CN101098570A - Method and circuit for preventing superheating of heating device - Google Patents
Method and circuit for preventing superheating of heating device Download PDFInfo
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- CN101098570A CN101098570A CNA2006100907014A CN200610090701A CN101098570A CN 101098570 A CN101098570 A CN 101098570A CN A2006100907014 A CNA2006100907014 A CN A2006100907014A CN 200610090701 A CN200610090701 A CN 200610090701A CN 101098570 A CN101098570 A CN 101098570A
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Abstract
The invention relates to a method and a relative circuit, for preventing overheating condition of heating device, wherein a heating circuit is provided with a trigger circuit and a microprocessor, while the trigger circuit is connected with a power supply and a heating device, to heat the heating device. The heating circuit is connected with a temperature fuse, a resistance and a reaction trigger circuit, while another end of the reaction trigger circuit is connected with the microprocessor, to detect the condition of the microprocessor. Therefore, when the microprocessor is damaged, the power supply, temperature fuse and resistance form a circuit, to heat the resistance and break the temperature fuse, to stop heating, and when the microprocessor works normally, to detect a temperature-control switch on the heating circuit and the reaction trigger circuit, to decide to stop heating or not, thereby preventing fire hazard and avoid abnormal high-temperature on the heating device to protect user.
Description
Technical field
What the present invention relates to is a kind of method and circuit that prevents superheating of heating device, especially refer to a kind of by detecting the unusual condition of microprocessor and temperature control switch in advance, to interrupt heater circuit, make electro-heat equipment can not produce the method and the circuit of abnormal high temperature, be useful in electro-heat equipments such as electrothermal furnace, heat-applying blanket and use.
Background technology
See also shown in Figure 3, it is quite general a kind of hot compress pad structure, mainly is one group of upper and lower stacking conductive plate A1 of installing in a bagging, inserts and puts a plurality of ceramic resistor A2 between the two conductive plate A1, outside two conductive plate a1, coat soft high temperature insulation colloid A3 again, to constitute hot compress sheet A.Described ceramic resistor A2 be for positive temperature be number (Positive Temperature Coefficient, PTC) assembly, after two conductive plate A1 energising, owing to the resistance value of PTC assembly can produce rapid variation along with the rising of temperature, when resistance value is enlarged to when electric current can't be circulated, promptly form off state, and reach the control of fixed temperature.
And be to be the 5th, 861, No. 610 patent cases of the U.S. as shown in Figure 4, its outer peripheral edges at a core C coat lead C1, the second insulating barrier C2, detection lines C3 and the first insulating barrier C4 of the heating usefulness of reeling in regular turn, detection lines C3 be for ptc material (nickel alloy) made.When the temperature of the detection lines C3 temperature along with heating wires C1 rises, or Yin Gaowen makes the resistance of detection lines C3 change, all will compare via the comparison circuit in the controller, adjust the magnitude of current of input lead C1 again with comparison result, to control heating temp in the scope that the user sets.
Check and approve case as can be known by above-mentioned two patents, directly generate heat with resistive conductor at present, utilize the characteristic of PTC assembly or quite general with the technology of carrying out temperature control, only the space that still haves much room for improvement of above-mentioned various temperature control methods with detection lines detecting comparison:
1. no matter be to utilize the PTC component characteristic, or utilize detection lines to detect the mode of comparison,, all need after the temperature rising, just can regulate, make temperature decline and answer normal to reach the purpose of temperature control.Yet, when the user when using hot compress pad, though of short duration abnormal high temperature is difficult for producing fire, the potential hazard of scalding the user is arranged under control.
2. above-mentionedly utilize detection lines detecting comparison, in the structure that reaches the temperature control purpose, when controller damages, and can't effectively operate the time, will make that heating wires is uncontrolled and continue to heat, and the danger of breaking out of fire is arranged.
Mirror is arranged at this, in order to improve above-mentioned shortcoming, the unusual condition that makes the method that prevents superheating of heating device and circuit can detect the temperature control assembly in advance, interrupt the circuit of heating, so that electro-heat equipment can not produce abnormal high temperature, to avoid breaking out of fire or scald user, long-pending experience and the constantly research and development improvement for many years of inventor has generation of the present invention then.
Summary of the invention
Main purpose of the present invention is, a kind of method and circuit that prevents superheating of heating device is provided, by when the microprocessor normal operation, detect respectively heater circuit circuits for triggering second switch and the reaction circuits for triggering first switch, can detect the whether normal operation of first and second switch in advance, and when detecting undesired signal, interrupt the heating action, safe in utilization to guarantee.
Secondary objective of the present invention is providing a kind of method and circuit that prevents superheating of heating device; its set overheating protection circuit connects the microprocessor of temperature control; can be when microprocessor damages; Thermal Cutoffs is burnt; and termination continues to add the unusual condition that heat energy is detected microprocessor in advance; make electro-heat equipment can not produce abnormal high temperature, to avoid breaking out of fire or to scald the user.
For reaching the purpose of foregoing invention, the technical solution used in the present invention is, a kind of circuit that prevents superheating of heating device is provided, and it comprises an electro-heat equipment, a heater circuit and an overheating protection circuit.One end of described electro-heat equipment connects power supply, and other holds ground connection.Described heater circuit comprises circuits for triggering and a microprocessor, and described circuits for triggering are connected with power supply and electro-heat equipment, and described microprocessor is connected with an end of described circuits for triggering, for the conducting of control circuit, electro-heat equipment is heated.Described overheating protection circuit comprises reaction circuits for triggering, a resistance and a Thermal Cutoffs; described Thermal Cutoffs is an end that is connected electro-heat equipment; two ends of described resistance are coupled reaction circuits for triggering and Thermal Cutoffs respectively; the end in addition of described reaction circuits for triggering connects microprocessor; with when the microprocessor stop signal is exported; make power supply, Thermal Cutoffs and resistance form the loop, heating resistor heats and end continuation so that Thermal Cutoffs burns.
During enforcement, the circuits for triggering of described heater circuit comprise an electric capacity, a resistance and a second switch of series connection.It is a two-way thyristor (TRIAC) that described second switch is preferably.
During enforcement, described microprocessor is that stop signal exports overheating protection circuit to when second switch short circuit or microprocessor damage itself.
During enforcement; described reaction circuits for triggering comprise interconnective first, second and third npn bipolar transistor; first and second resistance-capacitance (RC) circuit is connected to the base stage of first and second npn bipolar transistor; described first resistance-capacitance (RC) circuit connects microprocessor; and the emitter grounding of described three npn bipolar transistors; the collection utmost point of three npn bipolar transistors connects the power supply after the rectification, and one first switch connects the collection utmost point of the 3rd npn bipolar transistor and a resistance of overheating protection circuit respectively.
During enforcement, it is a two-way thyristor (TRIAC) that described first switch is preferably.One end of described first switch and di-resistance, described two resistance connect microprocessor, and the end in addition of first switch connects a resistance of overheating protection circuit.
Simultaneously also provide a kind of method that prevents superheating of heating device, comprised the following steps: that a. provides an electro-heat equipment, the one end connects power supply, and other holds ground connection; One heater circuit comprises circuits for triggering and a microprocessor, and described circuits for triggering are connected with power supply and electro-heat equipment, and described microprocessor is connected with an end of described circuits for triggering, for the conducting of control circuit, electro-heat equipment is heated; And b. provides an overheating protection circuit; comprise reaction circuits for triggering, a resistance and a Thermal Cutoffs; described Thermal Cutoffs is an end that is connected electro-heat equipment; two ends of described resistance are coupled reaction circuits for triggering and Thermal Cutoffs respectively; the end in addition of described reaction circuits for triggering connects microprocessor, with when microprocessor damages, makes power supply, Thermal Cutoffs and resistance form the loop; heating resistor heats and end continuation so that Thermal Cutoffs burns.
During enforcement, the circuits for triggering of heater circuit comprise an electric capacity, a resistance and a second switch of series connection.
Said method more comprises second switch detecting step, be to make microprocessor stop to export control pulse wave to the second switch of the circuits for triggering of heater circuit, by the reaction of heater circuit, learn whether circuits for triggering maintain normal condition, make the microprocessor decision whether end heating schedule.
During enforcement; described reaction circuits for triggering comprise interconnective first, second and third npn bipolar transistor; first and second resistance-capacitance (RC) circuit is connected to the base stage of first and second npn bipolar transistor; described first resistance-capacitance (RC) circuit connects microprocessor; and the emitter grounding of described three npn bipolar transistors; the collection utmost point of three npn bipolar transistors connects the power supply after the rectification, and one first switch connects the collection utmost point of the 3rd npn bipolar transistor and a resistance of overheating protection circuit respectively.One end of described first switch connects a resistance of microprocessor and overheating protection circuit respectively.
Said method more comprises one first switch detecting step, be to make microprocessor stop to export to reacting the control pulse wave of circuits for triggering and second switch, by detecting the reaction of circuit between first switch and the microprocessor, learn whether first switch maintains normal condition, make the microprocessor decision whether end heating schedule.
The present invention has following advantage:
1, the present invention is when the microprocessor normal operation, by detecting the whether normal operation of first and second switch respectively, can prevent the abnormal second switch short circuit and the first switch not on-state, and is safe in utilization to guarantee;
2, the present invention can detect the unusual condition of microprocessor in advance, end to continue heating, not only can effectively prevent the generation of fire, and avoids electro-heat equipment to produce abnormal high temperature and scald the user.
Below in conjunction with accompanying drawing, be described in more detail with other technical characterictic and advantage the present invention is above-mentioned.
Description of drawings
Fig. 1 is the circuit diagram of embodiments of the invention;
Fig. 2 is the flow chart of embodiments of the invention;
Fig. 3 is the combination section of existing hot compress pad structure;
Fig. 4 is the combination section of the heating line of the 5th, 861, No. 610 patent cases of the existing U.S..
Description of reference numerals: 1-prevents the circuit of superheating of heating device; The 2-electro-heat equipment; The 21-electric heater; The 3-heater circuit; The 31-circuits for triggering; The 32-microprocessor; T1-first switch; The T2-second switch; The 4-overheating protection circuit; 41-reacts circuits for triggering; The 42-Thermal Cutoffs; 43-the one RC circuit; 44-the 2nd RC circuit.
Embodiment
See also shown in Figure 1ly, it comprises an electro-heat equipment 2, a heater circuit 3 and an overheating protection circuit 4 for the preferred embodiment that the present invention prevents the circuit 1 of superheating of heating device.
Described electro-heat equipment 2 comprises that mainly one can produce the electric heater 21 of heat, and an end of described electro-heat equipment 2 connects power supply, and other holds ground connection.
Described heater circuit 3 comprises circuits for triggering 31 and a microprocessor 32, and described circuits for triggering 31 comprise a capacitor C 3, a resistance R 10 and a second switch T2 of series connection, and described second switch T2 is a two-way thyristor (TRIAC).The end ground connection of above-mentioned second switch T2, end connects electro-heat equipment 2 and microprocessor 32 in addition, described second switch T2 and di-resistance (R6, R7), and an end of capacitor C 3 connects microprocessor 32.When microprocessor 32 output controlling signal, conducting second switch T2 to form a loop, makes electric heater 21 heatings of electro-heat equipment 2.Described circuits for triggering 31 also can be the circuit (not shown) that comprises a relay, can reach the effect of heating electro-heat equipment 2 equally.
Described overheating protection circuit 4 comprises reaction circuits for triggering 41, a resistance R 5 and a Thermal Cutoffs 42; one end of described Thermal Cutoffs 42 connects electro-heat equipment 2; end connects power supply in addition, and two ends of resistance R 5 difference coupled reaction circuits for triggering 41 and Thermal Cutoffs 42.Described reaction circuits for triggering 41 comprise first, second and third npn bipolar transistor (Q1, Q2, Q3), the base stage of a described npn bipolar transistor Q1 connects one first resistance-capacitance (RC) circuit 43, and the capacitor C 1 of described RC circuit 43 connects microprocessor 32.And the collection utmost point of a npn bipolar transistor Q1 connects the base stage of one the 2nd RC circuit 44 and the 2nd npn bipolar transistor Q2.The collection utmost point of described the 2nd npn bipolar transistor Q2 connects the base stage of a resistance R 3 and the 3rd npn bipolar transistor Q3.The collection utmost point of described the 3rd npn bipolar transistor Q3 connects a resistance R 4 and a two-way thyristor (TRIAC), and described two-way thyristor is as the first switch T1, and the end ground connection of the described first switch T1 is held the resistance R 5 that connects overheating protection circuit 4 in addition.The emitter-base bandgap grading of above-mentioned first, second and third npn bipolar transistor (Q1, Q2, Q3) is ground connection respectively, the resistance R 2 of described the 2nd RC circuit 44 and two resistance (R3, R4) that connect the collection utmost point of second and third npn bipolar transistor (Q2, Q3) respectively connect simultaneously after the rectification power supply (Vcc) (5V).
In addition, the end of the above-mentioned first switch T1 is except the resistance R 5 that connects overheating protection circuit 4, and simultaneously and di-resistance (R8, R9), a resistance R 9 connects microprocessors 32, another resistance R 9 ground connection.
In the present embodiment, when described microprocessor 32 is in normal operating conditions, it is the controlling signal of sending 50～60Hz frequency, on the one hand via circuits for triggering 31 so that electric heater 21 normal heating of electro-heat equipment 2, on the other hand via a RC circuit 43 formed pulses, control the whether conducting of the collection utmost point of a npn bipolar transistor Q1 and emitter-base bandgap grading with base stage by a npn bipolar transistor Q1.When the controlling signal of being sent when microprocessor 32 is output as High via capacitor C 1, the collection utmost point of the one npn bipolar transistor Q1 and emitter-base bandgap grading conducting (ON), electric current flow to ground connection by Vcc, this moment, the capacitor C 2 of the 2nd RC circuit 44 was discharged, the collector volatge of the one npn bipolar transistor Q1 is Low, make the collection utmost point and the not conducting of emitter-base bandgap grading of the 2nd npn bipolar transistor Q2, the electric current of Vcc (5V) flow to the base stage of the 3rd npn bipolar transistor Q3 through resistance R 3, the collection utmost point of the 3rd npn bipolar transistor Q3 and emitter-base bandgap grading conducting (ON), electric current flow to ground connection by Vcc, the collector volatge of the 3rd npn bipolar transistor Q3 is Low, makes the first not conducting of switch T1 (OFF).
When the controlling signal of being sent when microprocessor 32 is output as Low via capacitor C 1, the collection utmost point of the one npn bipolar transistor Q1 and not conducting of emitter-base bandgap grading (OFF), the capacitor C 2 of the 2nd RC circuit 44 begins charging, after finishing, capacitor C 2 chargings can make the 2nd npn bipolar transistor Q2 conducting, but the present invention is when implementing, by strengthening capacitor C 2 values or reducing resistance R 2 resistances, so that the 2nd RC circuit 44 is done suitable allotment, then can be in the time constant of the 2nd RC circuit 44, make capacitor C 2 remain on charged state, have little time to fill full; That is when importing the controlling signal of 50～60Hz frequency continuously, the base voltage that enters the 2nd npn bipolar transistor Q2 is kept to be hanged down below 0.7V, and making the collection utmost point and the not conducting of emitter-base bandgap grading (OFF) of the 2nd npn bipolar transistor Q2, the first switch T1 maintains the state of OFF.
When microprocessor 32 normal operations, be short circuit and detect circuits for triggering T2, or microprocessor 32 is when machine or when damaging, microprocessor 32 stops the controlling signal output of 50～60Hz frequency, to control the base stage of a npn bipolar transistor Q1.At this moment, the voltage of importing the base stage of a npn bipolar transistor Q1 is Low, make the collection utmost point and the not conducting of emitter-base bandgap grading (OFF) of the 2nd npn bipolar transistor Q2, the collector volatge of the one npn bipolar transistor Q1 is High (5V), continuously the capacitor C 2 of the 2nd RC circuit 44 is charged, filling the collection utmost point and the emitter-base bandgap grading conducting (ON) that makes the 2nd npn bipolar transistor Q2 after full, the collector volatge of the 2nd npn bipolar transistor Q2 is Low (0V), make the collection utmost point and the not conducting of emitter-base bandgap grading (OFF) of the 3rd npn bipolar transistor Q3, the electric current of Vcc (5V) flow to the first switch T1 via the collection utmost point of the 3rd npn bipolar transistor Q3, the first switch T1 conducting (ON) makes resistance R 5 begin heating.When fusion temperature at Thermal Cutoffs 42 of the temperature height of resistance R 5, Thermal Cutoffs 42 fusing fractures make the loop of heater circuit 3 interrupt simultaneously, and stop heating.Microprocessor 32 is controlled light-emitting diode or the message (not shown) of display circuit interruption on display by the electric current that power supply provided.
Please consult Fig. 1, shown in Figure 2 simultaneously, the present invention prevents the method for superheating of heating device, mainly comprises the following steps:
A., one electro-heat equipment 2 is provided, and the one end connects power supply, and other holds ground connection; One heater circuit 3 comprises circuits for triggering 31 and a microprocessor 32, and described circuits for triggering 31 are connected with power supply and electro-heat equipment 2, and described microprocessor 32 is connected with an end of described circuits for triggering 31, for the conducting of control circuit, electro-heat equipment 2 is heated; And
B., one overheating protection circuit 4 is provided; comprise reaction circuits for triggering 41, a resistance R 5 and a Thermal Cutoffs 42; described Thermal Cutoffs 42 is connected with electro-heat equipment 2; two ends of described resistance R 5 are coupled reaction circuits for triggering 41 and Thermal Cutoffs 42 respectively; the end in addition of described reaction circuits for triggering 41 connects microprocessor 32; with when microprocessor 32 stop signals are exported; make power supply, Thermal Cutoffs 42 form the loop with resistance R 5; heating resistor R5 heats and end continuation so that Thermal Cutoffs 42 burns.
During enforcement, except the method for above-mentioned detecting microprocessor 32, more comprise second switch T2 detecting step, be to make microprocessor 32 stop to export control pulse wave to the second switch T2 of the circuits for triggering 31 of heater circuit 3, even second switch T2 is the state of open circuit (OFF), the normal condition that microprocessor 32 detects circuits for triggering 31 1 ends is High, be Low if microprocessor 32 detects circuits for triggering 31 1 ends this moment, can learn that circuits for triggering T2 is short circuit, microprocessor 32 stops the controlling signal of 50～60Hz frequency, end heating schedule, continue heating to avoid electro-heat equipment 2, and produce unusual high temperature.
Moreover, the present invention more comprises one first switch T1 detecting step, be to make microprocessor 32 stop to export to reacting the control pulse wave of circuits for triggering 41 and second switch T2, detect the voltage of circuit between the first switch T1 and the microprocessor 32 simultaneously, this moment, first switch normally was ON, and the voltage of circuit should be shown as Low between the first switch T1 and the microprocessor 32; When the first switch T1 normally was OFF, the voltage of circuit should be shown as High between the first switch T1 and the microprocessor 32; And, represent that then the first switch T1 damages if be shown as low, be the state of conducting (ON).At this moment, microprocessor 32 is promptly ended heating schedule, so that reaction circuits for triggering 41 are after reparation, keeping normal function, by to remain on the operating state that can detect microprocessor 32 at any time.
The above only is preferred embodiment of the present invention, only is illustrative for the purpose of the present invention, and nonrestrictive.Those skilled in the art is understood, and can carry out many changes to it in the spirit and scope that claim of the present invention limited, revise, even equivalence, but all will fall within the scope of protection of the present invention.
Claims (10)
1. a circuit that prevents superheating of heating device comprises, an electro-heat equipment, and the one end connects power supply, and other holds ground connection; It is characterized in that, comprising:
One heater circuit comprises circuits for triggering and a microprocessor, and described circuits for triggering are connected with power supply and electro-heat equipment, and described microprocessor is connected with an end of described circuits for triggering;
One overheating protection circuit; comprise reaction circuits for triggering, a resistance and a Thermal Cutoffs; described Thermal Cutoffs is an end that is connected electro-heat equipment; two ends of described resistance are coupled reaction circuits for triggering and Thermal Cutoffs respectively; the end in addition of described reaction circuits for triggering connects microprocessor; with when the microprocessor stop signal is exported, make power supply, Thermal Cutoffs and resistance form the loop.
2. the circuit that prevents superheating of heating device as claimed in claim 1 is characterized in that, the circuits for triggering of described heater circuit comprise an electric capacity, a resistance and a second switch of series connection; One end ground connection of described second switch, end connects electro-heat equipment and microprocessor in addition, described second switch two resistance in parallel.
3. the circuit that prevents superheating of heating device as claimed in claim 2 is characterized in that, described second switch is two-way thyristor.
4. the circuit that prevents superheating of heating device as claimed in claim 2 is characterized in that, described microprocessor stop signal when the second switch short circuit exports overheating protection circuit to.
5. the circuit that prevents superheating of heating device as claimed in claim 1 is characterized in that, described microprocessor stop signal when damaging exports overheating protection circuit to.
6. the circuit that prevents superheating of heating device as claimed in claim 1, it is characterized in that, described reaction circuits for triggering comprise interconnective first, second and third npn bipolar transistor, first and second RC circuit is connected to the base stage of first and second npn bipolar transistor, a described RC circuit connects microprocessor, and the emitter grounding of described three npn bipolar transistors, the collection utmost point of three npn bipolar transistors connects the power supply after the rectification, and one first switch connects the collection utmost point of the 3rd npn bipolar transistor and a resistance of overheating protection circuit respectively; One end and the di-resistance of other described first switch, described two resistance connect microprocessor.
7. the circuit that prevents superheating of heating device as claimed in claim 6 is characterized in that, described first switch is two-way thyristor.
8. realize that claim 1 to 7 prevents the method for superheating of heating device for one kind, it is characterized in that described method comprises:
One heater circuit is provided, heater is carried out heated condition control;
The described microprocessor that provides an overheating protection circuit to connect temperature control, too high when temperature, during the output of microprocessor stop signal, described Thermal Cutoffs is burnt, and end to continue heating, to overheating protection circuit, make electro-heat equipment can not produce abnormal high temperature.
9. realization claim 1 to 7 as claimed in claim 8 prevents the method for superheating of heating device circuit, it is characterized in that, also comprise second switch detecting step, be to make microprocessor stop to export control pulse wave to the second switch of the circuits for triggering of heater circuit, reaction by heater circuit, learn whether circuits for triggering maintain normal condition, make the microprocessor decision whether end heating schedule.
10. realization claim 1 to 7 as claimed in claim 11 prevents the method for superheating of heating device circuit, it is characterized in that, also comprise one first switch detecting step, be to make microprocessor stop to export to reacting the control pulse wave of circuits for triggering and second switch, by detecting the reaction of circuit between first switch and the microprocessor, learn whether first switch maintains normal condition, make the microprocessor decision whether end heating schedule.
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| Application Number | Priority Date | Filing Date | Title |
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| CN200610090701A CN100594746C (en) | 2006-06-28 | 2006-06-28 | Method and circuit for preventing superheating of heating device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN200610090701A CN100594746C (en) | 2006-06-28 | 2006-06-28 | Method and circuit for preventing superheating of heating device |
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| CN101098570A true CN101098570A (en) | 2008-01-02 |
| CN100594746C CN100594746C (en) | 2010-03-17 |
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| CN101674686B (en) * | 2008-09-09 | 2011-08-03 | 李淑秋 | Heat generation device and temperature control method thereof |
| US8263911B2 (en) | 2009-05-25 | 2012-09-11 | Pegatron Corporation | Electronic device with heating protection circuit and heating protection method thereof |
| CN103179697A (en) * | 2011-12-22 | 2013-06-26 | 王清传 | Heating structure and method capable of preventing overheating of hot line |
| CN103974472A (en) * | 2013-02-01 | 2014-08-06 | 研祥智能科技股份有限公司 | Heating film and heating device |
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| CN104848703A (en) * | 2015-05-17 | 2015-08-19 | 成都中冶节能环保工程有限公司 | Thermal protection type coke oven waste heat power generation system based on power supply voltage regulating circuit |
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| CN111712146A (en) * | 2018-12-13 | 2020-09-25 | 韩国烟草人参公社 | Aerosol generating device and method for cutting off heater heating caused by abnormal operation |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101674686B (en) * | 2008-09-09 | 2011-08-03 | 李淑秋 | Heat generation device and temperature control method thereof |
| US8263911B2 (en) | 2009-05-25 | 2012-09-11 | Pegatron Corporation | Electronic device with heating protection circuit and heating protection method thereof |
| TWI381604B (en) * | 2009-05-25 | 2013-01-01 | Pegatron Corp | Electronic apparatus with heating protection circuit and heating protecting method thereof |
| CN101901180B (en) * | 2009-05-25 | 2013-01-23 | 和硕联合科技股份有限公司 | Heating protection circuit, electronic device and heating protection method thereof |
| CN103179697A (en) * | 2011-12-22 | 2013-06-26 | 王清传 | Heating structure and method capable of preventing overheating of hot line |
| CN104115551A (en) * | 2012-02-16 | 2014-10-22 | 韦巴斯托股份公司 | Vehicle heater and method for monitoring a vehicle |
| CN104115551B (en) * | 2012-02-16 | 2017-03-29 | 韦巴斯托股份公司 | The monitoring method of vehicle heater and vehicle heater |
| US10625571B2 (en) | 2012-02-16 | 2020-04-21 | Webasto SE | Vehicle heater and method for monitoring a vehicle heater |
| CN103974472A (en) * | 2013-02-01 | 2014-08-06 | 研祥智能科技股份有限公司 | Heating film and heating device |
| CN103974472B (en) * | 2013-02-01 | 2017-08-15 | 研祥智能科技股份有限公司 | A kind of heating film and heater |
| CN104242883B (en) * | 2014-10-10 | 2017-03-15 | 厦门金欣荣电子科技有限公司 | A kind of controlled type solid-state relay |
| CN104848700A (en) * | 2015-05-15 | 2015-08-19 | 成都中冶节能环保工程有限公司 | Thermal inductance type coke oven waste heat recovery power generation system based on power supply regulating circuit |
| CN104848703A (en) * | 2015-05-17 | 2015-08-19 | 成都中冶节能环保工程有限公司 | Thermal protection type coke oven waste heat power generation system based on power supply voltage regulating circuit |
| CN111712146A (en) * | 2018-12-13 | 2020-09-25 | 韩国烟草人参公社 | Aerosol generating device and method for cutting off heater heating caused by abnormal operation |
| CN112203368A (en) * | 2020-10-09 | 2021-01-08 | 宁波昕科工贸有限公司 | Temperature control method, circuit and heating device |
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