CN107146739A - Electromagnetic relay low level self-locking control circuit - Google Patents
Electromagnetic relay low level self-locking control circuit Download PDFInfo
- Publication number
- CN107146739A CN107146739A CN201710405700.2A CN201710405700A CN107146739A CN 107146739 A CN107146739 A CN 107146739A CN 201710405700 A CN201710405700 A CN 201710405700A CN 107146739 A CN107146739 A CN 107146739A
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- electromagnetic relay
- contact
- low level
- coil
- divider resistance
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- 230000002159 abnormal effect Effects 0.000 abstract description 6
- 230000001052 transient effect Effects 0.000 abstract description 3
- 239000000853 adhesive Substances 0.000 description 4
- 230000001070 adhesive effect Effects 0.000 description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000005352 galvanomagnetic phenomena Effects 0.000 description 2
- 230000001960 triggered effect Effects 0.000 description 2
- 235000018734 Sambucus australis Nutrition 0.000 description 1
- 244000180577 Sambucus australis Species 0.000 description 1
- 230000003750 conditioning effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- OGFXBIXJCWAUCH-UHFFFAOYSA-N meso-secoisolariciresinol Natural products C1=2C=C(O)C(OC)=CC=2CC(CO)C(CO)C1C1=CC=C(O)C(OC)=C1 OGFXBIXJCWAUCH-UHFFFAOYSA-N 0.000 description 1
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- 239000000203 mixture Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H47/00—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current
- H01H47/001—Functional circuits, e.g. logic, sequencing, interlocking circuits
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Abstract
A kind of electromagnetic relay low level self-locking control circuit proposed by the present invention, when the control signal that can solve electromagnetic relay using the present invention is interfered, relay contact is discharged by transient state, triggers the problem of control sequential is abnormal, it can be ensured that the job stability of product.The technical scheme is that：Electromagnetic relay K1 electrically connects paralleling switch contactor K1A input and the output end of power supply by relay coil K1B anode, simultaneously interface passes through divider resistance R1 to paralleling switch contactor K1A, R2 is grounded GND, divider resistance R1, R2 receives the control signal from external system by their contact phase inverter D1 in sequential series and diode V1, so that being parallel to the diode V3 between power output end and paralleling switch contactor K1A circuits and diode V1 and phase inverter circuit, the parallel closed loop loop of electromagnetic relay coil K1B and divider resistance R1 formation, constitute low level signal it is effective when self-locking control circuit.
Description
Technical field
The present invention relates to a kind of electromagnetic relay being widely used in electronic device control system, circuit is especially controlled
In electromagnetic relay self-locking control circuit.
Background technology
Electromagnetic relay is a kind of element commonly used in automatic control circuit, is that one kind smaller current controls larger current
Automatic switch.Typically it is made up of armature, coil, contact spring etc..After energization, electric current flows through coil, in the work of galvanomagnetic-effect
Under, armature draws close iron core, and sound contact closes up, sound contact separation after power-off.Electromagnetic relay is applied to various control electricity
Lu Zhong, just because of its this flexible " switch " characteristic, electromagnetic relay is widely applied.As long as adding one at coil two ends
Certain electric current is will pass through in fixed voltage, coil, so as to produce galvanomagnetic-effect, armature will electromagnetic attracting force effect
Under overcome the pulling force of return spring to be drawn to iron core so that the movable contact with moving armature and stationary contact (normally opened contact) adhesive.Work as line
After circle power-off, the suction of electromagnetism also disappears therewith, and armature will return to original position in the reaction force of spring, make movable contact
Discharged with original stationary contact (normally-closed contact).So adhesive, release, so as to reach conducting in circuit, the mesh of cut-out
's.For " normally opened, normally closed " contact of relay, can so it distinguish：It is off when relay coil is not powered on
Stationary contact, be referred to as " normally opened contact "；Stationary contact in an ON state is referred to as " normally-closed contact ".Relay typically has two strands of electricity
Road, is low-voltage control circuit and high-pressure work circuit.Self-latching relay, is a kind of relay controlled with pulse voltage,
Signal is provided by button or the pulse power, and after having a pulse signal hair to go, coil electricity, electromagnetic actuation drives and controlled
Circuit connect, after next signal is come, electromagnet drives again to be made to be controlled circuit to disconnect, therefore the product has self-locking
With signal control function
Controlled currently used for all kinds of Aerospace Control system powers, instruction is controlled and the electromagnetic relay of SECO is usual by controlling
Two compositions in loop and main circuit, main circuit is the need for electricity according to controlled device or electrical equipment, is typically filled by switch, protection
Put, auxiliary reclay main contacts is constituted；Control loop by auxiliary reclay coil and auxiliary contact, the time relay and control
Button is constituted.The general latching circuit that made of relay needs 2 groups of contacts to use, and its self-locking is start button with relay or connecing
The opened point of tentaculum is in parallel, is the result of reset switch coil series connection.Because electromagnetic relay belongs to mechanizing circuit, frequently open
Pass contact endurance is very limited, and mechanical switch contact will damage relay life in frequent operation, even direct when serious
Failure.In addition, Aerospace Control system control signal is generally from external system, the control signal is particularly susceptible to interference, goes out
Existing burr (or electromagnetic interference), can trigger electromagnetic relay contact switch contact to be discharged by transient state, cause power output signal to go out
Show hit and unstable, the unstable detonator circuit work schedule exception of power supply output, the transient state of subsequent conditioning circuit can be triggered when serious
Damage problem.Electromagnetic relay control signal is disturbed and hit occurs, easily triggers the sequential of Aerospace Control system abnormal, because
This, resists the weakest link that external interference is Aerospace Control system, the reliability of electromagnetic relay link is almost entirely to navigate
The important indicator of its control system.How key that its electromagnetic relay using reliability be whole circuit design is improved.Electromagnetism
Relay is on circuit design method, in addition to using Redundancy Design measure, it is necessary to consider the Anti-interference Design of electromagnetic relay.
The content of the invention
In order to solve the anti-interference problem of electromagnetic relay in actual applications, the present invention provides a kind of reliable operation, property
Can be stable, the control signal of electromagnetic relay can be avoided to be disturbed and trigger the abnormal electromagnetic relay of sequential from lock control electricity
Road.
The present invention is reached by following measures.A kind of electromagnetic relay low level self-locking control circuit, including：Control electricity
Source switch, receive external system control signal electromagnetic relay K1 and be connected across the positive and negative two ends of electromagnetic relay coil K1B
Diode V3, it is characterised in that：Electromagnetic relay K1 electrically connects paralleling switch contactor by relay coil K1B anode
K1A input and the output end of power supply, paralleling switch contactor K1A and interface are grounded GND by divider resistance R1, R2,
Divider resistance R1, R2 receive the control from external system by their contact phase inverter D1 in sequential series and diode V1 to be believed
Number so that it is parallel to two between power output end and paralleling switch contactor K1A circuits and diode V1 and phase inverter circuit
Pole pipe V3, electromagnetic relay coil K1B and divider resistance R1 formation parallel closed loop loop, constitute low level signal it is effective when
Self-locking control circuit.
The present invention has the advantages that compared to prior art：
Reliable operation.The present invention completes power switch control function using an electromagnetic relay K1, in control signal low level
When effectively, power supply is output to power output end, paralleling switch by electromagnetic relay paralleling switch contactor K1A two pairs of contacts
Contactor K1A two pairs of contacts and interface is by power output end connected divider resistance R1, divider resistance R2, with partial pressure electricity
R1 series connection ground connection is hindered, divider resistance R1 and R2 common point receive control signal, one by the phase inverter D1 diode V1 connected
Only bridging diode V3 connection electromagnetic relay coils K1B positive and negative two ends, receive external system control signal so that be parallel to
Diode V3, electromagnetism between power output end and paralleling switch contactor K1A circuits and diode V1 and phase inverter circuit after
Electric apparatus coil K1B and divider resistance R1 formation parallel closed loop loop, constitute low level signal it is effective when from lock control electricity
Road.Self-locking control circuit improves the work that power switch is controlled by paralleling switch contactor K1A two pairs of contact shunt modes
Make reliability.
Performance is stable, and the control signal that can be avoided after electromagnetic appliance is disturbed and triggers sequential abnormal.The present invention is used
Power supply is output to power output end to contact by paralleling switch contactor K1A two, paralleling switch contactor K1A two to contact simultaneously
Interface connects electromagnetic relay coil K1B anode, electromagnetic relay by power output end connected diode V2, diode V2
The current limliting divider resistance R1 that coil K1B anode is connected by a diode V1 and one receives the control from external system
Signal.When control signal low level is effective, power supply is contacted by paralleling switch contactor K1A two to contact K1A paralleling switches
Device is output to power output end, and divider resistance R1 and R2 common point receive control letter by the phase inverter D1 diode V1 connected
Number, electromagnetic relay coil K1B is powered, electromagnetic relay K1 actions, paralleling switch contactor K1A two pairs of closings of contact,
Power supply is output to power output end, and power output signal will pass through anti-phase by divider resistance R1 and R2 partial pressures, voltage division signal
Device D1 is input to electromagnetic relay coil K1B negative terminal, and the electromagnetic relay K1 that is powered is in self-locking state, it is to avoid relay
The control signal of magnetoelectricity device is disturbed and triggers sequential abnormal.
Brief description of the drawings
Invention is further illustrated with reference to the accompanying drawings and examples.
Fig. 1 is electromagnetic relay low level self-locking control circuit principle schematic of the present invention.
Embodiment
Refering to Fig. 1.It is described below in being embodiment, a kind of electromagnetic relay low level self-locking control circuit, including：Control
Power switch processed, receive external system control signal electromagnetic relay K1 and be connected across electromagnetic relay coil K1B positive and negative two
The diode V3 at end.Electromagnetic relay K1 electrically connects the defeated of paralleling switch contactor K1A by relay coil K1B anode 3
Enter the output end of end and power supply, simultaneously interface passes through divider resistance R1, R2 ground connection GND, divider resistance to paralleling switch contactor K1A
R1, R2 receive the control signal from external system by their contact phase inverter D1 in sequential series and diode V1 so that
Be parallel to diode V3 between power output end and paralleling switch contactor K1A circuits and diode V1 and phase inverter circuit,
Electromagnetic relay coil K1B and divider resistance R1 formation parallel closed loop loop, constitute low level signal it is effective when self-locking
Control circuit.
When control signal is low level, electric resistance partial pressure signal is sent into electromagnetism by divider resistance R1, R2 by phase inverter D1
Relay coil K1B negative terminal 7 and diode V3, electromagnetic relay coil K1B is powered, electromagnetic relay K1 actions, in parallel
Switch contact K1A two pairs of closings of contact, electromagnetic relay K1 paralleling switch contactor K1A contact switch is in adhesive shape
State, the electromagnetic relay K1 being powered is in self-locking state.
Electromagnetic relay K1 includes the paralleling switch contactor K1A with two pairs of contacts, receives external system control signal
Electromagnetic relay coil K1B.The termination powers of paralleling switch contactor K1A mono-, 2 pairs of contact shunt contacts electrical connection electricity of one end
Source output terminal.Diode V3 of the control signal of external system input by diode V1 and its with power sources in parallel, and electromagnetism
Relay K1 coil anode enters electromagnetic relay K1 coil negative terminal, sends into paralleling switch contactor K1A contact 2 and touches
Point 6, is produced to electromagnetic relay K1 counter electromotive force during to initial power-up, counter electromotive force when can avoid wire loop initial power-up
Harm to electromagnetic relay K1.
Power output end is connected paralleling switch contactor K1A contact 1, contact 5, contact 1, contact 5 and interface electricity
Divider resistance R1, divider resistance R1 series connection divider resistance R2 and R2 ground connection are connected, resistance pressure-dividing network is constituted.Resistance pressure-dividing network
The voltage division signal of output sends into electromagnetic relay K1 coil negative terminal 7 by phase inverter D1, when control signal is low level, electricity
Magnetic relay coil K1B is powered, electromagnetic relay K1 actions, promotes bimetal leaf action, and paralleling switch contactor K1A's touches
Point 1 and contact 6, contact 2 and the bimetal leaf of contact 5 action closure, paralleling switch contactor K1A contact switch are in adhesive shape
State, realizes snap action contact self-locking, and power supply is output to power output end, and power output signal will pass through divider resistance R1 and R2 points
Pressure, voltage division signal is input to electromagnetic relay coil K1B negative terminal 7 by phase inverter D1, at the electromagnetic relay K1 being powered
In self-locking state, so as to ensure electromagnetic relay reliably working, it is to avoid when the control signal after electromagnetic appliance is disturbed and triggered
Sequence is abnormal.
Claims (7)
1. a kind of electromagnetic relay low level self-locking control circuit, including：Control power switch, receive external system control signal
Electromagnetic relay K1 and be connected across the diode V3 at the positive and negative two ends of electromagnetic relay coil K1B, it is characterised in that：Electromagnetism after
Electrical equipment K1 electrically connects paralleling switch contactor K1A input and the output end of power supply by relay coil K1B anode, and
Join switch contact K1A and interface is grounded GND by divider resistance R1, R2, divider resistance R1, R2 are suitable by their contact
Secondary series connection phase inverter D1 and diode V1 receive the control signal from external system so that be parallel to power output end and parallel connection
Diode V3, electromagnetic relay coil K1B and partial pressure between switch contact K1A circuits and diode V1 and phase inverter circuit
Resistance R1 formation parallel closed loop loop, constitute low level signal it is effective when self-locking control circuit.
2. electromagnetic relay low level self-locking control circuit as claimed in claim 1, it is characterised in that：When control signal is low
During level, divider resistance R1, R2 send into electric resistance partial pressure signal by phase inverter D1 electromagnetic relay coil K1B negative terminal and two
Pole pipe V3, electromagnetic relay coil K1B is powered, electromagnetic relay K1 actions, and paralleling switch contactor K1A two pairs of contacts are closed
Close, electromagnetic relay K1 paralleling switch contactor K1A contact switch is at attracting state, the electromagnetic relay K1 being powered
In self-locking state.
3. electromagnetic relay low level self-locking control circuit as claimed in claim 1, it is characterised in that：Electromagnetic relay K1 bags
Include the paralleling switch contactor K1A with two pairs of contacts, receive the electromagnetic relay coil K1B of external system control signal.
4. electromagnetic relay low level self-locking control circuit as claimed in claim 1, it is characterised in that：Paralleling switch contactor
The termination powers of K1A mono-, 2 pairs of contact shunt contact electric connection of power supply output ends of one end.
5. electromagnetic relay low level self-locking control circuit as claimed in claim 1, it is characterised in that：External system input
Diode V3 of the control signal by diode V1 and its with power sources in parallel, and electromagnetic relay K1 coil anode enter electricity
Magnetic relay K1 coil negative terminal, feeding paralleling switch contactor K1A contact 2 and contact 6, is produced to electricity during to initial power-up
Magnetic relay K1 counter electromotive force.
6. electromagnetic relay low level self-locking control circuit as claimed in claim 1, it is characterised in that：Power output end is connected
Paralleling switch contactor K1A contact 1, contact 5, contact 1, contact 5 and interface electrical connection divider resistance R1, divider resistance
R1 series connection divider resistance R2 and R2 ground connection, constitute resistance pressure-dividing network.
7. electromagnetic relay low level self-locking control circuit as claimed in claim 1, it is characterised in that：Resistance pressure-dividing network is defeated
The voltage division signal gone out sends into electromagnetic relay K1 coil negative terminal by phase inverter D1；When control signal is low level, electromagnetism
Relay coil K1B is powered, electromagnetic relay K1 actions, paralleling switch contactor K1A contact 1 and contact 6, the He of contact 2
Contact 5 is closed, and paralleling switch contactor K1A contact switch is in attracting state, and power supply is output to power output end, power supply
Output signal will be input to electromagnetic relay by divider resistance R1 and divider resistance R2 partial pressures, voltage division signal by phase inverter D1
Coil K1B negative terminal, the electromagnetic relay K1 being powered is in self-locking state.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710405700.2A CN107146739B (en) | 2017-06-01 | 2017-06-01 | Low-level self-locking control circuit of electromagnetic relay |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710405700.2A CN107146739B (en) | 2017-06-01 | 2017-06-01 | Low-level self-locking control circuit of electromagnetic relay |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107146739A true CN107146739A (en) | 2017-09-08 |
| CN107146739B CN107146739B (en) | 2020-07-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710405700.2A Active CN107146739B (en) | 2017-06-01 | 2017-06-01 | Low-level self-locking control circuit of electromagnetic relay |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111610843A (en) * | 2020-07-06 | 2020-09-01 | 山东交通职业学院 | A computer switch system based on relay and logic control technology |
| CN111638778A (en) * | 2020-05-18 | 2020-09-08 | 高新兴物联科技有限公司 | Low-power-consumption control circuit, control method and electronic equipment |
| CN119132885A (en) * | 2024-11-08 | 2024-12-13 | 赛诺威盛科技(北京)股份有限公司 | A self-locking and unlocking circuit based on pulse control and circuit control method |
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| US5917691A (en) * | 1996-04-08 | 1999-06-29 | Kadah; Andrew S. | Fail-safe valve relay driver circuit for gas burners |
| FR2843932B1 (en) * | 2002-09-04 | 2004-11-19 | Renault Sa | IN A VEHICLE, CONTROL CIRCUIT FOR A SECURITY DEVICE. |
| CN102064515A (en) * | 2009-11-16 | 2011-05-18 | 淳俅 | Domestic intelligent electrical safe power distribution system |
| CN203761032U (en) * | 2014-03-26 | 2014-08-06 | 重庆大学 | Lithium battery low-voltage self-locking circuit |
| CN204167961U (en) * | 2014-11-08 | 2015-02-18 | 吴江德雷克斯电子有限公司 | USB automobile charger automatic shutdown circuitry |
| CN104362041A (en) * | 2014-11-18 | 2015-02-18 | 成都海沃斯电气技术有限公司 | Passive control circuit of alternating-current contactor |
-
2017
- 2017-06-01 CN CN201710405700.2A patent/CN107146739B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5917691A (en) * | 1996-04-08 | 1999-06-29 | Kadah; Andrew S. | Fail-safe valve relay driver circuit for gas burners |
| FR2843932B1 (en) * | 2002-09-04 | 2004-11-19 | Renault Sa | IN A VEHICLE, CONTROL CIRCUIT FOR A SECURITY DEVICE. |
| CN102064515A (en) * | 2009-11-16 | 2011-05-18 | 淳俅 | Domestic intelligent electrical safe power distribution system |
| CN203761032U (en) * | 2014-03-26 | 2014-08-06 | 重庆大学 | Lithium battery low-voltage self-locking circuit |
| CN204167961U (en) * | 2014-11-08 | 2015-02-18 | 吴江德雷克斯电子有限公司 | USB automobile charger automatic shutdown circuitry |
| CN104362041A (en) * | 2014-11-18 | 2015-02-18 | 成都海沃斯电气技术有限公司 | Passive control circuit of alternating-current contactor |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111638778A (en) * | 2020-05-18 | 2020-09-08 | 高新兴物联科技有限公司 | Low-power-consumption control circuit, control method and electronic equipment |
| CN111610843A (en) * | 2020-07-06 | 2020-09-01 | 山东交通职业学院 | A computer switch system based on relay and logic control technology |
| CN119132885A (en) * | 2024-11-08 | 2024-12-13 | 赛诺威盛科技(北京)股份有限公司 | A self-locking and unlocking circuit based on pulse control and circuit control method |
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| CN107146739B (en) | 2020-07-17 |
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