JPS63196917A - Room temperature controller - Google Patents

Abstract

PURPOSE:To control the room temperature with a minimum energy to secure comfortableness by correcting a room temperature set value on the basis of the output of a thermal circumstance sensor which detects the human sense of warmth/coolness and adjusting and controlling the room temperature on the basis of the new set value and the detected room temperature. CONSTITUTION:A thermal circumstance sensor 10 is provided on the front of the case of a room temperature controller and outputs warmth/coolness in the room, which is determined by various parameter values, as an equivalent temperature Tm. A microcomputer 80 reads in a set value SP1 of the room temperature, a room temperature Ta, and the temperature Tm from a level shifter 78, the thermistor of a room temperature sensor 81, and the sensor 10 respectively and calculates a deviation epsilonm between the temperature Tm and an equivalent temperature To of optimum warmth/ coolness and determines a new room temperature set value SP2 in accordance with this deviation epsilonm. Hereafter, a deviation epsilon between the set value SP2 and the room temperature Ta is obtained, and a manipulated variable is determined on the basis of this deviation by PID operation, and the controller output is sent. Consequently, comfortableness is always secured even in case of variance of the load and the energy for operation is reduced.

Description

[Detailed Description of the Invention] [Industrial Field of Application] The present invention relates to a room temperature controller for residential use, business use, etc., and particularly relates to a room temperature controller that controls room temperature in consideration of human thermal sensation. .

[Conventional technology]

FIG. 5 is a diagram showing the configuration of a conventional control system showing an example of use of a room temperature controller, and FIG. 6 is a diagram showing its electric circuit.

In Figure 5, 50 is the room where the room temperature should be controlled;
51 is an air conditioning controller, 52 is a cooler, 53 is a heater, 5
4 is a blower, 55 is an exhaust duct, 56 is a room temperature regulator, 5
7 indicates an air supply duct. In the room 50, a room temperature controller 70, which will be described later, is attached to, for example, a suitable wall.

As shown in FIG. 6, the electric circuit includes the cooler 52, the heater 53. Blower 54. The AC power source 60 . Power switch 61. It is equipped with an AC/DC converter 62, a voltage phase controller 63, and the like.

FIG. 7 is a perspective view showing the appearance of a conventional room temperature controller 70, FIG. 8 is a sectional view of the room temperature controller 70, and FIG. 9 is a block diagram showing the circuit of the room temperature controller 70.

As shown in FIG. 7, on the front of the case of the room temperature controller 70, there is a temperature setting panel 73 equipped with a temperature increase switch 71 and a temperature decrease switch 72, and a temperature display panel equipped with a set temperature display 74 and a detected temperature display 75. 76 is installed. Further, a gear 77 is provided on the side surface of the case of the room temperature controller 70 for introducing indoor air into the controller.

As shown in FIG. 8, a level shifter 78 is attached to the back side of the temperature setting panel 73, and a display driver 79 is attached to the back side of the display panel 76. A one-chip microcomputer (hereinafter referred to as microcomputer) 80 is installed on the rear wall of the case and protrudes inward from the case. A room temperature detection sensor 81 made of a thermistor, an A/D converter 82, and a D/A converter 83 are integrally attached to the microcomputer 80.

As shown in FIG. 9, the microcomputer 80 is a CPU.

It has ROM, RAM, I10 port, etc.

Next, the operation of the conventional example configured as shown in FIGS. 5 to 9 will be explained. When the power switch 60 is closed,
Power is supplied to each part. Therefore, in order to set the room temperature, the temperature increase switch 71 of the room temperature controller 70. Temperature reduction switch 7
2, the contact signals from the digital input sections of both switches are converted to TTL level by the level shifter 78 and taken into the microcomputer 80. This taken-in set temperature value is supplied to the set temperature display 74 via the display driver circuit 79 and displayed.

On the other hand, the temperature of the indoor air introduced into the case of the room temperature controller 70 from the gear gallery 77 is detected by a room temperature detection sensor 81 installed inside the case. And-
The room temperature detection signal from the room temperature detection sensor 81 is A/D
The signal is converted into a digital signal by the converter 82 and taken into the microcomputer 80 . This captured detected temperature value is
It is supplied to the detected temperature display 75 via the display driver circuit 79 and displayed. A controller output signal from the microcomputer 80 is output from the D/A converter 83.

The microcomputer 80 operates according to the flowchart shown in FIG. That is, in step 101, the room temperature set value SP corresponding to the operation of the temperature increase switch 71 and temperature decrease switch 72 is read and displayed, and in step 102, the current room temperature Ta is read from the room temperature detection sensor 73 and displayed. , Step 103 calculates the deviation ε between the room temperature set value SP and room temperature Ta, Step 104 performs PID calculation, and Step 105 calculates the controller output =1°. The manipulated variable U to the controller output is generally expressed by the following equation.

U- to ε + Στ/Ti +kTd (ε-ε)/τ n n- However, k: proportional sensitivity, Ti: integral time, Td: derivative time, τ: sampling time, ε: n-th control deviation ,
ε; n-1th control deviation.

The contents calculated using the above formula are sent to the outside in step 106, and the process returns to the starting point again. Repeat the same action.

The output signal from the room temperature controller 70 is supplied to the air conditioning controller 51. The air conditioning controller 51 operates based on the above-mentioned manually input signal, and the built-in voltage phase controller 6
3, the required power is supplied to the heater 53 to control the amount of heating. Thus, in this case, heating operation is performed, and the room 50 is heated.

In other words, if the room temperature Ta is higher than the set value SP, the PI
Decrease the operation WU based on the formula of D.

Therefore, the output of the room temperature controller 70 decreases, and the amount of heating decreases. Conversely, when the room temperature Ta is lower than the set value SP, the amount of heating is increased. By performing such an operation, the room temperature Ta of the room 50 is made to match the set value SP.

[Problem that the invention seeks to solve]

The above conventional example had the following problems.

For example, in the case of heating operation, when the room temperature set value is high, both the room temperature Ta and the wall temperature rise quickly, and radiation from the surrounding walls, etc. acts particularly effectively, and the comfort level of the room temperature quickly increases. It will be at "just the right level". However, during subsequent steady operation, once the wall temperature etc. have sufficiently warmed up, the initially set room temperature setting value is too high, resulting in a state of "overwarming." Moreover, the integrated value of all inputs becomes large, resulting in a lot of wasted energy.

On the other hand, if there is a change in the indoor load due to a sudden increase or decrease in the number of people in the room 50, a change in the outside temperature, etc., the previously set temperature becomes inappropriate and becomes "too warm".
However, there were drawbacks such as problems such as "too much cooling".

In other words, human thermal sensation is not determined simply by room temperature;
Despite being influenced by environmental factors such as air temperature, radiation, and airflow, as well as human factors such as thermal resistance of clothing and activity level, conventional devices The above-mentioned disadvantages occurred because the control was performed with only the control target being controlled.

The present invention has been made in consideration of these circumstances, and aims to provide a room temperature controller that can always ensure comfort even when load fluctuations occur, and can also realize energy-saving operation. do.

[Means for solving problems]

In order to solve the above-mentioned problems and achieve the object, the present invention takes the following measures. That is, a room temperature detection means for detecting the room temperature, a room temperature setting means for setting the room temperature, a warm ring sensor for detecting human thermal sensation, and a temperature control unit that adjusts the room temperature setting value according to the output of the warm ring sensor. A means for determining a new set value within a certain range is provided, and the room temperature adjusting means is controlled based on the new set value and the room temperature detected by the room temperature detecting means.

[Effect]

By taking such measures, the following effects are achieved. In other words, the room temperature setting value is automatically corrected within a certain range based on the output of the thermal sensor that detects human thermal sensation, and based on this corrected new room temperature setting value and the detected room temperature. Since the room temperature adjustment means is controlled in this manner, room temperature control that can ensure comfort can be performed using the minimum amount of energy required.

〔Example〕

FIG. 1 is a perspective view showing the appearance of a room temperature controller according to an embodiment of the present invention, FIG. 2 is a sectional view of the room temperature controller, and FIG. 3 is a block diagram showing the circuit configuration of the room temperature controller. be.

Note that the same parts as in FIGS. 7 to 9 are given the same reference numerals. As can be seen by comparing FIGS. 1 to 3 with FIGS. 7 to 9, in this embodiment, a warm ring sensor 10 is newly installed at the upper front of the case of the room temperature controller 70, and The signal detected by the ring sensor lO is sent to the A/D converter 8.
In addition, the equivalent temperature of the thermal sensation detected by the warm ring sensor 10 is displayed on the equivalent temperature display 11.
The point is that it is displayed by . Warm ring sensor] 0 is for detecting human thermal sensation.

Next, the operation of this embodiment configured as described above will be explained. Digital temperature increase switch 71 of the room 7m controller 70 to set the room temperature. When the down-IH switch 72 is operated, contact signals from the digital input sections of both switches are converted to TTL level by the level shifter 78 and taken into the microcomputer 80. This taken-in set temperature value is sent to the set temperature display 74 via the display driver circuit 79.
supplied and displayed.

On the other hand, the temperature of the indoor air C introduced into the case 70 from the gear gallery 77 is detected by a room temperature detection sensor 81 installed inside the case 70.

At the same time, thermal sensation information related to the indoor air introduced into the case 70 through the thermal ring sensor 10 is transmitted to the four sensors 10.
Detected by The room temperature detection signal from the room temperature detection sensor 81 and the thermal sensation information signal from the hot ring sensor 10 are converted into digital signals by the A/D converter 82 and taken into the microcomputer 80. The value of the captured room temperature detection signal is supplied to the detected temperature display 75 via the display driver circuit 79 and displayed, and the captured thermal sensation information signal is sent to the display driver circuit 79 as an equivalent temperature. The temperature is supplied to the equivalent temperature display 11 for display.

The temperature sensor 10 is connected to the room temperature controller 7 as described above.
Since it is installed at the top of the front of the case of
The environment resistance is detected, and the indoor temperature Ta and the indoor airflow are detected from the airflow D.

Therefore, the thermal sensation in the room determined by composite parameter values such as radiation, air temperature, and airflow is supplied to the display 11 and displayed in the form of an equivalent temperature. The controller output signal from the microcomputer 80 is sent to the D/A converter 83.
is output from.

The microcomputer 80 operates according to the flowchart shown in FIG. That is, as shown in the flowchart of FIG. 4, in step 21, the room temperature set value SP1 is read from the level shifter 78 and displayed. Step 2
At step 2, the room temperature Ta is read from the thermistor of the room temperature detection sensor 81 and displayed. In step 23, the equivalent temperature Tm of the indoor thermal sensation is read from the thermal sensor 10 and displayed. Then, in step 24, the deviation εm between the equivalent temperature Tm of the thermal sensation and the equivalent temperature To of the optimal thermal sensation is calculated, and in step 25, a new room temperature setting value SP2 is calculated according to the magnitude of the deviation ξm. Determine.

Thereafter, it operates in the same manner as the conventional example. That is, in step 26, the deviation ε between the new room temperature set value SP2 and the room temperature Ta is calculated, and based on this deviation ε, in step 27, the PID
Calculations are performed, the manipulated variable is determined in step 28, and a controller output is sent out in step 29.

In this way, according to this embodiment, the initially set setting value is
Assuming PI, if the room temperature Ta is low, the wall or floor temperature is low, and there is cold radiation from the human body to the wall, etc., in other words, in a situation where there is a thermal sensation such as "cold", the new set value SP2 is set. is automatically set to a level higher than the initial setting value SPI. Conversely, room temperature Ta is the initial setting value SPI
Even when the temperature is lower, if the wall or floor temperature is sufficiently high and there is heat radiating from the wall or floor to the human body, in other words, in a situation where there is a thermal sensation of "warmness", the new setting 1sP2 is set. Automatically adjusted to a lower level. In this way, according to the present embodiment, the optimal indoor temperature can be automatically maintained in real time depending on the thermal sensation of the room temperature. Moreover, the integrated value of all inputs becomes relatively small, and unnecessary energy consumption can be avoided, so that energy-saving operation can be performed.

Note that the present invention is not limited to the embodiments described above, and it goes without saying that various modifications can be made without departing from the gist of the present invention.

[Effects of the Invention] According to the present invention, the room temperature setting value is automatically corrected within a certain range based on the output of the warm ring sensor that detects human thermal sensation, and this corrected new room temperature setting value is automatically corrected within a certain range. Since the room temperature adjustment means is controlled based on the value and the detected room temperature, the room temperature can be controlled to ensure comfort using the minimum amount of energy required. In this way, it is possible to provide a room temperature controller that can always ensure comfort even if load fluctuations occur and can realize energy-saving operation.

[Brief explanation of the drawing]

Figures 1 to 4 are diagrams showing an embodiment of the present invention, in which Figure 1 is a perspective view showing the external appearance of the room temperature controller, Figure 2 is a sectional view of the room temperature controller, and Figure 3 is the room temperature controller. FIG. 4 is a block diagram showing the circuit configuration of FIG. 4, and FIG. 4 is a flow chart showing the control operation. Figures 5 to 10 are diagrams showing conventional examples,
Figure 5 is a control system diagram showing an example of how the room temperature controller is used.
FIG. 6 is a diagram showing the electric circuit thereof, FIG. 7 is a perspective view showing the external appearance of the room temperature controller, FIG. 8 is a sectional view of the room temperature controller, and FIG. 9 is a block diagram showing the circuit configuration of the room temperature controller. FIG. 10 is a flowchart showing the control operation. DESCRIPTION OF SYMBOLS 10... Warm ring sensor, 11... Equivalent temperature indicator for thermal sensation, 50... Indoor, 51... Air conditioning controller, 52
... Cooler, 53 ... Heater, 54 ... Air blower,
55... Exhaust duct, 56... Room temperature regulator, 57.
...Air supply duct, 60...AC power supply, 61...? I
x source switch, 62... AC/DC converter, 63...
・Voltage phase controller, 70... Room temperature controller, 71
...Temperature increase switch, 72...Temperature decrease switch, 73.
... Temperature setting panel, 74 ... Setting temperature display, 75
...Detected temperature display, 76...Temperature display panel, 7
7... Gear rally, 78... Level shifter, 79...
・Display driver, 80...Microcomputer, 81...Room temperature detection sensor, 82...A/D converter, 83...D/
A converter. Applicant's Representative Patent Attorney Takehiko Suzue Figure 1 Figure 2 Figure 4rRJ Figure 5 Figure 6 Figure 7 Figure 8 91 Judgment Figure 10 Procedural Amendment Statement March 25, 1985 Commissioner of the Patent Office Black 1) Yu Akira 1, Case Indication Special Application No. 62-28674 (620) Mitsubishi Heavy Industries, Ltd. 4, Agent Kasumi @ 3-7-2 UAE Building, Chiyoda-ku, Tokyo 10
0 Telephone 03 (502>3181 <main representative) 6. Full text of the specification to be amended 7. Contents of the amendment

Claims (1)

[Claims] a room temperature detection means for detecting the room temperature; a room temperature setting means for setting the room temperature; a warm ring sensor for detecting human thermal sensation; and a means for determining a new set value within the room, and a room temperature adjusting means is controlled based on the new set value and the room temperature detected by the room temperature detecting means.