阅读说明：本技术 洗碗机故障检测方法和装置 (Method and device for detecting faults of dish-washing machine ) 是由 王晓东 徐浩 于 2020-05-21 设计创作，主要内容包括：本发明公开了一种洗碗机故障检测方法和装置。其中,该方法包括：获取控制指令,其中,控制指令包括注水指令或者停止注水指令,注水指令用于控制电磁阀调整到第一位置,以开始向洗碗机内注水,停止注水指令用于控制电磁阀调整到第二位置,以停止向洗碗机内注水；获取洗碗机中设置的流量计的流量读数与洗碗机中设置的水箱的水位变化参数,其中,流量计用于记录向洗碗机内注水的注水量,水位变化参数用于记录水箱内的水位变化情况；根据流量读数与水位变化参数确定出检测结果,其中,检测结果用于指示电磁阀与流量计是否出现故障。本发明解决了相关技术中确定洗碗机电磁阀与流量计是否故障效率低的技术问题。(The invention discloses a method and a device for detecting faults of a dish-washing machine. Wherein, the method comprises the following steps: acquiring a control instruction, wherein the control instruction comprises a water injection instruction or a water injection stopping instruction, the water injection instruction is used for controlling the electromagnetic valve to be adjusted to a first position so as to start injecting water into the dishwasher, and the water injection stopping instruction is used for controlling the electromagnetic valve to be adjusted to a second position so as to stop injecting water into the dishwasher; acquiring flow reading of a flow meter arranged in the dish washing machine and water level change parameters of a water tank arranged in the dish washing machine, wherein the flow meter is used for recording the water injection amount of water injected into the dish washing machine, and the water level change parameters are used for recording the water level change condition in the water tank; and determining a detection result according to the flow reading and the water level change parameter, wherein the detection result is used for indicating whether the electromagnetic valve and the flowmeter have faults or not. The invention solves the technical problem of low efficiency in determining whether the electromagnetic valve and the flowmeter of the dish washer have faults in the related technology.)

1. A dishwasher malfunction detection method, comprising:

acquiring a control instruction, wherein the control instruction comprises a water injection instruction or a water injection stopping instruction, the water injection instruction is used for controlling a solenoid valve to be adjusted to a first position so as to start injecting water into the dishwasher, and the water injection stopping instruction is used for controlling the solenoid valve to be adjusted to a second position so as to stop injecting water into the dishwasher;

acquiring flow reading of a flow meter arranged in the dishwasher and a water level change parameter of a water tank arranged in the dishwasher, wherein the flow meter is used for recording water injection amount of water injected into the dishwasher, and the water level change parameter is used for recording water level change conditions in the water tank;

and determining a detection result according to the flow reading and the water level change parameter, wherein the detection result is used for indicating whether the electromagnetic valve and the flowmeter have faults or not.

2. The method of claim 1, wherein determining a detection result based on the flow reading and the water level variation parameter comprises:

when the control instruction is a water injection instruction, the water level change parameter is nonzero, and the flow reading is zero, determining that the flowmeter is in failure, and the electromagnetic valve is normal;

and under the condition that the control instruction is a water injection instruction, the water level change parameter is nonzero, and the flow reading is nonzero, determining that the flowmeter is normal and the electromagnetic valve is normal.

3. The method of claim 1, wherein determining a test result based on the flow meter reading and the water level variation parameter comprises:

determining that the flowmeter and the electromagnetic valve are in failure under the conditions that the control instruction is a water injection stopping instruction, the water level change parameter is nonzero, and the flow reading is zero;

and determining that the flowmeter is normal and the electromagnetic valve is in failure under the conditions that the control instruction is a water injection stopping instruction, the water level change parameter is nonzero and the flow reading is nonzero.

4. The method according to any one of claims 1 to 3,

after obtaining a flow reading of a flow meter disposed in the dishwasher and a water level variation parameter of a water tank disposed in the dishwasher, the method further comprises: acquiring the water discharge amount of the dishwasher;

the determining a detection result according to the flow reading and the water level variation parameter comprises: when the control instruction is a water injection instruction, the water level variation parameter is zero, the flow reading is zero, and the water discharge is zero, it is determined that the flowmeter is normal and the electromagnetic valve is in failure;

when the control instruction is a water injection instruction, the water level change parameter is zero, the flow reading is zero, and the water discharge is nonzero, the flowmeter is determined to be in fault, and the electromagnetic valve is normal;

when the control instruction is a water injection instruction, the water level variation parameter is zero, the flow reading is nonzero, and the water discharge is zero, determining that the flowmeter has a fault and the electromagnetic valve has a fault;

and when the control instruction is a water injection instruction, the water level change parameter is zero, the flow reading is nonzero, and the water discharge is nonzero, the flowmeter is determined to be normal and the electromagnetic valve is normal.

5. The method according to any one of claims 1 to 3,

after obtaining a flow reading of a flow meter disposed in the dishwasher and a water level variation parameter of a water tank disposed in the dishwasher, the method further comprises: acquiring the water discharge amount of the dishwasher;

the determining a detection result according to the flow reading and the water level variation parameter comprises: when the control instruction is a water injection stopping instruction, the water level change parameter is zero, the flow reading is zero, and the water discharge is zero, it is determined that the flowmeter is normal and the electromagnetic valve is normal;

determining that the flowmeter and the electromagnetic valve are in fault when the control instruction is a water injection stopping instruction, the water level change parameter is zero, the flow reading is zero, and the water discharge is nonzero;

when the control instruction is a water injection stopping instruction, the water level change parameter is zero, the flow reading is nonzero, and the water discharge is zero, the flowmeter is determined to be in fault, and the electromagnetic valve is normal;

and when the control instruction is a water injection stopping instruction, the water level change parameter is zero, the flow reading is nonzero, and the water discharge is nonzero, the flowmeter is determined to be normal, and the electromagnetic valve fails.

6. A dishwasher malfunction detection apparatus, comprising:

the first acquisition unit is used for acquiring a control instruction, wherein the control instruction comprises a water injection instruction or a water injection stopping instruction, the water injection instruction is used for controlling the electromagnetic valve to be adjusted to a first position so as to start injecting water into the dishwasher, and the water injection stopping instruction is used for controlling the electromagnetic valve to be adjusted to a second position so as to stop injecting water into the dishwasher;

the second acquisition unit is used for acquiring flow readings of a flow meter arranged in the dishwasher and water level change parameters of a water tank arranged in the dishwasher, wherein the flow meter is used for recording the water injection amount of water injected into the dishwasher, and the water level change parameters are used for recording the water level change condition in the water tank;

and the determining unit is used for determining a detection result according to the flow reading and the water level change parameter, wherein the detection result is used for indicating whether the electromagnetic valve and the flowmeter are in failure.

7. The apparatus of claim 6, wherein the determining unit comprises:

the first determining module is used for determining that the flowmeter is in failure and the electromagnetic valve is normal under the conditions that the control instruction is a water injection instruction, the water level change parameter is nonzero and the flow reading is zero;

and the second determination module is used for determining that the flowmeter is normal and the electromagnetic valve is normal under the condition that the control instruction is a water injection instruction, the water level change parameter is nonzero and the flow reading is nonzero.

8. The apparatus of claim 6, wherein the determining unit comprises:

the third determining module is used for determining that the flowmeter and the electromagnetic valve are in failure under the condition that the control instruction is a water injection stopping instruction, the water level change parameter is nonzero, and the flow reading is zero;

and the fourth determination module is used for determining that the flowmeter is normal and the electromagnetic valve is in failure under the condition that the control instruction is a water injection stopping instruction, the water level change parameter is nonzero and the flow reading is nonzero.

9. The apparatus according to any one of claims 6 to 8,

the device further comprises: a third obtaining unit for obtaining the water discharge amount of the dish washer after obtaining the flow reading of the flow meter arranged in the dish washer and the water level variation parameter of the water tank arranged in the dish washer;

the determination unit includes:

a fifth determining module, configured to determine that the flow meter is normal and the electromagnetic valve is in a fault when the control instruction is a water injection instruction, the water level variation parameter is zero, the flow reading is zero, and the water discharge is zero;

a sixth determining module, configured to determine that the flowmeter is faulty and the electromagnetic valve is normal when the control instruction is a water injection instruction, the water level variation parameter is zero, the flow reading is zero, and the displacement is nonzero;

a seventh determining module, configured to determine that the flowmeter and the solenoid valve are faulty when the control instruction is a water injection instruction, the water level variation parameter is zero, the flow reading is non-zero, and the water discharge is zero;

and the eighth determining module is used for determining that the flowmeter is normal and the electromagnetic valve is normal under the condition that the control instruction is a water injection instruction, the water level change parameter is zero, the flow reading is nonzero and the water displacement is nonzero.

10. The apparatus according to any one of claims 6 to 8,

the device further comprises: a fourth obtaining unit for obtaining a water discharge amount of the dishwasher after obtaining a flow reading of a flow meter provided in the dishwasher and a water level variation parameter of a water tank provided in the dishwasher;

the determination unit includes:

a ninth determining module, configured to determine that the flow meter is normal and the electromagnetic valve is normal when the control instruction is a water injection stop instruction, the water level variation parameter is zero, the flow reading is zero, and the water discharge is zero;

a tenth determining module, configured to determine that the flowmeter and the solenoid valve are faulty when the control instruction is a water injection stop instruction, the water level variation parameter is zero, the flow reading is zero, and the displacement is nonzero;

an eleventh determining module, configured to determine that the flow meter is faulty and the electromagnetic valve is normal when the control instruction is a water injection stop instruction, the water level variation parameter is zero, the flow reading is non-zero, and the water discharge is zero;

and the twelfth determining module is used for determining that the flowmeter is normal and the electromagnetic valve is in fault under the condition that the control instruction is a water injection stopping instruction, the water level change parameter is zero, the flow reading is nonzero and the water discharge is nonzero.

Technical Field

The invention relates to the field of machinery, in particular to a method and a device for detecting faults of a dish-washing machine.

Background

Disclosure of Invention

The embodiment of the invention provides a method and a device for detecting faults of a dish-washing machine, which are used for at least solving the technical problem that whether an electromagnetic valve and a flow meter of the dish-washing machine have faults or not and the efficiency is low in the related technology.

According to an aspect of an embodiment of the present invention, there is provided a dishwasher fault detection method including: acquiring a control instruction, wherein the control instruction comprises a water injection instruction or a water injection stopping instruction, the water injection instruction is used for controlling a solenoid valve to be adjusted to a first position so as to start injecting water into the dishwasher, and the water injection stopping instruction is used for controlling the solenoid valve to be adjusted to a second position so as to stop injecting water into the dishwasher; acquiring flow reading of a flow meter arranged in the dish washing machine and water level change parameters of a water tank arranged in the dish washing machine, wherein the flow meter is used for recording water injection amount of water injected into the dish washing machine, and the water level change parameters are used for recording water level change conditions in the water tank; and determining a detection result according to the flow reading and the water level change parameter, wherein the detection result is used for indicating whether the electromagnetic valve and the flowmeter have faults or not.

As an optional example, the determining a detection result according to the flow reading and the water level variation parameter includes: when the control instruction is a water injection instruction, the water level change parameter is nonzero, and the flow reading is zero, determining that the flowmeter is in failure, and the electromagnetic valve is normal; and when the control command is a water injection command, the water level change parameter is nonzero, and the flow reading is nonzero, determining that the flowmeter is normal and the electromagnetic valve is normal.

As an optional example, the determining a detection result according to the flowmeter reading and the water level variation parameter includes: determining that the flowmeter and the electromagnetic valve are in failure when the control instruction is a water injection stopping instruction, the water level change parameter is nonzero, and the flow reading is zero; and when the control command is a water injection stopping command, the water level change parameter is nonzero, and the flow reading is nonzero, determining that the flowmeter is normal and the electromagnetic valve is in failure.

As an optional example, after obtaining the flow reading of the flow meter arranged in the dishwasher and the water level variation parameter of the water tank arranged in the dishwasher, the method further comprises: acquiring the water discharge amount of the dish washer; the determining a detection result according to the flow reading and the water level variation parameter includes: when the control command is a water injection command, the water level variation parameter is zero, the flow reading is zero, and the water discharge is zero, the flow meter is determined to be normal, and the electromagnetic valve is determined to be in fault; when the control command is a water injection command, the water level variation parameter is zero, the flow reading is zero, and the water discharge is nonzero, the flow meter is determined to be in fault, and the electromagnetic valve is normal; determining that the flow meter is in fault and the electromagnetic valve is in fault when the control command is a water injection command, the water level variation parameter is zero, the flow reading is nonzero, and the water discharge is zero; and when the control command is a water injection command, the water level change parameter is zero, the flow reading is nonzero, and the water discharge is nonzero, determining that the flowmeter is normal and the electromagnetic valve is normal.

As an optional example, after obtaining the flow reading of the flow meter arranged in the dishwasher and the water level variation parameter of the water tank arranged in the dishwasher, the method further comprises: acquiring the water discharge amount of the dish washer; the determining a detection result according to the flow reading and the water level variation parameter includes: when the control command is a command for stopping water injection, the water level variation parameter is zero, the flow reading is zero, and the water discharge is zero, the flowmeter is determined to be normal, and the electromagnetic valve is determined to be normal; determining that the flow meter is in fault and the electromagnetic valve is in fault when the control command is a water injection stopping command, the water level change parameter is zero, the flow reading is zero and the water discharge is nonzero; when the control command is a water injection stopping command, the water level change parameter is zero, the flow reading is nonzero, and the water discharge is zero, the flow meter is determined to be in fault, and the electromagnetic valve is normal; and when the control command is a water injection stopping command, the water level change parameter is zero, the flow reading is nonzero, and the water discharge is nonzero, determining that the flowmeter is normal and the electromagnetic valve is in failure.

According to another aspect of embodiments of the present invention, there is also provided a dishwasher fault detection apparatus including: the first acquisition unit is used for acquiring a control instruction, wherein the control instruction comprises a water injection instruction or a water injection stopping instruction, the water injection instruction is used for controlling the electromagnetic valve to be adjusted to a first position so as to start injecting water into the dishwasher, and the water injection stopping instruction is used for controlling the electromagnetic valve to be adjusted to a second position so as to stop injecting water into the dishwasher; a second obtaining unit, configured to obtain a flow reading of a flow meter disposed in the dishwasher and a water level variation parameter of a water tank disposed in the dishwasher, where the flow meter is configured to record a water injection amount of water injected into the dishwasher, and the water level variation parameter is configured to record a water level variation condition in the water tank; and the determining unit is used for determining a detection result according to the flow reading and the water level change parameter, wherein the detection result is used for indicating whether the electromagnetic valve and the flowmeter are in failure.

As an optional example, the determining unit includes: a first determining module, configured to determine that the flowmeter is faulty and the electromagnetic valve is normal when the control instruction is a water injection instruction, the water level variation parameter is nonzero, and the flow reading is zero; and the second determining module is used for determining that the flowmeter is normal and the electromagnetic valve is normal under the conditions that the control instruction is a water injection instruction, the water level change parameter is nonzero and the flow reading is nonzero.

As an optional example, the determining unit includes: a third determining module, configured to determine that the flow meter is faulty and the electromagnetic valve is faulty when the control instruction is a water injection stop instruction, the water level variation parameter is nonzero, and the flow reading is zero; and the fourth determining module is used for determining that the flowmeter is normal and the electromagnetic valve is in failure under the conditions that the control instruction is a water injection stopping instruction, the water level change parameter is nonzero and the flow reading is nonzero.

As an optional example, the apparatus further includes: a third obtaining unit for obtaining the water discharge of the dish washer after obtaining the flow reading of the flow meter arranged in the dish washer and the water level variation parameter of the water tank arranged in the dish washer; the determining unit includes: a fifth determining module, configured to determine that the flow meter is normal and the electromagnetic valve is faulty when the control instruction is a water injection instruction, the water level variation parameter is zero, the flow reading is zero, and the water discharge is zero; a sixth determining module, configured to determine that the flowmeter is faulty and the electromagnetic valve is normal when the control instruction is a water injection instruction, the water level variation parameter is zero, the flow reading is zero, and the water discharge is nonzero; a seventh determining module, configured to determine that the flowmeter and the electromagnetic valve are faulty when the control instruction is a water injection instruction, the water level variation parameter is zero, the flow reading is non-zero, and the water discharge is zero; and an eighth determining module, configured to determine that the flow meter is normal and the electromagnetic valve is normal when the control instruction is a water injection instruction, the water level variation parameter is zero, the flow reading is nonzero, and the water discharge is nonzero.

As an optional example, the apparatus further includes: a fourth obtaining unit for obtaining the water discharge of the dish washer after obtaining the flow reading of the flow meter arranged in the dish washer and the water level variation parameter of the water tank arranged in the dish washer; the determining unit includes: a ninth determining module, configured to determine that the flow meter is normal and the electromagnetic valve is normal when the control instruction is a water injection stop instruction, the water level variation parameter is zero, the flow reading is zero, and the water discharge amount is zero; a tenth determining module, configured to determine that the flow meter is faulty and the electromagnetic valve is faulty when the control instruction is a water injection stop instruction, the water level variation parameter is zero, the flow reading is zero, and the water discharge is nonzero; an eleventh determining module, configured to determine that the flow meter is faulty and the electromagnetic valve is normal when the control instruction is a water injection stop instruction, the water level variation parameter is zero, the flow reading is non-zero, and the water discharge is zero; and a twelfth determining module, configured to determine that the flow meter is normal and the electromagnetic valve is faulty when the control instruction is a water injection stop instruction, the water level variation parameter is zero, the flow reading is nonzero, and the water discharge is nonzero.

In the embodiment of the invention, a control instruction is obtained, wherein the control instruction comprises a water filling instruction or a water filling stopping instruction, the water filling instruction is used for controlling a solenoid valve to be adjusted to a first position so as to start water filling into the dishwasher, and the water filling stopping instruction is used for controlling the solenoid valve to be adjusted to a second position so as to stop water filling into the dishwasher; acquiring flow reading of a flow meter arranged in the dish washing machine and water level change parameters of a water tank arranged in the dish washing machine, wherein the flow meter is used for recording water injection amount of water injected into the dish washing machine, and the water level change parameters are used for recording water level change conditions in the water tank; and determining a detection result according to the flow reading and the water level change parameter, wherein the detection result is used for indicating whether the electromagnetic valve and the flowmeter have faults or not.

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 flow diagram of an alternative dishwasher fault detection method according to an embodiment of the present invention;

FIG. 2 is a schematic diagram of an alternative dishwasher fault detection method according to an embodiment of the present invention;

FIG. 3 is a schematic diagram of an alternative dishwasher fault detection method according to an embodiment of the present invention;

fig. 4 is a schematic structural view of an alternative dishwasher fault detection apparatus according to an embodiment of the present 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 an embodiment of the present invention, there is provided a dishwasher fault detection method, optionally, as shown in fig. 1, the dishwasher fault detection method including:

s102, acquiring a control instruction, wherein the control instruction comprises a water injection instruction or a water injection stopping instruction, the water injection instruction is used for controlling the electromagnetic valve to be adjusted to a first position so as to start water injection into the dishwasher, and the water injection stopping instruction is used for controlling the electromagnetic valve to be adjusted to a second position so as to stop water injection into the dishwasher;

s104, acquiring flow reading of a flow meter arranged in the dish washing machine and water level change parameters of a water tank arranged in the dish washing machine, wherein the flow meter is used for recording water injection amount of water injected into the dish washing machine, and the water level change parameters are used for recording water level change conditions in the water tank;

and S106, determining a detection result according to the flow reading and the water level change parameter, wherein the detection result is used for indicating whether the electromagnetic valve and the flowmeter are in failure.

Optionally, the above-mentioned dishwasher fault detection method can be but not limited to be applied to the in-process of the fault detection of the electromagnetic valve and the flowmeter in the dishwasher, in the prior art, if the electromagnetic valve and the flowmeter are to be detected, the dishwasher needs to be dismantled and then detected, and after the control instruction is obtained, whether the electromagnetic valve and the flowmeter are faulty can be determined by obtaining the reading of the flowmeter in the dishwasher and the water level variation parameter of the water tank in the dishwasher, so that the efficiency of the fault detection of the dishwasher is improved.

The flow meter is used for monitoring the water injection quantity of the water injection into the dishwasher, and the water level change parameter is the value of the water level change of the water tank in the dishwasher, and if the water level change parameter is changed from 30L to 60L, the water level change parameter is 30L.

Optionally, the water level variation parameter may be a value of a water level variation in a main washing water tank of the dishwasher, or may be a value of a water level variation in a rinsing water tank.

Optionally, the dishwasher in the present scheme is a dishwasher carrying an electromagnetic valve and a flow meter, and the model and specification of the dishwasher are not limited herein. As an alternative example, as shown in FIG. 2, FIG. 2 is a schematic view of an alternative dishwasher.

After entering the dishwasher, the tap water first passes through the electromagnetic valve 202, and when the electromagnetic valve 202 is at the first position, the valve is in an open state, and the tap water is continuously injected into the dishwasher. The flow meter 204 is used to record the amount of water injected into the dishwasher. Tap water first enters the rinse water tank 208, the rinse water tank 208 may store tap water, and the rinse heating pipe 206 is used to heat water in the rinse water tank. The rinse pump 210 may pressurize the water in the rinse water tank 208 to the upper rinse arm 216 and the lower rinse arm 214, and the water is sprayed from the upper rinse arm 216 and the lower rinse arm 214 to the main wash water tank 222, the main wash heating pipe 220 is used for heating the water in the main wash water tank, the main wash level switch 218 is used for monitoring the level of the water in the main wash water tank 222, and the rinse level switch 212 is used for monitoring the level of the water in the rinse water tank. Under normal conditions, if receive the control command of water injection, then the solenoid valve can adjust to the primary importance and carry out the water injection, and the flowmeter will have the reading, and the water level variation parameter will rise when the water tank is not full, no longer rises when the water tank is full, and the water discharge in the water tank is simultaneously discharged to the dish washer water injection this moment in to the dish washer. If the water injection stopping instruction is received, the electromagnetic valve is adjusted to the second position to stop water injection, the flow meter cannot read, water in the water tank does not rise any more, and the water tank of the dish washing machine does not discharge water outwards.

It should be noted that the above-mentioned dishwasher is only an example, and the dishwasher to which the present solution is applied may include more or less components than the above-mentioned dishwasher, or may replace the components of the above-mentioned dishwasher, etc. The present embodiment is not limited.

Optionally, the prompt detection result in the present scheme may be a detection result displayed on a display screen of the dishwasher, such as a failure of the electromagnetic valve and/or the flow meter, or a normal electromagnetic valve and/or the flow meter. The dishwasher may also be bound to a terminal, such as a mobile phone or a computer, and then the detection result may be transmitted to the terminal.

The detection method in this embodiment will be described below with reference to fig. 3.

After the dishwasher receives the control command 302, the type of control command can be checked. If the control command is the water filling command 304, the water level variation parameter 308 is further determined, and if the water level variation parameter 308 is non-zero, it indicates that the solenoid valve is in the first position and water is being filled. The solenoid valve is normal. At this time, if the reading of the flow meter is zero, it indicates that the flow meter is faulty. If the flow meter reading is non-zero, the flow meter is normal. If the control command is the water filling command 304, the water level variation parameter 308 is zero, and it may be that the water tank is full of water and the dishwasher is filling water and draining water, at this time, although the water level variation parameter 308 is zero, it cannot be determined whether the solenoid valve is faulty according to the water level variation parameter 308. Further judgment is required. Acquiring a numerical value of the water discharge 312, if the water discharge 312 is zero, indicating that the water tank is not full, further indicating that the electromagnetic valve does not fill water, at this time, indicating that the electromagnetic valve fails (water is not filled after receiving a water filling instruction), if the flowmeter reading 310 is nonzero, indicating that the flowmeter fails, and if the flowmeter reading 310 is zero, indicating that the flowmeter is normal. If the control command is the water filling command 304, the water level variation parameter 308 is zero, but the water discharge 312 is non-zero, which means that the solenoid valve is filling water even if the water level variation parameter 308 is zero. At this time, the solenoid valve is normal and water is being injected. If the flow meter reading 310 is zero, the flow meter is malfunctioning, and if the flow meter reading 310 is non-zero, the flow meter is normal.

The above is the case where the control command is a water filling command. If the control command is the water filling stopping command 306, the water level variation parameter 308 can be checked, and if the water level variation parameter 308 is nonzero, the solenoid valve is water filling and fails. If the flow meter reading 310 is non-zero, the flow meter is normal, and if the flow meter reading 310 is zero, the flow meter is malfunctioning. If the control command is the stop water filling command 306 and the water level variation parameter 308 is zero, the water tank may be full. At this time, the water discharge amount 312 needs to be further determined, and if the water discharge amount 312 is zero, the solenoid valve is not filled with water and is normal. At this point, the flow meter is normal if the flow meter reading 310 is zero, and the flow meter is faulty if the flow meter reading 310 is non-zero. If the control command is a water filling stopping command 306, the water level change parameter 308 is zero, but the water discharge 312 is nonzero, the electromagnetic valve is indicated to be in fault, water is filled, if the flow meter reading 310 is nonzero, the flow meter is normal, and if the flow meter reading 310 is zero, the flow meter is in fault.

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 embodiments of the present invention, there is also provided a dishwasher fault detection apparatus for implementing the above-described dishwasher fault detection method. As shown in fig. 4, the apparatus includes:

(1) a first obtaining unit 402, configured to obtain a control instruction, where the control instruction includes a water injection instruction or a water injection stopping instruction, the water injection instruction is used to control the solenoid valve to adjust to a first position to start injecting water into the dishwasher, and the water injection stopping instruction is used to control the solenoid valve to adjust to a second position to stop injecting water into the dishwasher;

(2) a second obtaining unit 404, configured to obtain a flow reading of a flow meter arranged in the dishwasher and a water level variation parameter of a water tank arranged in the dishwasher, where the flow meter is configured to record a water injection amount of water injected into the dishwasher, and the water level variation parameter is configured to record a water level variation condition in the water tank;

(3) and a determining unit 406, configured to determine a detection result according to the flow reading and the water level variation parameter, where the detection result is used to indicate whether the electromagnetic valve and the flow meter have a fault.

Optionally, above-mentioned dish washer fault detection device can be but not limited to the in-process that is applied to the fault detection of the solenoid valve in the dish washer and flowmeter, among the prior art, if want to detect solenoid valve and flowmeter, need tear dish washer out with it, then detect, this scheme is through obtaining behind the control command, whether the reading of flowmeter in the dish washer and the water level variation parameter of water tank in the dish washer can be confirmed whether solenoid valve and flowmeter are trouble, improved dish washer fault detection's efficiency.

The flow meter is used for monitoring the water injection quantity of the water injection into the dishwasher, and the water level change parameter is the value of the water level change of the water tank in the dishwasher, and if the water level change parameter is changed from 30L to 60L, the water level change parameter is 30L.

Optionally, the water level variation parameter may be a value of a water level variation in a main washing water tank of the dishwasher, or may be a value of a water level variation in a rinsing water tank.

Optionally, the dishwasher in the present scheme is a dishwasher carrying an electromagnetic valve and a flow meter, and the model and specification of the dishwasher are not limited herein. As an alternative example, as shown in FIG. 2, FIG. 2 is a schematic view of an alternative dishwasher.

After entering the dishwasher, the tap water first passes through the electromagnetic valve 202, and when the electromagnetic valve 202 is at the first position, the valve is in an open state, and the tap water is continuously injected into the dishwasher. The flow meter 204 is used to record the amount of water injected into the dishwasher. Tap water first enters the rinse water tank 208, the rinse water tank 208 may store tap water, and the rinse heating pipe 206 is used to heat water in the rinse water tank. The rinse pump 210 may pressurize the water in the rinse water tank 208 to the upper rinse arm 216 and the lower rinse arm 214, and the water is sprayed from the upper rinse arm 216 and the lower rinse arm 214 to the main wash water tank 222, the main wash heating pipe 220 is used for heating the water in the main wash water tank, the main wash level switch 218 is used for monitoring the level of the water in the main wash water tank 222, and the rinse level switch 212 is used for monitoring the level of the water in the rinse water tank. Under normal conditions, if receive the control command of water injection, then the solenoid valve can adjust to the primary importance and carry out the water injection, and the flowmeter will have the reading, and the water level variation parameter will rise when the water tank is not full, no longer rises when the water tank is full, and the water discharge in the water tank is simultaneously discharged to the dish washer water injection this moment in to the dish washer. If the water injection stopping instruction is received, the electromagnetic valve is adjusted to the second position to stop water injection, the flow meter cannot read, water in the water tank does not rise any more, and the water tank of the dish washing machine does not discharge water outwards.

It should be noted that the above-mentioned dishwasher is only an example, and the dishwasher to which the present solution is applied may include more or less components than the above-mentioned dishwasher, or may replace the components of the above-mentioned dishwasher, etc. The present embodiment is not limited.

Optionally, the prompt detection result in the present scheme may be a detection result displayed on a display screen of the dishwasher, such as a failure of the electromagnetic valve and/or the flow meter, or a normal electromagnetic valve and/or the flow meter. The dishwasher may also be bound to a terminal, such as a mobile phone or a computer, and then the detection result may be transmitted to the terminal.

The detection method in this embodiment will be described below with reference to fig. 3.

After the dishwasher receives the control command 302, the type of control command can be checked. If the control command is the water filling command 304, the water level variation parameter 308 is further determined, and if the water level variation parameter 308 is non-zero, it indicates that the solenoid valve is in the first position and water is being filled. The solenoid valve is normal. At this time, if the reading of the flow meter is zero, it indicates that the flow meter is faulty. If the flow meter reading is non-zero, the flow meter is normal. If the control command is the water filling command 304, the water level variation parameter 308 is zero, and it may be that the water tank is full of water and the dishwasher is filling water and draining water, at this time, although the water level variation parameter 308 is zero, it cannot be determined whether the solenoid valve is faulty according to the water level variation parameter 308. Further judgment is required. Acquiring a numerical value of the water discharge 312, if the water discharge 312 is zero, indicating that the water tank is not full, further indicating that the electromagnetic valve does not fill water, at this time, indicating that the electromagnetic valve fails (water is not filled after receiving a water filling instruction), if the flowmeter reading 310 is nonzero, indicating that the flowmeter fails, and if the flowmeter reading 310 is zero, indicating that the flowmeter is normal. If the control command is the water filling command 304, the water level variation parameter 308 is zero, but the water discharge 312 is non-zero, which means that the solenoid valve is filling water even if the water level variation parameter 308 is zero. At this time, the solenoid valve is normal and water is being injected. If the flow meter reading 310 is zero, the flow meter is malfunctioning, and if the flow meter reading 310 is non-zero, the flow meter is normal.

The above is the case where the control command is a water filling command. If the control command is the water filling stopping command 306, the water level variation parameter 308 can be checked, and if the water level variation parameter 308 is nonzero, the solenoid valve is water filling and fails. If the flow meter reading 310 is non-zero, the flow meter is normal, and if the flow meter reading 310 is zero, the flow meter is malfunctioning. If the control command is the stop water filling command 306 and the water level variation parameter 308 is zero, the water tank may be full. At this time, the water discharge amount 312 needs to be further determined, and if the water discharge amount 312 is zero, the solenoid valve is not filled with water and is normal. At this point, the flow meter is normal if the flow meter reading 310 is zero, and the flow meter is faulty if the flow meter reading 310 is non-zero. If the control command is a water filling stopping command 306, the water level change parameter 308 is zero, but the water discharge 312 is nonzero, the electromagnetic valve is indicated to be in fault, water is filled, if the flow meter reading 310 is nonzero, the flow meter is normal, and if the flow meter reading 310 is zero, the flow meter is in fault.

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.

The 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.