CN202275293U - Shutdown control circuit and transient emission system having same - Google Patents
Shutdown control circuit and transient emission system having same Download PDFInfo
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- CN202275293U CN202275293U CN2011203556213U CN201120355621U CN202275293U CN 202275293 U CN202275293 U CN 202275293U CN 2011203556213 U CN2011203556213 U CN 2011203556213U CN 201120355621 U CN201120355621 U CN 201120355621U CN 202275293 U CN202275293 U CN 202275293U
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Abstract
The utility model provides a shutdown control circuit which includes a one-chip microcomputer, a first relay, a second relay, a switch with one end being connected with the ground, a first not gate logic circuit connected with the switch, a second not gate logic circuit connected with the first not gate logic circuit and the one-chip microcomputer, a third not gate logic circuit and a fourth not gate logic circuit connected with the one-chip microcomputer respectively. The third not gate logic circuit is connected with a fourth relay via a second reverse driver. The fourth not gate logic circuit is connected with a third relay via a first reverse driver. The fourth relay is connected with the first relay and the third relay is connected with the second relay. The control circuit is applied to a transient emission system to firstly cut off an emission driving power supply and then cut off a working power supply, so the system shutdown process is simplified, and an IGBT module is protected from damage caused by misoperation, and consequently the unnecessary economic loss is avoided.
Description
Technical field
The utility model relates to power domain, relates in particular to a kind of shutdown control circuit and has the transition emission coefficient of this shutdown control circuit.
Background technology
Comprise working power and emission driving power in the transition emission coefficient, wherein working power is the total system power supply, and the emission driving power is the transmitter module power supply.The working power off switch adopts split-type design with emission driving power off switch, respectively through circuit, and the shutoff of control system power supply and transmitter module power supply.When system closedown; If close working power earlier, circuit system can moment produce big electric current and damage insulated gate bipolar transistor (Insulated Gate Bipolar Transistor, IGBT); So should press emission driving power off switch earlier; Close the emission driving power, press the working power off switch again, the shutdown system working power.It is thus clear that system operators need be operated in strict accordance with working specification, operating process is comparatively loaded down with trivial details; And; In real work, have artificial carelessness unavoidably, in case and operating personnel have closed working power before the driving power closing emission; IGBT is damaged, thereby cause economic loss.
Can find out that in sum the structure of the shutdown control circuit in the existing transition emission coefficient causes its complicated operation, and security is lower.
The utility model content
In view of this, the utility model provides a kind of shutdown control circuit, to solve transition emission coefficient shutdown control circuit complicated operation, the problem that security is low.
A kind of shutdown control circuit comprises single-chip microcomputer, opens or closes first relay and unlatching of launching driving power or second relay of closing working power, also comprises:
The switch of closing working power of one end ground connection; The said switch other end links to each other with the input end of first NOT gate logic circuit; The output terminal of said first NOT gate logic circuit links to each other with the input end of second NOT gate logic circuit; The output terminal of said second NOT gate logic circuit links to each other with the look-at-me input pin of said single-chip microcomputer; The first interrupt response signal output pin of said single-chip microcomputer links to each other with the input end of the 3rd NOT gate logic circuit, and the output terminal of said the 3rd NOT gate logic circuit links to each other with the input pin of first reverse driven; The output terminal of said first reverse driven and the 3rd relay; The signal input part that the control moving contact is communicated with normally opened contact links to each other; The normally opened contact of said the 3rd relay and said second relay, the signal input part that the control moving contact is communicated with normally closed contact links to each other; When said switch was pressed, the moving contact of said the 3rd relay connected corresponding normally opened contact, and the moving contact of said second relay connects corresponding long closed contact, to cut off said emission driving power;
The second interrupt response signal output pin of said single-chip microcomputer links to each other with the input end of the 4th NOT gate logic circuit, and the output terminal of said the 4th NOT gate logic circuit links to each other with the input end of second reverse driven; The output terminal of said second reverse driven and the 4th relay; The signal input part that the control moving contact is communicated with normally opened contact links to each other; The normally opened contact of said the 4th relay and said first relay, the signal input part that the control moving contact is communicated with normally closed contact links to each other, and connects the normally opened contact of correspondence when the moving contact of said the 3rd relay; After the moving contact of said second relay connects corresponding long closed contact; The moving contact of said the 4th relay connects corresponding normally opened contact, and the moving contact of said first relay connects described normally closed contact, to cut off said working power.
Preferably, also comprise: first diode and second diode;
The positive pole of said first diode and said the 3rd relay, the signal input part that the control moving contact is communicated with normally opened contact links to each other, the negative pole of said first diode and said the 3rd relay, the signal input part that the control moving contact is communicated with normally closed contact links to each other;
The positive pole of said second diode and said the 4th relay, the signal input part that the control moving contact is communicated with normally opened contact links to each other, the negative pole of said second diode and said the 4th relay, the signal input part that the control moving contact is communicated with normally closed contact links to each other.
Preferably, also comprise: electrochemical capacitor;
Said electrochemical capacitor minus earth, positive pole are connected between said switch and said first NOT gate logic circuit, and said electrochemical capacitor is parallelly connected with first resistance, and said first resistance links to each other with the 5V direct supply.
Preferably, said first NOT gate logic circuit, second NOT gate logic circuit, the 3rd NOT gate logic circuit and the 4th NOT gate logic circuit are integrated in the chip piece.
Preferably, said first reverse driven and second reverse driven are integrated in the chip piece.
Preferably, said the 3rd relay also comprises:
The moving contact of said the 3rd a relay self-locking of control, and and corresponding normally opened contact of said moving contact and normally closed contact.
Preferably, said the 4th relay also comprises:
The moving contact of said the 4th a relay self-locking of control, and and corresponding normally opened contact of said moving contact and normally closed contact.
A kind of transition emission coefficient comprises:
Above-mentioned shutdown control circuit.
The shutdown control circuit that the utility model embodiment provides; Changed the circuit connecting mode of working power off switch in the original system circuit; Make that when pressing the working power off switch control circuit after the change cuts off working power after can cutting off the emission driving power earlier again, has not only simplified the flow process of system closedown; And can also protect the IGBT module, thereby avoided unnecessary economic loss not because of maloperation damages.
Description of drawings
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art; To do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below; Obviously, the accompanying drawing in describing below only is some embodiment of the utility model, for those of ordinary skills; Under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the disclosed a kind of shutdown control circuit structural representation of the utility model embodiment;
Fig. 2 is disclosed another the shutdown control circuit structural representation of the utility model embodiment;
Fig. 3 is disclosed another the shutdown control circuit structural representation of the utility model embodiment;
Fig. 4 is disclosed another the shutdown control circuit structural representation of the utility model embodiment.
Embodiment
The utility model provides a kind of shutdown control circuit; This shutdown control circuit is transformed the working power shut-off circuit of existing transition emission coefficient; The working power off switch is linked to each other through the relay of components and parts with control emission driving power; When making closed said working power switch, the emission driving power is closed, working power is closed through said control circuit.
To combine the accompanying drawing among the utility model embodiment below, the technical scheme among the utility model embodiment is carried out clear, intactly description, obviously, described embodiment only is the utility model part embodiment, rather than whole embodiment.Based on the embodiment in the utility model, those of ordinary skills are not making the every other embodiment that is obtained under the creative work prerequisite, all belong to the scope of the utility model protection.
A kind of shutdown control circuit; Be used for the transition emission coefficient; As shown in Figure 1; Comprise: the switch 101 that is used to close transition emission coefficient working power of an end ground connection; The said switch other end links to each other with the input end of first NOT gate logic circuit 102, and the output terminal of said first NOT gate logic circuit links to each other with the input end of second NOT gate logic circuit 103, and the output terminal of said second NOT gate logic circuit links to each other with the look-at-me input pin of single-chip microcomputer 104; The first interrupt response signal output pin of said single-chip microcomputer links to each other with the input end of the 3rd NOT gate logic circuit 105, and the output terminal of said the 3rd NOT gate logic circuit links to each other with the input pin of first reverse driven 106; The signal input part that the control moving contact of the output terminal of said first reverse driven and the 3rd relay 107 is communicated with normally opened contact links to each other, and the normally opened contact of said the 3rd relay and unlatching or the signal input part of control moving contact connection normally closed contact of closing second relay 108 of said system works power supply link to each other; When said switch was pressed, the moving contact of said the 3rd relay connected corresponding normally opened contact, and the moving contact of said second relay connects corresponding normally closed contact;
The second interrupt response signal output pin of said single-chip microcomputer links to each other with the input end of the 4th NOT gate logic circuit 109, and the output terminal of said the 4th NOT gate logic circuit links to each other with the input end of second reverse driven 110; The output terminal of said second reverse driven links to each other with the signal input part that the control moving contact of the 4th relay 111 is communicated with normally opened contact; The signal input part that the normally opened contact of said the 4th relay and unlatching or the control moving contact of closing first relay 112 of emission driving power are communicated with normally closed contact links to each other; The normally opened contact that connects correspondence when the moving contact of said the 3rd relay; After the moving contact of said second relay connects corresponding normally closed contact; The moving contact of said the 4th relay connects corresponding normally opened contact, and the moving contact of said first relay connects described normally closed contact.
The course of work of said shutdown control circuit is: when the switch of cutting out working power of a said end ground connection pressed, the other end of said switch was communicated with ground, was equivalent to the input end input low level of first NOT gate logic circuit; Characteristic according to NOT gate logic circuit can know, first NOT gate logic circuit output terminal output high level, this high level convert low level into after through second NOT gate logic circuit; The effective look-at-me input pin of low level of input single-chip microcomputer, this interrupt request singal of single-chip microcomputer response is given the 3rd NOT gate logic circuit through the signal that any one the pin output expression with output function stops; Said stop signal through the 3rd NOT gate logic circuit reciprocal transformation after; Carry out oppositely and strengthen the back via first reverse driven again forming low level signal, this low level signal is imported the signal input part of the control moving contact connection normally opened contact of the 3rd relay, i.e. coil negative terminal (12 pin); The 3rd relay is worked on power; The moving contact of the 3rd relay connects with corresponding normally opened contact, and then is communicated with the signal input part of the control moving contact connection normally closed contact of second relay, i.e. coil anode (1 pin); Second relay electric-loss is quit work; Thereby its moving contact breaks off with normally opened contact to the emission drive circuitry, and is communicated with corresponding normally closed contact, thereby has cut off the emission driving power.
When above-mentioned process end of closing the emission driving power, behind the 1000mS that promptly delays time, single-chip microcomputer sends stop signal again; This stop signal sends to the 4th NOT gate logic circuit through the second interrupt response signal output pin, through the 4th NOT gate logic circuit reverse after, import second reverse driven and carry out once more reverse and strengthen; Send to 12 pin of the 4th relay then; The 4th relay is worked on power, and the normally opened contact that the moving contact of the 4th relay is corresponding with it is communicated with, and then is communicated with 1 pin of first relay; First relay electric-loss is quit work; Thereby the moving contact of first relay breaks off with the normally opened contact of supplying power to emission coefficient, and is communicated with corresponding normally closed contact, thereby has cut off the working power of system.
The disclosed shutdown control circuit of present embodiment; When pressing the working power off switch; Can close the emission driving power earlier and stop to launch, close working power again and accomplish shutdown, thereby avoid because in the problem of closing the IGBT module damage that causes with regard to closing working power before the emission driving.
Further, as shown in Figure 2, shutdown control circuit also comprises first diode 201 that links to each other with said the 3rd relay and second diode 202 that links to each other with said the 4th relay.First diode cathode links to each other with 12 pin of the 3rd relay, and negative pole links to each other with 1 pin of the 3rd relay; Second diode cathode links to each other with 12 pin of the 4th relay, and negative pole links to each other with 1 pin of the 4th relay.
First diode and second diode play the absorption inverse peak voltage respectively, and then protect the effect of the coil of the 3rd relay and the 4th relay.
Further, as shown in Figure 3, shutdown control circuit also comprises electrochemical capacitor 301; Said electrochemical capacitor minus earth; Positive pole is connected between said switch and said first NOT gate logic circuit, and said electrochemical capacitor is parallelly connected with first resistance 302, and said first resistance links to each other with the direct supply of 5V.
Electrochemical capacitor can play jamproof effect, thereby can strengthen the reliability of shutdown control circuit.
Further, said first NOT gate logic circuit, second NOT gate logic circuit, the 3rd NOT gate logic circuit and the 4th NOT gate logic circuit can be integrated on the chip piece.Preferably, use Schmidt 6 not gate logic chip IC207 in the present embodiment, select for use four NOT gate logic circuits wherein to get final product, those skilled in the art also can select other the integrated chip that can realize constructed effect.
Said first reverse driven and second reverse driven also can be integrated in the chip piece.Preferably, use integrated reverse driven MC1413 in the present embodiment, but be not limited to this.
Four NOT gate logic circuits or two method phase drivers are integrated on the chip, help reducing the quantity of the components and parts in the circuit, can improve the life-span and the reliability of circuit.
Further, as shown in Figure 4, in said the 3rd relay and the 4th relay, all can increase a moving contact and and corresponding normally opened contact of said moving contact and normally closed contact.
The purpose that increases the contact in the present embodiment is that when relay was in steady-working state, the moving contact of increase can be communicated with normally opened contact, and relay is carried out self-locking, guarantees the steady operation of circuit.
A kind of transition emission coefficient that the utility model provides comprises: the shutdown control circuit that above embodiment describes, and control the circuit of said system works electric power starting and control the circuit that the emission driving power is opened in the said system.
The transition emission coefficient that present embodiment provides; The shutoff of emission driving power and system works power supply concentrated in the circuit control; As long as press the switch in the said shutdown control circuit; Just can realize closing the shutdown process that the emission driving power is closed working power more earlier, both simplify shutdown process, also can not cause the damage of IGBT module because of misoperation.
The disclosed transition emission coefficient of present embodiment can only comprise the shutdown control circuit in the foregoing description; Also can comprise emission driving power off switch of the prior art simultaneously; Thereby can realize independent control to transmitter module; To be implemented under the situation that guarantees system works, close the purpose of transmitter module, make that the operation of system is more flexible.
Each embodiment adopts the mode of going forward one by one to describe in this instructions, and what each embodiment stressed all is and the difference of other embodiment that same or similar part is mutually referring to getting final product between each embodiment.
To the above-mentioned explanation of the disclosed embodiments, make this area professional and technical personnel can realize or use the utility model.Multiple modification to these embodiment will be conspicuous concerning those skilled in the art, and defined General Principle can realize under the situation of spirit that does not break away from the utility model or scope in other embodiments among this paper.Therefore, the utility model will can not be restricted to these embodiment shown in this paper, but will meet and principle disclosed herein and features of novelty the wideest corresponding to scope.
Claims (8)
1. a shutdown control circuit comprises single-chip microcomputer, opens or closes first relay and unlatching of launching driving power or second relay of closing working power, it is characterized in that, also comprises:
The switch of closing working power of one end ground connection; The said switch other end links to each other with the input end of first NOT gate logic circuit; The output terminal of said first NOT gate logic circuit links to each other with the input end of second NOT gate logic circuit; The output terminal of said second NOT gate logic circuit links to each other with the look-at-me input pin of said single-chip microcomputer; The first interrupt response signal output pin of said single-chip microcomputer links to each other with the input end of the 3rd NOT gate logic circuit, and the output terminal of said the 3rd NOT gate logic circuit links to each other with the input pin of first reverse driven; The output terminal of said first reverse driven and the 3rd relay; The signal input part that the control moving contact is communicated with normally opened contact links to each other; The normally opened contact of said the 3rd relay and said second relay, the signal input part that the control moving contact is communicated with normally closed contact links to each other; When said switch was pressed, the moving contact of said the 3rd relay connected corresponding normally opened contact, and the moving contact of said second relay connects corresponding long closed contact, to cut off said emission driving power;
The second interrupt response signal output pin of said single-chip microcomputer links to each other with the input end of the 4th NOT gate logic circuit, and the output terminal of said the 4th NOT gate logic circuit links to each other with the input end of second reverse driven; The output terminal of said second reverse driven and the 4th relay; The signal input part that the control moving contact is communicated with normally opened contact links to each other; The normally opened contact of said the 4th relay and said first relay, the signal input part that the control moving contact is communicated with normally closed contact links to each other, and connects the normally opened contact of correspondence when the moving contact of said the 3rd relay; After the moving contact of said second relay connects corresponding long closed contact; The moving contact of said the 4th relay connects corresponding normally opened contact, and the moving contact of said first relay connects described normally closed contact, to cut off said working power.
2. circuit according to claim 1 is characterized in that, also comprises: first diode and second diode;
The positive pole of said first diode and said the 3rd relay, the signal input part that the control moving contact is communicated with normally opened contact links to each other, the negative pole of said first diode and said the 3rd relay, the signal input part that the control moving contact is communicated with normally closed contact links to each other;
The positive pole of said second diode and said the 4th relay, the signal input part that the control moving contact is communicated with normally opened contact links to each other, the negative pole of said second diode and said the 4th relay, the signal input part that the control moving contact is communicated with normally closed contact links to each other.
3. circuit according to claim 1 is characterized in that, also comprises: electrochemical capacitor;
Said electrochemical capacitor minus earth, positive pole are connected between said switch and said first NOT gate logic circuit, and said electrochemical capacitor is parallelly connected with first resistance, and said first resistance links to each other with the 5V direct supply.
4. circuit according to claim 1 is characterized in that, said first NOT gate logic circuit, second NOT gate logic circuit, the 3rd NOT gate logic circuit and the 4th NOT gate logic circuit are integrated in the chip piece.
5. circuit according to claim 1 is characterized in that, said first reverse driven and second reverse driven are integrated in the chip piece.
6. circuit according to claim 1 is characterized in that, said the 3rd relay also comprises:
The moving contact of said the 3rd a relay self-locking of control, and and corresponding normally opened contact of said moving contact and normally closed contact.
7. circuit according to claim 1 is characterized in that, said the 4th relay also comprises:
The moving contact of said the 4th a relay self-locking of control, and and corresponding normally opened contact of said moving contact and normally closed contact.
8. a transition emission coefficient is characterized in that, comprising:
Each described shutdown control circuit of claim 1 to 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203556213U CN202275293U (en) | 2011-09-21 | 2011-09-21 | Shutdown control circuit and transient emission system having same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203556213U CN202275293U (en) | 2011-09-21 | 2011-09-21 | Shutdown control circuit and transient emission system having same |
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| Publication Number | Publication Date |
|---|---|
| CN202275293U true CN202275293U (en) | 2012-06-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203556213U Expired - Fee Related CN202275293U (en) | 2011-09-21 | 2011-09-21 | Shutdown control circuit and transient emission system having same |
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| Country | Link |
|---|---|
| CN (1) | CN202275293U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103448391A (en) * | 2013-09-30 | 2013-12-18 | 北京美科艺数码科技发展有限公司 | Inkjet printing device |
| CN111162766A (en) * | 2020-01-21 | 2020-05-15 | 公安部第一研究所 | Power management system of integrated X-ray security inspection equipment |
-
2011
- 2011-09-21 CN CN2011203556213U patent/CN202275293U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103448391A (en) * | 2013-09-30 | 2013-12-18 | 北京美科艺数码科技发展有限公司 | Inkjet printing device |
| CN103448391B (en) * | 2013-09-30 | 2016-03-30 | 北京美科艺数码科技发展有限公司 | A kind of inkjet-printing device |
| CN111162766A (en) * | 2020-01-21 | 2020-05-15 | 公安部第一研究所 | Power management system of integrated X-ray security inspection equipment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120613 Termination date: 20150921 |
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| EXPY | Termination of patent right or utility model |