CN109143889B - Experimental method for obtaining pulse duty ratio of pulse power-up of electric heating pad - Google Patents
Experimental method for obtaining pulse duty ratio of pulse power-up of electric heating pad Download PDFInfo
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- CN109143889B CN109143889B CN201810924778.XA CN201810924778A CN109143889B CN 109143889 B CN109143889 B CN 109143889B CN 201810924778 A CN201810924778 A CN 201810924778A CN 109143889 B CN109143889 B CN 109143889B
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- pulse
- duty ratio
- temperature value
- electric blanket
- maximum temperature
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B17/00—Systems involving the use of models or simulators of said systems
- G05B17/02—Systems involving the use of models or simulators of said systems electric
Abstract
The invention relates to an experimental method for obtaining a pulse duty ratio of pulse electrification of an electric heating cushion, and belongs to the technical field of electric heating control. The method comprises 1) disabling or removing the functions of the existing electric blanket for measuring the real-time temperature and the safety power failure; 2) Controlling the pulse power-up of the existing electric blanket by using pulse signals with various different duty ratios; 3) Measuring a plurality of temperature values which are reached by the heating of the existing electric blanket after pulse power-up; 4) Finding out the highest temperature value in the plurality of temperature values, and judging and screening out the safe highest temperature value according to experience; 5) And finding out the pulse signal corresponding to the safe highest temperature value to obtain the duty ratio of the pulse signal. The method can select the duty ratio of the pulse signals corresponding to the safer highest temperatures, and the pulse signals with the duty ratio are used for controlling the pulse energization of the electric heating pad, thereby providing powerful guarantee for the safety of the pulse energization of the electric heating pad.
Description
Technical Field
The invention relates to an experimental acquisition method of a pulse signal duty ratio corresponding to an electric blanket or an electric pad when pulse power-up reaches a safe maximum temperature, and belongs to the technical field of electric heating control.
Background
Pads or blankets for electric heating or physiotherapy are commonly used in people's daily life. The electric heating sleeping mattress is generally of a constant temperature control type, and the constant temperature value is controlled to be set between 25 ℃ and 50 ℃. The heating temperature is sampled in real time by using a temperature sensor arranged in the cushion or the blanket within the temperature range, and the sampling value is compared with a set temperature value to realize automatic temperature regulation so as to achieve the aim of keeping constant temperature. This temperature control is currently a commonly used approach, and a point-sampling NTC temperature sensor and a disposable temperature-limiting temperature fuse are typically installed in the mat or blanket. The disposable temperature fuse is used for limiting the temperature to not exceed a specified upper limit temperature value once the NTC fails so as to play a role in temperature limiting protection. However, if the disposable thermal fuse is installed at multiple points in the mat, the reliability is improved, but the manufacturing cost is high, the internal wiring is complicated, and the process is difficult to realize. When the NTC temperature sensor and/or the fuse fail or are not provided, the electric pad or blanket necessarily causes a fire.
Disclosure of Invention
The invention aims to solve the technical problem of providing a method for providing a proper duty ratio of a pulse signal for the electric heating pad to reach a safe maximum temperature when pulse power is applied, thereby ensuring that the electric heating pad or blanket does not catch fire when the pulse power is applied.
In order to solve the technical problems, the invention provides the technical scheme that: an experimental method for obtaining pulse duty ratio of pulse power-up of an electric heating pad comprises the following steps:
1) The functions of the existing electric blanket for measuring the real-time temperature and the safety power failure are disabled or removed;
2) Controlling the existing electric blanket to be powered up in a pulse mode by using a plurality of pulse signals with different duty ratios;
3) Measuring a plurality of temperature values which are reached by the heating of the existing electric blanket after pulse power-on;
4) Finding out the highest temperature value in the temperature values, and judging and screening out the safe highest temperature value according to experience;
5) And finding out the pulse signal corresponding to the safe highest temperature value to obtain the duty ratio of the pulse signal.
The inventor of the invention finds that the highest temperature reached by the electric heating pad in the pulse power-on process of the electric heating pad by the duty ratio pulse signals in certain ranges can completely reach a safer temperature (whether the highest temperature is safe or not can be determined manually according to experience, so that the relationship between the duty ratio pulse signals and the highest safe temperature reached by the pulse power-on of the electric heating pad is found in advance through an experimental method.
Based on such unique findings, the inventors of the present invention have concluded the above-described technical solutions. The beneficial effects are as follows: when the electric heating pad is subjected to pulse power-up according to the duty ratio obtained by the technical scheme, even if the existing temperature sensor and the temperature fuse are invalid or the control protection of the temperature sensor and the temperature fuse is not available, the temperature of the electric heating pad can always keep the highest temperature not to exceed the highest temperature after rising to the safer highest temperature, and therefore the electric heating pad is thoroughly ensured not to generate fire. Therefore, the technical scheme of the invention provides powerful guarantee for the safety of the electric blanket or the electric pad adopting pulse power-up.
Further, the experimental method of the invention is built by adopting the following experimental equipment: the electric blanket bed comprises an electric blanket bed, a quilt bed, a simulation controller, a clamp-on ammeter, a point thermometer, an e-link32 simulator and a computer, wherein the electric blanket bed is used as a main body; the electric blanket is placed on one bed quilt, the other bed quilt is covered on the electric blanket, the control line of the simulation controller is connected with the electric blanket, the simulation line of the simulation controller is connected with the e-link32 simulator, the usb line of the e-link32 simulator is connected with a computer, and the probe of the temperature meter is connected with the heating line of the electric blanket.
In the step 2), the simulation controller and the computer are electrified;
setting duty ratio values of various different pulse signals in a computer between the steps 2) and 3), programming and outputting the pulse signals with different duty ratio values to a simulation controller, and then outputting the pulse signals to power up the electric blanket;
and 3) in the step 3), measuring the temperature value of the point thermometer after the electric heating pad is electrified for 24 hours in a pulse mode.
The environmental temperature during the experiment is 30 ℃, the range of the safe maximum temperature value is 40-80 ℃, and the range of the duty ratio is 20-60%; the corresponding relation between the duty ratio and the safe maximum temperature value is as follows:
when the duty cycle is 3/5, the safe maximum temperature value for 24 hours of the pulse energization is 79.8 ℃;
when the duty cycle is 5/9, the safe maximum temperature value for 24 hours of the pulse power-up is 66.6 ℃;
when the duty cycle is 1/2, the safe maximum temperature value for 24 hours of the pulse power-up is 54.8 ℃;
when the duty cycle is 1/3, the safe maximum temperature value for 24 hours of the pulse energization is 47.8 ℃;
when the duty cycle is 1/4, the safe maximum temperature value for 24 hours of the pulse energization is 43.5 ℃;
when the duty ratio is 1/5, the safe maximum temperature value of the pulse power-up for 24 hours is 41 ℃.
Detailed Description
Examples
The experimental method for obtaining the pulse duty ratio of the pulse energization of the electric heating pad in the embodiment is as follows:
firstly, the method comprises the following steps: experimental equipment
The existing electric blanket bed comprises a first electric blanket bed, a second cotton quilt bed, a first simulation controller, a first clamp-shaped ammeter, three point temperature meters, a first e-link32 simulator and a first computer (comprising a simulation software platform HT-IDE 3000);
II, secondly: experimental facility construction
Putting a bed quilt on a floor, putting an electric blanket on the quilt, covering the bed quilt on the electric blanket, connecting a control line of a simulation controller with the electric blanket, connecting a simulation line of the simulation controller with an e-link32 simulator, connecting a usb line of the e-link32 simulator with a computer, and connecting a probe of a point thermometer with a heating line of the electric blanket;
thirdly, the method comprises the following steps: the experiment included the following steps:
1) The functions of the existing electric heating pad for measuring the real-time temperature and the safety power failure are disabled or removed;
2) Controlling the pulse power-up of the existing electric blanket by using pulse signals with various different duty ratios;
3) Measuring a plurality of temperature values which are reached by the heating of the existing electric blanket after different pulses are powered on;
4) Finding out the highest temperature value in the temperature values, and judging and screening out the safe highest temperature value according to experience;
5) And finding out the pulse signal corresponding to the screened safe highest temperature value to obtain the duty ratio of the pulse signal.
And 2) powering on a computer of the simulation controller.
Between the steps 2) and 3), setting duty ratio values of various pulse signals in a computer, programming and outputting the pulse signals with different duty ratio values to the simulation controller, and then outputting the pulse signals to power up the electric blanket.
And 3) in the step 3), measuring the temperature value of the point thermometer after the electric heating pad is electrified for 24 hours in a pulse mode.
The environmental temperature during the experiment is 30 ℃, the safe highest temperature range is 40-80 ℃, and the duty ratio range is 20-60%; the experimental data for the control of power-up ratio by selecting a set of duty pulse signals in the present embodiment are as follows:
when the duty ratio of the pulse signal is 3/5, the maximum temperature value of the pulse power-up for 24 hours is 79.8 ℃;
when the duty ratio of the pulse signal is 5/9, the maximum temperature value of the pulse power-up for 24 hours is 66.6 ℃;
when the duty ratio of the pulse signal is 1/2, the maximum temperature value of the pulse power-up for 24 hours is 54.8 ℃;
when the duty ratio of the pulse signal is 1/3, the maximum temperature value of the pulse power-up for 24 hours is 47.8 ℃;
when the duty ratio of the pulse signal is 1/4, the maximum temperature value of the pulse power-up for 24 hours is 43.5 ℃;
when the duty ratio of the pulse signal is 1/5, the maximum temperature value at which the pulse is energized for 24 hours is 41 ℃.
Obviously, the present embodiment includes not only the above experimental result data, for example, when the ambient temperature is not 30 ℃ but other temperatures, and when the duty ratio of the pulse signal takes other values, there are other more experimental result data. The above experimental result data are provided only for the purpose of explaining the experimental method of the present embodiment, and there are many actual experimental result data. The range of safe maximum temperature values and the range of duty cycles are summarized to be essentially the numerical ranges described above.
Claims (4)
1. An experimental method for obtaining pulse duty ratio of pulse power-up of an electric heating pad comprises the following steps:
1) The functions of the constant-temperature control type electric blanket for measuring the real-time temperature and the safety power failure are disabled or removed;
2) Pulse power is applied to the electric blanket processed in the step 1) by pulse signals with various different duty ratios;
3) Measuring a plurality of temperature values which are reached by the electric blanket after being electrified by each duty ratio pulse after the electric blanket is processed in the step 2);
4) Finding out the highest temperature value in the temperature values, and screening out the safe highest temperature value;
the safe maximum temperature value is that when heating is equal to heat dissipation, the temperature is balanced at a certain safe maximum temperature point, and the balanced maximum temperature is also present and maintained even under the condition of no constant temperature feedback closed-loop control;
5) And finding out the pulse signal corresponding to the safe highest temperature value to obtain the duty ratio of the pulse signal.
2. The experimental method for obtaining the pulse duty ratio of the pulse energization of the electric heating pad according to claim 1, characterized in that the following experimental equipment is adopted for construction: the electric blanket bed comprises an electric blanket bed, a quilt bed, a simulation controller, a clamp-on ammeter, a point thermometer, an e-link32 simulator and a computer, wherein the electric blanket bed is used as a main body; the electric blanket is placed on one bed quilt, the other bed quilt is covered on the electric blanket, the control line of the simulation controller is connected with the electric blanket, the simulation line of the simulation controller is connected with the e-link32 simulator, the usb line of the e-link32 simulator is connected with a computer, and the probe of the temperature meter is connected with the heating line of the electric blanket.
3. The experimental method for obtaining the pulse duty ratio of the pulse energization of the electric heating pad according to claim 2, wherein:
in the step 2), the simulation controller and the computer are electrified;
setting duty ratio values of various different pulse signals in a computer between the steps 2) and 3), programming and outputting the pulse signals with different duty ratio values to a simulation controller, and then outputting the pulse signals to power up the electric blanket;
and 3) measuring the temperature value of the point thermometer after the electric heating pad is electrified for 24 hours in a pulse mode.
4. The experimental method for obtaining the pulse duty ratio of the pulse power-on of the electric heating pad according to claim 1, 2 or 3, is characterized in that: the environmental temperature during the experiment is 30 ℃, the range of the safe maximum temperature value is 40-80 ℃, and the range of the duty ratio is 20-60%; the corresponding relation between the duty ratio and the safe maximum temperature value is as follows:
when the duty cycle is 3/5, the safe maximum temperature value for 24 hours of the pulse energization is 79.8 ℃;
when the duty cycle is 5/9, the safe maximum temperature value for 24 hours of the pulse power-up is 66.6 ℃;
when the duty cycle is 1/2, the safe maximum temperature value for 24 hours of the pulse power-up is 54.8 ℃;
when the duty cycle is 1/3, the safe maximum temperature value for 24 hours of the pulse energization is 47.8 ℃;
when the duty cycle is 1/4, the safe maximum temperature value for 24 hours of the pulse energization is 43.5 ℃;
when the duty ratio is 1/5, the safe maximum temperature value of the pulse power-up for 24 hours is 41 ℃.
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| CN201810924778.XA CN109143889B (en) | 2018-08-14 | 2018-08-14 | Experimental method for obtaining pulse duty ratio of pulse power-up of electric heating pad |
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| CN201810924778.XA CN109143889B (en) | 2018-08-14 | 2018-08-14 | Experimental method for obtaining pulse duty ratio of pulse power-up of electric heating pad |
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| CN109143889B true CN109143889B (en) | 2023-03-17 |
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| JP2011097976A (en) * | 2009-11-04 | 2011-05-19 | Sanyo Electric Co Ltd | Electric blanket |
| WO2013177877A1 (en) * | 2012-05-31 | 2013-12-05 | 深圳市倍轻松科技股份有限公司 | Thermostatic control method for hot compress device of massage equipment, and massage equipment |
| CN205353802U (en) * | 2016-01-25 | 2016-06-29 | 希姆通信息技术（上海）有限公司 | Temperature regulation apparatus and temperature regulation circuit |
| CN205356708U (en) * | 2016-02-01 | 2016-06-29 | 胡运奇 | Safe electric blanket accuse temperature switch |
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| US7612311B2 (en) * | 2006-11-17 | 2009-11-03 | Lam Research Corporation | Methods and systems for controlling electric heaters |
| CN101145058A (en) * | 2007-04-23 | 2008-03-19 | 中兴通讯股份有限公司 | Temperature regulation device and method thereof |
| CN102727021B (en) * | 2012-06-10 | 2014-06-25 | 浙江榆阳电子有限公司 | Intelligent control DC (direct current) low-voltage electric heating quilt/blanket and intelligent control circuit of intelligent control DC low-voltage electric heating quilt/blanket |
| DE102013205255B4 (en) * | 2013-03-26 | 2017-11-02 | Institut für Mikroelektronik- und Mechatronik-Systeme gGmbH | Digital temperature sensor |
| CN104934933A (en) * | 2014-03-21 | 2015-09-23 | 鸿富锦精密工业（深圳）有限公司 | Polyphase power supply protection circuit |
| CN206847814U (en) * | 2017-05-15 | 2018-01-05 | 上海安誉智能科技有限公司 | Temperature sensing cable based on the temperature sensor line with pwm pulse output detection function |
| CN107466117B (en) * | 2017-08-23 | 2020-12-08 | 四川虹美智能科技有限公司 | Controller, method for controlling heater body by controller and electric heater |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011097976A (en) * | 2009-11-04 | 2011-05-19 | Sanyo Electric Co Ltd | Electric blanket |
| WO2013177877A1 (en) * | 2012-05-31 | 2013-12-05 | 深圳市倍轻松科技股份有限公司 | Thermostatic control method for hot compress device of massage equipment, and massage equipment |
| CN205353802U (en) * | 2016-01-25 | 2016-06-29 | 希姆通信息技术（上海）有限公司 | Temperature regulation apparatus and temperature regulation circuit |
| CN205356708U (en) * | 2016-02-01 | 2016-06-29 | 胡运奇 | Safe electric blanket accuse temperature switch |
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