CN106817120A - Drive circuit with enhancing bus driver energy force-summing device short-circuit protection function - Google Patents
Drive circuit with enhancing bus driver energy force-summing device short-circuit protection function Download PDFInfo
- Publication number
- CN106817120A CN106817120A CN201710021440.9A CN201710021440A CN106817120A CN 106817120 A CN106817120 A CN 106817120A CN 201710021440 A CN201710021440 A CN 201710021440A CN 106817120 A CN106817120 A CN 106817120A
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- China
- Prior art keywords
- triode
- optocoupler
- pins
- bus
- circuit
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Classifications
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K19/00—Logic circuits, i.e. having at least two inputs acting on one output; Inverting circuits
- H03K19/0175—Coupling arrangements; Interface arrangements
- H03K19/017509—Interface arrangements
- H03K19/017536—Interface arrangements using opto-electronic devices
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/042—Programme control other than numerical control, i.e. in sequence controllers or logic controllers using digital processors
- G05B19/0423—Input/output
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03B—GENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS
- H03B1/00—Details
- H03B1/02—Structural details of power oscillators, e.g. for heating
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K19/00—Logic circuits, i.e. having at least two inputs acting on one output; Inverting circuits
- H03K19/007—Fail-safe circuits
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K19/00—Logic circuits, i.e. having at least two inputs acting on one output; Inverting circuits
- H03K19/0175—Coupling arrangements; Interface arrangements
- H03K19/017545—Coupling arrangements; Impedance matching circuits
- H03K19/017572—Coupling arrangements; Impedance matching circuits using opto-electronic devices
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/20—Pc systems
- G05B2219/21—Pc I-O input output
- G05B2219/21014—Interface, module with relays
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- Computing Systems (AREA)
- General Engineering & Computer Science (AREA)
- Mathematical Physics (AREA)
- Electromagnetism (AREA)
- General Physics & Mathematics (AREA)
- Automation & Control Theory (AREA)
- Fire Alarms (AREA)
- Alarm Systems (AREA)
Abstract
The invention discloses a kind of drive circuit with enhancing bus driver energy force-summing device short-circuit protection function, including protection circuit and output circuit, protection circuit includes optocoupler N5, electric capacity C19, triode V13；Optocoupler N5 pins 4 meet power vd D, and pin 1 connects triode V13 colelctor electrodes；Electric capacity C19 connects optocoupler N5 pins 1,2 simultaneously；Output circuit includes optocoupler N6, triode V15, V16, electric capacity C20, Darlington triode V14 and bus S1；Optocoupler N6 pins 1 connect optocoupler N5 pins 4, and pin 3 connects triode V16 base stages, and pin 4 connects Darlington triode V14 base stages；Darlington triode V14 colelctor electrodes meet bus S1；Triode V15 base stages connect triode V16 colelctor electrodes, and colelctor electrode meets bus S1；Electric capacity C20 meets bus S1 and power supply VCC simultaneously.The enhancing of the achievable bus driver ability of the present invention；Meanwhile, when ancillary equipment breaks down, effective short-circuit protection can be carried out to it.
Description
Technical field
The present invention relates to technical field of fire control, and in particular to one kind has enhancing bus driver energy force-summing device short-circuit protection
The drive circuit of function.
Background technology
The drive circuit of existing fire alarm control unit, designs complex, takes up room larger, is difficult layout, and
Designer is required higher.Most of all, existing drive circuit, its output current is smaller, is set for small-power periphery
For its work of energy driven, but if accessing high-power peripheral, then effect on driving birds is not good is driven, it is impossible to ensure ancillary equipment
Normal work.Also, existing fire alarm control unit is during accessing ancillary equipment and controlling ancillary equipment to work, if
Ancillary equipment breaks down (such as short circuit), and it can not realize the effective protection to ancillary equipment, it is easy to trigger safe thing
Therefore.Therefore, it is necessary to be improved to the existing driving circuit section for being applied to fire alarm control unit.
The content of the invention
For the deficiency of above-mentioned technology, there is enhancing bus driver energy force-summing device short-circuit protection the invention provides one kind
The drive circuit of function, is capable of achieving the enhancing of bus driver ability, drives high-power peripheral normal work, and realize periphery
The extension of equipment；Meanwhile, when ancillary equipment breaks down, effective short-circuit protection can be carried out to it.
To achieve the above object, the technical solution adopted by the present invention is as follows：
Drive circuit with enhancing bus driver energy force-summing device short-circuit protection function, including protection circuit and output electricity
Road, wherein：
The protection circuit includes optocoupler N5, electric capacity C19, triode V13；The optocoupler N5 pins 4 are via a pull-up
Resistance R31 meets power vd D, and optocoupler N5 pins 3 are grounded via a pull down resistor R34, and pin 1 connects triode V13 colelctor electrodes；Institute
State and a little melt the termination optocoupler N5 of C19 mono- pins 1, another termination optocoupler N5 pins 2；The triode V13 emitter stages meet power supply VCC；
The output circuit includes optocoupler N6, triode V15, V16, electric capacity C20, Darlington triode V14 and bus S1；
The optocoupler N6 pins 1 connect optocoupler N5 pins 4, and optocoupler N6 pins 3 meet triode V16 base stages and power supply VCC simultaneously, and pin 4 connects
Darlington triode V14 base stages；The Darlington triode V14 emitter stages meet power supply VCC, and colelctor electrode connects bus S1 and electricity simultaneously
Source VCC；The triode V16 emitter and collectors meet power supply VCC；The triode V15 base stages connect triode V16 current collections
Pole, emitter stage meets power supply VCC, and colelctor electrode meets bus S1；The point melts C20 mono- terminated bus S1, another termination power VCC；
The optocoupler N5 pins 2 meet bus S1, and the triode V13 emitter stages connect Darlington triode V14 base stages.
Further, it is also associated with resistance R32 between the optocoupler N5 pins 1,2.
Yet further, the triode V15 base stages also meet power supply VCC by resistance R39.
Compared with prior art, the invention has the advantages that：
(1) circuit design of the present invention is simple, with low cost, occupy little space, be laid out convenience.
(2) present invention combines design using protection circuit and the effective of output circuit so that whole circuit can be exported greatly
Electric current, so as to significantly enhance the driving force of bus, it is ensured that the normal work of ancillary equipment, while also making fire alarm control
The control efficiency of device processed has obtained significantly improving.
(3) isolation characteristic of present invention skilful use optocoupler, on the basis of design of integer electro-circuit is combined, realizes outer in bus
Short-circuit protection when peripheral equipment breaks down, it is to avoid device is damaged, so as to eliminate potential safety hazard.
(4) it is all linked with one another in circuit design of the present invention, complement each other, be closely connected, thus form a performance all good
Bus driving circuits, for effectively expand bus application provide guarantee.The present invention is suitable to be promoted in technical field of fire control
Using.
Brief description of the drawings
Fig. 1 is circuit structure diagram of the invention.
Specific embodiment
The invention will be further described with embodiment for explanation below in conjunction with the accompanying drawings, and mode of the invention includes but not only limits
In following examples.
As shown in figure 1, the invention provides a kind of achievable bus output high current and the driving electricity of ancillary equipment protection
Road, is mainly made up of protection circuit and output circuit two parts.Described protection circuit is used to realize that the periphery of connection bus sets
It is standby when breaking down to circuit components and the short-circuit protection of ancillary equipment, the protection circuit include optocoupler N5, electric capacity C19,
Triode V13.The optocoupler N5 pins 4 meet power vd D via a pull-up resistor R31, and optocoupler N5 pins 3 are drop-down via one
Resistance R34 is grounded, and pin 1 connects triode V13 colelctor electrodes via a resistance R30.The electric capacity C19 mono- terminates optocoupler N5 pins
1, another termination optocoupler N5 pins 2；The triode V13 emitter stages meet power supply VCC.In addition, also connecting between optocoupler N5 pins 1,2
It is connected to resistance R32.
Described output circuit is used to access ancillary equipment, and exports enable, realizes the control to ancillary equipment work, should
Output circuit includes optocoupler N6, triode V15, V16, electric capacity C20, Darlington triode V14 and bus S1.The optocoupler N6 draws
Pin 1 connects optocoupler N5 pins 4, and optocoupler N6 pins 3 connect triode V16 base stages simultaneously and power supply VCC (connects three via a resistance R38
Pole pipe V16 base stages, power supply VCC is met via a resistance R40), pin 4 connects Darlington triode V14 bases via a resistance R35
Pole.The Darlington triode V14 emitter stages meet power supply VCC, and colelctor electrode meets bus S1 and power supply VCC (via an electricity simultaneously
Resistance R37 meets power supply VCC).The triode V16 emitter and collectors meet power supply VCC, and (colelctor electrode is via a resistance R36
Meet power supply VCC).The triode V15 base stages connect triode V16 colelctor electrodes, and the base stage also connects power supply by resistance R39
VCC, triode V15 emitter stages meet power supply VCC via a resistance R41, and colelctor electrode meets bus S1；The electric capacity C20 mono- is terminated
Bus S1, another termination power VCC.The optocoupler N5 pins 2 meet bus S1, the triode V13 hairs via a resistance R33
Emitter-base bandgap grading connects Darlington triode V14 base stages via resistance a R29 and R35 successively.
When the present invention is used, optocoupler N5 pins 3 and optocoupler N6 pins 2 are accessed the monolithic in fire alarm control unit simultaneously
Machine, then bus S1 connection ancillary equipment, you can realize driven and the control of ancillary equipment.The achievable bus of the present invention is driven
The enhancing (output current can reach 10 amperes) of kinetic force, so that the big power consuming device normal work of drive part, so also effective
Realize the extension of ancillary equipment, the control efficiency of fire alarm control unit is significantly improved.Meanwhile, the present invention is also
Possesses the protective capability to itself circuit components and ancillary equipment, when bus exports high current, protection circuit can be reduced
The infringement suffered by component in output circuit, and when there is ancillary equipment short circuit or open fault, protection circuit can be right
Ancillary equipment carries out short-circuit protection.
The present invention, with simple circuit structure, realizes the enhancing of bus driver ability and right by rational design
Short-circuit protection of the equipment when breaking down.The present invention not only circuit layout facilitate, occupy little space, it is with low cost and right
Designer is less demanding.Therefore, the present invention greatly improves the performance of drive circuit, its compared with prior art, with prominent
The substantive distinguishing features for going out and significant progress.
Above-described embodiment is only one of the preferred embodiment of the present invention, should not be taken to limit protection model of the invention
Enclose, it is all body design thought of the invention and mentally make have no the change of essential meaning or polishing, what it was solved
Technical problem is still consistent with the present invention, should be included within protection scope of the present invention.
Claims (3)
1. there is the drive circuit of enhancing bus driver energy force-summing device short-circuit protection function, it is characterised in that including protection electricity
Road and output circuit, wherein：
The protection circuit includes optocoupler N5, electric capacity C19, triode V13；The optocoupler N5 pins 4 are via a pull-up resistor
R31 meets power vd D, and optocoupler N5 pins 3 are grounded via a pull down resistor R34, and pin 1 connects triode V13 colelctor electrodes；The point
Melt the termination optocoupler N5 of C19 mono- pins 1, another termination optocoupler N5 pins 2；The triode V13 emitter stages meet power supply VCC；
The output circuit includes optocoupler N6, triode V15, V16, electric capacity C20, Darlington triode V14 and bus S1；It is described
Optocoupler N6 pins 1 connect optocoupler N5 pins 4, and optocoupler N6 pins 3 meet triode V16 base stages and power supply VCC simultaneously, and pin 4 accesses woods
Triode V14 base stages；The Darlington triode V14 emitter stages meet power supply VCC, and colelctor electrode connects bus S1 and power supply simultaneously
VCC；The triode V16 emitter and collectors meet power supply VCC；The triode V15 base stages connect triode V16 current collections
Pole, emitter stage meets power supply VCC, and colelctor electrode meets bus S1；The point melts C20 mono- terminated bus S1, another termination power VCC；
The optocoupler N5 pins 2 meet bus S1, and the triode V13 emitter stages connect Darlington triode V14 base stages.
2. according to claim 1 with the drive circuit for strengthening bus driver energy force-summing device short-circuit protection function, its
It is characterised by, resistance R32 is also associated between the optocoupler N5 pins 1,2.
3. according to claim 2 with the drive circuit for strengthening bus driver energy force-summing device short-circuit protection function, its
It is characterised by, the triode V15 base stages also meet power supply VCC by resistance R39.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710021440.9A CN106817120B (en) | 2017-01-12 | 2017-01-12 | Drive circuit with bus drive capability enhancement and short-circuit protection function of equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710021440.9A CN106817120B (en) | 2017-01-12 | 2017-01-12 | Drive circuit with bus drive capability enhancement and short-circuit protection function of equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106817120A true CN106817120A (en) | 2017-06-09 |
| CN106817120B CN106817120B (en) | 2020-06-16 |
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ID=59109653
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710021440.9A Active CN106817120B (en) | 2017-01-12 | 2017-01-12 | Drive circuit with bus drive capability enhancement and short-circuit protection function of equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106817120B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109167594A (en) * | 2017-10-30 | 2019-01-08 | 武汉奇致激光技术股份有限公司 | A kind of photoelectric coupling structures and methods of micro controller and one-wire bus device |
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| CN103023331A (en) * | 2011-09-28 | 2013-04-03 | 中国科学院微电子研究所 | Isolated voltage and current detection control circuit of high-voltage switch power supply |
| CN202957794U (en) * | 2012-11-14 | 2013-05-29 | 罗岚文 | Optical coupler drive circuit based on power supply of single power source |
| CN203851118U (en) * | 2014-05-05 | 2014-09-24 | 宁波伊士通技术股份有限公司 | Mosfet output short circuit protection circuit device |
| CN104410405A (en) * | 2014-09-29 | 2015-03-11 | 中国航天科技集团公司第九研究院第七七一研究所 | Implementation method of programmable general digital quantity I/O signal conditioning |
| CN204216868U (en) * | 2014-11-12 | 2015-03-18 | 天津电气科学研究院有限公司 | IGBT parallel drive in high-power frequency conversion speed regulating device and detection protective circuit |
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2017
- 2017-01-12 CN CN201710021440.9A patent/CN106817120B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103023331A (en) * | 2011-09-28 | 2013-04-03 | 中国科学院微电子研究所 | Isolated voltage and current detection control circuit of high-voltage switch power supply |
| CN202957794U (en) * | 2012-11-14 | 2013-05-29 | 罗岚文 | Optical coupler drive circuit based on power supply of single power source |
| CN203851118U (en) * | 2014-05-05 | 2014-09-24 | 宁波伊士通技术股份有限公司 | Mosfet output short circuit protection circuit device |
| CN104410405A (en) * | 2014-09-29 | 2015-03-11 | 中国航天科技集团公司第九研究院第七七一研究所 | Implementation method of programmable general digital quantity I/O signal conditioning |
| CN204216868U (en) * | 2014-11-12 | 2015-03-18 | 天津电气科学研究院有限公司 | IGBT parallel drive in high-power frequency conversion speed regulating device and detection protective circuit |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109167594A (en) * | 2017-10-30 | 2019-01-08 | 武汉奇致激光技术股份有限公司 | A kind of photoelectric coupling structures and methods of micro controller and one-wire bus device |
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| Publication number | Publication date |
|---|---|
| CN106817120B (en) | 2020-06-16 |
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