CN102885603A - Power-failure processing circuit of dishwasher and control method thereof - Google Patents
Power-failure processing circuit of dishwasher and control method thereof Download PDFInfo
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- CN102885603A CN102885603A CN2012103879878A CN201210387987A CN102885603A CN 102885603 A CN102885603 A CN 102885603A CN 2012103879878 A CN2012103879878 A CN 2012103879878A CN 201210387987 A CN201210387987 A CN 201210387987A CN 102885603 A CN102885603 A CN 102885603A
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Abstract
The invention relates to a power-failure processing circuit of a dishwasher and a control method thereof. The power-failure processing circuit comprises a data storage device and an input power supply, wherein the data storage device is used for storing washing state parameters of the dishwasher, and the input power supply provides direct-current working voltage for the data storage device and the following circuits and devices. The power-failure processing circuit is characterized by also comprising a main controller and a connecting circuit, wherein the main controller is electrically connected with the data storage device through the connecting circuit, so that when the dishwasher is powered on, the main controller can read the washing state parameters from the data storage device and judge whether the washing state before power failure is needed to be restored or not, and can write the washing state parameters into the data storage device during washing of the dishwasher, and signals processed by the main controller are output to a load execution unit. The power-failure processing circuit of the dishwasher has the advantages of simple structure, low hardware cost, capability of shortening the washing time, energy conservation and the like.
Description
Technical field
The invention belongs to the dish-washing machine control field, be specifically related to a kind of dish-washing machine power down process circuit and control method, belong to dish-washing machine power down process control improvement technology.
Background technology
Dish-washing machine is taked corresponding process control method for the powered-off fault event in the washing process, makes dish-washing machine after re-powering, and can continue washing process, and reaches the requirement of washing (-)off properties.This processing mode is that dish-washing machine is in a kind of embodiment of the aspects such as washing Energy Efficiency Ratio, machine intelligence and user satisfaction;
At present, the washing process of dish-washing machine can be divided into four-stage usually: pre-wash stage, the master washes the stage rinse stage, and drying stage.And existing dish-washing machine is to the powered-off fault event in the washing process, common way is after dish-washing machine powers on, and again begins washing from pre-wash stage, if dish-washing machine is in the drying stage power down, begin washing from pre-wash stage again after powering on, this stage is finished dishwashing detergent substantially usually.This mode is reducing water consumption, reduces power consumption and save the wash time aspect to have much room for improvement.
Summary of the invention
The object of the invention is to consider the problems referred to above and propose a kind of dish-washing machine power down process circuit and control method, its circuit structure is simple, hardware cost is low, in dish-washing machine washing process, utilize data storage to preserve washing parameter, in the abnormal power down, after re-powering, the washing stage that dish-washing machine can continue before the power down is continued washing, thereby the shortening wash time reaches energy-conservation order.
In order to achieve the above object, the technical scheme of dish-washing machine power down process circuit of the present invention is: comprise data storage and the input power of storage dish-washing machine washing state parameter, described input power provides direct-current working volts for data storage and following circuit and device; Characterized by further comprising master controller and connecting circuit, wherein said master controller is electrically connected with data storage by connecting circuit, thereby make master controller when dish-washing machine powers on, can from data storage, read the washing state parameter and judge whether need to recover power down before the washing state, in the washing state parameter data writing memory, the signal after master controller will be processed is exported to the load performance element in dish-washing machine washing process.
The model of described master controller is UPD78F8513A or UPD78F0524A.
The model of described data storage is ST24C01 or ST24C02.
Described connecting circuit comprises the first resistance, the second resistance and electric capacity, an end of wherein said the first resistance and input power+the 5V power end is electrically connected, and an other end is electrically connected with the 13rd pin of master controller and the 5th pin of data storage; One end of described the second resistance and input power+the 5V power end is electrically connected, and an other end is electrically connected with the 14th pin of master controller and the 6th pin of data storage; Described electric capacity one end and input power+the 5V power end is electrically connected, an other end is electrically connected with the ground end with input power with the 1st, 2,3,4 pins of data storage, the 7th pin of data storage is connected with the ground end of input power, the 8th pin of data storage and input power+the 5V power end is connected.
The control method of dish-washing machine power down process circuit is characterized in that comprising the following stated step:
Step 1: the processing of power-up state, after being that the dish-washing machine plugged powers on, master controller reads washing state parameter and data check code and is kept in the data storage area of master controller from data storage, data storage is emptied operation, for next time wash away the electric treatment reserved storage space; Then the master controller washing state parameter that will read carries out verification, the correctness of check reading out data, its process is: the check value that calculates the washing state parameter, and compare judgement with the data check code of master controller storage, if two numerical value are unequal, in the read-write operation process of expression master controller to the data memory loss of data has occured, master controller does not carry out power-down state to be processed this, and dish-washing machine enters holding state; If two numerical value equate, then judge the power-down state processing, at first judge washing power down step Tb value in the washing state parameter, the Tb value is nonnegative integer, if the Tb value equals 0, the washing process power loss event does not occur in the expression dish-washing machine before powering on, do not need power down process, and dish-washing machine enters holding state; Otherwise, if the Tb value〉and 0, before the expression dish-washing machine powered on, the washing process power down occured, master controller enters the power-down state processing and recovers the washing state parameter, and dish-washing machine enters the washing state, and gives current washing sequential step t, i.e. t=Tb with Tb value assignment;
Step 2: washing state processing, after being that dish-washing machine enters the washing state, master controller at first carries out data lookup table according to washing procedure title P, data form is stored in the ROM district of master controller, the step number T5 of the step number Ta of each the washing stage first step that draws washing procedure title P of tabling look-up and the final step of drying stage, a ∈ [Isosorbide-5-Nitrae] and a round numbers; Then current washing sequential step t is compared with the step number Ta of each washing stage first step respectively, if all unequal, do not wash the state parameter stores processor; Wherein any one equates if t is with Ta, represents that current dish-washing machine worked a new washing procedure stage, needs to preserve the washing state parameter, and will wash in the state parameter data writing memory; After below relatively finishing, enter rinsing maching load performance element, at first table look-up in the ROM district of master controller according to current washing sequential step t, find the load that current step need to be opened execution; After executing above processing, load according to current dish-washing machine execution, judge whether current washing step is finished, if finish, then current washing sequential step t+1 enters next washing sequential step, and what for example current washing step was carried out is heating tube, washing step is finished according to being that water temperature reaches preset value, and then current washing step is finished; After judging end, enter the washing done state and process;
Step 3: the washing done state is processed, and is the step number T5 of the final step of current washing sequential step t and drying stage is compared; If t〉T5, then represent washing procedure P and finish, dish-washing machine enters the washing done state; Master controller will wash state parameter and initialize, and return step 1; If t≤T5 represents dish-washing machine washing process and also do not finish, reenter step 2.
Described washing state parameter includes but not limited to washing procedure P and washing power down step Tb, described washing procedure P is used for determining the washing course of work of dish-washing machine, and washing procedure P is divided into four washing stages, i.e. pre-wash stage, the master washes the stage rinse stage and drying stage.
Described data check code is that a kind of in the communication protocol judges that data transmit correct mode; Described load includes but not limited to washing pump, draining pump, water intaking valve, heating tube, regeneration valve, shunt valve or blower fan.
The present invention's beneficial effect compared with prior art is: because of adopted data memory storage washing state parameter, after the master controller power down, washing parameter is not lost in the data storage, thereby realize can be in washing process the stages power down, can both return to the front washing stage of power down after powering on, realize the continuity washing process, shorten owing to power loss event causes dish-washing machine and wash the extra water in the time course, extra electricity consumption and extra time spent.This control mode makes dish-washing machine have more hommization for the processing of powered-off fault, and intellectuality more can improve the washing Energy Efficiency Ratio.The type selecting scope of master controller is wide, and external hardware is simple in structure, is easy to safeguard, the software control mode is easy to transplant, and is applied widely.Circuit structure is simple, and hardware cost is low.
Description of drawings
Fig. 1 is structured flowchart of the present invention;
Fig. 2 is the circuit theory diagrams of the embodiment of the invention;
Fig. 3 is the control process chart of the embodiment of the invention;
Fig. 4 is the power-up state process chart of the embodiment of the invention;
Fig. 5 is the washing state processing flow chart of the embodiment of the invention;
Fig. 6 is the washing done state process chart of the embodiment of the invention.
The specific embodiment
The invention will be further described below in conjunction with drawings and Examples.
As shown in Figure 1, a kind of dish-washing machine power down process circuit comprises that the storage dish-washing machine washs data storage 1 and the input power 4 of state parameter, and described input power 4 reaches following circuit for data storage 1 and device provides direct-current working volts; Characteristics of the present invention are also to comprise master controller 3 and connecting circuit 2, wherein said master controller 3 is electrically connected with data storage 1 by connecting circuit 2, thereby make master controller 3 when dish-washing machine powers on, can from data storage 1, read the washing state parameter and judge whether need to recover power down before the washing state, in the washing state parameter data writing memory 1, the signal after master controller 3 will be processed is exported to load performance element 5 in dish-washing machine washing process.
In the present embodiment, as shown in Figure 2, the model of described master controller 1 is UPD78F8513A or UPD78F0524A.
In the present embodiment, as shown in Figure 2, the model of described data storage 1 is ST24C01 or ST24C02.
In the present embodiment, as shown in Figure 2, described connecting circuit 2 comprises the first resistance R 1, the second resistance R 2 and capacitor C, one end of wherein said the first resistance R 1 and input power 4+the 5V power end is electrically connected, and an other end is electrically connected with the 13rd pin of master controller 3 and the 5th pin of data storage 1; One end of described the second resistance R 2 and input power 4+the 5V power end is electrically connected, and an other end is electrically connected with the 14th pin of master controller 3 and the 6th pin of data storage 1; Described capacitor C one end and input power 4+the 5V power end is electrically connected, an other end is electrically connected with the ground end with input power 4 with the 1st, 2,3,4 pins of data storage 1, the 7th pin of data storage 1 is connected with the ground end of input power 4, the 8th pin of data storage 1 and input power 4+the 5V power end is connected.
Shown in Fig. 1,3,4,5,6, the control method of dish-washing machine power down process circuit, characteristics of the present invention are to comprise the following stated step:
Step 1: the processing of power-up state, after being that the dish-washing machine plugged powers on, master controller 3 reads washing state parameter and data check code and is kept in the data storage area of master controller 3 from data storage 1, data storage 1 is emptied operation, for next time wash away the electric treatment reserved storage space; Then the master controller 3 washing state parameter that will read carries out verification, the correctness of check reading out data, its process is: the check value that calculates the washing state parameter, and compare judgement with the data check code of master controller 3 storage, if two numerical value are unequal, in the read-write operation process of 3 pairs of data memories 1 of expression master controller loss of data has occured, master controller 3 does not carry out power-down state to this to be processed, and dish-washing machine enters holding state; If two numerical value equate, then judge the power-down state processing, at first judge washing power down step Tb value in the washing state parameter, the Tb value is nonnegative integer, if the Tb value equals 0, the washing process power loss event does not occur in the expression dish-washing machine before powering on, do not need power down process, and dish-washing machine enters holding state; Otherwise, if the Tb value〉and 0, before the expression dish-washing machine powered on, the washing process power down occured, master controller 3 enters the power-down state processing and recovers the washing state parameter, and dish-washing machine enters the washing state, and gives current washing sequential step t, i.e. t=Tb with Tb value assignment;
Step 2: washing state processing, after being that dish-washing machine enters the washing state, master controller 3 at first carries out data lookup table according to washing procedure title P, data form is stored in the ROM district of master controller 3, the step number T5 of the step number Ta of each the washing stage first step that draws washing procedure title P of tabling look-up and the final step of drying stage, a ∈ [1,4] and a round numbers, the step number T1 of the pre-wash stage first step for example, the main step number T2 of the stage first step, the step number of the rinse stage first step of washing
T3, the step number T4 of the drying stage first step; Then current washing sequential step t is compared with the step number Ta of each washing stage first step respectively, if all unequal, do not wash the state parameter stores processor; Wherein any one equates if t is with Ta, represents that current dish-washing machine worked a new washing procedure stage, needs to preserve the washing state parameter, and will wash in the state parameter data writing memory 1; After below relatively finishing, enter rinsing maching load performance element, at first table look-up in the ROM district of master controller 3 according to current washing sequential step t, find the load that current step need to be opened execution; After executing above processing, load according to current dish-washing machine execution, judge whether current washing step is finished, if finish, then current washing sequential step t+1 enters next washing sequential step, and what for example current washing step was carried out is heating tube, washing step is finished according to being that water temperature reaches preset value, and then current washing step is finished; After judging end, enter the washing done state and process;
Step 3: the washing done state is processed, and is the step number T5 of the final step of current washing sequential step t and drying stage is compared; If t〉T5, then represent washing procedure P and finish, dish-washing machine enters the washing done state; Master controller 3 will wash state parameter and initialize, and return step 1; If t≤T5 represents dish-washing machine washing process and also do not finish, reenter step 2.
In the present embodiment, described washing state parameter includes but not limited to washing procedure P and washing power down step Tb, and described washing procedure P is used for determining the washing course of work of dish-washing machine, washing procedure P is divided into four washing stages, be pre-wash stage, the master washes the stage rinse stage and drying stage.
In the present embodiment, described data check code is that a kind of in the communication protocol judges that data transmit correct mode; Described load includes but not limited to washing pump, draining pump, water intaking valve, heating tube, regeneration valve, shunt valve or blower fan.
Claims (7)
1. a dish-washing machine power down process circuit comprises that the storage dish-washing machine washs data storage (1) and the input power (4) of state parameter, and described input power (4) reaches following circuit for data storage (1) and device provides direct-current working volts; Characterized by further comprising master controller (3) and connecting circuit (2), wherein said master controller (3) is electrically connected with data storage (1) by connecting circuit (2), thereby make master controller (3) when dish-washing machine powers on, can from data storage (1), read the washing state parameter and judge whether and to recover the front washing state of power down, in the washing state parameter data writing memory (1), the signal after master controller (3) will be processed is exported to load performance element (5) in dish-washing machine washing process.
2. dish-washing machine power down process circuit according to claim 1, the model that it is characterized in that described master controller (1) is UPD78F8513A or UPD78F0524A.
3. dish-washing machine power down process circuit according to claim 1, the model that it is characterized in that described data storage (1) is ST24C01 or ST24C02.
4. dish-washing machine power down process circuit according to claim 1, it is characterized in that described connecting circuit (2) comprises the first resistance (R1), the second resistance (R2) and electric capacity (C), one end of wherein said the first resistance (R1) and input power (4)+the 5V power end is electrically connected, and an other end is electrically connected with the 13rd pin of master controller (3) and the 5th pin of data storage (1); One end of described the second resistance (R2) and input power (4)+the 5V power end is electrically connected, and an other end is electrically connected with the 14th pin of master controller (3) and the 6th pin of data storage (1); Described electric capacity (C) end and input power (4)+the 5V power end is electrically connected, the 1st, 2,3,4 pins of an other end and data storage (1) with and the ground end of input power (4) be electrically connected, the 7th pin of data storage (1) is connected with the ground end of input power (4), the 8th pin of data storage (1) and input power (4)+the 5V power end is connected.
5. the control method of dish-washing machine power down process circuit according to claim 1 is characterized in that comprising the following stated step:
Step 1: the processing of power-up state, after being that the dish-washing machine plugged powers on, master controller (3) reads washing state parameter and data check code and is kept in the data storage area of master controller (3) from data storage (1), data storage (1) is emptied operation, for next time wash away the electric treatment reserved storage space; Then master controller (3) the washing state parameter that will read carries out verification, the correctness of check reading out data, its process is: the check value that calculates the washing state parameter, and compare judgement with the data check code of master controller (3) storage, if two numerical value are unequal, in the read-write operation process of expression master controller (3) to data memory (1) loss of data has occured, master controller (3) does not carry out power-down state to be processed this, and dish-washing machine enters holding state; If two numerical value equate, then judge the power-down state processing, at first judge washing power down step Tb value in the washing state parameter, the Tb value is nonnegative integer, if the Tb value equals 0, the washing process power loss event does not occur in the expression dish-washing machine before powering on, do not need power down process, and dish-washing machine enters holding state; Otherwise, if the Tb value〉and 0, before the expression dish-washing machine powers on, the washing process power down occured, and master controller (3) enters the power-down state processing and recovers the washing state parameter, and dish-washing machine enters the washing state, and give current washing sequential step t, i.e. t=Tb with Tb value assignment;
Step 2: washing state processing, after being that dish-washing machine enters the washing state, master controller (3) at first carries out data lookup table according to washing procedure title P, data form is stored in the ROM district of master controller (3), the step number T5 of the step number Ta of each the washing stage first step that draws washing procedure title P of tabling look-up and the final step of drying stage, a ∈ [Isosorbide-5-Nitrae] and a round numbers; Then current washing sequential step t is compared with the step number Ta of each washing stage first step respectively, if all unequal, do not wash the state parameter stores processor; Wherein any one equates if t is with Ta, represents that current dish-washing machine worked a new washing procedure stage, needs to preserve the washing state parameter, and will wash in the state parameter data writing memory (1); After below relatively finishing, enter rinsing maching load performance element, at first table look-up in the ROM district of master controller (3) according to current washing sequential step t, find the load that current step need to be opened execution; After executing above processing, load according to current dish-washing machine execution, judge whether current washing step is finished, if finish, then current washing sequential step t+1 enters next washing sequential step, and what for example current washing step was carried out is heating tube, washing step is finished according to being that water temperature reaches preset value, and then current washing step is finished; After judging end, enter the washing done state and process;
Step 3: the washing done state is processed, and is the step number T5 of the final step of current washing sequential step t and drying stage is compared; If t〉T5, then represent washing procedure P and finish, dish-washing machine enters the washing done state; Master controller (3) will wash state parameter and initialize, and return step 1; If t≤T5 represents dish-washing machine washing process and also do not finish, reenter step 2.
6. the control method of dish-washing machine power down process circuit according to claim 5, it is characterized in that described washing state parameter includes but not limited to washing procedure P and washing power down step Tb, described washing procedure P is used for determining the washing course of work of dish-washing machine, washing procedure P is divided into four washing stages, it is pre-wash stage, the master washes the stage rinse stage and drying stage.
7. the control method of dish-washing machine power down process circuit according to claim 5 is characterized in that described data check code is that a kind of in the communication protocol judges that data transmit correct mode; Described load includes but not limited to washing pump, draining pump, water intaking valve, heating tube, regeneration valve, shunt valve or blower fan.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106725177A (en) * | 2015-11-25 | 2017-05-31 | 上海酒店设备股份有限公司 | The power-economizing method of dish-washing machine and the dish-washing machine for making in this way |
| CN107348920A (en) * | 2017-07-27 | 2017-11-17 | 佛山市顺德区美的洗涤电器制造有限公司 | Control method, dish-washing machine and the computer-readable recording medium of dish-washing machine |
| CN107411669A (en) * | 2017-07-26 | 2017-12-01 | 佛山市顺德区美的洗涤电器制造有限公司 | The control method of washing and device and dish-washing machine of dish-washing machine based on cistern water supply |
| CN110037637A (en) * | 2019-03-14 | 2019-07-23 | 佛山市百斯特电器科技有限公司 | A kind of dish-washing machine power down process method |
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| CN1147930A (en) * | 1995-05-23 | 1997-04-23 | 三洋电机株式会社 | Device for controlling table-ware washing-machine |
| JP2002336180A (en) * | 2001-05-16 | 2002-11-26 | Mitsubishi Electric Home Appliance Co Ltd | Dishwasher |
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| CN1147930A (en) * | 1995-05-23 | 1997-04-23 | 三洋电机株式会社 | Device for controlling table-ware washing-machine |
| JP2002336180A (en) * | 2001-05-16 | 2002-11-26 | Mitsubishi Electric Home Appliance Co Ltd | Dishwasher |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106725177A (en) * | 2015-11-25 | 2017-05-31 | 上海酒店设备股份有限公司 | The power-economizing method of dish-washing machine and the dish-washing machine for making in this way |
| CN107411669A (en) * | 2017-07-26 | 2017-12-01 | 佛山市顺德区美的洗涤电器制造有限公司 | The control method of washing and device and dish-washing machine of dish-washing machine based on cistern water supply |
| CN107348920A (en) * | 2017-07-27 | 2017-11-17 | 佛山市顺德区美的洗涤电器制造有限公司 | Control method, dish-washing machine and the computer-readable recording medium of dish-washing machine |
| CN110037637A (en) * | 2019-03-14 | 2019-07-23 | 佛山市百斯特电器科技有限公司 | A kind of dish-washing machine power down process method |
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Effective date of registration: 20220804 Address after: 241000 west side of 3 / F, No.5 office building, new energy and new materials gathering area, Fuzhou Road, Jiangbei District, Wuhu City, Anhui Province Patentee after: Wuhu Midea intelligent kitchen electricity Manufacturing Co.,Ltd. Address before: 528311 Beijiao Town Industrial Park, Shunde District, Foshan City, Guangdong Province Patentee before: FOSHAN SHUNDE MIDEA WASHING APPLIANCES MANUFACTURING Co.,Ltd. |