WO2020096075A1 - Capteur infrarouge directionnel pour détecter une direction de mouvement à l'aide d'un phénomène de trou d'épingle - Google Patents

Capteur infrarouge directionnel pour détecter une direction de mouvement à l'aide d'un phénomène de trou d'épingle Download PDF

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Publication number
WO2020096075A1
WO2020096075A1 PCT/KR2018/013373 KR2018013373W WO2020096075A1 WO 2020096075 A1 WO2020096075 A1 WO 2020096075A1 KR 2018013373 W KR2018013373 W KR 2018013373W WO 2020096075 A1 WO2020096075 A1 WO 2020096075A1
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WIPO (PCT)
Prior art keywords
pinhole
sensing
infrared
signal
sensing element
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Application number
PCT/KR2018/013373
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English (en)
Korean (ko)
Inventor
박타흥
Original Assignee
(주)티엔에치넷
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.)
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Application filed by (주)티엔에치넷 filed Critical (주)티엔에치넷
Priority to KR1020187032489A priority Critical patent/KR102113188B1/ko
Priority to PCT/KR2018/013373 priority patent/WO2020096075A1/fr
Publication of WO2020096075A1 publication Critical patent/WO2020096075A1/fr

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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
    • G01J5/10—Radiation pyrometry, e.g. infrared or optical thermometry using electric radiation detectors
    • G01J5/34—Radiation pyrometry, e.g. infrared or optical thermometry using electric radiation detectors using capacitors, e.g. pyroelectric capacitors
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J1/00—Photometry, e.g. photographic exposure meter
    • G01J1/42—Photometry, e.g. photographic exposure meter using electric radiation detectors
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
    • G01J5/02—Constructional details
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
    • G01V8/00—Prospecting or detecting by optical means
    • G01V8/10—Detecting, e.g. by using light barriers
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J1/00—Photometry, e.g. photographic exposure meter
    • G01J1/42—Photometry, e.g. photographic exposure meter using electric radiation detectors
    • G01J2001/4242—Modulated light, e.g. for synchronizing source and detector circuit

Definitions

  • the present invention utilizes the principle of a pinhole camera to produce a compact size, while increasing the directivity of the infrared detection sensor and increasing the amount of light irradiated to the sensing element. It relates to an infrared detection sensor.
  • a Pyroelectric Infrared Sensor is a sensor that detects when an object emitting infrared rays moves at a certain distance. Since a human body having a body temperature of about 37 ° C usually emits infrared rays with a wavelength of 7.5 to 13.5 ⁇ m, a human body sensor using infrared rays senses wavelengths in this band.
  • the infrared detection sensor 10 is a first sensing element (10a) for outputting the wavelength value of the infrared light detected by the heat emitter as a positive or negative value, and heat dissipation
  • the second sensing element 10b and the first sensing element 10a and the second sensing element 10b that output a wavelength value of infrared light sensed by the body as a negative or positive value opposite to the first sensing element 10a ) Is a power supply that supplies power to the body 11 with a field-effect transistor (FET) that outputs a sensing signal in accordance with the output signal of the body 11 and one side of the body 11
  • FET field-effect transistor
  • the pins (1, 2) and the output pin (3) for outputting a detection signal and the body (11) are diffused with infrared rays emitted from a heat emitter to widen the detection area of the heat emitter and increase the detection area.
  • Diffusion filter (5) It detects the presence of a heat emitter.
  • Such an infrared sensor is used in an automatic lighting control device that controls a spot light of a lighting lamp according to whether a person enters the indoor space or not.
  • Korean Patent Publication No. 1996-0016640 which is a prior art related to such an automatic lighting control device, an indoor light is turned on when a person entering the indoor space is detected, and if a movement of a person is not detected after a predetermined period of time is automatically detected, Disclosed is an indoor light blinking control device for detecting a human body to be extinguished.
  • Such a technique has a problem in that it is possible to judge the presence or absence of a heat emitter having infrared rays, and the number of the heat emitters or whether to enter or exit the heat emitters.
  • Republic of Korea Patent Publication No. 10-2007-0013094 is configured to determine the entry and exit at the entrance by four sensor relays composed of infrared sensor, and to distinguish the number of people by the heat sensor.
  • the sensor relays and the thermal sensor have a wide directivity, the detection capability is good, but the width of the detection area SW is at least 3 m to 5 m, as shown in FIG. 2, and is considerably wide.
  • each infrared detection sensor detects the movement of the heat emitting body outside the area where the door is located, and the common sensing area Since the detection signals that cannot distinguish the entry and exit in (CW) are output, it is impossible to accurately determine the entry and exit of the heat emitting body, and the user has no problem in adjusting the width of the detection area.
  • Republic of Korea Patent Registration No. 10-1664934 was developed by the inventor of the present invention, as shown in [Fig. 3], the outer body of the infrared sensing sensor 11 and the outer body of the infrared sensing sensor 11 extended to the lower side It relates to an infrared detection sensor capable of adjusting the detection area with directivity by narrowly adjusting the width of the sensing area of the heat emitting body according to the length of the infrared blocking unit 100 by mounting the infrared blocking unit 100.
  • This technology allows the infrared sensor to have directivity, so it can accurately determine the direction and number of the human body.
  • the present invention is to improve the Republic of Korea Patent Registration No. 10-1664934, the Republic of Korea Patent Registration No. 10-1664934 is configured to increase the length of the infrared cut-off portion surrounding the infrared sensor body, the narrower the detection area width of the heat dissipation body It is intended to improve the directionality, but it has been pointed out as a practical problem that a long infrared block is configured.
  • the present invention solves the problem of Korean Patent Registration No. 10-1664934 by using a pin hole phenomenon, while utilizing a point in which a focal length is adjusted according to the diameter of the pin hole and maintaining a narrow detection area through a slight defocusing.
  • the aim is to greatly adjust the focus of the infrared light emitted from the heat radiator (human body) to the size of the sensing element and induce the infrared sensor to have the maximum detection capability.
  • the sensing element of the general infrared sensor is installed at an angle of 45 °, but in the present invention, the first and second sensing elements are horizontally installed side-by-side to be configured to detect the direction of movement of the heat dissipation body.
  • the first and second sensing elements on the front surface are horizontally spaced apart from each other;
  • the present invention provides a "directional infrared sensing sensor using a pinhole phenomenon, characterized in that the first and second sensing elements are vertically long rectangular, and the pinhole is formed in a vertical long hole shape".
  • H 1 is the distance from the ground to the pinhole
  • d 1 is The distance between the vertical center lines of the first and second elements, SW, means the width of the infrared detection area detected from the heat radiator.
  • the pinhole characteristic reduces the focal length, and the defocusing increases the area irradiated with infrared rays to the sensing element, and the overall size of the sensor component is reduced compactly, reducing the restrictions on the product planning.
  • Korean Patent Registration No. 10-1664934 had a concern about contamination of the sensing element due to the external environment due to the opening formed in the front of the infrared cut-off part, but in the present invention, the exposure of the sensing element to the outside is minimized by the cover plate.
  • 1 is a configuration diagram of a general infrared detection sensor.
  • FIG. 2 is a schematic diagram showing the detection areas of two infrared detection sensors of the prior art (Republic of Korea Patent Publication No. 10-2007-0013094).
  • FIG. 3 is a schematic diagram showing a configuration for improving the directivity of infrared detection in the prior art (Republic of Korea Patent No. 10-1664934).
  • FIG. 4 shows an embodiment of an infrared detection sensor using a pinhole phenomenon provided by the present invention.
  • FIG. 5 is a comparison between the prior art (Republic of Korea Patent No. 10-1664934) and the principle of the present invention.
  • FIG. 6 shows the focus shape according to the shape of the pinhole.
  • FIG. 7 is a conceptual diagram showing the infrared sensing action according to the movement of the heat emitting body (human body) of the sensor of the present invention.
  • FIG. 8 is a configuration diagram of a counting device using the sensor of the present invention.
  • FIG. 9 is a waveform diagram for explaining the operation of the counting device of FIG. 8.
  • the main body of the rectangular first and second sensing elements elongated in the vertical direction spaced horizontally side by side on the front surface;
  • a pinhole formed in a longitudinal hole shape on the cover plate of the casing It consists of,
  • the first sensing element outputs a wavelength value of infrared light sensed by the heat emitter as a positive or negative value
  • the second sensing element outputs a signal having a phase opposite to the first sensing element
  • the body is equipped with a field effect transistor that outputs a sensing signal (SEN) according to the output signals of the first and second sensing elements.
  • SEN sensing signal
  • the present invention is "the first and second sensing elements (10a, 10b) on the front body 11 is arranged side by side spaced apart; The body is inserted into the hollow hole 301 formed in the front-rear direction so that the rear surface of the body closes the rear end of the hollow hole 301, and the front end of the hollow hole 301 is a casing closed with a cover plate 202.
  • Figure 4 shows the appearance of an embodiment of the infrared sensor using the pinhole phenomenon provided by the present invention (hereinafter 'invention sensor').
  • the casing 300 may be configured in a box shape, but its outer shape may be variously modified.
  • the first and second sensing elements 10a and 10b are horizontally spaced apart on the front surface of the body 11 inserted into the casing 300.
  • the first sensing element 10a outputs a wavelength value of infrared light sensed from the heat emitting body as a positive or negative value
  • the second sensing element 10b has a phase opposite to the first sensing element 10a. Outputs the signal of
  • a field effect transistor for outputting a sensing signal SEN according to the output signals of the first and second sensing elements 10a and 10b is built in the main body.
  • the sensor of the present invention maximizes the directivity of infrared detection by implementing an extremely narrow detection area using a pinhole phenomenon.
  • the amount of light incident through the pinhole is reduced, but the focal length is shortened to compensate for the loss of light.
  • the infrared sensing capability of the first and second sensing elements 10a and 10b does not deteriorate.
  • the shape of the focus is greatly adjusted according to the shape of the first and second sensing elements 10a and 10b, and accordingly, than the general circular pinhole.
  • a large amount of light (infrared rays) is incident, so that the first and second sensing elements 10a and 10b can improve infrared detection capability.
  • the sensor of the present invention is configured such that infrared rays emitted from a heat dissipation body (human body) reach the first and second sensing elements 10a and 10b through the pinhole 303, and the heat dissipation body (human body) moves. Accordingly, the focus of the infrared rays is also inverted to move horizontally. For example, if the heat dissipation body (human body) moves from right to left, the focus of infrared rays moves from left to right, so that the first sensing element 10a senses infrared light first, and then the second sensing element 10b It will detect infrared rays. According to the infrared sensing order of the first and second sensing elements 10a and 10b, the moving direction of the heat dissipation body (human body) may be grasped.
  • FIG. 5 is a comparison between the prior art (Republic of Korea Patent No. 10-1664934) and the principle of the present invention.
  • the length of the infrared cut-off part L is calculated by a formula such as H ⁇ d / SW (H: height from the ground to the position where the infrared sensor is installed, d: inner diameter of the infrared cut-out part, SW: width of the infrared sensing area).
  • the sensor of the present invention constitutes a casing 300 without an opening instead of the infrared blocking part, and forms a pinhole 303 on the cover plate 302 on the front surface of the casing 300, and the infrared radiation of the heat dissipation body is the pinhole. It was made to enter through 303. Since the position of the pinhole 303 is an intersection point of infrared rays, the length of the casing 300 is expressed as (L-L1) compared to the length of the infrared cut-off portion of the prior art (Republic of Korea Patent No. 10-1664394). Can be. That is, the casing 300 of the sensor of the present invention can be configured to be as short as L1 than the infrared blocking unit of the prior art.
  • focal length f which is the distance from the pinhole 203 to the front surface of the main body 11, can be accurately calculated by the following [Equation 1].
  • FIG. 6 shows the focus shape according to the shape of the pinhole.
  • the infrared focus shape is also circular, but if the pinhole 303 is a long hole in the vertical direction, it is defocused in the vertical direction, and the focus infrared focus shape is shown in (b) of FIG. 6. It becomes an oval as shown.
  • the first and second sensing elements 10a and 10b are formed in a vertically long rectangle, and the pinhole 203 is also formed in a vertically long hole shape, thereby providing the first and second sensing elements 10a and 10b.
  • the amount of light reaching can be increased.
  • FIG. 7 is a conceptual diagram showing an infrared sensing action according to the movement of a heat emitter (human body).
  • the first sensing element 10a and the second sensing element 10b of the infrared detection sensor 10 are respectively focused on the infrared rays according to the movement of the heat dissipation body M
  • the phases are inversely output with a time difference. For example, assuming that the first sensing element 10a outputs a negative phase and the second sensing element 10b outputs a positive phase, the column G for the gate T, which is the T1 region of FIG. 9, is opened.
  • the heat dissipator M enters the target space and then advances before passing through the central region of the gate G, in this case, the heat dissipator M After outputting both phases by the second sensing element 10b as an entrance, the second sensing element 10b is again generated as the advancement is made before the first sensing element 10a senses the infrared radiation of the heat dissipation body M ) Is operated to output both phases again, and the detection signal SEN outputs two positive phase signals. Therefore, in this case, it is judged as an error and no signal is output from the IN / OUT output terminal.
  • the sensor of the present invention comprises an amplification unit 210, a first comparison unit 220, a second comparison unit 230, a logical sum unit 240, a progress direction determination unit 250 configured as shown in FIG. 8, and It can be connected to the counting device 200 including the counter unit 260, and the counting device 200 can be built in the body 11 of the sensor of the present invention.
  • the amplification unit 210 receives the detection signal SEN, which is the output of the infrared detection sensor that varies the waveform of the sine wave, and detects the amplified signal by amplifying the signal detected by each element according to whether the heat emitter enters or exits.
  • the signal AS is output.
  • the first comparison unit 220 compares the amplified detection signal AS with the first reference voltage Vref1 having a positive voltage, and activates when the amplified detection signal AS is greater than the first reference voltage Vref1.
  • the first comparison signal CP1 is output, and when the amplified detection signal AS is smaller than the first reference voltage Vref1, the deactivated first comparison signal CP1 is output.
  • the second comparison unit 230 compares the amplified detection signal AS of the amplification unit 210 with the second reference voltage Vref2 having a negative voltage, so that the amplified detection signal AS is the second reference voltage. If it is less than (Vref1), the activated second comparison signal CP2 is output, and if the amplified detection signal AS is greater than the second reference voltage Vref2, the deactivated second comparison signal CP2 is output.
  • the logical summing unit 240 outputs a reference signal RS by logically summing the first comparison signal CP1 and the second comparison signal CP2.
  • the progress direction determining unit 250 is the first time at the time t1, t2, t3, t4, t5, t6, when the reference time (Tr) determined by the user has elapsed at the time when the reference signal (RS) is activated. It is determined whether the comparison signal CP1 and the second comparison signal CP2 are activated, and if there is an entry of the heat dissipator M to the gate G, the activated entry signal IN is output, and the gate If there is an advance of the heat radiator, the activated advance signal OUT is output.
  • the first comparison signal CP1 is activated at the time t1 when the reference time Tr has elapsed after the first activation of the reference signal RS, and the second comparison signal is activated. Since (CP2) is inactive, it can be seen that the heat emitter (M) is entering the target space, and it is removed from the time t2, which is the time when the reference time (Tr) has elapsed since the reference signal (RS) was activated for the second time. Since the 1st comparison signal CP1 and the 2nd comparison signal CP2 have signal values opposite to the t1 time point, the proceeding direction determining unit 250 enters the heat dissipator M for the gate G in the T1 section. After determining that this has been achieved, an entry signal IN that is activated for a predetermined time (for example, about 500 ms) is output.
  • a predetermined time for example, about 500 ms
  • the progress direction determining unit 250 displays T2. It is determined that the advance of the heat dissipator M to the gate G in the section is made and outputs the advance signal OUT activated for 500 ms.
  • the progress direction determining unit 250 determines that the heat dissipating body M is an error rather than entering or exiting the target space and entering and exiting the input signal IN All signals OUT output an inactive value.
  • the progress direction determining unit 250 is based on the reference signal RS and whenever the reference time Tr elapses after the reference signal RS is activated, that is, t1, t2, t3, t4, t5 , At the time t6, it is determined whether the first comparison signal CP1 and the second comparison signal CP2 are activated, respectively, and the entry and exit are determined.
  • the first comparison signal CP1 is activated at time t1, the second comparison signal CP2 is deactivated, the first comparison signal CP1 is deactivated at time t2, and the second comparison signal CP2 is activated.
  • the first comparison signal CP1 is deactivated at the time t3, which is the opposite of the entry, and the second comparison signal ( CP2) is activated, and only when the first comparison signal CP1 is activated and the second comparison signal CP2 is deactivated at time t4, the progress direction determining unit 250 determines the advancement and is activated.
  • the progression direction determining unit 250 does not output the entry signal IN or the entry signal OUT because it is determined as an error in all cases other than entry and exit.
  • the progress direction determining unit 250 can detect animals, and when the reference time Tr is set long, only the human body can be detected.
  • the traveling direction determining unit 250 uses one infrared detection sensor, and the infrared detection sensor is equipped with an infrared blocking unit 100 having directivity by reducing the width SW of the detection area, so that the detection area width ( The reduction of SW) makes it possible to accurately determine whether to enter and exit the target space even if one infrared sensor is used, as well as when multiple heat dissipators (M) enter or exit the target space at the same time. Since the width of the sensing area can be set small, the number of heat dissipators M can be accurately determined.
  • the counter unit 260 increases by 1 to the previous counter value when the entry signal IN output from the progress direction determining unit 250 is activated, and decreases by 1 from the previous counter value when the advance signal OUT is activated. It is possible to accurately calculate the number of heat dissipating bodies M remaining inside the target space.
  • the progress direction determining unit 250 may more accurately determine the entry / exit of the heat emitting body using the mask signal MASK.
  • the mask signal MASK is generated when infrared sensing is performed at a predetermined sensitivity or higher anywhere in the first and second sensing elements 10a and 10b. While the mask signal MASK is maintained, the progress direction determining unit 250 outputs an entry signal IN when the first comparison signal CP1 and the second comparison signal CP2 are sequentially activated, and the second When the comparison signal CP2 and the first comparison signal CP2 are sequentially activated, the advance signal OUT is output.
  • the proceeding direction determining unit 250 analyzes the signal waveform for the mask signal holding time (Wt, for example, 0.5 seconds), but within the mask signal holding time Wt, a normal entry signal IN or an advance signal OUT ) If the pattern is not detected, it is processed as an error signal.
  • the contents of comparing and amplifying the detection signals AS in the first and second sensing elements 10a and 10b with the first and second reference voltages Vref1 and Vref2 are as described above.
  • an infrared detection sensor having a narrow directivity is derived, and the present invention can be used as a count sensor for controlling the air conditioner, lighting, etc. by identifying the occupants.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geophysics (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Photometry And Measurement Of Optical Pulse Characteristics (AREA)
  • Geophysics And Detection Of Objects (AREA)

Abstract

La présente invention concerne un capteur infrarouge directionnel utilisant un phénomène de trou d'épingle, le capteur infrarouge directionnel ayant une taille compacte et utilisant un phénomène de trou d'épingle pour augmenter l'intensité de la lumière irradiée sur un élément de détection tout en améliorant la directionnalité du capteur infrarouge. Le capteur infrarouge directionnel utilisant un phénomène de trou d'épingle comprend : un corps principal comportant des premier et second éléments de détection qui sont agencés pour être séparés l'un de l'autre en parallèle sur la surface avant du corps principal; un boîtier ayant un trou creux fourni dans la direction avant et arrière, le corps principal étant inséré dans le trou creux de telle sorte que la surface arrière du corps principal ferme l'extrémité arrière du trou creux et une plaque de recouvrement ferme l'extrémité avant du trou creux; et un trou d'épingle formé dans la plaque de recouvrement du boîtier. Le premier élément de détection délivre une valeur de longueur d'onde de rayons infrarouges détectés à partir d'un corps de dissipation de chaleur sous la forme d'une valeur positive ou d'une valeur négative, et le second élément de détection délivre un signal ayant une phase opposée au premier élément de détection. Le corps principal contient un transistor à effet de champ, le transistor à effet de champ délivrant un signal de détection (SEN) en fonction des signaux de sortie des premier et second éléments de détection.
PCT/KR2018/013373 2018-11-06 2018-11-06 Capteur infrarouge directionnel pour détecter une direction de mouvement à l'aide d'un phénomène de trou d'épingle WO2020096075A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
KR1020187032489A KR102113188B1 (ko) 2018-11-06 2018-11-06 핀홀 현상을 이용한 이동방향 감지를 위한 지향성 적외선 감지 센서
PCT/KR2018/013373 WO2020096075A1 (fr) 2018-11-06 2018-11-06 Capteur infrarouge directionnel pour détecter une direction de mouvement à l'aide d'un phénomène de trou d'épingle

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PCT/KR2018/013373 WO2020096075A1 (fr) 2018-11-06 2018-11-06 Capteur infrarouge directionnel pour détecter une direction de mouvement à l'aide d'un phénomène de trou d'épingle

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Cited By (1)

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CN111862507A (zh) * 2020-07-30 2020-10-30 天津爱仕凯睿科技发展有限公司 热释电pir快速识别人体运动方向的方法及电路结构

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JPH06337154A (ja) * 1993-05-27 1994-12-06 Hitachi Ltd 赤外線源検知器及び該検知器を用いた居住環境制御装置
JPH0875216A (ja) * 1994-08-31 1996-03-19 Sharp Corp 空気調和機の人体検知方法
JP2012505425A (ja) * 2008-10-07 2012-03-01 オヌラ（オフィス ナシオナル デトゥードゥ エ ドゥ ルシェルシェ アエロスパシアル） 真空筐体内に統合された赤外線広視野撮像システム
KR20140042633A (ko) * 2013-03-25 2014-04-07 (주)아이엠 적외선센서모듈

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DE102012107739B4 (de) * 2012-08-22 2023-11-02 Avago Technologies International Sales Pte. Ltd. Sensorsystem zum Erkennen einer Bewegung einer Infrarotlichtquelle
KR101664934B1 (ko) * 2014-12-10 2016-10-13 주식회사 비투비 감지 영역 조정이 가능한 적외선 감지 센서 및 이를 이용한 카운트 장치

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Publication number Priority date Publication date Assignee Title
JPH06174546A (ja) * 1992-12-04 1994-06-24 Hitachi Ltd 人体検出器およびこれを用いた居室環境制御機器
JPH06337154A (ja) * 1993-05-27 1994-12-06 Hitachi Ltd 赤外線源検知器及び該検知器を用いた居住環境制御装置
JPH0875216A (ja) * 1994-08-31 1996-03-19 Sharp Corp 空気調和機の人体検知方法
JP2012505425A (ja) * 2008-10-07 2012-03-01 オヌラ（オフィス ナシオナル デトゥードゥ エ ドゥ ルシェルシェ アエロスパシアル） 真空筐体内に統合された赤外線広視野撮像システム
KR20140042633A (ko) * 2013-03-25 2014-04-07 (주)아이엠 적외선센서모듈

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111862507A (zh) * 2020-07-30 2020-10-30 天津爱仕凯睿科技发展有限公司 热释电pir快速识别人体运动方向的方法及电路结构
CN111862507B (zh) * 2020-07-30 2022-02-08 天津爱仕凯睿科技发展有限公司 热释电pir快速识别人体运动方向的方法

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