CN102314183A - Whole line temperature control circuit - Google Patents
Whole line temperature control circuit Download PDFInfo
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- CN102314183A CN102314183A CN201110244939A CN201110244939A CN102314183A CN 102314183 A CN102314183 A CN 102314183A CN 201110244939 A CN201110244939 A CN 201110244939A CN 201110244939 A CN201110244939 A CN 201110244939A CN 102314183 A CN102314183 A CN 102314183A
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Abstract
A whole line temperature control circuit, which is designed in the invention, mainly comprises: a heating element, a power supply circuit, a synchronous follower circuit, a comparison circuit, an output circuit and a sampling circuit. The power supply circuit is connected with the output circuit and the sampling circuit through the synchronous follower circuit and the comparison circuit. The power supply circuit is connected with the heating element through a silicon controlled rectifier V1. The output circuit is connected with the silicon controlled rectifier and the sampling circuit is connected with the heating element. The power supply circuit is connected with an in-phase input terminal of an operational amplifier IC1 of the synchronous follower circuit through a resistor R1and a capacitor C3, wherein the resistor R1 is connected in series with the capacitor C3. By using a synchronous follower circuit synchronization signal input connection mode, an influence of capacitance-resistance voltage-reduction capacitive reactance can be effectively avoided so that an anti-electromagnetic interference ability of the synchronous follower circuit can be substantially raised.
Description
Technical field
The present invention relates to a kind of circuit, particularly a kind of all fronts circuit temperature-controlling circuit.
Background technology
It is simple that the Chinese patent of CN1925699 discloses a kind of line construction, the temperature-adjusting circuit that point of interface is few, and its cardinal principle is through circuit design, makes heater element promptly reach heating function, can accomplish the function of " temperature sampling " again.But the disclosed circuit diagram of this patent is comparatively idealized, in practical application, when there is strong electromagnetic in electrical network, will cause shortcomings such as reduction of temperature control degree of accuracy and temperature-adjusting circuit quit work.
Summary of the invention
The objective of the invention is provides a kind of anti-electromagnetic interference (EMI) effective for the deficiency that solves above-mentioned technology, control temperature all fronts circuit temperature-controlling circuit accurate and in proper working order.
In order to achieve the above object; The all fronts circuit temperature-controlling circuit that the present invention designed; It mainly comprises heater element, power circuit, synchronous follow circuit, comparator circuit, output circuit and sample circuit; Wherein power circuit is connected output circuit and sample circuit through synchronous follow circuit with comparator circuit, and power circuit is connected with heater element through controllable silicon V1, and output circuit connects controllable silicon; And sample circuit is connected with heater element, and described power circuit is connected with the in-phase input end of the operational amplifier IC1 of synchronous follow circuit through resistance R 1, the capacitor C 3 of series connection.This synchronous follow circuit synchronizing signal input connected mode can effectively be avoided the influence of resistance-capacitance depressurization capacitive reactance, has improved the anti-electromagnetic interference capability of synchronous follow circuit greatly.
Further scheme is, in the power circuit of the operational amplifier IC working power of described and synchronous follow circuit and comparator circuit, is provided with the stabilivolt DW1 and the DW2 of two series connection; The anode of the operational amplifier IC2 working power of described comparator circuit links to each other with its in-phase end through stabilivolt DW4, resistance R 5.Two the stabilivolt DW1 and the DW2 of series connection can increase the residual quantity between operation level and the inoperative level, and the dead zone range of suitable regulation and control heater element temperature control improves the reliability of entire circuit temperature control.And stabilivolt DW4 is two negative effects that stabilivolt brings of series connection in the offset supply effectively, and can do compensation effectively to the fluctuation of control voltage and the variation of environment temperature, make that temperature-adjusting circuit is stable more, temperature is controlled more accurate.
Further scheme is, the in-phase end of the operational amplifier IC2 in the diode D4 of the output terminal of the operational amplifier IC1 in the described synchronous follow circuit through reversal connection and the comparator circuit is connected.Diode D4 cooperates with operational amplifier IC1 can play the effect of drawing electric current effectively, makes that operational amplifier IC2 working stability, the state of a control in the comparator circuit is good, is not subject to disturb.
Further scheme is, stabilivolt DW3 is set in the described power circuit, and the anodal end of DW3 is connected on the power lead, and negative pole is connected between resistance R 1 and the capacitor C 3.Stabilivolt DW3 is the level of the in-phase end input of limits synchronization follow circuit effectively, prevents that stabilivolt DW1 and DW2 control circuit under the situation of open circuit is out of control.
Further scheme is; Said power circuit two ends are connected with controllable silicon V2 resistance R 14 and capacitor C 6; Wherein controllable silicon V2 anode connects power supply; The controllable silicon V2 control utmost point is leaded up to resistance R 13 and is connect the in-phase input end of IC2, and another road is connected between resistance R 14 and the capacitor C 6 through diode D9, and the negative electrode of controllable silicon V2 connects the inverting input of resistance R 14 and comparator circuit operational amplifier IC2.Through the combination of controllable silicon, diode, resistance, electric capacity is set, can break down or control comparator circuit during heater element generation flashing at circuit component, all can stop heating element works, increase the security of entire circuit.
The resulting system-wide temperature-adjusting circuit of the present invention; Circuit design is reasonable, and it is strong to have an anti-electromagnetic interference capability, and temperature control accurately; Security performance is high; Advantage such as automatic shutoff circuit is adapted at using in the every field under the situation that the heater element flashing occurs, is particluarly suitable for using in the warm industry of civilian electricity.
Description of drawings
Fig. 1 is a circuit diagram of the present invention.
Embodiment
Combine accompanying drawing that the present invention is done further description through embodiment below.
Embodiment 1:
Like Fig. 1, shown in Figure 2; The all fronts circuit temperature-controlling circuit that present embodiment is described; It mainly comprises heater element RL, power circuit, synchronous follow circuit, comparator circuit, output circuit and sample circuit; Wherein power circuit is connected output circuit and sample circuit through synchronous follow circuit with comparator circuit, and power circuit is connected with heater element RL through controllable silicon V1, and output circuit connects controllable silicon; And sample circuit is connected with heater element RL, and described power circuit is connected with the in-phase input end of the operational amplifier IC1 of synchronous follow circuit through resistance R 1, the capacitor C 3 of series connection.
In the power circuit that the operational amplifier IC working power end of described and synchronous follow circuit and comparator circuit links to each other, be provided with the stabilivolt DW1 and the DW2 of two series connection; The anode of the operational amplifier IC2 working power of described comparator circuit links to each other with its in-phase end through stabilivolt DW4, resistance R 5
The in-phase input end of operational amplifier IC2 in the diode D4 of the output terminal of operational amplifier IC1 in the described synchronous follow circuit through reversal connection and the comparator circuit is connected.
Stabilivolt DW3 is set in the described power circuit, and the anodal end of DW3 is connected on the power lead, and negative pole is connected between resistance R 1 and the capacitor C 3.
Said power circuit two ends are connected with controllable silicon V2 resistance R 14 and capacitor C 6; Wherein controllable silicon V2 anode connects IC working power anode; The controllable silicon V2 control utmost point is leaded up to the in-phase input end that R13 meets IC2 and is formed holding circuit, and the diode D9 of leading up to is connected between resistance R 14 and the capacitor C 6; The negative electrode of controllable silicon V2 connects the inverting input of resistance R 14 and comparator circuit operational amplifier IC2.Any one element during work on input of the homophase of IC2 and the inverting input branch road breaks down and breaks off immediate current at heater element RL and through R14 C6 is charged; All will make V2 obtain forward voltage, finally break off the electric current of heater element RL through IC2 control.
Claims (5)
1. circuit temperature-controlling circuit completely; It mainly comprises heater element, power circuit, synchronous follow circuit, comparator circuit, output circuit and sample circuit; Wherein power circuit is connected output circuit and sample circuit through synchronous follow circuit with comparator circuit; Power circuit is connected with heater element through controllable silicon V1; Output circuit connects controllable silicon, and sample circuit is connected with heater element, it is characterized in that described power circuit is connected with the in-phase input end of the operational amplifier IC1 of synchronous follow circuit through resistance R 1, the capacitor C 3 of series connection.
2. all fronts according to claim 1 circuit temperature-controlling circuit is characterized in that being provided with the stabilivolt DW1 and the DW2 of two series connection in the power circuit of described and the synchronous operational amplifier IC working power of follow circuit and comparator circuit; The anode of the operational amplifier IC2 working power of described comparator circuit links to each other with its in-phase end through stabilivolt DW4, resistance R 5.
3. the in-phase end of the operational amplifier IC2 in all fronts according to claim 1 circuit temperature-controlling circuit, the output terminal that it is characterized in that the operational amplifier IC1 in the described synchronous follow circuit diode D4 through reversal connection and the comparator circuit is connected.
4. all fronts according to claim 1 circuit temperature-controlling circuit is characterized in that being provided with in the described power circuit stabilivolt DW3, and the anodal end of DW3 is connected on the power lead, and negative pole is connected between resistance R 1 and the capacitor C 3.
5. all fronts according to claim 1 circuit temperature-controlling circuit; It is characterized in that said power circuit two ends are connected with controllable silicon V2 resistance R 14 and capacitor C 6; Wherein controllable silicon V2 anode connects power supply; The controllable silicon V2 control utmost point is leaded up to resistance R 13 and is connect the in-phase input end of IC2, and another road is connected between resistance R 14 and the capacitor C 6 through diode D9, and the negative electrode of controllable silicon V2 connects the inverting input of resistance R 14 and comparator circuit operational amplifier IC2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110244939.9A CN102314183B (en) | 2011-08-25 | 2011-08-25 | Whole line temperature control circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110244939.9A CN102314183B (en) | 2011-08-25 | 2011-08-25 | Whole line temperature control circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102314183A true CN102314183A (en) | 2012-01-11 |
| CN102314183B CN102314183B (en) | 2014-11-05 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110244939.9A Active CN102314183B (en) | 2011-08-25 | 2011-08-25 | Whole line temperature control circuit |
Country Status (1)
| Country | Link |
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| CN (1) | CN102314183B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104661345A (en) * | 2013-11-22 | 2015-05-27 | 张隆皇 | Heating line control device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2343922Y (en) * | 1998-09-30 | 1999-10-20 | 成都康虹电器有限公司 | Temp. controller for electric heating blanket |
| US20050189934A1 (en) * | 2004-02-27 | 2005-09-01 | Hitachi Global Storage Technologies Netherlands, B.V. | Efficient low dropout linear regulator |
| CN1925699A (en) * | 2006-11-02 | 2007-03-07 | 李木水 | Whole circuit temperature-controlling electric heating device |
| CN201039469Y (en) * | 2007-03-28 | 2008-03-19 | 张隆皇 | A constant temperature heating device and its heater |
| CN201044512Y (en) * | 2007-03-16 | 2008-04-02 | 青岛琴浦科技发展有限公司 | Automatic level setting thermoregulation electric blanket |
-
2011
- 2011-08-25 CN CN201110244939.9A patent/CN102314183B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2343922Y (en) * | 1998-09-30 | 1999-10-20 | 成都康虹电器有限公司 | Temp. controller for electric heating blanket |
| US20050189934A1 (en) * | 2004-02-27 | 2005-09-01 | Hitachi Global Storage Technologies Netherlands, B.V. | Efficient low dropout linear regulator |
| CN1925699A (en) * | 2006-11-02 | 2007-03-07 | 李木水 | Whole circuit temperature-controlling electric heating device |
| CN201044512Y (en) * | 2007-03-16 | 2008-04-02 | 青岛琴浦科技发展有限公司 | Automatic level setting thermoregulation electric blanket |
| CN201039469Y (en) * | 2007-03-28 | 2008-03-19 | 张隆皇 | A constant temperature heating device and its heater |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104661345A (en) * | 2013-11-22 | 2015-05-27 | 张隆皇 | Heating line control device |
| CN104661345B (en) * | 2013-11-22 | 2016-03-30 | 张隆皇 | Line with heating function control device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102314183B (en) | 2014-11-05 |
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