CN108762338A - Electric pad temperature control equipment - Google Patents
Electric pad temperature control equipment Download PDFInfo
- Publication number
- CN108762338A CN108762338A CN201810923788.1A CN201810923788A CN108762338A CN 108762338 A CN108762338 A CN 108762338A CN 201810923788 A CN201810923788 A CN 201810923788A CN 108762338 A CN108762338 A CN 108762338A
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- China
- Prior art keywords
- temperature
- temperature control
- electronic switch
- electric pad
- control processor
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- 230000005611 electricity Effects 0.000 claims description 13
- 238000002474 experimental method Methods 0.000 claims description 6
- 238000005520 cutting process Methods 0.000 claims description 5
- 238000005485 electric heating Methods 0.000 abstract description 4
- 238000005516 engineering process Methods 0.000 abstract description 4
- 101100236764 Caenorhabditis elegans mcu-1 gene Proteins 0.000 description 8
- 238000010438 heat treatment Methods 0.000 description 4
- 238000000554 physical therapy Methods 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000017525 heat dissipation Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000005070 sampling Methods 0.000 description 2
- 206010037660 Pyrexia Diseases 0.000 description 1
- 230000002457 bidirectional 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
- 230000000694 effects Effects 0.000 description 1
- 230000002045 lasting effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D23/00—Control of temperature
- G05D23/19—Control of temperature characterised by the use of electric means
- G05D23/1927—Control of temperature characterised by the use of electric means using a plurality of sensors
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D23/00—Control of temperature
- G05D23/19—Control of temperature characterised by the use of electric means
- G05D23/1927—Control of temperature characterised by the use of electric means using a plurality of sensors
- G05D23/1928—Control of temperature characterised by the use of electric means using a plurality of sensors sensing the temperature of one space
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B1/00—Details of electric heating devices
- H05B1/02—Automatic switching arrangements specially adapted to apparatus ; Control of heating devices
- H05B1/0202—Switches
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B1/00—Details of electric heating devices
- H05B1/02—Automatic switching arrangements specially adapted to apparatus ; Control of heating devices
- H05B1/0227—Applications
- H05B1/0252—Domestic applications
- H05B1/0272—For heating of fabrics
Abstract
The present invention relates to a kind of electric pad temperature control equipments, belong to electric heating control technology field.The device includes power supply, the first temperature sensor for measuring electric pad real time temperature, the first temperature control processor and the Thermal Cutoffs for the heater wire power supply in electric pad, the first electronic switch and the second electronic switch are equipped between power supply and heater wire, between first electronic switch and the second electronic switch formed and door, the first temperature control processor be used for according to electric pad real time temperature compared with the constant temperature angle value of setting with control the first electronic switch turn-on and turn-off；Further include the second temperature control processor, the second temperature control processor controls the turn-on and turn-off of the second electronic switch for the adjustable pulse signal of output duty cycle.Even if the temperature sensor and Thermal Cutoffs using the existing electric pad of the device fail, the temperature that can also control electric pad maintains safe maximum temperature and is no more than always；To thoroughly ensure that electric pad does not catch fire.
Description
Technical field
The present invention relates to a kind of electric pads（Or blanket）Temperature control equipment, belong to electric heating control technology field.
Background technology
The pad or blanket of electric heating or physical therapy generally use in 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.It utilizes and is 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 sensors 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 sensors and/or disposable Thermal Cutoffs fail or are not provided with,
Electric pad or blanket will necessarily cause to catch fire.
Invention content
The technical problem to be solved by the present invention is to, when the temperature sensor and fuse of existing electric pad or blanket fail,
Ensure electric pad or blanket using when do not catch fire.
In order to solve the above technical problems, technical solution proposed by the present invention is：A kind of electric pad temperature control equipment, including
For in the electric pad heater wire power supply power supply, the first temperature sensor for measuring the electric pad real time temperature,
First temperature control processor and Thermal Cutoffs are equipped with the first electronic switch and the second electronics between the power supply and the heater wire
Switch, forms between first electronic switch and the second electronic switch and door, first temperature control processor are used for according to institute
Electric pad real time temperature is stated compared with the constant temperature angle value of setting to control the turn-on and turn-off of first electronic switch；Also wrap
The second temperature control processor is included, second temperature control processor is for the adjustable pulse signal control of output duty cycle second electricity
The turn-on and turn-off of sub switch.
Using above-mentioned technical proposal electric pad temperature control equipment when state have：
When the electric pad real time temperature is less than the constant temperature angle value, the first temperature control processor control first electricity
Sub switch constant conduction, second temperature control processor first control second electronics with the pulse signal of the 100% the first duty ratios
One set time of constant conduction is switched, the heater wire first according to the set time persistently add with first duty ratio
Electricity；At the end of the set time, second temperature control processor less than the pulse signal of the 100% the second duty ratios again to control
The second electronic switch alternate conduction and shutdown, the heater wire carry out energised in pulses with second duty ratio again；Work as institute
When stating electric pad real time temperature more than or equal to the constant temperature angle value, first temperature control processor controls first electronic cutting
Shutdown, second electronic switch continue the alternate conduction and shutdown；When first temperature sensor and/or temperature are protected
When dangerous silk failure and the first electronic switch constant conduction, the heater wire carries out energised in pulses with second duty ratio.
Further, second duty ratio be by with the pulse signal of a variety of duty ratios to the heater wire into
The electric pad that row energised in pulses obtains reaches the duty ratio of corresponding pulse signal when safe maximum temperature value, and defaults in
In second temperature control processor；The safe maximum temperature value is selected according to artificial experience.
Second duty ratio described above can be obtained by following experimental procedure：
1）Existing electric pad is set to measure the disabler or dismounting of itself real time temperature and Temperature protection power-off；
2）With the pulse signal of a variety of different duties a variety of energised in pulses are imposed to the heater wire；
3）The heater wire is measured to generate heat after a variety of energised in pulses the multiple temperature values reached；
4）The maximum temperature value in the multiple temperature value is screened, empirically judge and filters out safe maximum temperature value；
5）The duty ratio of the pulse signal of the corresponding safe maximum temperature value is found out as second duty ratio and is defaulted in
In second temperature control processor.
The present invention is using the advantageous effect of above-mentioned technical proposal：Due to being especially provided with the second temperature control processor, and lead to
It crosses the second temperature control processor and exports adjustable particular duty cycle pulse signal to control the second electronic switch alternating break-make, with to electricity
The heater wire of heat pad carries out the energised in pulses with particular duty cycle, which is to be obtained beforehand through electric pad
The duty ratio of pulse signal when reaching safer maximum temperature under energised in pulses（That is the second duty ratio）；Therefore make electricity
Heat pad is generated heat according to the linear power-up of existing steady temperature control（Existing constant temperature inner ring control）In addition, it and increases according to can
The fever that discontinuity energised in pulses under the particular duty cycle pulse signal control of tune is formed（New outer shroud control）, accordingly even when
Existing temperature sensor and Thermal Cutoffs failure, can also control the temperature rise of electric pad to one it is safer most
The maximum temperature is maintained to be no more than (whether the maximum temperature rule of thumb can artificially determine safely) always after high-temperature always；
To thoroughly ensure electric pad will not because of only have as existing electric pad the lower temperature rise of linear continuous power-up it is excessively high and
Formation is caught fire.
Improving for above-mentioned technical proposal one be：The range of second duty ratio is 20%-60%, the safe maximum temperature
The range of value is 40-80 DEG C, and the correspondence selection of second duty ratio and the safe maximum temperature value is：When the peace
The second duty ratio is selected as 20% described in when full maximum temperature value is 40 DEG C, when the safe maximum temperature value is 44 DEG C described in
Second duty ratio is selected as 25%, when the safe maximum temperature value is 55 DEG C described in the second duty ratio be selected as 50%, work as institute
The second duty ratio is selected as 60% described in stating when safe maximum temperature value is 80 DEG C.
Above-mentioned technical proposal improve second is that：The range of the constant temperature angle value is 25-50 DEG C, the model of the set time
Enclose is 60-600 seconds.
Improving for above-mentioned technical proposal three be：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.
Improving for above-mentioned technical proposal four be：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.
Improving for above-mentioned technical proposal five be：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 the second electronic switch shutdown.
The present invention is particularly unique to be, for using for the electric pad powered with duty cycle pulse electric current, the present invention
People has found and confirms by experiment giving electric pad (or blanket) according to the pulse current of certain range duty ratios off the beaten trackly
Heater wire（Or silk）The maximum temperature that electric pad reaches in power supply is to fully achieve whether a safer temperature (pacifies
Entirely can be according to artificial empirically determined safety standard), find such and heater strip to be screened in advance by the method for experiment
Pulse power supply reaches the relationship between the duty ratio of pulse letter corresponding to safer maximum temperature.For the solution of this relationship
Releasing is：Because electric pad power up when have heating also have heat dissipation, when heating be equal to heat dissipation when temperature will balance some more
On the maximum temperature point of safety；Even this balance maximum temperature in the case of no constant temperature feedback control there is also and tie up
It holds；For the energised in pulses of different duty, no matter power up how long, electric pad always reach one balance at certain
On one safer maximum temperature point, therefore it can select these corresponding safer maximum temperatures by experiment
The duty ratio of those pulse signals, and energised in pulses is carried out to electric pad to control with the pulse signal of this duty ratio.
It is based on discovery unique in this way, inventor furthers investigate and passes through and obtained for many years using summary and repetition test
The device of aforementioned present invention is obtained.Even if it can be said that the temperature control using the existing electric pad of the device of the invention and Temperature protection
The entirely ineffective safety that can also ensure completely in electric pad use, successfully solve existing electric pad makes because of various reasons
In the case that temperature sensor and disposable Thermal Cutoffs fail temperature increase it is out of control and the problem of catch fire.For existing electric heating
For the temperature safety for padding (or blanket), change not less than for the technology of an essence.
Description of the drawings
The electric pad temperature control equipment of the present invention is described further below in conjunction with the accompanying drawings.
Fig. 1 is the circuit diagram of one electric pad temperature control equipment of embodiment；
Fig. 2 is the circuit diagram of two electric pad temperature control equipment of embodiment.
Specific implementation mode
Embodiment one
The electric pad temperature control equipment of the present embodiment, as shown in Figure 1, including for the heater wire in electric pad（Or silk）Power supply
Power supply, the first temperature sensor Res Thermal-1 and the first temperature control processor MCU1 for measuring electric pad real time temperature,
Electric pad has disposable temperature fuse wire F5.Power supply through Transformer Rectifier after alternating current 220V access control apparatus by forming confession
Electricity output.The first electronic switch BTA08-1 and the second electronic switch BTA08-2, the first electronics are equipped between power supply and heater wire
Formation and door between switch BTA08-1 and the second electronic switch BTA08-2（It is connected between power supply and heater strip）.First temperature control
Processor MCU1 is used to control the conducting of the first electronic switch BTA08-1 compared with set temperature value according to electric pad real time temperature
And shutdown.The output end that the input terminal of first electronic switch BTA08-1 passes through optocoupler TRIAC1 and the first temperature control processor MCU1
（Pin HEATER）Connection.The input terminal of second electronic switch BTA08-2 passes through optocoupler TRIAC2 and the second temperature control processor
The output end of MCU2（Pin PA5）Connection.The first electronic switch BTA08-1 and the second electronic switch BTA08-2 of the present embodiment
It is all made of bidirectional triode thyristor.
As shown in Figure 1, further including the second temperature control processor MCU2, and it is provided with keyboard decoding device DECODER
KEYBOARD.By DECODER KEYBOARD for inputting constant temperature angle value to the first temperature control processor MCU1 in use（When
So constant temperature angle value can also be solidificated in MCU1 in advance）.Solidification in advance is set certain in second temperature control processor MCU2
The duty ratio setting value of range and set time etc..Second temperature control processor MCU2 is used to pass through output duty cycle pulse signal control
Make the turn-on and turn-off of second electronic switch.The constant temperature angle value Application Range of the present embodiment is 25-50 DEG C, the set time
Range is selected as 60-600 seconds, and constant temperature angle value and the range of set time can be obtained empirically or experimentally.
As shown in Figure 1, output end J1, J2 access of the first electronic switch BTA08-1 and the second electronic switch BTA08-2 is whole
Flow device DL1, the output end connection heater wire RT1/RT2 of rectifier Bridge1/RS507.
The electric pad temperature control equipment of the present embodiment is when electric pad uses：
Starting up, when the electric pad real time temperature that the first temperature sensor Res Thermal-1 are measured is less than the constant of setting
Temperature value（Such as 50 DEG C）When, the port HEATER of the first temperature control processor MCU1 exports low level signal, the first electronic switch
BTA08-1 is connected, and the input terminal PA2 of the second temperature control processor MCU2 receives the low level of HEATER outputs and from port at this time
PA5 first exports the 100% the first duty ratios（I.e. full duty ratio）Low level pulse signal makes the second electronic switch BTA08-2 while leading
Logical, power supply is continued by the first electronic switch BTA08-1 and the second electronic switch BTA08-2 of conducting to heater wire RT1/RT2
Power up a set time（Such as 150 seconds）.
At the end of between when clamped, the port PA5 of the second temperature control processor MCU2 output is less than the 100% the second duty ratios
Low level pulse signal makes the second electronic switch BTA08-2 be in the state of alternate conduction and shutdown, and power supply passes through conducting at this time
The first electronic switch BTA08-1 and pulse discontinuity conducting the second electronic switch BTA08-2 to heater wire RT1/RT2 implement
Energised in pulses.
When the electric pad real time temperature that the first temperature sensor Res Thermal-1 are measured is more than or equal to the constant temperature of setting
When angle value, the port HEATER of the first temperature control processor MCU1 exports high level signal, and the first electronic switch BTA08-1 is turned off,
Its output end J2 disconnects and enters the access of rectifier DL1）, power supply stops powering up to heater wire RT1/RT2, but the second temperature control at this time
The port PA5 of processor MCU2, which still exports the low level pulse signal less than the 100% the second duty ratios, makes the second electronic switch
BTA08-2 is still within alternate conduction and the state of shutdown.
When the first temperature sensor Res Thermal-1 or/and temperature fuse wire F5 failures lead to the first electronics
When switch BTA08-1 normal opens, the second temperature control processor MCU2 controls first electronic switch BTA08-1 of the power supply by normal open at this time
Energised in pulses is implemented to heater wire RT1/RT2 with the second electronic switch BTA08-2 of pulse discontinuity conducting.
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, work as second temperature sensor
When the environment real time temperature that ResThermal-2 is measured is more than or equal to environment temperature limit value, the second temperature control processor MCU2 can be straight
Connect control the second electronic switch BTA08-2 shutdowns.The environment temperature limit value selection of the present embodiment is 35 DEG C, the environment temperature limit value
It is selected according to artificial experience, it is not limited to 35 DEG C.
In the present embodiment, the first temperature sensor Res Thermal-1, the first temperature control processor MCU1, the first electronic cutting
It closes BTA08-1 and the first set temperature value forms temperature scaling factor（This is that traditional inner ring temperature controls）.In tradition
Other than the control of circumstance temperature degree, the second temperature control processor MCU2, the second electronic switch BTA08-2 then form the control of outer shroud temperature.Outside
The control of circumstance temperature degree may insure, even if under the control of inner ring temperature and/or disposable Thermal Cutoffs failure conditions, still may be used completely
To ensure that temperature of the electric pad after lasting power-up reaches safety standard, to thoroughly prevent the generation that electric pad catches fire.
The second duty ratio in the present embodiment is added by carrying out pulse 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 that electricity obtains, and default in the second temperature control processing
In device MCU2；The general safe maximum temperature value is selected according to artificial experience.Second duty ratio is obtained by following experimental procedure：
1）Existing electric pad is set to measure the disabler or dismounting of itself real time temperature and Temperature protection power-off；
2）With the pulse signal of a variety of different duties a variety of energised in pulses are imposed to heater wire RT1/RT2；
3）Heater wire RT1/RT2 is measured to generate heat after a variety of energised in pulses the multiple temperature values reached；
4）The maximum temperature value in multiple temperature values is screened, empirically judge and filters out safe maximum temperature value；
5）The duty ratio of the pulse signal of the corresponding safe maximum temperature value is found out as the second duty ratio and defaults in the second temperature
It controls in processor MCU2.
Second duty cycle range of the present embodiment is selected as 20%-60%, and the range of safe maximum temperature value is 40-80 DEG C.
Second duty ratio specific choice is carried out according to the correspondence of itself and safe maximum temperature value, and the correspondence of the two has：When
Safe maximum temperature value can select the second duty ratio when being 40 DEG C be 20%, and is selected when safe maximum temperature value is 44 DEG C
Two duty ratios are 25%, and it is 50% that the second duty ratio is selected when safe maximum temperature value is 55 DEG C, when safe maximum temperature value is
It is 60% that the second duty ratio can be selected at 80 DEG C.
Embodiment two
The electric pad temperature control equipment of the present embodiment is improvement on the basis of embodiment one, as shown in Fig. 2, increasing negative electricity
Position generating unit.The output end of the input terminal connection power supply of negative potential generating unit, alternating current 220V is exported occurs list to negative potential
The output end of member, negative potential generating unit is connected at the negative electricity bit line in electric pad after multiplication of voltage（Output port in Fig. 2
5）, to add negative potential to electric pad, can be used for physical therapy.
The service condition and embodiment one of the electric pad temperature control equipment of the present embodiment are essentially identical, the difference is that increasing
The application of function of negative potential physical therapy.
The present invention do not limit to the description in above-described embodiment, such as：1）The second temperature of measuring environment real time temperature passes
Sensor ResThermal-2 can also be saved；2）It is same that keyboard decoding device DECODER KEYBOARD can also save or replace other
The loader of sample function is certain to the second temperature control processor MCU2 inputs by keyboard decoding device DECODER KEYBOARD
The duty ratio setting value of range and set time；3）Other electronic cuttings just may be used in first electronic switch and the second electronic switch
It closes and substitutes；4）35 DEG C of environment temperature limit value can also be other numerical value；Etc..It is all to be fallen using equivalent or equivalence replacement means
Enter protection scope of the present invention.
Claims (9)
1. a kind of electric pad temperature control equipment includes for the power supply of the heater wire power supply in the electric pad, for measuring
The first temperature sensor, the first temperature control processor and the Thermal Cutoffs of electric pad real time temperature are stated, the power supply adds with described
It is equipped with the first electronic switch and the second electronic switch between hot line, is formed between first electronic switch and the second electronic switch
With door, first temperature control processor be used for according to the electric pad real time temperature compared with the constant temperature angle value of setting with control
The turn-on and turn-off of first electronic switch；It is characterized in that：Further include the second temperature control processor, the second temperature control processing
Device controls the turn-on and turn-off of second electronic switch for the adjustable pulse signal of output duty cycle.
2. electric pad temperature control equipment according to claim 1, it is characterised in that the electric pad using when state have：
When the electric pad real time temperature is less than the constant temperature angle value, first temperature control processor controls first electronic cutting
Close constant conduction, second temperature control processor first controls second electronic switch with the pulse signal of the 100% the first duty ratios
One set time of constant conduction, the heater wire first carry out continuing power-up according to the set time with first duty ratio；
At the end of the set time, second temperature control processor is again with less than described in the control of the pulse signal of the 100% the second duty ratios
Second electronic switch alternate conduction and shutdown, the heater wire carry out energised in pulses with second duty ratio again；When the electricity
When heat pad real time temperature is more than or equal to the constant temperature angle value, first temperature control processor controls first electronic switch and closes
Disconnected, second electronic switch continues the alternate conduction and shutdown；When first temperature sensor and/or Thermal Cutoffs
When failure and the first electronic switch constant conduction, the heater wire carries out energised in pulses with second duty ratio.
3. electric pad temperature control equipment according to claim 2, it is characterised in that:Second duty ratio be by with
The electric pad that the pulse signal of a variety of duty ratios carries out the heater wire energised in pulses acquisition reaches safe highest
The duty ratio of corresponding pulse signal when temperature value, and default in second temperature control processor；The safe maximum temperature
Value is selected according to artificial experience.
4. electric pad temperature control equipment according to claim 3, it is characterised in that:The range of second duty ratio is
The range of 20%-60%, the safe maximum temperature value are 40-80 DEG C, second duty ratio and the safe maximum temperature value
Correspondence selection be：The second duty ratio is selected as 20% described in when the safe maximum temperature value is 40 DEG C, when the peace
The second duty ratio is selected as 25% described in when full maximum temperature value is 44 DEG C, when the safe maximum temperature value is 55 DEG C described in
Second duty ratio is selected as 50%, when the safe maximum temperature value is 80 DEG C described in the second duty ratio be selected as 60%.
5. according to the electric pad temperature control equipment of claim 3 or 4, it is characterised in that：Second duty ratio is to pass through
Following experimental procedure obtains：
1）Existing electric pad is set to measure the disabler or dismounting of itself real time temperature and Temperature protection power-off；
2）With the pulse signal of a variety of different duties a variety of energised in pulses are imposed to the heater wire；
3）The heater wire is measured to generate heat after a variety of energised in pulses the multiple temperature values reached；
4）The maximum temperature value in the multiple temperature value is screened, empirically judge and filters out safe maximum temperature value；
5）The duty ratio of the pulse signal of the corresponding safe maximum temperature value is found out as second duty ratio and is defaulted in
In second temperature control processor.
6. electric pad temperature control equipment according to claim 2, it is characterised in that：The range of the constant temperature angle value is
25-50 DEG C, the range of the set time is 60-600 seconds.
7. according to any electric pad temperature control equipment of claim 1-4, it is characterised in that:First electronic cutting
It closes and is connected respectively with first temperature control processor and the second temperature control processor by optocoupler with the input terminal of the second electronic switch
It connects, the output end of first electronic switch and the second electronic switch accesses rectifier, and the output end of the rectifier connects institute
State heater wire.
8. according to any electric pad temperature control equipment of claim 1-4, it is characterised in that:The power supply with it is described
Negative potential generating unit is additionally provided between heater wire, the input terminal of the negative potential generating unit connects the output of the power supply
End, the output end of the negative potential generating unit are connected at the negative electricity bit line in the electric pad after multiplication of voltage.
9. according to any electric pad temperature control equipment of claim 1-4, it is characterised in that:Further include for measuring
The second temperature sensor of environment real time temperature, second temperature control processor is preset with environment temperature limit value, when the environment
When real time temperature is more than or equal to the environment temperature limit value, second temperature control processor controls second electronic switch and closes
It is disconnected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810923788.1A CN108762338A (en) | 2018-08-14 | 2018-08-14 | Electric pad temperature control equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810923788.1A CN108762338A (en) | 2018-08-14 | 2018-08-14 | Electric pad temperature control equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108762338A true CN108762338A (en) | 2018-11-06 |
Family
ID=63969857
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810923788.1A Pending CN108762338A (en) | 2018-08-14 | 2018-08-14 | Electric pad temperature control equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108762338A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114740920A (en) * | 2022-03-22 | 2022-07-12 | 上海欧菲智能车联科技有限公司 | Heating control circuit, heating control method and related device |
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