JP2007032972A - Floor heating control method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a floor heating control method capable of preventing precisely and surely a person from being scalded at a low temperature, over a wide range of a floor heating portion, and capable of maintaining a comfortable heating environment all the time. <P>SOLUTION: In this floor heating control method of dividing the one floor heating portion 10 into a plurality of floor heating areas 12, 13 to constitute a floor heating system by laying heater units 16, 17 in the respective floor heating areas 12, 13, and of controlling electrification quantities to the respective heater units 16, 17 to heat the floor heating portion 10 up to a set control target temperature, a noncontact type person detecting sensors 30, 32 are arranged in upper sides of the heater units 16, 17 within the floor heating areas 12, 13, and the control is executed to reduce the electrification quantity to the heater unit 16 within the floor heating area 12 where the risk of scalding the person at the low temperature is judged, and to increase, in response to the reduction therein, the electrification quantity to the heater unit 17 within the floor heating area 13 where no risk of scalding the person at the low temperature is judged, based on person detection information from the sensor. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a floor heating control method using a heater unit having a heater (resistance heating filament).

  In a conventional floor heating system, when a floor heating part such as a room or a room is divided into a plurality of floor heating areas and a heater unit having a heater (resistance heating filament) is laid in the floor heating area, The temperature detected by the temperature detection means of the bed temperature sensor provided in each heater unit and the control target temperature set by the temperature setting means are compared by the temperature control means (temperature controller), and each heater unit is energized. A floor heating control method for controlling the amount and heating the floor heating location to a set control target temperature is used (see Patent Document 1).

  Further, the heater of each heater unit is connected to an overheat prevention device made of, for example, a thermostat or a thermal fuse, and detects a person in each heater unit, for example, a contact made of a pressure sensor using a strain gauge. If there is a risk of low-temperature burns due to a person sitting on the heater unit for a certain period of time, etc., energization of the heater (current supply based on the human detection information from the human detection sensor) ) Has been proposed (see Patent Document 2).

Japanese Utility Model Publication No. 62-154322 JP-A-5-141676

  However, in the former (refer to Patent Document 1) floor heating control method, a person is on a heater unit having a floor temperature of 40 ° C. to 60 ° C. laid in a plurality of floor heating zones for a certain time, for example, 3 hours. If you sit down, there is a risk of causing so-called low-temperature burns, which hinders the spread of floor heating control methods to facilities such as people with disabilities.

  Moreover, according to the latter (refer patent document 2) floor heating control method, since each heater unit is provided with a human detection sensor including a pressure sensor, a person sits on the heater unit for a predetermined time or more. Such a state is detected by a human detection sensor. Therefore, the overheat prevention device operates based on the person detection information and the energization to the heater is stopped, so that it is possible to prevent a person from getting a low temperature burn.

  However, in the floor heating control method using a human detection sensor composed of a pressure sensor, even if there is no possibility of causing low-temperature burns in a state where a person can move on the heater unit or is repeatedly moving a little, There is a problem that the heater unit is turned off by outputting a detection signal indicating that there is a risk of low-temperature burns, which impairs a comfortable heating environment.

  In addition, since it is necessary to provide a large number of pressure sensors in the heater unit, there is a problem that the cost of the heater unit is increased, and it takes time to provide the human detection sensor, and the construction of the floor heating system becomes troublesome.

  Furthermore, in order to prevent low temperature burns, if the heater unit is de-energized based on the human detection information from the human detection sensor, the temperature of the entire floor heating location will be lower than the control target temperature, and the original control It takes time to return to the target temperature. For this reason, when it is going to maintain the comfort of a room only with a floor heating system, there exists a problem that it is not easy to always maintain a comfortable heating environment over a wide range of floor heating places.

  The present invention solves the above-described problems, can accurately and reliably prevent humans from causing low-temperature burns over a wide range of floor heating locations, and the construction of the floor heating system is simple, An object of the present invention is to provide a floor heating control method capable of constantly maintaining a comfortable heating environment over a wide range.

  In order to achieve the above object, according to a first aspect of the present invention, a floor heating system is provided by dividing one floor heating area into a plurality of floor heating areas and laying a heater unit in each floor heating area. In the floor heating control method configured to control the energization amount to each heater unit and warm the floor heating location to the set control target temperature, non-contact type human detection above the heater unit in the floor heating area A sensor is installed, and based on the human detection information from the human detection sensor, the energization amount of the heater unit in the floor heating area that is determined to cause a low-temperature burn is reduced. Control is performed so as to increase the energization amount of the heater unit in the floor heating area that is determined not to cause burns.

  The floor heating control method according to claim 2 of the present invention is the floor heating control method according to claim 1, wherein the heater unit is normally energized while sequentially switching the energization of the heater unit every set time. Based on the human detection information, reduce the energization time of the heater unit in the floor heating area that is judged to cause low temperature burns, and determine that there is no risk of low temperature burns according to the decrease rate of the energization time It controls to increase the energization time to the heater unit in the floor heating area.

  The floor heating control method according to claim 3 of the present invention is the floor heating control method according to claim 1 or 2, wherein the person does not move for a predetermined time or less based on the person detection information from the person detection sensor. Decrease the energization amount of the heater unit in the floor heating area that is judged to cause burns, shift the control target temperature to a lower level, and determine that there is no risk of human low-temperature burns according to the decrease in the energization amount In addition, the energization amount of the heater unit in the floor heating area is increased, and the control target temperature is shifted to a higher level for control.

  According to the floor heating control method of the first aspect of the present invention, since the non-contact type human detection sensor is arranged above the heater unit in the floor heating area, a plurality of human detection sensors can be used. It is possible to detect the presence and movement of a person over a wide area of the floor heating area, that is, the floor heating area divided into floor heating areas, and accurately and reliably prevent people from causing low-temperature burns. Can do.

  In addition, since the number of people detection sensors to be deployed decreases, the cost of the heater unit can be suppressed, and the number of people detection sensors can be reduced, making it easier to install the floor heating system and reducing the construction costs. Can do.

  Also, based on the human detection information from the human detection sensor, the floor heating area where it is determined that there is no risk of low temperature burns for the heater unit in the floor heating area where it is determined that there is a risk of low temperature burns. Since the amount of electricity supplied to each heater unit is controlled so that the amount of electricity supplied to the heater unit in the floor heating area is increased according to the decrease in the amount of electricity supplied. A comfortable heating environment can be constantly maintained over a wide area of the place, that is, the floor heating area.

  Furthermore, when there is no more person, this can be detected by a human detection sensor, and the amount of power applied to the heater unit can be reduced, so that useless energy can be saved.

  According to the floor heating control method according to claim 2 of the present invention, since the energization to each heater unit is performed while switching sequentially instead of simultaneously, when controlling the energization amount to each heater unit, the control is performed by interfering with each other. Stable control can be performed without causing operational delay or disturbance. Moreover, since the control of the energization amount to the heater is performed by changing the energization time, not the energization current, simple and highly accurate control can be performed.

  According to the floor heating control method according to claim 3 of the present invention, when the amount of electricity supplied to each heater unit is controlled to warm the floor heating location to the set control target temperature, the amount of electricity supplied to each heater unit is reduced. Or, by controlling the floor heating temperature control target temperature in the floor heating area to be lower or higher according to the increase, the floor heating location, that is, the temperature of the plurality of floor heating areas can be quickly set to the set control target temperature. Can be warmed.

  Next, the best mode for carrying out the present invention will be described in detail with reference to the drawings. FIG. 1 is a schematic diagram showing a first embodiment of a floor heating control method according to the present invention, FIG. 2 is a diagram showing a switching state of energization to two heater units 12 and 13, and (a) is a normal state. The figure which shows the switching state of electricity supply, (b) is a figure which shows the switching state of electricity supply when a person exists in the heater unit 13 side continuously.

  In the floor heating system used for the floor heating control method of the first embodiment, as shown in FIG. 1, the floor heating place 10 such as one room or room is divided into two floor heating areas 12 and 13, Electric carpets, electric floor mats, electric blankets, floor heating panels, meandering heaters, tapes, strings, etc. each having heaters (planar heating elements such as resistance heating wires, strips, sheets, etc.) in each floor heating area 12, 13 Heater units 16 and 17 such as those formed in the shape of an interdigital binder, heaters laid on a flooring material, and covered with a protective sheet or strip material are configured. In addition, the heater units 16 and 17 laid in the floor heating zones 12 and 13 include a combination of a plurality of small heater units.

  In addition, the floor heating sections 12 and 13 are provided with a floor temperature sensor 20 as temperature detecting means. The floor temperature sensor 20 is provided in each heater unit 16 and 17 in the illustrated example, but may be provided on the front surface or the back surface of the underfloor material.

  One terminal of each heater unit 16, 17 has two control switches (temperature controller) 22 for heating the floor heating location 10, that is, the floor heating zones 12, 13 to a set control target temperature ( Control relay contacts 24 are connected to each other by a power line 26, and the other terminals of the heater units 16 and 17 are connected to the temperature control means 22 side by a common power line 28.

  Although not shown, the temperature control means 22 is a control target set by the floor temperature or room temperature and the temperature setting means in the floor heating sections 12 and 13 detected by the floor temperature sensor 20 or the room temperature sensor which is a temperature detection means. Comparison circuit for comparing temperature, energization time switching circuit for switching energization time to each heater unit 16, 17 every set time, floor heating area 12 according to decrease or increase in energization amount to each heater unit 16, 17 Based on the human detection information from the control target temperature shift circuit and human detection sensors 30 and 32 (described later) that shift the control target temperature of the floor temperature to 13 or lower, it is determined that there is a risk of humans getting low-temperature burns The energization time to the heater unit 16 or the heater unit 17 in the floor heating zones 12 and 13 is reduced by a predetermined rate from the set time, and the number of people decreases according to the decrease rate of the energization time. By energizing the heater unit 17 or the heater unit 16 in the floor heating sections 13 and 12 determined not to cause burns, the energization amount to each heater unit 16 and 17 is controlled by increasing the energization time from the set time. It is comprised with the electricity supply control circuit provided with CPU which performs.

  Further, above the heater units 16 and 17 laid in the floor heating areas 12 and 13, not only the presence / absence of a person but also a person's movement can be detected. Type human detection sensors 30, 32 are provided. In the illustrated example, the human detection sensors 30 and 32 are arranged on the ceiling of the floor heating areas 12 and 13, but the walls above the floor heating areas 12 and 13, the attic without the ceiling, the floor to the pillar, the pole, etc. It may be arranged so as to be positioned above. Table 1 shows the detection range when the human detection sensors 30 and 32 are infrared detection type sensors.

  The floor heating control of the first embodiment is performed by the following method. That is, in normal times, the two control switches 24 of the temperature control means 22 are sequentially turned on and off to distribute the energization time to the heater units 16 and 17 as shown in FIG. (See Table 2 below), and is performed while sequentially switching every certain set time T, for example, every 10 minutes. 2 (a) and 2 (b), Ta is the time during which the energization to the heater unit 16 is on, and Tb is the time during which the energization to the heater unit 17 is on. Each of the set times T (10 Min)). Therefore, in FIGS. 2A and 2B, the shaded area indicates the time during which the energization to the heater units 16, 17 is on, and the non-shaded area indicates the time during which the energization to the heater units 16, 17 is off. Is shown. In this way, the heater units 16 and 17 are energized while being sequentially switched every set time T, and the temperature detected by each floor temperature sensor 20 and the control target temperature set by the temperature setting means are temperature control means. 22, while controlling the energization amount to each heater unit 16, 17, the floor heating sections 12, 13 of the floor heating station 10 are heated to the control target temperature and controlled so as to maintain the temperature. To do.

  Assume that, for example, a person enters the floor heating area 12 and sits on the heater unit 16 while the floor heating place 10 is being heated by the floor heating control method of the first embodiment. Then, as shown in Table 1, the presence of a person is detected based on the person detection information from the infrared detection type human detection sensor 30 and output to the temperature control means 22. Furthermore, a person who enters the floor heating area 12 does not move and causes low-temperature burns by continuously sitting in the area 12 for a certain period of time, for example, more than a time near the time at which low-temperature burns may occur. When it is determined that there is a risk, as shown in Table 2, the energization time distribution is changed from Step 1 to Step 2, and it is determined that there is a risk of low temperature burns as shown in Table 2 and FIG. 2 (b). The energization amount to the heater unit 16 in the floor heating area 12 that has been performed, that is, the energization time (the time to turn on the energization by closing the control switch 24 on the heater unit 16 side) Ta is a predetermined ratio from the set time T (10 minutes), For example, it decreases by 20% and shortens it to 0.8T, which is 8 minutes, and increases the non-energization time (time to turn off the power by opening the control switch 24 on the heater unit 16 side) by 20%, at 1.2T There are 12 Longer to.

  On the other hand, as shown in Table 2 and FIG. 2 (b), for example, the heater unit in the floor heating area 13 that has been determined that there is no person and there is no risk of low-temperature burns, as shown in Table 2 and FIG. The energization amount to 17, that is, the energization time (the time to turn on the energization by closing the control switch 24 on the heater unit 17 side) Tb is increased by 20% from the set time T (10 minutes) and is 12T. In addition, the non-energization time (time for turning off the energization by opening the control switch 24 on the heater unit 17 side) is reduced by 20% and shortened to 8 minutes, which is 0.8T. In the first embodiment, the temperature control means 22 shifts (corrects) the control target temperature of the temperature setting means for the bed temperature on the heater unit 16 side to a temperature lower by one rank than the temperature corresponding to the stage 1. Then, the control target temperature of the temperature setting means for the bed temperature on the heater unit 17 side is shifted to a temperature that is one rank higher than the temperature corresponding to stage 1. Thus, the energization amount to each heater unit 16 and 17 is controlled.

  Furthermore, when a person does not move, such as sitting down for a certain period of time or longer, the energization time distribution is performed in step 2 based on the human detection information from the human detection sensor 30 as shown in Table 2. Is changed from step 3 to step 3, the energization time Tb to the heater unit 17 is reduced by 40% from the set time T (10 minutes), shortened to 0.6 T, 6 minutes, and the non-energization time is increased by 40%. , Increase to 14 minutes, which is 1.4T. On the other hand, according to the decreasing rate of the energization time, as shown in Table 2, the energization amount to the heater unit 17, that is, the energization time Tb is increased by 40% from the set time T (10 minutes), and 1.4T Is increased to 14 minutes, and the non-energization time is reduced by 40% and shortened to 6 minutes, which is 0.6T. In the first embodiment, the temperature control means 22 shifts the control target temperature of the temperature setting means for the bed temperature on the heater unit 16 side to a temperature lower by two ranks than the temperature corresponding to the stage 1, and the heater unit. The control target temperature of the temperature setting means for the 17th floor temperature is shifted to a temperature that is two ranks higher than the temperature corresponding to stage 1. In this manner, the energization amounts to the heater units 16 and 17 are similarly controlled.

  Such a control operation is repeated, and the floor heating area 12 in which it is determined that there is a possibility of causing a low temperature burn, that is, the floor temperature on the heater unit 16 side is lowered to prevent the low temperature burn and cause the low temperature burn. The floor heating area 13 that is determined not to be a fear, that is, the floor temperature on the heater unit 17 side is prevented from rising and the temperature of the entire floor heating station 10 is prevented from dropping below the control target temperature. Maintain a comfortable heating environment over a wide range at all times.

  When a person goes out of the floor heating area 12 and the person detection sensor 30 no longer detects a person, the energization time distribution of each heater unit 16, 17 is returned from stage 3 to stage 2 or stage 1, Further, in the temperature control means 22, the control target temperature of the temperature setting means on each heater unit 16, 17 side is returned to the temperature corresponding to stage 2 or stage 1 from stage 3, and the energization amount to each heater unit 16, 17 is changed. Control. Furthermore, when the time during which no person enters the floor heating area 12 continues for a predetermined time, the energization of the heater units 16 and 17 is stopped.

  According to the floor heating control method of the present invention, as is apparent from the first embodiment, the non-contact type human detection sensors 30 and 32 are arranged above the heater units 16 and 17 in the floor heating zones 12 and 13. Therefore, the presence / absence and movement of a person over a wide area of the floor heating area 10, that is, the floor heating area 12, 13 divided into a plurality of floor heating areas 12, 13 by a smaller number of human detection sensors 30, 32 than before. Can be detected, and it is possible to accurately and reliably prevent humans from causing low-temperature burns.

  Moreover, since the number of deployment of the human detection sensors 30 and 32 is reduced, an increase in the cost of the heater units 16 and 17 can be suppressed, and the labor for arranging the human detection sensors 30 and 32 can be saved and the construction of the floor heating system is easy. Thus, the construction cost can be reduced.

  Further, for example, based on the human detection information from the human detection sensor 30, for example, there is a risk that the amount of energization to the heater unit 16 in the floor heating area 12 that is determined that a human may cause a low-temperature burn may cause a low-temperature burn. Each heater unit is set so as to be less than the energization amount to the heater unit 17 in the floor heating area 13 determined not to be increased, and to increase the energization amount to the heater unit 17 in the floor heating area 13 in accordance with the decrease in the energization amount. Since the energization amount to 16 and 17 is controlled, a comfortable heating environment can be always maintained over a wide range of the floor heating place 10, that is, the floor heating areas 12 and 13.

  Furthermore, when there are no more people, this can be detected by the human detection sensors 30 and 32 to reduce the amount of power supplied to the heater units 16 and 17, so that useless energy can be saved. .

  Further, as in the first embodiment, when the energization to each heater unit 16, 17 is controlled by switching the energization to each heater unit 16, 17 sequentially instead of simultaneously, the mutual interference occurs when controlling the energization amount to each heater unit 16, 17. Thus, stable control can be performed without causing delay or disturbance of the control operation. In addition, it is preferable to control the amount of current supplied to the heater by changing the current supply time instead of the current supply, because simple and highly accurate control can be performed.

  Furthermore, when the heating amount of each heater unit 16, 17 is controlled to warm the floor heating location 10, that is, the floor heating section 12, 13, to the set control target temperature, the heater unit 16, 17 is energized. The floor heating location, that is, the temperature of the plurality of floor heating zones, is set by shifting the control target temperature of the floor temperature of the floor heating zones 12, 13 according to the decrease or increase of the amount. This is preferable because it can be quickly heated to the control target temperature.

  FIG. 3 is a schematic diagram showing a second embodiment of the floor heating control method according to the present invention, and FIG. 4 shows a deployment state of the human detection sensors 30 and 32 in the floor heating system of the second embodiment. FIG. 5B is a plan view, FIG. 5A is a human detection sensor 30, FIG. 6B is a schematic diagram showing the configuration of the human detection sensor 32, and FIG. 6 shows three heater units 16, 17, 18. FIG. 5A is a diagram illustrating a switching state of energization during normal time, and FIG. 5B is a diagram illustrating a switching state of energization when a person is continuously present on the heater unit 16 side. It is. In addition, the same code | symbol is attached | subjected to what has the same structure and function as 1st Embodiment.

  As shown in FIGS. 3 and 4A and 4B, the floor heating system used for the floor heating control method of the second embodiment has three floor heating units 10 such as one room and a room. It is divided into heating zones 12, 13, and 14, and each floor heating zone 12, 13, and 14 is configured by laying heater units 16, 17, and 18 such as an electric carpet having a heater and a floor heating panel.

  In addition, floor temperature sensors 20, which are temperature detection means, are provided in the floor heating zones 12, 13, and 14. The floor temperature sensor 20 is provided in each heater unit 16, 17, 18 in the illustrated example, but may be provided on the front surface or the back surface of the underfloor material.

  One terminal of each heater unit 16, 17, 18 has three temperature control means (temperature controllers) 22 for heating the floor heating place 10, that is, the floor heating sections 12, 13, 14 to a set control target temperature. Are connected to a control switch (control relay contact) 24 by a power line 26, and the other terminals of the heater units 16, 17, 18 are connected to the temperature control means 22 side by a common power line 28. The temperature control means 22 has substantially the same configuration as the temperature control means 22 of the first embodiment, except that signal processing for the heater unit 18 is newly added.

  Further, as shown in FIGS. 4A and 4B, in the heater units 16, 17, and 18 laid in the floor heating areas 12, 13, and 14, above the intermediate (boundary) portion of the heater units 16 and 17. A non-contact type human detection sensor 30 is provided, and a non-contact type human detection sensor 32 is provided above the middle (boundary) portion of the heater units 17 and 18. The human detection sensors 30 and 32 are composed of an infrared sensing type, an imaging camera, etc. for detecting presence / absence of a person and movement of the person. In the illustrated example, the person detection sensors 30 and 32 are arranged on the ceiling between the floor heating areas 12 and 13 and 13 and 14. However, it may be arranged on the wall between the floor heating zones 12 and 13 and between the walls 13 and 14. As shown in FIG. 5 (a), the human detection sensor 30 has its left half covered with a filter 34 to reduce sensitivity, and the human detection sensor 32 has a surface detection as shown in FIG. 5 (b). The right half is covered with the filter 35 so that the sensitivity is lowered.

  Table 3 shows the detection range when the human detection sensors 30 and 32 are infrared sensors, and Table 4 shows the determination criteria for the presence or absence of a person depending on the detection state of the human detection sensors 30 and 32.

  The floor heating control of the second embodiment is performed by the following method. That is, in normal times, the three control switches 24 of the temperature control means 22 are sequentially turned on and off, and the distribution of energization time to the heater units 16, 17, and 18 as shown in FIG. 1 (see Table 5 below), and is performed while sequentially switching every certain set time T, for example, every 10 minutes. 6 (a) and 6 (b), Ta is the time during which the energization to the heater unit 16 is on, Tb is the time during which the energization to the heater unit 17 is on, and Tc is the energization to the heater unit 18. Are set to be equal to the set time T (10 minutes). Accordingly, in FIGS. 6A and 6B, the shaded area indicates the time during which the energization to the heater units 16, 17, 18 is on, and the non-hatched area indicates that the energization to the heater units 16, 17, 18 is off. Shows the time that has become. As described above, the heater units 16, 17, and 18 are energized while being sequentially switched every set time T, and the temperature detected by each floor temperature sensor 20 and the control target temperature set by the temperature setting means are set to the temperature. Compared with the control means 22, the inside of the floor heating sections 12, 13, and 14 of the floor heating place 10 is heated to the control target temperature while controlling the energization amount to each heater unit 16, 17, and 18, and the temperature Control to hold.

  Assume that, for example, a person enters the floor heating area 12 and sits on the heater unit 16 while the floor heating place 10 is being heated by the floor heating control method of the second embodiment. Then, as shown in Tables 3 and 4, the human detection sensor 30 weakly detects the presence of the person and the human detection sensor 32 becomes insensitive, and detects the presence of the person based on such human detection information. And output to the temperature control means 22. Furthermore, a person who enters the floor heating area 12 may not move and may cause low-temperature burns by sitting in the area 12 for a certain period of time or longer, for example, a time close to the time at which low-temperature burns may occur. As shown in Table 5, the energization time distribution was changed from Stage 1 to Stage 2, and it was judged that there is a risk of humans getting low-temperature burns as shown in Table 5 and FIG. 6 (b). The energization amount to the heater unit 16 in the floor heating area 12, that is, the energization time (the time to turn on the energization by closing the control switch 24 on the heater unit 16 side) Ta is set to a predetermined ratio from the set time T (10 minutes), for example Decrease by 20%, shorten to 0.8T, 8 minutes, and increase non-energization time (time to turn off the power by opening the control switch 24 on the heater unit 16 side) by 20% to 1.2T In 12 minutes Kusuru.

  On the other hand, according to the decreasing rate of the energization time, as shown in Table 5 and FIG. 6 (b), for example, the floor heating areas 13 and 14 determined that there is no person and there is no risk of low-temperature burns. The energization amount to the heater units 17, 18, that is, the energization time (the time for turning on the energization by closing the control switch 24 on the heater units 17, 18) Tb, Tc is 2 in total from the set time T (10 minutes). Increase by 10% each so that it increases, and increase it to 11 minutes, which is 1.1T, and the total non-energization time (time to turn off the power by opening the control switches 24 on the heater units 17 and 18 side) Decrease by 10% to reduce by 20% and shorten to 9 minutes, which is 0.9T. In the second embodiment, the temperature control means 22 shifts the control target temperature of the temperature setting means for the bed temperature on the heater unit 16 side to a temperature one rank lower than the temperature corresponding to the stage 1, and the heater unit. The control target temperature of the temperature setting means for the bed temperature on the 17th and 18th sides is shifted to a temperature that is increased by one-half rank so that the control target temperature is raised one rank higher than the temperature corresponding to stage 1. In this way, the energization amount to each heater unit 16, 17, 18 is controlled.

  Furthermore, when a person keeps sitting for a certain time or longer, such as when the person does not move, the distribution of energization time is distributed as shown in Table 5 based on the human detection information from the human detection sensors 30 and 32. Changed from stage 2 to stage 3, the energization time Ta to the heater unit 16 is reduced by 40% from the set time T (10 minutes), shortened to 0.6T, 6 minutes, and the non-energization time is 40%. Increase and lengthen to 14 minutes, which is 1.4T. On the other hand, as shown in Table 5, according to the decrease rate of the energization time, the energization amount to the heater units 17 and 18 on the floor heating areas 13 and 14 determined that there is no risk of human burns at low temperatures, The energization times Tb and Tc are increased by 30% from the set time T (10 minutes), lengthened to 13 minutes, which is 1.3T, and the non-energization time is decreased by 30%, to 7 minutes, which is 0.7T. shorten. In the second embodiment, the temperature control means 22 shifts the control target temperature of the temperature setting means for the bed temperature on the heater unit 16 side to a temperature lower by two ranks than the temperature corresponding to the stage 1, and the heater unit. The control target temperature of the temperature setting means for the bed temperature on the 17th and 18th side is shifted to a temperature that is increased by one rank so that the total temperature is increased by two ranks from the temperature corresponding to stage 1. In this way, the energization amount to each heater unit 16, 17, 18 is similarly controlled.

  Such a control operation is repeated, and the floor heating area 12 in which it is determined that there is a possibility of causing a low temperature burn, that is, the floor temperature on the heater unit 16 side is lowered to prevent the low temperature burn and cause the low temperature burn. It is possible to prevent the floor temperature of the floor heating sections 13 and 14 that are determined to have no fear, that is, the heater units 17 and 18 side, from rising and the temperature of the entire floor heating section 10 from falling below the control target temperature. A comfortable heating environment is constantly maintained over a wide area of the heating place 10.

When a person goes out of the floor heating area 12 and the human detection sensors 30 and 32 become insensitive to each other and no longer detect humans, as shown in Table 4, each heater unit 16, The distribution of the energization time 17 and 18 is returned from stage 3 to stage 2 or stage 1, and the control target temperature of the temperature setting means on each heater unit 16, 17, 18 side is changed from stage 3 to stage 2 in the temperature control means 22. Alternatively, the temperature is returned to the temperature corresponding to stage 1, and the energization amount to each heater unit 16, 17, 18 is controlled. Furthermore, when the time during which a person does not enter the floor heating area 12 continues for a predetermined time, the energization of each heater unit 16, 17, 18 is stopped. Also in the floor heating control method of 2nd Embodiment, the same effect as the case of the floor heating control method of the said 1st Embodiment is acquired.

  In addition, in the case of an imaging camera having the CCD function or the like as the human detection sensor 30, 32, the detection range is wider than that of the infrared detection type, so depending on the size of the floor area of the floor heating place 10, In the case of the first embodiment, either one of the human detection sensors 30 and 32 is placed above the middle (boundary) portion of the heater units 12 and 13, and in the case of the second embodiment, the human detection sensor 30. , 32 can be arranged above the heater unit 13 and the other human detection sensor 30 or the human detection sensor 32 can be omitted.

  Further, in the first embodiment, the case where a person enters the heater unit 16 side and does not move, and there is a risk of causing low temperature burns by sitting down for a certain time or more, but the person enters the heater unit 17 side and moves. In the case where there is a risk of low temperature burns, such as sitting for more than a certain time, the same control can be performed. In the second embodiment, a case has been described in which a person enters the heater unit 16 side and does not move, and there is a risk of causing low temperature burns, such as sitting down for a certain period of time, but the heater unit 17 side, the heater unit 18 side, or the heater The same control can be performed for a case where a person enters the unit 16 side and the heater unit 18 side and does not move, and there is a risk of causing low-temperature burns, such as sitting down for a certain period of time. When an infrared detection type human detection sensor is provided for each heater unit 16, 17, 18, or a human detection sensor for an imaging camera is provided, the heater unit 16 side and the heater unit 17 side, or the heater unit 17 The same control can be performed when a person enters the heater side and the heater unit 18 side and does not move but may sit down for a certain period of time or cause a low-temperature burn.

  Moreover, in 2nd Embodiment, the energization time to the heater unit 16 of the floor heating area 12 judged that there exists a possibility of causing a low temperature burn based on the human detection information from the human detection sensors 30 and 32 is the set time. For example, the heater units 17 of the floor heating zones 13 and 14 that have been reduced by 20%, increased the non-energization time by 20%, and determined that there is no risk of low-temperature burns according to the decrease rate of the energization time, The energization time to each heater unit 16, 17, 18 is increased by 10% each so that the energization time to 18 is increased by 20% in total, and the non-energization time is decreased by 10% each. However, only one of the heater units 17 and 18 of the floor heating sections 13 and 14 is increased by 20% and the non-energization time is decreased by 20%, so that each heater unit is controlled. It may be controlled energization amount to Tsu bets 16,17,18.

  Furthermore, in both embodiments, there is no possibility that a person may cause low-temperature burns during the energization time to the heater unit in the floor heating area that is determined that there is a possibility that the person may cause low-temperature burns based on the human detection information from the human detection sensor. Decrease the energization time to the heater unit in the floor heating area judged to be, and increase the energization time to the heater unit in the floor heating area judged that there is no risk of low temperature burns as the energization time decreases The amount of current supplied to each heater unit is controlled so that a person may cause low-temperature burns. The floor heating is determined to be less than the current applied to the heater unit in the floor heating area that is determined to be unexistent, and the person is not likely to cause low-temperature burns according to the decrease in the current applied. As increasing the current supplied to the frequency of the heater unit may be controlled amount of current to each heater unit.

  In both embodiments, the bed temperature sensor 20 is used as the temperature detection means, but a room temperature sensor (not shown) may be used. One or a plurality of room temperature sensors are provided at an appropriate location such as a floor heating point 10, that is, a wall of the floor heating zone 12, 13 (first embodiment) or the floor heating zone 12, 13, 14 (second embodiment). It is done. In the case where control is performed so that the room temperature in the floor heating sections 12 and 13 or the floor heating sections 12, 13, and 14 of the floor heating place 10 is heated to the set control target temperature and the temperature is maintained. The floor heating zones 12, 13 or the floor heating zones 12, 13, 14 are partitioned by partition walls and are not independent, and are in a barrier-free state. Therefore, the control target temperature of the room temperature of the floor heating area 12, 13 or the floor heating area 12, 13, 14 according to the decrease or increase of the energization amount to the heater unit 16, 17 or the heater unit 16, 17, 18 is set. It is not always necessary to shift low or high. It is possible to perform control while maintaining an initial control target temperature set in advance. In this case, reduce the amount of electricity to the heater unit in the floor heating area that is determined to cause a low-temperature burn, and the floor heating that is determined to not cause a low-temperature burn according to the decrease in the amount of electricity. The energization amount of the heater unit in the area may be increased by the same rate as the decrease rate of the energization amount as in the above two embodiments, but a larger ratio, for example, the former energization amount is 20%. When it is decreased, the latter energization amount may be increased by 30%. If it does so, even if the room temperature of a floor heating location falls from control target temperature, it can return to control target temperature as much as possible, and a comfortable heating environment state can be maintained.

  Also, in both embodiments, during normal times (before performing energization control based on the human detection information from the human detection sensor), the heater units are energized at the same time, based on the human detection information from the human detection sensor, Decrease the amount of electricity applied to the heater unit in the floor heating area that is judged to cause low temperature burns to less than the amount of electricity supplied to the heater unit in the floor heating area judged not to cause low temperature burns. The energization amount to each heater unit may be controlled so as to increase the energization amount to the heater unit in the floor heating area that is determined not to cause low-temperature burn according to the decrease.

  Furthermore, in both embodiments, when the energization to each heater unit is controlled by switching sequentially at every set time T, it is switched at regular intervals every set time T during normal times. When the capacity of the heater unit, the ambient temperature environment, and the like are different, the energization time for one heater unit may be changed longer or shorter than the energization time for the other heater unit.

It is a schematic diagram showing a first embodiment of a floor heating control method according to the present invention. In FIG. 1, it is a figure which shows the switching state of the electricity supply to the two heater units 12 and 13, (a) shows the switching state of the electricity supply at normal time, (b) exists continuously. It shows the switching state of energization at the time. It is a schematic diagram which shows 2nd Embodiment of the floor heating control method which concerns on this invention. The arrangement | positioning state of the human detection sensors 30 and 32 in the floor heating system of 2nd Embodiment of FIG. 3 is shown, (a) is a front view, (b) is a top view. 4A is a schematic diagram showing the configuration of the human detection sensor 30 in FIG. 4, and FIG. FIG. 5 is a diagram showing a switching state of energization to the three heater units 16, 17, and 18, (a) is a diagram illustrating a switching state of energization at normal time, and (b) is a diagram showing a person continuing to the heater unit 16 side. It is a figure which shows the switching state of electricity supply when it exists.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Floor heating location 12 Floor heating area 13 Floor heating area 14 Floor heating area 16 Heater unit 17 Heater unit 20 Floor temperature sensor 22 Temperature control means 24 Control switch 26 Power supply line 28 Power supply line 30 Human detection sensor 32 Human detection sensor 34 Filter

Claims (3)

  One floor heating location was divided into multiple floor heating zones, and a floor heating system was constructed by laying heater units in each floor heating zone, and the floor heating location was set by controlling the amount of electricity to each heater unit. In the floor heating control method for heating to a control target temperature, a non-contact type human detection sensor is provided above the heater unit in the floor heating area, and a person is burned at a low temperature based on the human detection information from the human detection sensor. Decrease the energization amount of the heater unit in the floor heating area that has been determined to cause the risk of heating, and increase the energization amount of the heater unit in the floor heating area that has been determined that there is no risk of low-temperature burns according to the decrease The floor heating control method according to claim 1, wherein the control is performed as follows.   Normally, the heater unit is energized while switching the heater unit sequentially every set time. Based on the human detection information from the human detection sensor, the heater unit in the floor heating area is judged to have a risk of low-temperature burns. 2. The control is performed to reduce the time and increase the energization time to the heater unit in the floor heating area which is determined not to cause low temperature burns according to the decreasing rate of the energization time. Floor heating control method.   Based on the human detection information from the human detection sensor, the energization amount of the heater unit in the floor heating area that is determined to cause a low temperature burn is reduced and the control target temperature is shifted to a lower level, and the energization amount The control target temperature is controlled by increasing the energization amount of the heater unit in the floor heating area that is determined not to cause a low-temperature burn according to the decrease in the temperature and the control target temperature is shifted to a higher level. 2. The floor heating control method according to 2.

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