JPH08233297A - Electric carpet - Google Patents

Abstract

PURPOSE: To carry out energy saving operation and eliminate an operation trouble by changing a setting temperature over to a setting temperature at a low scale in automatic mode in the case when a pressure sensor fails to detect the warming up temperature within a definite time since the energization is started or suspending the energization of a heater in automatic mode. CONSTITUTION: A power source switch is turned on and a switch on starting time is set by means of a timer installed to a controller 3. When it is time to start the energization, a heater main body 1 is energized for a definite time at a setting time by a temperature control means installed to the controller 3. In the case when a pressure sensor 2 fails to detect the warming up temperature within this definite time, the temperature is controlled based on a setting temperature at a low scale irrespective of the setting temperature by the temperature control means. Whether or not people adopts heating is constantly confirmed with a signal transmitted from the pressure sensor 2. In the case when the heat is not detected for a definite time, the energization is suspended in automatic mode. This construction makes it possible to carry out power saving operation and eliminate the need for manual operation and hence eliminate an operational trouble.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric carpet used for heating at home.

[0002]

2. Description of the Related Art A conventional electric carpet includes a heater wire, a temperature detecting wire for detecting the temperature of the heater wire, a temperature setting means for setting a voltage corresponding to a control temperature of the heater wire, and a temperature control switch. A generally known structure is one that has a timer that counts a certain time when it is turned on, and the function of the timer can automatically start energization at a desired time. Was operated at the set temperature on the temperature control scale when setting the timer function.

(For example, JP-A-2-270281, JP-A-60-138338, and JP-A-64-21
(See Japanese Patent No. 885 and Japanese Patent Laid-Open No. 63-273740)

[0004]

A heater wire, a temperature detecting wire for detecting the temperature of the heater wire, a temperature setting means for setting a voltage corresponding to a control temperature of the heater wire, and a temperature control switch being turned on. A conventional electric carpet equipped with a timer for counting a certain time automatically starts energization at a preset time when the timer energizes, but changes a preset temperature or stops energization. However, there is a problem that the operation is troublesome because it requires an artificial operation.

[0005]

In order to solve the above problems, a heater body composed of a heater wire and a temperature sensor arranged along the heater wire, a pressure sensor for detecting the presence or absence of a person, and this pressure sensor. In the electric carpet consisting of a controller equipped with a temperature control circuit for controlling the temperature of the heater body based on the signal from the controller and a timer for operating the heater body at a desired time, the temperature sensor is connected to the pressure sensor from the start of energization. If the temperature is not detected within a certain period of time, it is equipped with a function to automatically switch the set temperature to the set temperature on the low scale.

Further, the temperature control circuit is provided with a function of automatically stopping the energization of the heater main body when the pressure sensor does not detect warming after a lapse of a certain time.

[0007]

BEST MODE FOR CARRYING OUT THE INVENTION By providing a timer, a pressure sensor for detecting the presence or absence of a person, and a temperature control circuit interlocking with the timer, the time from the start of energization by the function of the timer is measured, and the pressure sensor starts energization. If the heating is not detected within a certain time, the set temperature is automatically switched to the energization at the set temperature on the low scale.

Further, when the pressure sensor does not detect the warming after a certain period of time, the heater body is automatically de-energized.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An electric carpet according to an embodiment of the present invention will be described with reference to the drawing.

FIG. 1 is a perspective view of an electric carpet showing the structure of an embodiment of the present invention.

Reference numeral 1 denotes a heater main body, and a pressure sensor 2 for detecting whether or not the heater main body 1 is heated between a meandering heater wire 6 and a temperature sensor 7 such as a signal line. Is provided.

Reference numeral 3 denotes a controller, and the controller 3 detects a signal from a temperature sensor 7 such as a signal line and controls the energization of the heater body 1 according to a set temperature, and a desired temperature control circuit 8. The timer 4 that starts energization at the time of, the function of measuring the time from the start of energization by the timer 4, the function of automatically switching the set temperature to the set temperature at the low scale, and the function of forcibly stopping the energization It consists of

It should be noted that means for starting energization at a desired time, pressure sensor 2 for detecting whether or not the heater body 1 is heating, and temperature adjusting means 5 for determining the control temperature of the heater body 1. And a means for measuring the time from the start of energization by the function of the timer 4, a temperature control circuit 8 for switching the control temperature to a control temperature on a low scale, and for stopping the energization.

Next, the operation of the above configuration will be described.

First, a power switch (not shown) is turned on.
Then, the energization start time is set by the function of the timer 4 provided in the controller 3.

At the time when the energization starts, the heater wire 6 arranged in a meandering shape on the heater body 1 and the temperature sensor 7 such as a signal wire are energized at a temperature set by the temperature adjusting means 5 for a predetermined time.

When a person starts collecting heat within this time, the pressure sensor 2 provided in the heater body 1 detects the collecting heat, and the function of measuring the time from the start of energization is stopped and normal control is performed.

On the other hand, when the pressure sensor 2 does not detect heating, the function of automatically changing the set temperature to the set temperature in the low scale is received by the function of measuring the time, regardless of the set temperature in the temperature adjusting means 5. Control is performed at the set temperature on the low scale.

In this case, the measurement of the energization time is continued, and after a lapse of a certain time, if the heating is not detected, the energization of the heater body 1 is forcibly stopped.

Whether or not a person is warming up is always confirmed by a signal sent from the pressure sensor 2, and when it is detected that the person is not warming up for a certain period of time, the power supply is automatically stopped.

When the heating is detected again, the power supply to the heater body 1 is restarted at the set temperature in the temperature adjusting means 5.

[0022]

As described above, according to the present invention, the timer, the pressure sensor for detecting the presence or absence of a person, and the temperature control circuit interlocking with the timer are provided. If the time to start is long, perform energy saving operation at the set temperature on the low scale,
Even if you forget to energize with the timer function, it automatically stops so that you can change the preset temperature or you do not need manual operation to stop energizing, so that operation is not troublesome etc. We were able to provide a useful electric carpet.

[Brief description of drawings]

FIG. 1 is a perspective view of an electric carpet showing an embodiment of the present invention.

FIG. 2 is a diagram of an electric carpet showing an embodiment of the present invention.
It is a principal part figure of the P section shown in FIG.

FIG. 3 is a flow chart of an electric carpet showing an embodiment of the present invention.

[Explanation of symbols]

 1 Heater Part 2 Pressure Sensor 3 Controller 4 Timer 5 Temperature Adjusting Means 6 Heater Wire 7 Temperature Sensor 8 Temperature Control Circuit

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Takunobu Nakazawa 1-3 Shinjuyoji, Kashiwa-shi, Chiba 1

Claims (2)

[Claims] 1. A heater main body (1) comprising a heater wire (6) and a temperature sensor (7) arranged along the heater wire (6), and a pressure sensor (2) for detecting the presence or absence of a person. The heater body based on the signal from this pressure sensor (2)
An electric carpet comprising a temperature control circuit (8) for controlling the temperature of (1) and a controller (3) equipped with a timer (4) for operating the heater body (1) at a desired time. An electric carpet characterized in that the circuit (8) has a function of automatically switching the set temperature to a set temperature at a low scale when the pressure sensor (2) does not detect heating within a fixed time after the start of energization. 2. A pressure sensor for the temperature control circuit (8)
The electric carpet according to claim 1, further comprising a function of automatically stopping energization of the heater main body (1) when (2) does not detect heating after a certain period of time.