CN106707092A - Intelligent alarm prompt circuit device for too high resistance of household appliance - Google Patents
Intelligent alarm prompt circuit device for too high resistance of household appliance Download PDFInfo
- Publication number
- CN106707092A CN106707092A CN201710105091.9A CN201710105091A CN106707092A CN 106707092 A CN106707092 A CN 106707092A CN 201710105091 A CN201710105091 A CN 201710105091A CN 106707092 A CN106707092 A CN 106707092A
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- China
- Prior art keywords
- household electrical
- resistance
- intelligent alarm
- circuit device
- household appliance
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- 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.)
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- 230000007246 mechanism Effects 0.000 claims abstract description 6
- 238000012544 monitoring process Methods 0.000 claims description 3
- 238000010891 electric arc Methods 0.000 description 6
- 238000010892 electric spark Methods 0.000 description 6
- 230000032683 aging Effects 0.000 description 3
- 239000004020 conductor Substances 0.000 description 3
- 230000005611 electricity Effects 0.000 description 3
- 230000007774 longterm Effects 0.000 description 3
- 238000012806 monitoring device Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000002269 spontaneous effect Effects 0.000 description 2
- 206010000369 Accident Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000000505 pernicious effect Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
- G01R31/66—Testing of connections, e.g. of plugs or non-disconnectable joints
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/165—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values
Abstract
The invention discloses an intelligent alarm prompt circuit device for too high resistance of a household appliance. The device is mainly composed of a large resistor R1 connected in parallel to a to-be-monitored household appliance product line or household appliance connecting line and having the resistance about 200 times higher than the total resistance R2 of the original circuit, and an indicating mechanism with a controller. The controller is connected in series with an indicating alarm component. APP software and an indicating component are further arranged in the controller of the indicating mechanism, wherein the indicating component sends a signal to a main control board of the household appliance when the current reaches a certain value so that the control board indicates a sound-light component to given an alarm, and simultaneously sends information to the APP software. The device can automatically alarm too high resistance in a circuit, thereby protecting the household appliance.
Description
Technical field
The present invention relates to family's electro-technical field, more particularly, to the protection technique of household electrical appliances, specially in automatic alarm circuit
The excessive warning technical field of resistance.
Background technology
Problems of the prior art and shortcoming：
In use, contact point is colded and heat succeed each other household electrical appliances such as electric heater for a long time, after use time is long all the time
Termination contact point loose contact, causes connections terminal contact area to reduce, and contact resistance increase forms hot-spot, draws
Play contact point and produce electric spark, electric arc or more serious fire accident.
The reason for causing accident mainly binding post contact area is reduced, contact resistance increase.
After the long-term high-power use of household electrical appliance (such as electric heater), the binding post of product is because of oxidation, loose contact etc.
It is bad contact and cause contact resistance to increase.The area of section that electric current can pass through is reduced.(for example：Current flow be 13A, it is necessary to
The cross-sectional area of wire is 1.5mm2, but the actually active cross-sectional area for passing through is 1.0mm2Or smaller), and this value is in length
Can also continue to reduce because further aging in the use of phase.
By the computing formula of resistance
(wherein R is resistance, and ρ is resistivity, and l is conductor length, and s is the cross-sectional area of conductor) understands the contact electricity of joint
Resistance and tri- factors of ρ, l, s are relevant, and generally, the junction length l of joint and electricalresistivityρ ignore, therefore the contact of joint
With area s inversely, i.e., area is smaller, and resistance R is bigger for resistance.
By Joule's law, it is known that
Q=I2RT
After resistance increase, caloric value increases (wherein Q is heat, and I is electric current, and R is resistance, and T is the time) therewith
Understand that the caloric value and tri- factors of I, R, T of joint are relevant, and caloric value in the unit interval only and I, R two because
Have pass.Due to electric heater product, operating current I is larger in itself, and after contact area diminishes, conductive contact resistance constantly increases,
Joint and neighbouring conductor overheating amount also increase therewith, and the increase of near joints heat influences conductive contact resistance again, constantly pernicious to follow
Ring.
When heat makes Wire temperature exceed certain value, electric wire rubber or plastic insulating layer will ignitions.If electric
Line " overcoat " is damaged, and can also cause short circuit, two lines is collided, so as to trigger electric discharge and produce the phenomenons such as electric spark, electric arc.These
If electric spark, electric arc fall on flammable, combustibles, it is possible to cause electric heater spontaneous combustion, cause fire.
The applicable cases of prior art are：(1) leakage protecting plug；This kind of plug can only protect the product to have drain conditions,
Plug adstante febre could act power-off, not protect interiors of products connecting line contact point to send out electric spark, electric arc thermogenetic even
Phenomenon on fire.
(2) earth leakage circuit-breaker；Such switch can only protect household electrical appliance that the protection of drain conditions occurs, and not protect right
In electric spark, electric arc or even phenomenon on fire that household electrical appliance are produced because loose contact causes resistance excessive.
Although having in power network using the detection of relay contacts resistance mode, such as entitled relay contacts resistance is online
Monitoring device (CN201520579714.2), disclosure (bulletin) number are CN204903718U, the applying date is 2015.08.04, disclosure
(bulletin) day is the patent application of 2015.12.23, and it is related to a kind of relay contacts resistance on-Line Monitor Device.Including relay
Device.It is to be connected with relay by the cross beam frame set in it by monitoring device；Feeler row on monitoring device base connect
External direct current power supply is connect, the loop of external direct current power supply is provided with indicator lamp.When being monitored excessive to D.C. resistance, this dress
Putting can show power transfer relay, and alarm.Can effective control relay service life, remind staff in time more
Change old relay；Relay failure can also directly be reflected, facilitate fault discovery during accident treatment.Significantly improve electricity
The Personal Safety of Force system livewire work personnel, substantially reduces the accident rate of livewire work.But for household electrical appliance
Someone does not expect adopting in this way for detection.
The content of the invention
The purpose of the present invention provided aiming at the deficiencies in the prior art it is a kind of it is an object of the invention to provide it is a kind of from
The excessive alarming indicating device of resistance in dynamic warning circuit.
In order to reach object above, patent of the present invention is adopted the following technical scheme that：
A kind of excessive intelligent alarm cue circuit device of household electrical appliances resistance, the device is mainly is needing the household electrical appliance of monitoring
In product circuit or in household electrical appliance connection line the one in parallel big resistance R1 than big more than 100 times of primary circuit all-in resistance R2 with
Indicating mechanism's composition of tape controller.
Used as further illustrating for such scheme, the controller is serially connected with instruction warning piece；Controller is additionally provided with
APP softwares, electric current reaches certain value just to signal household electrical appliance master board, from control panel send the warning of acousto-optic part simultaneously to
APP softwares send the indicate indicator of information.(big resistance is connected with indicate indicator.)
Further, described device can also be as an element in parallel between household electrical appliance connecting line.
The device can also be as an element in parallel between household electrical appliance and socket.
Compared with prior art, the excessive intelligent alarm cue circuit device tool of a kind of family expenses resistance that patent of the present invention is provided
There is following beneficial effect：
The device Main Function be inside household electrical appliance or household electrical appliance connecting line between or household electrical appliance and socket it
Between alarming device is installed, user is notified in time before wire or contact terminal produce electric spark, electric arc, it is possible to prevente effectively from because of line
Road is aging, termination contact is bad and causes spontaneous combustion and the fire incident that triggers.
Brief description of the drawings
Fig. 1 is circuit theory diagrams of the invention.
Specific embodiment
Below in conjunction with the accompanying drawings and embodiment is further described to patent of the present invention.
As shown in figure 1, the excessive intelligent alarm cue circuit device of a kind of household electrical appliances resistance of the invention, the device is mainly
Need in the household electronic products circuit of monitoring or in household electrical appliance connection line one in parallel it is bigger by 100 than primary circuit all-in resistance R2
The indicating mechanism of big resistance R1 (especially be with 200 times or so optimal, such as 160-250 times) and tape controller more than times constitutes,
It is assumed that electric heater all-in resistance is R2, alarming device resistance in parallel is R1, and R1 is much larger than R2, and the resistance R1 of alarming device compares
Greatly, the electric current very little for flowing through, alarming device does not work.But after electric heater wire is because of long-term use, aging circuit, resistance
After R2 gradually increases, alarming device flows through electric current I1 and will increase, and after reaching certain value, master controller can just receive the electricity of I1
Stream signal, afterwards, then sends acousto-optic indicate indicator while sending the instruction notification of information to APP softwares to user from control panel,
Notifying that producer processes the device by user again can be as an element in parallel in household electrical appliance interiors of products circuit.
The device can also be as an element in parallel between household electrical appliance connecting line.
The device can also be as an element in parallel between household electrical appliance and socket.
Concrete operating principle is as follows：
As illustrated, under normal condition, R1 is much larger than R2, by parallel-current formula
So, the resistance R1 of alarming device is much larger than R2, so the electric current I1 very littles of the resistance R1 of the alarming device for flowing through,
The not up to action current of the indicating mechanism of tape controller, alarming device does not work.
After long-term use, resistance R2 constantly increases, and is learnt by current formula, the resistance R1 electric currents of the alarming device for flowing through
I1 will constantly increase, but after electric current I1 increases to the indicate indicator action current of alarming device, alarming device will send
Warning, notifies user, then handled accordingly by user.
Above-described is only the preferred embodiment of the present invention, it is noted that for one of ordinary skill in the art
For, without departing from the concept of the premise of the invention, various modifications and improvements can be made, these belong to the present invention
Protection domain.
Claims (6)
1. the excessive intelligent alarm cue circuit device of a kind of household electrical appliances resistance, the device is mainly is needing the household electrical appliance of monitoring to produce
One in parallel big resistance R1 and band than big more than 100 times of primary circuit all-in resistance R2 in product circuit or in household electrical appliance connection line
Indicating mechanism's composition of controller.
2. the excessive intelligent alarm cue circuit device of household electrical appliances resistance according to claim 1, it is characterised in that the control
Device is serially connected with instruction warning piece.
3. the excessive intelligent alarm cue circuit device of household electrical appliances resistance according to claim 2, it is characterised in that the instruction
Mechanics controller is also built-in with APP softwares, and electric current reaches certain value just to signal household electrical appliance master board, indicated by control panel
Acousto-optic part sends warning while sending the indicate indicator of information to APP softwares.
4. the excessive intelligent alarm cue circuit device of household electrical appliances resistance according to any one of claims 1 to 3, its feature exists
In described device is as an element in parallel between household electrical appliance connecting line.
5. the excessive intelligent alarm cue circuit device of household electrical appliances resistance according to any one of claims 1 to 3, its feature exists
In described device is as an element in parallel between household electrical appliance and socket.
6. the excessive intelligent alarm cue circuit device of household electrical appliances resistance according to any one of claims 1 to 3, its feature exists
In the big resistance R1 in parallel is bigger 160-250 times than primary circuit all-in resistance R2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710105091.9A CN106707092A (en) | 2017-02-25 | 2017-02-25 | Intelligent alarm prompt circuit device for too high resistance of household appliance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710105091.9A CN106707092A (en) | 2017-02-25 | 2017-02-25 | Intelligent alarm prompt circuit device for too high resistance of household appliance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106707092A true CN106707092A (en) | 2017-05-24 |
Family
ID=58917533
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710105091.9A Pending CN106707092A (en) | 2017-02-25 | 2017-02-25 | Intelligent alarm prompt circuit device for too high resistance of household appliance |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106707092A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111169413A (en) * | 2018-11-12 | 2020-05-19 | 利萨·德雷克塞迈尔有限责任公司 | Electric energy transmission system and conductor system |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2126463U (en) * | 1992-07-15 | 1992-12-30 | 马鞍山电力科技开发公司 | Switch with electricity-leakage protection |
| DE102005060123A1 (en) * | 2004-12-20 | 2006-06-22 | Friedl, Helmut, Dipl.-Ing. | Control device for controlling supply to alarm devices has non-linear control element, which permits no current flow in other direction if current is below known threshold value or corresponds to threshold value of differential resistance |
| CN1888717A (en) * | 2005-06-28 | 2007-01-03 | 海尔集团公司 | Earthwire charged monitoring display water heater |
| CN104638768A (en) * | 2015-02-12 | 2015-05-20 | 哈尔滨电工仪表研究所 | Intelligent power distribution security control terminal based on residential electricity consumption |
| CN204903718U (en) * | 2015-08-04 | 2015-12-23 | 国家电网公司 | Relay contact resistance on -line monitoring device |
-
2017
- 2017-02-25 CN CN201710105091.9A patent/CN106707092A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2126463U (en) * | 1992-07-15 | 1992-12-30 | 马鞍山电力科技开发公司 | Switch with electricity-leakage protection |
| DE102005060123A1 (en) * | 2004-12-20 | 2006-06-22 | Friedl, Helmut, Dipl.-Ing. | Control device for controlling supply to alarm devices has non-linear control element, which permits no current flow in other direction if current is below known threshold value or corresponds to threshold value of differential resistance |
| CN1888717A (en) * | 2005-06-28 | 2007-01-03 | 海尔集团公司 | Earthwire charged monitoring display water heater |
| CN104638768A (en) * | 2015-02-12 | 2015-05-20 | 哈尔滨电工仪表研究所 | Intelligent power distribution security control terminal based on residential electricity consumption |
| CN204903718U (en) * | 2015-08-04 | 2015-12-23 | 国家电网公司 | Relay contact resistance on -line monitoring device |
Non-Patent Citations (1)
| Title |
|---|
| 杨亮仪: "电气安全智能监控***", 《广东建材》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111169413A (en) * | 2018-11-12 | 2020-05-19 | 利萨·德雷克塞迈尔有限责任公司 | Electric energy transmission system and conductor system |
| CN111169413B (en) * | 2018-11-12 | 2024-03-19 | 利萨·德雷克塞迈尔有限责任公司 | Power transmission system and wire system |
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| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170524 |