KR20230101038A - Electric mat using human body sensor - Google Patents

Abstract

It is related to an electric mat using a human body detection sensor that can automatically control the operation of the electric mat according to human body detection to promote accuracy in electric mat control, pursue safety by automatically turning off the power when going out, and prevent low-temperature burns. , A mattress with a built-in heating wire, a human body detection sensor installed at an arbitrary position on the mattress to detect a human body, and automatically controlling the driving of the heating wire according to the human body detection signal by the human body detection sensor, and when the large current switching element of the power supply unit is shorted It includes a temperature controller that automatically cuts off power supply to prevent fire, and the temperature controller heats the heating wire for a set first operating time when a human body is detected by the human body sensor, and the electric mat using the human body sensor implement

Description

Electric mat using human body sensor}

The present invention relates to an electric mat using a human body detection sensor, and in particular, automatically controls the operation of the electric mat according to human body detection to promote accuracy in electric mat control and pursues safety by automatically turning off the power when going out, It relates to an electric mat using a human body sensor capable of preventing low-temperature burns.

In general, electric mats have heating wires that dissipate heat by supplying power to the inside of a mat having a predetermined size to suit the purpose of use are buried at regular intervals, and when the user applies power through a power supply device, The heating wire buried in the mat is heated by the supplied power to warm the mat, so that the user can take a rest or sleep in a warm state.

However, when the user is not using the electric mat while the power is on, the power must be turned off so that power is not supplied to prevent waste of power and to prevent the risk of fire due to overheating in advance. do. If the user leaves the seat for a certain period of time while the power is on and does not use the electric mat, as the power is continuously applied, it causes waste of power more than necessary, and sometimes causes safety accidents such as fire due to overheating. There is a risk. Therefore, the power regulator is equipped with a power cut-off device that automatically cuts off power after a set time has elapsed, so that the power is cut off automatically when the set time is reached regardless of whether a person is using the mat or there is no person. If not, it reduces the waste of power and prevents the risk of safety accidents such as fire due to overheating.

However, this automatic control method has troubles such as the power being automatically cut off when a set time has elapsed during use and the power has to be turned on again.

Therefore, the need for an electric mat without the inconvenience of a user manipulating the power of the electric mat has emerged, and Korean Utility Model Registration No. 20-0489721 proposed as <Patent Document 1> was developed in response to this need.

<Patent Document 1> is equipped with a vibration sensor, and automatically turns on or off the power of the electric mat according to the detected vibration.

However, since this prior art uses a vibration sensor, an error in not detecting a small vibration occurred, and there was an error in operating even if an object or object fell on the mat. In particular, there was a problem of malfunctioning even when a pet such as a dog or cat passed over the mat.

Republic of Korea Utility Model Registration 20-0489721 (registered on July 22, 2019) (electric mat using vibration sensor)

Therefore, the present invention has been proposed to solve the inconveniences that occur when using a general electric mat as described above and various problems that occur in the prior art, and automatically controls the operation of the electric mat according to human body detection to improve accuracy in controlling the electric mat At the same time, the purpose is to provide an electric mat using a human body detection sensor that is automatically turned off when going out to pursue safety.

Another object of the present invention is to provide an electric mat using a human body sensor capable of preventing low-temperature burns.

In order to achieve the above object, the "electric mat using a human body sensor" according to the present invention,

Mattresses with built-in heating wires;

a human body detection sensor mounted at an arbitrary position on the mattress to detect a human body; and

A temperature controller that automatically controls the driving of the heating wire according to a human body detection signal from the human body sensor and prevents fire by automatically cutting off power supply when a large current switching element of a power supply unit is short-circuited,

The temperature controller is characterized in that when the human body is detected by the human body sensor, the heating wire is heated for a preset time.

In the above, the temperature controller,

A control unit including a temperature control button for a user to select a temperature level and a power button for on/off operation;

a timer providing time information;

a control unit for automatically setting temperature, regulating the temperature, and controlling driving of the heating wire according to the temperature level set by the manipulation unit and the human body detection signal output through the human body sensor; and

and a heating wire driving unit for driving the heating wire built into the mattress according to the heating wire driving control signal generated by the control unit.

In the above, the temperature controller,

and a power supply unit that detects overcurrent of supplied power or overcurrent due to a short circuit of a high-current switching element of the power supply unit, and automatically cuts off power supplied to the hot wire driver to prevent fire when overcurrent is detected.

In the above, the control unit,

an operation signal receiving module for receiving an operation signal generated by the operation unit;

a human body detection signal receiving module for receiving a human body detection signal generated by the body detection sensor;

a temperature setting module for setting a temperature according to the temperature level received by the operation signal receiving module;

and a heating wire control module that controls driving of the heating wire according to the operation signal of the operation signal receiving module, the human body detection signal of the human body detection signal receiving module, and the set temperature level of the temperature setting module.

In the above, the control unit,

If the temperature level set in the temperature setting module belongs to the 6th to 9th levels among the 9 preset levels, the temperature setting is automatically changed when the preset time elapses from the time of driving the heating wire to prevent low-temperature burns. It is characterized by including a module.

According to the present invention, the operation of the electric mat is automatically turned on/off according to human body detection to achieve accuracy in controlling the electric mat, and at the same time, the power is automatically turned off when going out to promote safety.

In addition, by automatically cutting off the driving power of the electric mat when going out, there is an effect that can prevent unnecessary power waste.

In addition, according to the present invention, if the temperature level set by the user is a high level, the temperature level is automatically adjusted to a low temperature level after a predetermined time, thereby preventing low-temperature burns.

In addition, according to the present invention, when an overcurrent occurs due to a short circuit of the thyristor (SCR), which is a high current switching element in the power supply unit, the supply power is automatically cut off, thereby preventing a fire.

1 is a schematic configuration diagram of an electric mat using a human body sensor to which the present invention is applied;
2 is a block configuration diagram showing an embodiment of the temperature controller of FIG. 1;
3 is a block diagram showing an embodiment of the control unit of FIG. 2 .

Hereinafter, an electric mat using a human body sensor according to a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

The terms or words used in the present invention described below should not be construed as being limited to a conventional or dictionary meaning, and the inventor may appropriately define the concept of the term in order to explain his/her invention in the best way. It should be interpreted as a meaning and concept consistent with the technical spirit of the present invention based on the principle that it can be.

Therefore, the embodiments described in this specification and the configurations shown in the drawings are only preferred embodiments of the present invention, and do not represent all of the technical spirit of the present invention, so various equivalents and equivalents that can replace them at the time of the present application It should be understood that variations may exist.

1 is a schematic configuration diagram of an electric mat using a human body sensor according to a preferred embodiment of the present invention, installed at an arbitrary position of a mattress 400, a heating wire 200 embedded in the mattress 400, and the mattress 400 In a state where the human body sensor 300 and the heating wire 200 are connected, the driving and temperature control functions of the heating wire 200 are performed, and the human body sensor 300 installed in the center of the mattress 400 detects the human body. It includes a temperature controller 100 for controlling the driving and temperature control of the heating wire 200 during the operating time set by the user according to.

The mattress 400 has a cushion that is large enough for a person to sit or lie on, and any mattress that has cushioning power inside so that a person can sit or lie down comfortably.

The heating wire 200 serves to generate heat by generating heat when current flows.

The human body sensor 300 serves to sense the human body by detecting the moisture of the human body, and may use an Arduino Water Sensing Sensor, which is well known for detecting human body moisture.

In the present invention, the human body sensor 300 is shown as being installed in the central part of the mattress 400, but the present invention is not limited thereto, and a plurality of human body sensors are installed at arbitrary positions of the mattress 400 in order to promote the accuracy of human body detection. can be installed with

The temperature controller 100 automatically controls the driving of the heating wire 200 according to the human body detection signal from the human body sensor 300, and when the high current switching element (eg, SCR) of the power supply unit is shorted, automatically It serves to prevent fire by cutting off the supply power.

When the human body is detected by the human body sensor 300, the temperature controller 100 may heat the heating wire 200 for a preset time.

2 is a block configuration diagram showing an embodiment of the temperature controller 100, including a control unit 110, a timer 120, a control unit 130, a hot wire driving unit 140, a power supply unit 150, and a memory 160. can include

The control unit 110 is provided with a plurality of control buttons so that the user can select a temperature level or turn on/off the power of the electric mat. For example, a temperature control button for selecting a temperature level and a power button for on/off operation may be included. The temperature control button may be provided to select a temperature level of 1 to 9 levels. It is composed of a variable volume, so that the user can conveniently select the temperature level.

The timer 120 serves to provide time information to the controller 130 .

The controller 130 automatically sets the temperature, adjusts the temperature, and controls the driving of the heating wire according to the temperature level set by the manipulation unit 110 and the human body detection signal output through the human body sensor 300. The control unit 130 may be implemented with various control devices such as a controller, a microcontroller, a microcontroller, and a central processing unit.

As shown in FIG. 3, the control unit 130 includes the operation signal receiving module 131 for receiving the operation signal generated from the operation unit 110 and the human body for receiving the human body detection signal generated from the body sensor 300. The sensing signal receiving module 132, the temperature setting module 133 for setting the temperature according to the temperature level received by the manipulation signal receiving module 131, the manipulation signal of the manipulation signal receiving module 131 and the human body detection and a heating wire control module 134 that controls driving of the heating wire 200 according to the human body detection signal of the signal receiving module 132 and the set temperature level of the temperature setting module.

In addition, the control unit 130 automatically sets the temperature when the temperature level set by the temperature setting module 133 belongs to the 6th to 9th stages among the 9 preset levels, when a preset time elapses from the time of operating the heating wire. A low-temperature burn prevention module 135 for preventing low-temperature burns may be further included.

The heating wire driving unit 140 serves to drive the heating wire 200 built into the mattress 400 according to the heating wire driving control signal generated by the control unit 130 .

The power supply unit 150 supplies power for driving the heating wire, detects overcurrent of the supply power or overcurrent due to a short circuit of the high current switching element of the power supply unit, and automatically cuts off the power supplied to the heating wire driving unit 140 when overcurrent is detected to prevent a fire. plays a role in preventing

The operation of the electric mat using the human body sensor according to the preferred embodiment of the present invention configured as described above will be described in detail.

First, the user of the electric mat operates the power button in an on state through the control unit 110 to use the electric mat. Here, only when the power button is operated in the on state, the temperature controller 100 can automatically control the operation of the electric mat to be on or off according to the human body detection and temperature. When the power button is operated in an off state, the driving of the electric mat is turned off regardless of whether or not a human body is detected.

After turning on the power of the electric mat, the user selects a temperature level by manipulating the temperature control button of the control unit 110 . Here, the temperature control button is made in the form of a variable volume, so that you can easily select a temperature level from 1st to 9th level.

When the user selects a temperature level through the control unit 110, the operation signal receiving module 131 of the control unit 130 receives the temperature level operation signal and transmits it to the temperature setting module 133 and the heating wire control module 134. .

The temperature setting module 133 sets the temperature level according to the received temperature level manipulation signal. That is, the temperature level setting is the heating wire drive control timing, step 1 is 1 second on 9 seconds off, step 2 is 2 seconds on 8 seconds off, step 3 is 3 seconds on 7 seconds off, step 4 is 4 seconds on 6 Second off, level 5 is 5 seconds on, 5 seconds off, level 6 is 2 seconds on, 4 seconds off, level 7 is 3 seconds on, 3 seconds off, level 8 is 4 seconds on, 2 seconds off, level 9 is 5 seconds on, 1 seconds is set to off.

In the state where the temperature level is set, the controller 130 checks whether the human body is detected through the human body sensor 300 .

For example, when the power button is operated in an on state, the human body sensor 300 receives operating power and performs a human body sensing operation. Human body detection uses a method of detecting moisture in the human body. By using the method of detecting the moisture of the human body, an error in detecting the human body can be prevented even when water or beverage is poured onto the electric mat, and only the human body can be accurately detected.

In particular, by using a human body sensor, in the case of an electric mat using an existing vibration sensor, vibration generated when a companion animal such as a cat or dog passes the electric mat prevents malfunction of the electric mat even in an environment where there is no user. and, additionally, waste of power can be prevented.

In other words, when the user turns on the power button of the electric mat, sets the temperature, and then sits or lies on the electric mat, the human body sensor 300 detects the human body.

When the human body is detected through moisture detection, the human body sensor 300 transmits the human body detection signal to the controller 130 of the temperature controller 100.

When the human body detection signal receiving module 132 of the control unit 130 receives the human body detection signal output from the body detection sensor 300, it transmits the received human body detection signal to the hot wire control module 134.

When the human body detection signal is transmitted, the heating wire control module 134 extracts the heating wire driving timing control signal from the memory 160 according to the temperature level set by the temperature setting module 133, and the extracted heating wire driving timing control signal. is transmitted to the heating wire driver 140 to drive the heating wire 200, and at the same time, the driving time of the heating wire 200 is checked using the time information obtained through the timer 120.

The heating wire driver 140 drives the heating wire 200 with driving power supplied through the power supply unit 150 at a driving timing corresponding to a set temperature level.

The heating wire 200 generates heat at the time when power is supplied to generate a heat source, and heat is transferred to the mattress 400 of the electric mat by the heat source thus generated so that the user can use the warm electric mat.

Here, when the heating wire control module 134 of the control unit 130 detects a human body and determines that the heating wire 200 is driven, the heating wire is driven and a first driving time (eg, 2 hours) is set. do. That is, from the time when the human body is detected, the electric mat is basically operated for 2 hours, and when the human body is detected again through the human body detection at the time when the 2 hours are close, the set 2-hour driving time is reset, and By setting the driving time, the heating wire 200 is operated. Unlike this, if a human body is not detected while operating the heating wire 200, the heating wire is automatically turned off after the initially set 2 hours.

Therefore, even if the user goes out without turning off the electric mat while using the electric mat, the power of the electric mat is automatically turned off when the initial operating time is over and the human body is not detected. Therefore, it is possible to prevent power waste due to non-use and secure safety through automatic power-off.

In this way, the present invention basically automatically controls the operation of the electric mat according to the presence or absence of human body detection, so that the inconvenience of manually manipulating the power of the electric mat by the user can be eliminated and unnecessary power consumption can be prevented.

On the other hand, as another feature of the present invention, it is possible to prevent low-temperature burns of the disabled, the elderly, children, etc. who have difficulty using an electric mat.

For example, when the temperature level set by the user is 6 to 9 stages, the low-temperature burn prevention module 135 of the control unit 130 sets the driving time of the heating wire to the second driving time (eg, 1 hour 30 minutes). And, when the driving time of the heating wire is 1 hour and 30 minutes through the timer 120, the temperature setting is automatically set to 5 steps and transmitted to the heating wire control module 134.

Therefore, when the temperature level set by the user is 6 to 9 steps, the heating wire control module 134 automatically controls the driving timing of the heating wire in 5 steps when a setting change to the 5-step level is requested from the low-temperature burn prevention module 135. By switching the timing (5 seconds on, 5 seconds off) to drive the heating wire, it is possible to automatically prevent the disabled, the elderly, and children who have difficulty using an electric mat from getting low-temperature burns.

In addition, as another feature of the present invention, electrical safety can be secured.

For example, while the power supply unit 150 supplies the heating wire driving power to the heating wire driving unit 140 using the SCR as a power supply unit, overcurrent flows in the input power supply or a short circuit in the SCR unit as the power supply unit or other electrical circuit abnormalities occurs. When an overcurrent is detected, the fuse of the power supply means is automatically cut off to automatically cut off the supply power. As a result, the power is automatically cut off to prevent overcurrent from flowing due to overcurrent flowing in the supply power or short circuit of the SCR, which is a power supply, so that fire prevention due to overcurrent can be prevented. In this way, the safety of electrical products can be secured by preventing fire through an automatic power-off function in case of overcurrent.

According to the present invention described above, the operation of the electric mat is automatically controlled according to human body detection to achieve accuracy in electric mat control, and at the same time, the power is automatically turned off when going out to pursue safety and prevent low-temperature burns. there is.

Although the invention made by the present inventors has been specifically described according to the above embodiments, the present invention is not limited to the above embodiments, and it is common knowledge in the art that various changes can be made without departing from the gist of the present invention. It is self-evident to those who have

100: thermostat
110: control panel
120: timer
130: control unit
131: operation signal receiving module
132: human body detection signal receiving module
133: temperature setting module
134: hot wire control module
135: low temperature burn prevention module
140: hot wire drive unit
150: power supply
160: memory
200: heating wire
300: human body sensor
400: mattress

Claims (5)

Mattresses with built-in heating wires;
a human body detection sensor mounted at an arbitrary position on the mattress to detect a human body; and
A temperature controller that automatically controls driving of the heating wire according to a human body detection signal from the human body sensor and prevents fire by automatically cutting off power supply when a large current switching element of a power supply unit is short-circuited,
The temperature controller is an electric mat using a human body sensor, characterized in that for heating the heating wire for a set first driving time when the human body is detected by the human body sensor.
In claim 1, the temperature controller,
A control unit including a temperature control button for a user to select a temperature level and a power button for on/off operation;
a timer providing time information;
a control unit for automatically setting temperature, regulating the temperature, and controlling driving of the heating wire according to the temperature level set by the manipulation unit and the human body detection signal output through the human body sensor; and
An electric mat using a human body sensor, characterized in that it comprises a heating wire driving unit for driving the heating wire built into the mattress according to the heating wire driving control signal generated by the control unit.
In claim 1, the temperature controller,
A human body detection sensor characterized in that it includes a power supply unit for detecting overcurrent due to overcurrent of supplied power or short circuit of a high current switching element of the power supply unit, and automatically cutting off power supplied to the hot wire driver to prevent fire when overcurrent is detected Electric mat using .
In claim 2, the control unit,
an operation signal receiving module for receiving an operation signal generated by the operation unit;
a human body detection signal receiving module for receiving a human body detection signal generated by the body detection sensor;
a temperature setting module for setting a temperature according to the temperature level received by the operation signal receiving module; and
A heating wire control module for controlling driving of the heating wire according to the operation signal of the operation signal receiving module, the human body detection signal of the human body detection signal receiving module, and the set temperature level of the temperature setting module. electric mat.
In claim 4, the control unit,
When the temperature level set in the temperature setting module belongs to the 6th to 9th stages among the 9 preset levels, the temperature setting is automatically changed to prevent low-temperature burns when the second preset driving time elapses from the heating wire driving time An electric mat using a human body sensor, characterized in that it comprises a low-temperature burn prevention module.

Images