Positioning method based on Bluetooth fire detector

Abstract

The invention discloses a positioning method based on a Bluetooth fire detector, and the method comprises the steps: arranging a Bluetooth communication module in the fire detector, enabling the fire detectors in a building to be in communication connection with one another to form a Bluetooth detection network, and carrying out the Bluetooth communication with a user-side intelligent device, the fire detectors store and record nearby user side intelligent equipment information, and the fire extinguishing system control host receives detector equipment code information of each fire detector and user side equipment code information stored in a storage module in the corresponding fire detector. The cloud server receives detector equipment code information of each fire detector in the fire-fighting fire alarm system and user-side equipment code information stored in a storage module in the corresponding fire detector, so that the detector equipment code information is associated with the user-side equipment code information. Therefore, the personnel can be positioned in the map in the building.

Description

[Technical field]

[0001] The invention relates to the field of positioning, and in particular to a positioning method based on a Bluetooth fire detector. [Background Technology]

[0002] Traditional automatic fire alarm systems usually consist of a fire control center host and induction detectors distributed in the building. The fire command center host and the induction detectors are connected by wiring. The fire detector is usually equipped with a temperature sensor or a smoke sensor. When a fire occurs, the induction detector sends a fire information electrical signal to the fire control center host through the line. After seeing the information, the duty personnel in the duty room activate the sound and light alarm to notify the people in the building to evacuate. This fire alarm system cannot help fire rescue personnel understand the specific number and location of trapped people in the building in the first time, and there are great difficulties in carrying out fire fighting and rescue work. There are few information-based means for fire detection. During the fire fighting and rescue process, fire rescue personnel also lack the guarantee of indoor positioning field when entering the interior of the building. When encountering danger, the rear command center cannot immediately determine important information such as the number and location of people in distress in front. [Summary of the invention]

[0003] The present invention overcomes the shortcomings of the prior art and provides a positioning method based on a Bluetooth fire detector that can calculate the position of trapped persons in a building.

[0004] To achieve the above object, the present invention adopts the following technical solutions:

[0005] A positioning method based on Bluetooth fire detectors, characterized in that: it includes a fire alarm system, a user-end smart device and a cloud server arranged in a building, the fire alarm system includes a fire system control host connected to the cloud server for communication, and a plurality of fire detectors distributed on each floor of the building, the fire detector is provided with a Bluetooth communication module and a storage module for storing a user-end device code, the Bluetooth communication modules of each fire detector form a Bluetooth detection network connected to the fire system control host for communication, and the positioning method includes

[0006] S1. The Bluetooth communication module of each fire detector sends the detector broadcast information regularly, and the detector broadcast information includes the detector device code;

[0007] S2. After receiving the detector broadcast information, the user-end smart device feeds back the user-end device broadcast information to the corresponding fire detector according to the detector device code. The user-end device broadcast information includes the user-end device code.

[0008] S3, after the fire detector receives the broadcast information of the user terminal device, the fire detector compares the received user terminal device code with the user terminal device code in the storage module, and stores the first appearing user terminal device code and the appearance time in the storage module in the form of chain and cyclic overwriting;

[0009] S4, the fire protection system control host receives the detector device code information of each fire detector and the user terminal device code information stored in the storage module of the corresponding fire detector;

[0010] S5. The fire protection system control host sends the detector device code information of each fire detector in the fire alarm system and the user terminal device code information stored in the storage module of the corresponding fire detector to the cloud server, so as to associate the detector device code information with the user terminal device code information to realize personnel positioning.

[0011] The positioning method based on Bluetooth fire detectors as described above is characterized in that: in S1, when a disaster occurs, the detector broadcast information sent by the Bluetooth communication module of each fire detector includes a disaster code;

[0012] In S2, after the user-side smart device receives the detector broadcast information containing the disaster code, the user-side smart device displays whether to send a help message;

[0013] When it is selected not to send, the user-side smart device feeds back the user-side device broadcast information to the corresponding fire detector according to the detector device code;

[0014] When the sending is confirmed or not confirmed within a timeout period, the user-side smart device feeds back the user-side device broadcast information to the corresponding fire detector according to the detector device code, and the user-side device broadcast information includes help information;

[0015] In S3, after the fire detector receives the broadcast information of the user terminal device containing the help information, the fire detector marks the user terminal device code and stores it at the beginning of the storage module without being overwritten.

[0016] A positioning method based on Bluetooth fire detectors as described above is characterized in that: in S5, the cloud server presets the internal map of the building and the distribution information of each fire detector in the internal map of the building, and the cloud server then calculates the escape route based on the detector device code of the fire detector that stores the help information, and sends the calculated escape route to the user-end smart device corresponding to the user-end device code requesting help.

[0017] A positioning method based on a Bluetooth fire detector as described above is characterized in that: it also includes a command end control device that can be connected to a cloud server, a fire protection system control host, and a Bluetooth detection network communication;

[0018] The command-end control device is preset with a map of the interior of the building and the distribution information of each fire detector in the map of the interior of the building. The command-end control device can read the detector device code information of each fire detector through cloud server communication, fire system control host or Bluetooth detection network, as well as the user-end device code information stored in the storage module in the corresponding fire detector, so as to locate the position of people in the building and screen out the list of user device code information to be rescued.

[0019] A positioning method based on Bluetooth fire detectors as described above is characterized in that: after the user-end smart device moves outdoors, the user-end smart device sends security information to the cloud server, and the security information includes the user-end device code; the command-end control device deletes the corresponding user device code information in the list of user device code information to be rescued according to the security information received by the cloud server, and deletes the corresponding user device code information in the storage module of each fire detector.

[0020] A positioning method based on Bluetooth fire detectors as described above is characterized in that: it also includes a rescue end smart device that can communicate with a cloud server, a Bluetooth detection network, and a command end control device, and the rescue end smart device is preset with an internal map of the building and distribution information of each fire detector in the internal map of the building;

[0021] The smart device at the rescue end sends query broadcast information via Bluetooth;

[0022] After receiving the query broadcast information, the Bluetooth communication module of the nearby fire detector feeds back the user terminal device code information stored in the storage module of the fire detector, and at the same time sends a query broadcast information whether to request rescue;

[0023] After receiving the rescue inquiry broadcast information, the user terminal device displays whether to send a rescue request information;

[0024] When not sending is selected, the user-side smart device does not send a request for help message; when sending is confirmed, the user-side smart device feeds back a request for help message to the corresponding fire detector according to the detector device code, and the fire detector feeds back its detector device code to the rescue-side smart device;

[0025] The intelligent device at the rescue end locates the person requesting rescue based on the detector device code, the internal map of the building, and the distribution information of each fire detector on the internal map of the building, and displays the navigation.

[0026] A positioning method based on Bluetooth fire detectors as described above is characterized in that: a rescue end smart device sends a distress message to a Bluetooth detection network, the distress message including a rescue end device code and a detector device code of a nearby fire detector;

[0027] The nearby fire detectors of the Bluetooth detection network store the rescue end device code in the memory and send it to the command end control device through the Bluetooth detection network;

[0028] After receiving the distress information, the command control device sends rescue information to the rescue smart device that is not in distress. The rescue information includes the rescue device code and the detector device code. The rescue smart device displays the navigation after positioning.

[0029] A positioning method based on a Bluetooth fire detector as described above is characterized in that: a rescue end smart device sends a distress message to a cloud server, the distress message including a rescue end device code and a detector device code of a nearby fire detector;

[0030] The cloud server sends the distress information to the command-end control device, and the command-end control device sends the rescue information to the rescue-end smart device that is not in distress. The rescue information includes the rescue-end device code and the detector device code. The rescue-end smart device displays the navigation after positioning.

[0031] The positioning method based on Bluetooth fire detector as described above is characterized in that the intelligent device at the rescue end can actively trigger the sending of distress information.

[0032] A positioning method based on a Bluetooth fire detector as described above is characterized in that: the intelligent device at the rescue end has a satellite positioning function, and when the intelligent device at the rescue end stays at a preset time at a fixed point, the intelligent device at the rescue end asks whether to send a distress message;

[0033] When Cancel is selected, no distress message is sent; when Send is selected or timeout is not triggered, a distress message is sent.

[0034] The beneficial effects of the present invention are:

[0035] The present invention sets a Bluetooth communication module in the fire detector, and enables the various fire detectors in the building to communicate and connect to form a Bluetooth detection network. Through Bluetooth communication with the user-end smart device, the fire detector stores and records the information of the nearby user-end smart devices, and associates the detector device code information with the user-end device code information, thereby realizing the location of personnel in the internal map of the building. [Drawings]

[0036] Figure 1 To invent a schematic diagram of positioning within a building. [Specific implementation method]

[0037] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings.

[0038] It should be noted that all directional indications (such as up, down, left, right, front, back...) in the embodiments of the present invention are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly. In addition, the descriptions of "preferred", "sub-preferred", etc. in the present invention are only used for descriptive purposes, and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of indicated technical features. Therefore, the features defined as "preferred" or "sub-preferred" may explicitly or implicitly include at least one such feature.

[0039] like Figure 1 As shown, a positioning method based on Bluetooth fire detectors includes a fire alarm system, a user-side smart device and a cloud server arranged in a building. The fire alarm system includes a fire system control host connected to the cloud server for communication, and a plurality of fire detectors distributed on each floor of the building, and each fire detector is preset with a detector device code; a Bluetooth communication module and a storage module for storing the user-side device code are provided in the fire detector, and a Bluetooth detection network composed of the Bluetooth communication modules of each fire detector is connected to the fire system control host for communication. Among them, the Bluetooth communication modules of each fire detector can form a Bluetooth detection network through wired or wireless communication, and the Bluetooth detection network can also be connected to the fire system control host through wired or wireless communication. At the same time, each fire detector has its own backup battery, which can keep working in a power-off state, so that the Bluetooth detection network keeps working. The positioning method includes:

[0040] S1. Each fire detector in the building sends detector broadcast information regularly through the Bluetooth communication module. The detector broadcast information includes the detector device code, ambient temperature value, detector power and other information;

[0041] S2. After receiving the detector broadcast information, the user-end smart device in the building feeds back the user-end device broadcast information to the corresponding fire detector according to the detector device code. The user-end device broadcast information includes the user-end device code, the user-end device power level and other information;

[0042] S3, after the fire detector receives the broadcast information of the user terminal device, the fire detector compares the received user terminal device code with the user terminal device code in the storage module, and stores the first appearing user terminal device code and the appearance time in the storage module in the form of chain and cyclic overwriting;

[0043] Specifically, when the fire detector compares the storage module and the user terminal device code is already stored, the fire detector does not make any record changes; when the user terminal device code is not stored in the comparison storage module, the first appearing user terminal device code and the appearance time information are stored in the storage record sequence of the storage module in a chain form. When the storage module is full of storage records, the storage record sequence is overwritten one by one from the beginning to ensure that the user terminal device code of the on-site user is stored.

[0044] S4, the fire protection system control host receives the detector device code information of each fire detector and the user terminal device code information stored in the storage module of the corresponding fire detector;

[0045] S5. The fire protection system control host sends the detector device code information of each fire detector in the fire alarm system and the user terminal device code information stored in the storage module of the corresponding fire detector to the cloud server, so as to associate the detector device code information with the user terminal device code information to realize personnel positioning.

[0046] Specifically, the cloud server is preset with a map of the interior of the building and the distribution information of each fire detector in the map of the interior of the building. The specific location of each fire detector corresponding to the detector device code in the map of the interior of the building can be known through the detector device code information. Therefore, by associating the user terminal device code information with the detector device code information, the user's position can be located. Furthermore, by knowing the location of the fire detector that records the user terminal device code information with the latest first appearance time, the final location of the user inside the building can be known; the user's movement route inside the building can also be known based on the appearance time of the user terminal device code information, and the user's movement direction can be determined.

[0047] In this case, when a disaster such as a fire occurs, the detector broadcast information sent by the Bluetooth communication module of each fire detector also includes a disaster code; after the user-side smart device receives the detector broadcast information containing the disaster code, it triggers the user-side smart device to display whether to send a help message, so that the user can choose whether to trigger help based on their own environmental conditions.

[0048] Specifically, when the user triggers and selects not to send a help message, the user-side smart device feeds back the user-side device broadcast information to the corresponding fire detector according to the detector device code, and the fire detector stores the first appearing user-side device code and the time of appearance in a chain and cyclic overwrite form. When the sending of the help message is confirmed or timed out without confirmation, the user-side smart device feeds back the user-side device broadcast information to the corresponding fire detector according to the detector device code, and the user-side device broadcast information contains the help message. After the fire detector receives the user-side device broadcast information containing the help message, the fire detector marks the user-side device code and stores it at the beginning of the storage module and it is not overwritten, so as to ensure that the user-side device code of the user who is asking for help is displayed first and is not overwritten. Among them, when multiple user-side device codes for help appear, they are stored one by one in the storage module in a chain form starting from the beginning in chronological order.

[0049] In this case, the cloud server is preset with the internal map of the building and the distribution information of each fire detector in the internal map of the building. The cloud server then calculates the escape route based on the detector device code of the fire detector that stores the help information, and sends the calculated escape route to the user-end smart device corresponding to the user-end device code that requested help.

[0050] Specifically, when a disaster such as a fire occurs, after the fire detector receives the help message, it will store the corresponding user-end device code mark in the storage module, and send the associated user-end device code information and the detector device code information to the cloud server through the fire protection system control host; the cloud server then locates the user's position in the building based on the associated information, the internal map of the building, and the distribution information of each fire detector in the internal map of the building, and calculates the escape route, and then sends the escape route to the corresponding user-end smart device of the user-end device code that requested help, to help the user seeking help escape and save himself.

[0051] In this case, it also includes a command-end control device that can communicate with a cloud server, a fire system control host, and a Bluetooth detection network communication connection; the command-end control device is preset with a map of the interior of the building and the distribution information of each fire detector in the map of the interior of the building. The command-end control device can read the detector device code information of each fire detector through cloud server communication, a fire system control host or a Bluetooth detection network, as well as the user-end device code information stored in the storage module in the corresponding fire detector, so as to locate the position of people in the building and screen out a list of user device code information to be rescued.

[0052] Specifically, during the disaster rescue process, the rescue commander can make the command end control device communicate with the cloud server, the fire system control host or the Bluetooth detection network according to different on-site situations to obtain the association information between each detector device code and the corresponding user terminal device code in the fire alarm system of the building. For example, when the mobile communication network is normal, the command end control device can be connected to the cloud server through the mobile communication network to obtain the association information; when the mobile communication network cannot work, the command end control device can be connected to the fire system control host to obtain the association information; when the mobile communication network cannot work and the fire system control host is damaged, the command end control device can be wirelessly connected to the Bluetooth communication module of one of the fire detectors on the scene, so as to communicate with the entire Bluetooth detection network to obtain the association information. After obtaining the association information, the command end control device locates the position of the personnel in the building according to the acquired association information, the internal map of the building and the distribution information of each fire detector in the internal map of the building, and selects the list of user device code information to be rescued, so as to quickly formulate a rescue plan, improve the rescue efficiency and reduce the danger of the rescue personnel. Among them, in formulating the rescue plan, priority can be given to rescuing users whose user terminal equipment codes are marked by the fire detector as those in need of help, so as to facilitate the rescue personnel to allocate tasks.

[0053] Furthermore, after the user-end smart device moves outdoors, the user-end smart device can send safety information to the cloud server, and the safety information includes the user-end device code, or the user who escapes to the outdoors manually notifies that he has escaped; at this time, the command-end control device deletes the corresponding user device code information in the list of user device code information to be rescued, and deletes the corresponding user device code information in the storage module of each fire detector based on the safety information received by the cloud server and the user-end device code information manually notified, so as to quickly and accurately confirm the specific number of users to be rescued in the building and the corresponding positioning positions, thereby improving rescue efficiency and reducing the danger of rescue personnel.

[0054] In this case, there is also a rescue-end smart device that can communicate with the cloud server, Bluetooth detection network, and command-end control equipment. The rescue-end smart device is pre-installed with a map of the interior of the building and the distribution information of each fire detector in the map of the interior of the building.

[0055] Specifically, rescue personnel entering the scene can connect the rescue-end smart device to the cloud server, Bluetooth detection network or command-end control device according to different on-site conditions, and obtain relevant information in different ways, making it easier to formulate rescue plans in real time based on the on-site environment inside the building. Generally, the rescue-end smart device is wirelessly connected to the Bluetooth communication module of one of the fire detectors on site, thereby communicating with the Bluetooth detection network, and then the rescue-end smart device sends a query broadcast message to the fire detector via Bluetooth; after receiving the query broadcast message, the Bluetooth communication module of the nearby fire detector feeds back the user-end device code information stored in the storage module of the fire detector, and at the same time, each fire detector of the Bluetooth detection network sends a query broadcast message to request rescue with full network coverage; when the nearby user-end device receives the rescue query broadcast message, it displays whether to send a request for rescue message; when the user chooses not to send a help message, the user-end smart device does not send a request for rescue message; when the user confirms to send a help message, the user-end smart device feeds back the help message to the corresponding fire detector according to the detector device code, and at the same time, the fire detector feeds back its detector device code to the rescue-end smart device through the Bluetooth detection network; the rescue-end smart device locates the person requesting rescue according to the detector device code, the internal map of the building, and the distribution information of each fire detector on the internal map of the building, and displays the navigation route on the rescue-end smart device. On the other hand, the intelligent device at the rescue end can also obtain relevant information and rescue plan information by communicating with the cloud server or the command-end control device, generate navigation routes based on the rescue plan information, and communicate with the commander in real time to optimize the rescue plan.

[0056] In this case, since the disaster site environment is often uncertain, rescue workers may be obstructed and in distress. At this time, the rescue workers can send distress information to the cloud server, Bluetooth detection network and command control equipment through the rescue-end smart device. The distress information includes the rescue-end device code and the detector device code of the nearby fire detector.

[0057] Specifically, after the rescue-end smart device sends a distress message to the Bluetooth detection network, the nearby fire detectors in the Bluetooth detection network store the rescue-end device code in the memory and send it to the command-end control device through the Bluetooth detection network; after the command-end control device receives the distress message, it sends a rescue message to the rescue-end smart device that is not in distress, and the rescue message includes the rescue-end device code and the detector device code. The rescue-end smart device locates the rescue personnel in distress and displays the navigation route.

[0058] After the rescue-end smart device sends a distress message to the cloud server, the distress message includes the rescue-end device code and the detector device code of the nearby fire detector; the cloud server sends the distress message to the command-end control device, and the command-end control device sends a rescue message to the rescue-end smart device that is not in distress, and the rescue-end smart device locates the rescue personnel in distress and displays the navigation route.

[0059] After the rescue-end smart device sends distress information to the command-end control device, the command-end control device sends rescue information to the rescue-end smart device that is not in distress. The rescue information includes the rescue-end device code and the detector device code. The rescue-end smart device locates the rescue personnel in distress and displays the navigation route.

[0060] At the same time, after the rescue-end smart device sends a distress message to the Bluetooth detection network, the nearby fire detectors store the rescue-end device code in the memory. At this time, the rescue-end smart device acts as a user-end smart device, and the rescuers are also classified as people seeking help, so that other rescuers who are not in distress can perform rescue by searching and rescuing users seeking help.

[0061] Furthermore, the intelligent device at the rescue end can actively trigger the sending of distress information, that is, when the rescue personnel encounter an obstructed or distressed situation, the intelligent device at the rescue end can actively trigger the sending of distress information.

[0062] At the same time, the intelligent device at the rescue end has a satellite positioning function. Therefore, when the rescue end intelligent device stays at a preset time at a fixed point, the intelligent device at the rescue end asks the rescue personnel whether to send a distress message. When cancel is selected, the distress message will not be sent; when sending is selected or it is not triggered by timeout, the distress message will be sent, realizing passive triggering of sending distress messages and improving the life safety of rescue personnel during the rescue process.

[0063] In this case, since the Bluetooth detection network in the building is composed of multiple fire detectors, it is necessary to perform maintenance and inspection on each fire detector regularly. During the maintenance and inspection, the fire maintenance personnel send maintenance query information to the nearby fire detectors through the maintenance end smart device. After receiving the maintenance query information, the fire detector feedbacks the fire detector equipment code, power and fault code and other information. Then the fire maintenance personnel send self-test code information to the fire detector through the maintenance end smart device. After receiving the self-test code information, the fire detector starts the self-test program, flashes the warning light and performs alarm tests. After confirming that the sound and light alarm is working properly, the fire maintenance personnel send a stop code information to the fire detector to stop the self-test of the fire detector; then the fire maintenance personnel use a smoke generator to approach the fire detector to check whether the fire detector automatically detects and starts the sound and light alarm and whether the detected smoke detection signal is sent to the cloud server. After confirming that the above smoke trigger check is correct, stop the smoke generator to stop the fire detector from alarming. After checking that the fire detector is working properly, the fire maintenance personnel send confirmation information that the fire detector is working properly to the cloud server through the maintenance end smart device, thus completing the inspection and maintenance of the fire detector.

[0064] The above are only preferred embodiments of the present invention, and are not intended to limit the patent scope of the present invention. All equivalent structural changes made using the contents of the present invention's specification and drawings under the inventive concept of the present invention, or directly or indirectly applied in other related technical fields, are included in the patent protection scope of the present invention.

Claims

1. A positioning method based on Bluetooth fire detector, characterized in that: The invention comprises a fire alarm system, a user-end smart device and a cloud server arranged in a building. The fire alarm system comprises a fire system control host connected to the cloud server in communication, and a plurality of fire detectors distributed on each floor of the building. The fire detector is provided with a Bluetooth communication module and a storage module for storing the user-end device code. The Bluetooth communication modules of each fire detector form a Bluetooth detection network connected to the fire system control host in communication. The positioning method comprises: S1. The Bluetooth communication module of each fire detector sends the detector broadcast information regularly, and the detector broadcast information includes the detector device code; S2. After receiving the detector broadcast information, the user-end smart device feeds back the user-end device broadcast information to the corresponding fire detector according to the detector device code. The user-end device broadcast information includes the user-end device code. S3, after the fire detector receives the broadcast information of the user terminal device, the fire detector compares the received user terminal device code with the user terminal device code in the storage module, and stores the first appearing user terminal device code and the appearance time in the storage module in the form of chain and cyclic overwriting; S4, the fire protection system control host receives the detector device code information of each fire detector and the user terminal device code information stored in the storage module of the corresponding fire detector; S5. The fire protection system control host sends the detector device code information of each fire detector in the fire alarm system and the user terminal device code information stored in the storage module of the corresponding fire detector to the cloud server, so as to associate the detector device code information with the user terminal device code information to realize personnel positioning.

2. A positioning method based on Bluetooth fire detector according to claim 1, characterized in that: In S1, when a disaster occurs, the detector broadcast information sent by the Bluetooth communication module of each fire detector includes a disaster code; In S2, after the user-side smart device receives the detector broadcast information containing the disaster code, the user-side smart device displays whether to send a help message; When it is selected not to send, the user-side smart device feeds back the user-side device broadcast information to the corresponding fire detector according to the detector device code; When the sending is confirmed or not confirmed within a timeout period, the user-side smart device feeds back the user-side device broadcast information to the corresponding fire detector according to the detector device code, and the user-side device broadcast information includes help information; In S3, after the fire detector receives the broadcast information of the user terminal device containing the help information, the fire detector marks the user terminal device code and stores it at the beginning of the storage module without being overwritten.

3. A positioning method based on Bluetooth fire detector according to claim 2, characterized in that: In S5, the cloud server is preset with the internal map of the building and the distribution information of each fire detector in the internal map of the building. The cloud server then calculates the escape route based on the detector device code of the fire detector that stores the help information, and sends the calculated escape route to the user-end smart device corresponding to the user-end device code requesting help.

4. A positioning method based on Bluetooth fire detector according to claim 2, characterized in that: It also includes a command-end control device that can communicate with a cloud server, a fire system control host, and a Bluetooth detection network; The command-end control device is preset with a map of the interior of the building and the distribution information of each fire detector in the map of the interior of the building. The command-end control device can read the detector device code information of each fire detector through cloud server communication, fire system control host or Bluetooth detection network, as well as the user-end device code information stored in the storage module in the corresponding fire detector, so as to locate the position of people in the building and screen out the list of user device code information to be rescued.

5. A positioning method based on Bluetooth fire detector according to claim 4, characterized in that: After the user-end smart device moves outdoors, the user-end smart device sends security information to the cloud server, and the security information includes the user-end device code; the command-end control device deletes the corresponding user device code information in the list of user device code information to be rescued according to the security information received by the cloud server, and deletes the corresponding user device code information in the storage module of each fire detector.

6. A positioning method based on Bluetooth fire detector according to claim 4, characterized in that: It also includes a rescue-end smart device that can communicate with a cloud server, a Bluetooth detection network, and a command-end control device. The rescue-end smart device is preset with a map of the interior of the building and the distribution information of each fire detector in the map of the interior of the building; The smart device at the rescue end sends query broadcast information via Bluetooth; After receiving the query broadcast information, the Bluetooth communication module of the nearby fire detector feeds back the user terminal device code information stored in the storage module of the fire detector, and at the same time sends a query broadcast information whether to request rescue; After receiving the rescue inquiry broadcast information, the user terminal device displays whether to send a rescue request information; When not sending is selected, the user-side smart device does not send a request for help message; when sending is confirmed, the user-side smart device feeds back a request for help message to the corresponding fire detector according to the detector device code, and the fire detector feeds back its detector device code to the rescue-side smart device; The intelligent device at the rescue end locates the person requesting rescue based on the detector device code, the internal map of the building, and the distribution information of each fire detector on the internal map of the building, and displays the navigation.

7. A positioning method based on Bluetooth fire detector according to claim 6, characterized in that: The rescue end smart device sends a distress message to the Bluetooth detection network, and the distress message includes the rescue end device code and the detector device code of the nearby fire detector; The nearby fire detectors of the Bluetooth detection network store the rescue end device code in the memory and send it to the command end control device through the Bluetooth detection network; After receiving the distress information, the command control device sends rescue information to the rescue smart device that is not in distress. The rescue information includes the rescue device code and the detector device code. The rescue smart device displays the navigation after positioning.

8. A positioning method based on Bluetooth fire detector according to claim 6, characterized in that: The rescue end smart device sends a distress message to the cloud server, and the distress message includes a rescue end device code and a detector device code of a nearby fire detector; The cloud server sends the distress information to the command-end control device, and the command-end control device sends the rescue information to the rescue-end smart device that is not in distress. The rescue information includes the rescue-end device code and the detector device code. The rescue-end smart device displays the navigation after positioning.

9. A positioning method based on Bluetooth fire detector according to claim 7 or 8, characterized in that: Smart devices at the rescue end can actively trigger the sending of distress information.

10. A positioning method based on Bluetooth fire detector according to claim 7 or 8, characterized in that: The rescue end smart device has a satellite positioning function. When the rescue end smart device stays at a fixed point for a preset time, the rescue end smart device asks whether to send a distress message; When Cancel is selected, no distress message is sent; when Send is selected or timeout is not triggered, a distress message is sent.

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