JP5320361B2 - Air conditioner - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an air conditioner saving electricity while considering amenity. <P>SOLUTION: The air conditioner includes an infrared sensor for detecting a movement amount of a person in a room, a sound sensor for detecting indoor sound, a setting section for setting indoor set temperature, and a control section for controlling operation. The air conditioner includes an activity amount determination section for determining an activity amount of the person in the room according to the detection result of the infrared sensor and a kind of a sound source determined based on the detection result of the sound sensor. A target value defined based on the set temperature is changed based on the determined activity amount of the person in the room determined by the activity amount determination section. This invention can provide the air conditioner saving electricity while considering amenity. <P>COPYRIGHT: (C)2012,JPO&amp;INPIT

Description

  The present invention relates to energy-saving operation control of an air conditioner.

  An air conditioner adjusts the indoor environment by blowing air heated, cooled, or dehumidified by a heat exchanger into a room using a fan. In recent years, there is a strong demand for energy-saving operation for air conditioners from the viewpoint of preventing global warming. Therefore, operation control of an air conditioner that uses various sensors to perform energy-saving operation while considering comfort has been proposed.

  Patent Document 1 is equipped with a sensor that takes in any one of temperature, humidity, radiation temperature, air volume, wind direction, visible light, infrared light, sound, time, and calendar, and the user's intention, activity, metabolism, and clothing A pattern classification device, an environment recognition device, and an air conditioner that learn any of the above information and perform air conditioning are disclosed.

  Patent Document 2 includes a sound sensor. When the amount of change in sound is large, it is determined that human activity is active, and when the amount of change in sound is small, it is determined that human activity is low. An air conditioner to be changed is disclosed.

  Patent Document 3 memorizes comfortable temperature and humidity according to the amount of activity, season, time, and weather conditions of the occupant, and estimates the amount of activity of the occupant with visual information recognition means, thereby ensuring a comfortable temperature in the room. Disclosed is an air conditioner using active mass sensing controlled to humidity.

  Patent Document 4 has a calendar function for obtaining the month, day of the week, and time, extracts the number, position, posture, and movement of the occupants from the thermal image, and changes the life scene according to the use set by the room use setting means. Disclosed are a living scene estimation device and an air conditioner for estimating the absence, sleep, group, learning, relaxation, active housework, getting up, going to bed, entering the room, leaving the room.

  Patent Document 5 has a calendar function for obtaining the month, day of the week, and time, extracts the number, position, posture, and movement of the occupants from the thermal image, and changes the life scene according to the use set by the room use setting means. A life scene estimation apparatus and an air conditioner for estimating a state life scene of absence, sleep, group, learning, relaxation, active housework or state change life scene of getting up, sleeping, entering a room, leaving a room are disclosed.

  However, Patent Document 1 does not disclose a specific processing procedure for sound information. Further, the metabolic rate is changed based on the user's intention display. In Patent Document 2, it is difficult to accurately determine whether or not a person is moving because whether or not a person's activity is active is determined only by the amount of change in sound and the type of sound is not determined. Patent Documents 3 to 5 do not disclose sound information, and therefore do not disclose the use of sound information for activity amount estimation.

JP-A-6-60049 JP-A-5-172380 JP-A-4-121542 Japanese Patent Laid-Open No. 5-118612 Japanese Patent Laid-Open No. 5-118613

  An object of the present invention is to provide an air conditioner that saves power while considering comfort.

  An air conditioner according to the present invention includes an infrared sensor that detects the amount of movement of a room occupant, a sound sensor that detects indoor sounds, a setting unit that sets indoor temperature settings, and a control unit that controls operation. An activity amount determination unit that determines the amount of activity of the occupant according to the detection result of the infrared sensor and the detection result of the sound sensor, and the activity determination amount of the occupant determined by the activity amount determination unit Based on the set temperature, the target value determined based on the set temperature is changed.

  According to the present invention, it is possible to provide an air conditioner that saves power while considering comfort.

The block diagram of an air conditioner. Sectional drawing of an air conditioner indoor unit. The front view of an indoor unit. The figure which shows the relationship between activity content and activity amount. The control part block diagram of an indoor unit. Example 1 of frequency analysis of room sound. Example 2 of frequency analysis of room sound. Sound source determination block diagram. Explanatory drawing before primary determination. Primary determination main part explanatory drawing. The principal part flowchart of primary determination. Secondary determination explanatory drawing. The principal part flowchart of a secondary determination. Correction explanatory drawing by ambient sound. Correction explanatory drawing by ambient sound. Reaction detection classification determination explanatory drawing. Combination activity amount determination diagram. Activity amount determination explanatory drawing. Example of temperature shift value. Radiation amount determination explanatory drawing.

  Hereinafter, an air conditioner according to the present invention will be described by taking a wall-mounted air conditioner as an example. First, the whole structure of an air conditioner is demonstrated using FIGS. 1-3. FIG. 1 is a configuration diagram of an air conditioner. FIG. 2 is a cross-sectional view of the air conditioner indoor unit. FIG. 3 is a front view of the indoor unit.

  An air conditioner 1 shown in FIG. 1 is configured by connecting an indoor unit 2 and an outdoor unit 3 with a connection pipe 4. The indoor unit 2 includes an indoor transmission / reception unit 16 that receives an infrared operation signal from a separate remote controller (hereinafter referred to as “remote controller”) 5.

  As shown in FIG. 2, the indoor unit 2 includes a heat exchanger 7 at the center of the housing base 6. A cross flow fan type indoor blower 8 having a length substantially equal to the width of the heat exchanger 7 is disposed downstream of the air flow of the heat exchanger 7. A dew tray 9 is disposed below the heat exchanger 7. The heat exchanger 7 and the indoor blower 8 are covered with a decorative frame 10, and a front panel 11 is attached to the front surface of the decorative frame 10.

  Above the indoor unit 2, an air inlet 12 for sucking room air is provided. Below the indoor unit 2, an air outlet 13 that blows out air with adjusted temperature and humidity is provided. The indoor air sucked from the air suction port 12 by the indoor blower 8 flows through the heat exchanger 7 and the indoor blower 8 into the blowout air passage 8 a having a width substantially equal to the length of the indoor blower 8. Thereafter, the air in the blowout air passage 8a is deflected in the left-right direction by the left and right airflow direction plates 14 located in the blowout airway 8a, and the vertical direction is deflected by the up-and-down airflow direction plate 15 located in the air blowout port 13. 13 is blown into the room.

  A pyroelectric infrared sensor 17, a radiation sensor 18 using a thermopile, and a sound sensor 19 using a microphone or the like are mounted in the back of the vertical wind direction plate 15.

  Next, a method for subdividing and detecting the amount of activity of a room occupant by combining a pyroelectric infrared sensor and a sound sensor will be described with reference to FIGS. In the present embodiment, a pyroelectric infrared sensor and a sound sensor are combined to further subdivide the activities of the occupants and further save energy while considering the comfort of the occupants.

  The amount of activity of a resident is detected using a pyroelectric infrared sensor. If the amount of activity is large, the room temperature is adjusted to be lower, and if the amount of activity is small, the occupant is adjusted to a higher room temperature. Energy-saving operation can be performed while considering the comfort of the car. However, using only a pyroelectric infrared sensor to classify the amount of activity of the occupants in multiple stages is due to the fact that the sensitivity of the sensor becomes dull with respect to detection errors and movement in the direction toward the sensor. It is necessary to increase the number of devices, which increases the cost.

  FIG. 4 shows the relationship between the activity content and the activity amount. MET is used as a unit representing the amount of human activity, and shows the activity content and the MET value corresponding to the activity content. The left column of FIG. 4 shows an example of activity amount classification when only one pyroelectric infrared sensor is used. In this way, when only one pyroelectric infrared sensor is used, the activity amount is divided into three categories of large, medium, and small even if it can be subdivided. Even if it is further subdivided, the accuracy is low for the reasons described above. The right column of FIG. 4 shows an example of classification of activity amounts according to the method of the present invention. According to the present invention, since the amount of activity can be further subdivided, further energy-saving operation can be performed while considering comfort by air conditioning according to the amount of activity of the occupants. The method for classifying the active mass according to the present invention will be described later.

  Next, an outline of control of the air conditioner of the present invention will be described with reference to FIG. FIG. 5 is a block diagram of the control unit of the indoor unit.

  In FIG. 5, the air conditioner 1 includes a control unit 20 inside, and controls the indoor unit 2 and the outdoor unit 3 in accordance with information from various sensors and instructions from the remote controller 5. Information from the room 900 is obtained from a microcomputer (see FIG. 5) by a room temperature sensor 25, a humidity sensor 26, a radiation sensor 18, a remote control ambient temperature sensor 27, a remote control position sensor 28, a pyroelectric infrared sensor 17, a sound sensor 19, and the like. (Not shown). The air conditioner 1 is controlled based on the information captured by these microcomputers.

  From the information of the pyroelectric infrared sensor 17 and the sound sensor 19, the activity amount determination unit 35 classifies the activity amount of the occupants in multiple stages as illustrated in the right column of FIG. Tell to 36.

  The temperature shift value setting unit 36 calculates a temperature shift value based on information from the calendar function 29 provided in the various sensors and the control unit 20 in addition to the activity amount information from the activity amount determination unit 35, Tell the target room temperature setting unit 37.

  The target room temperature setting unit 37 calculates the target room temperature based on the temperature shift value information from the temperature shift value setting unit 36 and the set room temperature information from the room temperature setting unit 38 and transmits the target room temperature to the air conditioning capability control unit 45.

  The air conditioning capacity control unit 45 sets the compressor rotation speed setting unit 46, the indoor fan rotation speed setting unit 47, and the outdoor fan rotation speed setting based on the target room temperature from the target room temperature setting unit 37, the intake air temperature information from the room temperature sensor 25, and the like. The compressor 48, the indoor fan rotation speed, and the outdoor fan rotation speed are set by the unit 48, and the compressor, the indoor fan 8, and the outdoor fan 56 are controlled.

  The heating capacity and cooling capacity of the air conditioner are controlled based on the intake air temperature and the set temperature of the air conditioner. However, in general, the intake air temperature of an air conditioner installed at a high place in the room is higher than the temperature of the living space from the floor in the room where the user is located to the height of the face. Therefore, in order to correct this temperature difference, the air conditioning is performed so that the intake air temperature approaches the additional set temperature (target temperature), with the set temperature obtained by adding a predetermined value (temperature shift value) to the set temperature as the target temperature. Control the machine. The predetermined value is about -1 to 5 degrees, although it varies depending on the structure of the air conditioner and the operation mode (heating / cooling / dehumidification).

  Air conditioners maintain comfort by controlling indoor temperature (and humidity). Human thermal sensation is affected by temperature, humidity, airflow, radiation, clothing and activity. If the behavior of a person in the room changes, the thermal sensation of the person changes even if the conditions such as humidity, airflow, radiation, and amount of clothes are the same. Therefore, in order to maintain comfort, it is necessary to change temperature (and humidity) etc. according to the action of the person.

  Information on the amount of activity of the occupants can be obtained from the human detection function of the air conditioner. The comfort of the occupants can be maintained by changing the room temperature in accordance with the information on the amount of activity of the occupants. In a home air conditioner, a pyroelectric infrared sensor is employed as a human detection function for detecting the movement of a room occupant.

  The pyroelectric infrared sensor is a sensor using a pyroelectric effect in which a crystal or resin having a large dielectric constant generates a charge due to a temperature change, and can detect infrared rays emitted from a person without contact. A person's movement can be detected by installing a Fresnel lens in front of the pyroelectric infrared sensor and intermittently inputting infrared light into the sensor. Therefore, when human detection is performed using only the pyroelectric infrared sensor, when the occupant moves, the output of the sensor changes to detect that the occupant has moved. On the other hand, when there is no movement in the occupant, the sensor output does not change, and therefore it is detected that there is no movement in the occupant.

  However, it is not possible to determine how much activity the occupant is based on the presence or absence of the occupant's movement. Therefore, in order to determine the amount of activity of the occupants, a plurality of pyroelectric infrared sensors are provided, and if the occupant's movement is large, the multiple pyroelectric infrared sensors react and the occupant's movement Is small, there is a method of determining whether the activity amount of the occupant is large or small by reacting only one sensor.

  However, such a method requires a plurality of pyroelectric infrared sensors, which increases the cost. In addition, even if there are a plurality of sensors, there is a problem that the amount of activity cannot be determined when the motion of the occupant is smaller than the motion that can be detected by the sensor or when the motion is similar. That is, it can be seen that there is a limit to the determination of the amount of activity when human detection is performed using only the pyroelectric infrared sensor.

  In the air conditioner of the present embodiment, the motion of a room occupant is detected using a pyroelectric infrared sensor that has been adopted in recent years, and the sound generated in the room or the like is detected by a sound sensor. When the occupant moves, generally a sound accompanying the movement is generated. By predicting various scenes in the room where the air conditioner is installed, it is possible to more accurately grasp the amount of activity of the occupants from the detection results of the infrared sensor and the sound sensor. It becomes possible.

  There are various sounds generated in the room where the air conditioner is operated. Specifically, the sound of the air conditioner itself, the sound of people in the room talking to each other, the sound of people in the room accompanying deskwork, sewing, light tidying up, vacuum cleaners, cooking equipment, hairdressing equipment, etc. There are sounds generated by operation, sounds of television, radio, audio equipment, music, sound effects, etc., and sounds generated even in the case of an unattended person such as clocks, sounds of appreciation fish tank pumps, etc.

  These sounds can be divided into sounds associated with the activities of the occupants and sounds unrelated to the activities of the occupants. Sounds irrelevant to the activities of occupants include the sound of the air conditioner itself, the sound of the television, radio, audio equipment, music, sound effects, clock, sound of the appreciation fish tank pump. Sounds associated with the activities of people in the room include sounds of conversation, desk work, sewing, light tidying up, vacuum cleaners, cookers, hairdressing instruments, and the like.

  Among sounds that are not related to the activities of occupants, sounds that occur even in the absence of people, such as clocks and appreciation fish tank pump sounds, should be referred to as environmental sounds in the room where the air conditioner is installed. The sound obtained by adding the operation sound of the air conditioner itself to the environmental sound of the room needs to be distinguished from other sounds.

  Of the sounds that are not related to the activities of the occupants, the sound, music, and sound effects of television, radio, and audio equipment are also unrelated to the activities of the occupants that are different from the sound of the air conditioner itself. It is necessary to distinguish it from other sounds.

  In addition, when using a heavy household equipment group such as when using a vacuum cleaner among the sounds accompanying the activities of the occupants, the occupants are actively moving. Therefore, such sound needs to be distinguished from other sounds because it is necessary to perform proper air conditioning.

  On the other hand, the conversational sound among the sounds accompanying the activities of the occupants is a key to finely classify the amount of activities of the occupants using the sound sensor. In other words, if the voice of the conversation is low, it can be determined that the person is quietly resting, and if the voice of the conversation continues uninterruptedly, the tendency of the resident's activity to increase can be utilized. It is necessary to grasp separately.

  When using light household equipment such as cooking equipment, hairdressing and beauty equipment, deskwork equipment, etc., among the sounds accompanying the activities of the people in the room, the residents use the light household equipment group while moving lightly. Therefore, it is necessary to distinguish from the case of using a group of equipment for heavy housework or when taking a rest while talking in a quiet voice.

  From the above, the types of sound sources to be identified are the air conditioner itself, broadcast receiving equipment such as television, heavy household equipment such as vacuum cleaners, light household equipment such as cooking equipment, and resident conversations. It becomes. Sound sources that cannot be distinguished from these have intermediate movements and sounds, so they are classified into light household equipment groups.

  The relationship between the types of these sound sources and the value of the activity amount MET shown in FIG. 4 is as follows. In other words, TV / music appreciation ... 1.0 MET, indoor cleaning ... 3.0 METs, cooking ... 2.0 METs, conversation / telephone ... 1.0-1.8 METs (conversation / telephone is not shown in FIG. 4, but other (Refer to the document.) Since the air conditioner itself does not change the amount of activity of the occupants, the amount of activity of the occupants depending on the type of sound source can be expressed as “heavy household equipment group ≧ light household equipment group ≧ conversation ≥ broadcast receiving equipment. The order is “group ≧ air conditioner itself”.

Next, a method for determining the amount of activity of a room occupant using a sound sensor and a pyroelectric infrared sensor will be described. First, in this embodiment, the behavior of the occupant and the sound in the room at that time are divided into the following two patterns.
1: When the occupant is active and the sound accompanying the activity is generated, the change in fever in the body becomes large. In the following, the type of sound source that emits sound associated with this activity is referred to as a “high-temperature fluctuation sound source”.
2: If there is activity in the room but there is almost no sound accompanying the activity, the change in fever in the body is small. In the following, the type of sound source that emits sound not associated with this activity is referred to as a “low-temperature fluctuation sound source”.

  If the sound in the room is from a sound source with small fluctuations in temperature, the detection result of the pyroelectric infrared sensor is divided into multiple stages, and the amount of activity of the occupants is determined according to the stage, and the air conditioner To control. Also, if the sound in the room is from a sound source with a large sense of temperature fluctuation, if the amount of sound is large, it is determined that the activity is active. It is determined that the amount of activity is greater than the determined amount of activity of the occupant, and the air conditioner is controlled. In this way, by dividing the sound sources in the room into groups of small sound sources with small temperature fluctuations and large sound sources with large temperature fluctuations based on the detection results of the sound sensor, the amount of activity of the occupants can be subdivided into more categories. Can be Therefore, it is possible to save power in the air conditioner while taking into consideration comfort with finer control.

  As described above, examples of the small temperature fluctuation sound source include a group of broadcast receivers such as an air conditioner itself, a television, and a radio. In addition to the conversations that the occupants themselves exchange with each other, there are also vacuum cleaners, health promotion devices, juicers, mixers, and other cooking utensils, dryers, shavers, etc. Group of barber equipment. In this case, the air conditioner itself and the conversation are independent sound sources, but for convenience of explanation, the air conditioner itself and the conversation are also expressed as a group.

  These groups of large temperature fluctuation sound sources generally have electric motors inside to support the user's power and speed. Among these, heavy household appliances such as vacuum cleaners and health promotion appliances that require the user's power are forced to perform large activities by the users themselves and have a relatively long duration. For the sake of convenience, a device group that does not impose great activity on users other than the heavy household device group and the above-described sound source group are referred to as a light household device group.

  In this way, by making the air conditioner itself and the broadcast receiving device group a group of small thermal sensation fluctuation sound sources, and the conversation, heavy household equipment group and light household equipment group as a group of large sensation fluctuation sound source, A group of sound sources in the room can be determined based on the detection result of the sensor, and the sound sources can be divided into a group of small sound sources with a large thermal sensation and a group of sound sources with large thermal sensations according to the determined sound source group. As a result, the amount of activity of the occupants can be subdivided into a larger number of sections, and the air conditioner can be saved with more detailed control while considering comfort.

  From this, by dividing the sound into multiple frequency bands according to the frequency, and evaluating the loudness, continuity, irregularity, regularity, interval of intermittentness, etc. with appropriate indicators in each frequency band, It can be seen that the type of sound source can be estimated by a simple method at a relatively low cost.

  FIG. 6B and FIG. 7A show the results of frequency analysis of the sound of a vacuum cleaner and the voice of a person as an example of the sound accompanying the activities of the occupants. It can be seen that the sound of the vacuum cleaner includes even from low frequency sound to high frequency sound. It can also be seen that the human voice has a low high-frequency sound and a low-frequency sound near 1 kHz is larger than the other parts. In addition, it can be seen that the sound of the vacuum cleaner is continuous, and that human conversation is irregular and intermittent.

  FIG. 6A and FIG. 7B show the result of frequency analysis of the sound of the air conditioner itself and the voice of the television as an example of the sound not related to the activities of the occupants. It can be seen that the sound of the air conditioner itself is generally low in both low and high frequency sounds. Moreover, it can be seen that the sound of television includes a high frequency sound in addition to a low frequency, and a high frequency sound of 4 kHz or more is particularly loud compared to a human voice.

  A method for discriminating each sound source group in consideration of the characteristics of each sound source group will be described below. First, if no sound is generated due to the activities of the occupants, only the sound of the wall clock, the sound of the circulation pump of the ornamental fish tank, the sound of the air conditioner itself, etc., detected even in an unattended room are detected. The size of is minimal. In this case, both low frequency sounds and high frequency sounds are detected continuously and regularly at a low level. Therefore, when the result of detecting the sound in the room with the sound sensor is less than a predetermined level and regularly continues, the group of sound sources is determined as the air conditioner itself.

  When the occupant is cleaning with a vacuum cleaner, the sound in the room can be heard only from the vacuum cleaner, not the voice of conversation or television. In this case, both the low frequency sound and the high frequency sound are continuous and regular at a high level, and there is almost no change in the sound level. Accordingly, when the result of detecting the sound in the room by the sound sensor is regularly continuous at a level equal to or higher than a predetermined level and substantially the same level, the group of sound sources is determined as the heavy household equipment group.

  There are irregularities in human conversation, there are many low-frequency sounds, and there are generally long interruptions. Therefore, when the occupants are watching television or radio, or when the occupants are having a conversation with each other, it can be distinguished from the sound of the above-mentioned air conditioner itself or heavy household equipment group. It becomes. On the other hand, it is difficult to determine whether the sound source is a group of broadcast receiving devices such as a television or radio or a conversation between occupants. However, in the case of a sound source from a television or radio, the silence does not continue for a long time unlike actual conversation. In addition, high-frequency sounds that do not appear in actual conversation due to commercials and sound effects that enter the middle. Therefore, by combining these features, it is possible to distinguish between the broadcast receiving device group and the conversation.

  Further, as described above, a sound source that has not been discriminated by any of the air conditioner itself, the heavy household equipment group, the broadcast receiving equipment group, or the conversation by the above discrimination procedure is discriminated as a light household equipment group.

The specific sound source discrimination method in the present embodiment is as follows in consideration of the above consideration.
1. The sound sensor provided in the air conditioner separates and extracts the room sound into a low frequency band sound and a high frequency band sound during operation of the air conditioner.
2. The separated sound is sampled for a predetermined time at a predetermined sampling period for each frequency band. The ratio of the number of sound detections in the low frequency band (BP) and the ratio of the number of sound detections in the high frequency band (HP) are calculated and used as the sampling result.
3. The sampling is performed a plurality of times (m times, 10 times in the embodiment), and the sampling results BP1 to BPm and HP1 to HPm are obtained for each time.
4). The sound level is determined by the magnitudes of BP1 to BPm and HP1 to HPm.
5. The continuity of sound is determined by whether or not all sampling results are equal to or greater than a predetermined threshold value determined for each group of sound sources. This determination method may be used instead of the above determination method 4.
6). The regularity of the sound is determined by whether or not the difference between the upper and lower limits of the sampling result and the average value of the sampling result is within the determination range determined for each group of sound sources.
7). The irregularity of the sound is such that the number of times the sampling result is equal to or greater than a predetermined determination threshold defined for each group of sound sources is equal to or greater than a predetermined lower limit threshold defined for each sound source group and equal to or less than an upper limit count threshold. Judgment is made based on whether or not a series of times equal to or greater than the determination threshold is interrupted.
8). Whether or not there is a long sound interruption is determined by whether the number of times the sampling result is equal to or greater than a predetermined threshold value BT, HT determined for each group of sound sources is equal to or less than a predetermined upper limit number threshold value BJ, HJ defined for each sound source group. In addition, a predetermined determination threshold value BX in which whether or not a series of times equal to or higher than the thresholds BT and HT is interrupted and the difference between the upper limit and lower limit of the sampling result and the average value of the sampling result is determined for each sound source group , HX or not is judged.

  The type of sound source is determined by combining the above procedures. For example, if the size of BP1 to BPm, HP1 to HPm is less than the air conditioner determination thresholds BPa and HPa in 3, based on the sampling results obtained in steps 1 and 2, the sound source is the air conditioner itself. If the values of BP1 to BPm and HP1 to HPm are all equal to or greater than the heavy housework device determination thresholds BPh and HPh, the type of the sound source is set as a candidate for the heavy housework device group. Next, at 4 the type of sound source becomes a candidate for heavy household equipment group, and at 6 the difference between the upper and lower limits of the sampling result and the average value of the sampling result is within the judgment widths BWc and HWc of the heavy household equipment group. If there is, the type of the sound source is determined as the heavy household equipment group. In the figure, a vacuum cleaner is taken as an example as a representative of the heavy household equipment group. 4 and 6, if it is determined that the air conditioner itself is not a heavy household equipment group, then the number of times that the sampling result is equal to or greater than the broadcast receiving apparatus determination thresholds BPt and HPt in 7 If the lower limit number of times threshold value BLt, HLt or more and the upper limit number of times threshold value BHt, HHt or less, and further the series of times exceeding the broadcast receiving device determination threshold value BPt, HPt is interrupted, the type of the sound source is broadcasted. Judge as device group. In the figure, a television is taken as an example of a representative broadcast receiving device group. If it is determined in step 7 that the sampling result is not a broadcast receiving device, the number of times that the sampling result is equal to or higher than the conversation determination thresholds BPs and HPs in the same step 7 is equal to or higher than the lower limit number thresholds BLs and HLs of the conversation and the upper limit number If the number of consecutive times that are equal to or lower than the threshold values BHs and HHs and that are equal to or higher than the conversation determination threshold values BPs and HPs is interrupted, the type of the sound source is determined to be conversation. If it is determined that it is not a conversation, the type of sound source is determined to be a light household equipment group. In the figure, the light household equipment group is described as other.

  Next, a method for discriminating each sound source will be described in detail with reference to FIGS. FIG. 8 is a sound source determination block diagram. FIG. 9 is an explanatory diagram before the primary determination. FIG. 10 is an explanatory diagram of a primary determination main part.

  The determination of the type of sound source is performed in two stages: primary determination and secondary determination. The sound signal in the room is captured by the microphone of the sound sensor 19, converted into an electric signal, amplified, and separated into a plurality of frequency bands (in the embodiment, two frequency bands). The signal converted into an electric signal and amplified is a bandpass filter (or low-pass filter) that passes a low frequency sound of 5 kHz or less and a high-pass filter (or bandpass filter) that passes a high frequency sound of 4 kHz or more. It is separated, digitized and transmitted to the microcomputer built in the control unit.

  Next, a primary determination flow using the sound detection result will be described with reference to FIG. FIG. 11 is a main part flow diagram of the primary determination. The heavy household equipment group is a vacuum cleaner, the broadcast receiving equipment group is a television, and the light household equipment group is other. The same applies hereinafter.

  In step S10, primary determination is started, and in step S12, a sound signal converted into an electric signal and digitized is taken into the microcomputer. In step S13, the microcomputer samples the digital signal in a predetermined sampling period (2 seconds in the embodiment) at a predetermined sampling period (500 μs in the embodiment). In step S15, the sampling period ends. Thereafter, in step S16, the ratio of the sound detection data in the sampled data is calculated for each frequency band, and the sampling result of the sound detection ratio BPn in the low frequency band and the sound detection ratio HPn in the high frequency band is obtained. Until the sampling period ends in step S20, obtaining a sampling result is repeated a predetermined number of times (10 times in the embodiment), and sampling results BP1 to BPm in a low frequency band and sampling results HP1 to HPm (m is a predetermined value) in a high frequency band. The number of sampling intervals in a plurality of times.

  When a predetermined plurality of sampling sections are completed in step S20, it is determined in step S25 whether or not the sound source is an air conditioner. Specifically, the sampling results BP1 to BPm and HP1 to HPm are compared with the air conditioner determination thresholds BPa and HPa. As a result of the comparison, the sampling results BP1 to BPm in the low frequency band are all lower than the air conditioner determination threshold BPa in the low frequency band, and the sampling results HP1 to HPm in the high frequency band are all in the high frequency band. If it is less than the determination threshold HPa, the type of the sound source is primarily determined as the air conditioner itself in step S26. The determination result is accumulated in step S46, and the primary determination is terminated in step S50.

  If it is not determined in step S25 that the sound source is the air conditioner itself, the process proceeds to step S30, in which it is determined whether the sound source is a heavy household appliance. Specifically, the sampling results BP1 to BPm and HP1 to HPm are compared with the heavy household equipment determination threshold values BPh and HPh. As a result of comparison, the sampling results BP1 to BPm in the low frequency band are all higher than the low frequency band heavy household equipment determination threshold BPh, and the sampling results HP1 to HPm in the high frequency band are all in the high frequency band. If it is equal to or greater than the appliance determination threshold HPh, the process proceeds to step S31 and the determination process is continued.

  In step S31, average values BPmean and HPmean of the sampling results BP1 to BPm and HP1 to HPm are obtained for each frequency band. Further, the maximum values BPmax and HPmax and the minimum values BPmin and HPmin of the sampling results BP1 to BPm and HP1 to HPm for each frequency band are extracted. The extracted BPmax and HPmax are equal to or less than the average value BPm and HPm plus the heavy household equipment determination widths BWh and HWh, and the extracted BPmin and HPmin are the heavy household equipment determination widths BWh and HWh from the average values BPm and HPm. If it is equal to or greater than the subtracted value, the sound source is primarily determined as a heavy household equipment group in step S32. The determination result is accumulated in step S46, and the primary determination is terminated in step S50.

  If it is not determined in step S30 or step S31 that the device group is for heavy housework, the process proceeds to step S35 to determine whether the sound source is a broadcast receiving device. Specifically, the sampling results BP1 to BPm and HP1 to HPm are compared with the broadcast receiving device determination threshold values BPt and HPt. As a result of the comparison, for each frequency band, the sampling results BP1 to BPm, HP1 to HPm are equal to or greater than the broadcast reception device determination thresholds BPt and HPt. If it is equal to or greater than the upper limit number thresholds BHt and HHt of the broadcast receiving device, the process proceeds to step S36 and the determination process is continued. In step S36, for each frequency band, it is determined whether or not a series of times equal to or higher than the broadcast receiving device determination thresholds BPt and HPt is interrupted. If this determination criterion is satisfied, broadcast reception of the sound source is performed in step S37. Primary determination is made with the device group. The determination result is accumulated in step S46, and the primary determination is terminated in step S50.

  If it is not determined as the broadcast receiving device group in step S35 or step S36, the process proceeds to step S40, and conversation determination is performed. Specifically, the sampling results BP1 to BPm and HP1 to HPm are compared with the conversation determination threshold values BPs and HPs. As a result of the comparison, for each frequency band, the sampling results BP1 to BPm, HP1 to HPm are the conversation determination threshold values BPs and HPs are equal to or greater than the number of times NBPs and NHPs are equal to or greater than the conversation lower limit frequency threshold BLs and HLs, and If it is equal to or greater than the upper limit number thresholds BHs and HHs, the process proceeds to step S41 and the determination process is continued. In step S41, it is determined for each frequency band whether or not the series of times equal to or greater than the conversation determination thresholds BPs and HPs is interrupted. The determination result is accumulated in step S46, and the primary determination is terminated in step S50.

  If it is not determined to be a conversation in step S40 or step S41, the process proceeds to step S45, and the sound source is primarily determined as a light household equipment group. The determination result is accumulated in step S46, and the primary determination is terminated in step S50. If the conversation is loud and the conversation continues without interruption, it is not determined as conversation in step S40 or step S41. In such a case, the amount of activity of the person who is talking increases, Since the amount of activity is the same as when using a group of light housework devices such as a hairdressing beauty machine and a deskwork device, the sound source can be used for the light housework device group.

  Next, the sound source secondary determination flow will be described with reference to FIGS. FIG. 12 is an explanatory diagram for secondary determination. FIG. 13 is a main part flow diagram of the secondary determination. The primary determination (steps S10 to S50) is repeated a plurality of times (three times in the embodiment), and the sound source is determined by the subsequent secondary determination. FIG. 13 shows a sound source determination procedure including an excerpt of the primary determination process and a secondary determination process.

  In step S1, sound source determination is started. A primary determination is performed in steps S10 to S50, and it is determined in step S55 whether or not the final primary determination has been completed. If the final primary determination has not ended, the process returns to step S10 and the primary determination is repeated. If the final primary determination has been completed, the process proceeds to step S56 to start the secondary determination.

  First, in step S57, in the secondary determination, a sound source having the highest appearance frequency is extracted from the result of the primary determination multiple times. Next, in step S60, it is determined whether there are a plurality of sound sources having the maximum appearance frequency. If there are not a plurality of sound sources with the maximum appearance frequency, the process proceeds to step S61, and the sound source with the maximum appearance frequency is secondarily determined to be an indoor sound source. Thereafter, the secondary determination is ended in step S70, and the sound source determination is ended in step S80.

  If there are a plurality of sound sources with the highest appearance frequency, the process proceeds to step S62, and the sound source with the highest priority is selected from among the sound sources with the highest appearance frequency based on the predetermined priority of sound source selection. And secondary determination. Thereafter, the secondary determination is ended in step S70, and the sound source determination is ended in step S80. In this case, the priority of sound source selection is determined in the order of the air conditioner itself, the heavy household equipment group, the broadcast receiving equipment group, the conversation, and the light household equipment group. It was found that the accuracy of sound source group selection is improved from the results of the inventor's examination by determining the priority in this way. In particular, it has been clarified that, by giving priority to the broadcast receiving device group over the conversation, most of the sound source selections are made appropriately and the accuracy of the sound source group selection is further improved.

  In the present embodiment, the sound source having the highest appearance frequency is determined as the indoor sound source from the result of the primary determination. However, the result of the primary determination may be integrated with appropriate weighting (for example, weighting in order of time series, etc.), and the sound source group that maximizes the integration result may be subjected to secondary determination as an indoor sound source.

  A determination threshold for determining a sound source from the sampling result will be described with reference to FIGS. FIG. 14 is an explanatory diagram of correction by ambient sound. FIG. 15A is an explanatory diagram of correction by ambient sound, and FIG. 15B is an example of correction of a determination threshold value.

  Even when the occupants are quiet, various sounds are generated in the room, such as the clock and the sound of the appreciation fish tank pump. Therefore, when controlling the air conditioner based on the signal from the sound sensor, it is necessary to consider the influence of the sound that is the sum of the sound and the sound of the air conditioner itself when the occupant is quiet. For this reason, in the air conditioner of a present Example, a sound is determined by the above-mentioned method when the occupant is quiet at the time of an operation start.

  The average of the sampling results is set as an “initial value” and compared with a “reference value” (approximately equal to the average value of the sampling results when operated in a similar environment) set for the air conditioner itself. If the reference value is less than the initial value and the result of the sound source is the air conditioner itself, the environmental sound in the room other than the sound of the air conditioner itself affects the judgment result even if the room is quiet. The threshold value for each sound source is corrected. When the determination result of the sound source is a sound source group other than the air conditioner itself, it is determined that a significant sound that cannot be said to be the air conditioner itself or the environmental sound is generated, and the determination threshold value of each sound source is not corrected. When the result of comparing the initial value and the reference value is “reference value ≧ initial value”, each sound source can be identified and determined by the current determination threshold value, and therefore the determination threshold value of each sound source is not corrected.

  Next, correction of the sound source determination threshold will be described with reference to FIG. In step S100, the operation of the air conditioner is started. In step S101, when it is determined that the air conditioner is installed and the first operation, the reference environmental sound measurement period in which the reference environmental sound is measured by the sound sensor after being operated or stopped in a quiet state (in a quiet state in the embodiment). 1 minute after operation or stop), and the initial value stored for each time zone in the storage device of the air conditioner is substituted for the reference value.

  In step S105, correction of the sound source determination threshold value is started. In step S106, the reference environmental sound is measured by the sound sensor during the reference environmental sound measurement period and set as an initial value. In step S107, the reference value of the current time zone is read, and in step S108, the reference value is compared with the initial value. If the initial value is less than or equal to the reference value (reference value ≧ initial value), the initial value is substituted into the reference value for the current time zone in step S111, and the sound source determination threshold value correction is terminated in step S120 without correcting the determination threshold value. .

  If the initial value exceeds the reference value in step S108 (reference value <initial value), the process proceeds to step S115, and the type of the sound source is air based on the sampling result obtained by measuring with the sound sensor during the reference environmental sound measurement period. Judge whether it is the harmony machine itself. If it is determined that the type of the sound source is other than the air conditioner itself, the sound source determination threshold value correction is terminated in step S120 without correcting the determination threshold value as shown in FIG. If it is determined in step S115 that the type of sound source is the air conditioner itself, the process proceeds to step S116, and the determination threshold is corrected as shown in FIG. Proceeding to step S117, as shown in FIG. 15B, the initial value is substituted into the reference value for the current time zone, and the sound source determination threshold value correction is terminated at step S120.

  Next, the operation of the pyroelectric infrared sensor will be described with reference to FIG. FIG. 16 is an explanatory diagram of reaction detection category determination.

  A pyroelectric infrared sensor is used together with a Fresnel lens to capture a change in the amount of infrared rays from the room. When there is an active movement in the room, the reaction amount of the pyroelectric infrared sensor is large, and when the movement is quiet, the reaction amount is small. The signal from the pyroelectric infrared sensor is amplified through a band-pass filter that extracts human movement, digitized, and transmitted to a microcomputer built in the control unit.

  The microcomputer samples this digital signal at a predetermined sampling period (10 ms in the embodiment) for a sampling period (60 seconds in the embodiment). The ratio of the reaction detection data in the sampled data is calculated to obtain a reaction detection ratio Px. When the reaction detection ratio Px is less than the static determination threshold value Pb for determining whether or not the amount of motion in the room is small, the reaction detection section is divided into small reactions. When the reaction detection ratio Px is equal to or greater than the motion determination threshold value Pv for determining whether or not the amount of indoor motion is large, the reaction detection section is divided into reaction large. When the reaction detection ratio Px is equal to or greater than the static determination threshold value Pb and less than the motion determination threshold value Pv, the reaction detection category is classified as a reaction.

  Next, a method for subdividing and determining the amount of activity using a combination of a pyroelectric infrared sensor and a sound sensor will be described with reference to FIGS. FIG. 17 is a combination activity amount determination diagram. FIG. 18 is an explanatory diagram of activity amount determination.

  The activity amount determination unit subdivides the activity amount of the occupant as shown in FIG. 17 by combining the above-described reaction detection category and the sound source determination result obtained at the same time. Thus, even if the reaction detection category is the same, if the sound source is a large sound source group with warmth fluctuations accompanying the activities of the occupants, The amount of activity is judged larger than. As a result, the activity amount classification is changed from the conventional three steps to five to six steps, so that finer control than the conventional one can be achieved.

  In the example of FIG. 17, in the case where the detection classification of the reaction by the pyroelectric infrared sensor is large in response and the type of sound source is a group of sound sources with a large sense of warmth consisting of heavy household equipment, conversation and light household equipment, Maximize the amount. In addition, when the detection category of the reaction by the pyroelectric infrared sensor is static, and the sound source is a group of sound sources with small temperature fluctuations consisting of the air conditioner itself and the broadcast receiving device group, the amount of activity is minimized. In the other parts of the matrix, the amount of activity in the same reaction detection section in the matrix is “warmth variation small sound source group ≦ warmth variation large sound source group”, and the amount of activity in the same sound source group is The amount of activity is determined so that the relationship of “static response <under response <high response” is established. Thus, by subdividing the amount of activity, estimating the amount of activity of the occupants, and finely controlling the air conditioner, the air conditioner can be operated in an energy-saving manner while considering comfort.

  Such determination of the amount of activity is repeated a plurality of times as shown in FIG. With respect to the determination results of a plurality of times, the times closer in time series are weighted and integrated. Based on the integration result, the maximum activity amount category is determined as the activity amount of the resident.

  In FIG. 17, a method of simply determining the activity amount in two stages is adopted. However, for example, the temperature fluctuation large sound source group is further subdivided, and the amount of activity in the same reaction detection category is expressed as “warm fluctuation small sound source group ≦ conversation ≦ light household equipment group ≦ heavy household equipment group”. Ordering may be divided into more active mass categories. The degree of subdivision is determined by how accurately the thermal sensation of the occupant can be estimated from various sensors.

  As described above, the air conditioner is controlled based on the subdivided activity amount information. That is, if the occupant's activity amount is small during cooling, the occupant is quiet and the metabolism is inactive, so the fever in the body decreases, and the occupant's thermal sensation changes to the cold side. In this case, even if the room temperature is slightly increased, the comfort remains within the allowable range, so that the energy saving operation is performed by increasing the room temperature slightly. On the other hand, when the amount of activity of the occupant is large during heating, the occupant is actively moving and the metabolism is active, so the body fever increases, and the occupant's thermal sensation changes to the hot side. In this case, even if the room temperature is slightly lowered, the comfort remains within the allowable range, so that the energy saving operation is performed by the amount that the room temperature is slightly lowered.

  Next, the adjustment of the intake air temperature will be described with reference to FIG. FIG. 19 shows an example of the temperature shift value.

  In order to save energy by spot air-conditioning around the user of the air conditioner, temperature is detected at the position of the remote control placed near the user, and air conditioning is performed mainly in the space where the surrounding user is located be able to. At this time, the heating capacity and the cooling capacity of the air conditioner are controlled based on the intake air temperature and the set temperature of the air conditioner. However, the intake air temperature of the air conditioner installed at a high place in the room is higher than the temperature of the living space from the floor in the room where the user is located to the height of the face. In order to correct this temperature difference, the air conditioner is controlled so that the intake air temperature approaches the set temperature obtained by adding a predetermined value (temperature shift value) to the set temperature. The predetermined value is about −1 to 5 degrees, although it varies depending on the structure of the air conditioner and the operation mode such as heating and cooling.

  However, in general, even in a living space, the temperature differs between the center of the room and the window. Therefore, as described above, even if the air conditioner is controlled so that the intake air temperature approaches the additional set temperature, the user's surroundings may not be comfortable. In such a case, it is necessary for the user to search and select a comfortable state (temperature) by raising and lowering the set temperature using the remote controller.

  When the room changes from a comfortable state to an unpleasant state, the user recognizes that the acceptable comfort range has been exceeded, and resets the settings of the air conditioner. However, the setting of the air conditioner must be changed each time, which is complicated. At that time, if the setting of the air conditioner is changed more than necessary (the setting temperature at the time of cooling is too low / the setting temperature at the time of heating is too high), the power consumption increases and the energy saving operation does not occur. On the other hand, even if it changes from an uncomfortable state to a comfortable state, it is difficult to recognize that it is within the comfortable range when it enters the comfortable range. It may change.

  In the present invention, the activity amount of the occupant is subdivided more than conventional from the detection results of the pyroelectric infrared sensor and the sound sensor, and according to the subdivided activity amount, while considering the comfort of the occupant, Correct the temperature shift value of. Thereby, the occupant can save time and labor for changing the setting each time, and further enables energy-saving operation of the air conditioner.

  Next, the function of the radiation sensor will be described with reference to FIG. FIG. 20A is a radiation amount determination explanatory diagram, and FIG. 20B is a radiation amount determination block diagram. A thermopile is used as a radiation sensor, and the amount of infrared rays from the floor, wall, etc. is measured to obtain the radiation temperature. When the indoor walls and floors are warmed by sunlight, or when the temperature deviates from the room temperature due to other air conditioners or the like, the thermal sensation of the occupants changes, so the room temperature is changed and energy saving operation is performed.

  The signal from the radiation sensor is appropriately amplified, passed through a band pass filter, digitized, and transmitted to the microcomputer. The microcomputer samples this digital signal at a predetermined sampling period during a sampling interval, and calculates the temperature difference between the radiation temperature and the room temperature in combination with the signal from the room temperature sensor. This sampling and calculation are performed a plurality of times, and the average value of the plurality of times is calculated to obtain a radiation temperature difference.

  When the radiation temperature difference becomes negative during cooling, the temperature of the wall or floor is lower than room temperature, and the thermal sensation of the occupants changes to the cold side. Therefore, the comfort can be maintained even if the room temperature is slightly increased, and the energy saving operation is performed by increasing the room temperature slightly. When the radiation temperature difference becomes positive during heating, the temperature of the wall or floor is higher than the room temperature, and the thermal sensation of the occupants changes to the hot side. Therefore, the comfort can be maintained even if the room temperature is slightly lowered, and the energy saving operation is performed by reducing the room temperature slightly.

  On the other hand, airflow has a great influence on human thermal sensation. Even at the same temperature, when the airflow is strong, the thermal sensation is increased than when it is weak, and when the airflow is felt cool, it feels cooler, and when it feels warmer, it feels warmer.

  The air conditioner of the present embodiment has a function of detecting the position of the remote controller, and can recognize the distance between the air conditioner and the remote controller. Using this function, the state of airflow near the remote control where the user is located is estimated. When the position of the remote control is far from the air conditioner, the airflow from the air conditioner is weak, and a user near the remote control feels a weak airflow from the air conditioner. On the other hand, when the remote control is close to the air conditioner, the airflow from the air conditioner is strong, and the user near the remote control feels a strong airflow from the air conditioner. I feel strongly. In other words, in the case of cooling, comfort remains within the allowable range even if the room temperature is slightly increased, and in the case of heating, comfort remains within the allowable range of comfort even if the room temperature is slightly decreased. The machine will be energy saving.

  Utilizing the remote controller position detection function of the air conditioner of this embodiment, the function of sending air conditioned toward the direction in which the remote controller is located and the function of directing the wind in directions other than the direction in which the remote controller is located Prepare. As a result, it is possible to meet the needs of concentrating on cold and hot air when entering the room from outside non-air-conditioned space. In addition, it is possible to avoid the direct wind, but the gentle wind around the area where the remote control is located can meet the needs of people who want a gentle air conditioning.

  Further, the air conditioner of the present embodiment is provided with a temperature sensor in the remote controller, detects the temperature around the remote controller, and is controlled so that the remote controller ambient temperature becomes the set temperature. In this case, when the vehicle is operated under a condition where the heating / cooling load is small, the ambient temperature of the remote controller may pass through the set temperature and become too cold or too warm. This occurs when air conditioning is not performed in a well-balanced manner due to the installation position of the air conditioner, the arrangement of furniture, etc., the setting of the wind direction, or a local cold or warm air gap or heat load. Even in such a case, if the ambient temperature of the remote controller is too lower than the set temperature during cooling, the comfort remains within the allowable range even if the room temperature is slightly increased. In addition, when the ambient temperature of the remote control is too higher than the set temperature during heating, the comfort remains within the allowable range even if the room temperature is slightly lowered, so the air conditioner is put into energy saving operation by slightly lowering the room temperature.

  When the occupant has a large amount of activity, the occupant is moving around the room and is not likely to be near the remote control. In general, the amount of activity is directly related to fever in the body, so it has a great influence on the thermal sensation. However, the airflow only affects the divergence of the amount of heat generated in the body. At a wind speed of about 1 m / s such as air conditioning, the influence on the thermal sensation is smaller than the influence of the activity amount. In addition, room temperature only affects the divergence of the amount of heat generated in the body, and when the room temperature changes within a few degrees like air conditioning, the effect on the thermal sensation is smaller than the effect of the amount of activity. For this reason, when the activity amount is equal to or more than a predetermined category (in the embodiment, the activity amount is “large” or more), the target room temperature is changed according to the temperature difference between the remote control position or the remote control ambient temperature and the set temperature. It doesn't make much sense to control.

  The air conditioner of the present embodiment includes an infrared sensor that detects the amount of movement of the occupants, a sound sensor that detects indoor sounds, a setting unit that sets indoor temperature settings, and a control unit that controls operation. An activity amount determination unit that determines the amount of activity of the occupant according to the detection result of the infrared sensor and the detection result of the sound sensor, and the activity determination amount of the occupant determined by the activity amount determination unit Based on the above, the target value determined based on the set temperature is changed. Thus, the type of the sound source is determined based on the detection result of the sound sensor, and the amount of activity of the occupant is determined by combining the determined type of the sound source and the amount of movement of the occupant. The amount of activity can be determined accurately. Therefore, since the air conditioner can be controlled more appropriately according to the amount of activity of the occupants, the air conditioner can be operated more energy-saving while considering the comfort of the occupants.

  In addition, the air conditioner of the present embodiment includes an infrared sensor that detects the amount of movement of the occupant, a sound sensor that detects the sound in the room, a setting unit that sets the indoor set temperature, and a control that controls the operation. An activity amount determination unit that determines the amount of activity of the resident in accordance with the detection result of the infrared sensor and the type of the sound source determined based on the detection result of the sound sensor. The target value determined based on the set temperature is changed based on the activity determination amount of the occupant determined in the section. As a result, it is possible to determine whether the type of the sound source is a large source of warmth variation or a small source of temperature variation, and the amount of activity of the resident according to the type of the determined sound source and the size of the occupant's movement. Can be accurately determined. Therefore, since the air conditioner can be controlled more appropriately according to the amount of activity of the occupants, the air conditioner can be operated more energy-saving while considering the comfort of the occupants.

  Moreover, the air conditioner of a present Example has a suction temperature detection part which detects the suction air temperature of a compressor, an indoor air blower, and an air conditioner, and a target temperature is lower, so that an activity determination amount is large at the time of heating Change to temperature, during cooling, change the target temperature to a higher temperature as the activity determination amount is smaller, and control at least the compressor speed or the fan speed so that the intake air temperature becomes the target temperature . Based on the detection result of the sound sensor and the detection result of the infrared sensor, the amount of activity is determined in multiple stages, the activity shift value is decreased when the activity amount of the resident is large, and the activity amount of the occupant is small Increases the activity shift value. This is added to the set temperature as a temperature shift value, and the compressor rotational speed and blower rotational speed are changed so that the intake air temperature reaches the target temperature that is the additional set temperature. Adjust. As a result, the suction air temperature is adjusted to be lower than the set temperature as the amount of activity increases during heating, and the suction air temperature is adjusted to be higher than the set temperature as the amount of activity decreases during cooling. Therefore, since the air conditioner can be controlled more appropriately according to the amount of activity of the occupants, the air conditioner can be operated more energy-saving while considering the comfort of the occupants.

  In addition, the air conditioner of the present embodiment includes an infrared sensor that detects the amount of movement of the occupant, a sound sensor that detects the sound in the room, a setting unit that sets the indoor set temperature, and a control that controls the operation. The activity amount of the occupant is determined according to the reaction classification of the infrared sensor that is classified based on the detection result of the infrared sensor and the type of the sound source that is determined based on the detection result of the sound sensor. An activity amount determination unit is included, and the target value determined based on the set temperature is changed based on the activity determination amount of the occupant determined by the activity amount determination unit. Infrared rays that reach the pyroelectric infrared sensor from the room are sampled at a predetermined sampling period for a predetermined time, and the ratio (Px) of the number of detection times of infrared rays is calculated as a sampling result. When the sampling result is less than the static determination threshold, the reaction detection amount classification (reaction detection classification) is classified as “reaction static”. If the sampling result is equal to or greater than the static determination threshold, the sampling result is compared with the strong determination threshold. When the sampling result is equal to or higher than the strong determination threshold, the reaction detection classification is classified as “reaction strong”. When the sampling result is less than the strong determination threshold, the reaction detection category is classified as “in response”. Furthermore, the type of the sound source is determined to be a warm sound fluctuation large sound source or a warm feeling fluctuation small sound source. The amount of activity of the room occupant is determined in another stage by combining the determined type of sound source and the reaction detection category of the room occupant. Thereby, since an air conditioner can be controlled more appropriately according to the amount of activity of the occupants, the air conditioner can be operated more energy-saving while considering the comfort of the occupants.

  In addition, the air conditioner of the present embodiment has a compressor, an indoor fan, and a remote controller capable of bidirectional communication with the air conditioner body, and the position of the remote controller can be adjusted without operating the compressor. The closer to the air conditioner and the smaller the activity determination amount of the occupant is, the smaller the number of revolutions of the indoor blower is, and the air blowing operation is performed toward the remote controller. For example, when the air conditioner detects the remote control position only by pressing a specific button on the remote control, and the remote control position is farther away from the air conditioner, the wind is stronger when you want to hit the wind a little. And the stronger the user's activity, the stronger the wind. By controlling in this way, the moderate cool feeling according to a user's activity can be provided by the energy-saving operation only of ventilation.

  In addition, the air conditioner of the present embodiment repeats the determination of the amount of activity of the occupants in the activity amount determination unit a plurality of times, and the larger the number of times closer to the occupant's activity amount determined in each time in time series. The activity amount of the occupant is secondarily determined based on an integrated value obtained by weighting and integrating each weighted determination result. Thereby, since the determination of the activity amount of the occupant in the activity amount determination unit is repeated a plurality of times, a long-term change in the room can be reflected, and a malfunction based on a short-term change can be avoided. Moreover, since the primary determination is performed for each primary determination section and the indoor situation is grasped, the indoor information can be leveled so that the information can be accurately grasped without any bias. The data in the primary determination section is used only for the primary determination, and the primary determination selects only one result. Therefore, even when the data of a plurality of primary determination candidates antagonize within the primary determination section and the result of the primary determination changes, the secondary determination based on the results of the plurality of primary determinations is the dominant primary determination candidate. Stably maintained. As described above, the determination accuracy is improved and the determination period is made longer (since the determination result is not repeatedly changed in a short time), the comfort in the room is not impaired. In addition, since the primary judgment result closest to the present is the most important, a new activity was temporarily performed, but if another activity was performed immediately, the primary judgment result of the weighted current activity is accumulated. Secondary determination. In this way, it is possible to reliably grasp the trend of activity amount change, properly grasp the activity amount of the occupants, and perform energy-saving operation while taking comfort into consideration with fine control.

  In addition, in the air conditioner of the present embodiment, the activity amount determination unit divides the types of sound sources into a group of sound sources with large thermal sensation variation and a group of sound sources with small thermal sensation variation, and the type of sound source becomes a group of sound sources with large thermal sensation variation. The activity determination amount in the case of belonging is set to be equal to or more than the activity determination amount in the case where the response classification of the infrared sensor is the same category and the type of the sound source belongs to the group of small sound sources with a sense of warmth. Considering that the sound accompanying the activity increases when the activity of the occupant becomes active, even if the movement amount of the occupant categorized based on the detection result of the infrared sensor is the same category, temperature fluctuation In the case of a large sound source, the occupant's activities become active and the thermal sensation shifts to the hotter side, so the activity determination amount is increased and the air conditioning temperature is lowered. Thereby, it is possible to save energy by careful operation while considering comfort.

  In addition, the air conditioner of the present embodiment includes the air conditioner itself and the broadcast receiving device group in the group of small temperature sensation fluctuation sound sources, and the group of heavy housework and conversation in the group of large sound sensation fluctuation sound sources. That is, in the case of the air conditioner itself and the broadcast receiving device group not accompanied by the activities of the occupants, the type of the sound source is classified into a sound source with a small temperature fluctuation. Light household affairs such as vacuum cleaners with large activities of occupants, equipment for heavy housekeeping such as health promotion equipment, cooking equipment such as juicers and mixers without occupant's large activities, barber equipment such as dryers, shavers, etc. In the case of a conversation between a group of equipment and people in the room, the type of sound source is divided into a sound source with a large temperature fluctuation. By classifying in this way, it is possible to appropriately determine the amount of activity of the occupants and to perform energy-saving operation while taking comfort into consideration with fine control.

  Moreover, the air conditioner of a present Example contains a television and radio in a broadcast receiving apparatus group, and contains a vacuum cleaner in a heavy household equipment group.

  When the resident is quietly listening to television or radio, the sound in the room is not accompanied by the activity of the occupant. Therefore, it is not necessary to control the air conditioner according to the sound of the television or radio. For this reason, the sound of television and radio is classified into the broadcast receiving device group of the small group of thermal fluctuation small sound sources. In addition, when the occupant is using the vacuum cleaner, the occupant is performing a large activity, and thus it is necessary to appropriately control the air conditioner. For this reason, the vacuum cleaner is divided into a heavy household equipment group of a warm sound fluctuation large sound source group. By classifying in this way, it is possible to appropriately determine the amount of activity of the occupants and to perform energy-saving operation while taking comfort into consideration with fine control.

  In the air conditioner of the embodiment, the activity amount determination unit separates the detection result of the sound sensor into a plurality of frequency bands, and determines the sound source based on the number of detections for each frequency band and the combination of the frequency bands. Thereby, the kind of sound source can be determined with certainty, and in combination with the detection result of the infrared sensor that detects the amount of movement of the occupant, the determination accuracy of the amount of activity of the occupant can be further improved. Therefore, the air conditioner can be controlled more finely according to the amount of activity of the occupants.

  The air conditioner of the present embodiment includes a frequency band of 1 to 4 kHz and a frequency band of 5 to 12 kHz as a plurality of frequency bands. It is possible to distinguish between human voices that contain a lot of low-frequency (1 to 4 kHz) sounds and machine sounds such as vacuum cleaners that contain a lot of high-frequency (5 to 12 kHz) sounds. Can be determined. Thereby, the kind of sound source can be determined with certainty, and in combination with the detection result of the infrared sensor that detects the amount of movement of the occupant, the determination accuracy of the amount of activity of the occupant can be further improved. Therefore, the air conditioner can be controlled more finely according to the amount of activity of the occupants.

  Further, in the air conditioner of the present embodiment, the activity amount determination unit separates the detection result of the sound sensor into a plurality of frequency bands, samples for a predetermined time at a predetermined sampling period, and the ratio of the number of times of sound detection as the sampling result For each frequency band is determined a plurality of times, and the type of the sound source is determined based on the sampling results of the plurality of times. As a result, it is possible to distinguish between a human voice that contains a lot of low-frequency sounds and a machine sound such as a vacuum cleaner that contains a lot of high-frequency sounds, and it is possible to reliably determine the type of sound source. Become. In addition, since sampling is performed a plurality of times, long-term changes in the type of sound source in the room can be reflected, and malfunctions based on short-term changes are reduced. In addition, the time to judgment is divided into a plurality of sampling sections, and the sampling results are obtained for each sampling section to grasp the indoor situation, so the information in the room can be leveled and grasped. Can be grasped accurately. In addition, the data within the sampling interval is used only for the sampling result of that interval, and since only one sampling result is calculated in one sampling interval, the size, variation, and degree of concentration of multiple sampling results up to the determination It represents the characteristics of the sound source type and provides information useful for determining the sound source type. In this way, the tendency of changes in the type of sound source is reliably grasped and combined with the detection result of the infrared sensor that detects the amount of movement of the occupant, the amount of activity of the occupant is appropriately determined, The air conditioner can be controlled more finely according to the amount of activity of the person, and energy-saving operation can be performed while considering comfort.

  Moreover, the air conditioner of a present Example determines the kind of sound source as the air conditioner itself in all the frequency bands, when all the sampling results are less than the air conditioner determination threshold defined for every frequency band. Thus, by using a slightly larger value as the air conditioner determination threshold value in advance than the sampling result when only the air conditioner itself is operated, the sound generated in the room is generated by the air conditioner itself. It can be seen that there are a few environmental sounds (such as clocks and appreciation fish tank pump sounds) in addition to the sound that is present, and the sound source can be determined as the air conditioner itself. Thereby, a sound source can be grasped | ascertained correctly and it can combine with the detection result of an infrared sensor, and can determine the amount of activity of an in-room person appropriately. Therefore, the air conditioner can be controlled more finely according to the amount of activity of the occupants and energy-saving operation can be performed while considering comfort.

  In addition, the air conditioner of the present embodiment, for each frequency band, all sampling results are equal to or greater than the heavy household equipment judgment threshold, and the difference between the average value of the sampling results and each sampling result is within the heavy household equipment judgment width In the case of, the type of sound source is determined as the heavy household equipment group. Thereby, in order to support a user's power and speed, it is possible to distinguish heavy household equipment such as a vacuum cleaner that produces a relatively loud driving sound and a continuous sound at a constant volume. In this way, if there is a loud sound above a certain level in the room and the sound is constant and continuous, the occupant can use a device such as a vacuum cleaner to move the room. Presume that you are doing a big housework. A value slightly smaller than the sampling result of a loud sound such as a vacuum cleaner is used in advance as the heavy housework device determination threshold, and the heavy housework device determination range is determined based on the degree of variation in the sound. Thereby, the type of sound source can be accurately grasped and combined with the detection result of the infrared sensor, the amount of activity of the resident can be appropriately determined. Therefore, the air conditioner can be controlled more finely according to the amount of activity of the occupants and energy-saving operation can be performed while considering comfort. In the present embodiment, it is determined that the sound is of a certain volume because the difference between the average value of the sampling results and each sampling result is within the heavy household equipment determination range. However, as another determination method, for example, the difference between the average value of the sampling results and the minimum value of the sampling results is within the heavy household equipment determination range so as not to cause an erroneous determination due to a sudden sound. The average value may be set to be equal to or less than the heavy household equipment average threshold.

  Further, in the air conditioner of the present embodiment, the number of times that the sampling result is equal to or greater than the broadcast reception device determination threshold for each frequency band is greater than or equal to the lower limit threshold value of the broadcast reception device and less than or equal to the upper limit frequency threshold of the broadcast reception device. If the series of times when the sampling result is equal to or greater than the broadcast receiving device determination threshold is interrupted, the type of the sound source is determined as the broadcast receiving device group. Thereby, it can be distinguished from heavy household equipment and light household equipment by the interruption of several seconds or more that occurs in the voice of a broadcast receiving device such as a television or in the conversation between occupants. Note that the sound of the broadcast receiving device includes high-frequency sounds (music, sound effects, etc.) that do not occur in conversations between occupants. Therefore, it is possible to discriminate between the voice of the broadcast receiving device and the conversation between the occupants. In addition, it is normal for conversations between occupants to have a long interruption of several tens of seconds, and in consideration of the fact that there is no such a long interruption in the sound of a broadcast receiving device, the accuracy of sound discrimination is further improved. be able to. In this way, the broadcast reception device determination threshold, lower limit threshold, and upper limit threshold are appropriately determined, and the type of sound source is accurately grasped by detecting that the sequence of times greater than or equal to the determination threshold is interrupted. In combination with the detection result of the infrared sensor, the amount of activity of the occupant is appropriately determined, and the air conditioner is controlled more precisely according to the amount of activity of the occupant, while considering comfort, Energy saving operation is possible.

  Further, in the air conditioner of this embodiment, the number of times that the sampling result is greater than or equal to the conversation determination threshold is greater than or equal to the lower limit threshold of conversation and less than or equal to the upper limit threshold of conversation for each frequency band, and the sampling result is When a series of times equal to or greater than the conversation determination threshold is interrupted, the sound source type is determined to be conversation. Thus, the conversation determination threshold value, the lower limit number threshold value, and the upper limit number threshold value are set to appropriate values different from the broadcast receiving device, thereby identifying the conversation with the broadcast receiving device. In this way, by accurately grasping the type of sound source, in combination with the detection result of the infrared sensor, the amount of activity of the occupant is appropriately determined, and the air conditioner is adjusted according to the amount of activity of the occupant. It is possible to perform energy-saving operation while controlling more finely and considering comfort.

  In the air conditioner of the present embodiment, the activity amount determination unit repeats the determination of the sound source a plurality of times, and determines the sound source group having the highest appearance frequency as the indoor sound source in the plurality of determinations. Thereby, since the time until the final secondary determination is lengthened, a long-term change in the room can be reflected, and malfunctions based on the short-term change are reduced. In addition, since the time until the secondary determination is divided into a plurality of primary determination sections and the primary determination is performed for each primary determination section to grasp the indoor situation, the indoor information can be leveled and grasped, and the information bias is eliminated. , Can accurately grasp the information. The data in the primary determination section is used only for the primary determination, and the primary determination selects only one result. Therefore, even when the data of a plurality of primary determination candidates antagonize within the primary determination section and the result of the primary determination changes, the secondary determination based on the results of the plurality of primary determinations is stable to the dominant primary determination candidate. Maintained. As described above, since the secondary determination is performed at a time interval in which a sufficient determination interval in which a reliable determination can be made and a control interval that can ensure a gentle change that does not impair indoor comfort is performed, indoor comfort is impaired. It will never be. It is possible to perform energy-saving operation while taking into consideration comfort with fine control.

  Further, in the air conditioner of the present embodiment, the activity amount determination unit repeats the determination of the sound source a plurality of times, weights the determination result, integrates the weighted result for each group of sound sources, and the integrated value is the maximum. The group of sound sources is determined as the type of sound source in the room. Thereby, as described above, the information in the room can be leveled and grasped, and the information can be grasped accurately without any information bias. Moreover, an air conditioner can be controlled more appropriately by appropriately weighting each determination result. For example, when the weight is increased as the time is closer in time series, the primary determination result closest to the present time is most important. Therefore, when a new activity is temporarily performed but another activity is immediately performed, the primary determination result of the weighted current activity is added up to be a secondary determination. In this way, it is possible to reliably grasp the trend of activity amount change, properly grasp the activity amount of the occupants, and perform energy-saving operation while taking comfort into consideration with fine control.

  Further, in the air conditioner of this embodiment, the activity amount determination unit determines the selection order for a plurality of sound source groups, and when there are a plurality of sound source groups having the maximum appearance frequency or integrated value, the selection order is high. The group of sound sources is determined as the type of sound source in the room. Thereby, the energy-saving operation is continuously performed without delaying the control of the air conditioner, the air conditioning is interrupted, and the comfort is not impaired.

  Moreover, the air conditioner of a present Example contains the air conditioner itself, the heavy household equipment group, the broadcast receiving apparatus group, and conversation as a group of the indoor sound source which an active mass determination part determines. By discriminating the type of sound source in this way, it is possible to grasp the activities of the occupants more in detail and accurately. Therefore, the air conditioner can be operated in consideration of comfort and energy saving.

  Moreover, the air conditioner of a present Example sets the selection order of a broadcast receiving apparatus group higher than the selection order of conversation. When the appearance frequency or the integrated value becomes the maximum at the same point in conversation with the broadcast receiving device group, the broadcast receiving device group is determined as the type of the sound source. It is difficult to distinguish between a person's conversation by a broadcast receiving device group and an actual conversation. However, if the appearance frequency or the integrated value is the same, there is a possibility of including a high frequency band sound (music or sound effect) that does not occur in actual conversation. In this case, the type of the sound source is the same as the broadcast receiving device group. It is reasonable to judge. In this way, it is possible to rationally determine the type of sound source by determining the selection order, so that the amount of activity of the occupants is grasped in combination with the detection result of the infrared sensor, and the comfort is controlled with fine control Energy saving operation is possible.

  In addition, the air conditioner of the present embodiment includes an infrared sensor that detects the amount of movement of the occupant, a sound sensor that detects the sound in the room, a setting unit that sets the indoor set temperature, and a control that controls the operation. A reference threshold value that is a detection result of the sound sensor during a reference environmental sound measurement period in a room where the air conditioner is installed, and is provided with a determination threshold value for determining the type of the sound source based on the detection result of the sound sensor. A threshold correction unit that corrects the determination threshold according to the value, and an activity amount determination unit that determines the amount of activity of the occupant according to the detection result of the infrared sensor and the detection result of the sound sensor. The target value determined based on the set temperature is changed based on the activity determination amount of the occupant determined in the section. Thereby, it is possible to grasp the sound generated when the air conditioner is operated or stopped in the room where the air conditioner is installed. During operation of the air conditioner, the sound of the air conditioner itself, the clock that generates sound even when there is no user, the circulating pump sound of the ornamental fish tank, and the like are detected. Further, when the air conditioner is stopped, a circulating pump sound of a clock or an aquarium fish tank is detected. Specifically, the detected value of the sound sensor (hereinafter referred to as “reference environment initial value”) for a predetermined time from the start of the air conditioner operation or for a predetermined time (for example, 1 minute) while the air conditioner is stopped is compared with a reference value. . In the case of the first operation or stop after the installation of the air conditioner, as a reference value, the sound sensor detection value at the time of operation or stop recorded in the storage element of the control unit in the manufacturing stage (hereinafter referred to as “reference environment initial value”) .). Usually, the reference value <the initial value. When “reference environment initial value ≧ reference environment initial value”, the determination threshold value is not corrected. When correcting the determination threshold from the result of the air conditioner operation, and further when the sound sensor sampling result indicates that the type of the sound source is the air conditioner itself, the determination threshold for determining the type of the sound source is set. to correct. If the sound sensor sampling result indicates that the type of sound source is something other than the air conditioner itself, it means that conversation other than the air conditioner itself, TV sound, etc. are detected, and it is quiet The determination threshold value is not corrected because the operation is not performed at the time. Further, when the determination threshold is corrected from the result of the air conditioner being stopped, the determination threshold for determining the type of the sound source is further corrected when “reference environment initial value ≦ reference environment initial value + standard environment sound difference”. . Here, the standard environmental sound difference is a value indicating the width of the variation of the environmental sound, and is recorded in advance in the storage element of the control unit at the manufacturing stage. In the case of “reference environment initial value + standard environment sound difference <reference environment initial value”, since a conversation other than the air conditioner itself, television sound, etc. are detected and the operation is not in a quiet state, the determination threshold value Is not corrected. In this way, by correcting the determination threshold for determining the type of sound source, the type of sound source can be selected from the type of the large sound source of the thermal fluctuation or the type of the small sound source of the thermal fluctuation according to the sound environment of the room where the air conditioner is installed. It can be determined appropriately for the type. Therefore, the amount of activity of the occupants can be accurately determined in combination with the detection result of the infrared sensor, and it is possible to contribute to energy saving while taking into consideration comfort through fine control.

  In the air conditioner of the present embodiment, the reference environment initial value is equal to or greater than the predetermined reference value and the type of the sound source is determined to be the air conditioner itself, or the reference environment initial value is set to the reference value. If the value is equal to or less than the value obtained by adding the standard environmental sound difference, the determination threshold value is corrected. Since the detection result of the sound sensor during operation or in a quiet state can be obtained, the determination threshold value for determining the type of the sound source can be corrected appropriately. As a result, the type of sound source can be determined appropriately according to the sound environment of the room where the air conditioner is installed. It is possible to perform energy-saving operation while taking comfort into consideration with simple control.

  Moreover, the air conditioner of a present Example changes a reference value into a reference | standard environment initial value, and makes it a new reference value, when the determination threshold value is correct | amended. Even if the sound environment of the room where the air conditioner is installed changes, a new reference value is determined so as to adapt to the changed sound environment. This reference value is stored in the storage device, and the new reference value is used instead of the previous reference value at the start of the next operation. The sound source type can be appropriately determined by correcting the determination threshold value for determining the sound source type based on the new reference value. Therefore, the amount of activity of the occupants can be grasped in combination with the detection result of the infrared sensor, and the energy-saving operation can be performed while considering the comfort with finer control.

  Further, the air conditioner of the present embodiment divides one day into a plurality of time zones, changes only the reference value in the time zone in which the reference environment initial value is detected to the reference environment initial value, and in this time zone Use the new reference value. Even if the sound environment of the room where the air conditioner is installed changes according to the time zone, the determination threshold is corrected to match the changed sound environment, and the type of sound source can be determined appropriately. The amount of activity of the occupants can be ascertained in combination with the detection results, and energy-saving operation can be performed while taking comfort into consideration with fine control.

  Moreover, the air conditioner of the present embodiment includes a suction temperature detection unit that detects the suction air temperature, and is determined based on the set temperature based on the activity determination amount of the occupant determined by the activity amount determination unit. The target value is changed and controlled so that the intake air temperature becomes the target temperature. Infrared rays that reach the pyroelectric infrared sensor from the room are sampled at a predetermined sampling period for a predetermined time, and the ratio (Px) of the number of detection times of infrared rays is calculated as a sampling result. When the sampling result is less than the static determination threshold, the reaction detection amount classification (reaction detection classification) is classified as “reaction static”. If the sampling result is equal to or greater than the static determination threshold, the sampling result is compared with the strong determination threshold. When the sampling result is equal to or higher than the strong determination threshold, the reaction detection classification is classified as “reaction strong”. When the sampling result is less than the strong determination threshold, the reaction detection category is classified as “in response”. Furthermore, the type of the sound source is determined to be a warm sound fluctuation large sound source or a warm feeling fluctuation small sound source. The amount of activity of the room occupant is determined in another stage by combining the determined type of sound source and the reaction detection category of the room occupant. As the amount of activity increases during heating, the intake air temperature is adjusted to be lower than the set temperature. During cooling, as the amount of activity decreases, the intake air temperature is adjusted to be higher than the set temperature. Thereby, since an air conditioner can be controlled more appropriately according to the amount of activity of the occupants, the air conditioner can be operated more energy-saving while considering the comfort of the occupants.

  In the air conditioner of this embodiment, the activity shift value is determined according to the activity determination amount, the activity shift value is set as the temperature shift value, and the intake air temperature becomes the set temperature obtained by adding the temperature shift value to the set temperature. To control. Based on the detection result of the sound sensor and the detection result of the infrared sensor, for example, the activity amount is discriminated in multiple steps from the largest to the largest, large, medium, small and minimum, and the activity shift value is smaller as the activity amount is larger. This is added to the set temperature as a temperature shift value, and the intake air temperature is controlled to be added to the set temperature. As a result, the suction air temperature is adjusted to be lower than the set temperature as the amount of activity increases during heating, and the suction air temperature is adjusted to be higher than the set temperature as the amount of activity decreases during cooling. Therefore, it is possible to perform an energy saving operation by controlling the air conditioner finely while considering the comfort.

  In addition, the air conditioner of the present embodiment includes an infrared sensor that detects the amount of movement of the occupant, a sound sensor that detects the sound in the room, a setting unit that sets the indoor set temperature, and a control that controls the operation. A compressor, a blower, a suction temperature detector for detecting the intake air temperature, and a remote controller capable of bidirectional communication with the air conditioner body, and the relative position between the remote controller and the air conditioner body is detected. The amount of activity of the occupant is determined according to the response classification of the infrared sensor configured based on the detection result of the infrared sensor and the type of the sound source determined based on the detection result of the sound sensor. It has an activity amount determination unit, determines the activity shift value according to the activity determination amount of the occupant determined by the activity amount determination unit, determines the position shift value according to the position of the remote control, the activity shift value and the position shift Suction empty by adding the value to the set temperature The target temperature of the temperature, is controlled so as the suction air temperature becomes the target temperature. Infrared rays that reach the pyroelectric infrared sensor from the room are sampled at a predetermined sampling period for a predetermined time, and the ratio (Px) of the number of detection times of infrared rays is calculated as a sampling result. When the sampling result is less than the static determination threshold, the reaction detection amount classification (reaction detection classification) is classified as “reaction static”. If the sampling result is equal to or greater than the static determination threshold, the sampling result is compared with the strong determination threshold. When the sampling result is equal to or higher than the strong determination threshold, the reaction detection classification is classified as “reaction strong”. When the sampling result is less than the strong determination threshold, the reaction detection category is classified as “in response”. In addition, based on the detection result of the sound sensor and the detection result of the infrared sensor, the activity amount is determined in multiple steps, for example, in the order of maximum, maximum, large, medium, small, and minimum. A shift value is determined, and this is added to the set temperature as a temperature shift value, and the intake air temperature is controlled to be added to the set temperature. As a result, the suction air temperature is adjusted to be lower than the set temperature as the amount of activity increases during heating, and the suction air temperature is adjusted to be higher than the set temperature as the amount of activity decreases during cooling. Further, the distance from the air conditioner to the remote control is detected, and during cooling, the intake air temperature is adjusted by adding a larger position shift value to the temperature shift value as the distance from the air conditioner to the remote control is closer. During heating, the intake air temperature is adjusted by adding a smaller position shift value to the temperature shift value as the distance from the air conditioner to the remote control is closer. After operating the air conditioner with the remote control, the user of the air conditioner places the remote control nearby, so there are many users near the position where the remote control is located, and if the distance from the air conditioner is close If you feel the wind from the air conditioner strongly and the distance from the air conditioner is far, you will hardly feel the wind from the air conditioner. This means that you feel the strength of the airflow that affects the thermal sensation, and the temperature shift value is the value obtained by adding the above-mentioned position shift value to the temperature shift value according to the strength of the airflow, Even if the distance from the air conditioner changes, the air conditioner is controlled so that the thermal sensation approaches the comfortable range. In this way, it is possible to contribute to energy-saving operation by controlling the air conditioner so as to raise and lower the room temperature in a finer and more appropriate manner according to the distance from the air conditioner while considering comfort.

  In addition, the air conditioner of the present embodiment detects the position of the remote controller, and automatically controls the first wind direction to the remote control position and the second control to automatically remove the air conditioner wind direction from the remote control position. In the first control, the position shift value is increased as the distance from the air conditioner is shorter during the cooling operation, and the position shift value is increased as the position from the air conditioner is farther during the heating operation. In the case of the first control in which the direction of the blown air from the air conditioner is automatically directed to the remote control position, it is possible to meet the need for intensively hitting cold air and hot air when entering the room from the outside. Also, in the case of the second control that automatically removes the direction of the air blower from the remote control position, you want to avoid hitting the wind directly, but respond to the needs of people who want gentle air conditioning with gentle wind from the surroundings. be able to. In the case of the first control, if the distance from the air conditioner is short, the wind from the air conditioner is felt strongly, and if the distance from the air conditioner is long, the wind from the air conditioner is hardly felt. This means that you feel the strength of the airflow that affects the thermal sensation, and the temperature shift value according to the strength of the airflow is closer to the air conditioner during the cooling operation and the air shift during the heating operation. As the position from the air conditioner increases, the value obtained by adding a larger position shift value becomes the temperature shift value.Even if the distance from the air conditioner changes, the air conditioner moves so that the thermal sensation approaches the comfortable range. Will be controlled. In this way, energy-saving operation can be achieved by performing fine control according to the distance from the air conditioner.

  In the air conditioner of this embodiment, the position shift value is set to 0 when the activity amount is larger than a predetermined value. For example, when the amount of activity of the occupant based on the detection result of the sound sensor and the detection result of the infrared sensor is maximum or large, the position shift value corresponding to the remote control position is set to zero. It is highly likely that the occupant is moving around the room when the occupant's activity level is large, and is not swaying the position of the remote control. As described above, when it is determined that the activity amount is larger than the predetermined value and the occupant is not present at the position of the remote controller, it is not necessary to give a position shift value corresponding to the position of the remote controller. Instead of setting the position shift value to 0, a position shift value having an absolute value smaller than the position shift value when the amount of activity is small may be used. By doing in this way, an air conditioner can be drive | operated with the realistic position shift value according to the motion of the occupant when the amount of activity is large, and an energy-saving operation can be aimed at considering comfort.

  Moreover, the air conditioner of a present Example makes it a large correction shift value, so that room temperature is low, and adds this correction shift value to a temperature shift value. Thereby, the suction air temperature is adjusted to be lower than the set temperature as the room temperature is higher during the heating operation, and the suction air temperature is adjusted to be higher than the set temperature as the room temperature is lower during the cooling operation. Therefore, it is possible to carry out energy saving operation while considering comfort.

  Further, the air conditioner of this embodiment includes a humidity sensor that detects the humidity in the room, and the lower the humidity, the larger the correction shift value, and the correction shift value is added to the temperature shift value. Thereby, the suction air temperature is adjusted to be lower than the set temperature as the humidity is higher during the heating operation, and the suction air temperature is adjusted to be higher than the set temperature as the humidity is lower during the cooling operation. Therefore, it is possible to carry out energy saving operation while considering comfort.

  Moreover, the air conditioner of an Example is equipped with the radiation temperature sensor which detects the floor surface temperature and wall surface temperature of an indoor, and it is set as a large radiation shift value, so that "radiation temperature-(minus) room temperature" is small, and a radiation shift value is set. Add to temperature shift value. For example, it is divided into “temperature difference positive”, “temperature difference small”, and “temperature difference negative” depending on the value of radiation temperature-indoor temperature, and the smaller the radiation temperature-indoor temperature, the smaller the value is taken as the radiation shift value. Is added to the temperature shift value. Thereby, the suction air temperature is adjusted to be lower than the set temperature as the radiation temperature is higher during heating, and the suction air temperature is adjusted to be higher than the set temperature as the radiation temperature is lower during cooling. Therefore, it is possible to carry out energy saving operation while considering comfort. By incorporating the radiation temperature that affects the thermal sensation into the control of the air conditioner, the radiation shift value is changed according to the difference between the radiation temperature and the room temperature, so that energy-saving operation can be achieved with finer control.

  In addition, the air conditioner of the present embodiment includes at least one of a room temperature sensor that detects indoor temperature, a humidity sensor that detects indoor humidity, a radiation sensor that detects indoor floor temperature and wall temperature, and a calendar information function. According to at least one of room temperature, humidity, radiation temperature-room temperature, and calendar information, a positive correction shift value is added to the temperature shift value during cooling operation, and a negative correction shift value is applied during heating operation. Add to temperature shift value. Thereby, the suction air temperature is adjusted to be lower than the set temperature as the humidity or the radiation temperature is higher during the heating operation, and the suction air temperature is adjusted to be higher than the set temperature as the humidity or the radiation temperature is lower during the cooling operation. Therefore, it is possible to carry out energy saving operation while considering comfort.

  Moreover, the air conditioner of a present Example judges that the amount of clothes is so large that it is close to a severe cold period (for example, February), and the amount of clothes is so small that it is close to midsummer (for example, August) based on a calendar function. . At this time, the smaller the shift amount, the smaller the correction shift value is added to the temperature shift value. Therefore, it is possible to carry out energy saving operation while considering comfort.

  In the air conditioner of the present embodiment, the temperature shift value during the cooling operation is a positive value and the upper limit is set, and the temperature shift value during the heating operation is a negative value and the lower limit is set. By providing an upper limit for the temperature shift value during cooling operation, the room temperature is excessively raised from the set temperature and the departure from comfortable air conditioning is prevented because of pursuing energy saving operation. By providing a lower limit to the temperature shift value even during heating operation, it is possible to prevent the room temperature from being excessively lowered from the set temperature and deviating from comfortable air conditioning. These are because if each correction shift value is added to the temperature shift value, the temperature shift value becomes too large and may deviate from the set temperature. In this way, while considering comfort, the intake air temperature is adjusted to be higher during the cooling operation, and the intake air temperature is adjusted to be lower during the heating operation, thereby saving energy.

  In the air conditioner of the present embodiment, the upper limit value during the cooling operation and the lower limit value during the heating operation of the temperature shift value are both set smaller as the amount of activity increases. In pursuit of energy-saving operation, the upper and lower limits of the temperature shift value are determined according to the amount of activity of the occupants, thereby preventing the room temperature from deviating from the comfortable air conditioning due to extreme deviation from the set temperature. In this way, while considering comfort, the intake air temperature is adjusted to be higher during the cooling operation, and the intake air temperature is adjusted to be lower during the heating operation, thereby saving energy.

  Moreover, the air conditioner of a present Example adds a zone shift value to a temperature shift value, when controlling so that the blowing wind direction of an air conditioner may be automatically turned to a remote control position. When receiving a comfortable air-conditioned wind, the intake air temperature is raised during cooling operation, and the intake air temperature is lowered during heating operation to perform energy saving operation. As described above, since the energy-saving operation is performed only when it is comfortable, the energy-saving operation considering the comfort can be performed.

  Further, the air conditioner of the present embodiment includes a remote control capable of bidirectionally communicating with the air conditioner body using infrared as a communication medium, and the remote control includes a remote control ambient temperature sensor for detecting the remote controller ambient temperature. The ambient temperature information of the remote controller placed near the occupant is transmitted to the air conditioner body, and the temperature around the remote controller near the occupant can be adjusted to the set room temperature. As a result, the surroundings of the occupants become comfortable in spots, and energy-saving operation can be performed without consuming excess air-conditioning energy.

  Moreover, the air conditioner of a present Example adds the remote control temperature shift value according to the value which subtracted setting temperature from remote control ambient temperature to a temperature shift value. During the heating operation, the suction air temperature is adjusted to be lower than the set temperature as the remote control ambient temperature is higher, and during the cooling operation, the suction air temperature is adjusted to be higher than the set temperature as the remote control ambient temperature is lower. Therefore, it is possible to perform an energy saving operation by controlling the air conditioner finely while considering the comfort of the occupants near the remote control.

  In the air conditioner of the present embodiment, the activity shift value during the cooling operation is a positive value and the upper limit is set, and the activity shift value during the heating operation is a negative value and the lower limit is set. Incorporating factors such as the amount of activity, room temperature, humidity, radiation, clothing, and airflow that affect thermal sensation, and adding the zone shift value and remote control temperature shift value, the air is sucked in from the set room temperature that is comfortable during cooling operation. Adjust the air temperature to make it energy efficient. During heating operation, adjust the intake air temperature to a lower level while considering the comfort in the same way from the comfortable room temperature, and save energy. In addition, too much pursuing energy-saving operation prevents the room temperature from deviating from the set temperature to deviate from comfortable air conditioning. For this reason, it is possible to provide an air conditioner that saves power while considering comfort.

  In addition, the air conditioner of the present embodiment calculates the temperature shift value a predetermined number of times, and the intake air temperature becomes the target temperature according to the determined temperature shift value that is an average value of the calculated temperature shift values for the predetermined time. When the temperature shift value is calculated a plurality of times and the difference between the current activity determination amount and the previous activity determination amount is greater than or equal to a predetermined value, the calculation of the predetermined temperature shift value is completed. Even so, instead of the fixed temperature shift value, the intake air temperature is controlled to the target temperature according to the temperature shift value corresponding to the current activity determination amount. Since it takes a long time to change the control and captures a long-term change in the room, erroneous fluctuations in the temperature shift value based on the short-term change are eliminated. In addition, the time until the change of control is divided into multiple temperature shift calculation sections, and the temperature shift is calculated for each temperature shift calculation section to grasp the indoor situation. Information can be accurately captured without any bias. Further, data in the temperature shift calculation section is used only for the temperature shift calculation, and the temperature shift calculation is the only result. Therefore, even when the data of multiple temperature shift calculations compete with each other in the temperature shift calculation interval and the result of the temperature shift calculation changes, the determinate temperature shift value calculation based on the results of the multiple temperature shift calculations is superior. Stable temperature shift calculation results. In addition, when the temperature shift value in any temperature shift calculation interval clearly increases, the temperature shift calculation interval following that temperature shift calculation interval is omitted, and the output in the temperature shift calculation interval in which the temperature shift value has increased clearly is omitted. Based on the above, the deterministic temperature shift value is calculated. Therefore, the time until the control is changed is shortened, and the responsiveness of the control is ensured. Normally, control is performed at a time interval that balances the time required to change the control so that the indoor conditions can be ascertained with emphasis on certainty and the control interval that can ensure a gentle change without impairing the comfort of the room. Since the change is made, the comfort in the room is not impaired. On the other hand, when the output of the temperature shift calculation section obtained by dividing the time until the control change into a plurality of times clearly increases, the control is immediately changed, so that responsiveness is also ensured. In this way, while maintaining indoor comfort with normal gentle control, the time to final judgment is shortened as needed to control the air conditioner in a timely manner, saving energy while considering comfort. You can drive.

  In addition, the air conditioner of this embodiment includes a wind direction plate that controls the blowing direction of the blown air, and when the wind direction plate exists in the detection range of the radiation temperature sensor, the Correct the detected radiation temperature. When the radiation temperature sensor detects the radiation temperature within the predetermined detection range, the wind direction plate of the air conditioner body may exist within the detection range depending on the position of the radiation temperature sensor. Since the wind direction plate of the air conditioner main body exists in the vicinity of the air outlet of the air conditioner, the temperature of the wind direction plate is affected by the air temperature of the air conditioner. In general, during the heating operation, the air temperature of the air conditioner is higher than room temperature, but the temperature of the floor and wall surfaces is lower than room temperature. Here, when the wind direction plate exists within the detection range of the radiation temperature sensor, since the temperature of the wind direction plate is higher than the original temperature of the floor or wall surface, it is detected that the radiation temperature is high. Furthermore, if the ratio of the wind direction plate in the detection range of the radiation temperature sensor increases, the influence of the temperature of the wind direction plate increases. Therefore, when the wind direction plate of the air conditioner main body is within the detection range of the radiation temperature sensor, the detected radiation temperature is corrected according to the position of the wind direction plate to correct the detection error of the radiation temperature. It becomes possible.

  In addition, the air conditioner of the present embodiment includes a wind direction plate that controls the blowing direction of the blown air, and moves the wind direction plate outside the detection range of the radiation temperature sensor when the wind direction plate exists in the detection range of the radiation temperature sensor. Then, the radiation temperature is detected by the radiation temperature sensor. If the wind direction plate of the air conditioner body is within the detection range of the radiation temperature sensor, when detecting the radiation temperature, move the wind direction plate once outside the detection range of the radiation temperature sensor. The radiation temperature can be detected without being affected by the temperature.

  In addition, the air conditioner of the present embodiment includes an infrared sensor that detects the amount of movement of the occupant, a sound sensor that detects the sound in the room, a setting unit that sets the set temperature in the room, and air that has been conditioned An indoor blower that blows the air into the room and a control unit that controls the operation, and determines the amount of activity of the occupant according to the type of the sound source determined based on the detection result of the infrared sensor and the detection result of the sound sensor It has an activity amount determination unit, and changes the rotation speed of the indoor fan according to the type of sound source determined by the sound sensor. Moreover, the rotation speed of an indoor air blower is changed according to the combination of the amount of movement of the occupant based on the infrared sensor and the type of sound source based on the sound sensor. Further, when the type of the sound source is determined to be a conversation or broadcast receiving device group, the number of rotations of the indoor fan is reduced. Moreover, when the kind of sound source is determined to be a heavy housework equipment group, the rotation speed of the indoor fan is increased. It should be noted that the method described above can be adopted for discrimination of the sound source.

  By changing the rotation speed of the indoor blower according to the type of the sound source, it is possible to reduce noise and improve comfort of the air conditioner itself in addition to energy-saving operation. For example, if the sound source identified by the sound sensor is a conversation or broadcast receiving device group, the noise of the air conditioner itself can be reduced by lowering the rotation speed of the indoor blower, and the resident can listen to the conversation or broadcast. It becomes easy. In this case, if the rotational speed of the indoor blower frequently fluctuates due to the determination of the sound source, the noise of the air conditioner itself fluctuates and the occupants feel uncomfortable. Therefore, when the indoor fan rotation speed is changed, the indoor fan rotation speed is not changed for a predetermined period.

  Moreover, based on the combination of the amount of movement of the occupants and the sound source, it is possible to change the rotational speed of the indoor fan. Infrared rays that reach the pyroelectric infrared sensor from the room are sampled for a predetermined time at a predetermined sampling period, and the ratio (Px) of the number of detection times of infrared rays is calculated as the sampling result. When the sampling result is less than the static determination threshold, the reaction detection amount classification (reaction detection classification) is classified as “reaction static”. If the sampling result is equal to or greater than the static determination threshold, the sampling result is compared with the strong determination threshold. When the sampling result is equal to or higher than the strong determination threshold, the reaction detection classification is classified as “reaction strong”. When the sampling result is less than the strong determination threshold, the reaction detection category is classified as “in response”. When the response of the pyroelectric infrared sensor is “Reactive” or “Responding” and the sound source matches the conversation or broadcast receiving device group, the person in the room is quietly watching the conversation or broadcast receiving device Therefore, by reducing the rotational speed of the indoor fan, the occupants can easily hear conversations and broadcasts. Thus, by identifying the sound source in the room, the comfort of the occupants can be further improved.

BHs Upper limit number of times threshold of conversation in low frequency band BHt Upper limit number of times threshold of broadcast receiving device in low frequency band BLs Lower limit number of times threshold of conversation in low frequency band BLt Lower limit number of times threshold of broadcast receiving device in low frequency band BP Low Ratio of frequency of detection in frequency band BPa Air conditioner determination threshold BPh in low frequency band Heavy household equipment judgment threshold BPt in low frequency band Broadcast receiving equipment judgment threshold BWc in low frequency band Heavy housework in low frequency band Device determination width HHs Upper limit number of times threshold of conversation in high frequency band HHt Upper limit number of times threshold of broadcast receiving device in high frequency band HLs Lower limit number of times threshold of conversation in high frequency band HLt Lower limit of broadcast receiving device in high frequency band Frequency threshold HP Ratio of number of detections in high frequency band HPa Air conditioner determination threshold HPh in high frequency band Heavy household equipment in high frequency band Equipment judgment threshold HPt Broadcast receiving equipment judgment threshold in high frequency band HWc Equipment judgment width for heavy housework in high frequency band 1 Air conditioner 2 Indoor unit 3 Outdoor unit 4 Connection pipe 5 Remote control 6 Housing base 7 Heat exchanger 8 Indoor blower 8a Outlet air passage 9 Dew tray 10 Decor frame 11 Front panel 12 Air inlet 13 Air outlet 14 Left and right wind direction plate 15 Up and down air direction plate 16 Indoor transmission / reception unit 17 Pyroelectric infrared sensor 18 Radiation sensor (thermopile)
19 Sound sensor 20 Control unit 25 Room temperature sensor 26 Humidity sensor 27 Remote control ambient temperature sensor 28 Remote control position sensor 29 Calendar function 35 Activity amount determination unit 36 Temperature shift value setting unit 37 Target room temperature setting unit 38 Room temperature setting unit 45 Air conditioning capability control unit 46 Compressor rotation speed setting section 47 Indoor fan rotation speed setting section 48 Outdoor fan rotation speed setting section 55 Compressor rotation speed setting section 56 Outdoor fan 900

Claims (16)

An infrared sensor that detects the amount of movement of the occupants, a sound sensor that detects indoor sound, a setting unit that sets the indoor set temperature, and a control unit that controls operation,
According to the detection result of the infrared sensor and the type of the sound source determined based on the detection result of the sound sensor, an activity amount determination unit that determines the amount of activity of the occupants in the room,
An air conditioner that changes a target value determined based on the set temperature based on the activity determination amount of the occupant determined by the activity amount determination unit. In Claim 1, the said active mass determination part divides the kind of said sound source into the group of a warm feeling fluctuation | variation large sound source and the group of a warm feeling fluctuation | variation small sound source,
The activity determination amount when the type of the sound source belongs to the group of the large temperature fluctuation sound sources, the reaction classification of the infrared sensor is the same, and the type of the sound source belongs to the group of the small temperature fluctuation sound sources An air conditioner that exceeds the activity judgment amount.   The air conditioner according to claim 2, wherein the group of the thermal fluctuation small sound sources includes the air conditioner itself and a broadcast receiving device group, and the group of the thermal fluctuation large sound sources includes the heavy household equipment group and conversation.   4. The air conditioner according to claim 3, wherein the broadcast receiving device group includes a television and a radio, and the heavy housework device group includes a vacuum cleaner.   4. The activity amount determination unit according to claim 1, wherein the activity amount determination unit separates the detection result of the sound sensor into a plurality of frequency bands, and determines the sound source based on the number of detections for each frequency band and the combination of the frequency bands. Air conditioner to do.   6. The air conditioner according to claim 5, wherein the plurality of frequency bands include a frequency band of 1 to 4 kHz and a frequency band of 5 to 12 kHz.   6. The activity amount determination unit according to claim 5, wherein the activity amount determination unit divides the detection result of the sound sensor into a plurality of frequency bands, samples the detection result for a predetermined time at a predetermined sampling period, and sets a ratio of the number of sound detections as the sampling result An air conditioner that performs a plurality of determinations every time and determines the type of the sound source based on the sampling results of the plurality of times.   6. The air conditioner according to claim 5, wherein the activity amount determination unit repeats determination of a sound source a plurality of times, and determines a sound source group having the highest appearance frequency among the plurality of determination results as an indoor sound source.   6. The sound source determination unit according to claim 5, wherein the activity amount determination unit repeats sound source determination a plurality of times, weights the plurality of determination results, integrates the weighted results for each sound source group, and has a maximum integrated value. Is an air conditioner that determines the type of sound source in the room.   The activity amount determination unit according to claim 8 or 9, wherein the activity amount determination unit determines a selection order for a plurality of sound source groups, and the plurality of sound source groups having the maximum appearance frequency or the integrated value has a high selection order. An air conditioner that determines a group of sound sources as the type of sound source in the room.   The air conditioner according to claim 10, wherein the group of sound sources in the room determined by the activity amount determination unit includes the air conditioner itself, a heavy household equipment group, a broadcast receiving apparatus group, and a conversation.   The air conditioner according to claim 11, wherein the selection order of the broadcast receiving device group is set higher than the selection order of conversation as the selection order. An infrared sensor that detects the amount of movement of the occupants, a sound sensor that detects the sound in the room, a setting unit that sets the indoor temperature setting, an indoor blower that blows out air-conditioned air, and operation control A control unit,
According to the detection result of the infrared sensor and the type of the sound source determined based on the detection result of the sound sensor, an activity amount determination unit that determines the amount of activity of the occupants in the room,
An air conditioner that changes the number of rotations of the indoor blower according to the type of the sound source determined by the sound sensor.   The air conditioner according to claim 13, wherein the number of rotations of the indoor blower is changed according to a combination of the amount of movement of the occupant based on the infrared sensor and the type of sound source based on the sound sensor.   The air conditioner according to claim 13 or 14, wherein when the type of the sound source is determined to be a conversation or broadcast receiving device group, the rotational speed of the indoor blower is reduced.   The air conditioner according to claim 13 or 14, wherein when the type of the sound source is determined to be a heavy household equipment group, the number of rotations of the indoor blower is increased.

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