CN104216304A - Method for improving reliability of cache data of household appliances - Google Patents

Abstract

The invention discloses a method for improving the reliability of home appliance cache data. The method includes: A. Setting the running state requirement item to be saved, dividing the memory for saving the program control running state into a plurality of storage areas, and according to the setting Set the content and store the running status data in one of the storage areas in turn; B. When the device is powered on again, perform an initialization operation first; C. Read the status data of the current storage area of the memory, and then perform step D; D 1. Determine whether the running state data is normal; if normal, then execute step E; otherwise, point the read target to the previous storage area, and then execute step C; E. Restore the running state of the device before power-off according to the current state data. By adopting the method of the invention, it is possible to overcome the defect that the control board program stores and writes data errors when the power supply is unstable, and improves the reliability of the cached data.

Description

A Method for Improving the Reliability of Home Appliance Cache Data

technical field

The invention relates to the application field of household appliances, in particular to a method for improving the reliability of cached data of household appliances.

Background technique

The power-off memory of electronic equipment, also called power-off compensation or power-off recovery, is an effective measure to restore the current state of the equipment before power-off after the control board is powered off and on again. Its principle is mainly to store the setting and state data in the memory during the operation of the equipment, and the process is shown in Figure 1A.

When the device is powered off and then powered on again, first read the data in the memory to restore the previous state: if the data in the memory is normal, restore the current state before the power failure; if the data is abnormal, restore to the state of the device Original state. This process is shown in Figure 1B.

However, if the device is in an unsatisfactory operating environment, for example, when the power supply is unstable, the control board of the device will fail to store and write data, which will cause the device to fail to restore the state when the power is turned off. During the operation of existing home appliances under the control of the program, if the state changes, the current state will be written into the memory at any time. When the device is powered off and then powered on, it will first read the data stored in the memory. However, if a power failure occurs when writing data, the data will be incomplete, and the data read when the power is turned on again will not be correct. At this time, if the data is used to restore the state before the power failure, it will cause An error occurred, and the device state before the power failure could not be restored correctly.

Contents of the invention

In view of this, the main purpose of the present invention is to provide a method for improving the reliability of cached data in household appliances, which can overcome the defect of error in storing and writing data in the control board program when the power supply is unstable, so as to improve the reliability of cached data.

In order to achieve the above object, technical solution of the present invention is achieved in that way:

A method for improving the reliability of home appliance cache data, the method comprising:

A. Set the running state requirement item to be saved, divide the memory used to save the program control running state into multiple storage areas, and store the running state data in one of the storage areas in turn according to the setting content;

B. When the device is powered on again, the initialization operation is performed first;

C. Read the state data of the current storage area of the memory, and then execute step D;

D. Determine whether the running status data is normal; if normal, execute step E; otherwise, point the read target to the previous storage area, and then execute step C;

E. According to the current state data, restore the operating state of the device before power failure.

Wherein: the household appliances mainly include television sets, washing machines, refrigerators, air conditioners, electric cookers, electric ovens and microwave ovens.

The number of storage areas of the memory is greater than two.

When storing the equipment operating state data into the storage area of the memory, it is stored in chronological order or randomly.

When there is no free space in the storage area of the memory, the storage area where the state data is stored earliest is overwritten with the current operation state data to be written according to the time sequence of storing the operation state data.

In step D, it is judged whether the operation state data is normal, specifically: whether the device operation state data written before the device is powered off is complete.

The method for improving the reliability of home appliance cache data provided by the present invention has the following advantages:

The household appliance adopting the method of the present invention, by adding a plurality of storage areas in the existing memory, saves the equipment operation state data at different time points, and can recover the most ideal complete cache data through logical judgment after power on again, which can The probability of power-off memory error is greatly reduced, thereby improving the reliability of cached data.

Description of drawings

FIG. 1A is a schematic diagram of the process of storing state data in a memory in an existing electronic device;

Fig. 1B is a schematic diagram of the process of restoring the state of the device according to the state data shown in Fig. 1A for the existing electronic device;

FIG. 2A is a schematic diagram of the process of writing cached data into the positive sequence rotation writing area by the household appliance of the present invention;

FIG. 2B is a schematic diagram of the process of restoring the state of the home appliance before the power failure by utilizing the cached data shown in FIG. 2A according to the present invention.

Detailed ways

The method of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments of the present invention.

The core idea of the method of the present invention is to separately store and back up the cached data of the same functional structure, that is, the status data, in different time points in the operating status of the equipment. In this way, the work of power-off memory is to store the cached data in the storage area. After power-on, first read the state data of the corresponding area and then set the state according to the data, but if the power is off when the data is written, then If data writing fails, the data stored in the entire storage area will be incomplete. By adding a few more storage areas, the most ideal complete cache data can be recovered through logical judgment after power-on, which greatly increases the probability of power-off memory errors. reduce.

FIG. 2A is a schematic diagram of the process of writing cached data into the positive sequence rotation writing area by the household appliance of the present invention. As shown in Figure 2A, the process includes:

Step 201: Set the running status requirement items of the household appliances to be saved.

Here, the home appliances mainly include televisions, washing machines, refrigerators, air conditioners, rice cookers, electric ovens, microwave ovens, and the like. The operating status requirement item to be saved, if it is for a washing machine, can be the working mode of the washing machine set automatically or manually, such as the working sequence and duration of soaking, washing, dehydrating, drying, etc. For refrigerators, it can be the temperature setting of the refrigerator compartment and the freezer compartment. If it is a microwave oven, it can be a set working mode, such as light wave, microwave or light wave + microwave mixed mode, and it can also be a current working state, such as thawing, cooking, grilling, etc. If it is a rice cooker, it can be a preset time to start work, or it can be a rice cooking mode, such as stewing soup, cooking porridge, steaming rice, etc.

Step 202: Divide the memory for storing the running state of the program control into multiple storage areas, and sequentially store the running state data into one of the storage areas according to the setting content.

Here, the number of the storage areas is greater than two. When storing the running state data into the plurality of storage areas, it can be stored in a certain order or randomly. When storing the running status data, it can be written into the storage area according to a certain preset time interval (such as every 2 minutes/time). The running status data currently to be written overwrites the storage area where the status data is stored earliest.

FIG. 2B is a schematic diagram of the process of restoring the state of the home appliance before the power failure by utilizing the cached data shown in FIG. 2A according to the present invention. As shown in Figure 2B, the process includes:

Step 203: Perform an initialization operation when the device is powered on again.

Step 204: read the status data of the current storage area of the memory, and then execute step 205.

Step 205: Determine whether the running status data is normal; if normal, execute step 206; otherwise, point the read target to the previous storage area, and then execute step 204.

Here, whether the data is normal may refer to whether the device operation status data written before the device is powered off is complete.

Step 206: Restore the operating state of the device before the power failure according to the current state data, and then end the restoration process.

However, this method uses multiple storage areas to store data sequentially during storage. After power-on, it is judged whether the data in multiple areas is complete. If it is complete, the latest data is used. If it is incomplete, the previous stored data is used. . For example, in the case of only two storage areas, after power-on, it is first judged whether the data in the two areas are complete, if complete, the latest data is used, and if not, the previous stored data is used.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention.

Claims (6)

1. improve a method for the data cached reliability of household electrical appliances, it is characterized in that, the method comprises:

A, set running status requirement item to be saved, the storer being used for save routine controlling run state marked off multiple storage area, according to setting content respectively successively by running state data stored in one of them storage area;

B, when equipment re-powers, first carry out initialization operation;

C, read the status data in the territory, current memory area of described storer, then perform step D;

D, judge that whether running state data is normal; If normal, then perform step e; Otherwise, the previous storage area of target directing will be read, then perform step C;

E, according to the running status before current status data restorer power down.

2. improve the method for the data cached reliability of household electrical appliances according to claim 1, it is characterized in that described household electrical appliances mainly comprise televisor, washing machine, refrigerator, air-conditioning, electric cooker, electric oven and micro-wave oven.

3. improve the method for the data cached reliability of household electrical appliances according to claim 1, it is characterized in that, the quantity of the storage area of described storer is greater than 2.

4. improve the method for household electrical appliances data cached reliabilities according to claim 3, it is characterized in that, during by the storage area of equipment running status data stored in described storer, in chronological sequence order stored in or at random stored in.

5. improve the method for the data cached reliability of household electrical appliances according to claim 4, it is characterized in that, when the storage area of described storer is without free space, by the time order and function stored in running state data, cover stored in the storage area the earliest stored in status data by current running state data to be written.

6. improve the method for the data cached reliability of household electrical appliances according to claim 1, it is characterized in that, judge described in step D that whether running state data is normal, be specially: before device looses power, whether the equipment running status data of write are complete.