CN117116012A - Operation environment safety monitoring linkage alarm system for limited space - Google Patents

Abstract

The invention discloses a linkage alarm system for monitoring the safety of an operation environment in a limited space, which comprises the following components: the intelligent gas detection system comprises a composite gas detector, a behavior perception terminal, an intelligent box body, a field operation management terminal and a cloud platform; the composite gas detector is used for detecting whether toxic and harmful gas exists in the cable or the foundation pit or not and transmitting detection data to the field operation management terminal; the behavior perception terminal is used for ascertaining whether an operator goes into the well or not, and sending alarm information to the field operation management terminal when a dangerous situation occurs in the well; the field operation management terminal is used for receiving the data sent by the field operation management terminal and displaying and alarming; the problem of limited space operation safety supervision lack is solved, an effective supervision early warning mechanism is formed, and personnel safety is guaranteed.

Description

Operation environment safety monitoring linkage alarm system for limited space

Technical Field

The invention relates to the technical field of limited space operation, in particular to a linkage alarm system for operation environment safety monitoring in a limited space.

Background

In the operation process in the limited space, toxic choking accident events are frequently generated due to weak personnel safety consciousness, untimely operation safety regulation flow, untimely toxic and harmful gas leakage detection, insufficient oxygen concentration and the like, and serious threat is caused to the life safety of the operators in the limited space, and although all levels of management departments provide clear requirements of ventilation before monitoring and operation after the limited space operation, the operators in the field execution lack of effective supervision, and a limited space operation admittance and gas on-line monitoring and early warning system is not established yet, so that the safety risk existing in the field operation cannot be completely solved.

Disclosure of Invention

In view of the above technical problems, the present invention provides a linkage alarm system for monitoring operation environment safety in a limited space, the system comprising: the intelligent gas detection system comprises a composite gas detector, a behavior perception terminal, an intelligent box body, a field operation management terminal and a cloud platform;

the combined type gas detector and the behavior perception terminal transmit collected data to the intelligent box body through a long-distance radio Lora; the intelligent box body forwards the received data to the field operation management terminal; the field operation management terminal forwards the received data to the cloud platform;

the composite gas detector is used for detecting whether toxic and harmful gas exists in the cable or the foundation pit or not and transmitting detection data to the field operation management terminal in real time;

the behavior perception terminal is used for ascertaining whether an operator goes down the well or not and reporting data to the field operation management terminal in real time; when a dangerous situation occurs underground, alarm information is sent to a field operation management terminal;

the field operation management terminal is used for receiving the data sent by the field operation management terminal and displaying and alarming;

and the cloud platform is used for storing the data of the operation environment safety monitoring linkage alarm system.

Further, the remote radio Lora ensures the accuracy and instantaneity of data transmission from the combined gas detector and the behavior perception terminal to the intelligent box body by combining two modes of fixed-point transmission and broadcast transmission.

Further, the worker wears the behavior sensing terminal, whether the worker performs illegal operation or not is judged through the well descending height, and if the worker does not perform illegal well descending, the behavior sensing terminal performs alarm prompt according to the well descending height.

Further, if the worker wears the behavior-aware terminal in the foundation pit or the cable management, when the changes of the X-axis, the Y-axis, and the Z-axis of the gyroscope in the behavior-aware terminal satisfy the following conditions at the same time, the abnormal silence condition is established,

X1-X2<100

Y1-Y2<100

Z1-Z2<100

wherein X1 is the current X-axis direction change, X2 is the next X-axis direction change, Y1 is the current X-axis direction change, Y2 is the next X-axis direction change, Z1 is the current X-axis direction change, and Z2 is the next X-axis direction change.

The system monitors the operation environment when passing, discovers the dangerous state of the environment, alarms in time and informs the manager, and through the system, the problem of lack of safety supervision of the operation in the limited space is solved, an effective supervision and early warning mechanism is formed, the safety risk in the field operation process is solved, and the personnel safety is ensured.

Drawings

FIG. 1 is a system configuration diagram of a linkage alarm system for monitoring the safety of an operating environment in a limited space, provided by an embodiment of the invention;

FIG. 2 is a diagram of an example embodiment of a linked alarm system for operational environmental safety monitoring in a confined space in accordance with an embodiment of the present invention;

fig. 3 is a schematic diagram of fixed point emission of a Lora communication module according to an embodiment of the present invention;

fig. 4 is a schematic diagram of broadcast transmission of a Lora communication module according to an embodiment of the present invention;

fig. 5 is a schematic diagram of an ad hoc network according to an embodiment of the present invention;

FIG. 6 is a flow chart of operation of a linked alarm system for operational environmental safety monitoring in a confined space in accordance with an embodiment of the present invention.

Detailed Description

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The present invention may be embodied in many other forms than those herein described, and those skilled in the art will readily appreciate that the present invention may be similarly embodied without departing from the spirit or essential characteristics thereof, and therefore the present invention is not limited to the specific embodiments disclosed below.

As shown in fig. 1, the present invention provides a linkage alarm system for monitoring operation environment safety in a limited space, comprising: the intelligent gas detection system comprises a composite gas detector, a behavior perception terminal, an intelligent box body, a field operation management terminal and a cloud platform; the field operation management terminal is typically an intelligent PDA.

The intelligent box body is the communication core of the whole system. The combined type gas detector and the behavior perception terminal transmit collected data to the intelligent box body through a long-distance radio Lora; the intelligent box body forwards the received data to the field operation management terminal; the field operation management terminal forwards the received data to the cloud platform; the intelligent box body and the field operation management terminal can communicate through WIFI; the field operation management terminal and the cloud platform can communicate through 4G.

The composite gas detector is used for detecting whether toxic and harmful gas exists in the cable or the foundation pit or not and transmitting detection data to the field operation management terminal in real time;

the combined type gas detector has an oxygen starting self-calibration function, and if an oxygen sensor fails after starting, or equipment enters a high-altitude area, the oxygen content in the air is reduced due to the reduction of air pressure, so that the calibration can be performed. The first time is prompted to construction operators, and the problem can be rapidly checked. The problems of inaccurate gas sensors but lack of detection means can also be solved.

The behavior perception terminal is used for ascertaining whether an operator goes down the well or not and reporting data to the field operation management terminal in real time; when a dangerous situation occurs underground, alarm information is sent to a field operation management terminal; prompting personnel to evacuate.

The intelligent box is used as a core of data transmission, and mainly comprises data acquired by Lora communication receiving equipment and sent to the PDA through WIFI.

The Lora communication module is divided into fixed-point transmission and broadcast transmission. The data transmission mode of the fixed point transmission is shown in fig. 3, and the data transmission mode of the broadcast transmission is shown in fig. 4. The fixed point transmission is needed to know the address and the channel of the receiver, the data can be accurately transmitted to the receiver only if the target address and the target channel are clear, the message is not received by the inconsistent address and channel, and the mutual interference between signals can be prevented by adopting the fixed point transmission, so that the accuracy of the data is ensured; and the broadcast transmission only needs to transmit data under the same channel, any device can receive the message no matter whether the addresses are the same or not, so that the data can be transmitted to the device at the same time, and the real-time property of the data is ensured. The invention combines two transmitting modes of fixed-point transmitting and broadcasting transmitting, thereby ensuring the accuracy and real-time property of data.

Because the equipment is too far away from the intelligent box body or the interference of the field environment causes the failure information of signal transmission among the equipment, each equipment can realize the function of transferring signals through the ad hoc network technology, when a certain equipment is too far away from the intelligent box body, the equipment can automatically find the nearest behavior sensing terminal, and the signal is transferred through the behavior sensing terminal, so that the ad hoc network technology is realized, as shown in fig. 5.

And the field operation management terminal mainly receives data sent by the intelligent box body, and displays and alarms.

In general, an intelligent PDA is used as a site operation management terminal. After the equipment is connected through the PDA, if toxic gas is detected through the gas detector to start alarming, the gas detector can timely report alarming information to the PDA, and the PDA can broadcast dangerous information to the behavior sensing terminal in operation through the intelligent box body. If only the behavior sensing terminal works at the bottom of the well, if one behavior sensing terminal detects toxic gas, the behavior sensing terminal can timely transmit alarm information to the PDA, and then the alarm information is broadcast to other behavior sensing terminals in operation, so that the timely transmission of the alarm information is ensured, and the safety of operators is ensured.

The cloud platform is used for storing data to a background server through a 4G network.

The embodiment of the linkage alarm system for monitoring the safety of the operation environment in the limited space is shown in fig. 2, and the main operation flow is shown in fig. 6.

(1) When an operator needs to operate in the foundation pit, the air content at the bottom of the well needs to be tested through the composite gas detector, and the operator can be allowed to go into the well if no toxic or harmful gas is generated, and the behavior sensing terminal needs to be worn before the operator goes into the well.

Whether personnel illegal operation is judged through the well descending height, if the personnel illegal operation is not allowed to be in the well privately, the equipment can judge the well descending height of the personnel according to the height, and accordingly alarming is carried out.

H3＝H2-H1

Wherein, the height of the well is H1, the height of the well is H2, the height difference is H3, and the unit is meter.

(2) When a worker does not wear the behavior perception terminal according to the requirement, the equipment can detect abnormal silence of the worker, so that an alarm is given, and the manager is prompted that the worker does not wear the equipment, so that management of the worker is realized. According to the actions of the personnel, the change of the gyroscope in the X axis, the Y axis and the Z axis can be judged. If the behavior sensing terminal is in the foundation pit or the cable duct, the changes of the X axis, the Y axis and the Z axis simultaneously meet the following conditions, and the abnormal silence condition is met.

X1-X2 < 100 (1)

Y1-Y2 < 100 (2)

Z1-Z2 < 100 (3)

Wherein X1 is the current X-axis direction change, and X2 is the next X-axis direction change. Y1 is the current X-axis direction change, and Y2 is the next X-axis direction change. Z1 is the current X-axis direction change, and Z2 is the next X-axis direction change.

The invention provides a linkage alarm system for monitoring the safety of the operation environment in a limited space, which is used for timely monitoring the operation environment, finding out the dangerous state of the environment and timely alarming and informing a manager.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention and not for limiting the same, and although the present invention has been described in detail with reference to the above embodiments, it should be understood by those skilled in the art that modifications and equivalents may be made to the specific embodiments of the present invention without departing from the spirit and scope of the present invention, and it should be covered by the scope of the claims of the present invention.

Claims (4)

1. A system for operational environmental safety monitoring and linkage warning in a confined space, comprising: the intelligent gas detection system comprises a composite gas detector, a behavior perception terminal, an intelligent box body, a field operation management terminal and a cloud platform;

the combined type gas detector and the behavior perception terminal transmit collected data to the intelligent box body through a long-distance radio Lora; the intelligent box body forwards the received data to the field operation management terminal; the field operation management terminal forwards the received data to the cloud platform;

the composite gas detector is used for detecting whether toxic and harmful gas exists in the cable or the foundation pit or not and transmitting detection data to the field operation management terminal in real time;

the behavior perception terminal is used for ascertaining whether an operator goes down the well or not and reporting data to the field operation management terminal in real time; when a dangerous situation occurs underground, alarm information is sent to a field operation management terminal;

the field operation management terminal is used for receiving the data sent by the field operation management terminal and displaying and alarming;

and the cloud platform is used for storing the data of the operation environment safety monitoring linkage alarm system.

2. The system of claim 1, wherein the remote radio Lora is configured to combine both fixed point transmission and broadcast transmission to ensure accuracy and real-time data transfer from the composite gas detector and the behavior-aware terminal to the intelligent cabinet.

3. The system according to claim 1, wherein the operator wears the behavior sensing terminal, judges whether the operator is illegal to operate by the well-descending height, and if the operator is unauthorized to descend, the behavior sensing terminal gives an alarm according to the well-descending height.

4. The system of claim 1, wherein if the worker wears the behavior-aware terminal in a foundation pit or cable management, the abnormal silence condition is satisfied when the changes in the X-axis, Y-axis, Z-axis of the gyroscopes in the behavior-aware terminal satisfy the following conditions at the same time,

X1-X2<100

Y1-Y2<100

Z1-Z2<100

wherein X1 is the current X-axis direction change, X2 is the next X-axis direction change, Y1 is the current X-axis direction change, Y2 is the next X-axis direction change, Z1 is the current X-axis direction change, and Z2 is the next X-axis direction change.