KR101046865B1 - Monitoring system and the method for in digging - Google Patents

Abstract

PURPOSE: An excavation work monitoring system and a method thereof are provided to output a frequency to a gas pipe by installing a frequency generation device at a remote monitoring system. CONSTITUTION: A wireless communications unit(201) receives a remote control signal from the from outside. A signal conversion unit(202) converts the signal received from a wireless communication unit to a digital signal. A control unit(203) receives the converted digital signal and outputs a power control signal. A frequency conversion unit(204) converts the power control signal to a frequency signal. A power supply unit(205) turns on/off the power corresponding to the frequency signal.

Description

Excavation monitoring system and method {MONITORING SYSTEM AND THE METHOD FOR IN DIGGING}

The present invention relates to an excavation monitoring system and a method thereof, and in particular, by installing a frequency generator in a remote monitoring system for monitoring a gas pipeline constant pressure and outputting a frequency to the gas pipeline, the excavation site location and piping according to the sensitivity of receiving the frequency The present invention relates to an excavation monitoring system and a method for monitoring an abnormality of coating.

Conventional excavation monitoring method is based on the excavation construction system EOCS (excavation construction information system) requests the city gas company on-site entry (receipt), or once a day centered around the place where pipes are buried We inspect the unreported excavation work found during the round trip inspection.

Such a conventional management system is easy to manage when the excavation construction worker receives the EOCS and requests for admission, but in the case of undeclared or emergency excavation construction, the scope of the construction and the presence of city gas pipe laying The risk of safety accidents due to excavation is high.

In addition, since the city gas pipeline burial area is buried on the back road in the center of the city, there are areas where road width is narrow and areas difficult for round trip inspection such as one-way traffic.

The technical problem to be solved by the present invention is to install a frequency generator in the remote monitoring system for monitoring the gas pipeline constant pressure and output the frequency to the gas pipeline to monitor the site location of the excavation work and the presence of abnormality of the pipe coating according to the sensitivity of the frequency received The present invention provides an excavation monitoring system and a method thereof.

Technical problems to be achieved in the present invention are not limited to the above-mentioned technical problems, and other technical problems not mentioned above will be clearly understood by those skilled in the art from the following description. Could be.

In the excavation construction monitoring system according to the present invention for solving the above technical problem, a gas piping for supplying gas, a pressure regulator for controlling the supply pressure of the gas and a far field monitoring system for monitoring the constant pressure in the gas piping facility And a wireless communication unit for receiving a remote control signal from an external source, a signal converter for converting a signal received from the wireless communication unit into a digital signal, and receiving the converted digital signal to determine generation of a frequency signal of a predetermined band to control power supply. A control unit for outputting a signal, a frequency converting unit for converting the determined frequency signal into a frequency signal, a power supply unit for receiving a power control signal of the control unit and turning on / off power corresponding to the frequency signal of the predetermined band; A main band of a predetermined band connected to the gas pipe and converted by the frequency converter; Including by generating a number of signal frequency generation portion for outputting to the gas pipe, and is characterized in that provided in the far-field monitoring system.

Here, the signal converter has an A / D converter for converting an analog signal into a digital signal, and a D / A converter for converting a digital signal into an analog signal.

Here, the power supply is characterized in that it comprises a relay device for turning on / off the power.

Here, the control unit is characterized in that the frequency of the predetermined band is controlled to occur differently according to the soil type.

In this case, the frequency of the predetermined band of the control unit is characterized in that the control to automatically convert to 200 kHz ~ 200 kHz or 8.19 kHz ~ 40 kHz band.

Here, the frequency converter is characterized in that it comprises a means for converting an AC voltage to a DC voltage.

Here, it is characterized in that it further comprises a receiving device for receiving a frequency of a predetermined band output from the frequency generator.

Here, the receiving device is characterized in that it is installed in the upper portion of the patrol vehicle or large building.

In this case, it is characterized in that the excavation site location or the gas pipe failure state is detected by determining whether or not the degree of frequency reception sensitivity received by the receiving device.

In addition, the excavation monitoring method according to the present invention comprises a gas pipe for supplying gas, a pressure regulator for controlling the supply pressure of the gas, a remote monitoring system for monitoring the constant pressure regulator and a central control station for receiving data from the remote monitoring system. In the method for monitoring the gas pipe, the step of requesting excavation detection frequency control from the patrol site to the central control station, and determining whether the requested control signal is a frequency generation request, if the frequency generation request, the voltage of frequency generation Supplying a signal, converting the signal into a predetermined band frequency corresponding to a control signal of the frequency generation request, generating and outputting the predetermined band frequency to the gas pipe, and receiving a frequency output from the gas pipe. Characterized in that it includes the step of detecting the excavation site location by The.

Here, if the control signal requested in the excavation detection frequency control request step is characterized in that it further comprises the step of blocking the frequency generation request.

Here, before the excavation detection frequency control request step, the step of detecting the state of the regulator, determining whether there is an abnormality of the state of the regulator and if it is determined that the state of abnormality of the regulator, transmitting the abnormal state data signal Its features are further included.

Here, the function of detecting the abnormal state of the pressure regulator is characterized in that it detects the pressure, potential, differential pressure, gas leakage, power outage and door state information supplied gas.

Here, the frequency of the predetermined band in the step of converting to the predetermined band frequency is characterized in that the control to occur differently depending on the soil type.

Here, the frequency of the predetermined band is characterized in that it is controlled to automatically convert to the 200 kHz ~ 200 kHz or 8.19 kHz ~ 40 kHz band.

Here, in the step of detecting the excavation site location, it is characterized in that the excavation site location detection and pipe state defects are displayed according to the frequency reception sensitivity.

Here, if the frequency reception sensitivity is 70% or more, the excavation work site location, if the reception sensitivity is 50% or less, the pipe covering defective state display, and if the reception sensitivity is 10% or less, it is characterized in that the contact display with other pipes.

According to the present invention, the excavation monitoring system and method thereof are provided with a frequency generator in a remote monitoring system for monitoring a gas pipeline constant pressure and output the frequency to the gas pipe, thereby causing an abnormality of the excavation site location and the pipe coating according to the sensitivity of the frequency received. You can monitor the presence.

In addition, the installation of a separate pipe exploration equipment can be prevented walking safety accidents and can increase manpower efficiency.

1 is an overall schematic diagram of monitoring the excavation construction position using the excavation construction monitoring system of the present invention.
2 is a view schematically showing the configuration of an excavation monitoring system according to an embodiment of the present invention.
Figure 3 is a flow chart for the excavation monitoring method according to an embodiment of the present invention.
Figure 4 is a flow chart for the pressure regulator detection mode of the excavation construction monitoring method of the present invention.

Hereinafter, an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

1 is an overall schematic diagram of monitoring the excavation construction position using the excavation construction monitoring system of the present invention. As shown in FIG. 1, a gas pipe 101 for supplying gas, a pressure regulator 102 for controlling the supply pressure of the gas, a far-field monitoring system 103 for monitoring the pressure regulator 102, and the far-field monitoring system And a central control station 104, an excavation site 105, and a receiving device 106 that receive data from the 103.

The far-field monitoring system (RTU) 103 is bonded (bonded by a wire) to the gas pipe exposed to the pressure regulator 102, and generates a frequency to output to the gas pipe.

The central control station 104 wirelessly controls the remote monitoring system 103, if necessary, and the remote monitoring system 103 receives this to control on / off voltage and frequency generation. At this time, the remote monitoring system 103 is a good grounding can send a frequency output accurately, and the built-in device for converting AC voltage to DC voltage can be provided as -12V ~ 24V.

When the frequency output flows from the remote monitoring system 103 to the gas pipe, it can be received by a nearby area patrol vehicle or other management office equipped with a receiving device. That is, the site where the excavation work is carried out is exposed to the gas pipe, the sensitivity of the frequency output to the ground is high. This reduces resistance due to road pavement and cement pavement, resulting in higher frequency output, which can be monitored to monitor the location of excavation sites or damage to pipe coatings.

2 is a view schematically showing the configuration of an excavation construction monitoring system according to an embodiment of the present invention. As shown in Figure 2, the excavation construction monitoring system is provided in the remote monitoring system, the wireless communication unit 201 for receiving a remote control signal from the outside, and the signal received by the wireless communication unit 201 as a digital signal A signal converting unit 202 for converting, a control unit 203 for receiving the converted digital signal to determine generation of a frequency signal of a predetermined band and outputting a power control signal, and converting the signal into a frequency signal of the determined predetermined band A frequency converter 204 and a power supply unit 205 for receiving a power control signal of the controller 203 and turning on / off power corresponding to the frequency signal of the predetermined band, and the gas pipe, And a frequency generator 206 for generating a frequency signal of a predetermined band converted by the frequency converter 204 and outputting the frequency signal to the gas pipe.

The wireless communication unit 201 receives a remote control signal of the central control station, and transmits a data signal whether there is an abnormality detected by the remote monitoring system, CDMA wireless communication, etc. may be applied, and switched to automatic mode or manual mode to receive can do.

The signal converter 202 may include an A / D converter for converting an analog signal received from the wireless communication unit into a digital signal, and a D / A converter for converting the digital signal into an analog signal.

The power supply unit 205 may further include a relay device for turning on / off the power for frequency generation of the excavation construction monitoring system.

The controller 203 controls to generate a frequency of a predetermined band in response to the remote control signal received from the central control office.

In more detail, the controller 203 controls the frequency of the predetermined band to be generated differently according to soil type. In other words, the frequency for the soil type is set in advance and controlled to be automatically converted into a frequency of 200 kHz to 200 kHz or 8.19 kHz to 40 kHz.

The frequency converter 204 receives a frequency generation control signal of a predetermined band from the controller 203 and converts the frequency generation control signal into a frequency of a predetermined band. The frequency converter 204 may include a means for converting an AC voltage into a DC voltage, and may provide a voltage corresponding to the frequency output while providing the AC voltage as -12V to 24V of the DC voltage.

The frequency generator 206 receives a frequency generating signal of a predetermined frequency band from the frequency converter 204 and generates a corresponding frequency. The generated frequency is output to the gas pipe connected to the frequency generator 206.

The frequency output from the frequency generator 206 is output through the gas pipe, and the frequency output is detected from the exposed gas pipe when it is located at the excavation site. At this time, the receiving device for receiving the output frequency may be installed on the patrol vehicle or a large building. Here, by determining whether or not the degree of sensitivity of the frequency received by the receiving device to detect the excavation site location or gas pipe failure. For example, when the frequency reception sensitivity is 70% or more, the site location of the excavation work is sensed, and when the reception sensitivity is 50% or less, the pipe covering defect status display may be displayed, and when the reception sensitivity is 10% or less, the other pipes may be displayed.

In addition, Figure 3 is a flow chart for the excavation construction monitoring method according to an embodiment of the present invention. As shown in Figure 3, the excavation construction monitoring method according to the present invention, first, the step of requesting the excavation detection frequency control from the patrol site to the central control station is performed (S301). In other words, if a patrol vehicle wants to know the location of the excavation work or if the frequency generation blocking request is required after the location is known, the patrol vehicle requests this from the central control center. The control signal is transmitted to generate a frequency to the remote monitoring system.

Then, it is determined whether the requested control signal is a frequency generation request (S302), and if the frequency generation request, supplying a voltage of frequency generation is performed (S303). Here, the voltage supply for frequency generation is controlled by the requested control signal.

Subsequently, the step of converting to a predetermined band frequency corresponding to the control signal of the frequency generation request is performed (S304). More specifically, in order to convert to the predetermined band frequency, the DC voltage is first provided by converting the voltage corresponding to the frequency output from -12V to 24V. That is, the frequency of the predetermined band and the voltage corresponding thereto are converted. Here, the frequency of the predetermined band is controlled to occur differently according to the soil type, and the frequency of the predetermined band is controlled to automatically convert to 200 kHz ~ 200 kHz or 8.19 kHz ~ 40 kHz band.

Subsequently, the step of generating the predetermined band frequency and outputting it to the gas pipe is performed (S305). Here, the gas pipe is bonded to the remote monitoring system and outputs the generated frequency.

Then, the step of detecting the excavation site location by receiving the frequency output to the gas pipe is performed (S306). In more detail, the excavation site location detection and piping status is displayed according to the frequency reception sensitivity. That is, when the frequency reception sensitivity is 70% or more, the excavation site location, the reception sensitivity is 50% or less, and the pipe covering defect status display may be displayed, and when the reception sensitivity is 10% or less, the other pipes may be displayed.

On the other hand, if the control signal requested in the excavation detection frequency control request step (S302) is determined to be a frequency generation blocking request (S307), the step of blocking the frequency generation is performed (S308). That is, after the frequency generation request, if the excavation construction site location is known or the pipe failure state is detected, the frequency generation blocking is requested.

4 is a flowchart illustrating a constant pressure detection mode of the excavation construction monitoring method of the present invention. As shown in FIG. 4, the constant pressure detection mode is a monitoring state performed before the excavation construction detection frequency control request step, and the step of constantly detecting the constant pressure state is performed (S401). Here, the function of detecting the abnormal state of the pressure regulator is to detect the pressure, potential, differential pressure, gas leakage, power outage and door state information supplied gas.

Then, the step of determining the abnormal state of the pressure regulator state is performed (S402). That is, it is determined whether there is an abnormality in the pressure, potential, differential pressure, gas leakage, power failure, and door state information supplied with the gas.

Subsequently, when it is determined that the static pressure is abnormal, the step of transmitting the abnormal state data signal to the central control center or the nearby management station is performed (S403).

While the present invention has been particularly shown and described with reference to exemplary embodiments, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, Of course, this is possible. Therefore, the scope of the present invention should not be limited to the described embodiments, but should be defined by the equivalents as well as the claims to be described later.

<Description of the symbols for the main parts of the drawings>
102 --- Constant pressure 103 --- Remote monitoring system
104 --- Central control station 105 --- Excavation site
106 --- Receiving device 201 --- Wireless communication unit
202 --- Signal converter 203 --- Controller
204 --- frequency converter 205 --- power supply
206 --- frequency generator

Claims (17)

In the gas piping facility including a gas pipe for supplying gas, a constant pressure regulator for controlling the supply pressure of the gas and a far-field monitoring system for monitoring the constant pressure regulator,
A wireless communication unit for receiving a remote control signal from the outside;
A signal converter converting the signal received by the wireless communication unit into a digital signal;
A controller which receives the converted digital signal and determines generation of a frequency signal of a predetermined band and outputs a power control signal;
A frequency converter converting the determined frequency signal into a frequency band;
A power supply unit which receives a power control signal of the controller and turns on / off power corresponding to the frequency signal of the predetermined band;
Is connected to the gas pipe, and includes a frequency generating unit for generating a frequency signal of the predetermined band converted by the frequency conversion unit to the gas pipe, excavation construction monitoring system, characterized in that provided in the far monitoring system . The method of claim 1,
The signal converter comprises an A / D converter for converting an analog signal into a digital signal;
An excavation monitoring system comprising a D / A converter for converting a digital signal into an analog signal. The method of claim 1,
The power supply unit excavation construction monitoring system, characterized in that it comprises a relay device for turning on / off the power. The method of claim 1,
Excavation monitoring system, characterized in that the control unit to control the frequency of a predetermined band occurs differently depending on the type of soil. The method of claim 1,
Excavation monitoring system, characterized in that for controlling the frequency of the predetermined band of the control unit to automatically convert to 200 kHz ~ 200 kHz or 8.19 kHz ~ 40 kHz band. The method of claim 1,
And the frequency converter comprises a means for converting an AC voltage into a DC voltage. The method of claim 1,
Excavation construction monitoring system further comprises a receiving device for receiving a frequency of a predetermined band output from the frequency generator. The method of claim 7, wherein
The receiving device is a digging construction monitoring system, characterized in that installed on top of the patrol vehicle or large building. The method of claim 7, wherein
An excavation work monitoring system, characterized in that for detecting the excavation site location or gas pipe failure status by determining whether the frequency reception sensitivity received by the receiving device. A method of monitoring a gas pipe by configuring a gas pipe for supplying gas, a pressure regulator for controlling the supply pressure of the gas, a remote monitoring system for monitoring the static pressure regulator, and a central control station for receiving data from the remote monitoring system,
Requesting excavation detection frequency control from the patrol site to the central control station;
Determining whether the requested control signal is a frequency generation request and supplying a voltage of frequency generation if it is a frequency generation request;
Converting to a predetermined band frequency corresponding to the control signal of the frequency generation request;
Generating and outputting the predetermined band frequency to the gas pipe;
Receiving excavation construction method comprising the step of detecting the excavation site location by receiving the frequency output to the gas pipe. The method of claim 10,
And digging off the frequency generation if the control signal requested in the excavation detection frequency control request step is a frequency generation blocking request. The method of claim 10,
Before the excavation detection frequency control request step,
Sensing the pressure regulator state;
Determining whether there is an abnormality in the state of the pressure regulator; And
If it is determined that the abnormal state of the pressure regulator, the excavation construction monitoring method further comprising the step of transmitting an abnormal state data signal. The method of claim 12,
The function of detecting the abnormal state of the pressure regulator excavation work monitoring method characterized in that the gas supply pressure, potential, differential pressure, gas leakage, power outage and door state information detection. The method of claim 10,
In the step of converting to the predetermined band frequency, the frequency of the predetermined band is excavated construction monitoring method characterized in that to control to occur differently according to the soil type. The method of claim 10,
The frequency of the predetermined band is a 200 kHz ~ 200 kHz or 8.19 kHz ~ 40 kHz band is controlled to automatically control the excavation work characterized in that the control. The method of claim 10,
In the step of detecting the excavation site location, the excavation construction site detection and piping status according to the frequency reception sensitivity characterized in that the excavation construction monitoring method. 17. The method of claim 16,
If the frequency reception sensitivity is 70% or more, excavation work site location, if the receiving sensitivity is 50% or less pipe coating failure status display, if the reception sensitivity is 10% or less display the contact with other pipes.

Images