CN106924925B - A kind of active output driving circuit and its implementation of input/output module - Google Patents
A kind of active output driving circuit and its implementation of input/output module Download PDFInfo
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- CN106924925B CN106924925B CN201710176852.XA CN201710176852A CN106924925B CN 106924925 B CN106924925 B CN 106924925B CN 201710176852 A CN201710176852 A CN 201710176852A CN 106924925 B CN106924925 B CN 106924925B
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/20—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for electronic equipment
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C37/00—Control of fire-fighting equipment
- A62C37/50—Testing or indicating devices for determining the state of readiness of the equipment
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Public Health (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Fire Alarms (AREA)
- Emergency Protection Circuit Devices (AREA)
Abstract
The invention discloses a kind of active output driving circuits of input/output module, including power supply circuit, output starting protection circuit and wireline inspection circuit, the power supply circuit include diode V3, triode V21 and capacitor C8；The output starting protection circuit includes triode V16, zener diode D4 and triode V18；The wireline inspection circuit includes resistance R16, resistance R20, capacitor C9 and diode V19.The present invention utilizes the direct powered operation of bus, without relay, and when peripheral equipment breaks down, can carry out effectively being depressured protection to it, and ensure the normal communication of bus simultaneously.Therefore, the present invention is suitable for popularization and application.
Description
Technical field
The present invention relates to technical field of fire control, and in particular to a kind of active output driving circuit of input/output module and its
Implementation method.
Background technique
Input/output module is also referred to as control module, is component part important in fire alarm linked system, is having
Control can be with output signal when requiring, or provides an on-off model, acts controlled device, while can receive equipment
Feedback signal, with to host report.
The active output driving mode of existing input/output module, circuit part usually require design 24V power supply electricity
Road is powered, while also needing to connect by relay with peripheral equipment, and forms route using other components such as optocouplers
Detection circuit detects peripheral equipment.Although the active output driving circuit that existing design method is realized is able to satisfy state
Family's standard, but the component in its circuit is more, when carrying out circuit board drafting, not only wiring is more, wire laying mode is more multiple
It is miscellaneous, and the price of Partial key component, thus not only take time and effort, design cost is also relatively high.
Based on this, supplied although the document that number of patent application is 201510247152.6 is disclosed using two-wire system communication bus
The mode of electricity solves the problems, such as that input/output module needs external offer power supply, reduces the cost in application process, still
It still needs to realize the conducting and shutdown of peripheral equipment by relay.Also, when that peripheral equipment breaks down is (such as short
Road) when, it can not be effectively protected in existing technology, and circuit components and peripheral equipment is caused to be easy to be damaged
It is bad, it is also possible to cause safety accident when serious.
Summary of the invention
Deficiency in view of the above technology, the present invention provides a kind of active output driving circuit of input/output module and its
Implementation method utilizes the direct powered operation of bus, can be with without relay, and when peripheral equipment breaks down
Effective decompression protection is carried out to it.
To achieve the above object, The technical solution adopted by the invention is as follows:
A kind of active output driving circuit of input/output module, including power supply circuit, output starting protection circuit and line
Alignment detection circuit, in which:
The power supply circuit includes that diode V3, triode V21 and the positive of capacitor C8, the diode V3 are accessed always
Line, the cathode of diode V3 and the collector of triode V21 connect the one end capacitor C8, the capacitor C8 other end ground connection；It is described
The emitter of triode V21 accesses bus；
The output starting protection circuit includes triode V16, zener diode D4 and triode V18；The triode
The emitter of V16 connects one end of capacitor C8 by fuse F1；The base stage of the triode V16 connects zener diode D4 cathode；
The anode of the zener diode D4 connects triode V18 collector and triode V21 base stage simultaneously, and the triode V18
Emitter ground connection, base stage then access the single-chip microcontroller in input/output module；
The wireline inspection circuit includes resistance R16, resistance R20, capacitor C9 and diode V19, the diode V19
Anode be separately connected resistance R16, resistance R20 and the respective one end capacitor C9, the cathode of diode V19 connects triode V16 collection
Electrode simultaneously draws port for accessing peripheral equipment；The capacitor C9 other end ground connection, the resistance R16 and resistance R20 are each
From the other end access the single-chip microcontroller in input/output module.
Further, the power supply circuit further includes resistance R22, resistance R23 and resistance R24 in parallel, the resistance
R22, resistance R23 and the respective one end resistance R24 connect the cathode of diode V3, and the other end meets capacitor C8.
Still further, the zener diode D4 connects triode V18 collector and triode by resistance R19 simultaneously
V21 base stage, and resistance R21 is also in series between triode V18 collector and triode V21 base stage.
Preferably, the triode V16 and triode V21 are PNP type triode.
According to foregoing circuit structure, the present invention also provides the realizations of the active output driving circuit of the input/output module
Method, comprising the following steps:
(1) bus is accessed into power supply circuit, provides working power by bus, and respectively open wireline inspection circuit and output
Single-chip microcontroller in dynamic protection circuit access input/output module, while wireline inspection circuit is accessed into peripheral equipment；
(2) it before starting peripheral equipment, is not turned between the collector and emitter of triode V16, i.e. output starting protection
Circuit does not work；Single-chip microcontroller provides 3V voltage to wireline inspection circuit by resistance R16 at this time, while single-chip microcontroller passes through detection electricity
Voltage value at resistance R20 judges whether there is failure；
(3) start peripheral equipment, triode V18 is first connected, and drives triode V21 and triode V16 conducting respectively, real
Now the active output of peripheral equipment is controlled；
(4) it when peripheral equipment starts, breaks down if encountering peripheral equipment, fuse F1 fever leads to triode
The voltage of V16 collector and emitter is pulled low, and the voltage of the triode V16 emitter flowed through and base stage is made to be unable to reach pressure stabilizing
The conducting voltage of diode D4 cannot drive zener diode D4 to be connected, so that the decompression formed to peripheral equipment is protected, be formed
While decompression protection, the voltage between fuse F1 and triode V16 emitter can guarantee the normal communication of bus.
Further, in the step (2), judge breaking or short circuit method particularly includes: if collected at resistance R20
Voltage value is 3V, then open circuit occurs for peripheral equipment；If collected voltage value is 0.7V at resistance R20, for peripheral equipment
Short circuit occurs, at this time entire wireline inspection circuit forming circuit.
Still further, after bus is accessed power supply circuit, also slowly being charged to capacitor C8 in the step (1).
Compared with prior art, the invention has the following advantages:
(1) circuit design advantages of simple of the present invention, operation are convenient, and the component being related to is common component and price
It is cheap.
(2) present invention utilizes the spy of resistance and diode by designed lines detection circuit and output starting protection circuit
Property, the fault detection before peripheral equipment starting not only may be implemented, but also after cooperating fuse F1, peripheral equipment may be implemented
Fault detection when starting simultaneously carries out decompression protection, this is because when peripheral equipment breaks down, due to being sent out at fuse F1
Heat, the voltage that will lead to triode V16 collector and emitter are pulled low, and zener diode D4 cannot be made to be connected, thus can be with
Peripheral equipment is protected, and while being protected to peripheral equipment, between fuse F1 and triode V16 emitter
Voltage (be not less than 10V) can ensure the normal work of bus.Therefore, the present invention was both avoided that circuit devcie when breaking down
And peripheral equipment is damaged, and is eliminated safe hidden trouble, while not influencing the normal communication between bus and other component also.
(3) present invention realizes active output driving circuit, entire driving circuit is equal by effective overall circuit design
By bus-powered, directly realize that peripheral equipment works normally using the voltage of bus, do not need 24V power circuit as it and electricity is provided
Can, the expenditure of electric energy and extra cost is saved, while also not needing to connect using relay with peripheral equipment, not only operation letter
Just, and the cost for needing outsourcing relay has been saved.
(4) it is equipped with the capacitor C8 with charging/discharging function in power supply circuit of the invention, and after accessing bus, utilizes two
Pole pipe and the resistance of parallel connection are that it slowly charges, to can not only export high current when peripheral equipment starts suddenly, are met
The requirement of equipment work, and high frequency and impulse disturbances can be filtered out, keep output driving circuit power supply more stable.
(5) prior art can not identify the working condition of resistance value lower equipment and circuit devcie mostly, when equipment and electricity
When road device resistance value is lower, usually it is defaulted as equipment or failure has occurred in device；And the present invention passes through effective integrated circuit
Design can identify that resistance value, and can be at this in 1K equipment below, the working condition of circuit devcie (such as normal or failure)
When a little equipment and device failure in time, decompression protection is effectively performed.Therefore, for compared with prior art, the present invention is big
Identification equipment, the detection accuracy of circuit devcie working condition under low resistance is improved to width, avoids unnecessary set well
Standby and circuit devcie checks work, has saved human and material resources.
(6) cost performance of the present invention is high, practical, is with a wide range of applications, and is highly suitable in fire-fighting domain big
Scale promotes and applies.
Detailed description of the invention
Fig. 1 is block diagram of the present invention.
Fig. 2 is circuit diagram of the invention.
Specific embodiment
The invention will be further described with embodiment for explanation with reference to the accompanying drawing, and mode of the invention includes but not only limits
In following embodiment.
As depicted in figs. 1 and 2, the present invention provides a kind of novel output driving circuits, mainly by power supply circuit, output
Starting protection circuit and wireline inspection circuit three parts are constituted, and the present invention can be used in the input and output of fire alarm control system
In module, realize that the active output to peripheral equipment controls.Lower mask body introduces power supply circuit, output starting protection circuit and line
Alignment detection circuit.
The power supply circuit is made of diode V3, triode V21, capacitor C8 and three resistance (R22, R23, R24),
The anode access bus of the diode V3, three resistance R22, R23, R24 are in parallel, and the respective one end of three connects two poles
The cathode of pipe V3, three respective other ends of resistance R22, R23, R24 then connect one end of capacitor C8, and the capacitor C8's is another
End ground connection.The emitter of the triode V21 connects bus, and the collector of triode V21 is also connected with one end of capacitor C8.
Power supply circuit in the present embodiment can realize High-current output, and filter out high frequency and impulse disturbances, and diode V3 is arranged can
It prevents electric current reversed, further ensures the stability that power supply circuit is subsequent conditioning circuit output services voltage.
The output starting protection circuit includes triode V16, zener diode D4, resistance R19, triode V18, resistance
R21 and resistance R15, wherein the emitter of the triode V16 connects one end of capacitor C8 by fuse F1；The triode
The base stage of V16 connects zener diode D4 cathode；The zener diode D4 connects triode V18 collector by resistance R19 simultaneously
With triode V21 base stage, and resistance R21 is also in series between triode V18 collector and triode V21 base stage, and institute
The emitter of the triode V18 stated is grounded, and base stage then accesses the single-chip microcontroller in input/output module.
The wireline inspection circuit includes resistance R16, resistance R20, capacitor C9 and diode V19, the diode V19
Anode be separately connected one end of resistance R16, resistance R20 and capacitor C9, the cathode of diode V19 connects peripheral equipment；It is described
Single-chip microcontroller in the other end access input/output module of capacitor C9 other end ground connection, the resistance R16 and resistance R20.
Wherein, the triode V16 and triode V21 is PNP type triode, and when work, emitter connects high voltage, collection
Electrode connects low-voltage.
According to foregoing circuit structure, realization process of the invention is described below.
According to peripheral equipment loading condition, power supply circuit is accessed into bus, provides working power by bus, and to capacitor C8
Slowly charged.Then, wireline inspection circuit and output starting protection circuit are accessed into single-chip microcontroller respectively, while route is examined
Slowdown monitoring circuit accesses peripheral equipment.The present invention (can not be led before starting peripheral equipment between the collector and emitter of triode V16
Logical, i.e. output starting protection circuit does not work) it is detected, (open circuit is short with the presence or absence of failure for confirmation peripheral equipment
Road), detection mode are as follows: single-chip microcontroller provides 3V voltage to wireline inspection circuit by R16, then the electricity at detection resistance R20
Pressure value judges the peripheral equipment with the presence or absence of failure.If peripheral equipment is breaking, collection voltages are 3V at resistance R20；If periphery is set
Standby short circuit, entire detection circuit forming circuit, collects the nearly 0.7V of voltage value at this time.
Meanwhile in peripheral equipment starting, triode V18 is first connected, and drives triode V21 and triode V16 respectively
Conducting realizes that the active output to peripheral equipment controls.In the above process, wireline inspection circuit in real time examines peripheral equipment
It surveys, when encountering peripheral equipment and breaking down, since fuse F1 generates heat, leads to the electricity of triode V16 collector and emitter
Pressure is pulled low, and so that the triode V16 emitter flowed through and the voltage of base stage is unable to reach the conducting voltage of zener diode D4, no
Zener diode D4 can be driven to be connected, thus form the decompression protection to peripheral equipment, it can when peripheral equipment being enabled to break down
To disconnect in time, to be overhauled to peripheral equipment.Also, while forming decompression protection, fuse F1 and triode
Voltage between V16 emitter can also guarantee the normal communication of bus, not because peripheral equipment breaks down influence bus with
Normal communication between other component.
Although structure of the invention is simple, does not allow to be readily conceivable that, only further investigate, and will integrate theory with practice,
It can be with most conventional component, by cleverly circuit structure design, to realize peripheral equipment power supply, detection and decompression protection
Function, to realize the active output control to peripheral equipment while avoiding that complicated 24V power circuit and relay is added
System.Therefore, not only circuit structure is simple, using effect and security performance are all good by the present invention, but also cost is very cheap, completely will
The active output driving circuit design of input/output module is promoted to a new height, so for compared with prior art,
The present invention has substantive distinguishing features outstanding 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
It encloses, as long as that in body design thought of the invention and mentally makes has no the change of essential meaning or polishing, is solved
The technical issues of it is still consistent with the present invention, should all be included within protection scope of the present invention.
Claims (7)
1. a kind of active output driving circuit of input/output module, which is characterized in that including power supply circuit, output starting protection
Circuit and wireline inspection circuit, in which:
The power supply circuit includes the anode access bus of diode V3, triode V21 and capacitor C8, the diode V3, and two
The cathode of pole pipe V3 and the collector of triode V21 connect the one end capacitor C8, the capacitor C8 other end ground connection；The triode
The emitter of V21 accesses bus；
The output starting protection circuit includes triode V16, zener diode D4 and triode V18；The triode V16's
Emitter connects one end of capacitor C8 by fuse F1；The base stage of the triode V16 connects zener diode D4 cathode；It is described steady
It presses the anode of diode D4 while connecing triode V18 collector and triode V21 base stage, and the emitter of the triode V18
Ground connection, base stage then access the single-chip microcontroller in input/output module；
The wireline inspection circuit includes resistance R16, resistance R20, capacitor C9 and diode V19, and the diode V19 is just
Pole is separately connected resistance R16, resistance R20 and the respective one end capacitor C9, and the cathode of diode V19 connects triode V16 collector
And draw port for accessing peripheral equipment；The capacitor C9 other end ground connection, the resistance R16 and resistance R20 are respective
The other end accesses the single-chip microcontroller in input/output module.
2. a kind of active output driving circuit of input/output module according to claim 1, which is characterized in that the confession
Circuit further includes resistance R22, resistance R23 and resistance R24, the resistance R22, resistance R23 and resistance R24 in parallel respective
One end connects the cathode of diode V3, and the other end meets capacitor C8.
3. a kind of active output driving circuit of input/output module according to claim 2, which is characterized in that described steady
Pressure diode D4 connects triode V18 collector and triode V21 base stage simultaneously by resistance R19, and in triode V18 current collection
Resistance R21 is also in series between pole and triode V21 base stage.
4. a kind of active output driving circuit of input/output module according to claim 3, which is characterized in that described three
Pole pipe V16 and triode V21 is PNP type triode.
5. the implementation method of the described in any item output driving circuits of Claims 1 to 4, which comprises the following steps:
(1) bus is accessed into power supply circuit, provides working power by bus, and respectively protect wireline inspection circuit and output starting
Protection circuit accesses the single-chip microcontroller in input/output module, while wireline inspection circuit is accessed peripheral equipment；
(2) it before starting peripheral equipment, is not turned between the collector and emitter of triode V16, i.e. output starting protection circuit
It does not work；Single-chip microcontroller provides 3V voltage to wireline inspection circuit by resistance R16 at this time, while single-chip microcontroller passes through detection resistance
Voltage value at R20 judges whether there is failure；
(3) start peripheral equipment, triode V18 is first connected, and drives triode V21 and triode V16 conducting, realization pair respectively
The active output of peripheral equipment controls；
(4) it when peripheral equipment starts, breaks down if encountering peripheral equipment, fuse F1 fever leads to triode V16 collection
The voltage of electrode and emitter is pulled low, and the triode V16 emitter flowed through and the voltage of base stage is made to be unable to reach two pole of pressure stabilizing
The conducting voltage of pipe D4 cannot drive zener diode D4 to be connected, so that the decompression formed to peripheral equipment is protected, form decompression
While protection, the voltage between fuse F1 and triode V16 emitter can guarantee the normal communication of bus.
6. implementation method according to claim 5, which is characterized in that in the step (2), judge the specific method of failure
Are as follows: if collected voltage value is 3V at resistance R20, is judged as that open circuit occurs for peripheral equipment；If collected at resistance R20
Voltage value is 0.7V, then is judged as that short circuit occurs for peripheral equipment, at this time entire wireline inspection circuit forming circuit.
7. implementation method according to claim 5 or 6, which is characterized in that in the step (1), bus is accessed and is powered
After circuit, also slowly charged to capacitor C8.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710176852.XA CN106924925B (en) | 2017-03-23 | 2017-03-23 | A kind of active output driving circuit and its implementation of input/output module |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710176852.XA CN106924925B (en) | 2017-03-23 | 2017-03-23 | A kind of active output driving circuit and its implementation of input/output module |
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| CN106924925A CN106924925A (en) | 2017-07-07 |
| CN106924925B true CN106924925B (en) | 2019-02-15 |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107230993A (en) * | 2017-08-02 | 2017-10-03 | 四川赛科安全技术有限公司 | The remote constant pressure method of supplying power to of fire-fighting bus based on input/output module |
| CN108110831A (en) * | 2017-12-25 | 2018-06-01 | 深圳市易路网科技有限公司 | A kind of charging wire fault detection method for being used to share charger baby |
| CN109581112B (en) * | 2018-12-10 | 2024-05-31 | 中国南方电网有限责任公司超高压输电公司柳州局 | Converter valve TCU unit test platform and TCU energy supply loop fault measurement method |
| CN112515587B (en) * | 2020-10-23 | 2023-09-26 | 深圳银星智能集团股份有限公司 | Liquid level state detection method, water tank assembly and robot |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2002233142A (en) * | 2001-01-30 | 2002-08-16 | Hitachi Computer Peripherals Co Ltd | Switching regulator |
| CN203911895U (en) * | 2014-05-30 | 2014-10-29 | 天津市北海通信技术有限公司 | Input output circuit for interface of public address (PA) system and fire alarm system (FAS) |
| CN105186587A (en) * | 2015-05-12 | 2015-12-23 | 青岛鼎信通讯股份有限公司 | Active output control method of two-wire system |
| CN205405841U (en) * | 2016-01-05 | 2016-07-27 | 上海金盾消防智能科技有限公司 | A inputoutput unit for fire alarm system |
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