KR100738310B1 - Heat Mat Temperature Controller - Google Patents

Abstract

The present invention adopts a conductor electric resistance that changes the resistance value at the same time as the heating line of the temperature controller is changed at the same time by adjusting the resistance value proportional to the temperature to accurately control the temperature of the heat transfer mat temperature The controller relates to a heat mat temperature controller to further compensate the temperature of the temperature detector 150 by further reinforcing the temperature compensator 170, the positive feedback circuit 180, the safety circuit 190 and the error correction circuit 195. The heating temperature of the thermal wire can be detected without error, and the output control signal output from the temperature comparator 140 can be stably output, and the heater N1 and the sensor N2 are short-circuited so that the sensor N2 can be detected. If all the commercial power is applied to the temperature comparator 140, the high voltage sensing voltage is supplied to the output terminal TH to turn off the heat generating power supplied to the heater (N1). And so, the error caused by each component element that is connected to the sensor (N2) or the temperature setting unit is characterized in that to remove them manually.

Description

Heat transfer mat temperature controller {THE ELECTRIC HEAT MAT CONTROLLER}

1 is a block diagram for explaining the configuration of an insulating mat temperature controller according to the present invention;

2 is a detailed circuit diagram of FIG. 1;

3 is a circuit diagram for describing an operation of an electric field display unit applied to FIG. 1;

Figure 4 is a side view for explaining a heating wire (detection line) applied to the present invention.

5 is a negative temperature characteristic graph of the detection line formed of a conventional nylon,

6 is a graph of temperature characteristics detected from a heating wire (detection line) applied to the present invention.

*** Explanation of symbols on main parts of drawing ***

105: thermal portion

110: DC power supply

120: electric field display portion

130: single zero potential detection unit

140: temperature comparison unit

150: temperature detector

160: temperature setting unit

170: temperature compensation unit

180: positive feedback circuit

190: safety circuit

195: error correction circuit

S1, S2: Sensor winding

H1, H2: heating coil

The present invention relates to an electrothermal mat temperature controller.

In more detail, the heat transfer is used to precisely control the temperature of the heat transfer mat by adjusting the resistance value proportional to the temperature by adopting a conductor electric resistance that changes in resistance at the same time as the temperature is changed by the heating line of the temperature controller. It relates to a mat temperature controller.

In general, the heat transfer mat equipped with a temperature controller is easy to use and easy to move because it is easily heated when laid on the floor and supplied with power.

In the case of the phase control method used in the conventional electrothermal mat controller, the accuracy of the temperature control is greatly reduced, and switching noise is generated in a wide range of frequency bands, causing a malfunction of the circuit, and using shielding means such as a line filter to remove the noise. Therefore, the price goes up, there is a difference in the intensity (force) by the electric field generated incidentally with heat from the heat generating means, but there is a problem that harmful electromagnetic waves (EMI) emitted to the object or life is bad.

In addition, the heating line employed in the conventional heat transfer mat was determined by the nylon sensor (NYLON SENSOR) temperature control value. In this case, the nylon sensor has negative temperature characteristics as shown in FIG. 5 according to the physical properties that contain moisture or vary by external temperature. Accordingly, there is a problem in that the nylon sensor can not accurately determine the temperature control value because the deviation of the detected temperature is severe.

In addition, each component element constituting the temperature controller employed in the conventional heat transfer mat has a problem that it is difficult to set a constant set temperature (voltage) value by varying or different voltage values at the time of initial shipment or external temperature change.

In addition, the temperature controller employed in the conventional heating mat has a problem that must be cut off by connecting the heating wire to a separate fuse in order to block it when an overvoltage occurs.

The present invention has been made to solve the problems of the prior art as described above, the object of the present invention is to adopt a conductor electric resistance of the resistance value is changed at the same time as the temperature is changed by the heating line of the temperature controller in a proportional relationship with the temperature. It is to provide a heat transfer mat temperature controller that can accurately control the temperature of the heat transfer mat by adjusting the resistance value.

In addition, another object of the present invention is set by using the variable resistor employed even if the variable resistance is adopted by the initial shipment of each component element constituting the temperature controller by the variable resistor, or the variable variable according to the external temperature change or affected by a different voltage value. It is to provide a heat transfer mat temperature controller that can set the temperature (voltage) value arbitrarily.

In addition, another object of the present invention is to adopt a positive feedback (positive feed back) circuit so that the voltage value is lower when the voltage input to the temperature comparison unit is lower, and the voltage value is higher when the voltage input to the temperature comparison unit is high It is to provide a heat transfer mat temperature controller to prevent the operation error of the temperature comparison unit to occur.

In addition, another object of the present invention is to provide a heat transfer mat temperature controller having a separate capacitor on one side of the voltage detection circuit to prevent the output terminal when the overheat occurs.

One embodiment of the present invention proposed to solve the technical problem as described above, the thermal portion 105 made of a flexible wire-shaped thermal wire, sensor winding (S1) (S2) and the heating winding (H1) (H2) And a cold terminal of a DC power supply unit 110 that receives commercial AC power AC1 and AC2 and supplies a DC constant voltage required for operation of each circuit, and a cold terminal of an outlet to which the sensor winding S2 receives commercial AC power. The electric field indicator 120 detects whether the light is connected to the hot terminal or the hot terminal, and determines whether the light emitting diode is turned on or off according to the detection result so that the electric field is discharged to the outside. Thermal line control by comparing a single zero potential detector 130 that obtains a square wave pulse voltage having a predetermined width with the positive voltage, and a temperature of the thermal part 105 and a set temperature of the thermal part set by a user. God In the heat transfer mat temperature controller including a temperature comparator 140 for outputting a call, the temperature detecting unit 150 for detecting the temperature of the heat sensing unit 105 and outputting the temperature to the temperature comparator 140, the user It is possible to set the heat generation temperature of the heat sensing unit 105, and is connected to the temperature setting unit 160 and the temperature detection unit 150 for outputting the set heat generation temperature to the temperature comparison unit 140, the temperature detection unit 150 The temperature compensator 170 for compensating the temperature of the heat sensitive line to detect the heating temperature of the thermal line without an error, and the thermal control unit (S) so that the output control signal output from the temperature comparator 140 can be stably output. The positive feedback circuit 180 and the heater N1 and the sensor N2 are short-circuited to delay the voltage supplied from the 105 to the temperature comparator 140 so that the voltage is supplied to the sensor N2. Temperature ratio in case of full power Connected to the safety circuit unit 190 and the sensor N2 to switch the output terminal TH to the off state by supplying the sensing voltage in the high state to the grant 140 so that the heating power is not supplied to the heater N1. It is characterized in that it comprises an error correction circuit unit 195 for manually removing the error caused by each of the component elements.

The temperature compensator 170 includes diodes D6 and D10, and when the sensor windings S1 and S2 of the sensor N2 detect the heating temperature of the heating windings H1 and H2. Compensating for the error caused by the forward voltage of the diode (D2) of the temperature detector.

The positive feedback circuit unit 180 includes resistors R5 and R13 and a capacitor C5, and a half-wave output voltage of the output terminal TH1 is charged to the capacitor C5 via a resistor R5. Discharge by the resistor (R13) is characterized in that for increasing the temperature set value input to the temperature comparator 140.

The safety circuit unit 190 includes a diode D7, a capacitor C1, and a resistor R6, and when the heating coils H1, H2, and sensor windings S1, S2 are short-circuited, the sensor windings The commercial power applied to (S1) and (S2) is supplied to the non-inverting terminal (+) of the temperature comparison unit 140 to output a high (H) level signal, and is inverted by the transistor Q2 to be output terminal TH1. ) Is to be off.

The error correction circuit unit 195 is configured of a variable resistor R18, and the sensor windings S1 and S2 of the sensor N2 detect the heating temperature of the heating windings H1 and H2 according to the inspector's operation. When it is characterized in that to eliminate the temperature detection error caused by the external conditions.

Hereinafter, the heat transfer mat temperature controller will be described in detail with reference to the accompanying drawings.

The heat transfer mat temperature controller according to the present invention, as shown in the accompanying drawings, Figs. 1 and 2 is a heat-sensitive portion consisting of a heat-sensitive wire in the form of a flexible wire, sensor winding (S1) (S2) and heating winding (H1) (H2) ( 105, AC power source AC1 (AC2) for supplying AC power source AC for heat generation to the heat generating windings H1 and H2 of the heat sensing unit 105, and DC constant voltage required for operation of each circuit. Whether the DC power supply unit 110 and the sensor winding S2 are connected to a cold terminal or a hot terminal of an outlet receiving commercial AC power, the light emitting diode is turned on or off according to the detection result. An electric field display unit 120 to determine whether an electric field is discharged to the outside, and a single zero potential detector to obtain a square wave pulse voltage having a predetermined width during the period in which the AC power source rises from a negative voltage to a positive voltage. 130) and the temperature of the thermal portion 105 A temperature comparator 140 for comparing the set temperature of the heat sensitive part set by the user and outputting a thermal line control signal, and a temperature detector for detecting the temperature of the heat sensitive part 105 and outputting the temperature to the temperature comparator 140 ( 150, the user to set the heat generating temperature of the thermal wire, and the temperature setting unit 160 and the temperature detecting unit 150 is connected to the temperature detecting unit 150 to output the set heat generating temperature to the temperature comparing unit 140 The temperature compensator 170 for compensating the temperature of the heating line 150 so as to detect the heating temperature of the thermal line without error and the voltage supplied from the thermal part 105 to the temperature comparator 140 may be delayed and then supplied. The positive feedback circuit unit (Positive Feed back, 180) to prevent the output terminal (TH1) according to the short duty ratio of the temperature comparison unit 140, and the heater (N1) and the sensor (N2) is short-circuited to the sensor ( N2) will take full commercial power Safety circuit unit 190 and sensor (N2) to prevent the heating power is supplied to the heater (N1) by switching the output terminal (TH) to the off state by supplying the sense voltage of the high state to the right temperature comparison unit 140 Or an error correction circuit unit 195 for manually removing an error caused by each component element connected to the temperature setting unit 160.

The DC power supply unit 110 smoothes the rectified diodes D4 and D5 connected to the rear end of the capacitor C2, the resistor R3 and the capacitor C2 connected in series with the power switch SW. The capacitor C3 and the zener diode ZD1 for constant voltage smoothing direct current, AC power is stepped down by the resistor R3 and the capacitor C2.

The resistor R3 protecting the DC power supply unit 110 absorbs and removes a rush current (rush current or surge voltage) flowing into the first and second AC power supply lines AC1 and AC2 to supply the DC power supply unit 110. Protect each part that makes up.

Both ends of the AC power source AC1 AC2 are connected to an active switching element having a trigger terminal, for example, an output element TH made of SCR and a heating winding H1 and H2 in series to form a heating circuit. On both ends of the heating windings H1 and H2, an overheat prevention diode D1 is connected in parallel.

As illustrated in FIG. 4, the heat-sensitive portion 105 has a heat resistance wound around the heat-resisting winding core K in a spiral manner and spirally wound the heating winding H1 and H2. It consists of an insulating nylon thermistor (K1) and a sensor winding (S1) (S2) wound around the outer circumference of the nylon thermistor (K1) to detect the temperature voltage by resistance change of positive (+) temperature characteristics (PTC characteristics). The outer surface of the sensor winding (S1) (S2) is covered with an insulating coating (K2a) as a finishing material, the heating winding (H1) (H2) is wound in the opposite direction to each other over the entire heating section by the return portion (HC) The structure cancels more than 95% of the magnetic field.

Detailed description of the thermal portion 105 is described in the registered utility model 20-0413919 filed by the present applicant, it will be omitted here.

The electric field display 120 includes a resistor R30 for limiting a current sensed by the detector ANT and then inputting it to the inverting input terminal (-) of the level comparators U1-C, and a power plug connected to the power outlet. The detector ANT detects a peripheral potential (spatial potential) of 60 Hz at the time of reverse insertion, and the alternating current near 60 Hz is passed by the time constants of the detector ANT, the resistor R31, and the capacitor C11. The divided voltage inputted to the non-inverting input terminal (+) through a filter for blocking high frequency noise much higher than 60 Hz, the voltage input from the detector ANT, and the resistors R28 and R29. Compares the reference voltage and VCC to determine the hot potential or cold potential, and if it is hot, it is connected to the output of the level comparator (U1-C) and the level comparator (U1-C). Capacitor C10 and pull for supplying current so that the light emitting diode D13 and the light emitting diode D13 are turned on. It consists of a resistance (R26).

Thus, when the user connects and connects the plug to the outlet so that the sensor N2 is connected to the cold terminal of the outlet, as shown in FIG. 3, the switch is switched to the ⓐ terminal so that the AC power source AC2 and the sensor N2 are connected. ) Is in a cold state, and the equipotential to the earth, so that the current between the antenna and the earth through the capacitor (C) between the antenna and the ground becomes a minimum, and the inverting terminal (-1-) of the level comparator (U1-C) of the electric field display unit 120 When the non-inverting terminal (+) is input below the reference level, the level comparator U1-C outputs a high level (“H”) signal, so that the light emitting diode D13 is turned on and the heater Since the electric field emitted from N1 is shielded and absorbed by the sensor N2 and connected to the ground, the electric field of the heat radiation lines H1 and H2 is minimized.

On the other hand, when the user connects and connects the plug to the outlet so that the sensor N2 is connected to the hot terminal of the outlet, the switch is switched to the ⓑ terminal so that the AC power source AC2 and the sensor N2 are in a hot state, and the antenna and earth The current flowing between the antenna and the ground is maximized through the capacitor C between the terminals and the reference voltage of the non-inverting terminal (+) to the inverting terminal (-) of the level comparators U1 -C of the electric field display unit 120. Since it is input as above, the output of the level comparator U1-C outputs a low level signal "L", which causes the capacitor C10 to be discharged and the light emitting diode D13 to be extinguished. The electric field of S2) becomes the hot state, and therefore, when the light emitting diode is extinguished, it is recognized that the electric field is the maximum and the plug must be removed from the outlet and changed in the opposite direction.

On the other hand, the single zero potential detector 130, unlike the half-type zero potential detector (Half thpe Zero Voltage Detector) for detecting the pulse at the leading edge (falling edge) and the leading edge (failing edge) of the AC power source is different from the AC power source. In the zero potential region rising from the negative voltage to the positive voltage, a single square wave pulse having a width of 0.5 ms to 3 ms is detected and used as a trigger signal of the output element TH1 so that no harmful electromagnetic wave (EMI) is generated. .

The single zero potential detector 130 includes a resistor R4 for applying AC power to the forward diode D15 and the reverse diode D18, and a resistor R25 connected to an inverting input terminal of the comparators U1-A ( R34) and diodes D17 and D19, and resistors R24 and diodes D15 and D19 and capacitors C6 connected to the non-inverting input terminals of the comparators U1-A. Single section rising from (-) voltage to (+) voltage, that is, voltage input to inverting input terminal (-) of comparator (U1-A) and non-inverting input terminal (+) of comparator (U1-A) In the overlapping voltage range, a negative single-wave pulse with a pulse width of 0.5 Hz to 3 Hz is generated, and the square wave pulse is inverted by the transistor Q1, followed by quarter division and thermal line H. Temperature detection and triggering (switching) of the output element TH composed of SCR.

The width of the square wave pulse 0.5 kHz is the minimum value for detecting the temperature and the minimum value for the output element TH to maintain the trigger state. That is, when the square wave pulse width is too narrow, less than 0.5 Hz, the sensor windings S1 and S2 may not detect the temperature voltage or an error may occur when the temperature is compared, and the trigger current of the output element TH may be held. Under current, the output element TH may malfunction. And if the square wave pulse width exceeds 3㎳, since the temperature comparison and the trigger of the output element (TH) can be generated at the point far beyond the zero potential point, harmful electromagnetic wave (EMI) may be generated, so the pulse width of 0.5㎳ ~ 3㎳ This is preferred.

The square wave pulse width may be appropriately varied by adjusting the time constant values of the resistor R24 and the capacitor C6, and the square wave pulse is a half period of the width based on the zero voltage point of the sine wave of the power supply voltage. In the negative potential period of the AC power source, the temperature of the heat sensing unit 105 is detected and compared, and the output element TH1 is triggered (switching) in the positive potential period of the AC power source which is 1/2 of the remaining width. Let's do it.

The temperature comparator 140 includes a temperature comparator U1-B, a resistor R10, a capacitor C8, a diode D9, and a temperature comparator connected to a non-inverting input terminal of the temperature comparator U1-B. A resistor R27 (R16) and a capacitor C4 connected to the inverting input terminal of U1-B.

The temperature detector 150 includes a winding portion n2 including a resistor R1 and a diode D2 to which a single square wave pulse voltage is applied, and a sensor winding S1 and S2 having PTC resistance characteristics.

The temperature setting unit 160 includes a resistor R11 to which a single square wave pulse voltage is applied, resistors R16 and R15 connected in series, and a variable resistor R2 connected in parallel with the resistor R16. The resistor R16 is connected in parallel with the variable resistor R2, so that the temperature setting voltage can be set more finely.

Meanwhile, the temperature detection voltage detected by the sensor windings S1 and S2 is a voltage obtained by dividing the single square wave pulse voltage input through the resistor R1 by the resistor R1 and the sensor winding winding N2. When the voltage of the sensor winding winding part n2 is transferred from the heating windings H1 and H2 to the sensor windings S1 and S2 through the nylon thermistor K1, the sensor windings S1 of the PTC resistance characteristics. The resistance of S2 is changed, and the single square wave pulse voltage is changed by the resistance change. At this time, the temperature characteristic detected from the sensor windings S1 and S2 is the heat generation temperature of the heating windings H1 and H2 by adjusting the resistance value in a proportional relationship between the resistance value and the temperature as shown in FIG. Can be adjusted accurately.

That is, the sensor windings S1 and S2 detect the heating temperature of the heating windings H1 and H2 as voltages, and are input in real time to the non-inverting input terminals (+) of the temperature comparators U1-B. The temperature set voltage set by the variable resistor R2 of 160 is inputted to the inverting input terminals (-) of the temperature comparators U1-B and compared.

At this time, when the sensor winding (S1) (S2) detects the temperature voltage, some current may be induced from the heating winding (H1) (H2), as described above, the cathode side of the output element (TH), for example, the output element ( An AC power source having a negative (-) component that affects the temperature voltage detection by connecting the heating winding H1 (H2) of the heat sensing section 105 between the cathode of TH) and the second AC power supply line AC2. ), Accurate temperature voltage detection and stable temperature control are achieved.

The temperature compensator 170 is composed of diodes D6 and D10, and the temperature compensator 170 includes the sensor windings S1 and S2 of the sensor N2 of the heating windings H1 and H2. When detecting the exothermic temperature, the error caused by the forward voltage of the diode D2 of the temperature detector is compensated for.

That is, the voltage VCC output through the single zero voltage detector 130 and inverted by the transistor Q1 is supplied to the sensor N2 through the resistor R1 and the diode D2 of the temperature detector 150. Part of the voltage VCC supplied to the sensor N2 is lost due to the forward voltage of the diode D2. Although the amount of the loss is minute, the heating winding H1 and H2 of the sensor N2 are minute. It acts to detect the exothermic temperature of so that an error occurs. Accordingly, the diodes D6 and D10 of the temperature compensator 170 compensate for a value that may be lost by the diode D2 so that the sensor N2 accurately detects the heating temperature of the heating windings H1 and H2. To be output to the temperature comparison unit 140.

Positive feedback circuit (Positive Feed back, 180) is composed of a resistor (R5) (R13) and a capacitor (C5), and when the output terminal (TH1) is conducting a positive (+) half wave of the power supply to H1, this voltage The capacitor C5 is charged while passing through the resistor R5, and the voltage charged by the capacitor C5 is discharged through the resistor R13 to affect the temperature setting unit 160. That is, when the sensor N1 detection voltage input to the non-inverting terminal (+) of the temperature comparator 140 and the temperature set value input to the inverting terminal (-) are small, the on / off cycle of the output terminal TH1 is reduced. The short-wave output voltage of the output terminal TH1 is charged to the capacitor C5 through the resistor R5 and discharged by the resistor R13 to be input to the temperature comparator 140. Allow the temperature set point to rise.

The safety circuit unit 190 is composed of a diode D7, a capacitor C1, and a resistor R6, and the safety circuit unit 190 is short-circuited between the heating windings H1, H2, and the sensor windings S1, S2. In this case, the commercial power applied to the sensor windings S1 and S2 is supplied to the non-inverting terminal (+) of the temperature comparator 140 so that a high level signal is output to the output of the temperature comparator 140. As a result, the output terminal TH1 is turned off by being inverted by the transistor Q2 to prevent overheating of the thermal wire and the heat transfer mat, thereby preventing a fire.

The error correction circuit unit 195 is composed of a variable resistor R18, component elements connected to the sensor N2, component elements constituting the temperature setting unit 160, and components constituting the positive feedback circuit unit 180. The values are changed by the inspector on the basis of the test results before the heat transfer mat is shipped to remove the errors caused by the components and the like, which may affect the operation of the sensor N2.

The present invention is not limited to the above embodiments, and various modifications and changes can be made by those skilled in the art, which are included in the spirit and scope of the present invention included in the appended claims.

The present invention having the above-described configuration, operation and preferred embodiment adopts a conductor electric resistance that simultaneously changes the resistance value as the temperature is changed by the heating line of the temperature controller, thereby adjusting the resistance value in proportion to the temperature to heat transfer mat. It is effective to accurately control the temperature of the.

In addition, the present invention employs a variable resistor to set the temperature (voltage) using the variable resistor employed even if the initial variable of each component element constituting the temperature controller, or variable depending on the external temperature change or affected by other voltage values ) It is effective to set the value arbitrarily.

In addition, the present invention employs a positive feed back circuit so that the voltage value is lower when the voltage input to the temperature comparator is low, and the voltage value is higher when the voltage input to the temperature comparator is high. There is an effect that the operation error of the temperature comparison unit does not occur.

In addition, the present invention has an effect that the output terminal is not operated by providing a separate capacitor on one side of the voltage detection circuit unit in order to block it when an overvoltage occurs.

In addition, the present invention has an effect that the output terminal is not operated by providing a separate capacitor on one side of the voltage detection circuit unit in order to block it when an overvoltage occurs.

Claims (5)

The thermosensitive part 105 consisting of a flexible wire-type thermal wire, sensor windings S1, S2, and heating windings H1, H2, and a commercial AC power source AC1, AC2 are supplied for operation of each circuit. Detects whether the DC power supply unit 110, which supplies the required DC constant voltage, and the sensor winding S2 are connected to a cold terminal or a hot terminal of an outlet receiving commercial AC power. The electric field display unit 120 which is turned on or extinguished so as to know whether the electric field is discharged to the outside, and the single which acquires the square wave pulse voltage having a predetermined width during the period in which the AC power source rises from the negative voltage to the positive voltage. In the electrothermal mat temperature controller including a zero potential detection unit 130, and a temperature comparison unit 140 for comparing the temperature of the thermal portion 105 and the set temperature of the thermal portion set by the user to output a thermal line control signal , A temperature detector 150 which detects the temperature of the heat sensitive portion 105 and outputs it to the temperature comparison unit 140; A temperature setting unit 160 for allowing a user to set a heating temperature of the heat sensing unit 105 and outputting the set heating temperature to the temperature comparing unit 140; A temperature compensator 170 connected to the temperature detector 150 to compensate for the temperature of the temperature detector 150 so that the heating temperature of the thermal line can be detected without error; Positive feedback circuit unit for delaying the voltage supplied from the thermal part 105 to the temperature comparator 140 so that the output control signal output from the temperature comparator 140 can be stably output. Feed back, 180), When the heater N1 and the sensor N2 are short-circuited and all the commercial power is applied to the sensor N2, the high voltage sensing voltage is supplied to the temperature comparing unit 140 so that the output terminal TH is turned off. Safety circuit unit 190 to prevent the heating power from being supplied to the heater N1, Error correction circuit unit 195 for manually eliminating the errors caused by the component elements connected to the heater (N1) Electrothermal mat temperature controller, characterized in that consisting of. The method of claim 1, wherein the temperature compensator 170, And diodes D6 and D10, and when the sensor windings S1 and S2 of the sensor N2 detect the heating temperature of the heating windings H1 and H2, the diodes D2 of the temperature detection unit The heat transfer mat temperature controller, characterized in that for compensating for the error caused by the forward voltage. The method of claim 1, wherein the positive feedback circuit unit 180, Comprising a resistor (R5) (R13) and a capacitor (C5), the half-wave output voltage of the output terminal (TH1) is charged to the capacitor (C5) via a resistor (R5), and discharged by the resistor (R13) The heat transfer mat temperature controller, characterized in that to increase the temperature set value input to the temperature comparator (140). The method of claim 1, wherein the safety circuit 190, Comprising a diode (D7), a capacitor (C1) and a resistor (R6), the short circuit between the heating winding (H1) (H2) and the sensor winding (S1) (S2) is applied to the sensor winding (S1) (S2) The commercial power is supplied to the non-inverting terminal (+) of the temperature comparator 140 to output a high (H) level signal, and is inverted by the transistor Q2 so that the output terminal TH1 is turned off. Electrothermal mat temperature controller. The method of claim 1, wherein the error correction circuit unit 195, It is composed of a variable resistor (R18), the temperature generated according to external conditions when the sensor winding (S1) (S2) of the sensor (N2) detects the heating temperature of the heating winding (H1) (H2) according to the operator's operation Heat transfer mat temperature controller, characterized in that to remove the detection error.

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