CN202102043U - Detecting alarm for household appliances - Google Patents
Detecting alarm for household appliances Download PDFInfo
- Publication number
- CN202102043U CN202102043U CN2011201187430U CN201120118743U CN202102043U CN 202102043 U CN202102043 U CN 202102043U CN 2011201187430 U CN2011201187430 U CN 2011201187430U CN 201120118743 U CN201120118743 U CN 201120118743U CN 202102043 U CN202102043 U CN 202102043U
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- power
- detecting
- household appliances
- voltage
- circuit
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Abstract
A detecting alarm for household appliances is characterized by mainly consisting of three portions including a voltage detecting and current detecting module, a power detecting circuit and an alarming circuit. The power detecting circuit consists of a sampling resistor, a threshold setting resistor and an operational amplifier LM3249. After a household service entrance conductor is provided with the detecting alarm, people can trigger the detecting alarm to detect total electricity consumption power of the household appliances when leaving away from a residence, when the total electricity consumption power in the residence is higher than set alarming threshold, the detecting alarm produces alarming sound so that whether people forget to switch off the household appliances in the residence or not can be judged, and purposes of eliminating potential safety hazards caused by the household appliances and reducing electric energy waste are achieved.
Description
Affiliated technical field
The utility model relates to a kind of detection alarm device of household electrical appliance operating position, especially can when people go out, be used for detecting the operating position of household electrical appliance in the family.
Background technology
At present, the intelligence monitoring and controlling device to household electrical appliance has comprised the master system that is used for intelligent monitoring and uses, voltage detection unit and current detecting unit and the power information harvester that is used to detect the Household Appliance situation usually.The common detection of accomplishing electrical appliance use power of above-mentioned voltage detection unit and current detecting unit.It is inner or outside that above-mentioned voltage detection unit, current detecting unit and power information harvester need be installed on each electrical appliance; Form data stream after the Information Monitoring of power information harvester and communicate by letter, realize monitoring and control the Household Appliance situation with host computer.But because electrical appliance is of a great variety in the family, number is huge, has problems such as costly, system complex and additional power consumption increase when being applied to above-mentioned intelligence monitoring and controlling device in the family, is limiting the application of such device always.
Summary of the invention
For shortcomings such as costly, the system complex that overcomes that the household electrical appliance supervisory system exists and additional power consumption increases, the utility model provides a kind of device that is used to detect domestic electric appliances.This device is installed on family's house lead in, and the household electricity general power is detected.Utilize current detecting and voltage detection unit to detect the total electric power of family; Send voltage comparator circuit and the setting threshold of output through cheap and simple to do comparison according to the change of current detecting and voltage detection unit then, the result after comparing delivers to warning circuit output alarm sound.
The utility model technical scheme that is adopted of dealing with problems is: household electrical appliance pick-up unit 2 mainly is made up of three parts, voltage detecting and current detection module 3, power-sensing circuit 4 and warning circuit 5.After installing this device 2 additional on family's house lead in 1; People can trigger 2 pairs of total electric powers of household electrical appliance of this pick-up unit and detect when leaving the residence; When total electric power is higher than set alarm threshold value among the manager; Send chimes of doom, judge whether to exist in the residence with this and forget the household electrical appliance of closing, reach potential safety hazard that elimination brings by household electrical appliance and the purpose that reduces waste of energy.
Power-sensing circuit 4 is made up of sample resistance 7, threshold setting resistance 8 and operational amplifier LM3249.Become by voltage detecting and current detection module and to send the signal of output to be applied on the sample resistance 7 since in the circuit with 0～20mA current delivery magnitude of power, so this electric current can form voltage difference at sample resistance 7 two ends during through sample resistance.The voltage of voltage that sample resistance 7 obtains and threshold setting resistance 8 output terminals compares through operational amplifier 9, according to output alarm signal as a result relatively.
Use simple and reliable comparator circuit, realized conveniently to set the function of electric power alarm threshold value.Adopt the pattern of triggering-detection, realized low energy consumption, environmental protection function.Adopt cheap components and parts to realize characteristic cheaply.
Description of drawings
Fig. 1 the utility model detects schematic diagram
1. family's house lead in 2. household electrical appliance pick-up units, 3. current detecting and voltage detection module 4. power-sensing circuit 5. warning circuits, 6. household electrical appliance (bulb)
Fig. 2 the utility model power-sensing circuit
7. sample resistance 8. threshold setting resistance 9. comparer amplifier LM324
Fig. 3 the utility model warning circuit
10. hummer 11.NPN triode
Fig. 4 the utility model considers only to open the application example of refrigerator
Embodiment
According to the operating position of household electrical appliance, the refrigerator in the family is the state that is in energized all the time usually, so, the novel operating position that this device is described for example according to the special applications of refrigerator in the family of this use.Power approximately is about 150W during the domestic refrigerator operation, and holding state then power is about 0W, so, adopt 4 comparator circuits to form the warning section here, then can effectively get rid of the interference whether refrigerator moves.
The comparer control that 4 of a among Fig. 4, b, c, d are made up of four amplifiers of LM324 respectively.Separated into two parts that can household electrical appliance are general, refrigerator and other electrical equipment.When the electricity consumption general power is lower than a point among the manager, represent refrigerator to be in standby, and other electrical equipment do not open yet, hummer this moment sounding not.Because there is holding state in part electrical equipment, such as TV, micro-wave oven etc., thus be provided with a minimal power here, in order to avoid false alarm.When general power surpasses a point less than the b point, represent refrigerator to be in standby, but there are other electrical appliances that should close still opening, this moment, the hummer sounding was closed some electrical appliance in the reminds people man.When general power surpasses b point less than c point, represent refrigerator turn round in electric power about consumption 150W, but do not have other electrical appliance work, at this moment hummer sounding not.When general power surpasses c point less than d point, representing refrigerator and other electrical appliances simultaneously in work, produce alarm this moment, certainly the d common correspondence of voltage of ordering the getable maximum voltage of sample resistance.
Voltage on the threshold setting resistance 8 that a, b, c, d are 4 is respectively 0.4V, 0.6V, 2.3V, 2.7V.
Claims (1)
1. household electrical appliance detection alarm appearance is characterized in that mainly being made up of three parts voltage detecting and current detection module, power-sensing circuit and warning circuit; Power-sensing circuit is made up of sample resistance, threshold setting resistance and operational amplifier LM3249, become by voltage detecting and current detection module and send the signal of output to be applied on the sample resistance since in the circuit with 0～20mA current delivery magnitude of power; During this electric current process sample resistance, can form voltage difference at the sample resistance two ends, the voltage of voltage that sample resistance obtains and threshold setting resistance output terminal passes through operational amplifier; Compare, warning circuit is made up of hummer and triode, when the comparative result of comparer LM3249 is high level; This moment, general power was greater than threshold value; The triode conducting forms output current, and the driving hummer is sounded and reported to the police.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201187430U CN202102043U (en) | 2011-04-21 | 2011-04-21 | Detecting alarm for household appliances |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201187430U CN202102043U (en) | 2011-04-21 | 2011-04-21 | Detecting alarm for household appliances |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202102043U true CN202102043U (en) | 2012-01-04 |
Family
ID=45388048
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201187430U Expired - Fee Related CN202102043U (en) | 2011-04-21 | 2011-04-21 | Detecting alarm for household appliances |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202102043U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103792458A (en) * | 2012-10-30 | 2014-05-14 | Ls产电株式会社 | Disconnection detecting apparatus and method |
| CN111323644A (en) * | 2020-03-17 | 2020-06-23 | 陶齐雄 | Intelligent monitoring method and system based on electric energy meter |
-
2011
- 2011-04-21 CN CN2011201187430U patent/CN202102043U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103792458A (en) * | 2012-10-30 | 2014-05-14 | Ls产电株式会社 | Disconnection detecting apparatus and method |
| CN111323644A (en) * | 2020-03-17 | 2020-06-23 | 陶齐雄 | Intelligent monitoring method and system based on electric energy meter |
| CN111323644B (en) * | 2020-03-17 | 2022-11-18 | 广东恒港电力科技股份有限公司 | Intelligent monitoring method and system based on electric energy meter |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120104 Termination date: 20130421 |