal voltage is delivered to the input pin 1,3 of control chip IC by divider resistance R6, partiting dc capacitor C3; the same with the earth leakage protective course of work, main switch K disjunction, deenergization.
Four, analog leakance test:
When Test Switchboard S2 connects; the test circuit conducting, the current value that passes the phase line L of zero-sequence transformer L1 and center line N is just unequal, will induce faint voltage signal on the secondary winding of zero-sequence transformer L1; the same with the earth leakage protective course of work, main switch K disjunction, deenergization.
Five, overtemperature protection:
When occurring overheated in the circuit or ambient temperature when too high, temperature switch ST closure, the test circuit conducting, the same with the simulation leak(age) test course of work, main switch K disjunction, deenergization.
Six, overvoltage protection:
When supply voltage is higher than setting value or meets with surge voltage and thunderstorm hour, piezo-resistance RV2 becomes conducting state from high-impedance state moment, and the test circuit conducting is the same with the simulation leak(age) test course of work, main switch K disjunction, deenergization.
Seven, short-circuit protection:
When short trouble appearred in the load end of circuit, short circuit current was by short-circuited coil L3, and the electromagnetic force of the iron core moment generation in short-circuited coil L3 and its axle center hole makes the tripping mechanism action, drives main switch K disjunction, deenergization.
Claims (5)
1, a kind of control circuit of multifunctional protection socket comprises signal processing chip IC, zero-sequence transformer L1, controllable silicon VS1, tripping coil L5, rectification circuit, test circuit, indicating circuit, piezo-resistance RV1 and other Resistor-Capacitor Unit.It is characterized in that:
Described control circuit also comprises overcurrent instrument transformer L2, resetting coil L4, controllable silicon VS2, short-circuited coil L3, temperature switch ST and piezo-resistance RV2.
2, control circuit as claimed in claim 1, it is characterized in that an end of the secondary winding of described overcurrent instrument transformer L2 is connected to 3 pin of signal processing chip IC, the other end links to each other with 1 pin of signal processing chip IC with partiting dc capacitor C3 by divider resistance R6.
3, control circuit as claimed in claim 1 is characterized in that the end of described resetting coil L4 links to each other with the phase line L of power end, and the other end links to each other with the anode of described controllable silicon VS2.
4, control circuit as claimed in claim 1 is characterized in that described short-circuited coil L3 is connected on the phase line L of main line power end.
5, control circuit as claimed in claim 1 is characterized in that described temperature switch ST and piezo-resistance RV2 are connected in parallel on the two ends of Test Switchboard S2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100222868A CN101316038A (en) | 2008-07-21 | 2008-07-21 | Control circuit of multifunctional protection socket |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100222868A CN101316038A (en) | 2008-07-21 | 2008-07-21 | Control circuit of multifunctional protection socket |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101316038A true CN101316038A (en) | 2008-12-03 |
Family
ID=40106919
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2008100222868A Pending CN101316038A (en) | 2008-07-21 | 2008-07-21 | Control circuit of multifunctional protection socket |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101316038A (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103001173A (en) * | 2012-12-13 | 2013-03-27 | 福一开电气有限公司 | Cascade protection circuit for extension socket |
| WO2014101272A1 (en) * | 2012-12-31 | 2014-07-03 | Ge Jianyou | Extension socket with fully-versatile one-to-one protections |
| WO2014186926A1 (en) * | 2013-05-23 | 2014-11-27 | Ge Jianyou | Power leakage warning and protection circuit |
| CN104966953A (en) * | 2015-06-29 | 2015-10-07 | 胡靖� | Multifunctional safety socket set |
| CN106785707A (en) * | 2016-12-28 | 2017-05-31 | 重庆金鑫科技产业发展有限公司 | A kind of smart jack control system and smart jack |
| CN108011350A (en) * | 2017-12-29 | 2018-05-08 | 烟台欣飞智能***有限公司 | A kind of mobile phone charging head anti-electric shock apparatus, charger, wall socket and insert row |
| CN110071402A (en) * | 2018-01-24 | 2019-07-30 | 旺玖科技股份有限公司 | The energy saver of automatic detection standby current |
| CN110392642A (en) * | 2017-02-15 | 2019-10-29 | 韦巴斯托充电***公司 | The heat management of electric vehicle coupler contact |
| CN110391554A (en) * | 2018-04-23 | 2019-10-29 | 金一凡 | A kind of intelligent socket that can monitor contact impedance |
-
2008
- 2008-07-21 CN CNA2008100222868A patent/CN101316038A/en active Pending
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103001173A (en) * | 2012-12-13 | 2013-03-27 | 福一开电气有限公司 | Cascade protection circuit for extension socket |
| WO2014101272A1 (en) * | 2012-12-31 | 2014-07-03 | Ge Jianyou | Extension socket with fully-versatile one-to-one protections |
| WO2014186926A1 (en) * | 2013-05-23 | 2014-11-27 | Ge Jianyou | Power leakage warning and protection circuit |
| GB2527919A (en) * | 2013-05-23 | 2016-01-06 | Jianyou Ge | Power leakage warning and protection circuit |
| GB2527919B (en) * | 2013-05-23 | 2020-04-01 | Ge Jianyou | Electricity leakage warning and protection circuit |
| CN104966953A (en) * | 2015-06-29 | 2015-10-07 | 胡靖� | Multifunctional safety socket set |
| CN106785707A (en) * | 2016-12-28 | 2017-05-31 | 重庆金鑫科技产业发展有限公司 | A kind of smart jack control system and smart jack |
| CN110392642A (en) * | 2017-02-15 | 2019-10-29 | 韦巴斯托充电***公司 | The heat management of electric vehicle coupler contact |
| CN108011350A (en) * | 2017-12-29 | 2018-05-08 | 烟台欣飞智能***有限公司 | A kind of mobile phone charging head anti-electric shock apparatus, charger, wall socket and insert row |
| CN110071402A (en) * | 2018-01-24 | 2019-07-30 | 旺玖科技股份有限公司 | The energy saver of automatic detection standby current |
| CN110071402B (en) * | 2018-01-24 | 2022-01-28 | 旺玖科技股份有限公司 | Energy-saving device for automatically detecting standby current |
| CN110391554A (en) * | 2018-04-23 | 2019-10-29 | 金一凡 | A kind of intelligent socket that can monitor contact impedance |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101316038A (en) | Control circuit of multifunctional protection socket | |
| US9219360B2 (en) | Safe quick disconnect leakage protector | |
| CN203722205U (en) | Overvoltage and electric leakage protection circuit | |
| CN100517896C (en) | Control circuit of ground fault circuit breaker | |
| CN201656760U (en) | Surge-prevention soft starting circuit | |
| CN210724199U (en) | Direct current dual input power surge suppression circuit | |
| CN101976815B (en) | Loaded multifunctional protection circuit | |
| CN201194327Y (en) | Leakage detecting protection circuit | |
| CN207677425U (en) | Overcurrent, short-circuit protection | |
| CN202210598U (en) | Dual anti-creeping socket | |
| CN202159853U (en) | Intelligent socket | |
| CN201260066Y (en) | Control circuit for multifunctional protection socket | |
| CN100501897C (en) | Flameproof protection switch | |
| CN101964512A (en) | Electric leakage protector with overvoltage protective device | |
| CN102074930B (en) | Electric leakage detection protective circuit | |
| CN201378730Y (en) | Power circuit breaker protective circuit | |
| CN103794425B (en) | Earth leakage protective device | |
| CN201422011Y (en) | Leakage-detecting protective circuit | |
| CN104953537A (en) | Overload protection switching device | |
| CN205195233U (en) | Power leakage protector | |
| CN201025650Y (en) | Multi-function fireproof overload protection jack | |
| CN212459956U (en) | Silicon chain protection electronic switch | |
| CN212723221U (en) | Silicon chain protection electronic switch detection system | |
| CN203193242U (en) | Over-voltage time-relay protector | |
| CN201773791U (en) | IC card electric meter circuit breaker |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20081203 |