KR101873371B1 - Detection system for construction in underground used laser range finder - Google Patents

Abstract

The present invention relates to a surveying system for an underground facility using a laser range finder, and more particularly, to a surveying system for underground facilities using an underground surveying instrument, , It is possible to control the actual information of the underground facility with high reliability by allowing the laser distance meter to guide the movement path of the underground surveying equipment, The present invention relates to a surveying system for surveying underground facilities using a laser range finder capable of outputting and analyzing various information of underground facilities in a required form.

Description

TECHNICAL FIELD [0001] The present invention relates to a surveying system for underground facilities using a laser range finder,

[0001] The present invention relates to a surveying system for surveying underground facilities using a laser distance measuring instrument in the field of underground facilities surveying technology, and more particularly, At the same time, it is possible to input the real time data to the management computer by using the GPS satellite and the mobile communication network, and to guide the movement path of the underground surveying equipment by using the laser distance measuring device, The present invention relates to a surveying system of underground facilities using a laser range finder capable of quickly and accurately performing maintenance and outputting and analyzing various types of information of underground facilities in a required form.

Due to the improvement of social, cultural and industrial level, there have been many underground facilities such as water and sewage pipes, pipelines, communication and power cables, various ducts and storage tanks including gas pipes in the ground near residential areas. Facilities exist.

In Korea, as of the end of 1997, it operates 1,300 km of high pressure piping network of 10 ~ 70㎏ / ㎠ and it is expected to reach 2,000km within a few years. It is necessary to carry out the management effectively by the records. However, since the accuracy is lacking, the degree of the damage caused by various incidents during the construction work is remarkably increasing.

There are many factors that cause damage to the safety of underground facilities. Among them, damage caused by excavation works (excavator, perforator), ground subsidence, electric corrosion due to leakage current from subway or other underground facilities have.

In order to establish countermeasures against this problem, it is essential to know the exact location of underground facilities first. In order to control the risk of excavation work, to be.

Conventionally, when an underground facility is buried, one of the measurement workers supports the target while another worker confirms the position of the target by using a public measuring instrument such as a total station on the ground But the problem is that it is difficult to expect accuracy.

In addition, the method of using a pipe locator is the most commonly used method. However, there is a disadvantage in that the accuracy is greatly lowered due to interference in places where facilities are buried in a complex manner, such as a city center. And now it has reached the level of using GPR probes.

This method detects various structure and stratum structure existing underground by using high-frequency electromagnetic wave and received signal processing method to detect the position of an object. However, in order to accurately analyze the result of the inspection, And it is very difficult to commercialize it because the results of the survey are very sensitive to the physical properties of the soil.

Such underground facilities can be managed by a geographic information system (GIS).

A method and system for providing a cadastre surveying service using a mobile communication terminal is disclosed in Korean Patent Publication No. 2007-0080374 (published on Aug. 10, 2007, 2007) as a technique for intellectual survey by the prior art.

1 is a functional block diagram of a geodesic surveying system using a geofith according to an embodiment of the prior art.

The geodetic surveying system according to the related art includes a mobile communication terminal 100, a radio access network 110, a mobile communication switching center 120, an SMS center 130, a home location register 135, a manganese interlock 140, a WAP gateway 145, an LBSP 150, a location server 152, a location center 154, a cadastral information server 180, an Internet registry server 190, And a cadastral map server 160.

The mobile communication terminal 100 accesses the U-cited information server 160 in order to receive the citation information, and the U-cited server 160 requests the user authentication.

The U-cadastral information server 160 identifies the location of the mobile communication terminal 100 that has succeeded in authentication and displays the location of the mobile communication terminal 100 on the electronic map of the corresponding area.

The U-cadastral diagram server 160 manages and provides cadastral map information and mapping electronic map information provided by the cadastral information server 180.

The U-cadence diagram server 160 inquires whether to use the land number and the boundary marking service by a UI (User Interface), and terminates the cadastral surveying service when the mobile communication terminal 100 does not use the service.

When the mobile communication terminal 100 uses the service, the U-cited server 160 accesses the cognitive information server 180 and transmits cadastral information including the lot number and the boundary of the lot where the mobile communication terminal 100 is located And provides the cadastral map information and the electronic map information in a matching and overlapping manner, and performs billing processing.

The U-cadastral information server 160 inquires whether the registered copy reading service is used or not by using the UI. If the service is not used, the cadastral surveying service is terminated. When the service is used, the U- Receives and transmits a copy of the registration number of the spot or place where the mobile terminal 100 is located, and performs billing processing.

The prior art has an advantage that information such as boundaries, cadastral maps, and the like can be quickly identified in a certain area or location.

However, the conventional art has a problem in that it can not manage information such as update and update of information about the ground including the terrain and artificial structures (facilities) in the ground.

Therefore, it is necessary to develop a technology to record and accurately update and manage information on underground facilities and terrain variation.

Korea Patent Registration No. 10-1364759 (2014.02.07.) "Surveying system of underground facilities using laser range finder"

The present invention has been created by the above-mentioned supplementary request, and it is intended to provide a system and method for enabling a user to download information obtained by measuring various underground facilities with an underground surveying equipment through a tablet, And it is possible to guide the route of the underground surveying equipment by using the laser range finder so that the information of the underground facilities can be managed with high reliability as well as the maintenance can be performed quickly and accurately and various kinds of information The present invention has been made to provide a surveying system for underground facilities using a laser range finder capable of analyzing and outputting the required information in a required form.

According to an aspect of the present invention, there is provided a method of installing an RFID tag, comprising: a tag unit attached to a surface of an underground facility, storing underground installation information and outputting the information in an RF ID system; An underground surveying equipment for reading the underground installation information of the tag unit, confirming coordinate information from received GPS information, and outputting underground installation information and coordinate information; A survey target in which the other end is exposed to the ground with one end connected to the underground facility; A laser distance measuring instrument mounted on an underground measuring instrument and irradiating a laser beam to a measurement target and analyzing the position information to track the movement path; A tablet for receiving the underground installation information of the underground surveying equipment, operating the downloaded underground surveying application, and displaying the information on the groundwater surveying equipment; A mobile communication network connecting with a tablet through a mobile communication method and allocating a communication path; A management computer that is a server having a plurality of processing modules for accessing a mobile communication network, managing geographic information, providing an underground survey application, storing underground installation information, and outputting information analyzed by a statistical program, The underground survey equipment generates a frequency control signal to be transmitted to the tag unit and recognizes data received from the tag unit. A transmitter configured to mix a frequency of the frequency variable controlled by the control unit, a mixer that mixes the frequency control signal and the variable frequency with each other, and an amplifier that amplifies the modulated signal of the mixer; A low noise amplifier for low noise amplification of the signal of the tag section, a phase shifter for changing the variable frequency of the transmission section by 90 degrees, an output signal of the phase shifter frequency signal and the low noise amplifier, demodulating it into an I signal, A mixer for mixing the output signal of the amplifier and demodulating it into a Q signal, a low-pass filter for filtering the output I / Q signal of the mixer, an amplifier for amplifying the output signal of the low-pass filter, Pass filter and an analog / digital converter for converting an output signal of the amplifier into a digital signal, wherein the measurement target includes a stator of a magnetic material mounted on an underground facility, and a hinge coupled to a top of the stator, Wherein the underground survey equipment is configured such that the laser range finder is located at a distance from the survey target A first motor and a second motor for controlling forward and backward, leftward and rightward rotations by controlling an underground surveying equipment control unit and an underground surveying equipment control unit for controlling the moving direction of the underground surveying equipment by inputting and analyzing signals received from the scanned laser beam, Wherein the tablet includes a first wireless unit that wirelessly connects to the underground probe and transmits and receives data including underground installation information; A tablet control unit connected to the first wireless unit, downloading and operating the underground survey application, requesting download of the facility information, and controlling overall operation of the tablet; A second wireless unit receiving the pieces of information on the basis of the control of the tablet control unit; A third wireless unit for transmitting and receiving the data signal to the mobile communication network under the control of the tablet control unit; An information storage unit for storing the facility information based on the control of the tablet control unit; And a touch display unit for outputting information on facility facilities under the control of the tablet control unit and for inputting information and commands by touching. The tablet is connected to a management computer to download and operate an underground surveying application, The management information or the coordinate information is inputted and the corresponding geographical information is downloaded and displayed, and the underground facility information is read and stored by accessing the underground surveying equipment, the site information is inputted and stored, and the real time input of the measured site information is set If the real-time input setting is not in the real-time input setting state, the on-line information is input to the management computer, and the management computer inputs the coordinate information of the location where the underground facilities are buried and the management number for each location Facility connected with Giaez information, underground survey apps and statistics Stores and stores statistical programs, downloads underground facilities GIAES information for underground facilities by streaming method, stores underground installation information and measured site information from the tablet, , A surveying system for an underground facility using a laser range finder that outputs underground installation information, measured field information, and facility classification information by a statistical program operation; The management computer includes a housing 5100. The housing 5100 is formed in a rectangular box shape and a door DR capable of being opened and closed is provided on the front face of the housing 5100. On both sides of the housing 5100, A unit 5110 is provided; The air blowing unit 5110 includes an air blowing case 5120 and an air outlet OUT is formed on the air blowing case 5120 and an air inlet IN is formed on a lower side of the air blowing case 5120, The introduction guide 5140 is arranged at an interval on the lower side of the partition 5130 so as to prevent the exhaust port OUT from communicating with the lower space by the partition 5130, And an inlet 5150 for introducing the silicon dioxide constituting the air gap filter is formed by the insertion guide 5140. The inlet 5150 is sealed by an inlet door 1260 that can be opened and closed, The end of the feed hopper 5170 is disposed at the upper end of the feed hopper 5170 and the feed hopper 5170 is communicated with one side of the screw feeder 5180 so that the powdered silicon dioxide moves on the feed guide 5140, (5170) to the screw feeder (5180) Type filter 5190 is provided on the lower side of the inlet IN and the particle size of the silicon dioxide powder SI is formed larger than the inter-ring spacing of the ring type filter 5190, The ring type filter 5190 is fitted in the fixing member 5200. The fixing member 5200 is screwed to the inner wall surface of the air blowing case 5120, A filtration air supply hole 5210 is formed at a lower side of the side where the inlet port 5150 is formed and the filtration air supply hole 5210 is communicated with the inside of the housing 5100 through a supply pipe 5220, And a lower plate 5230 is installed below the ring-type filter 5190; A charging unit 6000 is further provided on the side surface of the air blowing case 5120 to supply a predetermined amount of silicon dioxide powder and the charging unit 6000 is connected to the charging funnel 6100 and the lower end of the charging funnel 6100 A feed motor 6300 installed in a space defined in one side of the inside of the feed cylinder 6200 and a feed screw 6400 connected to the feed motor 6300 and arranged in the feed cylinder 6200, A discharging hole 6500 formed in the bottom surface of the end portion of the conveying cylinder 6200 and a discharging opening 6700 for opening and closing the discharging hole 6500 in a fixed quantity and discharging the discharging hole 6500, A fixing bracket 6900 coupled to an end of the transfer cylinder 6200 to fix the discharge cylinder 6800 and a fixing bracket 6900 disposed at a lower portion of the discharge hole 6500 and connected to the inlet 5150 And a discharge guide 6600; The filtered fine particles including the silicon dioxide powder separated and removed by the air purge are stored in the discharge tray 7000 and the discharged fractions collected by the discharge tray 7000 are discharged through the discharge finishing pump 7100 to the hydro- And the hydrocyclone 7200 receives the discharge of the foreign material mixture to separate the silicon dioxide powder and the fine foreign substance by the specific gravity difference in the cyclone manner and the upper part of the hydrocyclone 7200 The silicon dioxide powder SI dropped to the lower portion of the hydrocyclone 7200 is supplied to the inlet 5150 through the metering pump 7400 ≪ / RTI > The air purge unit 5400 for purifying the air includes a rectangular nozzle 5410 in which a plurality of spray holes 5420 are formed and a tip end thereof is closed and a connection portion (not shown) formed in the lower end of the nozzle portion 5410 5430); A binding portion 5440 in which a spray hole 5420 is not formed is further formed at the boundary between the nozzle portion 5410 and the connection portion 5430; A cylindrical rubber tube 5450 is fitted to the nozzle unit 5410; A clamp 5460 for fixing a part of the lower end of the rubber pipe 5450 is installed in the coupling part 5440; Wherein each corner of the nozzle unit 5410 is chamfered and a diffusion unit 5422 having a larger diameter is further formed in the injection hole 5420. [ to provide.

According to the present invention, it is possible to download information obtained by measuring various underground facilities with an underground surveying device through a tablet, input real time data to a management computer using a geosust satellite and a mobile communication network, input using a laser distance meter It is possible to manage the actual information of underground facilities with high reliability by guiding the moving route of underground surveying equipment, and also it is possible to quickly and accurately perform maintenance and to output various kinds of information of underground facilities in required form Effect can be obtained.

1 is a functional block diagram of a system for providing a cadastral surveying service using a mobile communication terminal according to an embodiment of the prior art.
2 is a functional block diagram of a surveying system for underground facilities using a laser distance measuring device according to an embodiment of the present invention.
3 is a functional block diagram of an underground surveying instrument according to an embodiment of the present invention.
Fig. 4 is a configuration diagram showing an example of the installation of a survey target according to an embodiment of the present invention. Fig.
5 is a plan view illustrating a moving path of an underground surveying instrument equipped with a laser distance measuring instrument according to an embodiment of the present invention.
6 is a functional block diagram of a laser distance measuring apparatus according to an embodiment of the present invention.
7 is a detailed functional configuration diagram of a tablet according to an embodiment of the present invention.
FIG. 8 is a flowchart for explaining an operation example of a management computer according to an embodiment of the present invention.
9 is a flowchart illustrating an example of operation of the tablet according to an embodiment of the present invention.
FIG. 10 is a state explanatory diagram showing a management number assigned to an underground facility according to an embodiment of the present invention.
FIG. 11 is an illustration of the surrounding environment information of an underground facility analyzed and output by statistical program operation according to an embodiment of the present invention.
FIG. 12 is a state information diagram of an underground facility analyzed and output by statistical program operation according to an embodiment of the present invention.
FIG. 13 is an illustration of standard information analyzed and output by statistical program operation according to an embodiment of the present invention. FIG.
14 is an exemplary view of a housing constituting a management computer according to the present invention.
Fig. 15 is an exemplary view showing a detailed structure of a blowing unit provided in the housing of Fig. 14;
Fig. 16 is an exemplary view of a silicon dioxide input unit installed in the housing of Fig. 14;
Fig. 17 is a configuration diagram of a silicon dioxide recycling unit provided in the housing of Fig. 14; Fig.
FIG. 18 is an exemplary view showing a backflow prevention structure of an air purge unit provided in the housing of FIG. 14;

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

Before describing the present invention, the following specific structural or functional descriptions are merely illustrative for the purpose of describing an embodiment according to the concept of the present invention, and embodiments according to the concept of the present invention may be embodied in various forms, And should not be construed as limited to the embodiments described herein.

In addition, since the embodiments according to the concept of the present invention can make various changes and have various forms, specific embodiments are illustrated in the drawings and described in detail herein. However, it should be understood that the embodiments according to the concept of the present invention are not intended to limit the present invention to specific modes of operation, but include all modifications, equivalents and alternatives falling within the spirit and scope of the present invention.

2 to 13, a surveying system for an underground facility using a laser distance measuring instrument according to the present invention includes a GSIS satellite 300, a tag unit 1000, an underground surveying equipment 2000, a surveying target 400 A laser distance meter 500, a tablet 3000, a mobile communication network 4000, and a management computer 5000, which is a kind of server.

The GPS (Global Positioning System) satellite 300 is composed of 24 or more satellites operating at an altitude of 20,000 to 25,000 kilometers (Km) above the ground, preferably at an altitude of about 20,183 km on average, The satellite 300 is a global positioning system that broadcasts a GSAS information signal free of charge, which can be analyzed by sea level, longitude, latitude and time.

The GSPS satellite (300) is produced and operated in the United States, and China, Russia and Europe are known to operate their own systems.

The tag unit 1000 uses RFID (Radio Frequency Identification) and is also referred to as a tag. The tag unit 1000 includes a coil, a capacitor, and an EEPROM (Electrically Erasable Programmable Read-Only Memory) It can be installed at intervals of ~ 10m.

A tag is a request for an antenna to an RFID chip. The tag can transmit data stored in the chip wirelessly through an antenna and can be received by an RFID reader or a scanning device having the same frequency as that of the antenna. The FRID chip can store various information and can update the stored information using the FRID reader.

The tag uses either one selected from radio frequencies between 125 KHz and 915 MHz, and has an active and passive scheme.

The active type has a built-in battery or power supply, and can transmit and receive data to a distance of about 30 meters. The passive type receives operating power from the radio frequency transmitted from the reader, and is about 30 centimeters to 6 meters It can transmit and receive wirelessly to the distance.

The tag unit 1000 is fixed to the upper surface of the underground facility 200 buried in the underground and includes a standard of the underground facility 200, buried date, buried level and coordinate information, And the information stored in the tag chip in the following description will be referred to as 'underground installation information'.

Therefore, the manager who manages the underground facility 200 can install one or more tag units 1000 in the underground facility 200 embedded in a predetermined distance unit or a predetermined area unit, and can assign and manage a designated management number have.

8 illustrates a state in which a location where an underground facility 200 is installed on a map is managed and a management number is assigned and managed on a constant area basis.

Since a plurality of tag units 1000 are installed in the underground facilities 200, a unique serial number for identifying each of them is assigned, and when the stored information is output, the corresponding serial number is output together.

The underground surveying apparatus 2000 is configured to read or scan 'underground installation information' stored in the tag unit 1000 and to move in a direction designated by the user along a surface of the ground using wheels mounted on the bottom of the main body.

The underground probe apparatus 2000 receives and analyzes the geospatial information transmitted from the geophysical satellite 300 and stores the geospatial information as coordinate information including the longitude, latitude, altitude, and time at the current location, And stores the coordinate information in association with the coordinate information at the corresponding position, and at the same time, can transmit the output according to a request of the terminal or the tablet 3000 connected by the Wi-Fi system.

3, the underground probe apparatus 2000 includes a control unit 2100, a transmitter 2200, and a receiver 2300. The transmitter 2200 controls the frequency of the frequency by the controller 2100 A mixer 2202 for mixing the frequency control signal output from the control unit and the variable frequency of the toilet 2201 to modulate the frequency control signal output from the control unit 2201, and a modulator 2202 for modulating the modulated signal output from the mixer at a predetermined level And an amplifier 2203 for amplifying the amplified signal.

Here, the toilet 2201 mainly uses a PLL, and the transmitter 2200 is modulated by an ASK scheme that directly modulates a frequency control signal with a transmission frequency.

The receiver 2300 includes a low noise amplifier 2301, a phase shifter 2302, mixers 2303 and 2304, low pass filters 2305 and 2306, amplifiers 2307 and 2308, high pass filters 2309 and 2310, And analog / digital converters 2311 and 2312.

The low noise amplifier 2301 low-noise amplifies a signal received from the tag unit 1000 and the phase shifter 2302 changes the variable frequency output from the toilet 2301 by 90 degrees with respect to the frequency of the transmitter 2200 .

The mixer 2303 mixes the frequency signal output from the phase shifter 2302 with the output signal of the low noise amplifier 2301 and demodulates the mixed signal into a signal. The mixer 2304 receives the variable frequency And the output signal of the low noise amplifier 2301, and demodulates the signal into a Q signal.

The low-pass filters 2305 and 2306 perform low-pass filtering on the I / Q signals output from the mixers 2303 and 2304, respectively, and the amplifiers 2307 and 2308 amplify the signals output from the low- The high pass filters 2309 and 2310 high-pass filter the I / Q signals output from the mixers 2303 and 2304, respectively.

The analog / digital converters 2311 and 2312 convert the signals output from the amplifiers 2307 and 2308 into digital signals.

The control unit 2100 controls the variable frequency of the toilet 2201 and generates a frequency control signal to be transmitted to the tag unit 1000. The control unit 2100 analyzes the digital signal output from the receiving unit 2300, And recognizes the data received from the tag unit 1000 based on the analysis result.

4, the measurement target 400 includes a stator 410 made of a magnetic material so that the other end is exposed to the ground in a state where one end of the measurement target 400 is bound to the underground facility 200, And a rod 430 installed to be rotatable via a hinge 420. [

The measurement target 400 is configured to be adjustable in length irrespective of the depth of the underground facility 200. A reflector (not shown) is attached to the upper end of the rod 430, And the bar code or the like to which the position of the underground facility 200, the coordinate information, the control number, and the like are attached may be scanned.

5 and 6, the laser range finder 500 is mounted on the upper part of the upper part of the underground surveying equipment 2000 and moves along with the underground surveying equipment, The position information can be analyzed by irradiating the installed target 400 with a laser beam.

That is, the signal detected by the laser range finder 500 is received and analyzed by the underground survey equipment control unit 510 installed in the underground survey equipment 2000, and then the first motor 520 and the second motor 530 are connected to each other, It is possible to control the movement of the wheels of the underground surveying equipment 2000 in the forward and reverse directions or in the left and right directions.

The tablet 3000 is a portable simple computer (PC) using a touch-type keyboard without a keyboard and a mouse for inputting information, and is superior to a smartphone for mobile communication, It is general that the function is lower than the computer used for business.

The tablet (3000) is portable and easy to carry because it is small and light, it can be operated by downloading application programs such as apps (APP) and other operating systems (OS) And can transmit and receive music, video, and other data files.

The tablet 3000 has a function of wirelessly receiving mobile communication signals such as CDMA, W-CDMA and TDMA, Wi-Fi communication, and a GPS information signal broadcasted by the GPS satellites 300, The function of the method is included in a generally known technique.

That is, the tablet 3000 wirelessly connects to the underground probe 2000 through a Wi-Fi system, connects to the mobile communication network 4000 through a mobile communication system, and connects with the satellite SAT 300 at a corresponding frequency of the satellite .

7, the tablet 300 includes a first wireless unit 3100, a tablet control unit 3200, a second wireless unit 3300, a third wireless unit 3400, a GIAES information storage unit 3500, and a touch display unit 3600.

The first radio unit 3100 wirelessly connects with the underground survey equipment 2000 through the Wi-Fi system, and transmits and receives various types of information data including 'underground installation information'.

The underground installation information received by the first wireless unit 3100 is stored in an area allocated to the tablet 3000 in a state of being linked with information such as coordinate information and time analyzed by analyzing the GPS information.

The tablet control unit 3200 controls the first wireless unit 3100 to receive the 'underground installation information' and controls the third wireless unit 3400 to download and install the 'underground application' And displays and monitors the operation of each functional unit constituting the tablet 3000 and outputs the respective control signals.

The second wireless unit 3300 wirelessly connects to the GSIS satellite 300 by controlling and monitoring the tablet control unit 3200 and receives the GSPS information.

The GPS information received by the second radio unit 3300 is provided to the tablet control unit 3200 and is analyzed with information such as latitude, longitude, altitude, and time at the current location.

The third wireless unit 3400 is connected to the management computer 5000, which is a server having a plurality of processing modules, by accessing the mobile communication network 4000 and requesting the allocation of the communication path by the control and monitoring of the tablet control unit 3200 And transmits and receives a data signal to and from the management computer 5000 through a communication path set to be allocated and occupied.

The data signal transmitted by the third wireless unit 3400 in connection with the management computer includes the facility information, the underground survey app, the underground installation information, and the environment information.

The geographic information storage unit 3500 stores and manages facility geographic information in an area allocated to the user by controlling and monitoring the tablet control unit 3200. The geographic information storage unit 3500 also stores various kinds of information including underground installation information, Are stored in the allocated areas and output by searching.

The touch display unit 3600 visually displays various data including the facility information by controlling and monitoring the tablet control unit 3200, and also receives specific commands, information, and data by touch.

The tablet 3000 accesses the management computer 5000 through the mobile communication network 4000 and downloads and installs an 'underground survey app' program. The tablet 3000 wirelessly connects to the underground survey equipment 2000, Stored or displayed.

App (APP) is a small application program called an application. It is a small program with a small data size. It is installed and operated on a smart phone or a tablet.

The tablet 3000 installed with the underground survey application program is automatically connected to the management computer 5000 by the corresponding command inputted by the touch of the touch display unit 3600 and is connected to the tablet 3000 by the transmission and reception of the data signal And a function of updating the underground survey application in operation to a new version or outputting the stored underground installation information and the actually measured environment information together with the coordinate information at the corresponding position to be transmitted to the management computer 5000 .

On the other hand, the tablet 3000 in which the underground survey app operates is connected to the management computer 5000 and receives coordinate information designated by the tablet 3000 or a control number of the underground facility or a control number Can be confirmed by the user by downloading 'facility GIAES information' for the underground facility 200 corresponding to the coordinate information in a streaming manner and outputting it to the corresponding display unit.

The streaming method has an advantage in that it can be played back in real time in a manner of reproducing with a slight time difference while downloading.

The normal download method reproduces the file after downloading 100% of the file.

The tablet 3000 is connected to the underground surveying equipment 2000 and stores the received underground installation information in the allocated area and stores the surrounding environment information in which the underground surveying equipment 2000 or the underground facility 200 is installed, The information on the installed state of the underground facility 200, and the confirmed standard information of the underground facility 200 are input through the touch display unit 3600, stored in the allocated area, and transmitted to the management computer 5000 in a linked state.

The underground facility 200 includes a sewer pipe, a water pipe, a communication pipe, an electricity transmission and distribution pipe, a gas pipe, a pipeline, and a manhole.

The environmental information that constitutes the environmental information includes management offices, lot numbers, administrative offices, etc. The status information includes destruction of underground facilities, occurrence of rust, failure, operation, etc., and standard information includes name, installation date, , Manufacturer, type, material, size, aperture, direction of rotation, and the like.

The mobile communication network 4000 establishes wireless connection with the tablet 3000 in the service area in any one of mobile communication systems including CDMA, WCDMA, and TDMA, and switches communication paths with the designated one upon request. And transmits and receives the data signals of

The management computer 5000 accesses the mobile communication network 4000, stores and updates the facility information of the underground facility 200, and provides the underground survey application as a download according to the request of the tablet 3000.

Also, the underground installation information is received from the tablet 3000 and stored in the allocated area, and the analysis information is outputted by the operation of the statistical program.

The analysis information output by the management computer 5000 by the statistical program includes ambient environment information, status information, and standard information of the underground facility 200, and the ambient environment information is as shown in FIG. , The status information is the same as in Fig. 12 attached as an embodiment, and the standard information is as shown in Fig. 13 attached as an embodiment.

Hereinafter, the method of operating the underground facilities by the management computer 5000 will be described. The coordinate information of the location where the underground facilities 200 are buried, the underground facilities are buried, and the management numbers for each location, And stores and manages the installed facilities GIAES information in the allocated area. Here, management is described as including an update.

The management computer 5000 manages statistical programs by the corresponding control commands of the operator or the user.

Therefore, the management computer is set to the standby state.

The management computer 5000 judges whether the tablet 3000 is connected. When the tablet is connected, the management computer 5000 supplies the requested area or underground facility management number while providing the coordinate information on which the tablet is currently located, Download and provide information in a streaming manner.

If the management computer 5000 determines that environment information actually measured on the field is input from the tablet, the management computer 5000 stores the updated information in the allocated area.

The input of information includes information input by the tablet 3000 in a real-time connection state via the mobile communication network 4000 and information input by the tablet directly connected to the management computer 5000 on-line.

The management computer 5000 analyzes the control command input by the manager or the operator or the control command input from the connected tablet, analyzes and classifies the stored information and statistically processes the stored information in a designated format Output.

The information stored here includes the information on the facilities GIAESES and the environmental information measured in the field.

Also, the underground survey app is downloaded and installed from the management computer via the mobile communication network 4000 to the management computer 5000 through the streaming method.

In order to simplify the explanation, it is assumed that the tablet is connected to the management computer via the mobile communication network.

The tablet 3000 displays coordinate information of a site where geospatial information received from the geophysical satellite 300 is analyzed at a site where an underground facility 200 to be actually measured is installed or a management number of an underground facility identified from a map .

Here, a map showing the management number of the underground facility 200 is shown in FIG. 9 as one embodiment.

The tablet 3000 accesses the management computer via the mobile communication network and downloads the facility information corresponding to the coordinate information on the site or the management number of the underground facilities in a streaming manner and stores the information in the allocated area and displays it on the touch display unit 3600 And displays it.

The tablet 3000 may output multimedia information when the facility information is multimedia, and may be connected to the underground surveying device 2000 through a wireless connection using a WiFi method, and read from the tag unit 1000, The underground installation information is read (read) and stored in the allocated area.

The tablet 3000 stores measured environment information related to underground facilities in the field and stores the information in an allocated area. The environment information includes ambient environment information, status information, and standard information.

The tablet 3000 analyzes the set state and determines whether or not environment information actually measured in the field is set to be updated in the management computer in real time.

If it is determined by the tablet 3000 that the environment information is set to be input in real time to the management computer, the management computer 5000 accesses the management computer 5000 via the mobile communication network 4000 in real time.

On the other hand, if it is determined by the tablet 3000 that the environment information is directly input to the management computer on-line, the management computer is connected to the on-line.

The tablet 3000 outputs environment information measured in the field and transmits the environment information to the management computer 5000 connected in real time or online.

The present invention having the above-described configuration can reduce the input error of information and can update and correct the information in real time by downloading the GIS information of the underground facility being managed using the tablet and directly inputting coordinate information, It is possible to generate various statistical data by analyzing existing management information and actual update management information of underground facilities.

In addition, the management computer 5000 having a plurality of processing modules includes the enclosure 5100 illustrated in Figs. 14 to 15.

At this time, since the processing modules need to process a large amount of information, a large amount of heat is generated, thereby preventing deterioration and preventing dust from being scattered during cooling, thereby shortening the life span of the management computer 5000 So that the function as a server is faithfully performed.

To this end, the housing 5100 is formed in a rectangular box shape, and a door DR capable of being opened and closed is provided on the front surface thereof, and a blowing unit 5110 is provided on both sides of the housing 5100.

The air blowing unit 5110 is configured to cool the internal heat of the enclosure 5100 to prevent the electronic parts mounted on the mounted process module from being deteriorated and to prevent malfunction due to dust.

Particularly, in the present invention, the concept of a pore membrane filter capable of automatically eliminating the clogging of the filter is used by using a filter, so that a semi-permanent lifetime can be ensured while a filter is fixedly constructed without replacement .

Further, an air outlet OUT is formed on the upper side of the air blowing unit 5110, and an air inlet IN is formed on the lower side.

The air blowing unit 5110 includes a blowing case 5120.

The inside of the air blowing case 5120 is divided by the partition 5130 so that the air outlet OUT is separated from the lower space.

The inlet guide 5140 is arranged on the lower side of the partition wall 5130 and the inlet guide 5140 is connected to one side of the inlet case 5120 so that the silicon dioxide constituting the air- (5150) is formed.

The end of the insertion guide 5140 is disposed at the upper end of the loading hopper 5170 and the loading hopper 5170 is connected to one side of the screw feeder 5180.

Therefore, the silicon dioxide introduced through the inlet port 5150 moves along the insertion guide 5140 and is guided to the screw feeder 5180 through the inlet hopper 5170, which is in powder form.

In addition, a ring-type filter 5190 is provided on the lower side of the inlet IN. The size of the silicon dioxide powder SI must be larger than the inter-ring spacing of the ring-type filter 5190.

Thus, the silicon dioxide powder SI is piled up on the peripheral surface of the ring-type filter 5190, thereby realizing a kind of void film filter.

That is, the filter of the present invention has a dual structure such as a cavity filter-ring filter.

At this time, the ring type filter 5190 is fitted to the fixing member 5200, and the fixing member 5200 may be screwed to the inner wall surface of the air blowing case 5120.

A filtering air supply hole 5210 is formed on one side of the air blowing case 5120, preferably on the side lower side where the inlet 5150 is formed, and the filtering air supply hole 5210 is connected to the supply pipe 5220 To communicate with the inside of the housing (5100) to supply the filtered air.

That is, since a suction pressure is formed inside the housing 5100 by the exhaust air pressure of the exhaust fan (FAN) through the exhaust port (OUT), the outside air filtered through the filtered air supply hole 5210 is naturally sucked will be.

A check valve 5212 is provided in the filtered air supply hole 5210. The check valve 5212 is normally open so that it is closed only when the air purge unit 5400 is operated. .

The powder supply port SUP formed below the screw feeder 5180 is configured to be openable and closable by a sealing plate 5300. The sealing plate 5300 is a plate- And is installed so as to be drawn out through one side face.

To this end, a plate driving motor 5310 is installed on one side of the air blowing case 5120, a pinion 5320 is fixed to a motor shaft of the plate driving motor 5310, And a rack (not shown) having a constant width is formed on the upper surface of the one end, so as to be coupled with the pinion 5320.

Accordingly, the closing plate 5300 is drawn in and out according to the rotational direction of the plate driving motor 5310, and the operation of the plate driving motor 5310 is performed by closing the closing The plate 5300 must be moved so as to block the powder feed port SUP.

With such a construction, external pollutants such as dust are filtered by the pore filter, and the pores of the ring filter can not be sealed.

Since the void film filter is in powder form, after the use of the lower plate 5230 to some extent, the silicon dioxide powder (SI) accumulated on the lower plate 5230 is discharged to the open lower side of the air blowing case 5120 and a new silicon dioxide powder (SI) A semi-permanent filtering operation can be performed by replacing only the powder without replacing the ring-type filter 5190.

The air purge unit 5400 is installed inside the ring type filter 5190 and is configured to purge the air according to a control signal of the system.

In this case, when the air purge is performed, the lower plate 5230 must be in a state of being removed, and the air gap filter made of the silicon dioxide powder (SI) accumulated around the ring-type filter 5190 is separated and separated by the air purge, (5120).

Therefore, the clogging of the ring-type filter 5190 can be automatically canceled.

At this time, the lower plate 5230 may also be automated to be simultaneously drawn and received by a driving source such as a motor, a rack and a pinion, and the sealing plate 5300.

Then, when the air purging is completed, the backflow prevention valve 5212 and the mechanisms that have been operated for air purge return to their original state.

In addition, the filtered fine particles including the silicon dioxide powder separated and removed by air purge may be collected and sieved, and then only the silicon dioxide may be separated and reused.

In this way, the filter can be periodically filtered while preventing clogging through air purging, so that it can be used semi-permanently. Of course, carbon dioxide powder (SI) should be supplemented occasionally.

In addition, the air ventilation case 5120 and the sealing plate 5300 are required to prevent the adhesion of foreign substances during air purging to ensure slipperiness, i.e., surface activity, so as to enhance the non-sticking property of silicon dioxide, and further to strengthen chemical resistance and durability do.

To this end, in the present invention, a reinforcing coating layer is further formed on outer surfaces of the air blowing case 5120 and the sealing plate 5300.

At this time, the reinforcing coating layer may be coated by a known coating method such as a spray method.

This reinforcing coating layer comprised 2.5% by weight of a water-soluble acrylic-modified urethane-alkyd resin, 3.0% by weight of zinc (Zn (NO ₃ ) ₂ .6H ₂ O), 2.5% by weight of 1-chloro-2,3- 2.5% by weight of methyltrimethoxysilane, 3.5% by weight of an allophane powder having a particle size of less than 0.1 μm, 5.5% by weight of a resin solution having a polyurethane resin aqueous with decyl ether, and CH ₃ COONa and 3H ₂ O) 4.0% by weight, and 2.0% by weight formic acid, and with the zirconium oxide powder having a particle size of less than 6.0% 0.1㎛, thiocyanate copper 5.0 wt%, MEHEC (methylethylhydroxyethylcelluloe) 2.5% by weight , 8.5 wt% of a resin-silica composite, and the rest of the polycarbonate resin.

Here, the water-soluble acrylic-modified urethane-alkyd resin is added in order to impart adhesiveness to enhance adhesion with a material and to exhibit super water repellency.

In addition, zinc sulfate is added to enhance thermal stability by increasing the heat retaining force due to the formation of eutectic points. 1-Chloro-2,3-epoxypropane is a chlorine-based material having high reactivity and is used for stabilizing the reaction of the composition And methyltrimethoxysilane is added to enhance durability by enhancing the bonding force between emulsified materials by hydrophobicity.

In addition, alophene powder is a clay mineral generated from the weathering process of volcanic ash, which is an exceptionally amorphous clay powder which has no crystal structure and is added to enhance the VOC abatement effect. The resin liquid in which the polyurethane resin is decolorized with ether It is used to maintain adhesion and weatherability.

In addition, sodium acetate is added to enhance durability and heat resistance by strengthening the heat retention due to eutectic point formation, and formic acid is prepared by adding glycerin to the acid, .

The zirconium oxide powder is an amorphous white powder which is added as a kind of ceramics having a melting point of 2.677 캜, a density of 5.6 g / cm ³ and a Mohs hardness of 7 in order to increase the hardness and to strengthen the wear resistance, and the thiocyan copper is added to the copper- , And MEHEC (methylethylhydroxyethylcellulose) is added as a cellulose derivative composed of anhydrous glucoside monomer chain to enhance surface activity and chemical resistance.

In addition, the resin-silica composite is heated at a temperature of 600-800 ° C. in a state in which the colloidal silica and the acrylic polymer are immersed in a mixture of the acrylic polymer and the acrylic polymer in a weight ratio of 1: 1, To have a resin-silica composite form according to condensation.

At this time, the condensation reaction is carried out as follows, and the film adhesion and the texture density are drastically improved.

[Colloidal silica: - (HO-Si-OH-) n]

[Acrylic polymer: CH2CCH3CO-OH]

[- (HO-Si-OH- ) n + CH2CCH3CO-OH = - (HO-Si-O-CH2CCH3CO) - n + H 2 O]

In addition, the polycarbonate resin is added for high transparency and high hardness, strength maintenance and durability improvement.

A sample having such a coating layer was prepared, and water resistance was first tested to confirm the surface condition.

In the water resistance test, the sample pipe was immersed in a constant temperature water bath (60 ° C.), and the surface state was checked in units of 500 hours. As a result, no microscopic whitening, cracks, or white rust occurred.

In order to confirm the heat stability, the sample pipe was placed in a beaker, sealed (60 ° C), left in a dry oven for 5 days, and the state was measured. As a result, there was no surface reaction such as gelation.

In addition, to confirm the corrosion resistance, the sample pipe was tested according to KS-D-9502 (standard 240 hr) salt spray test method, and the result was good without occurrence of white rust.

Further, in the present invention, as shown in FIG. 16, a charging unit 6000 may be further provided on the side surface of the air blowing case 5120 so as to supply silicon dioxide in a fixed amount.

The feed unit 6000 includes a feed funnel 6100, a feed cylinder 6200 connected to the lower end of the feed funnel 6100 and a feed motor 6300 installed in a space defined in one side of the feed cylinder 6200, A conveying screw 6400 connected to the conveying motor 6300 and arranged in the conveying cylinder 6200, a discharge hole 6500 formed in the bottom surface of the end of the conveying cylinder 6200, A discharging cylinder 6800 for driving the discharging cylinder 6700 and a discharging cylinder 6800 fixed to the end of the conveying cylinder 6200 to fix the discharging cylinder 6800, And a discharge guide 6600 disposed at a lower portion of the discharge hole 6500 and connected to the discharge port 5150.

Therefore, if the silicon dioxide powder is poured into the input funnel 6100, the transfer screw 6400 driven by the transfer motor 6300 moves the charged silicon dioxide powder to the discharge hole 6500, and the discharge cylinder 6800 And operates in accordance with the control signal of the system control unit to open and close the discharge plate 6700 to supply the supplied silicon dioxide powder to the inlet 5150 in a fixed amount.

Thus, supply of the silicon dioxide powder can be smoothly performed.

In addition, the filtered fine particles including the silicon dioxide powder separated and removed by the air purge are accommodated in the discharge tray 7000 as shown in FIG. 17, and the discharged fraction collected by the discharge tray 7000 is discharged to the discharge finishing pump 7000. [ And is transferred to the hydrocyclone 7200 through the pipe 7100.

At this time, the hydrocyclone 7200 receives the discharge of the foreign substance mixture, and separates the silicon dioxide powder and the fine foreign substance by the specific gravity difference in the cyclone system.

In this case, the relatively light microscopic particles float up to the upper part of the hydrocyclone 7200, are discharged and collected by the foreign matter collecting part 7300, and the heavier silicon dioxide powder SI is dropped downward And is supplied again to the charging port 5150 through the metering pump 7400 so as to be reused.

Here, the metering pump 7400 is a known pump for supplying a fixed amount.

In addition, the discharge tray 7000, the hydrocyclone 7200, and the pumps are installed on the lower side of the air blowing case 5120 in a miniaturized state. Since the discharged minute volume is not large, .

In addition, in the case of the air purge unit 5400, the spray hole 5420 of the nozzle unit 5410 (refer to FIG. 15) is clogged by the reverse flow of the silicon dioxide powder due to the back pressure when the purging is stopped, In order to prevent such a phenomenon, the nozzle unit 5410 may be deformed into a shape as shown in FIG. 18 to perform a diaphragm function.

18, the nozzle portion 5410 is formed in a rectangular tube shape with a closed end, and all the corners are chamfered, and a cylindrical connecting portion 5430 is formed at the lower end portion of the nozzle portion 5410 .

At this time, the connection portion 5430 is a portion where a connecting pipe connected to the air supply source is connected.

A coupling portion 5440 having no injection hole 5420 is formed at a boundary between the nozzle portion 5410 and the connection portion 5430. The coupling portion 5440 is formed so that its peripheral portion is rounded, Is chamfered to a greater extent than the chamfer of.

Particularly, the injection hole 5420 further includes a diffused portion 5422 that is more refined so that the injected air spreads well in all directions so that the rubber tube 5450, which will be described later, swells more easily.

A cylindrical rubber tube 5450 is inserted into the nozzle unit 5410 and a clamp 5460 is fixed to the coupling unit 5440 to firmly fix a lower end portion of the rubber tube 5450.

When the high pressure air is supplied through the connection portion 5430, the rubber tube 5450 swells and opens the spray holes 5420. At this time, the spray holes 5420 are formed in the periphery of the nozzle portion 5410 The rubber tube 5450 is urged only in a direction perpendicular to the circumferential surface of the nozzle unit 5410 and swells up.

When the rubber tube 5450 is swollen and thus the spray hole 5420 is opened, the air discharged through the spray hole 5420 is pushed against the inside of the rubber tube 5450 and discharged forward.

Further, since the lower end of the rubber tube 5450 is fastened by the clamp 5460, the rubber tube 5450 does not move but remains fixed.

If the supply pressure is interrupted, the swollen rubber tube 5450 is instantaneously contracted to seal the spray hole 5420, so that even if backflow of the silicon dioxide powder due to back pressure occurs, the rubber tube 5450 can not move toward the spray hole 5420, ), The clogging of the spray holes 5420 due to the fixing can be completely solved.

200: underground facility 300: GSPS satellite
400: Survey target 500: Laser range finder

Claims (1)

A tag unit attached to the surface of the underground facilities, storing the underground installation information and outputting the information in the RF ID system; An underground surveying equipment for reading the underground installation information of the tag unit, confirming coordinate information from received GPS information, and outputting underground installation information and coordinate information; A survey target in which the other end is exposed to the ground with one end connected to the underground facility; A laser distance measuring instrument mounted on an underground measuring instrument and irradiating a laser beam to a measurement target and analyzing the position information to track the movement path; A tablet for receiving the underground installation information of the underground surveying equipment, operating the downloaded underground surveying application, and displaying the information on the groundwater surveying equipment; A mobile communication network connecting with a tablet through a mobile communication method and allocating a communication path; A management computer which is a server having a plurality of processing modules for accessing a mobile communication network to manage geographic information, provide an underground survey application, store underground installation information, and output information analyzed by a statistical program,
The underground survey equipment generates a frequency control signal to be transmitted to the tag unit and recognizes data received from the tag unit. A transmitter configured to mix a frequency of the frequency variable controlled by the control unit, a mixer that mixes the frequency control signal and the variable frequency with each other, and an amplifier that amplifies the modulated signal of the mixer; A low noise amplifier for low noise amplification of the signal of the tag section, a phase shifter for changing the variable frequency of the transmission section by 90 degrees, an output signal of the phase shifter frequency signal and the low noise amplifier, demodulating it into an I signal, A mixer for mixing the output signal of the amplifier and demodulating it into a Q signal, a low-pass filter for filtering the output I / Q signal of the mixer, an amplifier for amplifying the output signal of the low-pass filter, Pass filter and an analog / digital converter for converting an output signal of the amplifier into a digital signal,
The measurement target is composed of a stator of a magnetic substance material mounted on an underground facility and a rod installed to be rotated by a hinge bound to the upper end of the stator,
The underground surveying equipment may include an underground surveying equipment control unit and an underground surveying equipment control unit for controlling the moving direction of the underground surveying equipment by inputting and analyzing signals of the laser distance measuring unit receiving the laser beam reflected from the surveying target, Further comprising a first motor and a second motor for controlling the backward, leftward, and rightward rotations,
The tablet includes a first wireless unit that wirelessly connects to the underground survey equipment and transmits and receives data including underground installation information; A tablet control unit connected to the first wireless unit, downloading and operating the underground survey application, requesting download of the facility information, and controlling overall operation of the tablet; A second wireless unit receiving the pieces of information on the basis of the control of the tablet control unit; A third wireless unit for transmitting and receiving the data signal to the mobile communication network under the control of the tablet control unit; An information storage unit for storing the facility information based on the control of the tablet control unit; And a touch display unit for outputting facility facility information under the control of the tablet control unit and for inputting information and commands by touching,
The tablet accesses a management computer to download and operate an underground survey application, inputs a management number or coordinate information of an underground facility, downloads and displays corresponding geographic information, accesses an underground facility and reads underground facility information And if the real-time input of the actual site information is set, the site information is inputted by real-time access to the management computer, and if not the real-time input setting state, the on-line information is inputted by accessing the management computer,
The management computer stores the facility information, the underground survey application and the statistical program linked with the coordinate information of the location where the underground facility is buried and the management number for each location, operates the statistical program, operates the underground survey app Facilities for underground facilities Giaez information is downloaded in a streaming format, and information is stored from the tablet when the underground installation information and the field information measured in the field are inputted. By the statistical program operation, underground installation information, actual site information, A surveying system for an underground facility using a laser range finder for outputting classification results of echo information;
The management computer includes a housing 5100. The housing 5100 is formed in a rectangular box shape and a door DR capable of being opened and closed is provided on the front face of the housing 5100. On both sides of the housing 5100, A unit 5110 is provided;
The air blowing unit 5110 includes an air blowing case 5120 and an air outlet OUT is formed on the air blowing case 5120 and an air inlet IN is formed on a lower side of the air blowing case 5120, The introduction guide 5140 is arranged at an interval on the lower side of the partition 5130 so as to prevent the exhaust port OUT from communicating with the lower space by the partition 5130, And an inlet 5150 for introducing the silicon dioxide constituting the air gap filter is formed by the insertion guide 5140. The inlet 5150 is sealed by an inlet door 1260 that can be opened and closed, The end of the feed hopper 5170 is disposed at the upper end of the feed hopper 5170 and the feed hopper 5170 is communicated with one side of the screw feeder 5180 so that the powdered silicon dioxide moves on the feed guide 5140, (5170) to the screw feeder (5180) Type filter 5190 is provided on the lower side of the inlet IN and the particle size of the silicon dioxide powder SI is formed larger than the inter-ring spacing of the ring type filter 5190, The ring type filter 5190 is fitted in the fixing member 5200. The fixing member 5200 is screwed to the inner wall surface of the air blowing case 5120, A filtration air supply hole 5210 is formed at a lower side of the side where the inlet port 5150 is formed and the filtration air supply hole 5210 is communicated with the inside of the housing 5100 through a supply pipe 5220, And a lower plate 5230 is installed below the ring-type filter 5190;
A charging unit 6000 is further provided on the side surface of the air blowing case 5120 to supply a predetermined amount of silicon dioxide powder and the charging unit 6000 is connected to the charging funnel 6100 and the lower end of the charging funnel 6100 A feed motor 6300 installed in a space defined in one side of the inside of the feed cylinder 6200 and a feed screw 6400 connected to the feed motor 6300 and arranged in the feed cylinder 6200, A discharging hole 6500 formed in the bottom surface of the end portion of the conveying cylinder 6200 and a discharging opening 6700 for opening and closing the discharging hole 6500 in a fixed quantity and discharging the discharging hole 6500, A fixing bracket 6900 coupled to an end of the transfer cylinder 6200 to fix the discharge cylinder 6800 and a fixing bracket 6900 disposed at a lower portion of the discharge hole 6500 and connected to the inlet 5150 And a discharge guide 6600;
The filtered fine particles including the silicon dioxide powder separated and removed by the air purge are stored in the discharge tray 7000 and the discharged fractions collected by the discharge tray 7000 are discharged through the discharge finishing pump 7100 to the hydro- And the hydrocyclone 7200 receives the discharge of the foreign material mixture to separate the silicon dioxide powder and the fine foreign substance by the specific gravity difference in the cyclone manner and the upper part of the hydrocyclone 7200 The silicon dioxide powder SI dropped to the lower portion of the hydrocyclone 7200 is supplied to the inlet 5150 through the metering pump 7400 ≪ / RTI >
The air purge unit 5400 for purifying the air includes a rectangular nozzle 5410 in which a plurality of spray holes 5420 are formed and a tip end thereof is closed and a connection portion (not shown) formed in the lower end of the nozzle portion 5410 5430); A binding portion 5440 in which a spray hole 5420 is not formed is further formed at the boundary between the nozzle portion 5410 and the connection portion 5430; A cylindrical rubber tube 5450 is fitted to the nozzle unit 5410; A clamp 5460 for fixing a part of the lower end of the rubber pipe 5450 is installed in the coupling part 5440;
Wherein each corner of the nozzle part (5410) is chamfered, and a diffusion part (5422) having a larger diameter is further formed in the injection hole (5420).

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