CN112671833A - Anti-excavation monitoring system and method for underground pipeline - Google Patents
Anti-excavation monitoring system and method for underground pipeline Download PDFInfo
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Abstract
The invention discloses an anti-excavation monitoring system and method for an underground pipeline, wherein the system comprises a vibration sensor buried in soil above the underground pipeline, a main controller used for controlling the vibration sensor in real time and a server provided with an anti-excavation monitoring platform, the main controller is wirelessly connected with the server, the main controller is connected with a GPS module, an ADC module and an alarm circuit module, and the vibration sensor is respectively connected with the ADC module and the alarm circuit module through a signal conditioning module. The anti-excavation monitoring system for the underground pipeline provided by the invention is used for monitoring the underground pipeline within a certain range in real time, and once the excavation action is monitored, the alarm information is immediately transmitted to the background so as to be convenient for a management department to deal with the underground pipeline in time on site, prevent the damage of third-party construction to the gas pipeline, and has important significance for ensuring the safe, stable and efficient operation of the gas pipeline.
Description
Technical Field
The invention relates to a monitoring system and a monitoring method, in particular to an anti-excavation monitoring system and an anti-excavation monitoring method for an underground pipeline.
Background
The natural gas is a clean high-quality energy, the proportion of the natural gas in primary energy is improved, and the natural gas has important significance for optimizing the energy structure of China and relieving the energy demand tension and the environmental protection pressure of China. However, with the development of urban road construction and greening construction, third-party construction gradually becomes a main factor for the damage of gas pipelines. Gas enterprises invest huge manpower and financial resources for maintaining the integrity of natural gas pipelines and preventing third-party damage, but the situation of pipeline protection is urgent. The third party damage cause of the natural gas pipeline is complex, the randomness is strong, the prediction and the control are not easy, therefore, if the third party construction excavation can be effectively monitored, the pipeline failure damage accident caused by the third party construction can be favorably prevented, and the method has important significance for ensuring the safety, stability and high-efficiency operation of the natural gas pipeline.
Disclosure of Invention
The invention aims to provide an anti-excavation monitoring system for an underground pipeline, which can monitor whether excavation behaviors exist in a certain range in real time, and immediately transmit alarm information to a background once excavation actions are monitored so that a management department can timely go to the site for disposal to prevent a third party from damaging the gas pipeline.
Another object of the present invention is to provide a monitoring method using the above anti-excavation monitoring system.
In order to achieve the above purpose, the invention provides the following technical scheme:
the invention relates to an anti-excavation monitoring system of an underground pipeline, which is characterized by comprising a vibration sensor, a main controller and a server, wherein the vibration sensor is buried in soil above the underground pipeline;
the vibration sensor is used for sensing environmental vibration and converting a vibration signal into a voltage signal to be output;
the signal conditioning module is used for amplifying the voltage signal output by the vibration sensor and improving the signal amplitude;
the ADC module converts the analog signal into a digital signal and transmits the digital signal to the main controller;
the alarm circuit module is used for judging the amplitude of the vibration signal, when the amplitude exceeds a set threshold value, the main controller sends an alarm signal to the server, and the server sends an acquisition command to the alarm equipment after receiving the signal;
and the GPS module is responsible for providing time information for the main controller and sending a pulse per second signal, and is used for the main controller to synchronously start to acquire data at a set time point.
Preferably, the main controller is further connected with a storage module, a power management module and a wireless communication module;
the power supply management module is responsible for providing multi-path voltage-stabilized direct-current power supply output, meeting the normal working requirement of each functional module, realizing high-efficiency management of the power supply, reducing the power consumption of the system as much as possible and prolonging the battery endurance time;
the storage module is used for storing sensor data information, electric quantity information and configuration information;
and the wireless communication module is responsible for communicating with the server to complete heartbeat data sending, alarm information sending, vibration data sending and parameter configuration.
Preferably, the vibration sensors are arranged in 5 groups, and the 5 vibration sensors in each group are arranged above the underground pipeline in a cross shape.
Preferably, the spacing between adjacent vibration sensors is 5-8 m.
Preferably, the synchronization precision of the GPS module is 100 us.
Preferably, the model number of the main controller is STM32F103 RC.
The invention relates to an anti-excavation monitoring method of an underground pipeline, which is characterized by comprising the following steps of,
(1) the vibration sensor monitors a vibration signal in the working area and transmits the vibration signal to the signal conditioning module;
(2) after passing through the signal conditioning module, the vibration signal is transmitted to the alarm circuit module;
(3) when the alarm circuit module judges that the monitored vibration signal exceeds a set threshold value, alarm information is sent to the main controller, and the main controller forwards the alarm information to the anti-excavation monitoring platform;
(4) when the anti-excavation monitoring platform receives alarm information sent by 3 or more alarm circuit modules in the same group of sensors, the anti-excavation monitoring platform sends the serial numbers of all the equipment in the group to the main controller, and the main controller sends an instruction for starting to collect at a certain moment to the group of sensors;
(5) when the moment is reached, the group of sensors simultaneously start to collect vibration signals in a time period t1, after the collection is finished, the collected signal data are packaged into data packets one by one per second and are sent to the main controller one by one, after the main controller receives the data, whether the data are complete is judged firstly, then after the data of a continuous time period t1 starting from the moment are completely received by the same group of 5 equipment, an algorithm is called for calculation and analysis, and the main controller comprehensively judges the excavation type and the positioning result according to the result returned by the algorithm.
Preferably, in the step (5), during calculation and analysis, the final result is calculated, and the algorithm is called for at least 5 times, if the number of the results is less than 5, the wake-up instruction is issued again to the same group of sensors to perform a new round of data acquisition and upload, and then the algorithm is called to obtain the result until 5 groups of result data are obtained.
Preferably, the time interval of the anti-excavation monitoring platform receiving the vibration signal in the step (4) is within 20S; the time period t1 in step (5) is 10s, and the sampling rate of the 10s vibration signal is 3750.
Preferably, the division criteria of the excavation types are that 0 represents no excavation, 1 represents manual excavation, and 2 represents mechanical excavation.
Compared with the prior art, the anti-excavation monitoring system for the underground pipeline provided by the invention is used for monitoring the underground pipeline in a certain range in real time, and once the excavation action is monitored, the alarm information is immediately transmitted to the background so that a management department can timely go to the site for disposal, the damage of a third party to the gas pipeline is prevented, and the anti-excavation monitoring system for the underground pipeline has important significance for ensuring the safe, stable and efficient operation of the gas pipeline.
Drawings
The accompanying drawings, which are included to provide a further understanding 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 invention and not to limit the invention. In the drawings:
FIG. 1 is a system block diagram of an anti-excavation system according to the present invention;
FIG. 2 is a layout diagram of the same set of vibration sensors;
FIG. 3 is a schematic diagram of the excavation monitoring method of the present invention;
FIG. 4 is a layout diagram of the same group of vibration sensors in embodiment 1;
fig. 5 is a diagram of excavation positions acquired in example 1.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention more clearly apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1-3, an anti-excavation monitoring system for an underground pipeline comprises a vibration sensor buried in soil above the underground pipeline, a main controller for controlling the vibration sensor in real time, and a server provided with an anti-excavation monitoring platform, wherein the main controller is wirelessly connected with the server, a GPS module, an ADC module and an alarm circuit module are connected to the main controller, and the vibration sensor is respectively connected with the ADC module and the alarm circuit module through a signal conditioning module;
the vibration sensor is used for sensing environmental vibration and converting a vibration signal into a voltage signal to be output;
the signal conditioning module is used for amplifying the voltage signal output by the vibration sensor and improving the signal amplitude;
the ADC module converts the analog signal into a digital signal and transmits the digital signal to the main controller;
the alarm circuit module is used for judging the amplitude of the vibration signal, when the amplitude exceeds a set threshold value, the main controller sends an alarm signal to the server, and the server sends an acquisition command to the alarm equipment after receiving the signal;
and the GPS module is responsible for providing time information for the main controller and sending a pulse per second signal, and is used for the main controller to synchronously start to acquire data at a set time point.
The main controller is also connected with a storage module, a power management module and a wireless communication module;
the power supply management module is responsible for providing multi-path voltage-stabilized direct-current power supply output, meeting the normal working requirement of each functional module, realizing high-efficiency management of the power supply, reducing the power consumption of the system as much as possible and prolonging the battery endurance time;
the storage module is used for storing sensor data information, electric quantity information and configuration information;
and the wireless communication module is responsible for communicating with the server to complete heartbeat data sending, alarm information sending, vibration data sending and parameter configuration.
In order to realize the accurate positioning of the excavation signals, the vibration sensors adopt a five-element cross positioning method, namely 5 vibration sensors are used as one group, and the 5 vibration sensors in each group are arranged above the underground pipeline in a cross shape.
The distance between adjacent vibration sensors is 5-8 m.
The synchronization precision of the GPS module is 100 us.
The model number of the main controller is STM32F103 RC.
An anti-excavation monitoring method for an underground pipeline comprises the following steps,
(1) the vibration sensor monitors a vibration signal in the working area and transmits the vibration signal to the signal conditioning module;
(2) after passing through the signal conditioning module, the vibration signal is transmitted to the alarm circuit module;
(3) when the alarm circuit module judges that the monitored vibration signal exceeds a set threshold value, alarm information is sent to the main controller, and the main controller forwards the alarm information to the anti-excavation monitoring platform;
(4) when the anti-excavation monitoring platform receives alarm information sent by 3 or more alarm circuit modules in the same group of sensors at the same time (within 20S), the anti-excavation monitoring platform issues the numbers of all the devices in the group to the main controller, and the main controller sends an instruction for starting to collect at a certain moment to the group of sensors;
(5) when the moment is reached, the group of sensors start to acquire 10s vibration signals at the same time, the sampling rate of the 10s vibration signals is 3750, after the acquisition is completed, the acquired signal data are packaged into one data packet per second and are sent to the main controller one by one, the main controller judges whether the data are complete or not after receiving the data, then the algorithm is called for calculation and analysis after the data of continuous 10s starting from a certain moment are received by the same group of 5 equipment, and the main controller comprehensively judges the excavation type (0 without excavation 1, manual excavation 2, mechanical excavation) and the positioning result (distance and angle relative to the central point) according to the result returned by the algorithm.
In order to reduce the occurrence of misjudgment, the algorithm is required to be called for at least 5 times when the final result is calculated, therefore, the main controller can also judge the result of the algorithm calling, if the number of the result is less than 5, a wake-up command is issued again to the same group of sensors for a new round of data acquisition and uploading, then the algorithm is called to obtain the result until 5 groups of result data are obtained, then the main controller comprehensively judges according to the result returned by the algorithm (firstly, 12 is taken as a major class, if the sum of the 1 plus 2 times is more than 0, the excavation is judged to be the existence of the excavation, otherwise, the excavation is not the existence of the excavation, if the excavation exists, the manual excavation or the mechanical excavation is judged according to the number of the 1 and the 2 times, if the two times are equal, the mechanical excavation is judged to be the existence of the excavation, and the final result is transmitted to an excavation-preventing, only the excavation type is transmitted without excavation).
Example 1, referring to fig. 4 and 5, the same set of five vibration sensors is arranged at a spacing d, and the system positioning process: and after the excavation signal is detected, positioning the excavation target signal by using a five-element cross method.
(1) Performing cross-correlation operation on signals of the sensors 1 and 4 and signals of the sensors 3 and 4 respectively, and predicting which right-angle area the target is in by two time delays;
(2) if the target is judged to be in the upper/lower right-angle area in advance, positioning by using a sensor 1, a sensor 2 and a sensor 3 in a straight line combination way; if the pre-judged target is in the left/right-angle area, positioning by using a sensor 4, a sensor 2 and a sensor 5 through three-point straight line combination;
(3) and when the positioning result exceeds the pre-judged right-angle area at a certain time, switching to the sensor combination corresponding to the right-angle area where the positioning result is located for repositioning.
The system processes the acquired signals:
and (3) a signal denoising algorithm: sdn ═ signalDenoise (sn, vis _ sw)
The input is a noise-containing signal, the output is a de-noising signal, and contrast display is supported. The denoising algorithm adopts db10 wavelet base to carry out 5-layer wavelet decomposition, utilizes a big-Massart strategy to carry out layered high-frequency wavelet coefficient soft threshold quantization, and finally reconstructs a denoising signal.
An excavation target signal detection and positioning algorithm:
[excaType,excaLocD,excaLocA]＝excavationMonitor(sig1,sig2,sig3,sig4,sig5,fs)
inputting signals collected by a quinary cross array and a signal sampling rate, and outputting the types of the signals uploaded for excavation monitoring: there is not excavation (excaType is 0), manual excavation (excaType is 1), mechanical excavation (excaType is 2), if detect the excavation signal, output excavation target signal source locating information: excaLocD (polar radius), excaLocA (polar angle).
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.
Claims (10)
1. The utility model provides an underground pipeline's monitoring system that prevents digging which characterized in that: the system comprises a vibration sensor buried in soil above an underground pipeline, a main controller for controlling the vibration sensor in real time and a server provided with an anti-excavation monitoring platform, wherein the main controller is wirelessly connected with the server, a GPS module, an ADC module and an alarm circuit module are connected to the main controller, and the vibration sensor is respectively connected with the ADC module and the alarm circuit module through a signal conditioning module;
the vibration sensor is used for sensing environmental vibration and converting a vibration signal into a voltage signal to be output;
the signal conditioning module is used for amplifying the voltage signal output by the vibration sensor and improving the signal amplitude;
the ADC module converts the analog signal into a digital signal and transmits the digital signal to the main controller;
the alarm circuit module is used for judging the amplitude of the vibration signal, when the amplitude exceeds a set threshold value, the main controller sends an alarm signal to the server, and the server sends an acquisition command to the alarm equipment after receiving the signal;
and the GPS module is responsible for providing time information for the main controller and sending a pulse per second signal, and is used for the main controller to synchronously start to acquire data at a set time point.
2. The anti-excavation monitoring system of an underground utility according to claim 1, wherein: the main controller is also connected with a storage module, a power management module and a wireless communication module;
the power supply management module is responsible for providing multi-path voltage-stabilized direct-current power supply output, meeting the normal working requirement of each functional module, realizing high-efficiency management of the power supply, reducing the power consumption of the system as much as possible and prolonging the battery endurance time;
the storage module is used for storing sensor data information, electric quantity information and configuration information;
and the wireless communication module is responsible for communicating with the server to complete heartbeat data sending, alarm information sending, vibration data sending and parameter configuration.
3. The anti-excavation monitoring system of an underground utility according to claim 1, wherein: the vibration sensors are 5 in one group, and the 5 vibration sensors in each group are arranged above the underground pipeline in a cross shape.
4. The anti-excavation monitoring system for an underground pipeline according to claim 1 or 3, wherein: the distance between adjacent vibration sensors is 5-8 m.
5. The anti-excavation monitoring system of an underground utility according to claim 1, wherein: the synchronization precision of the GPS module is 100 us.
6. The anti-excavation monitoring system of an underground utility according to claim 1, wherein: the model number of the main controller is STM32F103 RC.
7. An anti-excavation monitoring method for an underground pipeline is characterized by comprising the following steps: the method comprises the following steps of,
the vibration sensor monitors a vibration signal in the working area and transmits the vibration signal to the signal conditioning module;
after passing through the signal conditioning module, the vibration signal is transmitted to the alarm circuit module;
when the alarm circuit module judges that the monitored vibration signal exceeds a set threshold value, alarm information is sent to the main controller, and the main controller forwards the alarm information to the anti-excavation monitoring platform;
when the anti-excavation monitoring platform receives alarm information sent by 3 or more alarm circuit modules in the same group of sensors, the anti-excavation monitoring platform sends the serial numbers of all the equipment in the group to the main controller, and the main controller sends an instruction for starting to collect at a certain moment to the group of sensors;
when the moment is reached, the group of sensors simultaneously start to collect vibration signals in a time period t1, after the collection is completed, the collected signal data are packaged into data packets one by one per second and are sent to the main controller one by one, after the main controller receives the data, whether the data are complete is judged firstly, then after the data of a continuous time period t1, starting from a certain moment, of the same group of multiple devices are received, an algorithm is called for calculation and analysis, and the main controller comprehensively judges the excavation type and the positioning result according to the result returned by the algorithm.
8. The underground utility excavation prevention monitoring system and method of claim 7, wherein: when the algorithm is called again for calculation and analysis, the final result is calculated, the algorithm is called for at least 5 times, if the number of the results is less than 5, the awakening instruction is issued again to the same group of sensors for a new round of data acquisition and uploading, and then the algorithm is called to obtain the result until 5 groups of result data are obtained.
9. The underground utility excavation prevention monitoring system and method of claim 7, wherein: the time interval of the anti-excavation monitoring platform for receiving the vibration signal is within 20S;
the continuous time period t1 is 10s, and the sampling rate of the 10s vibration signal is 3750.
10. The underground utility excavation prevention monitoring system and method of claim 7, wherein: the division standard of the excavation types is that 0 represents no excavation, 1 represents manual excavation, and 2 represents mechanical excavation.
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