EP3290558B1 - Procédé de traitement et de détection de panne de machine à laver - Google Patents

Procédé de traitement et de détection de panne de machine à laver Download PDF

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Publication number
EP3290558B1
EP3290558B1 EP16785784.6A EP16785784A EP3290558B1 EP 3290558 B1 EP3290558 B1 EP 3290558B1 EP 16785784 A EP16785784 A EP 16785784A EP 3290558 B1 EP3290558 B1 EP 3290558B1
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EP
European Patent Office
Prior art keywords
washing machine
detection
data
value
read
Prior art date
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Application number
EP16785784.6A
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German (de)
English (en)
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EP3290558C0 (fr
EP3290558A4 (fr
EP3290558A1 (fr
Inventor
Lin Yang
Yu Chen
Kai Xue
Dafeng FANG
Liangliang YU
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Qingdao Haier Washing Machine Co Ltd
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Qingdao Haier Washing Machine Co Ltd
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Publication of EP3290558A4 publication Critical patent/EP3290558A4/fr
Application granted granted Critical
Publication of EP3290558B1 publication Critical patent/EP3290558B1/fr
Publication of EP3290558C0 publication Critical patent/EP3290558C0/fr
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Classifications

    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F33/00—Control of operations performed in washing machines or washer-dryers 
    • D06F33/30—Control of washing machines characterised by the purpose or target of the control 
    • D06F33/47—Responding to irregular working conditions, e.g. malfunctioning of pumps 
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F33/00—Control of operations performed in washing machines or washer-dryers 
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F2103/00—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
    • D06F2103/18—Washing liquid level
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F2105/00—Systems or parameters controlled or affected by the control systems of washing machines, washer-dryers or laundry dryers
    • D06F2105/52—Changing sequence of operational steps; Carrying out additional operational steps; Modifying operational steps, e.g. by extending duration of steps
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F33/00—Control of operations performed in washing machines or washer-dryers 
    • D06F33/30—Control of washing machines characterised by the purpose or target of the control 
    • D06F33/44—Control of the operating time, e.g. reduction of overall operating time
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F33/00—Control of operations performed in washing machines or washer-dryers 
    • D06F33/30—Control of washing machines characterised by the purpose or target of the control 
    • D06F33/46—Control of the energy or water consumption
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F37/00—Details specific to washing machines covered by groups D06F21/00 - D06F25/00
    • D06F37/42—Safety arrangements, e.g. for stopping rotation of the receptacle upon opening of the casing door

Definitions

  • the present invention belongs to the technical field of washing machine, and more particularly to a method for washing machine failure detection and processing.
  • Only the door open/closed status signal is considered in processing in the traditional washing machine detection program.
  • two IO ports are used and the input ports receiving the signals are scanned and read every 10ms; if the signal is not changed in 100 ms continuously, the result by logic operation of NAND of the two IO ports output is being assigned to a buffer register. If the door open signal is detected by at least one of the IO port, the door is regarded in an open state and then the display chip and the power controller are in communication. If the display chip receives the signal indicating the door is opened or the communication with the power controller is failed longer than 3 seconds by means of CRC8 (Cyclic Redundancy Check 8-bit), the motor of the washing machine is being stopped.
  • CRC8 Cyclic Redundancy Check 8-bit
  • EP 1 186 695 is considered to be prior art and discloses a remote control system for a laundry appliance including a remote control device externally accessible via a communication network, the remote control device including a data base storing coping information used to cope with an abnormal condition occurring during operation of the laundry appliance, for every type of the laundry appliance, and a laundry appliance control device connected via the communication network to the remote control device so as to receive the coping information corresponding to the abnormal condition via the communication network from the remote control device when the abnormal condition has occurred in the laundry appliance.
  • the present invention is implemented by the following technical solution.
  • a method for detecting and processing washing machine failure comprising:
  • a Program Counter (PC) pointer detection step which includes:
  • step (13) after resetting the system, reading the current water level data from the water-level sensor and comparing the current water level against the preset water level data, if the current water level is higher than the preset water level, ignoring the water supply program and implementing the subsequent program; if the current water level is zero, implementing the spin-dry program.
  • the method includes a zero-crossing interrupt detection step, in which includes:
  • the method includes a fixed cycle interrupt detection step, in which includes: When it is detected that the upper cover of the washing machine is opened while the alarm fails to properly function and/or the procedure for terminating the current running subroutine is not timely executed, the fixed cycle interrupt error occurs, resetting the system.
  • the method includes a analog to digital conversion (DC) fault detection step of the RAM of the SCM (Single Chip Microcomputer), in which includes:
  • the method includes a SCM register error detection step, in which includes:
  • the method includes a ROM detection step, in which includes: calculating the CRC-16 checksum of the area code of ROM, and then comparing the result with the fixed CRC-16 checksum stored in the ROM, if a mismatch found, ROM error occurs and the exception handling is executed.
  • the ROM detection step calculating the CRC16 check value of a 32-bit data extracted from the ROM every time, and the CRC16 check value of all of the ROM areas are produced until the calculation of all of the data in the ROM is completed.
  • the method further includes the step for processing the special function register: periodically assigning set values repeatedly to the configuration registers of the functional modules used in the SCM.
  • the washing machine failure detection processing method of the present invention can prevent internal operation errors caused by the running programs algorithm of washing machine, and also prevent other faulty operation patterns such as water supply exceeded or washing time exceeded, thereby ensuring the safe operation of the washing machine and reducing the possibility of personal injury caused by the washing machine failures.
  • the present invention provides a washing machine failure detection processing method comprising the following steps: A PC pointer detection step, as shown in Fig.1 :
  • the PC pointer value always vectors to the address of the current executed program. If the PC pointer error occurs in runtime, the washing machine may maintain the current operation patterns because of the control failure, leading to errors as washing time exceeded, spin-dry time exceeded, or water supply exceeded. Those faults do not only damage the motor or other components, but also may further result in accidents and risk the safety of user.
  • the PC pointer detection can sense the runtime safety problems and implement proper process to correct, so that the errors as water supply exceeded or idling cased by internal operation algorithm error could be prevented, thereby ensuring the safety operation of washing machine and lower the possibility of personal injury.
  • the present embodiment after resetting the system in the step S13, in order to prevent repeatedly execute the same program, as example filling water, the present embodiment provides further procedures, in which including reading the current water level data from the water-level sensor and comparing the current water level with the preset water level, if the current water level is higher than the preset water level, ignoring the water supply program and implementing the subsequent program; if the current water level is zero, implementing the spin-dry program. Since at least one complete subroutine is executed through the step S11 and step S12, it is assumed that a complete water supply process is performed. If the current water level is zero, there is no need to perform the water supply program or the washing program repeatedly, the direct execution of the spin-dry program could save water and power and also shorten the operation time.
  • the present embodiment also includes a zero-crossing interrupt detection step, in which includes:
  • the electricity power frequency is 50Hz.
  • the external interrupt port of the SCM receives the electricity power signal through extra electricity circuit.
  • the interrupt generated is defined as the zero-crossing interrupt and the normal signal period is 20ms.
  • the comparison result between the signal period of the zero-crossing interrupt and the time set by the SCM timing controller is used in the program to determine whether the timing interrupt or the zero-crossing interrupt is regular. If a zero-crossing interrupt error occurs, the washing machine may be in a running pattern of continuous one-way rotation which is possibly neglect by the users.
  • the zero-crossing interrupt detection step could sense this zero-crossing error timely and execute system resetting to ensure the safety operation.
  • the present embodiment also includes fixed cycle interrupt detection step, in which includes: When it is detected that the upper cover of the washing machine is opened while the alarm fails to properly function and/or the procedure for terminating the current running subroutine is not timely executed, the fixed cycle interrupt error occurs, resetting the system.
  • the fixed cycle interrupt is used to detect sudden situations when the washing machine should be stopped, such as the upper cover of the washing machine is opened in normal operation, and also used to automatically terminate the running of the washing machine and send alarm signal for preventing users from hurting.
  • the occurrence of the fixed cycle interrupt error results in the situation that the alarm fails to properly function while the washing machine is still running regardless the upper cover is opened, which is a potential safety risk for users.
  • the embodiment is to use the fixed cycle interrupt to further ensure the safety of washing machine running.
  • a DC fault detection step of the RAM of the SCM is provided in this embodiment, in which including:
  • the embodiment includes a SCM register error detection step, in which includes:
  • the method further includes a ROM detection step, in which includes: calculating the CRC-16 checksum of the area code of ROM, and then comparing the result with the fixed CRC-16 checksum stored in the ROM, if a mismatch found, ROM error occurs and the exception handling is executed.
  • CRC is an error check code and characterized in that the bit length of the message and the bit length of the validity are selective.
  • the bits representing the input can be encoded by a polynomial selected and the result is appended with, in the receiving end, the same algorithm is executed to ensure the correctness and completeness of data communication.
  • the CRC-8 cannot meet the requirements for distributing the message length of the area code of ROM while the using of CRC-32 is redundant. Therefore, the CRC-16 is preferably selected to according to the requirements of the area code of ROM and the expected distribution of message length. The use of the CRC-16 can prevent errors written in the programs occurring, thereby ensuring the safe operation of washing machine with program correctness.
  • the ROM detection step calculating the CRC16 check value of a 32-bit data extracted from the ROM each time, and the CRC16 check value of the ROM area is produced until calculation with all ROM data completed.
  • the washing machine failure detection processing method of the present embodiment further includes the step for processing the special function register, in which comprises: periodically assigning set values repeatedly to the configuration registers of the functional modules used in the SCM.
  • the special function register typically used to control the input port and the output port of the SCM.
  • the repeated non-stop assignment is used in this step to timely correct the written value which may be mistakenly written, without affecting the safe operation of the program.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Control Of Washing Machine And Dryer (AREA)

Claims (8)

  1. Procédé de détection et de traitement des pannes de lave-linge, comprenant une étape de détection du pointeur du compteur de programme:
    on détecte les programmes qui gèrent respectivement diverses procédures de fonctionnement de la machine à laver, dans lesquels chacun des programmes correspond à un sous-programme, et on assigne la valeur d'un registre logique lorsque l'exécution de chaque sous-programme commence, dans lesquels les programmes comprennent au moins le programme d'alimentation en eau, le programme de lavage et le programme d'essorage;
    on détecte si la valeur actuelle du registre logique est identique à la valeur assignée lorsque chacun des sous-programmes termine son exécution, si la valeur actuelle et la valeur assignée sont différentes, on détermine que l'erreur de pointeur de compteur de programme s'est produite, et le programme dans lequel l'erreur s'est produite est stocké en fonction de la valeur assignée;
    lorsque l'erreur de pointeur de compteur de programme est déterminée, on retarde de t1, et ensuite on détecte en continu si la valeur actuelle du registre logique est identique à la valeur assignée, si elle est identique, on exécute en continu le sous-programme, sinon on effectue une réinitialisation du système.
  2. Procédé de détection et de traitement des pannes de lave-linge selon la revendication 1, comprenant en outre une étape de détection de l'interruption au passage à zéro:
    on règle la période T1 d'interruption au passage à zéro et on détecte la période réelle T de l'interruption au passage à zéro du signal moteur;
    on détermine si la période T de l'interruption au passage à zéro appartient à la plage [T1-Δt1, T1+Δt1], si elle se trouve dans la plage, l'interruption au passage à zéro est régulière, sinon l'interruption au passage à zéro est irrégulière;
    si l'interruption au passage à zéro est irrégulière, on réinitialise à nouveau le système.
  3. Procédé de détection et de traitement des pannes de lave-linge selon la revendication 1 ou la revendication 2, comprenant en outre une étape de détection de l'interruption d'un cycle fixe, dans laquelle on utilise l'interruption du cycle fixe pour détecter des situations soudaines dans lesquelles le lave-linge doit être arrêté:
    lorsqu'il est détecté que le couvercle supérieur du lave-linge est ouvert alors que l'alarme ne fonctionne pas correctement et/ou que la procédure de fin du sous-programme en cours d'exécution n'est pas exécutée à temps, l'erreur d'interruption du cycle fixe se produit, entraînant la réinitialisation du système.
  4. Procédé de détection et de traitement des pannes de lave-linge selon la revendication 1 ou la revendication 2, comprenant en outre une étape de détection des défauts de conversion analogique-numérique de la mémoire vive du micro-ordinateur à puce unique:
    on détecte toutes les adresses de la mémoire vive du micro-ordinateur à puce unique de manière cyclique par la méthode de détection en échiquier;
    on stocke les données des adresses à détecter et on désactive les interruptions avant la détection ; on attribue tout d'abord Ox55 ou Oxaa à la première adresse à détecter tout en attribuant l'autre valeur à l'adresse suivante à détecter, et ensuite on lit les données à partir des deux adresses et on les compare aux données écrites assignées respectivement, si aucune correspondance exacte n'est trouvée, une erreur de mémoire vive se produit et on exécute le traitement d'exception ; si les données correspondent, on détecte les autres adresses de la mémoire vive de manière cyclique avec la même méthode jusqu'à ce que toutes les adresses aient été détectées.
  5. Procédé de détection et de traitement des pannes de lave-linge selon la revendication 4, comprenant en outre une étape de détection des erreurs de registre du micro-ordinateur à puce unique:
    on détecte de manière cyclique tous les registres par la méthode de détection en échiquier;
    on écrit soit 0x55 soit Oxaa dans chacun des registres en séquence et ensuite on lit la sortie, on compare les données écrites avec les lectures des données pour confirmer si la sortie est identique aux données écrites à l'origine ; et ensuite on écrit l'autre valeur de 0x55 ou Oxaa dans le registre et ensuite on lit la sortie, on compare les données écrites et les lectures des données pour confirmer si la sortie est identique aux données écrites à l'origine ; si la correspondance exacte est trouvée dans les deux comparaisons, le registre est régulier ; dans le cas contraire, une erreur de registre se produit.
  6. Procédé de détection et de traitement des pannes de machine à laver selon la revendication 5, comprenant en outre une étape de détection de la mémoire à lecture seule:
    on calcule la somme de contrôle CRC-16 du code de zone de la mémoire à lecture seule, et ensuite on compare le résultat avec la somme de contrôle CRC-16 fixe stockée dans la mémoire à lecture seule (ROM), si on trouve une non-concordance, une erreur de mémoire à lecture seule se produit et on exécute le traitement d'exception.
  7. Procédé de détection et de traitement des pannes de lave-linge selon la revendication 6, comprenant en outre: dans l'étape de détection de la mémoire à lecture seule, on calcule à chaque fois la valeur de contrôle CRC16 d'une donnée de 32 bits extraite de la mémoire à lecture seule, et on produit la valeur de contrôle CRC16 de toutes les zones de la mémoire à lecture seule jusqu'à ce que le calcul de toutes les données de la mémoire à lecture seule soit terminé.
  8. Procédé de détection et de traitement des pannes de lave-linge selon la revendication 7, comprenant en outre une étape de traitement de registres de fonction Spéciale:
    on attribue périodiquement de façon répétée des valeurs de consigne aux registres de configuration des modules fonctionnels utilisés dans le micro-ordinateur à puce unique.
EP16785784.6A 2015-04-28 2016-03-28 Procédé de traitement et de détection de panne de machine à laver Active EP3290558B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201510209110.3A CN106149284B (zh) 2015-04-28 2015-04-28 一种洗衣机故障检测处理方法
PCT/CN2016/077510 WO2016173353A1 (fr) 2015-04-28 2016-03-28 Procédé de traitement et de détection de panne de machine à laver

Publications (4)

Publication Number Publication Date
EP3290558A1 EP3290558A1 (fr) 2018-03-07
EP3290558A4 EP3290558A4 (fr) 2019-04-10
EP3290558B1 true EP3290558B1 (fr) 2023-07-19
EP3290558C0 EP3290558C0 (fr) 2023-07-19

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US (1) US20180135224A1 (fr)
EP (1) EP3290558B1 (fr)
JP (1) JP6697483B2 (fr)
KR (1) KR20180013898A (fr)
CN (1) CN106149284B (fr)
WO (1) WO2016173353A1 (fr)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11656615B2 (en) 2020-11-30 2023-05-23 Haier Us Appliance Solutions, Inc. Methods for detecting fan anomalies with built-in usage and sensory data
CN112860500B (zh) * 2021-02-22 2024-03-22 四川腾盾科技有限公司 一种多余度飞机管理计算机板卡上电自检测方法
CN115982057B (zh) * 2023-03-02 2023-06-09 杭州协能科技股份有限公司 程序指针故障检测方法

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Also Published As

Publication number Publication date
EP3290558C0 (fr) 2023-07-19
EP3290558A4 (fr) 2019-04-10
JP6697483B2 (ja) 2020-05-20
KR20180013898A (ko) 2018-02-07
EP3290558A1 (fr) 2018-03-07
WO2016173353A1 (fr) 2016-11-03
CN106149284B (zh) 2019-04-26
CN106149284A (zh) 2016-11-23
JP2018514306A (ja) 2018-06-07
US20180135224A1 (en) 2018-05-17

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