KR100883983B1 - Temperature controling device with non electromagnetic heating cable - Google Patents

Abstract

A temperature control apparatus is provided to adjust the temperature accurately by minimizing deviations of the control temperature according to the change of electrical resistance value due to length change of a heating cable. A heating unit(140) comprises a first heating cable, a second heating cable, a primary insulating member, a secondary insulating member and a final insulating unit. The first heating cable is wound at the upper portion of the primary insulating member in one direction. The second heating cable is wound at the upper portion of the secondary insulating member in a direction opposite to the first heating cable. Temperature setting and sensing unit(150) has a temperature controller. The temperature setting and sensing unit compares a reference voltage with a comparison voltage. An input unit(100) outputs setting signals for heating function, magnet function and sleep-mode function in accordance with user's operation. A controller(120) outputs a trigger signal for temperature adjustment in order to maintain or relieve heating mode of an electrical mat in accordance with comparison result between heating temperature of the electrical mat and heating temperature set by a user. An electrical mat driving unit(130) supplies power source to a heating unit in response to the trigger signal for temperature adjustment from the controller.

Description

TEMPERATURE CONTROLING DEVICE WITH NON ELECTROMAGNETIC HEATING CABLE}

The present invention relates to a temperature control device by magnetic field wiring of a double heating wire.

More specifically, the ends of a pair of heating wires wound in different directions are connected in series, and the pair of windings is made of a material whose resistance value changes with temperature and a material that does not have a magnetic field to cancel each other. In addition, the present invention relates to a temperature control device by magnetic field connection of a double heating wire that enables to sense the temperature of an electric mat.

As is well known, the heating wire structure of the temperature control device of the electrical mat for sensing the temperature of the electrical mat by using the heating wire to adjust the temperature is as shown in FIG. 1. Winding the heating wire (H1) in one direction, by extruding and insulating the secondary insulating member (K2) to a predetermined thickness on the upper side, and then the second heating wire (H2) in the upper direction opposite to the first heating wire (H1) Winding, and the final insulating member W is extruded to a predetermined thickness to insulate the upper portion of the second heating wire H2.

The first heating wire H1 and the second heating wire H2 have a structure in which one end is connected to each other, and heat is generated by applying power between the other first heating wire H1 and the second heating wire H2.

Therefore, as shown in FIG. 2, in order to detect the temperature of the heating wire, the heating wire temperature between the first heating wire H1 and the second heating wire H2 is detected, which is a time when power is not applied to the heating wire described later. This is possible by detecting the temperature (resistance value) of the heating wire. That is, the fixed resistor (R) is connected in series with the sensor resistor, and the voltage input through the fixed resistor (R) is divided by the fixed resistor (R) and the sensor resistor, and the sensor resistor is a resistor when the heating wire is heated. The value will change. The temperature controller of the electric mat reads the temperature according to the change of the sensor resistance and causes the electric mat to generate heat according to the temperature set by the user or the temperature set automatically.

However, as described above, when the heating temperature of the electric mat is measured, when the length of the heating wire becomes short, the sensor resistance value is changed, and an error of the measurement temperature occurs, so that the heating temperature of the electric mat is set by the user or automatically set. There is a problem with the temperature. That is, when the heating wire protrudes from the end of the mat to the front during the process of assembling the heating wire to the mat during the electrical mat manufacturing process, the worker cuts the heating wire to finish the process. As described above, when the hot wire is cut, the entire resistance value is changed, and an error occurs in the fixed resistance value and the sensor resistance value. Accordingly, there is a problem that an error occurs even when measuring the temperature of the electric mat.

The present invention connects the ends of a pair of heating wires wound in different directions to be connected in series, and the pair of windings to be made of a material whose resistance value is changed by temperature and a material that is not, to offset the magnetic field. In addition, to provide a temperature control device by the magnetic field connection of the double heating wire to detect the temperature of the electric mat, the purpose is.

In one embodiment of the present invention for achieving the above object, the first heating wire is wound in one direction on the upper portion of the primary insulating member, the secondary insulating member is extruded to a predetermined thickness on the upper portion, and then insulated therefrom. A heating unit configured to wind a second heating wire in a direction opposite to the first heating wire, and to have an upper portion of the second heating wire insulated by extruding the final insulating member to a predetermined thickness; A temperature controller is provided to allow the user to set the temperature of the electric mat, and outputs the voltage generated by the first heating wire and the second heating wire as a reference voltage, and outputs the voltage generated by the second heating wire as a comparison voltage. A temperature setting and detecting unit; An input unit configured to output a heat function, a magnet function, or a sleep mode function setting signal according to a user's operation; The electric mat is controlled to operate according to the function set by the input unit, and the heat generating temperature of the electric mat is sensed by comparing the reference voltage and the comparison voltage input from the temperature setting and detecting unit, and the detected heat generating temperature A controller for outputting a temperature control trigger signal to maintain and release the heating mode of the electric mat while comparing with the heating temperature set by the controller; And an electric mat driving unit for supplying driving power to the heat generating unit in response to a trigger signal for controlling the temperature of the controller.

The display unit may further include a display unit including a plurality of light emitting devices configured to emit light in order to inform the thermal mode, the magnet mode, and the sleep mode in response to the control of the controller.

The first heating wire is made of a material whose resistance does not change with temperature, and the second heating wire is made of a material whose resistance value changes with temperature in proportion to temperature.

The first heating wire is made of NiCU, and the second heating wire is made of CU.

The temperature setting and sensing unit includes a divider unit for outputting a reference voltage and a comparison voltage to the controller, and divides the reference voltage and the comparison voltage, respectively, and outputs them to the controller.

The temperature setting and detecting unit further includes a temperature sensor (NTC) for detecting ambient air temperature of the electric mat, and the controller detects the ambient air temperature when a sleep mode is set by the user. When the temperature input from the temperature sensor (NTC) is low, the NTC resistance increases to increase the temperature set voltage, and outputs a trigger signal for temperature control to the electric mat driving unit so that the heat generating unit generates heat and maintains the set temperature higher. When the temperature input from the temperature sensing temperature sensor (NTC) is high, the NTC resistance is lowered and the temperature set voltage is lowered to cut off the temperature control trigger signal output to the electric mat driver so that the heat generating part does not generate heat to a lower set temperature. To maintain a compensation function for the ambient temperature All.

In the ambient air temperature sensing temperature sensor, when the ambient air temperature is high, the resistance value is low, and when the ambient air temperature is low, the resistance value is preferably high.

The temperature setting and sensing unit may include: a switching element for driving when the resistance value of the ambient air temperature sensing temperature sensor is lowered, a temperature adjusting volume at which one end is connected to the electric mat driving unit, and the other end is grounded; It consists of a reference voltage supply means for supplying a reference voltage of the bed temperature when the volume for adjusting the temperature is shorted, a comparison voltage supply means for providing a comparison voltage, and a short-circuit detection means for detecting the short circuit of the heat generating unit. It features.

The controller includes a zero detector for outputting a zero detection pulse for each sine wave section, a short check pulse generator for generating a short check signal during a negative half wave period, which is a non-conduction period of the thyristor (SCR), and a heat set by a user. A plurality of latch units for receiving and outputting a function or magnet function or sleep function signal, a first A / D converter for converting and outputting a thermal signal of an electric mat set by a temperature setting volume into a digital signal, and from a heat generating unit The second A / D converter which converts the input heating signal into a digital signal and outputs the digital signal, compares the reference heating data of the first A / D converter with the heating data of the second A / D converter, and according to the comparison result. The first comparator for outputting a heating drive trigger signal and the heating data inputted from the second A / D converter and the short detection reference data are compared to each other. A high level signal is input to both the second comparator and the zero comparator and the second comparator to detect whether the first and second heat wires are in a short state and output a short detection signal according to the detection result. In this case, the temperature detection trigger signal generator for generating the temperature detection trigger signal and the heat check signal, the output signal and the sleep mode selection signal of the zero detector, the first comparator and the second comparator after the thermal mode is selected are all high level. When the signal is input, the warm mode switching signal generator for generating the warm mode switching trigger signal of the high level signal, the short check signal generator, the first comparator, the temperature detection trigger signal generator and the warm mode switching signal A heating drive signal generator for generating a heating drive signal when at least one of the output signal of the generator is output in the "H" state It is characterized by.

The thyristor of the electric mat driving unit is triggered every time the N second pulses of the short check signal generating unit are generated, and the "+" voltage of the power supply voltage sine wave of the first heating wire H1 and the second heating wire H2 is divided to generate a temperature reference voltage and a temperature. The sensor voltage (comparison voltage) is generated, and the controller converts and compares the temperature reference voltage converted into a digital signal and the temperature sensor voltage to determine the trigger output to the thyristor, and the "-" section of the power supply voltage sine wave. In the non-conduction period of the thyristor, the series resistance of the first heating wire H1 and the second heating wire H2 is detected to generate a short check pulse, and the resistor R10 and the first heating wire H1 and the second heating wire ( The first heating wire H1 and the second heating wire H2 are short-circuited when the divided voltage of H2 is detected to be equal to or less than the short check reference data.

Therefore, in the present invention, the ends of a pair of heating wires wound in different directions are connected in series, and the pair of windings is made of a material whose resistance value is changed by temperature and a material that is not, respectively, to offset the magnetic field. Not only that, but also to detect the temperature of the electric mat.

Hereinafter, the configuration of the present invention will be described with reference to the accompanying drawings.

As shown in FIG. 3, in the temperature control apparatus using the magnetic field-free connection of the double heating wire according to the present invention, the first heating wire H1 is wound in one direction on the first insulation member K1, and the second heating wire is wound on the second heating wire. The primary insulating member K2 is extruded to a predetermined thickness and insulated, and then the second heating wire H2 is wound around the first heating wire H1 in a direction opposite to that of the first heating wire H1. The heating unit 140 is formed by extruding the insulating member (W) to a predetermined thickness and insulated, and a temperature controller is provided so that the user can set the temperature of the electric mat, the first heating wire (H1) and the second heating wire A temperature setting and sensing unit 150 for outputting the voltage generated by the H2 as a reference voltage and outputting the voltage generated by the second heating wire H2 as a comparison voltage, and according to a user's operation, Input unit 100 for outputting the magnet function or sleep mode function setting signal A reference generated by the first heating wire H1 and the second heating wire H2 of the temperature setting and sensing unit 150 and controlling the electric mat to be operable according to a function set by the input unit 100. The heating voltage of the electric mat is sensed by using the comparison voltage (resistance value) that is changed in proportion to the temperature by receiving the voltage and the comparison voltage generated by the second heating wire H2, and the detected heating temperature is set by the user. The controller 120 outputs a trigger signal for temperature control so as to maintain and release the heating mode of the electric mat while comparing with the temperature, and the driving power is supplied to the heat generator 140 in response to the trigger signal for temperature control of the controller 120. It is composed of an electric mat driving unit 130 to be supplied.

The first heating wire H1 is made of NiCU, which is a material that does not change the resistance value by temperature, and the second heating wire H2 is made of CU, which is a material whose resistance value is changed in proportion to the temperature by temperature. That is, since the resistance value of the second heating wire H2 changes in proportion to the temperature, the controller 120 can detect the current heating temperature by using the resistance value. There may be a difference, but the same applies to the electric medium.

The temperature setting and sensing unit 150 includes dividers 151 and 152, respectively, when outputting a reference voltage and a comparison voltage to the controller 120, and after dividing the reference voltage and the comparison voltage, respectively, Output to the controller 120.

The temperature setting and detecting unit 150 further includes an ambient air temperature sensing temperature sensor (NTC) for measuring the ambient air temperature of the electric mat, and the controller 120 includes the electric temperature setting and detecting unit. It also has a temperature sensor (NTC) for detecting the ambient air temperature of the ambient air temperature,

When the sleep mode is set by the user, the controller increases the temperature setting voltage by increasing the NTC resistance when the temperature input from the ambient air temperature sensing temperature sensor NTC is low, thereby increasing the temperature to the electric mat driver 130. Outputs a trigger signal for adjustment to heat the heat generating unit 140 to maintain a high set temperature, when the temperature input from the ambient air temperature sensing temperature sensor (NTC) is high NTC resistance is lowered and the temperature set voltage is lowered By blocking the temperature control trigger signal output to the electric mat driving unit 130 to prevent the heat generating unit 140 to generate heat to maintain a lower set temperature to have a compensation function for the ambient temperature.

In this case, the ambient temperature sensor (NTC) for sensing the ambient air temperature may have a low resistance value when the ambient air temperature is high, and a high resistance value when the ambient air temperature is low.

The temperature setting and detecting unit 150 has one end connected to the transistor Q2 for driving when the resistance value of the temperature sensor NTC for ambient air temperature is lowered and the electric mat driver 130, and the other end The variable voltage VR for temperature control connected to the ground by the resistor R5, and the resistor R4 for supplying a reference voltage of the sleeping temperature when the transistor Q2 is turned on and the variable resistor VR is shorted. Resistor (R7) to provide a, and the resistor (R9) for detecting this when the heat generating unit 140 is short-circuited.

The controller 120 includes a zero detector 121 for outputting a zero detection pulse for each sine wave section, and a short check pulse generator 126 for generating a short check signal during a negative half-wave period, which is a thyristor (SCR) non-conduction period. And a plurality of latch units 122 to 124 for receiving and outputting a heat function, a magnet function, or a sleep function signal set by the user, and a heat signal of an electric mat set by the variable resistor VR as a digital signal. A first A / D converter 129a for converting and outputting, a second A / D converter 129b for converting and outputting a heating signal input from the heat generating unit 140 into a digital signal, and the first A / D converter A first comparison unit 127 for comparing the reference heat data input from the D converter 129a with the heating data input from the second A / D converter 129b, and outputting a heating driving trigger signal according to a comparison result; The second A / D converter By comparing the heating data inputted from the (129b) and the short detection reference data, it is detected whether the first heating wire (H1) and the second heating wire (H2) of the heating unit 140 is in a short state, the short according to the detection result When the high level signal is input to both the second comparator 128 outputting the detection signal and the output signals of the zero detector 121 and the second comparator 128, the temperature detection trigger signal and the thermal check The output signal and the sleep mode selection signal of the zero detector 121, the first comparator 127 and the second comparator 128 after the temperature detection trigger signal generator AND1 for generating the signal and the thermal mode are selected. Is input to "H", the warm mode switch signal generator AND2 for generating a warm mode switch trigger signal of a high level signal, the short check signal generator 126, the first comparator 127, Of the temperature detection trigger signal generator AND1 and the thermal mode switching signal generator AND2 When at least one of the output signal is output in the "H" state is made of a heating drive signal generator (NOR) for generating a heating drive signal.

The thyristor TH1 of the electric mat driving unit 130 is triggered every time the N second pulse is generated by the short check signal generation unit 126, and thus the power voltage sine wave of the first heating wire H1 and the second heating wire H2. The "+" voltage of is divided to generate temperature reference voltage and temperature sensor voltage (comparative voltage).

In this case, the controller 120 converts and compares the temperature reference voltage and the temperature sensor voltage converted into a digital signal to determine the trigger output to the thyristor, and the "-" section of the power voltage sine wave (non-conduction period of the thyristor) ) Detects the series resistance of the first heating wire H1 and the second heating wire H2 to generate a short check pulse, and divides the divided voltages of the resistor R10 and the first heating wire H1 and the second heating wire H2. When the detection becomes less than the short check reference data, it is determined that the first heating wire H1 and the second heating wire H2 are shorted.

Referring to the temperature control device by the magnetic field connection of the double heating wire configured as described above are as follows.

(Heating mode)

Referring to the heating mode, first, the power is turned on by the user, and the temperature is set using the temperature controller VR provided in the temperature setting and detecting unit 150, the AC waveform of FIG. DC power is converted into DC power through 110 and output through the transistor Q1 of the electric mat driver 130 is supplied to the gate terminal of the thyristor TH1, the thyristor TH1 is turned on, the thyristor TH1 Power is supplied to the first heating wire H1 and the second heating wire H2 of the heat generating unit 140, and the first heating wire H1 and the second heating wire H2 generate heat.

When the user selects the warm mode through the input unit 100 while operating as described above, the warm mode setting signal is input to the warm mode switching signal generation unit AND2 through the first latch unit 122.

The warm mode switching signal generator AND2 receives the temperature sensing signal, the short detection signal, and the sleep mode selection signal input from the first comparator 127, the second comparator 128, and the third latch part 124. If all of the input signals are high level, a high level warm mode signal is generated and output; otherwise, a low level warm mode signal is generated and output.

Then, the second comparator 128 receives the heating signal of the temperature setting and sensing unit 150 through the second A / D converter 129b. At this time, the heat generation data of the second A / D converter 129b is input to the first comparator 127, and the first comparator 127 converts the heat generation data into the set heat data of the temperature setting and sensing unit 150. In comparison, when the thermal data is large, the first comparator 127 outputs a high level signal to the heating driving signal generator NOR.

Since the heating drive signal generator NOR outputs a high level output signal only when a low level signal is input to the input terminal due to the characteristics of the circuit, the low heat level driving unit 130 connected to the output terminal of the heat generation drive signal generator NOR 130 has a low level. The signal is output. Since the heat transfer mat driver 130 is made of a PNP transistor, the transistor Q1 is turned on by a low level signal, and a high level signal is input to the gate terminal of the thyristor TH1, and eventually, the heat generating part ( DC power is supplied to the first heating wire H1 and the second heating wire H of the 140 to continuously generate heat.

The above heating mode continues continuously until the heating data inputted to the first comparator 127 becomes larger than the heating data.

On the other hand, if the low level signal is output because the heating data inputted to the first comparator 127 is higher than the heating data, only the low level signal is input to the input terminal of the heating driving signal generator NOR, and thus the high level is output. Outputs the signal of. Then, the switching element Q1 of the electric mat driving unit 130 is switched to the turn-off state, and as a result, a low level signal is also input to the gate terminal of the thyristor TH1, so that it is switched to the turn-off state. Since the power applied to the heat generating unit 140 is cut off, the first heating wire H1 and the second heating wire H2 do not generate heat.

(Zero detect mode)

Referring to the zero detect mode, first, the zero detector 121 outputs a high level zero detect signal (see waveform in FIG. 8A) in one cycle period of AC full-wave rectification. Will output The N second period pulse generator 125 outputs a high level signal (see waveform (b) of FIG. 8) to the temperature detection trigger signal generator AND1 in a time unit set during mass production of the electric mat.

At this time, when the high level sleep mode signal and the short detection signal are not input to the temperature detection trigger signal generator AND1, the low level signal is output to the heat generation drive signal generator NOR.

The low temperature signal is output to the output terminal unless the low level signal is input from the short check pulse generator 126 and the thermal mode switching signal generator AND2, and then the operation of the heating driving signal generator NOR is performed. In the same manner as described above to apply power to the first heating wire (H1) and the second heating wire (H2) of the heat generating unit 140 to generate heat, the controller 120 is the temperature setting and sensing unit 150 By receiving the heating signal through the electric mat heating temperature check can be made as described above.

(Short check mode)

On the other hand, the short check pulse generator 126 generates a short check pulse in response to the zero detector signal output from the zero detector 121 as shown in the waveform diagram (c) of FIG. 8 and outputs it to the heating driving signal generator NOR. do.

The low temperature signal is output to the output terminal unless the low level signal is input from the short check pulse generator 126 and the thermal mode switching signal generator AND2, and then the operation of the heating driving signal generator NOR is performed. In the same manner as described above to apply power to the first heating wire (H1) and the second heating wire (H2) of the heat generating unit 140 to generate heat, the controller 120 is the temperature setting and sensing unit 150 By receiving the heating signal through the electric mat heating temperature check can be made as described above.

(Sleep mode)

When the sleep mode is selected by the user, the ambient air temperature sensing temperature sensor TH1 has a low resistance value when the ambient air temperature is high and a high resistance value when the ambient air temperature is low. At this time, the transistor Q2 of the temperature setting and sensing unit 150 is turned on in response to the sleep mode setting signal.

As described above, the ambient air temperature sensing temperature sensor TH1 in the state where the transistor Q2 is turned on changes the resistance value according to the ambient air temperature to the first A / D converter 129a of the controller 120. A signal corresponding to the set temperature is input. That is, when the ambient air temperature is low, a signal is input to the first A / D converter 129a to recognize the set temperature as high, and when the ambient air temperature is high, the set temperature is low by the first A / D converter 129a. A signal is input which allows it to be recognized.

The resistor R9 of the temperature setting and sensing unit 150 is a short sensing resistor.

As described above, the preferred embodiment according to the present invention has been described, but the present invention is not limited to the above-described embodiment, and the present invention is not limited to the scope of the present invention as claimed in the following claims. Anyone with knowledge of the present invention will have the technical spirit of the present invention to the extent that various modifications can be made.

1 is a view for explaining the structure of the heating wire of the temperature control device of a conventional electric mat.

FIG. 2 is a circuit conceptual view illustrating a state in which a heating temperature of a heat generating unit is sensed using a first heating wire and a second heating wire.

3 is a block diagram illustrating a configuration of a temperature controller for canceling a magnetic field using a series winding according to the present invention.

4 is a detailed circuit diagram of FIG. 3.

FIG. 5 is a diagram illustrating a first heating line and a second heating line of the heating unit applied to FIG. 3.

FIG. 6 is a circuit conceptual diagram illustrating a state in which a heating temperature of a heating unit is sensed using a first heating wire and a second heating wire.

7 is a characteristic graph of the first heating wire and the second heating wire of FIG. 6.

8 is a waveform diagram applied to each part of a temperature controller for canceling a magnetic field using a series winding according to the present invention.

** Description of the symbols for the main parts of the drawings **

100: input unit

110: DC power generator

120: controller

121: zero detector

122 ~ 124: Latch

125: N second pulse generator

126: short check pulse generator

127: first comparison unit

128: second comparison unit

129a: first A / D converter

129b: second A / D converter

130: electric mat driving unit

140: heating unit

150: temperature setting and detection unit

160: display unit

Claims (10)

Winding the first heating wire in one direction on the primary insulating member, extruding and insulating the secondary insulating member to a certain thickness on the upper part, and then winding the second heating wire in the opposite direction to the first heating wire on the upper part, An upper part of the second heating wire configured to extrude and insulate the final insulating member to a predetermined thickness; A temperature controller is provided to allow the user to set the temperature of the electric mat, and outputs the voltage generated by the first heating wire and the second heating wire as a reference voltage, and outputs the voltage generated by the second heating wire as a comparison voltage. A temperature setting and detecting unit; An input unit configured to output a heat function, a magnet function, or a sleep mode function setting signal according to a user's operation; The electric mat is controlled to be operable according to the function set by the input unit, and the reference voltage and the second voltage generated by the first heating wire H1 and the second heating wire H2 of the temperature setting and sensing unit 150 are controlled. Receives the comparison voltage generated by the heating wire (H2) and detects the heating temperature of the electric mat using the comparison voltage (resistance value) that changes in proportion to the temperature, and compares the detected heating temperature with the heating temperature set by the user A controller for outputting a temperature control trigger signal to maintain and release the heating mode of the electric mat; And An electric mat driver for supplying driving power to the heat generator in response to a trigger signal for controlling the temperature of the controller; Characterized in that consisting of, The temperature setting and sensing unit includes a divider unit for outputting a reference voltage and a comparison voltage to the controller, and divides the reference voltage and the comparison voltage, respectively, and outputs them to the controller. Temperature control device by wiring. The method of claim 1, And a display unit including a plurality of light emitting elements that emit light in order to inform the heating mode, the magnet mode, and the sleep mode in response to the control of the controller. The method of claim 1, The first heating wire is made of a material whose resistance does not change with temperature, and the second heating wire is made of a material whose resistance is changed in proportion to the temperature by temperature. Device. The method of claim 3, wherein Wherein the first heating wire is made of NiCU, and the second heating wire is made of CU. delete The method of claim 1, The temperature setting and detecting unit further includes an ambient air temperature sensor (NTC) for measuring the ambient air temperature of the electric mat, The controller, when the sleep mode is set by the user, when the temperature input from the ambient air temperature sensing temperature sensor (NTC) is low, the NTC resistance is increased to increase the temperature set voltage, thereby triggering a temperature control trigger signal to the electric mat driver. Outputs the heat generating unit to heat up and maintains the set temperature higher, and when the temperature input from the ambient air temperature sensing temperature sensor (NTC) is high NTC resistance is lowered and the temperature set voltage is lowered and output to the electric mat driving unit Blocking the temperature control trigger signal to prevent the heating unit to generate heat to maintain a lower set temperature to have a compensation function for the ambient temperature, characterized in that the temperature control device by the magnetic field connection of the double heating wire. The method of claim 6, The temperature sensor for sensing the ambient air temperature has a low resistance value when the ambient air temperature is high, and a resistance value is high when the ambient air temperature is low. The method of claim 1, The temperature setting and detecting unit, When the resistance value of the ambient air temperature sensing temperature sensor is lowered, a switching element for driving, one end of which is connected to the electric mat driving unit, and the other end is grounded for the temperature control volume, and the switching element is turned on, and the volume for controlling the temperature is short. And a reference voltage supply means for supplying a reference voltage at a sleeping temperature, a comparison voltage supply means for providing a comparison voltage, and a short-circuit detection means for detecting the short circuit when the heating part is short-circuited. Temperature control device by wiring. The method of claim 1, The controller, A zero detector for outputting a zero detection pulse for each sine wave section, a short check pulse generator for generating a short check signal during a negative half-wave period, which is a non-conduction period of the thyristor (SCR), and a thermal function or a magnet function set by a user Or a plurality of latch sections for receiving and outputting a sleep function signal, a first A / D converter for converting and outputting a thermal signal of an electric mat set by a temperature setting volume into a digital signal, and a heating signal input from a heating section. A second A / D converter for converting the digital signal into a digital signal and outputting the reference thermal data of the first A / D converter and the heating data of the second A / D converter, and generating a heating drive trigger signal according to a comparison result. A first heating wire and a second column of the heat generating unit by comparing the first comparing unit which outputs an output unit with the heating data inputted from the second A / D converter and the short detection reference data; Detects whether the line is short and outputs a short detection signal according to the detection result, and a trigger for temperature detection when both the input signals of the zero detector and the second comparator are input and the "H" signal is input. When the temperature detection trigger signal generator for generating the signal and the heat check signal, the output signal of the zero detector, the first comparator and the second comparator, and the sleep mode select signal are all inputted after "H" is selected. At least one of a warm mode switching signal generator for generating a warm mode switching trigger signal of " H ", a short check signal generator, a first comparator, a temperature detection trigger signal generator, and a warm mode switching signal generator; When the signal is output in the "H" state by the magnetic field connection of the double heating line, characterized in that consisting of a heating drive signal generator for generating a heating drive signal A control device. The method of claim 1, The thyristor of the electric mat driving unit is triggered every time the N second pulses of the short check signal generating unit are generated, and the "+" voltage of the power supply voltage sine wave of the first heating wire H1 and the second heating wire H2 is divided to generate a temperature reference voltage and a temperature. Sensor voltage (comparative voltage) is generated, The controller converts and compares the temperature reference voltage converted into a digital signal and the temperature sensor voltage to determine the trigger output to the thyristor, and the first heating wire in the "-" period (non-conduction period of the thyristor) of the power voltage sine wave. (H1) and the series resistance of the second heating wire (H2) is detected to generate a short check pulse, and the divided voltage of the resistor (R10), the first heating wire (H1), and the second heating wire (H2) is detected and the short check reference is made. And the first heating wire (H1) and the second heating wire (H2) are short-circuited when the data is less than the data.

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