Intelligent fireproof monitoring terminal and multi-sensor fusion system

Abstract

The utility model discloses an intelligent fireproof monitoring terminal and multi-sensor fusion system, which belongs to the technical field of biomass gasification stock ground safety monitoring equipment and comprises a columnar supporting bracket, a monitoring box body arranged at the top of the bracket, an alarm device, a control module, a power supply module and vibration type temperature measuring cables distributed in a stock ground, a sensor module is mounted on the monitoring box body and comprises a dual-band infrared detector, a smoke particle sensor, a wind speed and direction sensor, a high-definition camera and a GPS (Global Positioning System) module; the vibration type temperature measuring cable comprises an armored stainless steel sheath, a vibration optical fiber and a platinum resistor temperature measuring element, wherein the vibration optical fiber and the platinum resistor temperature measuring element are contained in the sheath. The vibration type temperature measuring cable is laid on the surface of the raw material pile in a grid shape and is connected with the monitoring box body through a waterproof connector. According to the utility model, the problems of single monitoring, response lag, lack of visual monitoring and positioning functions and difficulty in deployment in the prior art can be solved, and multi-dimensional monitoring, accurate positioning and visual monitoring are realized.

Description

Technical Field

[0001] This utility model relates to the technical field of safety monitoring equipment for biomass gasification sites, specifically to an intelligent fire monitoring terminal and a multi-sensor fusion system. Background Technology

[0002] In the management of biomass gasification feedstocks, spontaneous combustion of raw materials and fire hazards are major safety concerns. Traditional monitoring methods have the following shortcomings:

[0003] 1. A single sensor (such as a thermocouple) can only detect local temperature and cannot identify infrared radiation anomalies in the early smoldering stage;

[0004] 2. Standalone smoke detectors have a delayed response and are susceptible to dust interference, leading to false alarms;

[0005] 3. Manual inspections are inefficient and difficult to cover large areas of material yards;

[0006] 4. Existing equipment relies on mains power, resulting in high deployment costs in remote material yards;

[0007] 5. The lack of intuitive on-site video monitoring makes it difficult for managers to grasp the actual situation of the material yard in a timely manner;

[0008] 6. Unclear equipment location information makes it difficult to locate and repair equipment in a timely manner when malfunctions or abnormalities occur.

[0009] There is an urgent need for an intelligent fire monitoring device that can integrate multi-dimensional data such as temperature, infrared radiation, and smoke in real time, has video monitoring and precise positioning functions, and is adaptable to the field environment. Utility Model Content

[0010] The technical objective of this utility model is to address the above-mentioned shortcomings by providing an intelligent fire monitoring terminal and a multi-sensor fusion system, which can solve the problems of single monitoring, delayed response, lack of visualization monitoring and positioning functions, and difficult deployment in the existing technology, and realize multi-dimensional monitoring, accurate positioning and visualization monitoring.

[0011] The technical solution adopted by this utility model to solve its technical problem is:

[0012] An intelligent fire monitoring terminal includes a columnar support bracket, a monitoring box mounted on top of the bracket, an alarm device, a control module, a power module, and vibration-type temperature measuring cables distributed throughout the material yard.

[0013] The monitoring box is equipped with sensor modules, which include a dual-band infrared detector, a smoke particle sensor, a wind speed and direction sensor, a high-definition camera, and a GPS module.

[0014] The vibration-type temperature measuring cable includes an armored stainless steel sheath and a vibration optical fiber and a platinum resistance temperature measuring element contained inside the sheath; the vibration-type temperature measuring cable is laid in a grid pattern on the surface of the raw material pile and connected to the monitoring box through a waterproof connector (IP68 rating); the vibration optical fiber detects mechanical vibration signals with a positioning accuracy of ±1m; the platinum resistance temperature measuring element (PT100, accuracy ±1℃).

[0015] The control module includes an edge computing unit and a 4G communication module. The dual-band infrared detector, smoke particle sensor, wind speed and direction sensor, high-definition camera, and GPS module are electrically connected to the edge computing unit. The vibration temperature measuring cable is connected to the edge computing unit via a bus to achieve communication. The edge computing unit is connected to an alarm device. The edge computing unit triggers an alarm based on preset thresholds (such as infrared temperature difference > 15℃, smoke concentration > 500ppm, temperature measuring cable temperature > 60℃, or abnormalities such as flames and smoke detected in the camera image). At the same time, the alarm information, real-time video image, and equipment location information are sent to the administrator's mobile phone via the 4G module (delay ≤ 30s). The administrator can remotely control the camera to rotate and view the situation in different areas of the material yard via the mobile phone.

[0016] Preferably, the dual-band infrared detector is a FLIR A310 infrared detector with a detection band of 3.2-4.8μm (high temperature band) and 8-14μm (normal temperature band), a field of view of 90°×75°, and an adjustable installation tilt angle (0-45°).

[0017] The smoke particle sensor is a Honeywell DF80 model smoke particle sensor, based on the principle of light scattering, with a detection particle size ≥0.01μm, a response time ≤10s, and is installed 10cm below the infrared detector;

[0018] The wind speed and direction sensor has a three-cup structure, a wind speed measurement range of 0-60m / s (accuracy ±0.1m / s), a wind direction resolution of 3°, and is installed on the top of the housing.

[0019] The high-definition camera: model can be Hikvision DS-2CD3T46WDV2-I3, 4 megapixels, supports infrared night vision (night vision distance 50 meters), has a wide-angle lens (field of view 110°), is installed on the top front of the monitoring box, and is connected to the edge computing unit. It can be controlled by the edge computing unit to achieve horizontal rotation 0-355° and vertical tilt 0-90° for real-time acquisition of material yard images and video information;

[0020] The GPS module can be a u-blox NEO-M8N model, with a positioning accuracy of ≤2.5 meters (CEP95). It supports GPS, GLONASS, and Galileo multi-satellite systems, has a built-in high-gain ceramic antenna, is installed on the top of the monitoring box, and is connected to the edge computing unit to obtain the device's geographical location information in real time.

[0021] Preferably, the alarm device includes:

[0022] Audible and visual alarm: volume ≥85dB, with red LED strobe lights, installed on both sides of the enclosure;

[0023] The relay output interface is used to connect to an external high-pressure fine water mist system (rated voltage DC24V, current 5A).

[0024] Preferably, the power module includes:

[0025] Solar panels: Made of monocrystalline silicon, 50W power, fixed to the top of the box at a 45° tilt angle;

[0026] Lithium battery pack: 120Ah capacity, built-in BMS battery management system, located in the bottom compartment of the casing.

[0027] Preferably, the edge computing unit is an NXP i.MX6UL model, which integrates a multi-sensor data fusion algorithm, supports RS485 / CAN bus, and has video image analysis and processing capabilities. It can perform real-time analysis of the images captured by the camera, including detecting abnormal situations such as flames and smoke.

[0028] The 4G communication module is a Huawei ME909s model, which supports LTE Cat.4, and its antenna is hidden on the side of the enclosure.

[0029] Preferably, the support bracket is made of hot-dip galvanized steel pipe (100mm in diameter), which is fixed to the highest point of the material yard by expansion bolts, and the field of vision coverage radius is ≥50m.

[0030] Preferably, the vibration temperature measuring cable is laid at 1.5m intervals and fixed to the concrete foundation at the edge of the raw material pile with U-shaped clips. The length of each cable segment is ≤200m (if it exceeds this, a repeater is added).

[0031] Preferably, when installing the high-definition camera, ensure that there is no obstruction in front of the lens, and adjust its initial angle to be horizontal forward and vertical downward 15° using the adjustment knob on the bracket.

[0032] Preferably, the GPS module is installed at the top center of the monitoring box, ensuring that the antenna faces upwards and there are no metal obstructions around it.

[0033] This utility model also claims a multi-sensor fusion system for realizing safety monitoring of biomass gasification sites, the system including the aforementioned intelligent fire monitoring terminal.

[0034] Compared with existing technologies, the intelligent fire monitoring terminal and multi-sensor fusion system of this utility model have the following advantages:

[0035] 1. Multi-dimensional monitoring: Integrating infrared thermal imaging, smoke concentration, contact temperature measurement, and video monitoring data to solve the problem of missed detection by a single sensor, the accuracy of early fire identification is improved to over 95%; the camera captures images in real time, making it easy to intuitively judge the fire situation and the trend of fire spread.

[0036] 2. Precise positioning: The vibration-type temperature measuring cable enables meter-level positioning of the fire source, and the GPS module provides the device with a precise geographical location, assisting firefighters in responding quickly and shortening rescue time.

[0037] 3. Visual monitoring: The high-definition camera supports infrared night vision and wide-angle shooting. The viewing angle can be remotely controlled via mobile phone. Managers can view the entire material yard in real time without going to the site and promptly detect potential safety hazards.

[0038] 4. Environmental adaptability: Solar power supply + IP66 protection, supports wide temperature range of -40℃ to 85℃, suitable for outdoor scenarios without mains power; GPS module supports multiple satellite systems, and can stably obtain location information even in complex environments.

[0039] 5. Linkage Control: Integrated relay interface, which can directly link with the fine water mist system to control the fire in its early stages; when an alarm is triggered, video and location information are pushed simultaneously for easy command and dispatch. Attached Figure Description

[0040] Figure 1 This is a schematic diagram of the intelligent fire monitoring terminal architecture provided in this embodiment of the utility model;

[0041] Figure 2 This is a schematic diagram of the laying of the vibration-type temperature measuring cable provided in this embodiment of the utility model;

[0042] Figure 3 This is a block diagram of the multi-sensor fusion system provided in this embodiment of the utility model. Detailed Implementation

[0043] This utility model provides an intelligent fire monitoring terminal, including a columnar support bracket, a monitoring box set on the top of the bracket, a power module, a control module, an alarm device, and vibration-type temperature measuring cables distributed in the material yard.

[0044] The monitoring box is made of aluminum alloy with a fire-retardant coating (thickness ≥50μm) on the surface. It has an IP66 protection rating and dimensions of 300mm×300mm×400mm.

[0045] The monitoring enclosure is equipped with sensor modules, which include a dual-band infrared detector, a smoke particle sensor, a wind speed and direction sensor, a high-definition camera, and a GPS module.

[0046] The dual-band infrared detector is a FLIR A310 infrared detector with a detection band of 3.2-4.8μm (high temperature band) and 8-14μm (normal temperature band), a field of view of 90°×75°, and an adjustable installation tilt angle (0-45°).

[0047] The smoke particle sensor is a Honeywell DF80 model smoke particle sensor, based on the principle of light scattering, with a detection particle size ≥0.01μm, a response time ≤10s, and is installed 10cm below the infrared detector;

[0048] The wind speed and direction sensor has a three-cup structure, a wind speed measurement range of 0-60m / s (accuracy ±0.1m / s), a wind direction resolution of 3°, and is installed on the top of the housing.

[0049] The high-definition camera is a Hikvision DS-2CD3T46WDV2-I3 model, with 4 megapixels, supports infrared night vision (night vision distance of 50 meters), has a wide-angle lens (field of view of 110°), is installed on the top front of the monitoring box, and is connected to the edge computing unit. It can be controlled by the edge computing unit to achieve horizontal rotation of 0-355° and vertical tilt of 0-90°, and collect images and video information of the material yard in real time.

[0050] The GPS module, model u-blox NEO-M8N, has a positioning accuracy of ≤2.5 meters (CEP95), supports GPS, GLONASS, and Galileo multi-satellite systems, has a built-in high-gain ceramic antenna, is installed on the top of the monitoring box, and is connected to the edge computing unit to obtain the device's geographical location information in real time.

[0051] The power module includes:

[0052] Solar panels: Made of monocrystalline silicon, 50W power, fixed to the top of the box at a 45° tilt angle;

[0053] Lithium battery pack: 120Ah capacity, built-in BMS battery management system, located in the bottom compartment of the casing.

[0054] The control module includes:

[0055] The edge computing unit, model NXP i.MX6UL, integrates multi-sensor data fusion algorithms, supports RS485 / CAN bus, and has video image analysis and processing capabilities. It can perform real-time analysis of images captured by cameras, including detecting abnormal situations such as flames and smoke.

[0056] The 4G communication module is a Huawei ME909s model, which supports LTE Cat.4, and its antenna is hidden on the side of the enclosure.

[0057] The alarm device includes:

[0058] Audible and visual alarm: volume ≥85dB, with red LED strobe lights, installed on both sides of the enclosure;

[0059] The relay output interface is used to connect to an external high-pressure fine water mist system (rated voltage DC24V, current 5A).

[0060] The vibration-type temperature measuring cable includes an armored stainless steel sheath and a vibration optical fiber and a platinum resistance temperature measuring element contained within the sheath. The vibration optical fiber detects mechanical vibration signals with a positioning accuracy of ±1m. The platinum resistance temperature measuring element (PT100, accuracy ±1℃) is used. The vibration-type temperature measuring cable is laid in a grid pattern on the surface of the raw material pile and connected to the monitoring box through a waterproof connector (IP68 rating).

[0061] A dual-band infrared detector, smoke particle sensor, wind speed and direction sensor, high-definition camera, and GPS module are electrically connected to the edge computing unit. A vibration-type temperature measuring cable is connected to the edge computing unit via a bus to achieve communication. The edge computing unit is connected to an alarm device. The edge computing unit triggers an alarm based on preset thresholds (such as infrared temperature difference > 15℃, smoke concentration > 500ppm, temperature measuring cable temperature > 60℃, or abnormalities such as flames or smoke detected in the camera image). At the same time, the alarm information, real-time video image, and equipment location information are sent to the administrator's mobile phone via a 4G module (delay ≤ 30s). The administrator can remotely control the camera to rotate and view the situation in different areas of the material yard via the mobile phone.

[0062] In this embodiment, the specific installation method of the device is as follows:

[0063] The support frame is made of hot-dip galvanized steel pipe (100mm in diameter) and is fixed to the highest point of the material yard with expansion bolts, with a field of vision coverage radius of ≥50m.

[0064] Vibration temperature measuring cables are laid at 1.5m intervals and fixed to the concrete foundation at the edge of the raw material pile with U-shaped clips. The length of each cable section is ≤200m (if it exceeds this, a repeater is added).

[0065] When installing the high-definition camera, ensure that there are no obstructions in front of the lens, and adjust its initial angle to horizontal forward and vertical downward 15° using the adjustment knob on the bracket.

[0066] The GPS module is installed at the top center of the monitoring box, ensuring that the antenna faces upwards and there are no metal obstructions around it.

[0067] The workflow is as follows:

[0068] The solar panels charge all day, while the lithium battery pack maintains the system's power supply (supporting 7 days of continuous operation in cloudy or rainy weather);

[0069] The dual-band infrared detector scans the material yard every 2 seconds, and the edge computing unit calculates the infrared temperature difference in real time; the smoke particle sensor monitors the smoke concentration in real time; the high-definition camera captures a frame every 1 second, and the edge computing unit analyzes the image in real time to detect whether there are any abnormalities such as flames or smoke; the GPS module updates the equipment location information once per second.

[0070] When the local temperature difference is greater than 15°C and the smoke concentration is greater than 500ppm, or when abnormalities such as flames and smoke are detected in the camera footage, a Level 1 warning (audio and visual alarm) will be triggered.

[0071] If the vibration-type temperature measuring cable detects a temperature >60℃ for 3 minutes, the edge computing unit determines it as a fire hazard and activates a level two alarm: simultaneously triggering an audible and visual alarm, sending alarm information, current video footage, and equipment location information to the administrator's mobile phone via the 4G module, and outputting a relay signal to activate the fine water mist system (spraying water at a rate of 5L / min, covering a radius of 3m); the administrator can remotely control the camera rotation via a mobile APP to view the situation in other areas of the material yard, determine the direction of fire spread, and direct rescue work.

[0072] This utility model embodiment also provides a multi-sensor fusion system for realizing safety monitoring of biomass gasification sites. The system includes the aforementioned intelligent fire prevention monitoring terminal and may also include a high-pressure fine water mist subsystem. The method by which this system realizes safety monitoring of biomass gasification sites is as follows:

[0073] The solar panels charge all day, while the lithium battery pack maintains the system's power supply (supporting 7 days of continuous operation in cloudy or rainy weather);

[0074] The dual-band infrared detector scans the material yard every 2 seconds, and the edge computing unit calculates the infrared temperature difference in real time; the smoke particle sensor monitors the smoke concentration in real time; the high-definition camera captures a frame every 1 second, and the edge computing unit analyzes the image in real time to detect whether there are any abnormalities such as flames or smoke; the GPS module updates the equipment location information once per second.

[0075] When the local temperature difference is greater than 15°C and the smoke concentration is greater than 500ppm, or when abnormalities such as flames and smoke are detected in the camera footage, a Level 1 warning (audio and visual alarm) will be triggered.

[0076] If the vibration-type temperature measuring cable detects a temperature >60℃ for 3 minutes, the edge computing unit determines it as a fire hazard and activates a level two alarm: simultaneously triggering an audible and visual alarm, sending alarm information, current video footage, and equipment location information to the administrator's mobile phone via the 4G module, and outputting a relay signal to activate the fine water mist system (spraying water at a rate of 5L / min, covering a radius of 3m); the administrator can remotely control the camera rotation via a mobile APP to view the situation in other areas of the material yard, determine the direction of fire spread, and direct rescue work.

[0077] Through the above specific embodiments, those skilled in the art can easily implement this utility model. However, it should be understood that this utility model is not limited to the specific embodiments described above. Based on the disclosed embodiments, those skilled in the art can arbitrarily combine different technical features to achieve different technical solutions.

[0078] Except for the technical features described in the specification, all other technologies are known to those skilled in the art.

Claims

1. An intelligent fire monitoring terminal, characterized in that, It includes a column-shaped support frame, a monitoring box mounted on top of the support frame, an alarm device, a control module, a power supply module, and vibration-type temperature measuring cables distributed throughout the material yard. The monitoring box is equipped with sensor modules, which include a dual-band infrared detector, a smoke particle sensor, a wind speed and direction sensor, a high-definition camera, and a GPS module. The vibration-type temperature measuring cable includes an armored stainless steel sheath and a vibration optical fiber and a platinum resistance temperature measuring element contained inside the sheath; the vibration-type temperature measuring cable is laid in a grid pattern on the surface of the raw material pile and connected to the monitoring box through a waterproof connector. The control module includes an edge computing unit and a 4G communication module. The dual-band infrared detector, smoke particle sensor, wind speed and direction sensor, high-definition camera and GPS module are electrically connected to the edge computing unit. The vibration temperature measurement cable is connected to the edge computing unit through a bus to achieve communication. The edge computing unit is connected to the alarm device.

2. The intelligent fireproof monitoring terminal according to claim 1, characterized in that, The dual-band infrared detector is a FLIR A310 infrared detector with an adjustable installation tilt angle. The smoke particle sensor is a Honeywell DF80 model smoke particle sensor, installed 10cm below the infrared detector; The wind speed and direction sensor has a three-cup structure and is installed on the top of the housing. The high-definition camera supports infrared night vision, has a wide-angle lens, is installed on the top front of the monitoring box, is connected to the edge computing unit, and can achieve horizontal rotation of 0-355° and vertical tilt of 0-90°. The GPS module supports multiple satellite systems including GPS, GLONASS, and Galileo. It has a built-in high-gain ceramic antenna, is installed on the top of the monitoring box, and is connected to the edge computing unit.

3. The intelligent fire prevention monitoring terminal according to claim 1, characterized in that, The alarm device includes: Audible and visual alarm: volume ≥85dB, with red LED strobe light, installed on both sides of the enclosure; The relay output interface is used to connect to an external high-pressure fine water mist system.

4. The intelligent fire prevention monitoring terminal according to claim 1, wherein, The power module includes: Solar panels: Made of monocrystalline silicon, fixed to the top of the box at a 45° angle; Lithium battery pack: 120Ah capacity, built-in BMS battery management system, located in the bottom compartment of the casing.

5. The intelligent fire prevention monitoring terminal according to claim 1, wherein The edge computing unit, model NXP i.MX6UL, integrates a multi-sensor data fusion algorithm, supports RS485 / CAN bus, and has video image analysis and processing capabilities. The 4G communication module is a Huawei ME909s, which supports LTE Cat.4, and its antenna is hidden on the side of the enclosure.

6. The intelligent fire prevention monitoring terminal according to claim 1, wherein The support frame is made of hot-dip galvanized steel pipe and is fixed to the highest point of the material yard by expansion bolts, with a field of view coverage radius of ≥50m.

7. The intelligent fire prevention monitoring terminal according to claim 1, wherein The vibration-type temperature measuring cable is laid at 1.5m intervals and fixed to the concrete foundation at the edge of the raw material pile with U-shaped clips. The length of each cable segment is ≤200m.

8. The intelligent fireproof monitoring terminal according to claim 1 or 2, characterized in that, When installing the high-definition camera, ensure that there are no obstructions in front of the lens, and adjust its initial angle to horizontal forward and vertical downward 15° using the adjustment knob on the bracket.

9. The intelligent fire prevention monitoring terminal according to claim 1 or 2, characterized in that, The GPS module is installed at the top center of the monitoring box, ensuring that the antenna faces upwards and there are no metal obstructions around it.

10. A multi-sensor fusion system for enabling safety monitoring of a biomass gasification stockyard, characterized by, The system includes the intelligent fire monitoring terminal as described in any one of claims 1 to 9.

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