JPS6337585A - floor heating system - Google Patents

Abstract

(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates primarily to a floor heating system in which an electric heater is built into a carpet and the heater is controlled by an electronic circuit.

Conventional technology In general, electric carpets have a cord-shaped heater built into the main body, and a temperature sensor built into the main body similarly detects the internal temperature of the electric carpet, which matches the set temperature. It is controlled as follows.

Traditionally, needle punch felt, which has a relatively low heat capacity, has been used as the surface material for the main body of the floor heating system, but in recent years, the use of tufted carpet materials, which have a high heat capacity, has become mainstream to give a sense of luxury. There are also types that are used with a high-class cover, and in order to improve the deteriorated start-up performance, complex control is required, so electric carpets that are controlled by microcomputers (hereinafter referred to as microcomputers) have appeared. .

Generally, non-latch type bush switches (hereinafter referred to as tact switches) are often used in microcomputer-controlled devices to improve operability. Although tactile switches are easy to operate, there is also a high possibility that they may be operated inadvertently. In the case of electric carpets, it is common to place the operation and display sections on the top of the controller for ease of use; however, when placed on the electric carpet floor and used, it can be accidentally stepped on by foot etc. They are more likely than other devices to cause problems due to activation or temperature settings changes.

For this reason, in order to prevent equipment from operating due to careless operation of the tact switch, it is common practice to ignore double presses [7] of the tact switch, but this does not take into account the case where the tact switch is pressed at a slightly different timing. Not yet. However, in reality, it is rather rare for the tact switches to be pressed at exactly the same time, and even if the sampling frequency of the tact switches is slow enough to the extent that it does not cause any problems in use, the tact switches that were pressed earlier may be accepted and activated inadvertently. It is possible that it will start to occur.

Problems to be Solved by the Invention As described above, with conventional electric carpets, if two or more tact switches are inadvertently shifted slightly due to, for example, an object falling on the controller or a cat walking, etc. Even if they are pressed, it is not considered a double press because they are not pressed at the same time, and even though the second tact switch can be ignored, the reception operation for the first tact switch is performed, and as a result, There were problems such as the temperature setting changing and the timer working.

The present invention has been made in view of this point, and is applicable not only when two or more tact switches are pressed at exactly the same time.
To provide an easy-to-use floor heating device that does not operate inadvertently even when pressed at a slightly different timing.

Means for Solving the Problems In order to solve the above-mentioned problems, the present invention provides two storage sections for storing the control state, and only when a signal is input from one of the switches, the control state is stored in the first storage section. The control state is stored in the second storage unit and then changed. If a signal is input from two or more switches at the same time, all the input signals are ignored, and if a signal is input from any one switch, the control state is changed. If the second switch signal is duplicated after changing the control state stored in the first storage unit, the control state in the second storage unit is returned to the first storage unit and the control state is changed. This is to perform recovery processing.

Function: With the above configuration, the floor heating device of the present invention temporarily saves the control state stored in the first storage unit in the second storage unit when a signal is received from any one of the tact switches. If you change the contents of the first memory section from
When a signal is received from the pawl tact switch, the saved contents of the second storage section are returned to the first storage section and the first
By canceling the operation of the pawl tact switch in response to the signal, the control state will not be changed inadvertently, not only when two or more signals are input at the same time, but also when they are input at slightly different timings. be.

Example Hereinafter, one embodiment of the present invention will be described with reference to the drawings.

FIG. 1 is a block diagram of an embodiment of the present invention, in which numeral 1 represents a heater built into the main body of the electric carpet, and numeral 2 represents a drive section for driving the heater 1. In FIG. In order to switch the energized area, the heater 11. There are two drive units 2 in each case. 3 is a temperature sensor built into the main body, and the impedance change of this temperature sensor 3 is converted into an electrical signal by a temperature detection section 4. Reference numeral 5 denotes a first storage unit that stores control states such as turning on and off the power of the main body, switching the energized area, and setting the temperature.

The display driving section 6 drives the display section 7, and the display section 7 displays each current control state stored in the first storage section 5. Further, based on the control state stored in the first storage section 5, the control section 8 controls energization of the heater 1 via the drive section 2.

Reference numeral 9 denotes an operation section for arbitrarily changing the control state stored in the first storage section 5, which is composed of a switch section 1o and a switch processing section 11.

Reference numeral 12 indicates that the control state stored in the first storage unit 5 is the control state stored in the operation unit 9.
This is a second storage section that stores the control state that was stored in the first storage section 5 before the change. In this embodiment, the control unit 8. First storage unit 5. Second storage unit 1
2. The switch processing section 11 is composed of a microcomputer (not shown).

As shown in FIG. 2, the switch unit 10 includes a power switch 1
31 Current carrying area switching switch (hereinafter abbreviated as surface cutting switch) 14. It is composed of four tact switches: a temperature adjustment up switch (hereinafter abbreviated as a temperature adjustment up switch) 16 degrees and a temperature adjustment down switch (hereinafter referred to as a temperature adjustment down switch) 16 degrees.

Figure 3 is a cross-sectional view of the tact switch section, where 17 is the tact switch, 18 is the printed circuit board on which the tact switch is attached, 19 is the operation button, 2° is the case of the electric carpet controller body, and 21 is the name plate. be. As you can see from the diagram, the tact switch 17 is actually
By pressing the operation button 19 part of the name plate 21 instead of directly pressing the operation button 19, the operation button 19 is pressed and the tact switch 1 is pressed.

FIG. 4a NC is a flowchart showing an outline of the program of the switch processing section 11 of the microcomputer.

The switch reception operation of the switch processing section of the electric carpet configured as described above will be explained using the flowcharts of FIGS. 4a to 4C.

In the switch processing section 11, when the switch data is input in step 22, the power switch 13, the face-off switch 14, and the power switch 14 of the switch section 1o are input. Import the data of temperature control up switch 15° and temperature control down switch 16. In step 23, the state of the previous switch is compared with the captured data, and if they match, it is determined that the state of the switch has not changed, and the process returns to step 22.

If they do not match, the state of the switch has changed, so in steps 24 to 28 the values of the captured data are checked to determine whether one switch was pressed, no switch was pressed, or two or more switches were pressed. It is determined whether they are pressed at the same time and the process moves on to each process.

If no switch is pressed, the process moves to switch data confirmation processing 29. In step 3o, the contents of the first storage unit 5 are copied to the second storage unit 12, and in step 31, the switch flag (hereinafter referred to as SW flag) is set to Q. The SW flag is set to 1 when any switch is pressed, and set to 0 when no switch is pressed. When step 31 is completed, the process returns to switch data input 22.

If the switch data is 1 in step 25, it is determined that only the power switch is pressed, and the power switch processing 32
Move to.

Set the SW flag to 1 in step 33, and
4, the storage contents of the first storage section 5 are copied to the second storage section 12. After that, in steps 35 to 37, turn on the power,
Performs OFF processing and returns to switch data input 22.

If the switch data is 2 in step 26, it is determined that only the face-off switch is pressed, and the face-off switch processing 38
Move to.

In step 39, it is checked whether the power is on, and
If F, the process ends without performing the following process. When the power is on, the SW flag is set to 1 in step 40, and the storage contents of the first storage unit 5 are copied to the second storage unit 12 in step 41. Thereafter, in steps 42 to 46, processing is performed in the case where the energized area is large on one side, B on one side, B on both sides, and then returns to the switch data manual 22.

If the switch data is 3 at the end of step 2, it is determined that only the temperature control up switch is pressed, and the process moves to temperature control up switch processing 47.

In step 48, check whether the power is on and turn it off.
If so, the process ends without performing the following processing. In step 49, it is determined whether the temperature setting is at a high level, and if the temperature setting is at a high level, it is determined that the temperature cannot be increased any further and the process ends. If the temperature setting is not at the strong level, the temperature setting level is increased by one in steps 6o to 52.

If the switch data is 4 in step 28, it is determined that only the temperature control down switch is pressed, and the process moves to temperature control down switch processing 63.

The temperature control down switch process is the same as the temperature control up switch process. In step 65, it is determined whether the temperature setting is at a low level, and if the temperature setting is at a low level, it is determined that the temperature cannot be lowered any further and the process is terminated. If the temperature setting is not at the weak level, the temperature setting level is lowered by one level in steps 66-58.

If it is determined in steps 24 to 28 that two or more switches are pressed, the process moves to multiple press processing 59.

In the multiple press processing, it is determined in step 6o whether the SW flag is 0 or 1. Here, when the SW flag is 1, it means that two or more tact switches are pressed at slightly different timings, and since the process for the first tact switch has already been performed, the following cancel process is performed. That is, in step 61, the stored contents of the second storage section 12 are copied to the first storage section 6, and the control state is returned to the state before the tact switch was pressed.

When the SW flag is 0 in step eo, it means that two or more tact switches are pressed at the same time, and in this case, since it is assumed that no switch is turned on, no process is performed to turn on the switch.

Note that this embodiment does not specifically specify the timing at which the tact switches are pressed when two or more tact switches are pressed slightly apart from each other, but for example, within a certain period of time after the first tact switch is pressed. The cancellation process may be performed only when the second tact switch is pressed.

Furthermore, the target switch is also tough in this example.

Although this is a tact switch, this is not limited to a tact switch either. For example, there is also a method of realizing a combination of a tact switch and a slide switch.

More than the effects of the invention, as is clear from the examples, the floor heating apparatus of the present invention does not change the control state of the main body of the floor heating apparatus even if the switch is pressed inadvertently.

Therefore, it is highly effective in improving usability and safety.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of a floor heating system according to an embodiment of the present invention, FIG. 2 is a front view of a carpet controller according to the same embodiment, and FIG. 3 is a tact switch section in a carpet controller according to the same embodiment. The cross-sectional view of FIG. 4 and FIG. 5...First storage unit, 1o...Switch unit, 11...Switch processing unit, 12...
Second storage section. Name of agent: Patent attorney Toshio Nakao and 1 other person 2nd
Figure 4Figure 4

Claims (1)

[Claims] A floor heating device main body, a plurality of heaters built into the floor heating device main body, a drive unit that drives the heaters, a temperature sensor built into the floor heating device main body, and an electrical system that detects impedance changes of the temperature sensors. a temperature detection unit that converts into a signal; a first storage unit that stores the control state of the floor heating apparatus main body; a display unit that displays the control state; and a temperature detection unit that converts the control state into a signal; a display drive section that drives a display section; a control section that controls energization of the heater via the drive section based on a control state stored in the first storage section; and a control section that is stored in the first storage section. an operating section for arbitrarily changing a control state stored in the first storage section; and a control state stored in the first storage section before being changed when the control state stored in the first storage section is changed by the operating section. a second storage section that stores the information, and the operation section that stores the first
a switch section consisting of a plurality of switches corresponding to the control state items stored in the storage section; and only when a signal is input from any one switch of the switch section, the first
If a signal is input from two or more switches of the switch unit at the same time, all input signals are ignored, and none of the switch units Or, if a signal from one switch enters and changes the control status item stored in the first storage section, and then a signal from a second switch comes in redundantly, the signal from the second storage section changes. A floor heating device comprising a switch processing unit that returns a control state to a first storage unit and performs a control state restoration process.