EP3880892A1

EP3880892A1 - Drainage system and drain

Info

Publication number: EP3880892A1
Application number: EP19798640.9A
Authority: EP
Inventors: Heino Messerschmidt; Brunhild Schmidtke
Original assignee: ACO Severin Ahlmann GmbH and Co KG
Current assignee: ACO Ahlmann SE and Co KG
Priority date: 2018-11-13
Filing date: 2019-11-06
Publication date: 2021-09-22
Also published as: EA202191291A1; US20210388581A1; DE102018128443A1; WO2020099216A1; IL283129A; CN113015829A; US11851855B2

Abstract

Drainage systems are limited in their performance and difficult to maintain. A drainage system is therefore specified that comprises the following: at least one infiltration device (10, 40) which is designed to receive fluid; a collecting device (30) which is fluidically connected to the at least one infiltration device (10, 40) and designed to receive fluid of the at least one infiltration device (10, 40) and discharge it to a fluid system (4), there being provided a gateway device (52) which is designed to receive sensor data and to transmit the latter to a receiving unit (60), at least one sensor (6, 6', 7, 11, 11', 14, 31, 31', 32, 33, 41, 44, 42, 45) for outputting sensor data that is communicatively connected to the gateway device (52).

Description

Drainage system and trench

description

The invention relates to a drainage system and a drainage system.

Sealing surfaces significantly affects the groundwater balance. In addition, the draining surface or

Rainwater is discharged and sewage treatment plants are supplied. Heavy rain events pose a particular challenge, which can lead to flooding with major damage in urban areas. In such extreme situations, it must be ensured that surface or rainwater can be safely drained off.

It is known to use infiltration devices that allow the surface or rain water to seep into the ground. Infiltration systems, such as trenches, are built into the ground and can be large

Absorb volumes of surface water that can then drain into the soil.

From EP 1 764 446 Al it is known to pass rainwater through an underground storage channel to be laid underground. In addition, below the

Storage rigs can be provided with a liquid-permeable distributor device, the area of which is greater than a base area of the storage rigs. This is to ensure that that of the storage rigs

absorbed water is distributed over a large area. This increases the performance of the storage ridges.

However, the solution described above has the disadvantage that for

Introducing the distribution facility a large area needs to be worked on. In addition, the performance of the distribution device is limited, so that flooding occurs in very heavy rainfall can. In addition, the distributor device can be damaged during installation, damage cannot be easily identified and maintenance is complex.

It is therefore an object of the invention to prevent flooding

Prevent heavy rain events effectively. In particular, it is an object of the invention to increase the effectiveness of infiltration devices. It is a further particular object of the invention to maintain

To simplify and improve drainage systems. In particular, it should be possible to identify problems in the drainage system at an early stage.

This object is achieved by a drainage system according to claim 1 and a trench according to claim 15.

In particular, the task is solved by a drainage system, comprising the following:

- At least one infiltration device which is designed to absorb fluid;

- One in fluid communication with the at least one

Percolation device, which is designed to receive fluid from the at least one percolation device and to deliver it to a fluid system,

A gateway device is provided which is designed to

Receive sensor data and send it to a receiving unit, in particular a server device.

Furthermore, there is at least one sensor communicatively connected to the gateway device, in particular an environmental sensor, for delivering sensor data

intended.

A core of the invention is that a multi-stage drainage system

is specified, in which fluid can be forwarded to a collecting device when an infiltration device is fully utilized. Another core of the invention is that sensor data is acquired in such a multi-stage drainage system and are sent to a receiving device or a server device. This means that the properties of the drainage system can be monitored at any time.

A sensor, e.g. B. an environmental sensor, for example as a temperature sensor, a sediment sensor, a flow sensor, a water level sensor

Salinity sensor, a rain quantity sensor and / or as a moisture sensor. Environmental sensors in the sense of the invention can also be further sensors, e.g. B. sensors for determining position, position, voltage or sensors for data coupling, etc. It is conceivable to use different types of sensors.

It is therefore possible to record a large number of different sensor data in order to ensure extensive monitoring of the drainage system.

In particular, a rain hotspot can be recognized with the recorded sensor data; H. an area where there is a lot of rain. It is also possible to see at which points in the system a particularly large amount of water collects. This makes it possible to take targeted measures to improve the system status.

In one embodiment, the at least one sensor can be designed to determine and / or output the sensor data at a substantially constant frequency.

A substantially constant frequency denotes within this

Registration a frequency that is constant minus a measurement inaccuracy. A measurement inaccuracy can comprise less than 10 percent, preferably less than 5 percent and particularly preferably less than 1 percent of the underlying time interval.

The at least one sensor can thus be designed to determine sensor data at uniform time intervals. For example, the time interval can be less than or equal to one day, less than or equal to half a day, less than or equal to one hour, less than or equal to 30 minutes, less than or equal to one minute, less than or equal to 30 seconds or less than or equal to 1 second. This makes it possible to operate the at least one sensor in a particularly energy-efficient manner. The choice of frequency can be sensor-specific, since different environmental influences change more slowly and other environmental influences change faster. Ie the frequency with which the sensor data can be determined and / or emitted by the at least one sensor can be determined taking into account environmental influences.

In one embodiment, the at least one sensor can be designed to switch between a rest phase and an active phase, the determination and / or release being able to be carried out only in the active phase.

By switching between a rest phase and an active phase, further energy can be saved and the time between battery changes can be reduced. It is also possible for sensor data to be delivered only every second active phase or every third active phase. For intermediate storage, the at least one sensor can have a storage device. Energy can thus be saved further since the sensor data is output

is energy intensive. In one embodiment, the at least one sensor can be communicatively connected to the gateway device via a wireless connection. For example, the gateway device and the at least one sensor can be communicatively connected to one another via a narrowband IoT, a Bluetooth low energy connection or a long range wide area network connection. In one embodiment, the at least one sensor can be connected to the gateway device via a wired connection. For example, an Ethernet connection can be provided.

The at least one sensor and the gateway device can be arranged in a star-shaped network topology. In one embodiment, the gateway device can be a SIM card and / or a SIM module

Include communication with the server device.

The at least one sensor or environmental sensor can have a communication device for emitting the sensor data, which can be designed for wireless and / or wired transmission of the sensor data.

In one embodiment, the at least one sensor can be arranged in the at least one infiltration device and / or in the collecting device be, in particular at least partially in a maintenance shaft of the at least one infiltration device and / or the collection device.

With the described embodiment, it becomes possible to monitor the interior of the infiltration device and / or the collecting device. In this way it can be determined, for example, whether water no longer runs off or whether water can no longer enter.

In one embodiment, the at least one infiltration device can have a first temperature sensor and the collecting device can have a second one

Have temperature sensor, the infiltration device and

Collecting device with respect to a floor level on different

Depth levels can be arranged.

With the described embodiment, the soil temperature can be measured at different depth levels. It is also possible to measure the temperature of water at different depth levels. This is particularly advantageous in winter, since it is possible to determine how deep ground frost extends.

In one embodiment, the at least one sensor can be considered a

Sediment sensor, in particular as an ultrasonic sensor, for the detection of deposits in the at least one infiltration device.

The provision of a sediment sensor for the detection of deposits in the at least one infiltration device can be used to determine when the infiltration device can no longer perform its function. This allows a technician to be informed in a simple manner that the infiltration device should be rinsed. The maintenance of the

Infiltration device is simplified.

In one embodiment, the sediment sensor can be arranged in an access shaft of the at least one infiltration device.

Providing the sediment sensor in an access shaft ensures that the sediment sensor is particularly easy to maintain. Installation is also simplified. Furthermore, the arrangement is in one Access shaft advantageous, because from there the entire

Infiltration device can be monitored. For example, a

Ultrasonic sensor to detect the entire interior of the infiltration device.

In one embodiment, the drainage system can comprise at least one backflow valve in the collection device and / or in a fluid system, in particular a waste water system, for blocking backflow fluid, in particular waste water.

In the case of very heavy rainfall, it can happen that a

Overloading the fluid system creates a back pressure, so that fluid or waste water can penetrate into the infiltration device or the collecting device.

This is effectively prevented by a backflow valve in the collection device or in a fluid system.

In one embodiment, the drainage system can comprise at least one drainage device for draining surface and / or rainwater, which is in fluid communication with the at least one

Infiltration device can stand.

A drainage device can be provided in particular on the surface of the earth. For example, the at least one

Drainage device can be designed as a water-permeable base plate or as a drainage element, wherein the base plate and / or the drainage element can be designed to receive at least one sensor, in particular an environmental sensor, on its surface facing away from the earth.

The drainage element can be designed in such a way that line and / or point drainage is provided. For this purpose, punctiform and / or linear passages through the drainage element can be provided. Rainwater can pass through these passages and thus provide drainage. In one embodiment, the punctiform or line-shaped passages can pass through the

Drainage element run. A water-permeable base plate or the drainage element has the advantage that rainwater can be effectively guided to the infiltration device. No standing rainwater remains on the earth's surface. It is particularly advantageous if a sensor, for. B. an environmental sensor can be attached to the base plate or to the drainage element, so that further information, for example with regard to precipitation, can be detected by sensor data and transmitted to the gateway device.

In one embodiment, the base plate and / or the

Drainage element include a sensor receptacle, in particular a through hole for receiving a sensor and / or an environmental sensor.

The provision of a through hole in the base plate is a particularly simple and constructively quick sensor mount. This reduces the manufacturing costs.

In one embodiment, the drainage system can comprise a server device which can be communicatively connected to the gateway device and can be designed to receive the sensor data.

A server device can also be understood to mean a multiplicity of different servers which can be arranged, for example, in a data center. The communication between the gateway device and the server device can be carried out via a wireless connection, for example a long range wide area network. However, it is also conceivable that a

wired communication is used. For this, the

Gateway device and the server device corresponding

Have communication facilities. As wireless

Different air interfaces such as LTE, UMTS or GSM can also be considered for transmission interfaces.

In one embodiment, the server device can have a computing device which can be designed to implement a simulation model

Parameterize use of the sensor data and / or learn a simulation model. It is particularly advantageous if the server device parameterizes or learns a simulation model so that the behavior of one and / or a large number or all components of the drainage system, in particular the at least one infiltration device and / or the collecting device, can be determined or predicted. A quantity of water per unit of time can serve as an input parameter for the simulation model. The in the

The amount of water infiltrated can represent the output of the simulation model. However, it is also conceivable to determine further parameters of the infiltration device or the collecting device as input or as output of the simulation model.

In one embodiment, the simulation model can determine a water level in the at least one infiltration device and / or in the collection device as a function of an amount of introduced fluid, in particular of

Specify wastewater.

The task is also solved in particular by a trench

Use in a drainage system according to any one of the preceding claims, comprising

- a lower drainage element;

- an upper drainage element;

- Spacer elements, via which the lower and the upper drainage element can be connected to each other; wherein at least one sensor arranged on the lower and / or on the upper drainage element is provided for delivering sensor data, in particular an environmental sensor.

The modular trench described above has the advantage that a sensor can be integrated directly into it. Manufacturing is facilitated by the modular structure, as the sensor is therefore easy to attach to the trench

can be attached. In addition, there is a stable construction, which is particularly suitable for use in the drainage system as described above. Further embodiments result from the subclaims.

The invention is explained in more detail below on the basis of exemplary embodiments. Show:

Figure 1: a drainage system in a schematic representation;

Figure 2 is a perspective view of a variety of

Drainage elements;

Figure 3 is a sectional view of a drainage element.

The following are the same for the same or equivalent parts

Reference numbers used.

FIG. 1 shows a schematic representation of a drainage system 1. In the event of precipitation, rainwater is taken up by a rain gutter 21 and passed on to a drain body 10 via a rainwater collecting pipe 20. A flow sensor 6 is arranged in the rainwater collecting pipe 20 and is designed to determine the amount of water flowing through.

The flow sensor 6 is connected to a wireless connection

Gateway device 51 connected, which is arranged on an antenna mast 50. For the transmission of sensor data of the flow sensor 6 to the

Gateway device 51 is used in the exemplary embodiment shown Bluetooth low energy. The flow sensor 6 is designed to be in a

Switch active state when rainwater flows through the rainwater collection pipe 20. If no rainwater flows through the rainwater collecting pipe 20, the flow sensor 6 switches to a passive state in which no sensor data are determined and emitted. The flow sensor 6 is therefore one of them

trained to indicate a volume flow, i.e. the volume of water per period of time which flows through the cross section of the rainwater collecting pipe 20.

The top of the drain body 10 is approximately 80 cm below one

Floor level 2 arranged. The drain body 10 comprises temperature sensors 11, 1, a salinity sensor 12 and a sediment sensor 14 Temperature sensors 11, 1 are arranged at different heights of the drain body 10 on the inside of a side wall. Thus a

Temperature difference between the two temperature sensors 11, 1 can be determined. The salt content sensor 12 is designed to measure the salt content of the

To determine water, which is absorbed by the drain body 10.

The drain body 10 can be reached via a drain maintenance access 13 from above the ground level 2. If 10 dirt particles are deposited in the drain body, i.e. sediments form, then the trench body 10 can be flushed through the trench maintenance access 13. To determine whether in the

Trench body 10 deposits are present in the

Trench maintenance access 13 a sediment sensor 14 is provided. In the exemplary embodiment shown, the sediment sensor 14 is designed as an ultrasonic sensor 14. The ultrasonic sensor 14 can e.g. B. measure whether a protective element surrounding the drain body 10, which protects against penetrating soil, is added or is still permeable to water.

All sensors 11, 1, 12 and 14 of the drain body 10 are for this purpose

trained to deliver sensor data to the gateway device 51.

If the drain body 10 is filled with water, then overflowing water runs through the connecting line 5 into a collecting device 30. A further flow sensor 6 'is arranged in the connecting line 5, which

Sensor data regarding the amount of water flowing through to the

Gateway device 51 sends.

In the collecting device 30 is not only overflowing water

Drain body 10 but also a drain body 40 collected. The

Rigid body 40 is arranged with its top about 40 cm below the floor level 2. A base plate 9, which is designed to be water-permeable, is provided above the drain body 40. Rain water penetrating from above through the base plate 9 is absorbed by the drain body 40. The drain body 40 also comprises a temperature sensor 41 and one

Salinity sensor 42. Furthermore, the drain body 40 has a

Sediment sensor 44, which is arranged in a trench maintenance access 43.

In addition, the drain body 40 has a water level sensor 45 which determines a current water level in the drain body and transmits it as sensor data to the gateway device 51.

The provision of a salt content sensor 42 in the drain body 40 is advantageous since in winter sidewalks are often kept free of snow with salt and the waste water therefore has an increased salt content. In order to avoid overloading the groundwater with salt, the salinity of the water that is discharged into the soil must be measured regularly.

Overflowing water of the drain body 40 is passed via a connecting line 5 "to the collecting device 30. In the connecting pipe 5" a further flow sensor 6 "is provided which determines a flow rate of water through the connecting pipe 5" and as sensor data to the

Gateway device 51 sends.

The collecting device 30 comprises a first temperature sensor 31 and a second temperature sensor 3G, which are arranged at different heights on the side wall of the collecting device 30. In addition, is a

Salinity sensor 32 is provided, which is provided for determining the salinity of the waste water collected in the collecting device 30. In addition, a water level sensor 33 is provided, which is designed to determine the water level in the collecting device 30.

Overflowing waste water from the collecting device 30 is discharged via a

Connection pipe 5 'forwarded to a sewage pipe 4 and thus

for example fed to a public sewage system.

To prevent a backwater in the

If the sewage system or in the sewage line 4 leads to the penetration of faeces and other sewage into the groundwater, a backflow valve 34 is provided in the collecting device 30 at the opening of the connecting pipe 5 ', which is designed to prevent backwater in the connecting pipe 5'. close, so that no waste water from the waste water line 4 in the

Collecting device 30 can penetrate. In order to increase the security against backflow of wastewater, a further backflow valve 8 is also provided at the end of the wastewater pipe 5 ', which creates the connection to the wastewater line 4. The collecting device 30 further comprises a soil moistening unit 35, via which waste water can be released to larger plants, such as a tree 3. In the exemplary embodiment shown, a moisture sensor 7 is also provided in the vicinity of the tree 3, the one

Soil moisture determined and transmitted as sensor data to the gateway device 51. In one embodiment, it may be possible to

Soil dampening unit 35 to block when the soil around the tree 3 is already very moist. For this purpose, a check valve can be provided, which can be controlled via an actuator.

On the antenna mast 50 is in addition to the gateway device 51 and one

Antenna 52 is provided with a water quantity sensor 53, which is designed to determine a precipitation quantity. The gateway device 51 is communicatively connected to the antenna 52 in order to transmit the sensor data to the

To transmit server device 60.

The server device 60 comprises a communication device for receiving the sensor data. In addition, the server device 60 has a computing device with which the sensor data can be analyzed and processed. It is provided in the exemplary embodiment shown that the sensor data are used to parameterize or train / learn simulation models. A simulation model can be provided, for example, for each of the elements, such as the drain bodies 10, 40 and the collecting device 30.

In one exemplary embodiment, a simulation model can be designed as a simple function, such as a polynomial, for example

Using the simulation data, the parameters of the function, e.g. B. the degree of the polynomial and / or the coefficients of the polynomial can be determined. In a further exemplary embodiment, a simulation model can be an artificial neural network or another classifier.

It is also possible to provide precise information about the functionality of the

Get drainage system 1. For example, it can be determined using the water level sensors 33, 45 whether individual elements of the drainage system are overloaded. You can also determine how much water can still be absorbed. The sensor data of the Sediment sensors 14, 44 are taken into account, since the presence of deposits in the collecting device 30 or the drainage bodies 10, 40 reduces the amount of water to be taken up.

The simulation data and / or the results of the simulation models can be transmitted to a mobile terminal 61 via a communication device. For this purpose, a web server can be executed on the server 60, via which the mobile terminal 61 accesses the sensor data or the data of the

Can access the simulation model. The mobile terminal 61 can be a smartphone or a PC, laptop or tablet. It is also provided that an application is run on the mobile terminal 61, which accesses the data stored on the server 60 via an API.

It is thus possible for a service technician to be able to receive current and predicted data via the drainage system 1 with his smartphone 61 and, accordingly, to initiate appropriate maintenance measures. For this purpose, the sensor data can be displayed in a dashboard that includes a clear representation of the most important key figures. It is also possible that citizens of a city can find out about possible floods in a certain area. It is also possible for the server 60 to send warning messages in the form of push messages, for example an e-mail, an SMS or another message, to users of mobile terminals 61.

FIG. 2 shows a possible drain body 10. The drain body 10 in the exemplary embodiment shown comprises an upper drain element 18 and a lower drain element 17. The trench elements 17, 18 are detachably connected to one another via spacer elements 19. Several

Trench elements together form a trench body 10 or a trench 10 which, among other things. is limited by trench wall elements 15 and trench ceiling elements 16. When in use, i.e. H. in the buried state, a water-permeable film, for example a flow, is wrapped around the drain body 10 in order to protect the drain body from penetrating soil.

FIG. 3 shows a drain body 10, which is arranged below a base plate 70. The base plate 70 is water-permeable. For this are Small holes are provided through the bottom plate 70, which run vertically to the floor level. In the exemplary embodiment shown, a moisture sensor 72 is arranged in one of these bores. The moisture sensor 72 is also designed to determine whether the surface of the base plate 70 is moist. The moisture sensor 72 is designed to transmit sensor data to a gateway device, for example the gateway device 51.

In addition to the holes vertical to the floor level 2, the floor plate 70 has longitudinal holes 71 that run parallel to the floor level and one

Have a diameter of approximately 2/3 of the height of the base plate 70. Through these longitudinal bores 71, cables can be laid on the one hand and waste water can be conducted on the other hand.

Below the base plate 70, a drain body 10 is arranged, which in the

Essentially corresponds to the drain body 10 of FIGS. 1 and 2. The

Rigid body 10 of Figure 3 has a temperature sensor 11 and a

Salinity sensor 12 on. The temperature sensor 11 is detachably attached to the underside of the drainage ceiling element 16, for example using a clip connection. The salinity sensor 12 is on top of one

Trench floor element 16 'releasably attached, in particular using a clip connection.

Reference list

1 drainage system

2 floor level

3 vegetation / tree

4 sewage pipe

5, 5 ', 5 "connecting line

6, 6 ', 6 "flow sensor

7 humidity sensor

8 backflow valve

9 base plate

10 drain bodies

11, 11 'temperature sensor

12 salinity sensor

13 Trench maintenance access Sediment sensor

Trench wall element

, 16 'trench ceiling element / trench floor element lower trench element

upper drainage element

Spacer

Rainwater collecting pipe

Gutter

Collection facility

, 31 'temperature sensor

Salinity sensor

Water level sensor

Backflow valve

Floor humidification unit

Rigid body

Temperature sensor

Salinity sensor

Trench maintenance access

Sediment sensor

Water level sensor

Antenna mast

Gateway

antenna

Water quantity sensor

server

mobile device

Base plate

Longitudinal bore

Humidity sensor

Claims

Expectations

1. Drainage system (1), comprising:

- At least one infiltration device (10, 40) that

is designed to absorb fluid;

- One in fluid communication with the at least one

Infiltration device (10, 40) standing collection device (30), which is designed to fluid the at least one

Pick up the infiltration device (10, 40) and deliver it to a fluid system (4),

marked by

- A gateway device (51) which is designed to receive sensor data and to send it to a receiving unit, in particular a server device (60);

- At least one communicative with the gateway device (51)

connected sensor, in particular an environmental sensor (6, 6 ', 7, 11, 1, 14, 31, 3, 32, 33, 41, 44, 42, 45), for delivering sensor data.

2. Drainage system (1) according to claim 1,

characterized in that

the at least one sensor (6, 6 ', 7, 11, 1, 14, 31, 3, 32, 33, 41, 44, 42, 45) is designed to determine the sensor data at a substantially constant frequency and / or deliver.

3. Drainage system (1) according to one of the preceding claims, in particular according to claim 2,

characterized in that

the at least one sensor (6, 6 ', 7, 11, 1, 14, 31, 3, 32, 33, 41, 44, 42, 45) is designed between a rest phase and a

Switch active phase, the determination and / or delivery is carried out only in the active phase.

4. Drainage system (1) according to any one of the preceding claims, characterized in that

the at least one sensor (6, 6 ', 7, 11, 1, 14, 31, 3, 32, 33, 41, 44, 42, 45) in the at least one infiltration device (10, 40) and / or is arranged in the collecting device (30), in particular at least partially in a maintenance shaft of the at least one infiltration device (10, 40) and / or the collecting device (30).

5. Drainage system (1) according to one of the preceding claims, characterized in that

the at least one infiltration device (10, 40) has a first temperature sensor (11, 1, 41) and the collecting device (30) has a second temperature sensor (31, 3G), the

Infiltration device (10, 40) and the collecting device (30) are arranged at different depth levels with respect to a floor level (2).

6. Drainage system (1) according to any one of the preceding claims, characterized in that

the at least one sensor is designed as a sediment sensor (14, 44), in particular as an ultrasonic sensor (14, 44), for detecting deposits in the at least one infiltration device (10, 40).

7. Drainage system (1) according to one of the preceding claims, in particular according to claim 6,

characterized in that

the sediment sensor (14, 44) is arranged in an access shaft (13, 43) of the at least one infiltration device (10, 40).

8. Drainage system (1) according to one of the preceding claims, characterized by

at least one backflow valve (34, 8) in the collecting device (30) and / or in a fluid system (4), in particular in a sewage system (4), for blocking backflow fluid, in particular waste water.

9. Drainage system (1) according to one of the preceding claims, characterized by

at least one drainage device (9, 20) for draining surface and / or rainwater, which is in fluid communication with the at least one infiltration device (10, 40).

10. Drainage system (1) according to any one of the preceding claims, characterized in that

the at least one drainage device (9) is designed, in particular, as a water-permeable base plate (9) and / or a drainage element, the base plate (9) and / or the

Drainage element is designed to receive at least one sensor (72), in particular an environmental sensor (72), on its surface facing away from the earth.

11. Drainage system (1) according to one of the preceding claims, in particular according to claim 10,

characterized in that

one / the base plate (9) comprises a sensor receptacle, in particular a through hole for receiving a sensor (72), preferably an environmental sensor (72).

12. Drainage system (1) according to any one of the preceding claims, characterized by

a server device (60) which is communicatively connected to the gateway device (53) and is designed to receive the sensor data

receive.

13. Drainage system (1) according to one of the preceding claims, in particular according to claim 12,

characterized in that

the server device (60) has a computing device which is designed to parameterize a simulation model using the sensor data and / or to learn a simulation model.

14. Drainage system (1) according to one of the preceding claims, in particular according to claim 13,

characterized in that

one / the simulation model indicates a water level in the at least one infiltration device (10, 40) and / or in the collecting device (30) as a function of a quantity of introduced fluid, in particular of waste water.

15. trench (10) for use in a drainage system (1) according to any one of the preceding claims, comprising

- a lower drainage element (17);

- An upper drainage element (18);

- Spacers (19) over which the lower and the upper

Trench element (17, 18) can be connected to one another;

marked by

at least one sensor (11, 1) arranged on the lower and / or on the upper drainage element (17, 18) for delivering sensor data, in particular an environmental sensor (11, 1).