CN203313152U - Combined switch push-pull pulse output unit - Google Patents
Combined switch push-pull pulse output unit Download PDFInfo
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- CN203313152U CN203313152U CN2013203177555U CN201320317755U CN203313152U CN 203313152 U CN203313152 U CN 203313152U CN 2013203177555 U CN2013203177555 U CN 2013203177555U CN 201320317755 U CN201320317755 U CN 201320317755U CN 203313152 U CN203313152 U CN 203313152U
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Abstract
The utility model discloses a combined switch push-pull pulse output unit and relates to the electric power system and electric power system automation technology field. The combined switch push-pull pulse output unit comprises a one-chip microcomputer push-pull I/O port structure, a transition resistor and a driving and strengthening return circuit, wherein the one-chip microcomputer push-pull I/O port structure is electrically connected with the driving and strengthening return circuit through the transition resistor R1, and the output end of the driving and strengthening return circuit is connected with a silicon controlled rectifier gate pole through a capacitor C1. The push-pull pulse output unit is concise in hardware return circuit, high in pulse output precision, and good in controllability; the push-pull pulse output unit is free from high frequency pulses at silicon controlled rectifier triggering time; a combined switch circuit system is greatly improved in reliability; and the on-site operation stability of a combined switch is guaranteed.
Description
Technical field
The utility model relates to the Power System and its Automation technical field, exactly relates to the impulse circuit technical field in the intelligent low-pressure combination switch.
Background technology
The basic functional principle of low-voltage combination switch is by controllable silicon and magnetic latching relay and connects, realize that voltage zero-cross conducting and current over-zero cut off, make combination switch have advantages of the silicon control zero-cross switching in the moment switched on and off, and after connection, have the good characteristic of contact switch static properties.
Publication number is CN2870264, and the Chinese patent literature that open day is on February 14th, 2007 discloses a kind of combination switch; Comprise governor circuit, power circuit, thyristor throw-cut circuit, contactor switching circuit and control inputs circuit, governor circuit is connected with the control inputs circuit with power circuit, thyristor throw-cut circuit, contactor switching circuit respectively, and thyristor throw-cut circuit, contactor switching circuit are connected between triple line and power capacitor; Its switching process is carried out switching for first by governor circuit, controlling the thyristor throw-cut circuit, then governor circuit control contactor switching circuit carries out switching, like this, the switch of contactor circuit when switching has passed through the thyristor throw-cut circuit communication, the switch closure do not produce and shoves, cut-off and do not produce electric arc, simultaneously also avoided shoving impact to power capacitor, extended life-span of combination switch, guarantees the fail safe of switching process.
At present above-mentioned patent documentation be take during as the combination switch of representative in design in a lot of producers, silicon controlled trigger to adopt intrinsic pulse surely frequently shake the shake loop by gate and single-chip microcomputer pin output phase " with ", by what single-chip microcomputer carried out control wave, leave the moment, the finish time.Although solve and can trigger controllable silicon like this, also exist following problem simultaneously:
1, impulse hunting unit complexity, poor reliability;
2, the impulse hunting loop is subjected to a plurality of configuration device Accuracies such as electric capacity, resistance, and the pulse error is large;
3, generally between 10kHZ-100kHZ, frequency is higher for pulse frequency, the electromagnetic interference weight, and oscillator adjacent loop and single-chip microcomputer functional reliability are comparatively had a strong impact on.
Summary of the invention
The utility model is intended to for the existing deficiency of above-mentioned prior art, provide a kind of combination switch to recommend the pulse output unit, this is recommended, and pulse output unit hardware-in-the-loop is succinct, the pulse output accuracy is high, controllability good, at non-controllable silicon, trigger and there is no high-frequency impulse constantly, greatly improve the reliability of composite switch circuit system, guaranteed the stability of the on-the-spot operation of combination switch.
The utility model is by adopting following technical proposals to realize:
A kind of combination switch is recommended the pulse output unit, comprise that single-chip microcomputer recommends the I/O mouth structure, it is characterized in that: also include transition resistance and drive the enhancing loop, described single-chip microcomputer is recommended the I/O mouth structure and is electrically connected to driving the enhancing loop by transition resistance R1, drives the output that strengthens loop and connects the controllable silicon gate pole through capacitor C 1.
Described driving strengthens loop and comprises NPN type triode T1, NPN type triode T2, positive-negative-positive triode T3, resistance R 2 and resistance R 3, circuit connecting relation between them is: the collector electrode of NPN type triode T1 is connected with the base stage of positive-negative-positive triode T3 by resistance R 3, and resistance R 2 is connected in the base stage of NPN type triode T2 and positive-negative-positive triode T3 by resistance R 3; The emitter of NPN type triode T2 and positive-negative-positive triode T3 also connects, and the collector electrode of NPN type triode T2 is connected to+the 12V power supply, and the collector electrode of positive-negative-positive triode T3 is connected in place of working.
Compared with prior art, the beneficial effect that reaches of the utility model is as follows:
1, in the utility model, adopt the frame mode of " single-chip microcomputer is recommended the I/O mouth structure and is electrically connected to driving enhancing loop by transition resistance R1; driving strengthens the output in loop for connecting the controllable silicon gate pole ", the I/O mouth has the single-chip microcomputer of push-pull configuration, export when high, draw the electric current maximum can arrive 20mA; When output is low, fills with the electric current maximum and can bear 20mA;
When I/O mouth output high level, high level is controlled T1(NPN) the pipe conducting, the R3 prime is low level, T2(NPN) pipe cut-off, T3(PNP) pipe conducting, the C1 prime is low level;
When I/O mouth output low level, T1(NPN) pipe cut-off, the R3 prime is high level under the effect of pull-up resistor R2, T2(NPN) pipe conducting, T3(PNP) pipe cut-off, the C1 prime is high level;
The high and low level of I/O mouth output is controlled by single-chip microcomputer, and the high-low level time interval is by Timer Controlling, and thus, the duty ratio of CPU, pulse output frequency all can dynamically be adjusted by single-chip microcomputer.Under the control of single-chip microcomputer, the pulse of output is with the alternately variation of frequency of tens of kHZ, and C1 is the isolation electric current, and replacing of its prime changes in its rear class formation pulse train, and this pulse train can effectively trigger the silicon controlled conducting.
Thus, adopt structure of the present utility model, hardware-in-the-loop is succinct, the pulse output accuracy is high, controllability good, triggers and there is no high-frequency impulse constantly at non-controllable silicon, greatly improve the reliability of composite switch circuit system, guaranteed the stability of the on-the-spot operation of combination switch.
2, in the utility model, employing has the single-chip microcomputer of the output of recommending and drives the enhancing loop, hardware-in-the-loop is succinct, the pulse output accuracy is high, controllability good, because at non-controllable silicon, triggering and there is no the intrinsic pulse of high frequency constantly, greatly improve the reliability of composite switch circuit system, guaranteed the stability of the on-the-spot operation of combination switch.
The accompanying drawing explanation
The utility model is described in further detail below in conjunction with Figure of description, wherein:
Fig. 1 is circuit structure schematic diagram of the present utility model
Mark in figure:
1, single-chip microcomputer is recommended the I/O mouth structure, and 2, latch data, 3, drive and strengthen loop, 4, the controllable silicon gate pole.
Embodiment
With reference to Figure of description 1, the utility model discloses a kind of combination switch and recommend the pulse output unit, comprise that single-chip microcomputer recommends I/O mouth structure 1, single-chip microcomputer is recommended I/O mouth structure 1 and is the prior art in this area, and the I/O mouth of a lot of single-chip microcomputers all has push-pull configuration.On this basis, the utility model also includes transition resistance and strengthens loop 3 with driving, and described single-chip microcomputer is recommended I/O mouth structure 1 and is electrically connected to driving enhancing loop 3 by transition resistance R1, drives the output that strengthens loop 3 and connects controllable silicon gate pole 4 through capacitor C 1.
Described driving strengthens loop 3 and comprises NPN type triode T1, NPN type triode T2, positive-negative-positive triode T3, resistance R 2 and resistance R 3, circuit connecting relation between them is: the collector electrode of NPN type triode T1 is connected with the base stage of positive-negative-positive triode T3 by resistance R 3, and resistance R 2 is connected in the base stage of NPN type triode T2 and positive-negative-positive triode T3 by resistance R 3; The emitter of NPN type triode T2 and positive-negative-positive triode T3 also connects, and the collector electrode of NPN type triode T2 is connected to+the 12V power supply, and the collector electrode of positive-negative-positive triode T3 is connected in place of working.
Described single-chip microcomputer itself has the I/O of recommending mouth structure, both can input the filling electric current of 20mA, the also electric current of exportable 20mA, and this structure is existing this body structure of single-chip microcomputer.
The utility model has adopted a output I/O mouth to have the single-chip microcomputer of push-pull configuration.Export when high, draw the electric current maximum can arrive 20mA; When output is low, fills with the electric current maximum and can bear 20mA.
When I/O mouth output high level, high level is controlled T1(NPN) the pipe conducting, the R3 prime is low level, T2(NPN) pipe cut-off, T3(PNP) pipe conducting, the C1 prime is low level;
When I/O mouth output low level, T1(NPN) pipe cut-off, the R3 prime is high level under the effect of pull-up resistor R2, T2(NPN) pipe conducting, T3(PNP) pipe cut-off, the C1 prime is high level;
The high and low level of I/O mouth output is controlled by CPU, and the high-low level time interval is by Timer Controlling, and thus, the duty ratio of CPU, pulse output frequency all can dynamically be adjusted by CPU.Under the control of CPU, the output pulse alternately changes with the frequency of tens of kHZ.C1 is the isolation electric current, and the alternately variation of its prime forms pulse train in its rear class, and this pulse train can effectively trigger the silicon controlled conducting.
Claims (2)
1. a combination switch is recommended the pulse output unit, comprise that single-chip microcomputer recommends I/O mouth structure (1), it is characterized in that: also include transition resistance and drive enhancing loop (3), described single-chip microcomputer is recommended I/O mouth structure (1) and is electrically connected to driving enhancing loop (3) by transition resistance R1, drives the output that strengthens loop (3) and connects controllable silicon gate pole (4) through capacitor C 1.
2. combination switch according to claim 1 is recommended the pulse output unit, it is characterized in that: described driving strengthens loop (3) and comprises NPN type triode T1, NPN type triode T2, positive-negative-positive triode T3, resistance R 2 and resistance R 3, circuit connecting relation between them is: the collector electrode of NPN type triode T1 is connected with the base stage of positive-negative-positive triode T3 by resistance R 3, and resistance R 2 is connected in the base stage of NPN type triode T2 and positive-negative-positive triode T3 by resistance R 3; The emitter of NPN type triode T2 and positive-negative-positive triode T3 also connects, and the collector electrode of NPN type triode T2 is connected to+the 12V power supply, and the collector electrode of positive-negative-positive triode T3 is connected in place of working.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203177555U CN203313152U (en) | 2013-06-04 | 2013-06-04 | Combined switch push-pull pulse output unit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203177555U CN203313152U (en) | 2013-06-04 | 2013-06-04 | Combined switch push-pull pulse output unit |
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| CN203313152U true CN203313152U (en) | 2013-11-27 |
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| CN2013203177555U Expired - Lifetime CN203313152U (en) | 2013-06-04 | 2013-06-04 | Combined switch push-pull pulse output unit |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106208780A (en) * | 2016-03-01 | 2016-12-07 | 四川行之智汇知识产权运营有限公司 | A kind of power supply inverter |
| CN106208792A (en) * | 2016-03-01 | 2016-12-07 | 四川行之智汇知识产权运营有限公司 | A kind of inverter power supply device |
| CN113381741A (en) * | 2021-06-17 | 2021-09-10 | 烟台环球机床装备股份有限公司 | Variable-level differential single-ended switchable pulse output circuit |
-
2013
- 2013-06-04 CN CN2013203177555U patent/CN203313152U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106208780A (en) * | 2016-03-01 | 2016-12-07 | 四川行之智汇知识产权运营有限公司 | A kind of power supply inverter |
| CN106208792A (en) * | 2016-03-01 | 2016-12-07 | 四川行之智汇知识产权运营有限公司 | A kind of inverter power supply device |
| CN113381741A (en) * | 2021-06-17 | 2021-09-10 | 烟台环球机床装备股份有限公司 | Variable-level differential single-ended switchable pulse output circuit |
| CN113381741B (en) * | 2021-06-17 | 2022-03-04 | 烟台环球机床装备股份有限公司 | Variable-level differential single-ended switchable pulse output circuit |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20131127 |
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| CX01 | Expiry of patent term |