CN208506612U - Electric blanket temperature control device - Google Patents
Electric blanket temperature control device Download PDFInfo
- Publication number
- CN208506612U CN208506612U CN201821309188.8U CN201821309188U CN208506612U CN 208506612 U CN208506612 U CN 208506612U CN 201821309188 U CN201821309188 U CN 201821309188U CN 208506612 U CN208506612 U CN 208506612U
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- CN
- China
- Prior art keywords
- electronic switch
- temperature control
- temperature
- duty ratio
- electric blanket
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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.)
- Withdrawn - After Issue
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- 230000005611 electricity Effects 0.000 claims description 6
- 238000010438 heat treatment Methods 0.000 claims description 3
- 238000005485 electric heating Methods 0.000 abstract description 6
- 230000004224 protection Effects 0.000 abstract description 6
- 230000015572 biosynthetic process Effects 0.000 abstract description 3
- 238000005516 engineering process Methods 0.000 abstract description 2
- 230000009977 dual effect Effects 0.000 abstract 1
- 238000005259 measurement Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000000554 physical therapy Methods 0.000 description 2
- 238000005070 sampling Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
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- Control Of Resistance Heating (AREA)
- Control Of Temperature (AREA)
Abstract
The utility model relates to a kind of electric blanket temperature control devices, belong to electric heating control technology field.The device includes the power supply for the heater wire power supply in electric blanket, and the first electronic switch and the second electronic switch are equipped between power supply and the heater wire；Formation and door between first electronic switch and the second electronic switch, without the first temperature sensor, the first temperature control processor and the Thermal Cutoffs for measuring and controlling electric blanket real time temperature, it further include the second temperature control processor, second temperature control processor controls the first electronic switch and the equal alternate conduction of the second electronic switch and shutdown less than the pulse signal of 100% duty ratio for output numerical value, and heater wire carries out energised in pulses with the duty ratio.It is completely free of the thermostatic control of existing electric pad and the so-called dual fail-safe controlling mechanism of Temperature protection power-off protection using the device, not only can guarantee the safety in electric pad use, but also enormously simplify the structure of electric blanket.
Description
Technical field
The utility model relates to a kind of electric blanket or the temperature control equipments of electric pad, 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 blanket or pad 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 blanket or pad
It necessarily will cause and catch fire.
Summary of the invention
The technical problems to be solved in the utility model be propose it is a kind of without existing thermostatic control and Thermal Cutoffs
Protection, is also ensured the electric blanket or pad not caught fire when use.
In order to solve the above technical problems, the utility model proposes technical solution be: a kind of electric blanket temperature control device,
Including the power supply for the heater wire power supply in the electric blanket, the first electronic switch is equipped between the power supply and the heater wire
With the second electronic switch；Formation and door between first electronic switch and the second electronic switch, without for measuring and controlling
The first temperature sensor, the first temperature control processor and the Thermal Cutoffs of the electric blanket real time temperature, further include the second temperature control
Processor, second temperature control processor control first electronics less than the pulse signal of 100% duty ratio for output numerical value
Switch and the equal alternate conduction of the second electronic switch and shutdown, the heater wire carry out energised in pulses with the duty ratio.
Further, the duty ratio is by being carried out with the pulse signal of a variety of duty ratios to the heater wire
The electric pad that energised in pulses obtains reaches the duty ratio of corresponding pulse signal when safe maximum temperature, and defaults in described
In second temperature control processor, the safe maximum temperature value is selected according to artificial experience.
The beneficial effect of the utility model by adopting the above technical scheme is: due to fully phasing out (omission) existing electric blanket
The first temperature sensor for measuring and controlling the electric blanket real time temperature that (or pad) is generallyd use, at the first temperature control
Device and Thermal Cutoffs are managed, instead is provided with second temperature sensor, and is directly defeated by the second temperature control processor
Duty ratio adjustable pulse signal controls the first electronic switch and the equal alternate conduction of the second electronic switch and shutdown out, to electric heating
The heater wire of pad directly carries out the energised in pulses with particular duty cycle, which is to be obtained beforehand through electric heating
Pad the duty ratio of pulse signal when reaching safer maximum temperature under energised in pulses；Therefore electric heating can be directly controlled
The temperature of pad maintains always the maximum temperature to be no more than the (maximum temperature always after rising to a safer maximum temperature
Whether safety rule of thumb can be determined artificially)；Thermostatic control is relied on (i.e. in fact to thoroughly get rid of existing electric blanket (or pad)
When measurement blanket closed-loop control of the temperature with setting steady temperature compared with) and Temperature protection power-off protection control, as long as according to pre-
If particular duty cycle pulse signal to electric blanket be powered on generate heat, will not just be held because of only linear as existing electric pad
The continuous lower temperature of power-up rises too high and is formed and caught fire.
Above-mentioned technical proposal improve first is that: the range of the duty ratio is 20%-60%, the safe maximum temperature value
Range is 40-80 DEG C, and the corresponding relationship selection of the duty ratio and the safe maximum temperature value is: when the safe highest temperature
Angle value when being 40 DEG C the duty ratio be selected as 20%, when the safe maximum temperature value is 44 DEG C, the duty ratio is selected as
25%, when the safe maximum temperature value is 55 DEG C, the duty ratio is selected as 50%, when the safe maximum temperature value is 80
DEG C when the duty ratio be selected as 60%.
Above-mentioned technical proposal improve second is that: the input terminal of first electronic switch and the second electronic switch passes through light
Coupling is connect with first temperature control processor and the second temperature control processor respectively, first electronic switch and the second electronic switch
Output end access rectifier, the output end of the rectifier connects the heater wire.
Above-mentioned technical proposal improve third is that: negative potential generating unit is additionally provided between the power supply and the heater wire,
The input terminal of the negative potential generating unit connects the output end of the power supply, and the output end of the negative potential generating unit is through again
The negative electricity bit line being connected at after pressure in the electric pad.
Above-mentioned technical proposal improve fourth is that: further include the second temperature sensor for measuring environment real time temperature, institute
It states the second temperature control processor and is preset with environment temperature limit value, when the environment real time temperature is more than or equal to the environment temperature limit value
When, second temperature control processor controls first electronic switch and the second electronic switch is turned off.
Detailed description of the invention
The electric blanket temperature control device of the utility model is described further with reference to the accompanying drawing.
Fig. 1 is the circuit diagram of one electric blanket temperature control device of embodiment；
Fig. 2 is the circuit diagram of two electric blanket temperature control device of embodiment.
Specific embodiment
Embodiment one
The electric blanket temperature control device of the present embodiment, as shown in Figure 1, including the electricity for the heater wire power supply in electric blanket
Source, power supply after alternating current 220V access control apparatus through Transformer Rectifier by forming for electricity output.Equipped with the second temperature control processor, but not
Measurement is commonly used in including existing electric blanket and controls the first temperature sensor of electric blanket real time temperature, the first temperature control processing
Device and Thermal Cutoffs.The first electronic switch BTA08-1 and the second electronic switch BTA08-2 is equipped between power supply and heater wire,
Formation and door (being connected between power supply and heater strip) between first electronic switch BTA08-1 and the second electronic switch BTA08-2.
The input terminal of first electronic switch BTA08-1 and the second electronic switch BTA08-2 by optocoupler TRIAC1 and TRIAC2 respectively with
The output end (pin PA5) of second temperature control processor MCU2 connects.It is additionally provided with keyboard decoding device and crosses DECODER KEYBOARD.
Duty ratio setting value solidifies in advance to be arranged in the second temperature control processor MCU2, naturally it is also possible to pass through DECODER KEYBOARD
To the second temperature control processor MCU2 input duty cycle setting value.In this way, the second temperature control processor MCU2 may be used for output number
Value replaces less than pulse signal control the first electronic switch BTA08-1 and the second electronic switch BTA08-2 of 100% duty ratio
Turn-on and turn-off.Output end J1, J2 of first electronic switch BTA08-1 and the second electronic switch BTA08-2 access rectifier
The output end of Bridge1/RS507, rectifier Bridge1/RS507 connect heater wire RT1/RT2.
The electric blanket temperature control device of the present embodiment is when electric pad uses:
The port PA5 output of starting up, the second temperature control processor MCU2 are believed less than the low level pulse of 100% duty ratio
Number the first electronic switch BTA08-1 and the second electronic switch BTA08-2 is made to be in the state of alternate conduction and shutdown, it is electric at this time
The the first electronic switch BTA08-1 and the second electronic switch BTA08-2 that source is connected by pulse discontinuity are to heater wire RT1/RT2
Implement energised in pulses.
As shown in Figure 1, being additionally provided with the second temperature sensor ResThermal-2 for measuring environment real time temperature.This reality
An environment temperature limit value can be preset in the second temperature control processor MCU2 by applying example, and the environment temperature limit value of the present embodiment is selected
It is 35 DEG C.When the environment real time temperature of second temperature sensor ResThermal-2 measurement is more than or equal to 35 DEG C of environment temperature limit value
When, the second temperature control processor MCU2 can directly control the first electronic switch BTA08-1 and the second electronic switch BTA08-2 is closed
It is disconnected.
Duty ratio in the present embodiment is obtained by carrying out energised in pulses to heater wire with the pulse signal of a variety of duty ratios
The duty ratio of corresponding pulse signal when electric pad reaches safe maximum temperature obtained, and default in the second temperature control processor
In MCU2；The general safe maximum temperature value is selected according to artificial experience.The duty ratio can be obtained by experiment, range choosing
It is selected as 20%-60%, the range selection of safe maximum temperature value is 40-80 DEG C.The specific choice of the duty ratio is according to itself and peace
Full maximum temperature value passes through the corresponding relationship tested in advance and carries out, and the corresponding relationship of the two has: when safe maximum temperature value
Can choose when being 40 DEG C duty ratio be 20%, it is 25% that duty ratio is selected when safe maximum temperature value is 44 DEG C, when safety most
High temperature value selects duty ratio when being 55 DEG C be 50%, and can choose duty ratio when safe maximum temperature value is 80 DEG C is 60%.
Embodiment two
The electric blanket temperature control device of the present embodiment is improvement on the basis of embodiment one, as shown in Fig. 2, increasing
Negative potential generating unit.The output end of the input terminal connection power supply of negative potential generating unit, the output end of negative potential generating unit
The negative electricity bit line (output port 5 in Fig. 2) being connected at after multiplication of voltage in electric pad, thus add negative potential to electric blanket, it can
For physical therapy.
The utility model do not limit to the description in above-described embodiment, such as: 1) keyboard decoding device DECODER
KEYBOARD can also save or replace the loader of other said functions；2) the first electronic switch and the second electronic switch just may be used
To be substituted using other electronic switches；Etc..All protections that the utility model is each fallen within using equivalent or equivalence replacement means
Range.
Claims (6)
1. a kind of electric blanket temperature control device, including the power supply for the heater wire power supply in the electric blanket, the power supply with
The first electronic switch and the second electronic switch are equipped between the heater wire；First electronic switch and the second electronic switch it
Between formed and door, it is characterised in that: without for measuring and controlling the electric blanket real time temperature the first temperature sensor, the
One temperature control processor and Thermal Cutoffs further include the second temperature control processor, and second temperature control processor is used for output numerical value
First electronic switch and the equal alternate conduction of the second electronic switch and shutdown, institute are controlled less than the pulse signal of 100% duty ratio
It states heater wire and energised in pulses is carried out with the duty ratio.
2. electric blanket temperature control device according to claim 1, it is characterised in that: the duty ratio is by being accounted for a variety of
When the electric pad that the pulse signal of empty ratio carries out energised in pulses acquisition to the heater wire reaches safe maximum temperature
The duty ratio of corresponding pulse signal, and default in second temperature control processor, the safe maximum temperature value is according to people
Work experience is selected.
3. electric blanket temperature control device according to claim 2, it is characterised in that: the range of the duty ratio is 20%-
60%, the range of the safe maximum temperature value is 40-80 DEG C, and the duty ratio is corresponding with the safe maximum temperature value to close
System's selection is: when the safe maximum temperature value is 40 DEG C, the duty ratio is selected as 20%, when the safe maximum temperature value
The duty ratio is selected as 25% when being 44 DEG C, and when the safe maximum temperature value is 55 DEG C, the duty ratio is selected as 50%,
When the safe maximum temperature value is 80 DEG C, the duty ratio is selected as 60%.
4. according to claim 1, the 2 or 3 electric blanket temperature control device, it is characterised in that: first electronic switch with
The input terminal of second electronic switch passes through optocoupler and connect respectively with first temperature control processor and the second temperature control processor, institute
The output end access rectifier of the first electronic switch and the second electronic switch is stated, the output end of the rectifier connects the heating
Line.
5. according to claim 1, the 2 or 3 electric blanket temperature control device, it is characterised in that: the power supply adds with described
Negative potential generating unit is additionally provided between hot line, the input terminal of the negative potential generating unit connects the output end of the power supply,
The output end of the negative potential generating unit is connected at the negative electricity bit line in the electric pad after multiplication of voltage.
6. according to claim 1, the 2 or 3 electric blanket temperature control device, it is characterised in that: further include for measuring ring
The second temperature sensor of border real time temperature, second temperature control processor are preset with environment temperature limit value, when the environment is real
When Shi Wendu is more than or equal to the environment temperature limit value, second temperature control processor controls first electronic switch and second
Electronic switch is turned off.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821309188.8U CN208506612U (en) | 2018-08-14 | 2018-08-14 | Electric blanket temperature control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821309188.8U CN208506612U (en) | 2018-08-14 | 2018-08-14 | Electric blanket temperature control device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208506612U true CN208506612U (en) | 2019-02-15 |
Family
ID=65300902
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821309188.8U Withdrawn - After Issue CN208506612U (en) | 2018-08-14 | 2018-08-14 | Electric blanket temperature control device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208506612U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108762337A (en) * | 2018-08-14 | 2018-11-06 | 滁州国康医疗仪器有限公司 | Electric blanket temperature control device |
| CN110102023A (en) * | 2019-05-09 | 2019-08-09 | 中国康复研究中心 | A kind of ankle-joint warm training aids |
-
2018
- 2018-08-14 CN CN201821309188.8U patent/CN208506612U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108762337A (en) * | 2018-08-14 | 2018-11-06 | 滁州国康医疗仪器有限公司 | Electric blanket temperature control device |
| CN108762337B (en) * | 2018-08-14 | 2024-07-02 | 滁州国康医疗仪器有限公司 | Temperature control device for electric blanket |
| CN110102023A (en) * | 2019-05-09 | 2019-08-09 | 中国康复研究中心 | A kind of ankle-joint warm training aids |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20190215 Effective date of abandoning: 20240702 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20190215 Effective date of abandoning: 20240702 |