CN109143889A - Obtain the pulse duty factor experimental method of electric pad energised in pulses - Google Patents
Obtain the pulse duty factor experimental method of electric pad energised in pulses Download PDFInfo
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- CN109143889A CN109143889A CN201810924778.XA CN201810924778A CN109143889A CN 109143889 A CN109143889 A CN 109143889A CN 201810924778 A CN201810924778 A CN 201810924778A CN 109143889 A CN109143889 A CN 109143889A
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- energised
- pulses
- maximum temperature
- duty ratio
- pulse signal
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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 present invention relates to a kind of pulse duty factor experimental methods for obtaining electric pad energised in pulses, belong to electric heating control technology field.This method is: 1) existing electric blanket being made to measure the disabler or dismounting of itself real time temperature and insurance power-off；2) it is controlled with the pulse signal of a variety of different duties and carries out energised in pulses to existing electric blanket；3) existing electric blanket is measured to generate heat after energised in pulses multiple temperature values achieved；4) maximum temperature value in multiple temperature values is found out, empirically judge and filters out safe maximum temperature value；5) pulse signal for finding out corresponding safe maximum temperature value, obtains the duty ratio of the pulse signal.It can select the duty ratio of those of these corresponding safer maximum temperatures pulse signal using this method, and energised in pulses is carried out to electric pad to control with the pulse signal of this duty ratio, to provide powerful guarantee using the safety of energised in pulses for electric pad.
Description
Technical field
The present invention relates to the pulses corresponding when energised in pulses reaches safe maximum temperature of a kind of electric blanket or electric pad
The experiment acquisition methods of signal dutyfactor, belong to electric heating control technology field.
Background technique
The pad or blanket of electric heating or physical therapy have generally used in people's daily life.This electricity heating bed one
As be all constant-temperature temperature-control type, control constant temperature angle value be set between 25 DEG C ~ 50 DEG C.Using being mounted in this temperature range
For temperature sensor in pad or blanket to heating temperature real-time sampling, sampled value is compared with the temperature value of setting realizes temperature certainly
It is dynamic to adjust, to reach constant temperature purpose.This temperature control is the mode being commonly used, and one is generally installed in pad or blanket
Point sampling NTC temperature sensor and a disposable warm Thermal Cutoffs of limit.Once disposable Thermal Cutoffs fails for NTC
Limiting temperature is no more than defined ceiling temperature value, to play the role of protected by temperature limitation.However a disposable Thermal Cutoffs is only
The temperature to a point can be adopted, cannot reflect the temperature of entire cushion, therefore reliability is had a greatly reduced quality, if installed in cushion
The certain reliability of disposable Thermal Cutoffs much put increases, but the high and internal cabling of cost of manufacture becomes complicated,
It is implemented in technique relatively difficult.When NTC temperature sensor and/or fuse fail or are not provided with, electric pad or blanket
It necessarily will cause and catch fire.
Summary of the invention
The technical problem to be solved by the present invention is to reach safe maximum temperature when using energised in pulses for electric pad and provide conjunction
The duty ratio of suitable pulse signal and a kind of method is provided, so that it is guaranteed that electric pad or blanket do not catch fire when using energised in pulses.
In order to solve the above technical problems, the present invention proposes that technical solution is: a kind of pulse obtaining electric pad energised in pulses
Duty ratio experimental method, comprising the following steps:
1) existing electric blanket is made to measure the disabler or dismounting of itself real time temperature and insurance power-off；
2) it is controlled with the pulse signal of a variety of different duties and carries out energised in pulses to the existing electric blanket；
3) the existing electric blanket is measured to generate heat after energised in pulses multiple temperature values achieved；
4) maximum temperature value in the multiple temperature value is found out, empirically judge and filters out safe maximum temperature value；
5) pulse signal for finding out the corresponding safe maximum temperature value, obtains the duty ratio of the pulse signal.
The present inventor summarizes by application for many years and repetition test discovery, the duty cycle pulse signal of certain ranges
A safer temperature is fully achieved carrying out the maximum temperature that electric pad reaches in energised in pulses to electric pad
(whether the maximum temperature rule of thumb can artificially determine safely, to find such duty in advance by the method for experiment
Reach the relationship between safe maximum temperature than pulse signal and electric pad energised in pulses.Explanation for this relationship is: because
To have heating also to have heat dissipation when electric pad power-up, when heating is equal to heat dissipation, temperature will be balanced safer most at some
On high-temperature point；Even this balance maximum temperature in the case where no constant temperature feedback closed loop is controlled there is also and maintain
?；For the energised in pulses of different duty, no matter be powered on how long, electric pad always reach one balance a certain
On a safer maximum temperature point, therefore it can select that for corresponding to these safer maximum temperatures by experiment
The duty ratio of a little pulse signals, and energised in pulses is carried out to electric pad to control with the pulse signal of this duty ratio.
Based on discovery unique in this way, the present inventor sums up above-mentioned technical solution.The beneficial effect is that: when
When the duty ratio that electric pad techniques described above scheme obtains carries out energised in pulses, even if being protected in existing temperature sensor and temperature
Dangerous silk fails or that under the control protection of temperature sensor and Thermal Cutoffs, the temperature of electric pad does not rise to one more
The maximum temperature will be maintained to be no more than always always after the maximum temperature of safety, to thoroughly guarantee that electric pad not will form mistake
Fire.Therefore, above-mentioned technical proposal of the invention has been provided using the safety of energised in pulses and has been tried hard to keep for electric blanket or electric pad
Barrier.
Further, experimental method of the invention is built using following experimental facilities: electric blanket one, two, cotton-wadded quilt,
One, Simulation Control instrument, clamp on amperemeter one, put thermometer three, e-link32 emulator one, one, computer；Electric heating
Blanket is placed on a cotton-wadded quilt, covers another cotton-wadded quilt again on electric blanket, the control line of Simulation Control instrument has been connect with electric blanket
Come, artificial line and the e-link32 emulator of Simulation Control instrument is connected, the usb line and computer of e-link32 emulator
It connects, the probe of warm table and the heater wire of electric blanket is connected.
Described the 2) in step, further includes being powered to the Simulation Control instrument and computer；
2) and the 3) between step described the, further include the dutyfactor value that a variety of different pulse signals are arranged in computer, programming
The pulse signal of different duty value is exported to Simulation Control instrument, is then output to electric blanket power-up；
Described the 3) in step, and the temperature value for putting warm table is read in measurement after electric pad energised in pulses 24 hours.
Environment temperature when experiment is 30 DEG C, and the range of the safe maximum temperature value is 40-80 DEG C, the duty ratio
Range is 20%-60%；The corresponding relationship of the duty ratio and the safe maximum temperature value has:
When the duty ratio is 3/5, the energised in pulses 24 hours safe maximum temperature values are 79.8 DEG C；
When the duty ratio is 5/9, the energised in pulses 24 hours safe maximum temperature values are 66.6 DEG C；
When the duty ratio is 1/2, the energised in pulses 24 hours safe maximum temperature values are 54.8 DEG C；
When the duty ratio is 1/3, the energised in pulses 24 hours safe maximum temperature values are 47.8 DEG C；
When the duty ratio is 1/4, the energised in pulses 24 hours safe maximum temperature values are 43.5 DEG C；
When the duty ratio is 1/5, the energised in pulses 24 hours safe maximum temperature values are 41 DEG C.
Specific embodiment
Embodiment
The pulse duty factor experimental method of the acquisition electric pad energised in pulses of the present embodiment is as follows:
One: experimental facilities
Existing electric blanket one, one, Simulation Control instrument, clamp on amperemeter one, puts thermometer three, e- by two, cotton-wadded quilt
Link32 emulator one, one, computer (including simulation Software Platform HT-IDE3000)；
Two: experimental facilities is built
A cotton-wadded quilt is put on floor, and electric blanket is placed on cotton-wadded quilt, bed cotton-wadded quilt of lid again on electric blanket, by Simulation Control instrument
Control line connected with electric blanket, artificial line and the e-link32 emulator of Simulation Control instrument are connected, then e-
Usb line and the computer of link32 emulator connect, and the probe of warm table and the heater wire of electric blanket are connected；
Three: experiment the following steps are included:
1) existing electric pad is made to measure the disabler or dismounting of itself real time temperature and insurance power-off；
2) it is controlled with the pulse signal of a variety of different duties and carries out energised in pulses to the existing electric blanket；
3) the existing electric blanket is measured to generate heat after different energised in pulses multiple temperature values achieved；
4) maximum temperature value in the multiple temperature value is found out, empirically judge and filters out safe maximum temperature value；
5) the corresponding pulse signal for filtering out safe maximum temperature value is found out, the duty ratio of the pulse signal is obtained.
Above-mentioned the 2) in step, further includes that computer is powered to Simulation Control instrument.
2) and the 3) between step above-mentioned the, further include the dutyfactor value that a variety of different pulse signals are arranged in computer,
The pulse signal of programming output different duty value is then output to electric blanket power-up to Simulation Control instrument.
Above-mentioned the 3) in step, and the temperature value for putting warm table is read in measurement after electric pad energised in pulses 24 hours.
Environment temperature when experiment is 30 DEG C, and safe maximum temperature range is 40-80 DEG C, and the range of duty ratio is 20%-
60%；The present embodiment selects the ratio experimental data of one group of duty pulse signal control power-up as follows:
When the duty ratio of the pulse signal is 3/5,24 hours maximum temperature values of the energised in pulses are 79.8 DEG C；
When the duty ratio of the pulse signal is 5/9,24 hours maximum temperature values of the energised in pulses are 66.6 DEG C；
When the duty ratio of the pulse signal is 1/2,24 hours maximum temperature values of the energised in pulses are 54.8 DEG C；
When the duty ratio of the pulse signal is 1/3,24 hours maximum temperature values of the energised in pulses are 47.8 DEG C；
When the duty ratio of the pulse signal is 1/4,24 hours maximum temperature values of the energised in pulses are 43.5 DEG C；
When the duty ratio of the pulse signal is 1/5,24 hours maximum temperature values of the energised in pulses are 41 DEG C.
Obviously, the present embodiment not only includes above-mentioned experimental result data, for example, environment temperature is not 30 DEG C but other
When temperature, and when the duty ratio of pulse signal takes other numerical value, other more experimental result datas are had.Above-mentioned experiment
Result data is merely to illustrating the present embodiment experimental method and providing, there are also many for actual experimental result data.But safety
The range of maximum temperature value and the range of duty ratio are by summarizing substantially above-mentioned numberical range.
Claims (4)
1. a kind of pulse duty factor experimental method for obtaining electric pad energised in pulses, comprising the following steps:
1) existing electric blanket is made to measure the disabler or dismounting of itself real time temperature and insurance power-off；
2) it is controlled with the pulse signal of a variety of different duties and carries out energised in pulses to the existing electric blanket；
3) the existing electric blanket is measured to generate heat after energised in pulses multiple temperature values achieved；
4) maximum temperature value in the multiple temperature value is found out, empirically judge and filters out safe maximum temperature value；
5) pulse signal for finding out the corresponding safe maximum temperature value, obtains the duty ratio of the pulse signal.
2. obtaining the pulse duty factor experimental method of electric pad energised in pulses according to claim 1, it is characterised in that use
Following experimental facilities is built: electric blanket one, two, cotton-wadded quilt, one, Simulation Control instrument, clamp on amperemeter one, putting temperature
Three, table, e-link32 emulator one, one, computer；Electric blanket is placed on a cotton-wadded quilt, is covered again on electric blanket another
Bed cotton-wadded quilt, the control line of Simulation Control instrument is connected with electric blanket, artificial line and the e-link32 of Simulation Control instrument are imitated
True device connects, and usb line and the computer of e-link32 emulator are connected, by the probe of warm table and electric blanket plus
Hot line connection.
3. obtaining the pulse duty factor experimental method of electric pad energised in pulses according to claim 2, it is characterised in that:
Described the 2) in step, further includes being powered to the Simulation Control instrument and computer；
2) and the 3) between step described the, further include the dutyfactor value that a variety of different pulse signals are arranged in computer, programming
The pulse signal of different duty value is exported to Simulation Control instrument, is then output to electric blanket power-up；
Described the 3) in step, measures the electric pad energised in pulses and reads the temperature value for putting warm table after 24 hours.
4. according to claim 1, the 2 or 3 pulse duty factor experimental method for obtaining electric pad energised in pulses, feature exist
In: environment temperature when experiment is 30 DEG C, and the range of the safe maximum temperature value is 40-80 DEG C, the range of the duty ratio
It is 20%-60%；The corresponding relationship of the duty ratio and the safe maximum temperature value has:
When the duty ratio is 3/5, the energised in pulses 24 hours safe maximum temperature values are 79.8 DEG C；
When the duty ratio is 5/9, the energised in pulses 24 hours safe maximum temperature values are 66.6 DEG C；
When the duty ratio is 1/2, the energised in pulses 24 hours safe maximum temperature values are 54.8 DEG C；
When the duty ratio is 1/3, the energised in pulses 24 hours safe maximum temperature values are 47.8 DEG C；
When the duty ratio is 1/4, the energised in pulses 24 hours safe maximum temperature values are 43.5 DEG C；
When the duty ratio is 1/5, the energised in pulses 24 hours safe maximum temperature values are 41 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| 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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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| 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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| CN109143889A true CN109143889A (en) | 2019-01-04 |
| CN109143889B CN109143889B (en) | 2023-03-17 |
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