CN105146988A - Electric blanket based on pressure sensitive automatic switch - Google Patents
Electric blanket based on pressure sensitive automatic switch Download PDFInfo
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- CN105146988A CN105146988A CN201510516902.5A CN201510516902A CN105146988A CN 105146988 A CN105146988 A CN 105146988A CN 201510516902 A CN201510516902 A CN 201510516902A CN 105146988 A CN105146988 A CN 105146988A
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- electric blanket
- temperature
- pressure
- control module
- control unit
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Abstract
The invention discloses an electric blanket based on a pressure sensitive automatic switch. The electric blanket includes an electric blanket body, a control module, a timing module, a temperature setting module, a temperature sensor, and a plurality of pressure sensors uniformly disposed in the electric blanket. The control module is connected with the electric blanket body, the timing module, the temperature setting module, the temperature sensor and the plurality of pressure sensors. The temperature senor is disposed in the electric blanket body. The temperature setting module is used for setting a target temperate. The timing module is used for inputting a timing instruction to the control module. When the electric blanket works, a power supply of the electric blanket is powered on only when the pressure sensor detects that a heating target is on the electric blanket, and the heating power is regulated according to the temperature detected by the temperature sensor. The electric blanket is simple in structure, convenient to use, energy saving and low in emission, a heating switch is controlled through pressure induction, so the potential safety hazard can be reduced.
Description
Technical field
The present invention relates to field of household appliances, particularly relate to a kind of electric blanket based on pressure sensitive automatic switch.
Background technology
Electric blanket, has another name called electrical blanket, and be a kind of contact electric heating appliance, it is by special, and the soft cable-styled heating that insulating properties reach standard inweaves or sews up in dish serpentine in woollen blanket, during energising and the evolution of heat.Be mainly used in improving when people sleep temperature in quilt to reach heating object.What also can be used for bed clothes goes tide dehumidifying.Its power consumption is few, temperature is adjustable, easy to use, use is extensive, the history of existing more than 100 year.Had at present Novel non radiation electric blanket to obtain national patent, pregnant woman, children, old man can relieved use Nonradiative electric blanket.
Along with the development of science and technology, the application of sensor is increasingly extensive, sensor substitutes people and obtains various information, the general principle of multi-sensor information fusion technology is just as the process of the brain integrated treatment information of people, various sensor is carried out message complementary sense and the optimum organization process in multi-level, many spaces, final generation is explained the uniformity of observing environment.Multi-source data will be utilized in this process fully to carry out rationally domination and use, and the final goal of information fusion is then the separation observation information obtained based on each sensor, derives more useful informations by, various combinations multi-level to information.This is not only and make use of the mutual crew-served advantage of multiple sensor, and the data in integrated treatment out of Memory source improve the intellectuality of whole sensing system.
Pressure sensor is the most widely used a kind of sensor.Traditional pressure sensor is based on the device of frame for movement type, and with the deformation indicated pressure of flexible member, but this physical dimension is large, quality weight, and electricity can not be provided to export.Along with the development of semiconductor technology, semiconductor pressure sensor also arises at the historic moment.Be characterized in that volume is little, quality is light, the degree of accuracy is high, good temp characteristic.Particularly along with the development of MEMS technology, semiconductor transducer is towards miniaturization, and its power consumption is little, reliability is high.
It is made up of parts such as matrix material, metal strain silk or strain paper tinsel, insulation protection sheet and lead-out wires.According to different purposes, the resistance of resistance strain gage can be designed by designer, but the span of resistance should be noted: resistance is too little, required drive current is too large, the heating of foil gauge simultaneously causes the temperature of itself too high, uses, make the change in resistance of foil gauge too large in different environment, output null offset is obvious, and zeroing circuit is too complicated.And resistance is too large, impedance is too high, and the electromagnetic interference capability in the anti-external world is poor.About being generally tens Europe to tens kilo-ohm.
Resistance strain gage is a kind of Sensitive Apparatus strain variation on measured piece being converted into a kind of signal of telecommunication.It is one of chief component of pressure resistance type strain transducer.What resistance strain gage application was maximum is metal resistance strain gauge and semiconductor gauge two kinds.Metal resistance strain gauge has again thread foil gauge and metal foil-like foil gauge two kinds.Normally being bonded in closely by special bonding agent by foil gauge produces on mechanics strain matrix, when the stressed generation STRESS VARIATION of matrix, resistance strain gage also produces deformation together, and the resistance of foil gauge is changed, thus makes to be added in ohmically voltage and change.The change in resistance that this foil gauge produces when stressed is usually less, and general this foil gauge all forms strain bridge, and is amplified by follow-up instrument amplifier, then is transferred to treatment circuit (normally A/D conversion and CPU) display or executing agency.
The operation principle of metal resistance strain gauge is adsorbed on strain resistor on matrix material to produce the phenomenon of change in resistance with mechanical deformation, is commonly called as resistance strain effect.The resistance value R of metallic conductor can be represented by the formula:
R=ρL/S
In formula, ρ is the resistivity of metallic conductor, and S is the sectional area of conductor, and L is the length of conductor.
We are for wire strain resistor, when wire is by External Force Acting, its length and sectional area all can change, can be easy to find out from above formula, namely its resistance value can change, if when wire extends by External Force Acting, its length increases, and sectional area reduces, resistance value just can increase.When wire compresses by External Force Acting, length reduces and cross section increases, and resistance value then can reduce.As long as measure the change (normally the voltage at measuring resistance two ends) being added in resistance, strain strain feelings wiry can be obtained.
Should be noted that a lot of problem when selection pressure sensor, such as, the temperature characterisitic of the range of pressure sensor, precision, pressure sensor, chemical characteristic all will be considered, and the operating type of pressure sensor is also the major issue needing to consider.
Such as, when sensor is used for measurement from fluid pressure of the measurement of gas pressure, situation is just different.Gas is compressible fluid, increases when taking by force and can store certain compression energy, discharge again during decompression with kinetic energy, apply shock wave to sensor elastic membrane.Require that pressure sensor has larger overload capacity.Liquid is incompressible fluid, when pressure sensor is installed, tightens nut and fluid pressure then can be made to increase to over the withstand voltage limit of elastic membrane without compressible space again, cause elastic membrane to be broken.Because this situation occurs repeatedly, also require that pressure sensor has larger overvoltage capabilities.During the work under bad environment of pressure sensor, such as, there are large vibration, impact, large electromagnetic interference, more strict requirement is proposed to sensor.Not only overvoltage capabilities is strong, and requires that mechanical seal is reliable, and anti-loosening, sensor is installed correct.The lead-in wire of sensor self, pin and outer conductor all should electromagnetic shieldings in addition, and will shield good earth.In addition, the consistency problem of pressure sensor and fluid being measured medium should be considered.The elastic membrane structure of such as sensor should separate with Korrosionsmedium, has now adopted stainless steel radiation fins sensor, and transmission medium made by the interior silicone oil of sensor.When sensor detects inflammable, explosive pressure medium, use little exciting current, produce spark, Mars when preventing elastic membrane from breaking, and increase the voltage endurance capability of pressure sensor overcoat.
Existing electric blanket is the on-line operation when being energized generally, and do not judge whether have people above it, sometimes, people can forget the plug pulling out electric blanket, on the one hand, cause the long-time dry run of electric blanket, waste electric energy, on the other hand, be subject to fire, potential safety hazard is very big.
Summary of the invention
Technical problem to be solved by this invention is for defect involved in background technology, provides a kind of electric blanket based on pressure sensitive automatic switch.
The present invention is for solving the problems of the technologies described above by the following technical solutions:
Based on the electric blanket of pressure sensitive automatic switch, comprise electric blanket body, control module, time block, temperature setting module, temperature sensor and some pressure sensors be evenly arranged on electric blanket body;
Described control module is connected with electric blanket body, time block, temperature setting module, temperature sensor, each pressure sensor respectively;
Described temperature sensor is arranged on described electric blanket body, for the temperature of Induction Heating blanket, and is passed to described control module;
Described temperature setting module for setting target temperature, and is passed to described control module;
Described time block is used for time-of-the-day order to input to described control module;
Described pressure sensor is for responding to the force value at its place place, and the force value sensed passes to described control module;
Described control module comprises pressure comparison unit, temperature control unit, timing control unit and switch control unit;
Described pressure comparison unit is used for the force value of each pressure sensor received and the pressure threshold preset to compare, sending open command to described switch control unit when existing when force value is more than or equal to the pressure sensor of described pressure threshold, sending out code to described switch control unit when not existing when force value is more than or equal to the pressure sensor of described pressure threshold;
Described temperature control unit be used for according to temperature sensor senses to temperature control the heating power of described electric blanket body, make the temperature of electric blanket equal the target temperature set;
The time-of-the-day order that described timing control unit is used for setting according to described time block sends out code to described switch control unit;
Described switch control unit is used for the power supply connecting described electric blanket body when receiving open command, and cuts off the power supply of described electric blanket body when receiving out code.
As the further prioritization scheme of the electric blanket that the present invention is based on pressure sensitive automatic switch, the processor of described control module adopts ARM series monolithic.
As the further prioritization scheme of the electric blanket that the present invention is based on pressure sensitive automatic switch, the processor of described control module adopts SAA7750 single-chip microcomputer.
As the further prioritization scheme of the electric blanket that the present invention is based on pressure sensitive automatic switch, described pressure sensor adopts piezoresistive pressure sensor.
As the further prioritization scheme of the electric blanket that the present invention is based on pressure sensitive automatic switch, the model of described piezoresistive pressure sensor is MPM380.
The present invention adopts above technical scheme compared with prior art, has following technique effect:
1. structure is simple, easy to use;
2. control heater switch by pressure sensitive, energy-saving and emission-reduction, reduce potential safety hazard.
Detailed description of the invention
Below technical scheme of the present invention is described in further detail:
The invention discloses a kind of electric blanket based on pressure sensitive automatic switch, comprise electric blanket body, control module, time block, temperature setting module, temperature sensor and some pressure sensors be evenly arranged on electric blanket body;
Described control module is connected with electric blanket body, time block, temperature setting module, temperature sensor, each pressure sensor respectively;
Described temperature sensor is arranged on described electric blanket body, for the temperature of Induction Heating blanket, and is passed to described control module;
Described temperature setting module for setting target temperature, and is passed to described control module;
Described time block is used for time-of-the-day order to input to described control module;
Described pressure sensor is for responding to the force value at its place place, and the force value sensed passes to described control module;
Described control module comprises pressure comparison unit, temperature control unit, timing control unit and switch control unit;
Described pressure comparison unit is used for the force value of each pressure sensor received and the pressure threshold preset to compare, sending open command to described switch control unit when existing when force value is more than or equal to the pressure sensor of described pressure threshold, sending out code to described switch control unit when not existing when force value is more than or equal to the pressure sensor of described pressure threshold;
Described temperature control unit be used for according to temperature sensor senses to temperature control the heating power of described electric blanket body, make the temperature of electric blanket equal the target temperature set;
The time-of-the-day order that described timing control unit is used for setting according to described time block sends out code to described switch control unit;
Described switch control unit is used for the power supply connecting described electric blanket body when receiving open command, and cuts off the power supply of described electric blanket body when receiving out code.
The processor of described control module adopts ARM series monolithic, preferential employing SAA7750 single-chip microcomputer.
Described pressure sensor adopts piezoresistive pressure sensor, and model is MPM380.
Those skilled in the art of the present technique are understandable that, unless otherwise defined, all terms used herein (comprising technical term and scientific terminology) have the meaning identical with the general understanding of the those of ordinary skill in field belonging to the present invention.Should also be understood that those terms defined in such as general dictionary should be understood to have the meaning consistent with the meaning in the context of prior art, unless and define as here, can not explain by idealized or too formal implication.
Above-described detailed description of the invention; object of the present invention, technical scheme and beneficial effect are further described; be understood that; the foregoing is only the specific embodiment of the present invention; be not limited to the present invention; within the spirit and principles in the present invention all, any amendment made, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (5)
1. based on the electric blanket of pressure sensitive automatic switch, it is characterized in that, comprise electric blanket body, control module, time block, temperature setting module, temperature sensor and some pressure sensors be evenly arranged on electric blanket body;
Described control module is connected with electric blanket body, time block, temperature setting module, temperature sensor, each pressure sensor respectively;
Described temperature sensor is arranged on described electric blanket body, for the temperature of Induction Heating blanket, and is passed to described control module;
Described temperature setting module for setting target temperature, and is passed to described control module;
Described time block is used for time-of-the-day order to input to described control module;
Described pressure sensor is for responding to the force value at its place place, and the force value sensed passes to described control module;
Described control module comprises pressure comparison unit, temperature control unit, timing control unit and switch control unit;
Described pressure comparison unit is used for the force value of each pressure sensor received and the pressure threshold preset to compare, sending open command to described switch control unit when existing when force value is more than or equal to the pressure sensor of described pressure threshold, sending out code to described switch control unit when not existing when force value is more than or equal to the pressure sensor of described pressure threshold;
Described temperature control unit be used for according to temperature sensor senses to temperature control the heating power of described electric blanket body, make the temperature of electric blanket equal the target temperature set;
The time-of-the-day order that described timing control unit is used for setting according to described time block sends out code to described switch control unit;
Described switch control unit is used for the power supply connecting described electric blanket body when receiving open command, and cuts off the power supply of described electric blanket body when receiving out code.
2. the electric blanket based on pressure sensitive automatic switch according to claim 1, is characterized in that, the processor of described control module adopts ARM series monolithic.
3. the electric blanket based on pressure sensitive automatic switch according to claim 2, is characterized in that, the processor of described control module adopts SAA7750 single-chip microcomputer.
4. the electric blanket based on pressure sensitive automatic switch according to claim 1, is characterized in that, described pressure sensor adopts piezoresistive pressure sensor.
5. the electric blanket based on pressure sensitive automatic switch according to claim 4, is characterized in that, the model of described piezoresistive pressure sensor is MPM380.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510516902.5A CN105146988A (en) | 2015-08-21 | 2015-08-21 | Electric blanket based on pressure sensitive automatic switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510516902.5A CN105146988A (en) | 2015-08-21 | 2015-08-21 | Electric blanket based on pressure sensitive automatic switch |
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| Publication Number | Publication Date |
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| CN105146988A true CN105146988A (en) | 2015-12-16 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510516902.5A Withdrawn CN105146988A (en) | 2015-08-21 | 2015-08-21 | Electric blanket based on pressure sensitive automatic switch |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017124251A1 (en) * | 2016-01-18 | 2017-07-27 | 王志强 | Temperature matching-based heating method, and automatically heating electric blanket |
| CN107484270A (en) * | 2017-06-29 | 2017-12-15 | 深圳市赛亿科技开发有限公司 | Electric blanket and its control method |
| CN108174469A (en) * | 2017-12-25 | 2018-06-15 | 宁波梦捷网络技术有限公司 | A kind of energy saving electric blanket and its application method |
| CN111772609A (en) * | 2020-06-18 | 2020-10-16 | 微医佰康(福建)医疗科技有限公司 | Device for reducing air flow fluctuation in blood pressure detection air circuit |
-
2015
- 2015-08-21 CN CN201510516902.5A patent/CN105146988A/en not_active Withdrawn
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017124251A1 (en) * | 2016-01-18 | 2017-07-27 | 王志强 | Temperature matching-based heating method, and automatically heating electric blanket |
| CN107484270A (en) * | 2017-06-29 | 2017-12-15 | 深圳市赛亿科技开发有限公司 | Electric blanket and its control method |
| CN108174469A (en) * | 2017-12-25 | 2018-06-15 | 宁波梦捷网络技术有限公司 | A kind of energy saving electric blanket and its application method |
| CN111772609A (en) * | 2020-06-18 | 2020-10-16 | 微医佰康(福建)医疗科技有限公司 | Device for reducing air flow fluctuation in blood pressure detection air circuit |
| CN111772609B (en) * | 2020-06-18 | 2022-08-16 | 微医佰康(福建)医疗科技有限公司 | Device for reducing air flow fluctuation in blood pressure detection air circuit |
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Application publication date: 20151216 |