CN202664977U - Intelligent control DC (direct current) low-voltage electric quilt/blanket and intelligent control circuit thereof - Google Patents
Intelligent control DC (direct current) low-voltage electric quilt/blanket and intelligent control circuit thereof Download PDFInfo
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- CN202664977U CN202664977U CN 201220272365 CN201220272365U CN202664977U CN 202664977 U CN202664977 U CN 202664977U CN 201220272365 CN201220272365 CN 201220272365 CN 201220272365 U CN201220272365 U CN 201220272365U CN 202664977 U CN202664977 U CN 202664977U
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Abstract
The utility model discloses an intelligent control DC (direct current) low-voltage electric quilt/blanket and an intelligent control circuit thereof. The intelligent control circuit of the DC low-voltage electric quilt/blanket comprises a heating element, an automatic detecting circuit, an amplifying shaping circuit and an MCU (microcontroller unit) or a drive IC (integrated circuit). Resistance of the heating element varies along with temperature. The automatic detecting circuit comprises a master power switch tube serially connected to a master loop of the heating element and a sampling resistor. The sampling resistor converts current of the master loop into sampling voltage signals and outputs. The amplifying shaping circuit amplifies and shapes the sampling voltage signals into test voltage value and outputs. The MCU or the drive IC compares the test voltage value with tap position limit value through a comparison circuit. The MCU or the drive IC further outputs duty ratio signals to a control electrode of the master power switch tube after the test voltage value is processed by a logic circuit, a PID (proportional-integral-derivative) and an operational circuit, and accordingly closed-loop control is achieved. The intelligent control circuit is simple in circuit system, small in size, low in cost, fine in process practicability, and unlimited in application environments and methods, so that the intelligent control circuit is suitable for batch production and popularization.
Description
Technical field
The utility model relates to DC low-voltage electroheating quilt or electric blanket field, relates in particular to thermostatically controlled DC low-voltage electroheating quilt or electric blanket, specifically a kind of intelligent control type DC low-voltage electroheating quilt/blanket and intelligence control circuit thereof.
Background technology
Present traditional DC low-voltage temp over blanket and blanket, when the bad or line fault of performance appears in the temperature sensing material of output, participate in thermoregulator main power section, then can make mistakes because of detection signal and be in the misoperation state, this moment, output voltage raise, cause the rear class load, the out-of-control phenomenons such as rising appear in body, blanket temperature, bring larger potential safety hazard to the user.
Figure 1 shows that traditional employing decides the thermoregulation circuit that duty is recently regulated body, blanket temperature.The temperature that surpasses its setting when ambient temperature, also or body, blanket body occur when folding, each that sets section temperature value that dutycycle voltage is corresponding will produce larger variation, easily causes security incident, and the environment that this uses over blanket and blanket and the method for use all have higher requirement.Therefore this circuit is not suitable for batch production and promotes the use of.
Figure 2 shows that traditional on the heating conductor of body, blanket body the thermoregulation circuit of attached temperature sensing device.When body, blanket temperature rose, temperature sensing device resistance attached to it (Positive and Negative Coefficient Temperature all can) also changed thereupon.This voltage variety is sent to the rear class feedback circuit through R2, and by comparing with reference voltage, output is the error voltage of correspondence with it, and the dutycycle of the driving signal of MCU or drive IC output is also changed thereupon, thereby plays the effect of temperature adjustment.But this temperature sensing device is subjected to the impact of present position and degree of adhesion, can not respond in real time body, the temperature variation of blanket body reality, and be subjected to the impact of environment temperature very large, particularly work as body, when the blanket body occurs to fold, the temperature of induction point and body, the temperature value of blanket body inside differs very large, with cause the output of MCU or drive IC the driving signal dutyfactor dutycycle corresponding with actual temperature value the two differ greatly, this will be so that body, the non-induction point temperature value of blanket body surpasses the temperature value of induction point, What is more, also can make body, the temperature value of blanket body surpasses its highest safety value that bears, and causes serious security incident.Therefore this scheme also is not suitable for batch production and promotes the use of owing to the restriction that affected by using method and service condition.
Address the above problem at present and mainly contain following two kinds of conventional methods:
1) method one
In body, a plurality of temperature detecting point of the inner increase of blanket body, the temperature sensing device that detects usefulness is serially connected, to reduce the radical of lead-in wire.Owing to having increased a plurality of temperature detecting point, can cover heating part on a large scale, so that the temperature value deviation of each point reduces.But this scheme is just because of having increased a plurality of fixing points, the corresponding technology difficulty that has also increased body, blanket body, and the fixing of temperature sensing device itself also is a more scabrous problem, and its uniformity and stability are difficult to be protected, so scheme is unfavorable for the real solution of problem.
2) method two
In the control circuit of body, blanket body, the quantity that maximum temperature restriction can reduce temperature control point is set, playing the protective effect of control temperature upper limit, thereby can guarantee body, blanket body when non-normal use, its temperature also can be limited in the safety value.But this scheme still can not solve above-described non-uniform temperature and be subjected to the factor affecting such as position, using method and the temperature imbalance problem that occurs, in addition, also greatly increased the possibility that temperature control misoperation appears in over blanket and blanket, impact is normal to be used, therefore also be not suitable for batch production and promote the use of.
Summary of the invention
To be solved in the utility model is the temperature-control circuit of existing over blanket and blanket and the technical problems such as the temperature sampling device technology is complicated, cost is higher, poor reliability, aims to provide a kind of new intelligent DC low-voltage electroheating quilt and the control system of blanket.
Solving the problems of the technologies described above the technical scheme that adopts is: the intelligence control circuit of DC low-voltage electroheating quilt/blanket comprises that resistance with heater element, automatic detection circuit, amplification and rectification circuit and MCU or the drive IC of variable temperatures, is characterized in that:
Described automatic detection circuit comprises master power switch pipe and the sampling resistor that is connected on the heater element major loop, and described sampling resistor is exported after the electric current of major loop is converted into the sampled voltage signal;
Described amplification and rectification circuit is exported with described sampled voltage signal amplification with after being shaped as the test voltage value;
Described MCU or drive IC compare by test voltage value and the gear limit value of comparison circuit with amplification and rectification circuit output, export the duty cycle signals corresponding with this gear to the control utmost point of master power switch pipe after processing by logic circuit, PID and computing circuit again, form closed-loop control.
Intelligence control circuit of the present utility model, can preset a dutycycle at the beginning of the start, generally speaking, the control utmost point driving signal that can set the master power switch pipe this moment is the maximum duty cycle state, power supply power also reaches maximum, makes over blanket or electric blanket Fast Heating.After the heater element heating, its resistance variation with temperature and changing makes the electric current of major loop that corresponding change also occur.The current signal of sampling resistor Real-time Collection major loop is transported to MCU or drive IC by amplification and rectification circuit.MCU or drive IC compare the gear limit value of this testing current value and initial adjustment, when this testing current value reaches this initial gear limit value, export the duty cycle signals corresponding with this initial gear to the control utmost point of master power switch pipe.In heating process subsequently, when if the testing current value moves to the limit value of adjacent gear, MCU or drive IC are exported duty cycle signals corresponding to gear adjacent with this to the control utmost point of master power switch pipe, thereby guarantee temperature by automatic constant between the gear that sets and adjacent gear, play the automatic constant-temperature effect.
The intelligence control circuit of DC low-voltage electroheating quilt/blanket of the present utility model adopts automated closed-loop intelligent constant-temperature system, under the prerequisite that does not affect body, blanket bulk properties, simplified the process of body, blanket body, reduced temperature sensing device production, processing cost.Simultaneously ensured preferably the temperature homogeneity of body, blanket body, it has been controlled in the scope of a stability and safety.And, the conductor resistance of direct-detection heater element, its detected value can not be subjected to the impact of product using method and body, blanket folded body fully, this intelligent design, operability is higher, and cost is lower.
As further improvement of the utility model, described heater element, master power switch pipe and sampling resistor are connected between the anode and ground of dc source successively, a control of series connection electrode resistance between the control utmost point of described master power switch pipe and the ground, described sampling resistor two ends are an external RC integrating circuit also, can play the effect of buffering at booting moment, misoperation can be avoided, and the precision of current sampling signal can be improved.
According to the utility model, described amplification and rectification circuit comprises an amplifier circuit or a transistor circuit.
Further improve as of the present utility model, described amplification and rectification circuit also comprises a front pole tension follower circuit again.Described voltage follower plays jamproof effect in order to isolate sampled signal.When heater element adopts the heater element of positive temperature coefficient, PTC element for example, described amplification and rectification circuit and sampled signal homophase; When heater element adopts the heater element of negative temperature coefficient, NTC element for example, described amplification and rectification circuit will to sampled signal carry out covert after output.
According to the utility model, described error comparison circuit is integrated in the inside of MCU or drive IC, perhaps is placed on MCU or drive IC.The external advantage of error comparison circuit is convenient the adjusting, and improves control accuracy.
Further improve as of the present utility model, described heater element two ends are absorbing circuit in parallel also again.This absorbing circuit is turning on and off the voltage that constantly bears for improvement of the master power switch pipe, and protection master power switch pipe is not breakdown.
According to the utility model, described absorbing circuit comprises a pair of absorption diode and an Absorption Capacitance, and described a pair of absorption diode negative electrode links to each other, and anode is connected across the two ends of described Absorption Capacitance and heater element.
According to the utility model, described absorbing circuit comprises an absorption resistance, an absorption diode and an Absorption Capacitance, one end of one termination heater element of described absorption resistance and an end of Absorption Capacitance, the other end of another termination Absorption Capacitance of absorption resistance and the negative electrode of absorption diode, the other end of the anode sending and receiving thermal element of absorption diode and the other end of Absorption Capacitance.
According to the utility model, described absorbing circuit comprises an absorption resistance and the series circuit that Absorption Capacitance consists of.
According to the utility model, described master power switch pipe is wherein any of triode, MOSFET or IGBT.
The utility model also will provide a kind of intelligent control type DC low-voltage electroheating quilt/blanket, comprise attaching plug, the AC/DC power supply adaptor, many gears adjustable temp. controller, quilt/blanket body and intelligence control circuit, described attaching plug is connected the AC line and connects with the AC/DC power supply adaptor, described power supply adaptor connects by the DC line with the gear of being connected adjustable temp. controller, described many gears adjustable temp. controller is connected to by the bottom of/blanket body by the temperature controller load line, it is characterized in that described intelligence control circuit is arranged in the temperature controller, comprise that resistance is with the heater element of variable temperatures, automatic detection circuit, amplification and rectification circuit and MCU or drive IC, wherein:
Described heater element is arranged in described quilt/blanket body;
Described automatic detection circuit comprises master power switch pipe and the sampling resistor that is connected on the heater element major loop, and described sampling resistor is exported after the electric current of major loop is converted into the sampled voltage signal;
Described amplification and rectification circuit is exported with described sampled voltage signal amplification with after being shaped as the test voltage value;
Described MCU or drive IC compare by test voltage value and the gear limit value of comparison circuit with amplification and rectification circuit output, export the duty cycle signals corresponding with this gear to the control utmost point of master power switch pipe after processing by logic circuit, PID and computing circuit again, form closed-loop control.
Description of drawings
The utility model is described in further detail below in conjunction with drawings and Examples.
Fig. 1 is traditional temperature regulation circuit.
Fig. 2 is traditional constant-temperature circuit with temperature detection.
Fig. 3, Fig. 4, Fig. 5, be that the utility model adopts MOSFET as the intelligence control circuit of main switch.
Fig. 6, Fig. 7, Fig. 8, be that the utility model adopts transistor as the intelligence control circuit of main switch.
Fig. 9, Figure 10, Figure 11, be that the utility model adopts IGBT as the intelligence control circuit of main switch.
Figure 12 is the Duty ratio control principle schematic that the utility model adopts MCU or drive IC.
Figure 13 is the overall structure schematic diagram of the utility model intelligent control type DC low-voltage electroheating quilt/blanket, comprises external wiring diagram and body, blanket body internal wiring schematic diagram.
The specific embodiment
Embodiment one
Intelligence control circuit implementation of the present utility model is just like Fig. 3, Fig. 4, shown in Figure 5, and its difference is that mainly the master power switch pipe is different from the absorption circuit between the power positive end DC+, and this body structure of intelligence control circuit is identical.
With reference to Fig. 4, described absorbing circuit comprises a pair of absorption diode D1, D2 and an Absorption Capacitance C1, and described a pair of absorption diode D1, D2 negative electrode link to each other, and anode is connected across the two ends of described Absorption Capacitance C1 and heater element.
Intelligence control circuit of the present utility model comprises resistance with heater element, automatic detection circuit, amplification and rectification circuit and MCU or the drive IC of variable temperatures, among the figure, and R
CU1Equivalent resistance for heater element.Heater element can be various metal wires, line with heating function or fever tablet.
Described automatic detection circuit comprises master power switch pipe Q1 and sampling resistor R3, described heater element, master power switch pipe Q1 and sampling resistor R3 are connected between the anode DC+ and ground of dc source successively, described master power switch pipe Q1 adopts the MOSFET pipe, resistance R1 of series connection between its grid and the ground.Described sampling resistor R3 two ends are an external RC integrating circuit that is made of resistance R 2 and capacitor C 2 series connection also, the wherein source electrode of a termination MOSFET pipe of resistance R 2 and an end of resistance R 3, one end of another termination capacitor C 2 of resistance R 2, the other end of the other end connecting resistance R3 of capacitor C 2 and ground.
Described amplification and rectification circuit comprises follower U1-1, amplifier U1-2, peripheral resistance R 5-R8 and capacitor C 3.The common port of the positive terminating resistor R2 of the input of follower U1-1 and capacitor C 2, the input negative terminal of follower U1-1 connects an end of its output and resistance R 5, one end of another termination capacitor C 3 of resistance R 5 and the input anode of amplifier U1-2, the other end ground connection of capacitor C 3, the input negative terminal connecting resistance R6 of amplifier U1-2 and an end of resistance R 7, the output of another termination amplifier U1-2 of resistance R 7 and an end of resistance R 8, the other end ground connection of resistance R 6 and MCU or drive IC, another termination MCU or the drive IC of resistance R 8.
In the present embodiment, heater element adopts the material of ptc characteristics, and behind DC low-voltage electroheating quilt and blanket plugged, master power switch pipe Q1 is in the maximum duty cycle duty of setting, the Rcu resistance will increase with the rising of temperature thereupon, so that diminish through the electric current of sampling resistor R3 thereupon.After resistance R 2, capacitor C 2, deliver to rear class at the sampled voltage signal that sampling resistor R3 produces.Amplifier U1-2 inputs MCU or drive IC after this sampled voltage signal is amplified shaping.When this detected value reaches the value that MCU or drive IC set, to export a gear control signal, make the driving signal dutyfactor of the main power MOSFET tube G utmost point adjust to as shown in figure 12 width, enter temperature constant state, the closed-loop adjustment of formation temperature variable realizes the function of automatic constant-temperature control with this.
When heater element adopts the heater element of negative temperature coefficient, NTC element for example, described amplification and rectification circuit will to sampled signal carry out covert after output, specifically can be by input anode and the input negative terminal of amplifier U1-2 can be realized adjusting.
The utility model Circuits System is simple, and volume is little, and cost is low, and technological feasibility is good, and is not subjected to the restriction of environment for use and using method, therefore this scheme is fit to batch production and promotes the use of.
With reference to Fig. 4, described absorbing circuit comprises an absorption resistance R9, an absorption diode D3 and an Absorption Capacitance C4, one end of the termination heater element of described absorption resistance R9 and the end of Absorption Capacitance C4, the other end of another termination Absorption Capacitance C4 of absorption resistance R9 and the negative electrode of absorption diode D3, the other end of the anode sending and receiving thermal element of absorption diode D3 and the other end of Absorption Capacitance C4.
With reference to Fig. 5, described absorbing circuit comprises an absorption resistance R17 and the series circuit that Absorption Capacitance C7 consists of, and wherein, the R17 of absorption circuit also can be 0.
Embodiment two
The embodiment two of intelligence control circuit of the present utility model is such as Fig. 6, Fig. 7 and shown in Figure 8, and three's difference only is that the master power switch pipe is different from the absorption circuit between the power positive end DC+, and this body structure of intelligence control circuit is identical.In the present embodiment, adopt the bipolarity transistor as the master power switch pipe.
With reference to Fig. 6, the structure of absorption circuit is identical with Fig. 4 embodiment, and the structure of automatic detection circuit is also identical with Fig. 4 embodiment, just substitutes MOSFET pipe Q2 with bipolarity transistor Q4.
Amplification and rectification circuit comprises triode Q4, resistance R 29, R30, R31 and R32, the resistance R 28 of one termination automatic detection circuit of resistance R 29 and the common port of capacitor C 11, the end of the other end connecting resistance R30 of resistance R 29 and the base stage of triode Q4, the other end of the emitter stage connecting resistance R30 of triode Q4 and ground, the colelctor electrode connecting resistance R31 of triode Q4 and an end of resistance R 32, another termination power VCC of resistance 31, another termination MCU or the drive IC of resistance R 32.
Behind DC low-voltage electroheating quilt and blanket plugged, triode Q4 is in the maximum duty cycle duty of setting, the Rcu resistance will be with the rising of temperature change thereupon (heating conductors such as the line with heating function of ptc characteristics, heat-generating pipe, fever tablet, resistance will rise and increase with temperature; The heating conductors such as the line with heating function of NTC characteristic, heat-generating pipe, fever tablet, resistance will rise and reduces with temperature) so that change through the electric current of sampling resistor R27 thereupon.After resistance R 28 and capacitor C 11, deliver to rear class at the voltage signal that sampling resistor R27 produces, carry out phse conversion and amplitude amplification by amplification and rectification circuit, with phase place and the amplitude requirement that satisfies closed loop circuit, and deliver to MCU or driver IC circuits.Reach value that MCU or drive IC set when the detected value of this signal this moment, to export one with the adjustable control signal of gear, make the base drive signal dutycycle of triode Q4 adjust to as shown in figure 12 width, enter temperature constant state, the closed-loop adjustment of formation temperature variable realizes the function of automatic constant-temperature control with this.
The utility model Circuits System is simple, and volume is little, and cost is low, and technological feasibility is good, and is not subjected to the restriction of environment for use and using method, therefore this scheme is fit to batch production and promotes the use of.
With reference to Fig. 7, the structure of its absorption circuit is identical with Fig. 3 embodiment.
With reference to Fig. 8, the structure of its absorption circuit is identical with Fig. 5 embodiment.
Embodiment three
With reference to Fig. 9, Figure 10, Figure 11, for adopting IGBT as the intelligent constant-temperature control circuit of master power switch.This embodiment operation principle is can reference example two described, and difference is that this programme has increased an error comparison circuit in addition, and described error comparison circuit is comprised of comparator U4/U5/U6 and peripheral resistive element.The error comparison circuit.The advantage that the error comparison circuit independently is arranged on the outside of MCU or drive IC is convenient the adjusting, and improves control accuracy.
With reference to Figure 13, intelligent control type DC low-voltage electroheating quilt/blanket of the present utility model, comprise attaching plug 1, AC/DC power supply adaptor 3, many gears adjustable temp. controller 5, quilt/blanket body 7 and intelligence control circuit, be provided with resistance in described quilt/blanket body 7 with the heater element 8 of variable temperatures.Attaching plug 1 is connected with the AC/DC power supply adaptor and is connected by AC line 2, and power supply adaptor 3 connects by DC line 4 with the gear of being connected adjustable temp. controller 5, and many gears adjustable temp. controller 5 is connected to by the bottom of/blanket body 7 by temperature controller load line 6.Described intelligence control circuit is arranged in the temperature controller 5, and its structure front was described, at this Ao Shu no longer.In temperature controller 5, also be provided with liquid crystal or digital pipe display circuit.The heater element of over blanket/blanket body interior is heat generating components, or detector unit.
The utility model adopts hexadecimal number word arithmetic and control mode to carry out over-temperature protection, and when over blanket and blanket were in hot environment or folding the use, MCU or control IC output protection level were closed the master power switch pipe, play the effect of protection; Simultaneously, liquid crystal or digital pipe display circuit output fault-signal, screen display fault character.
What should be understood that is: above-described embodiment is just to explanation of the present utility model; rather than to restriction of the present utility model; any utility model that does not exceed in the utility model connotation scope is created; all fall within the protection domain of the present utility model; such as Figure 13; contain connection, control and the display mode of over blanket/blanket, also all should fall into protection domain of the present utility model.
Claims (18)
1.DC the intelligence control circuit of low-voltage electroheating quilt/blanket comprises that resistance with heater element, automatic detection circuit, amplification and rectification circuit and MCU or the drive IC of variable temperatures, is characterized in that:
Described automatic detection circuit comprises master power switch pipe and the sampling resistor that is connected on the heater element major loop, and described sampling resistor is exported after the electric current of major loop is converted into the sampled voltage signal;
Described amplification and rectification circuit is exported with described sampled voltage signal amplification with after being shaped as the test voltage value;
Described MCU or drive IC compare by test voltage value and the gear limit value of error comparison circuit with amplification and rectification circuit output, export the duty cycle signals corresponding with this gear to the control utmost point of master power switch pipe after processing by logic circuit, PID and computing circuit again, form closed-loop control.
2. the intelligence control circuit of DC low-voltage electroheating quilt/blanket as claimed in claim 1, it is characterized in that described heater element, master power switch pipe and sampling resistor are connected between the anode and ground of dc source successively, a control of series connection electrode resistance between the control utmost point of described master power switch pipe and the ground, described sampling resistor two ends are an external RC integrating circuit also.
3. the intelligence control circuit of DC low-voltage electroheating quilt/blanket as claimed in claim 1 is characterized in that described amplification and rectification circuit comprises an amplifier circuit or transistor circuit.
4. the intelligence control circuit of DC low-voltage electroheating quilt/blanket as claimed in claim 3 is characterized in that described amplification and rectification circuit also comprises a front pole tension follower circuit.
5. the intelligence control circuit of DC low-voltage electroheating quilt/blanket as claimed in claim 1 is characterized in that described error comparison circuit is integrated in the inside of MCU or drive IC, perhaps is placed on MCU or drive IC.
6. the intelligence control circuit of DC low-voltage electroheating quilt/blanket as claimed in claim 1 is characterized in that described heater element two ends absorbing circuit in parallel.
7. the intelligence control circuit of DC low-voltage electroheating quilt/blanket as claimed in claim 6, it is characterized in that described absorbing circuit comprises a pair of absorption diode and an Absorption Capacitance, described a pair of absorption diode negative electrode links to each other, and anode is connected across the two ends of described Absorption Capacitance and heater element.
8. the intelligence control circuit of DC low-voltage electroheating quilt/blanket as claimed in claim 6, it is characterized in that described absorbing circuit comprises an absorption resistance, an absorption diode and an Absorption Capacitance, one end of one termination heater element of described absorption resistance and an end of Absorption Capacitance, the other end of another termination Absorption Capacitance of absorption resistance and the negative electrode of absorption diode, the other end of the anode sending and receiving thermal element of absorption diode and the other end of Absorption Capacitance.
9. the intelligence control circuit of DC low-voltage electroheating quilt/blanket as claimed in claim 6 is characterized in that described absorbing circuit comprises an absorption resistance and the series circuit that Absorption Capacitance consists of.
10. such as the intelligence control circuit of any one described DC low-voltage electroheating quilt/blanket of claim 1-9, it is characterized in that described master power switch pipe is wherein any of triode, MOSFET or IGBT.
11. such as the intelligence control circuit of any one described DC low-voltage electroheating quilt/blanket of claim 1-9, it is characterized in that in over blanket/blanket energising initially the maximum duty cycle duty that is in setting of master power switch pipe.
12. intelligent control type DC low-voltage electroheating quilt/blanket, comprise attaching plug, the AC/DC power supply adaptor, many gears adjustable temp. controller, quilt/blanket body and intelligence control circuit, described attaching plug is connected the AC line and connects with the AC/DC power supply adaptor, described power supply adaptor connects by the DC line with the gear of being connected adjustable temp. controller, described many gears adjustable temp. controller is connected to by the bottom of/blanket body by the temperature controller load line, it is characterized in that described intelligence control circuit is arranged in the temperature controller, comprise that resistance is with the heater element of variable temperatures, automatic detection circuit, amplification and rectification circuit and MCU or drive IC, wherein:
Described heater element is arranged in described quilt/blanket body;
Described automatic detection circuit comprises master power switch pipe and the sampling resistor that is connected on the heater element major loop, and described sampling resistor is exported after the electric current of major loop is converted into the sampled voltage signal;
Described amplification and rectification circuit is exported with described sampled voltage signal amplification with after being shaped as the test voltage value;
Described MCU or drive IC compare by test voltage value and the gear limit value of comparison circuit with amplification and rectification circuit output, export the duty cycle signals corresponding with this gear to the control utmost point of master power switch pipe after processing by logic circuit, PID and computing circuit again, form closed-loop control.
13. intelligent control type DC low-voltage electroheating quilt/blanket as claimed in claim 12, it is characterized in that described heater element, master power switch pipe and sampling resistor are connected between the anode and ground of dc source successively, a control of series connection electrode resistance between the control utmost point of described master power switch pipe and the ground, described sampling resistor two ends are an external RC integrating circuit also.
14. intelligent control type DC low-voltage electroheating quilt/blanket as claimed in claim 12 is characterized in that described amplification and rectification circuit comprises an amplifier circuit or transistor circuit.
15. intelligent control type DC low-voltage electroheating quilt/blanket as claimed in claim 14 is characterized in that described amplification and rectification circuit also comprises a front pole tension follower circuit.
16. intelligent control type DC low-voltage electroheating quilt/blanket as claimed in claim 12 is characterized in that described heater element two ends absorbing circuit in parallel.
17. such as any one described intelligent control type DC low-voltage electroheating quilt/blanket of claim 12-16, it is characterized in that described master power switch pipe is wherein any of triode, MOSFET or IGBT.
18. intelligent control type DC low-voltage electroheating quilt/blanket as claimed in claim 12, it is characterized in that also being provided with liquid crystal or digital pipe display circuit in described many gears adjustable temp. controller, the heater element of over blanket/blanket body interior is heat generating components, or detector unit.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220272365 CN202664977U (en) | 2012-06-10 | 2012-06-10 | Intelligent control DC (direct current) low-voltage electric quilt/blanket and intelligent control circuit thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201220272365 CN202664977U (en) | 2012-06-10 | 2012-06-10 | Intelligent control DC (direct current) low-voltage electric quilt/blanket and intelligent control circuit thereof |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102727021A (en) * | 2012-06-10 | 2012-10-17 | 浙江榆阳电子有限公司 | Intelligent control DC (direct current) low-voltage electric heating quilt/blanket and intelligent control circuit of intelligent control DC low-voltage electric heating quilt/blanket |
| CN103169382A (en) * | 2013-03-26 | 2013-06-26 | 江苏正本净化节水科技实业有限公司 | Water dispenser heating control and display circuit |
| CN104323428A (en) * | 2014-10-24 | 2015-02-04 | 林光榕 | Temperature control electronic cigarette and temperature control method of temperature control electronic cigarette |
| ES2624539A1 (en) * | 2016-01-13 | 2017-07-14 | Emilio ARENAS FERNÁNDEZ | Blanket with self-regulating temperature control (Machine-translation by Google Translate, not legally binding) |
| 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 |
| CN109168204A (en) * | 2018-08-14 | 2019-01-08 | 滁州国康医疗仪器有限公司 | The temprature control method of electric blanket |
-
2012
- 2012-06-10 CN CN 201220272365 patent/CN202664977U/en not_active Withdrawn - After Issue
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102727021A (en) * | 2012-06-10 | 2012-10-17 | 浙江榆阳电子有限公司 | Intelligent control DC (direct current) low-voltage electric heating quilt/blanket and intelligent control circuit of intelligent control DC low-voltage electric heating quilt/blanket |
| CN103169382A (en) * | 2013-03-26 | 2013-06-26 | 江苏正本净化节水科技实业有限公司 | Water dispenser heating control and display circuit |
| CN104323428A (en) * | 2014-10-24 | 2015-02-04 | 林光榕 | Temperature control electronic cigarette and temperature control method of temperature control electronic cigarette |
| ES2624539A1 (en) * | 2016-01-13 | 2017-07-14 | Emilio ARENAS FERNÁNDEZ | Blanket with self-regulating temperature control (Machine-translation by Google Translate, not legally binding) |
| 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 |
| CN109168204A (en) * | 2018-08-14 | 2019-01-08 | 滁州国康医疗仪器有限公司 | The temprature control method of electric blanket |
| CN109168204B (en) * | 2018-08-14 | 2021-09-07 | 滁州国康医疗仪器有限公司 | Temperature control method of electric blanket |
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