KR20160027906A

KR20160027906A - Air conditioning control apparatus and method

Info

Publication number: KR20160027906A
Application number: KR1020150115965A
Authority: KR
Inventors: 미츠히로 혼다
Original assignee: 아즈빌주식회사
Priority date: 2014-09-02
Filing date: 2015-08-18
Publication date: 2016-03-10
Also published as: CN105387556A; CN105387556B; JP6371640B2; JP2016050743A; KR101704915B1

Abstract

The purpose of the present invention is to accurately detect a person in a room, in a case when a background temperature has increased up to a surface temperature of a person. The present invention is provided with: a background temperature calculation unit (13) which calculates a background temperature related to a background area, which is a background of a person, from a thermal image; and an air conditioning controller (14) which compares a determination temperature (Tj) for determining whether forced air conditioning for a room (RM) is need or not with a background temperature (Tb) obtained from the background temperature calculation unit (13) and starts forced air conditioning to lower the background temperature (Tb) at the time where the background temperature (Tb) exceeds the determination temperature (Tj).

Description

TECHNICAL FIELD [0001] The present invention relates to an air conditioning control apparatus,

The present invention relates to an air conditioning control technique, and more particularly, to an air conditioning control technique for controlling the air conditioning of a room in accordance with the position of an occupant detected by a thermopile sensor array.

In a large-scale building such as a building, so-called "all-air-conditioning", which controls the air conditioning environment at any time and any place, regardless of the presence or absence of a person, was common. In recent years, however, air conditioning control technology for realizing energy saving has been introduced by detecting the position of the occupant in the room with the intention of energy saving becoming stronger, and stopping the air conditioning or illumination for the area without occupant.

Conventionally, as such an air conditioning control technology, for example, a thermometer (thermography) of a room is detected by a plurality of infrared sensors mounted on a wall or a ceiling, and a person area representing a surface temperature of a person is obtained from the obtained heat image, (Hereinafter referred to as " Patent Document 1 ") discloses a technique of controlling a room or a room with a passenger in a comfortable air-conditioning environment and stopping air conditioning or lighting for a room or area without occupancy.

[Patent Document 1] Japanese Unexamined Patent Application Publication No. 2012-057840

However, in this conventional technique, since the occupant is detected by searching the person area representing the surface temperature of the person from the thermal image of the room detected by the temperature sensor, There is a problem that when the temperature is close to the surface temperature of a person, the background and occupant can not be clearly distinguished. Particularly, the temperature of the floor or wall of a window is likely to rise in the summer, and may rise to a temperature which is rarely equal to the surface temperature of a person. Therefore, in such a situation that the background temperature rises, it becomes impossible to realize the optimum air conditioning control depending on the position / position of the occupant.

At this time, if the thermopile array sensor is used as the temperature sensor, the cost of the sensor itself can be reduced and the cost of the entire air conditioning control system can be reduced. However, since the pixels constituting the obtained thermal image are coarse and noise is large, . Therefore, in a situation where the background temperature rises, it becomes more difficult to distinguish the background from the occupant, and the occupant can not be accurately detected.

On the other hand, when an infrared radiation thermometer of the microbolometer type which is the current mainstream is used as a temperature sensor for detecting a thermal image, a thermal image with a small resolution can be obtained because of its high resolution. However, since the infrared radiation thermometer itself is expensive, can not avoid. In addition, since the frequency of occurrence of the above situation in a year is very small, it is inefficient to respond to such a rare case at a cost.

The object of the present invention is to provide an air conditioning control technique capable of accurately detecting the ash residue / member even when the background temperature rises up to a surface temperature of a person.

In order to achieve this object, an air conditioner control apparatus according to the present invention is characterized in that the air conditioner control apparatus according to the present invention is a control apparatus for controlling an air conditioner in a room based on a thermal image of the room generated from output data of a temperature sensor, An air conditioning control unit for performing air conditioning control of the room based on a result of the person detection obtained by the person detection unit; and a background temperature calculation unit for calculating a background temperature for a background area that is a background of a person from the thermal image Wherein the air conditioning control unit compares the background temperature with a judgment temperature for judging necessity and necessity for forced cooling of the room, and at a time point when the background temperature exceeds the judgment temperature, The forced cooling is started.

Further, an example of the air conditioning control device according to the present invention is characterized in that the human detection section searches for a person area representing a surface temperature of a person from the thermal image, and based on the search result, Precision human detection function for detecting a human being or a member of a human being based on the presence or absence of movement of a person area searched from each of the deteriorated images accumulated in a time series, Instructs the human detection unit to switch to the high-precision human detection function at a time point when the background temperature exceeds the determination temperature, and when the existence of a person is detected by the high-precision human detection function, To start.

Further, in an example configuration of the air conditioner control apparatus according to the present invention, when the background temperature exceeds the determination temperature and the entrance of a person to the room is notified from the outside, And forced cooling is started.

Further, in an example configuration of the air conditioner control apparatus according to the present invention, the air conditioner control section always performs partial cooling for lowering the background temperature in the vicinity of the room air inlet, The forced cooling is started when the presence of a person is detected.

In an exemplary configuration of the air conditioning control apparatus according to the present invention, the air conditioning control section partially cools an area in which the background temperature in the room exceeds the determination temperature as the forced cooling.

The air conditioning control method according to the present invention includes a person detecting step of detecting a member of a person in the room based on a thermal image of the room detected by a temperature sensor disposed in a room to be controlled, An air conditioning control step of performing air conditioning control of the room on the basis of the result of the person detection obtained in the person detecting step and a background temperature calculating step of calculating a background temperature of a background area which is a background of a person from the thermal image, Wherein the air conditioning control step compares the background temperature with a judgment temperature for judging necessity and necessity of forced cooling for the room so as to lower the background temperature at a time point when the background temperature exceeds the judgment temperature And to start forced cooling for cooling.

According to the present invention, the forced cooling is automatically started at a time when the background temperature exceeds the judgment temperature and it becomes difficult to distinguish between them, and the background temperature is lowered. Therefore, even when the background temperature rises to the vicinity of the surface temperature of a person, the background temperature is lowered due to forced cooling, so that it is easy to distinguish the two from each other. Therefore, as a result, it is possible to realize optimum air conditioning control depending on the location / location of the occupant.

1 is a block diagram showing a configuration of an air conditioner control apparatus according to a first embodiment;
2 is a flowchart showing the forced cooling need and unnecessary judgment processing according to the first embodiment.
Fig. 3 is a timing chart showing the necessity of forced cooling and the unnecessary judgment process according to the first embodiment; Fig.
Fig. 4 is a view showing the degradation in the background temperature rise. Fig.
Fig. 5 is a view showing the degradation process after the background temperature has dropped due to forced cooling. Fig.
6 is a flowchart showing a forced cooling need and an unnecessary judgment process according to the second embodiment;
7 is a timing chart showing the forced cooling need and unnecessary judgment processing according to the second embodiment.
8 is a flowchart showing the forced cooling need and unnecessary judgment processing according to the third embodiment.
9 is a timing chart showing the forced cooling need and unnecessary judgment processing according to the third embodiment.
10 is a flowchart showing the forced cooling need and unnecessary judgment processing according to the fourth embodiment.
11 is a timing chart showing the forced cooling need and unnecessary judgment processing according to the fourth embodiment.

Next, embodiments of the present invention will be described with reference to the drawings.

[First Embodiment]

First, with reference to Fig. 1, an air conditioner control apparatus 10 according to a first embodiment of the present invention will be described. 1 is a block diagram showing a configuration of an air conditioner control apparatus according to the first embodiment.

The air conditioner control apparatus 10 includes an information processing apparatus such as a server apparatus, a personal computer, and an industrial controller as a whole and is provided with a room RM (not shown) generated from output data of a temperature sensor disposed in a room RM to be controlled (RM) on the basis of the obtained person detection output, and controls the air conditioning of the room (RM) based on the obtained person detection output, For example, a lighting device installed in the main body RM.

The object of the present invention is to provide a method and a device for controlling a room RM in a case where a background temperature related to a background of a person or a background area of a wall in a thermal image used in such a person detecting function rises and becomes indistinguishable from a surface temperature of a person By cooling, the background temperature is lowered, which makes it easier to distinguish it from the surface temperature of people.

The air conditioning control apparatus 10 is provided with a thermal image generation section 11, a human detection section 12, a background temperature calculation section 13 and an air conditioning control section 14 as main functional sections.

The thermal image generating section 11 is connected to the temperature sensors S1 and S2 such as a thermopile array sensor disposed on the ceiling of each of the areas A1 and A2 of the room RM and on the wall, And acquires output data from these temperature sensors S1 and S2 and combines them to generate a thermal image across the room RM.

The person detection section 12 searches for a person area representing a person's surface temperature higher than the background temperature related to the background of the floor or the wall as the background of the person among the thermal images generated by the thermal image generation section 11 , And a function of detecting the presence / absence and position of a person in the room RM.

The background temperature calculation section 13 performs statistical processing such as averaging or representative value extraction for each pixel value constituting the thermal image with respect to the thermal image generated by the thermal image generation section 11, And has a function of calculating the background temperature of the background area of the floor or wall which is the background of the person.

As for the method for calculating the specific background temperature, for example, the background temperature may be obtained by performing statistical processing on the pixel values of all the regions constituting the thermal image. At this time, the background temperature may be obtained by performing statistical processing only on the pixel values excluding the pixel values belonging to the heating element area where the heating element such as the human area or the electronic device exists, from the pixel value to be subjected to the statistical processing. When the specific temperature rise region where the temperature rise such as the vicinity of the window is fixed, the background temperature may be obtained by performing statistical processing on only the pixel values belonging to the temperature rise region.

The air conditioning control unit 14 controls the air conditioners 21, 22, and 22 disposed in the ceilings of the areas A1 and A2 in accordance with the measurement inputs such as the indoor temperature and the outside air temperature of the areas A1 and A2, In addition to the general air conditioning control function for controlling the air conditioning environment of each of the areas A1 and A2 by remotely controlling the air conditioning units 20 and 23 or 24 and the air conditioning equipment 20 for supplying the air conditioning air to these air conditioning units via the communication line L2, The presence or absence of air conditioning control for each of the areas A1 and A2 as well as the facilities such as the lighting devices 31 and 32 installed in the respective areas A1 and A2 are detected in accordance with the human detection output from the human detection unit 12. [ And has a function of remotely controlling whether or not the device is driven through the communication line L3.

The air conditioning control unit 14 is a support function for characteristic person detection according to the present embodiment. The air conditioning control unit 14 includes a determination temperature Tj for determining necessity and necessity of forced cooling for the room RM, The background temperature Tb obtained in the calculation section 13 is compared with the background temperature Tb at the time point when the background temperature Tb exceeds the determination temperature Tj And instructs the air conditioner 21, 22, 23, 24, and hence the air conditioner 20 via the communication line L2.

[Operation of First Embodiment]

Next, the operation of the air conditioner control apparatus 10 according to the present embodiment will be described with reference to Figs. 2 and 3. Fig. Fig. 2 is a flowchart showing forced cooling and non-necessity determination processing according to the first embodiment. Fig. 3 is a timing chart showing the necessity of forced cooling and the unnecessary judgment process according to the first embodiment.

The air conditioning control apparatus 10 periodically acquires output data of the temperature sensors S1 and S2 to generate a thermal image in the thermal image generating section 11 and supports a human detection operation in the human detection section 12 , The forced cooling need of Fig. 2 and unnecessary judgment processing are executed.

First, the background temperature calculation unit 13 acquires a thermal image from the thermal image generation unit 11 (step 100), and statistically processes the pixel values constituting the thermal image, The background temperature Tb related to the background area of the background area is calculated (step 101).

Subsequently, the air conditioning control unit 14 compares the background temperature Tb calculated by the background temperature calculation unit 13 with a preset determination value for determining necessity and necessity of starting forced cooling for the room RM The temperature Tj is compared (step 102).

When the background temperature Tb is above the determination temperature Tj (step 102: YES), the air conditioning control unit 14 determines whether or not the start of forced cooling to lower the background temperature Tb (Step 103) through the communication line L2 to the air conditioners 21, 22, 23, and 24, and further to the air conditioning equipment 20, and ends the series of forced cooling and necessity determination processes.

On the other hand, when Tb < = Tj and the background temperature Tb exceeds the determination temperature Tj (step 102: NO), the air conditioning control section 14 does not instruct the start of forced cooling, The necessary and unnecessary determination processing is terminated.

Therefore, as shown in Fig. 3, when the background temperature Tb becomes larger than the judgment temperature Tj at the time t0, forced cooling for the room RM starts. Therefore, the floor or the wall of the room RM is cooled by forced cooling, and at the subsequent time t1, the background temperature Tb is lowered to the judgment temperature Tj or lower. As a result, the temperature difference between the background temperature and the surface temperature of the person becomes large enough in the thermal image, so that it becomes easy to distinguish between the background temperature and the surface temperature of the person.

At this time, as a specific example of the forced cooling, for example, a target temperature for forced cooling is set in advance by a certain temperature from the surface temperature of a person, and when forced cooling is performed, the target temperature of the room RM is set to the forced cooling target temperature There is a way. The target temperature for forced cooling is determined by the deviation of the measured values of the temperature sensors S1 and S2 and the allowable time until the temperature variation rate of the floor or wall of the room RM and the accurate person detection becomes possible It may be determined based on the parameter.

When the forced cooling is terminated, the air conditioning control unit 14 compares the background temperature Tb with the predetermined forced cooling stop temperature Ts, for example, at a time point when the temperature Tb has decreased to Ts (Tb < , The air conditioner (21, 22, 23, 24) or the air conditioner (20) may be instructed to stop the forced cooling.

Fig. 4 is a diagram showing a degradation phenomenon when the background temperature rises. Fig. 5 shows a degradation process after the background temperature has dropped due to forced cooling. Figs. 4 and 5 are diagrams showing examples in which the rectangular chamber RM to be controlled is divided into eight sections A1 to A8 of 2 x 4, and temperature sensors S1 to S8 are provided at the center of the ceiling of these sections And combines the thermal images of the sections A1 to A8 generated from the output data of these temperature sensors S1 to S8 into one.

4, a temperature rise can be observed in the vicinity of a window provided on the wall surface of the sections A1 and A2, and a background temperature equal to or higher than that of a person area located at the center of the room RM Respectively. In this situation, when the forced cooling is started, the thermal image is changed as shown in Fig. 5, and the background temperature in the vicinity of the window is lower than that in the human area. Thus, it becomes possible to easily distinguish the background temperature from the human area.

[Effects of the First Embodiment]

As described above, according to the present embodiment, the background temperature calculation section 13 for calculating the background temperature of the background area as the background of the person from the thermal image is provided, and the air conditioning control section 14 controls the air conditioning control section 14, The judgment temperature Tj for judging the necessity and necessity of forced cooling is compared with the background temperature Tb obtained in the background temperature calculation section 13 so that the background temperature Tb is higher than the judgment temperature Tj At the time point (Tb > Tj), forced cooling for lowering the background temperature Tb is started.

As a result, the forced cooling is automatically started at the time when the background temperature Tb exceeds the determination temperature Tj, and it becomes difficult to distinguish the two from each other, and the background temperature Tb is lowered. Therefore, even when the background temperature Tb rises to the vicinity of the surface temperature of a person, the background temperature Tb is lowered due to the forced cooling, so that it becomes easy to distinguish the two from each other, . As a result, it becomes possible to realize optimum air conditioning control depending on the position / absence or position of the occupant.

[Second Embodiment]

Next, an air conditioner control apparatus 10 according to a second embodiment of the present invention will be described with reference to Figs. 6 and 7. Fig. Fig. 6 is a flowchart showing the forced cooling need and unnecessary judgment processing according to the second embodiment. Fig. 7 is a timing chart showing the necessity of forced cooling and the unnecessary judgment process according to the second embodiment. Fig.

In the first embodiment, the case where forced cooling for lowering the background temperature Tb is started at a time point (Tb > Tj) when the background temperature Tb exceeds the determination temperature Tj has been described as an example. In this embodiment, at the time when Tb > Tj, the switching of the high-precision human detection processing is instructed to the human detection section 12, and when the presence of a person is detected by this highly accurate human detection processing, Will be described.

In the present embodiment, the human detection unit 12 has a low-precision human detection function for detecting a human region representing a surface temperature of a person from a thermal image, and detecting a human body / member based on the search result, And has a highly precise person detecting function for detecting the presence / absence of a person on the basis of the presence or absence of movement of the person area searched from each of the deteriorated images accumulated in a time series. For example, in the case where it is determined that a person is present when the human area has moved for one second, the thermal image generating unit 11 accumulates 10 thermal images generated every 0.1 sec, When the center position is calculated, it is possible to determine whether or not the human region has moved in one second.

The air conditioning control section 14 instructs the human detection section 12 to switch to the high precision human detection function instead of instructing the start of the forced cooling at the time when the background temperature Tb exceeds the judgment temperature Tj And a function of starting the forced cooling at the time when the presence of a person is detected by the high-precision person detecting function.

[Operation of Second Embodiment]

Next, the operation of the air conditioner control apparatus 10 according to the present embodiment will be described with reference to Figs. 6 and 7. Fig.

The air conditioning control apparatus 10 periodically acquires output data of the temperature sensors S1 and S2 to generate a thermal image in the thermal image generating section 11 and supports a human detection operation in the human detection section 12 , The forced cooling need of Fig. 6 and unnecessary judgment processing are executed.

First, the background temperature calculation section 13 acquires a thermal image from the thermal image generation section 11 (step 200) and statistically processes the pixel values constituting the thermal image, The background temperature Tb related to the background area of the background area is calculated (step 201).

Subsequently, the air conditioning control unit 14 compares the background temperature Tb calculated by the background temperature calculation unit 13 with a preset determination value for determining necessity and necessity of starting forced cooling for the room RM The temperature Tj is compared (step 202).

When the background temperature Tb is higher than the determination temperature Tj (step 202: YES), the air conditioning control section 14 causes the human detection section 12 to perform a high-precision human detection function (Step 203).

Thus, the human detection unit 12 detects the presence or absence of movement of the person area searched from each of the deteriorated images accumulated in the time series, using the high-precision human detection function, on the thermal image acquired from the thermal image generation unit 11 Based on the detected presence / absence of the person (step 204).

If the presence of a person is detected (step 205: YES), the air conditioning control unit 14 sets the start of forced cooling for lowering the background temperature Tb to the air conditioners 21, 22 , 23, 24), and further instructs the air conditioning equipment 20 (step 206) to complete a series of forced cooling and unnecessary determination processes.

On the other hand, if the background temperature Tb is equal to or lower than the determination temperature Tj (step 202: NO) and if the presence of a person is not detected (step 205: NO) , The air conditioning control section 14 does not instruct the start of forced cooling, and ends a series of forced cooling and unnecessary determination processing.

7, when the background temperature Tb becomes higher than the judgment temperature Tj at the time t0, the forced cooling for the room RM is not started but the forced cooling for the room RM is started The forced cooling of the room RM is started when the switching to the high precision person detecting function is instructed and the presence of the person is confirmed by the high precision person detecting function at the subsequent time t1.

Thereby, the floor or wall of the room RM is cooled by forced cooling, and at the subsequent time t2, the background temperature Tb is lowered to the judgment temperature Tj or lower. Therefore, the temperature difference between the background temperature and the surface temperature of the person in the thermal image becomes sufficiently large, and it becomes easy to distinguish between the background temperature and the surface temperature of the person, so that it is possible to accurately detect the ashes / members of the occupant.

[Effects of Second Embodiment]

As described above, in this embodiment, the air conditioning control unit 14 instructs the human detection unit 12 to switch to the high-precision human detection function when the background temperature Tb exceeds the determination temperature Tj, And the forced cooling is started when the presence of a person is detected by the highly accurate human detection function.

At this time, since the high-precision person detecting function is a person detecting using a plurality of thermal images, the time required for detection is longer than that of the low-precision detecting function, but when the background temperature Tb is only slightly different from the surface temperature of the person It is possible to accurately determine the presence / absence of a person.

Therefore, when the background temperature Tb exceeds the judgment temperature Tj, the forced air conditioning is started for the first time when the presence of a person is confirmed, and when the presence of a person can not be confirmed, the start of the forced air conditioning is suspended do. Therefore, as compared with the case where the forced air conditioning is started at the time when the background temperature Tb exceeds the determination temperature Tj as in the first embodiment, the forced air conditioning can be started only when the presence of a person is confirmed , It is possible to avoid the waste to perform the forced air conditioning despite the absence of the person in the room RM.

[Third embodiment]

Next, an air conditioner control apparatus 10 according to a third embodiment of the present invention will be described with reference to Figs. 8 and 9. Fig. Fig. 8 is a flowchart showing the necessity of forced cooling and the unnecessary judgment process according to the third embodiment. Fig. 9 is a timing chart showing the necessity of forced cooling and the unnecessary judgment process according to the third embodiment.

In the first embodiment, the case where forced cooling for lowering the background temperature Tb is started at a time point (Tb > Tj) when the background temperature Tb exceeds the determination temperature Tj has been described as an example. In the present embodiment, the case where Tb > Tj and the forced cooling is started when the entrance of the person to the room RM is notified from the outside will be described.

In the present embodiment, the air conditioning control device 10 is provided with an air conditioner control system 10 that receives a person's entry into the room RM from an entry / exit management system (not shown) that manages entrance / exit of a person in the room RM It is presupposed that it is notified. This entry / exit management system determines, for example, whether or not the room RM can be entered based on the user information read from the user's ID card at the card terminal installed at the entrance of the room RM, It is a general system that opens the electric lock of the entrance door.

The air conditioning control unit 14 has a function of starting forced cooling when the background temperature is higher than the judgment temperature and the person's entry into the room RM is notified from the outside.

[Operation of Third Embodiment]

Next, the operation of the air conditioning control apparatus 10 according to the present embodiment will be described with reference to Figs. 8 and 9. Fig.

The air conditioning control apparatus 10 periodically acquires output data of the temperature sensors S1 and S2 to generate a thermal image in the thermal image generating section 11 and supports a human detection operation in the human detection section 12 The forced cooling need of Fig. 8 and unnecessary judgment processing are executed.

First, the background temperature calculation unit 13 acquires a thermal image from the thermal image generation unit 11 (step 300) and statistically processes the pixel values constituting the thermal image, The background temperature Tb related to the background area of the background area is calculated (step 301).

Subsequently, the air conditioning control unit 14 compares the background temperature Tb calculated by the background temperature calculation unit 13 with a preset determination value for determining necessity and necessity of starting forced cooling for the room RM The temperature Tj is compared (step 302).

When the background temperature Tb exceeds the determination temperature Tj (step 302: YES), the air conditioning control unit 14 notifies the reception of the person from the outside to the room RM (Step 303).

When the entrance of a person from the outside to the room RM is notified (step 303: YES), the air conditioning control section 14 sets the start of forced cooling for lowering the background temperature Tb to the communication line L2, to the air conditioners 21, 22, 23, 24, and then to the air conditioning equipment 20 (step 304), and ends a series of forced cooling and unnecessary determination processes.

On the other hand, if it is determined in step 302 that the background temperature Tb is equal to or lower than the determination temperature Tj (step 302: NO) and if the person is not notified in step 303 (step 303: NO ), The air conditioning control section 14 does not instruct the start of forced cooling, and ends the series of forced cooling and the unnecessary determination process.

Therefore, as shown in Fig. 9, when the background temperature Tb becomes higher than the judgment temperature Tj at the time t0, the forced cooling for the room RM is not started, but at the subsequent time t1, When the person is notified of the entry into the room RM, forced cooling of the room RM is started.

[Effects of the Third Embodiment]

As described above, in the present embodiment, when the air conditioning control unit 14 determines that the background temperature Tb exceeds the determination temperature Tj and the person's entry into the room RM is notified from the outside, And to start cooling.

Therefore, when the background temperature Tb is higher than the judgment temperature Tj, the forced air conditioning is started for the first time when the presence of a person is confirmed by the external notification, and when the presence of a person can not be confirmed, The start of the service is reserved. Therefore, as in the first embodiment, the forced air conditioning can be started only when the presence of a person is confirmed, as compared with the case where the forced air conditioning is started at the time when the background temperature Tb exceeds the determination temperature Tj , It is possible to avoid the waste to perform the forced air conditioning despite the absence of the person in the room RM.

[Fourth Embodiment]

Next, an air conditioning control device 10 according to a fourth embodiment of the present invention will be described with reference to Figs. 10 and 11. Fig. Fig. 10 is a flowchart showing the forced cooling need and unnecessary judgment processing according to the fourth embodiment. 11 is a timing chart showing forced cooling and unnecessary judgment processing according to the fourth embodiment.

In the first embodiment, the case where forced cooling for lowering the background temperature Tb is started at a time point (Tb > Tj) when the background temperature Tb exceeds the determination temperature Tj has been described as an example. In the present embodiment, a case in which partial cooling for lowering the background temperature in the vicinity of the room RM is always performed, and forced cooling is started at the time when the presence of a person is detected near the entrance will be described.

The present embodiment is characterized in that the air conditioning control section 14 has a function of always performing partial cooling for lowering the background temperature in the vicinity of the entrance of the room RM and a function of controlling the presence of a person And the forced cooling is started at the point of time when it is detected.

[Operation of Fourth Embodiment]

Next, the operation of the air conditioning control apparatus 10 according to the present embodiment will be described with reference to Figs. 10 and 11. Fig.

The air conditioning control apparatus 10 periodically acquires output data of the temperature sensors S1 and S2 to generate a thermal image in the thermal image generating section 11 and supports a human detection operation in the human detection section 12 The forced cooling need of Fig. 10 and unnecessary judgment processing are executed. At this time, it is assumed that the air conditioning control unit 14 always performs partial cooling in order to lower the background temperature in the vicinity of the entrance to the room RM in advance.

First, the person detecting unit 12 obtains a thermal image generated by the thermal image generating unit 11 (step 400), and performs a process of detecting a floor or a wall of the person's background (Step 401) by detecting a person's presence / position in the room RM by searching for a person area indicating a person's surface temperature higher than the background temperature related to the background area.

Accordingly, the air conditioning control unit 14 confirms whether or not the presence of a person is detected near the entrance of the room RM based on the detection result obtained by the human detection unit 12 (step 402).

When the presence of a person is detected in the vicinity of the entrance of the room RM (step 402: YES), the air conditioning control unit 14 sets the start of forced cooling for lowering the background temperature Tb to the communication line L2 (Step 403), and terminates the series of forced cooling and necessity determination processing. [0051] In step 403, the air conditioning system 21, 22, 23, 24,

On the other hand, when the presence of a person is not detected in the vicinity of the entrance of the room RM (step 402: NO), the air conditioning control section 14 does not instruct the start of forced cooling, Lt; / RTI >

Therefore, as shown in Fig. 11, forced cooling for the room RM is started at the time t0 when the presence of a person is detected near the entrance of the room RM.

Thereby, the floor or wall of the room RM is cooled by forced cooling, and at the time t1 thereafter, the background temperature Tb falls below the judgment temperature Tj. Therefore, the temperature difference between the background temperature and the surface temperature of the person in the thermal image becomes sufficiently large, and it becomes easy to distinguish between the background temperature and the surface temperature of the person, so that it is possible to accurately detect the ashes / members of the occupant.

[Effects of Fourth Embodiment]

As described above, according to the present embodiment, the air conditioning control unit 14 always performs partial cooling to lower the background temperature in the vicinity of the entrance to the room RM, and the presence of a person The forced cooling is started.

Thus, since the background temperature Tb is always lowered in the vicinity of the entrance, there is always a temperature difference from the surface temperature of the person, and the human being / member is accurately detected by the person detecting unit 12. [ Therefore, the forced cooling of the entire room RM is started at the point of time when the presence of a person is confirmed near the entrance, so that it is possible to avoid the waste to perform the forced air conditioning despite the absence of a person in the room RM .

[Expansion of Embodiment]

The present invention has been described above with reference to the embodiments, but the present invention is not limited to the above embodiments. Various changes and modifications can be made by those skilled in the art without departing from the scope of the present invention. In addition, the embodiments can be arbitrarily combined in a range that does not contradict each other.

A1, A2: Zone 10: air conditioning control device
11: thermal image generation unit 12: human detection unit
13: background temperature calculation unit 14: air conditioning control unit
20: air conditioning equipment 21, 22, 23, 24: air conditioning equipment
31, 32: Lighting device S1, S2: Temperature sensor
RM: room L1, L2, L3: communication line

Claims

A person detecting unit for detecting the ashes of the person in the room based on the thermal image of the room generated from the output data of the temperature sensor disposed in the room to be controlled,
An air conditioning control section for performing air conditioning control of the room based on the result of the person detection obtained by the person detecting section;
And a background temperature calculation unit for calculating a background temperature related to a background area that is a human background from the thermal image,
Wherein the air conditioning control unit compares the background temperature with a judgment temperature for judging necessity and necessity of forced cooling for the room and compares the background temperature with the background temperature so as to lower the background temperature And forcibly cooling is started.

The method according to claim 1,
Wherein the person detecting unit includes a low precision person detecting function of searching for a person area representing the surface temperature of a person from the thermal image and detecting the presence / absence of a person on the basis of the search result, And has a highly precise person detecting function for detecting the presence / absence of a person on the basis of the presence /
The air conditioning control unit instructs the human detection unit to switch to the high precision human detection function at a time point when the background temperature exceeds the determination temperature and when the existence of a person is detected by the high precision human detection function And the forced cooling is started at a point of time when the forced cooling is started.

3. The method according to claim 1 or 2,
Wherein the air conditioning control unit starts the forced cooling when the background temperature is higher than the determination temperature and a person's entrance to the room is notified from the outside.

3. The method according to claim 1 or 2,
Wherein the air conditioning control unit always performs partial cooling for lowering the background temperature in the vicinity of the room entrance and starts the forced cooling when the presence of a person is detected by the person detecting unit in the vicinity of the entrance The air conditioning control device characterized by:

3. The method according to claim 1 or 2,
Wherein the air conditioning control unit partially cools the area where the background temperature in the room is higher than the determination temperature as the forced cooling.

A person detecting step of detecting a human being in the room based on a thermal image of the room detected by a temperature sensor disposed in a room to be controlled;
An air conditioning control step of performing air conditioning control of the room based on the result of the person detection obtained in the person detecting step,
And a background temperature calculating step of calculating a background temperature related to a background area that is a human background from the thermal image,
Wherein the air conditioning control step compares the background temperature with a judgment temperature for judging necessity and necessity of forced cooling for the room so as to lower the background temperature at a time point when the background temperature exceeds the judgment temperature And the forced cooling is started.