CN2110305U - Hall magnetic induction electroic circuit breaker - Google Patents
Hall magnetic induction electroic circuit breaker Download PDFInfo
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- CN2110305U CN2110305U CN 91226609 CN91226609U CN2110305U CN 2110305 U CN2110305 U CN 2110305U CN 91226609 CN91226609 CN 91226609 CN 91226609 U CN91226609 U CN 91226609U CN 2110305 U CN2110305 U CN 2110305U
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- circuit
- circuit breaker
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Abstract
The utility model relates to a Hall magnetic induction electronic circuit breaker, comprising a current sensor (1), an electronic control circuit (2), and a switch for the turning on and turning off of a line. An electromagnetic induction coil and a Hall integrated circuit are used as a current sensor. The utility model can be used for the protection of over current, short pass, under voltage, and no voltage in AC/DC low voltage circuits, which also has easy manufacture and low cost. Besides, the utility model can also have the working state display of visibility and audibility.
Description
The utility model relates to a kind of electronic type automatic circuit breaker, and particularly a kind of magnetic inductive electronic circuit breaker of using Hall element has overcurrent, short disconnected, and the under-voltage defencive function that waits belongs to essential electronic element.
Circuit breaker is widely used in many circuit and equipment as the automatic safety device that can be repeatedly used.
There is following weak point in the circuit breaker of the being seen medium and small current specification of existing market:
The one, volume is big, cost height, machining complexity.
The 2nd, overcurrent protection adopts bimetal leaf thermal deformation action more, and in the occasion that need are protected fast, the sensitivity that seems is not high.
Along with social progress and production development, many local medium and small electric currents that very need, highly sensitive, the circuit breaker of low price replaces the protective device that traditional fuse is made equipment or circuit.
In recent years many data have been introduced many electronic broken circuit protecting equipments, with traditional mechanical chopper relatively, advantage such as it is low, in light weight to have a cost, and volume is little, and the life-span is long has fully shown the advantage of electronic technology.Partly data is as seen for it:
1, high-velocity electrons fuse--" the practical electronics digest " second phase in 1986, P202.(Sichuan)
2, electrical fuse--" the practical electronics digest " fourth phase in 1987, P192.(Sichuan)
3, the safeties of electronic equipment--" the practical electronics digest " fifth phase in 1987, P171.(Sichuan)
4, second of high-velocity electrons circuit breaker--" electronic circuit encyclopedia ", P96.Science Press
5, install overcurrent protection additional to thyristor voltage regulator--" electronics newspaper bound volume in 1985 ", P32.(Sichuan)
6, the additional overcurrent protector of integrated regulated power supply--" Beijing electronics newspaper nineteen ninety bound volume ", P131.
The electronic circuit breaker of above-mentioned data has adopted resistance type current sampling or dry-reed relay to make current sense substantially.But, following a few point defect is arranged still as product:
1, versatility is relatively poor, and the adjustment of rated breaking current is difficulty.
2, when bigger load, the sample resistance itself that is series in the circuit will consume certain power, and easily heating damages.And the making of high-power little resistance resistance is also difficult.
3, dry-reed relay easily produces misoperation in the acute occasion of vibrations.Especially on the vehicles such as car and boat, can not be suitable for.
The purpose of this utility model is: a, make the adjustable transducer of rated breaking current with electromagnetic induction coil and hall ic.The swift electron circuit breaker with overcurrent, short disconnected defencive function of b, composition highly versatile.That c, electronic circuit breaker can be established is under-voltage, o-volt protection and visual and audibility operating state Presentation Function.D, adopt market easily to purchase as far as possible, stable performance, price is lower, is convenient to make the components and parts of maintenance.
The characteristic of hall ic, principle and using method, visible following reference:
1, Hall element--" practicality is controlled automatically " P59.Sichuan science tech publishing house
2, magnetic induction honeywell switch sensor and application thereof--" electronics newspaper bound volume in 1989 " P146.(Sichuan)
3,1986 the 8th phases of the principle of Hall integrated circuit and application--" radio "
4, the principle of Hall integrated circuit and application (continuing)--" radio " 1986 the 9th phases
5,1988 the 12nd phases of the application of Hall switch IC--" radio "
So the utility model selects for use hall ic and solenoid as transducer, the one, the transfer characteristic that it is good.The 2nd, load current is bigger.The 3rd, contactless, the place acute in vibrations do not produce misoperation.The 4th, the electromagnetic sensing coil is consumed energy not substantially, and makes easily.The 5th, change sensor coil iron core air-gap scalable rated breaking current.
Fig. 1 is a composition frame chart of the present utility model.1 is the testing circuit that Hall element and sensor coil are formed; 2 is electronic control circuit; 3 is the circuit on-off switch; E is a power supply; R
LBe load; X
1, X
2Be output; X
3, X
4Be input.
Fig. 2 makes reference diagram for the electromagnetic sensing coil.A is an iron-core coil among the figure; B is a coil former; C is fixing Hall element bolt (φ 6); D regulates bolt (φ 6) for the iron core air-gap; E is the fixing working of plastics of Hall element; F is a core section.
The operation principle of electromagnetic sensing coil is: need to detect electric current flowing through coil L, produce corresponding magnetic flux in the air-gap that bolt is formed.When electric current reaches rated value, then the magnetic flux density in the air gap reaches the firing point magnetic induction density B op of hall ic, hall ic conducting.This detection signal is finished the break-make control of circuit rated current through control circuit.
Hall ic is selected for use highly sensitive, as: UGN-3020; Firing point magnetic induction density B op=220GS; Cut-off point magnetic induction density B rp=165GS; Io=25mA; Maximum operating frequency is 100KHZ; Vcc=4.5～24V.
Below with regard to the operation principle of alternating current-direct current Hall magnetic induction electronic circuit breaker, illustrated in conjunction with legend.
One, direct current Hall magnetic induction electronic circuit breaker
1, the computing formula of inductance type sensor coil:
B·L
0＝W·I·μ0
In the formula: the magnetic flux density in the B--iron core air-gap; (* 10
-4GS/
)
L
0--air-gap length; m
The W--coil turn; Circle
I--flows through the electric current of coil; A
μ 0--air permeability; 4 π * 10
-7H/m
The derivation of formula is in this omission.By formula as seen, the linear proportional relation of air gap distance and size of current.So regulate air gap distance, the rated value of scalable breaking current.
2, legend
Fig. 3 is the circuit theory diagrams of dropout type electronic circuit breaker.
Among Fig. 3, D
1Be Hall element; D
2Be time-base circuit; SCR is a unidirectional thyristor; VD is a voltage-stabiliser tube; LED is a luminous tube; J is the release solenoid; C is an electric capacity; L is a sensor coil; FU is a fuse; SA
1Be the release main contacts; SA
2Be the release auxiliary contact; K is a cut off key; E is a DC power supply; R
1-R
5Be resistance; X
1, X
2Be output; X
3, X
4Be input; A is pressure unit (set when supply voltage E is higher than electronic circuit operating voltage Vcc).
The overcurrent of a, Fig. 3, short-circuit protection function
As the release contact SA that closes
2, electronic circuit work.While SA
1Closure is through J, R
5, LED is bright, the expression channel status.
Electric current reaches rated current in L, and magnetic flux reaches Hall integrated circuit firing point magnetic induction density B op, D in the coil air- gap
12,3 end conductings.D
2S hold into electronegative potential, Q output high potential (time-base circuit operation principle and respectively hold the symbol sidenote to see " the practical electronics digest " fourth phase in 1988) triggers the SCR conducting, the J adhesive of switch on, release release is opened circuit.The electronic circuit working power is cut off simultaneously, and LED goes out.
Release SA
1, SA
2Be synchro switch, but SA
2Should first SA
1Closure in case in load short circuits state closed moment, do not set up because of the electronic circuit operating voltage, causes the short circuit current unprotect.
The under-voltage protection function of b, Fig. 3
Many equipment that use storage battery as power supply need storage battery end of a period voltage is protected, to increase the service life.The under-voltage protection principle of Fig. 3 is as follows: D
2VC end be clamped at a burning voltage (should less than electronic circuit operating voltage Vcc 2/3) U by voltage-stabiliser tube VD
DThrough R
1, R
2, R
3Dividing potential drop, make D
2S end a little more than 1/2U
D,, make the S end be lower than 1/2U when supply voltage E reduces to end of a period voltage
D, D
2The output high potential triggers the SCR conducting, the J adhesive, and release discharges and opens circuit.
The setting of C in the circuit can make D
2Energising moment S end is high level, in order to avoid misoperation.
Electronic circuit operating voltage Vcc is advisable with 6～12V, and this is owing to be subjected to D
1, D
2The restriction of operating voltage.E is higher than V at supply voltage
CCThe time, should reduction voltage circuit be set in the A place.
Fuse FU can play second protection when the electronic circuit fault.
Fig. 4 is the circuit theory diagrams of relay system electronic circuit breaker.Do not establish under-voltage protection function.
K among Fig. 4
2Be reset button; D
2Be photoelectrical coupler; J is a relay coil; SA
1Be the relay normally-closed contact; SA
2Be relay normally open contact; V
1Be the reset switch pipe; V
2Be the alarm switch pipe; HA is a buzzer; LED
1Be the channel status luminous tube; LED
2Be the off state luminous tube; The same Fig. 3 of all the other symbol sidenotes.
The operation principle of Fig. 4 is: through J, R
4, LED
1Bright, show channel status.Electric current reaches rated current in L, D
12,3 end conductings.D
2Conducting (the photoelectrical coupler operation principle can be consulted " radio " 1987 12 phases) triggers SCR, J adhesive, LED
1Go out SA
1The normally-closed contact open circuit, line broken circuit.SA
2The normally opened contact closure is passed through R
5, LED
2Bright, show off state.Simultaneously through R
6Make V
2Conducting, the HA audible alarm.Because SA
2Closed K
2But enter operating state.Press K
2, V
1Saturation conduction drops to the SCR both end voltage and keeps below the voltage, and SCR turn-offs.The attract current of J is by V
1Bear.When unclamping K
2, J discharges, SA
1Closure, SA
2Open circuit recovers channel status.K
2Connection can be at R
LFast cut-off circuit during short circuit.
Fig. 5 is the circuit theory diagrams of solid-state relay formula electronic circuit breaker.Has overcurrent, short circuit, under-voltage, o-volt protection function.
Among Fig. 5, SSR is a dc solid-state relay; VD
2Be isolating diode; The same Fig. 3 of all the other symbol sidenotes.
The operation principle of Fig. 5 is: press K
2, through R
7, electronic circuit obtains operating voltage, but VD
2Isolate and do not enter main line.Simultaneously through R
5, R
6, solid-state relay SSR conducting, line fed.Electric current reaches rated current in L, D
1Conducting, D
2The output high level triggers the SCR conducting.The electric current of light-emitting component is by bypass among the SSR, and solid-state relay opens circuit, and the electronic circuit operating voltage also is cut off.
SSR light-emitting component no current during decompression, solid-state relay SSR opens circuit.
VD
2Can prevent R
LPress K during short circuit
2, electronic circuit is not set up and the SSR conducting in operating voltage, cause short circuit current unprotect state.
Fig. 6 is multipath solid-state relay system electronic circuit breaker circuit theory diagrams.Can be used for needing the electronic instrument, equipment of multichannel protection etc.
D among Fig. 6
1～D
3Be Hall element; D
4～D
6Be inverter; D
7Be septuple darlington transistor array (as MC1413); LED
1～LED
3Be the variable color luminous tube; RD is a red pipe among the LED, and GN is a LED medium green colour tube; VD
1～VD
3Be the diode OR gate circuit; VD
4～VD
6Be isolating diode; K
1～K
3Be reset button; K
4～K
6Be cut off key; R
L1～R
L3Be load; FU
1～FU
3Be fuse; L
1～L
3Be sensor coil; SSR
1～SSR
3Be dc solid-state relay; E is a power supply; R
1～R
15Be resistance; HA is a buzzer; X
1～X
3Be output; X
4, X
5Be input.
Fig. 6 circuit working principle is with X
1One the tunnel is that example is illustrated: press K
1, electric current is through R
7SSR feeds
1Middle light-emitting component, VD
4Isolate and do not enter main line SSR
1Conducting is through R
10, VD
4, SSR
1Self-locking keeps path.Simultaneously through R
13, make LED
1Middle GN is bright.The pipe of GN is pressed the D that feeds
7IN
2, OUT then
2Conducting makes by R
4LED feeds
1The current bypass short circuit of middle RD pipe, RD goes out.Represent channel status this moment.
Electric current in L reaches rated current, D
1Conducting, D
4The output high level is given D
7IN
1, OUT
1Conducting, SSR
1The electric current of luminescent device is by D
7Shunting is cut off, SSR
1Open circuit.LED
1Middle GN manages no current and goes out.And D
7IN
2Place's low level, OUT
2End, bypass is eliminated, through R
4, LED
1Middle RD is bright.Simultaneously because D
4The output high level is through diode OR gate circuit, D
7IN
7Become high potential, OUT
7Conducting, electronic buzzer sends audible alarm, shows off state.
X
2And X
3Two-way operation principle and X
1Identical, repeat no more.
Two, exchange Hall magnetic induction electronic circuit breaker
1, the computing formula of inductance type sensor coil:
B·L
0＝
·W·I·μ0
Symbol and unit are identical with the direct current computing formula in the formula.Can consult the note of direct current formula.
2, legend
Fig. 7 is for exchanging dropout type electronic circuit breaker circuit theory diagrams.Have overcurrent, short circuit, under-voltage protection function, be applicable to 220 volts of following single phase alternating current power supplies.
SA among Fig. 7
1, SA
2Be release main contacts, SA
2Be the release auxiliary contact; B is the electronic circuit power transformer; U is a bridge rectifier; C
1Be filter capacitor; The same Fig. 3 of all the other symbol sidenotes.
The operation principle of Fig. 7 circuit is identical with Fig. 3, and just the power supply of electronic circuit is by transformer B, rectifier U, filter capacitor C
1After the AC power conversion, provide.Release contact SA equally, synchronously
2Should first SA
1, SA
3Closure is in the hope of setting up the electronic circuit operating voltage earlier.
Cell winding is owing to having adopted wire frame, so can obtain good insulation.
Fig. 8 is a kind of ac solid relay formula electronic circuit breaker circuit theory diagrams.Have overcurrent, short circuit, under-voltage, o-volt protection function.
Among Fig. 8, SSR
1Be the circuit ac solid relay; SSR
2Be the electronic circuit ac solid relay; All the other symbols are ditto schemed.
The operation principle of Fig. 8 is: press K
2, transformer B energising, through rectifier U, filter capacitor C
1, the electronic circuit direct-current working volts are provided.Through R
5, R
6, SSR
2Conducting and self-locking.Simultaneously through R
5, R
7, SSR
1Conducting, feed is given load R
L
Electric current reaches rated current in L, D
1, D
2Trigger the SCR conducting, solid-state relay SSR
1, SSR
2The electric current of light-emitting component is cut off, SSR
1, SSR
2Open circuit.Under-voltage and same Fig. 5 of decompression operation principle.
Use hall ic and inductance type sensor coil, can be easily and various digital circuits, interface circuit is formed the electronic circuit breaker of practicality.Overall styling also can be made dissimilar.As exchange class and can adopt commercially available earth leakage protector formula, the direct current class adopts female type.
Because Hall magnetic induction electronic circuit breaker cost is low, easy to make, is widely used, and helps forming series of products.As a kind of " senior " fuse, broad market prospect.As the broadcasting station, not only can implement protection, but also can be contained in the program circuit electronic equipment, overcurrent short-circuit protection (the hall ic maximum operating frequency is 100KHZ) is carried out in each road output.And each electrical equipment repair shop can protect the overcurrent in the electrical maintenance, short trouble.In the vehicles such as car and boat, the general insurance silk can be upgraded.Can form Power Limitation type security system with common earth leakage protector.
Therefore, after the utility model is put on market, have favorable economic benefit and social effect.
Claims (3)
1, Hall magnetic induction electronic circuit breaker is made up of current sensor (1), electronic control circuit (2), circuit on-off switch (3).Current sensor (1) is sent detection signal when overcurrent, short circuit, through electronic control circuit (2) control circuit on-off switch (3), it is characterized in that current sensor is electromagnetic induction coil and hall ic.
2, Hall magnetic induction electronic circuit breaker as claimed in claim 1 is characterized in that electronic control circuit (2) is a digital circuit, interface circuit and thyristor.
3, Hall magnetic as claimed in claim 1 or 2 is answered electronic circuit breaker, it is characterized in that circuit on-off switch (3) can be release, relay or solid-state relay.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 91226609 CN2110305U (en) | 1991-10-10 | 1991-10-10 | Hall magnetic induction electroic circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 91226609 CN2110305U (en) | 1991-10-10 | 1991-10-10 | Hall magnetic induction electroic circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2110305U true CN2110305U (en) | 1992-07-15 |
Family
ID=4932654
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 91226609 Granted CN2110305U (en) | 1991-10-10 | 1991-10-10 | Hall magnetic induction electroic circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2110305U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105655968A (en) * | 2016-03-25 | 2016-06-08 | 张恒雄 | Electrical device for direct-current overcurrent short-circuit protection |
| CN107508253A (en) * | 2017-09-02 | 2017-12-22 | 宁波恒特尔电子系统技术有限公司 | A kind of short circuit over-current protection circuit of direct current |
| CN109185995A (en) * | 2018-10-09 | 2019-01-11 | 苏州欧普照明有限公司 | A kind of sterilization air duct |
-
1991
- 1991-10-10 CN CN 91226609 patent/CN2110305U/en active Granted
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105655968A (en) * | 2016-03-25 | 2016-06-08 | 张恒雄 | Electrical device for direct-current overcurrent short-circuit protection |
| CN107508253A (en) * | 2017-09-02 | 2017-12-22 | 宁波恒特尔电子系统技术有限公司 | A kind of short circuit over-current protection circuit of direct current |
| CN109185995A (en) * | 2018-10-09 | 2019-01-11 | 苏州欧普照明有限公司 | A kind of sterilization air duct |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |