JPH0640383A - Room temperature control device of pressure regulating room for diving simulator - Google Patents

Abstract

PURPOSE:To regulate the temperature to the temperature comfortable for a diver by constituting a room temperature control device with a fuzzy inference section evaluating the membership value for the control signal to a ventilation temperature regulating means with the inference table and a rule consequent section making the output signal from the fuzzy inference section not fuzzy and outputting the control signal based on it. CONSTITUTION:A control system 8 is provided with a fuzzy inference section 11 obtaining the conclusion according to the membership value table evaluating the membership value for the control signals to a ventilation temperature regulating means, i.e., an air operating valve 6 and an air action diaphragm valve 7 based on the output signals from the first, second, and third rule antecedent sections 10a, 10b, 10c and a rule consequent section 12 making the output signal from the fuzzy inference section 11 not fuzzy and outputting the control signal to the ventilation temperature regulating means. The temperature data are read out from a room temperature sensor 2 and temperature sensors 2', 2'' for temperature measurement, and the data are read out from a sweat quantity sensor 3 for sweat quantity detection.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pressure control chamber for a dive simulator, and more particularly to a room temperature control device for a pressure control chamber for a dive simulator, which is an improved temperature control device in the chamber.

[0002]

2. Description of the Related Art A conventional pressure adjusting chamber for a dive simulator is a high pressure He in order to pressurize the chamber to a depth equivalent to the diving depth.
Gas is supplied through a ventilation system. The atmosphere temperature in the pressure adjusting chamber is controlled by adjusting the temperature of the He gas sent into the chamber by the ventilation system by means of a ventilation temperature adjusting means comprising a cooler and a heater provided in the middle of the ventilation system. Has been done.

Basically, the temperature in the pressure adjusting chamber is
Based on a detection signal from a room temperature sensor provided in the same room, the external control panel controls the temperature to reach a predetermined target temperature by the above means. However, since the target temperature itself changes depending on the momentum of the diver housed in the room, under the present circumstances, the diver transmits his / her own feeling from the room to the controller through the microphone, and the target temperature of the diver is controlled by the control panel. The setting is being changed.

[0004]

By the way, in the conventional room temperature control means of the pressure adjusting chamber for the diving simulator as described above, the thermal conductivity of the He gas sent to the room is high and the comfort for the indoor diver is high. Since the sensible temperature range is very narrow, there is a problem that the controller must frequently set the target temperature on the control panel.

The present invention is intended to solve such a problem, and detects the room temperature of the pressure adjusting chamber with a room temperature sensor, and also uses a perspiration amount sensor attached to the diver housed in the room to diver the diver. To detect the amount of sweat
To provide a room temperature control device for a pressure control room for a diving simulator, which can adjust the room temperature to a comfortable temperature for a diver without frequently setting the room temperature by fuzzy control based on detection signals from these sensors. With the goal.

[0006]

In order to achieve the above object, a room temperature control device for a pressure adjusting chamber for a dive simulator of the present invention comprises a pressure adjusting chamber for a dive simulator and a ventilation system for the pressure adjusting chamber. A ventilation temperature adjusting means capable of adjusting the temperature of the air sent to the pressure adjusting chamber by the ventilation system,
A room temperature sensor capable of detecting the internal temperature of the pressure adjustment chamber,
A sweat rate sensor capable of detecting the sweat rate of the diver housed in the pressure adjusting chamber, and a control system for sending a control signal to the ventilation temperature adjusting means based on the detection signals of the room temperature sensor and the sweat rate sensor. A first rule antecedent part in which the control system performs conversion into a membership value set based on a detection signal from the room temperature sensor, and conversion into a membership value set based on a detection signal from the sweat rate sensor And a third rule antecedent section for performing conversion into a membership value set based on a change in the detection signal from the sweat rate detection sensor, and the first, second and From the fuzzy inference section that evaluates the membership value for the control signal to the ventilation temperature adjusting means by the inference table based on the output signal from the third rule antecedent section, and from the fuzzy inference section It is characterized in that it is composed of a rule after matter portion and defuzzification output signal and outputs the control signal based on this.

[0007]

In the room temperature control device for the pressure adjusting chamber for the diving simulator of the present invention described above, ventilation is performed by fuzzy control based on the detection signal from the room temperature sensor in the pressure adjusting chamber and the detection signal from the perspiration rate sensor attached to the diver. The control signal is sent to the temperature adjusting means to adjust the temperature of the gas supplied into the pressure adjusting chamber through the ventilation system, and the pressure adjusting chamber is kept at an appropriate temperature.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A room temperature control device for a pressure adjusting chamber for a dive simulator as an embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a system diagram thereof, FIG. 2 is a block diagram of its control system, and FIG. FIG. 4 is a flowchart showing the flow of the control, and FIG. 4 is an explanatory diagram of fuzzy inference.

As shown in FIGS. 1 and 2, the room temperature control device for a pressure adjusting chamber for a dive simulator according to this embodiment includes a pressure adjusting chamber 1 for a dive simulator and a ventilation system 13 for the pressure adjusting chamber 1. In addition, the ventilation system 13 is used for pressure control chamber 1.
And a ventilation temperature adjusting means capable of adjusting the temperature of the gas sent to.

A room temperature sensor 2 capable of detecting the internal temperature is provided in the pressure adjusting chamber 1, and a sweat rate sensor 3 (for example, a sweat rate sensor 3 capable of detecting the sweat rate of a diver housed in the pressure adjusting chamber 1). Resistance value change detection formula) is provided.

Further, there is provided a control system 8 which sends a control signal to the ventilation temperature adjusting means based on the detection signals of the room temperature sensor 2 and the sweat rate sensor 3.

The ventilation temperature adjusting means can change the cooling capacity by adjusting the inflow amount of the refrigerant provided in the ventilation system 13, and can change the heating capacity by adjusting the inflow amount of the cooler 4 and the heating steam. The flow rate of the refrigerant flowing into the cooler 4 is adjusted by the air operated valve 6 whose opening is adjusted by the air from the service air system 14, and the flow rate of the heated steam flowing into the heater 5 is It is regulated by an air-actuated diaphragm valve 7 whose opening is regulated by air from the service air system 14.

In the ventilation system 13, between the cooler 4 and the heater 5 and between the heater 5 and the pressure adjusting chamber 1, there are temperature sensors 2 ', 2 "capable of detecting the temperature of the ventilation gas. It is provided.

The control system 8 is, as shown in FIG.
First, the detection from the first rule antecedent part 10a which performs conversion into a membership value set according to the membership value table as shown in [Table 3] based on the detection signal T from the room temperature sensor 2 and the perspiration amount sensor 3 Second rule antecedent part 10b for converting into a membership value set according to the membership value table as shown in [Table 1] based on the signal S, and differentiation for applying a differentiation operation to the detection signal from the sweat rate sensor 3 The circuit 9 and the third rule antecedent section 10c for performing conversion into a membership value set according to the membership value table as shown in [Table 2] based on the differential signal ΔS from the differential circuit 9 are provided. The membership values in Tables 1 to 3 indicate fuzzy characteristics and indicate the degree to which the ambiguity is quantitatively handled. In this embodiment, the discrete value type is used for facilitating the calculation.

[Table 1]

[Table 2]

[Table 3]

Further, the control system 8 includes first, second and third control systems.
Based on the output signals from the antecedent parts 10a, 10b, 10c of the rule, the membership values for the control signals to the ventilation temperature adjusting means, that is, the air actuated valve 6 and the air actuated diaphragm valve 7 are set as [Table 4], A fuzzy reasoning unit 11 which evaluates by a reasoning table (fuzzy rule) as shown in [5] and makes a conclusion according to a membership value table as shown in [Table 6].
And a rule consequent unit 12 that defuzzifies the output signal from the fuzzy inference unit 11 and outputs a control signal to the ventilation temperature adjusting means based on the defuzzification. by the way,
In the fuzzy rules in Tables 4 and 5, rule 1: if the amount of perspiration is very small and the amount of perspiration is greatly reduced, then the rule is expressed by if then know-how, such as heating significantly.

[Table 4]

[Table 5] T: Indoor temperature ΔS; Change in sweat rate S: Sweat rate input side NL: Large negative (relative to target value) NS; Small negative (〃) ZR; 0 (〃) PS; Small positive (〃) PL; Large Positive (〃) Output side NL; Large cooling NS; Small cooling ZR; 0 PS; Small heating PL; Large heating

[Table 6]

In the present embodiment, the control is performed according to the flow chart shown in FIG. That is, first, the communication device is initialized in the initialization routine, and a necessary lookup table (trigonometric function or the like) is created. Next, in the temperature measurement, the temperature data is read from the room temperature sensor 2 and the temperature sensors 2'and 2 ", and in the subsequent detection of the amount of perspiration, the data is read from the perspiration amount sensor 3. Based on these data Fuzzy inference is performed and control output to the ventilation temperature adjusting means is performed.Fuzzy inference is explained according to a concrete example below.Perspiration amount = 0.7 × 10 ^-6 mg / cm ² / sec, sweating Amount change = -0.1 x 10 ^-6 mg / cm ² / sec, and the target temperature difference is -0.8 ° C (stated in Tables 1 to 3) As shown in Fig. 4. In each rule, the condition section membership value C
For each rule, the logical product of the grades of the input values is taken to obtain the conclusions C ₁ 'to C ₄ ' for each rule (a) to (d) and the conclusions C ₁ 'to C ₄ ' for each rule are ORed. In addition to the work of tabulating all the conclusions, the center of gravity operation (e) is performed to obtain one final value for all the conclusions in the above inference processing. In this example, the center of gravity is 1.67, and the maximum heating is 1.67 / 4 × 10
0 (%) ≈ 42%.

As described above, the present embodiment has an advantage that the comfortable sensation temperature under the high pressure / He environment can be automatically obtained in the pressure adjusting chamber 1 without frequent temperature setting operation by the controller.

[0018]

As described above in detail, according to the room temperature control device for the pressure adjusting chamber for the dive simulator of the present invention, the temperature control in the pressure adjusting chamber is attached to the room temperature sensor in the chamber and the diver in the chamber. By performing fuzzy control based on the detection signal from the sweat rate sensor, the comfortable sensation temperature adjustment for divers under high pressure and He environment is automatically performed without the need for frequent temperature setting operations by the controller. The effect of being carried out is obtained.

[Brief description of drawings]

FIG. 1 is a system diagram of a room temperature control device of a pressure adjusting chamber for a diving simulator as an embodiment of the present invention.

FIG. 2 is a block diagram of the control system of FIG.

FIG. 3 is a flowchart showing a control flow of FIG.

FIG. 4 is an explanatory diagram of fuzzy inference.

[Explanation of symbols]

 1 Pressure Control Room for Diving Simulator 2 Room Temperature Sensor 2 ', 2 "Temperature Sensor 3 Sweat Rate Sensor 4 Cooler 5 Heater 6 Air Actuated Valve 7 Air Actuated Diaphragm Valve 8 Control System 9 Differential Circuit 10a First Rule Preceding Part 10b Second rule antecedent part 10c Third rule antecedent part 11 Fuzzy inference part 12 Rule consequent part 13 Ventilation system 14 Service air system T Room temperature signal S Sweat rate signal ΔS S change (differential) signal

Claims (1)

[Claims] 1. A pressure adjusting chamber for a dive simulator, a ventilation system for the pressure adjusting chamber, a ventilation temperature adjusting means for adjusting the temperature of air sent to the pressure adjusting chamber by the ventilation system, and the pressure. A room temperature sensor that can detect the internal temperature of the adjustment chamber, a sweat rate sensor that can detect the sweat rate of the diver housed in the pressure adjustment chamber, and the ventilation based on the detection signals of the room temperature sensor and the sweat rate sensor. A first rule antecedent section, which includes a control system for sending a control signal to the temperature adjusting means, the control system converting to a membership value set based on a detection signal from the room temperature sensor, and the sweat rate sensor. The second rule antecedent part for converting to the membership value set based on the detection signal from the above, and the conversion to the membership value set based on the change in the detection signal from the sweat rate detection sensor. Based on the output signals from the third rule antecedent part and the first, second and third rule antecedent parts, the membership value for the control signal to the ventilation temperature adjusting means is calculated by the inference table. A pressure adjusting chamber for a diving simulator, characterized by comprising a fuzzy inference part to be evaluated and a rule consequent part which defuzzifies the output signal from the fuzzy inference part and outputs the control signal based on this. Room temperature controller.