CN2556837Y - Power-off holding circuit for small domestic electrical equipment controller - Google Patents
Power-off holding circuit for small domestic electrical equipment controller Download PDFInfo
- Publication number
- CN2556837Y CN2556837Y CN 02226031 CN02226031U CN2556837Y CN 2556837 Y CN2556837 Y CN 2556837Y CN 02226031 CN02226031 CN 02226031 CN 02226031 U CN02226031 U CN 02226031U CN 2556837 Y CN2556837 Y CN 2556837Y
- Authority
- CN
- China
- Prior art keywords
- power
- mcu
- diode
- small appliance
- capacitor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Power Sources (AREA)
Abstract
The utility model relates to a power-fail retaining circuit with a small appliance controller, comprising a diode V1 which is connected in series at the power input end of the controller MCU, and the anode of the diode which is connected with the power input of the MCU is connected with a capacitor, and the anode of the capacitor is connected with a ground end that controls the MCU; when the power voltage of the small appliance is lower than a certain voltage, a clock vibration source stops vibrating, and the MCU stops working, however, a register and a data memory in the small appliance can store the data under a lower voltage, then a proper software process is added to realize the power-fail memory function of the small appliance, and the utility model facilitates the small appliance to go on working in a power- off working state when the electricity comes again, so as to lead the small appliance to work in a best working state and keep the simple structure of the circuit and the low cost.
Description
Technical field
The utility model relates to the small household appliances control device, is specifically related to a kind of small household appliances control device that makes at work after the sudden power, can continue the controller power-down retaining circuit of former operating state when reworking.
Background technology
In some intelligent small household electrical appliances design of Controller of (such as fuzzy electric cooker, washing machine), to consider the memory function after main electricity (civil power) outage usually, after incoming call so that the preceding operating state that can then have a power failure works on.If but select for use lithium battery to preserve the back-up source of data in outage as controller, and can increase cost undoubtedly, influence the competitiveness of product on market.
Summary of the invention
The technical problems to be solved in the utility model is, a kind of small household appliances controller power-down retaining circuit is provided, and can guarantee small household appliances after outage, and when sending a telegram here, the work when small household appliances can be proceeded to interrupt is to keep the continuity of small household appliances work again.
The technical scheme that the utility model provides is, construct a kind of small household appliances controller power-down retaining circuit, the diode V1 that comprises the power input that is serially connected in MCU in the described controller, the negative pole of described diode is connected with the power input of MCU, the negative pole end of described diode also is connected with capacitor C1, and the negative pole of capacitor C1 is connected with the earth terminal of control MCU.
At above-mentioned small household appliances controller power-down retaining circuit, the model of described diode can be selected 1N60 type diode.
In above-mentioned small household appliances controller power-down retaining circuit, described capacitor volume scope may be selected to be 1000-3000uF.
In above-mentioned small household appliances controller power-down retaining circuit, described capacitor volume is 2200uF.
Implement the small household appliances controller power-down retaining circuit that the utility model provides, in former control circuit, increase an electrochemical capacitor, after the supply voltage of small household appliances is lower than a certain voltage, the clock oscillation source just can the failure of oscillations, MCU promptly can quit work, yet register that it is inner and data storage only need lower voltage just can preserve wherein data, add appropriate software and handle the function of the power-failure memory that can realize small household appliances, can make small household appliances after sending a telegram here again, can the operating state when outage connect the work that continues, make small household appliances be operated in optimum Working, holding circuit is simple in structure, and cost is low.
Description of drawings
Fig. 1 is the circuit theory schematic diagram of the utility model small household appliances controller power-down retaining circuit.
Embodiment
Experimental results show that, the MCU that makes for the CMOS technology that adopts low-power consumption, after its supply voltage was lower than a certain voltage, the clock oscillation source just can the failure of oscillations, MCU promptly can quit work, yet its inner register and data storage only need lower voltage just can preserve wherein data.
Keep principle according to above-mentioned power down, the utility model provides outage holding circuit as shown in Figure 1, power input at control MCU is serially connected with diode V1, the negative pole of diode is connected with the power input of MCU, the negative pole end of diode also is connected with capacitor, and the negative pole of capacitor is connected with the earth terminal of control MCU.
The operation principle of circuit: under the normal condition, the 5V voltage that is obtained by transformer, current rectifying and wave filtering circuit and three-terminal voltage-stabilizing circuit provides working power also electrochemical capacitor C1 to be charged simultaneously through diode V1 to MCU.Have no progeny in main electricity, the electric energy of go up being stored by C1 is kept the data in the register and data storage among the MCU.
The characteristic of the unilateal conduction of diode V1 guarantees that in outage the electric energy on the capacitor C 1 is only to the MCU power supply, to prolong memory time.Diode should select for use the little pig diode of forward voltage drop (as; IN60 etc.), the time of memory is by the amount of capacity of electric capacity and factors such as the power consumption decision of MCU.
In above-mentioned holding circuit, also must import corresponding control programs and could realize the maintenance effect, after main electricity recovers, MCU will be resetted by electrify restoration circuit.Work for the operating state before system can then be had a power failure, at first should carry out validity test to register among the MCU and the data in the data storage earlier, whether these data of the section of declaring go wrong because of the overlong time that has a power failure (surpassing the time of establishing note).In the data storage area, set several verification unit for this reason, during each data memory area initialization several specific checking datas (as: oaah, obbh, occh, oddh) are write (these verification unit should disperse to be arranged in the diverse location of whole storage area) in these verification unit as far as possible.Behind each electrification reset; in initialize routine, earlier the data in these verification unit are detected; see whether all equate with the checking data that write originally; have only all checking datas of working as all to equate; could prove outage by electric capacity in the data of electric energy protection do not have confusion, can use work before data continue to have a power failure with these.If these data that are used for verification have one to change, the work before then should abandoning having a power failure, and whole memory field is carried out the work of moving beginningization again.
Can realize the function of power-failure memory effectively by the design of above hardware and software.If select big capacity (scope of choosing of electric capacity can be 1000-3000uF, as selects capacitance for use more than 2200uF) electric capacity for use, can make extend to a few hours memory time.
Claims (4)
1, a kind of small household appliances controller power-down retaining circuit, it is characterized in that, the diode V1 that comprises the power input that is serially connected in MCU in the described controller, the negative pole of described diode V1 is connected with the power input of MCU, the negative pole end of described diode V1 also is connected with capacitor C1, and the negative pole of capacitor C1 is connected with the earth terminal of control MCU.
2, according to the described small household appliances controller of claim 1 power-down retaining circuit, it is characterized in that the model of described diode V1 is 1N60.
According to the described small household appliances controller of claim 1 power-down retaining circuit, it is characterized in that 3, the range of capacity of described capacitor C1 is 1000-3000uF.
4, according to the described small household appliances controller of claim 1 power-down retaining circuit, it is characterized in that the capacity 2200uF of described capacitor C1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02226031 CN2556837Y (en) | 2002-03-01 | 2002-03-01 | Power-off holding circuit for small domestic electrical equipment controller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02226031 CN2556837Y (en) | 2002-03-01 | 2002-03-01 | Power-off holding circuit for small domestic electrical equipment controller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2556837Y true CN2556837Y (en) | 2003-06-18 |
Family
ID=33703118
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02226031 Expired - Fee Related CN2556837Y (en) | 2002-03-01 | 2002-03-01 | Power-off holding circuit for small domestic electrical equipment controller |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2556837Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101847894A (en) * | 2010-03-31 | 2010-09-29 | 惠州市德赛西威汽车电子有限公司 | Power supply circuit for chip of automobile audio |
| CN102061592A (en) * | 2010-10-31 | 2011-05-18 | 合肥荣事达洗衣设备制造有限公司 | Fully automatic washing machine instantaneous power off memory circuit and processing method thereof |
| CN105442288A (en) * | 2014-06-03 | 2016-03-30 | 漳州灿坤实业有限公司 | Steam iron steam release control method |
| CN109900003A (en) * | 2017-12-08 | 2019-06-18 | 丹佛斯（天津）有限公司 | Fluid injection control system and fluid circulating system |
| CN116155113A (en) * | 2023-04-14 | 2023-05-23 | 陕西中科天地航空模块有限公司 | ZVS control type module power supply for electromagnetic interference suppression |
-
2002
- 2002-03-01 CN CN 02226031 patent/CN2556837Y/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101847894A (en) * | 2010-03-31 | 2010-09-29 | 惠州市德赛西威汽车电子有限公司 | Power supply circuit for chip of automobile audio |
| CN101847894B (en) * | 2010-03-31 | 2012-12-26 | 惠州市德赛西威汽车电子有限公司 | Power supply circuit for chip of automobile audio |
| CN102061592A (en) * | 2010-10-31 | 2011-05-18 | 合肥荣事达洗衣设备制造有限公司 | Fully automatic washing machine instantaneous power off memory circuit and processing method thereof |
| CN105442288A (en) * | 2014-06-03 | 2016-03-30 | 漳州灿坤实业有限公司 | Steam iron steam release control method |
| CN109900003A (en) * | 2017-12-08 | 2019-06-18 | 丹佛斯（天津）有限公司 | Fluid injection control system and fluid circulating system |
| US11085661B2 (en) | 2017-12-08 | 2021-08-10 | Danfoss (Tianjin) Ltd. | Fluid injection control system and fluid circulation system |
| CN116155113A (en) * | 2023-04-14 | 2023-05-23 | 陕西中科天地航空模块有限公司 | ZVS control type module power supply for electromagnetic interference suppression |
| CN116155113B (en) * | 2023-04-14 | 2024-04-30 | 陕西中科天地航空模块有限公司 | ZVS control type module power supply for electromagnetic interference suppression |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103809492B (en) | One-touch multifunctional control circuit and wearing electronic product | |
| CN201608557U (en) | Power supply circuit for mobile phone | |
| CN206649317U (en) | Portable electric appts and the on/off circuit for it | |
| CN202309653U (en) | Power-down delay memory circuit for electric appliance | |
| CN103138376A (en) | Power switching circuit and power switching method thereof | |
| CN109840006A (en) | Main control chip power supply unit | |
| CN201780549U (en) | Multi-status switch control device and system | |
| CN2556837Y (en) | Power-off holding circuit for small domestic electrical equipment controller | |
| CN204304532U (en) | A kind of computer and the feed circuit based on its USB interface | |
| CN206362841U (en) | Long-life intelligent electric energy meter based on super capacitor and button-shaped lithium-manganese cell | |
| CN101403943A (en) | Intelligent computer power supply integration system | |
| CN201813355U (en) | Single chip-based switch circuit with low stand-by power consumption | |
| CN105262183A (en) | Power-saving type USB charging structure | |
| CN203278309U (en) | Circuit and device for switching on/off charging battery | |
| CN205846852U (en) | A kind of ups power device | |
| CN2859901Y (en) | Household electrical appliance control device | |
| CN208739094U (en) | Trigger-type low power consumption switch circuit | |
| CN201570898U (en) | Power failure data protection circuit | |
| CN203104016U (en) | Power supply circuit of remote controller and air-conditioning system having the same | |
| CN115498731A (en) | BMS state switching system | |
| CN113541263A (en) | Portable equipment external power supply and battery power supply automatic switching circuit | |
| CN203311201U (en) | Zero standby power consumption control circuit for household appliance | |
| CN202496004U (en) | Reset circuit and television | |
| CN205725691U (en) | A kind of soy bean milk making machine powder down memory circuit | |
| CN112711320A (en) | Power switching system and method, computer readable storage medium and processor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |