CN201876748U

CN201876748U - Electric blanket temperature controller manufactured with time base circuit

Info

Publication number: CN201876748U
Application number: CN2010205990594U
Authority: CN
Inventors: 陈子杨
Original assignee: Individual
Current assignee: Individual
Priority date: 2010-11-10
Filing date: 2010-11-10
Publication date: 2011-06-22
Anticipated expiration: 2020-11-10

Abstract

The utility model belongs to the technical field of electronic technology and temperature control, and relates to an electric blanket temperature controller manufactured with a time base circuit, which consists of a power source switch, resistance-capacitance step-down rectifying, voltage stabilizing and filtering circuit, a temperature control and regulating circuit, an electric heating cord driving circuit and an indicating circuit. The electric blanket temperature controller is characterized in that the temperature control circuit adopts a time base circuit NE555 and a heat-sensitive sensor, and the time base circuit NE555 outputs signals to trigger a bidirectional triode thyristor to control an electric heating cord to realize heating. The electric blanket temperature controller overcomes congenital shortcomings of an existing electric blanket temperature control switch in the market, is capable of controlling operating temperature of an electric blanket within a proper range for users, and accordingly thoroughly changes the current situation that the conventional electric blanket temperature can be controlled within two gears including a high-temperature gear and a low-temperature gear only.

Description

The electric blanket temperature controller of time spent base circuit production

Technical field

The utility model belongs to electronic technology and temperature control technology field, relates to a kind of electric blanket temperature controller of time spent base circuit production.

Background technology

At present, existing various single, double or double pair temperature control electric blankets on the market, almost temperature control has only two shelves, that is: high temperature shelves, low temperature shelves without exception.Because of the temperature of electric blanket between two grades of the high low temperature or can not carry out adjustment below the low temperature shelves, during use, temperature detect switch (TDS) is dialled at the high temperature shelves, Yin Wendu is higher in sleeping back is waken up by heat sometimes; Dial at the low temperature shelves, it is not enough to feel to obtain temperature during the elderly uses in the second half of the night.The working temperature of electric blanket is along with the user of temperature height or all ages and classes has different requirements, and the temp control switch of traditional electric blanket just seems too extensive and unsatisfactory in actual use.

In order to overcome on the market birth defect of existing electric blanket temperature gauge tap, be necessary to study a kind of controller that can the step-less adjustment electric blanket temperature, can be controlled at the user to the working temperature of electric blanket with it and feel proper scope.

Below describe the correlation technique of the electric blanket temperature controller making of time spent base circuit production in detail.

The utility model content

Goal of the invention and beneficial effect:

The electric blanket temperature controller of time spent base circuit production has overcome the defective of the existing congenital existence of electric blanket temperature gauge tap on the market, use it to be controlled at one to the working temperature of electric blanket and oneself feel proper scope, thoroughly changed traditional electric blanket and had only two grades of temperature controlled present situations of high and low temperature.

Technical characterictic: the electric blanket temperature controller of time spent base circuit production, form by power switch, resistance-capacitance depressurization rectifying and voltage-stabilizing and filtering circuit, temperature control and temperature regulation circuit, heating wire driving circuit, indicating circuit, it is characterized in that temperature control and temperature regulation circuit utilization time base circuit NE555 and heat sensitive sensor, trigger the heating of bidirectional triode thyristor control heating wire by time base circuit NE555 output signal.

The each several part circuit is formed and the mutual annexation of components and parts

1. resistance-capacitance depressurization, rectification, voltage stabilizing and filtering circuit: by power switch SW, decompression capacitor C1, bleeder resistance R1,2 silicon rectifier diode D1～D2, filter capacitor C2, voltage stabilizing diode D3 forms, following termination civil power one end of power switch SW, the upper end of power switch SW meets decompression capacitor C1 respectively, the upper end of bleeder resistance R1 and heating wire, the negative pole of the decompression capacitor C1 and the bleeder resistance R1 other end and silicon rectifier diode D1, the positive pole of silicon rectifier diode D2 links to each other, the anodal connection circuit ground (civil power lower end) of silicon rectifier diode D1, the negative pole of silicon rectifier diode D2 connects the negative pole of stabilivolt diode D3 and the positive pole of filter capacitor C2, the negative pole connection circuit ground of the positive pole of stabilivolt diode D3 and filter capacitor C2.

2. temperature is controlled and temperature regulation circuit: by time base circuit IC1 (NE555), half variable fine setting RP1～RP2, temperature control regulator potentiometer RP3, heat sensitive sensor BG1 forms, 4 pin and 8 pin of time base circuit IC1 meet positive pole of stabilized voltage supply VCC, 5 pin of time base circuit IC1 connect the lever arm of potentiometer RP3, the last termination positive pole of stabilized voltage supply VCC of potentiometer RP3, the following termination circuit ground of potentiometer RP3,6 pin of time base circuit IC1 connect the intermediate active end of half variable fine setting RP1, the collector of the last termination heat sensitive sensor BG1 of half variable fine setting RP1, the emitter of heat sensitive sensor BG1 meets positive pole of stabilized voltage supply VCC, the upper end of the following termination half variable fine setting RP2 of half variable fine setting RP1,2 pin of the intermediate active knee-joint time base circuit IC1 of half variable fine setting RP2, the following termination of half variable fine setting RP2 and the 1 pin connection circuit ground of time base circuit IC1.

3. heating wire driving circuit: form by triggering resistance R 2, bidirectional triode thyristor BCR and heating wire, the right-hand member that triggers resistance R 2 connects 3 pin of time base circuit IC1, trigger the control utmost point that resistance R 2 left ends connect bidirectional triode thyristor, bidirectional triode thyristor first anode T1 connects the lower end of heating wire, bidirectional triode thyristor second anode T2 connection circuit ground.

4. indicating circuit: be made up of LED 1 and dropping resistor R3, the positive pole of LED 1 connects 3 pin of time base circuit IC1, and the negative pole of LED 1 connects the upper end of dropping resistor R3, the following termination circuit ground of dropping resistor R3.

Principle of work: the mains supply of connecting the electric blanket temperature controller, the 220V alternating voltage is through C1, R1 resistance-capacitance depressurization current limliting, through silicon diode D1, D2 rectification, diode D3 voltage stabilizing, and process electrochemical capacitor C2 filtering obtains the 9V burning voltage that controller circuitry needs.2 pin evoked potential V2 and the valve current potential Vf of the travelling arm current potential decision time base circuit IC1 of potentiometer RP3, and 5 pin voltage V5=Vf=2 * V2 of time base circuit IC1.Because of V5=2 * V2, during the 6 pin V6 of time base circuit IC1 〉=Vf, time base circuit IC1 upset, make 3 pin of time base circuit IC1 become low level, LED 1 extinguishes, and bidirectional triode thyristor BCR ends, heating wire in the electric blanket stops heating, the electric blanket surface temperature begins to descend gradually, and the ICEO of heat sensitive sensor BG1 reduces thereupon, and the 2 pin V2 of 6 pin V6, the time base circuit IC1 of time base circuit IC1 are reduced gradually.When temperature drops to setting value, that is: when V6＜Vf, V2≤VZ, the 3 pin current potentials of time base circuit IC are got back to noble potential, and bidirectional triode thyristor BCR is by by becoming triggering and conducting, and heating wire begins the heating of switching on again again.So go round and begin again, make electric blanket temperature be maintained at all the time desired temperature near.

Description of drawings

Accompanying drawing is the circuit working schematic diagram of the electric blanket temperature controller of time spent base circuit production.

IC1 is a time base circuit in the accompanying drawing, and model is NE555; RP3 is the temperature control regulator potentiometer; BG1 is a heat sensitive sensor; Be meant the lower end of civil power (AC220V) circuit in the accompanying drawing.

Embodiment

Technical requirement according to the schematic diagram of circuit working shown in the accompanying drawing and description of drawings and the following stated is implemented, and can realize the utility model.

Component parameter and selection

1.IC1 be time base circuit, model is NE555;

2.BG1 should select 3AG Series P NP type high frequency low power tube for use;

3.BCR be small-sized bidirectional triode thyristor, require working current 1A, more than the withstand voltage 400V;

4.D1, D2 is silicon rectifier diode, model is 1N4007; D3 is the 9V/1W stabilivolt;

5.LED1 be red light emitting diodes;

6.RP1, RP2 is half variable fine setting, resistance is respectively 5K Ω, 10K Ω; RP3 is the temperature control regulator potentiometer, should select linear potentiometer, resistance 15K Ω;

7.R1 be dropping resistor, resistance 680K Ω; The resistance of resistance R 2 is 10K Ω; The resistance of resistance R 3 is 910 Ω;

8.C1 be decompression capacitor, capacity is 0.68 μ F/400V; Electrochemical capacitor C2 is a dc filter capacitor, and capacity is 1000 μ F/25V;

9. the power of heating wire is 45～50W/220V in the electric blanket.

Make main points:

The making of temp probe: heat sensitive sensor BG1 can draw with resistant to elevated temperatures thin and soft wire, and heat sensitive sensor BG1 is packed in the aluminium shell of capacitor together with the pin joint, filling heat-conductive silicone grease and sealing with resistant to elevated temperatures resin glue in the aluminum hull.During use, temp probe is placed on the electric blanket suitable position gets final product.

Circuit debugging:

Circuit working schematic diagram shown in the drawings to specifications, the welding correctness and the welding quality of whole components and parts in the check circuit.It is intact to need only element quality generally speaking, and the circuit welding is errorless, and controller is connected with the mains and got final product operate as normal.

Adjust potentiometer RP3, make V5=2 * V2 of time base circuit IC1, during the 6 pin V6 of time base circuit IC1 〉=Vf, time base circuit IC1 upset makes 3 pin of time base circuit IC1 become low level.

It is zero that adjusting half variable fine setting RP2 can make temperature range; When adjusting half variable fine setting RP2 makes the V2=V6 of time base circuit IC1, the temperature control scope maximum of potentiometer RP3.

Claims

1. the electric blanket temperature controller of time spent base circuit production, form by power switch, resistance-capacitance depressurization rectifying and voltage-stabilizing and filtering circuit, temperature control and temperature regulation circuit, heating wire driving circuit, indicating circuit, it is characterized in that temperature control and temperature regulation circuit utilization time base circuit NE555 and heat sensitive sensor, drive the heating of bidirectional triode thyristor control heating wire by time base circuit NE555 output trigger pip.

2. the electric blanket temperature controller of time spent base circuit production according to claim 1, it is characterized in that resistance-capacitance depressurization, rectification, voltage stabilizing and filtering circuit are by power switch SW, decompression capacitor C1, bleeder resistance R1,2 silicon rectifier diode D1～D2, filter capacitor C2, voltage stabilizing diode D3 forms, one end of the following termination civil power of power switch SW, the upper end of power switch SW meets decompression capacitor C1 respectively, the upper end of bleeder resistance R1 and heating wire, the negative pole of the decompression capacitor C1 and the bleeder resistance R1 other end and silicon rectifier diode D1, the positive pole of silicon rectifier diode D2 links to each other, the anodal connection circuit ground of silicon rectifier diode D1, the negative pole of silicon rectifier diode D2 connects the negative pole of stabilivolt diode D3 and the positive pole of filter capacitor C2, the negative pole connection circuit ground of the positive pole of stabilivolt diode D3 and filter capacitor C2.

3. the electric blanket temperature controller of time spent base circuit production according to claim 1, it is characterized in that temperature control and temperature regulation circuit are by time base circuit IC1, half variable fine setting RP1～RP2, temperature control regulator potentiometer RP3, heat sensitive sensor BG1 forms, 4 pin and 8 pin of time base circuit IC1 meet positive pole of stabilized voltage supply VCC, 5 pin of time base circuit IC1 connect the lever arm of potentiometer RP3, the last termination positive pole of stabilized voltage supply VCC of potentiometer RP3, the following termination circuit ground of potentiometer RP3,6 pin of time base circuit IC1 connect the intermediate active end of half variable fine setting RP1, the collector of the last termination heat sensitive sensor BG1 of half variable fine setting RP1, the emitter of heat sensitive sensor BG1 meets positive pole of stabilized voltage supply VCC, the upper end of the following termination half variable fine setting RP2 of half variable fine setting RP1,2 pin of the intermediate active knee-joint time base circuit IC1 of half variable fine setting RP2, the lower end of half variable fine setting RP2 and the 1 pin connection circuit ground of time base circuit IC1.

4. the electric blanket temperature controller of time spent base circuit production according to claim 1, it is characterized in that the heating wire driving circuit forms by triggering resistance R 2, bidirectional triode thyristor BCR and heating wire, trigger 3 pin that resistance R 2 right-hand members meet time base circuit IC1, trigger resistance R 2 left ends and connect the bidirectional triode thyristor control utmost point, bidirectional triode thyristor first anode T1 connects the heating wire lower end, bidirectional triode thyristor second anode T2 connection circuit ground.

5. the electric blanket temperature controller of time spent base circuit production according to claim 1, it is characterized in that indicating circuit is made up of LED 1 and dropping resistor R3, the positive pole of LED 1 connects 3 pin of time base circuit IC1, the negative pole of LED 1 connects the upper end of dropping resistor R3, the following termination circuit ground of dropping resistor R3.