CN212873699U - Entrance monitoring device for limited space - Google Patents

Abstract

An embodiment of the utility model provides a restricted space entry monitoring devices belongs to the safety control field. The device comprises: the gas detection module is arranged in the limited space and used for detecting the toxic and harmful gas in the limited space in real time and generating corresponding toxic and harmful gas parameter information; the sensing module is arranged at the entrance position of the limited space and used for generating triggering information when a moving object is identified; the processing module is connected with the gas detection module and the induction module and used for generating a corresponding alarm instruction according to the toxic and harmful gas parameter information and the trigger information; and the alarm module is arranged at the entrance position of the limited space, is connected with the processing module and is used for executing the alarm instruction. The automatic monitoring of suspicious personnel and the corresponding alarm reminding according to the actual situation in the limited space are realized, and the safety accidents caused by unauthorized entry of irrelevant personnel into the limited space are avoided.

Description

Entrance monitoring device for limited space

Technical Field

The utility model relates to a safety control field specifically relates to a restricted space entry monitoring devices.

Background

The limited space operation has the advantages of wide related fields, complex operation conditions and relatively more potential safety hazards, and if a person who does not wear related safety equipment enters the operation surface of the limited space without permission, safety accidents are easily caused, and the rescue difficulty in the limited space is also very high after the safety accidents occur.

In order to avoid the situation, entrance personnel monitoring is indispensable during operation in the limited space, in the traditional limited space entrance management, measures such as a warning board, hard protection, guardian monitoring and the like are usually used for preventing suspicious personnel from entering the limited space without permission, but because the field supervisor monitors the fact that the suspicious personnel are out of duty and the suspicious personnel cannot know the severity of the situation in the limited space, the situation that the suspicious personnel enter the operation surface in the limited space without permission is frequent, so that a device capable of automatically detecting the suspicious personnel and carrying out alarm reminding according to the actual situation in the limited space becomes necessary.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a device, the device realize the suspicious personnel of automated inspection to according to actual conditions warning in the confined space and remind.

In order to achieve the above object, the utility model provides a restricted space entry monitoring devices, restricted space entry monitoring devices includes: the gas detection module is arranged in the limited space and used for detecting the toxic and harmful gas in the limited space in real time and generating corresponding toxic and harmful gas parameter information; the sensing module is arranged at the entrance position of the limited space and used for generating triggering information when a moving object is identified; the processing module is connected with the gas detection module and the induction module and used for generating a corresponding alarm instruction according to the toxic and harmful gas parameter information and the trigger information; and the alarm module is arranged at the entrance position of the limited space, is connected with the processing module and is used for executing the alarm instruction.

Preferably, the gas detection module, the sensing module, the processing module and the alarm module all comprise communication modules for transmitting information instructions.

Preferably, the gas detection module comprises a plurality of gas concentration sensors, which are respectively used for detecting a plurality of toxic and harmful gases.

Preferably, the sensing module includes an infrared sensor, a radar sensor and/or an image recognition sensor for living body recognition and distance measurement.

Preferably, the alarm module comprises an audible and visual alarm.

Preferably, the audible and visual alarm is an audible and visual alarm capable of giving out different audible and visual alarms under different alarm levels.

Preferably, the restricted space entrance monitoring apparatus further comprises: and the instruction pushing module is connected with the processing module and used for pushing the alarm information to a mobile equipment end in communication connection with the limited space entrance monitoring device according to the alarm instruction.

Preferably, the restricted space entrance monitoring apparatus further comprises: the operation panel is used for generating a stop alarm instruction according to manual operation of a user; the alarm module is also used for executing the alarm stopping instruction.

Preferably, the restricted space entrance monitoring apparatus further comprises: and the monitoring information recording module is connected with the processing module and used for recording monitoring information according to the alarm instruction.

Preferably, the restricted space entrance monitoring apparatus further comprises: and the display panel is arranged at the entrance position of the limited space, is connected with the processing module and the monitoring information recording module, and is used for displaying the toxic and harmful gas parameter information and the monitoring information.

Through the technical scheme, the gas detection module arranged in the limited space carries out real-time detection on toxic and harmful gases, the sensing module arranged at the entrance position of the limited space monitors suspicious personnel in real time, when the suspicious personnel are identified, the processing module detects the movement direction of the suspicious personnel in real time through the sensing module, and generates corresponding alarm prompt by combining the concentration information of the toxic and harmful gases in the limited space, so that the suspicious personnel and field management personnel are reminded to confirm the identities, the situation that irrelevant personnel enter the operation surface of the limited space without permission is avoided, even if the field management personnel cannot find that the suspicious personnel enter the limited space in time, the alarm module can also send out alarm prompt to remind the field management personnel to confirm the identities of the personnel, and accidents are reduced.

Other features and advantages of embodiments of the present invention will be described in detail in the detailed description which follows.

Drawings

The accompanying drawings, which are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the embodiments of the invention, but do not constitute a limitation of the embodiments of the invention. In the drawings:

fig. 1 is a schematic structural diagram of a restricted space entrance monitoring device according to an embodiment of the present invention;

fig. 2 is a monitoring control flowchart of a restricted space entrance monitoring device according to an embodiment of the present invention.

Description of the reference numerals

10-a gas detection module; 20-a sensing module; 30-a processing module; 40-an alarm module; 50-monitoring information recording module; 60-a display module; 70-operating panel.

Detailed Description

The following describes in detail embodiments of the present invention with reference to the accompanying drawings. It is to be understood that the description herein is only intended to illustrate and explain embodiments of the present invention,

in the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1, the present embodiment provides a restricted space entrance monitoring device, including: the gas detection module 10 is arranged in the limited space and used for detecting the toxic and harmful gas in the limited space in real time and generating corresponding toxic and harmful gas parameter information; the sensing module 20 is arranged at the entrance position of the limited space and used for generating triggering information when a moving object is identified; the processing module 30 is connected with the gas detection module 10 and the sensing module 20, and is used for generating a corresponding alarm instruction according to the toxic and harmful gas parameter information and the trigger information; and the alarm module 40 is arranged at the entrance position of the limited space, is connected with the processing module 30 and is used for executing the alarm instruction.

Preferably, the gas detection module 10, the sensing module 20, the processing module 30 and the alarm module 40 all include communication modules for transmitting information instructions.

In the embodiment of the present invention, the gas detection module 10 is disposed in the restricted space, and the sensing module 20, the processing module 30 and the alarm module 40 are disposed at the entrance of the restricted space, in order to enable each module to form effective information communication, all the modules preferably include a communication module for information and command transmission, because the sensing module 20, the processing module 30 and the alarm module 40 are disposed outside the restricted space and the distances between the three are not very different, in order to achieve efficient and energy-saving information transmission, a wireless WiFi communication module or a bluetooth module is preferably disposed in the three modules, so as to achieve wireless communication among the sensing module 20, the processing module 30 and the alarm module 40, without the need of communication line arrangement between the three, and the communication parties are in a short distance, so that the anti-interference capability and timeliness of the wireless WiFi communication or the bluetooth communication are very good, the alarm module 40 can generate alarm information at the first time when any burst alarm command is generated. Information and instruction interaction is required between the gas detection module 10 and the processing module 30, and the environment and size of the limited space are not controllable, for example, during mine operation, the setting position of the processing gas detection module 10 may not receive communication network information, so WiFi communication and bluetooth communication cannot work in such an environment, in order to implement information interaction between the gas detection module 10 and the processing module 30, it is preferable to set a power carrier communication module in the gas detection module 10 and the processing module 30, and perform power carrier communication between the two through a power line, so as to avoid additional increase of a communication line between the two, and effectively utilize the power line connected between the two, although the data transmission rate of the power carrier communication mode is low and the anti-interference capability is poor, only simple gas parameter transmission needs to be performed between the gas detection module 10 and the processing module 30, the data type is single, the data volume is small, the information interaction between the gas detection module 10 and the processing module 30 can be completely met by a power carrier communication mode, the communication connection in a limited space and outside the limited space is realized, and the wiring cost of the system is reduced.

Preferably, the gas detection module 10 includes a plurality of gas concentration sensors, which are respectively used for detecting a plurality of toxic and harmful gases.

The embodiment of the utility model provides an in, when carrying out the work operation in the confined space, often because the special reason that is poor with air mobility of type of work causes poisonous and harmful gas in the confined space to accumulate, if when not having the protection of professional antitoxic equipment, probably take place the poisoning accident in getting into the confined space without permission, so, in order to avoid this kind of thing to take place, set up poisonous and harmful gas detection module in the confined space. The type of the poisonous and harmful gas detection module is determined according to the operation type of the limited space, for example, when the device of the utility model is applied to monitoring of coal mines, in order to adapt to monitoring of poisonous and harmful gases such as methane, carbon monoxide, sulfur dioxide and ammonia gas which often exist in mines, corresponding methane concentration sensors, carbon monoxide concentration sensors, sulfur dioxide concentration sensors and ammonia gas concentration sensors are arranged in mine operation areas, and in order to avoid the problem that the corresponding poisonous and harmful gas concentration monitoring data is inaccurate due to the fault of a single sensor, preferably, at least three poisonous and harmful gas monitoring sensors are arranged in the limited space, the processing module 30 receives the concentration information transmitted by three corresponding poisonous and harmful gas detection modules of the same poisonous and harmful gas, firstly, transverse comparison of the three data is carried out, when one data is obviously different from the other two data and the difference between the other two data is small, the processing module 30 determines the data with large difference as abnormal data, does not include the concentration reference data of the toxic and harmful gas, only calculates the average value of the other two data as the actual concentration data of the toxic and harmful gas, and calculates the average value of the three data as the actual concentration data of the toxic and harmful gas when the difference between the three data is small. Poisonous and harmful gas types that probably cause through operation type in the different confined spaces correspond and set up a plurality of poisonous and harmful gas detection device, and poisonous and harmful gas detection device type covers all poisonous and harmful gas types that probably produce during the operation in this confined space, guarantees the monitoring of all aspects of poisonous and harmful gas in the confined space, and entry control provides effectual data support for the confined space, and makes things convenient for the supervisor to carry out the management and control to the condition in the confined space.

In another possible embodiment, the restricted space inlet monitoring device is used for monitoring the restricted space inlet of a chemical device, for example, for internal maintenance of a chemical storage tank, before the chemical storage tank is maintained, stored liquid or gas in the storage tank needs to be cleaned up, so that harm to maintenance personnel caused by toxic and harmful gas/liquid is avoided, but the sealing performance of the storage tank is good, a severe working environment may be formed due to incomplete cleaning of stored substances after long-time maintenance operation or before, for example, problems of too low oxygen content, too high carbon dioxide content, too high combustible gas content, too high hydrogen sulfide gas content and the like may cause difficulty in breathing of the maintenance personnel, and a major safety accident may be caused by ignition of combustible gas during maintenance. Therefore, the maintainer gets into the inside in-process of overhauing of storage tank, and gas detection module 10 still is used for detecting the gas concentration information of non-poisonous harmful gas such as oxygen and carbon dioxide, tells the inside air condition of relevant personnel storage tank, under the too low or too high personnel condition of suffocating that probably causes of carbon dioxide content of oxygen content, tells the risk condition that the outside personnel of storage tank exist, reminds outside personnel not to get into the storage tank without authorization, avoids causing the incident.

The embodiment of the utility model provides an in, gaseous detection module 10 sets up according to the actual application operating mode, and the gas concentration type that detects as required carries out the pertinence setting to in follow-up use, can add the setting as required according to the actual demand, improve the practicality of device.

Preferably, the sensing module 20 includes an infrared sensor, a radar sensor and/or an image recognition sensor for living body recognition and distance measurement.

The embodiment of the utility model provides an in, restricted space entry often leads to the personnel who does not wear safety equipment to get into restricted space operation face without permission because personnel's supervision is out of order and takes place the incident, in order to avoid the supervision personnel of restricted space entry to fail in time to discover because of negligence have the problem of getting into restricted space personnel without permission, preferably sets up induction module 20 in restricted space entry position for the monitoring of moving object. For example, an infrared sensor is selected, the entrance monitoring of the restricted space mainly prevents people from entering without permission, so the detection of the moving target is actually the detection of the moving people, the detection radiation wavelength of the infrared sensor can be set to be near the human body radiation wavelength (preferably 8-14 μm), when a suspicious person appears in the detection range of the infrared sensor, the infrared sensor receives the human body radiation generated by the suspicious person and recognizes that the received radiation wavelength is within the preset alarm wavelength range, so the infrared sensor amplifies the radiation information to generate a corresponding pulse signal, when the suspicious person moves, the infrared sensor judges the position and distance of the suspicious person according to the received radiation intensity of the human body radiation of the suspicious person to form a pulse signal with corresponding intensity, and sends the pulse signal to the processing module 30 in real time, the processing module 30 determines whether suspicious people exist according to the pulse signal, whether the suspicious people move to the entrance of the restricted space, and when it is determined that the suspicious people are likely to enter the restricted space, the processing module 30 generates an alarm instruction.

In another possible embodiment, the sensing module 20 is an image recognition sensor, the image recognition sensor obtains video information of a monitoring picture of the entrance position of the restricted space in real time, in a continuous video picture, an abnormal judgment (preferably 1-5 frames) is performed every fixed number of frames, for example, at a certain fixed time, no abnormal target appears in the picture obtained by the image recognition sensor, after 5 frames are spaced, suspicious people appear in the picture, the processing module 30 compares the previous image information with the image information of the suspicious people, identifies the suspicious people, after 5 frames are spaced, compares the new image information with the image information of the movable people, judges whether the suspicious people move and move according to the fixed position and the imaging size of the suspicious people, performs a continuous image-to-back image comparison every 5 frames, and judging the moving track of the suspicious personnel, and generating an alarm instruction when the processing module 30 judges that the suspicious personnel is possible to enter the limited space.

Preferably, the alarm module 40 includes an audible and visual alarm.

In the embodiment of the present invention, in order to avoid the problem that suspicious persons and monitoring persons cannot receive alarm information due to negligence, an audible and visual alarm is preferably set, and when alarm reminding is required, according to the alarm instruction generated by the processing module 30, the alarm module 40 generates buzzing alarm information and flickering alarm information at the same time, so as to improve the probability that related persons effectively receive the alarm reminding information. Preferably, personalized voice alert information is set, such as voice alerts for banning of inroads, exceeding of methane, and asking to wear safety equipment, because, in the operation site, various alarm devices may exist, if each alarm device adopts a similar buzzer and flashing audible and visual alarm, misleading to related personnel may be caused, the voice alarm information customized individually can effectively distinguish the alarm information from other alarm information, related personnel can judge whether the alarm information is the alarm information monitored by the limited space entrance or not according to the content of the voice alarm information, and the processing module 30 generates a corresponding alarm instruction according to the actual toxic and harmful gas condition in the restricted space, and the abnormal concentration of the toxic and harmful gas in the restricted space is notified to relevant personnel in a voice broadcast mode, so that the attention of the relevant personnel is aroused, and the condition that suspicious personnel enter the restricted space without permission because the suspicious personnel cannot receive effective alarm reminding is avoided.

Preferably, the audible and visual alarm is an audible and visual alarm capable of giving out different audible and visual alarms under different alarm levels.

In the embodiment of the utility model, when the operation is started in the restricted space, the practice of entering the restricted space without authorization is not desirable in theory, but the relevant personnel may have the luck psychology, and when the situation is relatively safe in the restricted space, the person can enter the restricted space without authorization by wearing any safety equipment. In order to arouse the importance of the related personnel, the alarm device is providedAlarm prompt messages of different levels are set, for example, if no toxic and harmful gas in a limited space exceeds the standard, the alarm message level of the alarm device is the lowest level, the buzzer and the flicker frequency of the audible and visual alarm are lowest, and when the concentration of a certain toxic and harmful gas exceeds the standard, the processing module 30 presets a level threshold value of the exceeding concentration, for example, the level threshold value exceeds 5mg/m³Is of the first grade, more than 10mg/m³Is the second grade, and so on, every 5mg/m³The alarm device is set to be in a grade, the buzzing and flashing frequency of the alarm grade is gradually increased from a low grade to a high grade, and the corresponding toxic and harmful gas types and concentrations are simultaneously subjected to voice broadcasting reminding. And the related personnel judge the actual situation in the limited space according to the alarm grade information of the alarm module 40.

Preferably, the restricted space entrance monitoring apparatus further comprises: and the instruction pushing module is connected with the processing module 30 and used for pushing the alarm information to a mobile equipment end in communication connection with the limited space entrance monitoring device according to the alarm instruction.

The embodiment of the utility model provides an in, even suspicious personnel and on-the-spot supervisory personnel receive on-the-spot alarm information and remind, but still there is suspicious personnel to insist on entering into and the supervision of on-the-spot supervisory personnel is disliated and is led to the fact personnel to get into the possibility in the restricted space without permission, in order to avoid this kind of condition to take place, it is preferred, set up instruction propelling movement module in alarm module 40, send the alarm information on scene to remote supervisory personnel's mobile device end, remote supervisory personnel passes through the relevant management App or the on-the-spot alarm condition of SMS information understanding of equipment end, and long-range information confirmation and the management and control of carrying out, avoid the condition emergence of.

Preferably, the restricted space entrance monitoring apparatus further comprises: an operation panel 70 for generating a stop alarm instruction according to a manual operation by a user; the alarm module 40 is further configured to execute the stop alarm instruction.

The embodiment of the utility model provides an in, after relevant personnel received warning reminding information, when confirming for normally getting into the confined space or having kept away from confined space entry position, on-the-spot supervisor manually closes alarm information, avoids alarm module 40 to continue to report to the police.

Preferably, the restricted space entrance monitoring apparatus further comprises: and the monitoring information recording module 50 is connected with the processing module 30 and is used for recording monitoring information according to the alarm instruction.

The embodiment of the utility model provides an in, the relevant personnel probably insist on entering restricted space without permission under the abnormal conditions, and on-the-spot supervisory personnel and remote supervisory personnel all fail in time to stop, in order to carry out effective safety control, be convenient for the later stage to pursue the responsibility, it is preferred, restricted space entry monitoring devices is still including detecting information recording module and video detection module, video detection module sets up at restricted space entry position, when discovering suspicious personnel, on the one hand carry out on-the-spot and long-range warning and remind, monitoring information recording module 50 still carries out this alarm information's record and storage, video detection module carries out suspicious personnel's portrait collection simultaneously, the information of record includes alarm time, the alarm level, suspicious personnel portrait information and remove alarm information operation record. When a safety accident or fixed-time safety inspection occurs, the management personnel can extract alarm information, so that accountability and safety training of related personnel are performed.

Preferably, the restricted space entrance monitoring apparatus further comprises: and the display panel is arranged at the entrance position of the limited space, is connected with the processing module 30 and the monitoring information recording module 50, and is used for displaying the toxic and harmful gas parameter information and the monitoring information.

The embodiment of the utility model provides an in, display module 60 sets up the entry position in confined space, shows poisonous and harmful gas's concentration information in the confined space in real time, if there is certain poisonous and harmful gas concentration among them to exceed standard, display module 60 distinguishes through showing the colour and shows unusual information salient, informs the actual air condition in the relevant personnel confined space in scene. On the other hand, when the administrator extracts the alarm information, the administrator can directly check the alarm information through the display module 60, the display module 60 displays the recorded alarm time, alarm level, portrait information of suspicious personnel and the operation record of alarm information removing, and the administrator visually screens the used alarm information within a period of time, so that later-stage management is facilitated.

In a possible implementation mode, operation is started in a certain limited space, the limited space entrance detection device arranged at the entrance position is opened, in the operation process, the concentration of sulfur dioxide monitored by the sulfur dioxide concentration sensor arranged in the limited space exceeds a preset safety threshold value to cause damage to human bodies, the sulfur dioxide concentration sensor sends the concentration of sulfur dioxide to the processing module 30, and the processing module 30 arranges the sulfur dioxide concentration information and displays the information through the display module 60. At the moment, a person is temporarily scheduled to enter a limited space, an infrared sensor arranged at an entrance position monitors that a human body radiation wave band of the person is a preset wave band, the infrared sensor transmits information to a processing module 30 through a WiFi module, the processing module 30 judges that suspicious persons exist, continuously acquires abnormal information sent by the infrared sensor, tracks the moving track of the person, when the person approaches the entrance position and reaches the preset distance, the processing module 30 determines that the person has a tendency to enter the restricted space, generates an alarm command, and generates a voice alarm information instruction for wearing the gas mask according to the condition of the overhigh concentration of the sulfur dioxide in the limited space, on one hand, the alarm instruction is sent to the alarm module 40, after the alarm module 40 receives the alarm instruction, generating alarm information of a corresponding grade, and remotely pushing the alarm information to a mobile equipment end of a remote manager; on the other hand, the processing module 30 sends the alarm information to the monitoring information recording module 50, and the monitoring information recording module 50 records the alarm time, the alarm level and the portrait information of the person collected by the video detection device at the moment according to the instruction. After receiving the alarm information, the field management personnel confirm the identity of the personnel and supervise the personnel to finish wearing the gas mask, and then manually close the alarm device to allow the personnel to enter the limited space.

The above describes in detail optional implementation manners of embodiments of the present invention with reference to the accompanying drawings, however, the embodiments of the present invention are not limited to the details in the above implementation manners, and in the technical concept scope of the embodiments of the present invention, it is possible to perform various simple modifications on the technical solutions of the embodiments of the present invention, and these simple modifications all belong to the protection scope of the embodiments of the present invention.

It should be noted that the various features described in the above embodiments may be combined in any suitable manner without departing from the scope of the invention. In order to avoid unnecessary repetition, the embodiments of the present invention do not separately describe various possible combinations.

In addition, various different implementation manners of the embodiments of the present invention can be combined arbitrarily, and as long as it does not violate the idea of the embodiments of the present invention, it should be considered as the disclosure of the embodiments of the present invention.

Claims (10)

1. A confined space entrance monitoring device comprising:

the gas detection module is arranged in the limited space and used for detecting the toxic and harmful gas in the limited space in real time and generating corresponding toxic and harmful gas parameter information;

the sensing module is arranged at the entrance position of the limited space and used for generating triggering information when a moving object is identified;

the processing module is connected with the gas detection module and the induction module and used for generating a corresponding alarm instruction according to the toxic and harmful gas parameter information and the trigger information;

and the alarm module is arranged at the entrance position of the limited space, is connected with the processing module and is used for executing the alarm instruction.

2. The confined space inlet monitoring device of claim 1 wherein the gas detection module, the sensing module, the processing module and the alarm module each include a communication module for the transmission of information commands.

3. The confined space inlet monitoring device of claim 1 wherein the gas detection module includes a plurality of gas concentration sensors for the detection of a plurality of toxic and hazardous gases, respectively.

4. The confined space entrance monitoring device of claim 1, wherein the sensing module comprises an infrared sensor, a radar sensor and/or an image recognition sensor for life recognition and distance measurement.

5. The confined space entrance monitoring device of claim 1 wherein the alarm module includes an audible and visual alarm.

6. The confined space entrance monitoring device according to claim 5, wherein the audible and visual alarm is an audible and visual alarm capable of emitting different audible and visual alarms at different alarm levels.

7. The confined space entrance monitoring device of claim 1 further comprising:

and the instruction pushing module is connected with the processing module and used for pushing the alarm information to a mobile equipment end in communication connection with the limited space entrance monitoring device according to the alarm instruction.

8. The confined space entrance monitoring device of claim 1 further comprising:

the operation panel is used for generating a stop alarm instruction according to manual operation of a user;

the alarm module is also used for executing the alarm stopping instruction.

9. The confined space entrance monitoring device of claim 1 further comprising:

and the monitoring information recording module is connected with the processing module and used for recording monitoring information according to the alarm instruction.

10. The confined space entrance monitoring device of claim 9 further comprising:

and the display module is arranged at the entrance position of the limited space, is connected with the processing module and the monitoring information recording module, and is used for displaying the toxic and harmful gas parameter information and the monitoring information.

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