EP1320078B1 - Method for recording time, location and use of a sewer cleaning vehicle - Google Patents

Description

The invention relates to a method for detecting the use of a Kanalspülwagens with the features of the introductory part of claim 1.

Often, it is desirable that the time and place of use of a ditch wagon be detected. It also depends on verifiable hold, whether the device has actually been worked and whether the specifications for carrying out the work have been adhered to.

This is particularly important when carrying out operations with sewer cleaning wagons on behalf of others and if it is desirable or required to provide proof of the actual work done.

From the DE 196 19 326 A there is known a method of detecting the use of a channel scavenging carriage in which the location of use of the scavenging trolley (the sewage pipe to be cleaned is identified and therefore the location of the scavenging carriage detected), the time during which the scavenger is used and the pressure of the liquid, with which the channel is flushed, recorded and recorded (documented).

The invention has for its object to provide a method of the type mentioned, with which this is possible.

According to the invention, this is achieved by a method which contains the features of claim 1.

Preferred and advantageous embodiments of the invention are the subject of the dependent claims.

The method according to the invention provides the following: the location of the use of the channel scavenging carriage is detected with the aid of a locating system. The locating system is also preferably used to detect the time spent working with the channel scavenging system. The time can also be recorded with the aid of a computer system used during work.

In order to determine whether the sewer cleaning wagon has actually been worked, a typical size for carrying out work with a sewer cleaning wagon, namely the pressure of liquids, with which channel rinses are carried out, is detected.

The locating system used in the invention, in which the location of the channel scavenging vehicle is detected, may be a positioning system that operates on the basis of satellites, such as Loran, GPS or D-GPS. In particular, if the locating system used in the invention is a satellite-based locating system, this can also be used to detect the time of use of the sewer cleaning vehicle.

With the aid of the method according to the invention, with which not only the place where the sewer cleaning wagon is located and the time during which the sewer cleaning wagon is at the specific location but also whether and how a working tool has actually been used (by Detecting at least the pressure of the rinsing liquid as a typical for the use of the working tools of Kanalspülwagen size) can be reproduced by means of a diagram or a similar expression, the said data after it has been detected and processed in a central computer, which may be mounted on the Kanalspülwagen are. With the method according to the invention is held so verifiable when, where and especially how has been worked.

In the method according to the invention, a system using transponders and transponder readers and / or barcodes (bar / code) in conjunction with barcode sensors can be used as a supplement or as an alternative to determining the location of the use of a canal wagon by GPS. Readers (bar / code reader) can be used.

Further details and features of the invention and advantages thereof will become apparent from the following description of an embodiment of the invention with reference to a Kanalspülwagens with reference to the accompanying drawings. FIG. 2 shows a diagram of the pressure against the time of the pressure of the cleaning liquid on the rinsing carriage and on the nozzle and FIG. 3a to 3e show examples of masks on the screen of a computer (computer) used in carrying out the method according to the invention.

A Kanalspülwagen 1 has for cleaning channels by pressure rinsing a wound on a hose reel 2 cleaning hose 3, which is inserted through a shaft 4 in a channel 5 and carries a cleaning nozzle 6 at its free end. In carrying out a channel purge, the hose 3 is drawn in the direction of arrow 7 in Fig. 1 through the passage 5, while cleaning fluid (e.g., water) discharged from the purge nozzle 6 through a pump not shown with pressure exits.

Usually, the Kanalspülwagen 1 is also equipped with a suction pump 10, by means of which cleaning liquid is sucked in the region of the shaft 4 via a suction hose 11 from the channel 5.

1. 1) Druckmessung an der Schlauchtrommel 2 (Drucksensor 22)
2. 2) Vakuumdruckmessung bei der Vakuumpumpe 10 (Drucksensor 23)
3. 3) GPS Eingang
4. 4) Stromversorgung
5. 5) Ausgang für Handheld 25
6. 6) Ausgang zur Erweiterung für ein Druckreduzierventil, so daß der maximal höchst zulässige Spüldruck nicht überschritten werden kann.

At the Kanalspülwagen 1, a GPS antenna 20 for the tracking system and a computer with position, time and cleaning pressure detection is installed in addition. This computer can be controlled by inputs and their data can be evaluated by means of Windows CE or a PC. Any other type of evaluation is also possible. The computer may be housed in a housing 21 ("black box") along with other equipment required to detect the work. This black box is a waterproof aluminum or stainless steel case. A black box with an aluminum or stainless steel case is preferred for retrofitting existing sewer cleaning wagons. In new vehicles, which are equipped and set up from the outset for carrying out the method according to the invention, can also be provided that the devices contained in the black box (see below) are integrated directly into the vehicle. In this case, a separate, waterproof housing for the black box is unnecessary. In the black box can be arranged:

1. 1) Pressure measurement on the hose reel 2 (pressure sensor 22)
2. 2) Vacuum pressure measurement at the vacuum pump 10 (pressure sensor 23)
3. 3) GPS input
4. 4) power supply
5. 5) Handheld output 25
6. 6) Output for expansion of a pressure reducing valve, so that the maximum maximum flushing pressure can not be exceeded.

The pressure reducing valve may be set to the maximum allowable operating pressure for the cleaning fluid displayed on the screen of the computer of the black box 21 after entering the data of the sewer pipe to be cleaned (see below). This prevents - e.g. old - sewer pipes are damaged by excessive pressure of the cleaning fluid.

• Plannummer
• Wie weit ist der Arbeitsschacht zufahrbar?
• Schachttiefe
• Händische Förderung von sperrigem Räumgut
• Vorkommnisse von jeweiligen Arbeitsschacht
• Schachtbeurteilung Mängel
• Eingetretener Flurschaden
• Reinigungsart, Erhaltungsreinigung, Reinigung für Inspektion oder Sanierung
• Sonderreinigung (Abfräsen, Wurzelschneiden, Entfernen verfestigter Ablagerungen)
• Erstreinigung, anlaßbezogene Reinigung, Störfall, Wartungsreinigung
• nächste empfohlene Reinigung
• Profilform, -größe und -material des Kanalrohres 5: Kreisprofil, Eiprofil, Sonderform
• Räumgut: mineralische Stoffe (Sand, Kies, Splitt), organische Anteile (Fett), Keime, Krankheitserreger, Menge an Räumgut
• Räumgutentsorgung
• Wasserbetankung, Straßenhydrant
• verbrauchte Spülwassermenge
• Schlauchdimension:
  • DN25 320l/min Druckabfall: 0,3-0,4 bar/lfm
  • DN32 400l/min Druckabfall: 0,15-0,2 bar/lfm
  • DN40 640l/min Druckabfall: 0,15-0,18 bar/lfm
• Rohrmaterialien: Beton, Steinzeug, duktiler Guß, Faserzement, Kunststoff wie Polyvinylchlorid, Polyethylen, glasfaserverstärkter Kunststoff, GFUP-Polypropylen, Polypropylen, Sondermaterialien
• Reinigungsdüse: Strahlwinkel zur Rohrwand - Abstand der Düsenöffnung zur Rohrwand
• Größe der Düsenbohrung (Strahldurchmesser)
• Düsenarten: Flachdüse, Spatendüse, Keildüse, Schlittendüse, Rotationsdüse, Rotationsdüse mit Fräskopf, Propellerdüse, Kettenschleuderdüse, Kettenschleuderdüse mit einer Kettenschlaufe, Ejektordüse oder Kontrolldüse.

It is also possible to enter and enter individual, several or all of the following master and default data:

• plan number
• How far can the working shaft be approached?
• shaft depth
• Handicraft of bulky goods
• Occurrences of each working shaft
• Manhole assessment defects
• Entered corridor damage
• Cleaning, maintenance cleaning, cleaning for inspection or renovation
• Special cleaning (milling, root cutting, removal of solidified deposits)
• Initial cleaning, special cleaning, accident, maintenance cleaning
• next recommended cleaning
• Profile shape, size and material of sewer pipe 5: circular profile, egg profile, special shape
• Brooding material: mineral substances (sand, gravel, grit), organic components (fat), germs, pathogens, amount of material to be cleared
• Räumgutentsorgung
• Water refueling, street hydrant
• used amount of flushing water
• Hose dimension:
  • DN25 320l / min pressure drop: 0,3-0,4 bar / lm
  • DN32 400l / min pressure drop: 0,15-0,2 bar / lm
  • DN40 640l / min pressure drop: 0,15-0,18 bar / lm
• Pipe materials: Concrete, stoneware, ductile cast iron, fiber cement, plastic such as polyvinyl chloride, polyethylene, glass fiber reinforced plastic, GFPP polypropylene, polypropylene, special materials
• Cleaning nozzle: jet angle to the pipe wall - distance of the nozzle opening to the pipe wall
• Size of the nozzle bore (beam diameter)
• Nozzle types: Flat nozzle, Spade nozzle, Wedge nozzle, Sliding nozzle, Rotary nozzle, Rotary nozzle with milling head, Propeller nozzle, Chain spinneret, Chain spinneret with a chain loop, Ejector nozzle or control nozzle.

The pressure with which the cleaning hose 3 is acted upon and with which the cleaning liquid from the cleaning nozzle 6, which has been introduced into the channel structure 5, is applied, is detected by a pressure transducer 22 at the entrance to the hose reel 2, preferably after the last valve.

The pressure with which liquid emerges from the cleaning nozzle 6 and which is essential for working with the cleaning cart 1 (too low a pressure leads to an insufficient cleaning, too high a pressure leads to a damage to the canal building 5) is determined by "calibration " detected. For calibrating a pressure transducer is attached to the cleaning nozzle 6 and detected the pressure drop across the tube 3 and entered as a fixed calibration factor in the calculator in the black box 21. The respective nozzle used is also calibrated.

Calibration can be done as follows:

The principle is that each type of nozzle must be calibrated in combination with the hose 3 used in each case (length and diameter thereof). The calibration is preferably stored in the menu program.

Before starting work, enter the data of the sewer pipe 5 to be cleaned: pipe diameter, pipe shape (circular profile, egg profile or special shapes), pipe material. This is important because the manufacturer has the maximum permissible flushing pressures and specifications for the nozzle to be used as well as jet angles and nozzle bores and water quantity for each pipe material.

With the method according to the invention, a protocol can be created on the example of a cleaning of a sewer structure, in which the essential data are given, and in which is shown in the form of diagrams, the pressure profile when working with the Kanalspülwagen. Thus, the time and place and the actual execution of the work and the progress of the cleaning of the channel 5 can be accurately logged and detected. The "cleaning speed" is determined from the duration (time) of the cleaning and the length of the smallest distance. The length of the cleaned route can be determined, for example, by providing a displacement sensor acting on the cleaning hose 3 in the area of the hose reel 2, which detects, for example via a roller resting against the hose 3, the length wound on the cleaning hose 3 and the values thus determined give the computer.

An example of such a protocol is given below. FIG. 2 shows the pressure curve in the course of the channel flushing carried out according to the protocol. Channel cleaning control Measurement from 30.10.2001 Measuring number: 03 place : 9300 St.Veit / Glan Street : Handelsstr. 13 builder : customer : Hemar Ing. Office : technician : Tafemer Plan no. : 13 channel channel type : Dirty water canal material : GFUP profile form : Circular profile Max. Permissible flushing pressure : 100 bar diameter : 200 mm Length of posture : 30 m from Schacht : S 481 to shaft : S 482 working shaft Zufahrbar : directly shaft depth : 4 m evaluation : .no damages events : none cleaning of cleaning : Maintenance cleaning pollution degree : 10% Type of the Räumgut gravel Räumgut amount : 0.2 m ³ manual promotion : no disposal : Sewage plant St. Veit refueling : from hydrant next rec. cleaning : 2 years amount of water 1.5 m ³ next ges. cleaning : 5 years jet description : Rotary nozzle 1 kind atomiser hose length : 150 m dimension : DN40 beam angle : 35 degrees Distance to pipe wall : 70 mm nozzle bore :1 mm flush starting work : 09: 42: 32 end of work : 10: 29: 23 Flushing start : 09: 55: 14 GPS : 4639.6268 N 01259.5593 E Rinse end : 10:24:44 GPS : 4639.6268 N 01259.5593 E working time : 00: 46: 51 Flushing time : 00:29:30 Max pressure nozzle : 120.297 bar Max. Pressure pump : 221.541 bar Reinigungsgeschw. : 0.0172 m / sec Max. Pressure exceeded : YES Reiniguhgsvorgänge :1 TV investigation : no Flurschaden : none comment : Signature Technician:

The course of the pressure of the cleaning liquid at the rinsing vehicle 1, which is determined by the pressure sensor 22 mounted on the rinsing carriage 1, on the one hand, and the pressure with which the cleaning liquid exits from the cleaning nozzle 6 in the channel structure 5, on the other hand, results in that shown in FIG Diagram. This shows in the upper curves (higher pressures), the pressure at the rinsing vehicle 1 and in the lower curves (lower pressures), the pressure of the cleaning liquid at the nozzle 6.

In detail, the method according to the invention can be carried out with the aid of the device described, for example as follows, in detail. In the example described below as a computer a portable computer with Microsoft Windows CE is connected to the computer.

testing procedure

• Bei einem bestehenden Auftrag werden die Stammdaten, die schon bei vorherigen Messungen eingegeben wurden, in der Eingabemaske vorgegeben. Der Benutzer paßt nur die Daten entsprechend an.
• Wurde ein neues Projekt begonnen, so muß der Benutzer die Stammdaten erst eingeben. Diese Stammdaten werden dann in das neue Projekt übernommen.

The user activates the PC of the black box 21. The display shows a link to "Hemar KRK" in the main menu (Fig. 3a). Touch the symbol twice quickly with the stylus. Then once-click on the "New Measurement" button to start a new measurement. The screen Project Selection appears (Fig. 3b). Before entering master data, the user decides whether to continue an existing job (project) or to start a new job:

• For an existing order, the master data entered in previous measurements is specified in the input mask. The user only adjusts the data accordingly.
• If a new project has been started, the user must first enter the master data. This master data is then transferred to the new project.

At the beginning of the master data entry (FIG. 3 c), the GPS time is automatically read out via the black box 21. This time is the beginning of working time. In the menu Project selection (Fig. 3b) it is possible to select an already created project or to create a new project.

If the "Next >>" button is touched with the stylus, the project master data is automatically transferred to the input mask of the master data.

The process can be stopped at any time by tapping the "Cancel" button and returned to the main menu.

To scroll down the input mask (Figure 3d), the scroll bar on the right edge of the screen is used by tapping the arrows to scroll. The scrollbar can also be dragged (tap with the stylus and pull without pulling) to move the mask.

When the mask is moved all the way up, two buttons appear at the bottom. Tapping on "Next >>" will continue the process and start the measurement.

After entering the master data, the user starts the checking process (by means of a button in the master data mask). The PC reads the current GPS time from the computer at this time. This time is the beginning of the cleaning time.

On the PC display now the current measurement data - as they are transmitted from the computer - presented. Furthermore, the trace of the computer data is displayed here in real time. The curves and data calculated using the calibration data stored in the PC can also be displayed during the test procedure.

During the measurement, the current measured data is displayed on the screen (Fig. 3f), the measurement being started by tapping the "Start" button. If the measurement is running, the "Start" button jumps to "End". In this case, the measurement data are displayed as a curve on the screen (Fig. 3f), similar to the diagrams shown in Fig. 3. Tapping the "End" button completes the measuring process. The button then jumps to "Next >>", this is now tapped to enter the remaining master data.

When the cleaning process is complete, the user completes the checking process on the PC by means of a button in the user interface.

The PC reads again the current GPS time from the computer. This time is the end of the cleaning time. The verification process is completed and an input mask is displayed for the remaining master data.

The user can now enter the remaining master data (Fig. 3e). If he has finished this process, the PC automatically reads out the current GPS time via the computer. This time is the end of working time.

Transfer to PC

To transfer the data to the PC, the PC is connected to the computer. In the example the software `ActiveSync 'from Microsoft is installed on the computer. ActiveSync makes the data available on the PC as a drive on the computer.

The software can then load the data from this drive and decompress it for further processing. The master data can be edited again on the computer.

The final measurement is stored on the computer and left by the PC to take over the master data for further measurements belonging to this project.

The individual measurements on the PC are assigned to the various projects there. If a file with the corresponding project already exists on the computer, then the measurements for this project are saved. Otherwise, the project data is read in by the PC and a new project file is created in which the measurements are taken over.

Once a project has been completed, the project data can be deleted separately from the PC using the computer software. It is also possible to transfer projects stored on the PC back to the PC to continue the work.

calibration

During calibration, the calculated pressure at the nozzle and the friction loss of the hose are stored. The friction loss of the hose is specified by the manufacturer or in a separate Measurement determined.

Calibration is performed by merging two separate measurements. These measurements are first carried out in the usual form at different pressure levels. Then the pressure data at the rinse nozzle are measured. From these two measurements, the data are extracted in the form of a calibration table, which makes it possible to calculate the pressure data at the rinsing nozzle from the measured values.

Several of these tables for different hose lengths are stored in the calibration file. This calibration file is compressed and stored in encrypted form on the PC so that the corresponding calculated data can be displayed during the test procedure.

An example of calibration tables is shown below:

Hemar KRK calibration

Jet: atomiser Diameter: 69 mm Nozzle bore: 2.5 mm Number of nozzles: 12 tube Friction loss: 0.05 bar / m Length: 150 m Pressure loss: 7.5 bar Pressure on pump Pressure on nozzle Pressure loss measured calculation. Pressure a. jet 27,50 17,60 9.90 25.10 49,50 37,10 12.40 44,60 73,00 58,10 14.90 65.60 106.50 87.60 18,90 95.10 120.50 98,10 22.40 105.60 153.50 122.60 30,90 130.10 175.00 139.60 35.40 147.10 194,50 155.10 39.40 162.60 calculated pressure a. Nozzle = pressure on nozzle + pressure loss hose

The calibration data will be provided with a date entered by the calibration officer. The calibration must be repeated every two years. To ensure that this appointment can be carried out in good time, the software in the H / PC alerts the user three months before reaching this date each time the software is restarted. If the calibration date is exceeded, measurement is no longer possible.

report

The test report essentially consists of three parts and is printed by the computer software. The first part contains the master data as well as an overview of the essential measurement data. The second part is a numerical representation of the measuring process (see the table on page 4). The third part is the graphical representation of the measuring process (Fig. 2).

The measurement graph contains three curves. The actual trace that consists of the measured pressure data (as supplied by the computer). Another curve represents the pressure curve at the rinsing nozzle. This curve is calculated from the measured data and the calibration data. The third curve represents the pressure curve of the vacuum pump (this data is also supplied by the computer).

The numerical representation contains the same data as the measurement graph as a series of pressure values.

The master data essentially consists of the data entered by the user on the PC. There are still more, essentially processed data from the measurement process. Any data that can be automatically detected (such as date, times, etc.) is not user-inputable.

project report

The project report is a collective list of all measurements of a project. In addition to the master data of the project, the number and length of the individual postures as well as the total working time are listed.

In addition, the user can enter additional data that will also be saved in the project file.

Computer software

In addition to reading the measurements from the handheld computer 25, the computer software also serves to manage the projects and enables test reports to be printed.

dates

The individual measurements are stored compressed on the PC in order to make better use of the storage space. When importing to the computer, the data is decompressed and stored in the final variant.

The individual measurements are saved on the PC in separate files. In addition, there is a project file that contains the master data of the project. This project file is stored in a compressed version on the PC to allow the transfer of the data into new measurements.

The compressed files contain the same data as the final files, packed with an efficient compression algorithm.

On the computer, the data of a project (the project master data as well as the individual measurements) are stored in a single file. This makes it impossible for individual measurements to be "lost".

project data

In addition to the pressure curve and the GPS data, which are supplied by the computer and stored in the measurement, there are still the master data that are entered by the user partly on the PC and partly on the computer.

Among other things, the following master data can be stored, for example:

Client, Street, Location, Client, Ing.Office, Type of sewer, Material, Diameter, Performance length, Manhole start, Manhole measuring, Technician, Number of cleaning operations, Exhaust, amount of flushing liquid in m ³ , Degree of pollution, Working pressure of dishwashing machine, Liter / min, Working pressure Nozzle, type of nozzle, TV examination, notes.

In addition to these data, more are automatically determined from the measurement process such as. the GPS coordinates at start of scale and end of measurement, date, times etc.

The project also stores data needed for the mass deployment of the project.

terms

PC "Handheld Computer" with Microsoft Windows CE Blackbox System for measuring data acquisition ActiveSync Microsoft software for managing the PC and the data stored there.

• Das Verfahren kann mit (einfach) nachgerüsteten Kanalspulwagen ausgeführt werden.
• Neuerhalt, am Diagramm zur Kontrolle des höchst zulässigen Spuldruckes bei Anwendung am Kanalspulwagen.
• Es werden bei Anwendung am Kanalspulwagen der Druck am Fahrzeug, der Druck an der Düse und gegebenenfalls der Druck am Ausgang der Saugpumpe erfaßt.
• GPS Zeiterfassung und Koordination für die Fahrzeugpositionierung (Nachweis der geleisteten Arbeit und korrekte Verrechnung)
• Arbeitsprotokoll, z.B. Spülprotokoll

Advantages of the process of the invention include, but are not limited to:

• The process can be carried out with (simply) retrofitted Kanalspulwagen.
• New arrest, on the diagram for the control of the maximum permissible spool pressure when used on the channel winder.
• When applied to the Kanalspulwagen the pressure on the vehicle, the pressure at the nozzle and possibly the pressure at the output of the suction pump are detected.
• GPS time recording and coordination for vehicle positioning (proof of work done and correct accounting)
• Work protocol, eg rinse protocol

When a system of transponders and readers for transponders is used in the inventive method for determining the location of the use of a Kanalspülwagens, for example, it can be worked so that in a slot to be cleaned, a transponder is installed, not only the shaft regarding Identified his local arrangement, but also master data of the shaft, eg its design, the number and other characteristic of the shaft and for the processing (cleaning, rinsing the same) essential data to the reader (transponder reader) transmits, so that these in the data processing system the Kanalspülwagens be entered and processed there and no separate inputs regarding the site, in the example of the channel, more necessary.

Instead of working on the basis of radio transponder bar codes (bar codes) can be provided for detecting the location and time of use of a Kanalspülwagens at the site, which can be detected by a bar code reader, and the data thus acquired, the in addition to the purely local information also data on the manner of the place of use, eg data of the channel, which is to be rinsed include, can be fed into the EDP of the canal wagon.

In the invention, the hand-held computer 25 may be preprogrammed with the maximum allowable flush pressures known by tube manufacturers. Too high pressures can be prevented. Because by entering the master data in the handheld 25, such as pipe material, diameter, etc., the maximum maximum flushing pressure automatically appears in the display. This pressure should not be exceeded.

Furthermore, a mechanical measuring wheel for measuring the hose lengths can be mounted on the hose reel on the rinsing cart. This mechanical measuring wheel has an electronic connection to the measuring instrument and directly indicates the hose length on the handheld 25 (see protocol). It also measures where and at what pressure in the pipe is flushed.

Claims (11)

1. Method for detecting the use of a sewer cleaning vehicle (1) wherein the location of use of the sewer cleaning vehicle (1), the time during which the sewer cleaning vehicle (1) is used, and the pressure of the fluid with which the sewer (5) is cleaned are detected and recorded as a typical magnitude for execution of the work with the sewer cleaning vehicle (1), characterised in that the pressure at which the fluid discharges from the cleaning nozzle (6) is detected by detecting the pressure at which the fluid acts on the cleaning hose (3) at the inlet into the hose drum (2) by means of a pressure sensor (22), and from the thus detected pressure calculating the pressure, at which the cleaning fluid discharges from the cleaning nozzle (6), with a calibration factor, which is determined by means of previous measurements and corresponds to the pressure drop over the cleaning hose (3) and the cleaning nozzle (6).
2. Method according to Claim 1, characterised in that the location of use of the sewer cleaning vehicle (1) is detected by means of a satellite-based locating system.
3. Method according to Claim 1 or 2, characterised in that the time period of the use of the sewer cleaning vehicle (1) is detected by means of a satellite-based locating system.
4. Method according to one of Claims 1 to 3, characterised in that the pressure is determined in the form of a graph, in which the pressure is plotted in relation to time.
5. Method according to one of Claims 1 to 3, characterised in that the pressure is determined in the form of a report, in which the pressure is included together with other work-related data.
6. Method according to one of Claims 1 to 5, characterised in that the location of use of the sewer cleaning vehicle (1) is detected by means of a transponder installed at the location of use and a corresponding receiving device on the sewer cleaning vehicle (1).
7. Method according to Claim 6, characterised in that in addition to details concerning the location of use, data of the excavation site where the work is being conducted and similar are also emitted by the transponder.
8. Method according to Claim 6 or 7, characterised in that data of a shaft (4), in particular its principal data such as construction type, number of the shaft and the like, are emitted by the transponder.
9. Method according to one of Claims 6 to 8, characterised in that transponders are arranged in a shaft (4) to be cleaned.
10. Method according to one of Claims 6 to 9, characterised in that data emitted via radio by the transponder and detected by the receiving device are input into the data processing system of the sewer cleaning vehicle (1).
11. Method according to one of Claims 1 to 10, characterised in that a barcode reader, with which barcodes attached to prominent locations of excavation sites to be processed and the like can be read, is arranged on the sewer cleaning vehicle (1).

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