Water consumption management system and this system-comprehensive washing facility for construction machinery

Abstract

Water consumption management system comprising at least one control unit (2), one remote server (1), one user unit (3), and one measuring unit (4), wherein the remote server (1) contains a database for storing data about the users that it has received from the control unit (2), and wherein each control unit (2) is communicatively connected to the remote server (1), characterized in that each control unit (1) comprises a display (6) and an input peripheral, each user unit (3) comprises an identification data reader (5), a display (7) for showing user information, and an operating element (12) for controlling water withdrawal, and each measuring unit (4) comprises a flow sensor (8) and an electrically actuated valve (9), wherein each user unit (3) is communicatively connected to at least one control unit (2) and communicatively connected to at least one measuring unit (4).

Description

Technical field

[0001] The present technical solution concerns a system for controlling and monitoring water consumption drawn by various users. State of the art

[0002] Systems for monitoring water consumption are currently available. Efforts are underway to monitor and control water consumption in various sectors, given the focus on water conservation, energy efficiency, and environmental sustainability. Monitoring and controlling water consumption is important in various industrial settings, such as construction equipment washing facilities, as well as in agricultural areas, such as community gardens and allotment colonies. This is particularly relevant in facilities and areas where a large number of users interact with water, which can lead to significant water waste.

[0003] Document CN216486779U discloses a device used for remote monitoring of water consumption. This device includes a camera that reads a standard water meter and may also contain a button and an alarm to indicate increased water consumption. In this way, the device can warn of undetected water leaks. The disadvantage of this solution is the use of a camera to capture the water meter reading, which can lead to inaccuracies in the readings. Another disadvantage is that the device does not allow for immediate control of water consumption based on varying operating conditions.

[0004] Document CN105823521A describes a system for monitoring both water consumption and water quality. The system collects and processes data on water consumption and quality at various locations. A disadvantage of the system is that it does not allow for direct control of water consumption.

[0005] It would be useful to find a solution that allows monitoring and control of the water consumption of different users. Nature of the technical solution

[0006] The shortcomings of solutions known in the prior art are overcome to a certain extent by a water consumption management system comprising at least one control unit, one remote server, at least one user unit, and at least one metering unit. The remote server contains a database for storing user data received by the control unit, and each control unit is communicatively connected to the remote server. Each control unit includes a display and input peripherals, each user unit includes an identification data reader, a display for showing user information, and a control element for controlling water withdrawal, and each metering unit includes a flow sensor and an electrically actuated valve. Each user unit is communicatively connected to at least one control unit and at least one metering unit.

[0007] The user unit allows individual users to authenticate themselves within the system using their identification data, thus enabling them to obtain water from the metering unit for their desired use. The user unit is therefore the interface through which standard users communicate with the system – they authenticate themselves, and if the authentication is successful, they turn the water on and off when finished, or the water is automatically shut off when the water limit is reached. A user unit is preferably designed for multiple users; it doesn't have to be a single user's device, but is ideally a fixed component of the system with changing users. However, in some system variants, the use of individual wearable devices – smartphones or smartwatches, etc. – is also possible.The control unit can then be implemented, for example, on a remote server with which users communicate via a mobile application, and at the water extraction point there is only a measuring unit that enables water extraction on the instruction of the server.

[0008] The metering unit is designed to switch the water supply on and off for a specific user authorized via a particular user unit. It can be attached, for example, to a hose or pipe from which the user wishes to draw water near the user unit. Its main component is the aforementioned valve, which can be operated from the user unit according to the authorized user's instructions. It can also be operated (or at least closed) automatically when the user's water withdrawal limit is exceeded. This automatic closure can be performed by the control unit, the user unit, or the metering unit itself if it contains a processor to compare the water already drawn with the predefined limit. Thus, the metering unit can be designed to be located near the water withdrawal point—faucet, hose, nozzle, pipe, etc.- is arranged, to which a user unit can be assigned at the same time.

[0009] The control unit serves to control the system or a part of the system, mediating communication between the measuring unit and / or the user unit and the database where the data from it is stored. This data can be acquired automatically, e.g., automatically saved information about the amount of water drawn after the user logs out of the user unit, the date and time of the draw, etc., and it can be saved manually—e.g., a user request to increase the water withdrawal limit, a system administrator setting to adjust the limit for a specific user, etc. The database on the remote server is used to store data that serves to control the system (e.g., limit values) or as documentation for the system administrators (e.g., the company that operates the car wash and owns the system).Data on consumption, utilization of the withdrawal points, etc.).

[0010] The control unit is suitable for managing and configuring the entire system. The control unit authorizes access for the authorized system administrator. Authorization can be granted by entering a username and password, inserting a hardware key, using biometric data, or through another common authorization method. The authorized system administrator can use the control unit to enter information about other users and their water consumption limits. The control unit can also display to the authorized user the status of individual users, as well as information about total consumption, individual user consumption, set limits, malfunctions, unauthorized water withdrawal attempts, and other data. The control unit can transmit this information to a remote server.If only one control unit is connected to the system, the data on the remote server serves as a backup. In the event of a control unit malfunction or its settings being deleted, data can be transferred from the remote server to the control unit, thus restoring its functionality. If the control unit has been replaced, the data can be transferred from the server to the new control unit. If multiple control units are connected to the system, the data on the remote server can be transferred to each connected unit, thereby synchronizing the data between them. This is particularly advantageous when the water consumption management system is used to control water consumption in different facilities. User information can then be available in the control units of each facility.The communication link between the control unit and the remote server can be wired, e.g. via a wired internet connection, or wireless, e.g. via a Wi-Fi, microwave or satellite connection.

[0011] The control unit can include a computer with a web server that facilitates the connection to the control unit from a variety of devices, enabling the display of web pages, such as computers, mobile phones, tablet PCs, and others.

[0012] Preferably, the control unit can include a terminal that provides access to system administration. This can increase the security of the entire system, as it is not possible to connect to the system with any device other than a terminal.

[0013] The control unit can be equipped with an identification data reader. This can be used to add information about new users to the system.

[0014] The input peripherals for the control unit can be a keyboard and a mouse. Advantageously, the input peripherals can also be a touchscreen. This can offer better resistance in dusty environments and also reduces the space required for the control unit.

[0015] The user unit can be installed near the water outlet. Advantageously, the user unit is splash-proof from all directions, i.e., waterproof. The user identifies themselves to the user unit using their identification data, which the user unit reads via the identification data reader. This identification data is evaluated by the control unit, which also sends information about the set water consumption limits to the user unit. The user unit displays the limits and the current consumption to the user on its screen.

[0016] The system functions as follows: The user initiates water withdrawal by interacting with the water withdrawal control element. If the user has a free water withdrawal limit, the user unit sends a signal to the measuring unit, which opens the electrically operated valve and thus starts the water withdrawal. The water flow sensor in the measuring unit records information about the amount of water withdrawn. This information can be displayed on the user unit and is also transmitted to the control unit and compared with the set consumption limit. The moment the amount of water withdrawn corresponds to the set water withdrawal limit, the user unit sends a signal to the measuring unit, which closes the electrically operated valve and thus stops the water withdrawal.The user can also stop water withdrawal using the water withdrawal control unit. This, in turn, sends a signal to the measuring unit, which closes the electrically operated valve. Information about the user, water consumption, as well as the point of use, the start and end of the withdrawal, etc., can be recorded by the control unit, which then sends this information to a remote server. The system is therefore preferably able to automatically close the electronically operated valve when the limit value, stored in the database for a specific user and authorized for the current water withdrawal on the user's device, is exceeded.

[0017] The control element for water dispensing can be a button that starts and stops the dispensing process. In other words, if no water is being drawn, pressing the button starts the dispensing process, and if water is being drawn, pressing the same button stops the dispensing process. For clarity, this control element can preferably consist of a pair of buttons. One button starts the dispensing process, and the other stops it. For further clarity, the buttons can be of different colors and / or sizes.

[0018] Multiple user units can be connected to the system. Each user unit has its own unique identification address. The control unit uses this address to identify a specific user unit. This allows the control unit to communicate with the individual user units and enter information about withdrawals from each unit into the database.

[0019] The measuring unit can be connected to the water distribution system near the water outlet. Preferably, the measuring unit can be positioned near the water outlet in such a way that it is simultaneously inaccessible to the user. This reduces the possibility of tampering with the measuring unit and can prevent unauthorized access.

[0020] The system allows for the connection of multiple measuring units, with each measuring unit communicating directly with one user unit. This means that each user unit is directly connected to one measuring unit; that is, the number of user units equals the number of communication units. The advantage of this arrangement lies in the simplified solution for both the user unit and the measuring unit. In this case, it is unnecessary to address or otherwise identify the measuring units within the user unit.

[0021] A user unit can be connected to the system, to which several measuring units can be connected. This allows multiple measuring units to be controlled from a single user unit, which can be connected to different water supplies, such as hot and cold water inlets. Alternatively, two or more water outlets can be located near the user unit, with a measuring unit connected to each outlet. All of these measuring units are controlled from a single user unit, to which the measuring units are communicatively linked. The user unit can therefore include multiple outputs for communication with individual measuring units, which in this case do not require any modification.Or can the user unit include an output of the communication link and the individual measuring units are communicatively connected to this input and are identified during the communication by an addressing system, resulting in lower costs for setting up the communication link?

[0022] The advantage of this solution is that the water consumption management system can be implemented with minimal intervention in existing water supply systems. Another advantage is its fully modular design, allowing it to be adapted to different conditions, such as multiple water outlets. Furthermore, this solution can be used to monitor and control the consumption of all authorized users, thereby reducing water waste and preventing unauthorized water withdrawals.

[0023] The measuring unit can include a manually operated valve for water withdrawal, which includes a valve control element, the valve control element being equipped with a locking mechanism. In the event of a system failure or power outage, it is advantageous to maintain the possibility of water withdrawal. The measuring unit can also include a manually operated valve with a valve control element connected in parallel to the electrically operated valve. In other words, the manually operated valve bypasses the electrically operated valve and allows water withdrawal even in the event of a system failure or power outage when the electrically operated valve cannot be opened. A locking mechanism, e.g.,A mechanical or electronic lock then prevents the misuse of this manually opened valve - only users who possess a key, a code or other means to unlock the locking mechanism can bypass the authorization required for standard water withdrawal via the control unit.

[0024] The manually operated valve can also be an electrically actuated valve equipped with a manual operating system. This electrically actuated valve includes a control element that allows the valve to be opened manually without an electrical signal. In this case as well, the control element or access to it is secured by a locking mechanism, such as a mechanical or electronic lock, to prevent unauthorized use.

[0025] The measuring unit can also include a temperature sensor that measures the water temperature. In this case, the user unit can include an alarm that is activated when the temperature falls or rises to a certain value. The user unit can display the water temperature information on its screen.

[0026] The valve's control element is therefore equipped with a locking mechanism, and this locking mechanism must first be removed for manual operation of the valve. This secures the valve against misuse during normal operation.

[0027] A database on a remote server can preferably be an online database, which allows for easy but secure access, scalability and high performance.

[0028] The database can contain data on the user's name, the assigned user identification information, the user's set water consumption limit, and the user's current consumption. In addition to this data, the database preferably includes timestamps, i.e., the time the water withdrawal began and ended. Furthermore, it can contain information on the user unit the user identified themselves to and the metering unit from which the user drew water. The database can also include other data processed by the control unit or calculated from the acquired data, such as the average consumption over a specific period, the average consumption at a particular user unit, etc.

[0029] Preferably, the communication link between the control unit and all user units is wireless. It is possible to use the LoRa wireless technology at a frequency of 868 MHz, which is secured by encryption and thus protects against various attacks and ensures data integrity during transmission.

[0030] Preferably, the communication link between each user unit and each measuring unit is wired. The wired connection between the user unit and the measuring unit enables the transmission of control signals for the electrically actuated valve, the transmission of a signal from the flow sensor, and the power supply to the measuring unit.

[0031] Preferably, at least one, and more preferably each, measuring unit comprises a water flow sensor as a pulse flow meter. This flow meter generates a pulse after a certain quantity of water has flowed through. These pulses are recorded by the user unit, which calculates the water consumption from the number of pulses.

[0032] Preferably, at least one, and more preferably each, measuring unit contains an electromagnetic (solenoid) valve. The electromagnetic valves are robust and reliable, while simultaneously enabling precise and rapid flow control.

[0033] Advantageously, the identification data reader is an RFID tag reader, which is particularly beneficial for each user unit in the system. In this case, each user is assigned at least one RFID tag that identifies them. For example, to add a new user to the system, the authorized person enters the RFID tag code assigned to the new user into the control unit. An RFID tag reader is conveniently connected to the control unit, allowing it to read a new RFID tag and assign it to a new user. The identification data reader in each user unit also functions as an RFID tag reader.

[0034] The identification data reader can be a fingerprint reader. In this case, a fingerprint reader is connected to the control unit to read the fingerprint or fingerprints of each new user. These fingerprints then serve as the identification data to identify a specific user, meaning that the identification data reader in each user unit is also a fingerprint reader.

[0035] Preferably, at least one measuring unit can include a heating element. The heating element can heat the flow meter, the electrically actuated valve, and the pipe connecting the flow meter and the electrically actuated valve. If the measuring unit includes a manually actuated valve, the heating element can heat it. The heating element thus ensures an appropriate operating temperature and prevents the water from freezing under unfavorable climatic conditions in the vicinity of the measuring unit. This ensures that the flow meter and the electrically actuated valve function properly even at ambient temperatures below 0°C.

[0036] The measuring unit can comprise a pipe in which the aforementioned components – valve, flow sensor, and optionally a heating element – ​​are installed. Alternatively, the measuring unit can also consist solely of the aforementioned electronic components for mounting on pipes or other water lines.

[0037] The shortcomings of solutions known in the prior art are overcome to a certain extent by a construction machinery washing system that includes a water supply, at least one washing nozzle, and a water consumption management system according to the present solution, wherein the measuring unit is connected to the water supply to the construction machinery washing system. The construction machinery washing system can be a fixed installation for washing construction machinery before it is parked. Alternatively, the construction machinery washing system can be a mobile unit that can be moved to different locations, such as a construction site, to clean construction machinery before it is driven onto the road. A measuring unit connected to the water supply can detect the amount of water flowing into the washing nozzle, and the water inlet can be opened or closed by an electrically operated valve.

[0038] The user unit is located in a user-accessible location near the washer nozzle. The control unit can be positioned in such a way that access to it is restricted for normal users while simultaneously protecting it from harmful influences. For example, the unit can be placed in an office building, an enclosed control cabinet, or another protected location.

[0039] The operation of this car wash can function as follows, for example: Once the user has identified themselves at the user unit, the user unit communicates with the control unit, which confirms the identification and determines the set water consumption limit. When water is drawn from the user unit via the water consumption control element, the user unit sends a signal to the measuring unit, which opens the electrically operated valve at the water inlet to the car wash. Simultaneously, the flow sensor measures the water consumption. As soon as the limit is reached, or the user signals the end of water consumption at the user unit using the water consumption control element, the user unit sends a signal to the measuring unit to close the electrically operated valve, thus stopping the water supply to the car wash.Information about consumption, user unit identification, user identification, date and time of the start and end of water withdrawal, and more can be sent from the control unit to a database on a remote server.

[0040] The washing system for construction machinery can be used in the concrete industry in concrete mixing plants for cleaning empty concrete vehicles, where there is high water consumption.

[0041] The water consumption management system can be used in community gardens and allotment colonies that have a shared water supply. The metering unit is connected to this shared water supply and communicates with the user unit. Individual water users are identified at the user unit using their identification data and can then initiate water withdrawal. The water consumption is measured by the metering unit, and this information is processed by the control unit, which can send it to a remote server. Based on this information, the costs for shared consumption can then be allocated to the individual users.

[0042] The water consumption management system can be used in communal accommodations such as student dormitories, hostels, campsites, etc., which have common areas where water is consumed. The metering unit is connected to the water supply of the common areas and is also in communication with the user unit, which can be located near the water tap. The user unit is in communication with the control unit. Users identify themselves at the user unit with their assigned identification data and thus control their water consumption. Water consumption is measured by the metering unit, and this information is processed by the control unit, which can send it to a remote server. Based on this information, it is then possible to allocate the costs of shared consumption to the individual users. Explanation of drawings

[0043] The essence of the invention will be further explained with reference to exemplary embodiments, which are described with the aid of accompanying drawings showing: Fig. 1. Schematic representation of the control unit. Fig. 2. Schematic representation of the user unit. Fig. 3. Schematic representation of the measuring unit. Fig. 4. Schematic representation of the block diagram of the communication link of the water consumption management system. Examples of the technical solution

[0044] The technical solution is explained in more detail using exemplary embodiments with reference to the corresponding drawings.

[0045] The system for controlling and monitoring water consumption, which in the main embodiment is in Fig. As shown in section 4, in this embodiment it comprises a remote server 1, a Fig. 1 control unit 2, shown, one in Fig. 2 user unit shown 3 and one in Fig. 3. Measuring unit 4. The remote server 1 contains a database, and the control unit 2 is connected to the remote server 1 via a fixed internet connection. The database contains information about the individual users and their assigned identification data, information about the set consumption limits and the current consumption, as well as information about the date and time of consumption.

[0046] The control unit 2 comprises an identification data reader 5, which in this main embodiment is an RFID tag reader, and a touchscreen display 6 of the control unit 2, on which data is displayed and which also serves as an input peripheral for entering user information and controlling system settings. System administration is performed by an authorized person who is authorized to the control unit 2 with a name and password. In this main embodiment, the control unit 2 is connected to the user unit 3. This connection is established via LoRa technology at a frequency of 868 MHz. The user unit 3 comprises a display 7, an identification data reader 5, which in this main embodiment is an RFID tag reader, and operating elements 12 for controlling water withdrawal, i.e.,One button to start water extraction and one button to stop water extraction.

[0047] Once the user has identified themselves by attaching their RFID tag to the identification data reader 5, the user unit 3 reads the identification data, which is then verified by the control unit 2. The user unit 3 displays the user's identification and information about the set consumption limit on its display 7. A measuring unit 4 is wired to the user unit 3 and comprises a flow sensor 8 and an electrically actuated valve 9. In this main embodiment, the flow sensor 8 is a pulse flow meter, and the electrically actuated valve 9 is a solenoid valve equipped with a manual actuation system that includes a valve control element.

[0048] After installing the system, with measuring unit 4 mounted on the water inlet, this water inlet 10 is connected to the inlet of the pulse flow meter, and the pulse flow meter is connected to the solenoid valve. The solenoid valve can be manually operated by turning its control knob. Access to the control knob is secured with a padlock. Turning the control knob, i.e., manually opening the valve, is only possible after the padlock has been removed, thus granting access to the control knob. Once the user presses the water dispensing button on the user unit 3, the user unit 3 sends a signal to measuring unit 4, which opens the solenoid valve. Simultaneously, the pulse flow meter records the flow rate, and the user unit 3 processes this information.This provides information about consumption, which is compared to the set limit. The moment water consumption reaches the set limit, user unit 3 sends a signal to measuring unit 4, which closes the solenoid valve and thus stops the water flow. The water flow can also be stopped by pressing a button on user unit 3, which in this case also sends a signal to measuring unit 4, closing the solenoid valve. User unit 3 sends information about water consumption, as well as the date and time of use, to control unit 2, which processes this information and sends it to the database on remote server 1.

[0049] A second embodiment is a washing system for construction machinery, comprising a water inlet 10, a hose with a washing nozzle, an area for washing construction equipment, and a water consumption management system. In this exemplary embodiment, the washing system is primarily intended for cleaning construction machinery such as trucks, concrete mixers, and other construction equipment of mud or concrete mix residue. The measuring unit 4 is connected to the water inlet 10, and a hose ending in a washing nozzle is connected to the water outlet 11. In this exemplary embodiment, the user unit 3 has a button for starting water withdrawal, another button for stopping water withdrawal, and is located in the area for washing construction equipment. It is connected to the measuring unit 4 via a cable connection.

[0050] Control unit 2 is a touchscreen computer located in an enclosed control cabinet outside the construction equipment washing area. Control unit 2 is connected to user unit 3 via a wireless LoRa network operating at a frequency of 868 MHz. It is also connected to the internet, and thus to remote server 1, via a wired connection. In this example configuration, identification data reader 5 is an RFID tag reader. Both control unit 2 and user unit 3 are equipped with an RFID tag reader. Control unit 2 manages the washing system and maintains information about individual users and their set consumption limits.

[0051] In this exemplary embodiment, the flow sensor 8 in the measuring unit 4 is a pulse flow meter, and the electrically actuated valve 9 is a solenoid valve equipped with a manual actuation system that includes a valve control element. In this embodiment, this control element is secured by a padlock. Operation of this control element is only possible after the padlock has been removed. This allows water to be drawn in certain exceptional situations, such as a system failure, a power outage, or when an emergency water supply is required due to reaching the set limit value, and thus enabling the washing of the machines. Under normal operating conditions, the user controls the water supply at the user unit 3, which sends a signal to the measuring unit 4 to open and close the solenoid valve.Water consumption for the washing system is measured by measuring unit 4 using a pulse flow meter. The signal from the pulse flow meter is processed by user unit 3 and compared with the set consumption limit. The solenoid valve closes when water consumption reaches the set limit or when the user stops water consumption at user unit 3. Information about the water usage, including timestamps, is transmitted to control unit 2, which then sends this information to remote server 1. Alternative version

[0052] The following describes alternative embodiments of the various features of the technical solution, which can be combined where possible. The remaining features of these alternative embodiments are identical to those of the main embodiment.

[0053] In another exemplary embodiment of the system for controlling and monitoring water consumption, the control unit 2 is a computer with a web server, and the input peripherals are a computer keyboard and a computer mouse.

[0054] In another exemplary embodiment, the system for controlling and monitoring water consumption includes a manually operated valve for water withdrawal, which is connected in parallel to the electrically operated valve 9. The operating element of the manually operated valve is secured with a padlock.

[0055] In another exemplary embodiment, the system for controlling and monitoring water consumption comprises two control units 2 and two user units 3, wherein one user unit 3 is wirelessly connected to each control unit 2.

[0056] In another exemplary embodiment of the system for controlling and monitoring water consumption, the user unit 3 includes two outputs for connecting two measuring units 4.

[0057] In another exemplary embodiment of the system for controlling and monitoring water consumption, the control unit 2 and the user unit 3 are wired.

[0058] In another exemplary embodiment of the system for controlling and monitoring water consumption, the user unit 3 and the measuring unit 4 are wirelessly connected.

[0059] In another exemplary embodiment of the system for controlling and monitoring water consumption, the identification data reader 5 is a fingerprint reader. In this exemplary embodiment, the control unit 2 includes a fingerprint reader and the user unit 3 includes a fingerprint reader.

[0060] In another exemplary embodiment of the system for controlling and monitoring water consumption, the measuring unit 4 includes a heating element, which is a resistance wire. This resistance wire is located on the pipe connecting the flow sensor 8 and the electrically actuated valve 9, as well as on the pipe from the water inlet 10 to the flow sensor 8 and on the pipe from the electrically actuated valve 9 to the water outlet 11. Other features of this embodiment are implemented as in the main embodiment. Commercial applicability

[0061] The water consumption management system can be used in various industries where multiple users have access to water. The system allows users to be assigned water consumption limits and their individual water usage to be monitored. This can lead to optimization and reduction of water consumption, as well as cost savings. The water consumption management system can be used in the concrete industry to monitor and control water consumption during the cleaning of concrete trucks. It can also be used to monitor and control the water consumption of individual users in communal areas or from a shared water supply, such as in some accommodation establishments or community gardens and allotment colonies.The water management system can also be used in food production to monitor and control water consumption in individual phases of the production process, e.g., during cleaning, cooling, or steam generation, and the water consumption management system can also be used in the mining industry, where it can monitor water consumption during the various mining processes and raw material preparation. Reference symbol list 1 Remote Server 2 Control unit 3 user units 4 Unit of measurement 5 identification data readers 6 Control unit display 7 User unit display 8 Flow sensor 9 Electrically operated valve 10 Water inlet 11 Water outlet 12 Control element for controlling water withdrawal QUOTES INCLUDED IN THE DESCRIPTION

[0000] This list of documents cited by the applicant was automatically generated and is included solely for the reader's convenience. The list is not part of the German patent or utility model application. The DPMA accepts no liability for any errors or omissions. Cited patent literature

[0000] CN 216486779U

[0003] CN 105823521A

[0004]

Claims

[1] Water consumption management system comprising at least one control unit (2), a remote server (1), at least one user unit (3), and at least one measuring unit (4), wherein the remote server (1) contains a database for storing data about the users received from the control unit (2), and wherein each control unit (2) is communicatively connected to the remote server (1), characterized by in that each control unit (1) comprises a display (6) and an input peripheral, each user unit (3) comprises an identification data reader (5), a display (7) for displaying user information and an operating element (12) for controlling the water withdrawal and each measuring unit (4) comprises a flow sensor (8) and an electrically operated valve (9), wherein each user unit (3) is communicatively connected to at least one control unit (2) and is communicatively connected to at least one measuring unit (4). [2] System according to claim 1, characterized by that the at least one measuring unit (4) comprises a manually opened valve for water extraction, which comprises an operating element of the valve, wherein the operating element of the valve is provided with a locking mechanism. [3] System according to one of the preceding claims, characterized by that the database on the remote server (1) is an online database. [4] System according to one of the preceding claims, characterized by that the database includes data on the user's name, data on the assigned identification information for the user, data on the set water consumption limit for the user and data on the user's current consumption. [5] System according to one of the preceding claims, characterized by that the communication connection between the control unit (2) and the user unit (3) is wireless. [6] System according to one of the preceding claims, characterized by that the communication connection between the user unit (3) and the measuring unit (4) is wired. [7] System according to one of the preceding claims, characterized by that the water flow sensor (8) is a pulse flow meter. [8] System according to one of the preceding claims, characterized by that the electrically operated valve (9) is an electromagnetic valve. [9] System according to one of the preceding claims, characterized by that the identification data reader (5) is an RFID chip reader. [10] System according to one of the preceding claims, characterized by that the measuring unit (4) comprises a heating element. [11] Washing system for construction machinery, comprising a water inlet (10) and at least one washing nozzle, characterized bythat it comprises a water consumption management system according to one of the preceding claims, wherein the measuring unit (4) is connected to the water inlet (10) in the washing system for construction machinery.

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