CN105306039A - Input/output circuit for interface of public address system and fire-fighting automation system - Google Patents
Input/output circuit for interface of public address system and fire-fighting automation system Download PDFInfo
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- CN105306039A CN105306039A CN201410242867.8A CN201410242867A CN105306039A CN 105306039 A CN105306039 A CN 105306039A CN 201410242867 A CN201410242867 A CN 201410242867A CN 105306039 A CN105306039 A CN 105306039A
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Abstract
The invention creatively provides an input/output circuit for an interface of a public address system and a fire-fighting automation system (FAS). The input/output circuit comprises a rectifier bridge, an optical coupler and jumper wires; the input end of the rectifier bridge is connected with the third base pin of the jumper wire J3 and the third base pin of the jumper wire J4, respectively; the second base pin of the jumper wire J3 is connected with the third base pin of the jumper wire J1; the second base pin of the jumper wire J1 is connected with an IO+ input contact of the FAS system; the second base pin of the jumper wire J4 is connected with the third base pin of the jumper wire J2; the second base pin of the jumper wire J2 is connected with an IO- output contact of the FAS system; and one output end of the rectifier bridge is connected with an input negative terminal of the optical coupler, and the other output end of the rectifier bridge is connected with an input positive terminal of the optical coupler U1 through a resistor R1. The circuit meets requirements on the FAS system in different modes, and moreover, when the FAS system is in a wet node mode, the circuit is subjected to bridge processing, so that the active input which is strict in polarity requirement is simplified, and a construction unit can perform wiring at random regardless of positive and negative electrodes.
Description
Technical field
The invention belongs to circuit design field, especially relates to a kind of imput output circuit for Public Address system and fire-fighting system interface.
Background technology
The form that FAS (fire-fighting system) inputs to PA (Public Address system) has two kinds: dry contact (passive) and wet node (active), but if when adopting wet node after reverse polarity connection, can burn out equipment.In addition, consider the large site environment of interference, and along with the growth of engineering experience, some FAS systems be not only input dry contact or wet node to PA system, also require that PA system feedback is to FAS system dry contact.Based on requirements different above, PA system can by different modules, and such as, FAS system is dry contact pattern, and PA system selects dry contact module; FAS system is wet contact pattern, and PA system selects wet contact module etc., which adds the quantity of unit in PA system, exists and is difficult to accomplish standardized problem.
Summary of the invention
The problem that the invention will solve is to provide a kind of imput output circuit being used for Public Address system and fire-fighting system interface different mode in above FAS system and requirement all contained.
For solving the problems of the technologies described above, the technical scheme that the invention adopts is: a kind of imput output circuit for Public Address system and fire-fighting system interface, comprise rectifier bridge, optocoupler U1 and wire jumper, the input of described rectifier bridge is connected with the three-prong of wire jumper J4 with the three-prong of wire jumper J3 respectively, second pin of described wire jumper J3 is connected with the three-prong of wire jumper J1, second pin of described wire jumper J1 connects the IO+ input contact of FAS system, second pin of described wire jumper J4 is connected with the three-prong of wire jumper J2, second pin of described wire jumper J2 connects the IO-input contact of FAS system, an output of described rectifier bridge is connected with the input negative terminal of optocoupler U1, another output of described rectifier bridge is connected with the input anode of optocoupler U1 by resistance R1, the input anode of described optocoupler U1 is also connected with resistance R2 by wire jumper J5, described resistance R2 is connected with 24V power supply, the output access CPU of described optocoupler U1.
Further, first pin of described wire jumper J1 with J2 is connected by the collector electrode of relay with triode Q2, the grounded emitter of described triode Q2, the base stage of described triode Q2 divides two-way, lead up to resistance R6 ground connection, another road is connected with the base stage of triode Q1 with resistance R4 by resistance R5 successively, the collector electrode of described triode Q1 is connected with the negative electrode of light-emitting diode D1, the anode of described light-emitting diode D1 is connected with 3.3V power supply by resistance R3, access IO2OUT signal between described resistance R4 and resistance R5, meet the demand of FAS system output mode.
The advantage that the invention has and good effect are: this circuit is circuit different mode in FAS system and requirement all contained, and when FAS is for wet node mode, circuit has done bridge-type process, make the simplification that the active input of strict polar requirement becomes, unit in charge of construction can regardless of positive and negative careless wiring, by IO2OUT control relay, according to actual requirement, can adhesive or disconnect relay, meet the demand of FAS system output mode; Have cost of manufacture, energy loss reduces, stability strengthens, advantages such as operating, control, be easy to use.
Accompanying drawing explanation
Fig. 1 is the circuit diagram of the invention.
Embodiment
Elaborate below in conjunction with the specific embodiment of accompanying drawing to the invention.
As shown in Figure 1, a kind of imput output circuit for Public Address system and fire-fighting system interface, comprise rectifier bridge, optocoupler U1 and wire jumper, the input of described rectifier bridge is connected with the three-prong of wire jumper J4 with the three-prong of wire jumper J3 respectively, second pin of described wire jumper J3 is connected with the three-prong of wire jumper J1, second pin of described wire jumper J1 connects the IO+ input contact of FAS system, second pin of described wire jumper J4 is connected with the three-prong of wire jumper J2, second pin of described wire jumper J2 connects the IO-input contact of FAS system, an output of described rectifier bridge is connected with the input negative terminal of optocoupler U1, another output of described rectifier bridge is connected with the input anode of optocoupler U1 by resistance R1, the input anode of described optocoupler U1 is also connected with resistance R2 by wire jumper J5, described resistance R2 is connected with 24V power supply, the output access CPU of described optocoupler U1, first pin of described wire jumper J1 with J2 is connected by the collector electrode of relay with triode Q2, the grounded emitter of described triode Q2, the base stage of described triode Q2 divides two-way, lead up to resistance R6 ground connection, another road is connected with the base stage of triode Q1 with resistance R4 by resistance R5 successively, the collector electrode of described triode Q1 is connected with the negative electrode of light-emitting diode D1, the anode of described light-emitting diode D1 is connected with 3.3V power supply by resistance R3, IO2OUT signal is accessed between described resistance R4 and resistance R5, meet the demand of FAS system output mode.
The course of work of this example is as follows:
1) when FAS system is dry contact pattern, by 2 of J1, J2,3 pin short circuits, by 1 of J3, J4,2 pin short circuits, by J5 short circuit, the current circuit of formation is as follows:
1. the 2. pin (24V_GND) of the 1. 2. 2. 3. 2. 3. pin → J4 of pin → FAS system dry contact → J2 of pin → J1 of 24V → R2 → J5 (short circuit) → U1 → J3
Electric current finally by 24V through a series of element to 24V_GND, optocoupler U1 conducting, to CPU process after Phototube Coupling.
2) when FAS system is wet contact pattern, by 2 of J1, J2,3 pin short circuits, by 2 of J3, J4,3 pin short circuits, the current circuit of formation is as follows:
2. the 3. pin → IO1-of the 2. 3. 2. 3. 2. 3. pin → J2 of pin → rectifier bridge → R1 → U1 → rectifier bridge → J4 of pin → J3 of IO1+ → J1
Electric current finally by IO1+ through a series of element to IO1-, optocoupler U1 conducting, to CPU process after Phototube Coupling.
Wet node, namely have the active input of polarity, reverse polarity connection can cause seriously burning out of equipment, adopts rectifying bridge type process during this circuit design, like this can arbitrarily wiring during construction, brings convenience for constructing.
3) in order to meet the demand of FAS system, in this circuit, output mode is added.By 1 of J1, J2,2 pin short circuits, be implemented as follows: the main control part of this circuit, by IO2OUT control relay, according to actual requirement, can adhesive or disconnect relay, meet the demand of FAS system.
This circuit can realize, with all requirements of FAS system, comprising dry contact at present, and wet node, dry contact feeds back.For whole PA system, decrease the quantity of equipment, reduce cost, improve the standardization of product greatly.And during circuit design, take into account on-the-spot environment and wiring, also reduce the complexity of field connection.
Above an embodiment of the invention has been described in detail, but described content being only the preferred embodiment of the invention, the practical range for limiting the invention can not being considered to.All equalization changes done according to the invention application range with improve, within the patent covering scope that still all should belong to the invention.
Claims (2)
1. the imput output circuit for Public Address system and fire-fighting system interface, it is characterized in that: comprise rectifier bridge, optocoupler U1 and wire jumper, the input of described rectifier bridge is connected with the three-prong of wire jumper J4 with the three-prong of wire jumper J3 respectively, second pin of described wire jumper J3 is connected with the three-prong of wire jumper J1, second pin of described wire jumper J1 connects the IO+ input contact of FAS system, second pin of described wire jumper J4 is connected with the three-prong of wire jumper J2, second pin of described wire jumper J2 connects the IO-input contact of FAS system, an output of described rectifier bridge is connected with the input negative terminal of optocoupler U1, another output of described rectifier bridge is connected with the input anode of optocoupler U1 by resistance R1, the input anode of described optocoupler U1 is also connected with resistance R2 by wire jumper J5, described resistance R2 is connected with 24V power supply, the output access CPU of described optocoupler U1.
2. a kind of imput output circuit for Public Address system and fire-fighting system interface according to claim 1, it is characterized in that: first pin of described wire jumper J1 with J2 is connected by the collector electrode of relay with triode Q2, the grounded emitter of described triode Q2, the base stage of described triode Q2 divides two-way, lead up to resistance R6 ground connection, another road is connected with the base stage of triode Q1 with resistance R4 by resistance R5 successively, the collector electrode of described triode Q1 is connected with the negative electrode of light-emitting diode D1, the anode of described light-emitting diode D1 is connected with 3.3V power supply by resistance R3, IO2OUT signal is accessed between described resistance R4 and resistance R5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410242867.8A CN105306039A (en) | 2014-05-30 | 2014-05-30 | Input/output circuit for interface of public address system and fire-fighting automation system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410242867.8A CN105306039A (en) | 2014-05-30 | 2014-05-30 | Input/output circuit for interface of public address system and fire-fighting automation system |
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| Publication Number | Publication Date |
|---|---|
| CN105306039A true CN105306039A (en) | 2016-02-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410242867.8A Pending CN105306039A (en) | 2014-05-30 | 2014-05-30 | Input/output circuit for interface of public address system and fire-fighting automation system |
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| CN (1) | CN105306039A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110907735A (en) * | 2019-12-08 | 2020-03-24 | 国网河南省电力公司洛阳供电公司 | Modular primary equipment simulation system |
| CN114925007A (en) * | 2022-06-09 | 2022-08-19 | 盈帜科技（常州）有限公司 | Signal conversion circuit |
-
2014
- 2014-05-30 CN CN201410242867.8A patent/CN105306039A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110907735A (en) * | 2019-12-08 | 2020-03-24 | 国网河南省电力公司洛阳供电公司 | Modular primary equipment simulation system |
| CN114925007A (en) * | 2022-06-09 | 2022-08-19 | 盈帜科技（常州）有限公司 | Signal conversion circuit |
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| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160203 |
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| WD01 | Invention patent application deemed withdrawn after publication |