CN1697571A - Apparatus for controlling load of electric carpet - Google Patents
Apparatus for controlling load of electric carpet Download PDFInfo
- Publication number
- CN1697571A CN1697571A CN 200410037864 CN200410037864A CN1697571A CN 1697571 A CN1697571 A CN 1697571A CN 200410037864 CN200410037864 CN 200410037864 CN 200410037864 A CN200410037864 A CN 200410037864A CN 1697571 A CN1697571 A CN 1697571A
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- China
- Prior art keywords
- pulse
- electric blanket
- load
- unit
- control device
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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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- Control Of Resistance Heating (AREA)
Abstract
Using power source pulse signal, the control unit controls load of electric blanket with small changing output. Operation unit inputs an operation signal to microprocessor. The microprocessor provides an output of power source pulse signal, which makes a driving unit generate an output of driving signal in order to control number of pulse from power source to load. Power control is reached through ratio between operating power source pulse and not operating power source pulse. Each pulse is turned on at 0 degree or 180 degree, i.e. turning on at 0 voltage will not create issue of harmonic interference.
Description
Technical field
The present invention relates to a kind of electric blanket load control device, particularly a kind of umber of pulse of utilizing the control power supply to the electric blanket load reaches the device of power control by working with the ratio of idle power pulse.
Background technology
The temperature control equipment of general electric blanket, temperature contrast must be in certain safe rangies, can not be too high, and circuit design also must be safe, otherwise is easy to generate danger.Known present electric blanket product load control device, because electric heating control and circuit design are bad, cause temperature easily too high and take place to scald or danger such as initiation fire, so the load control device of electric blanket needs further to be improved, and uses and avoid the generation of disaster safely to guarantee the user.
Summary of the invention
The purpose of this invention is to provide a kind of electric blanket load control device; to solve above-mentioned prior art problems; the present invention utilizes the output of power pulse signal controlling to change little load; not only circuit simply is easy to make; also not having instantaneous large-current produces; part is not fragile, yet protective circuit that must be not extra, more unlikely generation excessive temperature.
For realizing above-mentioned purpose, electric blanket load control device of the present invention comprises: microprocessing unit provides power pulse signal output; Be connected with above-mentioned microprocessing unit, and provide an operating control signal to export the operating unit of microprocessing unit to; Be connected with above-mentioned microprocessing unit, and driven by microprocessing unit and produce the driver element of drive signal output; Wherein, the output of microprocessing unit control power supply comes power controlling to the umber of pulse of load by the work and the ratio of idle power pulse.
When the operating unit input operation signal to microprocessing unit, this microprocessing unit provides power pulse signal output, cause driver element to produce drive signal output, with the umber of pulse of control power supply to the electric blanket load, ratio by work and idle power pulse reaches power control, because each pulse all is from 0 degree angle or from 180 degree conductings during angles, during just from 0 voltage with regard to conducting, so do not have the problem that produces Harmonic Interference.
The present invention is described in detail with instantiation below in conjunction with accompanying drawing.
Description of drawings
Fig. 1 is an electric blanket load control device schematic block follow diagram of the present invention;
Fig. 2 is a prime time power pulse waveform schematic diagram of the present invention;
Fig. 3 is a middle-grade power pulse waveform schematic diagram of the present invention;
Fig. 4 is a weak shelves power pulse waveform schematic diagram of the present invention.
Description of reference numerals: microprocessing unit 1; Operating unit 2; Power-supply unit 3; Driver element 4; Load 5.
Embodiment
See also the schematic flow sheet of electric blanket load control device of the present invention shown in Figure 1.As shown in the figure: electric blanket load control device of the present invention comprises: a microprocessing unit 1, one operating unit 2 that is connected with aforementioned microprocessing unit 1, one is connected power-supply unit 3 with aforementioned microprocessing unit 1, the load 5 that one driver element 4, that connected by aforementioned microprocessing unit 1 is driven by aforementioned driver element 4.Power pulse signal output control load 5 actions that microprocessing unit 1 produces, and utilize 5 actions of power pulse control load, not only circuit simply is easy to make; also not having instantaneous large-current produces; part is not fragile, yet protective circuit that must be not extra, more unlikely generation excessive temperature.
The above-mentioned microprocessing unit of carrying 1 produces power pulse signal output;
This power-supply unit 3 provides each unit required power supply;
Thus, constitute a load control device that utilizes the load of power pulse signal controlling to move.
See also the electric blanket load control device square process of the present invention of Fig. 1～shown in Figure 4 and prime time, middle-grade, weak shelves power pulse waveform schematic diagram.As shown in the figure: electric blanket load control device of the present invention, utilize the umber of pulse of control power supply to load 5, ratio by work and idle power pulse reaches power control, because each pulse all is from 0 degree angle or from 180 degree conductings during angles, during just from 0 voltage with regard to conducting, so do not have the problem that produces Harmonic Interference.
So when the button of operating unit 2 is cut to weak shelves, first pulsed operation (control assembly conducting), and second and third pulse is not worked.
And switch to when middle-grade, first and second pulsed operation then, and the 3rd pulse do not worked.
If when switching to the prime time, then three pulses are all worked.
Hence one can see that, and weak shelves are 1/3 of the prime time, and middle-grade is 2/3 of the prime time, thus can reach the purpose of power control, and be adapted at exporting on the product that diminishes, as electric blanket.When control load 5, do not have instantaneous large-current yet and produce, part is not fragile, yet protective circuit that must be not extra, more unlikely generation excessive temperature.
Above-mentioned is preferred embodiment of the present invention only, is not to be used for limiting the scope of the present invention.Therefore, all equalizations of doing according to claim of the present invention change and modify, and all belong to the scope of patent of the present invention.
Claims (5)
1, a kind of electric blanket load control device comprises:
Microprocessing unit provides power pulse signal output;
Be connected with above-mentioned microprocessing unit, and provide an operating control signal to export the operating unit of microprocessing unit to;
Be connected with above-mentioned microprocessing unit, and driven by microprocessing unit and produce the driver element of drive signal output;
Wherein, the output of microprocessing unit control power supply comes power controlling to the umber of pulse of load by the work and the ratio of idle power pulse.
2, electric blanket load control device as claimed in claim 1, wherein this operating unit is any of several buttons or multisection type diverter switch.
3, electric blanket load control device as claimed in claim 1, wherein this pulse is from 0 degree angle or from 180 degree angle conductings, during just from 0 voltage with regard to conducting, so do not have the problem that produces Harmonic Interference.
4, electric blanket load control device as claimed in claim 1 wherein can change little load in order to control output.
5, electric blanket load control device as claimed in claim 1 wherein also has a power-supply unit that each required power supply in unit is provided.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410037864 CN1697571A (en) | 2004-05-12 | 2004-05-12 | Apparatus for controlling load of electric carpet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410037864 CN1697571A (en) | 2004-05-12 | 2004-05-12 | Apparatus for controlling load of electric carpet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1697571A true CN1697571A (en) | 2005-11-16 |
Family
ID=35350049
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200410037864 Pending CN1697571A (en) | 2004-05-12 | 2004-05-12 | Apparatus for controlling load of electric carpet |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1697571A (en) |
-
2004
- 2004-05-12 CN CN 200410037864 patent/CN1697571A/en active Pending
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |