Fire-fighting emergency lighting device capable of accessing communication network and control method of fire-fighting emergency lighting device

Abstract

The invention discloses a fire-fighting emergency lighting device capable of accessing a communication network and a control method thereof, and relates to the technical field of lighting, the lighting device comprises a lighting module, a communication module, a control module, a power supply module and a rear plate, the lighting device integrates lighting, network communication and power supply management functions, and through modular design, the lighting module can be connected with the communication module. Independent work and cooperative cooperation among the functions are realized. The lighting device not only can provide necessary lighting in daily and emergency scenes, but also can create and maintain a stable and reliable communication network in an environment with extremely weak wireless signals or even without signals. Through the built-in high-performance communication module and the self-adaptive wireless network ad hoc network, the lighting device can autonomously establish a network environment under the condition that only a wired network is accessed, and meanwhile, the lighting device and other communication equipment are supported to form a network cluster so as to enlarge the coverage range, so that the communication capability and the overall safety under the emergency condition are greatly improved.

Description

Technical Field

[0001] The present application relates to the field of lighting technology, and in particular to a fire emergency lighting device that can be connected to a communication network and a control method thereof. Background Art

[0002] In modern buildings and public facilities, fire emergency lighting systems are essential to ensure public safety, especially in providing necessary lighting when power outages or emergencies occur, to help people evacuate safely and support emergency response activities. At the same time, with the development of information technology, people's demand for wireless network connections is growing, even in emergency situations.

[0003] However, existing fire emergency lighting systems and technologies have significant shortcomings in meeting this demand, especially in environments with poor or complete lack of signal coverage. Maintaining a stable wireless network connection is a major challenge in places where signals are weak or non-existent, such as inside large buildings, underground spaces, or in remote areas. Most Wi-Fi extension devices currently on the market rely on existing network infrastructure, which means that if the main network fails or the signal coverage is insufficient, these devices will not work properly. In an emergency, a reliable communication channel is essential for coordinating rescue operations. However, existing fire emergency lighting systems do not consider how to enhance the wireless network coverage on site, which may lead to poor information transmission and affect rescue efficiency. Traditional fire emergency lighting equipment mainly focuses on providing basic lighting functions to help people find safe exits in emergencies. These systems usually do not have any network communication capabilities and cannot provide users with additional services, such as wireless network access. Summary of the invention

[0004] In view of this, an embodiment of the present application provides a fire emergency lighting device that can be connected to a communication network and a control method thereof to improve communication capabilities and overall safety in emergency situations.

[0005] One aspect of an embodiment of the present application provides a fire emergency lighting device that can be connected to a communication network, the lighting device comprising: a lighting module, a communication module, a control module, a power module and a back panel;

[0006] Wherein, the back panel is integrated with a plurality of slots, and the lighting module, the communication module, the control module and the power module are installed on the back panel through the corresponding slots;

[0007] The control module includes a wireless network self-organizing unit, and the wireless network self-organizing unit is used to communicate and interact with an external communication device through a communication module;

[0008] The wireless network self-organizing network unit comprises:

[0009] A neighbor device discovery unit, configured to discover neighbor devices by receiving signal strength and calculate a stability index of a link between the communication module and the neighbor device;

[0010] A routing selection unit, configured to select the neighbor device whose stability index reaches a set threshold as a candidate neighbor device; and select a target neighbor device according to the cumulative path cost carried by the data packet sent by the candidate neighbor device;

[0011] A power adjustment unit, configured to adjust the transmission power of the communication signal of the communication module according to the distance between the communication module and the target neighbor device;

[0012] A routing switching unit, configured to predict the link existence time and switch the target neighbor device according to the predicted link existence time;

[0013] The cluster maintenance unit is used to elect clusters and cluster heads to reduce network overhead.

[0014] In some embodiments, the lighting module includes an emergency warning sign and a lighting lamp.

[0015] In some embodiments, the control module further includes an emergency prompt control unit and a lighting control unit;

[0016] The emergency prompt control unit has a built-in microcontroller, and the emergency prompt control unit is used to receive a signal from at least one of a photosensitive sensor, a smoke sensor or a temperature sensor, and the microcontroller is used to trigger the emergency prompt sign to switch the display mode according to the signal;

[0017] The lighting control unit integrates a PWM dimming circuit and a photosensor, wherein the photosensor is used to dynamically collect ambient brightness, and the lighting control unit is used to control the PWM dimming circuit to adjust the output brightness of the lighting according to the ambient brightness; when the lighting fails, the lighting control unit is used to start neighborhood compensation lighting to maintain a preset minimum safe lighting range.

[0018] In some embodiments, the lighting control unit comprises:

[0019] A brightness adjustment unit, used for dynamically adjusting the output brightness of the lighting lamp according to a brightness control model;

[0020] The brightness control model is:

[0021] ;

[0022] in, Indicates the power required to maintain the minimum safe brightness. Indicates the required brightness of the current scene. Indicates the ambient brightness dynamically detected by the photosensitive sensor. Indicates a proportional coefficient that is dynamically adjusted according to the remaining power of the power module.

[0023] In some embodiments, the communication module includes a network module and an antenna module;

[0024] Wherein, the network module includes a wired antenna and a Wi-Fi module;

[0025] The antenna module includes an omnidirectional gain antenna.

[0026] In some embodiments, the power module includes a main power supply and a backup power supply;

[0027] Wherein, the main power supply includes an AC220V input circuit, a DC36V input circuit and an overvoltage and overcurrent protection circuit;

[0028] The backup power supply includes a replaceable battery.

[0029] In some embodiments, the rear panel is made of a composite material of an aluminum alloy frame and fireproof engineering plastics;

[0030] The rear plate is also provided with a wiring channel;

[0031] A heat sink is disposed on the back of the rear plate, and the heat sink is combined with the independent air ducts of the lighting module and the control module for heat dissipation.

[0032] Another aspect of the present invention provides a control method, which comprises the following steps:

[0033] Discovering neighbor devices by receiving signal strength, and calculating a stability index of a link between the communication module and the neighbor devices;

[0034] Selecting the neighbor device whose link stability index reaches a set threshold as a candidate neighbor device; selecting a target neighbor device according to the cumulative path cost carried by the data packet sent by the candidate neighbor device;

[0035] adjusting the transmission power of the communication signal of the communication module according to the distance between the communication module and the target neighbor device;

[0036] Predicting link existence time and switching the target neighbor device according to the predicted link existence time;

[0037] Elect clusters and cluster heads to reduce network overhead.

[0038] In some embodiments, the step of calculating the path cumulative cost comprises the following steps:

[0039] Calculating the path cumulative cost corresponding to the candidate neighbor device according to the stability index of the link and the residual energy of the candidate neighbor device;

[0040] The calculation formula of the path cumulative cost is:

[0041] ;

[0042] in, Cumulative cost for the path, is the stability index of the link, is the remaining energy of the candidate neighbor device, is the energy weight coefficient, is the number of candidate neighbor devices.

[0043] In some embodiments, adjusting the transmission power of the communication signal of the communication module according to the distance between the communication module and the target neighbor device comprises the following steps:

[0044] The transmission power of the communication signal of the communication module is adjusted according to the distance between the communication module and the target neighbor device:

[0045] ;

[0046] in, is the transmission power, is the maximum power, For distance, is the system loss, is the minimum power at which the communication signal can be correctly decoded by the target neighbor device, is the transmit antenna gain, is the receiving antenna gain, is the wavelength.

[0047] This application includes at least the following beneficial effects:

[0048] The lighting device of the present application includes a lighting module, a communication module, a control module, a power module and a back panel. The lighting device integrates lighting, network communication and power management functions, and realizes independent operation and coordinated cooperation between various functions through modular design. The lighting device can not only provide necessary lighting in daily and emergency scenarios, but also create and maintain a stable and reliable communication network in an environment where the wireless signal is extremely weak or even without a signal. Through the built-in high-performance communication module and adaptive wireless network ad hoc network, the lighting device can autonomously establish a network environment when only accessing a wired network, and at the same time support the formation of a network cluster with other communication devices to expand the coverage, greatly improving the communication capability and overall safety in emergency situations. BRIEF DESCRIPTION OF THE DRAWINGS

[0049] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0050] Figure 1 A schematic diagram of the structure of a fire emergency lighting device that can be connected to a communication network provided in an embodiment of the present application;

[0051] Figure 2 A flow chart of the steps of a control method provided in an embodiment of the present application;

[0052] Figure 3 An example flow chart of an efficient wireless network self-organizing method provided in an embodiment of the present application;

[0053] Figure 4 A schematic diagram of the flow chart of the cooperative working principle of various modules of a fire emergency lighting device provided in an embodiment of the present application;

[0054] Figure 5 A schematic diagram of a fire emergency evacuation sign lamp (only a safety exit sign) provided in an embodiment of the present application;

[0055] Figure 6 A schematic diagram of a fire emergency lighting fixture (lighting lamp only) provided in an embodiment of the present application;

[0056] Figure 7 A schematic diagram of the application of the fire emergency lighting device provided in an embodiment of the present application in an underground parking lot.

[0057] Figure numerals: 1 is an emergency warning sign, 2 is a lighting lamp, 3 is an antenna module, 4 is a network module, 5 is a back panel, 6 is a lighting lamp control unit, 7 is a power module, and 8 is an emergency warning control unit. DETAILED DESCRIPTION

[0058] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0059] Reference Figure 1 , the embodiment of the present application provides a fire emergency lighting device that can be connected to a communication network, the lighting device includes: a lighting module, a communication module, a control module, a power module 7 and a back panel 5;

[0060] The rear panel 5 is integrated with a plurality of slots, and the lighting module, the communication module, the control module and the power module 7 are installed on the rear panel 5 through the corresponding slots;

[0061] The control module includes a wireless network self-organizing unit, and the wireless network self-organizing unit is used to communicate and interact with an external communication device through a communication module;

[0062] The wireless network self-organizing network unit comprises:

[0063] A neighbor device discovery unit, configured to discover neighbor devices by receiving signal strength and calculate a stability index of a link between the communication module and the neighbor device;

[0064] A routing selection unit, configured to select the neighbor device whose stability index reaches a set threshold as a candidate neighbor device; and select a target neighbor device according to the cumulative path cost carried by the data packet sent by the candidate neighbor device;

[0065] A power adjustment unit, configured to adjust the transmission power of the communication signal of the communication module according to the distance between the communication module and the target neighbor device;

[0066] A routing switching unit, configured to predict the link existence time and switch the target neighbor device according to the predicted link existence time;

[0067] The cluster maintenance unit is used to elect clusters and cluster heads to reduce network overhead.

[0068] Optionally, the lighting module includes an emergency warning sign 1 and a lighting lamp 2.

[0069] Optionally, the control module further includes an emergency prompt control unit 8 and a lighting control unit 6;

[0070] The emergency prompt control unit 8 has a built-in microcontroller, and the emergency prompt control unit 8 is used to receive a signal from at least one of a photosensitive sensor, a smoke sensor or a temperature sensor, and the microcontroller is used to trigger the emergency prompt sign 1 to switch the display mode according to the signal;

[0071] The lighting control unit 6 integrates a PWM dimming circuit and a photosensor, wherein the photosensor is used to dynamically collect ambient brightness, and the lighting control unit 6 is used to control the PWM dimming circuit to adjust the output brightness of the lighting lamp 2 according to the ambient brightness; when the lighting lamp 2 fails, the lighting control unit 6 is used to start neighborhood compensation lighting to maintain a preset minimum safe lighting range.

[0072] Optionally, the lighting control unit 6 comprises:

[0073] A brightness adjustment unit, used for dynamically adjusting the output brightness of the lighting lamp 2 according to a brightness control model;

[0074] The brightness control model is:

[0075] ;

[0076] in, Indicates the power required to maintain the minimum safe brightness. Indicates the required brightness of the current scene. Indicates the ambient brightness dynamically detected by the photosensitive sensor. Indicates a proportionality coefficient that is dynamically adjusted according to the remaining power of the power module 7.

[0077] Optionally, the communication module includes a network module 4 and an antenna module 3;

[0078] Wherein, the network module 4 includes a wired antenna and a Wi-Fi module;

[0079] The antenna module 3 includes an omnidirectional gain antenna.

[0080] Optionally, the power module 7 includes a main power supply and a backup power supply;

[0081] Wherein, the main power supply includes an AC220V input circuit, a DC36V input circuit and an overvoltage and overcurrent protection circuit;

[0082] The backup power supply includes a replaceable battery.

[0083] Optionally, the rear panel 5 is made of a composite material of an aluminum alloy frame and fireproof engineering plastics;

[0084] The rear plate 5 is also provided with a wiring channel;

[0085] A heat sink is disposed on the back of the rear plate 5 , and the heat sink is combined with the independent air ducts of the lighting module and the control module for heat dissipation.

[0086] Reference Figure 2 Another aspect of the embodiment of the present application further provides a control method, the control method comprising the following steps S100~S140:

[0087] S100: discovering a neighbor device by receiving a signal strength, and calculating a stability index of a link between the communication module and the neighbor device;

[0088] S110: Select the neighbor device whose link stability index reaches a set threshold as a candidate neighbor device; select a target neighbor device according to the cumulative path cost carried by the data packet sent by the candidate neighbor device;

[0089] S120: adjusting the transmission power of the communication signal of the communication module according to the distance between the communication module and the target neighbor device;

[0090] S130: predicting the link existence time and switching the target neighbor device according to the predicted link existence time;

[0091] S140: Elect clusters and cluster heads to reduce network overhead.

[0092] Optionally, the step of calculating the path cumulative cost comprises the following steps:

[0093] Calculating the path cumulative cost corresponding to the candidate neighbor device according to the stability index of the link and the residual energy of the candidate neighbor device;

[0094] The calculation formula of the path cumulative cost is:

[0095] ;

[0096] in, Cumulative cost for the path, is the stability index of the link, is the remaining energy of the candidate neighbor device, is the energy weight coefficient, is the number of the candidate neighbor devices.

[0097] Optionally, adjusting the transmission power of the communication signal of the communication module according to the distance between the communication module and the target neighbor device comprises the following steps:

[0098] The transmission power of the communication signal of the communication module is adjusted according to the distance between the communication module and the target neighbor device:

[0099] ;

[0100] in, is the transmission power, is the maximum power, For distance, is the system loss, is the minimum power at which the communication signal can be correctly decoded by the target neighbor device, is the transmit antenna gain, is the receiving antenna gain, is the wavelength.

[0101] Next, the solution of the embodiment of the present application will be introduced and explained in detail with reference to specific application examples.

[0102] 1. Overall structure.

[0103] This embodiment provides a fire emergency lighting device that can be connected to a communication network, and still refers to Figure 1 The lighting device may include a box body, a safety exit sign (i.e., emergency warning sign 1) is installed on the front plate of the box body, a lighting lamp 2 is installed on the top of the box body, a power module 7, a lighting lamp control unit 6, and a network module 4 are installed on the rear plate 5, and the other end of the extension wire of the power module 7 can be connected to the mains. The network module 4 is externally connected to the antenna module 3. On the lower edge of the box body, a safety exit sign control unit (i.e., emergency warning control unit 8) is installed. The lighting module includes a safety exit sign and a lighting lamp 2, and the lighting module can: provide emergency lighting and dynamic safety exit guidance. The control module includes a lighting lamp control unit 6 and a safety exit sign control unit, and the control module can support environmental parameter response and remote command execution. The communication module includes an antenna module 3 and a network module 4, and the communication module can realize wired and wireless multi-mode communication and data interaction. The main power supply of the power module 7 and the backup lithium battery are used for power supply. The rear plate 5 integrates a module slot and a heat dissipation structure to support quick installation.

[0104] 2. Modular structure design.

[0105] 2.1 Rear panel 5.

[0106] Material and structure: It adopts aluminum alloy frame and fire-proof engineering plastic composite material, with internal module slots and wiring channels to support "plug and play" of each module.

[0107] Heat dissipation design: The back of the rear panel 5 is equipped with heat dissipation fins, combined with independent air ducts of the lighting module and the control module to ensure stability in high temperature environments.

[0108] 2.2 Lighting module.

[0109] ‌Safety exit sign: It uses a high-brightness LED array, supports red and green dual-color switching, and realizes three modes of flashing, breathing, and constant light through the control module.

[0110] ‌Lighting 2: Built-in COB integrated light source, supports brightness adjustment based on ambient light sensor or remote command.

[0111] 2.3 Control module.

[0112] Lighting control unit 6: Integrates PWM dimming circuit and photosensor to collect ambient brightness in real time and automatically adjust the output of lighting 2. When a lamp fails, it starts neighborhood compensation lighting to maintain the minimum safe lighting range.

[0113] ‌Safety exit sign control unit: Built-in microcontroller (MCU), supports receiving signals from light sensors, smoke sensors, and temperature sensors, and triggers the safety exit sign mode switching (such as high-frequency flashing red in case of fire).

[0114] The control module as a whole mainly adopts an adaptive brightness adjustment control method based on dynamic environment perception, including the following steps:

[0115] The brightness control model of the lighting device is constructed as follows:

[0116] ;

[0117] in Indicates the power required to maintain the minimum safe brightness. Indicates the required brightness of the current scene. Indicates the ambient brightness detected by the light sensor in real time. Indicates the proportionality factor (dynamically adjusted according to the remaining battery power, reduced when the battery is low to save energy).

[0118] 2.4 Communication module.

[0119] ‌Network module 4: Equipped with wired and wireless access and Wi-Fi modules, supports multi-terminal network self-organizing and supports communication with cloud platforms.

[0120] Antenna module 3: An omnidirectional high-gain antenna is installed on the top of the rear panel 5 to ensure the minimum signal coverage radius.

[0121] Network module 4 adopts an efficient wireless network self-organizing method based on dynamic topology perception, link quality evaluation, energy optimization and distributed control. Figure 3 , including the following steps:

[0122] 1) Neighbor discovery: Periodically broadcast beacons and calculate RSSI and link stability.

[0123] Neighbor discovery is achieved through beacon signals, and link stability is calculated.

[0124] The received signal strength indicator (RSSI) is expressed as:

[0125] ;

[0126] in, is the transmission power, is the path loss exponent, For distance, is the shadow fading noise.

[0127] Link stability index It is expressed as:

[0128] ;

[0129] ETX (Expected Transmission Count) indicates the link transmission success rate. is the relative moving speed, is the weight parameter.

[0130] 2) Routing request: The source node broadcasts a RREQ packet carrying the cumulative path cost C.

[0131] Among them, RREQ (Route Request) is a route request packet used to initiate a route request in the network.

[0132] Energy-aware routing protocols are used to select paths with high stability and low energy consumption. It is expressed as:

[0133] ;

[0134] in is the link stability indicator, is the remaining energy of the neighboring device, is the energy weight coefficient. Select The smallest path.

[0135] 3) Routing selection: The intermediate node updates C, and the destination node selects the minimum cost path to reply to the RREP.

[0136] Among them, RREP (Route Reply) is a routing response packet used to respond to RREQ and confirm a valid routing path.

[0137] 4) Power adjustment: Dynamically adjust the transmission power according to the communication distance.

[0138] Adaptive power control is used to dynamically adjust the transmit power to save energy. The transmit power based on distance is expressed as:

[0139] ;

[0140] Calculate the minimum power required, is the transmission power, is the maximum power, For distance, is the system loss, is the minimum power at which the communication signal can be correctly decoded by the target neighbor device. is the transmit antenna gain, is the receiving antenna gain; is the wavelength, for example in the WiFi band , then the wavelength .

[0141] 5) Link maintenance: monitor T and trigger route repair if it is lower than the threshold.

[0142] Mobility management and link prediction are used to predict link lifetime to switch routes in advance. It is expressed as:

[0143] ;

[0144] in is the communication radius, is the current distance, is the relative speed.

[0145] 6) Cluster maintenance: periodically re-elect cluster heads to balance the load.

[0146] Clustering and cluster head election are used to reduce network overhead and improve scalability. The cluster head election weight is expressed as:

[0147] ;

[0148] in, is the cluster head election weight, is the neighbor density, is the remaining energy, is the moving speed; , , is the weight parameter, the sum of which is 1.

[0149] 2.5 Power module 7.

[0150] ‌Main power input: supports AC220V and DC36V dual input, with built-in overvoltage and overcurrent protection circuit.

[0151] ‌Backup power supply: Built-in replaceable battery pack. Lead-acid batteries cannot be used. Lithium batteries that do not contain cobalt should be used. Automatically switch when the main power supply is cut off. The battery life is ≥1.5 hours.

[0152] 3. Principle of collaborative work.

[0153] like Figure 4 As shown, the collaborative working principle of each module of the fire emergency lighting device is as follows:

[0154] 1. Daily monitoring mode.

[0155] The communication module regularly uploads the device status (such as power supply voltage, LED life, network signal strength) to the management platform, and the wireless network signal strength is maintained for normal use. Lighting 2 maintains the basic brightness (such as 50 lumens) according to the ambient light sensor data.

[0156] 2. Emergency response mode.

[0157] a) Fire scenario:

[0158] Receive the fire alarm signal from the fire protection system (through the communication module), the lighting 2 switches to the maximum brightness, and the emergency exit sign flashes red at a high frequency. The power module 7 switches to the backup battery to ensure continuous operation. When the backup power supply is lower than the threshold, the wireless network signal strength is gradually reduced to give priority to the fire emergency response.

[0159] b) Power outage scenario:

[0160] After the main power supply is interrupted, the power module 7 switches to the backup battery, and the lighting 2 and the emergency exit sign maintain the current mode.

[0161] 3. Power supply redundancy switching logic.

[0162] When the main power supply is normal, the lithium battery is in a floating charge state; when the main power supply voltage is lower than the threshold, the switching circuit is started and the backup battery takes over the load.

[0163] In addition, if Figure 5 and Figure 6 As shown, according to different usage scenarios, fire emergency evacuation sign lamps (only safety exit signs) or fire emergency lighting lamps (only lighting lamp 2) can also be provided. Other fire emergency lighting devices that can be connected to the communication network are all within the scope of the solution of this application.

[0164] For example, a schematic diagram of an underground parking lot application of this embodiment is as follows: Figure 7 As shown, fire emergency lighting devices should be placed on the walls of underground parking lots, mainly for daily monitoring and fire response. The details are as follows:

[0165] 1. Daily monitoring: Report the device status to the building management platform at regular intervals to provide users with additional wireless network signal access.

[0166] 2. Fire response: After receiving the fire alarm, the safety exit sign flashes red, the lighting lamp 2 is fully lit, and the emergency broadcast system is triggered through the network module 4 to broadcast the evacuation instructions. A self-healing communication network is formed through self-organizing network, which increases the communication radius of a single node and supports real-time data interaction with the fire control center and building management platform. When the lighting lamp 2 fails, the neighborhood compensation lighting is started to maintain the minimum safe lighting range. The network module 4 of multiple fire emergency lighting devices performs efficient wireless network self-organizing based on dynamic topology perception, link quality assessment, energy optimization and distributed control.

[0167] The steps of wireless network ad hoc networking can refer to the above embodiment and will not be described again here.

[0168] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0169] Although the embodiments of the present application have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present application, and that the scope of the present application is defined by the claims and their equivalents.

[0170] The above is a specific description of the preferred implementation of the present application, but the present application is not limited to the described embodiments. Technical personnel familiar with the field may make various equivalent modifications or substitutions without violating the spirit of the present application. These equivalent modifications or substitutions are all included in the scope defined by the claims of the present application.

Claims

1. A fire emergency lighting device that can be connected to a communication network, characterized in that: The lighting device comprises: a lighting module, a communication module, a control module, a power module and a back panel; Wherein, the back panel is integrated with a plurality of slots, and the lighting module, the communication module, the control module and the power module are installed on the back panel through the corresponding slots; The control module includes a wireless network self-organizing unit, and the wireless network self-organizing unit is used to communicate and interact with an external communication device through a communication module; The wireless network self-organizing network unit comprises: A neighbor device discovery unit, configured to discover neighbor devices by receiving signal strength and calculate a stability index of a link between the communication module and the neighbor device; A routing selection unit, configured to select the neighbor device whose stability index reaches a set threshold as a candidate neighbor device; and select a target neighbor device according to the cumulative path cost carried by the data packet sent by the candidate neighbor device; A power adjustment unit, configured to adjust the transmission power of the communication signal of the communication module according to the distance between the communication module and the target neighbor device; A routing switching unit, configured to predict the link existence time and switch the target neighbor device according to the predicted link existence time; The cluster maintenance unit is used to elect clusters and cluster heads to reduce network overhead.

2. A fire emergency lighting device capable of accessing a communication network according to claim 1, characterized in that: The lighting module includes an emergency warning sign and a lighting lamp.

3. A fire emergency lighting device capable of accessing a communication network according to claim 2, characterized in that: The control module also includes an emergency prompt control unit and a lighting control unit; The emergency prompt control unit has a built-in microcontroller, and the emergency prompt control unit is used to receive a signal from at least one of a photosensitive sensor, a smoke sensor or a temperature sensor, and the microcontroller is used to trigger the emergency prompt sign to switch the display mode according to the signal; The lighting control unit integrates a PWM dimming circuit and a photosensor, wherein the photosensor is used to dynamically collect ambient brightness, and the lighting control unit is used to control the PWM dimming circuit to adjust the output brightness of the lighting according to the ambient brightness; when the lighting fails, the lighting control unit is used to start neighborhood compensation lighting to maintain a preset minimum safe lighting range.

4. A fire emergency lighting device capable of accessing a communication network according to claim 3, characterized in that: The lighting control unit comprises: A brightness adjustment unit, used for dynamically adjusting the output brightness of the lighting lamp according to a brightness control model; The brightness control model is: ； in, Indicates the power required to maintain the minimum safe brightness. Indicates the required brightness of the current scene. Indicates the ambient brightness dynamically detected by the photosensitive sensor. Indicates a proportional coefficient that is dynamically adjusted according to the remaining power of the power module.

5. The fire emergency lighting device capable of accessing a communication network according to claim 1, characterized in that: The communication module includes a network module and an antenna module; Wherein, the network module includes a wired antenna and a Wi-Fi module; The antenna module includes an omnidirectional gain antenna.

6. A fire emergency lighting device capable of accessing a communication network according to claim 1, characterized in that: The power supply module includes a main power supply and a backup power supply; Wherein, the main power supply includes an AC220V input circuit, a DC36V input circuit and an overvoltage and overcurrent protection circuit; The backup power supply includes a replaceable battery.

7. A fire emergency lighting device capable of accessing a communication network according to any one of claims 1 to 6, characterized in that: The rear panel is made of a composite material of an aluminum alloy frame and fireproof engineering plastics; The rear plate is also provided with a wiring channel; A heat sink is disposed on the back of the rear plate, and the heat sink is combined with the independent air ducts of the lighting module and the control module for heat dissipation.

8. A control method, characterized in that: The control method comprises the following steps: Discovering neighbor devices by receiving signal strength, and calculating a stability index of a link between the communication module and the neighbor devices; Selecting the neighbor device whose link stability index reaches a set threshold as a candidate neighbor device; selecting a target neighbor device according to the cumulative path cost carried by the data packet sent by the candidate neighbor device; adjusting the transmission power of the communication signal of the communication module according to the distance between the communication module and the target neighbor device; Predicting link existence time and switching the target neighbor device according to the predicted link existence time; Elect clusters and cluster heads to reduce network overhead.

9. A control method according to claim 8, characterized in that: The step of calculating the cumulative cost of the path comprises the following steps: Calculating the path cumulative cost corresponding to the candidate neighbor device according to the stability index of the link and the residual energy of the candidate neighbor device; The calculation formula of the path cumulative cost is: ； in, Cumulative cost for the path, is the stability index of the link, is the remaining energy of the candidate neighbor device, is the energy weight coefficient, is the number of candidate neighbor devices.

10. A control method according to any one of claims 8 to 9, characterized in that: The step of adjusting the transmission power of the communication signal of the communication module according to the distance between the communication module and the target neighbor device comprises the following steps: The transmission power of the communication signal of the communication module is adjusted according to the distance between the communication module and the target neighbor device: ； in, is the transmission power, is the maximum power, For distance, is the system loss, is the minimum power at which the communication signal can be correctly decoded by the target neighbor device, is the transmit antenna gain, is the receiving antenna gain, is the wavelength.

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