CN111616656A

CN111616656A - Method and device for generating fault prompt information and storage medium

Info

Publication number: CN111616656A
Application number: CN202010479994.5A
Authority: CN
Inventors: 王晓东; 徐浩
Original assignee: Shanghai Minglue Artificial Intelligence Group Co Ltd
Current assignee: Shanghai Minglue Artificial Intelligence Group Co Ltd
Priority date: 2020-05-29
Filing date: 2020-05-29
Publication date: 2020-09-04
Anticipated expiration: 2040-05-29
Also published as: CN111616656B

Abstract

The invention discloses a method and a device for generating fault prompt information and a storage medium. Wherein, the method comprises the following steps: detecting an electric signal generated on a coil loop in target equipment, wherein the coil loop is provided with an electromagnetic valve and a relay, the relay is used for controlling the opening and closing of the electromagnetic valve, and the electromagnetic valve is used for controlling the on-off of a water path of the target equipment; under the condition that a first electric signal generated on a mutual inductor loop is detected, determining that target equipment is in a first fault state; under the conditions that a second electric signal generated on the coil loop is detected to meet a first preset condition and a control instruction for controlling the electromagnetic valve to open and close is detected to meet a second preset condition, determining that the target equipment is in a second fault state; and generating fault prompt information according to the first fault state and/or the second fault state. The invention solves the technical problem that the fault prompt information is not generated timely.

Description

Method and device for generating fault prompt information and storage medium

Technical Field

The invention relates to the field of computers, in particular to a method and a device for generating fault prompt information and a storage medium.

Background

At present, commercial dish washers are widely installed and used in places such as chain restaurants, commercial kitchens and the like. Commercial dishwashers play an important role in quickly washing used dishes and quickly providing clean dishes during the peak of a restaurant. The reliability of commercial dishwashers is therefore of great importance to the user. In actual use, when the dishwasher fails due to changes of power supply and water supply environments, after-sale maintenance can be carried out only through a telephone or a network platform, and a lot of time is consumed for after-sale engineers to get on the door and find out the failure reason. When the fault occurs at the peak of a meal, great pressure is exerted on the kitchen when the kitchen is washed out. Therefore, the fault diagnosis and the fault early warning are added into the logic judgment inside the dish washing machine, the actual running state data of the dish washing machine is recorded, the possible fault hidden danger is early warned, the problem point of the possible fault is concerned when the dish washing machine is daily maintained after sale, the fault is killed in the germination period, and the phenomenon that the kitchen accident of a merchant caused by the fault of the dish washing machine occurs in the dining peak period to influence the experience efficiency and the quality of the merchant is avoided. Meanwhile, the electromagnetic valve is used as the first pass of water inlet of the dish washing machine, the quality of the water source is different, and the water inlet is possibly tap water, well water or high-temperature water and the like. The electromagnetic valve is positioned below or behind the dish washer, so that once the electromagnetic valve breaks down, the maintenance and replacement difficulty is high, and the time for field maintenance is long. Meanwhile, the electromagnetic valve is difficult to carry out field inspection in daily maintenance, the fault is not obvious, and the electromagnetic valve has concealment. Therefore, there is a problem that the generation of the failure indication information is not timely.

In view of the above problems, no effective solution has been proposed.

Disclosure of Invention

The embodiment of the invention provides a method and a device for generating fault prompt information and a storage medium, which are used for at least solving the technical problem that the fault prompt information is not generated timely.

According to an aspect of the embodiments of the present invention, a method for generating fault notification information is provided, including: the detection unit is used for detecting an electric signal generated on a coil loop in target equipment, wherein the coil loop is provided with an electromagnetic valve and a relay, the relay is used for controlling the opening and closing of the electromagnetic valve, and the electromagnetic valve is used for controlling the opening and closing of a water path of the target equipment; a first determining unit, configured to determine that the target device is in a first fault state when a first electrical signal generated on a mutual inductor loop is detected, where the mutual inductor loop is used to detect a leakage current generated on the coil loop; a second determining unit, configured to determine that the target device is in a second fault state when it is detected that a second electrical signal generated on the coil loop satisfies a first preset condition and a control instruction for controlling the electromagnetic valve to open and close satisfies a second preset condition; and a generating unit, configured to generate fault notification information according to the first fault state and/or the second fault state, where the fault notification information is used to display that the target device is in a fault.

As an alternative embodiment, the determining that the target device is in the first fault state when the first electrical signal generated on the mutual coil loop is detected includes: and determining that the coil loop is in a leakage state under the condition that the obtained zero sequence current value generated on the mutual inductance coil loop is greater than 0.

As an optional implementation manner, in the case that it is detected that the second electric signal generated on the coil loop satisfies a first preset condition and that a control command for controlling the solenoid valve to open and close satisfies a second preset condition, the determining that the target device is in a second fault state includes: under the condition that the working current value generated on the coil loop is detected to be larger than 0 and the control command is invalid, determining that the relay is in a contact adhesion state; determining that the target device is in a third fault state under the condition that the working current value generated on the coil loop is greater than 0 and the effective duration of the control instruction is greater than or equal to a first preset duration; and determining that the coil loop is in an open circuit state under the condition that the obtained working current value generated on the coil loop is 0 and the duration of the invalid control command is greater than or equal to a second preset duration.

As an optional implementation manner, after the determining that the target device is in the third failure state, the method further includes: and determining that the electromagnetic valve is in a fourth fault state under the condition that the working current value is greater than a first preset current value, wherein the first preset current value is greater than 0.

As an alternative embodiment, after the determining that the electromagnetic valve is in the fourth failure state, the method includes: determining that the solenoid valve is in a partially open state when the working current value is greater than the first preset current value and less than a second preset current value, wherein the partially open state is a state in which the second preset current value is greater than the first preset current value, and the partially open state is used for indicating that the solenoid valve is not completely opened; and determining that the electromagnetic valve is in a fully closed state when the working current value is larger than or equal to the second preset current value, wherein the fully closed state is used for indicating that the electromagnetic valve is not opened.

As an alternative embodiment, after the determining that the coil loop is in the first fault state, the method includes: acquiring an alarm instruction; and controlling the target equipment to be in a stop operation state according to the instruction of the alarm instruction, wherein the stop operation state is used for indicating that the target equipment stops detecting the electric signal generated on the coil loop.

As an optional implementation manner, after the controlling the target device to be in the stop operation state, the method includes: acquiring a reset instruction; and controlling the target equipment in the operation stop state to be in an operation state according to the instruction of the reset instruction, wherein the operation state is used for indicating that the target equipment starts to detect the electric signal generated on the coil loop.

According to another aspect of the embodiments of the present invention, there is also provided a device for generating fault notification information, including: the acquisition unit is used for acquiring a group of false touch signals generated on the target touch screen; a processing unit, configured to perform adjustment and determination processing on a first detection area according to a position relationship between a touch position corresponding to the set of erroneous touch signals and an area edge of the first detection area to obtain an adjustment and determination result, where the first detection area is a detection area on the target touch screen and is used to identify an erroneous touch signal generated on the target touch screen; an adjusting unit, configured to adjust a size and/or a position of the first detection region when the adjustment determination result indicates that the first detection region is adjusted;

as an optional implementation, the first determining unit includes: and the first determining module is used for determining that the coil loop is in a leakage state under the condition that the obtained zero-sequence current value generated on the mutual inductance coil loop is greater than 0.

As an optional implementation, the second determining unit includes: the second determining module is used for determining that the relay is in a contact adhesion state under the condition that the working current value generated on the coil loop is detected to be larger than 0 and the control instruction is invalid; a third determining module, configured to determine that the target device is in a third fault state when it is obtained that the working current value generated on the coil loop is greater than 0 and a duration for which the control instruction is valid is greater than or equal to a first preset duration; and the fourth determining module is used for determining that the coil loop is in an open circuit state under the condition that the obtained working current value generated on the coil loop is 0 and the duration of the invalid control instruction is greater than or equal to a second preset duration.

As an optional implementation, the method further includes: and a fifth determining module, configured to determine that the electromagnetic valve is in a fourth fault state when the working current value is greater than a first preset current value after the target device is determined to be in the third fault state, where the first preset current value is greater than 0.

As an alternative embodiment, the method comprises the following steps: a sixth determining module, configured to determine that the solenoid valve is in a partially open state after the determination that the solenoid valve is in the fourth fault state and when the working current value is greater than the first preset current value and smaller than a second preset current value, where the partially open state is a state where the second preset current value is greater than the first preset current value and the partially open state is used to indicate that the solenoid valve is not fully open; and a seventh determining module, configured to determine that the electromagnetic valve is in a fully closed state after the electromagnetic valve is determined to be in the fourth failure state and when the operating current value is greater than or equal to the second preset current value, where the fully closed state is used to indicate that the electromagnetic valve is not opened.

As an alternative embodiment, the method comprises the following steps: a first obtaining unit, configured to obtain an alarm instruction after the coil loop is determined to be in the first fault state; and a first control unit configured to control the target device to be in a shutdown state according to an instruction of the alarm instruction after the coil circuit is determined to be in the first failure state, where the shutdown state indicates that the target device stops detecting the electric signal generated in the coil circuit.

As an alternative embodiment, the method comprises the following steps: a second obtaining unit, configured to obtain a reset instruction after the target device is controlled to be in a stop operation state; and a second control unit, configured to control the target device in the stopped state to be in an operating state according to an instruction of a reset instruction after the target device is controlled to be in the stopped state, where the operating state is used to indicate that the target device starts to detect an electrical signal generated on the coil loop.

According to another aspect of the embodiments of the present invention, there is also provided a computer-readable storage medium, in which a computer program is stored, where the computer program is configured to execute the method for generating the fault indication information when running.

According to another aspect of the embodiments of the present invention, there is also provided an electronic apparatus, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the method for generating the fault notification information through the computer program.

In the embodiment of the invention, an electric signal generated on a coil loop in target equipment is detected, wherein the coil loop is provided with an electromagnetic valve and a relay, the relay is used for controlling the opening and closing of the electromagnetic valve, and the electromagnetic valve is used for controlling the opening and closing of a water path of the target equipment; determining that the target device is in a first fault state under the condition that a first electric signal generated on a mutual inductor loop is detected, wherein the mutual inductor loop is used for detecting leakage current generated on the coil loop; determining that the target device is in a second fault state when it is detected that a second electric signal generated on the coil loop meets a first preset condition and a control instruction for controlling the electromagnetic valve to open and close meets a second preset condition; and generating fault prompt information according to the first fault state and/or the second fault state, wherein the fault prompt information is used for displaying that the target equipment is in a fault, judging that the equipment generates corresponding fault information through leakage current, working current and a relay control instruction, generating related fault prompt information, and utilizing a multi-dimensional fault judgment basis to achieve the technical purpose of timely generating the corresponding fault prompt information when the fault occurs, thereby realizing the technical effect of improving the timeliness of generating the fault information and further solving the technical problem that the fault prompt information is not timely generated.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention without limiting the invention. In the drawings:

fig. 1 is a schematic diagram of an application environment of an alternative method for generating fault notification information according to an embodiment of the present invention;

fig. 2 is a schematic diagram of a flowchart of an alternative method for generating fault indication information according to an embodiment of the present invention;

fig. 3 is a schematic diagram of an alternative method for generating fault notification information according to an embodiment of the present invention;

FIG. 4 is a schematic diagram of an alternative method for generating fault notification information according to an embodiment of the invention;

FIG. 5 is a schematic diagram of a flow chart of an alternative method for generating fault indication information according to an embodiment of the invention;

FIG. 6 is a schematic diagram of a flow chart of an alternative method for generating fault indication information according to an embodiment of the invention;

FIG. 7 is a schematic diagram of a flow chart of an alternative method for generating fault indication information according to an embodiment of the invention;

FIG. 8 is a schematic diagram of an alternative apparatus for generating fault notification information according to an embodiment of the present invention;

FIG. 9 is a schematic diagram of an alternative fault notification message generation apparatus according to an embodiment of the present invention;

FIG. 10 is a schematic diagram of an alternative fault notification message generation apparatus according to an embodiment of the present invention;

fig. 11 is a schematic structural diagram of an alternative electronic device according to an embodiment of the invention.

Detailed Description

In order to make the technical solutions of the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

According to an aspect of the embodiment of the present invention, a method for generating fault notification information is provided, and optionally, as an optional implementation manner, the method for generating fault notification information may be, but is not limited to be, applied to an environment as shown in fig. 1. The system may include, but is not limited to, a user device 102, a network 110, and a server 112, wherein the user device 102 may include, but is not limited to, a display 108, a processor 106, and a memory 104, wherein the user device 102 includes a coil loop 1022, a relay 1026 and a solenoid valve 1028 disposed on the coil loop 1022, and a mutual coil loop 1024 surrounding the coil loop 1022.

The specific process comprises the following steps: step S102, the user equipment 102 obtains the working current detected on the coil loop 1022, the leakage current detected on the mutual inductor loop 1024, and a control instruction sent by the relay 1026 for controlling the opening and closing of the electromagnetic valve 1028, processes the working current into a second electrical signal by the processor, and processes the leakage current into a first electrical signal;

step S104-S106, the user device 102 sends the first electric signal, the second electric signal and the control instruction to the server 112 through the network 110;

step S108, the server 112 searches for the first electrical signal, the second electrical signal and the fault state corresponding to the control instruction through the database 114, and further determines the fault state of the target device;

step S110, processing the determined fault state by the processing engine 116, so as to generate fault indication information;

in steps S112-S114, the server 112 sends the failure prompt message to the user equipment 102 through the network 110, and the processor 106 in the user equipment 102 displays that the target equipment is in failure on the display 108 according to the failure prompt message.

Optionally, as an optional implementation manner, as shown in fig. 2, the method for generating the fault notification information includes:

s202, detecting an electric signal generated on a coil loop in target equipment, wherein the coil loop is provided with an electromagnetic valve and a relay, the relay is used for controlling the opening and closing of the electromagnetic valve, and the electromagnetic valve is used for controlling the on-off of a water path of the target equipment;

s204, determining that the target equipment is in a first fault state under the condition that a first electric signal generated on a mutual inductance loop is detected, wherein the mutual inductance loop is used for detecting leakage current generated on a coil loop;

s206, under the condition that a second electric signal generated on the coil loop is detected to meet a first preset condition and a control instruction for controlling the electromagnetic valve to open and close is detected to meet a second preset condition, determining that the target equipment is in a second fault state;

and S208, generating fault prompt information according to the first fault state and/or the second fault state, wherein the fault prompt information is used for displaying that the target equipment is in fault.

Optionally, in this embodiment, the method for generating the fault notification information may be but not limited to be applied to generating the corresponding fault notification information for the relevant fault of the electromagnetic valve of the relevant device with the water inlet and outlet function. The target device may be, but is not limited to, an associated device with water inlet and outlet functions, such as a dishwasher, a washing machine, a water pump, and the like. The electromagnetic valve can be but not limited to a device which utilizes the electromagnetic effect and controls the water supply and water cut-off of the water circuit valve through power on and power off, and specifically, the iron core connected with the valve plug is driven to move by a magnetic field generated after the selectable electromagnetic coil is powered on, so that the valve plug is separated from the plugging position, and water in the valve can smoothly pass through the device. The relay can be but not limited to a device which utilizes an electromagnetic effect and controls the on and off of a switch through power on and off, specifically, the electromagnetic coil is selectively electrified, an iron core in the center of the coil moves under the action of a magnetic field generated by the coil to drive a switch contact inside the relay to be turned on from off, and after the electrification disappears, the contact is turned off again under the action of an internal reset spring. The detection of the electrical signal generated on the coil loop in the target device may be, but is not limited to, acquiring and collecting the signal generated on the circuit through a signal acquisition circuit; further optionally, the signal gain adjusting circuit may adjust the voltage or current of the collected signal to make the maximum value and the minimum value both in the voltage or current range that the main control board chip can process, so as to prevent signal distortion, where the gain may refer to, but is not limited to, the ratio of the output voltage or output current to the input voltage or input current after the signal passes through the unit; further alternatively, the circuit may be, but is not limited to, a circuit that filters the signal entering the unit through a filter circuit to remove various unwanted noise signals and retain the signal of actual interest.

The method includes the steps that an electric signal generated on a coil loop in target equipment is detected, wherein an electromagnetic valve and a relay are arranged on the coil loop, the relay is used for controlling the opening and closing of the electromagnetic valve, and the electromagnetic valve is used for controlling the on-off of a water path of the target equipment; under the condition that a first electric signal generated on a mutual inductance loop is detected, determining that target equipment is in a first fault state, wherein the mutual inductance loop is used for detecting leakage current generated on a coil loop; under the conditions that a second electric signal generated on the coil loop is detected to meet a first preset condition and a control instruction for controlling the electromagnetic valve to open and close is detected to meet a second preset condition, determining that the target equipment is in a second fault state; and generating fault prompt information according to the first fault state and/or the second fault state, wherein the fault prompt information is used for displaying that the target equipment is in fault. Alternatively, the first electrical signal may be, but is not limited to, obtained by detecting through a zero sequence transformer, where the zero sequence transformer may be, but is not limited to, a mutual inductor loop that is crossed by a pair of live and neutral wires of a coil loop to be detected, or a round-trip circuit including a pair of current flowing directions. The detection principle of the first electrical signal may be, but is not limited to: because the coil loop currents are equal in magnitude and opposite in direction in the mutual inductor loop, the generated magnetic field should be 0, and the induced current in the transformer is also zero, in other words, under the condition that no leakage occurs in the coil loop to be detected, the detected current value of the mutual inductor loop (zero sequence transformer) should be 0.

Further by way of example, as shown in fig. 3, the electromagnetic induction coil comprises a main control board 302, a coil loop 304 in the main control board 302, and a solenoid valve 310, a relay 312, a zero-sequence current transformer 314, and an operating current transformer 316 on the coil loop 304, wherein the coil loop 304 comprises a zero line 306 and a live line 308, and the zero line 306 and the live line 308 pass through a mutual inductor loop in which the zero-sequence current transformer 314 is located. Optionally, the working principle of the relay 312 may be, but is not limited to, controlling whether the solenoid valve 310 works, for example, the relay 312 includes a normally open contact, and when the normally open contact of the relay 312 is attracted, the coil loop 304 where the solenoid valve 310 is located has current flowing through, and the solenoid valve 310 is powered on and opened, so that water can flow through the solenoid valve 310; when the normally open contact of the relay 312 is opened, the current of the coil loop 304 in which the solenoid valve 310 is located is cut off. The solenoid valve 310 is de-energized and closed, and the water flow is also cut off by the solenoid valve 310 and cannot pass through. Optionally, the working principle of the transformers (e.g. the zero sequence current transformer 314, the working current transformer 316, etc.) may be, but is not limited to: assuming that A, B conductors exist and A, B conductors are coils wound around each other or B coils are wound around a conductor, then according to the principle of electromagnetic induction, a magnetic field is generated around the conductor a by the change of current in the conductor a, and the corresponding change of current is generated by the conductor B in the magnetic field of the conductor a, and the current value in the conductor a can be inversely calculated through the current value in the conductor B. Optionally, the working principle of the working current transformer 316 may be, but is not limited to, to collect the working current on the live line 308 of the coil loop 304 where the solenoid valve 310 is located, and to send the induced current to the signal collecting circuit.

For example, as shown in fig. 3, the zero sequence current transformer 314 and the working current transformer 316 disposed on the coil loop 304 in the main control board 302 detect electrical signals, and in combination with a control signal of the relay 312 for controlling the opening and closing of the electromagnetic valve 310, determine a fault state of the target device corresponding to the main control board 302.

For further example, as shown in fig. 4, optionally, the main control board 302 further includes a signal acquisition circuit 402, a signal gain adjustment circuit 404, a filter circuit 406, and a main control chip 408, and optionally, the signal acquisition circuit 402 converts current signals acquired by the two transformers (the zero sequence current transformer 314 and the working current transformer 316) into voltage signals, and sends the voltage signals to the signal gain adjustment circuit 404 to convert the voltage amplitude of the signals, so that the maximum voltage signal is not greater than the input range of the main control chip, for example, 3.3V or 5V; in addition, the filter circuit 406 pre-filters the voltage signal to be input into the main control chip 408 to prevent other unnecessary signals from entering the main control chip and affecting the data accuracy.

According to the embodiment provided by the application, an electric signal generated on a coil loop in target equipment is detected, wherein an electromagnetic valve and a relay are arranged on the coil loop, the relay is used for controlling the opening and closing of the electromagnetic valve, and the electromagnetic valve is used for controlling the on-off of a water path of the target equipment; under the condition that a first electric signal generated on a mutual inductance loop is detected, determining that target equipment is in a first fault state, wherein the mutual inductance loop is used for detecting leakage current generated on a coil loop; under the conditions that a second electric signal generated on the coil loop is detected to meet a first preset condition and a control instruction for controlling the electromagnetic valve to open and close is detected to meet a second preset condition, determining that the target equipment is in a second fault state; and generating fault prompt information according to the first fault state and/or the second fault state, wherein the fault prompt information is used for displaying that the target equipment is in a fault, judging that the equipment generates corresponding fault information through leakage current, working current and a relay control instruction, generating related fault prompt information, and utilizing a multi-dimensional fault judgment basis, so that the technical purpose of generating the corresponding fault prompt information in time when the fault occurs is achieved, and the technical effect of improving the generation timeliness of the fault information is realized.

Alternatively, determining that the target device is in the first fault state upon detection of the first electrical signal generated on the mutual coil loop comprises:

and determining that the coil loop is in a leakage state under the condition that the obtained zero sequence current value generated on the mutual inductance coil loop is greater than 0.

It should be noted that, when the zero sequence current value generated on the mutual inductor loop is obtained to be greater than 0, it is determined that the coil loop is in a leakage state.

For further example, optionally, for example, as shown in fig. 3, the zero-sequence current transformer 314 collects a zero-sequence current value of the whole coil loop 304 where the electromagnetic valve 310 is located, and when the zero-sequence current occurs, it is determined that the coil loop 304 where the electromagnetic valve 310 is located is in an electric leakage state, where it is to be noted that, because the electromagnetic valve frequently contacts with water in the equipment, once the electromagnetic valve fails or the housing is damaged, the probability of the electric leakage risk is higher than that of other components in the equipment. Therefore, whether the electromagnetic valve fault occurs or not is positioned by detecting whether the electromagnetic valve loop generates electric leakage or not, and the efficiency of fault detection can be improved. .

According to the embodiment provided by the application, under the condition that the zero sequence current value generated on the mutual inductance coil loop is larger than 0, the coil loop is determined to be in the electric leakage state, and the purpose of determining whether the electromagnetic valve fails or not by detecting whether the electromagnetic valve loop generates electric leakage or not is achieved, so that the effect of improving the failure detection efficiency of the electromagnetic valve is achieved.

As an alternative, in a case where it is detected that the second electric signal generated on the coil loop satisfies the first preset condition and it is detected that the control instruction for controlling the solenoid valve to open and close satisfies the second preset condition, determining that the target device is in the second fault state includes:

s1, determining that the relay is in a contact adhesion state under the condition that the working current value generated on the coil loop is detected to be larger than 0 and the control instruction is invalid;

s2, determining that the target equipment is in a third fault state under the conditions that the obtained working current value generated on the coil loop is greater than 0 and the effective duration of the control instruction is greater than or equal to a first preset duration;

and S3, determining that the coil loop is in an open circuit state under the condition that the obtained working current value generated on the coil loop is 0 and the duration of the invalid control command is greater than or equal to a second preset duration.

Optionally, the relay may be, but not limited to, an electric appliance which, during electric control, generates a predetermined step change in the controlled quantity in the electric output circuit when the change of the output quantity meets a specified requirement, and has an interaction relationship between the control system and the controlled system, wherein the contact of the relay may be, but not limited to, a normally open state and a normally closed state, and the contact adhesion may be, but not limited to, an abnormal state of operation of the contact of the relay. Optionally, the control instruction invalidation may be, but is not limited to, that a valid control instruction is not obtained, or that an invalid control instruction is obtained, and the control instruction invalidation may be, but is not limited to, that a valid control instruction is obtained.

It should be noted that, when it is detected that the working current value generated on the coil loop is greater than 0 and the control instruction is invalid, it is determined that the relay is in the contact adhesion state; determining that the target equipment is in a third fault state under the conditions that the working current value generated on the coil loop is greater than 0 and the effective duration of the control instruction is greater than or equal to a first preset duration; and determining that the coil loop is in an open circuit state under the conditions that the obtained working current value generated on the coil loop is 0 and the duration of invalid control instructions is greater than or equal to a second preset duration.

For further example, as shown in fig. 5, the following steps may be optionally performed:

step S502, acquiring a working current value and a control instruction, wherein the working current value is a current value detected on a coil loop where an electromagnetic valve and a relay in target equipment are located;

step S504, determining whether the working current value is greater than 0, if yes, allowing to execute step S514 and step S516, and if not, allowing to execute step S512;

step S506, determining whether the control command is valid, if yes, performing step S510 and allowed to perform step S516, otherwise, performing step S508 and allowed to perform steps S512 and S514;

step S508, determining the invalid time length of the control instruction, and allowing the step S512 to be executed under the condition that the invalid time length of the control instruction is greater than or equal to a first preset time length;

step S510, determining the effective duration of the control instruction, and allowing the step S516 to be executed under the condition that the ineffective duration of the control instruction is greater than or equal to a second preset duration;

executing step S512 under the conditions that the working current value is not more than 0, the control instruction is invalid and the control instruction invalid time length is not less than a first preset time length at the same time, and determining that the coil loop is in an open circuit state;

executing step S514 under the conditions that the working current value is not more than 0 and the control instruction is invalid, and determining that the relay is in a contact adhesion state;

and executing the step S516 to determine that the target device is in a third fault state under the conditions that the working current value is greater than 0, the control instruction is effective and the control instruction effective duration is greater than or equal to the first preset duration.

According to the embodiment provided by the application, the relay is determined to be in a contact adhesion state under the conditions that the working current value generated on the coil loop is detected to be larger than 0 and the control instruction is invalid; determining that the target equipment is in a third fault state under the conditions that the working current value generated on the coil loop is greater than 0 and the effective duration of the control instruction is greater than or equal to a first preset duration; under the condition that the obtained working current value generated on the coil loop is 0 and the duration of invalid control instruction is greater than or equal to a second preset duration, the coil loop is determined to be in an open circuit state, and the purpose of improving the comprehensiveness of obtaining fault judgment information is further achieved, so that the effect of improving the accuracy of the fault information is achieved.

As an optional scheme, after determining that the target device is in the third failure state, the method further includes:

determining that the electromagnetic valve is in a fourth fault state under the condition that the working current value is larger than a first preset current value, wherein the first preset current value is larger than 0

Alternatively, the first preset current value may be, but is not limited to, a multiple of the rated current value of the solenoid valve, for example, 1.5 times the rated current value of the solenoid valve.

It should be noted that, in the case that the operating current value is greater than the first preset current value, it is determined that the solenoid valve is in the fourth fault state, where the first preset current value is greater than 0.

For further example, optionally, the solenoid valve is determined to be in the fault state when the operating current value is greater than 1.5 times the rated current value of the solenoid valve, for example.

Through the embodiment provided by the application, under the condition that the working current value is greater than the first preset current value, the electromagnetic valve is determined to be in the fourth fault state, wherein the first preset current value is greater than 0, and then the purpose of further acquiring the electromagnetic valve fault information is achieved, so that the effect of improving the generation accuracy of the electromagnetic valve fault information is achieved.

As an alternative, after determining that the solenoid valve is in the fourth fault state, the method includes:

s1, determining that the electromagnetic valve is in a partially open state under the condition that the working current value is larger than a first preset current value and smaller than a second preset current value, wherein the second preset current value is larger than the first preset current value in the partially open state, and the partially open state is used for indicating that the electromagnetic valve is not completely opened;

and S2, determining that the electromagnetic valve is in a fully closed state when the working current value is larger than or equal to a second preset current value, wherein the fully closed state is used for indicating that the electromagnetic valve is not opened.

It should be noted that, when the operating current value is greater than a first preset current value and less than a second preset current value, it is determined that the electromagnetic valve is in a partially open state, where the partially open state is where the second preset current value is greater than the first preset current value, and the partially open state is used to indicate that the electromagnetic valve is not completely opened; and under the condition that the working current value is larger than or equal to a second preset current value, determining that the electromagnetic valve is in a fully closed state, wherein the fully closed state is used for indicating that the electromagnetic valve is not opened.

For further example, it is optional to determine in which interval the current value is located, for example. When the current is 1.5 times of the rated current of the electromagnetic valve and 5 times of the rated current of the electromagnetic valve, the electromagnetic valve can be judged to be not completely opened, and an iron core in the electromagnetic valve does not completely enter a coil of the electromagnetic valve. And when the current value is more than 5 times of the rated current of the electromagnetic valve, the electromagnetic valve can be judged to be not opened, and an iron core in the electromagnetic valve does not enter the coil of the electromagnetic valve. The principle here is that when there is no iron core in the center of the electromagnetic coil, the inductive reactance is lower, the passing current is larger, when the iron core enters the center of the electromagnetic coil, the field intensity in the coil is increased, the inductive reactance of the coil is increased, and the passing current becomes smaller. The degree of the iron core entering the solenoid valve coil is judged according to the current, and then whether the valve plug connected with the iron core completely opens the water channel is judged.

According to the embodiment provided by the application, when the working current value is larger than a first preset current value and smaller than a second preset current value, the electromagnetic valve is determined to be in a partially opened state, wherein the partially opened state is used for indicating that the electromagnetic valve is not completely opened, and the second preset current value is larger than the first preset current value; and under the condition that the working current value is greater than or equal to a second preset current value, determining that the electromagnetic valve is in a fully closed state, wherein the fully closed state is used for indicating that the electromagnetic valve is not opened, so that the purpose of distinguishing the fault information of the electromagnetic valve in more detail is achieved, and the effect of improving the accuracy of the fault information of the electromagnetic valve is realized.

As an alternative, after determining that the coil loop is in the first fault state, the method includes:

s1, acquiring an alarm instruction;

and S2, controlling the target device to be in a stop operation state according to the instruction of the alarm instruction, wherein the stop operation state is used for indicating that the target device stops detecting the electric signal generated on the coil loop.

It is to be noted that, an alarm instruction is obtained; and according to the indication of the alarm instruction, controlling the target device to be in a stop operation state, wherein the stop operation state is used for indicating that the target device stops detecting the electric signals generated on the coil loop.

For further example, as shown in fig. 6, the following steps may be optionally performed:

step S602, continuously detecting a zero sequence current value;

step S604, judging whether the zero sequence current value is larger than 0, if not, continuing to execute step S602, and if so, executing step S606;

step S606, electric leakage alarm;

in step S608, the target device stops operating.

According to the embodiment provided by the application, an alarm instruction is obtained; according to the indication of the alarm instruction, the target equipment is controlled to be in the operation stop state, wherein the operation stop state is used for indicating that the target equipment stops detecting the electric signals generated on the coil loop, so that the aims of timely alarming when the condition of electric leakage is found and stopping the operation of the target equipment are fulfilled, and the effect of reducing the risk of larger accidents caused by the electric leakage is achieved.

As an alternative, after the control target device is in the shutdown state, the method includes:

s1, acquiring a reset instruction;

and S2, controlling the target device in the stop operation state to be in the operation state according to the instruction of the reset instruction, wherein the operation state is used for indicating that the target device starts to detect the electric signal generated on the coil loop.

It is to be noted that, a reset instruction is acquired; and controlling the target device in the stop operation state to be in an operation state according to the indication of the reset instruction, wherein the operation state is used for indicating that the target device starts to detect the electric signal generated on the coil loop.

For further example, as shown in fig. 7, the following steps may be optionally performed:

step S702, continuously detecting a zero sequence current value;

step S704, judging whether the zero sequence current value is larger than 0, if not, continuing to execute step S702, if so, executing step S706;

step S706, electric leakage alarm;

step 708, the target device stops running;

step S710 of determining whether to acquire a reset command, if not, continuing to execute step S708, and if so, executing step S712;

in step S712, the target device turns on and operates, and turns off the leakage alarm.

According to the embodiment provided by the application, a reset instruction is obtained; according to the indication of the reset instruction, the target equipment in the operation stop state is controlled to be in the operation state, wherein the operation state is used for indicating that the target equipment starts to detect the electric signal generated on the coil loop, and therefore the purposes of finishing the alarm and stopping the operation of the target equipment only after the reset is achieved, and the effect of improving the flexibility of electric leakage alarm processing of the target equipment is achieved.

It should be noted that, for simplicity of description, the above-mentioned method embodiments are described as a series of acts or combination of acts, but those skilled in the art will recognize that the present invention is not limited by the order of acts, as some steps may occur in other orders or concurrently in accordance with the invention. Further, those skilled in the art should also appreciate that the embodiments described in the specification are preferred embodiments and that the acts and modules referred to are not necessarily required by the invention.

According to another aspect of the embodiment of the present invention, there is also provided a device for generating fault notification information, which is used for implementing the method for generating fault notification information. As shown in fig. 8, the apparatus includes:

the detection unit 802 is configured to detect an electrical signal generated on a coil loop in the target device, where the coil loop is provided with an electromagnetic valve and a relay, the relay is used to control opening and closing of the electromagnetic valve, and the electromagnetic valve is used to control on/off of a water path of the target device;

a first determining unit 804, configured to determine that the target device is in a first fault state when a first electrical signal generated on a mutual inductor loop is detected, where the mutual inductor loop is used to detect a leakage current generated on the coil loop;

a second determining unit 806, configured to determine that the target device is in a second fault state when it is detected that the second electrical signal generated on the coil loop meets a first preset condition and a control instruction for controlling the electromagnetic valve to open and close meets a second preset condition;

the generating unit 808 is configured to generate fault notification information according to the first fault state and/or the second fault state, where the fault notification information is used to display that the target device is in a fault.

Optionally, in this embodiment, the generating device of the fault notification information may be applied, but not limited, to generating corresponding fault notification information for a fault related to an electromagnetic valve of a related device having a water inlet and outlet function. The target device may be, but is not limited to, an associated device with water inlet and outlet functions, such as a dishwasher, a washing machine, a water pump, and the like. The electromagnetic valve can be but not limited to a device which utilizes the electromagnetic effect and controls the water supply and water cut-off of the water circuit valve through power on and power off, and specifically, the iron core connected with the valve plug is driven to move by a magnetic field generated after the selectable electromagnetic coil is powered on, so that the valve plug is separated from the plugging position, and water in the valve can smoothly pass through the device. The relay can be but not limited to a device which utilizes an electromagnetic effect and controls the on and off of a switch through power on and off, specifically, the electromagnetic coil is selectively electrified, an iron core in the center of the coil moves under the action of a magnetic field generated by the coil to drive a switch contact inside the relay to be turned on from off, and after the electrification disappears, the contact is turned off again under the action of an internal reset spring. The detection of the electrical signal generated on the coil loop in the target device may be, but is not limited to, acquiring and collecting the signal generated on the circuit through a signal acquisition circuit; further optionally, the signal gain adjusting circuit may adjust the voltage or current of the collected signal to make the maximum value and the minimum value both in the voltage or current range that the main control board chip can process, so as to prevent signal distortion, where the gain may refer to, but is not limited to, the ratio of the output voltage or output current to the input voltage or input current after the signal passes through the unit; further alternatively, the circuit may be, but is not limited to, a circuit that filters the signal entering the unit through a filter circuit to remove various unwanted noise signals and retain the signal of actual interest.

As an alternative, as shown in fig. 9, the first determining unit 804 includes:

the first determining module 902 is configured to determine that the coil loop is in a leakage state when the obtained zero-sequence current value generated on the mutual inductor loop is greater than 0.

As an alternative, as shown in fig. 10, the second determining unit 806 includes:

the second determining module 1002 is configured to determine that the relay is in a contact adhesion state when it is detected that a working current value generated on the coil loop is greater than 0 and a control instruction is invalid;

a third determining module 1004, configured to determine that the target device is in a third fault state when it is obtained that the working current value generated on the coil loop is greater than 0 and the duration for which the control instruction is valid is greater than or equal to the first preset duration;

the fourth determining module 1006 is configured to determine that the coil loop is in an open-circuit state when the obtained working current value generated on the coil loop is 0 and the duration of the invalid control instruction is greater than or equal to a second preset duration.

As an optional scheme, the method further comprises the following steps:

and the fifth determining module is used for determining that the electromagnetic valve is in a fourth fault state under the condition that the working current value is greater than a first preset current value after the target device is determined to be in the third fault state, wherein the first preset current value is greater than 0.

As an alternative, the method comprises the following steps:

the sixth determining module is used for determining that the electromagnetic valve is in a partially opened state under the condition that the working current value is larger than the first preset current value and smaller than the second preset current value after the electromagnetic valve is determined to be in the fourth fault state, wherein the second preset current value is larger than the first preset current value in the partially opened state, and the partially opened state is used for indicating that the electromagnetic valve is not completely opened;

and the seventh determining module is used for determining that the electromagnetic valve is in a fully closed state under the condition that the working current value is greater than or equal to a second preset current value after the electromagnetic valve is determined to be in the fourth fault state, wherein the fully closed state is used for indicating that the electromagnetic valve is not opened.

As an alternative, the method comprises the following steps:

the first acquisition unit is used for acquiring an alarm instruction after the coil loop is determined to be in the first fault state;

and the first control unit is used for controlling the target device to be in a stop operation state according to the indication of the alarm instruction after determining that the coil loop is in the first fault state, wherein the stop operation state is used for indicating that the target device stops detecting the electric signal generated on the coil loop.

step S602, continuously detecting a zero sequence current value;

step S606, electric leakage alarm;

in step S608, the target device stops operating.

As an alternative, the method comprises the following steps:

a second acquisition unit configured to acquire a reset instruction after the control target device is in a stop operation state;

and the second control unit is used for controlling the target equipment in the running stop state to be in the running state according to the instruction of the reset instruction after the control target equipment is in the running stop state, wherein the running state is used for indicating that the target equipment starts to detect the electric signal generated on the coil loop.

step S702, continuously detecting a zero sequence current value;

step S706, electric leakage alarm;

step 708, the target device stops running;

According to another aspect of the embodiment of the present invention, there is further provided an electronic device for implementing the method for generating the fault notification information, as shown in fig. 11, the electronic device includes a memory 1102 and a processor 1104, the memory 1102 stores a computer program, and the processor 1104 is configured to execute the steps in any one of the method embodiments through the computer program.

Optionally, in this embodiment, the electronic apparatus may be located in at least one network device of a plurality of network devices of a computer network.

Optionally, in this embodiment, the processor may be configured to execute the following steps by a computer program:

s1, detecting an electric signal generated on a coil loop in the target equipment, wherein the coil loop is provided with an electromagnetic valve and a relay, the relay is used for controlling the opening and closing of the electromagnetic valve, and the electromagnetic valve is used for controlling the on-off of a water path of the target equipment;

s2, determining that the target device is in a first fault state under the condition that a first electric signal generated on a mutual inductance loop is detected, wherein the mutual inductance loop is used for detecting leakage current generated on a coil loop;

s3, determining that the target equipment is in a second fault state under the conditions that a second electric signal generated on the coil loop is detected to meet a first preset condition and a control instruction for controlling the electromagnetic valve to open and close is detected to meet a second preset condition;

and S4, generating fault prompt information according to the first fault state and/or the second fault state, wherein the fault prompt information is used for displaying that the target equipment is in fault.

Alternatively, it can be understood by those skilled in the art that the structure shown in fig. 11 is only an illustration, and the electronic device may also be a terminal device such as a smart phone (e.g., an Android phone, an iOS phone, etc.), a tablet computer, a palm computer, a Mobile Internet Device (MID), a PAD, and the like. Fig. 11 is a diagram illustrating a structure of the electronic device. For example, the electronic device may also include more or fewer components (e.g., network interfaces, etc.) than shown in FIG. 11, or have a different configuration than shown in FIG. 11.

The memory 1102 may be configured to store software programs and modules, such as program instructions/modules corresponding to the method and apparatus for generating fault notification information in the embodiments of the present invention, and the processor 1104 executes various functional applications and data processing by running the software programs and modules stored in the memory 1102, that is, implements the method for generating fault notification information. The memory 1102 may include high-speed random access memory, and may also include non-volatile memory, such as one or more magnetic storage devices, flash memory, or other non-volatile solid-state memory. In some examples, the memory 1102 can further include memory located remotely from the processor 1104 and such remote memory can be coupled to the terminal via a network. Examples of such networks include, but are not limited to, the internet, intranets, local area networks, mobile communication networks, and combinations thereof. The memory 1102 may be specifically but not limited to be used for storing information such as the first electrical signal, the second electrical signal, the first preset condition, the second preset condition, the fault notification information, and the like. As an example, as shown in fig. 11, the memory 1102 may include, but is not limited to, a detection unit 802, a first determination unit 804, a second determination unit 806, and a generation unit 808 in the generation apparatus of the failure indication information. In addition, the device may further include, but is not limited to, other module units in the above-mentioned generation apparatus of the fault notification information, which is not described in detail in this example.

Optionally, the transmitting device 1106 is used for receiving or transmitting data via a network. Examples of the network may include a wired network and a wireless network. In one example, the transmission device 1106 includes a Network adapter (NIC) that can be connected to a router via a Network cable to communicate with the internet or a local area Network. In one example, the transmission device 1106 is a Radio Frequency (RF) module, which is used for communicating with the internet in a wireless manner.

In addition, the electronic device further includes: a display 1108 for displaying the first electrical signal, the second electrical signal, the first preset condition, the second preset condition, the fault prompt message and other information; and a connection bus 1110 for connecting the respective module parts in the above-described electronic apparatus.

According to a further aspect of an embodiment of the present invention, there is also provided a computer-readable storage medium having a computer program stored thereon, wherein the computer program is arranged to perform the steps of any of the above method embodiments when executed.

Alternatively, in the present embodiment, the above-mentioned computer-readable storage medium may be configured to store a computer program for executing the steps of:

Alternatively, in this embodiment, a person skilled in the art may understand that all or part of the steps in the methods of the foregoing embodiments may be implemented by a program instructing hardware associated with the terminal device, where the program may be stored in a computer-readable storage medium, and the storage medium may include: flash disks, Read-Only memories (ROMs), Random Access Memories (RAMs), magnetic or optical disks, and the like.

The above-mentioned serial numbers of the embodiments of the present invention are merely for description and do not represent the merits of the embodiments.

The integrated unit in the above embodiments, if implemented in the form of a software functional unit and sold or used as a separate product, may be stored in the above computer-readable storage medium. Based on such understanding, the technical solution of the present invention may be substantially or partially implemented in the prior art, or all or part of the technical solution may be embodied in the form of a software product stored in a storage medium, and including instructions for causing one or more computer devices (which may be personal computers, servers, or network devices) to execute all or part of the steps of the method according to the embodiments of the present invention.

In the above embodiments of the present invention, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.

In the several embodiments provided in the present application, it should be understood that the disclosed client may be implemented in other manners. The above-described embodiments of the apparatus are merely illustrative, and for example, a division of a unit is merely a division of a logic function, and an actual implementation may have another division, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, units or modules, and may be in an electrical or other form.

Units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.

In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims

1. A method for generating fault prompt information is characterized by comprising the following steps:

detecting an electric signal generated on a coil loop in target equipment, wherein the coil loop is provided with an electromagnetic valve and a relay, the relay is used for controlling the opening and closing of the electromagnetic valve, and the electromagnetic valve is used for controlling the on-off of a water path of the target equipment;

under the condition that a first electric signal generated on a mutual inductance coil loop is detected, determining that the target device is in a first fault state, wherein the mutual inductance coil loop is used for detecting leakage current generated on the coil loop;

under the conditions that a second electric signal generated on the coil loop is detected to meet a first preset condition and a control instruction for controlling the electromagnetic valve to be opened and closed is detected to meet a second preset condition, determining that the target equipment is in a second fault state;

and generating fault prompt information according to the first fault state and/or the second fault state, wherein the fault prompt information is used for displaying that the target equipment is in fault.

2. The method of claim 1, wherein determining that the target device is in a first fault state upon detection of the first electrical signal generated on the mutual coil loop comprises:

3. The method according to claim 1, wherein the determining that the target device is in the second fault state in the case that the second electric signal generated on the coil loop is detected to satisfy a first preset condition and the control command for controlling the solenoid valve to open and close is detected to satisfy a second preset condition comprises:

under the condition that the working current value generated on the coil loop is detected to be larger than 0 and the control instruction is invalid, determining that the relay is in a contact adhesion state;

determining that the target equipment is in a third fault state under the condition that the working current value generated on the coil loop is greater than 0 and the effective duration of the control instruction is greater than or equal to a first preset duration;

and determining that the coil loop is in an open circuit state under the condition that the obtained working current value generated on the coil loop is 0 and the duration of the invalid control instruction is greater than or equal to a second preset duration.

4. The method of claim 3, further comprising, after the determining that the target device is in the third failure state:

and under the condition that the working current value is larger than a first preset current value, determining that the electromagnetic valve is in a fourth fault state, wherein the first preset current value is larger than 0.

5. The method of claim 4, after said determining that said solenoid valve is in a fourth fault state, comprising:

determining that the electromagnetic valve is in a partially open state under the condition that the working current value is greater than the first preset current value and less than a second preset current value, wherein the partially open state is a state in which the second preset current value is greater than the first preset current value and the partially open state is used for indicating that the electromagnetic valve is not completely opened;

and under the condition that the working current value is larger than or equal to the second preset current value, determining that the electromagnetic valve is in a fully closed state, wherein the fully closed state is used for indicating that the electromagnetic valve is not opened.

6. The method of any one of claims 1 to 5, after said determining that the coil loop is in the first fault state, comprising:

acquiring an alarm instruction;

and controlling the target equipment to be in a stop operation state according to the indication of the alarm instruction, wherein the stop operation state is used for indicating that the target equipment stops detecting the electric signals generated on the coil loop.

7. The method according to claim 6, comprising, after the controlling the target device in a shutdown state:

acquiring a reset instruction;

and controlling the target equipment in the operation stop state to be in an operation state according to the indication of a reset instruction, wherein the operation state is used for indicating that the target equipment starts to detect the electric signal generated on the coil loop.

8. An apparatus for generating a failure indication message, comprising:

the detection unit is used for detecting an electric signal generated on a coil loop in target equipment, wherein the coil loop is provided with an electromagnetic valve and a relay, the relay is used for controlling the opening and closing of the electromagnetic valve, and the electromagnetic valve is used for controlling the opening and closing of a water path of the target equipment;

the target device is determined to be in a first fault state under the condition that a first electric signal generated on a mutual inductor loop is detected, wherein the mutual inductor loop is used for detecting leakage current generated on the coil loop;

the second determining unit is used for determining that the target equipment is in a second fault state under the conditions that a second electric signal generated on the coil loop is detected to meet a first preset condition and a control command for controlling the electromagnetic valve to be opened and closed is detected to meet a second preset condition;

and the generating unit is used for generating fault prompt information according to the first fault state and/or the second fault state, wherein the fault prompt information is used for displaying that the target equipment is in fault.

9. A computer-readable storage medium, comprising a stored program, wherein the program is operable to perform the method of any one of claims 1 to 7.

10. An electronic device comprising a memory and a processor, characterized in that the memory has stored therein a computer program, the processor being arranged to execute the method of any of claims 1 to 7 by means of the computer program.