Security detection method and system

Abstract

The invention discloses a safety detection method and system, and the method comprises the steps: switching a current state from a detection state to a triggering state through a target probe assembly in probe assemblies when the triggering of a vibration event in a pipeline is detected, generating a vibration message, and transmitting the vibration message to a processing terminal; a vibration message sent by a target probe assembly is received through a processing terminal, whether an effective vibration event exists currently or not is determined based on the vibration message, if yes, corresponding vibration safety response measures are executed, and the vibration safety response measures at least comprise sending a wave recording broadcast to each probe assembly; and responding to the wave recording broadcast through each probe assembly, switching the current state into a wave recording state, collecting vibration waveform data, and uploading the vibration waveform data to a processing terminal. According to the technical scheme, real-time sensing and accurate identification of environmental emergencies are efficiently achieved at low cost, and the security and protection efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of pipeline monitoring, and in particular, to a safety detection method and system. Background Art

[0002] Long-distance oil and gas pipelines are national energy infrastructure and play an important role and significance in the fields of national economy and energy security. Long-distance oil and gas pipelines have a wide distribution range and are typical linear projects. Inevitably, they have to cross areas with high mountains and deep valleys, steep terrains, and various artificial structures. Compared with buried pipelines, the crossing pipelines pass over obstacles in an overhead installation manner, and the pipelines are exposed, making them vulnerable to various environmental accidental loads such as rockfalls, landslides, wind loads, earthquakes, and blasting construction. They have become a weak link in the pipeline safety protection system. If the monitoring and early warning and protection measures fail to be in place in a timely manner, it is very likely that the pipeline will deform, break, and even cause catastrophic consequences such as leakage and explosion, resulting in heavy casualties and economic losses.

[0003] For a long time, the safety monitoring of long-distance oil and gas pipelines in China mainly relied on manual regular inspections, which had low efficiency and were easily interfered by the outside world. In recent years, the distributed optical fiber sensing technology has developed rapidly and has been applied to the safety monitoring of buried oil and gas pipelines. However, this technology system is huge, the equipment cost is high, and the subsequent testing and maintenance processes are complex and cumbersome, bringing certain challenges to practical applications.

[0004] Therefore, how to innovatively achieve low-cost, high-efficiency, and accurate monitoring of sudden loads in the overhead pipeline environment to improve the overall security and protection efficiency has become a key technical problem that needs to be solved urgently by technical personnel in this field. Summary of the Invention

[0005] The present invention provides a safety detection method and system, which can efficiently realize the real-time perception and accurate identification of environmental emergencies at a relatively low cost and improve the security and protection efficiency.

[0006] In a first aspect, an embodiment of the present disclosure provides a safety detection method, which is applied to a safety detection system. The safety detection system includes a processing terminal and a plurality of probe components. The processing terminal and each probe component are connected by a multi-core cable. The method includes:

[0007] When a vibration event in the pipeline is detected and triggered by the target probe component in the probe components, the current state is switched from the detection state to the trigger state, a vibration message is generated, and the vibration message is sent to the processing terminal;

[0008] Through the processing terminal, receive the vibration message sent by the target probe assembly, and determine whether there is an effective vibration event currently based on the vibration message. If so, execute corresponding vibration safety response measures, and the vibration safety response measures at least include sending a waveform recording broadcast to each probe assembly;

[0009] Through each probe assembly, in response to the waveform recording broadcast, switch the current state to the waveform recording state, collect vibration waveform data, and upload the vibration waveform data to the processing terminal.

[0010] In a second aspect, an embodiment of the present disclosure provides a safety detection system for executing the method in the first aspect. The system includes a processing terminal and a plurality of probe assemblies, and the processing terminal and each probe assembly are connected through a multi-core cable;

[0011] The probe assembly is configured to change to a target probe assembly when a vibration event in the pipeline is detected and triggered, switch the current state from the detection state to the trigger state, generate a vibration message, and send the vibration message to the processing terminal;

[0012] The processing terminal is configured to receive the vibration message sent by the target probe assembly, and determine whether there is an effective vibration event currently based on the vibration message. If so, execute corresponding vibration safety response measures, and the vibration safety response measures at least include sending a waveform recording broadcast to each probe assembly;

[0013] The probe assembly is configured to, in response to the waveform recording broadcast, switch the current state to the waveform recording state, collect vibration waveform data, and upload the vibration waveform data to the processing terminal.

[0014] A safety detection method and system according to an embodiment of the present invention include, through a target probe assembly in the probe assembly, when a vibration event in the pipeline is detected and triggered, switching the current state from the detection state to the trigger state, generating a vibration message, and sending the vibration message to the processing terminal;

[0015] Through the processing terminal, receive the vibration message sent by the target probe assembly, and determine whether there is an effective vibration event currently based on the vibration message. If so, execute corresponding vibration safety response measures, and the vibration safety response measures at least include sending a waveform recording broadcast to each probe assembly;

[0016] Through each probe assembly, in response to the waveform recording broadcast, switch the current state to the waveform recording state, collect vibration waveform data, and upload the vibration waveform data to the processing terminal. The above technical solution can efficiently realize real-time perception and accurate identification of environmental emergencies at low cost and improve the security prevention efficiency.

[0017] It should be understood that the content described in this section is not intended to identify the key or important features of the embodiments of the present invention, nor is it used to limit the scope of the present invention. Other features of the present invention will become readily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0019] Figure 1 is a flowchart of a security detection method provided in Embodiment 1 of the present invention;

[0020] Figure 2 is a deployment schematic diagram of a security detection system provided in Embodiment 2 of the present invention;

[0021] Figure 3a is a structural schematic diagram of a probe assembly provided in Embodiment 2 of the present invention;

[0022] Figure 3b is another structural schematic diagram of a probe assembly provided in Embodiment 2 of the present invention;

[0023] Figure 3c is yet another structural schematic diagram of a probe assembly provided in Embodiment 2 of the present invention;

[0024] Figure 4a is a structural schematic diagram of a locking assembly provided in Embodiment 2 of the present invention;

[0025] Figure 4b is another structural schematic diagram of a locking assembly provided in Embodiment 2 of the present invention;

[0026] Figure 4c is yet another structural schematic diagram of a locking assembly provided in Embodiment 2 of the present invention;

[0027] Figure 5 is a structural schematic diagram of a security detection system provided in Embodiment 2 of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0028] To enable those skilled in the art to better understand the solution of the present invention, the following will clearly and completely describe the technical solution in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0029] It should be noted that the terms "first", "second", "target", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and do not necessarily need to be used to describe a specific order or sequence. It should be understood that such data can be interchanged under appropriate circumstances so that the embodiments of the present invention described here can be implemented in an order other than those illustrated or described here. In addition, the terms "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device comprising a series of steps or units does not necessarily have to be limited to those steps or units clearly listed, but may include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0030] Embodiment 1

[0031] Figure 1 It is a flowchart of a security detection method provided by Embodiment 1 of the present invention. This embodiment is applicable to the situation of real-time security detection of the pipeline environment, and this method can be executed by a security detection system. The security detection system includes a processing terminal and a plurality of probe components, and the processing terminal and each probe component are connected by a multi-core cable.

[0032] As Figure 1 shown, the method includes:

[0033] S101. When a vibration event in the pipeline is detected by the target probe component in the probe component, switch the current state from the detection state to the trigger state, generate a vibration message, and send the vibration message to the processing terminal.

[0034] In this embodiment, the probe assembly can be understood as a terminal device for monitoring the vibration condition in the pipeline environment, which is a digital three-component vibration acceleration probe. The target probe assembly can be understood as the probe assembly triggered by detecting a vibration event in the pipeline. A vibration event can be understood as an event of abnormal vibration in the pipeline. The current state can be understood as the working state of the probe assembly, including the detection state, the trigger state, and the wave recording state. Among them, the detection state is the working state of real-time detecting the vibration acceleration in the pipeline, the trigger state is the silent state waiting for instructions from the processing terminal, and the wave recording state is the working state of recording the pipeline based on the instructions from the processing terminal. The vibration message can be understood as the relevant information used to characterize the vibration condition monitored by the target probe assembly, at least including vibration data, the probe number of the target probe assembly, as well as the trigger identifier and trigger time of the vibration event. The vibration data can specifically characterize the vibration condition, the probe number can characterize the vibration position, the trigger identifier can characterize the possible abnormal condition, and the trigger time can characterize the moment when the vibration occurs. The processing terminal can be understood as a processing device connected to each probe assembly.

[0035] Specifically, each probe assembly works on the pipeline and continuously monitors the vibration acceleration data in the pipeline. If the vibration acceleration data collected by a certain probe assembly meets certain conditions and it is determined that there is a current vibration event, then this probe assembly is determined as the target probe assembly. When it is detected that the vibration event in the pipeline is triggered, the current state of the target probe assembly is switched from the detection state to the trigger state, and the continuous monitoring of the vibration event in the pipeline is paused. A vibration message is generated based on the collected vibration acceleration data, the probe number of the target probe assembly, as well as the trigger identifier and trigger time of the vibration event, and the vibration message is sent to the processing terminal through the data transmission bus in the multi-core cable.

[0036] S102. Through the processing terminal, receive the vibration message sent by the target probe assembly, and determine whether there is an effective vibration event currently based on the vibration message. If so, execute the corresponding vibration safety response measures. The vibration safety response measures at least include sending a wave recording broadcast to each probe assembly.

[0037] In this embodiment, an effective vibration event can be understood as a vibration event that determines that there is indeed abnormal vibration in the pipeline. The vibration safety response measure can be understood as a further safety measure taken based on the effective vibration event, including at least sending a waveform recording broadcast to each probe component to instruct each probe component to enter the waveform recording state from the current state; the vibration safety response measure can also include generating an alarm message and sending the alarm message to the associated alarm device to cause the alarm device to give an audible and visual alarm; generating monitoring frequency adjustment information and sending the monitoring adjustment information to the associated monitoring device to cause the monitoring device to adjust the sampling frequency, where the monitoring frequency adjustment information can be understood as information used to instruct the monitoring device to adjust the monitoring frequency, such as an encrypted monitoring frequency indication, and the monitoring device can be other types of monitoring devices related to the pipeline, such as a strain tilt monitoring device; generating an emergency event report information and uploading the emergency event report information to the cloud server to enable the cloud server to remotely monitor. The emergency event report information can be understood as an alarm text message used to prompt the cloud server that there is an effective vibration event in the pipeline to ensure the timely transmission of information and the remote monitoring of the cloud.

[0038] Specifically, after receiving the vibration message sent by the target probe component, the processing terminal determines whether there is an effective vibration event currently based on the number of received vibration messages and the content of each vibration message. If not, a continue operation instruction is generated and sent to the target probe component to cause the target probe component to return from the triggered state to the detection state; if so, a waveform recording broadcast is sent to each associated probe component to instruct all probe components to enter the waveform recording state and perform pipeline waveform recording. If so, an alarm message can also be generated and sent to the associated alarm device to cause the alarm device to give an audible and visual alarm; generating monitoring frequency adjustment information and sending the monitoring adjustment information to the associated monitoring device to cause the monitoring device to adjust the sampling frequency; generating an emergency event report information and uploading the emergency event report information to the cloud server to enable the cloud server to remotely monitor.

[0039] S103. Through each probe component, in response to the waveform recording broadcast, switch the current state to the waveform recording state, collect vibration waveform data, and upload the vibration waveform data to the processing terminal.

[0040] In this embodiment, the waveform recording broadcast can be understood as a broadcast message used to instruct the execution of waveform recording operations. The vibration waveform data can be understood as the vibration waveform information of the corresponding acquisition area in the pipeline collected by each probe component.

[0041] Specifically, if there is an effective vibration event currently, each probe assembly responds to the wave recording broadcast sent by the processing terminal, and switches its current state to the wave recording state (the target probe assembly switches from the triggered state to the wave recording state, and other probe assemblies in the system except the target probe assembly switch from the detection state to the wave recording state). Each probe assembly performs pipeline wave recording operations, acquires corresponding vibration waveform data, stores the vibration waveform data in the local non-volatile memory, and after the wave recording ends, switches the current state from the wave recording state to the detection state, and uploads the vibration waveform data stored in the local non-volatile memory to the processing terminal.

[0042] A safety detection method provided by an embodiment of the present invention includes, through a target probe assembly in a probe assembly, when detecting that a vibration event in a pipeline is triggered, switching the current state from the detection state to the triggered state, generating a vibration message, and sending the vibration message to a processing terminal; through the processing terminal, receiving the vibration message sent by the target probe assembly, and determining whether there is an effective vibration event currently based on the vibration message. If so, performing corresponding vibration safety response measures, and the vibration safety response measures at least include sending a wave recording broadcast to each probe assembly; through each probe assembly, in response to the wave recording broadcast, switching the current state to the wave recording state, acquiring vibration waveform data, and uploading the vibration waveform data to the processing terminal. The above technical solution has low deployment and operation costs and high recognition accuracy, and can provide an effective technical means for the rapid emergency disposal of overhead pipeline environmental emergencies; it can autonomously complete the real-time perception and accurate identification of environmental emergencies on site, and has a low risk of missed reports and false alarms.

[0043] As a first alternative embodiment of this embodiment, the method further includes:

[0044] Through the processing terminal, acquiring the vibration waveform data transmitted by each probe assembly and aggregating them to form a vibration waveform data set, and uploading the vibration waveform data set to the cloud server.

[0045] In this embodiment, the vibration waveform data set can be understood as a set of vibration waveform data. The cloud server can be understood as an external communication device interconnected with the safety detection system.

[0046] Specifically, the processing terminal acquires the vibration waveform data fed back by each probe assembly through the data transmission bus, stores the received vibration waveform data in the local memory, and after completing the reception of the vibration waveform data sent by all probe assemblies, aggregates these vibration waveform data to form a vibration waveform data set, and uploads the vibration waveform data set to the cloud server to provide data support for subsequent fault analysis and early warning optimization.

[0047] As a second alternative embodiment of this embodiment, when detecting that a vibration event is triggered, switching the current state from the detection state to the triggered state and generating a vibration message includes:

[0048] S1011. In the detection state, obtain and store the vibration data in the pipeline. If the vibration data is greater than the vibration threshold, determine that a vibration event has occurred, switch the current state from the detection state to the trigger state, and suspend the monitoring of the vibration event.

[0049] In this embodiment, the vibration data can be understood as the data obtained by the target probe assembly, which is the relevant data of the vibration acceleration signal in digital signal format. The vibration threshold can be understood as a preset value. Once the vibration threshold is exceeded, it indicates that a vibration event is determined on the probe assembly side.

[0050] Specifically, in the detection state, the target probe assembly continuously performs the acquisition of the vibration acceleration signal in the pipeline. The target probe assembly has a built-in vibration event trigger algorithm, such as the short-term average / long-term average algorithm. If the ratio of the short-term average (STA) / long-term average (LTA) of the acquired vibration acceleration signal is greater than the set vibration threshold, it is determined on the target probe assembly side that a current vibration event has occurred. The current state is switched from the detection state to the trigger state, and the monitoring of the vibration event is suspended to ensure that each probe assembly can independently and sensitively capture the vibration event. It can be understood that a relatively low value (less than a certain threshold) is set for the vibration threshold to avoid missed detection, and the specific value is set based on actual requirements, and this embodiment does not limit it.

[0051] It can be understood that the probe assembly adopts a first-in-first-out (FIFO) circular storage mechanism to store the acquired vibration acceleration signal in the circular buffer in real time to ensure the effective management and fast access of the data.

[0052] S1012. Generate a vibration message based on the vibration data, the probe number of the target probe assembly, and the trigger identifier and trigger time of the vibration event, and transmit the vibration message to the processing terminal.

[0053] In this embodiment, the vibration acceleration data, probe number, trigger identifier, and trigger time of the vibration event acquired by the target probe assembly are packed to form a vibration message, and the vibration message is transmitted to the processing terminal through the data transmission bus in the multi-core cable.

[0054] S1013. If no feedback information from the processing terminal is received within the set time, switch the current state from the trigger state back to the detection state and re-execute the monitoring of the vibration event.

[0055] In this embodiment, the set time can be understood as the maximum duration for which the target probe assembly is in the triggered state. The feedback information can be understood as the information fed back by the processing terminal, including the wave recording broadcast effectively related to the vibration event and the continue operation instruction ineffectively related to the vibration event. The wave recording broadcast instructs all probe assemblies to switch the current state to the wave recording state, and the continue operation instruction instructs the target probe assembly to switch the current state back to the detection state.

[0056] Specifically, if a wave recording broadcast fed back by the terminal device is received within the set time, the current state is switched from the triggered state to the wave recording state, and the pipeline wave recording operation is executed; if a continue operation instruction fed back by the terminal device is received within the set time, the current state is switched from the triggered state back to the detection state, and the monitoring of the vibration event is re-executed; if the feedback information from the processing terminal is not received within the set time, when the set time arrives, the current state is switched from the triggered state back to the detection state, and the monitoring of the vibration event is re-executed.

[0057] As the third alternative embodiment of this embodiment, it is determined whether there is a valid vibration event currently based on the vibration message. If so, the corresponding vibration safety response measures are executed, including:

[0058] S1021. Determine whether there is a valid vibration event currently based on the number of received vibration messages and the content of each vibration message.

[0059] In this embodiment, since there may be multiple probe assemblies in the pipeline as the target probe assembly, correspondingly, the terminal device will receive multiple vibration messages. The terminal device integrates a vibration event joint discrimination algorithm to determine whether there is a valid vibration event currently based on the number of vibration messages, the vibration position corresponding to the vibration message (determined based on the probe number), and the vibration time (the triggering time of the vibration event). For example, if the number of current vibration messages exceeds a certain number threshold, and there are multiple consecutive vibration positions where probe-side vibration events occur at the same time or at a similar time, it is determined that there is a valid vibration event currently on the processing terminal side; otherwise, it is determined that there is no valid vibration event currently, a continue operation instruction is formed, and the continue operation instruction is fed back to each target probe assembly to instruct the probe assembly to switch the current state from the triggered state back to the detection state.

[0060] S1022. If so, execute the corresponding vibration safety response measures.

[0061] Specifically, if there is an effective vibration event, a wave recording broadcast is sent to each probe component to instruct each probe component to perform pipeline wave recording operations; an alarm message is generated and sent to the associated alarm device so that the alarm device emits an audible and visual alarm; monitoring frequency adjustment information is generated and sent to the associated monitoring device so that the monitoring device adjusts the sampling frequency; an emergency report information is generated and uploaded to the cloud server so that the cloud server remotely monitors.

[0062] Embodiment 2

[0063] Figure 2 FIG. is a deployment schematic diagram of a safety detection system provided in Embodiment 2 of the present invention. Figure 2 It includes a front view and a side view of the pipeline, as Figure 2 shown. The safety detection system is deployed on the pipeline. The pipeline is composed of a pipeline wall 1 and a pipeline support 7. A pipeline detection area is provided on the pipeline wall 1, and a plurality of monitoring sections are provided on the pipeline detection area. The safety detection system includes a plurality of probe components 2, and each probe component 2 is arranged on a corresponding monitoring section. The layout distance between adjacent probe components 2 is not limited, and together they form a linearly distributed vibration acceleration observation array to observe the acceleration response of the pipeline during a sudden environmental event in real time; the probe component 2 is fixed on the pipeline wall 1 through a locking component 3 and a steel belt 4 to achieve full coupling with the cross-section pipeline wall; each adjacent two probe components 2 are connected by a multi-core cable 5 with watertight joints at both ends, and each probe component 2 is also connected to a processing terminal 6 by a multi-core cable 5 with watertight joints at both ends. The processing terminal 6 is arranged on the pipeline support 7.

[0064] Figure 3a FIG. is a structural schematic diagram of a probe component provided in Embodiment 2 of the present invention; Figure 3b FIG. is another structural schematic diagram of a probe component provided in Embodiment 2 of the present invention; Figure 3c FIG. is still another structural schematic diagram of a probe component provided in Embodiment 2 of the present invention; as Figure 3a 、 Figure 3b and Figure 3cAs shown in the figure, the probe assembly 2 is composed of a lid screw 21, a lid 22, a box body 23, a watertight connector seat 24, an adapter pad 25, a three-axis micro-electro-mechanical systems (MEMS) accelerometer integrated circuit board 26, a screw 27, and a guide groove 28. Among them, the stainless-steel box body 23 and the lid 22 are fixed by the lid screw 21 to form a sealed cuboid chamber for encapsulating the three-axis MEMS accelerometer integrated circuit board 26. The stainless-steel material can provide the structural firmness and durability, and can protect the internal electronic components in the harsh field environment. Watertight connector seats 24 are arranged on both sides of the stainless-steel box body 23 for connecting with a multi-core cable 5 with watertight connectors at both ends. Four cores of the multi-core cable 5 are used. Among them, two cores are power supply cables for powering each level of the probe assembly 2; two cores are data transmission buses for data transmission between each level of the probe assembly 2 and the processing terminal 6; the three-axis MEMS accelerometer integrated circuit board 26 is in a long strip shape and is installed inside the stainless-steel box body 23, and is sealed and waterproof by epoxy resin to improve the durability and waterproof performance of the circuit board 26; X / Y / Z three-component direction identification marks are arranged on the outer wall of the stainless-steel box body 23, corresponding to the X / Y / Z axes of the three-axis MEMS accelerometer integrated circuit board 26 respectively; the bottom of the stainless-steel box body 23 is connected to the adapter pad 25 by the screw 27, and the adapter pad 25 can be directly replaced according to different pipelines; the adapter pad 25 is used to adapt to pipelines with different diameters, and the arc surface under the pad corresponds to pipelines with different diameters, and there are applicable pipe diameter markings on it; the adapter pad 25 is provided with a guide groove 28, and the steel strip 4 passes through the middle of it, and the probe assembly 2 is fixed on the pipeline wall 1 through the locking assembly 3.

[0065] Figure 4a It is a schematic structural diagram of a locking assembly provided in the second embodiment of the present invention; Figure 4b It is a schematic structural diagram of another locking assembly provided in the second embodiment of the present invention; Figure 4c It is a schematic structural diagram of yet another locking assembly provided in the second embodiment of the present invention; as Figure 4a 、 Figure 4b and Figure 4cAs shown in the figure, the locking assembly 3 is composed of an aluminum alloy seat 31, a pawl rotating shaft 32, a notch 33, a pawl 34, a ratchet wheel 35, a ratchet wheel rotating shaft 36 and a winding groove 37, and cooperates with the steel belt 4 to quickly install and fix the probe assembly 2. Among them, the ratchet wheel 35 is welded to the ratchet wheel rotating shaft 36. The end of the ratchet wheel rotating shaft 36 is provided with an internal hexagonal hole, and a winding groove 37 is opened in the middle. The steel belt 4 is inserted into the winding groove 37, and an internal hexagonal wrench is used to drive it to rotate counterclockwise, and the steel belt 4 is wound onto the shaft, so as to tighten the steel belt; the pawl 34 and the pawl rotating shaft 32 are welded together and can rotate around the hole on the aluminum alloy seat 31; the pawl 34 cooperates with the teeth on the ratchet wheel 35 to prevent the ratchet wheel 35 from rotating reversely; the notch 33 is used to fix the other section of the steel belt 4, and the steel belt 4 passes through from above, and the end is pressed below.

[0066] Figure 5 It is a schematic structural diagram of a safety detection system provided in the second embodiment of the present invention. As Figure 5 shown, the safety detection system includes a processing terminal 6 and a plurality of probe assemblies 2. The processing terminal 6 and each probe assembly 2 are connected by a multi-core cable 5;

[0067] The probe assembly 2 is used to change to a target probe assembly when a vibration event in the pipeline is detected and triggered, switch the current state from the detection state to the trigger state, generate a vibration message, and send the vibration message to the processing terminal 6;

[0068] The processing terminal 6 is used to receive the vibration message sent by the target probe assembly, and determine whether there is an effective vibration event currently based on the vibration message. If so, execute corresponding vibration safety response measures. The vibration safety response measures at least include sending a wave recording broadcast to each probe assembly 2;

[0069] The probe assembly 2 is used to respond to the wave recording broadcast, switch the current state to the wave recording state, collect vibration waveform data, and upload the vibration waveform data to the processing terminal 6.

[0070] In this embodiment, each probe assembly 2 operates on the pipeline, constantly monitoring the vibration acceleration data inside the pipeline. If the vibration acceleration data collected by a certain probe assembly meets certain conditions and it is determined that there is a current vibration event, then this probe assembly is determined as the target probe assembly. When it is detected that the vibration event inside the pipeline is triggered, the current state of the target probe assembly is switched from the detection state to the trigger state, and the continuous monitoring of the vibration event inside the pipeline is paused. Based on the collected vibration acceleration data, the probe number of the target probe assembly, as well as the trigger identifier and trigger time of the vibration event, a vibration message is generated, and the vibration message is sent to the processing terminal 6 through the data transmission bus in the multi-core cable. After receiving the vibration message sent by the target probe assembly, the processing terminal 6 determines whether there is a valid vibration event currently based on the number of received vibration messages and the content of each vibration message. If not, a continue operation instruction is generated and sent to the target probe assembly to make the target probe assembly resume from the trigger state to the detection state; if there is, a recording broadcast is sent to each associated probe assembly 2 to instruct all probe assemblies 2 to enter the recording state and perform pipeline recording. If there is, an alarm message can also be generated and sent to the associated alarm device to make the alarm device emit an audible and visual alarm; a monitoring frequency adjustment message is generated and sent to the associated monitoring device to make the monitoring device adjust the sampling frequency; an emergency event report message is generated and uploaded to the external communication device to enable the external communication device to remotely monitor. If there is a valid vibration event currently, each probe assembly 2 responds to the recording broadcast sent by the processing terminal, and switches the current state to the recording state (the target probe assembly switches from the trigger state to the recording state, and other probe assemblies in the system except the target probe assembly switch from the detection state to the recording state). Each probe assembly 2 performs the pipeline recording operation, collects the corresponding vibration waveform data, stores the vibration waveform data in the local memory, and at the same time, uploads the vibration waveform data to the processing terminal 6.

[0071] Optionally, the three-axis MEMS accelerometer integrated circuit board 26 inside the probe assembly 2 integrates a collection module 261, a microcontroller 262, a first communication module 263, and a power supply module 264. The probe assembly 2 is respectively connected to the multi-core cable 5 through the first communication module 263 and the power supply module 264, and the microcontroller 262 is respectively connected to the collection module 261, the first communication module 263, and the power supply module 264;

[0072] The collection module 261 is used to collect the vibration acceleration signal of the pipeline cross-section and send the vibration acceleration signal to the microcontroller 262;

[0073] A microcontroller 262 is used to acquire vibration acceleration signals, store the vibration acceleration signals in a circular buffer, and determine whether there is a current vibration event based on the vibration acceleration signals. If so, it switches the current state from the detection state to the trigger state, generates a vibration message, and sends the vibration message to the processing terminal through the first communication module 263;

[0074] A power supply module 264 is used to supply power to the microcontroller 262.

[0075] In this embodiment, the microcontroller 262 is a single-chip microcomputer (Microcontroller Unit, MCU) microcontroller and a storage module. Among them, the microcontroller 262 is composed of an STM32 single-chip microcomputer, a memory, and its peripheral circuits, and controls the acquisition module 261 and the first communication module 263 to independently complete the reception and response of host computer instructions, the acquisition, triggering, recording, and uploading of three-component acceleration signals. The acquisition module 261 is composed of an ultra-low noise density three-axis MEMS acceleration sensor and a pre-amplifier circuit, acquires the vibration acceleration signal of the pipeline cross-section, converts it into a digital quantity, and sends it to the microcontroller 262. The X / Y / Z axes of the three-axis MEMS acceleration sensor are set in a Cartesian coordinate system. The first communication module 263 is connected to the data transmission bus (2 cores) in the multi-core cable 5, and is used to realize data interaction between the microcontroller 262 and the processing terminal 6. The power supply module 264 is connected to the power supply cable (2 cores) in the multi-core cable 5 to provide wide-voltage power supply for the microcontroller 262.

[0076] In this embodiment, after the probe assembly 2 is powered on and started through the power supply module 264, it defaults to the initial detection state, and the vibration event trigger algorithm in the microcontroller 262 is activated accordingly, continuously monitoring for vibration events. It can be understood that in the detection state, the probe assembly 2 does not send any trigger signals or vibration acceleration data to the processing terminal 6, and remains silent waiting for a vibration event to trigger.

[0077] Optionally, the processing terminal 6 is composed of a processing terminal integrated circuit board 61 and its external packaging structure. The processing terminal integrated circuit board 61 includes a microprocessor 613, a data transmission module 611, and a power supply management module 612; the processing terminal is respectively connected to the multi-core cable 5 through the data transmission module 611 and the power supply management module 612, and the microprocessor 613 is respectively connected to the data transmission module 611 and the power supply management module 612;

[0078] The microprocessor 613 is used to acquire the vibration message transmitted by the probe assembly 2 through the data transmission module 611, and determine whether there is a current valid vibration event based on the vibration message. If so, execute the corresponding vibration safety response measures;

[0079] The power supply management module 612 is used to supply power to each probe assembly 2.

[0080] In this embodiment, the microprocessor 613 is composed of an STM32 single-chip microcomputer and its peripheral circuits, and controls the data transmission module 611 and the power supply management module 612. The data transmission module 611 is connected to one end of the data transmission bus (2 cores) in the multi-core cable through the peripheral bus port, and conducts data interaction with the multi-stage vibration probe array (multiple probe components 2) through the data transmission bus. The power supply management module 612 is connected to the power supply cable (2 cores) through the peripheral port, and provides wide-voltage power supply to the multi-stage vibration probe array (multiple probe components 2) through the power supply cable.

[0081] In this embodiment, the vibration event joint recognition algorithm in the microprocessor 613 continuously monitors the vibration messages. Once a vibration message sent by the target probe component is received, the recognition algorithm is immediately started to identify effective vibration events.

[0082] Furthermore, the processing terminal integrated circuit board 61 in the processing terminal 6 further includes a control panel 614, a second communication module 616, and a memory 615. The processing terminal is connected to an external communication device through the second communication module 616. The external communication device at least includes a cloud server. The control panel 614, the second communication module 616, and the memory 615 are all connected to the microprocessor 613;

[0083] The control panel 614 is used to indicate the working state of the processing terminal;

[0084] The memory 615 is used to store the vibration waveform data fed back by each probe component 2;

[0085] The second communication module 616 is used to transmit the emergency report information and the vibration waveform data composed of each vibration waveform data to the external communication device.

[0086] In this embodiment, the microprocessor 613 controls the second communication module 616 to receive and remotely transmit data, controls the memory 615 to store acceleration data, and controls the control panel 614 to indicate the working state of the processing terminal 6 and drive the vibration probe array to synchronously collect data. The control panel 614 is provided with a liquid crystal display screen, a power switch, a working indicator light, a transmission indicator light, a serial communication interface (such as RS232), a Universal Serial Bus (USB) interface, and an Ethernet interface. The memory 615 is selected as a large-capacity solid-state drive or a mounted Secure Digital Card (SD) card for storing the vibration acceleration data uploaded by the multi-stage vibration probe array. The second communication module is connected to external communication devices such as a far-field wireless communication module (such as a Fourth Generation (4G) module or a Fifth Generation (5G) module) and a 100M / 1000M Ethernet wired communication module through a peripheral port, and transmits the vibration acceleration data to the server through the external communication device. The external communication device itself can also be a cloud server.

[0087] An embodiment of the present invention proposes a safety detection system for automatically sensing environmental emergencies of overhead pipelines, which is composed of digital three-component vibration acceleration probe assemblies at several levels, locking assemblies, steel belts, multi-core cables, and processing terminals; the probe assemblies are quickly arranged at each monitoring section in the pipeline monitoring area through the locking assemblies to form a linearly distributed vibration acceleration observation array; each level of vibration probe is built with a vibration event triggering algorithm to sensitively capture abnormal vibration signals; the processing terminal integrates a multi-vibration event joint recognition algorithm to realize distributed fusion and collaborative work between multiple levels of probes and the processing terminal; innovatively integrating array-type vibration acceleration probe assemblies and distributed multi-source monitoring data fusion and recognition technologies, it can not only be quickly deployed and efficiently operated on-site for overhead pipelines, but also can autonomously complete real-time sensing and accurate recognition of environmental emergencies on-site. Compared with the prior art, the present invention combines the new generation of small-size, low-cost, low-power, and high-precision MEMS sensor technology with distributed multi-source data fusion technology to develop a safety detection system and method dedicated to automatically sensing and identifying environmental emergencies of overhead pipelines, presenting many advantages: from single point to array, the existing accidental load detection of oil and gas pipelines mostly adopts the arrangement method of single vibration sensors, resulting in scarce monitoring data and low recognition accuracy. In contrast, the present invention adopts an array-type arrangement of vibration acceleration probe assemblies (such as arranging 1 probe assembly every 3 meters), which can effectively solve the problems of scarce observation data and insufficient observation ability; from separate lines to a bus, the existing accidental load detection of oil and gas pipelines all adopts a separate line system mode, that is, each sensor is independently connected to a cable, resulting in high observation costs and cumbersome installation processes. Correspondingly, the present invention adopts a bus design method, and all vibration acceleration probe assemblies within the same monitoring point share a multi-core cable, with two cores for power supply and two cores for data transmission, which can effectively reduce the observation cost and simplify the installation process; from centralized to distributed, for traditional environmental emergency monitoring systems, their monitoring data needs to be uniformly transmitted to the central server, and the server centrally completes the recognition of emergencies. The above centralized data processing mode has high requirements for transmission bandwidth, server computing and storage capabilities, and concurrent processing software, which is not conducive to the rapid deployment and application of vibration acceleration sensor arrays, and wastes a large amount of communication and storage resources (emergencies are sporadic events, but the central server needs to receive, process, and store observation data 24 hours a day). In contrast, the present invention adopts a distributed fusion and collaborative work method between multiple levels of probe assemblies and the processing terminal. Each level of digital three-component vibration acceleration probe uses the built-in vibration event triggering algorithm to independently capture abnormal vibration events, and the processing terminal uses the multi-vibration event joint recognition algorithm to accurately recognize environmental emergencies on-site immediately, realizing the forward movement and intelligence of data processing, so that the vibration acceleration probe assembly does not need to upload invalid data when it is silent, and the processing terminal does not need to report to the central server when there is no abnormality, thereby greatly reducing the software and hardware requirements, significantly optimizing resource utilization, and providing strong technical support and guarantee for on-site immediate response when environmental emergencies occur.

[0088] It should be understood that the various forms of processes shown above can be used, with steps reordered, added or deleted. For example, the steps described in the present invention can be executed in parallel, sequentially or in different orders, as long as the desired results of the technical solution of the present invention can be achieved, and no limitation is imposed herein.

[0089] The above specific embodiments do not constitute a limitation on the protection scope of the present invention. Those skilled in the art should understand that various modifications, combinations, sub-combinations and substitutions can be made according to design requirements and other factors. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims

1. A security detection method, characterized in that, Applied to a security detection system, the security detection system includes a processing terminal and a plurality of probe components, and the processing terminal and each probe component are connected by a multi-core cable. The method includes: When a vibration event in the pipeline is detected and triggered by the target probe component in the probe components, switch the current state from the detection state to the trigger state, generate a vibration message, and send the vibration message to the processing terminal; Through the processing terminal, receive the vibration message sent by the target probe component, and determine whether there is an effective vibration event currently based on the vibration message. If so, execute the corresponding vibration security response measures, and the vibration security response measures at least include sending a waveform recording broadcast to each probe component; Through each probe component, in response to the waveform recording broadcast, switch the current state to the waveform recording state, collect vibration waveform data, and upload the vibration waveform data to the processing terminal.

2. The method according to claim 1, wherein When detecting the trigger of a vibration event, switching the current state from the detection state to the trigger state and generating a vibration message includes: In the detection state, obtain and store the vibration data in the pipeline. If the vibration data is greater than the vibration threshold, determine that a vibration event has occurred, switch the current state from the detection state to the trigger state, and pause the monitoring of the vibration event; Generate a vibration message based on the vibration data, the probe number of the target probe component, and the trigger identification and trigger time of the vibration event, and transmit the vibration message to the processing terminal; If the feedback information from the processing terminal is not received within the set time, switch the current state from the trigger state back to the detection state, and re-execute the monitoring of the vibration event.

3. The method according to claim 1, wherein Determining whether there is an effective vibration event currently based on the vibration message and, if so, executing the corresponding vibration security response measures includes: Based on the number of received vibration messages and the content of each vibration message, determine whether there is an effective vibration event currently; If so, execute the corresponding vibration security response measures.

4. The method according to claim 1, wherein The vibration security response measures further include: Generate an alarm message and send the alarm message to the associated alarm device so that the alarm device issues an audible and visual alarm; Generate monitoring frequency adjustment information and send the monitoring adjustment information to the associated monitoring device so that the monitoring device adjusts the sampling frequency; Generate an emergency report information and upload the emergency report information to the cloud server so that the cloud server conducts remote monitoring.

5. The method according to claim 1, characterized in that, The method further includes: Through the processing terminal, obtain the vibration waveform data transmitted by each probe component and summarize it into a vibration waveform data set, and upload the vibration waveform data set to the cloud server.

6. A security detection system, characterized in that, For executing the method according to any one of claims 1-5, the system includes a processing terminal and a plurality of probe components, and the processing terminal and each probe component are connected by a multi-core cable; The probe component is used to change to a target probe component when a vibration event in the pipeline is detected and triggered, switch the current state from the detection state to the trigger state, generate a vibration message, and send the vibration message to the processing terminal; The processing terminal is configured to receive the vibration message sent by the target probe assembly, and determine whether there is an effective vibration event currently based on the vibration message. If so, execute corresponding vibration safety response measures, and the vibration safety response measures at least include sending a waveform recording broadcast to each probe assembly; The probe assembly is configured to respond to the waveform recording broadcast, switch the current state to the waveform recording state, collect vibration waveform data, and upload the vibration waveform data to the processing terminal.

7. The system according to claim 6, wherein The probe assembly includes a collection module, a microcontroller, a first communication module, and a power supply module. The probe assembly is respectively connected to the multi-core cable through the first communication module and the power supply module, and the microcontroller is respectively connected to the collection module, the first communication module, and the power supply module; The collection module is configured to collect the vibration acceleration signal of the pipeline cross-section and send the vibration acceleration signal to the microcontroller; The microcontroller is configured to obtain the vibration acceleration signal, store the vibration acceleration signal in a circular buffer, and determine whether there is a vibration event currently based on the vibration acceleration signal. If so, switch the current state from the detection state to the trigger state, generate a vibration message, and send the vibration message to the processing terminal through the first communication module; The power supply module is configured to supply power to the microcontroller.

8. The system according to claim 6, wherein The processing terminal includes a microprocessor, a data transmission module, and a power supply management module; the processing terminal is respectively connected to the multi-core cable through the data transmission module and the power supply management module, and the microprocessor is respectively connected to the data transmission module and the power supply management module; The microprocessor is configured to obtain the vibration message transmitted by the probe assembly through the data transmission module, and determine whether there is an effective vibration event currently based on the vibration message. If so, execute corresponding vibration safety response measures; The power supply management module is configured to supply power to each probe assembly.

9. The system according to claim 8, wherein The processing terminal further includes a control panel, a second communication module, and a memory. The processing terminal is connected to an external communication device through the second communication module, and the external communication device at least includes a cloud server. The control panel, the second communication module, and the memory are all connected to the microprocessor; The control panel is configured to indicate the working state of the processing terminal; The memory is configured to store the vibration waveform data fed back by each probe assembly; The second communication module is configured to transmit the emergency report information and the vibration waveform data composed of each vibration waveform data to the external communication device.

10. The system according to claim 6, wherein Each probe assembly is fixed to the steel belt on the pipeline through a locking assembly.

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