WO2020000186A1 - 热释红外检测系统 - Google Patents

热释红外检测系统 Download PDF

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Publication number
WO2020000186A1
WO2020000186A1 PCT/CN2018/092889 CN2018092889W WO2020000186A1 WO 2020000186 A1 WO2020000186 A1 WO 2020000186A1 CN 2018092889 W CN2018092889 W CN 2018092889W WO 2020000186 A1 WO2020000186 A1 WO 2020000186A1
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WO
WIPO (PCT)
Prior art keywords
pyroelectric infrared
infrared detection
detection system
motor
driving device
Prior art date
Application number
PCT/CN2018/092889
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English (en)
French (fr)
Inventor
韩性峰
Original Assignee
深圳瀚飞科技开发有限公司
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Application filed by 深圳瀚飞科技开发有限公司 filed Critical 深圳瀚飞科技开发有限公司
Priority to CN201880090716.1A priority Critical patent/CN111837018B/zh
Priority to PCT/CN2018/092889 priority patent/WO2020000186A1/zh
Publication of WO2020000186A1 publication Critical patent/WO2020000186A1/zh

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Classifications

    • 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
    • G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
    • G01J5/0066—Radiation pyrometry, e.g. infrared or optical thermometry for hot spots detection
    • 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
    • G01J5/04—Casings
    • G01J5/047—Mobile mounting; Scanning arrangements
    • 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
    • G01J5/08—Optical arrangements
    • G01J5/0806—Focusing or collimating elements, e.g. lenses or concave mirrors

Definitions

  • the present invention relates to a detection system, and more particularly to a pyroelectric infrared detection system with a motor.
  • the existing human pyroelectric infrared detector is composed of: a pyroelectric infrared sensor (PIR) + a Fresnel lens.
  • a Fresnel lens is generally installed in front of the pyroelectric infrared sensor, and the lens is transparent.
  • Made of plastic the upper, lower, left and right parts of the lens are divided into several equal parts to make a lens with a special optical system. It cooperates with an amplifier circuit to amplify the signal by more than 70 decibels, so that it can measure Take action within a range of 10-20 meters.
  • Fresnel lenses are often equivalent to convex lenses of infrared and visible light.
  • an alternating “blind zone” and “high sensitivity zone” are generated in front of the detector to improve its detection and reception. Sensitivity.
  • the infrared light emitted by the human body alternates from the "blind zone” to the "high sensitivity zone", so that the received infrared signal is input in the form of pulses that are suddenly strong and weak, thereby enhancing its energy amplitude. .
  • the Fresnel lens has two functions: one is focusing, that is, refracting (reflecting) the pyroelectric infrared signal on the PI R, and the second function is to divide the detection area into several bright and dark areas,
  • the moving object that enters the detection area can generate a variable pyroelectric infrared signal on the PIR in the form of temperature-change Fresnel lensing.
  • the existing pyroelectric infrared detection systems can only detect mobile "heat sources”, such as moving human bodies, animals, and other high-temperature objects in motion, and cannot detect stationary "heat sources”. For example, the human body, animals, and other stationary high-temperature objects in a stationary state.
  • the present invention provides a pyroelectric infrared detection system, including a pyroelectric infrared detection module, a Fresnel lens, a motor driving device, and a control center; the Fresnel lens is disposed on the In front of the pyroelectric infrared detection module, the control center sends a control command to the motor driving device. After the motor driving device receives the command, it rotates the motor to make the entire pyroelectric infrared detection module swing within a certain range.
  • a level signal is output to the control center for identification and authentication, the motor is a stepping motor, and a fixed angle is used as a step value to rotate step by step. Different stepping motors have different step values.
  • the motor driving device includes two stepping motors that rotate in a vertical direction. If two stepping motors that rotate in the vertical direction are set in the motor driving device, the position and size of the high-temperature object in the two-dimensional space can be detected; and even through multiple scanning and comparison, the plane motion direction of the high-temperature object in the area can be achieved. , Speed and trajectory detection.
  • FIG. 1 is a principle block diagram of the present invention
  • FIG. 2 is a side view of a stepping motor provided with two vertical rotations according to the present invention
  • FIG. 3 is a top view of a stepping motor provided with two vertical rotations according to the present invention.
  • FIG. 4 is a scanning schematic diagram of a scanning area divided into a total of 16 cells of 4 ⁇ 4, and the scanning path of FIG. 4 indicates the operation mode of two sets of stepping motors;
  • FIG. 8 are schematic diagrams of an implementation circuit structure of the present invention.
  • the existing pyroelectric infrared detection module is mounted on the swinging head, and swinging left and right under the drive of the motor driving device; the basic principle is to realize the detected object and heat The relative movement of the infrared detector, even if the detected object is at a stationary state, because the pyroelectric infrared detection module is moving, compared to the pyroelectric infrared detection module, the stationary object becomes moving; it can be realized Detection of stationary human bodies and objects.
  • the motor driving device can also use a stepper motor + positioning detection to achieve left and right deflection swings, which can not only identify the presence or absence of a stationary high-temperature object, but also perform local positioning and size of the object according to the running state of the stepper motor.
  • the measurement of the size realizes the detection of the position and size change of the heat source, which has a wider range of applications and is widely used in fire monitoring, equipment temperature monitoring and other fields.
  • the control center sends a control command to the motor driving device.
  • the motor driving device After the motor driving device receives the command, it rotates the motor to cause the entire pyroelectric infrared detection module to swing left and right within a certain range.
  • the control center When it reaches a high-temperature object, it outputs a level signal to the control center for identification and authentication.
  • the pyroelectric infrared detection module can be driven step by step with a fixed angle as the step value, which is equivalent to dividing the detection range into several regions. It can detect each area, and then detect the position and length of high-temperature objects in this dimension.
  • each area is scanned, and the high-temperature area is marked with a “red flag”, and then the position is determined based on the position of the “red flag” and the length is determined based on the number of “red flags”.

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

Abstract

本发明提供了一种热释红外检测系统，包括热释红外检测模块、菲涅尔透镜、电机驱动装置及控制中心；所述菲涅尔透镜设置在所述热释红外检测模块前方，控制中心发出控制命令给电机驱动装置，电机驱动装置收到命令后，转动马达进而使整个热释红外检测模块在一定范围内摆动，在摆动过程中如检测到高温物体，则输出电平信号给控制中心，进行识别认证，所述马达为步进电机，以固定角度为步进值，一步一步转动。安防监测；人体检测；设备温度变化监测；静止热源监测。设计制造简单、成本低；设计方式灵活，应用范围广泛。

Description

热释红外捡测系统 技术领域
[0001] 本发明涉及检测系统， 尤其涉及带有电机的热释红外检测系统。
背景技术
[0002] 现有的人体热释红外检测器是由： 热释红外传感器 （PIR） +菲涅尔透镜组成的 ， 一般在热释红外传感器的前方装设一个菲涅尔透镜， 该透镜用透明塑料制成 ， 将透镜的上、 下、 左右各部分分割成若干等份， 制成一种具有特殊光学系统 的透镜， 它和放大电路相配合， 可将信号放大 70分贝以上， 这样就可以测出 10~ 20米范围内人的行动。
[0003] 菲涅尔透镜在很多时候相当于红外线及可见光的凸透镜， 利用透镜的特殊光学 原理， 在探测器前方产生一个交替变化的“盲区”和“高灵敏区”， 以提高它的探测 接收灵敏度。 当有人从透镜前走过时， 人体发出的红外线就不断地交替从“盲区” 进入“高灵敏区”， 这样就使接收到的红外信号以忽强忽弱的脉冲形式输入， 从而 增强其能量幅度。
[0004] 菲涅尔透镜作用有两个： 一是聚焦作用， 即将热释红外信号折射 （反射） 在 PI R上， 第二个作用是将探测区域内分为若干个明区和暗区， 使进入探测区域的移 动物体能以温度变菲涅尔透镜化的形式在 PIR上产生变化热释红外信号。
[0005] 基于以上原理可以看出， 现有的热释红外检测系统只能检测移动“热源”， 比如 移动的人体、 动物及其它处于运动中的高温物体， 并不能检测静止的“热源”， 例 如处于静止状态的人体、 动物及其它固定不动的高温物体。
发明概述
技术问题
问题的解决方案
技术解决方案
[0006] 为了解决现有技术中问题， 本发明提供了热释红外检测系统， 包括热释红外检 测模块、 菲涅尔透镜、 电机驱动装置及控制中心； 所述菲涅尔透镜设置在所述 热释红外检测模块前方， 控制中心发出控制命令给电机驱动装置， 电机驱动装 置收到命令后， 转动马达进而使整个热释红外检测模块在一定范围内摆动， 在 摆动过程中如检测到高温物体， 则输出电平信号给控制中心， 进行识别认证， 所述马达为步进电机， 以固定角度为步进值， 一步一步转动。 不同的步进电机 ， 其步进值不同。
[0007] 所述电机驱动装置中包括两组成垂直方向转动的步进电机。 若电机驱动装置中 设置两组成垂直方向转动的步进电机， 则可以实现高温物体在该二维空间的位 置及大小检测； 甚至通过多次扫描对比， 实现对该区域内高温物体的平面运动 方向、 速度及轨迹检测。
发明的有益效果
有益效果
[0008] 本发明的有益效果是：
[0009] 安防监测； 人体检测； 设备温度变化监测； 静止热源监测。
[0010] 设计制造简单、 成本低； 设计方式灵活， 应用范围广泛。
对附图的简要说明
附图说明
[0011] 图 1是本发明原理框图；
[0012] 图 2是本发明设置两组成垂直方向转动的步进电机的侧视图；
[0013] 图 3是本发明设置两组成垂直方向转动的步进电机的俯视图；
[0014] 图 4是将扫描区域划分成 4x4共 16个小区的扫描示意图， 图 4的扫描路径， 指示 出两组步进电机的运行方式；
[0015] 图 5至图 8是本发明一种实施电路结构示意图。
发明实施例
本发明的实施方式
[0016] 下面结合附图对本发明做进一步说明。
[0017] 利用一个可以左右摆动的电机驱动装置， 将现有的热释红外检测模块装配到摆 动头上， 在电机驱动装置的带动下左右摆动； 其基本原理是实现被检测物与热 释红外检测器的相对运动， 即便被检测物处于静止状态， 因为热释红外检测模 块是运动的， 相对于热释红外检测模块来说静止的被检测物也就变成运动的了 ; 可以实现静止人体、 物体的检测应用。
[0018] 电机驱动装置也可以使用步进电机 +定位检测实现左右偏转摆动， 不仅可以实 现静止高温物体的存在与否进行识别， 同时还可以根据步进电机的运行状态对 物体进行局部定位和大小尺寸的测量， 实现热源的位置及大小变化检测， 应用 范围更加广泛， 广泛适用于火灾监测、 设备温度监测等领域。
[0019] 如图 1所示， 控制中心发出控制命令给电机驱动装置， 电机驱动装置收到命令 后， 转动马达进而使整个热释红外检测模块在一定范围内左右摆动， 在摆动过 程中如检测到高温物体， 则输出电平信号给控制中心， 进行识别认证。
[0020] 若电机驱动装置中的驱动马达为步进电机， 热释红外检测模块则可以在其带动 下， 以固定角度为步进值， 一步一步转动， 相当于把检测范围分割成若干区域 ， 可以实现对每个区域的探测， 进而实现高温物体在该维空间的位置及长度检 测。
[0021] 将扫描区域分块量化后， 对每个区域进行扫描， 高温区域进行“插红旗式”标注 ， 而后根据“红旗”所在位置进行位置判断， 根据“红旗”数量进行长度判断。
[0022] 若电机驱动装置中设置两组成垂直方向转动的步进电机， 则可以实现高温物体 在该二维空间的位置及大小检测； 甚至通过多次扫描对比， 实现对该区域内高 温物体的平面运动方向、 速度及轨迹检测。
[0023] 以上内容是结合具体的优选实施方式对本发明所作的进一步详细说明， 不能认 定本发明的具体实施只局限于这些说明。 对于本发明所属技术领域的普通技术 人员来说， 在不脱离本发明构思的前提下， 还可以做出若干简单推演或替换， 都应当视为属于本发明的保护范围。

Claims

权利要求书
[权利要求 1] 一种热释红外检测系统， 其特征在于： 包括热释红外检测模块、 菲涅 尔透镜、 电机驱动装置及控制中心； 所述菲涅尔透镜设置在所述热释 红外检测模块前方， 控制中心发出控制命令给电机驱动装置， 电机驱 动装置收到命令后， 转动马达进而使整个热释红外检测模块在一定范 围内摆动， 在摆动过程中如检测到高温物体， 则输出电平信号给控制 中心， 进行识别认证， 所述马达为步进电机， 以固定角度为步进值， 一步一步转动。
[权利要求 2] 根据权利要求 1所述的热释红外检测系统， 其特征在于： 所述电机驱 动装置中包括两组成垂直方向转动的步进电机。
[权利要求 3] 根据权利要求 1所述的热释红外检测系统， 其特征在于： 所述热释红 外检测系统用于安防监测。
[权利要求 4] 根据权利要求 1所述的热释红外检测系统， 其特征在于： 所述热释红 外检测系统用于人体检测。
[权利要求 5] 根据权利要求 1所述的热释红外检测系统， 其特征在于： 所述热释红 外检测系统用于设备温度变化监测。
[权利要求 6] 根据权利要求 1所述的热释红外检测系统， 其特征在于： 所述热释红 外检测系统用于静止热源监测。
PCT/CN2018/092889 2018-06-26 2018-06-26 热释红外检测系统 WO2020000186A1 (zh)

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Cited By (1)

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JP2014085288A (ja) * 2012-10-26 2014-05-12 Kyocera Document Solutions Inc 電子機器及び画像形成装置
CN102928090A (zh) * 2012-11-09 2013-02-13 南京天溯自动化控制系统有限公司 一种带间隔遮挡装置的人体探测器
CN203164439U (zh) * 2013-03-22 2013-08-28 黄程云 数字式被动红外静止人体探测器
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Publication number Priority date Publication date Assignee Title
WO2023207340A1 (zh) * 2022-04-24 2023-11-02 广州南方学院 一种人体存在传感装置

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