A confined space safety monitoring device

Abstract

The utility model relates to the field of limited space safety monitoring technique, specifically, relate to a kind of limited space safety monitoring equipment, including field terminal, microcontroller, gas concentration detection unit and video acquisition unit, gas concentration detection unit is used to gather gas information in limited space, and gas information is sent to microcontroller.Video acquisition unit is used to gather video picture in limited space, and image information is sent to microcontroller.The gas data and video data collected are fused by microcontroller, and then the gas data and video picture are synchronously sent to the field terminal in real time by microcontroller, to ensure the synchronism and authenticity of video picture and gas data, ensure the consistency of video and environmental gas, and facilitate storage traceability.Compared with wired communication mode connection, the communication distance is extended, the use of cable is saved, and the monitoring needs of limited space are better met.

Description

Technical Field

[0001] This utility model relates to the field of confined space safety monitoring technology, specifically, to a confined space safety monitoring device. Background Technology

[0002] Confined spaces are enclosed or semi-enclosed facilities and locations with restricted access, poor ventilation, and the potential presence of flammable, explosive, toxic, or hazardous substances, or those lacking oxygen. These spaces pose a threat to the health and safety of personnel entering them. Common examples include reactors, towers, tanks, basements, and manholes. To effectively control the safety risks of working in confined spaces, continuous monitoring of the work environment is necessary.

[0003] Most of the components of existing confined space safety monitoring equipment are connected by wired communication, which has a limited communication distance. Even with an extension cable, the extension distance is usually less than 50 meters, which is insufficient to meet the monitoring needs of confined spaces. Utility Model Content

[0004] To address the problem that most components of existing confined space safety monitoring equipment are connected via wired communication, resulting in limited communication distance and failing to meet the monitoring needs of confined spaces, this utility model provides a confined space safety monitoring device.

[0005] A confined space safety monitoring device provided to achieve the purpose of this utility model includes:

[0006] The field terminal is installed outside a confined space.

[0007] The microcontroller is installed in a confined space and wirelessly connected to the field terminal.

[0008] The gas concentration detection unit is installed in a confined space and wirelessly connected to the microcontroller.

[0009] The video acquisition unit is installed in a confined space and wirelessly connected to the microcontroller.

[0010] In some specific embodiments, the gas concentration detection unit includes:

[0011] A methane concentration detector is installed in the upper part of a confined space and wirelessly connected to a microcontroller.

[0012] And / or, a hydrogen concentration detector, installed in the upper part of a confined space, wirelessly connected to a microcontroller;

[0013] And / or, a carbon monoxide concentration detector, installed in the upper part of a confined space, wirelessly connected to a microcontroller;

[0014] And / or, a carbon dioxide concentration detector, installed in the lower part of a confined space, wirelessly connected to a microcontroller;

[0015] And / or, a hydrogen sulfide concentration detector, installed in the lower part of a confined space, wirelessly connected to a microcontroller;

[0016] And / or, a sulfur dioxide concentration detector, installed in the lower part of a confined space, wirelessly connected to a microcontroller.

[0017] In some specific embodiments, there are two or more video acquisition units, which are respectively arranged on both sides of the confined space and wirelessly connected to the microcontroller.

[0018] In some specific embodiments, each video acquisition unit includes:

[0019] Fixed mounting base, for fixed installation in confined spaces;

[0020] A rotating base, with its axis set vertically, is mounted on a fixed base and can rotate around its own axis.

[0021] The first servo motor is mounted on a fixed base, and its output shaft is fixedly connected to the rotary base to drive the rotary base to rotate.

[0022] The pitch mount can be mounted on the swivel mount, allowing it to swing up and down.

[0023] The second servo motor is mounted on the rotary base, and its output shaft is fixedly connected to the pitch base to drive the pitch base to swing.

[0024] The camera, mounted on a tilt mount, can rotate with the swivel mount and can swing up and down with the tilt mount.

[0025] In some specific embodiments, it also includes:

[0026] Two or more wristbands are placed in a confined space and each is wirelessly connected to a microcontroller.

[0027] In some specific embodiments, it also includes:

[0028] A walkie-talkie, placed in a confined space, is wirelessly connected to a microcontroller.

[0029] In some specific embodiments, it also includes:

[0030] An alarm device, installed in a confined space, is wirelessly connected to a microcontroller.

[0031] In some specific embodiments, it also includes:

[0032] The monitoring room terminal is wirelessly connected to the microcontroller.

[0033] And / or, a remote terminal, wirelessly connected to the microcontroller.

[0034] In some specific embodiments, the microcontroller and the field terminal are wirelessly connected via Wi-Fi or cellular mobile communication.

[0035] The gas concentration detection unit and the microcontroller are wirelessly connected via Wi-Fi or LoRa.

[0036] The video acquisition unit and the microcontroller are wirelessly connected via Wi-Fi.

[0037] The monitoring room terminal and the microcontroller are wirelessly connected via Wi-Fi.

[0038] The remote terminal and the microcontroller are wirelessly connected using cellular mobile communication.

[0039] The beneficial effects of this invention are as follows: The confined space safety monitoring device of this invention comprises a field terminal, a microcontroller, a gas concentration detection unit, and a video acquisition unit. The gas concentration detection unit is installed within the confined space and wirelessly connected to the microcontroller to collect gas information within the confined space and transmit this information to the microcontroller. The video acquisition unit is also installed within the confined space and wirelessly connected to the microcontroller to collect video footage within the confined space and transmit the image information to the microcontroller. The collected gas data and video data are fused by the microcontroller, which then synchronously transmits the gas data and video footage to the field terminal in real time. This ensures the synchronization and authenticity of the video footage and gas data, guaranteeing consistency between the video and the ambient gas during data flow analysis, facilitating storage and traceability. Compared to wired communication, this significantly extends the communication distance, saves on cable usage, eliminates the need for heavy cables at the work site, saves time and manpower, and better meets the monitoring needs of confined spaces. Attached Figure Description

[0040] Figure 1 This is a schematic diagram illustrating the working principle of a confined space safety monitoring device according to this utility model;

[0041] Figure 2 This is a schematic diagram of the video acquisition unit.

[0042] In the attached diagram, 110 is the field terminal; 120 is the microcontroller; 131 is the methane concentration detector; 132 is the hydrogen concentration detector; 133 is the carbon monoxide concentration detector; 134 is the carbon dioxide concentration detector; 135 is the hydrogen sulfide concentration detector; 136 is the sulfur dioxide concentration detector; 140 is the video acquisition unit; 141 is the fixed base; 142 is the rotating base; 1421 is the bracket; 143 is the first servo motor; 144 is the pitch base; 145 is the second servo motor; 146 is the camera; 150 is the wristband; 160 is the walkie-talkie; 170 is the monitoring room terminal; 180 is the remote terminal; and 200 is the confined space. Detailed Implementation

[0043] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0044] Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar symbols denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0045] In the description of this utility model, it should be understood that the terms "top", "bottom", "inner", "outer", "axis", "circumferential", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model or simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0046] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0047] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," "fixing," "linking," and "hinged" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0048] As mentioned in the background section, most components of existing confined space safety monitoring equipment are connected via wired communication, which has limited communication distance. Even with an extension cable, the extension distance is typically less than 50 meters, which is also limited. Furthermore, due to the special requirements of the operating environment for cables, they are relatively thick and heavy, making transportation inconvenient and on-site deployment time-consuming and labor-intensive, thus affecting efficiency. Therefore, existing confined space safety monitoring equipment cannot meet the needs of confined space monitoring.

[0049] To improve the above problems, refer to Figure 1 and Figure 2 A confined space safety monitoring device is provided, including a field terminal 110, a microcontroller 120, a gas concentration detection unit, and a video acquisition unit 140. The field terminal 110 is installed outside the confined space 200. The microcontroller 120 is installed inside the confined space 200 and wirelessly connected to the field terminal 110. The gas concentration detection unit, installed inside the confined space 200 and wirelessly connected to the microcontroller 120, is used to collect gas information within the confined space 200 and send the gas information to the microcontroller 120. The video acquisition unit 140, installed inside the confined space 200 and wirelessly connected to the microcontroller 120, is used to collect video images within the confined space 200 and send the image information to the microcontroller 120. The collected gas data and video data are fused by the microcontroller 120, and then the microcontroller 120 synchronously sends the gas data and video images to the field terminal 110 in real time to ensure the synchronization and authenticity of the video images and gas data. This ensures consistency between the video and the ambient gas during data flow analysis and facilitates storage and traceability. Compared to wired communication, this method significantly extends the communication distance, saves on cable usage, eliminates the need to deploy heavy cables at the work site, saves time and manpower, and better meets the monitoring needs of a confined space of 200.

[0050] It should be noted that methane, hydrogen, and carbon monoxide are less dense than air, while carbon dioxide, hydrogen sulfide, and sulfur dioxide are more dense than air. Therefore, methane, hydrogen, and carbon monoxide are concentrated in the upper part of the confined space 200, while carbon dioxide, hydrogen sulfide, and sulfur dioxide are concentrated in the lower part of the confined space 200.

[0051] Specifically, in the example, such as Figure 1 As shown, the gas concentration detection unit includes a methane concentration detector 131 and / or a hydrogen concentration detector 132 and / or a carbon monoxide concentration detector 133 and / or a carbon dioxide concentration detector 134 and / or a hydrogen sulfide concentration detector 135 and / or a sulfur dioxide concentration detector 136. The methane concentration detector 131 is installed in the upper part of the confined space 200 and wirelessly connected to the microcontroller 120. It is used to collect the concentration of methane in the upper part of the confined space 200 and send the collected data to the microcontroller 120. The hydrogen concentration detector 132 is installed in the upper part of the confined space 200 and wirelessly connected to the microcontroller 120. It is used to collect the concentration of hydrogen in the upper part of the confined space 200 and send the collected data to the microcontroller 120. The carbon monoxide concentration detector 133 is installed in the upper part of the confined space 200 and wirelessly connected to the microcontroller 120. It is used to collect the concentration of carbon monoxide in the upper part of the confined space 200 and send the collected data to the microcontroller 120. A carbon dioxide concentration detector 134 is installed in the lower part of the confined space 200 and wirelessly connected to the microcontroller 120. It collects the carbon dioxide concentration in the lower part of the confined space 200 and sends the collected data to the microcontroller 120. A hydrogen sulfide concentration detector 135 is also installed in the lower part of the confined space 200 and wirelessly connected to the microcontroller 120. It collects the hydrogen sulfide concentration in the lower part of the confined space 200 and sends the collected data to the microcontroller 120. A sulfur dioxide concentration detector 136 is also installed in the lower part of the confined space 200 and wirelessly connected to the microcontroller 120. It collects the sulfur dioxide concentration in the lower part of the confined space 200 and sends the collected data to the microcontroller 120. Different gas detectors are deployed at different locations based on the gas characteristics to achieve full coverage gas monitoring in both low and high areas. Simultaneously, the number of gas detectors is rationally deployed according to the site environment and size, enabling real-time detection of gas concentrations throughout the entire working environment. This avoids blind spots, improves the range and accuracy of environmental gas monitoring, and forms an effective dynamic monitoring system.

[0052] Specifically, in the example, such as Figure 1 As shown, there are two or more video acquisition units 140, respectively located on both sides of the confined space 200, and each wirelessly connected to the microcontroller 120. The two or more video acquisition units 140 are used to acquire video footage within the confined space 200 and send the image information to the microcontroller 120, avoiding blind spots in video monitoring and achieving full-area, real-time monitoring of the workspace.

[0053] Preferably, there are two video acquisition units 140, which can reduce blind spots in video surveillance and lower costs.

[0054] Preferably, such as Figure 2 As shown, each video acquisition unit 140 includes a fixed base 141, a rotating base 142, a first servo motor 143, a pitch mount 144, a second servo motor 145, and a camera 146. The fixed base 141 is fixedly installed in the center of the confined space 200. The rotating base 142 is vertically oriented and rotatably mounted on top of the fixed base 141. The first servo motor 143 is mounted on the bottom of the fixed base 141, and its output shaft is fixedly connected to the bottom of the rotating base 142 to drive the rotating base 142 to rotate. Two supports 1421 are formed on the top of the rotating base 142. The two supports 1421 are positioned opposite each other. The pitch mount 144 is mounted between the two supports 1421 of the rotating base 142 and can swing up and down. It can swing up and down ±45° relative to the horizontal line. The second servo motor 145 is mounted on one of the brackets 1421 of the rotary base 142, and its output shaft is fixedly connected to one side of the pitch base 144, used to drive the pitch base 144 to swing up and down. The camera 146 is mounted on the pitch base 144 and can rotate with the rotary base 142 and swing up and down with the pitch base 144. The first servo motor 143 can drive the rotary base 142 to rotate 360°, thereby driving the pitch base 144 and the camera 146 to rotate 360°. The second servo motor 145 can drive the pitch base 144 to swing up and down ±45° relative to the horizontal line, thereby driving the camera 146 to swing up and down ±45°.

[0055] Preferably, the camera 146 supports 20x optical zoom and has a monitoring distance of 50-80 meters.

[0056] Specifically, in the example, such as Figure 1 As shown, the confined space safety monitoring equipment also includes two or more wristbands 150, a walkie-talkie 160, and an alarm. The two or more wristbands 150 are installed within the confined space 200 and wirelessly connected to the microcontroller 120. They are worn by workers to collect vital signs such as heart rate and blood oxygen saturation, and transmit the data to the microcontroller 120 in real time, facilitating real-time monitoring of the workers' physical condition. The walkie-talkie 160 is installed within the confined space 200 and wirelessly connected to the microcontroller 120. The walkie-talkie 160 is equipped with a high-sensitivity omnidirectional microphone and a high-volume speaker to meet the requirements for timely communication on-site. The walkie-talkie 160 can not only be used for conversation but also for detecting the ambient sound. The alarm is an audible and visual alarm, installed within the confined space 200 and wirelessly connected to the microcontroller 120. When the concentration of harmful gases in the working environment exceeds the standard or other dangerous situations occur, the microcontroller 120 controls the alarm to trigger an alarm signal to alert the workers.

[0057] Specifically, in the exemplary embodiment, the confined space safety monitoring equipment also includes a monitoring room terminal 170 and / or a remote terminal 180. The monitoring room terminal 170 is wirelessly connected to the microcontroller 120, facilitating monitoring and guidance of on-site operations from the monitoring room. The remote terminal 180 is wirelessly connected to the microcontroller 120, facilitating remote monitoring and guidance of on-site operations. The field terminal 110 can adjust the angle and focus of the camera 146 to achieve the best monitoring effect and can communicate with the operators. Both the field terminal 110 and the monitoring room terminal 170 are equipped with displays for showing the monitoring video.

[0058] Specifically, in the example, the microcontroller 120 is wirelessly connected to the field terminal 110 via Wi-Fi or 4G / 5G cellular mobile communication to meet the requirements of long-distance large data transmission. The methane concentration detector 131, hydrogen concentration detector 132, carbon monoxide concentration detector 133, carbon dioxide concentration detector 134, hydrogen sulfide concentration detector 135, and sulfur dioxide concentration detector 136 of the gas concentration detection unit are wirelessly connected to the microcontroller 120 via Wi-Fi or LoRa, respectively, to meet the requirements of long-distance small data transmission with low power consumption. Wi-Fi and LoRa can employ amplified power transmission and high-sensitivity reception to achieve transmission distances exceeding 100 meters. The camera 146 of the video acquisition unit 140 is wirelessly connected to the microcontroller 120 via Wi-Fi to meet the requirements of long-distance large data transmission. The monitoring room terminal 170 is wirelessly connected to the microcontroller 120 via Wi-Fi. The remote terminal 180 is wirelessly connected to the microcontroller 120 via 4G / 5G cellular mobile communication. All data is collected, calculated, analyzed, integrated, distributed, and stored at the microcontroller 120, making it the central hub of all data links. The wristband 150 connects wirelessly to the microcontroller 120 via LoRa, balancing speed and power consumption. The walkie-talkie 160 also connects wirelessly to the microcontroller 120 via LoRa, again balancing speed and power consumption. The alarm connects wirelessly to the microcontroller 120 via LoRa. All of these electrical devices are powered by their own internal batteries.

[0059] In the description of this specification, the references to terms such as "an embodiment," "some embodiments," "example," "specific example," "a specific embodiment," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0060] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the scope disclosed in the present utility model, based on the technical solution and concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A confined space safety monitoring device, characterized in that, include: The field terminal is installed outside the confined space; A microcontroller is installed in the confined space and wirelessly connected to the field terminal. A gas concentration detection unit is installed in the confined space and wirelessly connected to the microcontroller. The video acquisition unit is installed in the confined space and is wirelessly connected to the microcontroller.

2. The confined space safety monitoring device according to claim 1, characterized in that, The gas concentration detection unit includes: A methane concentration detector is installed in the upper part of the confined space and is wirelessly connected to the microcontroller. And / or, a hydrogen concentration detector, installed in the upper part of the confined space, is wirelessly connected to the microcontroller; And / or, a carbon monoxide concentration detector, installed in the upper part of the confined space, is wirelessly connected to the microcontroller; And / or, a carbon dioxide concentration detector, installed in the lower part of the confined space, is wirelessly connected to the microcontroller; And / or, a hydrogen sulfide concentration detector, installed in the lower part of the confined space, is wirelessly connected to the microcontroller; And / or, a sulfur dioxide concentration detector, installed in the lower part of the confined space, is wirelessly connected to the microcontroller.

3. The confined space safety monitoring device according to claim 1, characterized in that, There are two or more video acquisition units, which are respectively set on both sides of the confined space and wirelessly connected to the microcontroller.

4. The confined space safety monitoring device according to claim 3, characterized in that, Each of the video acquisition units includes: The mounting base is fixedly installed within the confined space; The rotating base, with its axis vertically set, is mounted on the fixed base and can rotate around its own axis; The first servo motor is mounted on the fixed base, and its output shaft is fixedly connected to the rotating base to drive the rotating base to rotate. The pitch seat is mounted on the rotary seat and can swing up and down. The second servo motor is mounted on the rotary base, and its output shaft is fixedly connected to the pitch base, which is used to drive the pitch base to swing. The camera, mounted on the tilt mount, can rotate with the rotary mount and swing up and down with the tilt mount.

5. The confined space safety monitoring device according to claim 1, characterized in that, Also includes: Two or more wristbands are placed within the confined space and are wirelessly connected to the microcontroller.

6. The confined space safety monitoring device according to claim 1, characterized in that, Also includes: A walkie-talkie is placed within the confined space and wirelessly connected to the microcontroller.

7. The confined space safety monitoring device according to claim 1, characterized in that, Also includes: An alarm is installed within the confined space and is wirelessly connected to the microcontroller.

8. The confined space safety monitoring device according to claim 1, characterized in that, Also includes: The monitoring room terminal is wirelessly connected to the microcontroller. And / or, a remote terminal, wirelessly connected to the microcontroller.

9. The confined space safety monitoring device according to claim 8, characterized in that, The microcontroller and the field terminal are wirelessly connected via Wi-Fi or cellular mobile communication. The gas concentration detection unit is wirelessly connected to the microcontroller via Wi-Fi or LoRa. The video acquisition unit and the microcontroller are wirelessly connected via Wi-Fi. The monitoring room terminal and the microcontroller are wirelessly connected via Wi-Fi. The remote terminal and the microcontroller are wirelessly connected via cellular mobile communication.

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