CN206532975U - One kind power-off reminiscences - Google Patents
One kind power-off reminiscences Download PDFInfo
- Publication number
- CN206532975U CN206532975U CN201720071033.4U CN201720071033U CN206532975U CN 206532975 U CN206532975 U CN 206532975U CN 201720071033 U CN201720071033 U CN 201720071033U CN 206532975 U CN206532975 U CN 206532975U
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- CN
- China
- Prior art keywords
- electrical appliance
- current sensor
- chip microcomputer
- power
- reminiscences
- 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
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Abstract
Reminiscences is powered off the utility model discloses one kind, the power-off reminiscences includes electrical appliance socket, the plug being connected with electrical appliance socket, current sensor, single-chip microcomputer, indicator lamp and buzzer, the current sensor connects with electrical appliance socket, the current sensor is used for the signal acquisition of electrical equipment, the output port of the current sensor connects with the input port of single-chip microcomputer, and the output port of the single-chip microcomputer is connected with indicator lamp and buzzer respectively.The utility model is connected between electrical appliance attaching plug and power outlet, is judged using single-chip microcomputer, both user can in time be reminded after electrical appliance power-off, it is timely to electrical appliance to handle, optimal Consumer's Experience is obtained, user can be allowed to pull up plug in time again, prevent potential safety hazard.
Description
Technical field
The utility model is related to power-off prompting field, more particularly to a kind of power-off reminiscences.
Background technology
At present, existing most of electrical appliances only have timing power-off function, and some electrical equipment is after timing without prompting
Function, some electrical equipment only once prompting function after timing, and under normal circumstances, people can do separately in electrical work
Outer work, when electrical appliance power cut-off, people ignore the working condition of electrical appliance due to busy, so as to miss optimal
Experience state, such as after using hot-water bottle, micro-wave oven and washing machine electrical equipment, then hot water when being drunk water for a long time after power-off
Become cold water, clothes crumple can be made by carrying out the clothing that dries in the air after power-off for a long time., can if noticing the working condition of electrical appliance always
Waste the precious time.
The content of the invention
The utility model purpose is that the defect existed for prior art provides a kind of power-off reminiscences, can both be reminded
User handles the electrical equipment after power-off in time, obtains optimal Consumer's Experience, user can be allowed to pull up plug in time again, prevent safety
Hidden danger.
The utility model to achieve the above object, is adopted the following technical scheme that：One kind power-off reminiscences, the power-off is reminded
Device includes electrical appliance socket, the plug being connected with electrical appliance socket, current sensor, single-chip microcomputer, indicator lamp and buzzer, institute
State current sensor with electrical appliance socket to connect, the current sensor is used for the signal acquisition of electrical equipment, the electric current is passed
The output port of sensor connects with the input port of single-chip microcomputer, the output port of the single-chip microcomputer respectively with indicator lamp and buzzer
It is connected.
It is preferred that, current sampling circuit, the current sampling circuit bag are provided between the current sensor and single-chip microcomputer
RC filter circuits, voltage follower circuit and voltage comparator circuit are included, the voltage follower circuit includes voltage follower
LM124, the electrode input end of the voltage follower LM124 is connected with filter circuit, and the voltage comparator circuit is by voltage ratio
Constituted compared with device LM311 and resistance R5, the electrode input end of the voltage comparator LM311 is connected with voltage follower circuit, passed through
Voltage comparator LM311 realizes Zero-cross comparator, and the resistance R5 suppresses the concussion of interference and signal.
The beneficial effect that the utility model reaches is：The utility model is connected with electrical appliance plug, both can be in electrical appliance
User is reminded in time after power-off, it is timely to electrical appliance to handle, optimal Consumer's Experience is obtained, user can be allowed again
Plug is pulled up in time, prevents potential safety hazard.
Brief description of the drawings
Fig. 1 is module diagram of the present utility model；
Fig. 2 is the circuit theory diagrams of the time relay in the utility model.
Embodiment
It is new to this practicality with reference to the accompanying drawings and detailed description in order to deepen to understanding and cognition of the present utility model
Type makes further instructions and introduced.
One kind power-off reminiscences, the power-off reminiscences include electrical appliance socket, be connected with electrical appliance socket plug,
Current sensor, single-chip microcomputer, indicator lamp and buzzer, the current sensor connect with electrical appliance socket, the current sense
Device is used for the signal acquisition of electrical equipment, and the output port of the current sensor connects with the input port of single-chip microcomputer, described
The output port of single-chip microcomputer is connected with indicator lamp and buzzer respectively.
The power-off reminiscences is connected between electrical appliance attaching plug and power outlet, is judged using single-chip microcomputer.
It is preferred that scheme be, between the current sensor and single-chip microcomputer be provided with current sampling circuit, the current sample
Circuit include RC filter circuits, voltage follower circuit and voltage comparator circuit, the voltage follower circuit include voltage with
With device LM124, voltage follower LM124 plays buffering, isolation to its front stage circuit, improves load capacity, the electricity
Pressure follower LM124 electrode input end is connected with filter circuit, and the voltage comparator circuit is by voltage comparator LM311 and electricity
R5 compositions are hindered, the electrode input end of the voltage comparator LM311 is connected with voltage follower circuit, passes through voltage comparator
LM311 realizes Zero-cross comparator, and the resistance R5 suppresses the concussion of interference and signal.
The filter circuit can reduce system and the phase error of power network, filter out the burr interference of power network, the filtering
The delay that circuit is caused can be compensated in a program.The voltage comparator circuit realizes Zero-cross comparator by voltage comparator LM311, together
When devise a stagnant ring link resistance R5 suppress interference and signal concussion, for comparing whether detected circuit has electric current
In the presence of.
Operation principle of the present utility model is：On the electrical appliance socket for appliance plug being inserted in power-off reminiscences, power-off is carried
Awake device is inserted on power supply, and when electrical appliance works, current sensor sends current signal to current sampling circuit, current sample
Circuit is obtained after signal, sends current signal to single-chip microcomputer, and single-chip microcomputer judges that electrical appliance works, and working power indicates green
Lamp.When electrical appliance is stopped, current sensor does not have a current signal, single-chip microcomputer judge no electric current by when start timing,
When elapsed time clock reaches 2 minutes, power supply indicator is designated as red light, and the buzzer of power-off reminiscences is carried at intervals of two minutes
Wake up, given the clothes an airing until user untill pulling up power supply.The power-off alarm set one be remind the timely airing clothes of user, two and
When pull up attaching plug, prevent potential safety hazard, form good consumption habit.This equipment can be used for automatically powering off electric water
Kettle, the power-off of the household electrical appliances such as micro-wave oven, washing machine is reminded.
Preferred embodiment of the present utility model is the foregoing is only, it is all in this practicality not to limit the utility model
Within new spirit and principle, any modification, equivalent substitution and improvements made etc. should be included in guarantor of the present utility model
Within the scope of shield.
Claims (2)
1. one kind power-off reminiscences, it is characterised in that the power-off reminiscences includes electrical appliance socket, is connected with electrical appliance socket
Plug, current sensor, single-chip microcomputer, indicator lamp and the buzzer connect, the current sensor connects with electrical appliance socket, described
Current sensor is used for the signal acquisition of electrical equipment, the output port of the current sensor and the input port phase of single-chip microcomputer
Connect, the output port of the single-chip microcomputer is connected with indicator lamp and buzzer respectively.
2. a kind of power-off reminiscences according to claim 1, it is characterised in that between the current sensor and single-chip microcomputer
Provided with current sampling circuit, the current sampling circuit includes RC filter circuits, voltage follower circuit and voltage comparator circuit, institute
Stating voltage follower circuit includes voltage follower LM124, voltage follower LM124 electrode input end and filtered electrical
Road is connected, and the voltage comparator circuit is made up of voltage comparator LM311 and resistance R5, and the voltage comparator LM311 is just
Pole input is connected with voltage follower circuit, Zero-cross comparator is realized by voltage comparator LM311, and the resistance R5 suppresses dry
Disturb the concussion with signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720071033.4U CN206532975U (en) | 2017-01-20 | 2017-01-20 | One kind power-off reminiscences |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720071033.4U CN206532975U (en) | 2017-01-20 | 2017-01-20 | One kind power-off reminiscences |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206532975U true CN206532975U (en) | 2017-09-29 |
Family
ID=59919135
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720071033.4U Expired - Fee Related CN206532975U (en) | 2017-01-20 | 2017-01-20 | One kind power-off reminiscences |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206532975U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114613108A (en) * | 2020-12-09 | 2022-06-10 | 贵州振华群英电器有限公司（国营第八九一厂） | Low-voltage direct-current power supply power-off alarm |
-
2017
- 2017-01-20 CN CN201720071033.4U patent/CN206532975U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114613108A (en) * | 2020-12-09 | 2022-06-10 | 贵州振华群英电器有限公司（国营第八九一厂） | Low-voltage direct-current power supply power-off alarm |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170929 Termination date: 20180120 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |