CN113112720A - Intelligent evacuation guidance system based on visible light communication - Google Patents
Intelligent evacuation guidance system based on visible light communication Download PDFInfo
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- CN113112720A CN113112720A CN202110350658.5A CN202110350658A CN113112720A CN 113112720 A CN113112720 A CN 113112720A CN 202110350658 A CN202110350658 A CN 202110350658A CN 113112720 A CN113112720 A CN 113112720A
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B7/00—Signalling systems according to more than one of groups G08B3/00 - G08B6/00; Personal calling systems according to more than one of groups G08B3/00 - G08B6/00
- G08B7/06—Signalling systems according to more than one of groups G08B3/00 - G08B6/00; Personal calling systems according to more than one of groups G08B3/00 - G08B6/00 using electric transmission, e.g. involving audible and visible signalling through the use of sound and light sources
- G08B7/066—Signalling systems according to more than one of groups G08B3/00 - G08B6/00; Personal calling systems according to more than one of groups G08B3/00 - G08B6/00 using electric transmission, e.g. involving audible and visible signalling through the use of sound and light sources guiding along a path, e.g. evacuation path lighting strip
Abstract
The invention discloses an intelligent evacuation guidance system based on visible light communication, which comprises a POE emergency lamp system and a bidirectional evacuation indicator lamp system, wherein the POE emergency lamp system comprises a plurality of POE emergency lamps which are arranged at the entrance and the exit of a building and used for receiving evacuation guidance information and transmitting visible light signals to the bidirectional evacuation indicator lamp system; two-way sparse pilot lamp system includes a plurality of two-way sparse pilot lamps, and a plurality of two-way sparse pilot lamps are inside can to send evacuation guide information with visible light signal's mode each other, and a plurality of two-way sparse pilot lamps still are used for receiving the evacuation guide information visible light signal that POE emergency light sent, and a plurality of two-way sparse pilot lamps send evacuation guide information with the visible light form according to the instruction direction of self direction and position adjustment self according to the information of receipt. The invention can provide reliable evacuation guidance information for people in the surrounding buildings when an accident occurs, shortens evacuation time and reduces accident loss.
Description
Technical Field
The invention relates to the field of emergency rescue, in particular to an intelligent evacuation guidance system based on visible light communication.
Background
In recent years, the situation in the field of emergency management in China is very severe, various major and extra-major accidents occur frequently, and the major losses are caused to the life safety and property loss of people. Due to the characteristics of wide accident hazard range and serious damage consequences, when people needing evacuation around an accident urgently escape from the area where the accident is located in emergency response, traffic jam and emergency evacuation disorder are easily caused. Meanwhile, the accident may damage life line engineering such as building power and network, further causing difficulty in accurately studying and judging the development state of the accident and the danger change of the evacuation path for the evacuation personnel, and bringing great potential safety hazard to personnel evacuation in the accident scene. Therefore, a reliable intelligent evacuation guidance system in an accident scenario is very necessary.
Emergency lighting and evacuation indicator lamps should be arranged in evacuation channels in public buildings according to the requirements of national standard fire codes for building design (GB50016-2014(2018 edition)). However, most of the existing emergency lights have only a single lighting function (yi jiang sun, an emergency light [ P ] china, 202010277650.6,2020-07-24), while the common evacuation indicator lights are mostly one-way indicator lights, the evacuation direction is designed and installed in advance according to the actual scene, and rapid adjustment cannot be performed for scene change and accident development (cai cheng feng, qin guan long, niying, an LED evacuation indicator light [ P ] china, 201611242222.X, 2017-05-17). The existing intelligent evacuation indicator lamp is usually focused on the aspects of evacuation route planning and the like, the evacuation indicator signal transmission mode is rarely optimized (Chen Guassian, Lixu, Zhou Li, and the like.) A chemical industry park accident self-adaptive intelligent emergency evacuation guidance system and method [ P ] China, 202011297560.X,2020-08-17), and the traditional optical fiber network is very easy to be influenced by accident disasters and is invalid.
Disclosure of Invention
In order to solve the problems, the application provides an intelligent evacuation guidance system based on visible light communication, which can actively guide and correct the escape direction of evacuation personnel and avoid the evacuation personnel from entering a high-risk area by mistake.
In order to achieve the above-mentioned object, the present invention provides an intelligent evacuation guidance system based on visible light communication, which comprises a POE emergency lamp system and a bidirectional evacuation indicator lamp system,
the POE emergency lamp system comprises a plurality of POE emergency lamps, the POE emergency lamps are arranged at an entrance and an exit of a building and used for receiving evacuation guide information, providing illumination according to the evacuation guide information and transmitting visible light signals to the bidirectional evacuation indicator lamp system;
two-way evacuation pilot lamp system includes a plurality of two-way evacuation pilot lamp, and is a plurality of two-way evacuation pilot lamp all sets up on building the structure, and is a plurality of two-way evacuation pilot lamp is inside can be with evacuation guide information send with visible light signal's mode each other, and is a plurality of two-way evacuation pilot lamp still is used for receiving the evacuation guide information visible light signal that POE emergency light sent, and is a plurality of two-way evacuation pilot lamp sends evacuation guide information with the visible light form according to the instruction direction information according to the information of receipt and direction of oneself and position adjustment self.
The scheme of the invention is further improved, each POE emergency lamp comprises a first processing execution module and a first power management module for supplying power to the first processing execution module, and the first processing execution module is used for receiving and processing evacuation guide information, converting the evacuation guide information into a visible light signal and sending the visible light signal to a bidirectional evacuation indicator lamp system.
In a further improvement of the scheme of the present invention, each first power management module includes a first voltage transforming and stabilizing unit, and the first voltage transforming and stabilizing unit is configured to transform and stabilize a dc voltage input by the POE power supply line, and output the dc voltage to the first processing execution module for power supply.
In a further improvement of the scheme of the present invention, the first power management module further includes a first battery unit, and the first battery unit is connected to the first voltage transforming and stabilizing unit.
In a further improvement of the solution of the present invention, each of the first processing executing modules includes a first central processing unit, a first signal converting module and a first light emitting module which are connected in sequence,
the first central processing unit is used for receiving evacuation guide information input by the POE line and transmitting the processed information to the first signal conversion module;
the first signal conversion module is used for receiving the information transmitted by the first central processing unit and converting the information into a control signal for controlling the first light emitting module to emit light and flicker;
the first light emitting module is used for receiving the control signal sent by the first signal conversion module and transmitting the visible light signal according to the control signal.
In a further improvement of the scheme of the invention, each bidirectional evacuation indicator lamp comprises a direction and position discriminating device, a second processing execution module and a second power supply management module for supplying power,
the direction and position judging device is used for judging the installation direction and the position of the bidirectional evacuation indicator lamp and transmitting the direction information and the position information to the second processing execution module;
the second processing execution module is used for receiving the visible light signal containing the evacuation guide information, the direction information and the position information, adjusting the indication direction of the second processing execution module, and sending the evacuation guide information in a visible light mode according to the indication direction information.
In a further improvement of the solution of the present invention, each direction and position determination device comprises a direction determination unit for determining a direction and a position determination unit for determining a position.
In a further improvement of the present invention, each of the second power management modules includes a second voltage transforming and stabilizing unit, and the second voltage transforming and stabilizing unit is configured to output a dc voltage to the second processing execution module.
In a further improvement of the solution of the present invention, each second power management module further includes a second large-capacity storage battery, and the second large-capacity storage battery is electrically connected to the second voltage transforming and stabilizing unit.
In a further improvement of the scheme of the invention, each second processing execution module comprises a light receiving device, a second central processing unit, a second signal conversion module and a second light reflecting device which are connected in sequence;
the light receiving device is used for receiving visible light signals for transmitting evacuation guide information, converting the visible light signals into electric signals and transmitting the electric signals to the second central processing unit;
the second central processing unit is used for receiving and processing the electric signal sent by the light receiving device and the direction information and the position information sent by the direction and position judging device, judging the indication direction of the second central processing unit, and transmitting the indication direction information to the second light reflecting device;
the second signal conversion module is used for receiving the indication direction information transmitted by the second central processing unit, converting the indication direction information into a control signal and transmitting the control signal to the second light emitting device;
the second light emitting device receives the control signal and emits a light signal according to the control signal to guide evacuation.
Compared with the prior art, the invention has the following beneficial effects:
(1) according to the invention, the indication direction can be adjusted in time by adopting the bidirectional evacuation indicator lamp according to the position information and the direction information of the bidirectional evacuation indicator lamp and combining the evacuation guide information, so that the evacuation direction of the bidirectional evacuation indicator lamp can be changed in time according to scene change and accident development change, the evacuation personnel flow of each route can be optimized conveniently, the evacuation guide work efficiency is higher, and evacuation is more orderly.
(2) This system adopts visible light communication's mode, and evacuation guide information is through POE emergency light to the visible light signal propagation of multihop reaches each two-way evacuation pilot lamp, and signal transmission is not received the broken influence of net and the terminal destroyed of cutting off the power supply, has higher robustness.
(3) The POE emergency light of this system adopts the POE circuit, and the electric energy is unified with signal transmission, and two-way sparse pilot lamp only needs on-the-spot power supply line direct power supply, need not the net twine, and the wiring is convenient, can be along with all ring edge borders change mounted position, quantity and direction in a flexible way, has higher environmental suitability and lower cost, and easily management is updated.
(4) The system can be used in places such as workshops, buildings and places with dense personnel, and has various application scenes.
Drawings
Fig. 1 is a schematic structural diagram of an intelligent evacuation guidance system based on visible light communication according to an embodiment of the present invention.
Fig. 2 is a system module visible light communication network topology diagram provided in the embodiment of the present invention.
Fig. 3 is a schematic view of visible light communication of a system module according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, an embodiment of the present invention provides an intelligent evacuation guidance system based on visible light communication, including a POE emergency light system and a bidirectional evacuation indicator light system.
In one embodiment of the present invention, the POE emergency light system includes a plurality of POE emergency lights 1, the POE emergency lights 1 are all installed at the building entrance/exit, and are used for providing illumination to the evacuation personnel in the power-off and power-off states around the accident site, receiving the evacuation guidance information determined by the central control room according to the existing algorithm or expert experience decision, processing and converting the evacuation guidance information, and transmitting the information to the peripheral bidirectional evacuation indicator lights 2 in the form of visible light signals by using the high-speed flashing of the POE emergency lights to illuminate the light.
Two-way evacuation pilot lamp system includes a plurality of two-way evacuation pilot lamp 2, two-way evacuation pilot lamp 2 is all installed in each inside position of building structure, an evacuation guide information visible light signal for receiving among POE emergency light or the two-way evacuation pilot lamp system other two-way evacuation pilot lamp sends, combine the two-way evacuation direction of self and actual position intelligent regulation, direct instruction and correction evacuation personnel action and direction of fleing, and as relay signal source, utilize the high-speed scintillation of two-way evacuation pilot light, give other or next-level two-way evacuation pilot lamp with the mode transmission of visible light signal with evacuation guide information.
Every POE emergency light 1 all includes first power management module 11 and first processing execution module 12, and first power management module 11 is used for the direct current voltage vary voltage steady voltage and the storage of POE power supply line input, for the power supply of first processing execution module 12.
In one embodiment of the present invention, each of the POE emergency lamps 1 is powered by direct current through active Ethernet (POE) and transmits evacuation guidance information, so as to reduce emergency lamp wiring, and the POE line and the building Power cable are independent from each other, which is not affected by a Power failure condition, thereby improving robustness of the intelligent evacuation guidance system in an accident.
In one embodiment of the present invention, the first power management module 11 includes a first transforming and voltage stabilizing unit 111 and a first large-capacity storage battery 112, wherein the first transforming and voltage stabilizing unit 111 can transform and stabilize the dc voltage input by the POE power supply line, and output a stable dc voltage available for the first process execution module 12 to supply power thereto. The first large-capacity storage battery 112 is charged and stored by the voltage transformation and stabilization unit 111, so as to continue to supply power to the POE emergency lamp 1 in case of power failure or other situations, so that the evacuation guidance system provided by the present invention can continuously operate.
In one embodiment of the present invention, the first transforming and voltage stabilizing unit 111 is a DC-DC transforming and voltage stabilizing chip.
Further, the electricity storage capacity of the first large-capacity storage battery should meet the lighting time required by the relevant standard specification under the full-power load of the POE emergency lamp.
The first processing execution module 12 includes a first central processing unit 121, a first signal conversion module 122 and a first light emitting device 123, and is configured to receive evacuation guide information input by a POE line, convert the network signal into a visible light signal, and send the visible light signal to a next-stage bidirectional evacuation indicator lamp through the first light emitting device 123.
Wherein, whether the POE emergency lamp is started for illumination is judged according to the power supply mode of the first power management module 11 and whether evacuation guide information is input in the line. 11 power supply mode of first power management module includes that first vary voltage regulator unit directly supplies power or first large capacity battery power supply, when the unable direct power supply of first vary voltage regulator unit 111, perhaps during the sparse guide information of POE line input, POE emergency light opens.
In one embodiment of the present invention, the first light emitting device 123 is a light bulb.
In one embodiment of the present invention, the first central processing unit 121 is configured to receive evacuation guidance information input by a POE line, process the evacuation guidance information, and transmit the processed evacuation guidance information to the first signal conversion module 122.
The first signal conversion module 122 may receive the evacuation guiding information transmitted from the first central processing unit 121, decode the network signal and convert the network signal into a control signal for controlling the LED lamp to flash, and transmit the control signal to the first light emitting device 123.
The first light emitting device 123 is used for providing illumination for accidents, and simultaneously, high-speed bright and dark flickers which are difficult to be identified by human eyes can be performed according to the control signal transmitted by the first signal conversion module 122, and the visible light is used as a carrier to send evacuation guide information while providing illumination.
In one embodiment of the present invention, the first light emitting device 123 is an LED bulb.
Each two-way evacuation indicator lamp 2 all includes second power management module 21, second and handles execution module 23 and direction position discrimination device 22 for receive the visual light signal of evacuation guide information that POE emergency light or other two-way evacuation indicator lamps sent, combine the two-way evacuation direction of instruction of self direction and actual position adjustment.
In one embodiment of the invention, each bidirectional evacuation indicator lamp can be directly powered by a field power supply line, does not need a network cable, can be adapted to various sockets and wiring modes, is convenient to wire, can flexibly change the installation position, the number and the direction along with the surrounding environment, has higher environmental adaptability and lower cost, and is easy to manage and update.
In one embodiment of the present invention, each of the second power management modules 21 includes a second transforming and stabilizing unit 211 and a second large-capacity storage battery 212, wherein the second transforming and stabilizing unit 211 is configured to transform and stabilize the ac voltage input by the power supply line, and output a stable dc voltage available for the second process execution module 23 to supply power thereto. The second large-capacity storage battery 212 is charged and stored by the second voltage transforming and stabilizing unit 211, so that power is continuously supplied to the bidirectional evacuation indicator and the direction and position determination device 22 when power is cut off or a line is damaged, the system can be ensured to continuously operate, and evacuation guidance can be effectively performed.
The second power management module 21 is an AC-DC voltage transformation and stabilization chip.
Further, the storage capacity of the second large-capacity storage battery meets the lighting time required by relevant standard specifications under the full-power load of the bidirectional evacuation indicator lamp.
The direction and position determination device 22 includes a direction determination unit and a position determination unit, and is used for determining the existing installation direction of the bidirectional evacuation indicator lamp and the relative position in the whole scene, and transmitting the direction and position information to the second central processor 232.
In one embodiment of the present invention, the direction determination unit is a micro magnetic field measurement device, such as a micro electronic compass or a micro magnetic field sensor, or others, which may be embedded in the bidirectional evacuation indicator light, and determines the current direction state of the bidirectional evacuation indicator light according to geomagnetic information.
In one embodiment of the present invention, the location determination unit employs an electronic device unit capable of positioning based on visible light signals, such as a lighting lamp group controller with timing function, and the location determination unit can obtain the spatial relative location of itself by controlling the time interval of its own lighting, the lighting wavelength, and the optical communication with the POE emergency light and other bidirectional evacuation indicator lights, using any proposed algorithm.
In one embodiment of the present invention, each of the second processing executing modules 23 includes a light receiving device 231, a second central processing unit 232, a second signal converting module 233 and a second light emitting device 234, and is configured to receive visible light information including evacuation guidance information sent by a POE emergency light, determine an indication direction according to a position and an orientation of the POE emergency light, convert the signal into a visible light signal, and send the visible light signal to a next-stage bidirectional indicator light through the second light emitting device 234.
In one embodiment of the present invention, the light receiving device 231 uses a photosensitive sensor as a signal receiver for receiving the evacuation guidance information light signal, converting it into an electrical signal, and transmitting it to the second central processing unit 232.
In one embodiment of the present invention, the second central processing unit 232 is configured to receive the evacuation guiding information input by the light receiving device 231 and the direction and position information input by the direction and position determining device 22, process the information, determine the indication direction of the second central processing unit, and transmit the indication direction information to the second signal conversion module 233.
In one embodiment of the present invention, the second signal conversion module 233 is configured to receive the evacuation guiding information transmitted from the second central processing unit 232, decode the network signal and convert the network signal into a control signal for controlling the LED lamp to flash, and transmit the control signal to the second light emitting device 234.
In one embodiment of the present invention, the second light emitting device 234 is configured to control the light emitting portion in the indication direction according to the indication direction information transmitted by the second central processing unit 232, and enable the light emitting portion in the indication direction to generate a high-speed bright and dark flashing light signal that is difficult to be detected by human eyes according to the control signal transmitted by the second signal conversion module 233, so as to implement transmission of the evacuation guidance information transmission information.
The light emitting portion of the second light emitting device 234 is an LED lamp group.
The invention provides an intelligent evacuation guidance system, which utilizes common emergency lamps and evacuation indicator lamps in buildings, adopts a visible light communication mode, transmits evacuation guidance information to each bidirectional evacuation indicator lamp by multi-hop visible light signals through POE emergency lamps, is not influenced by power failure and network disconnection and terminal damage, and has higher robustness. The POE emergency light of system adopts the POE circuit, the electric energy is unified with signal transmission, the wiring cost has been practiced thrift, two-way evacuation pilot lamp only needs the direct power supply of on-the-spot power supply cable, need not the net twine, it is convenient to lay wire, can be along with the nimble mounted position that changes of all ring edge borders, quantity and direction, and be difficult for the conflagration that the accident caused, influence such as explosion, higher environmental suitability and lower cost have, easily management updates, can provide reliable evacuation guide information for personnel in the peripheral building when the occurence of failure, shorten evacuation time, reduce the loss of accidents.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. An intelligent evacuation guidance system based on visible light communication is characterized by comprising a POE emergency lamp system and a bidirectional evacuation indicator lamp system,
the POE emergency lamp system comprises a plurality of POE emergency lamps (1), the POE emergency lamps (1) are arranged at an entrance and an exit of a building and used for receiving evacuation guide information, providing illumination according to the evacuation guide information and transmitting visible light signals to the bidirectional evacuation indicator lamp system (2);
two-way sparse pilot lamp system (2) are including a plurality of two-way sparse pilot lamp (2), and are a plurality of two-way sparse pilot lamp (2) all set up on building structure, and are a plurality of two-way sparse pilot lamp (2) inside can send evacuation guide information with visible light signal's mode each other, and is a plurality of two-way sparse pilot lamp (2) still are used for receiving the evacuation guide information visible light signal that POE emergency light (1) sent, and are a plurality of two-way sparse pilot lamp (2) send evacuation guide information with the visible light form according to the information of receiving and the direction of instruction of self and position adjustment self according to instruction direction information.
2. The intelligent evacuation guidance system based on visible light communication of claim 1, wherein each POE emergency lamp comprises a first processing execution module (12) and a first power management module (11) for supplying power to the first processing execution module (12), and the first processing execution module (12) is configured to receive and process the evacuation guidance information, convert the evacuation guidance information into a visible light signal, and send the visible light signal to the bidirectional evacuation guidance lamp system (2).
3. The intelligent evacuation guidance system based on visible light communication of claim 2, wherein each first power management module (11) comprises a first transforming and voltage stabilizing unit (111), and the first transforming and voltage stabilizing unit (111) is configured to transform and stabilize a dc voltage input by a POE power supply line, and output the dc voltage to power the first processing execution module (12).
4. An intelligent evacuation guide system based on visible light communication according to claim 3, wherein the first power management module (11) further comprises a first battery unit (112), and the first battery unit (112) is connected with the first voltage transformation and stabilization unit (111).
5. An intelligent evacuation guidance system based on visible light communication according to any one of claims 2-4, the intelligent evacuation system is characterized in that each first processing execution module (12) comprises a first central processing unit (121), a first signal conversion module (122) and a first light emitting module (124) which are connected in sequence, the first central processing unit (121) is used for receiving evacuation guide information input by a POE line and transmitting the processed information to the first signal conversion module (122), the first signal conversion module (122) is used for receiving the information transmitted by the first central processing unit (121) and converting the information into a control signal for controlling the first light emitting module (124) to emit light and flicker, and the first light emitting module (124) is used for receiving the control signal transmitted by the first signal conversion module (122) and transmitting a visible light signal according to the control signal.
6. An intelligent evacuation guidance system based on visible light communication according to claim 1, wherein each bidirectional evacuation indicator lamp (2) comprises a direction and position determination device (22), a second processing execution module (23) and a second power management module (21) for supplying power, the direction and position determination device (22) is used for determining the installation direction and position of the bidirectional evacuation indicator lamp and transmitting the direction information and the position information to the second processing execution module (23), and the second processing execution module (23) is used for receiving a visible light signal containing evacuation guide information and the direction information and the position information, adjusting the indication direction of the second processing execution module and sending the evacuation guide information in the form of visible light according to the indication direction information.
7. An intelligent evacuation guidance system based on visible light communication according to claim 6, characterized in that each direction and position discrimination device (22) comprises a direction discrimination unit for discriminating direction and a position discrimination unit for discriminating the position.
8. An intelligent evacuation guidance system based on visible light communication according to claim 6, wherein each second power management module (21) comprises a second voltage transforming and stabilizing unit (211), and the second voltage transforming and stabilizing unit (211) is used for outputting a direct current voltage to the second process execution module (23).
9. An intelligent evacuation guide system based on visible light communication according to claim 8, wherein each second power management module (21) further comprises a second large capacity battery (212), and the second large capacity battery (212) is electrically connected to the second voltage transforming and stabilizing unit (211).
10. An intelligent evacuation guidance system based on visible light communication according to any one of claims 6-9, wherein each second processing execution module (23) comprises a light receiving device (231), a second central processing unit (232), a second signal conversion module (233) and a second light reflection device (234) connected in sequence, the light receiving device (231) is configured to receive a visible light signal for transmitting evacuation guidance information and convert the visible light signal into an electrical signal to be transmitted to the second central processing unit (232), the second central processing unit (232) is configured to receive and process the electrical signal sent by the light receiving device (231) and the direction information and the position information sent by the direction and position determination device (22), determine the indication direction of the second central processing unit (231), and transmit the indication direction information to the second light reflection device (234), the second signal conversion module (233), and the second signal conversion module (233) is configured to receive the indication direction information transmitted by the second central processing unit (232) And converts the signal into a control signal and transmits the control signal to the second light emitting device (234), and the second light emitting device (234) receives the control signal and emits a light signal according to the control signal to guide evacuation.
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| CN202110350658.5A CN113112720A (en) | 2021-03-31 | 2021-03-31 | Intelligent evacuation guidance system based on visible light communication |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113992269A (en) * | 2021-10-28 | 2022-01-28 | 华南理工大学 | Visible light communication LED drive modulation system based on bluetooth regulation and control |
| CN115497238A (en) * | 2022-06-20 | 2022-12-20 | 中国矿业大学 | Passive positioning and evacuation guiding method and system based on Wi-Fi probe |
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2021
- 2021-03-31 CN CN202110350658.5A patent/CN113112720A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113992269A (en) * | 2021-10-28 | 2022-01-28 | 华南理工大学 | Visible light communication LED drive modulation system based on bluetooth regulation and control |
| CN115497238A (en) * | 2022-06-20 | 2022-12-20 | 中国矿业大学 | Passive positioning and evacuation guiding method and system based on Wi-Fi probe |
| CN115497238B (en) * | 2022-06-20 | 2023-09-01 | 中国矿业大学 | Wi-Fi probe-based passive positioning and evacuation guiding method and system |
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