KR102504060B1 - Automatic safety device for temperature control of heating mat - Google Patents

Abstract

The present invention relates to an automatic safety device of the temperature control of a heating mat by recognizing the state of use using a plurality of sensors, wherein the overheating of a heating mat can be prevented depending on whether the heating mat is used, and the convenience of use can be enhanced. Provided is an automatic safety device of the temperature control of a heating mat by recognizing the state of use using a plurality of sensors, wherein a plurality of vibration sensors having excellent vibrating directions and sensitivity are installed on a top plate on which a human being lies and a temperature controller (controller manipulation panel circuit board) manipulated by a user, respectively so that the vibration sensors capable of detecting shocks and vibration sensitively can be installed on the heating mat to precisely and accurately recognize whether a user is using the mat, thereby smartly controlling the heating operation of the heating mat, and wherein a micro-controller provided in a temperature controller (temperature controller manipulation panel) board performs smart control algorithm in conjunction with a temperature sensor based on the detection signals of the vibration sensors, thereby controlling the heater temperature raising of the heating mat to be optimized for safety and convenience.

Description

Automatic safety device for temperature control of heating mat using multiple sensors

[0001] The present invention relates to an automatic safety device for controlling the temperature of a thermal mat using a plurality of sensors that can accurately detect whether or not a thermal mat is being used, and more specifically, in the absence of a user on a thermal mat used in a bed, etc. It efficiently controls the temperature so that the heated heating mat does not overheat and reduces the user's cumbersome temperature manipulation in the conventional heating mat, making it convenient to use and at the same time enhancing safety reliability. It is about temperature control automatic safety device.

Fields of application of the technology of the present invention include all beds with thermal mats such as stone beds and earth beds that are heated and heated, as well as thermal mats that are placed on the floor and used instead of the thermal mats placed on the bed, and the temperature connected to the thermal mat It will be said to include all heating mat devices equipped with a regulator.

In general, harmful toxicity and radiation are generated from cement and stone materials of buildings generated during heating, which is not pleasant and causes disease. Our ancestors have long since adopted a construction method that allows them to live warmly with heat by constructing a structure of ocher or Gudeuljang in the house environment.

An ondol (heating) bed for local heating that reaches the steaming temperature in a short time like the floor of the old-fashioned room has been developed and has been widely used in recent years. are doing

The electric heating mat refers to not only a heating mat of a mattress made of a cushion for the floor that is commonly used, but also a stone bed (stone bed) such as jade stone, granite stone, marble, ball stone, and a crystal board (amethyst board), and a panel made of ocher or soil. It will be said to include all the thermal mats of the bed (hereinafter referred to as an earth bed or loess bed) formed.

The structure of a universal electric heating mat for beds is to use a thick stone or hardened ocher panel for the heating mat top plate (heating plate) so that it can be installed and used on the bed, or expose the stone and ocher material to the bed as a top plate, It is configured by laminating a board material to withstand the load applied on the bed, such as a synthetic resin panel or a wooden panel (including MDF plywood) at the bottom thereof, and a heating element such as a hot wire or hot water pipe is installed below the top plate to generate heat from the heating element. It is designed to function as a heating heater by transferring heat to a top plate made of stone or ocher. The structure of these electric heating mats for thermal beds has been used by adopting various upper plates that conduct heat, such as soil, stone, and amethyst, as needed.

Stone beds and earthen beds, which can perform the role of ondol by integrally equipping the bed with these stone and loess heating plates instead of cushion mattresses, are also popular among consumers, and are also placed on the floor or on the bed like a topper. There is also a considerable demand for electric heating mats that are placed and used.

In the above-described structure of the conventional electric heating mat, a heating element made of a heating wire or a hot water pipe having a conventional bimetal and a temperature sensor is arranged on a heat-resistant synthetic resin layer or a foamed resin layer, and the layer on which the heating element is arranged is arranged. It is made by embedding a heating plate of metal plate material in the upper part, and placing a heating plate made of a stone plate, a clay plate, a wooden plate, or a charcoal plate on top of the heating plate. The upper portion of the heating plate may be finished with a linoleum or monorium finish. In general, the temperature controller for controlling the temperature of the heating element is directly mounted on the bed frame in the case of a heated bed type, and is provided separately by wiring to a heating mat in the case of a non-bed type.

The high temperature generated in the heating element by the temperature controller heats the heating part (heating plate) by surface contact direct heating method, whereby the heating part (heating plate) is heated and generates heat.

In general, when the heating mat is set to a high temperature, the pillow or blanket is particularly overheated, and sometimes the user suffers low-temperature burns. In particular, if you forget to turn off the heating mat or lower the temperature, In addition to unnecessary power consumption, a number of fire accidents occur due to overheating of the above-mentioned intensively heated part.

also. In general, thermal mats have a problem that when the surrounding room temperature is high, the actual temperature at which the mat is heated is higher than the set temperature compared to when the room temperature is low, as well as various environmental factors such as humidity, dust, insects, etc. However, deterioration of semiconductors used as switching elements of the power stage in the temperature controller (including deterioration due to component lifespan), poor contact of connecting parts and soldering parts, and program errors due to power supply instability such as shock noise, etc. Due to various causes, the current runaway phenomenon supplied to the heater (heating element) may be accelerated, resulting in overheating of the electronic parts of the heater or thermostat.

Of course, various protective devices such as various fuses including temperature fuses and bimetals are provided in the heating mat or thermostat. Safety certification and follow-up management are also provided, but the above-mentioned safety certification does not correspond to total inspection of products produced and sold. Therefore, it is preferable that the manufacturer conducts quality control such as aging inspection for all products before releasing the product. are doing

Nevertheless, it is not possible to rule out the possibility that parts or wires constituting the heating mat and the thermostat may be damaged or short-circuited due to various adverse factors described above.

In addition, depending on the heating state, the risk of a fire accident can be eliminated if a heating item, such as a tablet PC using a battery, a smartphone, etc. does not exist.

Therefore, it is important for the user to recognize the temperature state of the heating mat and precisely control the temperature. However, it is not easy for the user to recognize the temperature state and precisely control the temperature, and this process is often very cumbersome.

- Republic of Korea Patent Registration No. 10-0781579 (Announcement date: December 07, 2007) - A technique for detecting a human body as a temperature controller has been previously disclosed. Like Korean Patent Registration No. 10-0781579 (published on December 7, 2007), a 'bed environment controller' equipped with a sensor that automatically turns on and adjusts the temperature as the human body is detected by a sensor that detects the weight of the human body has been disclosed. Here, it is composed of a composite button that has power, operation, and out function in one, so that it operates while indicating the power on function when pressed once, the operation function when pressed again, and the out function when pressed again. When a human body is detected at a specified value by using a sensor that measures a standard weight value and detecting a human body for a certain period of time by setting a reference weight value, a signal is automatically generated to warm the temperature to a designated temperature by the control unit. it was working to do it.

According to the above-mentioned prior art literature, in using a cold stone bed by heating, it takes a long time to warm the cold stone bed when going out and returning home, as well as for going out and returning, The operation method, such as having to operate a button, is very difficult or cumbersome for the middle, middle-aged and elderly people who are the main users of the stone bed (soil bed), and it is not only the elderly, but also the bed when going out in the daily life of modern society, which is busy living on time. There is a great concern about forgetting to turn off or lower the heat.

The present invention has been made to solve the above-mentioned conventional problems, and is technically implemented so that the power is automatically safely cut off and the power saving function is automatically performed without the user having to separately manipulate the going out function of the heating mat. aims to do

In addition, an object of the present invention is to provide optimal safety and convenience by automatically performing a temperature control function by smartly and quickly insulating and heating a heating mat.

The present invention for achieving the above object,

A vibration sensor that can sensitively detect shock or vibration is installed at the bottom of the heating mat to accurately and accurately recognize whether the user is using the mat, and to smartly control the warming operation of the heating mat heater. Vibration direction and sensitivity A plurality of excellent vibration sensors are installed on the thermal mat itself on which people climb and on the temperature controller (controller operation panel circuit board) operated by the user, respectively, and based on the detection signals of the vibration sensors, the temperature controller in conjunction with the temperature sensor ( A smart control algorithm is performed on the microcontroller provided in the controller control panel (controller circuit board) to optimally control the heater heating of the heating mat for safety and convenience. Heating mat temperature control by recognizing usage status by multiple sensors We want to provide an automatic safety device.

As such, the present invention smartly distinguishes between a state in which there is no possibility of using the heating mat and a state in which the heating mat is used without a separate user operation to prevent overheating of the heating mat and waste of power, as well as convenience in temperature setting There is an effect of increasing the convenience of using the automatic safety function and the heating mat to increase and perform the safety function of highly reliable temperature control.

1 is a configuration circuit diagram of a temperature control safety device for a thermal mat according to the present invention;
2a and 2b are schematic perspective views of a bed and a mat showing a concept in which a vibration sensor according to the present invention is disposed, respectively;
3a and 3b are schematic perspective views showing a substrate mounting structure of a vibration sensor according to an embodiment of the present invention;
Figure 4a is a schematic perspective view showing the concept of a temperature controller circuit board and its wiring pattern on which a plurality of vibration sensors of the circuit corresponding to Figure 1 according to the present invention are installed;
Figure 4b is a schematic perspective view showing a circuit board equipped with a vibration sensor and its structure in case of a two-channel heating heating mat in accordance with Figure 4a of the present invention;
5 is a waveform diagram showing an example of a microprocessor input signal when the first and second vibration sensors of FIGS. 1 and 4A of the present invention are connected in series;
6 is a unique signal waveform diagram of a sensor generated when a vibration sensor used in the present invention is subjected to a pressure impact once.

Referring to the circuit diagram of FIG. 1, the configuration and operation of the present invention will be described.

In the present invention, a vibration sensor capable of detecting vibration in the front, rear, left and right directions and rotational directions is configured as shown in the circuit diagram of FIG. 1, and FIGS. In this case, it is installed as shown in the example in which each vibration sensor is disposed), and the board is mounted as shown in FIG. 3a (vibration sensor mounted on a board with a fixed lead) and FIG. 3b (a vibration sensor mounted on a board with a tension lead), and FIGS. As shown in the drawing of 4b, it is arranged and configured on the circuit board (pcb) corresponding to the circuit of FIG.

In the present invention, a plurality of vibration sensors are disposed by being divided into two types in terms of a method, and the first vibration sensor (SR1), one of which is a circuit board (pcb) of the temperature controller (100, operation panel part) as shown in FIG. The second vibration sensor SR2 is preferably installed on the bed side mat of FIG. 2A or on the non-bed heating mat side of FIG. 2B, that is, on the inner panel surface of the heating mat on which a person climbs, The second vibration sensor SR2 on the mat side is installed in the same way as the third vibration sensor SR2', which is a sensor of the same type, in the case where the thermal mat is for 2 channels and is spaced apart from each other in accordance with the 2 channels.

The plurality of vibration sensors are used to sense movement vibration in front, back, left and right and rotational directions. In a vibration sensor mounted on a mat, due to the sensor's unique sensing characteristics, the front and rear and left and right directions are sensed when a person goes up and down on a bed mat or on a bed. It is suitable for detecting movement that bumps into or contacts the side of the mat, and detection of rotation direction can be directional detection suitable for detecting load change according to human body movement on the bed mat.

Referring to FIG. 1, the circuit configuration in which the plurality of vibration sensors SR1 and SR2 are connected to the microcontroller U1 is described. 1 Connected and supplied to one terminal (B) of the vibration sensor (SR1), and the other terminal (A) of the first vibration sensor (SR1) connects to one side of the second vibration sensor (SR2) via connector CN3'-connector CN3 It is connected to the terminal (A) and the other terminal (B) of the second vibration sensor (SR2) is branch-connected to the grounded resistor R28 and connected to the input terminal (No. 17 pin) of the microcontroller U1 to generate the first and second vibration sensors. It is configured to input the composite detection signals of the sensors SR1 and SR2 to the microcontroller U1.

The composite detection signal of the two vibration sensors SR1 and SR2 by this circuit is to obtain the overlapping signal of each vibration sensor SR1 and SR2 as a microcontroller input signal, as shown in the drawing of FIG. Acquisition of such a signal further increases the detection accuracy of the impact being applied to the mat. 6 is a unique signal characteristic waveform of the sensor, and this waveform is shown in FIG. 5 as an example.

For example, if only vibration applied to the heating mat is detected through the bottom surface of the bed on which the mat is placed, and only vibration applied to the controller through the bed frame is applied, in these two cases, the user is not considered to be on the bed mat. It is to detect as a logic that does not. As an example, as long as there is a difference in the distance at which the vibration of shock detection is transmitted due to the installation distance between the first and second vibration sensors, it will be sensed as a sensing waveform between the series-connected sensors SR1 and SR2 as shown in FIG. Accordingly, in the case of a bed, as shown in FIG. 5, the waveform period is slightly different, and as an overlapping detection signal, it can be obtained as an input signal of the microcontroller u1 (the third signal in FIG. 5), and through this signal, the microcontroller u1 It is possible to clearly detect whether or not the user uses the mat by performing comparison calculations based on pre-programmed data.

If the mat is of a two-channel heating method, as shown in FIG. 4B, it is implemented as a second vibration sensor (SR2) and a third vibration sensor (SR2') connected in parallel to each other and merged with the first vibration sensor (SR1) to form a serial and parallel analog type. A sensing circuit will be implemented.

On the other hand, although not separately shown in FIGS. 1 and 4, each of the vibration sensors SR1 and SR2 is separately connected to the input terminal of the microcontroller U1 as a separate circuit, and an AND gate (AND) in the internal program of the microcontroller U1 It can be configured to obtain a result similar to or different from that of FIG. 5A by performing digital processing with GATE logic or OR GATE logic. However, in the detection circuit of such a digital logic, in the case of AND gate logic, if two sensing signals are high level, high level is determined, and if only one signal is high level, low level is determined. As shown in FIG. 5, two vibration sensors (SR1) It is not easy to process a weak signal finely detected in one of (SR2, SR2') into an analog level for the signal level by digital processing, but the two detection signals (SR1) (SR2, SR2' are high level). In this case, if the two high levels are subdivided and the lower one of the strong and weak detection signals is selected as the priority and the priority level is adopted as the input signal to be programmed, it is the same as the detection circuit of the analog signal processing method of FIG. 5. Vibration sensor signal detection result will be obtained.

The present invention transmits the vibration detected signal to the 17th pin of the microcontroller as described above so that the microcontroller U1 detects the user's return state, shock or earthquake, etc., and uses it as a signal to perform the time counting algorithm. It is configured. The seismic sensing should be controlled so that the seismic wave input is programmed in advance so that the seismic wave is maintained at a safe temperature state if the seismic wave is detected as not being used by humans.

In the present invention, the time counting is the first time counting until just before switching to a mode in which the user mat is not used when the time in which there is no input signal of the vibration sensors (SR1) (SR2) (SR2') continues, and the It may be configured to include a second time counting in which counting is terminated for a predetermined period of time from the end of the first time counting to just before the start of switching to the safe mode.

Alternatively, time counting to warm up even in a state where the human body is not in use (unused state) by vibration sensors (SR1) (SR2) (SR2'), and a safety temperature mode (like pressing the safety button Time counting until switching to the same display indication) may also be included.

In the drawing of FIG. 1, the microcontroller U1 has a terminal CN2 to which pin 5 and pin 13 are connected to one end of the temperature sensor grounded on the other side, and the input side of the photocoupler (phototriac) PC1 (the anode is connected to VCC connected through the resistor R7 connected to the photodiode side cathode).

The triac Q1 gated by the photocoupler (phototriac) PC1 is configured to connect/block the AC220V power supply current (V220) to the heater on the heating plate side grounded on the other side through the terminal CN2.

In addition, as a user input device, the other side of S1 to S5, which are reservation, safety, power, lower, and raise buttons, is grounded and one side thereof is connected to the micro It is connected to the 10th pin of the controller, and as the voltage is divided at the midpoint of both resistors at the branch point of the resistors (R13, R14, R15, R16, R17) and the resistor R18, the operation signal of the voltage value that distinguishes each button operation It is configured to input to the microcontroller U1.

In addition, some pins (pins 6, 7, 8, 9, 10, 11) of the microcontroller U1 are connected to the two-digit segment FND1 to display the temperature numerically. The number displayed at this time is configured to display the setting value according to the button operation when the button is operated, and to display the heating temperature detected by the temperature sensor connected to the terminal J2 when there is no button operation.

The two vibration sensors SR1, SR2, and SR2' sense multidirectional shocks or vibrations in the X, Y, and θ axes, and are preferably located at the bottom of the mat as shown in FIGS. 2A, 2B, and 4B. One or more vibration sensors (SR2) (SR2') are installed and connected to the vibration sensor (SR1) mounted on the circuit board inside the temperature controller 100 to connect the two vibration sensor circuits of FIGS. 1, 4a and 4b make up together

The temperature controller 100 shown in FIG. 2 (hereinafter referred to as a temperature controller enclosure panel in which the circuit of FIG. 1 is embedded) receives AC power through a power plug 300. X, Y axes, front/back, left and right detection are suitable for detecting the movement of a person lying on the mat, and rotation direction detection, the θ axis, is suitable for detecting changes in human movement while pressing the human body weight on the mat. As the sensing, it was exemplified in the above description of the embodiment of the present invention.

The vibration sensor SR2 is installed on the inside of a stone bed, a mud bed or a heated floor mat, that is, the lower part of the mat, and at the same time the vibration sensor SR1 is installed on the circuit board (PCB) inside the temperature controller 100 1, 4a (FIG. 4b) in connection with the two sensors SR1 and SR2, and programming the algorithm and operation sequence routine for control into the microcontroller U1. .

The program components for the above-described control include storage of the user input set temperature and safety temperature, smart recognition of whether or not a heating mat is used, time counting, temperature control operation order, and various related data values based thereon. corresponds to the element.

The range of the algorithm defined in the present invention is counting a certain amount of time (time) to heat the heater in a state where there is no vibration detection, set temperature, safe temperature and its difference value, time vs. temperature variation slope value, vibration sensor signal pulse Input time counting and the like will correspond, and the routine will be said to correspond to the above algorithm execution sequence.

In addition to the general artificial temperature setting operation, the execution routine of the algorithm according to the present invention will be described with reference to FIG. 1 as follows.

When the vibration sensor (SR1) (SR2) does not detect vibration or shock, the current flow of the triac Q1 is continuously controlled by counting the time immediately after the detection of the shock or vibration and switching to the safe temperature mode function It is possible to adopt a method of performing as a method, a method of maintaining the temperature for a predetermined period of time, then counting the time from that time and cutting off the power until it reaches a safe temperature. Run on controller U1.

That is, in the microcontroller U1, when there is no shock or vibration recognition after a predetermined time while counting the time after a predetermined time while maintaining the temperature, the temperature controller 100, for example, 35 ~ 40 ℃ of the temperature controller 100 If the temperature is set and goes out and is not recognized by a person's shock or vibration detection, after turning on the LED on the safety button side of the temperature controller 100 (the LED that lights up when the safety button is pressed; reference numeral LD2 in FIG. 1), connector CN2 The temperature of the mat is set to drop to a safe temperature of 30°C by the heater control connected to and the detection of the temperature sensor, and after that, if any of the control buttons (S1 to S5) is recognized to be operated, or through the heating plate, the vibration sensor (SR1 ) (SR2), when shock or vibration is recognized, it operates to return to the temperature (35 to 40 ° C) previously operated by the user.

Any of the control buttons S1 to S5 may be operated by knocking on the body panel of the temperature controller 100 instead of being operated. It is done by perception.

On the other hand, in the method for recognizing shock or vibration by a person in the present invention, the signal wavelength of the vibration sensor is a long wavelength with a large amplitude of two or more times over a certain period, a long wavelength with a large and small amplitude, and a short wavelength An example of a case in which this continuity is combined and inputted at a certain period or more, and the long and short wavelengths can be adjusted by setting the resistance values of resistors R27 and R28 in FIG. 1 .

Every time the power is turned on, the microcontroller starts the program, and as a default value pre-programmed and stored in a predetermined register area allocated internally, the interrupt (or initial coding) temperature performed by the detection signal of the vibration sensor (SR1) (SR2) It is stored as data values (safety temperature 30℃ control data value and LED lighting control data value on the safety button side). The default temperature value for safety in such an emergency is to return the set temperature to the temperature value previously operated by the user when the button operation signal of any one of the buttons is input to pin 3 of the microcontroller U1 To return the mat heating to that temperature It is programmed to control heater heat by supplying power current to the heater while receiving feedback from the temperature sensor at the pre-operated temperature, and operates accordingly.

In the embodiment of the present invention, a vibration sensor is used as a vibration sensor having a substantially cylindrical or square column shape as shown in the first half of the drawing, but as an example, as shown in FIG. vibration can be detected. In addition, as shown in FIG. 6B, the terminals on both sides of the vibration sensor are connected to an extension terminal using a spring tension means, and the extension terminal is connected and fixed to the copper foil pattern of the circuit board to amplify the vibration. The amplified vibration can be output as a detection signal. However, according to this embodiment, due to elasticity, the vibration sensor can more easily sense vibration transmitted from the side as well as vibration transmitted from the lower circuit board.

Therefore, according to the present invention, it is possible to more easily detect whether or not the user is close to the mat (bed) by the sensing directionality and the sensing vibration wavelength characteristics of the vibration sensor.

1 is an embodiment by limiting the optimal resistance value bias setting so that the vibration sensor SR1 (SR2) can detect not only a very short pulse wave impact (vibration) but also a pulse wave impact with a slightly large timing width. As shown, the difference in values of R27 and R28 can be adjusted to adjust the sensitivity by setting the bias value of the vibration sensor in the circuit of FIG. 1, and the resistance value (1K) of the resistor R1 (corresponding to R27 in FIG. Ohm), if the resistance value of R27 is slightly higher than that of R28 (corresponding to R28 in FIG. A sensitive characteristic would be sensitive.

Vibration with a very small pulse width can be consciously excluded from the vibration (shock) to be detected by the vibration sensor SR1 (SR2) (SR') for the implementation of the present invention by adjusting the sensitivity, if necessary. Likewise, it is an invention that can fine-tune even the sensitivity of vibration detection for smart recognition of whether people are using it for safety cutoff.

In particular, the sensitivity of the vibration sensor can be adjusted differently depending on the degree of vibration detection of the vibration sensor installed on the heating mat and the vibration sensor mounted on the circuit board in the thermostat 100.

In the present invention, it is also possible to use a vibration sensor of a different type than a cylindrical vibration sensor, and it is possible to use two or more vibration sensors instead of one by attaching them to different parts of the mat or bed frame and using the vibration sensor. It should be regarded as the scope of simple substitution within the scope of the present invention, even to separate the horizontal direction only and the vertical direction only.

On the other hand, the present invention sets the resistance values of the resistors R27 and 28 so that the level of the detection signal output by the vibration detection from the vibration sensor and input to the microcontroller U1 has a maximum value, and at the same time, known to the microprocessor U1. A seismic pulse waveform model is stored in advance, and when a vibration waveform similar to the seismic pulse waveform model is input, a program routine is additionally programmed to control not to perform a monitoring routine for determining whether the user mat is used while switching to a safe mode. In addition to numerous other functions, a safety function in case of an earthquake can be added and implemented.

Claims (11)

delete A heating mat having a heating mat having a heater and a temperature sensor for thermal control, and a temperature controller 100 connected to the heater and having a user manipulation input unit for thermal control of the heater and a display unit displaying an operating state. In the device,
A vibration sensor 200 capable of detecting vibration in the front and rear, left and right, and rotational directions of the heating mat is connected to the internal circuit of the temperature controller 100,
The temperature controller 100 has a control microcontroller U1 in its internal circuit, receives input signals from the vibration sensor 200, the temperature sensor, and the user manipulation input unit installed on the heating mat side, and operates the heater and A circuit is configured to output a control signal of the display unit,
The microcontroller U1 receives the detection signal of the vibration sensor 200 and performs a time counting algorithm to determine whether or not the thermal mat is used, and at the same time, the pulse voltage amplitude and pulse of the detection signal of the vibration sensor 200 A program is executed to determine whether the thermal mat is in use using the cycle width, and after determining whether the thermal mat is in an unused state, the current is supplied to the heater of the thermal mat to reach a pre-stored safe temperature of 30°C by switching to a safe mode. is controlled, and when a signal recognized as a user thermal mat use state is input through the vibration sensor, a program is performed to return to the user-set temperature before the safe mode conversion,
The vibration sensor is configured by installing one first vibration sensor (SR1) in the temperature controller 100 and installing one or more second vibration sensors (SR2) in the heating mat,
The first vibration sensor (SR1) installed on the substrate in the temperature controller 100 and the second vibration sensor (SR2) installed on the thermal mat are connected in series to the input terminal of the microcontroller U1, thereby enabling the first vibration sensor ( When the detection signals of the SR1) and the second vibration sensor (SR2) are overlapped and input to the microcontroller U1, the use state-recognizing heating mat temperature control automatic safety by a plurality of sensors, characterized in that configured to recognize the user use state Device.
A heating mat having a heating mat having a heater and a temperature sensor for thermal control, and a temperature controller 100 connected to the heater and having a user manipulation input unit for thermal control of the heater and a display unit displaying an operating state. In the device,
A vibration sensor 200 capable of detecting vibration in the front and rear, left and right, and rotational directions of the heating mat is connected to the internal circuit of the temperature controller 100,
The temperature controller 100 has a control microcontroller U1 in its internal circuit, receives input signals from the vibration sensor 200, the temperature sensor, and the user manipulation input unit installed on the heating mat side, and operates the heater and A circuit is configured to output a control signal of the display unit,
The microcontroller U1 receives the detection signal of the vibration sensor 200 and performs a time counting algorithm to determine whether or not the thermal mat is used, and at the same time, the pulse voltage amplitude and pulse of the detection signal of the vibration sensor 200 A program is executed to determine whether the thermal mat is in use using the cycle width, and after determining whether the thermal mat is in an unused state, the current is supplied to the heater of the thermal mat to reach a pre-stored safe temperature of 30°C by switching to a safe mode. is controlled, and when a signal recognized as a user thermal mat use state is input through the vibration sensor, a program is performed to return to the user-set temperature before the safe mode conversion,
The vibration sensor is configured by installing one first vibration sensor (SR1) in the temperature controller 100 and installing one or more second vibration sensors (SR2) in the heating mat,
A first vibration sensor (SR1) installed on a substrate in the temperature controller 100 and a second vibration sensor (SR2) installed on the thermal mat are connected in series to each other and connected to the microcontroller U1 as an input terminal, A plurality of plural, characterized in that the heating mat is further provided with a third vibration sensor (SR2') disposed in the heating mat at a distance from the location of the second vibration sensor (SR2) and connected in parallel with the second vibration sensor (SR2). An automatic safety device that controls the temperature of the thermal mat with a sensor that recognizes the use condition.
A heating mat having a heating mat having a heater and a temperature sensor for thermal control, and a temperature controller 100 connected to the heater and having a user manipulation input unit for thermal control of the heater and a display unit displaying an operating state. In the device,
A vibration sensor 200 capable of detecting vibration in the front and rear, left and right, and rotational directions of the heating mat is connected to the internal circuit of the temperature controller 100,
The temperature controller 100 has a control microcontroller U1 in its internal circuit, receives input signals from the vibration sensor 200, the temperature sensor, and the user manipulation input unit installed on the heating mat side, and receives input signals from the heater and A circuit is configured to output a control signal of the display unit,
The microcontroller U1 receives the detection signal of the vibration sensor 200 and performs a time counting algorithm for determining whether or not the thermal mat is used, and at the same time, the pulse voltage amplitude and pulse of the detection signal of the vibration sensor 200 A program is executed to determine whether the thermal mat is in use using the cycle width, and after determining whether the thermal mat is in an unused state, the current is supplied to the heater of the thermal mat to reach a pre-stored safe temperature of 30°C by switching to a safe mode. is controlled, and when a signal recognized as a user thermal mat use state is input through the vibration sensor, a program is performed to return to the user-set temperature before the safe mode conversion,
The vibration sensor is constituted by installing one first vibration sensor (SR1) in the temperature controller 100 and installing one or more second vibration sensors (SR2) in the heating mat,
The first vibration sensor SR1 installed in the thermostat 100 and the second vibration sensor SR2 installed on the heating mat are connected to the input terminal of the microcontroller U1 to supply independent detection signals, and the microcontroller U1 is configured to determine whether to use a heating mat by program operation of the detection signals of the first vibration sensor (SR1) and the second vibration sensor (SR2) with AND gate logic. Mat temperature control automatic safety device.
The method according to any one of claims 2 to 4, wherein the time counting algorithm in the microcontroller U1 is in a state in which there is no detection signal input from the first vibration sensor (SR1) and the second vibration sensor (SR2). A first time counting algorithm that performs counting while comparing the time until just before determining whether the user's mat is in a non-used state, and the safe mode immediately after determining whether the mat is in an unused state, which is the end of the first time counting, A second time counting algorithm for performing counting while comparing the time immediately before conversion with the pre-stored set time.
The method of claim 5, wherein the microcontroller U1 is connected to the input side of the photocoupler U2 and supplies/cuts off AC power to the heater embedded in the heating mat by a triac Q1 gated by the photocoupler U2. An automatic safety device for controlling the temperature of a thermal mat that recognizes the state of use by a plurality of sensors configured to control.
The method of claim 5, wherein the other ends of each of the reservation, safety, power, lower, and raise buttons as user input devices are grounded, and one end of the opposite side to the ground is resistors of different resistance values (R20, R21, R22, R23, R24) is connected to the input terminal of the microcontroller U1, and as the voltage is divided at the midpoint of both resistors at the branch point of the resistors (R20, R21, R22, R23, R24) and the resistor R19, the voltage at which each button operation is distinguished It is configured to input the manipulation signal of the value to the microcontroller U1,
When the second time counting is completed when the time counting algorithm is performed, the microcontroller U1 executes the same program routine as inputting and manipulating the safety button to switch to the safe mode, and at the same time, by inputting a detection signal from a vibration sensor, the microcontroller U1 operates. An automatic safety device for controlling the temperature of a thermal mat with a recognition state of use by a plurality of sensors, characterized in that it waits for the user's recognition of the use of the mat.
According to claim 5,
The microcontroller U1 is connected to the two-digit segment FND to configure a circuit to display the temperature as a number, and the number appearing on the FND displays the temperature setting value according to the button operation when the button is operated, and the mat when there is no button operation. An automatic safety device for controlling the temperature of a heating mat with a recognition state of use by a plurality of sensors, characterized in that to display the heating temperature detected by the temperature sensor of the.
According to claim 5,
The microcontroller U1 is connected to two two-digit segments FND to display a temperature setting value according to button operation and a heating temperature value detected by a temperature sensor of a heating mat, respectively, using a plurality of sensors, characterized in that Cognitive heating mat temperature control automatic safety device.
The method of claim 7, wherein the microcontroller,
In the state of switching to the safe mode, if any one of the buttons is operated, a program routine is configured to return to the previous mode of temperature control before the safe mode. Temperature control automatic safety device.
[Claim 3] The method of claim 2 or 3, wherein the vibration sensor (SR1) has leads on both sides of the vibration sensor (SR1) that are straight or spring-tensioned and mounted on a circuit board (PCB). Mat temperature control automatic safety device.

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