KR100720737B1 - Third-party damage monitoring system by support sensor and the method thereof - Google Patents

Abstract

The present invention relates to a third-party monitoring system and method by the auxiliary sensor, in addition to the main sensor is installed in contact with the gas pipe, the third-party construction by analyzing the signal from the auxiliary sensor that is installed at regular intervals apart from the gas pipe The purpose is to significantly increase the reliability of third-party judgment by monitoring. Other construction monitoring device according to the auxiliary sensor of the present invention configured for this purpose is an acceleration sensor which is installed in direct contact with the gas pipe; An auxiliary sensor which is an acceleration sensor embedded around the main sensor while being spaced apart from the gas pipe by a predetermined distance; Alarm means for warning the occurrence of other construction; And a control means for comprehensively processing the detection signals from the main sensor and the auxiliary sensor to determine whether another construction is occurring, and if it is determined to be another construction, driving the alarm means. On the other hand, the detection signal is input from the auxiliary sensor is configured to determine that the actual other construction occurred only when the detection signal is not input.

Other construction, gas, piping, pipe, auxiliary sensor, frequency, alarm

Description

Third-party damage monitoring system by support sensor and the method

1 is a schematic block diagram of a third-party monitoring system according to the prior art.

2 is a flow chart for explaining the operation of the system shown in FIG.

Figure 3 is an overall block diagram of a third-party monitoring system by the auxiliary sensor according to the technology of the present invention.

Figure 4 is a flow chart for explaining the impact confirmation process in the individual client in the third-party monitoring method by the auxiliary sensor according to the technology of the present invention.

Figure 5 is a flow chart for explaining the third-party judgment process in the server in the third-party monitoring method by the auxiliary sensor according to the technology of the present invention.

6 is a view for explaining the definition of the distance and time when the gas pipe is impacted between any two clients.

[Description of Symbols for Main Parts of Drawing]

10. Gas piping 20, 30. Acceleration sensor

40. Amplifier / Band Filter 50. Signal Processor

60. Modem 70. Data Analysis Processor

80. Monitor 90. Alarm

100. Gas piping 110. Soil

120a, 120b. Signal processing units 121a and 121b. Amplifier & Filter

122a, 122b. ADC & CPU 123a, 123b. GPS module

124a, 124b. Alarm & Buzzer 125a, 125b. power

126a, 126b. Antenna 130a, 130b. computer

140a, 140b. Heater 150a, 150b. UPS

160a, 160b. Main sensor 170a, 170b. Auxiliary Sensor

The present invention relates to a third-party monitoring system for a gas pipe, and in particular, in addition to the main sensor installed in contact with the gas pipe, the third-party monitoring is performed by comprehensively analyzing signals from auxiliary sensors installed at regular intervals apart from the gas pipe. It relates to a third-party monitoring system and method by the auxiliary sensor.

In general, since the 1950s, a convenient and economical method of transporting energy sources has been widely used as a transportation method, and many energy sources have been made through piping that is easy to transport remotely. Buried pipelines used for transporting natural gas among these pipes can cause large accidents such as gas leakage or explosion due to breakage due to the wide range of buried pipes and their installation in densely populated areas.

On the other hand, according to the analysis of recent data, natural gas buried pipeline damage is not directly caused by pressure change or corrosion inside the pipe, but is directly affected by drilling equipment during civil works around the pipe (hereinafter referred to as "Third-Party Damage"). Is not only a major cause of pipe breakage, but also prevents it from the enormous amount of economic and human damage that can be caused, especially in the event of an accident. The provision of countermeasures is essential.

Therefore, as part of the countermeasures to prevent this, the present applicant monitors the impact on the gas pipe in real time using wired / wireless data communication network and displays it so that the supervisor can recognize it, or generates a danger signal, thus preventing the occurrence of an accident. The patent application for gas pipe monitoring system that can prevent the problem was registered as patent number 402685 (name of the invention: real-time damage detection monitoring system of buried pipe by other construction and the method of calculating the impact location of gas pipe).

1 is a schematic block diagram of a third-party monitoring system according to the prior art.

As shown in FIG. 1, when an impact is applied to the gas pipe 10, the shock wave propagates in both directions through the gas of the pipe. An amplifier and a band filter 40 for amplifying and filtering a signal detected by the acceleration sensors A and B (20, 30) in a state where the acceleration sensors A and B (20, 30) are installed to detect a shock, A signal processor 50 for converting an analog signal passed through the amplifier and the bandpass filter 40 into a digital signal having a corresponding size, that is, A / D conversion and triggering the signal, and wirelessly transmitting / receiving the triggered signal in real time. A monitor displaying the analysis results processed by the data analysis processor 70 and the data analysis processor 70 to analyze whether or not the third-party is generated by analyzing data received through the modem 60 and the wireless modem 60 in real time. It is configured to include an alarm (90) and the alarm (90) to alert the occurrence of other construction.

In the above-described configuration, the data analysis processor 70 compares the shock signal data of both sections, and when it is determined that another construction has occurred, the data analysis processor 70 alerts the administrator through the alarm 90 and the shock signal data of both sections is stored. After calculating the impact position based on the time difference arrived, the monitor 80 or the like is notified to the manager.

FIG. 2 is a flow chart for explaining the operation of the system shown in FIG.

As shown in FIG. 2, when an acceleration sensor A 20 having a sensitivity of 312 pC / g fixedly installed at one end of the gas pipe 10 detects an impact applied to the pipe, the detection signal is firstly amplified. After amplification at 10V / g, only a signal of 1 Hz to 1 kHz is extracted through a band pass filter 40 again. Next, the signal processor 50 compares the filtered signal with a predetermined reference signal and outputs a trigger signal when the filtered signal is larger than the reference signal. At this time, the generation time of the trigger signal and the waveform of the filtered signal are output. The data is sent to the data analysis processor 70 through the wireless modem 60.

In the same manner, when the acceleration sensor B 30 having a sensitivity of 312 pC / g fixedly installed at the opposite end of the gas pipe 10 detects an impact applied to the gas pipe 10, the detection signal is firstly an amplifier ( After amplification at 10 V / g at 40), only the signal of 1 Hz to 1 kHz is extracted through the band filter 40 again. Next, the signal processor 50 compares the filtered signal with a predetermined reference signal and outputs a trigger signal when the filtered signal is larger than the reference signal. At this time, the generation time of the trigger signal and the waveform of the filtered signal are output. The data is sent to the data processor 70 through Ethernet.

Meanwhile, as described above, when the generation time of the trigger signal and the waveform of the filtered signal enter the data analysis processor 70 through the Ethernet, the data analysis processor 70 compares these data to generate another construction. If it is finally determined whether or not other construction has occurred, it is notified to the manager, and the occurrence position of the other construction is calculated and displayed on the monitor by a predetermined algorithm.

However, according to the conventional third-party surveillance system as described above, since the judging of the third-party construction occurs according to the result of simply comparing the magnitude of the detection signal detected by the single acceleration sensor with a predetermined reference value, human speech or footsteps Or there is a problem that the reliability of the determination result is significantly lowered due to the noise itself or interference caused by the outside, such as the working sound on the road.

The present invention has been made to solve the above-mentioned problems of the prior art, in addition to the main sensor is installed in contact with the gas pipe, the other construction by analyzing the signal from the auxiliary sensor is spaced apart at regular intervals in the gas pipe is comprehensively analyzed The purpose of the present invention is to provide a third-party monitoring system and method by an auxiliary sensor that can significantly increase the reliability of the third-party judgment by monitoring.

The present invention is configured as follows to achieve the object as described above. That is, the third-party monitoring device according to the auxiliary sensor of the present invention is installed in direct contact with the gas pipe; An auxiliary sensor embedded around the main sensor while being spaced apart from the gas pipe by a predetermined distance; Alarm means for warning the occurrence of other construction; And a control means for comprehensively processing the detection signals from the main sensor and the auxiliary sensor to determine whether another construction has occurred, and to drive an alarm means when it is determined that the construction has been performed by another construction.

In the configuration as described above, both the main sensor and the auxiliary sensor may be configured as an acceleration sensor.

The above-mentioned control means is more preferably made of a configuration that determines that the actual third construction occurred only when the detection signal is input from the main sensor while the detection signal is not input.

On the other hand, the third-party monitoring device by the auxiliary sensor of the present invention as described above may further include a GPS module for receiving the satellite data from the GPS satellites to synchronize the time of the device by the standard time.

The third-party monitoring system by an auxiliary sensor according to another feature of the present invention includes a plurality of clients installed at predetermined intervals with respect to the gas pipe to generate a blow generation signal; And a server for finally determining whether or not an actual third-party construction has occurred based on the strike occurrence signals provided from a plurality of clients, and calculating a strike occurrence position. Each client is installed in direct contact with the gas pipe. When the blow occurs, the auxiliary sensor and the sensor from the main sensor and the auxiliary sensor embedded around the main sensor are comprehensively processed with a predetermined distance from the main sensor and the gas pipe. It includes a third party monitoring device comprising a control means for generating a, a computer and an uninterruptible power supply for transmitting a blow generation signal generated from the other construction monitoring device to the server.

The third-party monitoring apparatus configured as described above may further include a GPS module that receives satellite data from the GPS satellites and synchronizes the time of the device by the standard time.

In addition, each client may be further provided with a heater for maintaining the ambient temperature within a predetermined range.

The third-party monitoring method by the auxiliary sensor according to another feature of the present invention is (a) the main sensor is installed in direct contact with the gas pipe and the sensor is installed from the auxiliary sensor embedded around the main sensor spaced apart by a predetermined distance from the gas pipe Determining whether the S / N ratio (signal-to-noise ratio) for each sensed signal exceeds each reference value when a signal is input; (b) determining whether the detection signal is input at the same time when the S / N ratios of the respective detection signals in step (a) all exceed the respective reference values; And (c) if it is input at the same time as a result of the determination in step (b), determining that another construction has occurred and generating an alarm, and if it is input at another time, ignoring it.

Hereinafter, with reference to the accompanying drawings will be described in detail a preferred embodiment of the third-party monitoring system and method by the auxiliary sensor of the present invention.

3 is an overall block diagram of a third-party monitoring system by an auxiliary sensor according to the present invention.

As shown in FIG. 3, the third-party monitoring system using the auxiliary sensor of the present invention has an overall configuration based on the third-party construction based on signals from a plurality of clients and respective clients installed at predetermined intervals of the gas pipe 100. And finally determining whether or not the occurrence of the other construction may include a server for calculating the occurrence position of the other construction.

In the above-described configuration, each client again processes the signals output from the signal processing units 120a and 120b and the signal processing units 120a and 120b to detect and output a hit when the gas pipe 100 is hit. Computers (130a, 130b) that transmit to the server through wired Internet equipment such as modems or wireless Internet equipment such as wireless LAN, and UPS as a power backup device to ensure that the client equipment can operate stably in the event of a power failure of AC power. 150a and 150b and heaters 140a and 140b that provide a temperature range of a predetermined range, for example 15-25 ° C., to the client equipment for stable operation of the client equipment.

Next, each signal processing unit (120a, 120b) is a main sensor (160a, 160b) is installed in contact with the gas pipe 100 at predetermined intervals again, a predetermined distance from each of the main sensors (160a, 160b), For example, a desired frequency band in the signals provided from the auxiliary sensors 170a and 170b, the main sensors 160a and 160b, and the auxiliary sensors 170a and 170b, which are mounted and embedded on a steel plate having a predetermined size, spaced apart by 30 cm. Amplifiers & filters 121a and 121b comprising a filter for passing only components and an amplifier for amplifying a signal passing through the filter, an A / D converter for converting an analog amplified signal from the amplifier into a digital signal of a corresponding size; ADC & CPU 122a, 122b, which consists of a CPU that processes and recognizes the converted digital signals, and GPS, which captures satellite signals from GPS satellites to synchronize the time between the clients with international standard time. Detection of a blow to the GPS modules 123a and 123b and the gas pipe 100 that processes the satellite signals captured by the tena 126a and 126b and the GPS antennas 126a and 126b to accurately calculate the current time. In this case, it may include an alarm & buzzer 124a and 124b for alarming this visually and audibly and the power supply units 125a and 125b for supplying stable power to the signal processing units 120a and 120b.

In the configuration of the signal processing units 120a and 120b as described above, both the main sensors 160a and 160b and the auxiliary sensors 170a and 170b may be implemented as acceleration sensors. In this case, the reason for using the auxiliary sensors 170a and 170b in addition to the main sensors 160a and 160b is to accurately detect the impact on the gas pipe 100 by reducing the influence of noise.

In more detail, the most common noise among the measured noises is that the pipe is vibrated by the gas flowing in the pipe, and it is determined whether the impact sound is easily distinguished or difficult to distinguish according to the level of the noise. In addition to this gas noise, the noise applied from the outside can be classified into two types. First, a person's speech or noise is directly transmitted to the pipe through the air. Noise transmitted through the soil, such as noise from various vehicles or equipment. Among them, the noise through the air is easily removed by embedding the main sensor in the ground, but the noise through the soil is not easily removed. The sensors 170a and 170b are adopted. Table 1 below is a table for determining whether the signal due to the actual blow or the noise caused by the soil.

Shock Sound Recognition Judgment Main sensor Auxiliary Sensor recognition recognition Not plumbing shock recognition Unrecognized Piping impact Unrecognized recognition Not plumbing shock

As shown in Table 1 above, when a direct blow to the gas pipe 100 occurs, the main sensors 160a and 160b are installed in direct contact with the gas pipe 100 so as to recognize this, but the auxiliary sensors 170a and 170b. Since it is buried in the soil spaced a predetermined distance from the gas pipe 100 is not recognized this. On the other hand, the shock is recognized in both the main sensor (160a, 160b) and the auxiliary sensor (170a, 170b) or the shock is not recognized in the main sensor (160a, 160b) only the shock is recognized only in the auxiliary sensor (170a, 170b) In this case, it may be determined that the impact through the soil is not caused by the direct impact on the gas pipe 100.

4 is a flowchart illustrating a shock confirmation process in an individual client in a third-party monitoring method using an auxiliary sensor according to the present invention. Unless otherwise described, the CPUs of the ADC & CPUs 122a and 122b mainly control the impact. Make sure it is done.

As shown in FIG. 4, in step S10, it is determined whether a detection signal is input from the main sensors 160a and 160b and the auxiliary sensors 170a and 170b. If not, the process returns to step S10. If it is input, the process proceeds to step S12 to determine which of the main sensor (160a, 160b) and the auxiliary sensor (170a, 170b) from the signal input.

If a signal is input from the auxiliary sensors 170a and 170b as a result of the determination in step S12, the process proceeds to step S20 to bandpass filter only necessary frequency band components through the amplifiers & filters 121a and 121b. In step S22, it is determined whether the signal-to-noise ratio (S / N ratio) is equal to or greater than a first predetermined reference value R1. As a result of the determination in step S22, if the S / N ratio is equal to or greater than the first reference value R1, the program proceeds to step S40, and otherwise returns to step S20.

On the other hand, if a signal is input from the main sensors 160a and 160b as a result of the determination in step S12, the process proceeds to step S30 where only the desired frequency band components are passed through the amplifiers & filters 121a and 121b. In step S32, it is determined whether the S / N ratio is equal to or greater than the second predetermined reference value R2. As a result of the determination in step S32, if the S / N ratio is equal to or greater than the first reference value R2, the program proceeds to step S40, and otherwise returns to step S30.

In step S40 again, it is determined whether the signals from the main sensors 160a and 160b and the auxiliary sensors 170a and 170b are input at the same time. S42), the flow advances to step S44 to send a shock confirmation alert to the server. On the other hand, if it is input in different time zones as a result of the determination in step S40, the program returns to step S10.

FIG. 5 is a flowchart illustrating a process of determining a third-party construction in a server in a method of monitoring a third-party construction by an auxiliary sensor according to the present disclosure.

)를 계산한다.As shown in FIG. 5, in steps S50 and S60, data is input from an arbitrary client that has undergone the process illustrated in FIG. 4, that is, client 1 and client 2, and again, steps S52 and S62. ) Determines whether the input data is an impact detection signal. As a result of the determination in steps S52 and S62, if the data input from the clients 1 and 2 is not a shock detection signal, the program returns to steps S50 and S60 and is a shock detection signal. In step S70, the difference between the times at which the two clients transmit data (

Calculate

6 is a view for explaining the definition of the distance and time when an impact is applied to the gas pipe between any two clients.

이고, 두 지점 사이 배관내에서 음파의 전달속도가

라고 하면, 클라이언트1과 클라이언트2의 두 지점 사이를 음파가 전달되는 시간은 아래의 수학식 1과 같이 결정된다.As shown in FIG. 6, the distance between Client 1 and Client 2

And the velocity of sound waves in the pipe between the two points

In this case, the time at which sound waves are transmitted between two points of Client 1 and Client 2 is determined as in Equation 1 below.

보다 작아야 한다. 서버에서는 단계(S70)에서 이러한 원리를 이용하여 만약 두 지점에서 측정한 충격 시간차가

보다 작으면 충격으로 판정하고 단계(S90)로 진행하여 경보를 발생시킨다.Thus, if an impact occurs between two points, the time difference delivered to the sensor at the two points is

Should be smaller than The server uses this principle in step S70 to determine if the impact time difference measured at two points

If smaller, it is determined as an impact and the flow advances to step S90 to generate an alarm.

On the other hand, there is a relationship as shown in Equation 2 below between the length and time of the actual pipe.

,

와

,

사이에는 아래의 수학식 3과 같은 관계가 성립한다.And,

,

Wow

,

The following relationship holds for the following equation (3).

,

,

와

,

,

사이에는 아래의 수학식 4 및 수학식 5와 같은 관계가 성립한다.Meanwhile,

Wow

,

,

Relationships such as the following Equations 4 and 5 are established therebetween.

(클라이언트1이 더 늦게 충격파를 측정한 경우)

(When client 1 measured the shock wave later)

In addition, the above Equations 2 to 4 are summarized as Equations 6 and 7 below.

As a result, in step S80, the impact point can obtain a distance from the client 1 and the client 2 based on the above Equations 6 and 7 in step S80, which is used in Equations 2 to 7 above. The sign is defined as follows.

: 충격지점에서 클라이언트1 지점까지의 거리

: Distance from impact point to client1 point

: 충격지점에서 클라이언트2 지점까지의 거리

: Distance from impact point to Client2

: 클라이언트1에서부터 클라이언트2까지 충격파 전달 시간

: Shock wave propagation time from client 1 to client 2

: 클라이언트1에서부터 클라이언트2까지의 거리

: Distance from client1 to client2

: 배관에서의 음파 속도

: Sound velocity in the pipe

: 충격지점에서부터 클라이언트1까지의 거리

: Distance from impact point to client1

: 충격지점에서부터 클라이언트1까지의 거리

: Distance from impact point to client1

: 클라이언트1과 클라이언트2 지점에서 충격파가 측정된 시간차

Is the time difference measured from the shockwave points at Client 1 and Client 2.

보다 큰 경우에는 단계(S100)로 진행하여 에러 처리를 행한 후에 프로그램을 종료한다.Meanwhile, in step S70 of FIG. 5, the time difference

If larger, the process proceeds to step S100, error processing is performed, and the program ends.

The third-party monitoring system and method by the auxiliary sensor of the present invention can be implemented without various modifications within the range allowed by the technical idea of the present invention without being limited to the above-described embodiment.

According to the third-party monitoring system and method by the auxiliary sensor of the present invention as described above, in addition to the main sensor is installed in contact with the gas pipe by analyzing a signal from the auxiliary sensor that is spaced apart at regular intervals in the gas pipe By monitoring other constructions, the reliability of the judgment of other constructions can be significantly improved.

Claims (8)

A main sensor which is an acceleration sensor installed in direct contact with the gas pipe; An auxiliary sensor which is an acceleration sensor embedded around the main sensor while being spaced apart from the gas pipe by a predetermined distance; Alarm means for warning the occurrence of other construction; And Comprising the detection signal from the main sensor and the auxiliary sensor comprehensively determines whether the other construction occurs, and if it is determined that the other construction is made, including a control means for driving the alarm means, Wherein the control means is input to the detection signal from the main sensor while the auxiliary sensor is a third-party detection device by the auxiliary sensor, characterized in that it is determined that the actual third-party occurred only when the detection signal is not input. delete delete The third-party monitoring device according to claim 1, further comprising a GPS module for receiving satellite data from a GPS satellite and synchronizing the time of the device with a standard time. A plurality of clients installed at predetermined intervals with respect to the gas pipe to generate a blow generation signal; And On the basis of the hit occurrence signal provided from the plurality of clients, the final determination whether or not the occurrence of the actual other construction is made, including an alarm and at the same time calculates the hit occurrence position, Each of the clients includes a main sensor installed in direct contact with a gas pipe and an auxiliary sensor embedded around the main sensor spaced apart from the gas pipe by a predetermined distance, and detection signals from the main sensor and the auxiliary sensor. It is determined by the processing to determine whether a blow occurs, if a blow occurs, a third party monitoring device comprising a control means for generating a blow generation signal, a computer for transmitting a blow generation signal generated from the other construction monitoring device to the server and uninterrupted Third-party monitoring system by auxiliary sensor, including the power supply. 6. The third-party monitoring system according to claim 5, wherein the third-party monitoring device further comprises a GPS module for receiving satellite data from a GPS satellite and synchronizing the time of the device with a standard time. 7. The third-party monitoring system according to claim 5 or 6, wherein each of the clients further includes a heater for maintaining the ambient temperature within a predetermined range. (a) S / N for each detection signal when a detection signal is input from a main sensor installed in direct contact with a gas pipe and an auxiliary sensor embedded around the main sensor while being spaced a predetermined distance from the gas pipe. Determining whether the ratio (signal-to-noise ratio) exceeds each reference value; (b) determining whether the detection signal is input at the same time when the S / N ratios of the respective detection signals in step (a) all exceed the respective reference values; And (c) by the auxiliary sensor comprising the step of judging that the other construction has occurred when the input in the same time as a result of the determination in step (b), and ignoring it when input at other times Third Party Monitoring Method.

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