EP3483449A1 - Procédé de surveillance d'une pompe centrifuge à régulation électronique - Google Patents

Procédé de surveillance d'une pompe centrifuge à régulation électronique Download PDF

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Publication number
EP3483449A1
EP3483449A1 EP17001850.1A EP17001850A EP3483449A1 EP 3483449 A1 EP3483449 A1 EP 3483449A1 EP 17001850 A EP17001850 A EP 17001850A EP 3483449 A1 EP3483449 A1 EP 3483449A1
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EP
European Patent Office
Prior art keywords
configuration
centrifugal pump
handset
operating configuration
operating
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP17001850.1A
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German (de)
English (en)
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EP3483449B1 (fr
Inventor
Thomas Block
Stefanos KAPSOKE
Markus Müller
Till JACKENROLL
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Wilo SE
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Wilo SE
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Publication of EP3483449A1 publication Critical patent/EP3483449A1/fr
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D13/00—Pumping installations or systems
    • F04D13/12—Combinations of two or more pumps
    • F04D13/14—Combinations of two or more pumps the pumps being all of centrifugal type
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
    • F04B49/06—Control using electricity
    • F04B49/065—Control using electricity and making use of computers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
    • F04B49/10—Other safety measures
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D15/00—Control, e.g. regulation, of pumps, pumping installations or systems
    • F04D15/0088—Testing machines

Definitions

  • the invention relates to a method for monitoring an electronically controlled centrifugal pump of a hydraulic system whose operation can be determined by a changeable operating configuration. Moreover, the invention relates to a system for carrying out the method as well as a loadable on the handset computer program with commands that cause the handset when performing on the handset to perform those steps, which are provided in the context of the inventive method, executed by the handset to become. Finally, the invention also relates to a computer-readable storage medium with the computer program.
  • centrifugal pumps used to run unregulated at a single fixed speed, speed-regulated centrifugal pumps have long been in use, attempting to adapt their pumping power, in particular their operating point determined by the delivery pressure and flow rate, to the needs of the hydraulic system so as to save energy.
  • a control for example a pressure control, which requires the actual value of the controlled variable, which can be determined by measurement or by means of a sensor or mathematically from other variables or based on a model (observer, estimation).
  • the controller parameterized with regard to its control parameters in particular for the control but also a setpoint must be specified. In any case, at least the latter is dependent on the hydraulic system to make in which the centrifugal pump is integrated, such as a heating, cooling or drinking water supply systems for hot or cold water water circulation, storage loading or pressure increase.
  • Centrifugal pumps now offer a wide range of different operating modes, in particular control modes, to meet their plant-specific purpose. Widely used here are the control mode to constant differential pressure ( ⁇ p-c) or the control of variable differential pressure ( ⁇ p-v), in particular the proportional pressure control. Also known are temperature control methods such as a control to a constant target temperature (cT) or a control to a specific differential temperature (.DELTA.T-c) as used for example in heating systems of condensing or systems with heat exchanger or hydraulic switch. Another mode is, for example, the constant speed operation, which can also be frequently selected in centrifugal pumps. Each of these control types offers different setting options, in particular the selection of a specific control characteristic from a multiplicity of different control characteristics.
  • centrifugal pump in a hydraulic system requires a concrete adjustment or adaptation of their operating configuration to their operating purpose or to the hydraulic system. It is the task of a professional, for example, the installer to correctly perform this configuration of the centrifugal pumps during their installation or during commissioning of the hydraulic systems, which is usually the knowledge of the physical control relationships on the one hand, the Pumpeneinstellk (HQ pump map) and the hydraulic systems in which the centrifugal pump is installed is, on the other hand, required. Finally, however, the configuration can be changed again at any later time.
  • centrifugal pump or pumps After the installation and commissioning of the centrifugal pump or pumps takes place, at least in large plants with some ten or even a few hundred pumps, as they are found in airport buildings, exhibition halls but also in many public buildings such as hospitals, schools, hotels, office buildings, etc.
  • one Regular checking of functionality be it in the simplest case, for example, by a visual inspection.
  • modern pump units indicate, for example by means of an indicator or on a pump display, whether they are in order or have detected a malfunction.
  • the object of the invention is to provide a method and a computer program which enables the skilled person, an installer or maintenance technician, to quickly and easily recognize whether a centrifugal pump has been displaced since the last operating configuration, i. the configuration has been changed.
  • a method for monitoring an electronically controlled centrifugal pump of a hydraulic system whose operation can be defined by a changeable operating configuration at a first time in which the centrifugal pump at a later, second time at least one their current operating configuration characteristic configuration information to a mobile handset or transmitting a server which compares this configuration information with a second configuration information identifying the last operating configuration known to the handset or server, and that a change notice is issued on the handset if the transmitted configuration information does not match the second one Configuration information matches.
  • This change note is then the expert notice that the operating configuration has been adjusted on the centrifugal pump. He can then examine them in detail and correct them if necessary.
  • centrifugal pump As a centrifugal pump is in the context of the invention, a device at least consisting of a pump unit for conveying a liquid, a drive unit in the form of an electric motor which drives the pump unit, and a pump electronics for controlling and / or regulating the electric motor, said structurally combined or only can be functionally cooperative. Furthermore, sensors such as volume flow or pressure sensors can be part of the centrifugal pump.
  • the hydraulic system may be, for example, a heating system, a cooling system or a drinking water supply system
  • the handset may be, for example, a mobile phone, in particular a smartphone.
  • the handset may also be a tablet, a laptop or a mobile device used specifically for the configuration and / or monitoring of the centrifugal pumps.
  • Such a handset usually has a screen on which the change notice can be displayed.
  • the data transmission between the hand-held device and the centrifugal pump can take place by means of a short-range radio technology, for example Bluetooth, NFC, WLAN, RFID, ZigBee or the like.
  • the centrifugal pump and the handset may comprise a radio module adapted for communication by means of one of said radio protocols.
  • the computer program also referred to below as the software application, can be loaded onto the hand-held device and executed there in order to carry out the method steps which are provided for execution by the hand-held device in the context of the method according to the invention.
  • the computer program is set up to receive and evaluate the configuration information and to cause the handset to display the change notice on the screen.
  • the server is a remove server, for example a server of a so-called cloud, which manages data of the centrifugal pump.
  • the centrifugal pump can have a wired or wireless communication connection to a network, for example a LAN, WLAN, CAN or the like, in particular to the Internet.
  • a computer program is operated on the server, which is set up for receiving and evaluating the configuration information and for generating and sending the notification of change to the handset.
  • the computer program executed on the handset may be set up to receive this change notice and then cause the handset to display the change notice on the screen.
  • the server variant has the advantage that the hand-held device, with which the person skilled in the art is on site with the centrifugal pump, does not require high computing power and no large memory space for carrying out the method. This advantage is particularly noticeable with a large number of centrifugal pumps to be checked and the more noticeable the larger this number is.
  • the centrifugal pump may be set up to emit the configuration information repeatedly, in particular periodically as a broadcast signal, the handset receiving this broadcast signal in an activated listening mode.
  • the centrifugal pump may be set up to emit the configuration information repeatedly, in particular periodically as a broadcast signal, the handset receiving this broadcast signal in an activated listening mode.
  • the handset may be configured to send a request to the centrifugal pump, which then triggers the centrifugal pump to send the configuration information.
  • the centrifugal pump can be set up to repeatedly transmit the configuration information, in particular periodically to the server. Alternatively, this transmission may be in response to a request that the handset sends to the centrifugal pump.
  • the sending of the request from the handset can for example be done automatically, if or immediately after the computer program is started on the handset. If necessary, it can also automatically activate the listening mode when starting it in the handset or cause the handset to go into listening mode.
  • the at least one configuration information may be an operating parameter or an operational setting of the operating configuration of the centrifugal pump.
  • an operating parameter may be, for example, the set reference value of the set control or a characteristic value defining the set control characteristic or actuator characteristic.
  • the operating parameter or setting is such a setting that would most likely be changed, such as the desired head of the centrifugal pump. While such a value does not identify the operating configuration versus operating configurations of other centrifugal pumps, presumably many centrifugal pumps will operate at the same desired head, however, an operating parameter or setting will suffice to perform a prior-after comparison within the meaning of the invention.
  • two, three or more operating parameters or operating settings can also be transmitted from the centrifugal pump to the handheld device or the server.
  • the centrifugal pump can be transferred all its current or part of the current operating configuration to the mobile handset or the server. This or this virtually forms a fingerprint of the pump. If the entire operating configuration is transmitted, all types of changes to the centrifugal pump can be detected. If, on the other hand, only a part of the configuration is transmitted, only one change corresponding to an operating parameter contained in this part of the operating configuration or contained operating setting can be detected accordingly.
  • That part may include operating parameters and / or operating settings that are mission critical, i. can negatively affect the proper operation of the hydraulic systems.
  • this includes the desired value of the control, for example the delivery height setpoint. Because if this is set too low, it can lead to undersupply of consumers.
  • the handset or server Upon receipt of the operating configuration or part of the operating configuration, the handset or server compares it to a second operating configuration or part of a second operating configuration, which is the last operating configuration known to the handset or server for the centrifugal pump, in particular the last proper one. It then becomes an indication of change, in particular a manipulation warning on the handset is output if the transmitted operating configuration or the part of the operating configuration does not match the second operating configuration or the part of the second operating configuration.
  • this variant is better suited for the case where a direct communication connection between the hand-held device and the centrifugal pump (FIG. Point-to-point connection). Because when broadcasting as a broadcast signal, the amount of data is limited.
  • the configuration information has the smallest possible volume of data, but nevertheless characterizes the entire operating configuration.
  • This can be achieved by the configuration information being a configuration identifier.
  • a configuration identifier can be, for example, a time stamp or a checksum formed from the operating configuration based on rules. The timestamp may e.g. specify the time of setting or storing the operating configuration.
  • the configuration identifier may be a unique alphanumeric name for the operating configuration that is assigned during configuration. It can easily be created and / or deposited in the centrifugal pump and handset or server, for example when the centrifugal pump is being configured. A checksum does not need to be saved.
  • the definition of the operating configuration can take place directly on the centrifugal pump. Subsequently, this operating configuration or a part of this operating configuration can be transmitted to the handset or the server so that the latter gets aware of the operating configuration. This is then stored there as the last known operating configuration and forms for later the second operating configuration or the part of the second operating configuration.
  • the definition of the operating configuration can be made directly on the centrifugal pump, which then creates a configuration identifier characterizing the operating configuration, stores it and transmits it to the handset or the server, which stores it as the second configuration information.
  • this stores the operating configuration and transmits it to the centrifugal pump, which also stores them and adjusts according to the operating configuration.
  • the handset can also immediately create a configuration identifier characterizing the operating configuration, store it as second configuration information and transmit it to the centrifugal pump, which also stores it.
  • the centrifugal pump in this case receives the configuration identifier from the handset.
  • the centrifugal pump can itself generate and store a configuration identifier during or after the storage of the operating configuration which it has received from the handset, so that the centrifugal pump does not need the configuration identifier from the handset.
  • the handset also needs the configuration identifier.
  • the configuration IDs generated respectively may be different. This problem is not present in the first variant, because the handset not only provides the operating configuration, but also their identifier.
  • the centrifugal pump can in turn transmit the generated configuration identifier to the handset or the server, which stores it as the second configuration information.
  • the handset / server receives the configuration ID from the centrifugal pump and it is ensured that the identifiers are not different.
  • the configuration information can be a checksum, which generates the centrifugal pump from its current operating configuration rule-based, and the second configuration information to be a checksum that generates the handset or the server from the operating configuration stored in it identically rule-based. If the operating configurations are identical, the checksums generated must also be the same.
  • the checksum from the centrifugal pump may be dynamically generated prior to each transmission to the handset or server.
  • the checksum is generated once by the centrifugal pump, for example at the time of its configuration. It is then stored and transferred the stored checksum to the handset or the server, which / which then compares them with the checksum as the second configuration information.
  • This checksum may also be generated by the handheld device or the server dynamically upon receiving the checksum from the centrifugal pump from the last known operating configuration.
  • the checksum can be generated and stored once by the handheld device or server. It is then loaded and compared after receipt of the checksum of the centrifugal pump.
  • the handset may be configured to expect the configuration identifier from a particular centrifugal pump and, in the absence of receiving the configuration identifier, to conclude that the centrifugal pump has a malfunction. It can then output a corresponding notice message.
  • the handset In order for the handset to expect the configuration identifier of the particular centrifugal pump, it must be aware of this centrifugal pump. This can be made possible, for example, by establishing a directed communication connection between the centrifugal pump and the hand-held device, in the context of which hand-held device and pump are quasi-communication partners with known identities. Alternatively, i. in the absence of such a directed connection, the pump identifier may be communicated to the handset, for example manually. Also alternatively, the handset may be adaptive, noting a first-time received pump ID, noting especially upon receipt of multiple pump IDs in the context of these other pump IDs, and assuming the pump ID of the particular centrifugal pump in a next operational test. If this reception then stops, the handset can issue a corresponding message.
  • the prescribed method is preferably carried out by a system comprising at least one electronically controlled centrifugal pump and a hand-held device or a server, wherein the centrifugal pump and the hand-held device or the Centrifugal pump and the server to execute the procedure are set up accordingly.
  • the invention also proposes a computer program, hereinafter also referred to as a software application, which can be loaded onto the handheld device and operated there, and which includes commands that, when executed on the handset, cause the handset to perform those method steps provided in the method of the invention are to be executed by the handset.
  • a computer program hereinafter also referred to as a software application
  • a computer program for monitoring an electronically controlled centrifugal pump of a hydraulic system comprising commands which cause the handset to execute the program when the program is executed by the centrifugal pump a later, second time to receive at least one their current operating configuration characteristic configuration information and compare with a second configuration information that identifies the last known to the handset operating configuration, and output a change notice if the transmitted configuration information does not match the second configuration information.
  • the computer program can be stored on a computer-readable storage medium, preferably on a portable data storage. Preferably, it is provided for download to the handset via a local or global network such as the Internet from a remote server on that server, particularly as part of a bid.
  • a local or global network such as the Internet from a remote server on that server, particularly as part of a bid.
  • the invention further relates to a centrifugal pump which is adapted to carry out the method according to the invention. This applies at least to the extent that the centrifugal pump contributes to the entirety of the method as described above. In this case, the centrifugal pump is set up to carry out those method steps which are provided in the context of the method according to the invention, to be performed by the centrifugal pump.
  • Fig. 1 shows electronically controlled, individually configurable centrifugal pumps 5a to 5f a hydraulic system 1 in a room 2, which are monitored by a user 3, for example in the form of a maintenance technician by means of a mobile handset 4 on site.
  • the centrifugal pumps 5a -5f consist of a pump unit for delivering a liquid, a variable speed electric motor and electronics that controls and / or regulates the electric motor.
  • the centrifugal pumps 5a-5f together with the handset 4 form a system.
  • the hydraulic system may be, for example, a heating system, a cooling system or a drinking water supply system.
  • the handset is here a mobile phone on which runs a software application for the maintenance of centrifugal pumps, in particular for their status verification. Also can be done via this application, a configuration of the pumps 5a-5f.
  • centrifugal pumps with the reference numerals 5a to 5e for the user are relatively well visible and easily accessible, the centrifugal pump with the reference numeral 5f is slightly off, also increased and difficult to access or arranged difficult to see, so that an examination of the operating configuration difficult is possible.
  • the centrifugal pumps 5a-5f can, as in the Fig. 1 shown, have a display for displaying pump data. However, all, single or even a single centrifugal pump, such as the centrifugal pump 5f may also be formed without a display or without an operator interface (HMI). Because the configuration of the centrifugal pumps can be done via the handset.
  • HMI operator interface
  • Each of the centrifugal pumps 5a-5f is configured to send out at least configuration information using short-range communication technology.
  • the configuration information indicates the current operating configuration of the centrifugal pump 5a-5f.
  • the configuration information may be the value of an adjustable operating parameter or an operating setting, or a configuration identifier.
  • the configuration information is used in the handheld device to check if anything has changed in the configuration of the pump.
  • FIGS. 2 to 10 provide purely exemplary scenarios for the inventive method, but they do not limit the applicability of the method.
  • numerous other scenarios are possible and conceivable, which are not shown in the figures.
  • combinations of the scenarios shown in the figures are possible, as far as and to the extent that the scenarios are not mutually exclusive.
  • the Figures 2-4 relate in each case to the case that the configuration of the centrifugal pump takes place on the centrifugal pump itself, wherein the setting of operating parameters and / or the making of operating settings by means of controls on the centrifugal pump.
  • the operating settings can be visualized by a display element, for example a display.
  • the controls and the display element together form a human-machine interface (HMI, Human Machine Interface).
  • HMI Human Machine Interface
  • Fig. 2 illustrated first scenario provides that the configuration identifier is generated by the centrifugal pump.
  • the operating configuration of the centrifugal pump is performed by setting operating parameters and / or making operational settings.
  • the centrifugal pump creates a configuration identifier and also stores it, step S22. This happens at a first time.
  • the configuration identifier identifies the operating configuration.
  • this configuration identifier is transmitted to the handset 4, step S32.
  • the handset 4 receives and stores the configuration identifier, step S42, to have it available at a later time.
  • the configuration identifier can be a time stamp which indicates the time of the configuration, in particular of its storage, a check stage formed from the operating configuration based on rules or else an arbitrary name or string.
  • the steps S12, S22, S32, S42 can be carried out, for example, during a first startup of the centrifugal pump and are thus assigned to the named first time. Now it passes a period of time, which is represented by the dashed arrow and the cloud and which includes the time until the next review of the centrifugal pump. It is assumed that this check now takes place at a second time.
  • step S52 The check begins in step S52 with the handset 4 polling the current configuration identifier of the centrifugal pump.
  • the centrifugal pump transmits the configuration identifier last stored by it, S62. This occurs at a second time later than the first time. If the operating configuration of the centrifugal pump has not been changed in the meantime, this configuration identifier corresponds to the configuration identifier now stored in step S22. However, if the operating configuration of the centrifugal pump has been changed in the meantime, the configuration identifier deviates from the configuration identifier stored at that time in step S22.
  • the handset 4 now receives the current configuration identifier of the centrifugal pump, step S72, and calls the stored in the handset 4 configuration identifier, step S82.
  • step S92 The check now follows in step S92 as to whether the current configuration identifier transmitted by the centrifugal pump coincides with the configuration identifier stored in the handheld device 4. If this is the case, the method is completed, step S 102, since no abnormality was detected. However, if the check indicates that there is no match of the configuration IDs, a change notice 7 is issued on the handset 4, step S112. The person skilled in the art thus receives the indication that the configuration of the pump has been changed since the last known operating configuration known to him. He can thus make a review of the centrifugal pump and correct the operating configuration, if necessary. He can thus recognize any manipulation.
  • the steps S52, S62, S72, S82 and S92 may, for example, be carried out during a first or each further maintenance or operational test of the centrifugal pump and are therefore associated with said second time.
  • the second scenario shown extends the first scenario in that the storage of the configuration identifier created by the centrifugal pump at the first time takes place in a first handset A, but the centrifugal pump is checked with a second handset B.
  • a comparison is therefore provided between the first and the second handset, step S53.
  • the configuration identifier is transmitted from the first handset A to the second handset B and stored there.
  • the first and second handheld devices may belong to different service technicians of the same maintenance company. The synchronization of the two handsets ensures that a change of the operating configuration of the centrifugal pump made by one service technician on the handset of the other Maintenance technician is not noticed by issuing a change note 7, that is displayed as improperly.
  • step S63 the query of the current configuration identifier of the centrifugal pump by the first handset A or the second handset B take place, step S63.
  • the further method steps S62, S72, S82, S92 are identical to the first scenario, in which case the one which was used to query the centrifugal pump in step S63 takes the place of the hand-held device.
  • the handset knows from which pump the configuration identifier originates, either because the handset is intended to monitor only a single centrifugal pump, or because there is a hand-held or centrifugal pump directed communication connection (point-to-point) connection is established, in the context of which the communication participants have already exchanged their identifiers and know who the respective communication partner is.
  • the centrifugal pump repeatedly transmits the configuration identifier as broadcast signals and the handset receives these broadcast signals without passing an active connection to the centrifugal pump, only in a listening operation. Since the emission of a configuration identifier from a plurality of pump units can take place simultaneously, it is necessary for the centrifugal pump to also transmit a pump identifier identifying it, which can likewise be repeated as a broadcast signal, preferably together with the configuration identifier.
  • steps S12 and S22 do not differ from the steps in the first and second scenarios.
  • step S34 in the third scenario adds that the centrifugal pump not only transmits its configuration ID to the handset, but also its pump ID.
  • step S44 in the third scenario it is added that the storage of the configuration identifier in the handset takes place under the pump identifier.
  • step S54 which are received by the handset in a listening operation
  • Step S74 which then calls the configuration identifier stored therein under the received pump identifier, step S84, and compares it with the received configuration identifier, step S94.
  • the possible results of this test are identical to the first and second scenarios. If there is a match, the process is finished, step 104. If there is no match, a change note 7 is displayed on the handset 4, step S114.
  • the third scenario is performed analogously to the second scenario with more than one handset, i. a synchronization between two or more handsets can take place.
  • a corresponding further scenario can therefore be formed by the combination of scenarios 2 and 3.
  • Yet another scenario envisages that instead of the automatic repetitive broadcasting of the pump and configuration identifier in step S54 of FIG Fig. 4 the handset 4 performs a query of the centrifugal pump analogously to the steps S52 and S63. This is done by sending a request, in response to which the centrifugal pump then radiates the pump identifier and the configuration identifier as a broadcast signal.
  • This scenario thus differs from scenario 3 only in the trigger for the transmission of the pump and configuration identifier.
  • the scenarios in the Fig. 5 to 10 differ from the previous scenarios in that the configuration of the centrifugal pump by means of running on the handset 4 software application is performed.
  • the configuration identifier is a checksum from the operating configuration. Since this can be created at any time, storage is not required.
  • the preparation is rule-based, whereby the rules are stored both in the centrifugal pump and in the hand-held device.
  • This set of rules can have any structure, either very simple or complex.
  • the handset 4 now queries the current configuration identifier of the centrifugal pump, step S65.
  • the centrifugal pump now determines the checksum from its current operating configuration as a configuration identifier and transmits it following the handset 4, step S75, which also receives it, step - S85.
  • the handset 4 now determined in turn from the stored in him operating configuration, the checksum as a configuration identifier, step S95. Subsequently, the received checksum of the centrifugal pump is compared with the checksum determined by the handset 4, step S105. If they agree, the process is completed, step S115. If there is no match, the output of a change note 7 is made on the handset 4, step S125.
  • step S 75 the centrifugal pump, after having received the operating configuration of the handset 4, could determine and save once. The determination of the checksum referred to in step S 75 can then be omitted or replaced by the loading of the stored checksum from the memory of the centrifugal pump.
  • the handset 4 after determining the operating configuration to determine the checksum once and save.
  • the determination of the checksum referred to in step S 95 can then be omitted or replaced by the loading of the stored checksum from the memory of the handset.
  • both the centrifugal pump and the handset can each time determine and store the checksum, as explained above.
  • the configuration identifier can be formed by a timestamp or any name as an alternative to a checksum.
  • the scenario in Fig. 5 as well as the scenarios explained on the basis assume that the hand-held device 4 knows the centrifugal pump when querying the configuration identifier. This can be the case, for example, in that there is a directed communication connection (point-to-point connection) between the hand-held device and the centrifugal pump, which enables a targeted exchange of data between these devices. Thus, the handset knows from which centrifugal pump the received configuration identifier originated.
  • Fig. 6 takes into account the scenario shown here, wherein the centrifugal pump here uses the emission of a pump identifier for their identification.
  • the scenario is analogous Fig. 5 assuming that a checksum is used as the configuration identifier.
  • the scenario in Fig. 6 begins again with the pre-configuration of the centrifugal pump in the software application of the handset, wherein the fixed operating configuration is stored under a pump identifier of the centrifugal pump in the handset, step S16.
  • the pump identifier may be assigned by the software application, or previously communicated to the handset by the unconfigured centrifugal pump, or alternatively entered manually by an installer.
  • the transmission of the operating configuration and their Storage in the centrifugal pump, step S26 whereby the centrifugal pump also adjusts according to the configuration.
  • the centrifugal pump radiates repeatedly, in particular periodically, its pump identifier and the current configuration identifier which it detects each time as a broadcasting signal, step S66.
  • the handset 4 in listening mode receives the pump ID and the configuration ID, step S76. In turn, it determines the checksum as the configuration identifier from the operating configuration assigned to it in the pump identifier received, step S86. Subsequently, the received checksum of the centrifugal pump is compared with the checksum determined by the handset 4, step S96. If they agree, the process is finished, step S106. If there is no match, the output of a change note 7 on the handset 4, step S116.
  • the special feature of the in Fig. 6 is analogous to the scenario in Fig. 4 the fact that there is no directional communication connection (point-to-point connection) between the hand-held device and the centrifugal pump during the operation test or maintenance. Rather, the radiation of the pump identifier and the configuration identifier is not receiver-specific, ie directed to no particular handset.
  • the broadcasting as a broadcast signal is possible with the short-range communication technology Bluetooth 5.0, more precisely with the Bluetooth Low Energy (BLE) protocol stack defined therein, which is also preferably used.
  • the centrifugal pumps 5a-5f are thus each equipped with a radio module, here in the form of a Bluetooth® radio module.
  • triggering of the radiation of the centrifugal pump can also be the receipt of a query of the handset 4, similar to that in step S65 in FIG Fig. 5 .
  • a query may be upstream of the step S66, wherein in step S66 then the repetition of the radiation is eliminated, since the centrifugal pump, the pump and configuration identifier, preferably once only on receipt of the query radiates.
  • the Radiation may also be repeated two or three times to ensure that the handset also receives the broadcast signals.
  • the query of the configuration identifier by the handset can also be receiver-specific. It is therefore not directed to any particular centrifugal pump.
  • the pump identifier and / or the configuration identifier are transmitted in encrypted form. This is done by the centrifugal pumps 5a-5f and the handset, respectively the software application a common key is known, which is used to encrypt the data.
  • the pump identifier may be any alphanumeric identifier that uniquely identifies the centrifugal pump within the group or even globally, such as a centrifugal pump serial number or an SAP number.
  • the globally unique Bluetooth address of the radio module is used as the pump identifier.
  • another network-technical address e.g. a MAC address can be used here.
  • the centrifugal pump may perform a one-time calculation and storage and then provide it in response to the handset polling.
  • the handset may perform a one-time calculation and storage and then load and use it for comparison with the checksum of the centrifugal pump.
  • both the centrifugal pump and the handset can do so.
  • Fig. 5 described further developments on the scenario in Fig. 6 applicable, in which not both devices, ie both the centrifugal pump and the handset, determine the checksum, but only one of the two devices, in which case this device provides the other device with the checksum.
  • a time stamp or an arbitrary name can then also be used as the configuration identifier.
  • FIG. 7 A scenario in which any configuration identifier between the devices is agreed in the configuration of the centrifugal pump is in Fig. 7 shown.
  • a configuration identifier is determined in addition to the definition of the operating configuration, step S17.
  • This can be a checksum, a timestamp, or any operational configuration name.
  • the operating configuration and the configuration identifier are then stored in the handset 4 and then transmitted to the centrifugal pump, which in turn stores them, step S27.
  • the centrifugal pump adjusts according to the operating configuration.
  • step S 67 the query of the current configuration identifier of the centrifugal pump, step S 67, whereupon the centrifugal pump transmits the last of them stored configuration identifier, step S77.
  • the handset 4 receives the configuration identifier, step S87, and calls the configuration identifier it stores. Subsequently, the received configuration identifier of the centrifugal pump is compared with the configuration identifier stored in the handset 4, step S107. If they agree, the process is completed, step S117. If there is no match, the output of a change note 7 on the handset 4, step S127.
  • centrifugal pump instead of querying the centrifugal pump or instead of the undirected query all centrifugal pump as a trigger for the fact that the centrifugal pump transmits its current configuration identifier, be provided that the centrifugal pump repeatedly radiates the configuration identifier as a broadcast signal. This can also be done by all circulating pumps in the monitoring. Such a scenario is in Fig. 8 shown.
  • Fig. 8 is different from the scenario that is in Fig. 7 is merely that in the place of the query of the current configuration identifier of the centrifugal pump in step S67 and the transmission of the configuration identifier in response thereto in step S77, the radiation of the pump identifier and the current configuration identifier by the centrifugal pump as a broadcast signal. This is done so unprompted, so that the handset must be only in the listening to listen to the broadcast signals, or to receive and evaluate.
  • the handset receives the pump identifier and configuration identifier, step S88, and then calls the configuration identifier stored in it on the basis of the pump identifier also received, step S98.
  • step S88 the handset receives the pump identifier and configuration identifier
  • step S98 the configuration identifier stored in it on the basis of the pump identifier also received.
  • step S108 the process is completed, step S118. If there is no match, the output of a change note 7 on the handset 4, step S128.
  • FIG Fig. 9 An alternative scenario in which the centrifugal pump repeatedly emits its current configuration identifier as a broadcast signal is in FIG Fig. 9 shown.
  • This scenario is especially useful if the configuration identifier is a timestamp, but it can also be a checksum or any name for the operating configuration.
  • the method assumes again that a pre-configuration of the centrifugal pump takes place in the software application of the hand-held device 4.
  • the operating configuration thus determined is stored in the handset, step S19. Subsequently, the transfer of the operating configuration and the storage in the centrifugal pump.
  • a configuration identifier is created by the centrifugal pump, step S29. This configuration identifier is then transmitted to the handset 4, step S39, which receives and stores it, step S49.
  • the centrifugal pump radiates its pump identifier and its current configuration identifier periodically as a broadcast signal, step S59.
  • the handset 4 is placed in a listening mode to receive and evaluate the broadcast signals. This can be done for example by starting the software application on the handset 4.
  • the handset 4 receives the pump identifier and configuration identifier, step S79, calls the stored in the handset 4 configuration identifier based on the pump identifier, step S89, this compares with the received configuration identifier of the centrifugal pump, step S99. If coincident, the process is ended, step S109. If there is no match, a change notice 7 is output in the handset 4, step S119.
  • Bluetooth preferably is used in the scenarios.
  • the transmission of the pump identifier and the configuration identifier as a broadcast signal takes place in a so-called Advertising Channel, which is defined in the Bluetooth Low Energy (BLE) protocol stack of the Bluetooth 5.0 standard.
  • BLE Bluetooth Low Energy
  • the pump identifier may be the serial number of the centrifugal pump, alternatively the bluetooth address of the bluetooth radio module or any other communication address such as e.g. be a MAC address.
  • the handsets 4 During on-site use, the handsets 4 have no internet connection, but after use a synchronization of the handsets via an Internet connection.
  • a configuration identifier in the form of a time stamp is used, which is generated by the pump.
  • the ZLE is constantly transmitted as a broadcast signal, eg via the Bluetooth Advertising Channel.
  • All ZLE are collected by the software application of the handset of the respective employee A, B, C of the company X, when he is on site, and uploaded to a central server with an existing internet connection.
  • the personally applicable data for the employee (see “A-Part” explained below) will be compared with a global part and, if new, taken over into the global part.
  • ZLE are also transferred from the server to the employees' handsets ("synchronization of server and handheld devices"). This will collect the information that various employees of a company collect merged.
  • An example of a list held on the handset of employee A is in Fig. 11 shown.
  • the software application can group these events into one event, for example by defining that there can only be 1 visit per day. It is also possible to use GPS to recognize that the employee is away from the place.
  • FIG. 1 A flowchart of a scenario in synchronization with a server is shown in FIG.
  • the technical prerequisite is that the pump repeatedly sends the ZLE or similar and that the employees always carry a handheld device with an activated software application.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Testing And Monitoring For Control Systems (AREA)
  • Control Of Non-Positive-Displacement Pumps (AREA)
EP17001850.1A 2017-11-13 2017-11-13 Procédé de surveillance d'une pompe centrifuge à régulation électronique Active EP3483449B1 (fr)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102022128739A1 (de) 2022-10-28 2024-05-08 KSB SE & Co. KGaA Verfahren zur drahtlosen Registrierung einer Pumpe mit einer Pumpensteuerung bei einer zentralen Verwaltungseinheit unter Verwendung einer mobilen Kommunikationsvorrichtung

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US20070154322A1 (en) * 2004-08-26 2007-07-05 Stiles Robert W Jr Pumping system with two way communication
US20170175746A1 (en) * 2015-12-17 2017-06-22 Wayne/Scott Fetzer Company Integrated sump pump controller with status notifications
US20170211285A1 (en) * 2016-01-22 2017-07-27 Hayward Industries, Inc. Systems and Methods for Providing Network Connectivity and Remote Monitoring, Optimization, and Control of Pool/Spa Equipment

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US10356085B2 (en) * 2015-05-01 2019-07-16 Graco Minnesota Inc. Remote pump monitoring and control
EP4365453A2 (fr) * 2016-12-30 2024-05-08 Grundfos Holding A/S Procédé de fonctionnement d'un groupe motopompe à commande électronique

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Publication number Priority date Publication date Assignee Title
US20070154322A1 (en) * 2004-08-26 2007-07-05 Stiles Robert W Jr Pumping system with two way communication
US20170175746A1 (en) * 2015-12-17 2017-06-22 Wayne/Scott Fetzer Company Integrated sump pump controller with status notifications
US20170211285A1 (en) * 2016-01-22 2017-07-27 Hayward Industries, Inc. Systems and Methods for Providing Network Connectivity and Remote Monitoring, Optimization, and Control of Pool/Spa Equipment

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102022128739A1 (de) 2022-10-28 2024-05-08 KSB SE & Co. KGaA Verfahren zur drahtlosen Registrierung einer Pumpe mit einer Pumpensteuerung bei einer zentralen Verwaltungseinheit unter Verwendung einer mobilen Kommunikationsvorrichtung

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