CN220383263U

CN220383263U - General fire emergency lamp circuit

Info

Publication number: CN220383263U
Application number: CN202321445673.9U
Authority: CN
Inventors: 牟翔宇; 牟宏伟
Original assignee: Individual
Current assignee: Individual
Priority date: 2023-06-08
Filing date: 2023-06-08
Publication date: 2024-01-23
Anticipated expiration: 2033-06-08

Abstract

A general fire emergency lamp circuit belongs to the technical field of fire emergency lighting and comprises a 2-wire system/4-wire system conversion unit, a state monitoring unit, an interlocking control unit and a light source unit which are electrically connected. The utility model realizes that the 2-wire fire emergency lamp circuit and the 4-wire fire emergency lamp circuit are universal through the 2-wire/4-wire conversion unit, and only the product types can be reduced by 50%; in addition, the system is matched with an emergency lighting centralized power supply to realize quick and reliable interlocking control by designing the interlocking control unit, the emergency switching time is shortened, and the emergency switching can be directly performed through the interlocking control when the computer, the sensor, the communication equipment and the like are in failure. The generalized design and the combined design can unify components, production process, debugging method and maintenance method, and reduce the comprehensive cost of design, production, debugging and maintenance; the emergency conversion is safe and effective, and has good practical value.

Description

General fire emergency lamp circuit

Technical Field

The utility model belongs to the technical field of fire emergency lighting, and particularly relates to a universal fire emergency lamp circuit.

Background

In modern society construction, all be provided with fire emergency lighting lamps and lanterns in the building region such as commercial building, school, mill, hotel and subway tunnel, include: the emergency lighting lamp and the evacuation sign lamp are characterized in that the circuit is divided into a 2-wire system and a 4-wire system according to a wiring mode; the functions are divided into an illumination function and a sign function, and the sign function is divided into dozens of kinds according to the indication type; the power is divided into low power and high power. The functional attributes are classified, and the types of lamps and circuits can be as many as tens of kinds. The lamps are used for illuminating evacuation channels and indicating evacuation directions, exit positions, floors and the like for evacuated persons, and the fire emergency lamps become necessary facilities in large-scale buildings.

At present, the prior fire emergency lamp circuit is generally a special circuit and has the following defects:

1. according to different modes of connection, illumination power, indication function and the like, as many as tens of evacuation marker lamps and emergency illumination lamps all need to be designed with respective special circuits, and can not be used interchangeably, so that the circuit universality is poor.

2. Because of the variety of evacuation marker lamps and emergency lighting lamps, tens of sets of different types of circuits need to be produced, the production departments need to be configured with various types of components and various production processes, and during debugging, maintenance and after-sales service, the circuits need to be subjected to targeted debugging and maintenance, so that the requirements on the knowledge and experience of personnel are relatively rich; the comprehensive cost of design, production, maintenance, etc. is high.

3. The existing fire emergency lamps in the market have only linkage control function and have no linkage control function, and can not meet the requirements of fire emergency lighting and evacuation indication System technical Standard BG 51309-2018. The emergency switching time of the lamp is long, and in an extreme case, if a computer, a sensor, communication equipment and the like are failed, the fire emergency lamp has the problem of emergency switching failure.

Disclosure of Invention

Aiming at the defects of the original fire-fighting emergency lamp circuit, the utility model provides the general fire-fighting emergency lamp circuit, and the 2-wire fire-fighting emergency lamp circuit and the 4-wire fire-fighting emergency lamp circuit are universal through the 2-wire system/4-wire system conversion unit, so that the types of products can be reduced by 50%; in addition, the system is matched with an emergency lighting centralized power supply to realize quick and reliable interlocking control by designing the interlocking control unit, the emergency switching time is shortened, and the emergency switching can be directly performed through the interlocking control when the computer, the sensor, the communication equipment and the like are in failure. The generalized design and the combined design can unify components, production process, debugging method and maintenance method, and reduce the comprehensive cost of design, production, debugging and maintenance; the specific technical scheme is as follows:

a universal fire emergency light circuit, the circuit comprising: a 2-wire system/4-wire system conversion unit 1, a state monitoring unit 2, a linkage control unit 3 and a light source unit 4;

the 2-wire/4-wire conversion unit 1 in the above technical solution functions: separating the direct-current voltage for supplying power to the state monitoring unit 2, the interlocking control unit 3 and the light source unit 4 from the 2-wire measurement and control signal; separating a communication signal from a 2-wire measurement and control signal to provide an instruction for the monitoring unit 2; while also providing a interlock control signal to the interlock control unit 3. The 2-wire system/4-wire system conversion unit 1 is designed with terminals of V11+, V11-, V12+, V12-, S11+ and L11, and the wiring mode is as follows: the v11+ terminal and the V11-terminal are input terminals common to the 2-wire system and the 4-wire system of the 2-wire system/4-wire system conversion unit 1, and when applied in the 4-wire system, the v11+ terminal and the V11-terminal serve as power line terminals, and when applied in the 2-wire system, the v11+ terminal and the V11-terminal serve as terminals of the measurement and control line. The V12+ end and the V12-end are the positive electrode and the negative electrode of the direct current power supply output end of the 2-wire system/4-wire system conversion unit 1, the V12+ end and the V12-end are connected with the V21+ end and the V21-end of the monitoring unit 2, the V12+ end and the V12-end are connected with the V31+ end and the V31-end of the interlocking control unit 3, and the V12-end is connected with the V41-end of the light source unit 4. The S11+ end is a communication output end of a 2-wire system, the S11+ end is connected with the S22+ end of the monitoring unit 2, the L11 end is a linkage signal output end of the 2-wire system/4-wire system conversion unit 1, and the L11 end is connected with the L31 end of the linkage control unit 3.

The state monitoring unit 2 in the above technical solution functions as: and receiving instructions of a 2-wire system and a 4-wire system, and realizing linkage control and linkage control of the lamp by utilizing a hardware interface circuit. The state monitoring unit 2 is designed with terminals V21+, V21-, S21+, S21-, S22+, P21, P22, P23 and P24 in the following wiring modes: the V21+ end and the V21-end are the positive electrode and the negative electrode of the direct current power supply input end of the state monitoring unit 2, the V21+ end and the V21-end are connected with the V12+ end and the V12-end of the 2-wire system/4-wire system conversion unit 1, the S22+ end is a communication input end of the 2-wire system, the S22+ end is connected with the S11+ end of the 2-wire system/4-wire system conversion unit 1, the S21+ end and the S21-end are the positive electrode and the negative electrode of the 4-wire system communication input end, the P21 end is a linkage control output end, the P21 end is connected with the P31 end, the P22 end, the P23 end and the P24 end of the linkage control unit 3 are output ends of light source control, and the P22 end, the P23 end and the P24 end are connected with the P41 end, the P42 end and the P43 end of the light source unit 4.

The interlocking control unit 3 in the above technical scheme has the functions that: receiving a linkage control signal from the 2-wire system/4-wire system conversion unit 1, and realizing quick and reliable linkage control on the light source unit 4 through an interface circuit; and the linkage control signal from the state monitoring unit 2 is received to realize linkage control on the light source unit 4. The interlocking control unit 3 is designed with V31+, V31-, P31, L31 and V32+ terminals, and the wiring mode is as follows: the P31 end is an input end of linkage control, the P31 end is connected with the P21 end of the state monitoring unit 2, the L31 end is an input end of linkage control, and the L31 end is connected with the L11 end of the 2-wire system/4-wire system conversion unit 1. The v32+ end is an output end of the light source control, and the v32+ end is connected with the v41+ end of the light source unit 4.

The function of the light source unit 4 in the above-described technical scheme is: the controllable power supply voltage is obtained from the interlock control unit 3, and the controllable illumination is realized by the internal self-contained driving circuit and the LEDs. The light source unit 4 is designed with terminals of V41+, V41-, P41, P42 and P43 in the following wiring modes: the end P41, the end P42 and the end P43 are input ends for controlling the light source, and the end P41, the end P42 and the end P43 are connected with the end P22, the end P23 and the end P24 of the state monitoring unit 2. The V41+ end is an input end of light source control, and the V41+ end is connected with the V32+ end of the interlocking control unit 3. The V41-end is the negative electrode of the direct current power supply input end, and the V41-end is connected with the V12-end of the 2-wire system/4-wire system conversion unit 1.

In the above technical solution, the circuit of the 2-wire/4-wire conversion unit 1 includes: transient diode D14, rectifier diode D11, rectifier diode D13, rectifier bridge M11, electrolytic capacitor C11 and ceramic capacitor C12. Two pins of the transient diode D14 are connected with a V11+ end and a V11-end, the positive electrode of the rectifier diode D11 is connected with the V11+ end, and the negative electrode of the rectifier diode D11 is connected with the S11+ end. One AC end of the rectifier bridge M11 is connected with a V11+ end, the other AC end of the rectifier bridge M11 is connected with a V11-end, the V+ end of the rectifier bridge M11 is connected with a V12+ end, the V-end of the rectifier bridge M11 is connected with a V12-end, the positive electrode of the rectifier diode D13 is connected with the V11-end, and the negative electrode of the rectifier diode D13 is connected with an L11 end. Two pins of the ceramic chip capacitor C11 are connected with a V12+ end and a V12-end, the positive electrode of the electrolytic capacitor C12 is connected with the V12+ end, and the negative electrode of the electrolytic capacitor C12 is connected with the V12-end. The rectifying diode D11 is used for extracting 2-wire system communication signals; the rectifier bridge M11, the capacitor C11 and the capacitor C12 act to extract direct-current voltage for power supply; the rectifying diode D13 is used for extracting linkage control signals; the transient diode D14 functions to suppress transient voltage disturbances.

In the above technical solution, the circuit of the state monitoring unit 2 is of the prior art, and includes: the single-chip MCU and the interface circuit are provided with 9 lead terminals, namely an S21 plus terminal, an S21-terminal, an S22 plus terminal, a V21-terminal, a P21 terminal, a P22 terminal, a P23 terminal and a P24 terminal. Through programming, the MCU can utilize the S21 plus end, the S21-end and the S22 plus end to carry out instruction receiving and transmitting, and execute measurement and control on the V21 end plus, the V21-end, the P21 end, the P22 end, the P23 end and the P24 end, thereby realizing fault detection and light source on-off of the lamp and sign symbol display.

In the above technical solution, the circuit of the interlock control unit 3 includes: resistor R31, resistor R32, resistor R33, transistor T31, transistor T32, transistor T33, capacitor C31, and capacitor C32. The base of triode T31 connects P31 end through resistance R31, the base of triode T32 connects L31 end through resistance R32, the collecting electrode of triode T31 connects with the base of triode T33 through resistance R33 after parallelly connected, the V31-end is connected to triode T31's projecting pole, V31-end is connected to triode T32's projecting pole, V32+ end is connected to triode T33's collecting electrode, V31+ end is connected to triode T33's projecting pole, V32+ end is connected to capacitor C31's positive pole, V31-end is connected to capacitor C31's negative pole, V32+ end is connected to capacitor C32's one pin, V31-end is connected to capacitor C32's another pin. The resistor R31, the triode T31, the resistor R33 and the triode T33 form a linkage control circuit, when the P31 end is at a high level, the V32+ end outputs a direct current supply voltage, and when the P31 end is at a low level, the V32+ end outputs a direct current supply voltage to be zero; the resistor R32, the triode T32, the resistor R33 and the triode T33 form a chain control circuit, when the L31 end is at a high level, the V32+ end outputs a direct current supply voltage, and when the L31 end is at a low level, the V32+ end outputs a direct current supply voltage to be zero.

In the above technical solution, the circuit of the light source unit 4 is a prior art, and includes: constant current drive IC and LED light emitting diode, and design 5 lead terminals, P41 end, P42 end, P43 end, V41+ end and V41-end respectively. The control of the light source of the fire-fighting emergency lamp and the control of the sign symbol are realized by utilizing the level changes of the P22 end, the P23 end and the P24 end of the state monitoring unit 2.

Compared with the prior art, the universal fire emergency lamp circuit has the beneficial effects that:

1. the utility model provides a general fire emergency lamp circuit, which realizes the 2-wire system and 4-wire system universality of a system through an inventive conversion unit, realizes the circuit universality of an evacuation marker lamp and an emergency lighting lamp through an inventive interlocking control and light source driving unit, and can ensure that components, production processes and maintenance methods are more unified through the general and combined design, and reduce the comprehensive cost of design, production and maintenance.

2. In addition, the system is matched with an emergency lighting centralized power supply to realize quick and reliable interlocking control by designing the interlocking control and the light source driving unit, the emergency conversion time is shortened, and the emergency conversion can be directly carried out through the interlocking control when the computer, the sensor, the communication equipment and the like are in failure.

Drawings

Fig. 1 is a schematic structural diagram of a general fire emergency lamp circuit according to the present utility model, in which: a 1-2 wire system/4 wire system conversion unit, a 2-state monitoring unit, a 3-linkage control unit and a 4-light source unit;

FIG. 2 is a circuit diagram of a 2-wire/4-wire switching unit of a general fire emergency lighting circuit of the present utility model;

FIG. 3 is a circuit diagram of a status monitoring unit of the general fire emergency lamp circuit of the present utility model;

FIG. 4 is a circuit diagram of a chain control unit of the universal fire emergency lighting device circuit of the present utility model;

FIG. 5 is a circuit diagram of a light source unit of a universal fire emergency lighting fixture circuit of the present utility model;

Detailed Description

The utility model will be further described with reference to specific embodiments and figures 1-5, but the utility model is not limited to these embodiments.

Example 1

As shown in fig. 1, the circuit of the universal fire emergency lamp comprises: a 2-wire system/4-wire system conversion unit 1, a state monitoring unit 2, a interlock control unit 3 and a light source unit 4.

Wherein, the 2-wire/4-wire conversion unit 1 functions as: separating the direct-current voltage for supplying power to the state monitoring unit 2, the interlocking control unit 3 and the light source unit 4 from the 2-wire measurement and control signal; separating a communication signal from a 2-wire measurement and control signal to provide an instruction for the monitoring unit 2; while also providing a interlock control signal to the interlock control unit 3. The 2-wire system/4-wire system conversion unit 1 is designed with terminals of V11+, V11-, V12+, V12-, S11+ and L11, and the wiring mode is as follows: the v11+ terminal and the V11-terminal are input terminals common to the 2-wire system and the 4-wire system of the 2-wire system/4-wire system conversion unit 1, and when applied in the 4-wire system, the v11+ terminal and the V11-terminal serve as power line terminals, and when applied in the 2-wire system, the v11+ terminal and the V11-terminal serve as terminals of the measurement and control line. The V12+ end and the V12-end are the positive electrode and the negative electrode of the direct current power supply output end of the 2-wire system/4-wire system conversion unit 1, the V12+ end and the V12-end are connected with the V21+ end and the V21-end of the monitoring unit 2, the V12+ end and the V12-end are connected with the V31+ end and the V31-end of the interlocking control unit 3, and the V12-end is connected with the V41-end of the light source unit 4. The S11+ end is a communication output end of a 2-wire system, the S11+ end is connected with the S22+ end of the monitoring unit 2, the L11 end is a linkage signal output end of the 2-wire system/4-wire system conversion unit 1, and the L11 end is connected with the L31 end of the linkage control unit 3.

Wherein the status monitoring unit 2 functions as: and receiving instructions of a 2-wire system and a 4-wire system, and realizing linkage control and linkage control of the lamp by utilizing a hardware interface circuit. The state monitoring unit 2 is designed with terminals V21+, V21-, S21+, S21-, S22+, P21, P22, P23 and P24 in the following wiring modes: the V21+ end and the V21-end are the positive electrode and the negative electrode of the direct current power supply input end of the state monitoring unit 2, the V21+ end and the V21-end are connected with the V12+ end and the V12-end of the 2-wire system/4-wire system conversion unit 1, the S22+ end is a communication input end of the 2-wire system, the S22+ end is connected with the S11+ end of the 2-wire system/4-wire system conversion unit 1, the S21+ end and the S21-end are the positive electrode and the negative electrode of the 4-wire system communication input end, the P21 end is a linkage control output end, the P21 end is connected with the P31 end, the P22 end, the P23 end and the P24 end of the linkage control unit 3 are output ends of light source control, and the P22 end, the P23 end and the P24 end are connected with the P41 end, the P42 end and the P43 end of the light source unit 4.

Wherein, the function of the linkage control unit 3: receiving a linkage control signal from the 2-wire system/4-wire system conversion unit 1, and realizing quick and reliable linkage control on the light source unit 4 through an interface circuit; and the linkage control signal from the state monitoring unit 2 is received to realize linkage control on the light source unit 4. The interlocking control unit 3 is designed with V31+, V31-, P31, L31 and V32+ terminals, and the wiring mode is as follows: the P31 end is an input end of linkage control, the P31 end is connected with the P21 end of the state monitoring unit 2, the L31 end is an input end of linkage control, and the L31 end is connected with the L11 end of the 2-wire system/4-wire system conversion unit 1. The v32+ end is an output end of the light source control, and the v32+ end is connected with the v41+ end of the light source unit 4.

Wherein the light source unit 4 functions: the controllable power supply voltage is obtained from the interlock control unit 3, and the controllable illumination is realized by the internal self-contained driving circuit and the LEDs. The light source unit 4 is designed with terminals of V41+, V41-, P41, P42 and P43 in the following wiring modes: the end P41, the end P42 and the end P43 are input ends for controlling the light source, and the end P41, the end P42 and the end P43 are connected with the end P22, the end P23 and the end P24 of the state monitoring unit 2. The V41+ end is an input end of light source control, and the V41+ end is connected with the V32+ end of the interlocking control unit 3. The V41-end is the negative electrode of the direct current power supply input end, and the V41-end is connected with the V12-end of the 2-wire system/4-wire system conversion unit 1.

As shown in fig. 2, the circuit of the 2-wire/4-wire conversion unit 1 includes: transient diode D14, rectifier diode D11, rectifier diode D13, rectifier bridge M11, electrolytic capacitor C11 and ceramic capacitor C12. Two pins of the transient diode D14 are connected with a V11+ end and a V11-end, the positive electrode of the rectifier diode D11 is connected with the V11+ end, and the negative electrode of the rectifier diode D11 is connected with the S11+ end. One AC end of the rectifier bridge M11 is connected with a V11+ end, the other AC end of the rectifier bridge M11 is connected with a V11-end, the V+ end of the rectifier bridge M11 is connected with a V12+ end, the V-end of the rectifier bridge M11 is connected with a V12-end, the positive electrode of the rectifier diode D13 is connected with the V11-end, and the negative electrode of the rectifier diode D13 is connected with an L11 end. Two pins of the ceramic chip capacitor C11 are connected with a V12+ end and a V12-end, the positive electrode of the electrolytic capacitor C12 is connected with the V12+ end, and the negative electrode of the electrolytic capacitor C12 is connected with the V12-end. The rectifying diode D11 is used for extracting 2-wire system communication signals; the rectifier bridge M11, the capacitor C11 and the capacitor C12 act to extract direct-current voltage for power supply; the rectifying diode D13 is used for extracting linkage control signals; the transient diode D14 functions to suppress transient voltage disturbances.

As shown in fig. 3, the circuit of the state monitoring unit 2 is a prior art, and includes: the single-chip MCU and the interface circuit are provided with 9 lead terminals, namely an S21 plus terminal, an S21-terminal, an S22 plus terminal, a V21-terminal, a P21 terminal, a P22 terminal, a P23 terminal and a P24 terminal. Through programming, the MCU can utilize the S21 plus end, the S21-end and the S22 plus end to carry out instruction receiving and transmitting, and execute measurement and control on the V21 end plus, the V21-end, the P21 end, the P22 end, the P23 end and the P24 end, thereby realizing fault detection and light source on-off of the lamp and sign symbol display.

As shown in fig. 4, the circuit of the interlock control unit 3 includes: resistor R31, resistor R32, resistor R33, transistor T31, transistor T32, transistor T33, capacitor C31, and capacitor C32. The base of triode T31 connects P31 end through resistance R31, the base of triode T32 connects L31 end through resistance R32, the collecting electrode of triode T31 connects with the base of triode T33 through resistance R33 after parallelly connected, the V31-end is connected to triode T31's projecting pole, V31-end is connected to triode T32's projecting pole, V32+ end is connected to triode T33's collecting electrode, V31+ end is connected to triode T33's projecting pole, V32+ end is connected to capacitor C31's positive pole, V31-end is connected to capacitor C31's negative pole, V32+ end is connected to capacitor C32's one pin, V31-end is connected to capacitor C32's another pin. The resistor R31, the triode T31, the resistor R33 and the triode T33 form a linkage control circuit, when the P31 end is at a high level, the V32+ end outputs a direct current supply voltage, and when the P31 end is at a low level, the V32+ end outputs a direct current supply voltage to be zero; the resistor R32, the triode T32, the resistor R33 and the triode T33 form a chain control circuit, when the L31 end is at a high level, the V32+ end outputs a direct current supply voltage, and when the L31 end is at a low level, the V32+ end outputs a direct current supply voltage to be zero.

As shown in fig. 5, the circuit of the light source unit 4 is a prior art, and includes: constant current drive IC and LED light emitting diode, and design 5 lead terminals, P41 end, P42 end, P43 end, V41+ end and V41-end respectively. The control of the light source of the fire-fighting emergency lamp and the control of the sign symbol are realized by utilizing the level changes of the P22 end, the P23 end and the P24 end of the state monitoring unit 2.

The universal fire-fighting emergency lamp circuit has good application effect, quick and reliable linkage control, no failure, solves the problem of circuit universality, reduces the comprehensive cost of design, production, maintenance and the like, and does not generate emergency conversion failure phenomenon when simulating faults of a computer, a sensor, communication equipment and the like under extreme conditions.

Claims

1. A universal fire emergency light circuit, the circuit comprising: a 2-wire system/4-wire system conversion unit (1), a state monitoring unit (2), a linkage control unit (3) and a light source unit (4);

the 2-wire system/4-wire system conversion unit (1) has the functions of separating direct-current voltage for supplying power to the state monitoring unit (2), the interlocking control unit (3) and the light source unit (4) from the 2-wire system measurement and control signal, separating communication signals from the 2-wire system measurement and control signal to provide instructions for the monitoring unit (2), and providing interlocking control signals for the interlocking control unit (3); the 2-wire system/4-wire system conversion unit (1) is designed with terminals of V11+, V11-, V12+, V12-, S11+ and L11, and the wiring mode is as follows: the V11+ end and the V11-end are input ends shared by a 2-wire system and a 4-wire system of the 2-wire system/4-wire system conversion unit (1), and when the V11+ end and the V11-end are used as power wire terminals in the 4-wire system, and when the V11+ end and the V11-end are used as terminals of a measurement and control wire in the 2-wire system; the V12+ end and the V12-end are the positive electrode and the negative electrode of the direct current power supply output end of the 2-wire system/4-wire system conversion unit (1), the V12+ end and the V12-end are connected with the V21+ end and the V21-end of the monitoring unit (2), the V12+ end and the V12-end are connected with the V31+ end and the V31-end of the linkage control unit (3), and the V12-end is connected with the V41-end of the light source unit (4); the S11+ end is a communication output end of a 2-wire system, the S11+ end is connected with the S22+ end of the monitoring unit (2), the L11 end is a linkage signal output end of the 2-wire system/4-wire system conversion unit (1), and the L11 end is connected with the L31 end of the linkage control unit (3);

the state monitoring unit (2) is used for receiving 2-wire system and 4-wire system instructions and realizing linkage control and linkage control of the lamp by utilizing a hardware interface circuit; the state monitoring unit (2) is designed with V21+, V21-, S21+, S21-, S22+, P21, P22, P23 and P24 terminals, and the wiring mode is as follows: the V21+ end and the V21-end are the positive electrode and the negative electrode of the direct current power supply input end of the state monitoring unit (2), the V21+ end and the V21-end are connected with the V12+ end and the V12-end of the 2-wire/4-wire conversion unit (1), the S22+ end is a communication input end of the 2-wire, the S22+ end is connected with the S11+ end of the 2-wire/4-wire conversion unit (1), the S21+ end and the S21-end are the positive electrode and the negative electrode of the 4-wire communication input end, the P21 end is a linkage control output end, the P21 end is connected with the P31 end of the linkage control unit (3), the P22 end, the P23 end and the P24 end are output ends of light source control, and the P22 end, the P23 end and the P24 end are connected with the P41 end, the P42 end and the P43 end of the light source unit (4).

The interlocking control unit (3) is used for receiving the interlocking control signal from the 2-wire system/4-wire system conversion unit (1), realizing the quick and reliable interlocking control of the light source unit (4) through the interface circuit, and receiving the interlocking control signal from the state monitoring unit (2) to realize the interlocking control of the light source unit (4); the interlocking control unit (3) is designed with V31+, V31-, P31, L31 and V32+ wiring terminals, and the wiring mode is as follows: the P31 end is an input end of linkage control, the P31 end is connected with the P21 end of the state monitoring unit (2), the L31 end is an input end of linkage control, and the L31 end is connected with the L11 end of the 2-wire system/4-wire system conversion unit (1); the V32+ end is an output end of the light source control, and the V32+ end is connected with a V41+ end of the light source unit (4);

the light source unit (4) is used for acquiring controllable power supply voltage from the interlocking control unit (3), and realizing controllable illumination by utilizing an internal self-contained driving circuit and LEDs; the light source unit (4) is designed with terminals of V41+, V41-, P41, P42 and P43, and the wiring mode is as follows: the P41 end, the P42 end and the P43 end are input ends for controlling the light source, and the P41 end, the P42 end and the P43 end are connected with the P22 end, the P23 end and the P24 end of the state monitoring unit (2); the V41+ end is an input end of light source control, and the V41+ end is connected with a V32+ end of the interlocking control unit (3); the V41-end is the negative electrode of the direct current power supply input end, and the V41-end is connected with the V12-end of the 2-wire system/4-wire system conversion unit (1).

2. A general fire emergency light circuit according to claim 1, wherein the circuit of the 2-wire/4-wire conversion unit (1) comprises: transient diode D14, rectifier diode D11, rectifier diode D13, rectifier bridge M11, electrolytic capacitor C11 and ceramic capacitor C12; two pins of the transient diode D14 are connected with a V11+ end and a V11-end, the positive electrode of the rectifier diode D11 is connected with the V11+ end, and the negative electrode of the rectifier diode D11 is connected with the S11+ end; one AC end of the rectifier bridge M11 is connected with a V11+ end, the other AC end of the rectifier bridge M11 is connected with a V11-end, the V+ end of the rectifier bridge M11 is connected with a V12+ end, the V-end of the rectifier bridge M11 is connected with a V12-end, the positive electrode of the rectifier diode D13 is connected with the V11-end, and the negative electrode of the rectifier diode D13 is connected with an L11 end; two pins of the ceramic chip capacitor C11 are connected with a V12+ end and a V12-end, the positive electrode of the electrolytic capacitor C12 is connected with the V12+ end, and the negative electrode of the electrolytic capacitor C12 is connected with the V12-end; the rectifying diode D11 is used for extracting 2-wire system communication signals; the rectifier bridge M11, the capacitor C11 and the capacitor C12 act to extract direct-current voltage for power supply; the rectifying diode D13 is used for extracting linkage control signals; the transient diode D14 functions to suppress transient voltage disturbances.

3. A general fire emergency light circuit according to claim 1, characterized in that the circuitry of the interlock control unit (3) comprises: resistor R31, resistor R32, resistor R33, transistor T31, transistor T32, transistor T33, capacitor C31, capacitor C32; the base of the triode T31 is connected with the P31 end through a resistor R31, the base of the triode T32 is connected with the L31 end through a resistor R32, the collector of the triode T31 is connected with the base of the triode T33 through a resistor R33 after being connected in parallel, the emitter of the triode T31 is connected with the V31-end, the emitter of the triode T32 is connected with the V31-end, the collector of the triode T33 is connected with the V32+ end, the emitter of the triode T33 is connected with the V31+ end, the positive electrode of the capacitor C31 is connected with the V32+ end, the negative electrode of the capacitor C31 is connected with the V31-end, one pin of the capacitor C32 is connected with the V32+ end, and the other pin of the capacitor C32 is connected with the V31-end; the resistor R31, the triode T31, the resistor R33 and the triode T33 form a linkage control circuit, when the P31 end is at a high level, the V32+ end outputs a direct current supply voltage, and when the P31 end is at a low level, the V32+ end outputs a direct current supply voltage to be zero; the resistor R32, the triode T32, the resistor R33 and the triode T33 form a chain control circuit, when the L31 end is at a high level, the V32+ end outputs a direct current supply voltage, and when the L31 end is at a low level, the V32+ end outputs a direct current supply voltage to be zero.