CN206099325U - Switch control circuit - Google Patents
Switch control circuit Download PDFInfo
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- CN206099325U CN206099325U CN201621013466.6U CN201621013466U CN206099325U CN 206099325 U CN206099325 U CN 206099325U CN 201621013466 U CN201621013466 U CN 201621013466U CN 206099325 U CN206099325 U CN 206099325U
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Abstract
The utility model relates to a switch control circuit, including the relay and be used for controlling drive circuit's output signal's CPU return circuit, be used for driving dynamic relay to the drive circuit of control relay state, drive circuit includes an optoelectronic coupler, the 2nd optoelectronic coupler and the 3rd optoelectronic coupler, CPU passes through logic control circuit controlling output signal to influence driving circuit's incoming signal, and then control driving circuit's output signal, and driving circuit's output signal is as the incoming signal of switch, reaches the purpose of control switch state from this. The utility model discloses switch control circuit has effectively prevented the interference of high frequency oscillation to the circuit, has reduced the malfunction of switch, has improved the stability of product, absorb the reverse voltage of relay perception coil, in the extension relay life -span, promoted reliability of an item, gather the relay state, prevent unreliable action, improved the accuracy that the relay returned state acquisition.
Description
Technical field
This utility model is related to electronic circuit technology field, specifically, is to be related to a kind of ON-OFF control circuit.
Background technology
In modern society, either industry, agricultural, transportation, national defence, culture, education and public health, finance, business, tourist service
Electricity is be unable to do without all with the field such as people's lives.The generation of electricity, conveying, in use, distribution is an extremely important link.Open circuit
The switchgears such as device, on-load switch are that a kind of usage amount is big, the extensive controller switching equipment of usable floor area.
The ON-OFF control circuit for being possessed in the market, is all to connect driving chip using the independent pins of CPU, drives core
Piece reaches the state of relay contact controlling switch division by photoelectric coupled device control relay coil.In high, middle buckling
The distribution occasion such as power station, can all produce the high frequency damp wave of oscillation when switch point, closing operation, i.e. commonly referred to High-frequency Interference, high frequency
The electromagnetic wave of concussion by conduction, radiation make surrounding equipment generation logical error, easily make relay coil power supply unstable and
Proximity switch misoperation；The inductive coil of relay has a reverse high voltage, this voltage in the moment of power-off
The abnormal or even punch through damage for causing circuit miscellaneous equipment to work is likely to, multi-pass operation is easily damaged relay；It is many
Counting apparatus only gather the on-off state of primary equipment, it is impossible to timely and effective reaction relay status, it is impossible to timely and effective reaction
Equipment fault.
In order to solve these problems, the normal parallel resistances between relay inductive coil of those skilled in the art Jing, but
In the case of varying environment, resistance parameter does not have concordance.Resistance is less than normal, it is impossible to effectively protects, can only reduce failure
Probability；Resistance is bigger than normal, not enough for the driving force of relay inductive coil, it is impossible to the division of controlling switch.Therefore, it is right
In effectively protection, the ON-OFF control circuit for very driving success rate be demand in the industry.
Utility model content
For above-mentioned deficiency of the prior art, this utility model provides a kind of simple structure, extends ON-OFF control circuit
Service life, improve the ON-OFF control circuit of the stability of product.
Technical solution adopted in the utility model is：
A kind of ON-OFF control circuit,
CPU loops including relay and for controlling the output signal of drive circuit；
For driving relay, with the drive circuit of control relay state；
Drive circuit includes the first photoelectrical coupler D11, the second photoelectrical coupler D12 and the 3rd photoelectrical coupler D13；
The first photoelectrical coupler D11 includes that the first photoelectrical coupler light emitting diode and the first photoelectrical coupler are photosensitive
Triode；
The positive pole of the first photoelectrical coupler light emitting diode is connected with+3.3V power supplys；
The negative pole of light emitting diode is connected with the outfan of the first NAND gate circuit by first resistor R1；
The first input end of the first NAND gate circuit D10 is connected with the YKEN outfans of CPU；
Second input of the first NAND gate circuit D10 is connected with the outfan of the second NAND gate circuit (D9)；
Two inputs of the second NAND gate circuit are connected with the YKCS outfans of CPU；
The emitter stage of the photosensitive triode of the first photoelectrical coupler is connected with 24V earth terminals；
The colelctor electrode of the photosensitive triode of the first photoelectrical coupler is connected with the 17th diode V17 positive poles；
17th diode V17 negative poles are connected with+24V power supplys
17th diode V17 negative poles are connected with one end of the first normal open switch YK17-1 of the 17th relay；
The positive pole of the 17th diode V17 is connected with one end of the 17th coil RL17 of the 17th relay；
The negative pole of the 17th diode V17 is connected with the other end of the 17th coil RL17 of the 17th relay；
One end of second normal open switch YK17-IO of the 17th relay is connected with+3.3V power supplys through R4；
One end of second normal open switch YK17-IO of the 17th relay is connected with 3.3V earth terminals；
The second photoelectrical coupler D12 includes that the second photoelectrical coupler light emitting diode and the second photoelectrical coupler are photosensitive
Triode；
The positive pole of the second photoelectrical coupler light emitting diode is connected with+3.3V power supplys；
The negative pole of the second photoelectrical coupler light emitting diode passes through the YKCS2 outfan phases of second resistance R2 and CPU
Connection；
The emitter stage of the photosensitive triode of the second photoelectrical coupler is connected with 24V earth terminals；
The colelctor electrode of the photosensitive triode of the second photoelectrical coupler is connected with the 18th diode V18 positive poles；
18th diode V18 negative poles are connected with the other end of the first normal open switch YK17-1 of the 17th relay；
18th diode cathode is connected with one end of the first normal open switch YK18-1 of the 18th relay；
The positive pole of the 18th diode V18 is connected with one end of the 18th coil RL18 of the 18th relay；
The negative pole of the 18th diode V18 is connected with the other end of the 18th coil RL18 of the 18th relay；
One end of second normal open switch YK18-IO of the 18th relay is connected with+3.3V power supplys through R5；
One end of second normal open switch YK18-IO of the 18th relay is connected with 3.3V earth terminals；
The 3rd photoelectrical coupler D13 includes that the 3rd photoelectrical coupler light emitting diode and the 3rd photoelectrical coupler are photosensitive
Triode；
The positive pole of the 3rd photoelectrical coupler light emitting diode is connected with+3.3V power supplys；
The negative pole of the 3rd photoelectrical coupler light emitting diode is connected with the YK0 ' outfans of CPU by 3rd resistor R3
Connect；
The emitter stage of the photosensitive triode of the 3rd photoelectrical coupler is connected with 24V earth terminals；
The colelctor electrode of the photosensitive triode of the 3rd photoelectrical coupler is connected with the first diode cathode；
First diode V1 negative poles are connected with the other end of the first normal open switch YK18-1 of the 18th relay；
The positive pole of the first diode V1 is connected with one end of first coil RL1 of the first relay；
The negative pole of the first diode V1 is connected with the other end of first coil RL1 of the first relay；
One end of first normal open switch YK1-IO of the first relay is connected with+3.3V power supplys through R6；
One end of first normal open switch YK1-IO of the first relay is connected with 3.3V earth terminals；
One end of second normal open switch YK1-2 of the first relay is connected with YK1-COM ends；
The other end of the second normal open switch YK1-2 of the first relay is connected with YK1-CK ends.
The beneficial effect of this utility model hinge structure：
This utility model ON-OFF control circuit, effectively prevent high frequency oscillation for the interference of circuit, reduces switch
Misoperation, improves the stability of product；The backward voltage of relay inductive coil is absorbed, extends relay life, lifted
The reliability of product；Collection relay status, prevent unreliable action, and by the way of software Key dithering, improve
Relay returns the accuracy of state acquisition.
Description of the drawings
Structural representations of the Fig. 1 for 1 breaker in middle control circuit of this utility model embodiment；
Fig. 2 is the schematic diagram of driving circuit in this utility model.
Critical piece symbol description in accompanying drawing：
In figure：
Specific embodiment
Referring to the drawings and embodiment is described in detail to this utility model：
Accompanying drawing 1-2 understands, in description of the present utility model, it should be noted that unless otherwise clearly regulation and limiting
Fixed, term " installation ", " being connected ", " connection " should be interpreted broadly, for example, it may be being fixedly connected, or detachably connecting
Connect, or be integrally connected；Can be mechanically connected, or electrically connect；Can be joined directly together, it is also possible to by middle matchmaker
Jie is indirectly connected to, and can also be the connection of two element internals, can be wireless connection, or wired connection.For this
For the those of ordinary skill in field, concrete meaning of the above-mentioned term in this utility model can be understood with concrete condition.
A kind of ON-OFF control circuit,
CPU loops including relay and for controlling the output signal of drive circuit；
For driving relay, with the drive circuit of control relay state；
Drive circuit includes the first photoelectrical coupler D11, the second photoelectrical coupler D12 and the 3rd photoelectrical coupler D13；
The first photoelectrical coupler D11 includes that the first photoelectrical coupler light emitting diode and the first photoelectrical coupler are photosensitive
Triode；
The positive pole of the first photoelectrical coupler light emitting diode is connected with+3.3V power supplys；
The negative pole of light emitting diode is connected with the outfan of the first NAND gate circuit by first resistor R1；
The first input end of the first NAND gate circuit D10 is connected with the YKEN outfans of CPU；
Second input of the first NAND gate circuit D10 is connected with the outfan of the second NAND gate circuit D9；
Two inputs of the second NAND gate circuit are connected with the YKCS outfans of CPU；
The emitter stage of the photosensitive triode of the first photoelectrical coupler is connected with 24V earth terminals；
The colelctor electrode of the photosensitive triode of the first photoelectrical coupler is connected with the 17th diode V17 positive poles；
17th diode V17 negative poles are connected with+24V power supplys
17th diode V17 negative poles are connected with one end of the first normal open switch YK17-1 of the 17th relay；
The positive pole of the 17th diode V17 is connected with one end of the 17th coil RL17 of the 17th relay；
The negative pole of the 17th diode V17 is connected with the other end of the 17th coil RL17 of the 17th relay；
One end Jing R4 of the second normal open switch YK17-IO of the 17th relay are connected with+3.3V power supplys；
One end of second normal open switch YK17-IO of the 17th relay is connected with 3.3V earth terminals；
The second photoelectrical coupler D12 includes that the second photoelectrical coupler light emitting diode and the second photoelectrical coupler are photosensitive
Triode；
The positive pole of the second photoelectrical coupler light emitting diode is connected with+3.3V power supplys；
The negative pole of the second photoelectrical coupler light emitting diode passes through the YKCS2 outfan phases of second resistance R2 and CPU
Connection；
The emitter stage of the photosensitive triode of the second photoelectrical coupler is connected with 24V earth terminals；
The colelctor electrode of the photosensitive triode of the second photoelectrical coupler is connected with the 18th diode V18 positive poles；
18th diode V18 negative poles are connected with the other end of the first normal open switch YK17-1 of the 17th relay；
18th diode cathode is connected with one end of the first normal open switch YK18-1 of the 18th relay；
The positive pole of the 18th diode V18 is connected with one end of the 18th coil RL18 of the 18th relay；
The negative pole of the 18th diode V18 is connected with the other end of the 18th coil RL18 of the 18th relay；
One end of second normal open switch YK18-IO of the 18th relay is connected with Jing R5 with+3.3V power supplys；
One end of second normal open switch YK18-IO of the 18th relay is connected with 3.3V earth terminals；
The 3rd photoelectrical coupler D13 includes that the 3rd photoelectrical coupler light emitting diode and the 3rd photoelectrical coupler are photosensitive
Triode；
The positive pole of the 3rd photoelectrical coupler light emitting diode is connected with+3.3V power supplys；
The negative pole of the 3rd photoelectrical coupler light emitting diode is connected with the YK0 ' outfans of CPU by 3rd resistor R3
Connect；
The emitter stage of the photosensitive triode of the 3rd photoelectrical coupler is connected with 24V earth terminals；
The colelctor electrode of the photosensitive triode of the 3rd photoelectrical coupler is connected with the first diode cathode；
First diode V1 negative poles are connected with the other end of the first normal open switch YK18-1 of the 18th relay；
The positive pole of the first diode V1 is connected with one end of first coil RL1 of the first relay；
The negative pole of the first diode V1 is connected with the other end of first coil RL1 of the first relay；
One end Jing R6 of the first normal open switch YK1-IO of the first relay are connected with+3.3V power supplys；
One end of first normal open switch YK1-IO of the first relay is connected with 3.3V earth terminals；
One end of second normal open switch YK1-2 of the first relay is connected with YK1-COM ends；
The other end of the second normal open switch YK1-2 of the first relay is connected with YK1-CK ends.
This utility model ON-OFF control circuit, effectively prevent high frequency oscillation for the interference of circuit, reduces switch
Misoperation, improves the stability of product；The backward voltage of relay inductive coil is absorbed, extends relay life, lifted
The reliability of product；Collection relay status, prevent unreliable action, and by the way of software Key dithering, improve
Relay returns the accuracy of state acquisition.
The present embodiment provides ON-OFF control circuit, structure shown in Figure 1, including CPU loops 1, driver 2, is driven back to
Road 3 and switch 4, wherein：
Switch 4 includes point and closes two states, and 3 repeat circuit of driving circuit includes disconnecting and closes two states, is used for
Controlling switch 4 is in point state or a conjunction state；Driver 2 is used for 4 pins for driving driving circuit 3, to reach control relay
The state of device；CPU loops 1 are used for the output state for controlling driver.
CPU loops 1 are connected with driver 2, and driver 2 is connected with driving circuit 3, and CPU loops 1 pass through logic control circuit
Controlled output signal, to affect the input signal of driving circuit, and then controls the output signal of driving circuit, and driving circuit
Output signal input signal again as switch, thus reaches the purpose of controlling switch state.
Preferably, CPU loops include a cpu chip, for the control circuit in integrated CPU loops.
On this basis, further, cpu chip is ARM series STM32 chips.
On this basis, further, cpu chip and driver, the connection of driving circuit, for by controlling to drive
The input signal in loop controls the output signal of driving circuit.
Cpu chip includes four I/O outfans, YKCS, YKCS2, YKEN, YK0 ' driving pin be connected with driver,
Driver selects 74HC244 or 74HC245, is CMOS-type Three-State gate circuit, and output pin driving force increases.Drive
Device output pin YKCS, YKCS2, YKEN, YK0 ' it is connected with driving circuit, for being driven back to by the logic control in CPU loops
The input signal on road.
The driving circuit actuating of relay is taken and is first selected, then the mode for performing, using the YKCS of driver, YKCS2,
YKEN, YK0 ' being controlled, effectively prevent misoperation.As shown in Figure 2：
Original state, relay RL1, RL17, RL18 coil no-voltage, contact disconnect.YK1-IO、YK17-IO、YK18-
IO is connected to the I/O pin of CPU, is detected as high level.
Remote control is selected：CPU manages D11 by driver control YKCS pin low level, YK_EN pin high level modes
Foot 2 is low level, and D11 light emitting diodes are lighted by electric current, and phototriode saturation conduction, RL17 relay coils are obtained
Electricity, relay normally open contact adhesive, V-24VYK are connected to V-24V-YK1.
CPU is lighted by electric current by driver control YKCS2 pin low level, D12 light emitting diodes, photosensitive three pole
Pipe saturation conduction, RL18 relay coils obtain electric, and relay normally open contact adhesive, V-24VYK are connected on V24VYK ', realize
The control of power supply.
Detection YK17-IO is low level with YK18-IO remote signalling, judges that remote control is selected correct.
Remote control is performed：CPU passes through driver control YK0 ' pin low level, D13 light emitting diodes are lighted by electric current,
Phototriode saturation conduction, RL1 relay coils obtain electric, relay normally open contact YK1-COM and YK1-CK adhesives, realize out
Measure output control in pass.
Detection YK1-IO is low level, judges that remote control is performed correct.
By the effective collection to remote control contact, the return state of relay can be reflected in time.And software increase is gone
Process is trembled, prevents erroneous judgement.
ON-OFF control circuit, including：
CPU loops, for controlling the output signal of the drive circuit；
Driver, typical CMOS-type Three-State gate circuit.Due to single-chip microcomputer or the data address/controlling bus of CPU
There is certain load capacity port, if load should typically add driver more than its load capacity.
Drive circuit, for driving the relay, with the state of control relay；
Relay, including disconnect and closure two states, for controlling the switch in division state；
Above-mentioned ON-OFF control circuit, wherein, the CPU loops include a cpu chip, for the control in integrated CPU loops
Circuit processed.
Above-mentioned ON-OFF control circuit, wherein, the cpu chip is ARM series STM32 chips.
Above-mentioned ON-OFF control circuit, wherein, the cpu chip is connected with the driver, drive circuit, for by control
The input signal for making the drive circuit controls the output signal of the drive circuit.
Above-mentioned ON-OFF control circuit, wherein, the drive circuit includes one and gate circuit, photoelectrical coupler, relay,
Common mode inductance, for the division state of drive control switch.
Above-mentioned ON-OFF control circuit, wherein, the pin of the controlling switch is YKCS, YKCS2, YKEN, YK0 ', use four
Root pin injustice level state controls the division that three relays realize one group of switch, it is to avoid high-frequency electromagnetic is disturbed for circuit
Interference.And prevent reverse surge voltage to cause irrecoverable damage to relay inductive coil using diode, prolong
Long relay life.And the real-time status of three relays is gathered, software stabilization is processed, and whether just Real Time Observation relay
Often.
Technical solutions of the utility model, have the advantage that：
The switch control circuit that this utility model is provided, effectively prevent high frequency oscillation for the interference of circuit, reduces
The misoperation of switch, improves the stability of product；The backward voltage of relay inductive coil is absorbed, extends the relay longevity
Life, improves the reliability of product；Collection relay status, prevent unreliable action, and by the way of software Key dithering,
Improve the accuracy that relay returns state acquisition.
On this basis, more improve, increase backward diode at inductive coil, in the wink of relay power-off
Between, have a reverse high voltage, give this backward voltage one path of releasing herein, prevent for pcb board part with
And the damage of components and parts.
In sum, this utility model includes the ON-OFF control circuit of CPU loops, driver, driving circuit by structure,
By the output signal in the logic control CPU loops of the cpu chip in CPU loops, and then the input signal of impact driving circuit,
The output signal of control drive circuit is reached, the purpose of further control relay, circuit structure are simple, suitability width.
Obviously, above-described embodiment is only intended to clearly illustrate example, and the not restriction to embodiment.It is right
For those of ordinary skill in the art, can also make on the basis of the above description other multi-forms change or
Change.There is no need to be exhaustive to all of embodiment.And thus it is extended obvious change or
Among changing the protection domain created still in this utility model.
Claims (1)
1. a kind of ON-OFF control circuit,
CPU loops including relay and for controlling the output signal of drive circuit；
For driving relay, with the drive circuit of control relay state；
It is characterized in that：
Drive circuit includes the first photoelectrical coupler D11, the second photoelectrical coupler D12 and the 3rd photoelectrical coupler D13；
The first photoelectrical coupler D11 includes the first photoelectrical coupler light emitting diode and the photosensitive three-level of the first photoelectrical coupler
Pipe；
The positive pole of the first photoelectrical coupler light emitting diode is connected with+3.3V power supplys；
The negative pole of light emitting diode is connected with the outfan of the first NAND gate circuit by first resistor R1；
The first input end of the first NAND gate circuit D10 is connected with the YKEN outfans of CPU；
Second input of the first NAND gate circuit D10 is connected with the outfan of the second NAND gate circuit D9；
Two inputs of the second NAND gate circuit D9 are connected with the YKCS outfans of CPU；
The emitter stage of the photosensitive triode of the first photoelectrical coupler is connected with 24V earth terminals；
The colelctor electrode of the photosensitive triode of the first photoelectrical coupler is connected with the 17th diode V17 positive poles；
17th diode V17 negative poles are connected with+24V power supplys
17th diode V17 negative poles are connected with one end of the first normal open switch YK17-1 of the 17th relay；
The positive pole of the 17th diode V17 is connected with one end of the 17th coil RL17 of the 17th relay；
The negative pole of the 17th diode V17 is connected with the other end of the 17th coil RL17 of the 17th relay；
One end of second normal open switch YK17-IO of the 17th relay is connected with+3.3V power supplys through (R4)；
One end of second normal open switch YK17-IO of the 17th relay is connected with 3.3V earth terminals；
The second photoelectrical coupler D12 includes the second photoelectrical coupler light emitting diode and the photosensitive three-level of the second photoelectrical coupler
Pipe；
The positive pole of the second photoelectrical coupler light emitting diode is connected with+3.3V power supplys；
The negative pole of the second photoelectrical coupler light emitting diode is connected with the YKCS2 outfans of CPU by second resistance R2；
The emitter stage of the photosensitive triode of the second photoelectrical coupler is connected with 24V earth terminals；
The colelctor electrode of the photosensitive triode of the second photoelectrical coupler is connected with the 18th diode cathode；
18th diode cathode is connected with the other end of the first normal open switch YK17-1 of the 17th relay；
18th diode V18 negative poles are connected with one end of the first normal open switch YK18-1 of the 18th relay；
The positive pole of the 18th diode V18 is connected with one end of the 18th coil RL18 of the 18th relay；
The negative pole of the 18th diode V18 is connected with the other end of the 18th coil RL18 of the 18th relay；
One end of second normal open switch YK18-IO of the 18th relay is connected with+3.3V power supplys through R5；
One end of second normal open switch YK18-IO of the 18th relay is connected with 3.3V earth terminals；
The 3rd photoelectrical coupler D13 includes the 3rd photoelectrical coupler light emitting diode and the photosensitive three-level of the 3rd photoelectrical coupler
Pipe；
The positive pole of the 3rd photoelectrical coupler light emitting diode is connected with+3.3V power supplys；
The negative pole of the 3rd photoelectrical coupler light emitting diode is connected with the YK0 ' outfans of CPU by 3rd resistor R3；
The emitter stage of the photosensitive triode of the 3rd photoelectrical coupler is connected with 24V earth terminals；
The colelctor electrode of the photosensitive triode of the 3rd photoelectrical coupler is connected with the first diode cathode；
First diode V1 negative poles are connected with the other end of the first normal open switch YK18-1 of the 18th relay；
The positive pole of the first diode V1 is connected with one end of first coil RL1 of the first relay；
The negative pole of the first diode V1 is connected with the other end of first coil RL1 of the first relay；
One end of first normal open switch YK1-IO of the first relay is connected with+3.3V power supplys through R6；
One end of first normal open switch YK1-IO of the first relay is connected with 3.3V earth terminals；
One end of second normal open switch YK1-2 of the first relay is connected with YK1-COM ends；
The other end of the second normal open switch YK1-2 of the first relay is connected with YK1-CK ends.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621013466.6U CN206099325U (en) | 2016-08-30 | 2016-08-30 | Switch control circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621013466.6U CN206099325U (en) | 2016-08-30 | 2016-08-30 | Switch control circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206099325U true CN206099325U (en) | 2017-04-12 |
Family
ID=58478743
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621013466.6U Active CN206099325U (en) | 2016-08-30 | 2016-08-30 | Switch control circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206099325U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11251699B2 (en) | 2018-06-15 | 2022-02-15 | Samsung Sdi Co., Ltd. | Relay and battery system including the same |
-
2016
- 2016-08-30 CN CN201621013466.6U patent/CN206099325U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11251699B2 (en) | 2018-06-15 | 2022-02-15 | Samsung Sdi Co., Ltd. | Relay and battery system including the same |
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