WO2010134283A1 - Conditionneur d'air et dispositif de détection d'obstacle - Google Patents

Conditionneur d'air et dispositif de détection d'obstacle Download PDF

Info

Publication number
WO2010134283A1
WO2010134283A1 PCT/JP2010/003185 JP2010003185W WO2010134283A1 WO 2010134283 A1 WO2010134283 A1 WO 2010134283A1 JP 2010003185 W JP2010003185 W JP 2010003185W WO 2010134283 A1 WO2010134283 A1 WO 2010134283A1
Authority
WO
WIPO (PCT)
Prior art keywords
obstacle
distance
area
detection device
ultrasonic sensor
Prior art date
Application number
PCT/JP2010/003185
Other languages
English (en)
Japanese (ja)
Inventor
長谷川博基
森川智貴
杉尾孝
秋山淳
新田武彦
Original Assignee
パナソニック株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by パナソニック株式会社 filed Critical パナソニック株式会社
Publication of WO2010134283A1 publication Critical patent/WO2010134283A1/fr

Links

Images

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S15/00—Systems using the reflection or reradiation of acoustic waves, e.g. sonar systems
    • G01S15/02—Systems using the reflection or reradiation of acoustic waves, e.g. sonar systems using reflection of acoustic waves
    • G01S15/04—Systems determining presence of a target
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/70—Control systems characterised by their outputs; Constructional details thereof
    • F24F11/72—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
    • F24F11/79—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling the direction of the supplied air
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2120/00—Control inputs relating to users or occupants
    • F24F2120/10—Occupancy

Definitions

  • the present invention relates to an air conditioner that detects the presence or absence of a person and the presence or absence of an obstacle and performs air conditioning based on the detection result, and an obstacle detection device that detects the presence or absence of an obstacle.
  • a conventional air conditioner includes a human body detection device having a human body detection sensor such as a pyroelectric infrared sensor and an ultrasonic sensor for detecting a distance to an object in an indoor unit.
  • a human body detection sensor such as a pyroelectric infrared sensor and an ultrasonic sensor for detecting a distance to an object in an indoor unit.
  • the wind direction changing means composed of the upper and lower blades and the left and right blades is controlled to send the conditioned air toward an area where no people are present (for example, see Patent Document 1).
  • the indoor unit is provided with a human position detecting means and an obstacle position detecting means, and the wind direction is determined based on the detection signals of both the human position detecting means and the obstacle position detecting means.
  • the wind direction is determined based on the detection signals of both the human position detecting means and the obstacle position detecting means.
  • this air conditioner when heating operation starts, it is first determined whether there is a person in the room by the person position detecting means, and if there is no person, whether there is an obstacle by the obstacle position detecting means If there is no obstacle, the wind direction changing means is controlled so that the conditioned air spreads throughout the room.
  • the wind direction changing means is controlled in a direction in which there is no obstacle.
  • air conditioning is performed directly on the obstacle. The wind direction changing means is controlled so that the wind does not hit and the conditioned air spreads throughout the room.
  • the wind direction changing means is controlled so that the conditioned air spreads throughout the room. Determine whether there is an obstacle in the absence area, and if there is an obstacle, control the wind direction control means in the direction of the obstacle so that the conditioned air does not hit the obstacle strongly, but there is no obstacle In this case, the wind direction control means is controlled in a direction where there is no obstacle (see, for example, Patent Document 2).
  • JP 63-143449 A Japanese Utility Model Publication No. 3-72249
  • an ultrasonic sensor is used as a means for outputting distance information in a configuration in which a human detection signal and distance information are output from a human body detection device to a human position detection means.
  • this ultrasonic sensor is required to detect objects at relatively long distances, it is necessary to use a horn and an amplifier circuit with high gain. Since the sensor utilizes the phenomenon, it becomes a direction that is more susceptible to vibration and the like. Furthermore, side lobes generated by multiple reflections of the transmission output of the ultrasonic sensor (between relatively close objects) may generate a virtual image.
  • the present invention has been made in view of such problems of the prior art, and provides a reception permission period during the distance measurement operation, and sets the distance between the ultrasonic sensor and the detection target in the area to be air-conditioned. Accordingly, it is possible to accurately measure the distance to the obstacle by dividing into the distance area and changing the reception permission period according to the distance area and the direction in which the ultrasonic sensor is facing (directivity angle).
  • An object of the present invention is to provide an air conditioner with improved air conditioning efficiency by controlling the wind direction changing means based on the distance measurement result.
  • the present invention provides an indoor unit with a human body detection device that detects the presence or absence of a person and an obstacle detection device that detects the presence or absence of an obstacle, and the detection signal of the human body detection device And an air conditioner configured to control a wind direction changing means provided in the indoor unit based on a detection signal of the obstacle detection device, wherein the obstacle detection device transmits and receives ultrasonic waves. And a transmission permission period for transmitting the transmission signal to the ultrasonic sensor and permitting reception only for a predetermined period after transmitting the transmission signal, and determining whether there is an obstacle based on the sound wave reception signal in the reception permission period. It includes an obstacle position detecting means for determining, and the reception permission period is set according to a distance to be detected and / or a directivity angle of the ultrasonic sensor.
  • the obstacle detection device performs obstacle position detection for each of a plurality of cells obtained by subdividing an area to be air-conditioned, and the directivity angle is defined for each of the plurality of cells, and the reception permission period. Is set according to the directivity angle of the ultrasonic sensor.
  • the obstacle detection device divides the area to be air-conditioned into distance areas according to the distance between the ultrasonic sensor and the detection target, and the reception permission period is in the distance area. It is characterized by being set accordingly.
  • the obstacle detection device performs obstacle position detection a plurality of times in each of the plurality of cells, and determines that there is an obstacle when the number of times the sound wave reception signal is received is equal to or greater than a predetermined value. It is characterized by doing.
  • another aspect of the present invention is an obstacle detection device that transmits and receives an ultrasonic wave and transmits a transmission signal to the ultrasonic sensor and transmits the transmission signal for a predetermined period.
  • a reception permission period is provided during a distance measurement operation, and the presence or absence of an obstacle is accurately detected by changing the reception permission period according to the distance region and the directivity angle of the obstacle detection device.
  • the air conditioner with improved air conditioning efficiency can be provided by controlling the wind direction changing means based on the distance measurement result.
  • the front view of the indoor unit of the air conditioner which concerns on this invention 1 is a longitudinal sectional view of the indoor unit of FIG.
  • the longitudinal cross-sectional view of the indoor unit of FIG. 1 with the movable front panel opening the front opening and the upper and lower blades opening the outlet. 1 is a longitudinal sectional view of the indoor unit in FIG. 1 in a state where the lower blades constituting the upper and lower blades are set downward.
  • Schematic which shows the person position discrimination area detected by the sensor unit which comprises the human body detection apparatus provided in the indoor unit of FIG. Flowchart for setting region characteristics for each region shown in FIG. The flowchart which finally determines the presence or absence of a person in each area
  • Timing chart showing the presence / absence determination of people by each sensor unit Schematic plan view of a residence where the indoor unit of FIG. 1 is installed The graph which shows the long-term accumulation result of each sensor unit in the residence of FIG. Schematic plan view of another residence where the indoor unit of FIG. 1 is installed The graph which shows the long-term accumulation result of each sensor unit in the residence of FIG. Sectional drawing of the obstacle detection apparatus provided in the indoor unit of FIG.
  • FIG. 15 is a timing chart showing noise detection processing by the ultrasonic sensor drive circuit of FIG. Schematic showing the ultrasonic reach distance for the time corresponding to the distance number indicating the distance from the ultrasonic sensor to the position P
  • FIG. 15 is a timing chart showing reception processing by the ultrasonic sensor driving circuit of FIG.
  • FIG. 14 A schematic plan view of a room for explaining a wall detection algorithm for measuring a distance from an indoor unit to a surrounding wall surface to obtain a distance number
  • FIGS. 1 to 4 show the indoor unit of the air conditioner according to the present invention. ing.
  • the indoor unit has a main body 2 and a movable front panel (hereinafter simply referred to as a front panel) 4 that can freely open and close the front opening 2a of the main body 2, and the front panel 4 is the main body 2 when the air conditioner is stopped. While the front opening 2a is closed in close contact with the front, the front panel 4 moves in a direction away from the main body 2 to open the front opening 2a during operation of the air conditioner.
  • 1 and 2 show a state in which the front panel 4 closes the front opening 2a
  • FIGS. 3 and 4 show a state in which the front panel 4 opens the front opening 2a.
  • the heat exchanger 6 and the indoor air taken in from the front opening 2 a and the upper opening 2 b are heat-exchanged by the heat exchanger 6 and are indoors.
  • a filter 16 is provided between the front opening 2a and the upper surface opening 2b and the heat exchanger 6 for removing dust contained in the indoor air taken in from the front opening 2a and the upper surface opening 2b.
  • the upper part of the front panel 4 is connected to the upper part of the main body 2 via two arms 18 and 20 provided at both ends thereof, and a drive motor (not shown) connected to the arm 18 is driven and controlled.
  • a drive motor (not shown) connected to the arm 18 is driven and controlled.
  • the upper and lower blades 12 are composed of an upper blade 12a and a lower blade 12b, and are respectively swingably attached to the lower portion of the main body 2.
  • the upper blade 12a and the lower blade 12b are connected to separate drive sources (for example, stepping motors), and are independently controlled by a control device (first board 48, for example, a microcomputer described later) built in the indoor unit. Angle controlled.
  • first board 48 for example, a microcomputer described later
  • the upper and lower blades 12 can be composed of three or more upper and lower blades. In this case, at least two (particularly, the uppermost blade and the lowermost blade) can be independently angle-controlled. Is preferred.
  • the left and right blades 14 are configured by a total of 10 blades arranged five by left and right from the center of the indoor unit, and are respectively swingably attached to the lower portion of the main body 2.
  • the left and right five blades are connected to separate drive sources (for example, stepping motors) as a unit, and the left and right five blades are independently angle-controlled by a control device built in the indoor unit. .
  • a method for driving the left and right blades 14 will also be described later.
  • ⁇ Configuration of human body detection device> As shown in FIG. 1, a plurality of (for example, three) fixed sensor units 24, 26, and 28 are attached to the upper portion of the front panel 4 as a human body detection device. , 28 are held by a sensor holder 36 as shown in FIGS. 3 and 4.
  • Each of the sensor units 24, 26, and 28 includes a circuit board, a lens attached to the circuit board, and a human body detection sensor mounted inside the lens.
  • the human body detection sensor is composed of a pyroelectric infrared sensor that detects the presence or absence of a person by detecting infrared rays radiated from the human body, for example, and outputs in accordance with a change in the amount of infrared rays detected by the infrared sensor.
  • the presence or absence of a person is determined by the circuit board based on the pulse signal. That is, the circuit board acts as presence / absence determination means for determining the presence / absence of a person.
  • FIG. 5 shows human position determination areas detected by the sensor units 24, 26, and 28.
  • the sensor units 24, 26, and 28 can detect whether or not a person is in the next area.
  • Sensor unit 24 area A + B + C + D
  • Sensor unit 26 Area B + C + E + F
  • Sensor unit 28 area C + D + F + G That is, in the indoor unit for an air conditioner according to the present invention, the areas that can be detected by the sensor units 24, 26, and 28 are partially overlapped, and a smaller number of sensor units than the areas A to G are used. Thus, the presence or absence of a person in each of the areas A to G is detected.
  • Table 1 shows the relationship between the output of each sensor unit 24, 26, and 28 and the presence determination area (area determined to have a person). In Table 1 and the following description, the sensor units 24, 26, and 28 are referred to as a first sensor 24, a second sensor 26, and a third sensor 28.
  • FIG. 6 is a flowchart for setting region characteristics to be described later in each of the regions A to G using the first to third sensors 24, 26, and 28.
  • FIG. 7 illustrates the first to third sensors.
  • FIG. 6 is a flowchart for determining in which of the regions A to G a person is present using the sensors 24, 26, and 28, and a person position determination method will be described below with reference to these flowcharts.
  • step S1 the presence / absence of a person in each area is first determined at a predetermined period T1 (for example, 5 seconds).
  • a predetermined period T1 for example, 5 seconds.
  • each of the areas A to G is classified into a first area where people are good (places where people are good), a second area where people are short (areas where people simply pass, areas where stay time is short) And a third area (a non-living area where people hardly go, such as walls and windows).
  • the first region, the second region, and the third region are referred to as a life category I, a life category II, and a life category III, respectively, and the life category I, the life category II, and the life category III are respectively a region characteristic I. It can also be said that the region of region characteristic II, region of region characteristic II, region of region characteristic III.
  • the life category I (region characteristic I) and the life category II (region characteristic II) are combined into a life region (region where people live), while the life category III (region characteristic III) is changed to a non-life region (
  • the area of life may be broadly classified according to the frequency of the presence or absence of a person.
  • FIG. 9 shows a case where the indoor unit of the air conditioner according to the present invention is installed in an LD of 1 LDK comprising one Japanese-style room, an LD (living room / dining room) and a kitchen, and is indicated by an ellipse in FIG.
  • the area shows the well-placed place where the subject reported.
  • the presence / absence of a person in each of the regions A to G is determined every period T1, and 1 (with a reaction) or 0 (without a reaction) is output as a reaction result (determination) in the period T1, Is repeated a plurality of times, and in step S2, all sensor outputs are cleared.
  • step S3 it is determined whether or not the cumulative operation time of the predetermined air conditioner has elapsed. If it is determined in step S3 that the predetermined time has not elapsed, the process returns to step S1. On the other hand, if it is determined that the predetermined time has elapsed, the reaction results accumulated in the predetermined time in each of the regions A to G are two. Each region A to G is identified as one of the life categories I to III by comparing with the threshold value.
  • a first threshold value and a second threshold value smaller than the first threshold value are set, and in step S4, the long-term accumulation result of each of the regions A to G is obtained. It is determined whether or not it is greater than the first threshold value, and the region determined to be greater is determined to be the life category I in step S5. If it is determined in step S4 that the long-term accumulation result of each region A to G is less than the first threshold value, whether or not the long-term accumulation result of each region A to G is greater than the second threshold value in step S6.
  • the region determined to be large is determined to be the life category II in step S7, while the region determined to be small is determined to be the life category III in step S8.
  • the regions C, D, and G are determined as the life category I
  • the regions B and F are determined as the life category II
  • the regions A and E are determined as the life category III.
  • FIG. 11 shows a case where the indoor unit of the air conditioner according to the present invention is installed in another LD of 1 LDK, and FIG. 12 discriminates each region A to G based on the long-term accumulation result in this case. Results are shown.
  • the areas B, C, and E are determined as the life category I
  • the areas A and F are determined as the life category II
  • the areas D and G are determined as the life category III.
  • step S23 it is determined whether or not a predetermined number M (for example, 15 times) of reaction results in the period T1 has been obtained. If it is determined that the period T1 has not reached the predetermined number M, the process returns to step S21. When it is determined that the period T1 has reached the predetermined number M, in step S24, the total number of reaction results in the period T1 ⁇ M is used as the cumulative reaction period number, and the cumulative reaction period number for one time is calculated.
  • a predetermined number M for example, 15 times
  • step S27 by subtracting 1 from the number of times (N) of cumulative reaction period calculations and returning to step S21, the calculation of the cumulative reaction period number for a predetermined number of times is repeatedly performed.
  • Table 2 shows a history of reaction results for the latest one time (time T1 ⁇ M).
  • ⁇ A0 means the number of cumulative reaction periods for one time in the region A.
  • the cumulative reaction period number of one time immediately before ⁇ A0 is ⁇ A1
  • the previous cumulative reaction period number of ⁇ A0 is ⁇ A2,...
  • N 4
  • the past four history ( ⁇ A4, ⁇ A3 , .SIGMA.A2, .SIGMA.A1), for life category I it is determined that there is a person if the cumulative reaction period is one or more.
  • life category II it is determined that there is a person if the cumulative reaction period of one or more times is two or more in the past four history
  • life category III the past four history Among them, if the cumulative reaction period number of 2 times or more is 3 times or more, it is determined that there is a person.
  • the presence / absence of the person is similarly estimated from the past four histories, life categories, and cumulative reaction period times.
  • the presence / absence of a person is estimated using a smaller number of sensors than the number of discrimination areas A to G. Since there is a possibility that the position is incorrect, avoiding human position estimation in a single predetermined period regardless of whether it is an overlapping area, the region characteristics obtained by accumulating the region determination results for each predetermined period over a long period, and for each predetermined period The region determination results are accumulated N times, and the location of the person is estimated from the past history of the accumulated reaction period times of each region obtained, thereby obtaining the position estimation result of the person with high probability.
  • each area to G Region characteristics (life categories I to III) are determined, and the time required for presence estimation and the time required for absence estimation are changed according to the region characteristics of the regions A to G.
  • the time required for estimating the presence / absence of the area determined as the life category II as a standard in the area determined as the life category I, there is a person at a shorter time interval than the area determined as the life category II. In contrast, when there are no people in the area, the absence of the person is estimated at a longer time interval than the area determined as the life category II.
  • the time required for estimation is set to be long.
  • the presence of a person is estimated at a longer time interval than the area determined to be life category II.
  • an obstacle detection device 30 is provided at the lower part of one side (left side when viewed from the front) of the main body 2, and the obstacle detection device 30 will be described with reference to FIG. .
  • the term “obstacle” refers to all objects that are blown out from the air outlet 10 of the indoor unit and impede the flow of air to provide a comfortable space for residents. It is a collective term for non-residents such as furniture such as sofas, televisions, and audio.
  • the obstacle detection device 30 includes an ultrasonic distance sensor (hereinafter simply referred to as “ultrasonic sensor”) 32 as a distance detection means, a spherical support 34 that rotatably supports the ultrasonic sensor 32, and an ultrasonic wave.
  • a horn 36 formed on the support 34 positioned in the sound wave exit direction of the sensor 32, and a distance detection direction changing means (driving means) for changing the distance detection direction by changing the direction of the ultrasonic sensor 32 are provided. Yes.
  • the horn 36 is for improving the sensitivity of the ultrasonic wave transmitted by the ultrasonic sensor 32 and enhancing the directivity to improve the obstacle detection accuracy.
  • the support 34 has a horizontal (horizontal) rotating shaft 40 and a vertical (vertical) rotating shaft 42 extending in a direction orthogonal to the horizontal rotating shaft 40, and the horizontal rotating shaft 40 is
  • the horizontal rotation motor 44 is connected to and driven
  • the vertical rotation shaft 42 is connected to and driven by the vertical rotation motor 46.
  • the distance detection direction changing means includes a horizontal rotation motor 44, a vertical rotation motor 46, and the like, and can change the direction angle of the ultrasonic sensor 32 two-dimensionally and be directed to the ultrasonic sensor 32. The direction angle can be recognized.
  • the ultrasonic sensor 32 serves as both an ultrasonic transmitter and a receiver.
  • the ultrasonic sensor 32 transmits an ultrasonic pulse.
  • the ultrasonic sensor 32 reflects the reflected wave.
  • the ultrasonic transmission unit and the reception unit of the ultrasonic sensor 32 are separate, there is no change in principle or function, and the ultrasonic sensor 32 can be adopted in the present embodiment.
  • the direction in which the ultrasonic sensor 32 is directed by the distance detection direction changing means is changed to a vertical angle (a depression angle, an angle measured downward from the horizontal line) ⁇ , a horizontal angle (horizontal angle, viewed from the indoor unit). It can be recognized as ⁇ ), an angle measured to the right from the left reference line.
  • D H / sin ⁇
  • the position of the person or the object in the living space is recognized by changing the vertical angle ⁇ and the horizontal angle ⁇ at predetermined angular intervals and causing the ultrasonic sensor 32 to perform a detection operation (scanning). Can do.
  • the floor surface of the living space is subdivided as shown in FIG. 14 by the ultrasonic sensor 32 based on the vertical angle ⁇ and the horizontal angle ⁇ , and each of these areas is obstructed. It is defined as a position determination area or “position”, and it is determined which position an obstacle is present. Note that all the positions shown in FIG. 14 substantially coincide with all the areas of the human position determination area shown in FIG. 5, and the area boundary in FIG. 5 is substantially coincident with the position boundary in FIG. By making it correspond as follows, the air conditioning control described later can be easily performed, and the memory to be stored is reduced as much as possible.
  • the number of position areas is set to be larger than the number of areas of the human position determination area, and at least two positions belong to each of the human position determination areas.
  • the air conditioning control can be performed by dividing the area so that at least one position belongs to each person position determination area.
  • each of the plurality of person position determination areas is divided according to the distance to the indoor unit, and the number of positions belonging to the person position determination area in the near area is determined as the person position determination in the far area.
  • the number of positions belonging to the area is set to be larger than the number of areas belonging to the area, but the number of positions belonging to each person position determination area may be the same regardless of the distance from the indoor unit.
  • the air conditioner according to the present invention detects the presence or absence of a person in the regions A to G by the human body detection device, and detects the presence or absence of an obstacle in the positions A1 to G2 by the obstacle detection device.
  • the human body detection sensor can detect the presence or absence of a person by detecting infrared rays emitted from the human body, for example, the obstacle detection device receives a reflected wave of the transmitted ultrasonic wave to Since the distance of an object is detected, it is impossible to distinguish between a person and an obstacle.
  • the obstacle detection apparatus detects only the obstacle by performing the data processing described below.
  • the main body 2 includes three boards 48, 50, and 52 that are electrically connected to each other, and includes a front panel 4, upper and lower blades 12, and left and right blades attached to the main body 2.
  • the movable parts such as 14 are controlled by the first substrate 48, and the third substrate 52 is mounted integrally with the ultrasonic sensor 32.
  • the three substrate configurations described above will be described as an example. However, the configuration (number) of the substrates 48, 50, and 52 is not limited to the above.
  • the second substrate 50 is provided with a sensor input amplification unit 54, a band amplification unit 56, a comparison unit 58, and a latch circuit unit 60, and an ultrasonic transmission signal output from the first substrate 48.
  • the ultrasonic sensor 32 transmits an ultrasonic wave toward each address to be described later based on the input signal, receives the reflected wave, and outputs it to the band amplifying unit 56.
  • As the ultrasonic transmission signal for example, a 50 kHz signal with 50% duty that repeats ON / OFF at 10 ⁇ s is used, and the band amplification unit 56 amplifies a signal in the vicinity of 50 kHz.
  • the output signal of the band amplifier 56 is input to the comparator 58 and compared with a predetermined threshold set in the comparator 58.
  • the comparison unit 58 outputs an L level (low level) signal to the latch circuit unit 60 when the output signal of the band amplifying unit 56 is larger than the threshold value, whereas the comparison unit 58 outputs H when the output signal of the band amplifying unit 56 is smaller than the threshold value.
  • a level (high level) signal is output to the latch circuit unit 60.
  • the first substrate 48 outputs a reception permission signal to the latch circuit unit 60 only for a predetermined period after the transmission signal is output in order to prevent false detection of a virtual image due to a reverberation signal or a side lobe.
  • FIG. 15 shows the ultrasonic sensor 32 having a transmission / reception integrated type, but it is of course possible to use a transmitter and a receiver separately.
  • FIG. 16 shows a latch circuit unit 60 configured by RS (reset set) flip-flops.
  • Table 4 shows two inputs (input from the comparison unit 58 (RESET input) and from the first substrate 48. The output (Q) from the latch circuit unit 60 determined based on the input (SET input) is shown.
  • H * indicates whether the output is H level when both the RESET input and the SET input are at the L level, and which is the H level first when both the RESET input and the SET input are at the H level. The output level is different.
  • FIG. 17 is a schematic timing chart showing the state of each signal, and the operation will be described with reference to FIG.
  • the signal from the sensor input amplification unit 54 is transmitted to the third substrate 52.
  • the ultrasonic sensor 32 transmits an ultrasonic wave toward the set address.
  • a signal output as shown in FIG. 17 is generated in the band amplifying unit 56 by the wraparound of the electrical signal to the band amplifying unit 56 and the reverberation of the ultrasonic wave, and is input to the comparing unit 58.
  • the comparison unit 58 compares the input signal with a preset threshold value, and outputs an L level signal to the latch circuit unit 60 if it is greater than the threshold value.
  • the signal input to the comparison unit 58 at this time is not a signal generated by receiving the reflected wave from the living space by the ultrasonic sensor 32, it is received from the transmission of the ultrasonic transmission signal until the predetermined time t1.
  • the permission signal is set to L level (reception is prohibited) and is output from the first substrate 48 to the latch circuit unit 60 of the second substrate 50. Therefore, the ultrasonic reception signal output from the latch circuit unit 60 to the ultrasonic sensor control unit of the first substrate 48 can maintain the H level (no reflected wave).
  • the ultrasonic wave transmitted from the ultrasonic sensor 32 is reflected in the living space, and this reflected wave (first wave) is received by the ultrasonic sensor 32 and input to the comparison unit 58 via the band amplification unit 56.
  • an L level signal is output to the latch circuit unit 60.
  • the reception permission signal is set to H level (reception permission) from the transmission of the ultrasonic transmission signal to a predetermined time t1 to t2 (t1 is set shorter than the time interval from the ultrasonic transmission to the reflected wave reception). Therefore, the ultrasonic reception signal output from the latch circuit unit 60 to the ultrasonic sensor control unit of the first substrate 48 is at the L level (there is a reflected wave).
  • t1 and t2 A detailed setting method of t1 and t2 will be described later.
  • the ultrasonic sensor control unit of the first substrate 48 transmits an ultrasonic sensor horizontal drive signal to the horizontal rotation motor driver 62 to cause the horizontal rotation motor 44 to operate.
  • the ultrasonic sensor vertical drive signal is transmitted to the vertical rotation motor driver 64 to drive the vertical rotation motor 46, thereby changing the address to be measured.
  • I and j in Table 5 indicate addresses to be measured, and the vertical angle and the horizontal angle are the above-described depression angle ⁇ and the angle ⁇ measured rightward from the left reference line when viewed from the indoor unit. Each is shown. That is, when viewed from the indoor unit, each address is set in the range of 5 to 80 degrees in the vertical direction and 10 to 170 degrees in the horizontal direction, and the ultrasonic sensor 32 measures each address and scans the living space. .
  • Table 6 shows the scanning order at the start of the operation of the air conditioner. Distance measurement is performed in this order at each address from address [0, 0] to address [32, 0], and then the address [32, 1] to address [0,1] and further from address [0,2] to address [32,2] (that is, in the range of depression angle 5 to 15 °), the distance is measured and the air conditioner is started. The scan ends. By this scanning, the distance from the air conditioner to the wall surface of the living space is measured (wall detection processing).
  • the operation of the air conditioner is stopped, scanning is performed for each distance region from the air conditioner (three sections of near, medium, and far distance described later).
  • the long distance is from address [0, 1] to address [32, 1], then from address [32, 2] to address [0, 2], and from address [0, 3] to address [32, 3]. ].
  • the depression angle range of 10 to 20 ° is scanned.
  • the medium distance is in the same order as the long distance, and the depression angle of 15 to 30 ° from the address [0, 2] to the address [0, 5] is the same as the short distance, and the address [0, 4] to the address [0].
  • 32, 12] is scanned within a depression angle range of 25 to 65 °.
  • Table 7 shows the scanning order of the short distance.
  • the series of scans for each distance is performed once when the operation is stopped. That is, the scanning of the entire area is completed when the operation is stopped three times. By this scanning, the presence or absence of an obstacle in the living space is detected from the air conditioner (obstacle detection process).
  • a case where scanning is performed every three distances will be described as an example. However, subdivided areas A to G or blocks (blocks N, R, C, and L described later) and fields (described later) are described. It is also possible to scan every field 1-5).
  • the entire scanning of the living space by the ultrasonic sensor 32 is performed separately when the operation of the air conditioner is started and when the operation is stopped.
  • the distance between the air conditioner and the wall surface and the presence / absence of an obstacle are determined. This is for efficiently performing. That is, when the operation is stopped, all the movable elements such as the compressor are stopped, and it is less susceptible to noise than when the air conditioner is started. Therefore, the environment is relatively preferable for measuring the detection processing distance by the ultrasonic sensor 32. It can be said that if the entire scanning of the living space is performed only when the operation of the air conditioner is stopped, the ultrasonic sensor 32 does not scan at the start of the operation. This is because the scanning time becomes long.
  • the reason why the scanning at the start of the operation of the air conditioner is limited to within 15 degrees of depression is only in the region where there is a high possibility that there is a person at the start of the operation of the air conditioner, that is, there is a high possibility that the person will not be detected. This is because the measurement data can be used effectively by scanning the area where the wall is located (since the person is not an obstacle, the data of the area where the person is present is not used as described later).
  • step S31 the horizontal rotation motor 44 and the vertical rotation motor 46 that drive the ultrasonic sensor 32 are initialized.
  • the address [0, 0] is set to the origin position
  • the address [16, 0] is set to the center position
  • the horizontal rotation motor 44 and the vertical rotation motor 46 are reset at the origin position, This is the control to stop at the center position.
  • step S32 an ultrasonic sensor for determining whether or not there is an abnormality such as a disconnection or incorrect connection of the lead wires.
  • an ultrasonic sensor for determining whether or not there is an abnormality such as a disconnection or incorrect connection of the lead wires.
  • step S35 the motors 44 and 46 are set. It is determined whether the target position is set. If it is determined that the target position is set in step S35, the process proceeds to step S36. If it is determined that the target position is not set, the horizontal rotation motor 44 and the vertical rotation motor are determined in step S37. After performing the driving process 46, the process returns to step S35.
  • step S36 a predetermined time (for example, 1 second) is waited, and noise detection processing is performed in step S38.
  • the reason for waiting for a predetermined time is that the ultrasonic sensor is a sensor that uses a piezoelectric phenomenon caused by a piezoelectric body, so as to avoid the influence of vibration of the motor for rotation.
  • the ultrasonic sensor 32 is easily affected by acoustic noise and electromagnetic noise, the presence or absence of noise influence from the surrounding environment is determined and the process proceeds to the distance measurement operation.
  • the noise detection process will be described with reference to the timing charts of FIGS.
  • the noise detection process is a process in which a predetermined sound wave reception period (for example, 100 ms) for detecting noise from the surrounding environment is provided before the ultrasonic transmission signal is transmitted, and only reception is performed without transmitting ultrasonic waves. Accordingly, the ultrasonic transmission signal is set to L level (not transmitted), and the reception permission signal is set to H level (reception permission).
  • the ultrasonic reception signal when a predetermined time (for example, 100 ms) has elapsed from the start of noise detection is read twice, and is read twice as shown in FIG. ) Is determined as “no noise”, while it is determined as “no noise” when the level is L (noise is equal to or greater than a threshold) as shown in FIG.
  • step S39 it is determined whether or not there is noise. If it is determined that there is no noise, the process proceeds to step S40. If it is determined that there is noise, the process proceeds to step S41. To do.
  • step S40 data is acquired eight times at the same address, and it is determined whether distance measurement based on the acquired data is completed. If it is determined that distance measurement is not completed, step S42 is performed. After performing the transmission process, a reception process is performed in step S43, and the process returns to step S40. Conversely, if it is determined in step S40 that the measurement has been completed eight times, a distance number determination process is performed in step S44.
  • the first substrate 48 and the second substrate 50 function as an obstacle position detection unit.
  • step S45 determines whether it is the final address. If it is determined in step S45 that it is not the final address, in step S47, the horizontal rotation motor 44 and the vertical rotation motor 46 are driven to move the ultrasonic sensor 32 to the next address, and step S35. Return to.
  • step S41 the previous distance data stored in the first substrate 48 is replaced with the current distance.
  • the data is confirmed (measurement data is not updated), and after waiting for a predetermined time (for example, 0.8 s) in step S48, the process proceeds to step S47.
  • step S48 The reason why the standby time is provided in step S48 is to make the total consumption time at each address substantially constant. That is, when there is noise, the processing in steps S40, S42, S43, and S44 is not performed. Therefore, if no standby time is provided, the consumption time is shortened compared to the case without noise, and the ultrasonic sensor 32 This is because the operation becomes unnatural. Further, the occupant can be provided with a sense of security by scanning the entire obstacle position determination area and controlling the obstacle detection device so that the total consumption time at each address is substantially constant.
  • the transmission process in step S42 and the reception process in step S43 will be described with reference to the timing chart of FIG. Since the circuit operation is as described above with reference to FIG. 17, a method for acquiring data of the wall detection process will be described here.
  • the ultrasonic transmission signal for example, a 50 kHz signal with 50% duty is transmitted for 2 ms, and after 100 ms, the ultrasonic transmission signal is transmitted again, and this is repeated, and the ultrasonic transmission signals are transmitted a total of eight times at each address.
  • the reason why the measurement interval is set to 100 ms is that the time interval of 100 ms is a time in which the influence of the reflected wave by the previous transmission process can be ignored.
  • the air conditioner measures the sleeve wall (left or right wall) direction, and when ⁇ is 75 to 105 °, it measures the distance to the front wall surface. It is taken into consideration.
  • t1 14 ms is because the influence of the reverberation signal is removed and the transmission output of the ultrasonic sensor as described above is reflected multiple times (between relatively close objects). This is to eliminate the influence of the side lobe generated by. If it is 14 ms, the minimum detection distance is about 2.4 m, and a short side length of about 2.7 m between 6 tatami mats can be detected.
  • t2 44 ms (detection distance: about 7.6 m) is because the distance between the wall surfaces is about 7.5 m, assuming that the air conditioner is installed in a 22 tatami room.
  • the ultrasonic wave reception signal input process (output from the latch circuit unit 60) is read a plurality of times, for example, every 2 ms, and the number of counts is N when the reading coincides twice and is L level to prevent erroneous determination due to noise or the like.
  • a value obtained by subtracting 1 from (N ⁇ 1) is a distance number (ultrasonic propagation round-trip time).
  • step S44 the distance number determination process in step S44 will be described.
  • the distance number for 8 times is determined at each address [i, j], the three distance numbers are removed in order from the largest and the three distance numbers are removed in order from the smallest, and the average value of the remaining two distance numbers is taken. Confirm the number.
  • the average value is rounded up to the integer value, and the actual measurement distance corresponding to the distance number determined in this way is shown in Table 9.
  • the distance number is an integer value from 0 to 22, and the ultrasonic propagation round-trip time corresponding to each distance number is set as shown in Table 9.
  • the distance corresponding to each distance number has a range shown in Table 9 because the signal level of the ultrasonic transmission signal is read every 2 ms.
  • eight distance numbers are determined at each address, except for three distance numbers, each taking the average value of the remaining two distance numbers, and the distance number is determined.
  • the distance number determined by each address is not limited to eight, and the distance number taking an average value is not limited to two. Further, the maximum value of the eight distance numbers may be determined as the distance number.
  • the distance measurement to the obstacle such as furniture is performed when the operation of the air conditioner is stopped, and the flowchart of FIG. 22 is shown for the distance measurement (in the case of short distance) to the obstacle when the operation of the air conditioner is stopped.
  • the description will be given with reference. Note that the flowchart of FIG. 22 is very similar to the flowchart of FIG. 18, so only different steps will be described below.
  • the reception process in the case of obstacle detection in step S64 will be described with reference to the timing chart of FIG.
  • the L level (reception prohibited) is set to be output t2 + 2 ms after the start of ultrasonic transmission.
  • Table 10 is set according to the angle in the vertical direction (the depression angle, the angle measured downward from the horizontal line) ⁇ and the distance corresponding to the area to be scanned (the relationship between the area and the distance will be described later).
  • FIG. 24 is an elevation view of a certain living space (longitudinal sectional view passing through the ultrasonic sensor 32), and a floor surface is 2 m below the ultrasonic sensor 32.
  • Obstacles to be detected are tables and counters with a height of 0.7 to 1.2 m from the floor, and the shortest distance (meaning near, middle, and far distance) of the thinnest part in the shaded area in the figure Represents the range in which obstacles in the height range described above can be detected (detected detection range), and the shaded area in the middle color and the darkest shaded area are assumed to detect medium distance and long distance, respectively.
  • the reception permission signal is set to L level (reception prohibited), so the ultrasonic reception signal does not become L level. . That is, it is possible to exclude the influence of side lobes and the reflected waves from objects other than the target obstacles described above.
  • step S65 Similar to the case of wall detection processing, data is repeatedly acquired 8 times at the same address, but if there are 3 or more obstacles out of 8 times, the presence of an obstacle is determined at the address. If it is less than or there is noise, it is determined that there is no obstacle. By performing such data determination processing, transient noise can be excluded and highly reliable obstacle detection can be performed.
  • the presence / absence of an obstacle is determined based on the result of the presence / absence of eight obstacles at each address, but the presence / absence of obstacles is determined three or more times. However, the number of times may be changed according to the noise environment of the device to be used.
  • step S60 the distance measurement to the obstacle when the operation of the air conditioner is stopped is different from that at the start of operation in step S60. If it is determined in step S59 that there is no noise, the current address [ If it is determined that there is no person in the area corresponding to i, j] (any one of the areas A to G shown in FIG. 5), the process proceeds to step S61. Proceeds to step S62. That is, since the person is not an obstacle, the address corresponding to the area determined to have a person uses the previous distance data without performing distance measurement (does not update the distance data), and determines that there is no person. The distance is measured only at the address corresponding to the designated area, and the newly measured distance data is used (distance data is updated).
  • an obstacle in each obstacle position determination area is determined according to the result of the presence / absence determination of a person in the person position determination area corresponding to each obstacle position determination area
  • the presence / absence determination of an obstacle is efficiently performed. More specifically, in the obstacle position determination area belonging to the human position determination area determined that there is no person by the human body detection device, the previous determination result by the obstacle detection device is updated with a new determination result, In the obstacle position determination area belonging to the human position determination area determined that there is a person by the human body detection device, the previous determination result by the obstacle detection device is not updated with a new determination result.
  • the distance to the obstacle is measured separately when the air conditioner is started and when it is stopped. Since noise may adversely affect the ultrasonic sensor 32, the distance measurement of the ultrasonic sensor 32 at all addresses may be performed when the operation of the air conditioner is stopped.
  • a time setting unit may be provided in a remote control (remote control device) for remotely operating the air conditioner, and distance measurement by the ultrasonic sensor 32 may be started at the time set by the time setting unit.
  • a remote control remote control device
  • distance measurement by the ultrasonic sensor 32 may be started at the time set by the time setting unit.
  • the air conditioner is operating at the time set by the time setting means
  • the compressor or the indoor fan 8 is stopped at the time set by the time setting means without starting the distance measurement.
  • the areas A to G shown in FIG. 5 belong to the following blocks, respectively.
  • Block N Region A Block R: Regions B and E Block C: Regions C and F Block L: Regions D and G Regions A to G belong to the following fields, respectively.
  • Field 1 Area A Field 2: Regions B and D Field 3: Region C Field 4: Regions E and G Field 5: Region F Furthermore, the distance from the indoor unit is defined as follows.
  • Table 11 shows the target setting angles at the positions of the five left blades and the five right blades constituting the left and right blades 14, and the symbols attached to the numbers (angles) are as shown in FIG.
  • a case where the left or right blade is directed inward is defined as a plus (+, no sign in Table 11) direction, and a case where the left or right blade is directed outward is defined as a minus ( ⁇ ) direction.
  • the “heating B area” in Table 11 is a heating area where obstacle avoidance control is performed, and the “normal automatic wind direction control” is wind direction control where obstacle avoidance control is not performed.
  • the determination as to whether or not to perform the obstacle avoidance control is based on the temperature of the indoor heat exchanger 6.
  • the wind direction control is not applied to the occupant, and when it is too high, the maximum air volume position is determined.
  • wind direction control to the heating B area is performed.
  • “temperature is low”, “too high”, “wind direction control that does not apply wind to the occupant”, and “wind direction control at the maximum airflow position” have the following meanings.
  • -Low temperature The temperature of the indoor heat exchanger 6 is set to the skin temperature (33 to 34 ° C) as the optimum temperature, and a temperature that can be lower than this temperature (for example, 32 ° C).
  • -Too high temperature for example, 56 ° C or higher
  • Wind direction control that causes the wind to flow along the ceiling by controlling the angle of the upper and lower blades 12 so as not to send the wind to the living space
  • -Wind direction control at the maximum airflow position When the air conditioner bends the airflow with the upper and lower blades 12 and the left and right blades 14, resistance (loss) is always generated, so the maximum airflow position is the wind direction where the loss is close to zero.
  • Table 12 shows target setting angles in the fields of the upper and lower blades 12 when performing obstacle avoidance control.
  • the upper blade angle ( ⁇ 1) and the lower blade angle ( ⁇ 2) are downward angles (declining angles) measured from the horizon.
  • the swinging motion is a swinging motion of the left and right blades 14, and basically swinging with a predetermined left-right angle width around one target position and having no fixed time at both ends of the swing. is there.
  • the position stop operation means that the target setting angle (an angle in Table 10) of a certain position is corrected as shown in Table 13 to be the left end and the right end, respectively.
  • the left end and the right end each have a wind direction fixing time (time for fixing the left and right blades 14). For example, when the wind direction fixing time has elapsed at the left end, the movement to the right end, The wind direction at the right end is maintained, and after the fixed time of the wind direction has passed, it moves to the left end and repeats it.
  • the wind direction fixing time is set to 60 seconds, for example.
  • the set angles of the left and right blades 14 corresponding to the left end and the right end of each block are determined based on, for example, Table 14.
  • the operation has a fixed wind direction at the left and right ends of each block.For example, when the fixed wind direction has elapsed at the left end, it moves to the right end and maintains the right wind direction until the fixed wind direction has elapsed at the right end. Then, after the elapse of the wind direction fixing time, it moves to the left end and repeats it.
  • the wind direction fixing time is set to 60 seconds, for example, similarly to the position stop operation. Since the left end and the right end of each block coincide with the left end and the right end of the person position determination area belonging to the block, the block stop operation can be said to be a stop operation of the person position determination area.
  • position stop operation and block stop operation are properly used according to the size of the obstacle.
  • the obstacles in front are small, the position is stopped around the position where there are obstacles to avoid obstacles and blow, whereas the obstacles in front are large, for example, in front of the area where people are When there is an obstacle, the air is blown over a wide range by performing a block stop operation.
  • the swing operation, the position stop operation, and the block stop operation are collectively referred to as the swing operation of the left and right blades 14.
  • the human body detection device determines that a person is only in a single region
  • the human body detection device determines that there is a person.
  • the obstacle detection device determines that there is an obstacle in the obstacle position determination area located in front of the person position determination area
  • the air flow control is performed to control the upper and lower blades 12 to avoid the obstacle from above. ing.
  • the obstacle detection device determines that there is an obstacle in the obstacle position determination region belonging to the human position determination region determined that there is a person by the human body detection device, the person position determination determined that there is a person.
  • the left and right blades 14 are swung within at least one obstacle position determination region belonging to the region, and the fixing time of the left and right blades 14 is not provided at both ends of the swing range.
  • the left and right blades 14 are swung within at least one obstacle position determining region belonging to the person position determining region or the human position determining region adjacent to the region, and fixed times of the left and right blades 14 are provided at both ends of the swing range.
  • One of the two airflow controls is selected.
  • both the left blade and the right blade have 10 degrees. It continues to swing (swing) without stopping in the center at an angle range of ⁇ 10 degrees.
  • the timing of swinging the left and right blades to the left and right is set to be the same, and the swinging motions of the left and right blades are linked.
  • the first airflow control is performed by swinging the target setting angles of two positions without obstacles at both ends to basically air-condition a position without obstacles.
  • the block N is operated in a block stop and the second airflow control is performed. This is because the block stop operation is more directional and can reach far away than the entire area, and there is a high possibility of avoiding obstacles. That is, even when obstacles are scattered in the area A, there is usually a gap between the obstacles, and the air can be blown through the gap between the obstacles.
  • the first airflow control is performed by swinging left and right. For example, when there is a person in the region D and there is an obstacle only at the position D2, the swing operation is performed to the left and right around the target setting angle of the position D1.
  • the block including the area where the person is present is operated to stop the block and the second air flow control is performed.
  • the block L is operated while being stopped.
  • the first airflow control is performed by performing a swing operation around the target setting angle in a position where there is no obstacle in the middle distance region. For example, if there is a person in the area E and there is an obstacle at the position B2 and there are no obstacles on both sides, but there are obstacles behind it, it is advantageous to send airflow from the position B1 where there is no obstacle. .
  • the first airflow control is performed by swinging around the target setting angle of the position where there is no obstacle . For example, if there is a person in the area F, there is an obstacle in position C2, there is an obstacle in position D1 of both sides of position C2, and there is no obstacle in C1, the obstacles from position C1 to position C2 where there is no obstacle Airflow can be sent to area F while avoiding objects.
  • the block including the area where the person is present is operated in block stop to perform the second air flow control.
  • the block C is operated in a block stop state. In this case, since there is an obstacle ahead of the person and there is no way to avoid the obstacle, the block stop operation is performed regardless of whether there is an obstacle in the block adjacent to the block C.
  • the first airflow control is performed by swinging around the target setting angle of the other position where there is no obstacle. For example, if there is a person in the area F, there are no obstacles in the positions C1, C2, and F1, and there is an obstacle in the position F2, the front of the area F in which the person is present is open. Considering this, air conditioning is performed around the far-off position F1 without an obstacle.
  • an ultrasonic wave is transmitted from the ultrasonic sensor 32 toward an address different from the address [i, j] shown in Table 5, and the reflected wave is detected, and the positions of the front wall and the left and right walls are detected. Is first recognized.
  • ultrasonic waves are transmitted toward the front in a substantially horizontal direction, the reflected wave is detected, the distance to the front wall is measured, and the distance number is obtained. Furthermore, an ultrasonic wave is transmitted toward the left side in a substantially horizontal direction, the reflected wave is detected, the distance to the left wall is measured, the distance number is obtained, and the distance number of the right wall is obtained in the same manner.
  • FIG. 26 is a top view of a room to which an indoor unit is attached, and shows a case where a front wall WC, a left wall WL, and a right wall WR exist on the front, left, and right sides as viewed from the indoor unit. ing.
  • the numbers on the left side of FIG. 26 indicate the distance numbers of the corresponding cells, and Table 16 indicates the distances from the indoor unit to the near and far points corresponding to the distance numbers.
  • the “obstacle” used in the present specification is assumed to be furniture such as a table and a sofa, a TV, an audio, and the like.
  • the distance to the front, left end, and right end of the indoor unit is detected within a depression angle of 15 degrees. It is assumed that there is a wall on the extension including the position.
  • the left wall WL is at an angle of 10 ° and 15 °
  • the front wall WC is at an angle of 75 ° to 105 °
  • the right wall WR is at an angle of 165 ° and 170 °. Since it can be estimated that each exists, the addresses corresponding to the viewing angle in the horizontal direction within the depression angle of 15 degrees among the addresses shown in Table 5 are as follows.
  • the maximum values in Table 17 (WC: 5, WL: 6, WR: 3) can be adopted.
  • a room large room with a long distance from the indoor unit to the front wall WC, the left wall WL, and the right wall WR is air-conditioned, and a wider space is set as a target for air-conditioning control. Can do.
  • the temperature setting is lower than the setting temperature set by the remote control I do.
  • the set temperature is set to a low value by a first predetermined temperature (for example, 2 ° C.).
  • a first predetermined temperature for example, 2 ° C.
  • B. When a person is in a long-distance area Since the long-distance area is far from the indoor unit and has a large area, the degree of increase in room temperature is lower than that in the short-distance area or medium-distance area.
  • the set temperature is set to a low level by a second predetermined temperature (for example, 1 ° C.) lower than the first predetermined temperature.
  • the long-distance area has a large area, even if it is detected that there is a person and a wall in the same person position determination area, there is a possibility that the person and the wall are separated. Only in this case, the human wall proximity control is performed, and the temperature shift is performed according to the positional relationship between the person and the wall.
  • an ultrasonic distance sensor is used as the distance detection means, but a photoelectric distance sensor can be used instead of the ultrasonic distance sensor.
  • the air conditioner according to the present invention is provided with subdivided human position determination areas and obstacle position determination areas, and efficiently performs the presence / absence determination of persons and the presence / absence determination of obstacles in each area. Since air conditioning efficiency can be improved by finely controlling the wind direction changing means based on the above, it is particularly useful as an air conditioner for general households.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Remote Sensing (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • General Physics & Mathematics (AREA)
  • Air Conditioning Control Device (AREA)
  • Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)

Abstract

L'invention porte sur un conditionneur d'air dans lequel un dispositif de détection de corps humain destiné à détecter la présence ou l'absence d'un être humain et un dispositif de détection d'obstacle destiné à détecter la présence ou l'absence d'un obstacle sont disposés dans une machine intérieure, de telle sorte qu'un moyen de modification de la direction du vent disposé dans la machine intérieure est commandé en fonction d'un signal détecté par le dispositif de détection de corps humain et d'un signal détecté par le dispositif de détection d'obstacle. Dans le dispositif de détection d'obstacle sont disposés un capteur à ultrasons destiné à émettre/recevoir des ondes ultrasonores et une période d'autorisation de réception pendant laquelle un signal d'émission est émis vers le capteur à ultrason et pendant laquelle la réception n'est autorisée que pendant une période prédéterminée après l'émission du signal d'émission, de telle sorte qu'on estime la présence ou l'absence d'un obstacle en fonction d'un signal de réception d'onde acoustique pendant la période autorisée de réception.
PCT/JP2010/003185 2009-05-19 2010-05-11 Conditionneur d'air et dispositif de détection d'obstacle WO2010134283A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2009120589A JP2010270919A (ja) 2009-05-19 2009-05-19 空気調和機および障害物検知装置
JP2009-120589 2009-05-19

Publications (1)

Publication Number Publication Date
WO2010134283A1 true WO2010134283A1 (fr) 2010-11-25

Family

ID=43125977

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2010/003185 WO2010134283A1 (fr) 2009-05-19 2010-05-11 Conditionneur d'air et dispositif de détection d'obstacle

Country Status (2)

Country Link
JP (1) JP2010270919A (fr)
WO (1) WO2010134283A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107450390A (zh) * 2017-07-31 2017-12-08 绵阳美菱软件技术有限公司 一种智能家电控制装置、控制方法及控制系统

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20210100355A (ko) 2020-02-06 2021-08-17 엘지전자 주식회사 공기 조화기 및 이의 제어 방법

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63143449A (ja) * 1986-12-06 1988-06-15 Daikin Ind Ltd 空気調和機
JPH0372249U (fr) * 1989-11-16 1991-07-22
JP2003279640A (ja) * 2002-03-22 2003-10-02 Aioi Systems Co Ltd 移動体の位置検出システム及び方法
JP2006317185A (ja) * 2005-05-10 2006-11-24 Denso Corp 障害物検知装置

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63143449A (ja) * 1986-12-06 1988-06-15 Daikin Ind Ltd 空気調和機
JPH0372249U (fr) * 1989-11-16 1991-07-22
JP2003279640A (ja) * 2002-03-22 2003-10-02 Aioi Systems Co Ltd 移動体の位置検出システム及び方法
JP2006317185A (ja) * 2005-05-10 2006-11-24 Denso Corp 障害物検知装置

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107450390A (zh) * 2017-07-31 2017-12-08 绵阳美菱软件技术有限公司 一种智能家电控制装置、控制方法及控制系统
CN107450390B (zh) * 2017-07-31 2019-12-10 合肥美菱物联科技有限公司 一种智能家电控制装置、控制方法及控制系统

Also Published As

Publication number Publication date
JP2010270919A (ja) 2010-12-02

Similar Documents

Publication Publication Date Title
JP4524328B2 (ja) 空気調和機
JP5405901B2 (ja) 空気調和機
JP5426235B2 (ja) 空気調和機
JP5336931B2 (ja) 空気調和機
JP4983882B2 (ja) 空気調和機
JP5267408B2 (ja) 空気調和機
JP4410302B1 (ja) 空気調和機
JP4454683B1 (ja) 空気調和機
JP4410301B1 (ja) 空気調和機
JP5254881B2 (ja) 空気調和機
JP2010276232A (ja) 空気調和機
JP5267395B2 (ja) 空気調和機
JP5126189B2 (ja) 空気調和機
JP4410303B1 (ja) 空気調和機
WO2010134283A1 (fr) Conditionneur d'air et dispositif de détection d'obstacle
JP5420302B2 (ja) 空気調和機
JP4410295B1 (ja) 空気調和機
JP5388726B2 (ja) 空気調和機
JP4503093B1 (ja) 空気調和機
JP5405925B2 (ja) 空気調和機
JP5249010B2 (ja) 空気調和機
JP5336951B2 (ja) 空気調和機
JP5426917B2 (ja) 空気調和機
JP2011017459A (ja) 空気調和機

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 10777523

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 10777523

Country of ref document: EP

Kind code of ref document: A1