TWI401401B - Apparatus and method for controlling flow and thermal condition - Google Patents

Description

Heat flow situation control device and method

The present disclosure relates to a control device and method for a heat flow scenario.

In response to the advent of the era of high-tech information, today's buildings have gradually adopted intelligent and automated technologies, and situational control is part of the current smart building. However, current situational control techniques mostly focus on the fidelity of lighting, sound or image, but do not consider the control of the heat flow environment. However, today's control technologies for heat flow environments focus on adjusting the air flow rate and room temperature to maintain the thermal comfort experienced by people (ie, maintaining a PMV value near zero). Therefore, the current heat flow environment control technology is not suitable for the heat flow control requirements of various immersive environments in smart environment control systems such as smart buildings or situational immersive games.

The disclosure relates to a heat flow situation control device and method, which can quickly control the temperature and airflow of the environment by using a simplified thermal comfort function and contextual instructions in different scenarios to achieve an instant and immersive intelligent environment control effect. .

According to a first aspect of the present disclosure, a control device for a heat flow scenario is provided, comprising a controller, a cold air source, a valve member, a heater, and a gas supply device. The controller is used to define a simplified thermal comfort function that simplifies the assignable parameters of the thermal comfort function including a thermal comfort, an air temperature, and a wind speed. The controller sets a preset thermal comfort and a preset wind speed according to a situational instruction, and obtains a desired air temperature according to the simplified thermal comfort function, the preset thermal comfort, and the preset wind speed. A cold air source is used to provide a cool air. A valve member is used to control the controller to control the flow of cold air. The valve member is coupled to the air supply device and is controlled by the controller for supplying cold air. The heater is used to control the controller to heat the cold air to the air that reaches the desired air temperature. The air supply device is configured to control the air that is sent from the air supply device to the desired air temperature at a preset wind speed.

According to a second aspect of the present disclosure, a method for controlling a heat flow scenario is provided, comprising the following steps. A simplification of the thermal comfort function is defined, and the assignable parameters that simplify the thermal comfort function include a thermal comfort, an air temperature, and a wind speed. A preset thermal comfort and a preset wind speed are set according to a situational command. A desired air temperature is obtained based on a simplified thermal comfort function, preset thermal comfort, and preset wind speed. A heater is controlled to heat a cold air to the air that reaches the desired air temperature.

In order to make the above content of the present disclosure more obvious and understandable, a preferred embodiment will be described below, and in conjunction with the drawings, a detailed description is as follows:

The present disclosure proposes a heat flow situation control device and method. By simplifying the thermal comfort function and matching the situational instructions in different scenarios, the desired air temperature and the preset wind speed can be quickly obtained to control the temperature and airflow of the environment, and the instant and The immersive wisdom of environmental control effects.

Please refer to FIG. 1 , which is a flow chart of a method for controlling a heat flow condition according to a preferred embodiment of the present disclosure. It is important to understand that the Predicted Mean Vote (PMV) is an indicator for the determination of a warm and enthusiastic environment under the ISO 7730 specification. The PMV is between -3 and 3. Different PMVs represent different hot and cold environments, such as -3 for cold, -2 for cool, -1 for slightly cool, 0 for neutral, and 1 for slightly warm (slightly Warm), 2 stands for warm and 3 stands for hot.

The detailed formula for thermal comfort PMV is as follows:

Among them, M is the basal metabolic rate, W is the external effective work, I _cl is the clothing thermal barrier, f _cl is the clothing surface area, t _a is the air temperature, For the average radiant temperature, _Var is the wind speed, P _a is the humidity, h _c is the convective heat transfer coefficient, and t _cl is the clothing surface temperature. Since the formula of the thermal comfort PMV of the conventional ISO 7730 specification is too complicated and non-linear, it is difficult to implement the application and the cost of the multiple sensors required is too high. Therefore, in the present embodiment, for simplicity, in step S100, a simplified thermal comfort function is defined, and the assignable parameter of the simplified thermal comfort function includes a thermal comfort (PMV) and an air temperature (t _a ). And a wind speed (V _ar ). In addition, the simplified thermal comfort function further includes a humidity (P _a ).

The traditional thermal comfort PMV formula is mainly influenced by four environmental parameters (air temperature, humidity, average radiant temperature and wind speed) and two individuals due to parameters (clothing volume and activity). It is assumed that the average radiant temperature is the same as the air temperature, and the clothing quantity and activity amount of the human factor parameter are regarded as constant values, and the humidity system can be measured by a humidity sensor. In this way, a simplified thermal comfort function PMV=f(t _a , v _ar ) can be obtained. Among them, the thermal comfort PMV, the air temperature t _a and the wind speed v _ar are variables, and parameters can also be assigned.

Please refer to FIG. 2, which is a schematic diagram of a control device for a heat flow scenario in accordance with a preferred embodiment of the present disclosure. The heat flow situation control device 200 includes a controller 210, a cold air source 220, a valve member 230, a heater 240, a gas supply device 250, a humidity sensor 260, and a feedback sensor 270. The controller 210 is, for example, a microprocessor. In step S100, the controller 210 defines a simplified thermal comfort function PMV=f(t _a , v _ar ).

Then, in step S110, the controller 210 sets a preset thermal comfort and a preset wind speed according to a situational instruction. The context command is, for example, from a multimedia device or other device that can provide a sound and light effect, but is not limited. More specifically, unlike conventional air conditioning systems, which want to maintain the PMV near zero, the range of preset thermal comfort ranges from -3 to 3. For example, if the context command accepted by the controller 210 is a contextual command regarding the desert, the preset thermal comfort may be set to 3; similarly, if the context command accepted by the controller 210 is a contextual instruction regarding the Arctic , the preset thermal comfort can be set to -3. Similarly, the preset wind speed is also related to the contextual order. In fact, the wind speed in this embodiment is the wind level representation, and the wind level can refer to the internationally used Beaufort Scale.

In step S120, the controller 210 obtains a desired air temperature according to the simplified thermal comfort function, the preset thermal comfort, and the preset wind speed. Among them, the humidity in the simplified thermal comfort function is measured by the humidity sensor 260. Step S120 represents that if the current heat flow environment is preset thermal comfort, preset wind speed, and desired air temperature, the current heat flow environment is a heat flow environment corresponding to the context command. Further, the quantitative control of the human body experience can be performed through a plurality of human factors experiments, and the above various parameters are sorted to obtain a look-up table for reference by the controller 210 to improve the working efficiency of the controller 210. Please refer to Table 1, which is an example of a comparison table of various parameters of the present embodiment.

In addition, if it is assumed that the preset thermal comfort includes 7 levels of the integers in the range of -3 to 3, and the preset wind speed is 13 levels in the partial Beaufort wind level table, the heat flow situation control device 200 provided in this embodiment Can handle at least 91 situational instructions. With the further subdivision of the level, it can correspond to more situational instructions, and is more suitable for the current heat flow control requirements of various immersive environments.

In the heat flow scenario control device 200, the cold air source 220 provides a cool air. Valve member 230 controls the flow of cold air. In step S130, the controller 210 controls the power of the heater 240 to heat the cold air to the end of the period. Look at the air temperature of the air. In step S140, the air supply device 250 is, for example, a fan. The valve member 230 is coupled to the air supply device 250 and controlled by the controller 210 to send air from the air supply device 250 to a desired air temperature at a preset wind speed. In this way, the hot flow scenario control device 200 can provide a hot flow environment corresponding to the context command received by the controller 210.

In addition, the heat flow situation control device 200 can further measure the air temperature near the air outlet 255 of the air supply device 250 by using the feedback sensor 270, and feed back the measured air temperature to the controller 210 to determine whether the temperature is accurately reached. Preset thermal comfort. If there is a slight error value, the controller 210 can control the heater 240 or the air supply device 250 to perform fine adjustment correction so that the current heat flow environment can be more in line with the heat flow environment corresponding to the context command.

The apparatus and method for controlling the heat flow situation disclosed in the above embodiments have a plurality of advantages. The following only some of the advantages are described as follows: The heat flow situation control device and method of the present disclosure are simplified by a simplified thermal comfort function. The situational instructions in the scene can set the preset thermal comfort and the preset wind speed, and quickly obtain the desired air temperature, so that the temperature and airflow of the environment can be quickly controlled to achieve an instant and realistic intelligent heat flow environment control effect. Furthermore, the result of feedback sensor measurement is used as the basis of feedback control to improve the realistic effect of the heat flow environment.

In the above, the disclosure has been disclosed in a preferred embodiment, and is not intended to limit the disclosure. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the disclosure. Therefore, the scope of protection of this disclosure is subject to the definition of the scope of the appended claims.

200‧‧‧Control device for heat flow scenarios

210‧‧‧ Controller

220‧‧‧ cold air source

230‧‧‧ valve parts

240‧‧‧heater

250‧‧‧ gas supply

255‧‧‧air outlet

260‧‧‧Humidity sensor

270‧‧‧Feedback sensor

S100, S110, S120, S130, S140‧‧ steps

FIG. 1 is a flow chart showing a control method of a heat flow condition according to a preferred embodiment of the present disclosure.

2 is a schematic diagram of a control device for a heat flow scenario in accordance with a preferred embodiment of the present disclosure.

Claims (9)

A control device for a heat flow scenario, comprising: a controller for defining a simplified thermal comfort function, the assignable parameters of the simplified thermal comfort function comprising a thermal comfort, an air temperature, and a wind speed, wherein the controller Setting a preset thermal comfort and a preset wind speed according to a situational instruction, and obtaining a desired air temperature according to the simplified thermal comfort function, the preset thermal comfort, and the preset wind speed; a cold air source for providing a cold air; a valve member for controlling the flow of the cold air by the controller; a heater for controlling the controller to heat the cold air to the air at the desired air temperature And a gas supply device for controlling the controller to send air from the air supply device to the desired air temperature at the preset wind speed; wherein the context command is from a multimedia device. The control device of the heat flow scenario according to claim 1, wherein the preset thermal comfort ranges from -3 to 3. The control device of the heat flow scenario of claim 1, further comprising: a feedback sensor for measuring the air temperature of the air outlet of the air supply device, and feeding back to the controller to control the heater Or the gas supply device. The control device of the heat flow scenario of claim 1, wherein the simplified thermal comfort function further comprises a humidity, the control device further comprising: a humidity sensor for measuring the air outlet of the air supply device Humidity. A method for controlling a heat flow scenario, comprising: defining a simplified thermal comfort function, the assignable parameters of the simplified thermal comfort function comprising a thermal comfort, an air temperature, and a wind speed; setting a predetermined thermal comfort according to a contextual command Degree and a preset wind speed; obtaining a desired air temperature according to the simplified thermal comfort function, the preset thermal comfort and the preset wind speed; and controlling a heater to heat a cold air to reach the desired air temperature Air; wherein the contextual instruction is from a multimedia device. The method for controlling a heat flow situation according to claim 5, wherein the preset thermal comfort ranges from -3 to 3. The method for controlling a heat flow situation according to claim 5, further comprising: controlling a valve member and a gas supply device to send air from the air supply device to the desired air temperature at the preset wind speed. The method for controlling a heat flow situation according to claim 7 further includes: measuring an air temperature of the air outlet of the air supply device to feedback the heater or the valve member or the air supply device. The method for controlling a heat flow situation according to claim 7, wherein the simplified thermal comfort function further comprises a humidity, and the control method further measures the humidity of the air outlet of the air supply device.