CN102983041B - Prevent the device of power up repeat circuit misoperation - Google Patents
Prevent the device of power up repeat circuit misoperation Download PDFInfo
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- CN102983041B CN102983041B CN201210449487.2A CN201210449487A CN102983041B CN 102983041 B CN102983041 B CN 102983041B CN 201210449487 A CN201210449487 A CN 201210449487A CN 102983041 B CN102983041 B CN 102983041B
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- relay
- resistance
- chip microcomputer
- triode
- power supply
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Abstract
The present invention discloses a kind of device preventing the misoperation of power up repeat circuit, is connected between single-chip microcomputer and external circuit, comprises: power supply makes energy control module, at least one relay and driver module.The arrangement increases the requirement of the reliability and stability of whole relay, effectively reduce the generation of relay misoperation, and simple structure, successful, in common single chip circuit, the relay misoperation that can avoid powers on causes is done.
Description
Technical field
The present invention relates to electronic circuit field, specifically, relate to a kind of device preventing the misoperation of power up repeat circuit.
Background technology
In some electronic equipments, relay (relay) is a kind of electric control device, is when the change of input variable (energizing quantity) reaches regulation requirement, makes controlled volume that a kind of electrical equipment of predetermined Spline smoothing occurs in electric output circuit.It has control system (also known as input circuit) and by the interactive relationship between control system (also known as output loop).Usually be applied in the control circuit of automation, it is actually the one " automatic switch " going to control big current running with small area analysis.Therefore play the effects such as automatic adjustment, safeguard protection, change-over circuit in circuit.
Control relay circuit conventional at present; as shown in Figure 1; controlled by the I/O port of single-chip microprocessor MCU; and in this single-chip microcomputer power up, the state due to I/O port is default conditions, if the driver module 02 of relay 01 does not consider the acquiescence level of IO; just likely can cause the misoperation of relay 01; in the application such as relaying protection, once relay misoperation, just likely cause the generation of large-area power-off and even more major break down.
Therefore, the problems referred to above just become technical problem urgently to be resolved hurrily.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of device preventing the misoperation of power up repeat circuit, to solve the problem that control relay circuit conventional at present causes relay misoperation in single-chip microcomputer power up.
For solving the problems of the technologies described above, the invention provides a kind of device preventing the misoperation of power up repeat circuit, be connected between single-chip microcomputer and external circuit, it is characterized in that, this device comprises: power supply makes energy control module, at least one relay and driver module; Wherein,
Described power supply makes energy control module, is connected with described relay with described single-chip microcomputer, for receiving the control signal that described single-chip I/O mouth sends, and determines whether that described relay is powered according to this control signal;
Described relay, makes energy control module with described power supply, driver module is connected with external circuit, for make energy control module provide electric energy in described power supply state under start, and according to the drive singal that described driver module exports, external circuit to be regulated;
Described driver module, is connected with relay with described single-chip microcomputer, for the I/O port control signal according to single-chip microcomputer, drives described relay work.
Further, wherein, described control signal is low and high level signal.
Further, wherein, described relay is electromagnetic type relay further.
Further, wherein, described power supply makes energy control module be made up of the first resistance and the second resistance and first triode.
Further, wherein, described driver module is made up of the 3rd resistance and the 4th resistance and second triode.
Further, wherein, the IO pin of described single-chip microcomputer is connected on described second resistance and the 3rd resistance.
Further, wherein, described first triode is PNP type triode further.
Further, wherein, described second triode is NPN type triode further.
Compared with prior art, a kind of device of power up repeat circuit misoperation that prevents of the present invention reaches following effect:
1) invention increases the requirement of the reliability and stability of whole relay, effectively reduce the generation of relay misoperation;
2) apparatus structure of power up repeat circuit misoperation that prevents of the present invention is simple and easy, successful, and in common single chip circuit, the relay misoperation that can avoid powers on causes is done;
3) no matter wide accommodation of the present invention is above the lower consumer electronics of requirement, above the industrial products still requiring high reliability, can apply this circuit.
Accompanying drawing explanation
Fig. 1 is relay control device structured flowchart generally conventional at present in prior art;
Fig. 2 is a kind of apparatus structure block diagram preventing the misoperation of power up repeat circuit described in the specific embodiment of the invention;
Fig. 3 is a kind of device preferred circuit figure preventing the misoperation of power up repeat circuit described in the specific embodiment of the invention;
Fig. 4 is the preferred circuit figure increasing relay in the specific embodiment of the invention.
Embodiment
As employed some vocabulary to censure specific components in the middle of specification and claim.Those skilled in the art should understand, and hardware manufacturer may call same assembly with different noun.This specification and claims are not used as with the difference of title the mode distinguishing assembly, but are used as the criterion of differentiation with assembly difference functionally." comprising " as mentioned in the middle of specification and claim is in the whole text an open language, therefore should be construed to " comprise but be not limited to "." roughly " refer to that in acceptable error range, those skilled in the art can solve the technical problem within the scope of certain error, reach described technique effect substantially.In addition, " couple " word comprise directly any at this and be indirectly electrically connected means.Therefore, if describe a first device in literary composition to be coupled to one second device, then represent described first device and directly can be electrically connected at described second device, or be indirectly electrically connected to described second device by other devices or connection means.Specification subsequent descriptions is for implementing better embodiment of the present invention, and right described description is to illustrate for the purpose of rule of the present invention, and is not used to limit scope of the present invention.Protection scope of the present invention is when being as the criterion depending on the claims person of defining.
Below in conjunction with accompanying drawing, the present invention is described in further detail, but not as a limitation of the invention.
As shown in Figure 2, for the apparatus structure block diagram preventing the misoperation of power up repeat circuit a kind of described in the specific embodiment of the invention, wherein, this device 10 is connected between single-chip microcomputer and external circuit, and this device 10 comprises: power supply makes energy control module 101, relay 102 and driver module 103; (it will be understood by those skilled in the art that single-chip microcomputer shown in figure can be disposable type, do not make restriction at this); Wherein,
Described power supply makes energy control module 101, is connected with described relay 102 with described single-chip microcomputer, for receiving the control signal that described single-chip I/O mouth sends, and determines whether that described relay 102 is powered according to this control signal.Control signal described here in the present embodiment can be low and high level signal.
Described relay 102, make energy control module 101 with described power supply, driver module 103 is connected with external circuit, for make energy control module 101 provide electric energy in described power supply state under start, and according to the drive singal that described driver module 103 exports, external circuit to be regulated.
In a particular embodiment, described relay 102 can be, but not limited to be electromagnetic type relay, also can be the relay of disposable type, be not specifically limited here.
Described driver module 103, is connected with relay 102 with described single-chip microcomputer, for the I/O port control signal according to single-chip microcomputer, drives described relay 102 to work.Control signal described here in the present embodiment can be low and high level signal.
Specific embodiment
As shown in Figure 3, be a kind of device preferred circuit figure preventing the misoperation of power up repeat circuit described in the specific embodiment of the invention, wherein,
Described power supply makes energy control module 101 also can be called the first resistance, the second resistance by resistance R1, R2() and PNP type triode Q1(first triode) form;
Described driver module 103 also can be called the 3rd resistance, the 4th resistance by resistance R3, R4() and NPN type triode Q2(second triode) form;
Described relay 102 is made up of electromagnetic type relay K1;
IO pin P1.0 and P1.1 of single-chip microcomputer is connected on R2 and R3.
When delivery outlet (DO1_1, DO1_2 and DO1_3) action of needs described relay 102, first need to set low level to P1.0, after the dividing potential drop of R1 and R2, the base voltage of Q1 much smaller than emitter voltage, Q1 triode ON.Then level is set high to P1.1, when P1.1 is high level, through the dividing potential drop of R3 and R4, the base voltage of Q2 is greater than 0.7V, corresponding Q2 triode will conducting, at this time the coil two ends of relay K 1 just have the voltage of 5V, so relay just can adhesive.What the R1 resistance in figure play a part is pull-up, and R4 plays a part drop-down.When single-chip microcomputer has just started to work on power, if I/O port does not have initialization, described resistance R1 and R4 can ensure that triode can not mislead.
When described relay 102 needs work, described single-chip I/O mouth needs to export antipodal level, and described relay 102 can adhesive.And in the middle of the process powered on, no matter the I/O port state of described single-chip microcomputer is defaulted as low level or high level, the state of the input port that described relay is all is consistent, there will not be some input port to be high level, other is low level situation.So this circuit can ensure in the middle of power up, relay can not misoperation.
Be illustrated in figure 4 in the specific embodiment of the invention preferred circuit figure increasing relay, if desired relay is increased, then according to circuit shown in Fig. 4, newly-increased relay 102 ' and corresponding driver module 103 ', and according to electric connecting relation, the input port 4 of newly-increased relay K 2 is connected in parallel input port 4 place of the relay K 1 shown in Fig. 3, the resistance R5 in corresponding driver module 103 ' is connected with the I/O port P1.2 of single-chip microcomputer.Increase relay to continue, then connect in the manner described above.
Compared with prior art, a kind of device of power up repeat circuit misoperation that prevents of the present invention reaches following effect:
1) invention increases the requirement of the reliability and stability of whole relay, effectively reduce the generation of relay misoperation;
2) apparatus structure of power up repeat circuit misoperation that prevents of the present invention is simple and easy, successful, and in common single chip circuit, the relay misoperation that can avoid powers on causes is done;
3) no matter wide accommodation of the present invention is above the lower consumer electronics of requirement, above the industrial products still requiring high reliability, can apply this circuit.
Above-mentioned explanation illustrate and describes some preferred embodiments of the present invention, but as previously mentioned, be to be understood that the present invention is not limited to the form disclosed by this paper, should not regard the eliminating to other embodiments as, and can be used for other combinations various, amendment and environment, and can in invention contemplated scope described herein, changed by the technology of above-mentioned instruction or association area or knowledge.And the change that those skilled in the art carry out and change do not depart from the spirit and scope of the present invention, then all should in the protection range of claims of the present invention.
Claims (1)
1. prevent a device for power up repeat circuit misoperation, be connected between single-chip microcomputer and external circuit, it is characterized in that, this device comprises: power supply makes energy control module, at least one relay and driver module; Wherein,
Described power supply makes energy control module, is connected with described relay with described single-chip microcomputer, for receiving the control signal that described single-chip I/O mouth sends, and determines whether that described relay is powered according to this control signal;
Described relay, makes energy control module with described power supply, driver module is connected with external circuit, for make energy control module provide electric energy in described power supply state under start, and according to the drive singal that described driver module exports, external circuit to be regulated;
Described driver module, is connected with relay with described single-chip microcomputer, for the I/O port control signal according to single-chip microcomputer, drives described relay work;
Wherein, described control signal is low and high level signal;
Wherein, described relay is electromagnetic type relay further;
Wherein, described power supply makes energy control module be made up of the first resistance and the second resistance and first triode;
Wherein, described driver module is made up of the 3rd resistance and the 4th resistance and second triode;
Wherein, the IO pin of described single-chip microcomputer is connected on described second resistance and the 3rd resistance;
Wherein, described first triode is PNP type triode further;
Wherein, described second triode is NPN type triode further.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210449487.2A CN102983041B (en) | 2012-11-12 | 2012-11-12 | Prevent the device of power up repeat circuit misoperation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210449487.2A CN102983041B (en) | 2012-11-12 | 2012-11-12 | Prevent the device of power up repeat circuit misoperation |
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| Publication Number | Publication Date |
|---|---|
| CN102983041A CN102983041A (en) | 2013-03-20 |
| CN102983041B true CN102983041B (en) | 2016-04-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210449487.2A Active CN102983041B (en) | 2012-11-12 | 2012-11-12 | Prevent the device of power up repeat circuit misoperation |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113410098B (en) * | 2021-06-30 | 2022-07-19 | 中车株洲电力机车研究所有限公司 | Safe drive circuit of relay |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2930942A (en) * | 1957-05-08 | 1960-03-29 | Levine Solomon | Complementary symmetry transistor coincidence detector |
| CN1131332A (en) * | 1994-12-31 | 1996-09-18 | Lg电子株式会社 | Relay driving apparatus for microwave oven and method thereof |
| CN2814770Y (en) * | 2005-05-24 | 2006-09-06 | 陈炳杰 | Double-electric source automatic changeover switch controller |
| CN102436972A (en) * | 2011-10-17 | 2012-05-02 | 河南汉威电子股份有限公司 | Output control circuit of differential relay |
| CN202917399U (en) * | 2012-11-12 | 2013-05-01 | 北京易艾斯德科技有限公司 | Apparatus for avoiding relay misoperation in power-on process |
-
2012
- 2012-11-12 CN CN201210449487.2A patent/CN102983041B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2930942A (en) * | 1957-05-08 | 1960-03-29 | Levine Solomon | Complementary symmetry transistor coincidence detector |
| CN1131332A (en) * | 1994-12-31 | 1996-09-18 | Lg电子株式会社 | Relay driving apparatus for microwave oven and method thereof |
| CN2814770Y (en) * | 2005-05-24 | 2006-09-06 | 陈炳杰 | Double-electric source automatic changeover switch controller |
| CN102436972A (en) * | 2011-10-17 | 2012-05-02 | 河南汉威电子股份有限公司 | Output control circuit of differential relay |
| CN202917399U (en) * | 2012-11-12 | 2013-05-01 | 北京易艾斯德科技有限公司 | Apparatus for avoiding relay misoperation in power-on process |
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|---|---|
| CN102983041A (en) | 2013-03-20 |
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