WO2019006663A1 - Infrared detector, and infrared detection method - Google Patents
Infrared detector, and infrared detection method Download PDFInfo
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- WO2019006663A1 WO2019006663A1 PCT/CN2017/091707 CN2017091707W WO2019006663A1 WO 2019006663 A1 WO2019006663 A1 WO 2019006663A1 CN 2017091707 W CN2017091707 W CN 2017091707W WO 2019006663 A1 WO2019006663 A1 WO 2019006663A1
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- infrared
- infrared sensor
- lens
- sensor
- infrared detector
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- 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
Definitions
- the present invention relates to the field of detectors, and in particular, to an infrared detector and an infrared detecting method.
- the technical problem to be solved by the present invention is to provide an infrared detector and an infrared detecting method for the defects of the human body which are difficult to detect in the prior art.
- An infrared detector comprising an infrared sensor and a lens disposed on a sensing side of the infrared sensor, wherein the infrared detector further comprises a baffle on the outer side of the sensing side of the lens, the baffle sweeping over and blocking a portion of the lens pixel of the infrared sensor during relative movement of the baffle and the infrared sensor.
- the infrared detector further includes a driving mechanism that drives the shutter to translate or rotate relative to the infrared sensor on a sensing side of the infrared sensor.
- the drive mechanism comprises a stepper motor.
- the flap comprises an elongated blade.
- the flap includes a curved blade, and the curved blade includes an arc segment in a section perpendicular to a plane of the infrared sensor.
- the curved segment spans the lens across the lens, and the curved surface of the curved segment passes over the outer surface of the lens.
- the projection width of the baffle in the plane of the infrared sensor is at least greater than one lens pixel.
- the infrared detector comprises a first infrared sensor and a second infrared sensor disposed on the same plane;
- the blocking piece comprises a curved blade, and the curved blade comprises a cross section perpendicular to a plane Two arc segments that are respectively rotated about the same axis of rotation to successively sweep across the first infrared sensor and the second infrared sensor.
- the present invention also provides an infrared detection method, including:
- the infrared sensor receives infrared rays and generates an infrared detection signal.
- S200 Determine whether the infrared detection signal changes with time, and if yes, determine that there is activity in the infrared detection area, otherwise perform the next step;
- S300 driving the infrared sensor to move relative to the blocking piece, generating an infrared detecting signal in the process that the blocking piece passes over and blocks a part of the lens pixel of the infrared sensor, and determines the infrared based on the infrared detecting signal. Whether there is someone in the detection area.
- step S300 it is determined whether the infrared detection signal generated during the process of sweeping and blocking a part of the lens pixel of the infrared sensor changes with time, and if so, determining that the infrared detection area has A person who is stationary, otherwise it is determined that no one is in the infrared detection area.
- the lens pixel points the detection area into different sensing areas, and a blocking piece that can move relative to the infrared sensor is added outside the lens.
- the same sensing area can receive infrared signals between different turns, whereby the stationary human body moves to the infrared sensor in different turns, thereby realizing effective monitoring of whether the detecting area has a stationary person, false detection Or the rate of missed detection is low; and the infrared detector has a simple structure and does not affect the normal use of the infrared sensor and the lens.
- FIG. 1 is a schematic structural view of an infrared detector according to a first embodiment of the present invention
- Figure 2 is a side view of Figure 1;
- FIG. 3 is a schematic structural view of an infrared detector according to a second embodiment of the present invention
- Figure 4 is a side view of Figure 3;
- FIG. 5 is a schematic structural view of an infrared detector according to a third embodiment of the present invention.
- Figure 6 is a side view of Figure 5;
- FIG. 7 is a flowchart of an infrared detecting method according to a fourth embodiment of the present invention.
- FIG. 2 shows a schematic structural view of an infrared detector 1 according to a first embodiment of the present invention.
- the infrared detector 1 includes an infrared sensor 11 and sensing provided on the infrared sensor 11.
- the side lens 12 and the blocking piece 13 disposed on the outer side of the sensing side of the lens 12, the blocking piece 13 sweeps over and blocks a part of the lens pixel of the infrared sensor 11 during the relative movement of the blocking piece 13 and the infrared sensor 11.
- the lens pixel points the detection area of the infrared sensor 11 into different sensing areas.
- the blocking piece 13 does not pass over and blocks a part of the lens pixel of the infrared sensor 11, the infrared radiation received by the infrared sensor 11 is all from the sensing side. (ie, the detection area) can also be considered as the entire detection range of the lens 12. While the shutter 13 sweeps over and blocks a portion of the lens pixel of the infrared sensor 11, a portion of the sensing area is blocked, and the infrared radiation received by the infrared sensor 11 is partially from the detection area and the other part is from the shutter 13.
- the infrared sensor 11 receives the different sensing areas from the day. Infrared radiation, while the infrared radiation from the flap 13 does not change. If there is a stationary human body in the detection area, the part of the human body that is blocked during the passage of the flap 13 changes with the daytime, and the stationary human body moves between the different turns for the infrared sensor, thereby judging There are people in the detection area who are still.
- the infrared detector 1 can effectively detect whether the detection area has a stationary person, the false detection or the miss detection rate is low, and the structure is simple, and the normal use of the infrared sensor 11 and the lens 12 is not affected.
- the infrared sensor 11 may be a pyroelectric infrared sensor, which acquires infrared radiation and generates an infrared detection signal;
- the lens 12 may be a spherical lens, and the infrared sensor 11 and the lens 12 may be fixedly disposed on the substrate 10,
- the lens 12 covers the entire infrared sensor 11.
- the infrared detector 1 further includes a drive mechanism 14, which may be a stepper motor.
- the driving mechanism 14 can drive the blocking piece 13 to translate or rotate relative to the infrared sensor 11 on the sensing side of the infrared sensor 11, for example, the blocking piece 13 shown in FIGS.
- the driving mechanism 14 can also drive the flap 13 to repeatedly move for a plurality of times, for example, repeatedly shifting, the flap 13 is translated and swept, and then translated back along the original path, and so on; or it can be repeatedly rotated, and the flap 13 is rotated by the needle. After the angle (for example, 180°), rotate the angle counterclockwise, and so on. This repeated sweeping is beneficial to improve the detection accuracy.
- the blocking piece 13 may be a single structure or a combination of various structures; the projection shape of the blocking piece 13 on the plane of the infrared sensor 11 (for example, the substrate 10) is elongated, and the elongated shape is in the passing process.
- the entire lens 12 is spanned.
- the flap 13 includes an elongated blade which is a flat structure. To ensure that the shutter 13 blocks a portion of the lens 12 of the infrared sensor 11 during the sweeping process, it is also possible to obtain infrared radiation that is advantageous for analysis. Over the lens 12, the length of the shutter 13 spans the entire lens 12. Each lens has different pixels above it for reflecting the area of the space to the infrared sensor.
- the lens pixel divides the detection area of the infrared sensor into different sensing areas, and the blocking piece 13 is on the plane of the infrared sensor 11 (for example, the substrate 10).
- the projection width is at least larger than one lens pixel, and the width of the shutter 13 can be set according to the size of the detection area and the detection precision. For example, to obtain higher detection accuracy, the shutter 13 can be disposed on the plane of the infrared sensor 11 (for example)
- the projection width of the substrate 10) is at least greater than one lens pixel and less than two lens pixels.
- FIG. 3 and FIG. 4 there is shown a schematic structural view of an infrared detector 2 according to a second embodiment of the present invention, which is different from the infrared detector 1 of the first embodiment in that
- the sheet 23 includes curved vanes that include an arcuate segment 2 31 in a section perpendicular to the plane of the infrared sensor 21 (e.g., the substrate 20).
- the curved vane is rotatable about the rotating shaft 25 by the driving mechanism 24, and the rotating shaft 25 is connected to one end of the curved section 231 and perpendicular to the substrate 20.
- the curved section 231 traverses the lens 22 across the lens 22, and the outer surface curvature of the lens 22 substantially conforms to the inner surface curvature of the curved section 231 such that the inner curved surface of the curved section 231 is adjacent to the outer surface of the lens 22.
- the curved segments are better placed close to the lens, so that the pixels on each side of the lens are segmented to achieve a wider range of stationary human body detection.
- FIG. 6 shows a structural diagram of an infrared detector 3 according to a third embodiment of the present invention.
- the infrared detector 2 is different from the infrared detector 2 in the second embodiment in that the infrared detector includes a first infrared sensor 311 and a second infrared sensor 312 disposed on the same plane (ie, the same substrate 30); 33 includes a curved vane including two arcuate segments 331 and 332 in a section perpendicular to the plane, the two arcuate segments 331 and 332 rotating about the same rotating shaft 35 by the driving mechanism 34, respectively
- the first infrared sensor 311 and the second infrared sensor 312 are successively swept.
- the use of two infrared detectors can trigger the same as a valid signal, thereby greatly reducing the false alarm rate of the infrared sensor, increasing the detection area and reducing false negatives.
- the infrared detector 3 further includes a first lens 321 and a second lens 322 on the substrate, and the two lenses cover the first infrared sensor 311 and the second infrared sensor 312, respectively.
- the projected shape of the two curved segments 331 and 33 2 fitted on the substrate 30 is still elongated.
- the shaft is located between the first lens 321 and the second lens 322 and is connected to the flap 33 between two adjacent ends of the two curved segments 331 and 332.
- the curved segments 331 and 332 traverse a lens respectively across the cymbal, and the outer surface curvature of the lens substantially conforms to the inner surface curvature of the curved segment such that the curved surface of the curved segment is adjacent to the outer surface of the lens Passing over.
- FIG. 7 illustrates an infrared detecting method according to a fourth embodiment of the present invention.
- the method includes: Step S100: An infrared sensor receives infrared rays and generates an infrared detecting signal; Step S200: Determine an infrared detecting signal Whether it changes with the time, if yes, it is determined that there is activity in the infrared detection area, otherwise the next step S300 is performed; Step S300, driving the infrared sensor and the blocking piece to move relative to each other, generating a part of the lens pixel that sweeps over and blocks the infrared sensor The infrared detection signal in the process of the point, and based on the infrared detection signal, determines whether the infrared detection area is human.
- step S300 it is determined whether the infrared detection signal generated during the process of sweeping and blocking a part of the lens pixel of the infrared sensor changes with the turn, and if so, determining that there is a person in the infrared detection area, Otherwise, no one is determined in the infrared detection area.
- the infrared detecting method herein corresponds to any of the above-mentioned infrared detectors, and any of the above-mentioned infrared detectors can implement the infrared detecting method herein, so that the above-mentioned infrared detecting can be partially or fully cited.
- the description of the device will not repeat the details of the infrared detection method.
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Abstract
An infrared detector (1, 2, 3), and infrared detection method. The infrared detector (1, 2, 3) comprises an infrared sensor (11, 21, 311, 312), a lens (12, 22, 321, 322) arranged on a sensing side of the infrared sensor (11, 21, 311, 312), and a blocking member (13, 23, 33) provided on an outer side of a sensing side of the lens (12, 22, 321, 322). During a relative movement between the blocking member (13, 23, 33) and the infrared sensor (11, 21, 311, 312), the blocking member (13, 23, 33) passes over and blocks a portion of pixel points of the lens (12, 22, 321, 322) of the infrared sensor (11, 21, 311, 312). The infrared detector (1, 2, 3) and infrared detection method divide a detection region into different sensing regions by means of the pixel points of the lens (12, 22, 321, 322), and enable, by means of the blocking member (13, 23, 33) capable of moving relative to the infrared sensor (11, 21, 311, 312) at the outer side of the lens (12, 22, 321, 322), one same sensing region to receive an infrared signal at different times, such that a motionless human body appears to the infrared sensor (11, 21, 311, 312) to be moving over the different times, and as a result the detection region can be effectively monitored so as to detect a motionless person with a low detection error or miss rate. In addition, the infrared detector (1, 2, 3) has a simple structure, and does not interfere with normal operation of the infrared sensor (11, 21, 311, 312) and the lens (12, 22, 321, 322).
Description
红外探测器及红外探测方法 Infrared detector and infrared detection method
技术领域 Technical field
[0001] 本发明涉及探测器领域, 尤其涉及一种红外探测器及红外探测方法。 [0001] The present invention relates to the field of detectors, and in particular, to an infrared detector and an infrared detecting method.
背景技术 Background technique
[0002] 目前, 在红外探测领域, 热释电红外探头无法对处于静止状态的人体进行识别 , 因此, 若在实际探测中采用这种探头, 则容易忽略静止的人体, 造成漏检或 误检。 [0002] At present, in the field of infrared detection, pyroelectric infrared probes cannot identify a human body in a stationary state. Therefore, if such a probe is used in actual detection, it is easy to ignore a stationary human body, resulting in missed detection or false detection. .
技术问题 technical problem
[0003] 本发明要解决的技术问题在于, 针对现有技术中难于探测到静止的人体的缺陷 , 提供一种红外探测器及红外探测方法。 The technical problem to be solved by the present invention is to provide an infrared detector and an infrared detecting method for the defects of the human body which are difficult to detect in the prior art.
问题的解决方案 Problem solution
技术解决方案 Technical solution
[0004] 本发明解决其技术问题所采用的技术方案是: 提供了一种红外探测器, 包括红 外传感器和设于所述红外传感器的感测侧的透镜, 所述红外探测器还包括设于 所述透镜的感测侧外侧的挡片, 在所述挡片与所述红外传感器的相对运动中所 述挡片掠过并遮挡所述红外传感器的一部分透镜像素点。 The technical solution adopted by the present invention to solve the technical problem thereof is as follows: An infrared detector is provided, comprising an infrared sensor and a lens disposed on a sensing side of the infrared sensor, wherein the infrared detector further comprises a baffle on the outer side of the sensing side of the lens, the baffle sweeping over and blocking a portion of the lens pixel of the infrared sensor during relative movement of the baffle and the infrared sensor.
[0005] 优选地, 所述红外探测器还包括驱动机构, 所述驱动机构驱动所述挡片在所述 红外传感器的感测侧相对所述红外传感器平移或旋转。 [0005] Preferably, the infrared detector further includes a driving mechanism that drives the shutter to translate or rotate relative to the infrared sensor on a sensing side of the infrared sensor.
[0006] 优选地, 所述驱动机构包括步进电机。 [0006] Preferably, the drive mechanism comprises a stepper motor.
[0007] 优选地, 所述挡片包括长条形叶片。 [0007] Preferably, the flap comprises an elongated blade.
[0008] 优选地, 所述挡片包括弧形叶片, 所述弧形叶片在垂直于所述红外传感器所在 平面的截面内包括弧形段。 Preferably, the flap includes a curved blade, and the curved blade includes an arc segment in a section perpendicular to a plane of the infrared sensor.
[0009] 优选地, 所述弧形段在所述掠过所述透镜吋跨过透镜, 且所述弧形段的弧面紧 邻所述透镜的外表面掠过。 [0009] Preferably, the curved segment spans the lens across the lens, and the curved surface of the curved segment passes over the outer surface of the lens.
[0010] 优选地, 所述挡片在所述红外传感器所在平面内的投影宽度至少大于一个透镜 像素点。
[0011] 优选地, 所述红外探测器包括设于同一平面上的第一红外传感器和第二红外传 感器; 所述挡片包括弧形叶片, 所述弧形叶片在垂直于平面的截面内包括两个 弧形段, 这两个弧形段分别绕同一转轴旋转以相继掠过所述第一红外传感器和 所述第二红外传感器。 [0010] Preferably, the projection width of the baffle in the plane of the infrared sensor is at least greater than one lens pixel. [0011] Preferably, the infrared detector comprises a first infrared sensor and a second infrared sensor disposed on the same plane; the blocking piece comprises a curved blade, and the curved blade comprises a cross section perpendicular to a plane Two arc segments that are respectively rotated about the same axis of rotation to successively sweep across the first infrared sensor and the second infrared sensor.
[0012] 本发明还提供了一种红外探测方法, 包括: [0012] The present invention also provides an infrared detection method, including:
[0013] S100、 红外传感器接收红外线并生成红外探测信号; [0013] S100. The infrared sensor receives infrared rays and generates an infrared detection signal.
[0014] S200、 判断所述红外探测信号是否随吋间发生变化, 若是, 则确定红外探测区 域内有人活动, 否则执行下一步骤; [0014] S200. Determine whether the infrared detection signal changes with time, and if yes, determine that there is activity in the infrared detection area, otherwise perform the next step;
[0015] S300、 驱动所述红外传感器与挡片相对运动, 生成所述挡片掠过并遮挡所述红 外传感器的一部分透镜像素点的过程中的红外探测信号, 并基于该红外探测信 号判断红外探测区域是否有人。 [0015] S300, driving the infrared sensor to move relative to the blocking piece, generating an infrared detecting signal in the process that the blocking piece passes over and blocks a part of the lens pixel of the infrared sensor, and determines the infrared based on the infrared detecting signal. Whether there is someone in the detection area.
[0016] 优选地, 步骤 S300中, 判断所述挡片掠过并遮挡红外传感器的部分透镜像素点 的过程中生成的红外探测信号是否随吋间发生变化, 若是, 则确定红外探测区 域内有静止的人, 否则确定红外探测区域内无人。 [0016] Preferably, in step S300, it is determined whether the infrared detection signal generated during the process of sweeping and blocking a part of the lens pixel of the infrared sensor changes with time, and if so, determining that the infrared detection area has A person who is stationary, otherwise it is determined that no one is in the infrared detection area.
发明的有益效果 Advantageous effects of the invention
有益效果 Beneficial effect
[0017] 实施本发明具有以下有益效果: 在本发明的红外探测器和红外探测方法中, 透 镜像素点把探测区域分成不同的感应区域, 在透镜外面增加能与红外传感器相 对运动的挡片, 使得相同的感应区域可在不同的吋间接收红外信号, 由此静止 的人体在不同的吋间上对于红外传感器而言是移动的, 从而实现有效监测到探 测区域是否有静止的人, 误检或漏检率低; 且红外探测器结构简单, 不会影响 红外传感器和透镜的正常使用。 [0017] The implementation of the present invention has the following beneficial effects: In the infrared detector and the infrared detecting method of the present invention, the lens pixel points the detection area into different sensing areas, and a blocking piece that can move relative to the infrared sensor is added outside the lens. The same sensing area can receive infrared signals between different turns, whereby the stationary human body moves to the infrared sensor in different turns, thereby realizing effective monitoring of whether the detecting area has a stationary person, false detection Or the rate of missed detection is low; and the infrared detector has a simple structure and does not affect the normal use of the infrared sensor and the lens.
对附图的简要说明 Brief description of the drawing
附图说明 DRAWINGS
[0018] 下面将结合附图及实施例对本发明作进一步说明, 附图中: [0018] The present invention will be further described below in conjunction with the accompanying drawings and embodiments, in which:
[0019] 图 1是本发明第一实施例的红外探测器的结构示意图; 1 is a schematic structural view of an infrared detector according to a first embodiment of the present invention;
[0020] 图 2是图 1的侧视图; Figure 2 is a side view of Figure 1;
[0021] 图 3是本发明第二实施例的红外探测器的结构示意图;
[0022] 图 4是图 3的侧视图; 3 is a schematic structural view of an infrared detector according to a second embodiment of the present invention; Figure 4 is a side view of Figure 3;
[0023] 图 5是本发明第三实施例的红外探测器的结构示意图; 5 is a schematic structural view of an infrared detector according to a third embodiment of the present invention;
[0024] 图 6是图 5的侧视图; Figure 6 is a side view of Figure 5;
[0025] 图 7是本发明第四实施例的红外探测方法的流程图。 7 is a flowchart of an infrared detecting method according to a fourth embodiment of the present invention.
本发明的实施方式 Embodiments of the invention
[0026] 为了使本发明的目的、 技术方案及优点更加清楚明白, 以下结合附图及实施例 , 对本发明进行进一步详细说明。 应当理解, 此处所描述的具体实施例仅仅用 以解释本发明, 并不用于限定本发明。 The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It is understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
[0027] 参见图 1和图 2, 其示出了依据本发明第一实施例的一种红外探测器 1的结构示 意图, 该红外探测器 1包括红外传感器 11、 设于红外传感器 11的感测侧的透镜 12 、 以及设于透镜 12的感测侧外侧的挡片 13, 在挡片 13与红外传感器 11的相对运 动中挡片 13掠过并遮挡红外传感器 11的一部分透镜像素点。 1 and FIG. 2, which shows a schematic structural view of an infrared detector 1 according to a first embodiment of the present invention. The infrared detector 1 includes an infrared sensor 11 and sensing provided on the infrared sensor 11. The side lens 12 and the blocking piece 13 disposed on the outer side of the sensing side of the lens 12, the blocking piece 13 sweeps over and blocks a part of the lens pixel of the infrared sensor 11 during the relative movement of the blocking piece 13 and the infrared sensor 11.
[0028] 透镜像素点把红外传感器 11的探测区域分成不同的感应区域, 在挡片 13未掠过 并遮挡红外传感器 11的一部分透镜像素点吋, 红外传感器 11接收的红外辐射全 部来自感测侧 (即探测区域) , 也可以认为是透镜 12的整个探测范围。 而在挡 片 13掠过并遮挡红外传感器 11的一部分透镜像素点吋, 一部分感应区域被遮挡 , 此吋红外传感器 11接收的红外辐射一部分来自探测区域, 另一部分来自挡片 1 3。 且随着挡片 13的掠过, 挡片 13在探测区域遮挡的位置发生改变, 使得相同的 感应区域在不同的吋间接收红外信号, 由此红外传感器 11随吋间接收来自不同 感应区域的红外辐射, 而来自挡片 13的红外辐射不变。 若探测区域内有静止的 人体, 在挡片 13掠过过程中, 人体被遮挡的部分随吋间变化, 静止的人体在不 同的吋间上对于红外传感器而言是移动的, 由此可判断探测区域内有静止的人 。 采用该红外探测器 1, 可有效监测到探测区域是否有静止的人, 误检或漏检率 低, 且结构简单, 不会影响红外传感器 11和透镜 12的正常使用。 [0028] The lens pixel points the detection area of the infrared sensor 11 into different sensing areas. When the blocking piece 13 does not pass over and blocks a part of the lens pixel of the infrared sensor 11, the infrared radiation received by the infrared sensor 11 is all from the sensing side. (ie, the detection area) can also be considered as the entire detection range of the lens 12. While the shutter 13 sweeps over and blocks a portion of the lens pixel of the infrared sensor 11, a portion of the sensing area is blocked, and the infrared radiation received by the infrared sensor 11 is partially from the detection area and the other part is from the shutter 13. And as the flap 13 passes, the position of the flap 13 blocked in the detection area is changed, so that the same sensing area receives infrared signals between different turns, whereby the infrared sensor 11 receives the different sensing areas from the day. Infrared radiation, while the infrared radiation from the flap 13 does not change. If there is a stationary human body in the detection area, the part of the human body that is blocked during the passage of the flap 13 changes with the daytime, and the stationary human body moves between the different turns for the infrared sensor, thereby judging There are people in the detection area who are still. The infrared detector 1 can effectively detect whether the detection area has a stationary person, the false detection or the miss detection rate is low, and the structure is simple, and the normal use of the infrared sensor 11 and the lens 12 is not affected.
[0029] 具体地, 红外传感器 11可以是热释电红外传感器, 其获取红外辐射并生成红外 探测信号; 透镜 12可以是球面透镜, 红外传感器 11和透镜 12可均固定设于基板 1 0上, 透镜 12覆盖整个红外传感器 11。
[0030] 红外探测器 1还包括驱动机构 14, 该驱动机构 14可以是步进电机。 驱动机构 14 可驱动挡片 13在红外传感器 11的感测侧相对红外传感器 11平移或旋转, 例如, 图 1和图 2示出的挡片 13绕转轴 15按箭头方向旋转以掠过透镜 12及红外传感器 11 , 该转轴 15垂直于红外传感器 11所在平面 (例如基板 10) , 且与透镜 12隔幵一 定距离。 驱动机构 14还可驱动挡片 13多次反复运动, 例如, 反复平移, 挡片 13 平移掠过后, 沿原路平移返回, 以此类推; 也可以是反复旋转, 挡片 13顺吋针 旋转一角度 (例如 180°) 后, 再逆吋针旋转该角度, 以此类推。 该反复掠过有利 于提高探测精度。 [0029] Specifically, the infrared sensor 11 may be a pyroelectric infrared sensor, which acquires infrared radiation and generates an infrared detection signal; the lens 12 may be a spherical lens, and the infrared sensor 11 and the lens 12 may be fixedly disposed on the substrate 10, The lens 12 covers the entire infrared sensor 11. [0030] The infrared detector 1 further includes a drive mechanism 14, which may be a stepper motor. The driving mechanism 14 can drive the blocking piece 13 to translate or rotate relative to the infrared sensor 11 on the sensing side of the infrared sensor 11, for example, the blocking piece 13 shown in FIGS. 1 and 2 rotates in the direction of the arrow about the rotating shaft 15 to sweep the lens 12 and The infrared sensor 11 is perpendicular to the plane of the infrared sensor 11 (for example, the substrate 10) and spaced apart from the lens 12. The driving mechanism 14 can also drive the flap 13 to repeatedly move for a plurality of times, for example, repeatedly shifting, the flap 13 is translated and swept, and then translated back along the original path, and so on; or it can be repeatedly rotated, and the flap 13 is rotated by the needle. After the angle (for example, 180°), rotate the angle counterclockwise, and so on. This repeated sweeping is beneficial to improve the detection accuracy.
[0031] 挡片 13可以是单一结构, 也可以是多种结构的组合; 挡片 13在红外传感器 11所 在平面 (例如基板 10) 的投影形状为长条形, 该长条形在掠过过程中跨过整个 透镜 12。 例如, 参见图 1和图 2, 挡片 13包括长条形叶片, 该叶片为扁平结构。 为确保挡片 13在掠过过程中遮挡红外传感器 11的一部分透镜 12像素点的同吋还 能获取利于分析的红外辐射, 在掠过透镜 12吋, 挡片 13的长度跨过整个透镜 12 。 每个透镜上面有不同的像素点, 用来把空间的区域反射到红外传感器, 透镜 像素点把红外传感器的探测区域分成不同的感应区域, 挡片 13在红外传感器 11 所在平面 (例如基板 10) 的投影宽度至少大于一个透镜像素点, 可根据探测区 域的大小以及探测精度设置挡片 13的宽度, 例如, 若要获得较高的探测精度, 可设置挡片 13在红外传感器 11所在平面 (例如基板 10) 的投影宽度至少大于一 个透镜像素点且小于两个透镜像素点。 [0031] The blocking piece 13 may be a single structure or a combination of various structures; the projection shape of the blocking piece 13 on the plane of the infrared sensor 11 (for example, the substrate 10) is elongated, and the elongated shape is in the passing process. The entire lens 12 is spanned. For example, referring to Figures 1 and 2, the flap 13 includes an elongated blade which is a flat structure. To ensure that the shutter 13 blocks a portion of the lens 12 of the infrared sensor 11 during the sweeping process, it is also possible to obtain infrared radiation that is advantageous for analysis. Over the lens 12, the length of the shutter 13 spans the entire lens 12. Each lens has different pixels above it for reflecting the area of the space to the infrared sensor. The lens pixel divides the detection area of the infrared sensor into different sensing areas, and the blocking piece 13 is on the plane of the infrared sensor 11 (for example, the substrate 10). The projection width is at least larger than one lens pixel, and the width of the shutter 13 can be set according to the size of the detection area and the detection precision. For example, to obtain higher detection accuracy, the shutter 13 can be disposed on the plane of the infrared sensor 11 (for example) The projection width of the substrate 10) is at least greater than one lens pixel and less than two lens pixels.
[0032] 参见图 3和图 4, 其示出了依据本发明第二实施例的一种红外探测器 2的结构示 意图, 与第一实施例中的红外探测器 1的不同之处在于, 挡片 23包括弧形叶片, 弧形叶片在垂直于红外传感器 21所在平面的截面 (例如基板 20) 内包括弧形段 2 31。 弧形叶片在驱动机构 24的作用下可绕转轴 25旋转, 转轴 25与弧形段 231的一 端相连且垂直于基板 20。 同样地, 弧形段 231在掠过吋跨过透镜 22, 透镜 22的外 表面弧度与弧形段 231的内表面弧度基本贴合, 使得弧形段 231的内弧面紧邻透 镜 22的外表面掠过, 因弧形段能更好的贴近透镜, 使透镜的每个面的像素点都 被分割, 达到更大范围的静止人体的探测。 Referring to FIG. 3 and FIG. 4, there is shown a schematic structural view of an infrared detector 2 according to a second embodiment of the present invention, which is different from the infrared detector 1 of the first embodiment in that The sheet 23 includes curved vanes that include an arcuate segment 2 31 in a section perpendicular to the plane of the infrared sensor 21 (e.g., the substrate 20). The curved vane is rotatable about the rotating shaft 25 by the driving mechanism 24, and the rotating shaft 25 is connected to one end of the curved section 231 and perpendicular to the substrate 20. Similarly, the curved section 231 traverses the lens 22 across the lens 22, and the outer surface curvature of the lens 22 substantially conforms to the inner surface curvature of the curved section 231 such that the inner curved surface of the curved section 231 is adjacent to the outer surface of the lens 22. By sweeping, the curved segments are better placed close to the lens, so that the pixels on each side of the lens are segmented to achieve a wider range of stationary human body detection.
[0033] 参见图 5和图 6, 其示出了依据本发明第三实施例的一种红外探测器 3的结构示
意图, 与第二实施例中的红外探测器 2的不同之处在于, 该红外探测器包括设于 同一平面 (即同一基板 30) 上的第一红外传感器 311和第二红外传感器 312; 挡 片 33包括弧形叶片, 弧形叶片在垂直于上述平面的截面内包括两个弧形段 331和 332, 在驱动机构 34的作用下, 这两个弧形段 331和 332分别绕同一转轴 35旋转以 相继掠过第一红外传感器 311和第二红外传感器 312。 使用两个红外探测器可以 同吋触发为有效信号, 从而把红外传感器的误报率大大降低, 同吋增大探测区 域, 减少漏报。 5 and FIG. 6, which shows a structural diagram of an infrared detector 3 according to a third embodiment of the present invention. The infrared detector 2 is different from the infrared detector 2 in the second embodiment in that the infrared detector includes a first infrared sensor 311 and a second infrared sensor 312 disposed on the same plane (ie, the same substrate 30); 33 includes a curved vane including two arcuate segments 331 and 332 in a section perpendicular to the plane, the two arcuate segments 331 and 332 rotating about the same rotating shaft 35 by the driving mechanism 34, respectively The first infrared sensor 311 and the second infrared sensor 312 are successively swept. The use of two infrared detectors can trigger the same as a valid signal, thereby greatly reducing the false alarm rate of the infrared sensor, increasing the detection area and reducing false negatives.
[0034] 具体地, 上述红外探测器 3还包括基板上的第一透镜 321和第二透镜 322, 这两 个透镜分别覆盖第一红外传感器 311和第二红外传感器 312。 两个弧形段 331和 33 2配合在基板 30上的投影形状仍为长条形。 转轴位于第一透镜 321和第二透镜之 间 322, 且在两个弧形段 331和 332的两个相邻端部之间与挡片 33相连。 同样地, 弧形段 331和 332在掠过吋分别跨过一个透镜, 该透镜的外表面弧度与弧形段的 内表面弧度基本贴合, 使得弧形段的弧面紧邻与透镜的外表面掠过。 [0034] Specifically, the infrared detector 3 further includes a first lens 321 and a second lens 322 on the substrate, and the two lenses cover the first infrared sensor 311 and the second infrared sensor 312, respectively. The projected shape of the two curved segments 331 and 33 2 fitted on the substrate 30 is still elongated. The shaft is located between the first lens 321 and the second lens 322 and is connected to the flap 33 between two adjacent ends of the two curved segments 331 and 332. Similarly, the curved segments 331 and 332 traverse a lens respectively across the cymbal, and the outer surface curvature of the lens substantially conforms to the inner surface curvature of the curved segment such that the curved surface of the curved segment is adjacent to the outer surface of the lens Passing over.
[0035] 参见图 7, 图 7示出了依据本发明第四实施例的一种红外探测方法, 该方法包括 : 步骤 S100、 红外传感器接收红外线并生成红外探测信号; 步骤 S200、 判断红 外探测信号是否随吋间发生变化, 若是, 则确定红外探测区域内有人活动, 否 则执行下一步骤 S300; 步骤 S300、 驱动红外传感器与挡片相对运动, 生成挡片 掠过并遮挡红外传感器的一部分透镜像素点的过程中的红外探测信号, 并基于 该红外探测信号判断红外探测区域是否有人。 [0035] Referring to FIG. 7, FIG. 7 illustrates an infrared detecting method according to a fourth embodiment of the present invention. The method includes: Step S100: An infrared sensor receives infrared rays and generates an infrared detecting signal; Step S200: Determine an infrared detecting signal Whether it changes with the time, if yes, it is determined that there is activity in the infrared detection area, otherwise the next step S300 is performed; Step S300, driving the infrared sensor and the blocking piece to move relative to each other, generating a part of the lens pixel that sweeps over and blocks the infrared sensor The infrared detection signal in the process of the point, and based on the infrared detection signal, determines whether the infrared detection area is human.
[0036] 在步骤 S300中, 判断挡片掠过并遮挡红外传感器的部分透镜像素点的过程中生 成的红外探测信号是否随吋间发生变化, 若是, 则确定红外探测区域内有静止 的人, 否则确定红外探测区域内无人。 [0036] In step S300, it is determined whether the infrared detection signal generated during the process of sweeping and blocking a part of the lens pixel of the infrared sensor changes with the turn, and if so, determining that there is a person in the infrared detection area, Otherwise, no one is determined in the infrared detection area.
[0037] 应当知晓, 此处的红外探测方法与上述的任一红外探测器相对应, 上述的任一 红外探测器均可实施此处的红外探测方法, 因此可部分或全部引用上述对红外 探测器的阐述, 不再一一赘述红外探测方法的细节。 [0037] It should be understood that the infrared detecting method herein corresponds to any of the above-mentioned infrared detectors, and any of the above-mentioned infrared detectors can implement the infrared detecting method herein, so that the above-mentioned infrared detecting can be partially or fully cited. The description of the device will not repeat the details of the infrared detection method.
[0038] 可以理解的, 以上实施例仅表达了本发明的优选实施方式, 其描述较为具体和 详细, 但并不能因此而理解为对本发明专利范围的限制; 应当指出的是, 对于 本领域的普通技术人员来说, 在不脱离本发明构思的前提下, 可以对上述技术
特点进行自由组合, 还可以做出若干变形和改进, 这些都属于本发明的保护范 围; 因此, 凡跟本发明权利要求范围所做的等同变换与修饰, 均应属于本发明 权利要求的涵盖范围。
The above embodiments are merely illustrative of the preferred embodiments of the present invention, and the description thereof is more specific and detailed, but is not to be construed as limiting the scope of the invention; A person skilled in the art can apply the above technology without departing from the inventive concept. The features are freely combined, and a number of variations and modifications are possible, which are within the scope of the present invention; therefore, equivalent transformations and modifications made to the scope of the claims of the present invention should fall within the scope of the claims of the present invention. .
Claims
权利要求书 Claim
一种红外探测器, 包括红外传感器和设于所述红外传感器的感测侧的 透镜, 其特征在于, 所述红外探测器还包括设于所述透镜的感测侧外 侧的挡片, 在所述挡片与所述红外传感器的相对运动中所述挡片掠过 并遮挡所述红外传感器的一部分透镜像素点。 An infrared detector includes an infrared sensor and a lens disposed on a sensing side of the infrared sensor, wherein the infrared detector further includes a blocking piece disposed outside the sensing side of the lens, In the relative movement of the shutter and the infrared sensor, the shutter passes over and blocks a portion of the lens pixel of the infrared sensor.
根据权利要求 1的红外探测器, 其特征在于, 所述红外探测器还包括 驱动机构, 所述驱动机构驱动所述挡片在所述红外传感器的感测侧相 对所述红外传感器平移或旋转。 The infrared detector according to claim 1, wherein said infrared detector further comprises a driving mechanism that drives said shutter to translate or rotate relative to said infrared sensor on a sensing side of said infrared sensor.
根据权利要求 2的红外探测器, 其特征在于, 所述驱动机构包括步进 电机。 The infrared detector according to claim 2, wherein said drive mechanism comprises a stepping motor.
根据权利要求 1的红外探测器, 其特征在于, 所述挡片包括长条形叶 片。 The infrared detector according to claim 1, wherein said flap comprises elongated strips.
根据权利要求 1的红外探测器, 其特征在于, 所述挡片包括弧形叶片 , 所述弧形叶片在垂直于所述红外传感器所在平面的截面内包括弧形 The infrared detector according to claim 1, wherein said blocking piece comprises a curved blade, said curved blade comprising an arc in a section perpendicular to a plane of said infrared sensor
[权利要求 6] 根据权利要求 5的红外探测器, 其特征在于, 所述弧形段在所述掠过 所述透镜吋跨过透镜, 且所述弧形段的弧面紧邻所述透镜的外表面掠 过。 [Claim 6] The infrared detector according to claim 5, wherein the curved segment spans the lens across the lens, and the curved surface of the curved segment is adjacent to the lens The outer surface passes.
[权利要求 7] 根据权利要求 1的红外探测器, 其特征在于, 所述挡片在所述红外传 感器所在平面内的投影宽度至少大于一个透镜像素点。 [Claim 7] The infrared detector according to claim 1, wherein a projection width of the shutter in a plane of the infrared sensor is at least larger than one lens pixel.
[权利要求 8] 根据权利要求 1的红外探测器, 其特征在于, 所述红外探测器包括设 于同一平面上的第一红外传感器和第二红外传感器; 所述挡片包括弧 形叶片, 所述弧形叶片在垂直于平面的截面内包括两个弧形段, 这两 个弧形段分别绕同一转轴旋转以相继掠过所述第一红外传感器和所述 第二红外传感器。 [Claim 8] The infrared detector according to claim 1, wherein the infrared detector comprises a first infrared sensor and a second infrared sensor disposed on a same plane; the shutter includes a curved blade, The curved vane includes two arcuate segments in a cross section perpendicular to the plane, the arcuate segments respectively rotating about the same axis of rotation to successively sweep across the first infrared sensor and the second infrared sensor.
[权利要求 9] 一种红外探测方法, 其特征在于, 包括: [Claim 9] An infrared detecting method, comprising:
S100、 红外传感器接收红外线并生成红外探测信号; S100, the infrared sensor receives infrared rays and generates an infrared detection signal;
S200、 判断所述红外探测信号是否随吋间发生变化, 若是, 则确定红
外探测区域内有人活动, 否则执行下一步骤; S200. Determine whether the infrared detection signal changes with time between days, and if yes, determine red. There is activity in the outer detection area, otherwise the next step is performed;
S300、 驱动所述红外传感器与挡片相对运动, 生成所述挡片掠过并遮 挡所述红外传感器的一部分透镜像素点的过程中的红外探测信号, 并 基于该红外探测信号判断红外探测区域是否有人。 S300, driving the infrared sensor to move relative to the blocking piece, generating an infrared detecting signal in the process that the blocking piece passes over and blocks a part of the lens pixel of the infrared sensor, and determines whether the infrared detecting area is based on the infrared detecting signal Someone.
[权利要求 10] 根据权利要求 9的红外探测方法, 其特征在于, 步骤 S300中, 判断所 述挡片掠过并遮挡红外传感器的部分透镜像素点的过程中生成的红外 探测信号是否随吋间发生变化, 若是, 则确定红外探测区域内有静止 的人, 否则确定红外探测区域内无人。
The infrared detecting method according to claim 9, wherein in step S300, it is determined whether the infrared detecting signal generated during the process of sweeping and blocking a part of the lens pixel of the infrared sensor is in accordance with the daytime A change occurs, and if so, it is determined that there is a stationary person in the infrared detection area, otherwise it is determined that there is no one in the infrared detection area.
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