CN203934040U - A kind of communication interface arrangement for emergency lighting - Google Patents
A kind of communication interface arrangement for emergency lighting Download PDFInfo
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- CN203934040U CN203934040U CN201420217820.1U CN201420217820U CN203934040U CN 203934040 U CN203934040 U CN 203934040U CN 201420217820 U CN201420217820 U CN 201420217820U CN 203934040 U CN203934040 U CN 203934040U
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- optocoupler
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- 238000004891 communication Methods 0.000 title claims abstract description 19
- 238000001514 detection method Methods 0.000 claims description 4
- 238000002955 isolation Methods 0.000 description 5
- 239000003990 capacitor Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- FGRBYDKOBBBPOI-UHFFFAOYSA-N 10,10-dioxo-2-[4-(N-phenylanilino)phenyl]thioxanthen-9-one Chemical compound O=C1c2ccccc2S(=O)(=O)c2ccc(cc12)-c1ccc(cc1)N(c1ccccc1)c1ccccc1 FGRBYDKOBBBPOI-UHFFFAOYSA-N 0.000 description 1
- 101100489717 Saccharomyces cerevisiae (strain ATCC 204508 / S288c) GND2 gene Proteins 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
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Abstract
The utility model discloses a kind of communication interface arrangement for emergency lighting, comprise: a. pulse signal transtation mission circuit, described transtation mission circuit comprises the first optocoupler and the second optocoupler, the output of the first optocoupler connects by the first optocoupler and the second optocoupler and coordinates the transistor switching circuit of controlling break-make, transistor switching circuit output connects holding wire to fire emergency lamp, the break-make of the break-make control transistor switching circuit of the first optocoupler and the second optocoupler, make power supply be applied to transistor switching circuit output with impulse form, be passed to fire emergency lamp; B. pulse signal return circuit, described return circuit comprises the 3rd optocoupler and the 4th optocoupler, the break-make of the 3rd optocoupler can be controlled the break-make that is added to the 4th optocoupler input power supply, and the power supply that is applied to the 4th optocoupler input returns to emergency lighting controller able pulse signal according to the break-make of the 4th optocoupler; Utilize a holding wire to realize the send and receive of power supply and signal simultaneously.
Description
Technical field
The utility model relates to fire communication technical field, specifically a kind of communication interface arrangement for emergency lighting.
Background technology
Emergency lighting at present and evacuation indication system can be divided into by system form: self-powered centralized control type, self-powered decentralized control type, centrally connected power source centralized control type, centrally connected power source decentralized control type Four types, wherein centrally connected power source centralized control type and self-powered centralized control type all need to carry out between emergency lighting controller able and fire emergency lamps communication, and current most producer is used the mode of RS485 communication interface, but adopt RS485 communication efficiency low, bus cannot be for providing power supply from machine equipment, need to be self-powered from machine equipment.
Utility model content
The purpose of this utility model is to provide a kind of communication interface arrangement for emergency lighting, and this device can utilize a holding wire to realize the send and receive of power supply and signal simultaneously.
The utility model solves the technical scheme that its technical problem adopts:
For a communication interface arrangement for emergency lighting, comprising:
A. pulse signal transtation mission circuit, described transtation mission circuit comprises the first optocoupler (N1) and the second optocoupler (N2), the output of the first optocoupler (N1) connects by the first optocoupler (N1) and the second optocoupler (N2) and coordinates the transistor switching circuit of controlling break-make, transistor switching circuit output connects holding wire to fire emergency lamp (2), the break-make of the break-make control transistor switching circuit of the first optocoupler (N1) and the second optocoupler (N2), make power supply be applied to transistor switching circuit output with impulse form, be passed to fire emergency lamp (2),
B. pulse signal return circuit, described return circuit comprises the 3rd optocoupler (N3) and the 4th optocoupler (N4), the break-make of the 3rd optocoupler (N3) can be controlled the break-make that is added to the 4th optocoupler (N4) input power supply, and the power supply that is applied to the 4th optocoupler (N4) input returns to emergency lighting controller able (1) pulse signal according to the break-make of the 4th optocoupler (N4).
Further; described communication interface arrangement also comprises holding wire short-circuit detection protection circuit; on holding wire, be in series with fuse (F1), the short-circuit signal on holding wire sends to emergency lighting controller able (1) by the 5th optocoupler (N5) that is connected to emergency lighting controller able (1).
The beneficial effects of the utility model are, adopt light-coupled isolation, make between communication bus, emergency lighting controller able and fire emergency lamp electrical connection separate, and communication bus can provide power supply for fire emergency lamp, utilize a holding wire to realize the send and receive of power supply and signal simultaneously.
Brief description of the drawings
Below in conjunction with drawings and Examples, the utility model is further illustrated:
Fig. 1 is circuit diagram of the present utility model;
Fig. 2 is the waveform schematic diagram of pulse signal transtation mission circuit in the utility model;
Fig. 3 is the waveform schematic diagram that in the utility model, transtation mission circuit is returned in pulse.
Embodiment
As shown in Figure 1, a kind of communication interface arrangement for emergency lighting that the utility model provides, comprises pulse signal transtation mission circuit, pulse signal return circuit and holding wire short-circuit detection protection circuit.Pulse signal transtation mission circuit comprises optocoupler N1, N2, triode V1～V3, resistance R 1～R4, R7～R9, R11～R14 and R16, one end of resistance R 2 connects power supply VCC, one end of other end contact resistance R3, the other end of R3 connects 1 pin of optocoupler N1, and 2 pins of optocoupler N1 connect the output interface of emergency lighting controller able 1, the break-make of the height control optocoupler N1 of " OutEn " signal level; 4 pins of optocoupler N1 meet power supply VCC2,3 pins of optocoupler N1 are connected with the base stage of triode V2 by resistance R 13, the base stage of resistance R 8 one end access triode V2, the emitter earth GND of the other end and triode V2, the collector electrode of triode V2 is connected to the base stage of triode V3 by resistance R 14, resistance R 9 one end are connected to the base stage of triode V3, the one end of receiving resistance R 1 after the transmitting collection of the other end and triode V3 is in parallel, and the other end of resistance R 1 connects power supply VCC2.One end of resistance R 4 connects power supply VCC, the other end is connected with 1 pin of optocoupler N2,2 pins of optocoupler N2 are connected to the output interface of emergency lighting controller able 1, the break-make of the height control optocoupler N2 of " Out " signal level, 3 pins of optocoupler N2 are connected to the base stage of triode V1 by resistance R 11, one end of resistance R 12 is connected to triode V1 base stage, accesses ground GND after the emitter parallel connection of the other end and triode V1; The collector electrode of triode V1 is connected to the collector electrode of triode V3 by resistance R 16, the collector electrode outconnector of triode V3 is as the holding wire between emergency lighting controller able 1 and fire emergency lamp 2, and is connected with the input interface of fire emergency lamp 2 by fuse F1.
Pulsed signal circuit comprises optocoupler N3, N4, resistance R 6, R10, R17 and capacitor C 2, one end of resistance R 17 connects power supply VCC, 1 pin of another termination optocoupler N3, 2 pins of optocoupler N3 are connected to the output interface of emergency lighting controller able 1, the break-make of the height control optocoupler N3 of " InEn " signal level, 3 pins of optocoupler N3 are received 1 pin of optocoupler N4, 4 pins of optocoupler N3 are connected to power supply VCC3, after resistance R 10 is in parallel with capacitor C 2, one end is connected 1 pin of optocoupler N4, the other end connects 2 pins of optocoupler N4 and is connected to holding wire by fuse F1, the 3 pin ground connection GND2 of optocoupler N4, 4 pins of optocoupler N4 are received power supply VCC through resistance R 6, and access the input interface of emergency lighting controller able 1, the height state of " In " signal level sending by reading optocoupler N4, receive the signal that fire emergency lamp 2 sends.
Holding wire short-circuit detection protection circuit comprises optocoupler N5, resistance R 5, R15 and fuse F1; 1 pin of optocoupler N5 is connected to the collector electrode of triode V3 through resistance R 15; 2 pins of optocoupler N5 are connected on holding wire; the 3 pin ground connection of optocoupler N5; 4 pins of optocoupler N5 connect the input interface of emergency lighting controller able 1 and are connected to power supply VCC by resistance R 5; emergency lighting controller able 1 receives " Short " signal that optocoupler N5 sends, by judging the height state of " Short " signal level and then judging that whether circuit is in short-circuit condition.
The power supply of this communication interface arrangement has 3 grades, be VCC, VCC2, VCC3, wherein VCC provides working power for communication interface arrangement, VCC2 provides power supply for the bus of transmitted signal, the bus of VCC3 when returning to pulse signal provides power supply, and VCC2 is greater than VCC3, for distinguishing the signal of transmission and the signal returning; Altogether, VCC and VCC2, VCC3 are not altogether for VCC2 and VCC3.
When use, under normal condition, emergency lighting controller able 1 is not to fire emergency lamp 2 transmitted signals, fire emergency lamp 2 is not also to emergency lighting controller able 1 inverse signal, now " OutEn " is low level, optocoupler N1 work, " InEn " is high level simultaneously, optocoupler N3 does not work, make VCC3 and holding wire isolation, VCC2 is through resistance R 13, R8 ground connection, after resistance R 8 dividing potential drops, be added to the base stage of triode V2, make V2 saturation conduction, power supply VCC2 is added to the base stage of triode V3 after resistance R 14 dividing potential drops, make triode V3 saturation conduction, power supply VCC2 is added on holding wire, now the level in bus is VCC2, fire emergency lamp 2 draws electric energy from holding wire.
When emergency lighting controller able 1 is during to fire emergency lamp 2 transmitted signal, " OutEn " is low level, optocoupler N1 work, now VCC2 is by resistance R 13 and R8 ground connection, after resistance R 8 dividing potential drops, be added to the base stage of triode V2, make V2 saturation conduction, power supply VCC2 is added to the base stage of triode V3 after resistance R 14 dividing potential drops, make triode V3 saturation conduction, power supply VCC2 is added on holding wire, " InEn " is high level simultaneously, optocoupler N3 does not work, make power supply VCC3 and holding wire isolation, make optocoupler N4 to work simultaneously, therefore pulse signal return circuit and holding wire isolation, transmitted signal is not exerted an influence.In the time that " Out " is low level, optocoupler N2 work, optocoupler N1 does not work, make triode V3 in high-impedance state, power supply VCC2 is added to the base stage of triode V1, V1 saturation conduction after the dividing potential drop of resistance R 12, holding wire, through resistance R 16 ground connection, drags down the voltage on holding wire; In the time that " Out " is high level, optocoupler N2 does not work, triode V1 can not saturation conduction, Level hold VCC2 on signal is constant, so the level of " Out " signal changes between height, make the pulse signal that on holding wire, generation amplitude is VCC2, as shown in Figure 2, realize emergency lighting controller able 1 to fire emergency lamp 2 transmitted signals.
In the time that emergency lighting controller able 1 receives the signal that fire emergency lamp 2 returns, " InEn " is low level, and optocoupler N3 work is added to power supply VCC3 1 pin of optocoupler N4." OutEn " and " Out " be high level simultaneously, optocoupler N1, and N2 does not work, and triode V2 can not conducting, and the collector electrode of V2 is in high-impedance state, and therefore triode V3 can not saturation conduction, and power supply VCC2 and holding wire are isolated; Optocoupler N2 does not work, and not conducting of triode V1, can not drag down holding wire, and therefore pulse signal transtation mission circuit and holding wire isolation, do not exert an influence to received signal.When fire emergency lamp 2 returns to low level, optocoupler N4 work, now to receive " In " signal be low level to emergency lighting controller able 1, in the time that fire emergency lamp 2 returns to high level, optocoupler N4 does not work, and now emergency lighting controller able 1 receives " In " for high level; As shown in Figure 3, the pulse signal that emergency lighting controller able 1 reception amplitude is VCC3, the pulse signal returning by the definite fire emergency lamp 2 of height variation of judgement " In " signal level is realized the reception of signal.
Due to the energy storage effect of the interior capacitor C 1 of fire emergency lamp 2, can ensure between holding wire low period, as low level part in Fig. 2 and Fig. 3, by DC/DC power supply changeover device N5, can ensure the power supply to fire emergency lamp 2 between low period, can normally work.
In the time of holding wire short circuit, be the 3 pin ground connection of optocoupler N5, optocoupler N5 work, " Short " signal that emergency lighting controller able 1 receives is low level, if not short circuit, " Short " signal is high level, and emergency lighting controller able 1 is determined whether short circuit of holding wire according to the height of " Short " signal level; While being short-circuited, holding wire electric current increases, fuse F1 fusing, and other parts of protective device can not be damaged.This device is realized emergency lighting controller able 1 to fire emergency lamp 2 transmitted signals by pulse signal transtation mission circuit, realize fire emergency lamp 2 by pulse signal return circuit and return to wire size to emergency lighting controller able 1, utilize a holding wire to realize the send and receive of power supply and signal simultaneously, improved efficiency.
The above, be only preferred embodiment of the present utility model, not the utility model done to any pro forma restriction; Any those of ordinary skill in the art, do not departing from technical solutions of the utility model scope situation, all can utilize method and the technology contents of above-mentioned announcement to make many possible variations and modification to technical solutions of the utility model, or be revised as the equivalent embodiment of equivalent variations.Therefore; every content that does not depart from technical solutions of the utility model; according to technical spirit of the present utility model to any simple modification made for any of the above embodiments, be equal to replacements, equivalence change and modify, all still belong to technical solutions of the utility model protect scope in.
Claims (2)
1. for a communication interface arrangement for emergency lighting, it is characterized in that, described device comprises:
A. pulse signal transtation mission circuit, described transtation mission circuit comprises the first optocoupler (N1) and the second optocoupler (N2), the output of the first optocoupler (N1) connects by the first optocoupler (N1) and the second optocoupler (N2) and coordinates the transistor switching circuit of controlling break-make, transistor switching circuit output connects holding wire to fire emergency lamp (2), the break-make of the break-make control transistor switching circuit of the first optocoupler (N1) and the second optocoupler (N2), make power supply be applied to transistor switching circuit output with impulse form, be passed to fire emergency lamp (2),
B. pulse signal return circuit, described return circuit comprises the 3rd optocoupler (N3) and the 4th optocoupler (N4), the break-make of the 3rd optocoupler (N3) can be controlled the break-make that is added to the 4th optocoupler (N4) input power supply, and the power supply that is applied to the 4th optocoupler (N4) input returns to emergency lighting controller able (1) pulse signal according to the break-make of the 4th optocoupler (N4).
2. a kind of communication interface arrangement for emergency lighting according to claim 1; it is characterized in that; described communication interface arrangement also comprises holding wire short-circuit detection protection circuit; on holding wire, be in series with fuse (F1), the short-circuit signal on holding wire sends to emergency lighting controller able (1) by the 5th optocoupler (N5) that is connected to emergency lighting controller able (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420217820.1U CN203934040U (en) | 2014-04-30 | 2014-04-30 | A kind of communication interface arrangement for emergency lighting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420217820.1U CN203934040U (en) | 2014-04-30 | 2014-04-30 | A kind of communication interface arrangement for emergency lighting |
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| Publication Number | Publication Date |
|---|---|
| CN203934040U true CN203934040U (en) | 2014-11-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420217820.1U Expired - Lifetime CN203934040U (en) | 2014-04-30 | 2014-04-30 | A kind of communication interface arrangement for emergency lighting |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110609509A (en) * | 2019-10-18 | 2019-12-24 | 九江中船消防设备有限公司 | Modulation circuit of fire-fighting field bus |
| CN110830026A (en) * | 2019-11-28 | 2020-02-21 | 广东美的暖通设备有限公司 | Optical coupling isolation communication circuit, circuit board and air conditioner |
-
2014
- 2014-04-30 CN CN201420217820.1U patent/CN203934040U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110609509A (en) * | 2019-10-18 | 2019-12-24 | 九江中船消防设备有限公司 | Modulation circuit of fire-fighting field bus |
| CN110830026A (en) * | 2019-11-28 | 2020-02-21 | 广东美的暖通设备有限公司 | Optical coupling isolation communication circuit, circuit board and air conditioner |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
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Granted publication date: 20141105 |
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| CX01 | Expiry of patent term |