JP2802471B2 - Thermal sensation calculation device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a thermal sensation felt by a human body (eg, equivalent temperature (Teq)).
And a thermal sensation calculation device that calculates

[0002]

2. Description of the Related Art As a thermal sensation calculating device of this type, the present applicant has previously proposed Japanese Patent Application No. Hei. FIG.
FIG. 2 is a block diagram of the thermal sensation calculating device. In the figure, the thermal sensation calculation device 1 includes an input unit 2, a calculation unit 3
And a display output unit 4. The input unit 2 is provided with the thermal resistance Icl of the clothes as a set value, while the detected temperature Ta from the temperature sensor 6 and the measured temperature Tcr from the environment measuring unit 5 are provided as detected values. And
These set values and detected values are sent from the input unit 2 to the calculation unit 3, and the calculation unit 3 calculates the set temperature value θ _(th) , the heater power Hθ _(th) as heat energy information, and the equivalent temperature Teq. Can be

[0006] That is, as shown in FIG. 6, in a calculation section 3, a set temperature value calculation section 3-1 calculates a set temperature based on the detected air temperature Ta and the thermal resistance Icl of clothes by the following equation (1). The value θ _(th) is calculated. θ _(th) = a ₁ + a ₂ × Ta (1) Next, the heater control calculator 3-2 sets the set temperature value θ _(th)
The heater power Hθ _(th) (W) is supplied to the environment measuring unit 5 so that the measured temperature Tcr becomes equal to the measured temperature Tcr, and the heater power Hθ _(th) is measured.

As shown in FIG. 7, for example, an environment measuring section 5 includes a spherical module main body 5-11 and a heater 5-12 disposed inside the module main body 5-11.
And a temperature sensor 5 attached to the module body 5-11
-13.

The above-described heater power Hθ _(th) (W) is
This is supplied to the heater 5-12 in the environment measuring section 5. Then, the module main body 5-11 is heated by the heater 5-12 so that the measured temperature Tcr detected by the temperature sensor 5-13 is controlled to be equal to the set temperature value θ _{( th)} .

Then, the equivalent temperature calculation unit 3-3 calculates the equivalent temperature by the following equation (2) based on the detected temperature Ta, the thermal resistance Icl of the clothes, the set temperature value θ _(th) , and the heater power Hθ _(th). Calculate the temperature Teq ^* . Teq ^* = b ₁ + b ₂ × θ _(th) + b ₃ × Ta−b ₄ × Hθ _(th) (2) The equivalent temperature Teq ^* obtained by the equivalent temperature calculator 3-3 is the display output unit 4. To display.

According to this thermal sensation calculating device, even when the airflow velocity V _air is large, the equivalent temperature Teq ^* matches the equivalent temperature Teq felt by the human body with high accuracy, and accurate measurement of the equivalent temperature is possible. Become.

[0008]

However, in this thermal sensation calculation device, the above equation (2) is obtained in a steady state, and no consideration is given to a transient state. That is, in the above equation (2), the heater power Hθ _(th) is controlled according to a change in the detected temperature Ta and the measured temperature Tcr, but the time constant of the temperature sensor 6 and the environment measuring unit 5 in the element alone is controlled. , The transient response of the required equivalent temperature Teq ^* deteriorates. For this reason, if air conditioning control is performed at the obtained equivalent temperature Teq ^* , there is a problem that the control becomes unstable.

SUMMARY OF THE INVENTION The present invention has been made to solve such a problem, and an object of the present invention is to provide a thermal sensation calculation device capable of accurately and stably obtaining a thermal sensation even in a transient state. It is in.

[0010]

In order to achieve the above object, according to the present invention, a predetermined filter operation is performed on a detected temperature Ta from a temperature sensor to obtain a first detected temperature Ta '.
Filter means, the detected temperature Ta 'and the thermal resistance Icl of the clothes.
'And the set temperature value calculating means for calculating a set temperature value theta _(th)' bets on basis set temperature theta _(th) thermal energy information Hθ to the measured temperature Tcr and are equal as heating means _(th) while donor, the thermal energy information donating measuring means for measuring the thermal energy information H.theta _(th), the thermal energy by performing a predetermined filtering operation to the thermal energy information H.theta for measuring the thermal energy information donating measuring means _(th) Information Hθ _(th) '
Filter means, the detected temperature Ta ', the thermal resistance Ic of the clothes
l, a thermal sensation calculating means for calculating a thermal sensation based on the set temperature value θ _(th) ′ and the heat energy information Hθ _(th) ′.

[0011]

Therefore, according to the present invention, the first and the second
The time constant of the detected temperature Ta 'is made larger than the time constant of the measured temperature Tcr of the element alone by appropriately setting the filter operation by the filter means of (1).
If the time constant of a ′ is made equal to the time constant of the heat energy information Hθ _(th) ′, it is possible to make the transient response of the equivalent temperature Teq ^* close to a simple first-order lag.

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail based on embodiments.

FIG. 1 is a block diagram of a computing section in a thermal sensation computing device according to an embodiment of the present invention.
And corresponding. 6, the same reference numerals as those in FIG. 6 denote the same or equivalent components, and a description thereof will be omitted.

The present embodiment is different from the conventional thermal sensation calculating device in that a first filter section 3-4 and a second filter section 3-5 are additionally provided in the calculation section 3, and the calculation section 3 is provided. '
It is in the place.

The first filter section 3-4 is located before the set temperature value calculation section 3-1 and the equivalent temperature calculation section 3-3, and performs a predetermined filter calculation on the detected air temperature Ta from the air temperature sensor 6. , Detected air temperature Ta ′. Ta ′ = F1 (Ta) (3) F1: Filter operation on Ta

The second filter section 3-5 is located before the equivalent temperature calculation section 3-3, and performs a predetermined filter calculation on the heater power Hθ _(th) measured by the heater control calculation section 3-2. Heater power Hθ _(th) ′. Hθ _(th) ′ = F2 (Hθ _(th) ) (4) F2: Filter operation for Hθ _(th)

Here, F1 and F2 are, for example, as first-order lag calculations, so that the time constant of the detected temperature Ta 'is larger than the time constant of the measured temperature Tcr of the element alone, and the time constant of the detected temperature Ta' And the time constant of the heater power Hθ _(th) ′ are determined to be equal.

Since the detected temperature Ta 'is input in place of the detected temperature Ta, the set temperature value calculator 3-1 calculates the set temperature value θ _(th) ' by the following equation (5). θ _(th) '= a ₁ + a ₂ × Ta' (5)

Further, the equivalent temperature calculating section 3-3, 'calculated from is input, by the following equation (6), the equivalent temperature Teq ^*' heater power H.theta _(th) instead of heater power H.theta _(th) a I do. Teq ^* '= b ₁ + b ₂ × θ _(th) ' + b ₃ × Ta'-b ₄ × Hθ _(th) '(6)

FIG. 2 shows a response waveform in a transient state (when the temperature rises stepwise) of the measured temperature Tcr and the detected temperature Ta of the elements of the environment measuring section 5 and the temperature sensor 6 alone. In the figure, τ1 indicates a time constant of the detected temperature Ta, and τ2 indicates a time constant of the measured temperature Tcr. Since the heat capacity of the environment measuring unit 5 is large, τ1 <τ2.

FIG. 3 shows a response waveform of each part in the transient state (when the temperature rises by a step) when the filter units 3-4 and 3-5 are not provided (the configuration shown in FIG. 6). (A) is a response waveform of the measured temperature Tcr and the set temperature value θ _(th) , (b) is a response waveform of the detected temperature Ta and the equivalent temperature Teq ^* , and (c) is a heater power Hθ _(th ). ₃₎ shows a response waveform.

In FIG. 3, since the time constant of the set temperature value θ _(th) is τ1, which is the same as the time constant of the detected air temperature Ta, when the air temperature increases by a step, the control deviation e (e = θ _(th) −Tcr) becomes Initially, it becomes “positive”, and the heater power Hθ _(th) increases. Thereafter, the heater power Hθ _(th) decreases, and in a steady state,
It is smaller than before the temperature rose. Here, FIG.
As can be seen from the response characteristics at points t1 to t2 in (b), the equivalent temperature Teq ^* is transiently reversely operated.

FIG. 4 shows a response waveform of each part in a transient state (when the temperature rises stepwise) when the filter units 3-4 and 3-5 are provided (the configuration shown in FIG. 1). FIG. 7A shows the measured temperature Tcr and the set temperature value θ _(th) ′.
(B) shows the response waveforms of the detected temperatures Ta and Ta 'and the equivalent temperature Teq ^* ', and (c) shows the response waveforms of the heater powers Hθ _(th) and Hθ _(th) '. I have.

In FIG. 4, the time constant of the detected air temperature Ta 'is made larger than the time constant τ2 of the measured temperature Tcr of the element alone by the filter operation in the filter section 3-4. As a result, the time constant of the set temperature value θ _(th) ′ is later than the time constant τ2, and the control deviation e (e
= Θ _(th) '-Tcr) becomes "negative" from the beginning, and the reverse operation of the equivalent temperature Teq ^* ' is prevented. Also, the filter unit 3-5
The time constant of the heater power Hθ _(th) ′ is made equal to the time constant of the detected air temperature Ta ′ by the filter calculation in
The time constants of Ta ′, θ _{(th) and} “Hθ _(th) ” are uniform, and the transient response of the equivalent temperature Teq ^* ′ is close to a simple first-order lag.

[0025]

As is apparent from the above description, according to the present invention, by appropriately setting the filter operation in the first and second filter means, the time constant of the measured temperature Tcr of the element alone can be obtained. If the time constant of the detected air temperature Ta ′ is increased and the time constant of the detected air temperature Ta ′ is made equal to the time constant of the heat energy information Hθ _(th) ′,
It is possible to make the transient response of the equivalent temperature Teq ^* close to a simple first-order lag, and it is possible to accurately and stably obtain a thermal sensation even in a transient state. Air conditioning control can be performed.

[Brief description of the drawings]

FIG. 1 is a block diagram of a calculation unit in a thermal sensation calculation device according to an embodiment of the present invention.

FIG. 2 is a diagram showing a response waveform in a transient state (when the temperature rises by a step) of the measured temperature Tcr and the detected temperature Ta of the environment measurement unit and the temperature sensor element alone.

FIG. 3 is a diagram showing a response waveform of each unit in a transient state when a filter unit is not provided in the calculation unit.

FIG. 4 is a diagram showing a response waveform of each unit in a transient state when a filter unit is provided in the calculation unit.

FIG. 5 is a block diagram of a conventional thermal sensation calculation device.

FIG. 6 is a block diagram of a computing unit in a conventional thermal sensation computing device.

FIG. 7 is a schematic longitudinal sectional view illustrating an example of an environment measuring unit.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Thermal sensation calculation device 3 'calculation part 3-1 Set temperature value calculation part 3-2 Heater control calculation part 3-3 Equivalent temperature calculation part 3-4 First filter part 3-5 Second filter part 5 Environment measurement Part 6 Temperature sensor

Claims (1)

(57) [Claims] 1. A thermal sensation calculation device provided for an environment measurement unit having a heating means capable of adjusting a measurement temperature Tcr, wherein a predetermined filter operation is performed on a detection temperature Ta from a temperature sensor to detect a detection temperature Ta. A first filter means, a set temperature value calculating means for calculating a set temperature value θ _(th) ′ based on the detected air temperature Ta ′ and the thermal resistance Icl of the clothes, and the set temperature value θ _(th) 'and one of donating thermal energy information H.theta _(th) to said heating means so that the and the measured temperature Tcr is equal, the thermal energy information donating measuring means for measuring the thermal energy information H.theta _(th), the thermal energy 'a second filter means to the detection temperature Ta' information donor measuring means of the measuring thermal energy information H.theta _(th) thermal energy by performing a predetermined filtering operation to the information H.theta _(th), the thermal resistance of the garment Icl, the set temperature value θ _{(t h)} ′, a thermal sensation calculating means for calculating a thermal sensation based on the thermal energy information Hθ _(th) ′.